Mobile charging vehicle and mobile energy station

Abstract

The present invention provides a mobile charging vehicle and a mobile energy station, wherein the mobile charging vehicle comprises: a mobile device, and a fuel storage tank, a gas turbine generator set, an electric energy storage device, a charging device and a control system arranged on the mobile device; the fuel storage tank, the gas turbine generator set, the electric energy storage device and the charging device are connected in sequence, and the control system is electrically connected to the gas turbine generator set, the electric energy storage device and the charging device respectively; the gas turbine generator set is provided with an exhaust gas exhaust pipe; the mobile device comprises a driving mechanism, wheels, a chassis, a carriage and a cab. In the present invention, a gas turbine generator set is used as the power source of the mobile charging vehicle. Since the gas turbine has the advantages of full combustion, low emission and high thermal efficiency, the mobile charging vehicle of the present invention has the beneficial effects of low emission and high energy utilization.

Description

Technical Field

[0001] The present invention relates to the technical field of charging equipment, and in particular to a mobile charging vehicle and a mobile energy station. Background Art

[0002] With the promotion of new energy vehicles, the electric vehicle industry has developed rapidly. Among them, pure electric vehicles that rely only on batteries as energy storage power sources are limited in their mileage due to the limited energy storage of batteries.

[0003] In order to promote the popularization of electric vehicles, corresponding charging facilities need to be configured. Traditional charging facilities mainly include large charging stations, community charging piles, public parking lot charging piles and other fixed charging devices. Fixed charging devices cannot be promoted on a large scale due to defects such as long construction period and inflexible distribution, thus restricting the development of electric vehicles.

[0004] In view of the above problems existing in fixed charging devices, the prior art proposes a mobile charging vehicle that uses a piston-type generator set to generate electricity. However, due to the defects of the piston-type generator such as incomplete combustion and insufficient oxidation of exhaust gas, the existing mobile charging vehicle has high emissions. Summary of the invention

[0005] The present invention provides a mobile charging vehicle and a mobile energy station to solve the problem of high emission caused by using a piston-type generator set in the existing mobile charging vehicle.

[0006] In order to solve the above problems, in a first aspect, the present invention provides a mobile charging vehicle, comprising:

[0007] A mobile device, and a fuel storage tank, a gas turbine generator set, an electric energy storage device, a charging device and a control system arranged on the mobile device;

[0008] The fuel storage tank, the gas turbine generator set, the electric energy storage device and the charging device are connected in sequence, and the control system is electrically connected to the gas turbine generator set, the electric energy storage device and the charging device respectively;

[0009] The gas turbine generator set is provided with an exhaust gas discharge pipe;

[0010] The mobile device comprises a driving mechanism, wheels, a chassis, a carriage and a cab.

[0011] In a second aspect, the present invention further provides a mobile energy station, comprising any one of the mobile charging vehicles described above;

[0012] The power transmission line of the gas turbine generator set of the mobile charging vehicle is connected to the power transmission network; or,

[0013] The gas turbine generator set of the mobile charging vehicle provides electric energy by means of isolated grid power generation.

[0014] In the present invention, a gas turbine generator set is used as the power source of the mobile charging vehicle. Since the gas turbine has the advantages of complete combustion, low emissions and high thermal efficiency, the mobile charging vehicle of the present invention has the beneficial effects of low emissions and high energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0016] Figure 1 This is one of the overall structural schematic diagrams of the mobile charging vehicle provided by an embodiment of the present invention;

[0017] Figure 2 This is the second overall structural schematic diagram of the mobile charging vehicle provided by the embodiment of the present invention;

[0018] Figure 3 This is the third overall structural schematic diagram of the mobile charging vehicle provided by an embodiment of the present invention;

[0019] Figure 4 It is a schematic diagram of the overall module of the mobile charging vehicle provided by an embodiment of the present invention;

[0020] Figure 5 It is a structural schematic diagram of a rectifier device of a mobile charging vehicle provided in an embodiment of the present invention;

[0021] Figure 6 It is a structural schematic diagram of a mobile charging vehicle provided by an embodiment of the present invention provided with multiple power generation units;

[0022] Figure 7 It is a schematic diagram of the structure of a thermal management system of a mobile charging vehicle provided by an embodiment of the present invention;

[0023] Figure 8 is a structural schematic diagram of a lithium bromide unit provided in an embodiment of the present invention;

[0024] Fig. 9 is a structural schematic diagram of a mobile energy station provided by an embodiment of the present invention;

[0025] Fig.10 is a structural schematic diagram of another mobile energy station provided by an embodiment of the present invention;

[0026] Figures 11 to 35is a schematic structural diagram of a rotor system provided by an embodiment of the present invention;

[0027] Figure 36 to Figure 39 It is a structural schematic diagram of a foil-type gas-magnetic hybrid thrust bearing provided by an embodiment of the present invention;

[0028] Figures 40 to 46 is a structural schematic diagram of a groove-type gas-magnetic hybrid thrust bearing provided by an embodiment of the present invention;

[0029] Figures 47 to 54 It is a structural schematic diagram of a groove-type gas-magnetic hybrid radial bearing provided in an embodiment of the present invention;

[0030] Figures 55 to 64 It is a schematic diagram of the structure of an integrated bearing provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 3 As shown, an embodiment of the present invention provides a mobile charging vehicle, comprising:

[0033] A mobile device 100, and a fuel storage tank 600, a gas turbine generator set 200, an electric energy storage device 300, a charging device 400 and a control system (not shown in the figure) arranged on the mobile device 100;

[0034] The fuel storage tank 600, the gas turbine generator set 200, the electric energy storage device 300 and the charging device 400 are connected in sequence, and the control system is electrically connected to the gas turbine generator set 200, the electric energy storage device 300 and the charging device 400 respectively;

[0035] The gas turbine generator set 200 is provided with an exhaust gas discharge pipe 210;

[0036] The mobile device 100 includes a driving mechanism (not shown in the figure), wheels, a chassis 120 , a carriage 130 and a cab 110 .

[0037] The mobile charging vehicle of the embodiment of the present invention can charge electrical equipment that needs to be charged, such as electric cars, electric bicycles, and the like.

[0038] In the embodiment of the present invention, a gas turbine generator set 200 is used as the power source of the mobile charging vehicle. Since the gas turbine has the advantages of complete combustion, low emissions and high thermal efficiency, the mobile charging vehicle of the embodiment of the present invention has the beneficial effects of low emissions and high energy utilization.

[0039] In addition, the mobile charging vehicle of the embodiment of the present invention can freely travel on the road because it is provided with the mobile device 100. Therefore, compared with the fixed charging device 400, the mobile charging vehicle of the embodiment of the present invention does not need to rely on the power grid and has flexible deployment. In this way, when electric vehicles and other electrical equipment need to be charged, they do not need to be restricted by the location of the charging device 400, which is conducive to large-scale promotion and use.

[0040] In some embodiments, the mobile device 100 is a pure electric truck, that is, the driving mechanism is a driving motor, the energy storage device 300 is electrically connected to the driving motor, and the energy storage device 300 provides electric energy for the mobile device 100 to drive the mobile device 100 to move.

[0041] Since the mobile charging vehicle is purely electric, it is a new energy vehicle and can reduce exhaust emissions caused by the driving of the mobile charging vehicle.

[0042] In some embodiments, the cab 110 of the mobile device 100 is a single-cabin (ie, has only one driver's seat), and the width of the vehicle compartment 130 is less than or equal to 1 meter. For example, the mobile device 100 is a single-cabin light truck or van.

[0043] The existing road shoulder generally allows two people to pass side by side, and the width of the road shoulder is about two meters. Therefore, through the above configuration, the mobile charging vehicle of the embodiment of the present invention can be driven on the road shoulder, and the width of the mobile charging vehicle at most occupies the width of one person passing, and will not affect the passage of pedestrians. In this way, the problems of the existing charging device 400 being difficult to build, having no land for construction, and occupying parking spaces are solved.

[0044] In some embodiments, the chassis 120 is equipped with hydraulic legs 121, for example, the chassis 120 is equipped with four hydraulic legs 121, and the hydraulic legs 121 are operated by a control system. In this way, the stability of the mobile charging vehicle during charging can be improved.

[0045] In some embodiments, the gas turbine generator set 200 is a micro gas turbine generator set.

[0046] In some embodiments, the fuel storage tank 600, the gas turbine generator set 200 and the charging device 400 are all arranged in the carriage 130, and the carriage 130 is provided with an air inlet (not shown in the figure). For example, a shutter can be set on the carriage 130, and the air inlet is used to provide air intake for the gas turbine generator set 200.

[0047] In some embodiments, the electric energy storage device 300 is disposed on the chassis 120. This is beneficial for lowering the center of gravity of the entire vehicle, thereby improving the stability of the mobile charging vehicle.

[0048] In some embodiments, the energy storage device 300 is a battery, for example, a lithium iron phosphate battery, a ternary lithium battery, or a fuel cell. By setting the energy storage device 300 as a battery, a DC to DC charging method can be implemented, thereby enabling fast, stable, and safe charging.

[0049] In some embodiments, the energy storage device 300 uses waste batteries, such as waste batteries from electric vehicles. In order to ensure sufficient mileage and driving speed, the batteries on electric vehicles generally need to be replaced when the charging capacity is less than about 60%, which produces a large number of waste batteries. Therefore, using these waste batteries as energy storage devices 300 in mobile charging vehicles can not only solve the recycling of existing waste batteries in electric vehicles, but also prevent waste batteries from heating up and improve safety. The energy storage device 300 can be made of multiple waste batteries connected in parallel. In this way, when using a mobile charging vehicle to charge electrical equipment, multiple batteries are discharged at the same time, which is highly efficient.

[0050] In some embodiments, the exhaust pipe 210 extends from the top of the vehicle body 130 and is arranged horizontally toward the rear. In this way, rainwater can be prevented from entering the gas turbine generator set 200 through the exhaust pipe 210.

[0051] In some embodiments, a silencer 211 is disposed at the outlet of the exhaust pipe 210 , and the silencer 211 may be composed of a variable frequency diffuser and a microporous plate.

[0052] In some embodiments, the gas turbine generator set 200 and the charging device 400 are both disposed at the front of the vehicle compartment 130, and the fuel storage tank 600 is disposed at the rear of the vehicle compartment 130, wherein the fuel storage tank 600 stores fuel, for example, natural gas, for providing fuel to the gas turbine generator set 200. In order to ensure sufficient fuel supply, the fuel storage tank 600 may occupy most of the volume of the vehicle compartment 130.

[0053] In this embodiment, the carriage 130 can be divided into a plurality of placement chambers, for example, a first placement chamber 131 for placing the gas turbine generator set 200 , a second placement chamber 132 for placing the charging device 400 , and a third placement chamber for placing the fuel storage tank 600 .

[0054] In the embodiment of the present invention, Figure 4As shown, a rectifier 500 needs to be provided between the gas turbine generator set 200 and the electric energy storage device 300, and the gas turbine generator set 200, the rectifier 500, the electric energy storage device 300 and the charging device 400 are connected in sequence. Figure 5 As shown, the rectifier device 500 may include a filter 510, an AC (Alternating Current) / DC (Direct Current) converter 520, an IGBT (Insulated Gate Bipolar Transistor) module 530 and a transformer 540 connected in sequence, the filter 510 is connected to the gas turbine generator set 200, and the transformer 540 is connected to the energy storage device 300.

[0055] The rectifying device 500 and other required related cables, electrical components, etc. can share the second placement chamber 132 with the charging device 400 .

[0056] In some embodiments, the first placement chamber 131 for placing the gas turbine generator set 200 is provided with a sealing device and a noise reduction device, for example, the noise reduction device is a sound insulation cotton, so that the noise generated when the gas turbine generator set 200 is turned on can be reduced.

[0057] In some embodiments, the gas turbine generator set 200 adopts a modular design, and the gas turbine generator set 200 includes at least two parallel generator set units, each of which includes a micro gas turbine 230, a generator 220 and a rotating shaft, and the micro gas turbine 230 is used to drive the generator 220 to rotate and generate electricity. The micro gas turbine 230 includes a compressor and a turbine, and the generator 220, the compressor and the turbine are sequentially connected through the rotating shaft to form a rotor system of the generator set unit.

[0058] In some embodiments, the power of the micro gas turbine 230 is between 15kw and 200kw, the power generation efficiency of the gas turbine generator set 200 is between 20% and 50%, for example, between 30% and 35%; the temperature before the turbine is 800 to 1600 degrees Celsius.

[0059] In this embodiment, the power generation of each generator unit may be the same or different. For example, the power generation of the generator unit is 15kW, 30kW or 45kW, etc. A variety of output powers can be achieved by using a combination of different generator units, and even when the same vehicle starts generator units of different specifications or different numbers, the output power of its power system may be different. In this way, when the mobile charging vehicle is in different working conditions, one or more of the generator units can be flexibly turned on to adapt to the current working conditions, which is convenient to operate and energy-saving and environmentally friendly.

[0060] In addition, the modular design is conducive to the batch and large-scale production of the micro gas turbine 230 and the generator 220, which is conducive to reducing the cost of production and operation management, and can also meet the needs of mobile charging vehicles with different charging capabilities for power systems of different powers.

[0061] In some embodiments, Figure 6 As shown, each generator unit is respectively connected to a different rectifier 500 , and a plurality of rectifiers 500 are connected in parallel to the electric energy storage device 300 .

[0062] In some embodiments, the charging device 400 includes a charging device 400 body and at least one charging gun 410, at least one charging gun 410 is connected to the charging device 400 body, and the charging device 400 body is provided with a voltage conversion circuit and a power adjustment circuit; the voltage conversion circuit is used to adjust the output voltage of the charging gun 410, and the power adjustment circuit is used to adjust the output current of the charging gun 410.

[0063] The power adjustment circuit and voltage conversion circuit can make the DC power output by the charging gun 410 meet the needs of the electrical equipment. The voltage conversion circuit can be implemented by a voltage converter or a transformer to convert the voltage output by the charging gun 410 into a standard voltage supported by the electrical equipment; then the power adjustment circuit adjusts the current so that the power of the DC power output by the charging gun 410 meets the needs of the electrical equipment.

[0064] In some embodiments, the charging device 400 is provided with a plurality of voltage conversion circuits, a plurality of power adjustment circuits and a plurality of charging guns 410 , so that the charging device 400 can charge a plurality of electrical devices at the same time.

[0065] In some embodiments, the charging device 400 body is also provided with a detection circuit, and the control system is electrically connected to the detection circuit and the power adjustment circuit respectively; when the charging interface of the charging gun 410 is connected to an external electrical device, the detection circuit is used to detect the current capacity of the battery of the electrical device; the control system is used to control the output current of the power adjustment circuit according to the detection result of the detection circuit.

[0066] For example, when the detection circuit detects that the current capacity of the battery of the electrical device reaches 90%, the control system adjusts the power output by the power adjustment circuit to ensure charging at the fastest charging speed while protecting the battery of the electrical device.

[0067] In some embodiments, the charging device 400 further includes a charging operation display device 700, and the control system is electrically connected to the charging operation display device 700; the charging operation display device 700 is used to display a charging user interface and charging information.

[0068] The charging operation display device 700 may be a touch-sensitive display for displaying a charging user interface and charging information. The charging user interface may include a charging start area, a charging stop area, a charging area, etc.; the charging information may include the charged amount, the charging fee, the nominal capacity of the battery of the power-consuming device, the current capacity of the battery of the power-consuming device, etc.

[0069] When the touch-sensitive display displays the charging user interface, if the control system detects that the contact is in the charging start area, the control system starts the charging function of the charging device; if the control system detects that the contact is in the charging stop area, the control system stops the charging function of the charging device; if the control system detects that the contact is in the billing area, the control system generates a QR code corresponding to the charging fee and displays the QR code through the touch-sensitive display. After charging is completed, the user can directly scan the QR code through the payment software to pay the charging fee.

[0070] In some embodiments, the carriage 130 includes a charging device 400 placement room and a door 133 for closing the charging device 400 placement room, the charging device 400 body is arranged in the charging device 400 placement room, the door 133 is provided with a charging gun 410 base for placing the charging gun 410, and the charging operation display device 700 is arranged on the door 133; the side wall of the carriage 130 is provided with a rolling door or window 134 corresponding to the above-mentioned door 133.

[0071] Through the above arrangement, when it is necessary to charge the electric device, the rolling door or window 134 is opened first through the external switch of the carriage 130, so that the charging operation display device 700 and the charging gun 410 are exposed to the outside, which is convenient for charging the electric device. After charging is completed, the rolling door or window 134 can be closed. In this way, the carriage 130 can be sealed to prevent the charging operation display device 700 and the charging gun 410 from being blown by wind, sun or rain.

[0072] In some embodiments, the side wall of the carriage 130 is provided with a rolling door or window 134 corresponding to the gas turbine generator set 200 .

[0073] Through the above arrangement, when the gas turbine generator set 200 needs to be inspected and maintained, the rolling door or window 134 is first opened through the external switch of the carriage 130. After the inspection and maintenance of the gas turbine generator set 200 is completed, the rolling door or window 134 can be closed. In this way, the carriage 130 can be sealed to prevent the gas turbine generator set 200 from being blown by wind, sun or rain.

[0074] In some embodiments, the mobile charging vehicle is also provided with a communication module (not shown in the figure), and the communication module is used to establish a communication connection with an external communication device.

[0075] For example, users can download an app (Application) on power-consuming devices or mobile communication terminals such as mobile phones and tablets, and users can establish a communication connection with the communication module of the mobile charging vehicle through the app. The app can set up an online payment platform to facilitate users to pay fees when charging. In addition, users can also obtain the location information of nearby mobile charging vehicles through the app.

[0076] In some embodiments, the communication module is also used to send a charging password to the power-consuming device (or mobile communication terminal) after receiving a charging request from the power-consuming device (or mobile communication terminal). Correspondingly, the initial state of the touch-sensitive display is a locked state, and the charging password is used to unlock the touch-sensitive display so that the touch-sensitive display enters the charging user interface. In this way, only the power-consuming device with the current charging permission can enter the charging user interface through the password to perform charging operations. After charging is completed, the next user who sends a charging request can charge through the charging password. By using the charging password for charging, on the one hand, order can be maintained during charging, and on the other hand, misoperation can be prevented.

[0077] In some embodiments, the electric energy storage device 300 is also provided with a power detection mechanism, and the control system is electrically connected to the power detection mechanism; wherein, when the power detection mechanism detects that the power of the electric energy storage device 300 is lower than or equal to a first predetermined value, the control system controls the gas turbine generator set 200 to turn on; when the power detection mechanism detects that the power of the electric energy storage device 300 is higher than or equal to a second predetermined value, the control system controls the gas turbine generator set 200 to turn off.

[0078] For example, when the power detection mechanism detects that the power of the energy storage device 300 is lower than or equal to 20% to 40% of the rated power, the control system controls the gas turbine generator set 200 to turn on; when the power detection mechanism detects that the power of the energy storage device 300 is higher than or equal to 90% to 100% of the rated power, the control system controls the gas turbine generator set 200 to turn off.

[0079] In some embodiments, the fuel storage tank 600 is further provided with a liquid level detector and / or a combustible gas concentration detector. In some embodiments, the control system is electrically connected to the liquid level detector and / or the combustible gas concentration detector.

[0080] For example, when the liquid level detector detects that the fuel in the fuel storage tank 600 is 10% to 30% lower than the rated amount, the control system starts the communication module to send fuel shortage information to the fuel supply station (such as a gas station). For example, when the combustible gas concentration detector detects that the combustible gas concentration exceeds the standard, the control system starts the communication module to send relevant information to the maintenance terminal, and the control system controls the gas turbine generator set 200 to shut down.

[0081] In some embodiments, Figure 7 As shown, the mobile charging vehicle also includes:

[0082] A heat exchange medium circulation system 610, the heat exchange medium circulation system 610 includes a circulation pipe filled with a heat exchange medium, and the heat exchange medium circulation system 610 is used to exchange heat for the electrical control element 611 and / or the electric energy storage device 300 in the mobile charging vehicle;

[0083] A heating fan 620, the heating fan 620 is used to heat the cab 110 of the mobile charging vehicle;

[0084] A cooling fan 630, which is used to cool the cab 110 of the mobile charging vehicle;

[0085] A heating system 640, the heating system 640 is connected to the heat exchange medium circulation system 610 and the heating fan 620 respectively;

[0086] And a refrigeration system 650, which is connected to the heat exchange medium circulation system 610 and the refrigeration fan 630 respectively.

[0087] The heat exchange medium circulation system 610 , the heating fan 620 , the cooling fan 630 , the heating system 640 and the cooling system 650 form a thermal management system of the mobile charging vehicle according to the embodiment of the present invention.

[0088] The heat exchange medium circulation system 610 is used to exchange heat with the electrical control element 611 and / or the electric energy storage device 300 in the mobile charging vehicle by using the heating system 640 or the refrigeration system 650, so as to maintain the operating temperature of the electrical control element 611 and / or the electric energy storage device 300 in the mobile charging vehicle within a suitable temperature range. For example, in summer, the temperature of the electrical control element 611 and the electric energy storage device 300 in the mobile charging vehicle is relatively high, and the heat exchange medium circulation system 610 can use the refrigeration system 650 to cool the electrical control element 611 and / or the electric energy storage device 300 in the mobile charging vehicle; in winter, the temperature of the electrical control element 611 and the electric energy storage device 300 in the mobile charging vehicle is relatively low, and the heat exchange medium circulation system 610 can use the heating system 640 to heat the electrical control element 611 and / or the electric energy storage device 300 in the mobile charging vehicle.

[0089] In some embodiments, the heat exchange medium circulation system 610 includes a circulation pipeline, a heat exchange medium, a heat exchange circulation pump, a solenoid valve, a throttle valve, and a temperature sensor, etc. The solenoid valve is used to switch the heat exchange medium on and off, and the throttle valve is used to control the flow of the heat exchange medium, thereby realizing the temperature control of the electrical control element 611 and / or the electric energy storage device 300.

[0090] In some embodiments, a circulation pipeline is arranged around the electrical control element 611, and the circulation pipeline is connected to the heating system 640 and the refrigeration system 650. The circulation pipeline is filled with a heat exchange medium, and a heat exchange circulation pump, a solenoid valve, and a throttle valve are arranged on the circulation pipeline. By starting the heat exchange circulation pump, the heat exchange medium circulates between the refrigeration system 650 and the circulation pipeline around the electrical control element 611, thereby achieving the cooling of the electrical control element 611. Similarly, by starting the heat exchange circulation pump, the heat exchange medium circulates between the heating system 640 and the circulation pipeline around the electrical control element 611, thereby achieving the heating of the electrical control element 611.

[0091] In some embodiments, a circulation pipeline is provided in or around the electric energy storage device 300, and the circulation pipeline is connected to the heating system 640 and the refrigeration system 650. The circulation pipeline is filled with a heat exchange medium, and a heat exchange circulation pump, a solenoid valve, and a throttle valve are provided on the circulation pipeline. By starting the heat exchange circulation pump, the heat exchange medium circulates between the circulation pipelines of the refrigeration system 650 and the electric energy storage device 300, thereby achieving the cooling of the electric energy storage device 300. Similarly, by starting the heat exchange circulation pump, the heat exchange medium circulates between the circulation pipelines of the heating system 640 and the electric energy storage device 300, thereby achieving the heating of the electric energy storage device 300.

[0092] In some embodiments, the heat exchange medium is a liquid-gas phase change material, such as distilled water, ethanol, methanol, carbon tetrachloride, benzene, etc. Phase change materials have the ability to change their physical state within a certain temperature range. Specifically, when the phase change material is heated to the vaporization temperature, a phase change from liquid to gas occurs. During the vaporization process, the phase change material absorbs and stores a large amount of latent heat; when the phase change material is cooled, the stored heat must be dissipated to the environment within a certain temperature range, and a reverse phase change from gas to liquid is performed. In these two phase change processes, the energy stored or released is called the latent heat of phase change. When the physical state changes, the temperature of the material itself remains almost unchanged before the phase change is completed, forming a wide temperature platform. Although the temperature remains unchanged, the latent heat absorbed or released is quite large. Since phase change materials can absorb or release a large amount of heat energy during the phase change process, their heat exchange efficiency is high. Compared with the heat exchange medium circulation system that uses other non-phase change materials as heat exchange media to achieve heat exchange, the flow channel of the heat exchange medium in this heat exchange medium circulation system can be set smaller. This not only reduces the circulation space of the heat exchange medium, but also reduces the amount of heat exchange medium used, thereby reducing the volume and weight of the heat exchange medium circulation system 610 to achieve lightweighting of the entire vehicle.

[0093] In some embodiments, the heat exchange medium is a non-conductive and non-flammable heat exchange medium, such as carbon tetrachloride, lithium bromide solution, etc. In this case, the electric energy storage device 300 can be directly immersed in the heat exchange medium, eliminating the circulation pipeline in or around the battery pack, which can not only improve the heat exchange efficiency and simplify the structure of the battery pack, but also prevent the danger of explosion or fire when the battery pack is short-circuited.

[0094] In some embodiments, the heating system 640 is disposed at the exhaust gas discharge end of the micro gas turbine 230 , and the heating system 640 is used to absorb heat energy in the exhaust gas of the gas turbine generator set 200 for heating.

[0095] In some embodiments, the heating system 640 includes a finned heat exchanger 641 , and the fins of the finned heat exchanger 641 are retractable; the finned heat exchanger 641 is connected to the heat exchange medium circulation system 610 and the heating fan 620 , respectively.

[0096] Through the above arrangement, when heating is required, the fins of the finned heat exchanger 641 are extended to absorb heat energy in the exhaust gas of the gas turbine; when heating is not required, the fins of the finned heat exchanger 641 are retracted.

[0097] In some embodiments, a liquid circuit communicating with the heat exchange medium circulation system 610 and a gas circuit communicating with the heating fan 620 may be provided inside the fin heat exchanger 641 .

[0098] Through the above arrangement, the heating fan 620 can deliver the air heated by the exhaust gas of the micro gas turbine 230 to the cab 110 through the gas loop to achieve heating of the cab 110; the heat exchange medium circulation system 610 can achieve heating of the heat exchange medium by the exhaust gas of the micro gas turbine 230 through the liquid loop. The heating system 640 utilizes the heat energy in the exhaust gas of the micro gas turbine 230 to achieve heating without consuming electric energy, and has the beneficial effect of energy saving and environmental protection.

[0099] In some embodiments, the thermal management system of the mobile charging vehicle is also provided with an automatic control system, which can monitor the temperature of the cab 110, the heat exchange medium, the electrical control element 611 and the electric energy storage device 300 in real time, and control the start and stop of the heating system 640 or the cooling system 650 according to the detected temperature, and control the switch of the corresponding solenoid valve and the opening of the throttle valve to realize automatic control of the temperature of the cab 110, the electrical control element 611 and the electric energy storage device 300.

[0100] In some embodiments, the method for controlling the heating mode of the mobile charging vehicle includes the following steps:

[0101] When the gas turbine generator set 200 is started, one or more generator set units therein can be selectively turned on, and the automatic control system detects the temperature of the electrical control element 611, the electric energy storage device 300 and the cab 110. When it is detected that the temperature of the electrical control element 611, the electric energy storage device 300 or the cab 110 is lower than a predetermined value, the automatic control system controls the heating system 640 to start; when it is detected that the temperature of the electrical control element 611, the electric energy storage device 300 or the cab 110 reaches a predetermined temperature range, the automatic control system controls the heating system 640 to shut down.

[0102] Specifically, when the automatic control system detects that the temperature in the electrical control element 611, the electric energy storage device 300 or the cab 110 is lower than a predetermined value, the automatic control system controls the fins of the finned heat exchanger 641 to extend, absorb the heat energy of the exhaust gas of the micro gas turbine 230, and the high-temperature gas generated by the finned heat exchanger 641 heats the cab 110 through the heating fan 620. At the same time, the automatic control system controls the heat exchange medium circulation system 610 to start, and the heat exchange medium circulates between the finned heat exchanger 641 and the heat exchange medium circulation system 610 to achieve preheating of the electrical control element 611 and the electric energy storage device 300. When the automatic control system detects that the temperature in the electrical control element 611, the electric energy storage device 300 or the cab 110 reaches a predetermined temperature range, the automatic control system controls the fins of the finned heat exchanger 641 to retract, and controls the heat exchange medium circulation system 610 to close.

[0103] In some embodiments, during the control process of the above-mentioned heating mode, if one of the electrical control element 611, the energy storage device 300 and the cab 110 reaches a predetermined temperature and the other components still need to be heated, the automatic control system controls the solenoid valve on the branch that has reached the predetermined temperature to close to cut off the branch of the heat exchange medium, or the automatic control system controls the opening of the throttle valve on the corresponding branch to reduce the flow of the heat exchange medium.

[0104] Through the above control, the heat exchange efficiency of the heating system 640 can be improved.

[0105] In some embodiments, the refrigeration system 650 includes a refrigeration device and a cooler 652, and the refrigeration device includes a refrigerator 653 and a lithium bromide unit 651;

[0106] The refrigerator 653 is electrically connected to the gas turbine generator set 200 and / or the electric energy storage device 300, and the refrigerator 653 is connected to the cooler 652 and / or the cooling fan 630;

[0107] The lithium bromide unit 651 is used to absorb the heat energy in the tail gas of the gas turbine generator set 200 for refrigeration, and the lithium bromide unit 651 is connected to the cooler 652;

[0108] The cooler 652 is connected to a heat exchange medium circulation system and / or a refrigeration fan.

[0109] Specifically, the electric energy output by the generator 220 is supplied to the refrigerator 653 through the high-voltage bus 240 to realize refrigeration, or the electric energy storage device 300 provides electric energy to the refrigerator 653. Specifically, when the refrigerator 653 selects the high-pressure refrigerator 653, the high-voltage bus 240 can provide electric energy to the refrigerator 653; when the refrigerator 653 selects the low-pressure refrigerator 653, the electric energy storage device 300 can provide electric energy to the refrigerator 653.

[0110] The low-temperature gas generated by the refrigerator 653 can enter the cooler 652 to cool the high-temperature heat exchange medium passing through the cooler 652. The high-temperature heat exchange medium is cooled by the cooler 652, and then returns to the heat exchange medium circulation system 610 to circulate to cool the electrical control element 611 and the electric energy storage device 300. The low-temperature gas generated by the refrigerator 653 can also enter the cab 110 through the refrigeration fan 630 to achieve refrigeration in the cab 110.

[0111] In some embodiments, a flow control valve (not shown) may be provided between the refrigerator 653 and the cooling fan 630 to control the flow of the low-temperature gas, thereby controlling the temperature inside the cab 110 and ensuring a suitable temperature inside the cab 110 .

[0112] In addition, when the fuel stored in the fuel storage tank 600 is liquefied gas, the liquefied gas is converted from liquid to gas for combustion in the micro gas turbine 230. During the gasification process of the liquefied gas, a large amount of heat is absorbed from the surrounding environment, thereby forming low-temperature gas around the fuel storage tank 600. The low-temperature gas can be used to cool the cab 110 through the refrigeration fan 630, and can also be used as a cold source of the cooler 652 to cool the heat exchange medium in the heat exchange medium circulation system 610.

[0113] In some embodiments, Figure 8As shown, the lithium bromide unit 651 mainly includes a generator 6511, a condenser 6512, an evaporator 6513, an absorber 6514, a heat exchanger 6515, and a circulating pump 6516. Part of the tail gas of the micro gas turbine 230 is diverted for heating the generator 6511. When the lithium bromide aqueous solution is heated by the tail gas of the micro gas turbine 230 in the generator 6511, the water in the solution is continuously vaporized. As the water is continuously vaporized, the concentration of the lithium bromide aqueous solution in the generator 6511 is continuously increased and enters the absorber 6514. The water vapor enters the condenser 6512, is cooled by the cooling water in the condenser 6512, and condenses to become high-pressure and low-temperature liquid water. When the water in the condenser 6512 enters the evaporator 6513 through a throttle valve (not shown in the figure), it expands rapidly and vaporizes, and absorbs a large amount of heat from the refrigerant water in the evaporator during the vaporization process, thereby achieving the purpose of cooling and refrigeration. In this process, low-temperature water vapor enters absorber 6514, is absorbed by the lithium bromide aqueous solution in absorber 6514, and the solution concentration is gradually reduced, and then sent back to generator 6511 by circulating pump 6516 to complete the whole cycle. This cycle is endless, and cold is continuously produced. Since the lithium bromide dilute solution has been cooled in the absorber and the temperature is relatively low, in order to save the heat of heating the dilute solution and improve the thermal efficiency of the whole device, a heat exchanger 6515 is added to the system, so that the high-temperature concentrated solution flowing out of generator 6511 and the low-temperature dilute solution flowing out of absorber 6514 are heat exchanged to increase the temperature of the dilute solution entering generator 6511. In this way, the purpose of using the tail gas of micro gas turbine 230 to refrigerate through lithium bromide unit 651 is achieved. Specifically, the refrigerant water produced by lithium bromide unit 651 is connected to cooler 652 and circulated, thereby providing the input of cold source for cooler 652. The cooler 652 cools the electrical control element 611, the electric energy storage device 300 and the like through the heat exchange medium circulation system 610. Similarly, the cooler 652 can also be connected to the cooling fan 630 to use the cold source generated by the lithium bromide unit 651 to cool the cab 110.

[0114] When the refrigeration device includes both the refrigerator 653 and the lithium bromide unit 651, these two refrigeration methods can be performed separately or simultaneously to improve the refrigeration efficiency. When the refrigeration demand is not high, the cooling method of the lithium bromide unit 651 is used first, so that the heat energy in the tail gas of the micro gas turbine 230 can be fully utilized, thereby saving the electric energy of the whole vehicle.

[0115] In some embodiments, the cooler 652 can be configured as two separate cooling units, namely, a cooling unit for cooling the heat exchange medium by the refrigerator 653 and a cooling unit for cooling the heat exchange medium by the lithium bromide unit 651. Alternatively, the two cooling units may share one cooler 652, which is provided with a gas cooling pipeline for the low-temperature gas generated by the refrigerator 653 and a liquid cooling pipeline for the refrigerant water generated by the lithium bromide unit 651.

[0116] In some embodiments, a method for controlling a cooling mode of a mobile charging vehicle includes the following steps:

[0117] S1: Start the gas turbine generator set 200, and one or more generator set units therein can be selectively turned on. The automatic control system detects the temperature of the electrical control element 611, the electric energy storage device 300 and the cab 110. When it is detected that the temperature of the electrical control element 611, the electric energy storage device 300 or the cab 110 exceeds a predetermined value, the automatic control system controls the lithium bromide unit 651 to start, and uses the heat energy in the exhaust gas of the micro gas turbine 230 to cool the electrical control element 611 or the electric energy storage device 300, and cools the cab 110 through the cooling fan 630 until the automatic control system detects that the temperature of the electrical control element 611, the electric energy storage device 300 and the cab 110 drops to a normal range.

[0118] S2: When the above-mentioned cooling method cannot meet the cooling requirements or the cooling speed is slow, the cooler 652 uses the low-temperature gas around the fuel storage tank 600 as a cold source to cool the heat exchange medium until the automatic control system detects that the temperature of the electrical control element 611, the energy storage device 300, and the cab 110 drops to a normal range.

[0119] S3: When the above-mentioned refrigeration method still cannot meet the refrigeration requirements or the refrigeration speed is slow, turn on the refrigerator 653, and the low-temperature gas generated by the refrigerator 653 cools the cab 110 through the refrigeration fan 630. At the same time, the low-temperature gas generated by the refrigerator 653 enters the cooler 652 to exchange heat with the heat exchange medium, thereby cooling the electrical control element 611 or the energy storage device 300. When the automatic control system detects that the temperature of the electrical control element 611, the energy storage device 300 or the cab 110 reaches a predetermined value, the automatic control system turns off the refrigerator 653 and only retains the lithium bromide unit 651 for circulating refrigeration.

[0120] S4: During the above cooling process, if one of the electrical control element 611, the energy storage device 300 or the cab 110 reaches a predetermined temperature and the other components still need cooling, the solenoid valve on the branch that has reached the predetermined temperature can be controlled to close to cut off the branch of the heat exchange medium, or the opening of the throttle valve on the corresponding branch can be controlled to reduce the flow rate of the heat exchange medium, thereby improving the heat exchange efficiency.

[0121] The embodiment of the present invention also relates to a mobile energy station using any of the mobile charging vehicles in the above embodiments, wherein the transmission line of the gas turbine generator set 200 of the mobile charging vehicle is connected to the transmission network; or, the gas turbine generator set 200 of the mobile charging vehicle provides electric energy by means of isolated grid power generation. Specifically, the mobile energy station of the embodiment of the present invention includes at least the following two implementation modes.

[0122] As an implementation method, Fig. 9 As shown, the mobile charging vehicle provides electric energy by isolated grid power generation or grid-connected power generation; the mobile energy station also includes a waste heat boiler and a lithium bromide unit, and the exhaust pipe 210 of the mobile charging vehicle is connected to the waste heat boiler and the lithium bromide unit respectively; wherein the waste heat boiler is used to absorb the heat energy in the exhaust gas of the gas turbine generator set 200 of the mobile charging vehicle for heating; the lithium bromide unit is used to absorb the heat energy in the exhaust gas of the gas turbine generator set 200 of the mobile charging vehicle for cooling. Among them, the waste heat boiler branch can be provided with a first control valve, and the first control valve is opened to achieve heating; the lithium bromide unit branch can be provided with a second control valve, and the second control valve is opened to achieve cooling.

[0123] As another embodiment, Fig.10 As shown, the mobile charging vehicle provides electricity through isolated grid power generation or grid-connected power generation; the mobile energy station also includes a flue gas supplementary combustion type lithium bromide unit, and the exhaust pipe 210 of the mobile charging vehicle is connected to the flue gas supplementary combustion type lithium bromide unit; the flue gas supplementary combustion type lithium bromide unit is used to absorb the heat energy in the exhaust gas of the gas turbine generator set 200 of the mobile charging vehicle for heating or cooling.

[0124] Among them, the flue gas supplementary combustion type lithium bromide unit uses the flue gas of the gas generator set as the main heat source, and is also equipped with a supplementary combustion burner. When the flue gas recovery heat cannot meet the cold and hot load requirements, the supplementary combustion burner is automatically started to enable the unit to automatically meet the system's cold and hot load requirements.

[0125] In the embodiment of the present invention, the specific structure of the flue gas supplementary combustion type lithium bromide unit can adopt the existing flue gas supplementary combustion type lithium bromide unit, and the embodiment of the present invention will not be described in detail.

[0126] In the embodiment of the present invention, the mobile energy station can be flexibly moved and does not require infrastructure, and can realize heating, heat supply and power supply for buildings such as office buildings, hotels, hospitals, etc. Generally speaking, a single mobile energy station can provide heating, heat supply and power supply for buildings with an area of ​​more than 3,000 square meters; for buildings with an area of ​​more than 10,000 square meters, a combination of multiple mobile charging vehicles can be used for heating, heat supply and power supply.

[0127] The mobile energy station of the embodiment of the present invention has a comprehensive energy utilization rate of up to 80% to 90% by adopting the gas turbine generator set 200 and recovering waste heat. The current energy utilization rate of power plants is about 50%. It can be seen that the energy utilization rate of the mobile energy station of the embodiment of the present invention is much higher than that of power plants.

[0128] In the embodiment of the present invention, the rotor system of the generator unit may adopt a rotor system with the following structure:

[0129] The shaft body of the rotating shaft is an integrated structure, and the rotating shaft is arranged horizontally;

[0130] The rotating shaft is also provided with a thrust bearing and at least two radial bearings, and the thrust bearing and the at least two radial bearings are non-contact bearings;

[0131] The thrust bearing is arranged at a preset position on a side of the turbine close to the compressor, and the preset position is a position that enables the center of gravity of the rotor system to be located between two radial bearings that are farthest apart from each other among at least two radial bearings.

[0132] In the embodiment of the present invention, the thrust bearing is a bearing used to limit the movement of the rotating shaft in the axial direction, and the radial bearing is a bearing used to limit the movement of the rotating shaft in the radial direction.

[0133] As the rotor speed increases, ordinary contact bearings can no longer meet the needs of high-speed rotors. Therefore, in the embodiment of the present invention, in order to meet the development needs of high-speed rotation of the rotor, the thrust bearing and the radial bearing can adopt non-contact bearings.

[0134] In the embodiment of the present invention, the shaft body of the rotating shaft is an integral structure, which can be understood as the shaft body of the rotating shaft being a whole shaft, or the shaft body of the rotating shaft being rigidly connected by a plurality of shaft segments. Since the shaft body of the rotating shaft is an integral structure, the strength of the shaft body at various locations on the rotating shaft is consistent, which makes the setting position of the thrust bearing on the rotating shaft unrestricted.

[0135] Furthermore, in order to ensure that the entire rotor system can maintain structural stability even when rotating at high speed, the center of gravity of the entire rotor system should be located between the two radial bearings that are farthest apart from each other among the at least two radial bearings mentioned above. In this way, the entire rotor system forms a spindle structure, which is different from the traditional cantilever structure. The embodiment of the present invention improves the stability of the entire rotor system. Since the setting position of the thrust bearing on the rotating shaft is not restricted, in the embodiment of the present invention, the setting position of the thrust bearing can be flexibly adjusted according to parameters such as the number of radial bearings of the at least two radial bearings, the setting position of each radial bearing, and the mass of each component in the entire rotor system (including the mass of the thrust bearing itself), so that the center of gravity of the entire rotor system is located between the two radial bearings that are farthest apart from each other. Preferably, the center of gravity of the entire rotor system is located on the compressor.

[0136] In the embodiment of the present invention, the rotating shaft is arranged horizontally, therefore, it can be understood that the rotor system in the embodiment of the present invention is a horizontal rotor system.

[0137] In order to better understand the overall technical solution of the rotor system of the embodiment of the present invention, the rotor system provided by the embodiment of the present invention is specifically described in detail below with reference to the accompanying drawings.

[0138] like Figures 11 to 13 As shown, the rotor system includes:

[0139] The rotating shaft 100 has an integral structure and is horizontally arranged;

[0140] A motor 200a, a compressor 300a and a turbine 400a are sequentially arranged on the rotating shaft 100;

[0141] In addition, a thrust bearing 500a, a first radial bearing 600a and a second radial bearing 700 are arranged on the rotating shaft 100, the first radial bearing 600a is arranged on the side of the motor 200a away from the compressor 300a, and the second radial bearing 700 is arranged between the compressor 300a and the turbine 400a.

[0142] The thrust bearing 500a is disposed between the first radial bearing 600a and the motor 200a. Fig.11 Alternatively, the thrust bearing 500a is disposed on the side of the first radial bearing 600a away from the motor 200a, as shown Fig.12 Alternatively, the thrust bearing 500a is disposed between the motor 200a and the compressor 300a, as shown Fig.13 shown.

[0143] When the mass of the turbine 400a is relatively large, for example, the material of the turbine 400a is metal, in order to make the center of gravity of the entire rotor system located between the first radial bearing 600a and the second radial bearing 700, it is possible to use Fig.11 or Fig.12 The embodiment shown.

[0144] When the mass of the turbine 400a is relatively small, for example, the material of the turbine 400a is ceramic material or ceramic fiber composite material, in order to make the center of gravity of the entire rotor system located between the first radial bearing 600a and the second radial bearing 700, it is possible to use Fig.13 The embodiment shown.

[0145] It should be noted that for Fig.13 In the embodiment shown, since the thrust bearing 500a is disposed between the motor 200a and the compressor 300a, in order to prevent the thrust plate of the thrust bearing 500a from blocking the air inlet of the compressor 300a, Fig.13 The illustrated embodiment is suitable for a thrust bearing 500a having a smaller thrust plate diameter.

[0146] At present, non-contact bearings generally include electromagnetic bearings and air bearings. However, electromagnetic bearings have problems such as excessive energy consumption and heat generation when they are turned on for a long time; and air bearings will generate shock waves when the surface linear velocity approaches or exceeds the speed of sound, which will cause the bearing to become unstable and even produce catastrophic consequences such as collision with the shaft.

[0147] Therefore, considering the development demand for high speed of gas turbines or gas turbine generator sets, in order to improve the working performance of thrust bearings and radial bearings, in an embodiment of the present invention, the thrust bearing 500a can adopt an air-magnetic hybrid thrust bearing, and the first radial bearing 600a can adopt an air-magnetic hybrid radial bearing or a gas dynamic and static pressure hybrid radial bearing.

[0148] In addition, since the second radial bearing 700 is close to the turbine 400a, considering that the magnetic components in the magnetic bearing cannot withstand the high temperature transmitted from the turbine 400a, the second radial bearing 700 can adopt a gas dynamic and static pressure hybrid radial bearing.

[0149] As another embodiment, the second radial bearing 700 may also be a gas-magnetic hybrid radial bearing, in which case the magnetic component of the second radial bearing 700 is disposed in an area of ​​the second radial bearing 700 that is away from the turbine 400a. In other words, no magnetic component is disposed in an area of ​​the second radial bearing 700 that is close to the turbine 400a.

[0150] To protect the magnetic components on the second radial bearing 700, it can be achieved by reducing the heat energy radiated from the turbine 400a to the second radial bearing 700. Specifically, a heat insulation layer (not shown in the figure) is provided on one side of the turbine 400a close to the second radial bearing 700. Here, the material of the heat insulation layer can be aerogel or other materials with good heat insulation performance.

[0151] Figures 14 to 16 They are shown respectively Figures 11 to 13 Schematic diagram of a magnetic component being arranged in an area of ​​the second radial bearing 700 away from the turbine 400a.

[0152] The compressor 300a may be a centrifugal compressor 300a, and the turbine 400a may be a centrifugal turbine; the motor 200a may be a hydrodynamic bearing motor, and the portion of the rotating shaft 100 corresponding to the bearing of the motor 200a may be provided with a first hydrodynamic pressure generating groove 201.

[0153] like Figures 17 to 20 As shown, the rotor system includes:

[0154] The rotating shaft 100 has an integral structure and is horizontally arranged;

[0155] A motor 200a, a compressor 300a and a turbine 400a are sequentially arranged on the rotating shaft 100;

[0156] In addition, a thrust bearing 500a, a first radial bearing 600a, a second radial bearing 700 and a third radial bearing 800 are arranged on the rotating shaft 100, the first radial bearing 600a is arranged on the side of the motor 200a away from the compressor 300a, the second radial bearing 700 is arranged between the compressor 300a and the turbine 400a, and the third radial bearing 800 is arranged between the motor 200a and the compressor 300a.

[0157] The thrust bearing 500a is disposed between the first radial bearing 600a and the motor 200a. Fig.17 Alternatively, the thrust bearing 500a is disposed on the side of the first radial bearing 600a away from the motor 200a, as shown Fig.18 Alternatively, the thrust bearing 500a is disposed between the motor 200a and the compressor 300a, as shown Fig.19 or Fig. 20 shown.

[0158] Since the third radial bearing 800 is added, when the thrust bearing 500a is arranged between the motor 200a and the compressor 300a, the thrust bearing 500a can be arranged between the motor 200a and the third radial bearing 800. Fig.19As shown; the thrust bearing 500a can be disposed between the third radial bearing 800 and the compressor 300a, as Fig. 20 shown.

[0159] By adding a third radial bearing 800 between the motor 200a and the compressor 300a, the stability of the entire rotor system can be further improved.

[0160] In an embodiment of the present invention, the thrust bearing 500a can adopt an air-magnetic hybrid thrust bearing, and the first radial bearing 600a can adopt an air-magnetic hybrid radial bearing or a gas dynamic and static pressure hybrid radial bearing; since the second radial bearing 700 is close to the turbine 400a, considering that the magnetic components contained in the magnetic bearing cannot withstand the high temperature transmitted from the turbine 400a, the second radial bearing 700 can adopt a gas dynamic and static pressure hybrid radial bearing.

[0161] As another embodiment, the second radial bearing 700 may also be a gas-magnetic hybrid radial bearing, in which case the magnetic component of the second radial bearing 700 is disposed in an area of ​​the second radial bearing 700 that is away from the turbine 400a. In other words, no magnetic component is disposed in an area of ​​the second radial bearing 700 that is close to the turbine 400a.

[0162] To protect the magnetic components on the second radial bearing 700, it can be achieved by reducing the heat energy radiated from the turbine 400a to the second radial bearing 700. Specifically, a heat insulation layer (not shown in the figure) is provided on one side of the turbine 400a close to the second radial bearing 700. Here, the heat insulation layer can be aerogel or other materials.

[0163] Figure 21 to Figure 24 They are shown respectively Figures 17 to 20 Schematic diagram of a magnetic component being arranged in an area of ​​the second radial bearing 700 away from the turbine 400a.

[0164] like Fig.25 As shown, the rotor system includes:

[0165] The rotating shaft 100 has an integral structure and is horizontally arranged;

[0166] A motor 200a, a compressor 300a and a turbine 400a are sequentially arranged on the rotating shaft 100;

[0167] In addition, a thrust bearing 500a, a first radial bearing 600a, a second radial bearing 700 and a fourth radial bearing 900 are arranged on the rotating shaft 100, the first radial bearing 600a is arranged on the side of the motor 200a away from the compressor 300a, the second radial bearing 700 is arranged between the compressor 300a and the turbine 400a, the fourth radial bearing 900 is arranged on the side of the turbine 400a away from the compressor 300a, and the thrust bearing 500a is arranged between the compressor 300a and the second radial bearing 700.

[0168] The embodiment of the present invention can be applicable to the case where the mass of the motor 200a is too large. When the mass of the motor 200a is too large, in order to maintain the stability of the rotor system, radial bearings (i.e., the first radial bearing 600a and the fourth radial bearing 900) need to be provided at both ends of the rotor system, and the thrust bearing 500a needs to be moved toward one side of the turbine 400a.

[0169] Considering the high temperature of the turbine 400a, when the thrust bearing 500a adopts a gas-magnetic hybrid thrust bearing, since the magnetic components in the magnetic bearing cannot withstand the high temperature transmitted from the turbine 400a, the thrust bearing 500a can be arranged between the compressor 300a and the second radial bearing 700. Accordingly, the second radial bearing 700 can adopt a gas dynamic and static pressure hybrid radial bearing.

[0170] Generally, the temperature of the turbine 400a on the side close to the fourth radial bearing 900 is higher than the temperature of the turbine 400a on the side close to the second radial bearing 700. Therefore, the fourth radial bearing 900 preferably adopts a gas dynamic and static pressure mixed radial bearing.

[0171] As another embodiment, the second radial bearing 700 may also be a gas-magnetic hybrid radial bearing, in which case the magnetic component of the second radial bearing 700 is disposed in an area of ​​the second radial bearing 700 that is away from the turbine 400a. In other words, no magnetic component is disposed in an area of ​​the second radial bearing 700 that is close to the turbine 400a.

[0172] To protect the magnetic components on the second radial bearing 700, it can be achieved by reducing the heat energy radiated from the turbine 400a to the second radial bearing 700. Specifically, a heat insulation layer (not shown in the figure) is provided on one side of the turbine 400a close to the second radial bearing 700. Here, the heat insulation layer can be aerogel or other materials.

[0173] Fig.26 Shows Fig.25 Schematic diagram of a magnetic component being arranged in an area of ​​the second radial bearing 700 away from the turbine 400a.

[0174] It should be noted that, when the mass of the motor 200a is not too large, the thrust bearing 500a can be disposed between the first radial bearing 600a and the motor 200a; or, the thrust bearing 500a can be disposed on the side of the first radial bearing 600a away from the motor 200a; or, the thrust bearing 500a can be disposed between the motor 200a and the compressor 300a. Since it is easy to understand, no detailed description is given for this.

[0175] like Fig. 27 As shown, the rotor system includes:

[0176] The rotating shaft 100 has an integral structure and is horizontally arranged;

[0177] A motor 200a, a compressor 300a and a turbine 400a are sequentially arranged on the rotating shaft 100;

[0178] In addition, a thrust bearing 500a, a first radial bearing 600a, a second radial bearing 700, a third radial bearing 800 and a fourth radial bearing 900 are arranged on the rotating shaft 100, the first radial bearing 600a is arranged on the side of the motor 200a away from the compressor 300a, the second radial bearing 700 is arranged between the compressor 300a and the turbine 400a, the third radial bearing 800 is arranged between the motor 200a and the compressor 300a, the fourth radial bearing 900 is arranged on the side of the turbine 400a away from the compressor 300a, and the thrust bearing 500a is arranged between the compressor 300a and the second radial bearing 700.

[0179] Adding a third radial bearing 800 between the motor 200a and the compressor 300a can further improve the stability of the entire rotor system.

[0180] In the embodiment of the present invention, the thrust bearing 500a may be a gas-magnetic hybrid thrust bearing, and the second radial bearing 700 and the fourth radial bearing 900 may be gas dynamic-static hybrid radial bearings.

[0181] As another embodiment, the second radial bearing 700 may also be a gas-magnetic hybrid radial bearing, in which case the magnetic component of the second radial bearing 700 is disposed in an area of ​​the second radial bearing 700 that is away from the turbine 400a. In other words, no magnetic component is disposed in an area of ​​the second radial bearing 700 that is close to the turbine 400a.

[0182] To protect the magnetic components on the second radial bearing 700, it can be achieved by reducing the heat energy radiated from the turbine 400a to the second radial bearing 700. Specifically, a heat insulation layer (not shown in the figure) is provided on one side of the turbine 400a close to the second radial bearing 700. Here, the heat insulation layer can be aerogel or other materials.

[0183] Fig.28 Shows Fig.21 Schematic diagram of a magnetic component being arranged in an area of ​​the second radial bearing 700 away from the turbine 400a.

[0184] Considering that the mobile charging vehicle in the embodiment of the present invention is a mobile device, when the rotor system is not working, the shaft is in direct contact with the bearing. During the driving process of the mobile charging vehicle, the shaft moves radially or axially relative to the bearing due to bumps or vibrations, causing wear between the shaft and the bearing, thereby affecting the accuracy and life of the bearing.

[0185] Therefore, in order to solve the above problems, based on other embodiments of the present invention, the rotor system of the embodiment of the present invention can be provided with a locking device, which is used to lock the shaft when the rotor system is not working. The rotor system of the embodiment of the present invention can also be coated with an anti-wear coating at the part of the shaft 100 where the bearing is installed.

[0186] In the embodiment of the present invention, the structural form and the arrangement mode of the locking device are not unique. For ease of understanding, two implementation modes are described in detail below with reference to the accompanying drawings.

[0187] In one implementation, Fig.29 As shown, the locking device 110 includes a telescopic tightening unit 111, a connecting rod 112 and a fixing component 113, one end of the connecting rod 112 is connected to the fixing component 113, and the other end is connected to the telescopic tightening unit 111, the telescopic tightening unit 111 is opposite to the end surface of the rotating shaft 100 away from the turbine 400a, and the other end of the fixing component 113 is fixedly connected to the shell on which the rotor system of the present application is installed.

[0188] When the rotor system is shut down, the telescopic tightening unit 111 of the locking device 110 is activated and pushes the rotating shaft 100 along the axial direction of the rotating shaft 100, so that the stator of the thrust bearing 500a contacts the thrust plate, thereby axially fixing the rotating shaft 100, and at the same time using the friction between the stator of the thrust bearing 500a and the thrust plate to radially fix the rotating shaft 100.

[0189] Furthermore, the telescopic jacking unit 111 is provided with a top portion (not shown in the figure), and the end surface of the rotating shaft 100 away from the turbine 400a is provided with a top hole (not shown in the figure). In the locked state, the top portion pushes into the top hole of the rotating shaft 100, so that the rotating shaft 100 can be better fixed to prevent the rotating shaft 100 and the bearing from being worn and damaged during the driving of the vehicle.

[0190] In another embodiment, Figure 30 to Figure 31As shown, the locking device 120a can also be set as a locking device of a sleeve structure. Specifically, the locking device 120a includes a telescopic unit 121a and a sleeve 122, and the sleeve 122 is connected to the telescopic end of the telescopic unit 122. The sleeve 122 can be a semicircular sleeve, whose radius is equal to or slightly larger than the radius of the shaft 100, and the axis of the sleeve 122 is arranged parallel to the axis of the shaft 100. The telescopic unit 121a is installed to the approximately axial middle position of the shaft 100 and is fixedly connected to the housing where the rotor system of the present application is installed.

[0191] When the rotor system is shut down, the telescopic unit 121a is extended to allow the sleeve 122 to clamp the shaft 100 and push the shaft 100 to contact the radial bearing, thereby radially fixing the shaft 100 and axially fixing the shaft 100 by utilizing the friction between the radial bearing and the shaft 100.

[0192] Furthermore, the telescopic unit 121a may be a piston cylinder or a hydraulic cylinder or other components that can realize telescopic control.

[0193] In this embodiment, the location of the locking device 120a on the rotating shaft 100 may not be limited. Preferably, the locking device 120a is disposed between the two farthest radial bearings in the rotor system.

[0194] It should be noted that Fig.29 and Fig.30 The locking devices in the Fig.11 The rotor system arrangement shown here does not describe in detail the locking devices arranged in the rotor systems of other embodiments of the present invention.

[0195] In the embodiment of the present invention, by providing a locking device, when the rotor system is not working, the locking device can lock the rotating shaft, so as to prevent the rotating shaft from moving radially or axially relative to the bearing, thereby improving the accuracy and life of the bearing.

[0196] like Fig.32 As shown, the shaft 100 where the bearing is installed is coated with an anti-wear coating 101, which can effectively prevent the shaft 100 and the bearing from wearing. The anti-wear coating 101 is preferably made of a material with chemical stability, corrosion resistance, high lubricity and good anti-aging resistance, such as polytetrafluoroethylene.

[0197] In the embodiment of the present invention, the rotor system of the generator unit may also adopt a vertical rotor system with the following structure:

[0198] The shaft body of the rotating shaft is an integrated structure, and the rotating shaft is arranged vertically;

[0199] The rotating shaft is also provided with a thrust bearing and at least two radial bearings, and the thrust bearing and the at least two radial bearings are non-contact bearings;

[0200] The thrust bearing is arranged at a preset position on a side of the turbine close to the compressor, and the preset position is a position that enables the center of gravity of the rotor system to be located between two radial bearings that are farthest apart from each other among at least two radial bearings.

[0201] Will Figures 11 to 32 The vertical arrangement of the rotating shaft in the horizontal rotor system shown in the figure can form a corresponding vertical rotor system. To avoid repetition, the embodiments of the present invention will not be described in detail. In addition to achieving the same technical effects as the horizontal rotor system, the vertical rotor system can also avoid the problems caused by the cantilever shaft structure caused by the horizontal arrangement of the rotor system because the center of gravity of all components is downward.

[0202] In the embodiment of the present invention, the rotor system of the generator unit may adopt a rotor system with the following structure:

[0203] The shaft body of the rotating shaft is an integrated structure, and the rotating shaft is arranged horizontally or vertically;

[0204] The rotating shaft is also provided with a thrust bearing and two radial bearings, and both the thrust bearing and the two radial bearings are non-contact bearings;

[0205] The rotor system also includes a first casing and a second casing, the first casing being connected to the second casing;

[0206] The generator, the thrust bearing and the two radial bearings are all arranged in the first casing, the compressor and the turbine are both arranged in the second casing, and the impeller of the compressor and the impeller of the turbine are arranged side by side in the second casing.

[0207] In the embodiment of the present invention, the impeller of the compressor and the impeller of the turbine are arranged close to each other, so that the axial length in the first casing is shortened, thereby further improving the stability of the entire rotor system.

[0208] In the embodiment of the present invention, the first casing and the second casing can be positioned and connected by a stopper (not shown in the figure), wherein the thrust bearing and all radial bearings can be all arranged in the first casing (which can be understood as the generator casing), and no bearings are required to be arranged in the second casing (which can be understood as the gas turbine casing). In this way, it is only necessary to ensure the processing accuracy of the part in the first casing for arranging the bearing stator, and the part in the first casing for connecting the bearing stator can be completed by a single clamping process during assembly. It can be seen that the present invention reduces the processing accuracy and assembly accuracy of the gas turbine generator set, reduces the cost, and is suitable for engineering mass production.

[0209] like Figure 33 to Figure 35 As shown, the rotor system includes:

[0210] The rotating shaft 100 has an integral structure and is horizontally arranged;

[0211] The motor 200a, the compressor 300a, the turbine 400a, the thrust bearing 500a, the first radial bearing 600a and the second radial bearing 700 are arranged on the rotating shaft 100, and the thrust bearing 500a, the first radial bearing 600a and the second radial bearing 700 are all non-contact bearings;

[0212] And a first casing 801 and a second casing 901, the first casing 801 is connected to the second casing 901, wherein the motor 200a, the thrust bearing 500a, the first radial bearing 600a and the second radial bearing 700 are all arranged in the first casing 801, the compressor 300a and the turbine 400a are all arranged in the second casing 901; the impeller of the compressor 300a and the impeller of the turbine 400a are arranged side by side in the second casing 901.

[0213] The first radial bearing 600 a is disposed on a side of the motor 200 a away from the second casing 901 , and the second radial bearing 700 is disposed on a side of the motor 200 a close to the second casing 901 .

[0214] The thrust bearing 500a is disposed between the first radial bearing 600a and the motor 200a. Fig.23 Alternatively, the thrust bearing 500a is disposed between the motor 200a and the second radial bearing 700, as shown Fig.24 Alternatively, the thrust bearing 500a is disposed on one side of the second radial bearing 700 close to the second casing 901, as shown Fig.25 shown.

[0215] It should be noted that for Fig.35 In the embodiment shown, since the thrust bearing 500a is arranged on the side of the second radial bearing 700 close to the second casing 901, that is, the thrust bearing 500a is arranged close to the compressor in the second casing 901, in order to avoid the thrust plate of the thrust bearing 500a blocking the air inlet of the compressor 300a, Fig.35 The illustrated embodiment is suitable for a thrust bearing 500a having a smaller thrust plate diameter.

[0216] Optionally, the bearing capacity of the second radial bearing 700 is greater than the bearing capacity of the first radial bearing 600a.

[0217] In the embodiment of the present invention, generally, the weight of the motor 200a and the thrust bearing 500a are both relatively large, and the center of gravity of the entire rotor system will be biased toward the first radial bearing 600a. In view of this, increasing the bearing capacity of the second radial bearing 700 helps to improve the stability of the entire rotor system.

[0218] In the embodiment of the present invention, the compressor 300a may be a centrifugal compressor 300a, and the turbine of the turbine 400a may be a centrifugal turbine; the bearing of the motor 200a may be a fluid dynamic pressure bearing, and the portion of the rotating shaft 100 corresponding to the bearing of the motor 200a may be provided with a first dynamic pressure generating groove 201.

[0219] Will Figure 33 to Figure 35 The rotating shaft in the rotor system shown in the figure is arranged vertically, so as to form a corresponding vertical rotor system. To avoid repetition, this embodiment of the present invention will not be described in detail.

[0220] The working process of the gas turbine generator set is described in detail below.

[0221] As shown above, the thrust bearing in the rotor system can adopt an air-magnetic hybrid thrust bearing, and the radial bearing can adopt an air-magnetic hybrid thrust bearing or a gas-dynamic-static hybrid radial bearing. For the convenience of description, we define the bearing that can play a lubricating role without the rotation of the shaft 100 as a static pressure bearing, and the bearing that can only work when the shaft 100 rotates to a certain speed as a dynamic pressure bearing. According to this logic, the magnetic bearing and gas static pressure bearing in the air-magnetic hybrid thrust bearing, and the gas static pressure bearing in the gas-dynamic-static hybrid radial bearing can all be called static pressure bearings; and the gas dynamic pressure bearing in the air-magnetic hybrid thrust bearing, and the gas dynamic pressure bearing in the gas-dynamic-static hybrid radial bearing can all be called dynamic pressure bearings.

[0222] An embodiment of the present invention provides a control method for a gas turbine generator set, comprising:

[0223] S21. Open the hydrostatic bearing in the radial bearing and the thrust bearing to move the rotating shaft to a preset radial position and move the thrust plate of the thrust bearing to a preset axial position.

[0224] Wherein, opening the static pressure bearing includes: opening a magnetic bearing in the bearing, and / or delivering gas to a static pressure air inlet throttle hole in the bearing.

[0225] S22. Start the gas turbine generator set. The air is compressed by the compressor and then enters the combustion chamber where it is mixed with the fuel in the combustion chamber and burns. The high-temperature and high-pressure gas discharged from the combustion chamber impacts the turbine of the turbine, causing the turbine to rotate. The turbine drives the motor to rotate through the shaft to generate electricity.

[0226] The following describes the starting process of a gas turbine generator set in detail, taking the motor as an example to inspire the integrated motor.

[0227] After receiving the start signal, the gas turbine controller (Electronic Control Unit, ECU) sends a motor drive mode instruction to the motor power controller (Data Processing Center, DPC); the DPC switches to the motor drive mode, and the DPC converts the DC power of the gas turbine's built-in battery into a frequency converter to drive the motor, which drives the gas turbine to increase its speed.

[0228] After the speed of the gas turbine is increased to the ignition speed, the fuel valve is opened to enter the ignition procedure. The air enters the compressor from the intake duct for compression and then enters the regenerator and is preheated by the high-temperature gas discharged from the turbine. The preheated compressed air enters the combustion chamber to mix with the fuel and burn. The high-temperature and high-pressure gas after full combustion in the combustion chamber enters the turbine to impact the turbine, causing the turbine to rotate. The turbine exhaust enters the regenerator to preheat the cold compressed air before entering the combustion chamber and is then discharged from the tail pipe. Since the turbine is connected to the compressor and the motor through a rotating shaft, the rotation of the turbine drives the compressor to rotate together to a self-sustaining speed.

[0229] After the gas turbine reaches the self-sustaining speed, the DPC is suspended, the motor continues to increase the throttle while idling, and the turbine continues to increase the power to increase the speed to the operating speed. The ECU sends a generator mode command to the DPC; the DPC switches to the generator mode and outputs the voltage and current required by the user after the AC output by the motor is rectified and transformed.

[0230] The compressor is a centrifugal compressor, which includes moving blades and circumferentially arranged stationary blades, and the stationary blades are diffusers. In this way, the specific process of air entering the compressor from the air inlet duct for compression can be: after the air enters the moving blades of the centrifugal compressor and is compressed, it enters the diffuser (i.e., the stationary blades) arranged along the circumference and continues to be compressed.

[0231] The turbine is a centrifugal turbine, which is provided with moving blades. The combustion chamber outlet is provided with stationary blades arranged circumferentially, and the stationary blades are nozzles. In this way, the high-temperature and high-pressure gas after full combustion in the combustion chamber enters the turbine to do work, and the specific process of rotating the turbine can be: the high-temperature and high-pressure gas after full combustion in the combustion chamber is expanded and accelerated through the nozzles (i.e. stationary blades) arranged circumferentially at the combustion chamber outlet, and then impacts the moving blades of the turbine, so that the turbine rotates.

[0232] S23. After the rotation speed of the rotating shaft is accelerated to the working speed, the hydrostatic bearings in the radial bearing and the thrust bearing are closed.

[0233] Wherein, closing the static pressure bearing includes: closing the magnetic bearing in the bearing, and / or stopping supplying gas to the static pressure air inlet throttle hole in the bearing.

[0234] S24. When the gas turbine generator set is shut down, open the hydrostatic bearing in the radial bearing and the hydrostatic bearing in the thrust bearing.

[0235] S25. After the rotation speed of the rotating shaft is decelerated to zero, the hydrostatic bearings in the radial bearing and the thrust bearing are closed.

[0236] In the above process, the bearings in the rotor system are controlled so that the hydrostatic bearings in the radial bearings and the thrust bearings are kept open until the rotation speed of the rotating shaft reaches the operating speed.

[0237] When the gas turbine generator set is shut down, the bearings in the rotor system are controlled so that the hydrostatic bearings in the radial bearings and thrust bearings are kept open until the rotation speed of the shaft is zero.

[0238] An embodiment of the present invention provides another control method for a gas turbine generator set, comprising:

[0239] S31. Open the hydrostatic bearing in the radial bearing and the thrust bearing to move the rotating shaft to a preset radial position and move the thrust plate of the thrust bearing to a preset axial position.

[0240] Wherein, opening the static pressure bearing includes: opening a magnetic bearing in the bearing, and / or delivering gas to a static pressure air inlet throttle hole in the bearing.

[0241] S32. Start the gas turbine generator set. The air is compressed by the compressor and then enters the combustion chamber where it is mixed with the fuel and burned. The high-temperature and high-pressure gas discharged from the combustion chamber impacts the turbine of the turbine, causing it to rotate. The turbine drives the motor to rotate through the shaft to generate electricity.

[0242] S33, after the rotation speed of the rotating shaft is accelerated to a first preset value, the hydrostatic bearing in the radial bearing and the thrust bearing is closed.

[0243] The first preset value may be 5% to 30% of the rated speed.

[0244] Wherein, closing the static pressure bearing includes: closing the magnetic bearing in the bearing, and / or stopping supplying gas to the static pressure air inlet throttle hole in the bearing.

[0245] S34. When the rotor system accelerates to the first-order critical speed or the second-order critical speed, the hydrostatic bearings in the radial bearings and the thrust bearings are opened.

[0246] S35. After the rotor system smoothly passes the first-order critical speed or the second-order critical speed, close the hydrostatic bearings in the radial bearing and the thrust bearing.

[0247] S36. During the shutdown of the gas turbine generator set, when the rotor system decelerates to the first-order critical speed or the second-order critical speed, the hydrostatic bearings in the radial bearings and thrust bearings are opened.

[0248] S37. After the rotor system smoothly passes the first-order critical speed or the second-order critical speed, close the hydrostatic bearings in the radial bearings and the thrust bearings.

[0249] S38. When the rotation speed of the rotating shaft is decelerated to a second preset value, the hydrostatic bearing in the radial bearing and the hydrostatic bearing in the thrust bearing are opened.

[0250] The second preset value may be equal to the first preset value or may not be equal to the first preset value, and the second preset value may be 5% to 30% of the rated rotation speed.

[0251] S39. After the rotation speed of the rotating shaft is decelerated to zero, the hydrostatic bearings in the radial bearing and the thrust bearing are closed.

[0252] In the above process, before the gas turbine generator set is started, the bearings in the rotor system are controlled so that the hydrostatic bearings of the radial bearing and the thrust bearing are opened. In this way, the rotating shaft is lifted to a preset radial position under the action of the hydrostatic bearing of the radial bearing; and the thrust plate is pushed to a preset axial position under the action of the hydrostatic bearing of the thrust bearing.

[0253] After the gas turbine generator set is started, the rotation speed of the shaft gradually increases. When the rotation speed of the shaft reaches a first preset value, such as 5% to 30% of the rated speed, the bearings in the rotor system are controlled to stop the hydrostatic bearings in the radial bearings and the thrust bearings. When the rotation speed of the shaft reaches the first-order critical speed or the second-order critical speed, the bearings in the rotor system are controlled to reopen the hydrostatic bearings in the radial bearings and the thrust bearings. After the rotation speed of the shaft passes the first-order critical speed or the second-order critical speed smoothly, the bearings in the rotor system are controlled to stop the hydrostatic bearings in the radial bearings and the thrust bearings again.

[0254] During the shutdown process of the gas turbine generator set, the rotation speed of the rotating shaft gradually decreases. When the rotation speed of the rotating shaft reaches the second-order critical speed or the first-order critical speed, the bearings in the rotor system are controlled to open the hydrostatic bearings of the radial bearing and the thrust bearing again. After the rotation speed of the rotating shaft smoothly passes the second-order critical speed or the first-order critical speed, the bearings in the rotor system are controlled to stop the hydrostatic bearings of the radial bearing and the thrust bearing again. When the rotation speed of the rotating shaft drops to a predetermined value, such as 5% to 30% of the rated speed, the bearings in the rotor system are controlled to open the hydrostatic bearings of the radial bearing and the thrust bearing again until the rotation speed drops to zero, and then the bearings in the rotor system are controlled to stop the hydrostatic bearings of the radial bearing and the thrust bearing again.

[0255] Based on the control method of the gas turbine generator set described above, the control method of the rotor system is specifically described below.

[0256] An embodiment of the present invention provides a control method for a rotor system, comprising:

[0257] S101, opening the hydrostatic bearing in the radial bearing and the thrust bearing to move the rotating shaft to a preset radial position, and moving the thrust plate of the thrust bearing to a preset axial position.

[0258] Wherein, opening the static pressure bearing includes: opening a magnetic bearing in the bearing, and / or delivering gas to a static pressure air inlet throttle hole in the bearing.

[0259] S102, after the rotation speed of the rotating shaft is accelerated to the working speed, the hydrostatic bearing in the radial bearing and the thrust bearing is closed.

[0260] Wherein, closing the static pressure bearing includes: closing the magnetic bearing in the bearing, and / or stopping supplying gas to the static pressure air inlet throttle hole in the bearing.

[0261] S103. When the rotor system is shut down, the hydrostatic bearing in the radial bearing and the hydrostatic bearing in the thrust bearing are opened.

[0262] S104. After the rotation speed of the rotating shaft is decelerated to zero, the hydrostatic bearings in the radial bearing and the thrust bearing are closed.

[0263] In the above process, before the rotor system is started, the bearings in the rotor system are controlled so that the hydrostatic bearings of the radial bearing and the thrust bearing are opened. In this way, the rotating shaft is lifted to a preset radial position under the action of the hydrostatic bearing of the radial bearing; the thrust plate is pushed to a preset axial position under the action of the hydrostatic bearing of the thrust bearing. The hydrostatic bearings in the radial bearing and the thrust bearing are opened until the rotating shaft reaches the operating speed.

[0264] When the rotor system is shut down, the bearings in the rotor system are controlled so that the hydrostatic bearings in the radial bearings and the thrust bearings are kept open until the rotation speed of the shaft is zero.

[0265] An embodiment of the present invention provides another method for controlling a rotor system, comprising:

[0266] S201, opening the hydrostatic bearing in the radial bearing and the thrust bearing to move the rotating shaft to a preset radial position, and moving the thrust plate of the thrust bearing to a preset axial position.

[0267] Wherein, opening the static pressure bearing includes: opening the magnetic bearing in the bearing, and / or supplying gas to the static pressure air inlet throttle hole in the bearing.

[0268] S202, after the rotation speed of the rotating shaft is accelerated to a first preset value, the hydrostatic bearing in the radial bearing and the thrust bearing is closed.

[0269] The first preset value may be 5% to 30% of the rated speed.

[0270] Wherein, closing the static pressure bearing includes: closing the magnetic bearing in the bearing, and / or stopping supplying gas to the static pressure air inlet throttle hole in the bearing.

[0271] S203. When the rotor system accelerates to the first-order critical speed or the second-order critical speed, the hydrostatic bearings in the radial bearing and the thrust bearing are opened.

[0272] S204. After the rotor system smoothly passes through the first-order critical speed or the second-order critical speed, close the hydrostatic bearings in the radial bearing and the thrust bearing.

[0273] S205. When the rotor system decelerates to the first-order critical speed or the second-order critical speed, the hydrostatic bearings in the radial bearing and the thrust bearing are opened.

[0274] S206. After the rotor system smoothly passes through the first-order critical speed or the second-order critical speed, close the hydrostatic bearings in the radial bearing and the thrust bearing.

[0275] S207, when the rotation speed of the rotating shaft is decelerated to a second preset value, the hydrostatic bearing in the radial bearing and the hydrostatic bearing in the thrust bearing are opened.

[0276] The second preset value may be equal to the first preset value or may not be equal to the first preset value, and the second preset value may be 5% to 30% of the rated rotation speed.

[0277] S208. After the rotation speed of the rotating shaft is decelerated to zero, the hydrostatic bearings in the radial bearing and the thrust bearing are closed.

[0278] In the above process, before the rotor system is started, the bearings in the rotor system are controlled so that the hydrostatic bearings of the radial bearing and the thrust bearing are opened. In this way, the rotating shaft is lifted to a preset radial position under the action of the hydrostatic bearing of the radial bearing; and the thrust plate is pushed to a preset axial position under the action of the hydrostatic bearing of the thrust bearing.

[0279] After the rotor system is started, the rotation speed of the shaft gradually increases. When the rotation speed of the shaft reaches a first preset value, such as 5% to 30% of the rated rotation speed, the bearings in the rotor system are controlled to stop the hydrostatic bearings in the radial bearings and the thrust bearings. When the rotation speed of the shaft reaches the first-order critical speed or the second-order critical speed, the bearings in the rotor system are controlled to reopen the hydrostatic bearings in the radial bearings and the thrust bearings. After the rotation speed of the shaft passes the first-order critical speed or the second-order critical speed smoothly, the bearings in the rotor system are controlled to stop the hydrostatic bearings in the radial bearings and the thrust bearings again.

[0280] During the shutdown process of the rotor system, the rotation speed of the rotating shaft gradually decreases. When the rotation speed of the rotating shaft reaches the second-order critical speed or the first-order critical speed, the bearings in the rotor system are controlled to open the hydrostatic bearings of the radial bearing and the thrust bearing again. After the rotation speed of the rotating shaft smoothly passes the second-order critical speed or the first-order critical speed, the bearings in the rotor system are controlled to stop the hydrostatic bearings of the radial bearing and the thrust bearing again. When the rotation speed of the rotating shaft drops to a predetermined value, such as 5% to 30% of the rated speed, the bearings in the rotor system are controlled to open the hydrostatic bearings of the radial bearing and the thrust bearing again until the rotation speed drops to zero, and then the bearings in the rotor system are controlled to stop the hydrostatic bearings of the radial bearing and the thrust bearing again.

[0281] In the embodiment of the present invention, the radial bearing in the rotor system is preferably an air-magnetic hybrid radial bearing, and the thrust bearing in the rotor system is preferably an air-magnetic hybrid thrust bearing.

[0282] Among them, the gas-magnetic hybrid radial bearing can adopt a foil-type gas-magnetic hybrid radial bearing.

[0283] For other specific structures of the foil-type gas-magnetic hybrid radial bearing, please refer to the relevant descriptions in the patent application documents with application numbers CN201810030888.1, CN201810030299.3 or CN201810031822.4, and the same beneficial effects can be achieved. To avoid repetition, the embodiments of the present invention will not be described in detail.

[0284] Among them, the gas-magnetic hybrid thrust bearing can adopt a foil-type gas-magnetic hybrid thrust bearing.

[0285] like Figure 36 to Figure 39 As shown, the foil-type gas-magnetic hybrid thrust bearing 5100 includes:

[0286] A first thrust plate 5101, the first thrust plate 5101 is fixedly connected to the rotating shaft 100;

[0287] and a first stator 5102 and a second stator 5103 penetrating the rotating shaft 100 , wherein the first stator 5102 and the second stator 5103 are respectively disposed on opposite sides of the first thrust plate 5101 ;

[0288] In the first stator 5102 and the second stator 5103, each stator includes a first magnetic bearing 5104 and a first foil bearing 5105, the first magnetic bearing 5104 is provided with a plurality of first magnetic components along the circumferential direction, and the first foil bearing 5105 is provided with a second magnetic component capable of generating magnetic force with the plurality of first magnetic components;

[0289] Among them, the first foil bearing 5105 is arranged between the first magnetic bearing 5104 and the first thrust plate 5101, and has a first gap 5106 between the first foil bearing 5105 and the first thrust plate 5101, and the first foil bearing 5105 can move in the axial direction of the rotating shaft 100 under the action of the magnetic force between the first magnetic component and the second magnetic component.

[0290] In the embodiment of the present invention, by providing the first gap 5106 and the first magnetic bearing 5104 in the thrust bearing 5100, the thrust bearing 5100 forms a gas-magnetic hybrid thrust bearing.

[0291] During operation, the gas bearing in the thrust bearing 5100 and the first magnetic bearing 5104 can work together. When the thrust bearing 5100 is in a stable working state, the support is achieved by relying on the gas bearing; and when the thrust bearing 5100 is in an unstable working state, the thrust bearing 5100 is controlled and responded to in a timely manner by relying on the first magnetic bearing 5104.

[0292] It can be seen that the embodiments of the present invention can improve the dynamic performance and stability of the thrust bearing, especially under high-speed operation, and have strong anti-disturbance ability, thereby improving the load-bearing capacity of the thrust bearing. The thrust bearing of the embodiments of the present invention can meet the needs of high-speed rotor systems, such as gas turbines or gas turbine power generation combined units.

[0293] In the embodiment of the present invention, the outer diameters of the first thrust plate 5101 , the first stator 5102 , and the second stator 5103 may be equal, and the structures of the first stator 5102 and the second stator 5103 may be completely the same.

[0294] When the rotor system of the embodiment of the present invention is applied to a gas turbine or a gas turbine power generation unit, the first stator 5102 and the second stator 5103 can be connected to the casing of the gas turbine through a connecting piece.

[0295] Optionally, the plurality of first magnetic components include a plurality of first permanent magnets, and the plurality of first permanent magnets are arranged circumferentially on the first magnetic bearing 5104;

[0296] Alternatively, the multiple first magnetic components include multiple first electromagnets, which are circumferentially arranged on the first magnetic bearing 5104, and each of the multiple first electromagnets includes a first magnetic core 51041 arranged on the first magnetic bearing 5104 and a first coil 51042 wound around the first magnetic core.

[0297] In an embodiment of the present invention, when the foil-type gas-magnetic hybrid thrust bearing 5100 only requires a magnetic component to provide magnetic force but does not require magnetic control, the first magnetic component is preferably a first permanent magnet; when the foil-type gas-magnetic hybrid thrust bearing 5100 requires both magnetic force and magnetic control, the first magnetic component is preferably a first electromagnet.

[0298] When the first magnetic component is a first electromagnet, the first magnetic core 51041 can generate magnetic force by passing current through the first coil 51042. The magnitude of the magnetic force generated by the first magnetic core 51041 is different depending on the magnitude of the current passed through the first coil 51042; the magnetic poles of the first magnetic core 51041 are also different depending on the direction of the current passed through the first coil 51042.

[0299] Among them, since silicon steel sheets or silicon steel sheets have physical properties such as high magnetic permeability and low eddy current loss, in a preferred embodiment of the present invention, the first magnetic core 51041 is formed by stacking a number of silicon steel sheets or silicon steel sheets.

[0300] Optionally, the first magnetic bearing 5104 includes:

[0301] A first magnetic bearing seat 51043, the first magnetic bearing seat 51043 is arranged opposite to the first thrust plate 5101, a plurality of first accommodating grooves 51044 are arranged on the first magnetic bearing seat 51043 along the circumferential direction, a plurality of first magnetic components are arranged in the plurality of first accommodating grooves 51044, and the magnetic poles of the plurality of first magnetic components face the side where the first foil bearing 5105 is located;

[0302] The first end cover 51045 is arranged on a side of the first magnetic bearing seat 51043 away from the first foil bearing 5105 , and cooperates with the first foil bearing 5105 to fix the first magnetic component on the first magnetic bearing seat 51043 .

[0303] Among them, since silicon steel sheets or silicon steel sheets have physical properties such as high magnetic permeability and low eddy current loss, in a preferred embodiment of the present invention, the first magnetic bearing seat 51043 is formed by stacking a number of silicon steel sheets or silicon steel sheets. The number of the first accommodating grooves 51044 can be but is not limited to six or eight, which are evenly arranged along the circumference of the first magnetic bearing seat 51043. In this way, the magnetic force between the first magnetic bearing seat 51043 and the first foil bearing 5105 can be more uniform and stable. It should be noted that multiple first magnetic components can also be arranged on the first magnetic bearing seat 51043 in other ways, which is not limited to this. The material of the first end cover 51045 can be a non-magnetic material, preferably a hard aluminum material.

[0304] Optionally, the first foil bearing 5105 comprises:

[0305] A first foil bearing seat 51051 fixedly connected to the first magnetic bearing seat 51043;

[0306] and a first foil 51052 and a second foil 51053 disposed on the first foil bearing seat 51051, wherein the first foil 51052 is mounted on the first foil bearing seat 51051, and the second foil 51053 is stacked on a side of the first foil 51052 close to the first thrust plate 5101;

[0307] Among them, the second foil 51053 is a flat foil, and the second magnetic component is arranged on the second foil 51053 so that the second foil 51053 can move in the axial direction of the rotating shaft 100 under the magnetic force of the first magnetic component and the second magnetic component; the first foil 51052 is an elastically deformable foil that can undergo elastic deformation when the second foil 51053 moves.

[0308] The first foil bearing seat 51051 is made of non-magnetic material, preferably hard aluminum. The first foil 51052 is an elastically deformable foil. Considering that the magnetic material is hard and brittle, it is not suitable as an elastically deformable foil. Therefore, the first foil 51052 is preferably a non-magnetic stainless steel strip.

[0309] In the embodiment of the present invention, by setting the second foil 51053 as a flat foil, it is convenient to control the distance between the second foil 51053 and the first thrust plate 5101, or in other words, it is convenient to control the size of the first gap 5106. The first foil 51052 is a foil that can be elastically deformed, which, on the one hand, plays a role in connecting the second foil 51053 and the first foil bearing seat 51051, and on the other hand, can achieve the purpose of the second foil 51053 being able to move relative to the first foil bearing seat 51051 along the axial direction of the rotating shaft 100.

[0310] Optionally, the first foil 51052 is a wavy elastically deformable foil, and the first foil 51052 is an open ring with an opening, one end of the opening is a fixed end, the fixed end is fixed on the first foil bearing seat 51051, and the other end of the opening is a movable end;

[0311] When the second foil 51053 moves in the axial direction of the rotating shaft 100, the wave pattern on the first foil 51052 stretches or contracts, and the movable end moves along the circumferential direction of the ring.

[0312] In the embodiment of the present invention, by configuring the first foil 51052 as a wavy elastically deformable foil, the expansion or contraction characteristics of the wave pattern can be utilized to push the second foil 51053 to move in the axial direction of the rotating shaft 100 .

[0313] It should be noted that the shape of the first foil 51052 in the embodiment of the present invention is not limited to the wavy shape, and other shapes that can produce elastic deformation can be applicable to the first foil 51052 in the embodiment of the present invention.

[0314] Optionally, the second magnetic component includes a first magnetic material disposed on a surface of one side of the second foil 51053 close to the first magnetic bearing 5104;

[0315] The first magnetic material is distributed in strips on the second foil 51053 to form a plurality of strip-shaped magnetic portions, and the plurality of strip-shaped magnetic portions are radial or annular;

[0316] Alternatively, the first magnetic component is distributed in a dotted pattern on the second foil 51053 .

[0317] The material of the second foil 51053 is preferably a non-magnetic material, and the first magnetic material can be covered with a ceramic coating after the first magnetic material is sprayed on the surface of the second foil 51053. The second foil 51053 can be made by sintering ceramic nano-powders of 40% zirconium oxide, 30% α-alumina and 30% magnesium aluminate spinel.

[0318] If the surface of the second foil 51053 is completely covered with the first magnetic material, the magnetic force generated between the first magnetic material and the first magnetic component will be greatly increased, which may easily cause deformation of the second foil 51053. In view of this, in the embodiment of the present invention, by spraying the first magnetic material on the surface of the second foil 51053, so that the first magnetic material is distributed in strips or dots on the second foil 51053, the magnetic force generated between the first magnetic material and the first magnetic component can be controlled within a reasonable range, thereby preventing the second foil 51053 from being deformed due to excessive magnetic force.

[0319] Optionally, the foil-type gas-magnetic hybrid thrust bearing 5100 further includes a first sensor 5107 , and a sensor probe of the first sensor 5107 is disposed in the first gap 5106 .

[0320] In the embodiment of the present invention, by providing the first sensor 5107, parameters at the first gap 5106, such as the air film pressure at the first gap 5106, can be detected in real time. In this way, the first magnetic bearing 5104 can actively control the thrust bearing 5100 according to the detection result of the first sensor 5107, and can achieve high control accuracy.

[0321] Optionally, the first sensor 5107 includes a first sensor cover 51071 and a first sensor probe 51072, the first end of the first sensor probe 51072 is connected to the first sensor cover 51071, the first sensor cover 51071 is fixed on the first magnetic bearing 5104, and the first magnetic bearing 5104 and the first foil bearing 5105 are provided with through holes for the first sensor probe 51072 to pass through; the second end of the first sensor probe 51072 passes through the through holes on the first magnetic bearing 5104 and the first foil bearing 5105 and extends to the first gap 5106, and the second end of the first sensor probe 51072 is flush with the side of the first foil bearing 5105 close to the first thrust disk 5101.

[0322] In the embodiment of the present invention, the first sensor 5107 can be more stably arranged on the first magnetic bearing 5104 through the structural form and installation method of the first sensor 5107. The second end of the first sensor probe 51072 is flush with the side of the first foil bearing 5105 close to the first thrust disk 5101. On the one hand, the first sensor probe 51072 can be prevented from being touched by the first thrust disk 5101, thereby facilitating the protection of the first sensor probe 51072; on the other hand, the air film in the first gap 5106 is not affected, thereby preventing the air film in the first gap 5106 from being disturbed.

[0323] Optionally, the first sensor 5107 is disposed between two adjacent first magnetic components.

[0324] In the embodiment of the present invention, at least one first sensor 5107 should be provided on each stator, preferably one first sensor 5107 , and the first sensor 5107 is preferably provided between two adjacent first magnetic components.

[0325] Optionally, the first sensor 5107 is any one or more of the following combinations:

[0326] A displacement sensor for detecting the position of the first thrust plate 5101;

[0327] A pressure sensor for detecting the air film pressure at the first gap 5106;

[0328] A speed sensor for detecting the rotation speed of the first thrust plate 5101;

[0329] An acceleration sensor is used to detect the rotational acceleration of the first thrust plate 5101.

[0330] The specific control method when the foil-type gas-magnetic hybrid thrust bearing (wherein the first magnetic component in the first magnetic bearing is an electromagnet) according to an embodiment of the present invention participates in the control process of the rotor system is described in detail below.

[0331] An embodiment of the present invention provides a control method for a foil-type gas-magnetic hybrid thrust bearing, comprising:

[0332] S511. Turn on the first magnetic bearings in the first stator and the second stator, and control the first thrust plate to move in the axial direction of the rotating shaft under the magnetic force of the plurality of first magnetic components, so that the difference between the first gap between the first thrust plate and the first foil bearing in the first stator and the first gap between the first thrust plate and the first foil bearing in the second stator is less than or equal to a predetermined value.

[0333] S512, after the rotation speed of the rotating shaft is accelerated to the working speed, the first magnetic bearings in the first stator and the second stator are closed.

[0334] S513: When the rotor system is shut down, start the first magnetic bearings in the first stator and the second stator.

[0335] S514: After the rotation speed of the rotating shaft is decelerated to zero, the first magnetic bearings in the first stator and the second stator are closed.

[0336] In the above process, after the first magnetic bearing is opened, the first thrust plate reaches a predetermined position between the first stator and the second stator under the action of the first magnetic bearing, and the first thrust plate and the end faces of the first stator and the second stator have a first gap.

[0337] As the shaft rotates, the first thrust plate starts to rotate relative to the first stator and the second stator under the condition of being lubricated by the airflow in the first gap to prevent wear. The specific process of opening the first magnetic bearing is: a current signal of a predetermined value is input to the first coil, and the first thrust plate reaches a predetermined position between the first stator and the second stator under the action of the first magnetic bearing.

[0338] As the rotation speed of the rotating shaft increases, the rotation speed of the first thrust plate also increases synchronously. When the rotation speed of the rotating shaft reaches the working speed, the air film pressure generated by the gas hydrodynamic bearing of the thrust bearing (a first gap is set between the first thrust plate and the first stator and the second stator to form the gas hydrodynamic bearing of the thrust bearing) can stabilize the first thrust plate, and the first magnetic bearing can be closed at that time.

[0339] When the rotor system shuts down, the first thrust plate slows down as the shaft slows down. In order to keep the shaft stable during the entire rotor system shutdown process, the first magnetic bearing is opened when the rotor system shuts down, and the first magnetic bearing can be closed after the first thrust plate stops completely.

[0340] The embodiment of the present invention also provides another control method of a foil-type gas-magnetic hybrid thrust bearing, comprising:

[0341] S521. Turn on the first magnetic bearings in the first stator and the second stator, and control the first thrust plate to move in the axial direction of the rotating shaft under the magnetic force of the plurality of first magnetic components, so that the difference between the first gap between the first thrust plate and the first foil bearing in the first stator and the first gap between the first thrust plate and the first foil bearing in the second stator is less than or equal to a predetermined value.

[0342] S522. After the rotation speed of the rotating shaft is accelerated to a first preset value, the first magnetic bearings in the first stator and the second stator are closed.

[0343] S523, when the rotation speed of the rotating shaft is decelerated to a second preset value, the first magnetic bearings in the first stator and the second stator are turned on.

[0344] S524, after the rotation speed of the rotating shaft is decelerated to zero, the first magnetic bearings in the first stator and the second stator are closed.

[0345] In the above process, after the first magnetic bearing is opened, the first thrust plate reaches a predetermined position between the first stator and the second stator under the action of the first magnetic bearing, and the first thrust plate and the end faces of the first stator and the second stator have a first gap.

[0346] As the shaft rotates, the first thrust plate starts to rotate relative to the first stator and the second stator under the condition of being lubricated by the airflow in the first gap to prevent wear. The specific process of opening the first magnetic bearing is: a current signal of a predetermined value is input to the first coil, and the first thrust plate reaches a predetermined position between the first stator and the second stator under the action of the first magnetic bearing.

[0347] As the rotation speed of the rotating shaft increases, the rotation speed of the first thrust plate also increases synchronously. When the rotation speed of the rotating shaft reaches a first preset value, for example, 5% to 30% of the rated speed, the gas hydrodynamic bearing of the thrust bearing (a first gap is set between the first thrust plate and the first stator and the second stator to form the gas hydrodynamic bearing of the foil-type gas-magnetic hybrid thrust bearing) generates an air film pressure that can stabilize the first thrust plate, and the first magnetic bearing can be closed at that time.

[0348] During the shutdown process of the rotor system, the first thrust plate decelerates as the shaft decelerates. When the rotation speed of the shaft is lower than a second preset value, for example, 5% to 30% of the rated rotation speed, the air film pressure generated by the gas hydrodynamic bearing of the thrust bearing also decreases as the first thrust plate decelerates. Therefore, it is necessary to open the first magnetic bearing to keep the first thrust plate stable until the first thrust plate stops completely, and then the first magnetic bearing can be closed.

[0349] Optionally, the above method further includes:

[0350] When the load is applied to the first thrust plate, the first thrust plate moves in the axial direction of the rotating shaft under the action of the load, and the difference between the first gap between the first thrust plate and the first foil bearing in the first stator and the first gap between the first thrust plate and the first foil bearing in the second stator is greater than a predetermined value, opening the first magnetic bearings in the first stator and the second stator;

[0351] When the difference between the first gap between the first thrust plate and the first foil bearing in the first stator and the first gap between the first thrust plate and the first foil bearing in the second stator is less than or equal to a predetermined value, the first magnetic bearings in the first stator and the second stator are closed.

[0352] When the load is applied to the first thrust plate, causing the first gap between the first thrust plate and the first foil bearing of the first stator or the second stator to decrease and approach the first foil bearing on that side, the first sensor (the first sensor here is preferably a pressure sensor) obtains a signal of increased air pressure, and the first magnetic bearing needs to intervene at this time. The first magnetic bearing does not directly apply magnetic force to the first thrust plate to move it toward the first foil bearing on the other side, but uses magnetic force to move the first foil bearing on the other side away from the first thrust plate, so that the first gap between the first thrust plate and the first foil bearing on the other side increases, thereby increasing the pressure on the side where the first gap decreases, adapting to the weight of the load on the first thrust plate, and automatically redistributing the airflow pressure on the two first gaps. When the first thrust plate reaches a new equilibrium position, the first magnetic bearing stops working.

[0353] Specifically, if the first gap between the first thrust plate and the first foil bearing in the first stator is smaller than the first gap between the first thrust plate and the first foil bearing in the second stator, the first foil bearing in the second stator is controlled to move in the axial direction of the rotating shaft away from the first thrust plate under the action of the magnetic force between the multiple first magnetic components and the second magnetic components.

[0354] If the first gap between the first thrust plate and the first foil bearing in the second stator is smaller than the first gap between the first thrust plate and the first foil bearing in the first stator, the first foil bearing in the first stator is controlled to move in the axial direction of the rotating shaft away from the first thrust plate under the action of the magnetic force between the multiple first magnetic components and the second magnetic components.

[0355] Optionally, when the load is applied to the first thrust plate, the first thrust plate moves in the axial direction of the rotating shaft under the action of the load, and the difference between the first gap between the first thrust plate and the first foil bearing in the first stator and the first gap between the first thrust plate and the first foil bearing in the second stator is greater than a predetermined value, opening the first magnetic bearings in the first stator and the second stator includes:

[0356] When the load is applied to the first thrust plate, the first thrust plate moves in the axial direction of the rotating shaft under the action of the load, and the difference between the first gap between the first thrust plate and the first foil bearing in the first stator and the first gap between the first thrust plate and the first foil bearing in the second stator is greater than a predetermined value, the first magnetic bearings in the first stator and the second stator are controlled to open at maximum power; or,

[0357] When the load is applied to the first thrust plate, the first thrust plate moves in the axial direction of the rotating shaft under the action of the load, and the difference between the first gap between the first thrust plate and the first foil bearing in the first stator and the first gap between the first thrust plate and the first foil bearing in the second stator is greater than a predetermined value, the first magnetic bearings in the first stator and the second stator are controlled to open in a strobe manner at a preset frequency.

[0358] When an external impact disturbance occurs, the first thrust disk may quickly approach the first foil bearing on one side, which may cause the first gap on that side to be too small instantly, so that the local gas flow rate at the first gap on that side approaches or even reaches the speed of sound, thereby inducing shock waves to produce air hammer self-excitation phenomenon. The generation of shock waves will cause disturbances and chaos in the local gas flow, and when the fluid velocity changes between the speed of sound and the subsonic speed, its pressure drops significantly in a step-like manner. In this case, the first foil bearing on that side needs to actively "avoid" the first thrust disk, so that the first gap on that side is increased so that the gas flow velocity is maintained in the subsonic range as much as possible to maintain its normal fluid pressure. Specifically, it is necessary to simultaneously control the first magnetic bearings on the first stator and the second stator so that the magnetic poles of the first magnetic bearings are excited with the same polarity, that is, the side where the first gap is reduced generates suction to suck back the first foil bearing on that side, and the side where the first gap is increased generates suction to pull back the first thrust disk. In this way, the difference in magnetic action distances on both sides is used to generate a magnetic difference, thereby pulling the first thrust plate to restore the first gap between the first thrust plate and the first foil bearings on both sides to normal, thereby returning the first thrust plate to a balanced state.

[0359] In the above process, the advantage of the first magnetic bearing for convenient real-time control is utilized to actively balance the unbalanced mass of the first thrust disk or the vortex of the first thrust disk and other factors that cause the first thrust disk to over-exert, so that the first thrust disk is fixed in a very small range in the axial direction of the rotating shaft. In addition, during the acceleration process of the first thrust disk, the position where the shock wave is generated (i.e., the supersonic part of the linear velocity) can be accurately located, and by controlling the current size and direction of the first magnetic bearing, etc., the first magnetic bearing can generate an opposite force to balance the shock wave. After the shock wave is stable, the control strategy of the first magnetic bearing is adjusted again to fix the first thrust disk in a very small range in the most energy-saving way.

[0360] In summary, the embodiments of the present invention have the following beneficial effects:

[0361] First, the electromagnetic bearing and the gas bearing work together to improve the dynamic performance and stability of the bearing under high-speed operation, and have strong resistance to disturbance, thereby improving the bearing's load-bearing capacity. At the same time, the electromagnetic bearing and the gas bearing adopt a parallel structure, which simplifies the structure, has a high degree of integration, is easy to process, manufacture and operate, and improves the comprehensive performance of the bearing. When the rotor system is started or shut down, the electromagnetic bearing can be used to make the thrust plate and the stator of the bearing rotate in the bearing gap, which improves the low-speed performance of the bearing, extends the service life of the bearing, and can improve the safety and reliability of the bearing and the entire system.

[0362] Secondly, compared with the conventional gas-static-dynamic hybrid thrust bearing which combines a gas-static bearing and a gas-dynamic bearing, the foil-type gas-magnetic hybrid thrust bearing of the embodiment of the present invention has the advantage of fast response speed.

[0363] Third, by setting magnetic material on the foil, the foil can be deformed appropriately through the attraction of the magnetic poles of the electromagnetic bearing, thereby increasing the maximum pressure on one side of the lubricating air film in the bearing and preventing the leakage of the lubricating air flow, thereby improving the thrust plate's ability to resist disturbed eccentric collision with the wall, thereby also improving the bearing's load-bearing capacity.

[0364] Fourthly, a low-cost pressure sensor is used to collect the change of air film pressure, and the deformation of the foil is controlled by a simple control method, which can provide higher rotor damping, thereby improving rotor stability. In addition, due to the simple control method, the machining accuracy of the bearing is not required to be high.

[0365] Among them, the gas-magnetic hybrid thrust bearing can adopt a groove-type gas-magnetic hybrid thrust bearing.

[0366] like Figures 40 to 46 As shown, the groove type gas-magnetic hybrid thrust bearing 5200 includes:

[0367] A second thrust plate 5201, which is fixedly connected to the rotating shaft 100, and a third magnetic component is disposed on the second thrust plate 5201;

[0368] and a third stator 5202 and a fourth stator 5203 penetrating the rotating shaft 100 , wherein the third stator 5202 and the fourth stator 5203 are respectively disposed on opposite sides of the second thrust plate 5201 ;

[0369] In the third stator 5202 and the fourth stator 5203, each stator includes a second magnetic bearing 5204, and a plurality of fourth magnetic components capable of generating magnetic force with the third magnetic component are arranged on the second magnetic bearing 5204 in the circumferential direction. A second gap 5206 is provided between the second magnetic bearing 5204 and the second thrust plate 5201, and the second thrust plate 5201 can move in the axial direction of the rotating shaft 100 under the action of the magnetic force between the third magnetic component and the plurality of fourth magnetic components;

[0370] The end surface of the second thrust plate 5201 facing the third stator 5202 and the fourth stator 5203 , or the end surfaces of the third stator 5202 and the fourth stator 5203 facing the second thrust plate 5201 , are provided with second dynamic pressure generating grooves 5205 .

[0371] In the embodiment of the present invention, by providing the second gap 5206 and the second magnetic bearing 5204 in the thrust bearing 5200, the thrust bearing 5200 forms a gas-magnetic hybrid thrust bearing.

[0372] During operation, the gas bearing and the second magnetic bearing 5204 in the thrust bearing 5200 can work together. When the thrust bearing 5200 is in a stable working state, the support is achieved by relying on the gas bearing; and when the thrust bearing 5200 is in an unstable working state, the second magnetic bearing 5204 is relied upon to timely control and respond to the thrust bearing 5200.

[0373] It can be seen that the embodiments of the present invention can improve the dynamic performance and stability of the thrust bearing, especially under high-speed operation, and have strong anti-disturbance ability, thereby improving the load-bearing capacity of the thrust bearing. The thrust bearing of the embodiments of the present invention can meet the needs of high-speed rotor systems, such as gas turbines or gas turbine power generation combined units.

[0374] In the embodiment of the present invention, the outer diameters of the second thrust plate 5201 , the third stator 5202 , and the fourth stator 5203 may be equal, and the structures of the third stator 5202 and the fourth stator 5203 may be completely the same.

[0375] When the rotor system according to the embodiment of the present invention is applied to a gas turbine, the third stator 5202 and the fourth stator 5203 may be connected to the casing of the gas turbine via a connecting member.

[0376] In the embodiment of the present invention, when the second thrust plate 5201 rotates, the flowing gas existing in the second gap 5206 is pressed into the second dynamic pressure generating groove 5205, thereby generating pressure, so that the second thrust plate 5201 is non-contactly maintained in the axial direction. The magnitude of the pressure generated by the second dynamic pressure generating groove 5205 varies with the angle, groove width, groove length, groove depth, number of grooves and flatness of the second dynamic pressure generating groove 5205. In addition, the magnitude of the pressure generated by the second dynamic pressure generating groove 5205 is also related to the rotation speed of the second thrust plate 5201 and the second gap 5206. The parameters of the second dynamic pressure generating groove 5205 can be designed according to the actual working conditions. The second dynamic pressure generating groove 5205 can be formed on the third stator 5202 and the fourth stator 5203 by forging, rolling, etching or stamping, or the second dynamic pressure generating groove 5205 can be formed on the second thrust plate 5201 by forging, rolling, etching or stamping.

[0377] Optionally, the plurality of fourth magnetic components include a plurality of second permanent magnets, and the plurality of second permanent magnets are arranged circumferentially on the second magnetic bearing 5204;

[0378] Alternatively, the plurality of fourth magnetic components include a plurality of second electromagnets, which are circumferentially arranged on the second magnetic bearing 5204 , and each of the plurality of second electromagnets includes a second magnetic core 52041 arranged on the second magnetic bearing 5204 and a second coil 52042 wound around the second magnetic core 52041 .

[0379] In an embodiment of the present invention, when the slot-type gas-magnetic hybrid thrust bearing 5200 only requires a magnetic component to provide magnetic force but does not require magnetic control, the fourth magnetic component is preferably a second permanent magnet; when the slot-type gas-magnetic hybrid thrust bearing 5200 requires both magnetic force and magnetic control, the fourth magnetic component is preferably a second electromagnet.

[0380] When the fourth magnetic component is a second electromagnet, the second magnetic core 52041 can generate magnetic force by passing current through the second coil 52042. The magnitude of the magnetic force generated by the second magnetic core 52041 is different depending on the magnitude of the current passed through the second coil 52042; the magnetic poles of the second magnetic core 52041 are also different depending on the direction of the current passed through the second coil 52042.

[0381] Among them, since silicon steel sheets or silicon steel sheets have physical properties such as high magnetic permeability and low eddy current loss, in a preferred embodiment of the present invention, the second magnetic core 52041 can be formed by stacking several silicon steel sheets or silicon steel sheets.

[0382] Optionally, the second magnetic bearing 5204 includes:

[0383] A second magnetic bearing seat 52043, the second magnetic bearing seat 52043 is arranged opposite to the second thrust plate 5201, a plurality of second accommodating grooves 52044 are arranged circumferentially on the second magnetic bearing seat 52043, a plurality of fourth magnetic components are arranged in the plurality of second accommodating grooves 52044, and the magnetic poles of the plurality of fourth magnetic components face the side where the second thrust plate 5201 is located;

[0384] The second end cover 52045 and the first pressure ring 52046, the second end cover 52045 is arranged on the side of the second magnetic bearing seat 52043 away from the second thrust plate 5201, the first pressure ring 52046 is arranged on the side of the second magnetic bearing seat 52043 close to the second thrust plate 5201, the second end cover 52045 cooperates with the first pressure ring 52046 to fix the multiple fourth magnetic components on the second magnetic bearing seat 52043.

[0385] Among them, since silicon steel sheets or silicon steel sheets have physical properties such as high magnetic permeability and low eddy current loss, in a preferred embodiment of the present invention, the second magnetic bearing seat 52043 can be formed by stacking a number of silicon steel sheets or silicon steel sheets. The number of second accommodating grooves 52044 can be, but is not limited to, six or eight, and they are evenly arranged along the circumference of the second magnetic bearing seat 52043. In this way, the magnetic force between the second magnetic bearing 5204 and the second thrust plate 5201 can be more uniform and stable. It should be noted that multiple fourth magnetic components can also be arranged on the second magnetic bearing seat 52043 in other ways, which is not limited to this. The material of the second end cover 52045 can be a non-magnetic material, preferably a hard aluminum material. The material of the first pressure ring 52046 can be a non-magnetic material, preferably a hard aluminum material.

[0386] In the embodiment of the present invention, a second dynamic pressure generating groove 5205 may be provided on the first pressure ring 52046. To facilitate the processing of the second dynamic pressure generating groove 5205, the first pressure ring 52046 may be made of stainless steel.

[0387] Optionally, the third magnetic component includes a second magnetic material (not shown in the figure) arranged on the end surface of the second thrust plate 5201 facing the third stator 5202 and the fourth stator 5203;

[0388] The second magnetic material is distributed in strips on the second thrust plate 5201 to form a plurality of strip-shaped magnetic portions, and the plurality of strip-shaped magnetic portions are radial or annular;

[0389] Alternatively, the second magnetic components are distributed in a point shape on the second thrust plate 5201 .

[0390] In the embodiment of the present invention, the second magnetic material is distributed in strips or dots on the second thrust plate 5201, so that the magnetic force generated between the second magnetic material and the fourth magnetic component can be controlled within a reasonable range.

[0391] Optionally, the second dynamic pressure generating grooves 5205 are arranged in a radial or concentric circle shape, which is conducive to making the air film more evenly distributed in the second gap 5206.

[0392] Optionally, the second dynamic pressure generating groove 5205 includes a first spiral groove 52051 and a second spiral groove 52052, the first spiral groove 52051 surrounds the second spiral groove 52052, the spiral directions of the first spiral groove 52051 and the second spiral groove 52052 are opposite, and the end of the first spiral groove 52051 close to the second spiral groove 52052 is connected or disconnected with the end of the second spiral groove 52052 close to the first spiral groove 52051.

[0393] The distance from one end of the first spiral groove 52051 close to the second spiral groove 52052 to the axis of the rotating shaft 100 is equal to the distance from one end of the first spiral groove 52051 close to the second spiral groove 52052 to the outer peripheral edge of the third stator 5202 or the fourth stator 5203 or the second thrust plate 5201. Alternatively, the distance from one end of the second spiral groove 52052 close to the first spiral groove 52051 to the axis of the rotating shaft 100 is equal to the distance from one end of the second spiral groove 52052 close to the first spiral groove 52051 to the outer peripheral edge of the third stator 5202 or the fourth stator 5203 or the second thrust plate 5201.

[0394] In the embodiment of the present invention, by adopting the above-mentioned setting method of the second dynamic pressure generating groove 5205, the second thrust plate 5201 can be maintained in a non-contact manner in a desired manner when the rotating shaft 100 rotates forward or reverse, thereby making the rotating shaft 100 have the advantages of high load capacity and good stability.

[0395] Optionally, in the third stator 5202 and the fourth stator 5203, each stator is also provided with a first static pressure air intake throttle hole 5208, one end of the first static pressure air intake throttle hole 5208 is communicated with the second gap 5206, and the other end is connected to an external air source for conveying the external air source into the second gap 5206.

[0396] In the embodiment of the present invention, a gas static pressure bearing can be formed by providing the first static pressure air intake throttle hole 5208, so that the thrust bearing 5200 can constitute a gas dynamic static pressure-magnetic hybrid thrust bearing. The flow diameter of the first static pressure air intake throttle hole 5208 can be adjusted according to actual working conditions such as gas volume demand.

[0397] Optionally, in the third stator 5202 and the fourth stator 5203, each stator is provided with a plurality of first static pressure air intake throttle holes 5208, and the plurality of first static pressure air intake throttle holes 5208 are arranged at intervals along the circumference of the stator.

[0398] In the embodiment of the present invention, the plurality of first static pressure air intake throttle holes 5208 are arranged at intervals along the circumference of the stator, preferably at even intervals along the circumference of the stator, which is conducive to making the air film pressure in the second gap 5206 more uniform.

[0399] Optionally, in the third stator 5202 and the fourth stator 5203, the distance from the first static pressure air intake throttle hole 5208 to the axis of the rotating shaft 100 is greater than or equal to the distance from the first static pressure air intake throttle hole 5208 to the outer peripheral edge of the stator.

[0400] In the embodiment of the present invention, the arrangement of the first static pressure air intake throttle hole 5208 can make the gas static pressure bearing more stable. If the static pressure air intake throttle hole is too close to the axis of the rotating shaft 100, the air film cannot be effectively spread over the entire end surface of the second thrust plate 5201 in a timely manner, making the rotation of the second thrust plate 5201 unstable. Preferably, the distance from the first static pressure air intake throttle hole 5208 to the axis of the rotating shaft 100 is equal to the distance from the first static pressure air intake throttle hole 5208 to the outer peripheral edge of the stator.

[0401] Optionally, the groove type gas-magnetic hybrid thrust bearing 5200 further includes a second sensor 5207 , and a sensor probe of the second sensor 5207 is disposed in the second gap 5206 .

[0402] In the embodiment of the present invention, by providing the second sensor 5207, it is possible to detect in real time the parameters at the second gap 5206, such as the air film pressure at the second gap 5206. In this way, the second magnetic bearing 5204 can actively control the thrust bearing 5200 according to the detection result of the second sensor 5207, and can achieve a higher control accuracy.

[0403] Optionally, the second sensor 5207 includes a second sensor cover 52071 and a second sensor probe 52072, the first end of the second sensor probe 52072 is connected to the second sensor cover 52071, the second sensor cover 52071 is fixed on the second magnetic bearing 5204, and the second magnetic bearing 5204 is provided with a through hole for the second sensor probe 52072 to pass through; the second end of the second sensor probe 52072 passes through the through hole on the second magnetic bearing 5204 and extends to the second gap 5206, and the second end of the second sensor probe 52072 is flush with the side of the second magnetic bearing 5204 close to the second thrust disk 5201.

[0404] In the embodiment of the present invention, the second sensor 5207 can be more stably arranged on the second magnetic bearing 5204 through the structural form and installation method of the second sensor 5207. In addition, the second end of the second sensor probe 52072 is flush with the side of the second magnetic bearing 5204 close to the second thrust disk 5201. On the one hand, the second sensor probe 52072 can be prevented from being touched by the second thrust disk 5201, thereby facilitating the protection of the second sensor probe 52072; on the other hand, the air film in the second gap 5206 is not affected, thereby preventing the air film in the second gap 5206 from being disturbed.

[0405] Optionally, the second sensor 5207 is disposed between two adjacent fourth magnetic components.

[0406] In the embodiment of the present invention, at least one second sensor 5207 should be provided on each stator, preferably one second sensor 5207 , and the second sensor 5207 is preferably provided between two adjacent fourth magnetic components.

[0407] Optionally, the second sensor 5207 is any one or more of the following combinations:

[0408] A displacement sensor for detecting the position of the second thrust plate 5201;

[0409] A pressure sensor for detecting the air film pressure at the second gap 5206;

[0410] A speed sensor for detecting the rotation speed of the second thrust plate 5201;

[0411] An acceleration sensor for detecting the rotational acceleration of the second thrust plate 5201 .

[0412] The specific control method when the slot-type gas-magnetic hybrid thrust bearing (wherein the fourth magnetic component in the second magnetic bearing is an electromagnet) according to an embodiment of the present invention participates in the control process of the rotor system is described in detail below.

[0413] An embodiment of the present invention provides a control method for a slot-type gas-magnetic hybrid thrust bearing, comprising:

[0414] S531. Turn on the second magnetic bearings in the third stator and the fourth stator, and control the second thrust plate to move in the axial direction of the rotating shaft under the action of the magnetic force between the third magnetic component and the multiple fourth magnetic components, so that the difference between the second gap between the second thrust plate and the second magnetic bearing in the third stator and the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is less than or equal to a predetermined value.

[0415] S532. After the rotation speed of the rotating shaft is accelerated to the working rotation speed, the second magnetic bearings in the third stator and the fourth stator are closed.

[0416] S533: When the rotor system is shut down, start the second magnetic bearings in the third stator and the fourth stator.

[0417] S534: After the rotation speed of the rotating shaft is decelerated to zero, the second magnetic bearings in the third stator and the fourth stator are closed.

[0418] In the above process, after the second magnetic bearing is opened, the second thrust plate reaches a predetermined position between the third stator and the fourth stator under the action of the second magnetic bearing, and the second thrust plate has a second gap with the end faces of the third stator and the fourth stator.

[0419] As the shaft rotates, the second thrust plate starts to rotate relative to the third stator and the fourth stator under the condition of being lubricated by the airflow in the second gap to prevent wear. The specific process of opening the second magnetic bearing is: a current signal of a predetermined value is input to the second coil, and the second thrust plate reaches a predetermined position between the third stator and the fourth stator under the action of the second magnetic bearing.

[0420] As the rotation speed of the rotating shaft increases, the rotation speed of the second thrust plate also increases synchronously. When the rotation speed of the rotating shaft reaches the working speed, the air film pressure generated by the gas hydrodynamic bearing of the thrust bearing (a second gap is set between the second thrust plate and the third stator and the fourth stator to form the gas hydrodynamic bearing of the thrust bearing) can stabilize the second thrust plate, and the second magnetic bearing can be closed at that time.

[0421] When the rotor system shuts down, the second thrust plate slows down as the shaft slows down. In order to keep the shaft stable during the entire rotor system shutdown process, the second magnetic bearing is opened when the rotor system shuts down, and the second magnetic bearing can be closed after the second thrust plate stops completely.

[0422] The embodiment of the present invention also provides another control method of a slot-type gas-magnetic hybrid thrust bearing, comprising:

[0423] S541. Turn on the second magnetic bearings in the third stator and the fourth stator, and control the second thrust plate to move in the axial direction of the rotating shaft under the action of the magnetic force between the third magnetic component and the plurality of fourth magnetic components, so that the difference between the second gap between the second thrust plate and the second magnetic bearing in the third stator and the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is less than or equal to a predetermined value.

[0424] S542: After the rotation speed of the rotating shaft is accelerated to a first preset value, the second magnetic bearings in the third stator and the fourth stator are closed.

[0425] S543. When the rotation speed of the rotating shaft is decelerated to a second preset value, the second magnetic bearings in the third stator and the fourth stator are turned on.

[0426] S544: After the rotation speed of the rotating shaft is decelerated to zero, the second magnetic bearings in the third stator and the fourth stator are closed.

[0427] In the above process, after the second magnetic bearing is turned on, the second thrust plate reaches the predetermined position between the third stator and the fourth stator under the action of the second magnetic bearing, and the second thrust plate and the end faces of the third stator and the fourth stator all have a second gap. As the shaft rotates, the second thrust plate begins to rotate relative to the third stator and the fourth stator under the lubrication of the airflow in the second gap to prevent wear. The specific process of turning on the second magnetic bearing is: a current signal of a predetermined value is input to the second coil, and the second thrust plate reaches the predetermined position between the third stator and the fourth stator under the action of the second magnetic bearing.

[0428] As the rotation speed of the rotating shaft increases, the rotation speed of the second thrust plate also increases synchronously. When the rotation speed of the rotating shaft reaches a second preset value, for example, 5% to 30% of the rated speed, the gas hydrodynamic bearing of the thrust bearing (a second gap is set between the second thrust plate and the third stator and the fourth stator to form the gas hydrodynamic bearing of the slot-type gas-magnetic hybrid thrust bearing) generates an air film pressure that can stabilize the second thrust plate, and the second magnetic bearing can be closed at that time.

[0429] During the shutdown process of the rotor system, the second thrust plate decelerates as the shaft decelerates. When the rotation speed of the shaft is lower than a second preset value, for example 5% to 30% of the rated rotation speed, the air film pressure generated by the gas hydrodynamic bearing of the thrust bearing also decreases as the second thrust plate decelerates. Therefore, it is necessary to open the second magnetic bearing to keep the second thrust plate stable until the second thrust plate stops completely, and then the second magnetic bearing can be closed.

[0430] Optionally, the above method further includes:

[0431] When the load is on the second thrust plate, the second thrust plate moves in the axial direction of the rotating shaft under the action of the load, and the difference between the second gap between the second thrust plate and the second magnetic bearing in the third stator and the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is greater than a predetermined value, the second magnetic bearing in the third stator or the fourth stator is opened;

[0432] When the difference between the second gap between the second thrust plate and the second magnetic bearing in the third stator and the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is less than or equal to a predetermined value, the second magnetic bearing in the third stator or the fourth stator is closed.

[0433] When the load is applied to the second thrust plate, the second gap between the second thrust plate and the second magnetic bearing of the third stator or the fourth stator becomes smaller and approaches the second magnetic bearing on that side, the second sensor (the second sensor here is preferably a pressure sensor) obtains a signal of increased air pressure, and the second magnetic bearing needs to intervene at this time. The second magnetic bearing applies magnetic force to the second thrust plate to move it toward the second magnetic bearing on the other side, and when the second thrust plate reaches a new equilibrium position, the second magnetic bearing stops working.

[0434] Specifically, if the second gap between the second thrust plate and the second magnetic bearing in the third stator is smaller than the second gap between the second thrust plate and the second magnetic bearing in the fourth stator, and the difference between the second gap between the second thrust plate and the second magnetic bearing in the third stator and the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is greater than a predetermined value, the second magnetic bearing in the fourth stator is controlled so that the second thrust plate moves in the axial direction of the rotating shaft away from the fourth stator under the action of the magnetic force between the third magnetic component and the multiple fourth magnetic components.

[0435] If the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is smaller than the second gap between the second thrust plate and the second magnetic bearing in the third stator, and the difference between the second gap between the second thrust plate and the second magnetic bearing in the third stator and the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is greater than a predetermined value, the second magnetic bearing in the third stator is controlled so that the second thrust plate moves in the axial direction of the rotating shaft away from the third stator under the action of the magnetic force between the third magnetic component and the multiple fourth magnetic components.

[0436] Optionally, when the load is on the second thrust plate, the second thrust plate moves in the axial direction of the rotating shaft under the action of the load, and the difference between the second gap between the second thrust plate and the second magnetic bearing in the third stator and the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is greater than a predetermined value, the second magnetic bearing in the third stator or the fourth stator is opened, including:

[0437] When the load is on the second thrust plate, the second thrust plate moves in the axial direction of the rotating shaft under the action of the load, and the difference between the second gap between the second thrust plate and the second magnetic bearing in the third stator and the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is greater than a predetermined value, the second magnetic bearing in the third stator or the fourth stator is controlled to open at maximum power; or,

[0438] When the load is on the second thrust plate, the second thrust plate moves in the axial direction of the rotating shaft under the action of the load, and the difference between the second gap between the second thrust plate and the second magnetic bearing in the third stator and the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is greater than a predetermined value, the second magnetic bearing in the third stator or the fourth stator is controlled to turn on in a strobe manner according to a preset frequency.

[0439] When an external impact disturbance occurs, the second thrust plate may quickly approach the second magnetic bearing on one side, which may cause the second gap on that side to be too small instantly, so that the local gas flow rate at the second gap on that side approaches or even reaches the speed of sound, thereby inducing shock waves to produce air hammer self-excitation. The generation of shock waves will cause disturbances and chaos in the local gas flow, and its pressure will drop significantly in a step-like manner when the fluid velocity changes between the speed of sound and the subsonic speed. In this case, it is necessary to control the second magnetic bearing in the third stator or the fourth stator to open at maximum power, or to control the second magnetic bearing in the third stator or the fourth stator to open alternately in a stroboscopic manner at a preset frequency to provide a damping effect on the disturbance, thereby effectively suppressing external disturbances. When the second thrust plate returns to a balanced state, the second magnetic bearing stops working.

[0440] It should be noted that in the embodiment of the present invention, when both an electromagnetic bearing (the fourth magnetic component in the second magnetic bearing is an electromagnet, i.e., an electromagnetic bearing) and a gas static pressure bearing (the first static pressure air intake throttle hole provided on the third stator and the fourth stator, i.e., a gas static pressure bearing) are provided, the electromagnetic bearing and the gas static pressure bearing can serve as backup for each other. When one of them fails, fails, or fails to meet the opening condition, the other can serve as a backup bearing to play the same role. For example, when a fault of the electromagnetic bearing is detected, the external gas source is controlled to be opened to replace the electromagnetic bearing to perform the corresponding action, thereby improving the safety and reliability of the bearing.

[0441] In the embodiment of the present invention, when both the electromagnetic bearing and the gas static pressure bearing are provided, the step of “starting the static pressure bearing in the thrust bearing so that the thrust plate of the thrust bearing moves to a preset axial position” may include the following implementation modes:

[0442] Opening the second magnetic bearings of the third stator and the fourth stator; and / or starting an external gas source to deliver gas to the second gap through the first static pressure air inlet throttle hole;

[0443] The second thrust plate is controlled to move in the axial direction of the rotating shaft under the action of the magnetic force between the third magnetic component and the fourth magnetic component and / or the pushing action of the gas, so that the difference between the second gap between the second thrust plate and the second magnetic bearing in the third stator and the second gap between the second thrust plate and the second magnetic bearing in the fourth stator is less than or equal to the predetermined value.

[0444] In the above process, the advantage of the second magnetic bearing for convenient real-time control is utilized to actively balance the unbalanced mass of the second thrust plate or the vortex of the second thrust plate and other factors that cause the second thrust plate to be excessively deflected, so that the second thrust plate is fixed in a very small range in the axial direction of the rotating shaft. In addition, during the acceleration process of the second thrust plate, the position where the shock wave is generated (i.e., the supersonic part of the linear velocity) can be accurately located, and by controlling the current size and direction of the second magnetic bearing, etc., the second magnetic bearing can generate an opposite force to balance the shock wave. After the shock wave is stable, the control strategy of the second magnetic bearing is adjusted again to fix the second thrust plate in a very small range in the most energy-saving way.

[0445] In summary, the embodiments of the present invention have the following beneficial effects:

[0446] First, the electromagnetic bearing and the gas bearing work together to improve the dynamic performance and stability of the bearing under high-speed operation, and have strong resistance to disturbance, thereby improving the bearing's load-bearing capacity. At the same time, the electromagnetic bearing and the gas bearing adopt a parallel structure, which simplifies the structure, has a high degree of integration, is easy to process, manufacture and operate, and improves the comprehensive performance of the bearing. When the rotor system is started or shut down, the electromagnetic bearing can be used to make the thrust plate and the stator of the bearing rotate in the second gap, which improves the low-speed performance of the bearing, extends the service life of the bearing, and can improve the safety and reliability of the bearing and the entire system.

[0447] Secondly, compared with the conventional gas-dynamic-static hybrid thrust bearing which combines a gas-static bearing and a gas-dynamic-pressure bearing, the groove-type gas-magnetic hybrid thrust bearing of the embodiment of the present invention has the advantage of fast response speed.

[0448] Third, a gas static pressure bearing is added to form a groove-type dynamic static pressure-magnetic hybrid thrust bearing. When both the electromagnetic bearing and the gas static pressure bearing are provided, the bearing capacity is further increased. The electromagnetic bearing and the gas static pressure bearing can be used as backup for each other. When one of them fails, fails, or fails to meet the opening conditions, the other can serve as a backup bearing to play the same role. For example, when a fault in the electromagnetic bearing is detected, the control system controls the gas static pressure bearing to open to replace the electromagnetic bearing to perform the corresponding action, thereby improving the safety and reliability of the bearing.

[0449] Among them, the gas-magnetic hybrid radial bearing can adopt a groove-type gas-magnetic hybrid radial bearing.

[0450] like Figures 47 to 54 As shown, the groove type gas-magnetic hybrid radial bearing 6200 includes:

[0451] A fourth magnetic bearing 6201 sleeved on the rotating shaft 100, wherein a plurality of seventh magnetic components are circumferentially arranged on the fourth magnetic bearing 6201;

[0452] A third dynamic pressure generating groove 6202 is provided on the side wall of the fourth magnetic bearing 6201 facing the rotating shaft 100 or on the circumferential surface of the rotating shaft 100 facing the fourth magnetic bearing 6201;

[0453] There is a fourth gap 6203 between the fourth magnetic bearing 6201 and the rotating shaft 100 , and the rotating shaft 100 can move in the radial direction of the rotating shaft 100 under the magnetic force of the plurality of seventh magnetic components.

[0454] In the embodiment of the present invention, by providing the fourth gap 6203 and the fourth magnetic bearing 6201 in the radial bearing 6200, the radial bearing 6200 forms a gas-magnetic hybrid radial bearing.

[0455] During operation, the gas bearing in the radial bearing 6200 and the fourth magnetic bearing 6201 can work together. When the radial bearing 6200 is in a stable working state, the support is achieved by relying on the gas bearing; and when the radial bearing 6200 is in an unstable working state, the fourth magnetic bearing 6201 is relied upon to timely control and respond to the radial bearing 6200.

[0456] It can be seen that the embodiments of the present invention can improve the dynamic performance and stability of the radial bearing, especially under high-speed operation, and have strong anti-disturbance ability, thereby improving the load-bearing capacity of the radial bearing. The radial bearing of the embodiments of the present invention can meet the needs of high-speed rotor systems, such as gas turbines or gas turbine power generation combined units.

[0457] In the embodiment of the present invention, since silicon steel sheets or silicon steel sheets have physical properties such as high magnetic permeability and low eddy current loss, the rotating shaft 100 can be formed by stacking a plurality of silicon steel sheets or silicon steel sheets.

[0458] In an embodiment of the present invention, when the rotating shaft 100 rotates, the flowing gas present in the fourth gap 6203 is pressed into the third dynamic pressure generating groove 6202, thereby generating pressure, causing the rotating shaft 100 to float, so as to achieve non-contact maintenance of the rotating shaft 100 in the radial direction. The magnitude of the pressure generated by the third dynamic pressure generating groove 6202 varies with the angle, groove width, groove length, groove depth, number of grooves and flatness of the third dynamic pressure generating groove 6202. In addition, the magnitude of the pressure generated by the third dynamic pressure generating groove 6202 is also related to the rotation speed of the rotating shaft 100 and the fourth gap 6203. The parameters of the third dynamic pressure generating groove 6202 can be designed according to the actual working conditions. The third dynamic pressure generating groove 6202 can be formed on the fourth magnetic bearing 6201 or the rotating shaft by forging, rolling, etching or stamping.

[0459] Optionally, the plurality of seventh magnetic components include a plurality of fourth permanent magnets, and the plurality of fourth permanent magnets are arranged circumferentially on the fourth magnetic bearing 6201;

[0460] Alternatively, the multiple seventh magnetic components include multiple fourth electromagnets, which are circumferentially arranged on the fourth magnetic bearing 6201, and each of the multiple fourth electromagnets includes a fourth magnetic core 62011 arranged on the fourth magnetic bearing 6201 and a fourth coil 62012 wound around the fourth magnetic core 62011.

[0461] In an embodiment of the present invention, when the slot-type gas-magnetic hybrid radial bearing 6200 only requires a magnetic component to provide magnetic force but does not require magnetic control, the seventh magnetic component is preferably the fourth permanent magnet; when the foil-type gas-magnetic hybrid thrust bearing requires both magnetic force and magnetic control, the seventh magnetic component is preferably the fourth electromagnet.

[0462] When the seventh magnetic component is a fourth electromagnet, the fourth magnetic core 62011 can generate magnetic force by passing current through the fourth coil 62012. The magnitude of the magnetic force generated by the fourth magnetic core 62011 is different depending on the magnitude of the current passed through the fourth coil 62012; the magnetic poles of the fourth magnetic core 62011 are also different depending on the direction of the current passed through the fourth coil 62012.

[0463] Among them, since silicon steel sheets or silicon steel sheets have physical properties such as high magnetic permeability and low eddy current loss, in a preferred embodiment of the present invention, the fourth magnetic core 62011 can be formed by stacking several silicon steel sheets or silicon steel sheets.

[0464] Optionally, the fourth magnetic bearing 6201 includes:

[0465] A fourth magnetic bearing seat 62013, the fourth magnetic bearing seat 62013 is sleeved on the rotating shaft 100, a plurality of fourth accommodating grooves 62014 are circumferentially arranged on the fourth magnetic bearing seat 62013, a plurality of seventh magnetic components are arranged in the plurality of fourth accommodating grooves 62014, and the magnetic poles of the plurality of seventh magnetic components face the rotating shaft 100;

[0466] A second bearing shell 62015 sleeved outside the fourth magnetic bearing seat 62013;

[0467] A second bearing sleeve 62016 sleeved between the fourth magnetic bearing seat 62013 and the rotating shaft 100;

[0468] and, a fifth end cover 62017 and a sixth end cover 62018 respectively disposed at two ends of the second bearing shell 62015;

[0469] Among them, the second bearing sleeve 62016, the fifth end cover 62017 and the sixth end cover 62018 cooperate to fix the multiple seventh magnetic components on the fourth magnetic bearing seat 62013.

[0470] In the embodiment of the present invention, by providing the second bearing sleeve 62016, the gap between the fourth magnetic core 62011 and the fourth coil 62012 can be closed, so that a stable and uniform air film pressure is formed between the second bearing sleeve 62016 and the rotating shaft 100. In addition, by providing the second bearing sleeve 62016 with different radial thicknesses, the size of the fourth gap 6203 can be conveniently adjusted and controlled.

[0471] The width of the fourth gap 6203 between the second bearing sleeve 62016 and the rotating shaft 100 may be 5 μm to 12 μm, preferably 8 μm to 10 μm.

[0472] Among them, since silicon steel sheets or silicon steel sheets have physical properties such as high magnetic permeability and low eddy current loss, in a preferred embodiment of the present invention, the fourth magnetic bearing seat 62013 can be formed by stacking a number of silicon steel sheets or silicon steel sheets. The number of the fourth accommodating grooves 62014 can be but is not limited to six or eight, which are evenly arranged along the circumference of the fourth magnetic bearing seat 62013. In this way, the magnetic force between the fourth magnetic bearing 6201 and the rotating shaft 100 can be more uniform and stable. It should be noted that multiple seventh magnetic components can also be arranged on the fourth magnetic bearing seat 62013 in other ways, which is not limited to this. The material of the fifth end cover 62017 and the sixth end cover 62018 can both be non-magnetic materials, preferably hard aluminum materials. The material of the second bearing sleeve 62016 can be non-magnetic material, preferably hard aluminum material. The material of the second bearing shell 62015 can be non-magnetic material, preferably hard aluminum material.

[0473] Preferably, the fifth end cover 62017 and the sixth end cover 62018 are both provided with a boss whose outer diameter is the same as the inner diameter of the second bearing shell 62015, and the bosses of the fifth end cover 62017 and the sixth end cover 62018 are used to fix and press the silicon steel sheet or silicon steel sheet constituting the fourth magnetic bearing seat 62013 from both ends.

[0474] In the embodiment of the present invention, a third dynamic pressure generating groove 6202 may be provided on the second bearing sleeve 62016. To facilitate the processing of the third dynamic pressure generating groove 6202, the second bearing sleeve 62016 may be made of stainless steel. Specifically, the third dynamic pressure generating groove 6202 may be provided at the middle portion of the circumferential surface of the rotating shaft 100 corresponding to the second bearing sleeve 62016, or may be provided as two third dynamic pressure generating grooves 6202 symmetrically distributed on both sides of the middle portion and independent of each other; the third dynamic pressure generating groove 6202 may also be provided at the middle portion of the inner side wall of the second bearing sleeve 62016, or may be provided as two third dynamic pressure generating grooves 6202 symmetrically distributed on both ends of the inner side wall of the second bearing sleeve 62016 and independent of each other.

[0475] Optionally, the third dynamic pressure generating grooves 6202 are arranged in a matrix, which is conducive to making the air film more evenly distributed in the fourth gap 6203.

[0476] Optionally, the third dynamic pressure generating grooves 6202 are V-shaped grooves that are continuously or spaced apart.

[0477] In the embodiment of the present invention, by adopting the above-mentioned arrangement of the third dynamic pressure generating groove 6202, the rotating shaft 100 can be held in a non-contact manner in a desired manner when the rotating shaft 100 rotates forward or reverse, so that the rotating shaft 100 has the advantages of high load capacity and good stability. In addition to being arranged as a V-shaped groove, the third dynamic pressure generating groove 6202 can also be arranged as a herringbone groove or a groove of other shapes.

[0478] Optionally, a second static pressure air inlet throttle hole 6205 is also provided on the fourth magnetic bearing 6201 , one end of the second static pressure air inlet throttle hole 6205 is communicated with the fourth gap 6203 , and the other end is connected to an external air source for conveying the external air source into the fourth gap 6203 .

[0479] In the embodiment of the present invention, by providing the second static pressure air intake throttle hole 6205, a gas static pressure bearing can be formed, so that the slot-type gas-magnetic hybrid radial bearing 6200 can constitute a slot-type gas dynamic static pressure-magnetic hybrid radial bearing. The flow diameter of the second static pressure air intake throttle hole 6205 can be adjusted according to actual working conditions such as gas volume demand.

[0480] Optionally, the second static pressure air intake throttle hole 6205 is divided into at least two branches in the fourth magnetic bearing 6201 and connected to the fourth gap 6203 .

[0481] In the embodiment of the present invention, the second static pressure air intake throttle hole 6205 can pass through the fifth end cover 62017 or the sixth end cover 62018, the fourth magnetic bearing 6201 and the second bearing sleeve 62016 in sequence to connect the external air source with the fourth gap 6203. Further, the second static pressure air intake throttle hole 6205 can be divided into two or more branches connected to the fourth gap 6203, so that the air film pressure in the fourth gap 6203 is more uniform. Further, an annular groove can be provided on the fifth end cover 62017 or the sixth end cover 62018, and a plurality of second static pressure air intake throttle holes 6205 can be provided in the annular area corresponding to the annular groove of the fourth magnetic bearing 6201, for example, a second static pressure air intake throttle hole 6205 is provided in each fourth magnetic core 62011 or in every two adjacent fourth magnetic cores 62011. Among them, the flow diameter of the second static pressure air intake throttle hole 6205 and the branch can be adjusted according to the actual working conditions such as the gas volume demand.

[0482] Optionally, the slot-type gas-magnetic hybrid radial bearing 6200 further includes a plurality of fourth sensors 6204 arranged at intervals along the circumferential direction of the fourth magnetic bearing 6201 , wherein a sensor probe of each fourth sensor 6204 is arranged in the fourth gap 6203 .

[0483] In the embodiment of the present invention, by providing the fourth sensor 6204, it is possible to detect in real time the parameters at the fourth gap 6203, such as the air film pressure at the fourth gap 6203. In this way, the fourth magnetic bearing 6201 can actively control the radial bearing 6200 according to the detection result of the fourth sensor 6204, and can achieve a higher control accuracy.

[0484] Optionally, among the multiple fourth sensors 6204, each fourth sensor 6204 includes a fourth sensor cover 62041 and a fourth sensor probe 62042, the first end of the fourth sensor probe 62042 is connected to the fourth sensor cover 62041, the fourth sensor cover 62041 is fixed on the fourth magnetic bearing 6201, and the fourth magnetic bearing 6201 is provided with a through hole for the fourth sensor probe 62042 to pass through; the second end of the fourth sensor probe 62042 passes through the through hole on the fourth magnetic bearing 6201 and extends to the fourth gap 6203, and the second end of the fourth sensor probe 62042 is flush with the side of the fourth magnetic bearing 6201 close to the rotating shaft 100.

[0485] In the embodiment of the present invention, the fourth sensor 6204 can be more stably arranged on the fourth magnetic bearing 6201 through the structural form and installation method of the fourth sensor 6204. In addition, the second end of the fourth sensor probe 62042 is flush with the side of the fourth magnetic bearing 6201 close to the shaft 100. On the one hand, the fourth sensor probe 62042 can be prevented from being touched by the shaft 100, thereby facilitating the protection of the fourth sensor probe 62042; on the other hand, it will not affect the air film in the fourth gap 6203, thereby preventing the air film in the fourth gap 6203 from being disturbed.

[0486] In the embodiment of the present invention, the number of the fourth sensors 6204 can be the same as the number of the seventh magnetic components. The fourth sensors 6204 can be arranged between two adjacent seventh magnetic components, or can be arranged through the seventh magnetic component, which is not limited in the embodiment of the present invention. Each fourth sensor 6204 is preferably arranged in the middle of the fourth magnetic bearing 6201.

[0487] Optionally, the plurality of fourth sensors 6204 are any one or more combinations of the following:

[0488] A displacement sensor for detecting the position of the rotating shaft 100;

[0489] A pressure sensor for detecting the air film pressure at the fourth gap 6203;

[0490] A speed sensor for detecting the rotation speed of the shaft 100;

[0491] An acceleration sensor is used to detect the rotation acceleration of the rotating shaft 100.

[0492] The specific control method when the slot-type gas-magnetic hybrid radial bearing (wherein the seventh magnetic component in the fourth magnetic bearing is an electromagnet) of an embodiment of the present invention participates in the control process of the rotor system is described in detail below.

[0493] An embodiment of the present invention provides a control method for a slot-type gas-magnetic hybrid radial bearing, comprising:

[0494] S631, start the fourth magnetic bearing, control the rotating shaft to move in the radial direction of the rotating shaft under the magnetic force of the plurality of seventh magnetic components, and push the rotating shaft to a preset radial position.

[0495] S632. After the rotation speed of the shaft is accelerated to the working speed, the fourth magnetic bearing is closed.

[0496] S633. When the rotor system is shut down, start the fourth magnetic bearing.

[0497] S634. After the rotation speed of the rotating shaft is decelerated to zero, the fourth magnetic bearing is closed.

[0498] In the above process, after the fourth magnetic bearing is turned on, the rotating shaft is lifted up by the fourth magnetic bearing and reaches a preset radial position, and a fourth gap is formed between the fourth magnetic bearing and the rotating shaft.

[0499] As the shaft rotates, the shaft begins to rotate under the lubrication of the airflow in the fourth gap to prevent wear. The specific process of opening the fourth magnetic bearing is: inputting a current signal of a predetermined value into the fourth coil, and the shaft is lifted up by the fourth magnetic bearing and reaches a preset radial position.

[0500] As the rotation speed of the rotating shaft increases, when the rotation speed of the rotating shaft reaches the operating speed, the air film pressure generated by the gas hydrodynamic bearing of the radial bearing (the fourth gap is set between the fourth magnetic bearing and the rotating shaft to form the gas hydrodynamic bearing of the radial bearing) can stabilize the rotating shaft, and the fourth magnetic bearing can be closed at that time.

[0501] When the rotor system stops, the shaft slows down. In order to keep the shaft stable during the entire rotor system shutdown process, the fourth magnetic bearing is opened when the rotor system stops, and the fourth magnetic bearing can be closed after the shaft stops completely.

[0502] The embodiment of the present invention also provides another control method of a slot-type gas-magnetic hybrid radial bearing, comprising:

[0503] S641, start the fourth magnetic bearing, control the rotating shaft to move in the radial direction of the rotating shaft under the magnetic force of the plurality of seventh magnetic components, and push the rotating shaft to a preset radial position.

[0504] S642: After the rotation speed of the rotating shaft is accelerated to a first preset value, the fourth magnetic bearing is closed.

[0505] S643. When the rotation speed of the rotating shaft is accelerated to the first-order critical speed or the second-order critical speed, the fourth magnetic bearing is turned on.

[0506] Specifically, when the gas flow velocity at the fourth gap between the rotating shaft and the fourth magnetic bearing reaches the first-order critical velocity or the second-order critical velocity, the fourth magnetic bearing is opened until the rotating shaft returns to the equilibrium radial position.

[0507] Optionally, when the rotation speed of the rotating shaft is accelerated to a first-order critical speed or a second-order critical speed, the fourth magnetic bearing is turned on, including:

[0508] When the rotation speed of the rotating shaft is accelerated to the first-order critical speed or the second-order critical speed, the fourth magnetic bearing is controlled to open at maximum power; or,

[0509] When the rotation speed of the rotating shaft is accelerated to the first-order critical speed or the second-order critical speed, the fourth magnetic bearing is controlled to be turned on in a stroboscopic manner according to a preset frequency.

[0510] S644. After the rotor system smoothly passes the first-order critical speed or the second-order critical speed, close the fourth magnetic bearing.

[0511] S645. During the shutdown of the rotor system, when the rotor system decelerates to the first-order critical speed or the second-order critical speed, the fourth magnetic bearing is turned on.

[0512] Specifically, when the gas flow velocity at the fourth gap between the rotating shaft and the fourth magnetic bearing is decelerated to the first-order critical velocity or the second-order critical velocity, the fourth magnetic bearing is opened until the rotating shaft returns to the equilibrium radial position.

[0513] Optionally, when the rotation speed of the rotating shaft is decelerated to a first-order critical speed or a second-order critical speed, the fourth magnetic bearing is started, including:

[0514] When the rotation speed of the rotating shaft is decelerated to the first-order critical speed or the second-order critical speed, the fourth magnetic bearing is controlled to open at maximum power; or,

[0515] When the rotation speed of the rotating shaft is decelerated to the first-order critical speed or the second-order critical speed, the fourth magnetic bearing is controlled to be turned on in a stroboscopic manner according to a preset frequency.

[0516] S646. After the rotor system smoothly passes the first-order critical speed or the second-order critical speed, close the fourth magnetic bearing.

[0517] S647. When the rotation speed of the rotating shaft is decelerated to a second preset value, the fourth magnetic bearing is turned on.

[0518] S648. After the rotation speed of the shaft is decelerated to zero, the fourth magnetic bearing is closed.

[0519] In the above process, after the fourth magnetic bearing is turned on, the rotating shaft is lifted up by the fourth magnetic bearing and reaches a preset radial position, and a fourth gap is formed between the fourth magnetic bearing and the rotating shaft.

[0520] As the shaft rotates, the shaft begins to rotate under the lubrication of the airflow in the fourth gap to prevent wear. The specific process of opening the fourth magnetic bearing is: inputting a current signal of a predetermined value into the fourth coil, and the shaft is lifted up by the fourth magnetic bearing and reaches a preset radial position.

[0521] As the rotation speed of the rotating shaft increases, when the rotation speed of the rotating shaft reaches a first preset value, for example 5% to 30% of the rated speed, the air film pressure generated by the gas hydrodynamic bearing of the radial bearing (the fourth gap is set between the fourth magnetic bearing and the rotating shaft to form the gas hydrodynamic bearing of the radial bearing) can stabilize the rotating shaft, and the fourth magnetic bearing can be closed at that time.

[0522] During the shutdown of the rotor system, the shaft decelerates. When the shaft speed drops to a second preset value, such as 5% to 30% of the rated speed, the fourth magnetic bearing is opened and the fourth magnetic bearing can be closed after the shaft stops completely.

[0523] Optionally, the method further includes:

[0524] When the fourth gap between the rotating shaft and the fourth magnetic bearing changes, the fourth magnetic bearing is turned on, so that the rotating shaft moves in a direction away from the side where the gap becomes smaller under the magnetic force of the plurality of seventh magnetic components;

[0525] After the shaft is in a balanced radial position, the fourth magnetic bearing is closed.

[0526] When the load is applied to the rotating shaft, causing the rotating shaft to gradually drop and approach the fourth magnetic bearing below, the fourth sensor (the fourth sensor here is preferably a pressure sensor) obtains a signal of increased air pressure, and the fourth magnetic bearing needs to intervene at this time. The fourth magnetic bearing applies magnetic force to the rotating shaft to make it levitate upward, and when the rotating shaft reaches a new equilibrium position, the fourth magnetic bearing stops working.

[0527] When an external impact disturbance occurs, the shaft may quickly approach the fourth magnetic bearing, which may cause the gap between the shaft and the fourth magnetic bearing to be too small in an instant, causing the local gas flow velocity at the gap reduction to approach or even reach the speed of sound, thereby inducing shock waves to produce air hammer self-excitation. The generation of shock waves will cause disturbances and chaos in the local gas flow, and its pressure will drop significantly in a step-like manner when the fluid velocity changes between the speed of sound and the subsonic speed. In this case, it is necessary to control the seventh magnetic component of the fourth magnetic bearing to open in turn at a preset frequency to provide a damping effect on the disturbance, thereby effectively suppressing external disturbances. After the shaft returns to a new equilibrium radial position, the fourth magnetic bearing stops working.

[0528] It should be noted that in the embodiment of the present invention, when an electromagnetic bearing (the seventh magnetic component in the fourth magnetic bearing is an electromagnet, i.e., an electromagnetic bearing) and a gas static pressure bearing (the second static pressure air intake throttle hole provided on the fourth magnetic bearing, i.e., a gas static pressure bearing) are provided at the same time, the electromagnetic bearing and the gas static pressure bearing can be used as backup for each other. When one of them fails, fails, or fails to meet the opening condition, the other can serve as a backup bearing to play the same role. For example, when an electromagnetic bearing failure is detected, the external gas source is controlled to be opened to replace the electromagnetic bearing to perform the corresponding action, thereby improving the safety and reliability of the bearing.

[0529] In the embodiment of the present invention, when both the electromagnetic bearing and the gas hydrostatic bearing are provided, the step of “starting the hydrostatic bearing in the radial bearing to move the rotating shaft to a preset radial position” may include the following implementations:

[0530] Turning on the fourth magnetic bearing; and / or starting an external gas source to deliver gas to the fourth gap through the second static pressure air inlet throttle hole;

[0531] The rotating shaft is controlled to move in the radial direction of the rotating shaft under the magnetic force of the plurality of seventh magnetic components and / or the pushing action of the gas, so that the rotating shaft moves to a preset radial position.

[0532] In the above process, the advantage of the fourth magnetic bearing for convenient real-time control is utilized to actively balance the unbalanced mass of the shaft or the vortex of the shaft, which may cause excessive deviation of the shaft, so that the shaft is fixed in a very small range in the radial direction. In addition, during the acceleration process of the shaft, the location where the shock wave is generated (i.e., the supersonic portion of the linear velocity) can be accurately located, and by controlling the current size and direction of the fourth magnetic bearing, the fourth magnetic bearing can generate an opposite force to balance the shock wave. After the shock wave is stable, the control strategy of the fourth magnetic bearing is adjusted again to fix the shaft in a very small range in the most energy-efficient way.

[0533] In summary, the embodiments of the present invention have the following beneficial effects:

[0534] First, the electromagnetic bearing and the gas bearing work together to improve the dynamic performance and stability of the bearing under high-speed operation, and have strong resistance to disturbance, thereby improving the bearing's load-bearing capacity. At the same time, the electromagnetic bearing and the gas bearing adopt a nested structure, which simplifies the structure, has a high degree of integration, is easy to process, manufacture and operate, and improves the comprehensive performance of the bearing. When the rotor system is started or shut down, the electromagnetic bearing can be used to make the thrust plate and the stator of the bearing rotate in the first gap, which improves the low-speed performance of the bearing, extends the service life of the bearing, and can improve the safety and reliability of the bearing and the entire system.

[0535] Secondly, compared with the conventional gas-hydrodynamic-static hybrid thrust bearing which combines a gas-hydrostatic bearing and a gas-hydrodynamic bearing, the groove-type gas-magnetic hybrid radial bearing of the embodiment of the present invention has the advantage of fast response speed.

[0536] Third, a gas static pressure bearing is added to form a groove-type dynamic static pressure-magnetic hybrid thrust bearing. When both the electromagnetic bearing and the gas static pressure bearing are provided, the bearing capacity is further increased. The electromagnetic bearing and the gas static pressure bearing can be used as backup for each other. When one of them fails, fails, or fails to meet the opening conditions, the other can serve as a backup bearing to play the same role. For example, when a fault in the electromagnetic bearing is detected, the control system controls the gas static pressure bearing to open to replace the electromagnetic bearing to perform the corresponding action, thereby improving the safety and reliability of the bearing.

[0537] In some embodiments, in the rotor system, the thrust bearing and a radial bearing adjacent to the thrust bearing may be integrated into one to form an integrated bearing.

[0538] like Figures 55 to 64 As shown, the integrated bearing 1000 includes:

[0539] A third bearing shell 1001, which is a hollow rotating body and is provided with a first accommodating cavity and a second accommodating cavity;

[0540] A radial sub-bearing 1002 is disposed in the first accommodating cavity. The radial sub-bearing 1002 is passed through the rotating shaft 100. A fifth gap 1004 is defined between the radial sub-bearing 1002 and the rotating shaft 100.

[0541] And, a thrust sub-bearing 1003 is arranged in the second accommodating cavity, and the thrust sub-bearing 1003 includes a third thrust plate 10031, and a fifth stator 10032 and a sixth stator 10033 respectively arranged on both sides of the third thrust plate 10031, the third thrust plate 10031 is fixedly connected to the rotating shaft 100, and the fifth stator 10032 and the sixth stator 10033 are both penetrated on the rotating shaft 100; in the fifth stator 10032 and the sixth stator 10033, each stator has a sixth gap 1005 with the third thrust plate 10031.

[0542] In the embodiment of the present invention, the radial sub-bearing 1002 and the thrust sub-bearing 1003 are integrated in one bearing shell, which is easy to process and install, has the characteristics of simplified structure and high integration, and can effectively ensure the coaxiality of the radial sub-bearing 1002 and the thrust sub-bearing 1003 during processing and installation. In addition, since the fifth gap 1004 is provided in the radial sub-bearing 1002 and the sixth gap 1005 is provided in the thrust sub-bearing 1003, the bearing of the present invention is a non-contact bearing, which can meet the requirements of high-speed rotation of the rotor.

[0543] The material of the third bearing shell 1001 may be a non-magnetic material, preferably a hard aluminum material.

[0544] The fifth stator 10032 and the third bearing shell 1001 may be integrally formed, and the sixth stator 10033 and the third bearing shell 1001 may be detachably connected.

[0545] When the rotor system according to the embodiment of the present invention is applied to a gas turbine or a gas turbine power generation unit, the third bearing shell 1001 may be connected to the casing of the gas turbine via a connecting piece.

[0546] In the embodiment of the present invention, the radial sub-bearing 1002 and the thrust sub-bearing 1003 may both include magnetic bearings, wherein the structure of the magnetic bearing provided in the radial sub-bearing 1002 is as follows:

[0547] The radial sub-bearing 1002 includes a fifth magnetic bearing 10021 sleeved on the rotating shaft 100, the fifth magnetic bearing 10021 is detachably installed in the first accommodating cavity, and a plurality of eighth magnetic components are circumferentially arranged on the fifth magnetic bearing 10021;

[0548] The rotating shaft 100 can move in the radial direction of the rotating shaft 100 under the magnetic force of the plurality of eighth magnetic components.

[0549] Furthermore, the fifth magnetic bearing 10021 includes:

[0550] A fifth magnetic bearing seat, the fifth magnetic bearing seat is sleeved on the rotating shaft 100, a plurality of fifth accommodating grooves are circumferentially arranged on the fifth magnetic bearing seat, a plurality of eighth magnetic components are arranged in the plurality of fifth accommodating grooves, and the magnetic poles of the plurality of eighth magnetic components face the rotating shaft 100;

[0551] And, a third bearing sleeve 10022 is sleeved between the fifth magnetic bearing seat and the rotating shaft 100, and the third bearing sleeve 10022 cooperates with the fifth magnetic bearing seat to fix the plurality of eighth magnetic components on the fifth magnetic bearing seat.

[0552] For other specific implementations of providing a magnetic bearing in the radial sub-bearing 1002 , reference may be made to the relevant description in the tenth embodiment, and the same beneficial effects can be achieved. To avoid repetition, no further description will be given.

[0553] In an embodiment of the present invention, the integrated bearing 1000 may further include a seventh end cover 1006, which is disposed at the end of the third bearing shell 1001 close to the first accommodating cavity, and the seventh end cover 1006 abuts against the fifth magnetic bearing seat, for fixing the radial sub-bearing 1002 in the first accommodating cavity.

[0554] In the embodiment of the present invention, both the radial sub-bearing 1002 and the thrust sub-bearing 1003 may include magnetic bearings, wherein the structure of the magnetic bearing provided in the thrust sub-bearing 1003 is as follows:

[0555] In the fifth stator 10032 and the sixth stator 10033, each stator includes a sixth magnetic bearing 10034, and a plurality of ninth magnetic components are arranged on the sixth magnetic bearing 10034 along the circumferential direction;

[0556] The third thrust disk 10031 is provided with a tenth magnetic component, and the third thrust disk 10031 can move in the axial direction of the rotating shaft 100 under the action of the magnetic force between the plurality of ninth magnetic components and the tenth magnetic component.

[0557] Further, the sixth magnetic bearing 10034 includes:

[0558] A sixth magnetic bearing seat, the sixth magnetic bearing seat is arranged opposite to the third thrust plate 10031, a plurality of sixth receiving grooves are arranged circumferentially on the sixth magnetic bearing seat, a plurality of ninth magnetic components are arranged in the plurality of sixth receiving grooves, and the magnetic poles of the plurality of ninth magnetic components face the side where the third thrust plate 10031 is located;

[0559] The second pressure ring is arranged on the side of the sixth magnetic bearing seat close to the third thrust plate 10031, and the second pressure ring cooperates with the sixth magnetic bearing seat to fix the plurality of ninth magnetic components on the sixth magnetic bearing seat.

[0560] For other specific implementations of providing a magnetic bearing in the thrust sub-bearing 1003, reference may be made to the relevant description in the tenth embodiment, and the same beneficial effects can be achieved. To avoid repetition, no further description will be given.

[0561] In the embodiment of the present invention, by arranging a magnetic bearing in the integrated bearing 1000, especially an electromagnetic bearing (the eighth magnetic component in the fifth magnetic bearing 10021 is an electromagnet, and the ninth magnetic component in the sixth magnetic bearing 10034 is an electromagnet), when the rotor system is started or shut down, the electromagnetic bearing can be used to make the thrust plate and stator as well as the rotating shaft and the bearing sleeve in the integrated bearing 1000 rotate in the gap, thereby improving the low-speed performance of the integrated bearing 1000, extending the service life of the integrated bearing 1000, and being able to improve the safety and reliability of the integrated bearing 1000 and the entire rotor system.

[0562] In the embodiment of the present invention, the fifth stator 10032 can be integrally formed with the third bearing shell 1001 , and the sixth stator 10033 can be detachably connected to the third bearing shell 1001 .

[0563] In the embodiment of the present invention, both the radial sub-bearing 1002 and the thrust sub-bearing 1003 may be provided with a dynamic pressure generating groove, wherein the structure of the dynamic pressure generating groove provided in the radial sub-bearing 1002 is as follows:

[0564] A fourth dynamic pressure generating groove 10023 is provided on the side wall of the radial sub-bearing 1002 facing the rotating shaft 100 , or on the circumferential surface of the rotating shaft 100 facing the radial sub-bearing 1002 .

[0565] Furthermore, the fourth dynamic pressure generating grooves 10023 are arranged in a matrix.

[0566] Furthermore, the fourth dynamic pressure generating grooves 10023 are V-shaped grooves that are arranged continuously or at intervals.

[0567] For other specific implementations of setting the dynamic pressure generating grooves in the radial sub-bearing 1002, reference may be made to the relevant descriptions in the twelfth embodiment, and the same beneficial effects can be achieved. To avoid repetition, they will not be described in detail.

[0568] In the embodiment of the present invention, both the radial sub-bearing 1002 and the thrust sub-bearing 1003 may be provided with a dynamic pressure generating groove, wherein the structure of the dynamic pressure generating groove provided in the thrust sub-bearing 1003 is as follows:

[0569] A fifth dynamic pressure generating groove 10035 is provided on the end surface of the third thrust plate 10031 facing the fifth stator 10032 and the sixth stator 10033 , or on the end surfaces of the fifth stator 10032 and the sixth stator 10033 facing the third thrust plate 10031 .

[0570] Furthermore, the fifth dynamic pressure generating grooves 10035 are arranged in a radial or concentric circle shape.

[0571] Furthermore, the fifth dynamic pressure generating groove 10035 includes a first spiral groove and a second spiral groove, the first spiral groove surrounds the second spiral groove, the spiral directions of the first spiral groove and the second spiral groove are opposite, and the end of the first spiral groove close to the second spiral groove is connected or disconnected with the end of the second spiral groove close to the first spiral groove.

[0572] For other specific implementations of setting the dynamic pressure generating groove in the thrust sub-bearing 1003, reference can be made to the relevant description in the tenth embodiment, and the same beneficial effects can be achieved. To avoid repetition, they will not be described in detail.

[0573] In the embodiment of the present invention, by providing a dynamic pressure generating groove in the integrated bearing 1000, the integrated bearing 1000 includes a dynamic pressure gas bearing. When the electromagnetic bearing and the dynamic pressure gas bearing are provided at the same time, the dynamic performance and stability of the integrated bearing 1000 under high-speed operation are improved, and the anti-disturbance ability is strong, thereby improving the bearing's load capacity. At the same time, the electromagnetic bearing and the dynamic pressure gas bearing adopt a nested parallel structure, which simplifies the structure, has a high degree of integration, is easy to process, manufacture and operate, and improves the comprehensive performance of the integrated bearing 1000.

[0574] In the embodiment of the present invention, the integrated bearing 1000 may also be provided with a static pressure air intake throttle hole, and its structure is as follows:

[0575] The third bearing housing 1001 is also provided with a third static pressure air intake throttle hole 1007;

[0576] Among them, one end of the third static pressure air intake throttle hole 1007 is connected to the external air source, and the other end is connected to the fifth gap 1004 through the radial sub-bearing 1002, and / or is connected to the sixth gap 1005 through the fifth stator 10032 and the sixth stator 10033, which is used to transport the external air source to the fifth gap 1004 and / or the sixth gap 1005.

[0577] In the embodiment of the present invention, a static air intake throttle hole can also be provided through the integrated bearing 1000, so that the integrated bearing 1000 includes a gas static pressure bearing. In the case where both the electromagnetic bearing and the gas static pressure bearing are provided, the bearing capacity of the integrated bearing 1000 can be further increased. In addition, the electromagnetic bearing and the gas static pressure bearing can be used as backup for each other. When one of them fails, fails, or cannot meet the opening conditions, the other can serve as a backup bearing to play the same role. For example, when a fault of the electromagnetic bearing is detected, the gas static pressure bearing is controlled to open to replace the electromagnetic bearing to perform the corresponding action, thereby improving the safety and reliability of the integrated bearing 1000.

[0578] For other specific implementations of the above-mentioned integrated bearing 1000 with a static pressure air intake throttle hole, reference may be made to the relevant descriptions in Embodiment 10 and Embodiment 12, and the same beneficial effects can be achieved. To avoid repetition, they will not be described in detail.

[0579] In the embodiment of the present invention, both the radial sub-bearing 1002 and the thrust sub-bearing 1003 may be provided with sensors, and their structural forms are as follows:

[0580] A fifth sensor (not shown in the figure) is disposed on the radial sub-bearing 1002 , and a sensor probe of the fifth sensor is disposed in the fifth gap 1004 .

[0581] In this way, the parameters at the fifth gap 1004 can be detected in real time, such as the air film pressure at the fifth gap 1004. In this way, the fifth magnetic bearing 10021 can actively control the radial sub-bearing 102 according to the detection result of the fifth sensor, and can achieve higher control accuracy.

[0582] Optionally, among multiple fifth sensors, each fifth sensor includes a first sensor cover and a fifth sensor probe, the first end of the fifth sensor probe is connected to the fifth sensor cover, the fifth sensor cover is fixed on the fifth magnetic bearing 10021, and the fifth magnetic bearing 10021 is provided with a through hole for the fifth sensor probe to pass through; the second end of the fifth sensor probe passes through the through hole on the fifth magnetic bearing 10021 and extends to the fifth gap 1004, and the second end of the fifth sensor probe is flush with the side of the fifth magnetic bearing 10021 close to the rotating shaft 100.

[0583] In this way, the fifth sensor can be more stably arranged on the fifth magnetic bearing 10021. In addition, the second end of the sensor probe is flush with the side of the fifth magnetic bearing 10021 close to the rotating shaft 100. On the one hand, the sensor probe can be prevented from being touched by the rotating shaft 100, thereby facilitating protection of the sensor probe; on the other hand, it will not affect the air film in the fifth gap 1004, thereby preventing the air film in the fifth gap 1004 from being disturbed.

[0584] A sixth sensor (not shown in the figure) is arranged on the thrust bearing 1003 , and a sensor probe of the sixth sensor is arranged in the sixth gap 1005 .

[0585] In this way, the parameters at the sixth gap 1005 can be detected in real time, such as the air film pressure at the sixth gap 1005. In this way, the sixth magnetic bearing 10034 can actively control the thrust bearing 103 according to the detection result of the sixth sensor, and can achieve higher control accuracy.

[0586] Optionally, the sixth sensor includes a sixth sensor cover and a sixth sensor probe, the first end of the sixth sensor probe is connected to the sixth sensor cover, the sixth sensor cover is fixed on the sixth magnetic bearing 10034, and the sixth magnetic bearing 10034 is provided with a through hole for the sixth sensor probe to pass through; the second end of the sixth sensor probe passes through the through hole on the sixth magnetic bearing 10034 and extends to the sixth gap 1005, and the second end of the sixth sensor probe is flush with the side of the sixth magnetic bearing 10034 close to the third thrust disk 10031.

[0587] In this way, the sixth sensor can be more stably arranged on the sixth magnetic bearing 10034. In addition, the second end of the sixth sensor probe is flush with the side of the sixth magnetic bearing 10034 close to the third thrust disk 10031. On the one hand, the sixth sensor probe can be prevented from being touched by the third thrust disk 10031, thereby facilitating the protection of the sixth sensor probe; on the other hand, it will not affect the air film in the sixth gap 1005, thereby preventing the air film in the sixth gap 1005 from being disturbed.

[0588] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A mobile charging vehicle, characterized in that: include: A mobile device, and a fuel storage tank, a gas turbine generator set, an electric energy storage device, a charging device and a control system arranged on the mobile device; The fuel storage tank, the gas turbine generator set, the electric energy storage device and the charging device are connected in sequence, and the control system is electrically connected to the gas turbine generator set, the electric energy storage device and the charging device respectively; The gas turbine generator set is provided with an exhaust gas discharge pipe; The mobile device includes a driving mechanism, wheels, a chassis, a carriage and a cab; The gas turbine generator set comprises at least two parallel generator set units, each generator set unit comprises a micro gas turbine, a generator and a rotating shaft, and the micro gas turbine is used to drive the generator to rotate and generate electricity; The micro gas turbine includes a compressor and a turbine, and the generator, the compressor and the turbine are sequentially connected through the rotating shaft to form a rotor system of a generator unit; The shaft body of the rotating shaft is an integrated structure, and the rotating shaft is arranged horizontally or vertically; The rotating shaft is also provided with a thrust bearing and at least two radial bearings, and the thrust bearing and the two radial bearings are non-contact bearings; The rotor system further includes a first casing and a second casing, wherein the first casing is connected to the second casing; The generator, the thrust bearing and the two radial bearings are all arranged in the first casing, the compressor and the turbine are both arranged in the second casing, and the impeller of the compressor and the impeller of the turbine are arranged side by side in the second casing; The thrust bearing is arranged at a preset position on a side of the turbine close to the compressor, and the preset position is a position where the center of gravity of the rotor system is located between two radial bearings that are farthest apart from each other among the at least two radial bearings; In the rotor system, the thrust bearing and the radial bearing adjacent to the thrust bearing are integrated to form an integrated bearing, and the integrated bearing includes: A third bearing shell, wherein the third bearing shell is a hollow rotating body and is provided with a first accommodating cavity and a second accommodating cavity; A radial sub-bearing is arranged in the first accommodating cavity, the radial sub-bearing is passed through the rotating shaft, and a fifth gap is formed between the radial sub-bearing and the rotating shaft; And, a thrust sub-bearing is arranged in the second accommodating cavity, the thrust sub-bearing includes a third thrust plate, and a fifth stator and a sixth stator respectively arranged on both sides of the thrust plate, the thrust plate is fixedly connected to the rotating shaft, and the fifth stator and the sixth stator are both passed through the rotating shaft; among the fifth stator and the sixth stator, each stator has a sixth gap with the third thrust plate.

2. The mobile charging vehicle according to claim 1, characterized in that: The fuel storage tank, the gas turbine generator set and the charging device are all arranged in the carriage, and the carriage is provided with an air inlet hole, and the air inlet hole is used to provide air intake for the gas turbine generator set; The electric energy storage device is arranged on the chassis.

3. The mobile charging vehicle according to claim 1, characterized in that: The driving mechanism is a driving motor, and the electric energy storage device is electrically connected to the driving motor.

4. The mobile charging vehicle according to claim 1, characterized in that: The driving cab is a single cabin, and the width of the compartment is less than or equal to 1 meter.

5. The mobile charging vehicle according to claim 2, characterized in that: The exhaust gas discharge pipe extends from the top of the vehicle body and is arranged horizontally toward the rear, and a muffler is arranged at the outlet of the exhaust gas discharge pipe.

6. The mobile charging vehicle according to claim 2, characterized in that: The gas turbine generator set and the charging device are both arranged at the front part of the carriage, and the fuel storage tank is arranged at the rear part of the carriage.

7. The mobile charging vehicle according to claim 2, characterized in that: The charging device comprises a charging device body and at least one charging gun, wherein the at least one charging gun is connected to the charging device body, and the charging device body is provided with a voltage conversion circuit and a power adjustment circuit; The voltage conversion circuit is used to adjust the output voltage of the charging gun, and the power adjustment circuit is used to adjust the output current of the charging gun.

8. The mobile charging vehicle according to claim 7, characterized in that: The charging device body is also provided with a detection circuit, and the control system is electrically connected to the detection circuit and the power adjustment circuit respectively; When the charging port of the charging gun is connected to an external power-consuming device, the detection circuit is used to detect the current capacity of the battery of the power-consuming device; The control system is used to control the output current of the power adjustment circuit according to the detection result of the detection circuit.

9. The mobile charging vehicle according to claim 7, characterized in that: The charging device further comprises a charging operation display device, and the control system is electrically connected to the charging operation display device; The charging operation display device is used to display a charging user interface and charging information.

10. The mobile charging vehicle according to claim 9, characterized in that: The carriage comprises a charging device placement chamber and a chamber door for closing the charging device placement chamber, the charging device body is arranged in the charging device placement chamber, the chamber door is provided with a charging gun base for placing the charging gun, and the charging operation display device is arranged on the chamber door; The side wall of the carriage is provided with a rolling door or a window corresponding to the door.

11. The mobile charging vehicle according to claim 1, characterized in that: The mobile charging vehicle is also provided with a communication module, and the communication module is used to establish a communication connection with an external communication device.

12. The mobile charging vehicle according to claim 1, characterized in that: The electric energy storage device is also provided with an electric quantity detection mechanism, and the control system is electrically connected to the electric quantity detection mechanism; wherein, when the electric quantity detection mechanism detects that the electric quantity of the electric energy storage device is lower than or equal to a first predetermined value, the control system controls the gas turbine generator set to start; When the power detection mechanism detects that the power of the electric energy storage device is higher than or equal to a second predetermined value, the control system controls the gas turbine generator set to shut down.

13. The mobile charging vehicle according to claim 1, characterized in that: The fuel storage tank is also provided with a liquid level detector and / or a combustible gas concentration detector.

14. The mobile charging vehicle according to claim 1, characterized in that: The mobile charging vehicle also includes: A heat exchange medium circulation system, the heat exchange medium circulation system comprising a circulation pipe filled with a heat exchange medium, the heat exchange medium circulation system being used to exchange heat for the electrical control elements and / or the electric energy storage device in the mobile charging vehicle; A heating fan, the heating fan is used to heat the driver's cabin of the mobile charging vehicle; A refrigeration fan, the refrigeration fan is used to cool the driver's cabin of the mobile charging vehicle; A heating system, the heating system being connected to the heat exchange medium circulation system and the heating fan respectively; and a refrigeration system, wherein the refrigeration system is connected to the heat exchange medium circulation system and the refrigeration fan respectively.

15. The mobile charging vehicle according to claim 14, characterized in that: The heating system comprises a finned heat exchanger, wherein the fins of the finned heat exchanger are retractable; The finned heat exchanger is connected to the heat exchange medium circulation system and the heating fan respectively.

16. The mobile charging vehicle according to claim 14, characterized in that: The refrigeration system includes a refrigeration device and a cooler, and the refrigeration device includes a refrigerator and a lithium bromide unit; The refrigerator is electrically connected to the gas turbine generator set and / or the electric energy storage device, and the refrigerator is connected to the cooler and / or the refrigeration fan; The lithium bromide unit is used to absorb heat energy in the tail gas of the gas turbine generator set for refrigeration, and the lithium bromide unit is connected to the cooler; The cooler is connected to the heat exchange medium circulation system and / or the refrigeration fan.

17. The mobile charging vehicle according to claim 16, characterized in that: The thrust bearing is a gas-magnetic hybrid thrust bearing; The radial bearing is a gas-magnetic hybrid radial bearing or a gas-dynamic-static hybrid radial bearing.

18. The mobile charging vehicle according to claim 17, characterized in that: The gas-magnetic hybrid thrust bearing is a foil-type gas-magnetic hybrid thrust bearing or a slot-type gas-magnetic hybrid thrust bearing; The foil type gas-magnetic hybrid thrust bearing comprises: A first thrust plate, wherein the first thrust plate is fixedly connected to the rotating shaft; and, a first stator and a second stator passing through the rotating shaft, wherein the first stator and the second stator are respectively arranged on opposite sides of the first thrust plate; In the first stator and the second stator, each stator includes a first magnetic bearing and a first foil bearing, the first magnetic bearing is provided with a plurality of first magnetic components in a circumferential direction, and the first foil bearing is provided with a second magnetic component capable of generating a magnetic force with the plurality of first magnetic components; Wherein, the first foil bearing is arranged between the first magnetic bearing and the first thrust plate, and has a first gap between the first foil bearing and the first thrust plate, and the first foil bearing can move in the axial direction of the rotating shaft under the action of the magnetic force between the first magnetic component and the second magnetic component; The groove type gas-magnetic hybrid thrust bearing comprises: a second thrust plate, the second thrust plate being fixedly connected to the rotating shaft, and the second thrust plate being provided with a third magnetic component; and, a third stator and a fourth stator passing through the rotating shaft, wherein the third stator and the fourth stator are respectively arranged on opposite sides of the second thrust plate; In the third stator and the fourth stator, each stator includes a second magnetic bearing, a plurality of fourth magnetic components capable of generating magnetic force with the third magnetic component are circumferentially arranged on the second magnetic bearing, a second gap is provided between the second magnetic bearing and the second thrust plate, and the second thrust plate can move in the axial direction of the rotating shaft under the action of the magnetic force between the third magnetic component and the plurality of fourth magnetic components; Wherein, a second dynamic pressure generating groove is arranged on the end surface of the second thrust plate facing the third stator and the fourth stator, or on the end surfaces of the third stator and the fourth stator facing the second thrust plate.

19. The mobile charging vehicle according to claim 18, characterized in that: In the third stator and the fourth stator, each stator is also provided with a first static pressure air intake throttle hole, one end of the first static pressure air intake throttle hole is connected to the second gap, and the other end is connected to an external air source for conveying the external air source into the second gap.

20. The mobile charging vehicle according to claim 19, characterized in that: The gas-magnetic hybrid radial bearing is a foil-type gas-magnetic hybrid radial bearing or a slot-type gas-magnetic hybrid radial bearing; The foil-type gas-magnetic hybrid radial bearing comprises: A third magnetic bearing sleeved on the rotating shaft, wherein a plurality of fifth magnetic components are circumferentially arranged on the third magnetic bearing; a second foil bearing sleeved on the rotating shaft and located between the third magnetic bearing and the rotating shaft, wherein the second foil bearing is provided with a sixth magnetic component capable of generating magnetic force with the plurality of fifth magnetic components; There is a third gap between the second foil bearing and the rotating shaft, and the second foil bearing can move in the radial direction of the rotating shaft under the magnetic force of the plurality of fifth magnetic components and the sixth magnetic component; The groove type gas-magnetic hybrid radial bearing comprises: a fourth magnetic bearing sleeved on the rotating shaft, wherein a plurality of seventh magnetic components are circumferentially arranged on the fourth magnetic bearing; A third dynamic pressure generating groove is provided on the side wall of the fourth magnetic bearing facing the rotating shaft, or on the circumferential surface of the rotating shaft facing the fourth magnetic bearing; There is a fourth gap between the fourth magnetic bearing and the rotating shaft, and the rotating shaft can move in the radial direction of the rotating shaft under the magnetic force of the plurality of seventh magnetic components.

21. The mobile charging vehicle according to claim 20, characterized in that: The fourth magnetic bearing is also provided with a static pressure air intake throttle hole, one end of which is communicated with the fourth gap, and the other end of which is connected to an external air source for conveying the external air source into the fourth gap.

22. The mobile charging vehicle according to claim 21, characterized in that: The radial sub-bearing comprises a fifth magnetic bearing sleeved on the rotating shaft, the fifth gap is provided between the fifth magnetic bearing and the rotating shaft, and a plurality of eighth magnetic components are circumferentially arranged on the fifth magnetic bearing; the rotating shaft can move in the radial direction of the rotating shaft under the magnetic force of the plurality of eighth magnetic components; In the fifth stator and the sixth stator, each stator includes a sixth magnetic bearing, and a plurality of ninth magnetic components are circumferentially arranged on the sixth magnetic bearing; a tenth magnetic component is arranged on the third thrust plate, and the third thrust plate can move in the axial direction of the rotating shaft under the action of the magnetic force between the plurality of ninth magnetic components and the tenth magnetic component.

23. The mobile charging vehicle according to claim 22, characterized in that: The third bearing shell is also provided with a third static pressure air intake throttle hole; Among them, one end of the third static pressure air intake throttle hole is connected to an external air source, and the other end is connected to the fifth gap through the radial bearing, and / or is connected to the sixth gap through the fifth stator and the sixth stator, for transporting the external air source to the fifth gap and / or the sixth gap.

24. A mobile energy station, characterized in that: Comprising a mobile charging vehicle as claimed in any one of claims 1 to 23; The power transmission line of the gas turbine generator set of the mobile charging vehicle is connected to the power transmission network; or, the gas turbine generator set of the mobile charging vehicle provides electric energy by means of isolated grid power generation.

25. The mobile energy station according to claim 24, characterized in that: The mobile energy station also includes a waste heat boiler and a lithium bromide unit, and the exhaust pipe of the mobile charging vehicle is connected to the waste heat boiler and the lithium bromide unit respectively; wherein the waste heat boiler is used to absorb the heat energy in the exhaust gas of the gas turbine generator set of the mobile charging vehicle for heating; The lithium bromide unit is used to absorb the heat energy in the exhaust gas of the gas turbine generator set of the mobile charging vehicle to provide cooling.

26. The mobile energy station according to claim 25, characterized in that: The mobile energy station also includes a flue gas supplementary combustion type lithium bromide unit, and the tail gas emission pipe of the mobile charging vehicle is connected to the flue gas supplementary combustion type lithium bromide unit; The flue gas supplementary combustion type lithium bromide unit is used to absorb the heat energy in the tail gas of the gas turbine generator set of the mobile charging vehicle to provide heating or cooling.

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