Flywheel energy storage rotor vacuum heat dissipation system

Abstract

This invention discloses a flywheel energy storage rotor vacuum cooling system, comprising a housing, a hollow rotor, and a cooling mechanism. The hollow rotor is disposed within the housing. The cooling structure includes a vent pipe, an injection assembly, and an exhaust pipe. The vent pipe is coaxially arranged with the hollow rotor and extends from top to bottom into the inner cavity of the hollow rotor, with a rotatable sealing fit between the vent pipe and the hollow rotor. The vent pipe has an inlet and an outlet extending from top to bottom. The lower ends of both the inlet and outlet are located within the inner cavity of the hollow rotor, with the lower end of the inlet lower than the lower end of the outlet. The injection assembly injects air into the inlet, and the exhaust pipe is connected to the upper end of the outlet. By utilizing the vent pipe in conjunction with the injection assembly, the cooling gas achieves directional flow within the hollow rotor, solving the technical problems of limited radiative heat exchange temperature difference and low cooling efficiency in existing hollow rotor technologies.

Description

Technical Field

[0001] This invention belongs to the field of flywheel energy storage technology, and specifically relates to a flywheel energy storage rotor vacuum heat dissipation system. Background Technology

[0002] For high-power flywheel energy storage systems, the heat generated is large. When the flywheel is working, it is necessary to dissipate heat from the internal motor stator, motor rotor, flywheel rotor and bearings. In addition, the flywheel in the current technology generally has a high speed and the wind friction of the flywheel rotor is also very large. In order to reduce wind friction, the inside of the flywheel needs to be evacuated.

[0003] The motor stator is a stationary component and is close to the housing, so cooling the stator is relatively easy. Heat can be directly transferred to the external environment through cooling pipes, heat sinks, and other structures installed on the outside of the housing, or the heat can be removed by circulating cooling medium. The cooling effect can meet the working requirements of the stator.

[0004] The magnetic levitation flywheel energy storage rotor experiences displacement relative to the housing, preventing stable contact heat conduction with the housing and cooling structure. The heat generated by this type of flywheel rotor is primarily radiated outwards from its outer surface through the motor rotor, motor stator, and housing, or indirectly transferred to other cooling media for cooling. Therefore, its heat dissipation path is long, its thermal resistance is high, and the radiative heat transfer temperature difference is limited, resulting in limited improvement in heat transfer capacity. This leads to slow heat dissipation, low cooling efficiency, and an inability to fully meet the heat dissipation and cooling requirements of the flywheel energy storage rotor.

[0005] Therefore, how to overcome the limitations of existing contact heat dissipation technology, improve the heat dissipation efficiency of the flywheel rotor, reduce motor losses, and avoid affecting the operation of the magnetic levitation flywheel energy storage device due to insufficient heat dissipation is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a flywheel energy storage rotor vacuum cooling system to address the shortcomings of the prior art. The system utilizes a vent pipe in conjunction with an injection component to achieve directional flow of cooling gas inside the hollow rotor, thereby solving the technical problems of low heat dissipation efficiency, high motor losses, and insufficient heat dissipation affecting the stable operation of the flywheel energy storage device in the prior art, which uses radiation heat exchange.

[0007] The present invention adopts the following technical solution: a flywheel energy storage rotor vacuum heat dissipation system, comprising a shell, a hollow rotor and a heat dissipation mechanism; The hollow rotor is disposed inside the housing. The heat dissipation structure includes a vent pipe, an air injection component, and an exhaust pipe. The vent pipe is arranged coaxially with the hollow rotor and passes through the inner cavity of the hollow rotor from top to bottom. The vent pipe and the hollow rotor are rotatably sealed together. The vent pipe is provided with an air inlet and an air outlet extending from top to bottom. The lower ends of the air inlet and the lower ends of the air outlet are both arranged in the inner cavity of the hollow rotor, and the lower end of the air inlet is lower than the lower end of the air outlet. The air injection assembly is used to inject air into the air inlet, and the exhaust pipe is connected to the upper end of the air outlet.

[0008] Preferably, the vent pipe is formed by connecting a first semi-circular pipe and a second semi-circular pipe, with the air inlet located on the first semi-circular pipe and the air outlet located on the second semi-circular pipe.

[0009] Preferably, the length of the second semicircular tube is shorter than the length of the first semicircular tube, the lower end of the first semicircular tube is located near the bottom of the inner cavity of the hollow rotor, and the lower end of the second semicircular tube is located near the top of the inner cavity of the hollow rotor.

[0010] Preferably, a one-way valve is provided at the lower end of the first semi-circular tube.

[0011] Preferably, the upper end of the inner cavity of the housing is provided with a downwardly extending mounting sleeve corresponding to the position of the hollow rotor. The inner hole of the mounting sleeve is adapted to the size of the upper end of the hollow rotor, and the upper end of the hollow rotor is rotatably sealed with the inner hole of the mounting sleeve.

[0012] Preferably, the air injection assembly includes an air pump and a connecting pipe. The air pump is arranged at the upper end of the housing, and the air outlet of the air pump is connected to the air inlet through the connecting pipe.

[0013] Preferably, the air injection assembly further includes a housing, the air pump, connecting pipe and exhaust pipe are disposed inside the housing, the side of the housing is provided with an air inlet hole, and a filter plate is disposed on the air inlet hole.

[0014] Preferably, the chassis is provided with a cleaning assembly for cleaning the filter plate.

[0015] Preferably, the cleaning assembly includes a mounting bracket, a servo motor, a cleaning rod, and brush bristles; The servo motor is mounted on the chassis at the position corresponding to the filter plate via a mounting bracket. The cleaning rod is arranged at the outer end of the servo motor's shaft, and the brush bristles are arranged on the side of the cleaning rod facing the filter plate.

[0016] Preferably, the servo motor is mounted on the inside of the chassis at a position corresponding to the filter plate via a mounting bracket, the shaft of the servo motor extends outward through the filter plate, and the cleaning rod is arranged on the outside of the filter plate.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: By setting up a vent pipe coaxially with the hollow rotor, and in conjunction with the air injection component and the exhaust pipe, an airflow circulation channel is formed in the hollow rotor cavity from top to bottom and then from bottom to top. The lower end of the air inlet is lower than the lower end of the air outlet to ensure that the airflow can fully flow through the entire cavity of the hollow rotor, directly performing forced convection heat transfer inside the hollow rotor, breaking through the temperature difference limitation of radiation heat transfer, greatly improving heat transfer capacity and cooling efficiency, and meeting the vacuum heat dissipation requirements of high-speed, high-heat flywheel rotors. At the same time, the vent pipe is sealed to the rotation of the hollow rotor, so as not to affect the normal operation of the hollow rotor and the maintenance of the vacuum environment inside the shell.

[0018] Furthermore, the vent pipe is composed of a first semi-circular tube and a second semi-circular tube, which is convenient for processing and manufacturing, and can form independent air inlets and outlets respectively.

[0019] Furthermore, by making the second semicircular tube shorter than the first semicircular tube, and by arranging the air inlet to extend deep into the bottom of the hollow rotor cavity and the air outlet near the top of the cavity, the cooling airflow is forced to flow upward from the bottom of the hollow rotor cavity. This allows the airflow to fully pass through the entire hollow rotor cavity space, eliminating heat dissipation dead zones, maximizing the use of airflow to remove heat from the hollow rotor, and improving heat dissipation uniformity and cooling effect.

[0020] Furthermore, by installing a one-way valve at the bottom of the air inlet, the backflow of cooling gas is prevented, ensuring a stable one-way gas circulation, thus ensuring a continuous and reliable cooling process and improving the system's operational stability.

[0021] Furthermore, by setting an installation sleeve that fits the upper end of the hollow rotor in the inner cavity of the housing, a rotational sealing fit is achieved at the upper end of the hollow rotor, which improves the sealing reliability between the hollow rotor and the housing, better maintains the vacuum environment inside the flywheel, reduces vacuum leakage, and at the same time forms a positioning support for the upper end of the hollow rotor, improving the operating stability of the hollow rotor and reducing the radial runout when the hollow rotor rotates at a high speed.

[0022] Furthermore, the air pump, connecting pipes, and exhaust pipe are integrated and protected by the chassis to prevent external impurities from entering and affecting the smooth flow of air. The filter plate at the air inlet can filter dust and impurities in the air entering the air pump, preventing impurities from entering the hollow rotor cavity with the cooling airflow and causing wear or blockage, ensuring the clean operation of the heat dissipation system and extending the service life of the equipment.

[0023] Furthermore, the addition of a cleaning component can automatically clean the impurities attached to the filter plate, eliminating the need for frequent manual disassembly and cleaning. This prevents the filter plate from accumulating impurities over a long period of use, thus increasing the air intake resistance, ensuring a stable air intake for the air pump, and maintaining a sufficient supply of cooling airflow.

[0024] Furthermore, by placing the servo motor inside the chassis and the cleaning rod and brush bristles outside the filter plate, the motor is protected from external environmental influences, while the outer surface of the filter plate can be cleaned directly and efficiently.

[0025] In summary, this invention employs a ventilation pipe structure composed of a first semi-circular tube and a second semi-circular tube, and in conjunction with an air injection component, enables directional flow of cooling gas inside the hollow rotor. At the same time, a scavenging component ensures that the air injection component can continuously and efficiently provide cooling medium, thereby achieving direct internal heat dissipation of the magnetic levitation flywheel energy storage rotor and significantly improving heat dissipation efficiency.

[0026] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the following description of the relative embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a front sectional view of a flywheel energy storage rotor vacuum cooling system according to the present invention; Figure 2 This is a front sectional view of the heat dissipation mechanism of the present invention; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a cross-sectional view of the vent pipe of the present invention; Figure 5 This is a schematic diagram of the overall structure of the chassis of the present invention; Figure 6 This is a schematic diagram of the L-shaped rod of the present invention.

[0029] The components are as follows: 10. Housing; 11. Hollow rotor; 20. Mounting sleeve; 30. First semi-circular tube; 31. Second semi-circular tube; 32. Air inlet; 33. One-way valve; 34. Air outlet; 35. Vent pipe; 40. Air pump; 41. Air inlet pipe; 42. Connecting pipe; 43. Exhaust pipe; 50. Chassis; 60. Filter plate; 70. L-shaped rod; 71. Housing; 72. Servo motor; 73. Shaft; 74. Square rod; 75. Brush bristles. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "one side," "one end," and "one side," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0034] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0035] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0036] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0037] This invention provides a vacuum cooling system for a flywheel energy storage rotor. By employing a ventilation pipe 35 structure composed of a first semi-circular pipe 30 and a second semi-circular pipe 31, and in conjunction with an air injection component, the cooling gas is directionally flowed inside the hollow rotor 11. At the same time, a scavenging component is used to ensure that the air injection component can continuously and efficiently provide a cooling medium, thereby achieving direct internal cooling of the magnetic levitation flywheel energy storage rotor and significantly improving the cooling efficiency.

[0038] Please see Figures 1 to 6 The present invention provides a flywheel energy storage rotor vacuum heat dissipation system, comprising a housing 10, a hollow rotor 11, and a heat dissipation mechanism.

[0039] The housing 10 serves as the mounting carrier for the entire system, providing an enclosed mounting space for the internal components. Specifically, for example... Figure 1 As shown, the hollow rotor 11 is located at the upper part of the inner cavity of the housing 10. A motor rotor is sleeved on the outside of the hollow rotor 11 inside the housing 10, and a motor stator is sleeved on the outside of the motor rotor. The motor stator is fixed to the housing 10. The motor stator cooperates with the electronic rotor to achieve electromagnetic induction drive, thereby rotating the hollow rotor 11. A flywheel rotor is located below the hollow rotor 11. The flywheel rotor is used to store kinetic energy, realizing energy conversion and storage. The specific connection and arrangement of the electronic rotor, motor rotor, hollow rotor 11, and flywheel rotor, as well as the working energy storage principle, are common knowledge well known to those skilled in the art and will not be elaborated upon here.

[0040] The hollow rotor 11 is one of the core components that generate heat, and its hollow internal structure provides a channel for the flow of heat dissipation medium.

[0041] Specifically, such as Figure 1 , 2As shown, the heat dissipation structure includes a vent pipe 35, an air injection assembly, and an exhaust pipe 43. The vent pipe 35 is coaxially arranged with the hollow rotor 11 and passes through the inner cavity of the hollow rotor 11 from top to bottom. The vent pipe 35 and the hollow rotor 11 are rotatably sealed together.

[0042] Specifically, a dynamic sealing structure can be used to achieve a rotational sealing fit between the vent pipe 35 and the hollow rotor 11. This can be achieved using a rotational sealing ring. The structure, sealing principle, and model selection of the rotational sealing ring are common knowledge to those skilled in the art and will not be elaborated upon here. In other embodiments, other dynamic sealing structures can also be used to achieve the rotational sealing fit. There are many specific implementation methods, which are common knowledge to those skilled in the art and will not be elaborated upon here.

[0043] In this embodiment, as Figure 1 , 2 As shown, the vent pipe 35 is provided with an air inlet 32 ​​and an air outlet 34 extending from top to bottom. The lower ends of both the air inlet 32 ​​and the air outlet 34 are located within the inner cavity of the hollow rotor 11, and the lower end of the air inlet 32 ​​is located at the lower end of the air outlet 34. An air injection assembly is used to inject air into the air inlet 32, and an exhaust pipe 43 is connected to the upper end of the air outlet 34 for exhausting air outwards.

[0044] With the above configuration, by setting up a vent pipe 35 coaxially arranged with the hollow rotor 11, and cooperating with the air injection component and the exhaust pipe 43, an airflow circulation channel is formed in the inner cavity of the hollow rotor 11 from top to bottom and then from bottom to top. The lower end of the air inlet 32 ​​is lower than the lower end of the air outlet 34, which can ensure that the airflow fully flows through the entire inner cavity of the hollow rotor, directly performing forced convection heat transfer inside the hollow rotor, breaking through the temperature difference limitation of radiation heat transfer, greatly improving the heat transfer capacity and cooling efficiency, and meeting the vacuum heat dissipation requirements of high-speed, high-heat flywheel rotors. At the same time, the vent pipe 35 and the hollow rotor 11 are rotated and sealed together, which does not affect the normal operation of the hollow rotor and the maintenance of the vacuum environment inside the shell 10.

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0046] In this embodiment, please refer to Figure 1 , 3 In a flywheel energy storage rotor vacuum cooling system of the present invention, the vent pipe 35 is formed by connecting a first semi-circular pipe 30 and a second semi-circular pipe 31. The air inlet 32 ​​is provided on the first semi-circular pipe 30, and the air outlet 34 is provided on the second semi-circular pipe 31. This arrangement facilitates both processing and manufacturing, and also facilitates the formation of independent air inlets 32 and air outlets 34.

[0047] To achieve reliable assembly of the vent pipe 35, which is formed by the connection of two semi-circular tubes, and the hollow rotor 11, a sleeve can be fitted around the outer periphery of the first semi-circular tube 30 and the second semi-circular tube 31 according to actual usage requirements. This completes the fixation of the two semi-circular tubes. The outer periphery of the sleeve rotates and seals with the hollow rotor 11 to complete the assembly.

[0048] Preferably, in this embodiment, the length of the second semi-circular tube 31 is shorter than the length of the first semi-circular tube 30. The lower end of the first semi-circular tube 30 is located near the bottom of the inner cavity of the hollow rotor 11, and the lower end of the second semi-circular tube 31 is located near the top of the inner cavity of the hollow rotor 11. This forces the cooling airflow to flow upward from the bottom of the rotor cavity, fully passing through the entire inner cavity space of the hollow rotor, eliminating heat dissipation dead zones, maximizing the use of airflow to remove heat from the inside of the hollow rotor, and improving heat dissipation uniformity and cooling effect.

[0049] In other embodiments, depending on actual usage requirements, the vent pipe 35 can also be a single pipe. In this case, an air inlet 32 ​​and an air outlet 34 are respectively provided on the vent pipe 35. At the same time, depending on actual requirements, an inlet of the air outlet 34 is provided at the top of the inner cavity of the vent pipe 35 near the hollow rotor 11. This allows the cooling gas to flow fully through the entire inner cavity of the hollow rotor 11, fully contact the inner wall of the hollow rotor 11, absorb heat to the maximum extent, and then be discharged from the air outlet 34 at the top, thereby improving heat dissipation efficiency.

[0050] Preferably, in this embodiment, such as Figure 1 , 2 As shown, a one-way valve 33 is provided at the lower end of the first semi-circular tube 30. The one-way valve 33 is directed from the air inlet 32 ​​to the inner cavity of the hollow rotor 11, which can effectively prevent the air that may have pressure fluctuations after absorbing heat in the hollow rotor 11 from flowing back into the air inlet 32, ensuring the one-way and stability of the gas flow, and ensuring the continuous and reliable heat dissipation process.

[0051] Preferably, in this embodiment, such as Figure 1 As shown, a downwardly extending mounting sleeve 20 is provided at the upper end of the inner cavity of the housing 10, corresponding to the position of the hollow rotor 11. The inner hole of the mounting sleeve 20 is adapted to the size of the upper end of the hollow rotor 11, and the upper end of the hollow rotor 11 is rotatably sealed with the inner hole of the mounting sleeve 20.

[0052] Specifically, a dynamic sealing structure can be used to achieve a rotational sealing fit between the mounting sleeve 20 and the hollow rotor 11. This can be achieved using a rotational sealing ring. The structure, sealing principle, and model selection of the rotational sealing ring are common knowledge to those skilled in the art and will not be elaborated upon here. In other embodiments, other dynamic sealing structures can also be used to achieve the rotational sealing fit. There are many specific implementation methods, which are common knowledge to those skilled in the art and will not be elaborated upon here.

[0053] By providing an mounting sleeve 20 that fits the upper end of the hollow rotor 11 within the inner cavity of the housing 10, a rotational sealing fit is achieved at the upper end of the hollow rotor 11. This improves the sealing reliability between the hollow rotor 11 and the housing 10, better maintains the vacuum environment inside the flywheel, prevents disruption of the vacuum environment within the housing 10, and avoids leakage of heat dissipation gas. Simultaneously, the mounting sleeve 20 provides positioning support for the upper end of the hollow rotor 11, playing an auxiliary positioning role, improving the operational stability of the hollow rotor 11, and reducing radial runout during high-speed rotation.

[0054] Preferably, in this embodiment, such as Figure 1 , 2 As shown, the air injection assembly includes an air pump 40 and a connecting pipe 42. The air pump 40 is arranged at the upper end of the housing 10, and an air inlet pipe 41 is fixedly installed at the air inlet end of the air pump 40 for drawing air from the outside.

[0055] Connecting pipe 42 is connected to the air outlet of air pump 40. The upper end of vent pipe 35 extends upward out of housing 10. The air outlet of air pump 40 and the vent hole of vent pipe 35 are connected through connecting pipe 42 to deliver gas to the interior of hollow rotor 11.

[0056] An exhaust pipe 43 is installed at the upper end of the vent 34 to discharge the heat-absorbing gas, and a valve is provided on the exhaust pipe 43 to control the opening and closing of the exhaust passage.

[0057] Specifically, in this embodiment, the air injection assembly also includes a housing 50, inside which the air pump 40, connecting pipe 42, and exhaust pipe 43 are disposed. The housing 50 integrates and protects the air pump 40, connecting pipe 42, and exhaust pipe 43, preventing external impurities from intruding and affecting the smooth flow of air. The outlet end of the exhaust pipe 43 extends to the side wall of the housing 50 and is exposed, allowing the discharged gas to be discharged to the outside of the housing 50.

[0058] In this embodiment, as Figure 1 , 2As shown in Figures 3 and 5, an air inlet is provided on one side of the chassis 50, and a filter plate 60 is provided on the air inlet. Specifically, the filter plate 60 is made of porous filter material, which can filter the air entering the chassis 50, remove dust, impurities and other impurities in the air, and prevent impurities from entering the air pump 40 and the hollow rotor 11 and causing wear or blockage of the components.

[0059] Preferably, in this embodiment, the chassis 50 is further provided with a cleaning component for cleaning the filter plate 60. This component can automatically clean impurities adhering to the filter plate 60, eliminating the need for frequent manual disassembly and cleaning. This prevents increased air intake resistance due to impurity accumulation after long-term use of the filter plate 60, ensuring stable air intake for the air pump 40 and maintaining sufficient cooling airflow supply.

[0060] Specifically, the cleaning components include a mounting bracket, a servo motor 72, a cleaning rod, and brush bristles 75. The servo motor 72 is mounted on the housing 50 at the position corresponding to the filter plate 60 via the mounting bracket. The cleaning rod is arranged at the outer end of the shaft 73 of the servo motor 72, and the brush bristles 75 are arranged on the side of the cleaning rod facing the filter plate 60.

[0061] like Figure 5 As shown, the mounting bracket includes two sets of L-shaped rods 70 arranged vertically and symmetrically along the filter plate 60. The servo motor 72 is fixedly installed between the two sets of L-shaped rods 70. The servo motor 72 is arranged inside the chassis 50 corresponding to the filter plate 60 through the L-shaped rods 70, and while ensuring stable installation, it reduces the occupied area and improves the air circulation effect.

[0062] The shaft 73 of the servo motor 72 passes through the filter plate 60 and extends outward from the housing 50. The shaft 73 and the filter plate 60 are rotatably mounted by bearings, specifically using the bearing structure in patent CN217736027U.

[0063] A cleaning rod is fixedly installed at the outer end of the rotating shaft 73, and then the cleaning rod is arranged on the outer side of the filter plate 60. The servo motor 72 is located inside the housing 50, and the cleaning rod and brush 75 are placed on the outer side of the filter plate 60. This not only protects the motor from the influence of the external environment, but also allows for direct cleaning of the outer surface of the filter plate 60, resulting in a direct and efficient cleaning effect.

[0064] The cleaning rod extends radially along the rotating shaft 73, and its rotation range is adapted to the size of the filter plate 60. Several bristles 75 are arranged on the side of the cleaning rod facing the filter plate 60. The bristles 75 can be made of an elastic, wear-resistant material, such as nylon or polyester. When the rotating shaft 73 drives the cleaning rod to rotate, the bristles 75 wipe the surface of the filter plate 60, removing attached impurities.

[0065] Preferably, in this embodiment, the system further includes a controller and a power supply module, wherein the controller is fixed inside the chassis 50 and can be a PLC controller. The valve on the exhaust pipe 43 can be a solenoid valve.

[0066] The controller is electrically connected to the air pump 40, servo motor 72, and valve on exhaust pipe 43 via wires. The controller can be preset with control logic to automatically control the start and stop of air pump 40 and servo motor 72, and the opening and closing of valve on exhaust pipe 43, based on the operating status of the flywheel energy storage system. If a temperature sensor is installed and electrically connected to the controller, the temperature of the hollow rotor 11 can be detected by the temperature sensor to achieve the aforementioned automatic control logic.

[0067] Preferably, in this embodiment, the air injection assembly may further include a pressure sensor for detecting the air intake pressure of the air pump 40. The pressure sensor is electrically connected to the controller. The pressure sensor is used to determine the air intake pressure of the air pump 40, thereby determining the degree of clogging of the filter screen and whether it needs to be cleaned.

[0068] An external control terminal is also provided, which allows manual control of the air pump 40, servo motor 72, and exhaust pipe 43 valve by sending control commands through the external control terminal.

[0069] The power supply module is a DC lithium battery pack, which is fixedly installed inside the chassis 50. It supplies power to the controller, air pump 40 and servo motor 72 through wires. The power supply module is also equipped with a charging interface, which can be charged by connecting to the mains power through an external power cord, or it can be directly powered by the mains power to power the power supply module and simultaneously power the system components.

[0070] The process of using the flywheel energy storage rotor vacuum heat dissipation system of the present invention is as follows: In actual use, the staff first evacuates the inside of the housing 10 to a vacuum state to ensure low wind friction during the operation of the flywheel rotor.

[0071] When the system is running, the hollow rotor 11 generates heat and reaches the controller's preset temperature threshold. At this point, the controller starts the air pump 40 and simultaneously opens the valve on the exhaust pipe 43. The air pump 40 draws air through the air inlet pipe 41. The air is first filtered by the filter plate 60 to remove impurities before entering the air pump 40.

[0072] Air pump 40 delivers filtered air through connecting pipe 42 to the air inlet 32 ​​of the first semi-circular pipe 30. Under the pressure of air pump 40, the air pushes open the one-way valve 33 and enters the bottom of the inner cavity of the hollow rotor 11. It then flows upward along the inner cavity of the hollow rotor 11, fully absorbing the heat generated by the hollow rotor 11 in the process. The heat-absorbing air enters the air outlet 34 of the second semi-circular pipe 31 and is then discharged to the outside of the chassis 50 through exhaust pipe 43, completing one heat dissipation cycle.

[0073] After the filter plate 60 has been used for a period of time, the controller can detect the air intake pressure of the air intake pipe 41 according to a preset time interval or through a pressure sensor. When the pressure reaches a preset value, indicating that the filter plate 60 is clogged, the controller controls the air pump 40 to stop working and starts the servo motor 72. The servo motor 72 drives the rotating shaft 73 to rotate, and the rotating shaft 73 drives the cleaning rod and brush 75 to rotate. The brush 75 wipes and cleans the surface of the filter plate 60. After cleaning is completed, the servo motor 72 stops working, the controller restarts the air pump 40, and the system resumes heat dissipation operation.

[0074] In summary, the present invention provides a vacuum cooling system for a flywheel energy storage rotor. By employing a ventilation pipe 35 structure composed of a first semi-circular pipe 30 and a second semi-circular pipe 31, and in conjunction with an injection component, the system enables directional flow of cooling gas within the hollow rotor 11. Simultaneously, a scavenging component ensures that the injection component can continuously and efficiently provide cooling medium, thereby achieving direct internal cooling of the magnetic levitation flywheel energy storage rotor and significantly improving heat dissipation efficiency.

[0075] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A flywheel energy storage rotor vacuum cooling system, characterized in that, It includes a housing (10), a hollow rotor (11), and a heat dissipation mechanism; The hollow rotor (11) is disposed inside the housing (10). The heat dissipation structure includes a vent pipe (35), an air injection component and an exhaust pipe (43). The vent pipe (35) is coaxially arranged with the hollow rotor (11) and passes through the inner cavity of the hollow rotor (11) from top to bottom. The vent pipe (35) and the hollow rotor (11) are in a rotational sealing fit. The vent pipe (35) is provided with an air inlet (32) and an air outlet (34) extending from top to bottom. The lower ends of the air inlet (32) and the lower ends of the air outlet (34) are both arranged in the inner cavity of the hollow rotor (11), and the lower end of the air inlet (32) is lower than the lower end of the air outlet (34). The air injection assembly is used to inject air into the air inlet (32), and the exhaust pipe (43) is connected to the upper end of the air outlet (34).

2. The flywheel energy storage rotor vacuum cooling system according to claim 1, characterized in that, The ventilation pipe (35) is formed by connecting a first semi-circular pipe (30) and a second semi-circular pipe (31). The air inlet (32) is located on the first semi-circular pipe (30), and the air outlet (34) is located on the second semi-circular pipe (31).

3. The flywheel energy storage rotor vacuum cooling system according to claim 2, characterized in that, The length of the second semi-circular tube (31) is shorter than the length of the first semi-circular tube (30). The lower end of the first semi-circular tube (30) is located near the bottom of the inner cavity of the hollow rotor (11), and the lower end of the second semi-circular tube (31) is located near the top of the inner cavity of the hollow rotor (11).

4. The flywheel energy storage rotor vacuum cooling system according to claim 3, characterized in that, A one-way valve (33) is provided at the lower end of the first semi-circular tube (30).

5. The flywheel energy storage rotor vacuum cooling system according to claim 1, characterized in that, The upper end of the inner cavity of the housing (10) is provided with a downwardly extending mounting sleeve (20) corresponding to the position of the hollow rotor (11). The inner hole of the mounting sleeve (20) is adapted to the upper end size of the hollow rotor (11), and the upper end of the hollow rotor (11) is rotatably sealed with the inner hole of the mounting sleeve (20).

6. The flywheel energy storage rotor vacuum cooling system according to claim 1, characterized in that, The air injection assembly includes an air pump (40) and a connecting pipe (42). The air pump (40) is arranged at the upper end of the housing (10), and the air outlet of the air pump (40) is connected to the air inlet (32) through the connecting pipe (42).

7. The flywheel energy storage rotor vacuum cooling system according to claim 6, characterized in that, The air injection assembly also includes a housing (50), the air pump (40), the connecting pipe (42) and the exhaust pipe (43) are disposed inside the housing (50), the side of the housing (50) is provided with an air inlet hole, and a filter plate (60) is disposed on the air inlet hole.

8. The flywheel energy storage rotor vacuum cooling system according to claim 7, characterized in that, The chassis (50) is provided with a cleaning assembly for cleaning the filter plate (60).

9. The flywheel energy storage rotor vacuum cooling system according to claim 8, characterized in that, The cleaning assembly includes a mounting bracket, a servo motor (72), a cleaning rod, and bristles (75). The servo motor (72) is mounted on the chassis (50) at the position corresponding to the filter plate (60) via a mounting bracket. The cleaning rod is arranged at the outer end of the shaft (73) of the servo motor (72), and the brush bristles (75) are arranged on the side of the cleaning rod facing the filter plate (60).

10. The flywheel energy storage rotor vacuum cooling system according to claim 9, characterized in that, The servo motor (72) is mounted on the inside of the chassis (50) at a position corresponding to the filter plate (60) via a mounting bracket. The shaft (73) of the servo motor (72) extends outward through the filter plate (60), and the cleaning rod is arranged on the outside of the filter plate (60).

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