Cooling system for cooling linear motor and electromagnet of magnetic levitation vehicle

Abstract

The utility model discloses a cooling system for cooling a linear motor and an electromagnet of a magnetic levitation vehicle, and relates to the technical field of magnetic levitation traffic. The cooling system comprises a water cooling unit and a water cooling pipeline assembly. The water cooling unit is installed on the lower portion of a vehicle body. The water cooling pipeline assembly comprises a main pipeline and a branch pipeline, the main pipeline is arranged along the bottom of the vehicle body, and the branch pipeline is arranged along the walking part; the main pipeline is connected with the water cooling unit in a fluid communication mode, the linear motor and the electromagnet are connected with cooling plates respectively, and the branch pipeline is connected with the cooling plates in a fluid communication mode to form water cooling circulation. According to the technical scheme, the technical problem that an existing linear motor water cooling system is low in heat dissipation efficiency can be effectively solved, unified and centralized heat dissipation can be conducted on an electromagnet and a linear motor of a magnetic levitation vehicle, and the overall heat dissipation efficiency of a linear motor system is greatly improved through a centralized heat dissipation system; the integral weight reduction effect of the linear motor system is obvious, and the urgent requirements of light weight and miniaturization can be effectively met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnetic levitation transportation, in particular to a cooling system for cooling linear motor and electromagnet of magnetic levitation vehicle. BACKGROUND

[0002] With the development of magnetic levitation transportation, the passenger capacity of the magnetic levitation vehicle is more and more, and the speed is higher and higher, which leads to the increasing power of the vehicle-mounted linear motor, and the heat dissipation requirement of the system is also increasing. The traditional forced air cooling and heat pipe running air cooling heat dissipation mode is more and more difficult to meet the heat dissipation requirement of the vehicle. As an effective way for heat dissipation of high-power linear motor, water cooling has the advantages of large heat dissipation power, good effect, compact structure and the like. Compared with forced air cooling, the noise level is greatly reduced, and compared with heat pipe running air cooling, the heat dissipation power is increased, and the weight and volume of the system are reduced. In addition, under the same power, compared with the traditional self-ventilated three-phase motor, the linear motor using the water cooling heat dissipation mode greatly reduces the noise during the operation of the vehicle, and also greatly reduces the weight and volume of the linear motor.

[0003] At present, the application of water cooling heat dissipation system is mostly to integrate the water cooling system in the converter box to water cool and dissipate heat for the traction converter. However, the existing magnetic levitation vehicle involves the overall design of the vehicle body, the running part and the traction converter. The heat dissipation effect of the existing water cooling heat dissipation system is not obvious, the overall weight of the linear motor is large, and the heat dissipation efficiency is low. In view of the above technical problems, a centralized heat dissipation system is researched and designed, which can effectively meet the urgent needs of lightweight and miniaturization in the design of linear motor system, and plays an important role in promoting the development of linear motor system. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of cooling system for cooling linear motor and electromagnet of magnetic levitation vehicle, which can effectively meet the urgent needs of lightweight and miniaturization in the design of linear motor system and electromagnet, and the heat dissipation effect is obviously improved.

[0005] The solution adopted by the utility model to solve the technical problem is as follows:

[0006] A kind of cooling system for cooling linear motor and electromagnet of magnetic levitation vehicle, the linear motor and electromagnet are installed on the running part of the magnetic levitation vehicle, and the cooling system is independently installed in the suspension frame of the lower part of the vehicle body and the running part of the magnetic levitation vehicle, wherein the cooling system comprises:

[0007] A water cooling unit is used to provide circulating cooling water.

[0008] A water cooling pipe assembly, the water cooling pipe assembly comprises a main pipe and a branch pipe,

[0009] The main pipe is connected in fluid communication with the water cooling unit, the linear motor and the electromagnet are respectively connected with a cooling plate, the branch pipe is connected in fluid communication with the cooling plate to form a water cooling circulation, the water cooling unit is installed at the lower part of the vehicle body, the main pipe is arranged along the bottom of the vehicle body, the branch pipe is arranged along the running part, and each water cooling linear motor and two suspension electromagnets correspond to a cooling plate, and the corresponding water cooling linear motor and electromagnet can be simultaneously cooled through the cooling plate.

[0010] The technical scheme aims at the technical problem of low heat dissipation efficiency of the existing linear motor water cooling system, adopts the same set of water cooling system to uniformly and centrally cool the electromagnets and the linear motor of the magnetic levitation vehicle, the centralized cooling system greatly improves the overall heat dissipation efficiency of the linear motor system, has obvious effect on the overall weight reduction of the linear motor system, can effectively meet the urgent needs of lightweight and small-sized design in the design of the linear motor system and the electromagnets, obviously improves the heat dissipation effect, and has good application prospect for promoting the development of the linear motor system.

[0011] In some possible implementation manners, the water cooling unit comprises:

[0012] A heat exchanger is installed at the bottom of the vehicle body.

[0013] The heat exchanger is provided with a water inlet and a water outlet, and the water inlet and the water outlet are arranged in fluid communication with the main pipe.

[0014] In some possible implementation manners, the water cooling unit further comprises a cooling fan and a circulating water pump for cooling the cooling liquid in the heat exchanger, and the cooling fan and the circulating water pump are installed on the heat exchanger; specifically, the cooling fan is installed on the heat exchanger air duct and connected through riveting, the wind generated by the cooling fan reaches the cooling liquid in the heat exchanger through the special air duct, an infinitely variable speed centrifugal fan is adopted, and the wind is discharged in a surrounding manner from the end part of the fan; the circulating water pump is connected on the heat exchanger air duct through riveting to provide circulating power for the cooling water.

[0015] In some possible implementation manners, the heat exchanger water inlet and the heat exchanger water outlet are each provided with a quick connector.

[0016] In some possible implementation manners, the water cooling unit further comprises an expansion tank, the expansion tank is installed in the vehicle body, and the expansion tank is arranged in fluid communication with the heat exchanger through a pipeline to balance the pressure of the heat exchanger.

[0017] In some possible implementation manners, a pressure relief valve for maintaining pressure balance of the expansion tank is installed at the top of the expansion tank.

[0018] In some possible implementation manners, the expansion water tank is provided with a liquid level meter for monitoring the height of the cooling liquid in the expansion water tank.

[0019] In some possible implementation manners, the circulating water pump is configured with a water cooling base plate assembly, and the water cooling unit is arranged in fluid communication with the cooling plate and the water cooling base plate assembly through the water cooling pipeline assembly to form a water cooling circulation.

[0020] In some possible implementation manners, the water cooling pipeline assembly is provided with a pressure sensor and a temperature sensor on the corresponding pipeline for monitoring the temperature and pressure of the cooling liquid in the cooling system, which helps to find and eliminate system failures in time, such as whether there is pipe blockage, liquid leakage, insufficient system heat dissipation caused by gas in the pipeline, etc.

[0021] In some possible implementation manners, the running part includes left and right running parts arranged in parallel, and a plurality of water-cooled linear motors and a plurality of suspension electromagnets are respectively arranged on the left and right running parts, and the branch pipelines arranged on the left and right sides of the running part are arranged in parallel.

[0022] In some possible implementation manners, the water-cooled linear motors and electromagnets on the running part are connected to the cooling plate through a heat-conducting material, the heat-conducting material is a lead-in paste, the cooling plate is tightly attached to the bottom of the water-cooled linear motor and the side wall of the electromagnet, and the lead-in paste is used for heat transfer.

[0023] In some possible implementation manners, the cooling plate is made of aluminum alloy, which meets the high heat dissipation efficiency and meets the urgent needs of lightweight and miniaturization in the linear motor system design.

[0024] Compared with the prior art, the utility model has the advantages of:

[0025] The cooling system can effectively meet the cooling of the linear motor system and the electromagnet of the embedded maglev vehicle, and the centralized heat dissipation system can greatly improve the overall heat dissipation efficiency of the linear motor system and has obvious effect on the overall weight reduction of the linear motor system, and has good application prospect for promoting the development of the linear motor system.

[0026] The water cooling pipeline assembly in the cooling system is designed in a branch manner, and the branch pipeline corresponds to the cooling plate made of aluminum alloy to form a water cooling circulation, and the structure design can effectively meet the urgent needs of lightweight and miniaturization design in the linear motor system and the electromagnet of the embedded maglev vehicle.

[0027] The cooling system arrangement structure adopts an independent centralized heat dissipation system, can better dissipate heat for the linear motor and electromagnet, meanwhile, the cooling fan in the water cooling unit adopts a redundant design, when one of the fans has a problem, the other fan is automatically started to work, so that the operation of the system is more safe and reliable.

[0028] The cooling system of the utility model adopts automatic control, the pressure sensor and temperature sensor configured on the corresponding pipeline of the water cooling pipeline assembly are used for monitoring the temperature and pressure of the cooling liquid in the system, which helps to find and eliminate system failure in time, the size of the air volume of the cooling fan in the water cooling unit adopts stepless speed regulation, changes according to the size of the power of the motor, meanwhile, the flow and pressure of the water pump are automatically controlled according to the signals collected by the system, the application of the system makes the operation of the embedded maglev vehicle more convenient and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The utility model discloses a cooling system's schematic diagram of embodiment shows;

[0030] Figure 2 The utility model discloses a cooling system's schematic diagram of embodiment shows; Figure 1 The heat exchanger of embodiment of the utility model;

[0031] Figure 3 The utility model discloses a cooling system's schematic diagram of embodiment shows; Figure 1 The installation schematic diagram of cooling plate of embodiment of the utility model;

[0032] Wherein: 1-water cooling unit;101-heat exchanger;102-cooling fan;103-temperature sensor;104-pressure sensor;2-circulating water pump;3-first expansion water tank;4-water cooling pipeline assembly;5-electromagnet;6-cooling plate;7-water cooling linear motor;8-second expansion water tank;9-lead into paste;10-U-shaped mounting plate. DETAILED DESCRIPTION

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The present invention will now be described in detail.

[0035] Example 1:

[0036] like Figures 1 to 3 As shown, this embodiment provides a cooling system for cooling linear motors and electromagnets in maglev vehicles, addressing the technical problem of low heat dissipation efficiency in existing linear motor water cooling systems. The cooling system is independently installed in the suspension frame of the lower part of the vehicle body and the running gear, and is restricted by the equipment under the vehicle body and the suspension frame of the running gear. The cooling system includes a water cooling unit 1 and a water cooling pipeline assembly 4. The water cooling unit 1 is installed in the lower part of the vehicle body to provide circulating cooling water.

[0037] The water-cooled piping assembly 4 includes a main pipe and branch pipes. The main pipe is arranged along the bottom of the vehicle body, and the branch pipes are arranged along the running section. The main pipe is fluidly connected to the water-cooling unit 1. The water-cooled linear motor 7 and electromagnet 5, which are mounted on the running section, are respectively connected to cooling plates 6. The branch pipes are fluidly connected to the cooling plates 6. The cooling plates 6 cool the water-cooled linear motor 7 and electromagnet 5 to form a water-cooled circulation.

[0038] Considering the lightweight and miniaturized design of the linear motor system and electromagnet 5, this implementation installs the water-cooling unit on the lower part of the vehicle body, with the main pipeline set along the bottom of the vehicle body and the branch pipeline set along the running section; and each water-cooled linear motor 7 and two suspended electromagnets 5 correspond to a cooling plate 6, through which the corresponding water-cooled linear motor 7 and electromagnet 5 can be cooled at the same time.

[0039] As described above, the water cooling pipeline assembly 4 in the cooling system of the embodiment is designed in a branch manner, and the branch pipelines correspond to the corresponding cooling plates 6 to form a water cooling circulation. The structure design can effectively meet the urgent needs of lightweight and small size design in the design of the embedded maglev vehicle linear motor system and the electromagnet 5.

[0040] Specifically, the water cooling unit 1 comprises a heat exchanger 101 installed at the bottom of the vehicle body. The heat exchanger 101 is provided with a water inlet and a water outlet. The water inlet of the heat exchanger 101 and the water outlet of the heat exchanger 101 are arranged in fluid communication with the main pipeline. As a preferred embodiment, the water inlet of the heat exchanger 101 and the water outlet of the heat exchanger 101 are both provided with quick couplings, which facilitates the automatic control of the opening and closing of the water inlet of the heat exchanger 101 and the water outlet of the heat exchanger 101.

[0041] The water cooling unit 1 further comprises a cooling fan 102 for cooling the cooling liquid in the heat exchanger 101 and a circulating water pump 2,

[0042] Specifically, the cooling fan 102 is installed on the air duct of the heat exchanger 101 and connected by riveting. The air generated by the cooling fan 102 reaches the cooling liquid in the heat exchanger 101 through a special air duct. An infinitely variable speed centrifugal fan is used, and the air inlet mode is from the end of the fan, and the air outlet mode is circumferential.

[0043] The circulating water pump is connected to the air duct of the heat exchanger 101 by riveting to provide circulating power for the cooling water. The installation mode of the cooling fan 102 and the heat exchanger 101 adopts a redundant design, so that when one of the fans fails, the other fan automatically starts working. The specific installation mode of the cooling fan 102, the circulating water pump 2 and the heat exchanger 101 is a prior art, which will not be described here.

[0044] As described above, the cooling system provided by the embodiment adopts an independent centralized heat dissipation system, which can better dissipate heat for the water-cooled linear motor 7 and the electromagnet 5, so that the system runs more safely and reliably.

[0045] To improve the stability of the pressure in the heat exchanger 101, the water cooling unit 1 provided by the embodiment further comprises an expansion tank, which can be installed in the vehicle body. The embodiment takes the first expansion tank 3 and the second expansion tank 8 as an example. The first expansion tank 3 and the second expansion tank 8 are arranged in fluid communication with the heat exchanger 101 through pipelines, respectively, for balancing the pressure of the heat exchanger 101. As a preferred embodiment of the present embodiment, a pressure relief valve is installed at the top of the expansion tank for maintaining the pressure balance of the expansion tank. A liquid level meter is arranged on the side of the expansion tank close to the vehicle body for monitoring the height of the cooling liquid in the expansion tank.

[0046] To enhance the water cooling heat dissipation effect of the water-cooled linear motor 7, the circulating water pump 2 of the water-cooled linear motor 7 provided in the embodiment is configured with a water-cooled substrate assembly, and the water-cooled unit 1 is arranged in fluid communication with the cooling plate 6 and the water-cooled substrate assembly through the water-cooled pipe assembly 4 to form a water cooling circulation; specifically, the main pipe connected with the heat exchanger 101 in the embodiment is arranged in fluid communication with the water-cooled substrate assembly configured in the circulating water pump 2 of the embodiment to realize the water cooling circulation of the circulating water pump 2 of the linear motor system.

[0047] As a preferred design of the embodiment, the cold pipe assembly provided in the embodiment is provided with a pressure sensor 104 and a temperature sensor 103 on the corresponding pipe, which are used to monitor the temperature and pressure of the cooling liquid in the cooling system; the specific installation points are arranged according to the actual design needs, such as Figure 2 As shown in the figure, the pressure sensor 104 and the temperature sensor 103 provided in the embodiment are installed on the main pipe close to the water inlet of the heat exchanger 101 and the water outlet of the heat exchanger 101, which are used to monitor the temperature and pressure of the cooling liquid in the system in real time, whether they are in a reasonable range, which helps to find and eliminate system failures in time, such as whether there is pipe blockage, liquid leakage, insufficient system heat dissipation caused by gas in the pipe, etc.

[0048] Embodiment 2:

[0049] The embodiment provides a cooling system for cooling the linear motor and electromagnet of the maglev vehicle, wherein the cooling system is basically the same as that in embodiment 1, and the difference lies in that the running part provided in the embodiment includes left and right running parts arranged in parallel, and 10 water-cooled linear motors 7 and 20 suspension electromagnets 5 are respectively installed on the left and right running parts, the suspension electromagnets 5 are symmetrically arranged on both sides of the water-cooled linear motor 7, and the branch pipes arranged on both sides of the left and right running parts are arranged in parallel.

[0050] As a preferred design of the embodiment, the embodiment provides one cooling plate 6 corresponding to each water-cooled linear motor 7 and two suspension electromagnets 5, and the corresponding water-cooled linear motor 7 and electromagnet 5 can be cooled at the same time through the cooling plate 6, such as Figure 3As shown, the water-cooled linear motor 7 and the electromagnet 5 provided by the embodiment can be fixedly installed on the running part through the U-shaped mounting plate 10, the water-cooled linear motor 7 is fixed in the concave part of the U-shaped mounting plate 10, and the two electromagnets 5 are fixed on the free end of the U-shaped mounting plate 10, the water-cooled linear motor 7 and the electromagnet 5 installed on the running part are connected with the cooling plate 6 through the heat-conducting material, the heat-conducting material can be the lead-in paste 9, that is, the water-cooled linear motor 7 and the electromagnet 5 are connected with the cooling plate 6 through the lead-in paste 9, the cooling plate 6 is tightly attached to the bottom of the water-cooled linear motor 7 and the side wall of the electromagnet 5, and the lead-in paste 9 is used for heat transfer; meanwhile, the branch pipelines in the water-cooled pipeline assembly 4 are arranged in fluid communication with each cooling plate 6 correspondingly to form a parallel water-cooled circulation system; the U-shaped mounting plate 10 can be a pure iron mounting plate, and of course, other material structures with good heat-conducting performance and stable magnetic properties and structural performance in the prior art can also be selected, which are all within the protection scope of the utility model.

[0051] As a further preferred embodiment of the present embodiment, the material of the cooling plate 6 is aluminum alloy, which meets the high heat dissipation efficiency and meets the urgent needs of lightweight and miniaturization in the linear motor system design.

[0052] Embodiment 3:

[0053] The present embodiment provides an embedded maglev vehicle, wherein the cooling system is basically the same as that of embodiment 1, and as a preferred embodiment of the present embodiment, the arrangement form of the cooling system is basically the same as that of embodiment 2, and of course, adaptive adjustment can be made according to the design position of the water-cooled linear motor 7 and the electromagnet 5 on the embedded maglev vehicle, which are all within the protection scope of the utility model.

[0054] In summary, the cooling system of the present embodiment adopts an independent centralized heat dissipation system and automatic control, aiming at the technical problem of low heat dissipation efficiency of the existing water-cooled linear motor system, a same set of water-cooled system is used to uniformly and centrally dissipate heat for the electromagnet 5 and the water-cooled linear motor 7 of the maglev vehicle, the centralized heat dissipation system greatly improves the overall heat dissipation efficiency of the linear motor system, has obvious effect on the overall weight reduction of the linear motor system, can effectively meet the urgent needs of lightweight and miniaturization design in the linear motor system and the electromagnet 5, and the heat dissipation effect is obviously improved, which has good application prospect for promoting the development of the linear motor system, and is suitable for popularization and application of the embedded maglev vehicle.

[0055] The utility model is not limited to the foregoing specific embodiments. The utility model extends to any new feature disclosed in this specification or any new combination, as well as any new method or process step disclosed or any new combination.

Claims

1. A cooling system for cooling a linear motor and electromagnets of a maglev vehicle, the linear motor and electromagnets being installed on a running section of the maglev vehicle, characterized by, The cooling system is independently installed in the suspension frame of the lower part of the vehicle body and the running part of the maglev vehicle, wherein the cooling system comprises: a water cooling unit for providing circulating cooling water; a water cooling pipeline assembly, the water cooling pipeline assembly comprising a main pipeline and a branch pipeline, wherein the main pipeline is connected in fluid communication with the water cooling unit, the linear motor and the electromagnet are respectively connected with a cooling plate, and the branch pipeline is connected in fluid communication with the cooling plate to form a water cooling circulation; the water cooling unit is installed in the lower part of the vehicle body, the main pipeline is arranged along the bottom of the vehicle body, the branch pipeline is arranged along the running part, and each water-cooled linear motor and two suspension electromagnets correspond to a cooling plate, and the corresponding water-cooled linear motor and electromagnet can be simultaneously cooled by the cooling plate.

2. The cooling system of claim 1, wherein, The water cooling unit further comprises: a heat exchanger installed at the bottom of the vehicle body; the heat exchanger is provided with a water inlet and a water outlet, and the water inlet and the water outlet are arranged in fluid communication with the main pipeline.

3. The cooling system of claim 2, wherein, The water cooling unit further comprises a cooling fan and a circulating water pump for cooling the cooling liquid in the heat exchanger.

4. The cooling system of claim 2, wherein, The heat exchanger inlet and the heat exchanger outlet are each provided with a quick connector.

5. The cooling system of claim 2, wherein, The water cooling unit further comprises an expansion tank, which is installed in the vehicle body and is arranged in fluid communication with the heat exchanger through a pipeline for balancing the pressure of the heat exchanger.

6. The cooling system of claim 5, wherein, A pressure relief valve is installed at the top of the expansion tank for maintaining the pressure balance of the expansion tank. A liquid level meter is arranged near the side of the expansion tank inside the vehicle body for monitoring the height of the cooling liquid in the expansion tank.

7. The cooling system of claim 3, wherein, The circulating water pump is configured with a water-cooled baseboard assembly, and the water cooling unit is arranged in fluid communication with the cooling plate and the water-cooled baseboard assembly through the water cooling pipeline assembly to form a water cooling circulation.

8. The cooling system of claim 1, wherein: Pressure sensors and temperature sensors are installed on the corresponding pipelines of the water cooling pipeline assembly for monitoring the temperature and pressure of the cooling liquid in the cooling system.

9. The cooling system of claim 1, wherein, The running part comprises left and right running parts arranged in parallel, and a plurality of water-cooled linear motors and a plurality of suspension electromagnets are respectively installed on the left and right running parts, and the branch pipelines arranged on both sides of the left and right running parts are arranged in parallel.

10. The cooling system of claim 1, wherein, The water-cooled linear motors and electromagnets on the running part are connected to the cooling plate through a heat-conducting material, the heat-conducting material is a lead-in paste, and the cooling plate is tightly attached to the bottom of the water-cooled linear motor and the side wall of the electromagnet.

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