A liquid-cooled plate and liquid-cooled circulation system for maglev trains

Abstract

This utility model relates to the field of maglev transportation technology, aiming to solve the problem of the lack of a heat dissipation device in the prior art that can be installed inside the track beam and effectively dissipate heat from the primary of the linear motor and the levitation electromagnet. It provides a liquid-cooled plate and liquid-cooled circulation system for maglev trains. The liquid-cooled plate includes a hollow shell with an inlet and an outlet. The interior of the shell is a coolant cavity through which coolant is introduced, flowing in from the inlet and out from the outlet. The liquid-cooled plate is installed between the primary of the linear motor and the levitation electromagnet. Cooling insertion holes are formed on the shell to provide insertion space for the cylindrical connector at the bottom of the primary of the linear motor. The liquid-cooled plate of this utility model dissipates heat from the primary of the linear motor and the levitation electromagnet through liquid cooling, with the heat being carried away by the coolant, resulting in good heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of maglev transportation technology, and more specifically, to a liquid-cooled plate and liquid-cooled circulation system for maglev trains. Background Technology

[0002] Maglev transportation uses non-adhesive operation, featuring strong climbing ability, small turning radius, and low noise. Maglev urban rail transit has been developing for many years, with continuous updates to product forms. Based on different vehicle and track structures, maglev transportation is divided into externally enclosed maglev systems and internally embedded maglev systems.

[0003] Medium- and low-speed maglev trains utilize a linear motor primary to provide traction and a levitation electromagnet to provide levitation force. The magnitude of traction and levitation force is determined by the electromagnetic power per unit area. Given a fixed size for the train's magnet unit, the area of ​​the linear motor primary and the levitation electromagnet is also fixed. To increase traction and levitation force, the electromagnetic power per unit area must be increased. The greater the electromagnetic power per unit area, the greater the heat generated. Without specific heat dissipation methods, the linear motor primary and the levitation electromagnet will burn out, affecting train safety.

[0004] In an externally mounted maglev system, the linear motor primary, levitation electromagnet, and other equipment are exposed on the outside of the track. The heat generated by the linear motor primary and levitation electromagnet is basically sufficient for the cooling of the maglev vehicle through natural air cooling. If natural air cooling is insufficient, fans can be installed at the vehicle platform or on the linear motor primary or levitation electromagnet to accelerate heat dissipation and meet the requirements.

[0005] Embedded maglev system structure such as Figure 1 As shown, the bottom of the carriage 1 is connected to the suspension support 5 via connector 2. A forced air cooling unit 4 is installed at the bottom of the carriage 1. The linear motor primary 6 and the suspension electromagnet 7, mounted on the suspension support 5, are sealed inside the track beam 3. The heat generated by the equipment is not effectively cooled by natural air cooling. Due to the limited space inside the track beam 3, it is not convenient to directly install fans for cooling on the linear motor primary 6 and the suspension electromagnet 7. Even if fans are directly installed on the linear motor primary 6 and the suspension electromagnet 7, the hot air generated by forced air cooling continues to circulate inside the track beam 3, and the cooling effect cannot meet the operational requirements of large passenger flows.

[0006] Therefore, the heat generated by the linear motor primary 6 and the levitation electromagnet 7 needs to be transferred to the outside of the embedded magnetic levitation track beam 3 in a timely and efficient manner for heat dissipation. Since the space inside the embedded magnetic levitation track beam 3 is limited, the added heat dissipation equipment needs to meet the installation space requirements and at the same time meet the heat dissipation requirements of the linear motor primary 6 and the levitation electromagnet 7. Utility Model Content

[0007] The present invention aims to provide a liquid cooling plate and liquid cooling circulation system for maglev trains, so as to solve the problem that there is no heat dissipation device in the prior art that can be installed in the track beam and can effectively dissipate heat from the primary of the linear motor and the levitation electromagnet.

[0008] This utility model is achieved using the following technical solution: This utility model provides a liquid-cooled plate for maglev trains, including a hollow shell with an inlet and an outlet. The interior of the shell is a coolant cavity for introducing coolant, which flows in from the inlet and out from the outlet. The liquid cooling plate is used to be installed between the primary of the linear motor and the levitation electromagnet; The housing has cooling holes formed thereon, which are used to provide insertion space for the cylindrical connector at the bottom of the primary of the linear motor.

[0009] This invention utilizes a liquid-cooled plate installed within the track beam between the linear motor primary and the levitation electromagnet. The liquid-cooled plate contacts both the linear motor primary and the levitation electromagnet for heat exchange, dissipating heat through liquid cooling. Specifically, the heat generated by the linear motor primary and the levitation electromagnet is conducted to the coolant flowing within the coolant cavity. The coolant flows in through the inlet of the liquid-cooled plate and out through its outlet, with the cooled liquid exiting the track beam. This improves thermal conductivity and enhances heat dissipation, effectively cooling the linear motor primary and the levitation electromagnet even in confined spaces within an embedded track. Compared to forced air cooling, this invention removes heat through coolant, eliminating the circulation of hot air within the track beam and resulting in better heat dissipation and cooling performance. It provides a heat dissipation device that can be installed within a track beam and effectively cools the linear motor primary and the levitation electromagnet, solving the problems currently existing in the prior art.

[0010] The liquid cooling plate of this invention is positioned between the primary of the linear motor and the levitation electromagnet, and is positioned by cooperating with the column-shaped connector through the cooling socket. No additional fasteners are needed to fix the liquid cooling plate. Moreover, this design can reduce the space occupied by the embedded track and meet the installation space requirements.

[0011] As a preferred technical solution: Vertical cooling holes are formed on the housing.

[0012] As a preferred technical solution: The liquid inlet is provided at one end of the housing, and the liquid outlet is provided at the other end.

[0013] As a preferred technical solution: The inlet and outlet are located diagonally opposite each other on the housing.

[0014] As a preferred technical solution: At least two cooling holes are formed on the housing.

[0015] As a preferred technical solution: The upper and lower panels of the housing are respectively provided with corresponding through holes. A vertical wall plate is provided around the periphery of the through hole. The upper and lower ends of the wall plate are fixedly connected to the upper panel and the lower panel, respectively. The space enclosed by all the wall plates is the cooling insertion hole.

[0016] As a preferred technical solution: The through hole can be a square hole or a round hole, and the wall panel can be a flat plate or an arc plate.

[0017] As a preferred technical solution: The housing has several support plates inside, which are arranged along the longitudinal direction of the housing. The upper and lower ends of the support plates are fixedly connected to the upper panel and the lower panel, respectively.

[0018] In this context, "longitudinal" refers to the direction of coolant flow.

[0019] As a preferred technical solution: Each of the cooling insertion holes is provided with a set of support plates. The two support plates are arranged symmetrically about the center of the cooling insertion hole. One end of the support plate is fixedly connected to the wall plate corresponding to the cooling insertion hole, and a channel is left between the other end of the support plate and the wall plate corresponding to another cooling insertion hole or the side plate of the housing. A support plate is fixedly connected to each of the left and right side plates of the housing, and the two support plates are arranged symmetrically about the center of the housing.

[0020] As a preferred technical solution: The interior of the housing is provided with a plurality of heat-conducting plates, which are arranged along the longitudinal direction of the housing. The upper and lower ends of the heat-conducting plates are fixedly connected to the upper panel and the lower panel, respectively, and the heat-conducting plates are arranged between two opposing support plates.

[0021] As a preferred technical solution: The support plate, the heat-conducting plate, and the shell form an integral structure.

[0022] As a preferred technical solution: The outer surfaces of the upper and lower panels of the housing are coated with thermal grease.

[0023] As a preferred technical solution: Other thermal interface materials can also be used, not just thermal grease.

[0024] This utility model further provides a liquid cooling circulation system for maglev trains, including a plurality of the above-mentioned liquid cooling plates, all of which are connected in series by pipes.

[0025] As a preferred technical solution: Each of the liquid cooling plates is equipped with a shut-off valve at both the inlet and outlet.

[0026] As a preferred technical solution: The liquid cooling circulation system also includes a forced air cooling unit, a water pump, and a coolant container; The liquid outlet of the liquid cooling plate at the end is connected to the forced air cooling unit, which is used to cool the coolant that has absorbed heat; the forced air cooling unit is connected to the water pump, which is connected to the liquid inlet of the liquid cooling plate at the beginning. The coolant container is connected to the inlet of the water pump via a pipeline.

[0027] The water pump is used to pump the cooled coolant to the liquid cooling plate located at the head end, so that it enters each liquid cooling plate in sequence. The coolant container is used to achieve evaporation replenishment.

[0028] As a preferred technical solution: Temperature sensors, pressure sensors, and flow sensors are installed on the circulation pipeline formed by all the liquid cooling plates, the forced air cooling unit, and the water pump.

[0029] As a preferred technical solution: The temperature sensor, the pressure sensor, and the flow sensor are all connected to the train control system, transmitting the measured data to the train control system. The train control system is also connected to the forced air cooling unit for controlling the forced air cooling unit.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. The liquid cooling plate of this utility model can be installed between the primary of the linear motor and the levitation electromagnet, and achieves heat exchange by contacting the primary of the linear motor and the levitation electromagnet. It dissipates heat from the primary of the linear motor and the levitation electromagnet through liquid cooling. Specifically, the heat generated by the primary of the linear motor and the levitation electromagnet is conducted to the coolant flowing in the coolant cavity. The coolant flows in from the inlet of the liquid cooling plate and flows out from the outlet of the liquid cooling plate. The coolant that has absorbed heat flows out of the outside of the track beam. In this way, the heat conduction efficiency is improved and the heat dissipation effect is enhanced. It can effectively dissipate heat from the primary of the linear motor and the levitation electromagnet even when the space of the embedded track is limited.

[0031] 2. The liquid cooling plate of this utility model is set between the primary of the linear motor and the levitation electromagnet and is positioned by cooperating with the column-shaped connector through the cooling hole. There is no need to set additional fasteners to fix the liquid cooling plate. Moreover, this design can reduce the space occupied by the embedded track and meet the installation space requirements.

[0032] 3. The liquid cooling circulation system of this utility model conducts the heat generated by the primary of the linear motor and the levitation electromagnet to the coolant flowing in the coolant chamber. The coolant that has absorbed heat flows through pipelines to the forced air cooling unit outside the track beam. The forced air cooling unit quickly dissipates the heat of the coolant into the air. The coolant that has dissipated heat returns to the liquid cooling plate through a water pump. The power of the forced air cooling unit is controlled by the train control system to adjust its cooling effect and ensure that the temperature of the primary of the linear motor and the levitation electromagnet is kept within the control range during operation. Evaporation replenishment is achieved through the coolant container.

[0033] 4. The liquid cooling circulation system of this utility model has excellent thermal conductivity of the liquid cooling plate, which can quickly and effectively dissipate heat from the primary of the linear motor and the levitation electromagnet. Combined with the forced air cooling unit and water pump, it can realize the circulation of coolant. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of an existing embedded maglev system.

[0035] Figure 2 This is a top sectional view of the liquid cooling plate of this utility model.

[0036] Figure 3 This is a top view (with a square hole) of the liquid cooling plate of this utility model.

[0037] Figure 4 This is a top view of the liquid cooling plate of this utility model (with a circular hole).

[0038] Figure 5 This is a schematic diagram of the assembly of the liquid cooling plate, the primary of the linear motor, and the levitation electromagnet of this utility model.

[0039] Figure 6This is a schematic diagram of the liquid cooling circulation system of this utility model.

[0040] Figure 1 The markings in the diagram are: 1 for the carriage, 2 for the connecting parts, 3 for the track beam, 4 for the forced air cooling unit, 5 for the suspension support, 6 for the primary of the linear motor, and 7 for the suspension electromagnet.

[0041] Figures 2-6 The markings in the diagram are as follows: 1 is the housing, 2 is the cooling port, 3 is the heat-conducting plate, 4 is the support plate, 5 is the liquid inlet, 6 is the liquid outlet, 7 is the linear motor primary, 8 is the levitation electromagnet, 9 is the cooling surface, A is the liquid cooling plate, 10 is the column connector, 11 is the shut-off valve, 12 is the forced air cooling unit, 13 is the water pump, 14 is the coolant container, 15.1 is temperature sensor one, 15.2 is temperature sensor two, 16.1 is pressure sensor one, 16.2 is pressure sensor two, 17 is the flow sensor, and 18 is the train control system. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] Example 1 like Figure 2 As shown, this embodiment proposes a liquid-cooled plate for maglev trains, including a hollow shell 1. One end of the shell 1 is provided with a liquid inlet 5 and the other end is provided with a liquid outlet 6. The interior of the shell 1 is a coolant cavity, in which coolant is introduced. The coolant flows in from the liquid inlet 5 and flows out from the liquid outlet 6.

[0044] A vertical cooling insertion hole 2 is formed on the housing 1. The cooling insertion hole 2 is a through hole, which provides an insertion space for the cylindrical connector 10 at the bottom of the linear motor primary 7. The cylindrical connector 10 is fixedly connected to the bottom of the linear motor primary 7 and is fixedly integrated with the linear motor primary 7. Figure 5As shown, in use, the liquid cooling plate A is installed between the linear motor primary 7 and the levitation electromagnet 8, and the cylindrical connector 10 at the bottom of the linear motor primary 7 is inserted into the cooling socket 2. Thus, the clamping force between the linear motor primary 7 and the levitation electromagnet 8 restricts the vertical displacement of the liquid cooling plate A, and the engagement of the cylindrical connector 10 with the cooling socket 2 restricts the lateral and longitudinal displacement of the liquid cooling plate A. The liquid cooling plate A can be fixed without the need for additional fasteners.

[0045] The contact surface between the liquid cooling plate A and the linear motor primary 7 and the levitation electromagnet 8 is the cooling surface 9. The structure of the cooling surface 9 is determined according to the structure of the surface 9 to be cooled of the linear motor primary 7 and the levitation electromagnet 8. The heat conduction efficiency can be improved and the heat dissipation effect can be enhanced by increasing the contact area between the liquid cooling plate A and the linear motor primary 7 and the levitation electromagnet 8.

[0046] In this embodiment, the cooling surface 9 is planar. Since the housing 1 has cooling insertion holes 2, the cylindrical connector 10 is inserted into these holes. This not only allows the liquid cooling plate to make surface contact with the linear motor primary 7 and the levitation electromagnet 8, meeting high flatness requirements, improving heat conduction efficiency, and enhancing heat dissipation, but also reduces the space occupied by the embedded track, meeting installation space requirements. Furthermore, it eliminates the need for additional fasteners (such as bolts) to fix the liquid cooling plate, solving the problem of not being able to use bolts for connection with the linear motor primary 7 and the levitation electromagnet 8. It also avoids increasing the weight of the liquid cooling plate due to fasteners (such as bolts) connecting it to other structures, and avoids stress concentration on the liquid cooling plate caused by fasteners on its exterior, thus extending its service life.

[0047] Preferably, at least two cooling holes 2 are formed on the housing 1.

[0048] Preferably, the upper panel and the lower panel of the housing 1 are respectively provided with corresponding through holes, the through holes on the upper panel and the lower panel are arranged coaxially, and a vertical wall plate is provided around the through hole. The upper and lower ends of the wall plate are fixedly connected to the upper panel and the lower panel respectively, and the space enclosed by all the wall plates is the cooling insertion hole 2.

[0049] Preferred, such as Figure 3 and Figure 4 As shown, the through hole can be a square hole or a round hole, and the wall panel can be a flat plate or an arc-shaped plate to adapt to the shape of the through hole.

[0050] Preferably, the liquid inlet 5 and the liquid outlet 6 are arranged diagonally on the housing 1. The housing 1 adopts a diagonal flow channel design to allow the coolant to fully exchange heat with the liquid cooling plate. The coolant exchanges heat with the linear motor primary 7 and the levitation electromagnet 8 through the liquid cooling plate, and the coolant carries away the heat to dissipate heat from the linear motor primary 7 and the levitation electromagnet 8.

[0051] Preferably, the housing 1 has a plurality of support plates 4 inside, the support plates 4 are arranged along the longitudinal direction of the housing 1, and the upper and lower ends of the support plates 4 are welded and fixed to the upper panel and the lower panel respectively. The support plates 4 can serve as a support structure between the upper panel and the lower panel, and can also form a bent flow channel in the housing 1 to ensure that the coolant flows fully to all parts of the housing 1 from the inlet 5 to the outlet 6, so as to improve the heat dissipation effect.

[0052] Preferred, such as Figure 2 As shown, a set of support plates 4 are arranged at each of the cooling insertion holes 2. The two support plates 4 are arranged symmetrically about the center of the cooling insertion hole 2. One end of the support plate 4 is welded and fixed to the wall plate corresponding to the cooling insertion hole 2. A channel is left between the other end of the support plate 4 and the wall plate corresponding to the other cooling insertion hole 2 or the side plate of the housing 1. A support plate 4 is fixedly connected to each of the left and right side plates of the housing 1, and the two support plates 4 are arranged symmetrically about the center of the housing 1.

[0053] Preferred, such as Figure 2 As shown, the interior of the housing 1 is provided with several heat-conducting plates 3. The heat-conducting plates 3 are arranged longitudinally along the housing 1. The upper and lower ends of the heat-conducting plates 3 are welded and fixed to the upper panel and the lower panel, respectively. The heat-conducting plates 3 are arranged between two opposing support plates 4. The heat-conducting plates 3 are used to uniformly guide the coolant to all parts of the housing 1, ensuring uniform liquid pressure in all areas inside the liquid cooling plate. The heat-conducting plates 3 and the support plates 4 cooperate with each other, both of which are arranged longitudinally (in the same direction as the coolant flow). While ensuring that the coolant flows uniformly to all parts of the housing 1 and that the pressure difference of the coolant flowing through the liquid cooling plate is small, the flow resistance is reduced, and the impact of the coolant on the heat-conducting plates 3 and the support plates 4 is reduced.

[0054] The support plate 4, the heat-conducting plate 3, and the housing 1 form an integral structure, and the liquid cooling plate of the whole vehicle can be used interchangeably.

[0055] Preferably, the liquid cooling plate is made of aluminum alloy, which takes into account both thermal conductivity and lightweight design, but is not limited to aluminum alloy.

[0056] Preferably, while ensuring strength, the coolant cavity of the liquid cooling plate can be milled to its maximum (the wall thickness of the liquid cooling plate at the heat conduction point is 2mm to 5mm), which reduces the weight of the liquid cooling plate while accelerating heat conduction.

[0057] The liquid-cooled plate of this invention can be installed between the linear motor primary 7 and the levitation electromagnet 8, and contacts the linear motor primary 7 and the levitation electromagnet 8 to achieve heat exchange. It dissipates heat from the linear motor primary 7 and the levitation electromagnet 8 through liquid cooling. Specifically, the heat generated by the linear motor primary 7 and the levitation electromagnet 8 is conducted to the coolant flowing in the coolant cavity. The coolant flows in from the inlet 5 of the liquid-cooled plate and flows out from the outlet 6 of the liquid-cooled plate. The coolant that has absorbed heat flows out of the track beam. In this way, the heat conduction efficiency is improved and the heat dissipation effect is enhanced, which can achieve effective heat dissipation in the case of limited space in the embedded track.

[0058] The liquid cooling plate of this invention is disposed between the primary stage 7 of the linear motor and the levitation electromagnet 8, and is positioned by cooperating with the column-shaped connector 10 at the bottom of the primary stage 7 through the cooling socket 2, without the need for additional fasteners to fix the liquid cooling plate.

[0059] Example 2 The difference between this embodiment and Embodiment 1 is that if the thermal conductivity of the liquid cooling plate cannot meet the requirements, thermal conductive paste can be applied to the outer surfaces of the upper and lower panels of the housing 1 to improve the thermal conductivity.

[0060] Example 3 like Figure 6 As shown, this embodiment proposes a liquid cooling circulation system for maglev trains, including several liquid cooling plates (liquid cooling plate 1, liquid cooling plate 2... liquid cooling plate n) as described in Embodiment 1, and all the liquid cooling plates are connected in series by flexible hoses.

[0061] Preferably, each of the liquid-cooled plates is equipped with a shut-off valve 11 at both the inlet 5 and outlet 6. The shut-off valve 11 can cut off or allow the flow of coolant. If the liquid-cooled plate needs to be removed during train maintenance, simply close the shut-off valve 11 corresponding to that liquid-cooled plate and then disconnect the corresponding hose to remove the liquid-cooled plate.

[0062] Preferably, the liquid cooling circulation system further includes a forced air cooling unit 12 and a water pump 13; The liquid outlet 6 of the liquid cooling plate at the end is connected to the forced air cooling unit 12. The coolant after heat exchange enters the forced air cooling unit 12 from the liquid outlet 6 of the liquid cooling plate at the end and is cooled by the forced air cooling unit 12. The forced air cooling unit 12 is connected to the water pump 13, and the water pump 13 is connected to the liquid inlet 5 of the liquid cooling plate located at the first end, forming a circulation pipeline.

[0063] In this way, the coolant after heat exchange can be cooled by the forced air cooling unit 12, and then pumped by the water pump 13 to the liquid cooling plate at the head end, so that it enters each of the liquid cooling plates in sequence and exchanges heat with the linear motor primary 7 and the levitation electromagnet 8.

[0064] Preferably, the liquid cooling plate is arranged inside the track beam, and the forced air cooling unit 12 and the water pump 13 are arranged outside the track beam, with the cooled liquid flowing to the outside of the track beam after heat exchange.

[0065] Preferably, a temperature sensor, a pressure sensor, and a flow sensor 17 are installed on the circulation pipeline formed by all the liquid cooling plates, the forced air cooling unit 12, and the water pump 13. The temperature sensor, pressure sensor, and flow sensor 17 are used to measure the temperature, pressure, and flow rate of the coolant, respectively.

[0066] Preferably, the temperature sensor, the pressure sensor, and the flow sensor 17 are all connected to the train control system 18 to transmit the measured data to the train control system 18. The train control system 18 is also connected to the forced air cooling unit 12 to control the forced air cooling unit 12.

[0067] Preferably, the forced air cooling unit 12 is provided with a temperature sensor at its inlet and outlet, namely temperature sensor 15.1 and temperature sensor 15.2, respectively. Both temperature sensor 15.1 and temperature sensor 15.2 are connected to the train control system 18.

[0068] Under operating conditions, the train control system 18 monitors the temperature values ​​of the two temperature sensors in real time and calculates the temperature difference between the two sensors. When the temperature difference is less than the set lower threshold, the train control system 18 issues a command to increase the power and rotation speed of the forced air cooling unit 12 to increase the heat dissipation efficiency. When the temperature difference is greater than the set upper threshold, the train control system 18 issues a command to decrease the power of the forced air cooling unit 12 to achieve energy saving. When the train control system 18 detects that the temperature of the temperature sensor 15.2 at the liquid outlet of the forced air cooling unit 12 is higher than the set threshold, it issues an emergency stop command.

[0069] Preferably, a pressure sensor is provided between the water pump 13 and the forced air cooling unit 12 and the liquid cooling plate at the head end, respectively, namely pressure sensor one 16.1 and pressure sensor two 16.2, and both pressure sensor one 16.1 and pressure sensor two 16.2 are connected to the train control system 18.

[0070] Under operating conditions, the train control system 18 monitors the pressure values ​​of the two pressure sensors in real time and calculates the pressure difference between the two pressure sensors. When the pressure difference exceeds the specified value, the train control system 18 issues a command to reduce the power of the forced air cooling unit 12, or issues an emergency stop command.

[0071] Preferably, the liquid cooling circulation system further includes a coolant container 14, which is arranged outside the track beam and connected to the inlet of the water pump 13 via a pipeline. The coolant container 14 is used to achieve evaporation replenishment.

[0072] Preferably, the coolant container 14 is normally isolated from the atmosphere. When the difference between the internal pressure and the atmospheric pressure reaches a set value, the valve of the coolant container 14 opens to achieve air exchange, so that the air pressure of the coolant container 14 is consistent with the atmospheric pressure.

[0073] The liquid cooling circulation system of this invention conducts the heat generated by the linear motor primary 7 and the levitation electromagnet 8 to the coolant flowing in the coolant cavity. The coolant that has absorbed heat flows through pipelines to the forced air cooling unit 12 outside the track beam. The forced air cooling unit 12 quickly dissipates the heat of the coolant into the air (the forced air cooling unit 12 is existing technology, for example, it includes a fan or blower, which can cool the coolant). The coolant that has dissipated heat returns to the liquid cooling plate through the water pump 13. The power of the forced air cooling unit 12 is controlled by the train control system 18 to adjust its cooling effect and ensure that the temperature of the linear motor primary 7 and the levitation electromagnet 8 is kept within the control range during operation. Evaporation replenishment is achieved through the coolant container 14.

[0074] The liquid cooling circulation system of this invention features a liquid cooling plate with excellent thermal conductivity, which can efficiently dissipate heat from the linear motor primary 7 and the levitation electromagnet 8. Combined with the forced air cooling unit 12 and the water pump 13, it can achieve the circulation of coolant.

[0075] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A liquid-cooled plate for maglev trains, characterized in that: The device includes a hollow shell with an inlet and an outlet. The interior of the shell is a coolant cavity for introducing coolant. The coolant flows in from the inlet and flows out from the outlet. The liquid cooling plate is used to be installed between the primary of the linear motor and the levitation electromagnet; The housing has cooling holes formed thereon, which are used to provide insertion space for the cylindrical connector at the bottom of the primary of the linear motor.

2. The liquid-cooled plate for maglev trains according to claim 1, characterized in that: The inlet and outlet are located diagonally opposite each other on the housing.

3. The liquid-cooled plate for maglev trains according to claim 1, characterized in that: At least two cooling holes are formed on the housing.

4. The liquid-cooled plate for maglev trains according to claim 1, characterized in that: The upper and lower panels of the housing are respectively provided with corresponding through holes. A vertical wall plate is provided around the periphery of the through hole. The upper and lower ends of the wall plate are fixedly connected to the upper panel and the lower panel, respectively. The space enclosed by all the wall plates is the cooling insertion hole.

5. The liquid-cooled plate for maglev trains according to claim 4, characterized in that: The housing has several support plates inside, which are arranged along the longitudinal direction of the housing. The upper and lower ends of the support plates are fixedly connected to the upper panel and the lower panel, respectively.

6. The liquid-cooled plate for maglev trains according to claim 5, characterized in that: The interior of the housing is provided with a plurality of heat-conducting plates, which are arranged along the longitudinal direction of the housing. The upper and lower ends of the heat-conducting plates are fixedly connected to the upper panel and the lower panel, respectively, and the heat-conducting plates are arranged between two opposing support plates.

7. The liquid-cooled plate for maglev trains according to claim 6, characterized in that: The support plate, the heat-conducting plate, and the shell form an integral structure.

8. A liquid-cooled circulation system for maglev trains, characterized in that: It includes several liquid cooling plates as described in any one of claims 1-7, and all the liquid cooling plates are connected in series by pipes.

9. The liquid cooling circulation system for maglev trains according to claim 8, characterized in that: Each of the liquid cooling plates is equipped with a shut-off valve at both the inlet and outlet.

10. The liquid cooling circulation system for maglev trains according to claim 8, characterized in that: The liquid cooling circulation system also includes a forced air cooling unit, a water pump, and a coolant container; The liquid outlet of the liquid cooling plate at the end is connected to the forced air cooling unit, which is used to cool the coolant that has absorbed heat; the forced air cooling unit is connected to the water pump, which is connected to the liquid inlet of the liquid cooling plate at the beginning. The coolant container is connected to the inlet of the water pump via a pipeline.

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