A refrigeration system

Abstract

The refrigeration system disclosed in the present invention is intended for installation in a high-temperature superconducting electric maglev vehicle and includes a low-temperature refrigerator, an air-cooled heat sink, a circulating water pump, and a water-cooled chiller. The low-temperature refrigerator is used to continuously provide cooling energy to the high-temperature superconducting magnets of the high-temperature superconducting electric maglev vehicle. The heat generated by its operation is dissipated through the air-cooled heat sink and the water-cooled chiller, thereby achieving continuous and stable operation of the refrigeration system. The refrigeration system disclosed in the embodiment of the present invention uses a low-temperature refrigerator to provide cooling energy to the high-temperature superconducting magnets of the high-temperature superconducting electric maglev vehicle. This has low cooling costs and eliminates the need to regularly replenish refrigerant to the refrigeration system. This maintains the ultra-low temperature environment required for the operation of the high-temperature superconducting magnets and meets the lightweight design requirements of the vehicle. Furthermore, the system is simple to install and easy to maintain, facilitating the long-term operation of the high-temperature superconducting electric maglev vehicle.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and more particularly to a refrigeration system. Background Art

[0002] High-temperature superconducting magnets are a key component that provides levitation and guidance for HTS electric maglev vehicles. Their stable operation is crucial. To maintain the ultra-low temperatures (around 30K) required for operation, a refrigeration system is required to provide consistent cooling to the magnets over a long period of time.

[0003] Existing high-temperature superconducting magnets are cooled by immersing them in a liquid helium zone (4.2K). This cooling method can achieve rapid and uniform cooling of the magnets, but it has disadvantages such as high liquid helium consumption, high cooling costs, and the need for regular refrigerant replenishment to the refrigeration system. Furthermore, the need for regular refills complicates the process, especially for vehicles with long operating times, resulting in bulky liquid helium tanks that hinder lightweight vehicle design. On the other hand, a smaller liquid helium tank would limit the vehicle's operating time.

[0004] Therefore, how to maintain the ultra-low temperature environment required for the operation of high-temperature superconducting magnets and meet the lightweight design requirements of vehicles has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a refrigeration system to maintain the ultra-low temperature environment required for the operation of high-temperature superconducting magnets and meet the lightweight design requirements of vehicles.

[0006] Another object of the present invention is to provide a high-temperature superconducting electric maglev vehicle.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A refrigeration system for use in a high-temperature superconducting electric maglev vehicle, comprising:

[0009] A cryogenic refrigerator, for providing cold energy to the high-temperature superconducting magnet of the high-temperature superconducting electric maglev vehicle, wherein the cryogenic refrigerator comprises a heat exchanger having a heat exchange inlet and a heat exchange outlet;

[0010] An air-cooling heat sink having an air-cooling heat sink outlet and an air-cooling heat sink inlet, wherein the air-cooling heat sink outlet is connected to the heat exchange inlet via a first air-cooling circulation pipeline, and the air-cooling heat sink inlet is connected to the heat exchange outlet via a second air-cooling circulation pipeline, and the high-temperature superconducting electric maglev vehicle has an air duct connected to the air-cooling heat sink;

[0011] a circulating water pump connected in series to the first air-cooling circulation pipeline or the second air-cooling circulation pipeline to circulate the heat exchange medium between the air-cooling heat sink and the heat exchanger;

[0012] The water-cooling machine device has a water-cooling machine outlet and a water-cooling machine inlet. The water-cooling machine outlet is connected to the heat exchange inlet through a first water-cooling machine pipeline, and the water-cooling machine inlet is connected to the heat exchange outlet through a second water-cooling machine pipeline.

[0013] Preferably, in the above-mentioned refrigeration system, a first water-cooling control valve for controlling the switch of the first water-cooling pipeline is provided on the first water-cooling pipeline, and a second water-cooling control valve for controlling the switch of the second water-cooling pipeline is provided on the second water-cooling pipeline.

[0014] Preferably, in the above-mentioned refrigeration system, a first air-cooling control valve for controlling the switch of the first air-cooling circulation pipeline is provided on the first air-cooling circulation pipeline, and a second air-cooling control valve for controlling the switch of the second air-cooling circulation pipeline is provided on the second air-cooling circulation pipeline.

[0015] Preferably, in the above refrigeration system, the water cooling device and the air cooling heat dissipation device are both connected to a plurality of heat exchangers of the low-temperature refrigerators, and are connected in parallel with the heat exchangers of each of the low-temperature refrigerators.

[0016] Preferably, in the above refrigeration system, a first heat exchange pipeline is provided at the heat exchange inlet of the low-temperature refrigerator, and the first heat exchange pipeline is connected to both the first air-cooled circulation pipeline and the first water-cooled machine pipeline;

[0017] The heat exchange outlet of the low-temperature refrigerator is provided with a second heat exchange pipeline, and the second heat exchange pipeline is communicated with both the second air-cooling circulation pipeline and the second water-cooling machine pipeline.

[0018] Preferably, in the above refrigeration system, the first heat exchange pipeline is connected to the first air-cooled circulation pipeline and the first water-cooled machine pipeline via a first connector;

[0019] The second heat exchange pipeline is connected to the second air-cooling circulation pipeline and the second water-cooling machine pipeline via a second connecting piece;

[0020] The first connecting piece and the second connecting piece are both three-way joints.

[0021] Preferably, in the above refrigeration system, a first heat exchange control valve for controlling the opening and closing of the first heat exchange pipeline is provided on the first heat exchange pipeline of the low-temperature refrigerator;

[0022] The second heat exchange pipeline of the low-temperature refrigerator is provided with a second heat exchange control valve for controlling the opening and closing of the second heat exchange pipeline, so as to control each low-temperature refrigerator individually.

[0023] Preferably, in the above refrigeration system, the low-temperature refrigerator is a Stirling refrigerator, and a cold head of the low-temperature refrigerator is used to communicate with a refrigeration cavity in which the high-temperature superconducting magnet is provided.

[0024] Preferably, in the above refrigeration system, the low-temperature refrigerator and the refrigeration chamber are sealed and connected via a flange.

[0025] A high-temperature superconducting electric magnetic levitation vehicle, comprising:

[0026] A high-temperature superconducting magnet is disposed in the refrigeration cavity;

[0027] The refrigeration system is the refrigeration system mentioned above and is arranged outside the refrigeration cavity to provide cold energy for the high-temperature superconducting magnet.

[0028] The refrigeration system provided by the present invention is intended for installation in a high-temperature superconducting electric maglev vehicle and includes a cryogenic refrigerator, an air-cooled heat sink, a circulating water pump, and a water-cooled chiller. The cryogenic refrigerator is used to continuously provide cooling energy to the high-temperature superconducting magnets of the high-temperature superconducting electric maglev vehicle. To dissipate heat from the cryogenic refrigerator and prevent excessive operating temperatures, the cryogenic refrigerator includes a heat exchanger having a heat exchange inlet and a heat exchange outlet. The heat exchange inlet and the heat exchange outlet are used for the inflow and outflow of heat exchange medium, thereby dissipating heat from the cryogenic refrigerator through the heat exchanger. The air-cooled heat sink has an air-cooled heat sink outlet and an air-cooled heat sink inlet. The air-cooled heat sink outlet is connected to the heat exchange inlet via a first air-cooled circulation pipeline, and the air-cooled heat sink inlet is connected to the heat exchange outlet via a second air-cooled circulation pipeline. The air-cooled heat sink can cool the heat exchange medium in the heat exchanger of the cryogenic refrigerator via the first and second air-cooled circulation pipelines to dissipate heat from the cryogenic refrigerator. The HTS electric maglev vehicle features an air duct connected to an air-cooled heat sink. When the HTS electric maglev vehicle is traveling at high speeds, the duct directs high-speed air to the heat sink, allowing the heat absorbed by the heat sink to be quickly exchanged with the surrounding air by the cryogenic refrigerator, saving energy. A circulating water pump is connected in series to the first or second air-cooled circulation pipeline to circulate the heat exchange medium between the heat sink and the heat exchanger, dissipating heat from the cryogenic refrigerator.

[0029] The water-cooling device has a water-cooling outlet and a water-cooling inlet. The water-cooling outlet is connected to the heat exchange inlet via a first water-cooling pipe, and the water-cooling inlet is connected to the heat exchange outlet via a second water-cooling pipe. The water-cooling device cools the heat exchange medium in the heat exchanger of the low-temperature refrigerator via the first and second water-cooling pipes, thereby dissipating heat from the low-temperature refrigerator. Heat generated by the low-temperature refrigerator is exchanged with the environment via the air-cooling heat sink and the water-cooling device, thereby achieving continuous operation of the refrigeration system. The control devices for the air-cooling heat sink and the water-cooling device can be located in the control room of the high-temperature superconducting electric maglev vehicle to facilitate control by personnel. Compared with the existing technology that uses liquid helium to cool high-temperature superconducting magnets, the refrigeration system provided by the present invention uses a low-temperature refrigerator to provide cold energy for the high-temperature superconducting magnets of the high-temperature superconducting electric maglev vehicle. The cooling cost is low, and there is no need to regularly replenish refrigerant to the refrigeration system. The ultra-low temperature environment required for the operation of the high-temperature superconducting magnets is maintained, and the lightweight design requirements of the vehicle are met. In addition, it is simple to install and easy to maintain, which facilitates the long-term travel of the high-temperature superconducting electric maglev vehicle.

[0030] The high-temperature superconducting electric maglev vehicle provided by the present invention comprises a high-temperature superconducting magnet and a refrigeration system. The high-temperature superconducting magnet is disposed within a refrigeration chamber, providing levitation and guidance for the high-temperature superconducting electric maglev vehicle. The refrigeration system is the aforementioned refrigeration system and is disposed outside the refrigeration chamber to provide cooling energy for the high-temperature superconducting magnet. Due to the aforementioned refrigeration system, the vehicle also possesses the aforementioned advantages, which will not be further elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of the installation structure of the refrigeration system disclosed in an embodiment of the present invention;

[0033] Figure 2 This is a schematic structural diagram of a first refrigeration system disclosed in an embodiment of the present invention;

[0034] Figure 3 This is a structural diagram of a second refrigeration system disclosed in an embodiment of the present invention.

[0035] Among them, 10 is a high-temperature superconducting magnet, 11 is a low-temperature refrigerator, 12 is a water-cooling device, and 13 is an air-cooling heat dissipation device;

[0036] 121 is the second water-cooling control valve, 122 is the first water-cooling control valve, 123 is the second water-cooling machine pipeline, 124 is the first water-cooling machine pipeline, 131 is the first air-cooling control valve, 132 is the second air-cooling control valve, 133 is the first heat exchange control valve, 134 is the second heat exchange control valve, 135 is the first air-cooling circulation pipeline, 136 is the second air-cooling circulation pipeline, 137 is the first heat exchange pipeline, and 138 is the second heat exchange pipeline. DETAILED DESCRIPTION

[0037] The core of the present invention is to disclose a refrigeration system to maintain the ultra-low temperature environment required for the operation of high-temperature superconducting magnets and meet the lightweight design requirements of vehicles.

[0038] Another core of the present invention is to disclose a high-temperature superconducting electric maglev vehicle.

[0039] The following embodiments are described with reference to the accompanying drawings. The embodiments described below do not limit the invention as set forth in the claims. Furthermore, the entire contents of the configurations shown in the following embodiments are not necessarily required to serve as solutions to the invention as set forth in the claims.

[0040] Combine Figure 2 The refrigeration system disclosed in the embodiment of the present invention is used to be installed in a high-temperature superconducting electric maglev vehicle, including a low-temperature refrigerator 11, an air-cooled heat dissipation device 13, a circulating water pump and a water chiller device 12.

[0041] The cryogenic refrigerator 11 continuously provides cooling energy for the HTS magnets of the HTS electric maglev vehicle. To dissipate heat and prevent excessive operating temperatures, the cryogenic refrigerator 11 includes a heat exchanger with a heat inlet and outlet. These inlet and outlet allow heat exchange medium to flow in and out, dissipating heat from the cryogenic refrigerator 11.

[0042] The air-cooled heat sink 13 has an air-cooled heat sink outlet and an air-cooled heat sink inlet. The air-cooled heat sink outlet is connected to the heat exchange inlet via a first air-cooled circulation pipeline 135, and the air-cooled heat sink inlet is connected to the heat exchange outlet via a second air-cooled circulation pipeline 136. The air-cooled heat sink 13 can cool the heat exchange medium in the heat exchanger of the low-temperature refrigerator 11 through the first air-cooled circulation pipeline 135 and the second air-cooled circulation pipeline 136 to dissipate heat from the low-temperature refrigerator 11. The high-temperature superconducting electric maglev vehicle has an air duct connected to the air-cooled heat sink 13. When the high-temperature superconducting electric maglev vehicle is traveling at a high speed, the air duct can guide the high-speed air flow to the air-cooled heat sink 13, and quickly exchange the heat absorbed by the air-cooled heat sink 13 at the low-temperature refrigerator 11 with the environment, thereby saving energy. The air-cooled heat sink 13 can also dissipate heat through a fan.

[0043] A circulating water pump (not shown) is connected in series to the first air-cooling circulation pipeline 135 or the second air-cooling circulation pipeline 136 to allow the heat exchange medium to circulate between the air-cooling heat sink 13 and the heat exchanger to dissipate heat from the low-temperature refrigerator 11 .

[0044] Since no high-speed wind is generated after the high-temperature superconducting electric maglev vehicle stops at a station, the heat dissipation of the air-cooled heat sink 13 will be affected. Based on this, the embodiment of the present invention further adds a water-cooling device 12.

[0045] The water-cooling device 12 has a water-cooling outlet and a water-cooling inlet. The water-cooling outlet is connected to the heat exchange inlet via a first water-cooling pipe 124, and the water-cooling inlet is connected to the heat exchange outlet via a second water-cooling pipe 123. The water-cooling device 12 cools the heat exchange medium in the heat exchanger of the low-temperature refrigerator 11 by exchanging heat between the first water-cooling pipe 124 and the second water-cooling pipe 123, thereby dissipating heat from the low-temperature refrigerator 11. When the high-temperature superconducting electric maglev vehicle is traveling at a low speed or stationary, the low wind speed prevents the air-cooling heat dissipation device 13 from using the high-speed wind to transfer heat to the low-temperature refrigerator 11, resulting in low heat transfer efficiency. In this case, the water-cooling device 12 can be used to transfer heat to the low-temperature refrigerator 11, providing the temperature required for its operation.

[0046] Those skilled in the art will appreciate that the heat exchange mediums used by the air-cooled heat sink 13 and the water-cooled chiller 12 can be the same or different. When the heat exchange mediums used by the air-cooled heat sink 13 and the water-cooled chiller 12 are the same (for example, both can be water), some of the heat exchange piping between the air-cooled heat sink 13 and the water-cooled chiller 12 and the heat exchanger can be shared. When the heat exchange piping between the air-cooled heat sink 13 and the water-cooled chiller 12 and the heat exchanger is independently provided, the heat exchange mediums can be different, and heat exchange can be achieved by contact between the heat exchange piping.

[0047] The heat generated by the refrigeration of the low-temperature refrigerator 11 is heat-exchanged with the environment through the air-cooled heat sink 13 and the water-cooled machine device 12, thereby realizing the continuous operation of the refrigeration system. And the control device of the air-cooled heat sink 13 and the water-cooled machine device 12 can be set in the control room of the high-temperature superconducting electric maglev vehicle to facilitate the control by the staff. Specifically, the control device can control the start and stop of the air-cooled heat sink 13 and the water-cooled machine device 12, and realize the control of the low-temperature refrigerator 11 by setting the automatic mode, manual mode, detection mode, fault mode, etc. This is the existing technology and will not be repeated here. The fault mode can be that when the air-cooled heat sink 13 fails, the water-cooled machine device 12 is used to dissipate the heat of the low-temperature refrigerator 11; or, when the water-cooled machine device 12 fails, the air-cooled heat sink 13 is used to dissipate the heat of the low-temperature refrigerator 11.

[0048] Compared with the prior art that uses liquid helium to cool high-temperature superconducting magnets, the refrigeration system disclosed in the embodiment of the present invention uses a low-temperature refrigerator 11 to provide cold energy for the high-temperature superconducting magnets of the high-temperature superconducting electric maglev vehicle. The cooling cost is low, and there is no need to regularly replenish refrigerant to the refrigeration system. The ultra-low temperature environment required for the operation of the high-temperature superconducting magnets is maintained, and the lightweight design requirements of the vehicle are met. In addition, the system is simple to install and easy to maintain, which facilitates the long-term travel of the high-temperature superconducting electric maglev vehicle.

[0049] In order to control the heat dissipation of the low-temperature refrigerator 11 through the water cooling machine device 12, a first water cooling control valve 122 for controlling the switch of the first water cooling machine pipeline 124 is provided on the first water cooling machine pipeline 124, and a second water cooling control valve 121 for controlling the switch of the second water cooling machine pipeline 123 is provided on the second water cooling machine pipeline 123.

[0050] By controlling the first water-cooling control valve 122 and the second water-cooling control valve 121 to open, the water-cooling device 12 can be connected to the low-temperature refrigerator 11. The heat generated by the low-temperature refrigerator 11 in the process of cooling the high-temperature superconducting magnet can be exchanged with the water-cooling device 12 through the first water-cooling machine pipeline 124 and the second water-cooling machine pipeline 123 to maintain the temperature required for the operation of the low-temperature refrigerator 11.

[0051] The first water-cooling control valve 122 and the second water-cooling control valve 121 may be cut-off valves having only two states, open and closed, and may further be flow regulating valves having a function of controlling the flow of heat exchange medium.

[0052] Combine Figure 2 and Figure 3 In order to control the heat dissipation of the low-temperature refrigerator 11 through the air-cooling heat dissipation device 13, a first air-cooling control valve 131 for controlling the switch of the first air-cooling circulation pipeline 135 is provided on the first air-cooling circulation pipeline 135, and a second air-cooling control valve 132 for controlling the switch of the second air-cooling circulation pipeline 136 is provided on the second air-cooling circulation pipeline 136.

[0053] By controlling the first air-cooling control valve 131 and the second air-cooling control valve 132 to be open, the air-cooling heat dissipation device 13 is connected to the low-temperature refrigerator 11. The heat generated by the low-temperature refrigerator 11 in the process of cooling the high-temperature superconducting magnet can be exchanged with the water-cooling device 12 through the first air-cooling circulation pipeline 135 and the second air-cooling circulation pipeline 136 to maintain the temperature required for the operation of the low-temperature refrigerator 11.

[0054] The first air-cooling control valve 131 and the second air-cooling control valve 132 may be cut-off valves having only two states, open and closed, and may further be flow regulating valves having a function of controlling the flow of heat exchange medium.

[0055] To improve the heat exchange efficiency and utilization of the water-cooling device 12 and the air-cooling heat sink 13, each of the water-cooling device 12 and the air-cooling heat sink 13 is connected to the heat exchangers of multiple low-temperature refrigerators 11, so that the water-cooling device 12 and the air-cooling heat sink 13 can simultaneously dissipate heat from multiple low-temperature refrigerators 11. To prevent possible interference between the low-temperature refrigerators 11 during the cooling process, the multiple low-temperature refrigerators 11 are connected in parallel. The parallel connection also facilitates the maintenance of a single low-temperature refrigerator 11.

[0056] In order to simplify the pipeline structure of the low-temperature refrigerator 11, a first heat exchange pipeline 137 is provided at the heat exchange inlet of the low-temperature refrigerator 11, and the first heat exchange pipeline 137 is connected with the first air-cooling circulation pipeline 135 and the first water-cooling machine pipeline 124, that is, the first air-cooling circulation pipeline 135 and the first water-cooling machine pipeline 124 are both connected with the heat exchange inlet through the first heat exchange pipeline 137, and a second heat exchange pipeline 138 is provided at the heat exchange outlet of the low-temperature refrigerator 11, and the second heat exchange pipeline 138 is connected with the second air-cooling circulation pipeline 136 and the second water-cooling machine pipeline 123, that is, the second air-cooling circulation pipeline 136 and the second water-cooling machine pipeline 123 are both connected with the heat exchange inlet through the second heat exchange pipeline 138. By setting the first heat exchange pipeline 137 and the second heat exchange pipeline 138, the air-cooled heat sink 13 and the water-cooled machine device 12 share part of the cooling pipeline of the low-temperature refrigerator 11, thereby simplifying the heat exchange structure of the refrigeration system. At this time, the heat exchange medium of the air-cooled heat sink 13 and the water-cooled machine device 12 can both be cooling water.

[0057] In a specific embodiment disclosed herein, the first heat exchange pipeline 137 is connected to the first air-cooling circulation pipeline 135 and the first water-cooling machine pipeline 124 via a first connector, and the second heat exchange pipeline is connected to the second air-cooling circulation pipeline 136 and the second water-cooling machine pipeline 123 via a second connector. The first connector and the second connector can both be tee joints.

[0058] It should be noted that the first connecting piece and the second connecting piece may also be other pipe joints, as long as they can achieve the function of mutual communication.

[0059] Since the air-cooled heat dissipation device 13 and the water-cooling device 12 can act on multiple low-temperature refrigerators 11 at the same time, in order to prevent possible interference between the multiple low-temperature refrigerators 11 during cooling, a first heat exchange control valve 133 for controlling the switch of the first heat exchange pipeline is provided on the first heat exchange pipeline 137 of the low-temperature refrigerator 11; a second heat exchange control valve 134 for controlling the switch of the second heat exchange pipeline 138 is provided on the second heat exchange pipeline 138 of the low-temperature refrigerator 11, that is, each low-temperature refrigerator 11 corresponds to a set of first heat exchange control valves 133 and second heat exchange control valves 134, which are used to realize separate control of each low-temperature refrigerator 11, so as to facilitate the inspection and maintenance of the low-temperature refrigerator 11.

[0060] In a specific embodiment disclosed herein, cryogenic refrigerator 11 is a Stirling refrigerator. The cold head of cryogenic refrigerator 11 is connected to a refrigeration chamber housing a high-temperature superconducting magnet. This provides cooling energy to the high-temperature superconducting magnet of the high-temperature superconducting electric maglev vehicle while maintaining a constant power supply, thereby maintaining the required low-temperature operating environment. Furthermore, the heat generated by cryogenic refrigerator 11 is continuously removed by an air-cooled heat sink 13 or a water-cooled chiller 12. This ensures that the entire refrigeration system maintains the required operating temperature of the high-temperature superconducting magnet, thereby providing uninterrupted traction and guidance for the high-temperature superconducting electric maglev vehicle and ensuring its normal operation.

[0061] The cryogenic refrigerator 11 can be sealed to the refrigeration chamber via a flange. Since the overall temperature of the refrigeration chamber is relatively low, the flange should be made of a low-temperature-resistant material and sealed to the refrigeration chamber via a seal. The seal can be a gasket, and the cryogenic refrigerator 11 can be a GM refrigerator.

[0062] The embodiment of the present invention also discloses a high temperature superconducting electric magnetic levitation vehicle, Figure 1 This high-temperature superconducting electric maglev vehicle includes a high-temperature superconducting magnet and a refrigeration system. The high-temperature superconducting magnet is located within a refrigeration chamber, providing levitation and guidance for the high-temperature superconducting electric maglev vehicle. The refrigeration system is the same as the one described above and is located outside the refrigeration chamber to provide cooling energy for the high-temperature superconducting magnet. The aforementioned refrigeration system also provides the aforementioned advantages, which will not be further elaborated here.

[0063] The terms "first," "second," and the like in the specification, claims, and accompanying drawings of the present invention are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements and may include steps or elements that are not listed.

[0064] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A refrigeration system, characterized in that: Used to be installed in high-temperature superconducting electric maglev vehicles, including: A low-temperature refrigerator (11) is used to provide cold energy for the high-temperature superconducting magnet of the high-temperature superconducting electric maglev vehicle, wherein the low-temperature refrigerator (11) has a heat exchanger, and the heat exchanger has a heat exchange inlet and a heat exchange outlet; The air-cooling heat sink (13) has an air-cooling heat sink outlet and an air-cooling heat sink inlet. The air-cooling heat sink outlet is connected to the heat exchange inlet via a first air-cooling circulation pipeline (135), and the air-cooling heat sink inlet is connected to the heat exchange outlet via a second air-cooling circulation pipeline (136). The high-temperature superconducting electric maglev vehicle has an air duct connected to the air-cooling heat sink (13). When the high-temperature superconducting electric maglev vehicle travels at a high speed, the air duct guides high-speed wind to the air-cooling heat sink (13), and enables the air-cooling heat sink (13) to quickly exchange heat absorbed by the air-cooling heat sink (13) at the low-temperature refrigerator (11) with the environment. a circulating water pump connected in series to the first air-cooling circulation pipeline (135) or the second air-cooling circulation pipeline (136) so as to allow the heat exchange medium to circulate between the air-cooling heat sink (13) and the heat exchanger; The water-cooling machine device (12) has a water-cooling machine outlet and a water-cooling machine inlet. The water-cooling machine outlet is connected to the heat exchange inlet through a first water-cooling machine pipeline (124), and the water-cooling machine inlet is connected to the heat exchange outlet through a second water-cooling machine pipeline (123). When the high-temperature superconducting electric maglev vehicle is traveling at a lower speed or is stationary, the low-temperature refrigerator (11) is heat-exchanged by the water-cooling machine device (12).

2. The refrigeration system according to claim 1, wherein: The first water-cooling machine pipeline (124) is provided with a first water-cooling control valve (122) for controlling the switch of the first water-cooling machine pipeline (124), and the second water-cooling machine pipeline (123) is provided with a second water-cooling control valve (121) for controlling the switch of the second water-cooling machine pipeline (123).

3. The refrigeration system according to claim 1, wherein: The first air-cooling circulation pipeline (135) is provided with a first air-cooling control valve (131) for controlling the switch of the first air-cooling circulation pipeline (135), and the second air-cooling circulation pipeline (136) is provided with a second air-cooling control valve (132) for controlling the switch of the second air-cooling circulation pipeline (136).

4. The refrigeration system according to claim 1, wherein: The water cooling device (12) and the air cooling heat dissipation device (13) are both connected to the heat exchangers of a plurality of the low-temperature refrigerators (11), and are connected in parallel with the heat exchangers of each of the low-temperature refrigerators (11).

5. The refrigeration system according to claim 4, wherein: The heat exchange inlet of the low-temperature refrigerator (11) is provided with a first heat exchange pipeline (137), and the first heat exchange pipeline (137) is connected to the first air-cooling circulation pipeline (135) and the first water-cooling machine pipeline (124); The heat exchange outlet of the low-temperature refrigerator (11) is provided with a second heat exchange pipeline (138), and the second heat exchange pipeline (138) is connected to both the second air-cooling circulation pipeline (136) and the second water-cooling machine pipeline (123).

6. The refrigeration system according to claim 5, wherein: The first heat exchange pipeline (137) is connected to the first air-cooling circulation pipeline (135) and the first water-cooling machine pipeline (124) via a first connecting piece; The second heat exchange pipeline (138) is connected to the second air-cooling circulation pipeline (136) and the second water-cooling machine pipeline (123) via a second connecting piece; The first connecting piece and the second connecting piece are both three-way joints.

7. The refrigeration system according to claim 5, wherein: The first heat exchange pipeline (137) of the low-temperature refrigerator (11) is provided with a first heat exchange control valve (133) for controlling the opening and closing of the first heat exchange pipeline (137); The second heat exchange pipeline (138) of the low-temperature refrigerator (11) is provided with a second heat exchange control valve (134) for controlling the opening and closing of the second heat exchange pipeline (138), so as to individually control each low-temperature refrigerator (11).

8. The refrigeration system according to claim 1, wherein: The low-temperature refrigerator (11) is a Stirling refrigerator, and a cold head of the low-temperature refrigerator (11) is used to communicate with a refrigeration cavity provided with the high-temperature superconducting magnet.

9. The refrigeration system according to claim 8, wherein: The low-temperature refrigerator (11) is sealed and connected to the refrigeration chamber via a flange.

10. A high-temperature superconducting electric maglev vehicle, characterized in that: include: A high-temperature superconducting magnet is disposed in the refrigeration cavity; The refrigeration system is the refrigeration system according to any one of claims 1 to 9, and is arranged outside the refrigeration cavity to provide cooling energy for the high-temperature superconducting magnet.

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