A modular cooling device and a magnetic levitation transportation system having the same

Abstract

The present invention provides a modular cooling device and a maglev transportation system having the same. The device includes an outer tank, an outer cylinder, an inner cylinder, a bottom plate, an annular top plate, a radial anti-vibration limit unit, a first vertical anti-vibration limit unit, a second vertical anti-vibration limit unit, and a cold storage unit. The outer cylinder, the inner cylinder, the bottom plate, and the annular top plate together constitute an annular sealed cavity filled with a cooling medium. A sealed space in a vacuum environment is formed between the annular sealed cavity and the outer tank. The radial anti-vibration limit unit is arranged between the outer tank and the outer cylinder. The first vertical anti-vibration limit unit is arranged between the outer tank and the bottom plate. The second vertical anti-vibration limit unit is arranged between the outer tank and the annular top plate. The cold storage unit is arranged on the inner side of the inner cylinder. The cold energy of the cold storage unit is transferred to the equipment to be cooled through the circulation of the cooling medium. The present invention can solve the technical problem that the cooling method in the prior art cannot provide sufficient cold energy for the equipment in a low pressure or vacuum environment.

Description

Technical Field

[0001] The present invention relates to the field of cooling technology, and in particular to a modular cooling device and a magnetic levitation transportation system having the same. Background Art

[0002] Currently, direct air cooling or water cooling is commonly used to cool operating equipment in normal pressure environments, and then air cooling is used to cool the liquid circulating medium. However, in low-pressure or vacuum environments, the air medium in the space is thin and the convective heat transfer effect is poor. Air cooling cannot provide sufficient cooling capacity to remove the large amount of heat generated by the equipment. The accumulated heat will cause the equipment to gradually heat up. When the operating temperature range of the equipment is exceeded, the equipment will overheat and even be damaged. In addition, with the emergence of vacuum tube maglev transportation systems, on-board equipment needs to operate stably in low-pressure environments. Therefore, higher requirements are placed on cooling equipment that can provide additional cooling capacity in air-deficient environments while having a higher degree of integration and facilitating on-board equipment installation.

[0003] Furthermore, the vacuum tube high-speed maglev system generates vibration and impact on onboard equipment during operation. Static refrigeration equipment is susceptible to damage due to localized stress concentration or structural fatigue caused by resonance or impact. The combined alternating electromagnetic and static magnetic fields within the vacuum tube maglev system further reduces the operational reliability of conventional refrigeration equipment, making it unsuitable for use in the vacuum tube high-speed maglev system. Summary of the Invention

[0004] The present invention provides a modular cooling device and a magnetic levitation transportation system having the same, which can solve the technical problem that the cooling method in the prior art cannot provide sufficient cooling capacity for equipment in a low pressure or vacuum environment.

[0005] According to one aspect of the present invention, a modular cooling device is provided, comprising an outer tank body and an outer cylinder body, an inner cylinder body, a bottom plate, an annular top plate, a radial anti-vibration limiting unit, a first vertical anti-vibration limiting unit, a second vertical anti-vibration limiting unit, and a cold storage unit arranged in the outer tank body;

[0006] The top of the outer tank body has a first through hole, a second through hole and a third through hole;

[0007] The outer cylinder is sleeved on the outside of the inner cylinder, the bottom plate is connected to the bottom of the inner cylinder and the outer cylinder, the inner ring of the annular top plate is connected to the top of the inner cylinder, and the outer ring of the annular top plate is connected to the top of the outer cylinder. The outer cylinder, the inner cylinder, the bottom plate and the annular top plate together constitute an annular sealed cavity, and the annular sealed cavity is filled with a cooling medium. A medium inlet and a medium outlet are provided on the annular sealed cavity, and the top of the inner cylinder is connected to the hole wall of the first through hole, so that a sealed space is formed between the annular sealed cavity and the outer tank body, and the sealed space is a vacuum environment;

[0008] The radial anti-vibration limiting unit is arranged between the outer tank body and the outer cylinder body;

[0009] The first vertical anti-vibration limiting unit is arranged between the outer tank body and the bottom plate;

[0010] The second vertical anti-vibration limiting unit is arranged between the outer tank body and the annular top plate;

[0011] The cold storage unit is arranged on the inner side of the inner cylinder;

[0012] One end of the first cooling pipe is connected to the medium inlet, and the other end is connected to the device to be cooled through the second through hole. One end of the second cooling pipe is connected to the medium outlet, and the other end is connected to the device to be cooled through the third through hole. The cold energy of the cold storage unit is transferred to the device to be cooled through the circulation of the cooling medium.

[0013] Preferably, the radial anti-vibration limit unit includes at least one radial anti-vibration limit support group. When the number of the radial anti-vibration limit support groups is greater than or equal to two, multiple radial anti-vibration limit support groups are arranged at axial intervals along the outer cylinder; each radial anti-vibration limit support group includes multiple radial anti-vibration limit support parts, and multiple radial anti-vibration limit support parts are arranged at circumferential intervals along the outer cylinder; each radial anti-vibration limit support part includes a radial anti-slip buffer layer, a radial vibration reduction layer and a radial support layer arranged in sequence, the radial anti-slip buffer layer is in contact with the outer cylinder, and the radial support layer is in contact with the outer tank body.

[0014] Preferably, the radial anti-slip buffer layer is in surface contact with the outer cylinder, and the radial support layer is in line contact with the outer tank body.

[0015] Preferably, the first vertical anti-vibration limiting unit includes a plurality of first vertical anti-vibration limiting support parts, and the plurality of first vertical anti-vibration limiting support parts are arranged at intervals along the circumference of the outer cylinder body, and each of the first vertical anti-vibration limiting support parts includes a first vertical anti-slip buffer layer, a first vertical support layer and a first vertical vibration damping layer arranged in sequence, the first vertical anti-slip buffer layer is in contact with the bottom plate, and the first vertical vibration damping layer is in contact with the outer tank body; the second vertical anti-vibration limiting unit includes a plurality of second vertical anti-vibration limiting support parts, and the plurality of second vertical anti-vibration limiting support parts are arranged at intervals along the circumference of the outer cylinder body, and each of the second vertical anti-vibration limiting support parts includes a second vertical anti-slip buffer layer, a second vertical support layer and a second vertical vibration damping layer arranged in sequence, the second vertical anti-slip buffer layer is in contact with the annular top plate, and the second vertical vibration damping layer is in contact with the outer tank body.

[0016] Preferably, the bottom plate is provided with a first groove, the number of the first grooves is the same as the number of the first vertical anti-vibration limiting support parts, the first vertical anti-slip buffer layer is an annular structure, the first vertical anti-slip buffer layer is arranged in the first groove, the first vertical support layer includes a rotating body structure with a busbar of "V" shape and a rotating body structure with a busbar of "L" shape, the rotating body structure with a busbar of "V" shape is arranged on the upper side of the rotating body structure with a busbar of "L" shape, the first vertical vibration damping layer is provided with a second groove, the bottom of the first vertical support layer is arranged in the second groove, and the top of the first vertical support layer is arranged in the first groove ; The annular top plate is provided with a third groove, the number of the third grooves is the same as the number of the second vertical anti-vibration limiting support parts, the second vertical anti-slip buffer layer is an annular structure, the second vertical anti-slip buffer layer is arranged in the third groove, the second vertical support layer includes a rotating body structure with a "V"-shaped busbar and a rotating body structure with an "L"-shaped busbar, the rotating body structure with a "V"-shaped busbar is arranged on the upper side of the rotating body structure with a "L"-shaped busbar, the second vertical vibration damping layer is provided with a fourth groove, the bottom of the second vertical support layer is arranged in the fourth groove, and the top of the second vertical support layer is arranged in the third groove.

[0017] Preferably, the radial support layer, the first vertical support layer and the second vertical support layer are all made of glass fiber; the radial vibration damping layer, the first vertical vibration damping layer and the second vertical vibration damping layer are all made of foam aluminum alloy; the radial anti-slip buffer layer, the first vertical anti-slip buffer layer and the second vertical anti-slip buffer layer are all made of polyurethane rubber.

[0018] Preferably, the device further comprises a plurality of cooling fins and a cooling film, wherein the plurality of cooling fins are arranged on the outer side wall of the inner cylinder at intervals along the circumference of the inner cylinder, and the cooling film is arranged on the inner side wall of the inner cylinder.

[0019] Preferably, each of the cooling fins is wavy along the axial direction of the inner cylinder.

[0020] Preferably, the top of the inner cylinder is provided with a plurality of clips distributed at intervals along its own circumference, and the outer wall of the cold storage unit is arranged at concave and convex intervals along its own circumference to form a first clip structure with a concave and convex segmented arc shape, and the inner wall of the inner cylinder is arranged at concave and convex intervals along its own circumference to form a second clip structure with a concave and convex segmented arc shape; after the cold storage unit is inserted into the inner side of the inner cylinder and rotated into place, the cold storage unit is fixed by the clips and the first clip structure, and the first clip structure and the second clip structure are used to achieve a one-to-one correspondence between the convex surface of the outer wall of the cold storage unit and the convex surface of the inner wall of the inner cylinder, and a one-to-one correspondence between the concave surface of the outer wall of the cold storage unit and the concave surface of the inner wall of the inner cylinder.

[0021] Preferably, the cold storage unit includes a shell, a cover, a cold conduction frame and a polymer compound cold storage material. The cover is arranged on the shell to form a cavity structure. The cold conduction frame is arranged in the cavity structure. The cold conduction frame is a concentric circle radial structure. The cavity structure is filled with the polymer compound cold storage material.

[0022] Preferably, the medium inlet is arranged at the upper part of the outer cylinder, and the medium outlet is arranged at the lower part of the outer cylinder.

[0023] According to another aspect of the present invention, a maglev transportation system is provided, comprising a maglev train, onboard equipment arranged in the maglev train, and any modular cooling device according to the above embodiments, wherein the modular cooling device is used to cool the onboard equipment.

[0024] The technical solution of the present invention is to use an annular sealed cavity composed of an outer cylinder, an inner cylinder, a bottom plate and an annular top plate to accommodate the cooling medium, utilize the phase change process of the cold storage material in the cold storage unit to store the cold in advance using a refrigeration device, and transfer the cold to the equipment that needs to be cooled through the circulation of the liquid cooling medium under low pressure or vacuum environment; the outer tank body and the annular sealed cavity together form a vacuum interlayer, which has a good insulation effect and reduces external heat leakage; at the same time, the radial anti-vibration limit unit is used to evenly distribute the lateral vibration and impact on the outer wall of the outer cylinder and convert it into an inward centripetal force, which can effectively suppress the left and right translation, up and down swing and radial breathing vibration of the outer cylinder in the annular sealed cavity, and maintain the structural stability of the annular sealed cavity in the radial direction; the two vertical anti-vibration limit units are used to effectively suppress the up and down displacement and top expansion of the annular sealed cavity, and maintain the structural stability of the annular sealed cavity in the vertical direction. The present invention not only reduces external conduction heat leakage, but also enhances the overall structural stability, and has a significant vibration reduction effect, reducing the impact of external vibration on the internal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are included to provide a further understanding of the embodiments of the present invention, constitute a part of the specification, illustrate the embodiments of the present invention, and together with the description, explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0026] Figure 1 An exploded schematic diagram of a modular cooling device provided according to an embodiment of the present invention is shown;

[0027] Figure 2 An overall schematic diagram of a modular cooling device provided according to an embodiment of the present invention is shown;

[0028] Figure 3 Shown Figure 2 A top view of the modular cooling unit;

[0029] Figure 4 Shown Figure 2 Longitudinal section of the modular cooling unit;

[0030] Figure 5 Shown Figure 2 Transverse cross-section of the modular cooling unit;

[0031] Figure 6 shows the main vibration characteristic modes of the annular sealing cavity provided by one embodiment of the present invention;

[0032] Figure 7Shown Figure 2 Spatial distribution diagram of the anti-vibration limit units of the modular cooling device;

[0033] Figure 8 Shown Figure 7 A three-dimensional schematic diagram of the radial anti-vibration limit unit in FIG.

[0034] Figure 9 Shown Figure 8 A top view of the radial anti-vibration limit unit in FIG.

[0035] Figure 10 Shown Figure 8 The main view of the radial anti-vibration limit unit;

[0036] Figure 11 Shown Figure 7 A three-dimensional schematic diagram of the vertical anti-vibration limit unit in FIG.

[0037] Figure 12 Shown Figure 11 The main view of the vertical anti-vibration limit unit in;

[0038] Figure 13 A three-dimensional schematic diagram of an annular sealed cavity including cooling fins provided in an embodiment of the present invention is shown;

[0039] Figure 14 Shown Figure 13 A transverse cross-sectional view of the annular sealing cavity in FIG.

[0040] Figure 15 Shown Figure 13 A three-dimensional schematic diagram of the inner cylinder and the cooling fins;

[0041] Figure 16 Shown Figure 2 Schematic diagram of the interface between the inner cylinder and the cold storage unit;

[0042] Figure 17 Shown Figure 16 A top view of the middle inner cylinder;

[0043] Figure 18 Shown Figure 16 A top view of the shell of the middle cold storage unit;

[0044] Figure 19 Shown Figure 2 Main view of the middle cold storage unit;

[0045] Figure 20 Shown Figure 2 Transverse cross-section of the middle cold storage unit;

[0046] Figure 21A schematic diagram of the use of a modular cooling device provided in one embodiment of the present invention is shown;

[0047] Figure 22 A schematic diagram of the use of a modular cooling device provided according to another embodiment of the present invention is shown.

[0048] The above drawings include the following reference numerals:

[0049] 10. Outer tank body; 20. Outer cylinder; 30. Inner cylinder; 40. Bottom plate; 50. Annular top plate;

[0050] 60. Radial anti-vibration limit support portion; 61. Radial anti-slip buffer layer;

[0051] 62. Radial vibration damping layer; 63. Radial support layer;

[0052] 70. First vertical anti-vibration limiting support portion; 71. First vertical anti-slip buffer layer;

[0053] 72. First vertical support layer; 73. First vertical vibration damping layer;

[0054] 80. Second vertical anti-vibration limiting support portion; 81. Second vertical anti-slip buffer layer;

[0055] 82. Second vertical support layer; 83. Second vertical vibration reduction layer;

[0056] 90. Cold storage unit; 91. Shell; 92. Cover; 93. Cooling frame;

[0057] 94. High polymer compound cold storage material; 95. Holder;

[0058] 100, cooling fin; 110, water inlet; 120, water outlet; 130, vacuum connection;

[0059] 140. Installation and fixing interface; 150. Valve; 160. Power pump; 170. Vehicle-mounted equipment. DETAILED DESCRIPTION

[0060] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0063] like Figure 1-Figure 5 As shown, the present invention provides a modular cooling device, which includes an outer tank body 10 and an outer cylinder body 20, an inner cylinder body 30, a bottom plate 40, an annular top plate 50, a radial anti-vibration limiting unit, a first vertical anti-vibration limiting unit, a second vertical anti-vibration limiting unit, and a cold storage unit 90 arranged in the outer tank body 10;

[0064] The top of the outer tank body 10 has a first through hole, a second through hole and a third through hole;

[0065] The outer cylinder 20 is sleeved on the outside of the inner cylinder 30, the bottom plate 40 is connected to the bottom of the inner cylinder 30 and the outer cylinder 20, the inner ring of the annular top plate 50 is connected to the top of the inner cylinder 30, and the outer ring of the annular top plate 50 is connected to the top of the outer cylinder 20. The outer cylinder 20, the inner cylinder 30, the bottom plate 40 and the annular top plate 50 together constitute an annular sealed cavity, and the annular sealed cavity is filled with a cooling medium. A medium inlet and a medium outlet are provided on the annular sealed cavity. The top of the inner cylinder 30 is connected to the hole wall of the first through hole, so that a sealed space is formed between the annular sealed cavity and the outer tank body 10, and the sealed space is a vacuum environment.

[0066] The radial anti-vibration limiting unit is arranged between the outer tank body 10 and the outer cylinder body 20;

[0067] The first vertical anti-vibration limiting unit is arranged between the outer tank body 10 and the bottom plate 40;

[0068] The second vertical anti-vibration limiting unit is arranged between the outer tank body 10 and the annular top plate 50;

[0069] The cold storage unit 90 is arranged inside the inner cylinder 30;

[0070] One end of the first cooling pipe is connected to the medium inlet, and the other end is connected to the equipment to be cooled through the second through hole. One end of the second cooling pipe is connected to the medium outlet, and the other end is connected to the equipment to be cooled through the third through hole. The cold energy of the cold storage unit 90 is transferred to the equipment to be cooled through the circulation of the cooling medium.

[0071] The present invention utilizes an annular sealed cavity composed of an outer cylinder 20, an inner cylinder 30, a bottom plate 40 and an annular top plate 50 to accommodate a cooling medium, utilizes the phase change process of the cold storage material in the cold storage unit 90 to store the cold in advance using a refrigeration device, and transfers the cold to the equipment that needs cooling through the circulation of the liquid cooling medium under a low pressure or vacuum environment; utilizes the outer tank body 10 and the annular sealed cavity to form a vacuum interlayer, which has a good thermal insulation effect and reduces external heat leakage; at the same time, utilizes a radial anti-vibration limiting unit to evenly distribute the surrounding lateral vibration and impact on the outer wall of the outer cylinder 20 and convert it into an inward centripetal force, which can effectively suppress the left and right translation, up and down swinging and radial breathing vibration of the outer cylinder 20 of the annular sealed cavity, and maintain the radial structural stability of the annular sealed cavity; utilizes two vertical anti-vibration limiting units, which can effectively suppress the up and down displacement and top expansion of the annular sealed cavity, and maintain the vertical structural stability of the annular sealed cavity. The present invention not only reduces external conduction heat leakage, but also enhances the overall structural stability, and at the same time has a significant vibration reduction effect, reducing the influence of external vibration on the internal structure.

[0072] In the present invention, the vibration modes corresponding to the characteristic frequencies of the annular sealing cavity under random vibration mainly include left and right translation vibration, up and down swing vibration, upper swing vibration, radial breathing vibration of the outer cylinder 20, up and down displacement vibration and top expansion vibration, such as Figure 6 To prevent the annular sealed cavity from vibrating and causing structural resonance due to the high-speed operation of the maglev train, which could lead to structural fatigue fracture and damage caused by collision between the outer tank body 10 and the outer cylinder body 20, a radial anti-vibration limiter and two vertical anti-vibration limiters are provided between the annular sealed cavity and the outer tank body 10, thereby improving the compactness and stability of the overall structure of the annular sealed cavity and the outer tank body 10.

[0073] Specifically, according to the vibration characteristics of the annular sealing cavity, the following can be adopted: Figure 7 The spatial distribution scheme of the anti-vibration limit units is shown.

[0074] According to one embodiment of the present invention, the radial anti-vibration limit unit includes at least one radial anti-vibration limit support group. When the number of the radial anti-vibration limit support groups is greater than or equal to two, multiple radial anti-vibration limit support groups are arranged at axial intervals along the outer cylinder 20; each radial anti-vibration limit support group includes multiple radial anti-vibration limit support parts 60, and multiple radial anti-vibration limit support parts 60 are arranged at circumferential intervals along the outer cylinder 20.

[0075] Specifically, in Figure 7 In the embodiment, a radial anti-vibration limit support group is provided between the upper and lower portions of the outer cylinder 20 and the outer tank body 10. Each radial anti-vibration limit support group includes four radial anti-vibration limit support portions 60 arranged at equal intervals along the circumference of the outer cylinder 20. These groups can effectively suppress the left-right translation, up-and-down swinging of the annular sealing cavity, and the radial breathing vibration of the outer cylinder 20. When a lateral impact occurs, the radial anti-vibration limit support portions 60 can quickly and evenly disperse the external impact force around the circumference of the outer cylinder 20, weakening the impact of the lateral impact on the outer cylinder 20 and maintaining the structural stability of the annular sealing cavity in the radial direction.

[0076] Furthermore, if Figures 8-10 As shown, each of the radial anti-vibration limiting support parts 60 includes a radial anti-slip buffer layer 61, a radial vibration reduction layer 62 and a radial support layer 63 arranged in sequence. The radial anti-slip buffer layer 61 is in contact with the outer cylinder 20, and the radial support layer 63 is in contact with the outer tank body 10.

[0077] Furthermore, the outer tank body 10 is a rectangular parallelepiped structure, each radial anti-slip buffer layer 61 is designed with a circular arc segment structure, and each radial support layer 63 is designed with a right-angled triangle structure. The two right-angled sides form a right-angle structure that stably matches the right-angle structure of the inner wall of the outer tank body 10. At the same time, this structure is also convenient for layout, arrangement and modularization.

[0078] In this embodiment, the radial support layer 63 is made of fiberglass, which features low thermal conductivity and excellent compressive and tensile strength. A triangular hollow structure can be used in the center of the radial support layer 63. This structure maintains structural strength while reducing support weight and extending the heat conduction path. This structure evenly transfers impact forces and vibrations perpendicular to the sidewalls of the outer tank 10 to the curved surface in contact with the outer cylinder 20, ensuring uniform force distribution perpendicular to the circumference of the outer cylinder 20 and preventing stress concentration on the outer cylinder 20 wall. The radial vibration damping layer 62 is made of foamed aluminum alloy, which is lightweight, has a density 0.1 to 0.4 times that of metallic aluminum, a flexural stiffness 1.5 times that of steel, and a thermal conductivity only 1 / 30 to 1 / 80 that of aluminum. This ensures that the radial anti-vibration limiter support 60 remains lightweight while maintaining structural stability and minimizing heat leakage. In the event of an impact, the foamed aluminum alloy's high damping properties can absorb some of the external impact. The material of the radial anti-slip buffer layer 61 is polyurethane rubber, which is an elastomer, soft and easy to deform. Under external force extrusion, it can further release the impact force through deformation, thereby avoiding hard contact between the radial anti-vibration limit support part 60 and the outer cylinder 20. Under external force extrusion, the polyurethane rubber layer will increase the contact area with the outer cylinder 20 through deformation, thereby increasing the friction force, avoiding slippage between the outer cylinder 20 and the radial anti-vibration limit support part 60, and inhibiting the outer cylinder 20 from twisting during vibration or impact.

[0079] According to one embodiment of the present invention, the radial anti-slip buffer layer 61 is in surface contact with the outer cylinder 20 to increase friction; the radial support layer 63 is in line contact with the outer tank body 10, and by reducing the contact surface, the conductive heat leakage of the radial anti-vibration limiting support part 60 is further reduced.

[0080] Specifically, the contact surface between the radial anti-vibration limiting support portion 60 and the outer tank body 10 can be subjected to a circular polishing process, such as Figure 10 As shown, the radial support layer 63 and the outer tank body 10 are in line contact.

[0081] According to one embodiment of the present invention, Figure 7 As shown, the first vertical anti-vibration limiting unit includes a plurality of first vertical anti-vibration limiting support portions 70, which are spaced apart along the circumference of the outer cylinder 20. The second vertical anti-vibration limiting unit includes a plurality of second vertical anti-vibration limiting support portions 80, which are spaced apart along the circumference of the outer cylinder 20.

[0082] Specifically, in Figure 7In the figure, four first vertical anti-vibration limiting support parts 70 are arranged at equal intervals along the circumference of the outer cylinder 20 between the bottom plate 40 and the outer tank body 10, and four second vertical anti-vibration limiting support parts 80 are arranged at equal intervals along the circumference of the outer cylinder 20 between the annular top plate 50 and the outer tank body 10; through the coordinated use of the first vertical anti-vibration limiting support parts 70 and the second vertical anti-vibration limiting support parts 80, the up and down displacement and top expansion of the annular sealing cavity can be effectively suppressed, thereby maintaining the vertical structural stability of the annular sealing cavity.

[0083] Furthermore, if Figure 11-12 As shown, each of the first vertical anti-vibration limiting support parts 70 includes a first vertical anti-slip buffer layer 71, a first vertical support layer 72 and a first vertical vibration damping layer 73 arranged in sequence, the first vertical anti-slip buffer layer 71 is in contact with the bottom plate 40, and the first vertical vibration damping layer 73 is in contact with the outer tank body 10; each of the second vertical anti-vibration limiting support parts 80 includes a second vertical anti-slip buffer layer 81, a second vertical support layer 82 and a second vertical vibration damping layer 83 arranged in sequence, the second vertical anti-slip buffer layer 81 is in contact with the annular top plate 50, and the second vertical vibration damping layer 83 is in contact with the outer tank body 10.

[0084] According to one embodiment of the present invention, Figure 12 As shown, the bottom plate 40 is provided with a first groove, the number of the first grooves is the same as the number of the first vertical anti-vibration limiting support parts 70, the first vertical anti-slip buffer layer 71 is an annular structure, the first vertical anti-slip buffer layer 71 is arranged in the first groove, the first vertical support layer 72 includes a rotating body structure with a busbar being a "V" shape and a rotating body structure with a busbar being an "L" shape, the rotating body structure with a busbar being a "V" shape is arranged on the upper side of the rotating body structure with a busbar being an "L" shape, the first vertical vibration damping layer 73 is provided with a second groove, the bottom of the first vertical support layer 72 is arranged in the second groove, and the top of the first vertical support layer 72 is arranged in the first groove ; The annular top plate 50 is provided with a third groove, and the number of the third groove is the same as the number of the second vertical anti-vibration limiting support parts 80. The second vertical anti-slip buffer layer 81 is an annular structure, and the second vertical anti-slip buffer layer 81 is arranged in the third groove. The second vertical support layer 82 includes a rotating body structure with a busbar in a "V" shape and a rotating body structure with a busbar in an "L" shape. The rotating body structure with a busbar in a "V" shape is arranged on the upper side of the rotating body structure with a busbar in an "L" shape. The second vertical vibration damping layer 83 is provided with a fourth groove, the bottom of the second vertical support layer 82 is arranged in the fourth groove, and the top of the second vertical support layer 82 is arranged in the third groove.

[0085] By designing the shape of the vertical support layer, the heat conduction path is extended, reducing heat leakage between the outer tank body 10 and the bottom plate 40 and annular top plate 50. The "V" shape angle can be set to 45 degrees to increase the tensile and compressive strength of the vertical anti-vibration limit support portion.

[0086] In this embodiment, the first vertical support layer 72 and the second vertical support layer 82 are both made of glass fiber, which has good tensile and compressive strength but weak shear resistance. The "V"-shaped rotating body structure can extend the heat conduction path while avoiding shear force in the vertical direction, thereby improving the reliability of the support structure. The first vertical vibration damping layer 73 and the second vertical vibration damping layer 83 are both made of foamed aluminum alloy. On the one hand, the high damping properties of the foamed aluminum alloy are used to effectively absorb the impact force transmitted inward from the outer tank body 10. On the other hand, its good rigidity properties can be used to install and fix the vertical support layer. The first vertical anti-skid buffer layer 71 and the second vertical anti-skid buffer layer 81 are both made of polyurethane rubber, which can further absorb external vibration and impact by deformation. The deformation of this material can release local stress, make the contact force uniform, and avoid local stress concentration.

[0087] According to one embodiment of the present invention, Figure 13-15 As shown, the device also includes a plurality of cooling fins 100 and a cooling film. The plurality of cooling fins 100 are arranged at intervals along the circumference of the inner cylinder 30 on the outer wall of the inner cylinder 30. They can exchange heat with the cooling medium in the horizontal direction, fully releasing the cold stored in the cold storage unit 90 to cool the cooling medium. The cooling film is arranged on the inner wall of the inner cylinder 30, thereby improving heat exchange efficiency. The inner cylinder 30 and the cooling fins 100 are both made of a high-strength and high-heat-exchange-rate cooling material.

[0088] Specifically, the cooling fins 100 can be made of aluminum alloy, which has the advantages of a light structure and good cooling effect. To achieve a good cooling effect and avoid structural complexity, the number of cooling fins 100 can be set to 8, and the angle between each two adjacent cooling fins 100 is 45 degrees. The cooling film can be copper-plated.

[0089] Furthermore, each of the cooling fins 100 is wavy along the axial direction of the inner cylinder 30, which can effectively increase the contact surface between the cooling medium and the cooling fin 100 when the cooling medium flows vertically. At the same time, the higher temperature return water will slow down the flow rate near the surface of the wavy structure when flowing from top to bottom, prolonging the heat exchange process between the cooling medium and the cooling fin 100. Compared with the flat plate structure, the heat exchange efficiency of the cooling fin 100 can be further improved. Moreover, the wavy structure also improves the vibration resistance of the cooling fin 100. Under vibration and impact environments, the general flat fin structure is free and unconstrained at one end, and the overall characteristic frequency of this thin-walled structure is low. It is easy to resonate with the vibration caused by the use environment, causing metal fatigue and deformation or even fracture and damage. Under the same constraint relationship, the wavy thin-walled structure can increase the characteristic frequency by more than 5 times without increasing the wall thickness, so that the cooling fin 100 has good structural rigidity and is not easily deformed under vibration and impact environments, significantly improving the structural reliability of the cooling fin 100.

[0090] According to one embodiment of the present invention, Figure 16-Figure 18 As shown, the top of the inner cylinder 30 is provided with a plurality of clips distributed along its own circumference, and the outer wall of the cold storage unit 90 is arranged at concave and convex intervals along its own circumference to form a first clip structure with a concave and convex segmented arc shape, and the inner wall of the inner cylinder 30 is arranged at concave and convex intervals along its own circumference to form a second clip structure with a concave and convex segmented arc shape; after the cold storage unit 90 is inserted into the inner side of the inner cylinder 30 and rotated into place, the cold storage unit 90 is fixed by the clips and the first clip structure, and the first clip structure and the second clip structure are used to achieve a one-to-one correspondence between the convex surface of the outer wall of the cold storage unit 90 and the convex surface of the inner wall of the inner cylinder 30, and a one-to-one correspondence between the concave surface of the outer wall of the cold storage unit 90 and the concave surface of the inner wall of the inner cylinder 30.

[0091] In this embodiment, the angle corresponding to each segmented arc is 45°. During use, the cold storage unit 90, initially at a temperature below 0°C, is inserted into the inner side of the inner cylinder 30 at room temperature. Due to the low temperature, the cold storage unit 90 contracts and deforms significantly, while the second slot structure of the inner cylinder 30 at room temperature deforms less, forming a clearance fit that facilitates installation. As the temperature of the cold storage unit 90 rises and the temperature of the inner cylinder 30 decreases, the inner cylinder 30 contracts to form an interference fit, and the second slot structure locks the cold storage unit 90 inward, preventing it from loosening and effectively preventing it from falling off due to vibration. When the cold storage unit's cooling capacity is gradually released and its temperature reaches the same level as that of the inner cylinder 30, the deformation of the cold storage unit 90 and the slot of the inner cylinder 30 are essentially the same, allowing for smooth removal, thereby achieving the automatic locking and unlocking functions of the cold storage unit 90.

[0092] According to one embodiment of the present invention, Figure 19-20As shown, the cold storage unit 90 includes a shell 91, a cover 92, a cold conduction frame 93 and a polymer compound cold storage material 94. The cover 92 is covered on the shell 91 to form a cavity structure. The cold conduction frame 93 is arranged in the cavity structure. The cold conduction frame 93 is a concentric circle radial structure. The cavity structure is filled with the polymer compound cold storage material 94.

[0093] In order to facilitate the insertion and removal of the cold storage unit 90 , the cold storage unit 90 further includes a holder 95 , which is provided on the cover 92 .

[0094] In this embodiment, the provision of the cooling frame 93 has the following beneficial effects:

[0095] 1. It has a good supporting effect on the cavity wall of the cold storage unit 90, making it less likely to deform under vibration and impact.

[0096] 2. Conventional polymer compounds are gel-like substances with poor rigidity. If the entire inner cavity of the cold storage unit 90 is filled with the gel-like polymer compound cold storage material 94, then under a vibration environment, the center of mass of the structure will shift back and forth under vibration, and the installation joint between the cold storage unit 90 and the inner cylinder 30 will easily loosen. On the one hand, this will lead to a blocked path for the cold storage material to release cold through the inner cylinder 30, resulting in reduced efficiency. On the other hand, it may cause the cold storage unit 90 and the inner cylinder 30 to collide and be damaged in disguised form. Adding a cold conduction skeleton 93 structure to divide the polymer compound cold storage material 94 into multiple small sub-units, this cold storage hybrid method can effectively suppress the reciprocating shaking of the gel-like cold storage material under vibration, avoid the shift of the center of mass of the entire cold storage unit 90, and improve the overall structural stability of the cold storage unit 90.

[0097] 3. The polymer compound cold storage material 94 has a strong cold storage capacity but a relatively weak thermal conductivity. Combining the polymer compound cold storage material 94 with the cold conduction skeleton 93 structure can make the temperature distribution of the inner cavity of the cold storage unit 90 more uniform, and evenly release the cold stored in the central part away from the outer wall of the cold storage unit 90, avoiding the decrease in cold release efficiency due to uneven temperature distribution of the cold storage material.

[0098] In this embodiment, the housing 91 can be made of a high-strength aluminum alloy, with its outer surface copper-plated to improve heat exchange efficiency with the cooling medium. The cooling frame 93 can be made of oxygen-free copper. The polymer compound cold storage material 94 can be sodium hydroxymethyl cellulose, sodium polyacrylate, or polyvinyl alcohol.

[0099] According to one embodiment of the present invention, due to the natural distribution of hot and cold water from top to bottom with temperature, the medium inlet is arranged at the upper part of the outer cylinder 20, and the medium outlet is arranged at the lower part of the outer cylinder 20; thereby, when circulating under the drive of the external power pump 160, the outlet liquid temperature of the annular sealing cavity can always be kept lower than the inlet liquid temperature.

[0100] The cooling medium may be deionized water, which can be ensured to maintain a liquid state below 0° C. and has good fluidity.

[0101] In addition, two medium inlets and two medium outlets are provided, one set of medium inlets and medium outlets is used for circulating deionized water, that is, cooling water, and the other set of medium inlets and medium outlets is used for replenishing cooling water.

[0102] In summary, the modular cooling device of the present invention has the following beneficial effects:

[0103] 1. No air cooling is required. The phase change process of the material in the cold storage unit 90 can be used to store the cold energy in advance using a refrigeration device, and the cold energy can be brought to the equipment that needs cooling through a liquid circulating medium under a low pressure or vacuum environment.

[0104] 2. There is a limit and quick plug-in structure between the cold storage unit 90 and the inner cylinder 30. When the cold energy is fully released, the cold storage unit 90 can be quickly replaced to provide cold energy to the equipment again and maintain stable operation of the equipment without consuming additional electricity from the vehicle power supply.

[0105] 3. A low heat leakage, anti-vibration, and limited support structure is adopted inside the cooling device. While reducing external conduction heat leakage, it enhances the overall structural stability and has a significant vibration reduction effect, reducing the impact of external vibration on the internal structure. Compared with the conventional straight-plate cooling fins 100, the wavy radiation cooling structure design of the present invention can not only increase the cooling heat exchange surface, but also increase the structural characteristic frequency by nearly 5 times while ensuring that the material does not thicken. The structural rigidity is better, it is not easy to resonate with external vibrations, and has better structural stability.

[0106] 4. The design of the cold storage material in the inner cavity of the cold storage unit 90 adopts a combination of a vibration-damping cold conduction skeleton 93 structure and a polymer compound cold storage material 94 sub-unit. The structure has good structural integrity, high center of mass stability, high structural rigidity, and uniform internal temperature distribution. The cold energy in the inner cavity of the cold storage unit 90 can be uniformly and continuously released to the circulating medium through the wavy radiation cold conduction structure.

[0107] 5. The entire cooling device has a compact structure and takes into account both cooling and vibration resistance requirements. It is easy to operate and does not require additional on-board electrical cooling equipment. It has low electromagnetic sensitivity and has higher stability and reliability in vibration and shock environments and load electromagnetic environments, further improving the stability of the cooling device under the alternating magnetic field harmonics of the maglev transportation system.

[0108] 6. The cooling device can be designed as a modular standard component, and the structure can be expanded according to the heat generation, continuous operation time and cooling capacity of the cold storage unit 90 of the vehicle-mounted equipment 170 in a low vacuum environment to form a cooling device array.

[0109] The present invention also provides a maglev transportation system, which includes a maglev train, an onboard device 170 arranged in the maglev train, and any modular cooling device in the above embodiments, wherein the modular cooling device is used to cool the onboard device 170.

[0110] An embodiment of the magnetic levitation transportation system of the present invention is described in detail below. Figure 21 shown.

[0111] In this embodiment, the modular cooling device's outer tank 10 is equipped with four mounting ports 140 at its bottom. Each port has a 16mm diameter through-hole, through which bolts pass to secure it to the maglev train body. A vacuum port 130 is located at the top of the outer tank 10, connected via piping to a vacuum pumping unit. This pumping operation maintains a vacuum between the outer tank 10 and the annular sealed cavity. Manufactured from a high-strength, lightweight 6061 aluminum alloy, the outer tank 10 provides a vacuum environment, support, and protection for the cooling device's internal components.

[0112] In this embodiment, the modular cooling device is equipped with two sets of water inlets and outlets 120. The left inlet and outlet 120 is equipped with a valve 150 for replenishing deionized water into the annular sealed cavity. The right inlet and outlet 120 is the deionized water circulation port. The outlet 120 is connected to a power pump 160, which in turn connects to the cooling water inlet of the onboard device 170. The water inlet 110 of the modular cooling device is connected to the water outlet 120 of the onboard device 170. The power pump 160 drives the cooling water to circulate between the onboard device 170 and the modular cooling device.

[0113] In this embodiment, the cold storage unit 90 serves as the cold source for cooling the circulating water. Before use, it must be placed in a refrigeration unit for cooling. Once cooled to the target temperature, it is installed inside the inner cylinder 30 to release the stored cold energy into the deionized water, thereby cooling the circulating water. If the circulating water temperature becomes too high, the cold storage unit 90 can be replaced at a refueling station to maintain the low temperature of the cooling circulating water. The cooling device of the present invention does not require additional on-board electrical refrigeration equipment, making it easy to operate and offering enhanced stability and reliability in electromagnetic environments.

[0114] Another embodiment of the magnetic levitation transportation system of the present invention is described in detail below. Figure 22 shown.

[0115] Without replacing the cold storage unit 90, the cold storage capacity of each cooling device is fixed. The number of cooling devices can be determined based on the heat generation and continuous operating time of the vehicle-mounted equipment 170 in a low vacuum environment. These cooling devices are then connected in series via water inlet and outlet pipes connected to the two sets of water inlets and outlets 120 to form a cooling device array to meet the cooling needs of the equipment in a vacuum environment.

[0116] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0117] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0118] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0119] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A modular cooling device, characterized in that: The device comprises an outer tank body (10), an outer cylinder body (20), an inner cylinder body (30), a bottom plate (40), an annular top plate (50), a radial anti-vibration limiting unit, a first vertical anti-vibration limiting unit, a second vertical anti-vibration limiting unit, and a cold storage unit (90) arranged in the outer tank body (10); The top of the outer tank body (10) has a first through hole, a second through hole and a third through hole; The outer cylinder (20) is sleeved on the outer side of the inner cylinder (30), the bottom plate (40) is connected to the bottom of the inner cylinder (30) and the outer cylinder (20), the inner ring of the annular top plate (50) is connected to the top of the inner cylinder (30), and the outer ring of the annular top plate (50) is connected to the top of the outer cylinder (20). The outer cylinder (20), the inner cylinder (30), the bottom plate (40) and the annular top plate (50) together constitute an annular sealed cavity, the annular sealed cavity is filled with a cooling medium, and a medium inlet and a medium outlet are provided on the annular sealed cavity. The top of the inner cylinder (30) is connected to the hole wall of the first through hole, so that a sealed space is formed between the annular sealed cavity and the outer tank body (10), and the sealed space is a vacuum environment. The radial anti-vibration limiting unit is arranged between the outer tank body (10) and the outer cylinder body (20); The first vertical anti-vibration limiting unit is arranged between the outer tank body (10) and the bottom plate (40); The second vertical anti-vibration limiting unit is arranged between the outer tank body (10) and the annular top plate (50); The cold storage unit (90) is arranged inside the inner cylinder (30); One end of the first cooling pipe is connected to the medium inlet, and the other end is connected to the device to be cooled through the second through hole; one end of the second cooling pipe is connected to the medium outlet, and the other end is connected to the device to be cooled through the third through hole, and the cold energy of the cold storage unit (90) is transferred to the device to be cooled through the circulation of the cooling medium; The radial anti-vibration limiting unit includes at least one radial anti-vibration limiting support group. When the number of the radial anti-vibration limiting support groups is greater than or equal to two, a plurality of the radial anti-vibration limiting support groups are arranged at intervals along the axial direction of the outer cylinder (20); each of the radial anti-vibration limiting support groups includes a plurality of radial anti-vibration limiting support portions (60), and the plurality of radial anti-vibration limiting support portions (60) are arranged at intervals along the circumference of the outer cylinder (20); each of the radial anti-vibration limiting support portions (60) includes a radial anti-slip buffer layer (61), a radial vibration reduction layer (62), and a radial support layer (63) arranged in sequence. The radial anti-slip buffer layer (61) is in contact with the outer cylinder (20), and the radial support layer (63) is in contact with the outer tank body (10); The medium inlet is arranged at the upper part of the outer cylinder (20), and the medium outlet is arranged at the lower part of the outer cylinder (20).

2. The device according to claim 1, characterized in that The radial anti-slip buffer layer (61) is in surface contact with the outer cylinder (20), and the radial support layer (63) is in line contact with the outer tank body (10).

3. The device according to claim 1, characterized in that The first vertical anti-vibration limiting unit comprises a plurality of first vertical anti-vibration limiting support portions (70), the plurality of first vertical anti-vibration limiting support portions (70) being arranged at intervals along the circumference of the outer cylinder (20), each of the first vertical anti-vibration limiting support portions (70) comprising a first vertical anti-slip buffer layer (71), a first vertical support layer (72) and a first vertical vibration reduction layer (73) being arranged in sequence, the first vertical anti-slip buffer layer (71) being in contact with the bottom plate (40), and the first vertical vibration reduction layer (73) being in contact with the outer tank body (10); The second vertical anti-vibration limiting unit includes a plurality of second vertical anti-vibration limiting support parts (80), and the plurality of second vertical anti-vibration limiting support parts (80) are arranged at intervals along the circumference of the outer cylinder (20). Each of the second vertical anti-vibration limiting support parts (80) includes a second vertical anti-slip buffer layer (81), a second vertical support layer (82) and a second vertical vibration reduction layer (83) arranged in sequence. The second vertical anti-slip buffer layer (81) is in contact with the annular top plate (50), and the second vertical vibration reduction layer (83) is in contact with the outer tank body (10).

4. The device according to claim 3, characterized in that The bottom plate (40) is provided with a first groove, the number of the first grooves is the same as the number of the first vertical anti-vibration limiting support parts (70), the first vertical anti-slip buffer layer (71) is an annular structure, the first vertical anti-slip buffer layer (71) is arranged in the first groove, the first vertical support layer (72) includes a rotating body structure with a "V"-shaped busbar and a rotating body structure with a "L"-shaped busbar, the rotating body structure with a "V"-shaped busbar is arranged on the upper side of the rotating body structure with a "L"-shaped busbar, the first vertical vibration reduction layer (73) is provided with a second groove, the bottom of the first vertical support layer (72) is arranged in the second groove, and the top of the first vertical support layer (72) is arranged in the first groove; The annular top plate (50) is provided with a third groove, the number of the third groove is the same as the number of the second vertical anti-vibration limiting support portion (80), the second vertical anti-slip buffer layer (81) is an annular structure, the second vertical anti-slip buffer layer (81) is arranged in the third groove, the second vertical support layer (82) includes a rotating body structure with a "V"-shaped busbar and a rotating body structure with a "L"-shaped busbar, the rotating body structure with a "V"-shaped busbar is arranged on the upper side of the rotating body structure with a "L"-shaped busbar, the second vertical vibration reduction layer (83) is provided with a fourth groove, the bottom of the second vertical support layer (82) is arranged in the fourth groove, and the top of the second vertical support layer (82) is arranged in the third groove.

5. The device according to claim 3, characterized in that The radial support layer (63), the first vertical support layer (72) and the second vertical support layer (82) are all made of glass fiber; the radial vibration damping layer (62), the first vertical vibration damping layer (73) and the second vertical vibration damping layer (83) are all made of foamed aluminum alloy; the radial anti-skid buffer layer (61), the first vertical anti-skid buffer layer (71) and the second vertical anti-skid buffer layer (81) are all made of polyurethane rubber.

6. The device according to claim 1, characterized in that The device further comprises a plurality of cooling fins (100) and a cooling film, wherein the plurality of cooling fins (100) are arranged on the outer wall of the inner cylinder (30) at intervals along the circumference of the inner cylinder (30), and the cooling film is arranged on the inner wall of the inner cylinder (30).

7. The device according to claim 6, characterized in that Each of the cooling fins (100) is wavy in shape along the axial direction of the inner cylinder (30).

8. The device according to claim 1, characterized in that The top of the inner cylinder (30) is provided with a plurality of clips spaced along its own circumference, the outer wall of the cold storage unit (90) is arranged at intervals along its own circumference to form a first slot structure with a concave-convex segmented arc shape, and the inner wall of the inner cylinder (30) is arranged at intervals along its own circumference to form a second slot structure with a concave-convex segmented arc shape; after the cold storage unit (90) is inserted into the inner side of the inner cylinder (30) and rotated into place, the cold storage unit (90) is fixed by the clips and the first slot structure, and the convex surface of the outer wall of the cold storage unit (90) corresponds to the convex surface of the inner wall of the inner cylinder (30) one-to-one, and the concave surface of the outer wall of the cold storage unit (90) corresponds to the concave surface of the inner wall of the inner cylinder (30) one-to-one.

9. The device according to claim 1, characterized in that The cold storage unit (90) comprises a shell (91), a cover (92), a cold conduction frame (93) and a high polymer compound cold storage material (94); the cover (92) is arranged on the shell (91) to form a cavity structure; the cold conduction frame (93) is arranged in the cavity structure; the cold conduction frame (93) is a concentric circle radial structure; and the cavity structure is filled with the high polymer compound cold storage material (94).

10. A magnetic levitation transportation system, characterized in that: The system comprises a maglev train and onboard equipment (170) arranged in the maglev train and a modular cooling device according to any one of claims 1 to 9, wherein the modular cooling device is used for cooling the onboard equipment (170).

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