Heat preservation box for high-pressure hydrogen cylinder

Abstract

The utility model belongs to the field of heat preservation boxes, and discloses a heat preservation box for a high-pressure hydrogen cylinder. Comprising a box body, an inner container and a cooling unit, the inner container is fixedly installed in the box body, and the cooling unit is fixedly installed on one side of the box body. An impeller hole is formed in the side, close to the cooling unit, of the inner container, the cooling unit comprises an impeller, an impeller shaft and a circulating cooling device, the circulating cooling device is fixedly installed on one side of the box body, the impeller shaft penetrates through one end of the impeller hole to be fixedly connected with the impeller, the other end of the impeller shaft is fixedly connected with the circulating cooling device, and the impeller is arranged in the inner container. The impeller in the inner container enables liquid nitrogen in the inner container to flow continuously, the temperature is kept constant, the container wall, making contact with the middle of the high-pressure hydrogen cylinder, of the inner container is thin, the high-pressure hydrogen cylinder can be well cooled, and the technical problems that in the prior art, the pressure of high-pressure hydrogen stored in the high-pressure hydrogen cylinder is large, and the safety performance is difficult to guarantee are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat preservation boxes and relates to a heat preservation box for a high-pressure hydrogen cylinder. Background Art

[0002] The widespread adoption of new energy sources is driving growing demand for high-pressure hydrogen cylinders. As a crucial component of future clean energy, safe and efficient storage and transportation technologies are key to its widespread adoption. However, the safety risks associated with storing high-pressure hydrogen cylinders cannot be ignored. In addition to the cylinder's inherent structure, the structure of the insulation box also plays a decisive role in the cylinder's insulation and safety.

[0003] Cryogenic storage is a method of hydrogen storage that can store more hydrogen within the same volume. High-pressure hydrogen cylinders store high pressures, making safety difficult to guarantee. Cryogenic storage of hydrogen is difficult to cool to the critical temperature of liquid hydrogen, so improvements are needed to improve hydrogen storage conditions. Utility Model Content

[0004] The purpose of the utility model is to provide a heat preservation box for high-pressure hydrogen cylinders, which solves the technical problems in the prior art that the high-pressure hydrogen storage pressure of high-pressure hydrogen cylinders is high and the safety performance is difficult to ensure.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: an insulation box for high-pressure hydrogen cylinders includes: a box body, an inner liner, and a cooling unit; the inner liner is fixedly installed inside the box body, and the cooling unit is fixedly installed on one side of the box body; an impeller hole is provided on the side of the inner liner close to the cooling unit, and the cooling unit includes an impeller, an impeller shaft and a circulating cooling device, and the circulating cooling device is fixedly installed on one side of the box body, the impeller shaft passes through the impeller hole and is fixedly connected to the impeller at one end, and is fixedly connected to the circulating cooling device at the other end, and the impeller is arranged in the inner liner.

[0006] Furthermore, the box body includes a support frame and an inner liner support; the inner liner is fixedly installed in the inner liner support, the inner liner support is arranged inside the support frame, and an insulation material is arranged between the outer side of the inner liner support and the inner side of the support frame, and the support frame and the inner liner support are detachably connected.

[0007] Furthermore, a vacuum insulation panel is provided on the side of the support frame away from the thermal insulation material, a shell is provided on the outside of the vacuum insulation panel, and the box body is nested in the shell; the vacuum insulation panel is made of high-strength aviation alloy.

[0008] Furthermore, it also includes a box cover, which is arranged at one end of the box body, and the box cover is rotatably connected to the box body through a connecting piece.

[0009] Furthermore, the box cover includes a box cover body and a side cover; the side cover is arranged on one side of the box cover body, one end of the box cover body is fixedly connected to the box body, and the other end is fixedly connected to the side cover, a through hole is provided on the side cover, and a groove adapted to the through hole is provided on the box body.

[0010] Furthermore, a heat-insulating cover and a sealing member are provided in the box cover body; the sealing member is sleeved on the side wall of one end of the heat-insulating cover and fixedly connected to the box cover body, and a polygonal groove is provided on the side of the heat-insulating cover close to the inner liner.

[0011] Furthermore, a protrusion is provided on a side of the side cover close to the box body, and the protrusion is fixedly connected to the side cover.

[0012] Furthermore, it also includes a rotating unit, which is arranged at the other end of the box body and fixedly connected to the box body through a rotating cover, and the rotating cover is fixedly installed at one end of the box body away from the box cover.

[0013] Furthermore, an inner liner integrated valve and a pressure sensor are provided at the upper end of the inner liner; the pressure sensor is arranged on the side of the integrated valve away from the rotating unit, and the inner liner integrated valve is arranged at the rear end of the pressure sensor, and the inner liner integrated valve and the pressure sensor are both fixedly connected to the inner liner.

[0014] Furthermore, a vacuum bottle mouth is provided on the vacuum insulation board, and the vacuum bottle mouth is fixedly connected to the vacuum insulation board.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] The utility model discloses an insulation box for a high-pressure hydrogen cylinder. The inner liner is made of high-strength aviation alloy. The impeller in the inner liner causes the liquid nitrogen in the inner liner to flow continuously, so that the temperature is kept constant. The inner liner wall in contact with the high-pressure hydrogen cylinder is relatively thin, which can effectively cool the high-pressure hydrogen cylinder. The metal mesh in the inner liner can play a supporting role.

[0017] The utility model discloses an insulation box for high-pressure hydrogen cylinders. Liquid nitrogen is installed in the inner tank. Compared with traditional compressor refrigeration or semiconductor refrigeration, the temperature of the liquid nitrogen can provide the required low-temperature environment for the high-pressure hydrogen cylinders, so that the high-pressure hydrogen cylinders can be safely stored in the low-temperature environment.

[0018] The utility model discloses an insulation box for high-pressure hydrogen cylinders. The insulation box is used in conjunction with the high-pressure hydrogen cylinders to avoid cold brittleness as much as possible, and at the same time, high-pressure storage is converted into high-pressure deep-cold storage, thereby ensuring the stability of the high-pressure hydrogen cylinders during storage, and the hydrogen storage density can be significantly improved.

[0019] The utility model discloses an insulation box for high-pressure hydrogen cylinders. A vacuum insulation panel is provided between the box body and the outer shell. Insulation material and an insulation cover are provided inside the box body, thereby ensuring a low-temperature storage environment. When an accidental collision occurs, the high-pressure hydrogen cylinders will not be affected, thereby avoiding explosions or other accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of a heat preservation box for a high-pressure hydrogen cylinder according to the present invention;

[0022] Figure 2 This is a schematic structural diagram of a rotating unit in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic structural diagram of the inner container in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic structural diagram of the box cover in an embodiment of the present utility model;

[0025] Figure 5 This is a front view of an insulation box for a high-pressure hydrogen cylinder of the utility model;

[0026] Figure 6 This is a schematic structural diagram of the cooling unit in an embodiment of the present utility model.

[0027] Reference numerals:

[0028] 1-Box body; 11-Support frame; 12-Inner liner support; 13-Vacuum insulation board; 131-Vacuum bottle mouth; 2-Inner liner; 21-Inner liner integrated valve; 22-Pressure sensor; 3-Box cover; 31-Box cover body; 311-Insulation cover; 312-Seal; 32-Side cover; 321-Bump; 4-Rotation unit; 5-Cooling unit; 51-Impeller; 52-Impeller shaft; 53-Circulating cooling device; 6-Impeller hole; 7-Rotation cover; 8-Casing. DETAILED DESCRIPTION

[0029] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the numbers used in this manner are interchangeable where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products, or apparatus.

[0031] The present invention is described in further detail below with reference to the accompanying drawings:

[0032] Example 1

[0033] The utility model provides a heat preservation box for high-pressure hydrogen cylinders, comprising a box body 1, an inner liner 2, and a cooling unit 5; the inner liner 2 is fixedly installed inside the box body 1, and the cooling unit 5 is fixedly installed on one side of the box body 1; the box body 1 comprises a support frame 11 and an inner liner support 12.

[0034] The liner 2 is fixedly mounted within a liner support 12, which is located within a support frame 11. Insulation material is provided between the outer side of the liner support 12 and the inner side of the support frame 11. The support frame 11 and liner support 12 are detachably connected. A vacuum insulation panel 13 is provided on the side of the support frame 11 away from the insulation material. The vacuum insulation panel 13 is made of a high-strength aviation alloy.

[0035] Specifically, if Figure 1 He Ru Figure 5 As shown, the box body 1 includes a support frame 11, an inner liner support 12 and a vacuum insulation panel 13. The inner liner support 12 is sleeved on the outside of the inner liner 2, and the support frame 11 is sleeved on the outside of the inner liner support 12. There is insulation material between the support frame 11 and the inner liner support 12, and the vacuum insulation layer 13 is arranged on the side of the support frame 11 away from the inner liner support 12.

[0036] First, fill the four parts of the upper, lower, left and right sides of the support frame 11 with insulation material, install the inner liner 2 in the inner liner support 12, and install the inner liner support 12 with the inner liner 2 in the support frame 11 filled with insulation material. The vacuum insulation panel 13 is made of high-strength aviation alloy, and the interior is in a vacuum state and filled with insulation material, which not only ensures the vacuum insulation effect, but also increases the supporting strength of the box 1, and can support the weight of two high-pressure hydrogen cylinders.

[0037] A vacuum bottle mouth 131 is provided at the upper end of the vacuum insulation layer 13, and the vacuum bottle mouth 131 keeps the vacuum insulation layer 13 in a vacuum state, thereby ensuring the thermal insulation effect of the entire box body 1. The vacuum insulation layer 13 is provided between the box body 1 and the outer shell 8.

[0038] An inner liner integrated valve 21 and a pressure sensor 22 are provided at the upper end of the inner liner 2; the pressure sensor 22 is arranged on the side of the integrated valve 21 away from the rotating unit 4, and the inner liner integrated valve 21 is arranged at the rear end of the pressure sensor 22, and the inner liner integrated valve 21 and the pressure sensor 22 are both fixedly connected to the inner liner 2.

[0039] like Figure 3 As shown, the inner liner 2 is provided with an inner liner integrated valve 21, a pressure sensor 22 and an impeller hole 6. The pressure sensor 22 is located at the front end, close to the side of the box cover 3; the inner liner integrated valve 21 is set at the rear end of the pressure sensor 22. The inner liner integrated valve 21 is used to fill and discharge liquid nitrogen into the inner liner 2, and to relieve pressure under high temperature and high pressure conditions; the pressure sensor 22 is used to monitor the pressure of the liquid nitrogen in the inner liner 2 in real time and display the data on the display. The pressure sensor 22 can be a wireless pressure sensor. The wireless pressure sensor can install the display position at the desired position, which is convenient for real-time monitoring of the pressure condition of the inner liner 2. In addition, there is a metal mesh inside the inner liner 2, which provides sufficient support for the technology of sufficient flow of liquid nitrogen.

[0040] The impeller hole 6 is arranged on the side of the inner tank 2 close to the cooling unit 5. The cooling unit 5 includes an impeller 51, an impeller shaft 52 and a circulating cooling device 53. The circulating cooling device 53 is fixedly installed on one side of the box body 1. The impeller shaft 52 passes through the impeller hole 6 and is fixedly connected to the impeller 51 at one end, and is fixedly connected to the circulating cooling device 53 at the other end. The impeller 51 is arranged in the inner tank 2.

[0041] like Figure 6 As shown, the impeller 51 passes through the impeller shaft 52 and is connected to the circulating cooling device 53. The impeller shaft 52 is installed in the impeller hole 6. The control device of the impeller 51 is connected to the car. The rotation of the impeller 51 is controlled by an external control button. The impeller 51 is installed in the inner tank 2. The rotation of the impeller 51 causes the liquid nitrogen inside the inner tank 2 to circulate, making its cooling stable and uniform and the cooling effect good.

[0042] An insulation box for high-pressure hydrogen cylinders can use either a high-pressure hydrogen cylinder integrated with the insulation box, that is, the high-pressure hydrogen cylinder cannot be taken out again after being put into the insulation box, and can only be repeatedly filled into the inner liner 2 through the inner liner integrated valve 21, or a plug-in type high-pressure hydrogen cylinder, that is, the high-pressure hydrogen cylinder can be replaced after use.

[0043] It should be noted that the integrated high-pressure hydrogen cylinder can be directly filled with cold hydrogen, and the plug-in high-pressure hydrogen cylinder can control the temperature rise, but the pressure of the high-pressure hydrogen cylinder needs to be reduced accordingly to ensure safety.

[0044] The box cover 3 is also included, which is arranged at one end of the box body 1. The box cover 3 is rotatably connected to the box body 1 through a connecting piece. The box cover 3 includes a box cover body 31 and a side cover 32; the side cover 32 is arranged on one side of the box cover body 31, one end of the box cover body 31 is fixedly connected to the box body 1, and the other end is fixedly connected to the side cover 32, a through hole is provided on the side cover 32, and a groove adapted to the through hole is provided on the box body 1, and an insulation cover 311 and a sealing member 312 are provided in the box cover body 31; the sealing member 312 is sleeved on the side wall of one end of the insulation cover 311 and fixedly connected to the box cover body 31, and a polygonal groove is provided on the side of the insulation cover 311 close to the inner liner 2.

[0045] Specifically, if Figure 1 He Ru Figure 4 As shown, the box cover 3 is installed at the front end of the box body 1, and a shutter is provided at the lower end of the support frame 11. The box cover 3 includes a box cover body 31 and a side cover 32. The axis of the box cover body 31 is perpendicular to the axis of the side cover 32. One end of the box cover body 31 is rotatably connected to the support cabinet 11 by a hinge, and the other end is welded to the side cover 32 for fixation. The box cover body 31 and the side cover 32 can also be an integral structure. The inside of the box cover body 31 is an insulation cover 311. The upper side wall of the insulation cover 311 is a sealing member 312. The sealing member 312 is made of an elastic material. When the box cover body 31 is connected to the box body 1, the box body 1 is well sealed.

[0046] A protrusion 321 is provided on the side cover 32. The protrusion 321 is an elastic object, and the shape and size of the through hole on the side cover 32 are the same as the size of the groove on the support frame 11. When the box cover 3 is flipped over and abutted against the box body 1, the screws or bolts pass through the through holes and grooves from top to bottom in sequence to be threadedly connected with the box body 1.

[0047] It also includes a rotating unit 4, which is arranged at the other end of the box body 1 and fixedly connected to the box body 1 through a rotating cover 7; the rotating cover 7 is fixedly installed at the end of the box body 1 away from the box cover 3.

[0048] Specifically, if Figure 2As described above, a rotating cover 7 is provided on the rear side of the box body 1 near the circulating cooling device, and the rotating cover 7 is welded to the box body 1. The rotating unit 4 includes an upper rotating cover and a lower rotating cover. The lower rotating cover is provided on the side away from the vacuum bottle opening 131, and the upper rotating cover is provided above the lower rotating cover. Both the upper rotating cover and the lower rotating cover are movably connected to the rotating cover 7.

[0049] A semicircular through hole is provided on one side of the upper rotating cover close to the lower rotating cover, and a semicircular through hole is also provided on the side of the lower rotating cover close to the upper rotating cover. If the bottom edge of the upper rotating cover abuts the top edge of the lower rotating cover, the two semicircular holes in the same vertical direction form a circular through hole. One end of the high-pressure hydrogen cylinder passes through the circular through hole, and the high-pressure hydrogen cylinder is fixed by the upper rotating cover and the lower rotating cover. Figure 2 As shown, the lower right corner of the upper rotating cover and the upper right corner of the lower rotating cover are threadedly connected to the housing 8 through fixing members.

[0050] An insulation box for a high-pressure hydrogen cylinder. An impeller 51 in an inner liner 2 causes the liquid nitrogen in the inner liner 2 to flow continuously, maintaining a constant temperature. The extremely low temperature of the liquid nitrogen provides the required low-temperature environment for the high-pressure hydrogen cylinder, allowing the hydrogen in the high-pressure hydrogen cylinder to be safely stored in the low-temperature environment. The vacuum insulation panel 13 and the insulation cover 311 can achieve a heat preservation function, which can not only ensure a low-temperature storage environment, but also protect the high-pressure hydrogen cylinder from being affected and preventing explosion in the event of accidental collision.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An insulation box for high-pressure hydrogen cylinders, characterized by: It comprises a box body (1), an inner liner (2), and a cooling unit (5); the inner liner (2) is fixedly mounted inside the box body (1), and the cooling unit (5) is fixedly mounted on one side of the box body (1); An impeller hole (6) is provided on one side of the inner container (2) close to the cooling unit (5); the cooling unit (5) comprises an impeller (51), an impeller shaft (52) and a circulating cooling device (53); the circulating cooling device (53) is fixedly mounted on one side of the housing (1); one end of the impeller shaft (52) passes through the impeller hole (6) and is fixedly connected to the impeller (51); the other end is fixedly connected to the circulating cooling device (53); the impeller (51) is arranged in the inner container (2).

2. The heat preservation box for high-pressure hydrogen cylinders according to claim 1, characterized in that: The box body (1) comprises a support frame (11) and an inner container support (12); The inner liner (2) is fixedly mounted in the inner liner support (12), the inner liner support (12) is arranged inside the support frame (11), a heat-insulating material is arranged between the outer side of the inner liner support (12) and the inner side of the support frame (11), and the support frame (11) and the inner liner support (12) are detachably connected.

3. The heat preservation box for high-pressure hydrogen cylinders according to claim 2, characterized in that: A vacuum insulation panel (13) is provided on the side of the support frame (11) away from the heat-insulating material, a shell (8) is provided on the outside of the vacuum insulation panel, and the box body (1) is nested in the shell (8); The vacuum insulation panel (13) is made of high-strength aviation alloy.

4. The heat preservation box for high-pressure hydrogen cylinders according to claim 1, characterized in that: The box cover (3) is also included. The box cover (3) is arranged at one end of the box body (1). The box cover (3) is rotatably connected to the box body (1) via a connecting piece.

5. The heat preservation box for high-pressure hydrogen cylinders according to claim 4, characterized in that: The box cover (3) comprises a box cover body (31) and a side cover (32); The side cover (32) is arranged on one side of the box cover body (31); one end of the box cover body (31) is fixedly connected to the box body (1), and the other end is fixedly connected to the side cover (32); a through hole is provided on the side cover (32), and a groove adapted to the through hole is provided on the box body (1).

6. The heat preservation box for high-pressure hydrogen cylinders according to claim 5, characterized in that: A heat-insulating cover (311) and a sealing member (312) are provided in the box cover body (31); The sealing member (312) is sleeved on a side wall of one end of the heat-insulating cover (311) and fixedly connected to the box cover body (31). A polygonal groove is provided on a side of the heat-insulating cover (311) close to the inner container (2).

7. The heat preservation box for high-pressure hydrogen cylinders according to claim 5, characterized in that: A protrusion (321) is provided on one side of the side cover (32) close to the box body (1), and the protrusion (321) is fixedly connected to the side cover (32).

8. The heat preservation box for high-pressure hydrogen cylinders according to claim 4, characterized in that: It also includes a rotating unit (4), which is arranged at the other end of the box body (1) and is fixedly connected to the box body (1) via a rotating cover (7); The rotating cover (7) is fixedly mounted on an end of the box body (1) away from the box cover (3).

9. The heat preservation box for high-pressure hydrogen cylinders according to claim 1, characterized in that: The upper end of the inner container (2) is provided with an inner container integrated valve (21) and a pressure sensor (22); The pressure sensor (22) is arranged on a side of the integrated valve (21) away from the rotating unit (4), the liner integrated valve (21) is arranged at the rear end of the pressure sensor (22), and both the liner integrated valve (21) and the pressure sensor (22) are fixedly connected to the liner (2).

10. The heat preservation box for high-pressure hydrogen cylinders according to claim 3, characterized in that: The vacuum insulation panel (13) is provided with a vacuum bottle mouth (131), and the vacuum bottle mouth (131) is fixedly connected to the vacuum insulation panel (13).

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