Low-temperature high-pressure hydrogen storage pressure vessel

Abstract

The utility model provides a low-temperature high-pressure hydrogen storage pressure container, which belongs to the technical field of hydrogen storage and comprises a storage bottle body, a pressure-resistant inner container is arranged on the inner wall of the storage bottle body, a hydrogen delivery pipe is communicated with one side of the pressure-resistant inner container in a sealed manner, a heat-conducting inner container bottle is arranged on the outer wall of the pressure-resistant inner container, and a threaded groove is formed in the outer wall of the heat-conducting inner container bottle. A cooling pipe is arranged in the threaded groove, one end of the cooling pipe is in pipe connection with a heat discharge pipe, a heat insulation plate is arranged between the heat discharge pipe and the cooling pipe, the heat discharge pipe is wound on the outer wall of the heat insulation plate, a heat insulation layer is wrapped on the outer wall of the heat discharge pipe, and a main tank body is arranged on the outer wall of the heat insulation layer. External heat is isolated through the heat insulation plate, meanwhile, the cooling temperature in the cooling cavity is kept through the heat preservation layer, the cooling cavity is in a low-temperature state, the cooling temperature is kept in a stable interval, temperature fluctuation in the cooling process is avoided, and the liquidation temperature level of reduction liquid hydrogen can be conveniently adjusted after equipment is transported to a designated position and the temperature changes.

Description

Technical Field

[0001] This utility model belongs to the field of hydrogen storage technology, specifically relating to a low-temperature high-pressure hydrogen storage pressure vessel. Background Technology

[0002] Existing high-pressure gaseous hydrogen storage tanks have a high storage density of liquid hydrogen during use, but their insulation effect is poor after sealing the hydrogen, which easily causes changes in the temperature of the liquid hydrogen and affects the high-pressure storage of hydrogen. Among them, the "a low-temperature high-pressure hydrogen storage cylinder" disclosed in application number "CN201820172112.9" is also an increasingly mature technology. It has a hydrogen inlet and outlet pipeline connected by an upper sealing connection mechanism. The inlet and outlet pipelines are led out of the cylinder through a flow control valve, which is installed on the bottleneck of the outer shell. In addition, a vacuum pipeline is also installed on the flow control valve, which is connected to a vacuum insulation jacket for evacuating the vacuum insulation jacket. However, this device still has the following defects: during the storage of liquid hydrogen, when the temperature changes, it affects the storage of liquid hydrogen. When it is transported to a designated location for reuse, the liquid temperature of the liquid hydrogen cannot be restored, and the storage state of liquid hydrogen under high pressure must be readjusted. During transportation, external impacts may cause leakage of the vacuum jacket, which will cause the liquid hydrogen to heat up rapidly and lose its insulation effect. Utility Model Content

[0003] The purpose of this invention is to provide a low-temperature, high-pressure hydrogen storage pressure vessel, which aims to solve the problems in the prior art where, during the storage of liquid hydrogen, temperature changes affect the storage of liquid hydrogen, and when transported to a designated location for reuse, the liquid hydrogen cannot be restored to its liquid state temperature and its storage state under high pressure cannot be readjusted. Furthermore, during transportation, external impacts can cause leakage of the vacuum interlayer, leading to a rapid rise in liquid hydrogen temperature and loss of insulation effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: It includes a storage bottle body, the inner wall of which is provided with a pressure-resistant inner liner. A hydrogen delivery pipe is sealed and connected to one side of the pressure-resistant inner liner. A heat-conducting inner liner bottle is provided on the outer wall of the pressure-resistant inner liner bottle. A threaded groove is provided on the outer wall of the heat-conducting inner liner bottle. A cooling pipe is provided within the threaded groove. One end of the cooling pipe is connected to a heat exhaust pipe. A heat insulation plate is provided between the heat exhaust pipe and the cooling pipe. The heat exhaust pipe is wound around the outer wall of the heat insulation plate. A heat insulation layer is wrapped around the outer wall of the heat exhaust pipe. A main tank body is provided on the outer wall of the heat insulation layer.

[0005] In one embodiment of the cryogenic high-pressure hydrogen storage pressure vessel of this utility model, a buffer layer is provided on the inner side of the main tank body, and a high-strength anti-collision layer is provided on the outer wall of the main tank body.

[0006] In this solution, a high-strength anti-collision layer on the outside of the main tank is used to withstand external impacts during use, while a buffer layer reduces the impact force to prevent the main tank from deforming and leaking due to strong impacts.

[0007] In one embodiment of the low-temperature high-pressure hydrogen storage pressure vessel of this utility model, an inner insulation cover is provided on the inner side of the insulation plate, and a cooling chamber and a heat dissipation chamber are provided between the insulation layer and the heat-conducting inner liner bottle through the insulation plate.

[0008] In this solution, during use, after the internal liquid hydrogen is heated, the cooling pipe and the heat dissipation pipe are connected to the external cooling equipment. The cooling liquid flows into the cooling pipe and slowly permeates at a lower temperature to cool the storage bottle. At this time, the cooled liquid flows back into the heat dissipation pipe to restore the temperature of the liquid hydrogen. Meanwhile, during the heat exchange process, the external heat is isolated by the insulation plate, and the insulation layer maintains the internal cooling temperature of the cooling chamber, keeping it at a low temperature and keeping the cooling temperature within a stable range to avoid temperature fluctuations during the cooling process.

[0009] In one embodiment of the low-temperature high-pressure hydrogen storage pressure vessel of this utility model, one end of the hydrogen delivery pipe passes through the main tank body and is provided with a delivery flow control valve. A pressure gauge is provided at the bottom of the delivery flow control valve and a pressure relief valve is provided at the top of the delivery flow control valve.

[0010] In this solution, during the injection of liquid hydrogen, the inflow rate and pressurization status of liquid hydrogen are detected by a flow control valve and a pressure gauge. After use, the internal pressure of the pressure-resistant inner liner is released through a pressure relief valve to facilitate the recovery of liquid hydrogen for reuse. The pressure-resistant inner liner improves the pressure resistance of the storage bottle.

[0011] In one embodiment of the low-temperature high-pressure hydrogen storage pressure vessel of this utility model, one end of the heat exhaust pipe passes through the top of one side of the main tank and is provided with a first control valve.

[0012] In this scheme, the flow rate of the outflowing coolant is controlled by the first control valve to maintain the temperature stability of heat exchange.

[0013] In one embodiment of the low-temperature high-pressure hydrogen storage pressure vessel of this utility model, the other end of the cooling pipe passes through the bottom of one side of the main tank and is provided with a second control valve.

[0014] In this scheme, the flow rate of the incoming coolant is controlled by the second control valve, and the coolant flow rates of the first control valve and the second control valve are kept consistent.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1) The cooling liquid flows into the cooling pipe and slowly penetrates to cool the storage bottle. After cooling, the liquid flows back into the heat dissipation pipe to restore the temperature of the liquid hydrogen. At the same time, during the heat exchange process, the external heat is isolated by the heat insulation plate, and the heat insulation layer maintains the internal cooling temperature of the cooling chamber, keeping it at a low temperature and keeping the cooling temperature within a stable range. This avoids temperature fluctuations during the cooling process and allows the equipment to be adjusted after being transported to the designated location to restore the liquefaction temperature level of the liquid hydrogen.

[0017] 2) The high-strength anti-collision layer on the outside of the main tank resists external impacts, while the buffer layer reduces the impact force to prevent the main tank from deforming and leaking due to strong impacts. The pressure-resistant inner liner increases the pressure resistance of the storage bottle. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the insulation board of this utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the main tank of this utility model.

[0022] In the diagram: 1. Storage bottle body; 2. Pressure-resistant inner liner; 3. Hydrogen delivery pipe; 4. Thermally conductive inner liner bottle; 5. Threaded groove; 6. Cooling pipe; 7. Heat dissipation pipe; 8. Insulation plate; 9. Insulation layer; 10. Main tank body; 101. Buffer layer; 102. High-strength anti-collision layer; 11. Inner insulation cover; 12. Cooling chamber; 13. Heat dissipation chamber; 14. Delivery flow control valve; 15. Pressure gauge; 16. Pressure relief valve; 17. First control valve; 18. Second control valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-3The present invention provides the following technical solution: a low-temperature high-pressure hydrogen storage pressure vessel, comprising a storage bottle body 1, an anti-pressure inner liner 2 provided on the inner wall of the storage bottle body 1, a hydrogen delivery pipe 3 sealed and connected to one side of the anti-pressure inner liner 2, a heat-conducting inner liner bottle 4 provided on the outer wall of the anti-pressure inner liner 2, a threaded groove 5 provided on the outer wall of the heat-conducting inner liner bottle 4, a cooling pipe 6 provided in the threaded groove 5, a heat exhaust pipe 7 connected to one end of the cooling pipe 6, a heat insulation plate 8 provided between the heat exhaust pipe 7 and the cooling pipe 6, the heat exhaust pipe 7 being wound around the outer wall of the heat insulation plate 8, a heat insulation layer 9 wrapped around the outer wall of the heat exhaust pipe 7, and a main tank body 10 provided on the outer wall of the heat insulation layer 9.

[0025] In a specific embodiment of a cryogenic high-pressure hydrogen storage pressure vessel, please refer to [link / reference]. Figure 3 The inner side of the main tank 10 is provided with a buffer layer 101, and the outer wall of the main tank 10 is provided with a high-strength anti-collision layer 102.

[0026] Please see Figure 3 During use, the high-strength anti-collision layer 102 on the outside of the main tank 10 resists external impact forces, while the buffer layer 101 reduces the impact force to prevent the main tank 10 from deforming and leaking due to strong impacts.

[0027] In a specific embodiment of a cryogenic high-pressure hydrogen storage pressure vessel, please refer to [link / reference]. Figure 1 The inner side of the insulation plate 8 is provided with an inner insulation cover 11. The insulation layer 9 and the heat-conducting inner liner bottle 4 are separated by the insulation plate 8 and are provided with a cooling chamber 12 and a heat dissipation chamber 13.

[0028] Please see Figure 1 During use, when the internal liquid hydrogen is heated, the cooling pipe 6 and the heat dissipation pipe 7 are connected to the external cooling equipment. The cooling liquid flows into the cooling pipe 6 and slowly penetrates at a lower temperature to cool the storage bottle 1. At this time, the cooled liquid flows back into the heat dissipation pipe 7 to restore the temperature of the liquid hydrogen. At the same time, during the heat exchange process, the external heat is isolated by the heat insulation plate 8, and the heat insulation layer 9 maintains the internal cooling temperature of the cooling chamber 12, keeping it at a low temperature and keeping the cooling temperature within a stable range to avoid temperature fluctuations during the cooling process.

[0029] In a specific embodiment of a cryogenic high-pressure hydrogen storage pressure vessel, please refer to [link / reference]. Figure 1 One end of the hydrogen delivery pipe 3 passes through the main tank 10 and is equipped with a delivery flow control valve 14. A pressure gauge 15 is installed at the bottom of the delivery flow control valve 14 and a pressure relief valve 16 is installed at the top of the delivery flow control valve 14.

[0030] Please see Figure 1 During the injection of liquid hydrogen, the flow rate and pressurization status of liquid hydrogen are detected by the flow control valve 14 and the pressure gauge 15. After use, the internal pressure of the pressure-resistant inner liner 2 is discharged through the pressure relief valve 16 to facilitate the recovery of liquid hydrogen for use. The pressure-resistant inner liner 2 improves the pressure resistance of the storage bottle 1.

[0031] In a specific embodiment of a cryogenic high-pressure hydrogen storage pressure vessel, please refer to [link / reference]. Figure 1 One end of the heat exhaust pipe 7 passes through the top of one side of the main tank 10 and is equipped with a first control valve 17.

[0032] Please see Figure 1 The flow rate of the coolant is controlled by the first control valve 17 to maintain the temperature stability of the heat exchange.

[0033] In a specific embodiment of a cryogenic high-pressure hydrogen storage pressure vessel, please refer to [link / reference]. Figure 1 The other end of the cooling pipe 6 passes through the bottom of one side of the main tank 10 and is equipped with a second control valve 18.

[0034] Please see Figure 1 The flow rate of the incoming coolant is controlled by the second control valve 18, and the coolant flow rates of the first control valve 17 and the second control valve 18 are kept consistent.

[0035] This utility model provides a low-temperature, high-pressure hydrogen storage pressure vessel. The specific usage is as follows: During use, after the internal liquid hydrogen heats up, the cooling pipe 6 and the heat dissipation pipe 7 are connected to an external cooling device. The flow rate of the incoming coolant is controlled by the second control valve 18, and the flow rate of the outgoing coolant is controlled by the first control valve 17. The coolant flow rates of the first control valve 17 and the second control valve 18 are kept consistent. The cooling coolant flows into the cooling pipe 6 and slowly permeates at a lower temperature, cooling the storage bottle 1. At this time, the cooled liquid flows back into the heat dissipation pipe 7 to restore the liquid hydrogen temperature. Simultaneously, during the heat exchange process, the insulation plate 8 isolates external heat, while the insulation layer 9 maintains the internal cooling temperature of the cooling chamber 12. It is in a low-temperature state, keeping the cooling temperature within a stable range to avoid temperature fluctuations during the cooling process. This allows for adjustments to be made when the temperature changes after the equipment is transported to the designated location, restoring the liquefied hydrogen temperature level. During the injection of liquid hydrogen, the inflow rate and pressurization status of liquid hydrogen are detected by the flow control valve 14 and the pressure gauge 15. After use, the internal pressure of the pressure-resistant inner liner 2 is discharged through the pressure relief valve 16 to facilitate the recovery of liquid hydrogen for use. The pressure-resistant inner liner 2 increases the pressure resistance of the storage bottle 1. During use, the high-strength anti-collision layer 102 on the outside of the main tank 10 resists external impacts, while the buffer layer 101 reduces the impact force, preventing the main tank 10 from deforming and leaking due to strong impacts.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cryogenic high-pressure hydrogen storage pressure vessel, comprising a storage bottle (1), characterized in that: The storage bottle (1) has a pressure-resistant inner liner (2) on its inner wall. A hydrogen delivery pipe (3) is sealed and connected to one side of the pressure-resistant inner liner (2). A heat-conducting inner liner bottle (4) is provided on the outer wall of the pressure-resistant inner liner (2). A threaded groove (5) is provided on the outer wall of the heat-conducting inner liner bottle (4). A cooling pipe (6) is provided in the threaded groove (5). A heat exhaust pipe (7) is connected to one end of the cooling pipe (6). A heat insulation plate (8) is provided between the heat exhaust pipe (7) and the cooling pipe (6). The heat exhaust pipe (7) is wound around the outer wall of the heat insulation plate (8). A heat insulation layer (9) is wrapped around the outer wall of the heat exhaust pipe (7). The main tank (10) is provided on the outer wall of the heat insulation layer (9).

2. The cryogenic high-pressure hydrogen storage pressure vessel according to claim 1, characterized in that: The inner side of the main tank (10) is provided with a buffer layer (101), and the outer wall of the main tank (10) is provided with a high-strength anti-collision layer (102).

3. The cryogenic high-pressure hydrogen storage pressure vessel according to claim 1, characterized in that: The inner side of the insulation plate (8) is provided with an inner insulation cover (11), and the insulation layer (9) and the heat-conducting inner liner bottle (4) are separated by the insulation plate (8) and provided with a cooling chamber (12) and a heat dissipation chamber (13).

4. A cryogenic high-pressure hydrogen storage pressure vessel according to claim 3, characterized in that: One end of the hydrogen delivery pipe (3) passes through the main tank (10) and a delivery flow control valve (14) is provided on one side. A pressure gauge (15) is provided at the bottom of the delivery flow control valve (14) and a pressure relief valve (16) is provided at the top of the delivery flow control valve (14).

5. A cryogenic high-pressure hydrogen storage pressure vessel according to claim 1, characterized in that: One end of the heat exhaust pipe (7) passes through the top of one side of the main tank (10) and is equipped with a first control valve (17).

6. A cryogenic high-pressure hydrogen storage pressure vessel according to claim 1, characterized in that: The other end of the cooling pipe (6) passes through the bottom of one side of the main tank (10) and is equipped with a second control valve (18).

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