Hydrogen storage device using ice formation and method of use thereof

Abstract

The application discloses a hydrogen storage device using ice and a use method thereof. The hydrogen storage device comprises a shell assembly, a hydrogen inlet assembly, a water inlet / outlet assembly, a refrigeration assembly and a hydrogen outlet assembly. The refrigeration assembly is installed on an upper end cover and surrounds a gas storage chamber formed by the refrigeration assembly, an inner sleeve and a lower end cover. The hydrogen inlet assembly is arranged through the lower end cover and used for inputting hydrogen into the gas storage chamber. The water inlet / outlet assembly is arranged on the bottom side of the shell assembly and through an outer sleeve, heat insulation material and the inner sleeve, and is used for water inlet / outlet of the gas storage chamber. The hydrogen outlet assembly is arranged through the upper end cover and used for discharging hydrogen in the gas storage chamber. The hydrogen storage device uses water freezing to freeze hydrogen in ice blocks, and realizes safety, high efficiency and reliability of hydrogen storage.

Description

Technical Field

[0001] This invention relates to the field of hydrogen storage technology, and more specifically to a hydrogen storage device utilizing ice and its usage method. Background Technology

[0002] The utilization of hydrogen energy involves four stages: preparation, storage, transportation, and application, with storage being particularly critical, accounting for 30-40% of the total cost. Under normal conditions, hydrogen exists in a gaseous form and is flammable, explosive, and easily diffused; therefore, efficient and safe hydrogen storage is one of the technological challenges in the development of hydrogen energy. The safety, efficiency, energy saving, low cost, and convenience of hydrogen storage systems are the fundamental goals of the hydrogen energy industry. Currently, the main hydrogen storage technologies include high-pressure gaseous hydrogen storage, cryogenic liquid hydrogen storage, metal hydride hydrogen storage, porous media adsorption hydrogen storage, and organic liquefaction hydrogen storage.

[0003] A utility model patent with publication number CN21576459U discloses a gaseous hydrogen storage device and system, including a hydrogen storage unit, a heat exchange unit, and a control unit. This device achieves gaseous hydrogen storage at low temperature and high pressure. However, high-pressure gaseous hydrogen storage requires extremely high storage pressure. Currently, mature high-pressure gaseous hydrogen storage operates at 20–25 MPa. This storage method suffers from high pressure, high risk, and low hydrogen density, necessitating a high-pressure compressor at the hydrogen-rich end. An invention patent with publication number CN110217755A discloses a liquid hydrogen storage carrier hydrogenation system, including an organic hydrogen storage carrier buffer tank, a pressurizing pump, a heat exchanger, a heater, a reactor, a gas-liquid separator, and a hydrogen compressor. This liquid hydrogen storage carrier hydrogenation system solves the problem of low hydrogen storage efficiency in existing liquid organic hydrogen storage hydrogenation processes. However, while the hydrogen storage density of low-temperature liquid hydrogen storage can reach 70 kg / m³, this system is less efficient. 3 However, liquid hydrogen at normal pressure has a temperature of -25222℃, and hydrogen liquefaction requires a large amount of energy, resulting in extremely high costs for storage and transportation equipment. Furthermore, hydrogen requires vaporization equipment during its use. Metal hydrides, on the other hand, have high volumetric hydrogen storage densities, reaching up to 40 kg / m³. 3 However, its hydrogen absorption and desorption process is slow, the cost of metal materials is high, they are prone to pulverization, and the manufacturing of pressure vessel equipment is difficult. Porous media adsorption hydrogen storage mainly includes graphene and organometallic framework materials. This method has good hydrogen storage capacity, but the material manufacturing cost is high, and no industrial-scale devices have been seen yet; the hydrogen storage technology is immature. Organic hydrogen storage has a mass hydrogen storage density of about 6% at room temperature and pressure. The hydrogen-rich end requires a hydrogenation device to generate hydrogen-rich organic compounds, and the hydrogen-demanding end requires a dehydrogenation reaction. The process is energy-intensive, and these compounds are highly toxic. Both hydrogenation and dehydrogenation need to be carried out in specific chemical industrial parks, which greatly limits its development.

[0004] To address the above issues, some existing hydrogen storage devices cannot meet the basic requirements for hydrogen storage, such as safety, efficiency, and reliability. Therefore, a new and effective hydrogen storage device is needed to solve these problems. Summary of the Invention

[0005] In view of this, the present invention provides a hydrogen storage device that utilizes ice and a method of using the same. The hydrogen storage device uses ice to seal hydrogen gas in ice blocks, thereby achieving safety, efficiency and reliability in hydrogen storage.

[0006] The present invention adopts the following specific technical solution:

[0007] The present invention provides a hydrogen storage device that utilizes icing, the hydrogen storage device comprising a shell assembly, a hydrogen inlet assembly, a water outlet / inlet assembly, a refrigeration assembly, and a hydrogen outlet assembly;

[0008] The outer casing assembly includes an upper cover, an outer sleeve, an inner sleeve, a heating wire, insulation material, and a lower cover. The outer sleeve is fitted around the outer periphery of the inner sleeve, and insulation material for heat preservation is filled between the outer sleeve and the inner sleeve. The top end of the outer sleeve is fixedly connected to the upper cover by bolts, and the bottom end is fixedly connected to the lower cover by bolts. A heating wire for heating is embedded inside the inner sleeve. The contact surfaces of the upper cover, the lower cover, the outer sleeve, and the inner sleeve are all sealed with rubber sealing rings.

[0009] The refrigeration component is installed on the upper end cover and forms a gas storage chamber around the refrigeration component, the inner sleeve and the lower end cover;

[0010] The hydrogen inlet assembly is disposed through the lower end cover and is used to input hydrogen into the gas storage chamber;

[0011] The inlet / outlet water assembly is located on the bottom side of the outer shell assembly and extends through the outer sleeve, the insulation material, and the inner sleeve, for the inlet / outlet of water in the gas storage chamber;

[0012] The hydrogen outlet assembly is disposed through the upper end cover and is used for the discharge of hydrogen from the gas storage chamber;

[0013] When storing hydrogen, the degassing distilled water in the gas storage chamber is frozen by the refrigeration component, so that the hydrogen entering the gas storage chamber is stored in the ice in the form of bubbles.

[0014] When releasing hydrogen, the ice is melted by heating with the heating wire to release the hydrogen, which is then discharged from the hydrogen outlet assembly at the top.

[0015] Furthermore, the hydrogen inlet assembly includes a hydrogen inlet pipe, a hydrogen inlet valve, and a hydrogen inlet check valve;

[0016] The hydrogen inlet pipe is fixedly installed on the lower end cover and penetrates the lower end cover;

[0017] The hydrogen inlet valve is fixedly installed in the hydrogen inlet pipe on the outside of the lower end cover and is used to control the opening and closing of the hydrogen inlet pipe.

[0018] The hydrogen inlet check valve is fixedly installed in the hydrogen inlet pipe outside the lower end cover, and is used to control the unidirectional flow of hydrogen from the outside of the gas storage room to the inside of the gas storage room.

[0019] Furthermore, the hydrogen inlet assembly also includes a hydrogen branch pipe installed at the bottom of the gas storage chamber;

[0020] The hydrogen branch pipe is connected to the outlet of the hydrogen inlet pipe and has multiple outlets evenly distributed.

[0021] Furthermore, the hydrogen inlet assembly also includes zeolite distributed at the outlet of the hydrogen branch pipe;

[0022] The zeolite is used to refine hydrogen bubbles.

[0023] Furthermore, the inlet / outlet assembly includes an inlet / outlet pipe, an inlet / outlet valve, and an inlet / outlet bidirectional valve;

[0024] The inlet / outlet pipe is installed through the outer sleeve, the insulation material, and the inner sleeve;

[0025] The inlet / outlet valve is fixedly installed in the inlet / outlet pipe outside the gas storage room;

[0026] The inlet / outlet bidirectional valve is fixedly installed in the inlet / outlet pipe outside the gas storage chamber and is located between the inlet / outlet valve and the outer sleeve, and is used to control the bidirectional flow of gas-free distilled water in the inlet / outlet pipe.

[0027] Furthermore, the hydrogen outlet assembly includes a hydrogen outlet pipe and a hydrogen outlet valve;

[0028] The hydrogen outlet pipe is fixedly installed on the upper end cover and penetrates the upper end cover;

[0029] The hydrogen outlet valve is fixedly installed in the hydrogen outlet pipe on the outside of the upper end cover and is used to control the opening and closing of the hydrogen outlet pipe.

[0030] Furthermore, the refrigeration assembly includes a heat-conducting plate, a coolant inlet pipe, a coolant inlet pipe valve, a coolant outlet pipe, and a coolant outlet pipe valve;

[0031] The heat-conducting plate is sealed and installed at the top of the inner sleeve and located inside the upper end cover. An interlayer is formed between the heat-conducting plate and the upper end cover, and the interlayer is used to fill coolant.

[0032] The heat-conducting plate is used for cold energy transfer, causing the degassing distilled water in the gas storage chamber to freeze into ice.

[0033] Both the coolant inlet pipe and the coolant outlet pipe pass through the upper end cover and are connected to the interlayer, and are also connected to an external temperature-controlled bath and a circulation pump to realize the circulation of the coolant.

[0034] The coolant inlet pipe valve is installed in the coolant inlet pipe and is used to control the opening and closing of the coolant inlet pipe;

[0035] The coolant outlet valve is installed in the coolant outlet pipe and is used to control the opening and closing of the coolant outlet pipe.

[0036] Furthermore, an electric heating wire is embedded in the heat-conducting plate.

[0037] In addition, the present invention also provides a method of using the above-mentioned hydrogen storage device, the method comprising the following steps:

[0038] The first step is to remove the residual air in the gas storage chamber and inject degassing distilled water into the gas storage chamber through the inlet / outlet water assembly until the degassing distilled water is in full contact with the heat conduction plate.

[0039] The second step is to connect the coolant inlet pipe and coolant outlet pipe to the external temperature-controlled bath and circulation pump, and connect the hydrogen inlet pipe to the high-pressure cylinder containing hydrogen. Use a pressure reducer and pressure regulating valve to control the inlet pressure.

[0040] Third, close the hydrogen outlet valve, open the coolant inlet valve and coolant outlet valve, inject cryogenic coolant through the coolant inlet pipe, and after filling the jacket, discharge it through the coolant outlet pipe. At the same time, inject hydrogen into the storage chamber through the hydrogen inlet pipe. The hydrogen rises under the action of buoyancy. Under the action of the cryogenic coolant at the top, the gas-free distilled water in the storage chamber freezes from top to bottom, so that the hydrogen is stored in the ice in the form of bubbles. After the gas-free distilled water in the storage chamber is completely frozen, close the hydrogen inlet valve.

[0041] The fourth step is to remove the cryogenic coolant from the interlayer, creating a vacuum inside the interlayer.

[0042] Fifth step: Open the hydrogen outlet valve, use the heating wire to melt the ice to release hydrogen, and discharge the gas through the hydrogen outlet pipe.

[0043] Beneficial effects:

[0044] This invention relates to a hydrogen storage device based on the property that hydrogen is poorly soluble in water. Utilizing the principle of water freezing at low temperatures, hydrogen is injected into freezing water, storing it as bubbles within the ice, thus achieving rapid and high-quality hydrogen storage. Insulation material filled between the outer and inner sleeves provides insulation and reduces heat transfer, facilitating the storage and transport of hydrogen within the ice. The temperature of the heating wire can be adjusted to melt the ice and release hydrogen, achieving an integrated hydrogen storage-transportation-release function. Furthermore, the operating temperature and pressure conditions of this hydrogen storage device are relatively low, and the hydrogen storage carrier only requires water. The stored hydrogen has high purity, is free of harmful gases, and is safe and environmentally friendly. The device is also recyclable. Therefore, this hydrogen storage device achieves safe, efficient, and reliable hydrogen storage by freezing hydrogen within ice blocks through refrigeration and freezing. Attached Figure Description

[0045] Figure 1 This is a schematic diagram illustrating the working principle of the hydrogen storage device of the present invention, which utilizes ice to store hydrogen.

[0046] Figure 2 This is a schematic diagram illustrating the working principle of the hydrogen storage device of the present invention, which utilizes melting ice to release hydrogen.

[0047] Figure 3 This is a cross-sectional view of the hydrogen storage device of the present invention before hydrogen storage;

[0048] Figure 4 This is a cross-sectional view of the hydrogen storage device of the present invention after hydrogen storage;

[0049] Figure 5 This is a top view of the hydrogen storage device of the present invention;

[0050] Figure 6 This is a bottom view of the hydrogen storage device of the present invention.

[0051] Among them, 1-outer shell assembly, 2-hydrogen inlet assembly, 3-deionized water, 4-inlet / outlet water assembly, 5-refrigeration assembly, 6-hydrogen outlet assembly, 7-ice, 2-hydrogen bubble, 101-upper end cap, 102-outer sleeve, 103-inner sleeve, 104-heating wire, 105-insulation material, 106-lower end cap, 107-bolt, 102-rubber sealing ring, 201-hydrogen inlet pipe, 202-hydrogen inlet valve Door, 203-Hydrogen inlet check valve, 204-Hydrogen branch pipe, 205-Zeolite, 401-Inlet / outlet water pipe, 402-Inlet / outlet water valve, 403-Inlet / outlet water two-way valve, 501-Heat conduction plate, 502-Coolant inlet pipe, 503-Coolant inlet pipe valve, 504-Coolant outlet pipe, 505-Coolant outlet pipe valve, 506-Coolant, 601-Hydrogen outlet pipe, 602-Hydrogen outlet valve. Detailed Implementation

[0052] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0053] Example 1

[0054] This embodiment provides a hydrogen storage device that utilizes ice formation. The working principle of the hydrogen storage device is as follows: When storing hydrogen, hydrogen is injected into the storage chamber through the hydrogen inlet assembly 2 at the bottom of the outer shell assembly 1. At the same time, the cooling assembly 5 is used to cool the water and cause it to freeze unidirectionally from top to bottom. Since hydrogen is difficult to dissolve in water, hydrogen bubbles 2 are formed. The hydrogen bubbles 2 float up under the action of buoyancy and are captured and stored in the ice 7 by the ice-water phase interface that gradually advances from top to bottom. When releasing hydrogen, the ice 7 containing hydrogen bubbles 2 is heated and melted, and the hydrogen bubbles 2 stored in the ice 7 are released. The hydrogen bubbles 2 float up and flow out from the hydrogen outlet assembly 6 at the top of the outer shell assembly 1.

[0055] like Figure 1 and Figure 2 As shown, the hydrogen storage device includes an outer shell assembly 1, a hydrogen inlet assembly 2, a water outlet / inlet assembly 4, a refrigeration assembly 5, and a hydrogen outlet assembly 6.

[0056] like Figure 3 and Figure 4 As shown, the outer casing assembly 1 includes an upper end cap 101, an outer sleeve 102, an inner sleeve 103, a heating wire 104, insulation material 105, and a lower end cap 106. The outer sleeve 102 is fitted around the outer periphery of the inner sleeve 103, and insulation material 105 for heat preservation is filled between the outer sleeve 102 and the inner sleeve 103. Both the outer sleeve 102 and the inner sleeve 103 can be cylindrical structures and can be concentrically arranged, and the inner diameter of the outer sleeve 102 is larger than the outer diameter of the inner sleeve 103. The top end of the outer sleeve 102 is fixedly connected to the upper end cap 101 by bolts 107, and the bottom end is fixedly connected to the upper end cap 101 by bolts 108. 07. A lower end cap 106 is fixedly connected; an electric heating wire 104 for heating is embedded inside the inner sleeve 103. The electric heating wire 104 is used to heat the ice inside the inner sleeve 103 to melt it when hydrogen is released; the contact surfaces of the upper end cap 101, lower end cap 106, outer sleeve 102 and inner sleeve 103 are all sealed with rubber sealing rings 102. That is, the gaps between the upper end cap 101 and the outer sleeve 102, the upper end cap 101 and the inner sleeve 103, the lower end cap 106 and the outer sleeve 102, and the lower end cap 106 and the inner sleeve 103 are sealed by rubber sealing rings 102.

[0057] The refrigeration component 5 is installed on the upper end cover 101, and forms a gas storage chamber around the refrigeration component 5, the inner sleeve 103, and the lower end cover 106; as Figure 3 and Figure 4As shown, the refrigeration assembly 5 may include a heat-conducting plate 501, a coolant inlet pipe 502, a coolant inlet pipe valve 503, a coolant outlet pipe 504, and a coolant outlet pipe valve 505. The heat-conducting plate 501 is sealed and installed at the top of the inner sleeve 103 and located inside the upper end cover 101. A sandwich is formed between the heat-conducting plate 501 and the upper end cover 101. The sandwich is used to fill the coolant 506, which cools the heat-conducting plate 501. The heat-conducting plate 501 is used for cold energy transfer, causing the degassed distilled water 3 in the gas storage chamber to solidify into ice 7. The coolant inlet pipe 502 and the coolant outlet pipe 504 both pass through the upper end cover 101 and communicate with the sandwich, and are also connected to an external temperature-controlled bath and a circulation pump. The system is used to circulate the coolant 506, thereby cooling and freezing the water. The coolant inlet valve 503 is installed in the coolant inlet pipe 502 to control the opening and closing of the coolant inlet pipe 502. The coolant outlet valve 505 is installed in the coolant outlet pipe 504 to control the opening and closing of the coolant outlet pipe 504. The flow rate of the coolant 506 can be easily controlled by the coolant inlet valve 503 and the coolant outlet valve 505. The heat-conducting plate 501 is embedded with an electric heating wire 104. When hydrogen is released, the electric heating wire 104 heats the heat-conducting plate 501 and transfers heat to the ice, accelerating the melting of the ice 7, thereby achieving rapid release of hydrogen.

[0058] The hydrogen inlet assembly 2 is disposed through the lower end cover 106 and is used to introduce hydrogen into the gas storage chamber; for example Figure 3 , Figure 4 as well as Figure 6 As shown, the hydrogen inlet assembly 2 includes a hydrogen inlet pipe 201, a hydrogen inlet valve 202, a hydrogen inlet check valve 203, a hydrogen branch pipe 204, and a zeolite 205. The hydrogen inlet pipe 201 is fixedly installed on and through the lower end cover 106. The hydrogen inlet valve 202 is fixedly installed in the hydrogen inlet pipe 201 outside the lower end cover 106 and is used to control the opening and closing of the hydrogen inlet pipe 201. The hydrogen inlet check valve 203 is fixedly installed in the hydrogen inlet pipe 201 outside the lower end cover 106 and is used to control the flow of hydrogen from the lower end cover 106. The hydrogen flows unidirectionally from the outside of the gas storage chamber to the inside, preventing backflow of hydrogen entering the gas storage chamber. The hydrogen branch pipe 204 is installed at the bottom of the gas storage chamber, with its bottom end connected to the outlet of the hydrogen inlet pipe 201. It also has multiple outlets evenly distributed at the top. The hydrogen branch pipe 204 allows the hydrogen to be evenly dispersed in the water across the cross-section of the gas storage chamber, improving the uniformity of hydrogen in the ice. Zeolite 205 is distributed at the outlet of the hydrogen branch pipe 204 to refine the hydrogen bubbles 2 and increase the hydrogen content in the ice.

[0059] The inlet / outlet water assembly 4 is located on the bottom side of the outer casing assembly 1 and extends through the outer sleeve 102, the insulation material 105, and the inner sleeve 103, for the inlet / outlet of water in the air storage chamber; such as Figure 3 , Figure 4 as well as Figure 5 As shown, the inlet / outlet water assembly 4 includes an inlet / outlet water pipe 401, an inlet / outlet water valve 402, and an inlet / outlet water bidirectional valve 403. The inlet / outlet water pipe 401 is installed through the outer sleeve 102, the insulation material 105, and the inner sleeve 103. The inlet / outlet water valve 402 is fixedly installed in the inlet / outlet water pipe 401 outside the gas storage chamber. The inlet / outlet water bidirectional valve 403 is fixedly installed in the inlet / outlet water pipe 401 outside the gas storage chamber and is located between the inlet / outlet water valve 402 and the outer sleeve 102, and is used to control the bidirectional flow of the gas-free distilled water 3 in the inlet / outlet water pipe 401.

[0060] A hydrogen outlet assembly 6 is installed through the upper end cover 101 for the discharge of hydrogen from the storage chamber; such as Figure 3 , Figure 4 as well as Figure 5 As shown, the hydrogen outlet assembly 6 includes a hydrogen outlet pipe 601 and a hydrogen outlet valve 602; the hydrogen outlet pipe 601 is fixedly installed on the upper end cover 101 and passes through the upper end cover 101; the hydrogen outlet valve 602 is fixedly installed in the hydrogen outlet pipe 601 outside the upper end cover 101 and is used to control the opening and closing of the hydrogen outlet pipe 601.

[0061] When storing hydrogen, the degassing distilled water 3 in the storage chamber is frozen by the refrigeration component 5, so that the hydrogen entering the storage chamber is stored in the ice 7 in the form of bubbles; Figure 1 As shown, during the hydrogen storage process, the hydrogen gas entering from the bottom of the storage chamber moves upward under the action of buoyancy. As the cooling component 5 introduces the cooling energy, the upper part of the storage chamber is frozen, while the water 3 in the lower part is still in a liquid state, and multiple hydrogen gas bubbles 2 are frozen in the ice 7 in the upper part.

[0062] When releasing hydrogen, the ice 7 is melted by heating with heating wire 104 to release hydrogen, which is then discharged from the hydrogen outlet assembly 6 at the top. Figure 2 As shown, when hydrogen needs to be released, heat can be provided by an electric heating wire to heat the ice 7 in the gas storage chamber and gradually melt it. As the ice 7 melts into water, the hydrogen bubbles 2 frozen in the ice 7 float upward and eventually flow out of the gas storage chamber through the hydrogen outlet component 6, thus realizing the release and utilization of hydrogen.

[0063] Based on the characteristic that hydrogen is poorly soluble in water, the aforementioned hydrogen storage device utilizes the principle of water freezing at low temperatures. By injecting hydrogen into the freezing water, the hydrogen is stored in the ice 7 in the form of bubbles, achieving rapid and high-quality hydrogen storage. Insulation material 105, filled between the outer sleeve 102 and the inner sleeve 103, provides insulation and reduces heat transfer, thus enabling the storage and transportation of hydrogen in the ice 7. The temperature of the heating wire 104 can be adjusted to melt the ice 7 and release hydrogen, achieving an integrated function of hydrogen storage, transportation, and release. Furthermore, the operating temperature and pressure conditions of the aforementioned hydrogen storage device are relatively low, and the hydrogen storage carrier only requires water. The stored hydrogen has high purity, contains no harmful gases, is safe and environmentally friendly, and the hydrogen storage device is recyclable.

[0064] Therefore, the above-mentioned hydrogen storage device completes the storage, transportation and release of hydrogen by freezing hydrogen in ice blocks through refrigeration, thus achieving the safety, efficiency and reliability of hydrogen storage.

[0065] Example 2

[0066] This embodiment provides a method for using the hydrogen storage device in Embodiment 1 above, which includes the following steps:

[0067] The first step is to remove the residual air in the gas storage chamber of the assembled hydrogen storage device by injecting degassing distilled water 3 into the gas storage chamber through the inlet / outlet water assembly 4 until the degassing distilled water 3 is in full contact with the heat conduction plate 501; the removal of residual air can be achieved by vacuuming.

[0068] The second step is to connect the coolant inlet pipe 502 and the coolant outlet pipe 504 to the external temperature-controlled bath and the circulation pump, and connect the hydrogen inlet pipe 201 to the high-pressure cylinder containing hydrogen. The pressure regulator and the pressure regulating valve are used to control the inlet pressure.

[0069] Third step: Close hydrogen outlet valve 602, open coolant inlet pipe valve 503 and coolant outlet pipe valve 505, inject cryogenic coolant 506 through coolant inlet pipe 502, and after filling the jacket, discharge it through coolant outlet pipe 504. At the same time, inject hydrogen into the storage chamber through hydrogen inlet pipe 201. Hydrogen rises under the action of buoyancy. Under the action of cryogenic coolant 506 at the top, the gas-free distilled water 3 in the storage chamber freezes from top to bottom, so that hydrogen is stored in the ice 7 in the form of bubbles. After the gas-free distilled water 3 in the storage chamber is completely frozen, close hydrogen inlet valve 202.

[0070] The fourth step is to remove the cryogenic coolant 506 from the interlayer to create a vacuum inside the interlayer, which slows down heat transfer and facilitates the storage and transportation of hydrogen.

[0071] Fifth step, open the hydrogen outlet valve 602, and heat the ice 7 by the heating wire 104 to release hydrogen gas, which is then discharged through the hydrogen outlet pipe 601.

[0072] By using the hydrogen storage device in Example 1 in conjunction with the above steps, the storage, transportation and release of hydrogen can be realized, and the hydrogen storage device can be recycled by repeating the above steps.

[0073] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hydrogen storage device utilizing ice formation, characterized in that, This includes the housing assembly, hydrogen inlet assembly, water outlet / inlet assembly, refrigeration assembly, and hydrogen outlet assembly; The outer casing assembly includes an upper cover, an outer sleeve, an inner sleeve, a heating wire, insulation material, and a lower cover. The outer sleeve is fitted around the outer periphery of the inner sleeve, and insulation material for heat preservation is filled between the outer sleeve and the inner sleeve. The top end of the outer sleeve is fixedly connected to the upper cover by bolts, and the bottom end is fixedly connected to the lower cover by bolts. A heating wire for heating is embedded inside the inner sleeve. The contact surfaces of the upper cover, the lower cover, the outer sleeve, and the inner sleeve are all sealed with rubber sealing rings. The refrigeration component is installed on the upper end cover and forms a gas storage chamber around the refrigeration component, the inner sleeve and the lower end cover; The hydrogen inlet assembly is disposed through the lower end cover and is used to input hydrogen into the gas storage chamber; The inlet / outlet water assembly is located on the bottom side of the outer shell assembly and extends through the outer sleeve, the insulation material, and the inner sleeve, for the inlet / outlet of water in the gas storage chamber; The hydrogen outlet assembly is disposed through the upper end cover and is used for the discharge of hydrogen from the gas storage chamber; When storing hydrogen, the degassing distilled water in the gas storage chamber is frozen by the refrigeration component, so that the hydrogen entering the gas storage chamber is stored in the ice in the form of bubbles. When releasing hydrogen, the ice is melted by heating with the heating wire to release the hydrogen, which is then discharged from the hydrogen outlet assembly at the top.

2. The hydrogen storage device as described in claim 1, characterized in that, The hydrogen inlet assembly includes a hydrogen inlet pipe, a hydrogen inlet valve, and a hydrogen inlet check valve. The hydrogen inlet pipe is fixedly installed on the lower end cover and penetrates the lower end cover; The hydrogen inlet valve is fixedly installed in the hydrogen inlet pipe on the outside of the lower end cover and is used to control the opening and closing of the hydrogen inlet pipe. The hydrogen inlet check valve is fixedly installed in the hydrogen inlet pipe outside the lower end cover, and is used to control the unidirectional flow of hydrogen from the outside of the gas storage room to the inside of the gas storage room.

3. The hydrogen storage device as described in claim 2, characterized in that, The hydrogen inlet assembly also includes a hydrogen branch pipe installed at the bottom of the gas storage chamber; The hydrogen branch pipe is connected to the outlet of the hydrogen inlet pipe and has multiple outlets evenly distributed.

4. The hydrogen storage device as described in claim 3, characterized in that, The hydrogen inlet assembly also includes zeolite distributed at the outlet of the hydrogen branch pipe; The zeolite is used to refine hydrogen bubbles.

5. The hydrogen storage device as described in claim 4, characterized in that, The inlet / outlet assembly includes an inlet / outlet pipe, an inlet / outlet valve, and an inlet / outlet two-way valve. The inlet / outlet pipe is installed through the outer sleeve, the insulation material, and the inner sleeve; The inlet / outlet valve is fixedly installed in the inlet / outlet pipe outside the gas storage room; The inlet / outlet bidirectional valve is fixedly installed in the inlet / outlet pipe outside the gas storage chamber and is located between the inlet / outlet valve and the outer sleeve, and is used to control the bidirectional flow of gas-free distilled water in the inlet / outlet pipe.

6. The hydrogen storage device as described in claim 5, characterized in that, The hydrogen outlet assembly includes a hydrogen outlet pipe and a hydrogen outlet valve; The hydrogen outlet pipe is fixedly installed on the upper end cover and penetrates the upper end cover; The hydrogen outlet valve is fixedly installed in the hydrogen outlet pipe on the outside of the upper end cover and is used to control the opening and closing of the hydrogen outlet pipe.

7. The hydrogen storage device as described in claim 6, characterized in that, The refrigeration assembly includes a heat-conducting plate, a coolant inlet pipe, a coolant inlet pipe valve, a coolant outlet pipe, and a coolant outlet pipe valve; The heat-conducting plate is sealed and installed at the top of the inner sleeve and located inside the upper end cover. An interlayer is formed between the heat-conducting plate and the upper end cover, and the interlayer is used to fill coolant. The heat-conducting plate is used for cold energy transfer, causing the degassing distilled water in the gas storage chamber to freeze into ice. Both the coolant inlet pipe and the coolant outlet pipe pass through the upper end cover and are connected to the interlayer, and are also connected to an external temperature-controlled bath and a circulation pump to realize the circulation of the coolant. The coolant inlet pipe valve is installed in the coolant inlet pipe and is used to control the opening and closing of the coolant inlet pipe; The coolant outlet valve is installed in the coolant outlet pipe and is used to control the opening and closing of the coolant outlet pipe.

8. The hydrogen storage device as described in claim 7, characterized in that, The heat-conducting plate is embedded with heating wires.

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