Organic liquid hydrogen storage device and hydrogen storage method

Abstract

The invention relates to the technical field of hydrogen storage devices, in particular to an organic liquid hydrogen storage device and a hydrogen storage method.The organic liquid hydrogen storage device comprises a hydrogen storage tank, a gas inlet pipe is fixedly connected to the hydrogen storage tank, the gas inlet pipe is fixedly connected with a compressor through a pipeline, and the compressor is connected with an electrolytic tank through a pipeline. The hydrogen storage device has the advantages that through cooperative arrangement of the gas inlet pipe, the compressor, the electrolytic tank, the heat insulation ring seat, a heat insulation layer structure, a cooling pipe, a cooling liquid tank, a controller, a cooler, a conveying pump, a first temperature sensor, a liquid level sensor, a pressure sensor, a liquid adding pipe and a liquid adding pump, hydrogen storage work can be automatically stopped when hydrogen in the hydrogen storage tank is added to a certain degree; and in addition, during hydrogen storage work, the influence of external temperature on the interior of the hydrogen storage tank can be isolated, liquid in the hydrogen storage tank can be cooled, the situation that liquid hydrogen is evaporated and lost due to temperature rise in the hydrogen storage tank is avoided, and the utilization rate of the liquid hydrogen is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage devices, and in particular to an organic liquid hydrogen storage device and a hydrogen storage method. Background Art

[0002] The principle of liquid organic hydrogen storage technology (LOHC for short) is to achieve hydrogen storage (chemical bonding) through the reversible reaction and hydrogenation reaction of unsaturated liquid organic matter such as certain olefins, alkynes or aromatic hydrocarbons and hydrogen, and to release hydrogen through dehydrogenation reaction. The mass hydrogen storage density is 5%-10%, and the hydrogen storage capacity is large. The hydrogen storage material is liquid organic matter, which can be transported at room temperature and pressure, which is convenient and safe.

[0003] When using a hydrogen storage device to store liquid hydrogen, since liquid hydrogen is a liquid obtained by cooling hydrogen gas, in order to facilitate the storage of liquid hydrogen, it is necessary to ensure that the storage environment is stable. When using liquid hydrogen, heat exchange will cause external heat to gradually enter the hydrogen storage device, causing the internal temperature of the hydrogen storage device to rise, the evaporation loss of liquid hydrogen to increase, and the utilization rate of liquid hydrogen to decrease. Therefore, an organic liquid hydrogen storage device and a hydrogen storage method are invented to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides an organic liquid hydrogen storage device and a hydrogen storage method, which have the advantages of avoiding the increase of the internal temperature of the hydrogen storage tank 1 and solve the problems existing in the prior art.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an organic liquid hydrogen storage device, comprising a hydrogen storage tank, an air intake pipe is fixedly connected to the hydrogen storage tank, the air intake pipe is fixedly connected to a compressor through a pipeline, the compressor is connected to an electrolytic cell through a pipeline, a plurality of heat insulation ring seats are fixedly connected to the outer surface of the hydrogen storage tank, a heat insulation layer structure is arranged between the plurality of heat insulation ring seats, a cooling pipe is arranged inside the hydrogen storage tank, a coolant tank is fixedly connected to a water inlet of the cooling pipe through a pipeline, a controller is arranged on the coolant tank, the coolant tank is connected to a cooler through a pipeline, the cooler is connected to a delivery pump through a pipeline, the water inlet of the delivery pump is connected to the water outlet end of the cooling pipe through a pipeline, a first temperature sensor, a liquid level sensor and a pressure sensor are arranged inside the hydrogen storage tank, a liquid adding pipe is fixedly connected to the hydrogen storage tank, and the liquid adding pipe is connected to the liquid adding pump through a pipeline.

[0008] Preferably, a second temperature sensor is provided inside the coolant tank, a semiconductor refrigeration plate is fixedly installed on one side of the coolant tank, a plurality of heat-conducting rods are fixedly connected to the cold end of the semiconductor refrigeration plate, a plurality of heat sinks are fixedly connected to the hot end of the semiconductor refrigeration plate, a motor is fixedly installed on one side of the coolant tank, and a stirring rod is fixedly connected to the output end of the motor.

[0009] Preferably, the insulation layer structure includes two mounting plates, two insulation layers and a plurality of connecting plates, the inner walls of the two mounting plates are fixedly connected with insulation layers, the outer surfaces of the two mounting plates are fixedly connected with a plurality of connecting plates, a through hole is formed on one side of the plurality of connecting plates, and the plurality of connecting plates are connected by bolts and nuts.

[0010] Preferably, the cooling tube is spiral in shape, and the outer wall of the cooling tube fits with the inner wall of the hydrogen storage tank.

[0011] Preferably, the first temperature sensor is electrically connected to the controller, the liquid level sensor is electrically connected to the controller, the pressure sensor is electrically connected to the controller, the controller is electrically connected to the compressor, the controller is electrically connected to the delivery pump, and the controller is electrically connected to the cooler.

[0012] Preferably, the heat-conducting rod passes through the coolant tank and extends to the interior of the coolant tank, and the stirring rod is located inside the coolant tank.

[0013] Preferably, the second temperature sensor is electrically connected to the controller, the controller is electrically connected to the semiconductor refrigeration sheet, and the controller is electrically connected to the motor.

[0014] A hydrogen storage method for an organic liquid hydrogen storage device, using the organic liquid hydrogen storage device according to any one of claims 1 to 4, comprising the following steps:

[0015] 1) adding a hydrogen storage carrier into the interior of the hydrogen storage tank through the liquid adding pipe;

[0016] 2) The hydrogen generated by electrolysis in the electrolytic cell is transported to the interior of the hydrogen storage tank via a compressor and a pipeline, and at the same time, the hydrogen storage carrier simultaneously enters the interior of the hydrogen storage tank;

[0017] 3) When one of the pressure sensor or the liquid level sensor generates a signal, the controller will shut down the compressor and the liquid adding pump, thereby blocking the operation of adding hydrogen and hydrogen storage carrier to the hydrogen storage tank, thereby completing the entire hydrogen storage process.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides an organic liquid hydrogen storage device and a hydrogen storage method, which have the following beneficial effects:

[0020] 1. The organic liquid hydrogen storage device and hydrogen storage method, through the coordinated arrangement of the intake pipe, compressor, electrolytic cell, thermal insulation ring seat, thermal insulation layer structure, cooling pipe, coolant tank, controller, cooler, delivery pump, first temperature sensor, liquid level sensor, pressure sensor, liquid adding pipe and liquid adding pump, can automatically shut down the hydrogen storage work when the hydrogen in the hydrogen storage tank is added to a certain amount, and can isolate the influence of the external temperature on the inside of the hydrogen storage tank and cool the liquid in the hydrogen storage tank during the hydrogen storage work, thereby avoiding the evaporation loss of liquid hydrogen caused by the increase of the temperature inside the hydrogen storage tank and ensuring the utilization rate of liquid hydrogen.

[0021] 2. The organic liquid hydrogen storage device and hydrogen storage method, through the coordinated arrangement of the second temperature sensor, semiconductor refrigeration sheet, heat-conducting rod, heat sink, motor and stirring rod, can automatically reduce the temperature of the coolant inside the coolant tank when the temperature of the coolant inside the coolant tank rises due to the external temperature, thereby achieving a better cooling effect on the liquid hydrogen inside the hydrogen storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the hydrogen storage tank of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the coolant tank and its connecting components of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the hydrogen storage tank of the present invention;

[0026] Figure 5 It is a cross-sectional structural schematic diagram of the coolant tank and its connecting components of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the heat insulation layer structure of the present invention;

[0028] Figure 7 It is a schematic diagram of the control principle of the present invention.

[0029] In the figure: 1-hydrogen storage tank, 2-intake pipe, 3-compressor, 4-electrolytic cell, 5-insulation ring seat, 6-insulation layer structure, 601-mounting plate, 602-insulation layer, 603-connecting plate, 7-cooling pipe, 8-coolant tank, 9-controller, 10-cooler, 11-delivery pump, 12-first temperature sensor, 13-liquid level sensor, 14-pressure sensor, 15-liquid adding pipe, 16-second temperature sensor, 17-semiconductor refrigeration plate, 18-heat conducting rod, 19-heat sink, 20-motor, 21-stirring rod. DETAILED DESCRIPTION

[0030] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-7 An organic liquid hydrogen storage device comprises a hydrogen storage tank 1, an air intake pipe 2 is fixedly connected to the hydrogen storage tank 1, a liquid discharge pipe is arranged on the hydrogen storage tank 1, the air intake pipe 2 is fixedly connected to a compressor 3 through a pipeline, the compressor 3 is connected to an electrolytic cell 4 through a pipeline, a plurality of heat insulation ring seats 5 are fixedly connected to the outer surface of the hydrogen storage tank 1, a heat insulation layer structure 6 is arranged between the plurality of heat insulation ring seats 5, a plurality of heat insulation layer structures 6 are isolated by the plurality of heat insulation ring seats 5, heat conduction between the plurality of heat insulation layer structures 6 is avoided, so that the heat insulation effect is relatively good, and the influence of the external temperature on the hydrogen storage tank 1 can be greatly avoided by the heat insulation layer structure 6, a cooling pipe 7 is arranged inside the hydrogen storage tank 1, a coolant tank 8 is fixedly connected to the water inlet of the cooling pipe 7 through a pipeline, a controller 9 is arranged on the coolant tank 8, and the coolant tank 8 is connected to a cooler through a pipeline 10, the cooler 10 is connected to the delivery pump 11 through a pipeline, and the water inlet of the delivery pump 11 is connected to the water outlet end of the cooling pipe 7 through a pipeline. The interior of the hydrogen storage tank 1 is provided with a first temperature sensor 12, a liquid level sensor 13 and a pressure sensor 14. The hydrogen storage tank 1 is fixedly connected with a liquid adding pipe 15, and the liquid adding pipe 15 is connected to the liquid adding pump through a pipeline. When the internal temperature of the hydrogen storage tank 1 rises, the first temperature sensor 12 generates a signal, and the controller 9 will control the cooler 10 and the delivery pump 11 to start. With the start of the delivery pump 11, the coolant circulates between the cooler 10, the cooling pipe 7 and the coolant tank 8, and the coolant can be cooled by the cooler 10, thereby reducing the temperature of the coolant, and then reducing the temperature of the liquid hydrogen inside the hydrogen storage tank 1, and cooling the liquid hydrogen inside the hydrogen storage tank 1.

[0032] A second temperature sensor 16 is provided inside the coolant tank 8. A semiconductor refrigeration sheet 17 is fixedly installed on one side of the coolant tank 8. A plurality of heat-conducting rods 18 are fixedly connected to the cold end of the semiconductor refrigeration sheet 17. The plurality of heat-conducting rods 18 penetrate one side of the coolant tank 8 and extend to the inside of the coolant tank 8. A plurality of heat-conducting rods 18 are fixedly connected to the hot end of the semiconductor refrigeration sheet 17. The semiconductor refrigeration sheet 17 is radiated by the plurality of heat-conducting fins 19, so that the refrigeration effect of the semiconductor refrigeration sheet 17 is better. A motor 20 is fixedly installed on one side of the coolant tank 8. The motor 2 0 is fixedly connected to the output end thereof with a stirring rod 21. When the temperature inside the coolant tank 8 rises to a specific temperature, the second temperature sensor 16 transmits a signal to the controller 9. At this time, the controller 9 controls the semiconductor refrigeration sheet 17 to start. At this time, the coolant inside the coolant tank 8 can be cooled by the heat-conducting rod 18. At this time, the controller 9 will control the motor 20 to start. As the motor 20 starts, the stirring rod 21 rotates and stirs the coolant inside the coolant tank 8, so that the temperature distribution of the coolant is more uniform and the coolant can be cooled quickly.

[0033] The insulation layer structure 6 includes two mounting plates 601, two insulation layers 602 and a plurality of connecting plates 603. The inner walls of the two mounting plates 601 are fixedly connected with the insulation layers 602. The insulation layer 2 is arc-shaped. The inner wall of the insulation layer 2 fits the outer surface of the hydrogen storage tank 1. The outer surfaces of the two mounting plates 601 are fixedly connected with a plurality of connecting plates 603. A through hole is provided on one side of the plurality of connecting plates 603. The plurality of connecting plates 603 are connected with bolts and nuts. The two mounting plates 601 can be easily connected and disassembled by the connecting plates 603, the connecting bolts and the nuts. Therefore, when the insulation layer 602 is damaged, only the corresponding insulation layer 602 needs to be replaced.

[0034] The cooling tube 7 is spiral in shape, and the outer wall of the cooling tube 7 fits the inner wall of the hydrogen storage tank 1, which increases the contact area between the coolant and the liquid hydrogen inside the hydrogen storage tank 1, so that the cooling effect on the liquid hydrogen inside the hydrogen storage tank 1 is relatively good.

[0035] The first temperature sensor 12 is electrically connected to the controller 9, the liquid level sensor 13 is electrically connected to the controller 9, the pressure sensor 14 is electrically connected to the controller 9, the controller 9 is electrically connected to the compressor 3, the controller 9 is electrically connected to the delivery pump 11, and the controller 9 is electrically connected to the cooler 10, so that the controller 9 can control the opening and closing of the delivery pump 11 and the cooler 10 according to the signal of the first temperature sensor 12, and the controller 9 can shut down the compressor 3 according to the signals of the liquid level sensor 13 and the pressure sensor 14.

[0036] The heat conducting rod 18 penetrates the coolant tank 8 and extends to the inside of the coolant tank 8 . The stirring rod 21 is located inside the coolant tank 8 and can cool down and stir the coolant inside the coolant tank 8 .

[0037] The second temperature sensor 16 is electrically connected to the controller 9 , the controller 9 is electrically connected to the semiconductor refrigeration plate 17 , and the controller 9 is electrically connected to the motor 20 , so that the controller 9 can control the opening and closing of the semiconductor refrigeration plate 17 and the motor 20 according to the signal of the second temperature sensor 16 .

[0038] A hydrogen storage method for an organic liquid hydrogen storage device, using the organic liquid hydrogen storage device according to any one of claims 1 to 7, comprising the following steps:

[0039] 1) adding a hydrogen storage carrier into the hydrogen storage tank 1 through the liquid adding pipe 15;

[0040] 2) The hydrogen generated by electrolysis in the electrolytic cell 4 is transported to the interior of the hydrogen storage tank 1 through the compressor 3 and the pipeline, and at the same time, the hydrogen storage carrier enters the interior of the hydrogen storage tank 1;

[0041] 3) When one of the pressure sensor 14 or the liquid level sensor 13 generates a signal, the controller 9 will shut down the compressor 3 and the liquid adding pump, thereby blocking the operation of adding hydrogen and hydrogen storage carrier to the hydrogen storage tank 1, thereby completing the entire hydrogen storage process.

[0042] During use, when the internal temperature of the hydrogen storage tank 1 rises, the first temperature sensor 12 generates a signal, and the controller 9 will control the cooler 10 and the delivery pump 11 to start. As the delivery pump 11 starts, the coolant circulates between the cooler 10, the cooling pipe 7 and the coolant tank 8, and the coolant can be cooled by the cooler 10, thereby reducing the temperature of the coolant, and then reducing the temperature of the liquid hydrogen inside the hydrogen storage tank 1, thereby cooling the liquid hydrogen inside the hydrogen storage tank 1.

[0043] In summary, the organic liquid hydrogen storage device and hydrogen storage method, through the coordinated arrangement of the intake pipe 2, the compressor 3, the electrolytic cell 4, the heat insulation ring seat 5, the heat insulation layer structure 6, the cooling pipe 7, the coolant tank 8, the controller 9, the cooler 10, the delivery pump 11, the first temperature sensor 12, the liquid level sensor 13, the pressure sensor 14, the liquid adding pipe 15 and the liquid adding pump, can automatically shut down the hydrogen storage work when the hydrogen in the hydrogen storage tank 1 is added to a certain amount, and can isolate the influence of the external temperature on the inside of the hydrogen storage tank 1 during the hydrogen storage work. And cooling the liquid inside the hydrogen storage tank 1, avoiding the evaporation loss of liquid hydrogen caused by the increase of the internal temperature of the hydrogen storage tank 1, ensuring the utilization rate of the liquid hydrogen, through the coordinated arrangement of the second temperature sensor 16, the semiconductor refrigeration plate 17, the heat conducting rod 18, the heat sink 19, the motor 20 and the stirring rod 21, when the temperature of the coolant inside the coolant tank 8 increases due to the external temperature, the temperature of the coolant inside the coolant tank 8 can be automatically reduced, thereby making the cooling effect of the liquid hydrogen inside the hydrogen storage tank 1 better.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An organic liquid hydrogen storage device, characterized in that: The invention comprises a hydrogen storage tank (1), wherein an air intake pipe (2) is fixedly connected to the hydrogen storage tank (1), wherein the air intake pipe (2) is fixedly connected to a compressor (3) via a pipeline, wherein the compressor (3) is connected to an electrolytic cell (4) via a pipeline, wherein a plurality of heat insulation ring seats (5) are fixedly connected to the outer surface of the hydrogen storage tank (1), and a heat insulation layer structure (6) is arranged between the plurality of heat insulation ring seats (5), wherein a cooling pipe (7) is arranged inside the hydrogen storage tank (1), and a coolant tank (8) is fixedly connected to the water inlet of the cooling pipe (7) via a pipeline, wherein the cooling A controller (9) is provided on the cooling liquid tank (8), the cooling liquid tank (8) is connected to a cooler (10) via a pipeline, the cooler (10) is connected to a delivery pump (11) via a pipeline, the water inlet of the delivery pump (11) is connected to the water outlet of the cooling pipe (7) via a pipeline, a first temperature sensor (12), a liquid level sensor (13) and a pressure sensor (14) are provided inside the hydrogen storage tank (1), a liquid adding pipe (15) is fixedly connected to the hydrogen storage tank (1), and the liquid adding pipe (15) is connected to the liquid adding pump via a pipeline.

2. An organic liquid hydrogen storage device according to claim 1, characterized in that: A second temperature sensor (16) is arranged inside the cooling liquid tank (8), a semiconductor cooling plate (17) is fixedly mounted on one side of the cooling liquid tank (8), a plurality of heat-conducting rods (18) are fixedly connected to the cold end of the semiconductor cooling plate (17), a plurality of heat-dissipating fins (19) are fixedly connected to the hot end of the semiconductor cooling plate (17), a motor (20) is fixedly mounted on one side of the cooling liquid tank (8), and a stirring rod (21) is fixedly connected to the output end of the motor (20).

3. An organic liquid hydrogen storage device according to claim 2, characterized in that: The heat insulation layer structure (6) comprises two mounting plates (601), two heat insulation layers (602) and a plurality of connection plates (603); the inner walls of the two mounting plates (601) are fixedly connected with the heat insulation layers (602); the outer surfaces of the two mounting plates (601) are fixedly connected with a plurality of connection plates (603); a through hole is provided on one side of the plurality of connection plates (603); and the plurality of connection plates (603) are connected to each other by bolts and nuts.

4. An organic liquid hydrogen storage device according to claim 3, characterized in that: The cooling tube (7) is in a spiral shape, and the outer wall of the cooling tube (7) fits the inner wall of the hydrogen storage tank (1).

5. An organic liquid hydrogen storage device according to claim 4, characterized in that: The first temperature sensor (12) is electrically connected to the controller (9), the liquid level sensor (13) is electrically connected to the controller (9), the pressure sensor (14) is electrically connected to the controller (9), the controller (9) is electrically connected to the compressor (3), the controller (9) is electrically connected to the delivery pump (11), and the controller (9) is electrically connected to the cooler (10).

6. An organic liquid hydrogen storage device according to claim 5, characterized in that: The heat-conducting rod (18) penetrates the coolant tank (8) and extends into the interior of the coolant tank (8), and the stirring rod (21) is located inside the coolant tank (8).

7. An organic liquid hydrogen storage device according to claim 6, characterized in that: The second temperature sensor (16) is electrically connected to the controller (9), the controller (9) is electrically connected to the semiconductor cooling sheet (17), and the controller (9) is electrically connected to the motor (20).

8. A method for storing hydrogen in an organic liquid hydrogen storage device, using the organic liquid hydrogen storage device according to any one of claims 1 to 7, comprising the following steps: 1) adding a hydrogen storage carrier into the interior of the hydrogen storage tank (1) through the liquid adding pipe (15); 2) The hydrogen generated by electrolysis in the electrolytic cell (4) is transported to the interior of the hydrogen storage tank (1) via the compressor (3) and the pipeline, and at the same time, the hydrogen storage carrier enters the interior of the hydrogen storage tank (1); 3) When one of the pressure sensor (14) or the liquid level sensor (13) generates a signal, the controller (9) will shut down the compressor (3) and the liquid adding pump, thereby blocking the operation of adding hydrogen and hydrogen storage carrier to the hydrogen storage tank (1), thereby completing the entire hydrogen storage process.

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