CN113203040B

CN113203040B - Solid hydrogen storage tank for magnesium-based hydrogen storage

Info

Publication number: CN113203040B
Application number: CN202110669632.7A
Authority: CN
Inventors: 徐皓; 潘复生; 刘江; 陈玉安; 周世明; 冉磊
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-07-26
Anticipated expiration: 2041-06-17
Also published as: CN113203040A

Abstract

The invention discloses a solid hydrogen storage tank for magnesium-based hydrogen storage, which comprises a tank body, wherein a heat exchange box is fixed at the bottom of the tank body, a base is fixed at the bottom of the heat exchange box, a heat exchange mechanism is arranged in the heat exchange box, a walking mechanism is arranged at the bottom of the base, a pressure relief box is fixed on the side wall of the tank body, a plurality of hydrogen absorption pipes are fixedly penetrated through the side wall of the tank body, an air supplement pipe is inserted through the side wall of each hydrogen absorption pipe, and a propulsion temperature control mechanism is arranged on each hydrogen absorption pipe. Has the advantages that: through setting up a plurality of hydrogen pipes of inhaling, the volume increase that the hydrogen process of inhaling accompanies will extrude the slider, makes it promote the depression bar and removes and give way to make the pressure that volume change process produced controllable, inhale the effective distribution of hydrogen pipe, make actual pressure can evenly distributed, thereby effectively avoid jar body atress uneven, can avoid inhaling the hydrogen material and produce stress concentration and cause jar body damage in inhaling the hydrogen inflation process.

Description

Solid hydrogen storage tank for magnesium-based hydrogen storage

Technical Field

The invention relates to the technical field of hydrogen storage, in particular to a solid hydrogen storage tank for magnesium-based hydrogen storage.

Background

The hydrogen energy is taken as clean and efficient secondary energy, which is highly valued and widely researched by people, and the practical hydrogen storage modes mainly comprise three types: high pressure gaseous hydrogen storage, low temperature liquid hydrogen storage tanks, and solid state hydrogen storage based on hydrogen storage materials;

the solid-state hydrogen storage technology is characterized in that hydrogen is stored by utilizing the reaction of hydrogen and hydrogen storage materials, and compared with other hydrogen storage modes, the solid-state hydrogen storage technology has the advantages of high hydrogen storage density, low pressure, good safety, high hydrogen purity and the like, and is an important direction for the development of the hydrogen storage technology.

Disclosure of Invention

The invention aims to solve the problems of stress concentration and incapability of recycling energy in the prior art, and provides a solid hydrogen storage tank for magnesium-based hydrogen storage.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a solid-state hydrogen storage tank for magnesium-based stores up hydrogen, which comprises a tank body, the bottom of the jar body is fixed with the heat transfer case, the bottom of heat transfer case is fixed with the base, the heat transfer incasement portion is equipped with heat transfer mechanism, the base bottom is equipped with running gear, the lateral wall of the jar body is fixed with the pressure release case, the lateral wall of the jar body runs through to be fixed with a plurality of hydrogen uptake pipes, every the lateral wall of hydrogen uptake pipe all runs through to be inserted and is equipped with the air compensating pipe, every it advances accuse temperature mechanism all to be equipped with on the hydrogen uptake pipe, the lateral wall of the jar body has the closing plate through the bolt fastening, the inside of pressure release case is equipped with pressure release cooling mechanism, two transfer chambeies have been seted up to the lateral wall of the jar body, the inside in transfer chamber is equipped with heat transfer mechanism, the upper end of the jar body is fixed with the inflation inlet.

In the solid hydrogen storage tank for magnesium-based hydrogen storage, the propulsion temperature control mechanism comprises a slide block in sealed sliding connection with the inner wall of the hydrogen absorption tube, a pressure rod is fixed on the side wall of the slide block, a water cooling tube and an evaporation tube are symmetrically fixed on the outer wall of the hydrogen absorption tube, a water collecting tube is fixed on the side wall of the water cooling tube in a penetrating manner, and a gas collecting tube is fixed on the side wall of the evaporation tube in a penetrating manner.

In foretell be used for magnesium base hydrogen storage's solid-state hydrogen storage tank, pressure release cooling mechanism include with the sealed sliding connection's of pressure release incasement wall push pedal, the push pedal is connected with reset spring with pressure release incasement wall jointly, every the depression bar all is fixed mutually with the push pedal, every the lateral wall of water-cooled tube all runs through to be inserted and is equipped with the raceway, every the raceway all runs through sealed sliding connection with the push pedal.

In the solid hydrogen storage tank for magnesium-based hydrogen storage, the heat transfer mechanism comprises a transfer pipe fixed on the inner wall of a transfer cavity, a generator is fixed on the inner wall of the transfer cavity, and a main shaft of the generator penetrates through the transfer pipe and is fixed with a rotating blade.

In foretell be used for magnesium-based hydrogen storage's solid-state hydrogen storage tank, heat transfer mechanism is including being fixed in the baffle of heat transfer incasement wall, the lateral wall of baffle runs through and is fixed with the heating rod, the transfer pipe runs through the heat transfer incasement portion and communicates with the heat transfer incasement portion.

In foretell be used for magnesium-based hydrogen storage's solid-state hydrogen storage tank, running gear is including being fixed in the motor of base bottom, the motor is double-end servo motor, two output shafts of motor all are fixed with the pivot, two the tip of pivot all runs through the lateral wall of base and is fixed with the gyro wheel, the lateral wall of base is fixed with the battery.

Compared with the prior art, the invention has the advantages that:

1. according to the hydrogen absorption device, the air supplementing pipe is arranged, hydrogen enters the tank body and then passes through the hydrogen absorption pipe to react with the hydrogen absorption material in the hydrogen absorption pipe, so that the hydrogen is absorbed and stored, and meanwhile, part of the hydrogen directly enters the center of the hydrogen absorption pipe through the air supplementing pipe, so that the hydrogen absorption material in the hydrogen absorption pipe can rapidly store the hydrogen, and the hydrogen absorption efficiency is improved;

2. according to the invention, the plurality of hydrogen absorption pipes are arranged, so that the sliding block is extruded when the volume is increased in the hydrogen absorption process, the sliding block is pushed to push the pressing rod to move and yield, the pressure generated in the volume change process is controllable, the hydrogen absorption pipes are effectively distributed, the actual pressure is uniformly distributed, the uneven stress on the tank body is effectively avoided, and the damage to the tank body caused by the stress concentration of the hydrogen absorption material in the hydrogen absorption expansion process can be avoided;

3. according to the invention, by arranging the pressure lever, in the expansion process caused by hydrogen absorption, the push plate is pushed by the pressure lever to move, and the return spring is caused to continuously contract, so that the pressure borne by the push plate is continuously increased, the pressure borne by the pressure lever is constantly changed, and the constantly changed pressure constantly generates electric energy, so that the electric energy is stored in the battery, the subsequent utilization is facilitated, the capacity is effectively converted, and the purpose of saving energy is achieved;

4. in the invention, when the gasified dichloromethane and the heat-absorbed cooling liquid flow through the transfer pipe, the gasified dichloromethane and the heat-absorbed cooling liquid impact the corresponding rotating blades, so that a main shaft of the generator is driven to rotate, further the energy conversion is realized, the heat energy is converted into kinetic energy and then converted into electric energy to be stored, the subsequent utilization is facilitated, and the purpose of saving energy is achieved;

5. in the invention, in the processes of hydrogen absorption and hydrogen desorption, heat transfer is carried out comprehensively, and heat accumulation can not occur, so that the hydrogen absorption material in the processes of hydrogen absorption and hydrogen desorption is uniformly changed, the risk of stress concentration is reduced, the hydrogen absorption material can not be damaged, the integral use cost is reduced, the integral safety is improved, the processes of heat absorption and release and hydrogen conversion are carried out synchronously, the integral cooperativity is better, and the heat transfer is more timely and effective;

6. in the invention, the motor is powered by the battery, so that the roller is driven to rotate, the whole device can conveniently move, the tank body can be assisted in the carrying and moving process, the electric energy of the battery is recovered from the energy in the hydrogen absorbing and releasing process, and the energy can be effectively utilized.

Drawings

FIG. 1 is a schematic structural view of a solid-state hydrogen storage tank for magnesium-based hydrogen storage according to the present invention;

FIG. 2 is a side sectional view of a solid state hydrogen storage tank for magnesium-based hydrogen storage in accordance with the present invention;

FIG. 3 is a top cross-sectional view of a solid state hydrogen storage tank for magnesium-based hydrogen storage in accordance with the present invention;

FIG. 4 is a sectional view taken along the direction A in FIG. 3;

FIG. 5 is a sectional view of a portion of a transfer chamber in a solid state hydrogen storage tank for magnesium-based hydrogen storage in accordance with the present invention;

FIG. 6 is an enlarged view of a hydrogen absorption tube portion of a solid-state hydrogen storage tank for magnesium-based hydrogen storage according to the present invention.

In the figure: 1 tank body, 2 pressure relief boxes, 3 hydrogen absorption pipes, 4 sealing plates, 5 air supply pipes, 6 transfer cavities, 7 heat exchange boxes, 8 bases, 9 reset springs, 10 push plates, 11 sliding blocks, 12 pressure rods, 13 water cooling pipes, 14 water conveying pipes, 15 water collecting pipes, 16 evaporation pipes, 17 gas collecting pipes, 18 transfer pipes, 19 generators, 20 rotating blades, 21 inflation ports, 22 partition plates, 23 heating rods, 24 motors, 25 rotating shafts, 26 rollers and 27 batteries.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-6, a solid hydrogen storage tank for magnesium-based hydrogen storage comprises a tank body 1, a heat exchange box 7 is fixed at the bottom of the tank body 1, a base 8 is fixed at the bottom of the heat exchange box 7, a heat exchange mechanism is arranged inside the heat exchange box 7, a walking mechanism is arranged at the bottom of the base 8, a pressure relief box 2 is fixed at the side wall of the tank body 1, a plurality of hydrogen absorption tubes 3 are fixedly penetrated through the side wall of the tank body 1, an air supplement tube 5 is inserted through the side wall of each hydrogen absorption tube 3, a plurality of pores are arranged on the surfaces of the hydrogen absorption tubes 3 and the air supplement tube 5 or are directly made of air-permeable materials, hydrogen can directly penetrate through the side wall of the hydrogen absorption tube, a propulsion temperature control mechanism is arranged on each hydrogen absorption tube 3, a sealing plate 4 is fixed on the side wall of the tank body 1 through bolts, a cooling mechanism is arranged inside the pressure relief box 2, two transfer cavities 6 are arranged on the side wall of the tank body 1, a heat transfer mechanism is arranged inside the transfer cavities 6, an air charging port 21 is fixed at the upper end of the tank body 1.

The propulsion temperature control mechanism comprises a sliding block 11 which is in sealed sliding connection with the inner wall of the hydrogen absorption tube 3, a pressure rod 12 is fixed on the side wall of the sliding block 11, water cooling tubes 13 and evaporation tubes 16 are symmetrically fixed on the outer wall of the hydrogen absorption tube 3, water collecting tubes 15 penetrate through and are fixed on the side wall of each water cooling tube 13, each water collecting tube 15 is communicated with two adjacent water cooling tubes 13, a gas collecting tube 17 penetrates through and is fixed on the side wall of each evaporation tube 16, the gas collecting tubes 17 and the water collecting tubes 15 are arranged in the same mode, and dichloromethane solution filled in the evaporation tubes 16 is used for rapid heat absorption.

Pressure release cooling mechanism include with 2 inner wall sealing sliding connection's of pressure release case push pedal 10, push pedal 10 is connected with reset spring 9 with 2 inner walls of pressure release case jointly, every depression bar 12 all is fixed mutually with push pedal 10, the lateral wall of every water-cooled tube 13 all runs through to be inserted and is equipped with raceway 14, every raceway 14 all runs through sealing sliding connection with

push pedal

10, 2 inside packings of pressure release case have the coolant liquid, push pedal 10 removes and flows the extrusion coolant liquid and get into in raceway 14.

The heat transfer mechanism comprises a transfer pipe 18 fixed on the inner wall of a transfer cavity 6, a water collecting pipe 15 and a gas collecting pipe 17 at the most edge are directly inserted into the corresponding transfer pipe 18, a generator 19 is fixed on the inner wall of the transfer cavity 6, a main shaft of the generator 19 penetrates through the transfer pipe 18 and is fixed with a rotating blade 20, electric energy of the generator 19 is stored, the heat exchange mechanism comprises a partition plate 22 fixed on the inner wall of a heat exchange box 7, a heating rod 23 penetrates through the side wall of the partition plate 22, the transfer pipe 18 penetrates through the top of the heat exchange box 7 and is communicated with the inside of the heat exchange box 7, the partition plate 22 divides the heat exchange box 7 into two parts, one part is filled with cooling liquid, the other part is filled with dichloromethane solution, and the heating rod 23 can heat the two parts at the same time.

Running gear is including being fixed in the motor 24 of base 8 bottom, motor 24 is double-end servo motor, two output shafts of motor 24 all are fixed with pivot 25, the tip of two pivot 25 all runs through the lateral wall of base 8 and is fixed with gyro wheel 26, the lateral wall of base 8 is fixed with battery 27, the electric energy that generator 19 produced will directly be stored to in the battery 27, motor 24 is supplied power by battery 27, thereby drive gyro wheel 26 and rotate, and then make the removal that whole device can be convenient, make jar body 1 can obtain the assistance at the in-process that the transport removed, and the electric energy of battery 27 comes by the energy recuperation inhaling the hydrogen in-process, can effectual energy utilization.

In the invention, when hydrogen is required to be stored, hydrogen absorbing materials are put into each hydrogen absorbing pipe 3, then the sealing plate 4 is fixed by bolts, so that each hydrogen absorbing pipe 3 is sealed, then hydrogen is filled from the charging port 21, and the hydrogen enters the tank body 1 and then passes through the hydrogen absorbing pipe 3 to react with the hydrogen absorbing materials in the hydrogen absorbing pipe 3, so that the hydrogen is absorbed and stored, meanwhile, part of the hydrogen directly enters the central position of the hydrogen absorbing pipe 3 from the gas supplementing pipe 5, so that the hydrogen absorbing materials in the hydrogen absorbing pipe 3 can rapidly store the hydrogen, and the hydrogen absorbing efficiency is improved;

the dichloromethane solution in the evaporation tube 16 is heated by the heat release in the hydrogen absorption process, so that the heat in the hydrogen absorption process can be effectively diffused, and meanwhile, the volume in the hydrogen absorption process is increased, the slide block 11 is extruded and pushed to move and yield the press rod 12, so that the pressure generated in the volume change process is controllable, the damage to the tank body 1 caused by the stress concentration generated in the hydrogen absorption expansion process of the hydrogen absorption material can be avoided, the effective distribution of the hydrogen absorption tubes 3 enables the actual pressure to be uniformly distributed, and the uneven stress on the tank body 1 can be effectively avoided;

in the expansion process caused by hydrogen absorption, the push plate 10 is pushed by the pressure rod 12 to move, and the return spring 9 is caused to continuously contract, so that the pressure borne by the push plate 10 is continuously increased, and the pressure borne by the pressure rod 12 is changed constantly;

the cooling liquid in the pressure relief box 2 is extruded in the moving process of the push plate 10, so that the cooling liquid is pressed to enter the water conveying pipe 14 and then enter each water-cooling pipe 13 and then enter the corresponding transfer pipe 18, the cooling liquid continuously flows in the water-cooling pipes 13, and then the water-cooling pipes 13 can continuously absorb the heat generated in the hydrogen absorption process, so that the normal temperature in the tank body 1 in the hydrogen absorption process is ensured, the hydrogen absorption efficiency is improved, meanwhile, when the dichloromethane in the evaporation pipe 16 absorbs heat and reaches the gasification temperature, the dichloromethane is gasified to enter the corresponding transfer pipe 18, and the heat is rapidly dissipated through self gasification to achieve the purpose of cooling;

when the gasified dichloromethane and the heat-absorbed cooling liquid flow through the transfer pipe 18, the gasified dichloromethane and the heat-absorbed cooling liquid impact the corresponding rotating blade 20, so that a main shaft of the generator 19 is driven to rotate, further energy conversion is realized, heat energy is converted into kinetic energy and then converted into electric energy to be stored, the subsequent utilization is facilitated, and the purpose of saving energy is achieved;

the heat absorbed fluid enters the heat exchange box 7 to realize heat exchange with the external environment, and when hydrogen is required to be discharged, the heating rod 23 is started to heat the cooled dichloromethane and the cooling liquid to raise the temperature, the dichloromethane will be gasified and return to the evaporation tube 16 through the transfer tube 18, further transferring heat to the hydrogen absorption tube 3, so that the hydrogen absorption material in the hydrogen absorption tube 3 can release hydrogen, the hydrogen releasing process is accompanied with the reduction of volume, thereby the push plate 10 is reset gradually under the elastic force of the reset spring 9, and the cooling liquid is pumped by the sealing sliding of the push plate 10, so that the cooling liquid returns to the pressure relief tank 2 along the transfer pipe 18 and the water cooling pipe 13 under the action of pressure, and the cooling liquid is fully heated, therefore, heat can be fully transferred to the hydrogen absorption material in the hydrogen absorption pipe 3 in the flowing process, so that the hydrogen discharge process can be smoothly carried out;

in the process of hydrogen absorption and hydrogen desorption, heat transfer is comprehensively carried out, and heat accumulation can not occur, so that the hydrogen absorption material is uniformly changed in the hydrogen absorption and hydrogen desorption processes, the risk of stress concentration is reduced, the hydrogen absorption material can not be damaged, the integral use cost is reduced, and the integral safety is also improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a solid-state hydrogen storage tank for magnesium-based hydrogen storage, includes a jar body (1), its characterized in that, the bottom of jar body (1) is fixed with heat transfer case (7), the bottom of heat transfer case (7) is fixed with base (8), the inside heat transfer mechanism that is equipped with of heat transfer case (7), base (8) bottom is equipped with running gear, the lateral wall of the jar body (1) is fixed with pressure release case (2), the lateral wall of the jar body (1) runs through to be fixed with a plurality of hydrogen absorption pipe (3), every the lateral wall of hydrogen absorption pipe (3) all runs through to be inserted and is equipped with air compensating pipe (5), every be equipped with propulsion temperature control mechanism on the hydrogen absorption pipe (3), the lateral wall of the jar body (1) passes through the bolt fastening has closing plate (4), the inside of pressure release case (2) is equipped with pressure release cooling mechanism, the lateral wall of the jar body (1) has seted up two and has shifted chamber (6), a heat transfer mechanism is arranged in the transfer cavity (6), and an inflation inlet (21) is fixed at the upper end of the tank body (1);

the propulsion temperature control mechanism comprises a sliding block (11) in sealed sliding connection with the inner wall of the hydrogen absorption tube (3), a pressure rod (12) is fixed on the side wall of the sliding block (11), a water cooling tube (13) and an evaporation tube (16) are symmetrically fixed on the outer wall of the hydrogen absorption tube (3), a water collecting tube (15) penetrates through and is fixed on the side wall of the water cooling tube (13), and a gas collecting tube (17) penetrates through and is fixed on the side wall of the evaporation tube (16);

pressure release cooling mechanism include with pressure release case (2) inner wall sealing sliding connection's push pedal (10), push pedal (10) are connected with reset spring (9) jointly with pressure release case (2) inner wall, every depression bar (12) all are fixed mutually with push pedal (10), every the lateral wall of water-cooled tube (13) all runs through to be inserted and is equipped with raceway (14), every raceway (14) all run through sealing sliding connection with push pedal (10).

2. The solid-state hydrogen storage tank for magnesium-based hydrogen storage according to claim 1, wherein the heat transfer mechanism comprises a transfer pipe (18) fixed to the inner wall of the transfer chamber (6), the inner wall of the transfer chamber (6) is fixed with a generator (19), and the main shaft of the generator (19) penetrates through the transfer pipe (18) and is fixed with a rotating vane (20).

3. The solid-state hydrogen storage tank for magnesium-based hydrogen storage according to claim 2, wherein the heat exchange mechanism comprises a partition plate (22) fixed on the inner wall of the heat exchange box (7), the side wall of the partition plate (22) is fixed with a heating rod (23) in a penetrating way, and the transfer pipe (18) penetrates through the top of the heat exchange box (7) and is communicated with the inside of the heat exchange box (7).

4. The solid-state hydrogen storage tank for magnesium-based hydrogen storage according to claim 1, wherein the traveling mechanism comprises a motor (24) fixed at the bottom of the base (8), the motor (24) is a double-head servo motor, two output shafts of the motor (24) are both fixed with rotating shafts (25), the ends of the two rotating shafts (25) both penetrate through the side wall of the base (8) and are fixed with rollers (26), and the side wall of the base (8) is fixed with a battery (27).