A portable chemical hydrogen fuel cartridge

Abstract

A novel portable chemical hydrogen fuel cartridge comprises a fuel cartridge body provided with a water inlet and an air outlet, and the fuel cartridge body is divided into the following parts in the direction of movement of hydrogen: a preparation chamber: a reaction device for preparing hydrogen is arranged in the preparation chamber, and a water inlet and a plurality of air outlets are arranged on the reaction device; a dewatering chamber: one end of the dewatering chamber is connected with the preparation chamber, and the other end is connected with the filtering chamber, and a water-blocking and air-permeable layer is arranged between the dewatering chamber and the filtering chamber; a filtering chamber: a drying layer is arranged at one end of the filtering chamber away from the dewatering chamber. The fuel cartridge has the characteristics of rapid and controllable hydrogen production and simultaneous dewatering and drying, and is easy to control and carry.

Description

Technical Field

[0001] The invention belongs to the technical field of hydrogen preparation and supply, and in particular relates to a novel portable chemical hydrogen fuel box. Background Art

[0002] At present, there are several emergency hydrogen supply schemes for portable fuel cells that are difficult to use hydrogen in the wild, including hydrogen storage in hydrogen bottles, hydrogen storage materials, methanol reforming hydrogen production, chemical hydrogen production (sodium borohydride), etc.; due to the disadvantages of heavy methanol hydrogen production such as large equipment size and weight, high cost, and long startup time, it cannot meet the portability requirements of meteorological hydrogen production. For example, a high-efficiency hydrogen production system disclosed in the document with authorization number CN202808344 has the above problems; and the chemical hydrogen production system based on sodium borohydride hydrogen production, such as the document with authorization number CN204022465, discloses a portable hydrogen production-supply system, including a storage container for storing hydrogen production agent, a reactor as a hydrogen production site, and a purification device for filtering and generating hydrogen. However, the hydrogen prepared by this scheme carries a large amount of water vapor, and it is extremely inconvenient to add reactants to the reactor and pour out the residues, and the hydrogen production effect of the reaction is not good. Summary of the invention

[0003] The purpose of the present invention is to provide a novel portable chemical hydrogen fuel box, which has the characteristics of being able to remove water and dry at the same time during the hydrogen production process, and is easy to control and carry.

[0004] In order to achieve the above object, the technical solution of the present invention is as follows:

[0005] A novel portable chemical hydrogen fuel box includes a fuel box body with a water inlet and a gas outlet. The fuel box body is divided into the following parts along the movement direction of hydrogen:

[0006] Preparation chamber: A reaction device for preparing hydrogen is arranged in the preparation chamber, and a water inlet and a plurality of gas outlets are provided on the reaction device;

[0007] Dewatering chamber: one end of the dewatering chamber is connected to the preparation chamber, and the other end is connected to the filtration chamber. A water-blocking and air-permeable layer is provided between the dewatering chamber and the filtration chamber;

[0008] Filter chamber: A drying layer is arranged at one end of the filter chamber away from the water removal chamber.

[0009] In the present design, the internal space of the fuel box is divided into three chambers along the direction of hydrogen movement: a preparation chamber, a dehydration chamber, and a filtration chamber. The prepared gas passes through each chamber in turn for dehydration and drying, so that the prepared hydrogen has a higher purity and the dehydration and drying efficiency is higher.

[0010] Furthermore, a first partition is provided in the water removal chamber, a gas delivery port connected to a gas delivery pipeline is provided on the first partition, and a speed regulating valve is installed on the gas delivery pipeline.

[0011] In the design of this scheme, the setting of the baffle turns a part of the space in the water removal chamber into a gas pre-storage space. The gas is enriched in the pre-storage space and is sent to the water-blocking and breathable layer through a speed-regulating valve, so that the gas accumulated in the water-blocking and breathable layer can be controlled, which is beneficial for the gas to pass through the water-blocking and breathable layer, making the water removal more efficient. At the same time, if a large amount of gas accumulates in the water-blocking and breathable layer, it is easy to produce hydrogen explosion. This design can reduce safety hazards.

[0012] Furthermore, the reaction device is provided with a water pipe passing through the water inlet, and a plurality of water outlet holes are opened on the section of the water pipe located inside the reaction device; or the reaction device is provided with a water pipe passing through the reaction device body, and a plurality of water outlet holes are opened on the section of the water pipe located inside the reaction device.

[0013] Preferably, the water delivery pipe is detachably connected to a fixed pipe arranged on the side wall of the fuel box body, preferably a threaded connection, and a discharge port may be opened on the fuel box body, and a top cover is arranged at the discharge port.

[0014] In the design of this scheme, the reaction device can be disassembled as a whole, which is convenient for adding reaction materials, checking the reaction device and other operations. The reaction device realizes the overall disassembly and assembly function through the detachable connection between the water pipe and the fixed pipe fixedly installed on the inner wall of the fuel box.

[0015] Preferably, the reaction device comprises a first shell, a second shell, and a fastener for fixing the connection between the first shell and the second shell, and the water delivery port is arranged at the connection between the first shell and the second shell.

[0016] Preferably, the fastener comprises a first fixing member and a second fixing member, and a through hole is provided at the connection between the first fixing member and the second fixing member for the water pipe to pass through.

[0017] In the design of this scheme, the first shell and the second shell are fixed and assembled into a complete box body by fixing parts. When replacing the reaction material, the reaction material can be easily added or replaced by simply removing the fixing parts, which is very convenient; the fasteners include a first fixing part for fixing the first shell and the second shell in the vertical direction / longitudinal connection and a second fixing part for fixing the first shell and the second shell in the horizontal direction / transverse connection, specifically, a "cross" structure with raised blocks at all four ends.

[0018] Furthermore, elastic members are provided at the ends of the first fixing member and the second fixing member, and the elastic members include a fixed block arranged on the surface of a raised block opened at the end of the first fixing member or the second fixing member, an elastic block arranged in a fixed groove opened on the surface of the fixed block, and a movable rod connected to the elastic block, and the movable rod moves in the movable groove through a fixed rod arranged in a movable groove opened on the side wall surface of the fixed groove.

[0019] Furthermore, a spring is sleeved on the fixed rod, one end of the spring is connected to the wall of the movable groove, and the other end of the spring is connected to the movable rod.

[0020] Preferably, the fuel cartridge device comprises a main hydrogen production raw material of sodium borohydride mixed with a catalyst, wherein the catalyst is mainly used to catalyze the hydrolysis of sodium borohydride to produce hydrogen, and is a catalyst mainly loaded with multiple active metals.

[0021] Preferably, the material of the water-blocking and breathable layer is mainly a hydrophobic material, such as polytetrafluoroethylene, etc.; the material of the drying layer is mainly a water-absorbing material, such as molecular sieve, etc.

[0022] In summary, the present invention has the following beneficial effects:

[0023] The fuel box designed in this scheme has the characteristics of rapid and controllable hydrogen production and simultaneous dehydration and drying. It is easy to control and carry. In addition, the reaction device can be disassembled in whole or in part to facilitate the addition and replacement of reaction materials. At the same time, the entire fuel box has lower safety risks than traditional hydrogen preparation fuel boxes and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the reaction device in the present invention.

[0026] Figure 3 It is a schematic diagram of the structure of the reaction device in the present invention.

[0027] Figure 4 It is a schematic diagram of the structure of the fastener in the present invention.

[0028] Figure 5 It is a schematic diagram of the structure of the elastic member in the present invention.

[0029] Description of the drawings: preparation chamber a, water removal chamber b, filter chamber c, 1 fuel box, 11 water inlet, 12 air outlet, 13 water-blocking and breathable layer, 14 drying layer, 15 first partition, 16 gas pipeline, 161 speed regulating valve, 17 fixed pipe, 171 water pump, 172 external thread, 173 first bearing, 2 reaction device, 21 water inlet, 22 air outlet, 23 first shell, 231 discharge port, 232 top cover, 24 second shell, 25 water pipe, 251 water outlet, 252 second bearing, 26 fastener, 261 first fixing member, 262 second fixing member, 263 through hole, 264 elastic member, 264a fixed block, 264a-1 fixed groove, 264a-2 movable groove, 264b elastic block, 264b-1 movable rod, 264b-2 connecting block, 264b-3 fixed rod, 264b-4 spring. DETAILED DESCRIPTION

[0030] Example 1

[0031] As attached Figures 1 to 3 As shown, a novel portable chemical hydrogen fuel cartridge is provided, wherein an air outlet 12 is provided on the top of a fuel cartridge body 1, a water inlet 11 is provided on the lower end of a side wall, a reaction device 2 is provided on the top of the fuel cartridge body 1, a plurality of air outlets 22, a water delivery port 21 and a material discharge port 231 provided with a top cover 232 are provided on the reaction device 2, the water delivery port 21 is connected to a water delivery pipe 25, the water delivery pipe 25 is connected to a fixed pipe 17 provided on the side wall of the fuel cartridge 1, and is used for delivering water into the reaction device 2, a first bearing 173 is sleeved at a connection between the fixed pipe 17 and the side wall of the fuel cartridge 1, and a water pump 171 with adjustable water volume is provided on the fixed pipe 17, and is used for controlling the water delivery volume, the end of the water delivery pipe 25 located in the reaction device body 2 is closed, and a plurality of water outlets 251 are provided on the pipe section of the water delivery pipe 25 located in the reaction device 2, so that water can be in contact with the reaction material as evenly as possible when added, so that the reaction is more thorough.

[0032] On the reaction device, a first partition 15, a water-blocking and air-permeable layer 13 and a drying layer 14 are sequentially installed on the side wall of the fuel box body 1. A gas pipeline 16 with a speed regulating valve 161 is opened on the first partition 15 for conveying gas upward at a constant speed to reduce the accumulation of hydrogen at the water-blocking and air-permeable layer to cause the hidden danger of explosion. Specifically, the first partition 15 and the water-blocking and air-permeable layer 13 can be an inverted "V"-shaped roof-type structure. The water-blocking and air-permeable layer 13 is arranged in this way to strengthen the contact between hydrogen and the water-blocking and air-permeable layer and increase the water removal efficiency. The design of the first partition 15 is conducive to increasing the gas storage capacity of the temporary storage chamber, and at the same time, it can also allow water falling on the first partition 15 to slide to both sides and drain water through the drainage port arranged at the lowest point of the first partition 15.

[0033] In this embodiment, the water-blocking and breathable layer is polytetrafluoroethylene, and the drying layer is a breathable drying layer filled with molecular sieves.

[0034] The working principle of this embodiment:

[0035] Use a pump to slowly inject water into the reaction device. When water contacts the material, it immediately reacts to produce hydrogen. The hydrogen moves upward through the vent, passes through the gas pipeline, the water-blocking and breathable layer, the drying layer in sequence, and is finally discharged from the vent on the top of the fuel box. Water vapor gathers at the water-blocking and breathable layer and falls to the first partition and flows out from the drain port.

[0036] Example 2

[0037] As attached Figures 3-5 As shown, the difference between this embodiment and embodiment 1 is that a water pipe 25 is passed through the reaction device 2 in the horizontal direction, and a second bearing 25 is sleeved at the connection between the water pipe 25 and the reaction device 2. Both ends of the water pipe 25 are provided with internal threads, and a fixed pipe 17 fixedly installed on the inner wall of the fuel box 1 is provided with a matching external thread near the reaction device 2. The water pipe 25 is connected to the fixed pipe 17 so that the reaction device 2 is fixed and water flows into the water pipe 25 through the fixed pipe 17. A plurality of water outlet holes 251 of the same size are opened on the pipe section of the water pipe 25 located inside the reaction device 2, so that water can contact the reaction material as evenly as possible when added, so that the reaction is more thorough. At the same time, due to the threaded connection, the reaction device 2 can be detachably installed, which is convenient for adding and replacing reaction materials.

[0038] In order to facilitate the replacement of materials, the reaction device is composed of an upper first shell 23 and a lower second shell 24. The fastener 26 is used to reinforce the connection between the first shell and the second shell. The fastener 26 is divided into a first fixing member 261 fastened in the vertical direction and a second fastener fastened in the horizontal direction. The first fixing member and the second fixing member are welded at the center to form a "cross" fastener. A through hole 263 is opened at the center for the water pipe 25 to pass through. The four ends of the fastener 26 are provided with elastic members 264 for further elastic reinforcement. The elastic member 264 includes a fixing member 261 arranged on the end surface of the fastener 26. Block 264a, an elastic block 264b arranged in a fixed groove 264a-1 opened on the surface of the fixed block, a connecting block 264b-2 connected to the elastic block, and a movable rod 264b-1 connected to the connecting block 264b-2. A channel is opened on the movable rod 264b-1 to allow the fixed rod 264b-3 to pass through. The fixed rod 264b-3 is installed in the movable groove 264a-2 opened on the groove wall of the fixed groove 264a-1. A spring 264b-4 is sleeved on the fixed rod 264b-3. One end of the spring 264b-4 is connected to the groove wall of the movable groove 264a-2, and the other end is connected to the movable rod 264b-1.

[0039] The working principle of this embodiment is the same as that of Embodiment 1.

[0040] Example 3

[0041] The difference between this embodiment and embodiment 2 is that the reaction device is composed of a first shell on the left and a second shell on the right (not marked in the drawings), and the fasteners are used to reinforce the connection between the first shell and the second shell at both ends. The fasteners are divided into first fasteners fastened longitudinally and second fasteners fastened transversely. The first fasteners and the second fasteners are welded at the center to form a "cross" fastener, and a through hole is opened at the center for the discharge port to pass through.

[0042] The working principle of this embodiment is the same as that of Embodiment 1.

[0043] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A portable chemical hydrogen fuel cartridge, comprising a fuel cartridge body (1) having a water inlet (11) and a gas outlet (12), characterized in that: The fuel box body (1) is divided into a preparation chamber, a water removal chamber, and a filtration chamber in sequence along the movement direction of hydrogen; A reaction device (2) for preparing hydrogen is arranged in the preparation chamber, and a water inlet (21) and a plurality of gas outlets (22) are provided on the reaction device (2); One end of the water removal chamber is connected to the preparation chamber, and the other end is connected to the filtration chamber, and a water-blocking and air-permeable layer (13) is provided between the water removal chamber and the filtration chamber; A drying layer (14) is provided at one end of the filter cavity away from the water removal cavity; A first partition (15) is also provided in the dewatering chamber, and a gas delivery port connected to a gas delivery pipeline (16) is provided on the first partition (15), and a speed regulating valve (161) is installed on the gas delivery pipeline (16); The reaction device (2) comprises a first shell (23), a second shell (24), and a fastener (26) for fixing the connection between the first shell and the second shell, and the water delivery port (21) is arranged at the connection between the first shell (23) and the second shell (24); The fastener (26) comprises a first fixing member (261) and a second fixing member (262); a through hole (263) is provided at the connection between the first fixing member (261) and the second fixing member (262); and elastic members (264) are provided at the ends of the first fixing member (261) and the second fixing member (262); The elastic member (264) comprises a fixed block (264a) arranged on the end surface of the first fixed member (261) or the second fixed member (262), an elastic block (264b) arranged in a fixed groove (264a-1) opened on the surface of the fixed block (264a), and a movable rod (264b-1) connected to the elastic block (264b), wherein the movable rod (264b-1) moves in the movable groove (264a-2) through a fixed rod (264b-3) arranged in a movable groove (264a-2) opened on the side wall surface of the fixed groove (264a-1).

2. A portable chemical hydrogen fuel cartridge according to claim 1, characterized in that: The reaction device (2) is provided with a water delivery pipe (25) passing through the water delivery port (21), and a plurality of water outlet holes (251) are provided on a section of the water delivery pipe (25) located inside the reaction device (2).

3. A portable chemical hydrogen fuel cartridge according to claim 1, characterized in that: The reaction device (2) is provided with a water pipe (25) passing through the reaction device body, and a plurality of water outlet holes (251) are provided on a section of the water pipe (25) located inside the reaction device (2).

4. A portable chemical hydrogen fuel cartridge according to claim 3, characterized in that: The water delivery pipe (25) is detachably connected to a fixing pipe (17) arranged on a side wall of the fuel box body (1).

5. A portable chemical hydrogen fuel cartridge according to claim 1, characterized in that: A spring (264b-4) is sleeved on the fixed rod (264b-3); one end of the spring (264b-4) is connected to the groove wall of the movable groove (264a-2), and the other end is connected to the movable rod (264b-1).

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