Hydrogen recovery device for hydrogen fuel cell

Abstract

The utility model relates to the technical field of hydrogen fuel cells, and discloses a hydrogen recovery device for a hydrogen fuel cell, the hydrogen recovery device comprises a hydrogen fuel cell body and a hydrogen storage tank body, the hydrogen fuel cell body and the hydrogen storage tank body are communicated with each other through a connecting pipe, the top of the hydrogen storage tank body is connected with a hydrogen outlet pipe, and the hydrogen outlet pipe is connected with the hydrogen storage tank body. The bottom of the hydrogen storage tank body is connected with a blow-off pipe; electromagnetic valves are mounted on the hydrogen outlet pipe and the blow-off pipe; embedded plates are fixed at the two ends of the hydrogen storage tank body; by arranging the sealing cover, the embedded plate, the fixing bolt, the positioning plate, the sealing ring and the positioning groove, the two ends of the hydrogen storage tank body can be opened, then subsequent overhauling of the hydrogen storage tank body is facilitated, the situation that the whole hydrogen storage tank body needs to be replaced traditionally is avoided conveniently under the condition that the hydrogen storage tank body can be overhauled successfully, the replacement cost is reduced, and the replacement efficiency is improved. And the detachable hydrogen storage tank body is also convenient for recycling treatment when the hydrogen storage tank body is scrapped subsequently, so that the practicability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen fuel cells, and in particular to a hydrogen recovery device for hydrogen fuel cells. Background Art

[0002] A hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. Its basic principle is the reverse reaction of water electrolysis, where hydrogen and oxygen are supplied to the anode and cathode respectively. After hydrogen diffuses outward through the anode and reacts with the electrolyte, it releases electrons and reaches the cathode through an external load.

[0003] When a hydrogen fuel cell is running, it will produce water vapor and hydrogen. Currently, a hydrogen storage tank is connected to the hydrogen fuel cell to separate the water vapor from the hydrogen. However, the traditional hydrogen storage tank is in a closed form. Therefore, when the inside of the hydrogen storage tank is damaged, it is inconvenient to repair it during subsequent vehicle maintenance. However, overall replacement will greatly increase the replacement cost and it is inconvenient to reuse it after repair. Utility Model Content

[0004] In order to solve the problem, the present application provides a hydrogen recovery device for a hydrogen fuel cell.

[0005] The hydrogen recovery device for hydrogen fuel cells provided in this application adopts the following technical solution:

[0006] A hydrogen recovery device for a hydrogen fuel cell comprises a hydrogen fuel cell body and a hydrogen storage tank body, wherein the hydrogen fuel cell body and the hydrogen storage tank body are connected to each other via a connecting pipe, a hydrogen outlet pipe is connected to the top of the hydrogen storage tank body, a water discharge pipe is connected to the bottom of the hydrogen storage tank body, and electromagnetic valves are installed on the hydrogen outlet pipe and the water discharge pipe; embedded plates are fixed at both ends of the hydrogen storage tank body; and a sealing mechanism is also included, wherein two sealing mechanisms are respectively installed at the two ends of the hydrogen storage tank body for sealing the hydrogen storage tank body.

[0007] Preferably, the sealing mechanism comprises sealing covers sleeved on both ends of the hydrogen storage tank body, a sealing groove is provided on the inner side of the sealing cover, and the sealing groove is adapted to the embedded plate.

[0008] Preferably, a plurality of positioning plates are fixed on the hydrogen storage tank body, a plurality of positioning grooves are opened on the sealing cover, the positioning plates are matched with the positioning grooves, and fixing bolts are screwed on the sealing cover and the positioning plates.

[0009] Preferably, an isolation plate is fixed inside the hydrogen storage tank body, a plurality of circular holes are formed on the isolation plate, and the isolation plate divides the interior of the hydrogen storage tank body into an upper chamber and a lower chamber.

[0010] Preferably, a reinforcing rod is connected and fixed between two horizontally corresponding positioning plates.

[0011] Preferably, a plurality of reinforcing rings are fixed to the outer wall of the hydrogen storage tank body.

[0012] Preferably, a sealing ring is fixed in the sealing groove, and the sealing ring is made of rubber.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] By providing a sealing cover, an embedded plate, fixing bolts, a positioning plate, a sealing ring and a positioning groove, both ends of the hydrogen storage tank body can be opened, thereby facilitating the subsequent maintenance of the hydrogen storage tank body. This makes it possible to avoid the traditional need to replace the entire hydrogen storage tank body under the condition that the hydrogen storage tank body can be successfully maintained, thereby reducing the replacement cost. In addition, the detachable hydrogen storage tank body is also convenient for its subsequent recycling when it is scrapped, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the hydrogen fuel cell and the hydrogen storage tank;

[0016] Figure 2 This is a schematic diagram of the structure after the hydrogen storage tank is opened;

[0017] Figure 3 It is a schematic diagram of the structure of the sealing cover in section and with a partial enlargement.

[0018] Explanation of the accompanying drawings: 1. Hydrogen fuel cell body; 2. Hydrogen storage tank body; 3. Connecting pipe; 4. Hydrogen outlet pipe; 5. Drain pipe; 6. Sealing cover; 7. Reinforcement rod; 8. Strengthening ring; 9. Embedded plate; 10. Fixing bolt; 11. Isolation plate; 12. Positioning plate; 13. Sealing groove; 14. Sealing ring; 15. Positioning groove. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-Figure 3 This application is described in further detail.

[0020] The present application embodiment discloses a hydrogen recovery device for a hydrogen fuel cell. Figure 1-Figure 3, a hydrogen recovery device for a hydrogen fuel cell, comprising a hydrogen fuel cell body 1 and a hydrogen storage tank body 2, the hydrogen fuel cell body 1 and the hydrogen storage tank body 2 are connected to each other through a connecting pipe 3, a hydrogen outlet pipe 4 is connected to the top of the hydrogen storage tank body 2, a drain pipe 5 is connected to the bottom of the hydrogen storage tank body 2, and electromagnetic valves are installed on the hydrogen outlet pipe 4 and the drain pipe 5; embedded plates 9 are fixed at both ends of the hydrogen storage tank body 2; and a sealing mechanism is also included, the two sealing mechanisms are respectively installed at both ends of the hydrogen storage tank body 2, and are used to seal the hydrogen storage tank body 2, the sealing mechanism includes a sealing cover 6 sleeved on both ends of the hydrogen storage tank body 2, a sealing groove 13 is opened on the inner side of the sealing cover 6, and the sealing groove 13 is adapted to the embedded plate 9, a plurality of positioning plates 12 are fixed on the hydrogen storage tank body 2, a plurality of positioning grooves 15 are opened on the sealing cover 6, and the positioning plate 12 is adapted to the positioning groove 15, and fixing bolts 10 are screwed on the sealing cover 6 and the positioning plate 12.

[0021] When the hydrogen fuel cell body 1 reacts and discharges, the generated water vapor and hydrogen will flow into the hydrogen storage tank body 2 through the connecting pipe 3, and will continue to gather in the hydrogen storage tank body 2. The water vapor will gather into water droplets and drip on the lower part of the hydrogen storage tank body 2, while the hydrogen will gather in the upper part of the hydrogen storage tank body 2 due to its low density, thereby realizing the recovery of hydrogen. When disassembling, the fixing bolts 10 of the fixed sealing cover 6 are respectively screwed down, and then the sealing cover 6 is pried to separate it from the hydrogen storage tank body 2. The operation is simple and convenient to use. By setting the sealing cover 6, the embedded plate 9, the fixing bolts 10, the positioning plate 12, the sealing ring 14 and the positioning groove 15, the two ends of the hydrogen storage tank body 2 can be opened, thereby facilitating the subsequent maintenance of the hydrogen storage tank body 2, thereby facilitating the successful maintenance of the hydrogen storage tank body 2, avoiding the traditional need to replace the entire hydrogen storage tank body 2, reducing the replacement cost, and the detachable hydrogen storage tank body 2 is also convenient for its subsequent recycling when it is scrapped, thereby improving practicality.

[0022] In this embodiment, if Figure 1 and Figure 2 As shown, an isolation plate 11 is fixed inside the hydrogen storage tank body 2, and a plurality of circular holes are opened on the isolation plate 11. The isolation plate 11 divides the interior of the hydrogen storage tank body 2 into an upper chamber and a lower chamber. The upper chamber is a hydrogen storage chamber, and the lower chamber is a water storage part. Since hydrogen is difficult to dissolve in water, this setting can effectively separate water vapor and hydrogen, making hydrogen recovery convenient.

[0023] In this embodiment, if Figure 1 and Figure 2 As shown, a reinforcing rod 7 is connected and fixed between two horizontally corresponding positioning plates 12, and a plurality of reinforcing rings 8 are fixed to the outer wall of the hydrogen storage tank body 2. This arrangement is convenient for improving the overall structural strength of the hydrogen storage tank body 2, improving its explosion-proof effect, and thus improving safety.

[0024] In this embodiment, if Figure 3 As shown, a sealing ring 14 is fixed in the sealing groove 13. The sealing ring 14 is made of rubber. When the embedded plate 9 is inserted into the sealing groove 13, an extrusion effect is generated between the embedded plate 9 and the sealing ring 14, thereby improving the sealing performance.

[0025] The implementation principle of the hydrogen recovery device for hydrogen fuel cells in the embodiment of the present application is as follows: when the hydrogen fuel cell body 1 reacts and discharges, the generated water vapor and hydrogen will flow into the hydrogen storage tank body 2 through the connecting pipe 3, and will continuously gather in the hydrogen storage tank body 2. The water vapor will gather into water droplets and drip on the lower part of the hydrogen storage tank body 2, while the hydrogen will gather in the upper part of the hydrogen storage tank body 2 due to its low density, thereby realizing the recovery of hydrogen. When disassembling, the fixing bolts 10 for fixing the sealing cover 6 are respectively screwed down, and then the sealing cover 6 is pried to separate it from the hydrogen storage tank body 2. The operation is simple and convenient to use. By setting the sealing cover 6, the embedded plate 9, the fixing bolts 10, the positioning plate 12, the sealing ring 14 and the positioning groove 15, the two ends of the hydrogen storage tank body 2 can be opened, thereby facilitating the subsequent maintenance of the hydrogen storage tank body 2, thereby facilitating the replacement of the hydrogen storage tank body 2 as a whole under the condition that the hydrogen storage tank body 2 can be successfully maintained, thereby reducing the replacement cost, and the detachable hydrogen storage tank body 2 is also convenient for its subsequent recycling and processing when it is scrapped, thereby improving practicality.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0029] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydrogen recovery device for a hydrogen fuel cell, comprising a hydrogen fuel cell body (1) and a hydrogen storage tank body (2), wherein the hydrogen fuel cell body (1) and the hydrogen storage tank body (2) are connected to each other via a connecting pipe (3), characterized in that: The top of the hydrogen storage tank body (2) is connected to a hydrogen outlet pipe (4), the bottom of the hydrogen storage tank body (2) is connected to a water discharge pipe (5), and both the hydrogen outlet pipe (4) and the water discharge pipe (5) are equipped with solenoid valves; Embedded plates (9) are fixed at both ends of the hydrogen storage tank body (2); It also comprises a sealing mechanism, wherein two sealing mechanisms are respectively installed at two ends of the hydrogen storage tank body (2) and are used to seal the hydrogen storage tank body (2).

2. The hydrogen recovery device for a hydrogen fuel cell according to claim 1, characterized in that: The sealing mechanism comprises a sealing cover (6) sleeved on both ends of the hydrogen storage tank body (2), a sealing groove (13) is provided on the inner side of the sealing cover (6), and the sealing groove (13) is adapted to the embedded plate (9).

3. The hydrogen recovery device for a hydrogen fuel cell according to claim 2, characterized in that: A plurality of positioning plates (12) are fixed on the hydrogen storage tank body (2), a plurality of positioning grooves (15) are provided on the sealing cover (6), the positioning plates (12) are matched with the positioning grooves (15), and fixing bolts (10) are screwed on the sealing cover (6) and the positioning plates (12).

4. The hydrogen recovery device for a hydrogen fuel cell according to claim 1, characterized in that: An isolation plate (11) is fixed inside the hydrogen storage tank body (2), a plurality of circular holes are opened on the isolation plate (11), and the isolation plate (11) divides the inside of the hydrogen storage tank body (2) into an upper chamber and a lower chamber.

5. The hydrogen recovery device for a hydrogen fuel cell according to claim 3, characterized in that: A reinforcing rod (7) is connected and fixed between two horizontally corresponding positioning plates (12).

6. The hydrogen recovery device for a hydrogen fuel cell according to claim 1, characterized in that: A plurality of reinforcing rings (8) are fixed to the outer wall of the hydrogen storage tank body (2).

7. The hydrogen recovery device for a hydrogen fuel cell according to claim 2, characterized in that: A sealing ring (14) is fixed in the sealing groove (13), and the sealing ring (14) is made of rubber.

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