Labyrinth type hydrogen-water separation device

Abstract

The utility model relates to the technical field of fuel cells, in particular to a labyrinth type hydrogen-water separation device. Comprising a shell, a frame is arranged in the shell, the lower end of one side of the frame is connected with an air inlet pipe, the lower end of the other side of the frame is provided with a drainage pipe, a supporting body is arranged in the frame, the upper portion of the supporting body is a hydrogen drying area, and the lower portion of the supporting body is an exhaust water distribution area; and a gas through hole I is formed in the surface of the support plate at the snakelike turning part. Compared with the prior art, hydrogen and water are separated through the snakelike labyrinth type structure, the hydrogen and water separation efficiency is improved, meanwhile, the hydrogen is dried, and the hydrogen is conveniently recycled.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a labyrinth-type hydrogen-water separation device. Background Art

[0002] In a fuel cell system, the hydrogen coming out of the hydrogen bottle in the hydrogen supply system will contain a large amount of water after passing through the fuel cell stack. In existing technical solutions, fuel cell manufacturers generally recycle hydrogen, but a lot of hydrogen will still be discharged along with the water, which will lead to hydrogen consumption and waste. At the same time, the discharged hydrogen may pose a safety hazard. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a labyrinth-type hydrogen-water separation device.

[0004] To achieve the above objectives, a labyrinth-type hydrogen-water separation device is designed, comprising a shell, a frame provided inside the shell, the lower end of one side of the frame being connected to an air inlet pipe, the lower end of the other side of the frame being provided with a drain pipe, a support body being provided inside the frame, the upper portion of the support body being a hydrogen drying area, the lower portion of the support body being an exhaust and water separation area, the support body comprising several layers of support plates connected in a serpentine shape, and a gas passage hole being provided on the surface of the support plate at the serpentine turning point.

[0005] The side end surface of the support plate abuts against the inner wall of the frame.

[0006] A plurality of drainage baffles are provided in the support body of the exhaust water separation area.

[0007] The shape of the drainage baffle is a broken line.

[0008] Baffles are provided at both ends of the support body in the hydrogen drying zone, and a desiccant is provided between the two baffles.

[0009] The baffle is provided with a plurality of gas passage holes 2.

[0010] A purge inlet pipe is provided on one side of the shell, a purge outlet pipe is provided on the other side of the shell, a first purge solenoid valve is provided on the purge inlet pipe, and a second purge solenoid valve is provided on the purge outlet pipe.

[0011] The upper side of the frame is connected to the exhaust hydrogen storage bottle through a hydrogen bottle port electromagnetic valve.

[0012] A liquid level sensor is provided on one side of the frame, and a hydrogen concentration sensor is provided on the upper inner side of the shell.

[0013] The air inlet pipe is provided with an air inlet valve, and the water discharge pipe is provided with a water discharge valve.

[0014] Compared with the prior art, the utility model separates hydrogen from water through a serpentine labyrinth structure, thereby improving the efficiency of hydrogen-water separation and drying the hydrogen at the same time, thereby facilitating the recycling of the hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the external structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the utility model after removing the frame.

[0018] Figure 4 This is a structural diagram of the exhaust water separation area of ​​the utility model.

[0019] Figure 5 This is a top view of the exhaust water separation area of ​​the utility model.

[0020] Figure 6 This is a schematic diagram of the gas flow in the exhaust water separation area of ​​the utility model.

[0021] Figure 7 This is a structural diagram of the hydrogen drying zone of the utility model.

[0022] Figure 8 This is a schematic diagram of the gas flow in the hydrogen drying area of ​​the present invention.

[0023] Figure 9 This is a schematic diagram of the gas flow after the gas enters through the intake pipe of the utility model.

[0024] Figure 10 This is a schematic diagram of the gas flow after the gas enters through the purge inlet pipe of the utility model. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1 to 10 As shown, a frame 2 is provided in the shell 1, the lower end of one side of the frame 2 is connected to the air inlet pipe 3, and the lower end of the other side of the frame 2 is provided with a drain pipe 4. A support body 5 is provided in the frame, the upper part of the support body 5 is a hydrogen drying area 6, and the lower part of the support body 5 is an exhaust water separation area 7. The support body 5 includes several layers of support plates 8 connected in a serpentine shape, and a gas passage hole 9 is provided on the surface of the support plate 8 at the serpentine turning point.

[0027] The drain pipe 4 passes through the housing 1 and extends to the outside of the housing 1 .

[0028] The side end surface of the support plate 8 abuts against the inner wall of the frame 2 to ensure that the gas flows along the support plate 8 .

[0029] A plurality of drainage baffles 10 are provided in the support body 5 of the exhaust water separation area 7. The drainage baffles 10 are in the shape of a broken line, which has a blocking effect on water and increases the water separation efficiency.

[0030] Baffles 11 are provided at both ends of the support body 5 in the hydrogen drying zone 6, and a desiccant 12 is provided between the two baffles 11. The baffles 11 are provided with a plurality of gas through holes 13 for circulating gas.

[0031] An air intake valve 23 is provided on the air intake pipe 3 , and a water discharge valve 24 is provided on the water discharge pipe 4 .

[0032] A purge inlet pipe 14 is provided on one side of the shell 1 , and a purge outlet pipe 15 is provided on the other side of the shell 1 . A purge solenoid valve 16 is provided on the purge inlet pipe 14 , and a purge solenoid valve 2 17 is provided on the purge outlet pipe 15 .

[0033] The upper side of the frame 2 is connected to an exhaust hydrogen storage bottle 19 via a hydrogen bottle port solenoid valve 18. Dried hydrogen enters the exhaust hydrogen storage bottle 19 through the hydrogen bottle port solenoid valve 18 for collection. When the exhaust hydrogen storage bottle 19 is full, the cover 22 of the housing 1 is opened and the exhaust hydrogen storage bottle 19 is replaced.

[0034] A liquid level sensor 20 is provided on one side of the frame 2. In order to prevent hydrogen from being discharged along with the water, the liquid level sensor 20 is required to monitor the water level. After ensuring that there is a certain amount of water, the drain valve 24 is opened and the water is discharged from the drain pipe 4. Figure 2 As shown, a liquid level min line 26 and a liquid level max line 25 are provided on one side of the frame 2. When the water level is below the liquid level min line 26, the drain valve 24 is closed to prevent hydrogen from being discharged from the drain pipe 4 along the drain valve 24 when the water level is insufficient.

[0035] A hydrogen concentration sensor 21 is provided on the upper inner side of the housing 1 . In consideration of hydrogen leakage safety, hydrogen leakage is detected by the hydrogen concentration sensor 21 .

[0036] When the present invention is used, the mixed gas containing hydrogen and water discharged from the fuel cell is connected to the air inlet pipe 3. The mixed gas first enters the support plate 8 of the exhaust water separation area 7, flows along the serpentine support plate 8, and enters the support plate 8 of the upper layer through the gas through hole 19 at the turning point of the support plate 8. At the same time, under the action of the zigzag drainage baffle 10, the flow direction of the mixed gas is in a zigzag direction, and finally enters the hydrogen drying area 6 through the gas through hole 19. The gas from the exhaust water separation area 7 passes through the gas through hole 2 13 of the baffle 11 on one side, enters the interior of the support body 5, passes through the desiccant 12, and then passes through the gas through hole 2 13 of the baffle on the other side and the gas flow hole 19 of the support plate 8 to enter the upper layer, thereby achieving the purpose of drying hydrogen. Figure 9As shown, the mixed gas passes through the exhaust water separation area and the hydrogen drying area 6 and finally enters the exhaust hydrogen storage bottle 19.

[0037] In specific use, long-term use will make the drying effect of the desiccant worse, such as Figure 10 As shown, at this time, dry gas can be blown in from the purge inlet pipe 14 to dry the internal components of the frame 2 such as the desiccant and the support plate 8 , and finally the gas is discharged from the purge outlet pipe 15 and the drain pipe 4 .

Claims

1. A labyrinth-type hydrogen-water separation device, comprising a housing, characterized in that: The housing (1) is provided with a frame (2), the lower end of one side of the frame (2) is connected to the air inlet pipe (3), the lower end of the other side of the frame (2) is provided with a drain pipe (4), a support body (5) is provided in the frame, the upper part of the support body (5) is a hydrogen drying area (6), the lower part of the support body (5) is an exhaust water separation area (7), the support body (5) includes a plurality of layers of support plates (8) connected in a serpentine shape, and a gas passage hole (9) is provided on the surface of the support plate (8) at the serpentine turning point.

2. The labyrinth-type hydrogen-water separation device according to claim 1, characterized in that: The side end surface of the support plate (8) abuts against the inner wall of the frame (2).

3. The labyrinth-type hydrogen-water separation device according to claim 1, characterized in that: A plurality of drainage baffles (10) are provided in the support body (5) of the exhaust water separation area (7).

4. The labyrinth-type hydrogen-water separation device according to claim 3, characterized in that: The drainage baffle (10) is in the shape of a broken line.

5. The labyrinth-type hydrogen-water separation device according to claim 1, characterized in that: Baffles (11) are provided at both ends of the support body (5) in the hydrogen drying zone (6), and a desiccant (12) is provided between the two baffles (11).

6. The labyrinth-type hydrogen-water separation device according to claim 5, characterized in that: The baffle (11) is provided with a plurality of gas passage holes (13).

7. The labyrinth-type hydrogen-water separation device according to claim 1, characterized in that: A purge inlet pipe (14) is provided on one side of the housing (1), and a purge outlet pipe (15) is provided on the other side of the housing (1). A purge solenoid valve 1 (16) is provided on the purge inlet pipe (14), and a purge solenoid valve 2 (17) is provided on the purge outlet pipe (15).

8. The labyrinth-type hydrogen-water separation device according to claim 1, characterized in that: The upper side of the frame (2) is connected to the exhaust hydrogen storage bottle (19) via the hydrogen bottle mouth electromagnetic valve (18).

9. The labyrinth-type hydrogen-water separation device according to claim 1, characterized in that: A liquid level sensor (20) is provided on one side of the frame (2), and a hydrogen concentration sensor (21) is provided on the upper inner side of the housing (1).

10. The labyrinth-type hydrogen-water separation device according to claim 1, characterized in that: The air inlet pipe (3) is provided with an air inlet valve (23), and the water discharge pipe (4) is provided with a water discharge valve (24).

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