Water-vapor separation device for fuel cell

Abstract

The utility model provides a fuel cell water vapor separation device which is applied to a hydrogen circulation system, the fuel cell water vapor separation device comprises a shell and a filter, the filter comprises a barrel, a plurality of filter holes are formed in the outer surface of the barrel, a water outlet is formed in the shell, a water outlet hole is formed in the top of the barrel, and the filter holes are communicated with the water outlet hole. And the water outlet hole of the barrel body is connected to the water outlet of the shell. The filter is arranged on the water outlet of the shell of the water-vapor separation device, so that water with impurities separated from the hydrogen circulation system passes through a plurality of filtering holes formed in the barrel of the filter, and the impurities doped in the water are filtered out.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fuel cell water vapor separation device. BACKGROUND

[0002] In the working process of the fuel cell, there is obvious incomplete reaction, that is, a lot of hydrogen does not participate in the reaction. If the unreacted hydrogen is directly discharged into the atmosphere, it is not only a kind of pollution, but also leads to hydrogen waste. In order to solve this problem, a hydrogen recirculation system is usually established to transport the unreacted hydrogen back to the input end, so as to minimize the waste of hydrogen and achieve the purpose of reducing cost. In addition, the hydrogen recirculation system can take out the water (including water vapor) generated by the electrochemical reaction in the stack to improve the humidity of the stack and improve the water management capability. The hydrogen coming out of the stack will enter the water separation box. The water separation box is mainly used to separate hydrogen from water or water vapor. The separated hydrogen enters the circulation system, and the separated water is discharged from the water separation box through the timed opening of the drain valve. However, in this process, hydrogen often carries some impurities (such as carbon fibers) into the water separation box, and these impurities are easy to flow to the drain valve with the separated water. If they are not filtered, the electromagnetic valve will be blocked, which will affect the normal operation of the fuel cell stack. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defect that the water vapor separation device in the prior art lacks a filter, and to provide a fuel cell water vapor separation device.

[0004] The utility model solves the above technical problems through the following technical scheme:

[0005] The utility model provides a kind of fuel cell water vapor separation device, it is applied to hydrogen circulation system, the fuel cell water vapor separation device includes shell and filter, the filter includes cylinder, the outer surface of the cylinder is provided with several filter holes, the shell is provided with water outlet, the top of the cylinder is provided with water outlet hole, the water outlet hole of the cylinder is connected to the water outlet of the shell.

[0006] In the present scheme, by setting filter on the water outlet of water vapor separation device shell, the water separated from hydrogen circulation system with impurities passes through the filter cylinder and the filter hole is opened, so that the impurities mixed in water are filtered out.

[0007] Preferably, the filter screen is provided on the cylinder, the filter screen covers the filter hole, and the pore size of the filter screen is smaller than the pore size of the filter hole on the cylinder.

[0008] In the present scheme, by setting filter screen with smaller pore size than filter hole, the effect of screening impurities can be further improved, and the use performance of fuel cell is improved.

[0009] Preferably, the filter holes are uniformly distributed on the side surface and / or bottom surface of the cylinder.

[0010] In this scheme, by arranging the filter holes on the side surface or bottom surface of the cylinder, the area of water flow can be increased, and the filtering efficiency can be improved.

[0011] Preferably, the pore size of the filter screen is 150-200 μm.

[0012] In this scheme, by setting the pore size of the filter screen to 150-200 μm, the filtering effect can be further improved.

[0013] Preferably, the filter screen is fixedly connected to the cylinder.

[0014] In this scheme, by fixing the filter screen to the cylinder, the firmness of the filter screen can be enhanced, and the problem of loosening and falling off under long-term scouring of water flow can be prevented, so as to affect the filtering effect and improve the service life of the filter screen.

[0015] Preferably, the material of the filter screen is stainless steel.

[0016] In this scheme, since the filter is arranged in the water vapor separation device, the pressure inside the device is high, and if the compressive strength of the filter screen is insufficient, the filter screen will be easily deformed, which will affect the drainage effect. By setting the material of the filter screen to stainless steel, the compressive strength of the filter screen can be improved, and the deformation can be reduced, so as to further improve the service life of the filter screen.

[0017] Preferably, the cylinder is detachably connected to the shell.

[0018] In this scheme, by detachably connecting the cylinder to the shell, the filter can be easily maintained and cleaned.

[0019] Preferably, a connecting portion is arranged on the top of the cylinder, and the connecting portion extends outward along an axial direction perpendicular to the cylinder from the top edge of the cylinder.

[0020] In this scheme, by arranging the connecting portion on the top edge of the cylinder, the contact area of the connecting portion and the end cover of the shell can be increased, so that the cylinder can be more firmly connected to the shell, and the stability of the filter can be improved.

[0021] Preferably, a connecting hole is arranged on the connecting portion, and the cylinder is connected to the shell through the connecting hole by a bolt.

[0022] In the scheme, the connecting holes are arranged on the connecting portion, the cylinder is fixed to the shell by bolts, sufficient connecting strength can be provided while facilitating disassembly and maintenance.

[0023] Preferably, the connecting holes are arranged on both sides of the connecting portion with the cylinder as the center, and at least one connecting hole is arranged on each side.

[0024] In the scheme, the firmness of the cylinder can be further improved by arranging multiple connecting holes.

[0025] The positive progress effect of the utility model lies in:

[0026] The fuel cell water vapor separation device of the utility model, by setting filter on the water vapor separation device shell water outlet, make the hydrogen circulation system in the separation of water with impurities through filter cylinder on the opening of several filter holes, thereby filtering the impurities mixed in the water. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the perspective view of the fuel cell water vapor separation device of the utility model

[0028] Figure 2 It is the front view of the filter of the utility model

[0029] Figure 3 It is the perspective view of the filter of the utility model

[0030] REFERENCE SIGNS:

[0031] Fuel cell water vapor separation device 100

[0032] Shell 1

[0033] Inlet 11

[0034] Outlet 12

[0035] Water outlet 13

[0036] End cover 14

[0037] Inner wall 15

[0038] Filter 2

[0039] Cylinder 21

[0040] Filter hole 22

[0041] Water outlet hole 23

[0042] Side surface 24

[0043] Bottom surface 25

[0044] Connecting portion 26

[0045] Connection hole 27 Detailed Implementation

[0046] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0047] This embodiment provides a fuel cell water vapor separation device 100 with a filter 2, which is applied in a hydrogen cycle system, such as... Figure 1 As shown, the fuel cell water vapor separation device 100 with filter 2 includes a housing 1 and a filter 2. The housing 1 includes an end cap 14, an inner wall 15, an air inlet 11, an air outlet 12, and a water outlet 13. The air inlet 11 and the air outlet 12 are located on the inner wall 15 of the housing 1, and the water outlet 13 is located on the end cap 14 of the housing 1. The air inlet 11 and the air outlet 12 are connected to a hydrogen circulation system. The filter 2 includes a cylindrical body 21. A water outlet 23 is provided at the top of the cylindrical body 21. A plurality of filter holes 22 are provided on the cylindrical body 21, and the plurality of filter holes 22 are located on the outer surface of the cylindrical body 21. The water outlet 23 of the cylindrical body 21 is connected to the water outlet 13 of the end cap 14 of the housing 1.

[0048] Thus, by setting a filter 2 on the end cap 14 of the water vapor separator housing 1, the water containing impurities separated from the hydrogen circulation system passes through a number of filter holes 22 opened on the filter 2 cylinder 21, thereby filtering out the impurities mixed in the water.

[0049] In this embodiment, the diameter of the filter hole 22 is no greater than 3mm, and the specific number is not limited. In other embodiments, it can be adjusted according to the diameter and height of the cylinder 21.

[0050] Specifically, a filter screen is provided on the cylinder 21, and the filter screen covers the filter holes 22. The diameter of the filter screen is smaller than the diameter of the filter holes 22 on the cylinder 21.

[0051] Thus, by setting a filter screen with a smaller aperture than filter hole 22, the effect of removing impurities can be further increased, thereby improving the performance of the fuel cell.

[0052] In this embodiment, the pore size of the filter screen is 150-200 μm. By setting the pore size of the filter screen to 150-200 μm, the filtration effect can be further improved. In other embodiments, those skilled in the art can also select filter screens of other sizes.

[0053] Specifically, the filter holes 22 are evenly distributed on the side surface 24 and / or bottom surface 25 of the cylinder 21.

[0054] Thus, by setting the filter holes 22 on the side surface 24 or bottom surface 25 of the cylinder 21, the area for water flow can be increased, thereby improving the filtration efficiency.

[0055] In this embodiment, the filter holes 22 can be distributed on the side surface 24 of the cylinder 21 or on the bottom surface 25 of the cylinder 21. Preferably, the filter holes 22 are provided on both the side surface 24 and the bottom surface 25 of the cylinder 21, which can significantly improve the filtration efficiency.

[0056] Specifically, the filter screen is fixedly connected to the cylinder 21.

[0057] In this way, by fixing the filter screen to the cylinder 21, the strength of the filter screen can be enhanced, preventing it from loosening and falling off under long-term water flow, thus affecting the filtration effect and extending the service life of the filter screen.

[0058] In this embodiment, the filter screen can be fixedly connected to the cylinder 21 by welding, or it can be integrally formed with the cylinder 21. In other embodiments, those skilled in the art can also choose other fixing and connection methods.

[0059] Specifically, the filter screen is made of stainless steel.

[0060] Therefore, since filter 2 is located inside the water vapor separator, where the internal pressure is high, the filter screen is prone to deformation if its compressive strength is insufficient, which will affect the drainage effect. By using stainless steel as the material for the filter screen, its compressive strength can be increased, deformation can be reduced, and thus the service life of the filter screen can be further extended.

[0061] In this embodiment, the filter screen is preferably made of 316L stainless steel. 316L stainless steel has good compressive strength, which can meet the compressive strength requirements of the filter screen.

[0062] Specifically, the cylinder 21 is detachably connected to the end cap 14 of the housing 1.

[0063] Thus, by detachably connecting the cylinder 21 to the end cap 14 of the housing 1, the filter 2 can be easily maintained and cleaned.

[0064] In this embodiment, the cylinder 21 and the shell 1 can be detachably connected by means of clamp connection, bolt connection, clamping member connection, etc.

[0065] Specifically, such as Figure 2 and Figure 3 As shown, a connecting part 26 is provided at the top of the cylinder 21, and the connecting part 26 extends outward from the top edge of the cylinder 21 in a direction perpendicular to the axial direction of the cylinder 21.

[0066] Thus, by arranging the connecting portion 26 on the top edge of the cylinder body 21, the contact area of the connecting portion 26 with the end cover 14 of the shell 1 can be increased, so that the cylinder body 21 is more firmly connected to the shell 1, and the stability of the filter 2 is improved.

[0067] In this embodiment, the connecting portion 26 can be arranged between the connecting portion 26 and the shell 1 to clamp and fix the cylinder body 21 and the shell 1. Preferably, a connecting hole 27 is arranged on the connecting portion 26, and the cylinder body 21 is connected to the end cover 14 of the shell 1 by a bolt passing through the connecting hole 27.

[0068] Thus, by arranging the connecting hole 27 on the connecting portion 26 and fixing the cylinder body 21 to the shell 1 by a bolt, sufficient connection strength can be provided while facilitating disassembly and maintenance.

[0069] Specifically, the connecting hole 27 is arranged on both sides of the connecting portion 26 centered on the cylinder body 21, and at least one connecting hole 27 is arranged on each side.

[0070] Thus, by arranging multiple connecting holes 27, the firmness of the cylinder body 21 can be further improved.

[0071] In this embodiment, one connecting hole 27 is arranged on each side of the connecting portion 26, and a connecting hole 27 is also arranged at the corresponding position of the shell 1, and a bolt is respectively inserted into the two connecting holes 27 to achieve bolt connection of the cylinder body 21 and the shell 1.

[0072] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and these changes and modifications all fall within the protection scope of the present application.

Claims

1. A fuel cell water vapor separation device applied to a hydrogen circulation system, characterized by, The fuel cell water vapor separation device comprises a shell and a filter, the filter comprises a cylinder, a plurality of filter holes are arranged on the outer surface of the cylinder, the shell is provided with a water outlet, the top of the cylinder is provided with a water outlet hole, and the water outlet hole of the cylinder is connected to the water outlet of the shell.

2. The fuel cell water vapor separation device of claim 1, wherein, A filter screen is arranged on the cylinder, the filter screen covers the filter holes, and the pore size of the filter screen is smaller than that of the filter holes on the cylinder.

3. The fuel cell water vapor separation device of claim 2, wherein, The filter holes are uniformly distributed on the side surface and / or bottom surface of the cylinder.

4. The fuel cell water vapor separation device of claim 2, wherein, The pore size of the filter screen is 150-200 μm.

5. The fuel cell water vapor separation device of claim 2, wherein, The filter screen is fixedly connected to the cylinder.

6. The fuel cell water vapor separation device of claim 2, wherein, The material of the filter screen is stainless steel.

7. The fuel cell water vapor separation device of claim 1, wherein, The cylinder is detachably connected to the shell.

8. The fuel cell water vapor separation device of claim 7, wherein, A connecting portion is arranged on the top of the cylinder, the connecting portion extends outward along the direction perpendicular to the axial direction of the cylinder from the top edge of the cylinder.

9. The fuel cell water vapor separation device of claim 8, wherein, A connecting hole is arranged on the connecting portion, and the cylinder is connected to the shell through the connecting hole by a bolt.

10. The fuel cell water vapor separation device of claim 9, wherein, The connecting holes are arranged on both sides of the connecting portion with the cylinder as the center, and at least one connecting hole is arranged on each side.

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