CN210893570U

CN210893570U - Fuel cell stack gas tightness detection device

Info

Publication number: CN210893570U
Application number: CN201921671434.9U
Authority: CN
Inventors: 蔡信; 赵一帆; 毛磊; 赵文杰; 卢宇峰
Original assignee: Jiangsu Huade Hydrogen Energy Technology Co ltd
Current assignee: Jiangsu Huade Hydrogen Energy Technology Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-06-30
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a fuel cell pile airtightness detection device, which comprises a groove body, a fuel cell pile and a fixing plate, wherein a plurality of support blocks are fixed on the inner wall of the groove body, the fuel cell pile is supported on the upper end of the support blocks, the multiple ends of the fuel cell pile are respectively communicated with a first connecting pipe and a third connecting pipe, a first valve and a pressure sensor are sequentially arranged on the first connecting pipe from left to right, one side of the pressure sensor is electrically connected with a multifunctional digital display, the right end of the first connecting pipe is communicated with a second connecting pipe, and a second valve is arranged on the second connecting pipe. The leakage condition of the bubble is observed through the bubbling amount, and the bubble detecting instrument is simple and visual and has low cost.

Description

Fuel cell stack gas tightness detection device

Technical Field

The utility model relates to a fuel cell technical field specifically is a fuel cell pile gas tightness detection device.

Background

The stack is not a stack of actual cells, but the term fuel cell refers to a stack of a plurality of fuel cells in order to obtain a voltage for practical use. The key to the stack is the materials and fabrication techniques that make up the stack. The material must have sufficient chemical and thermal stability. The electrochemical performance must meet the requirements, and the technical conditions must be consistent to obtain good benefits. The volume and weight should be minimized.

However, no standard method and equipment for detecting the air tightness of the galvanic pile exist in the industry at present, and the quality of detection of the galvanic pile by various manufacturers is uneven, so that some galvanic piles cannot be normally used, and the performance of the fuel cell is influenced; meanwhile, the mode adopted by some manufacturers in the aspect of galvanic pile air tightness detection is too complex, the steps are complex, and the production cost is increased. Accordingly, those skilled in the art have provided a fuel cell stack gas tightness detection device to solve the problems set forth in the background art.

Disclosure of Invention

The utility model aims at providing a fuel cell pile gas tightness detection device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a fuel cell pile gas tightness detection device, includes cell body, fuel cell pile, the fixed plate, the inner wall of cell body is fixed with a plurality of tray, the fuel cell pile is put in the support of upper end of tray, the multiterminal intercommunication respectively of fuel cell pile has connecting pipe one, connecting pipe three, the going up of connecting pipe one has set gradually valve one and pressure sensor from a left side to the right side, pressure sensor one side electricity is connected with multi-functional digital display, the right-hand member intercommunication of connecting pipe one has connecting pipe two, be provided with valve two on the connecting pipe two, the lower extreme of connecting pipe two is intake pipe even, be provided with pressure digital display between intake pipe and the connecting pipe two.

As a further aspect of the present invention: a fixing plate is arranged on the right side of the tank body, and the surface of the fixing plate is fixed with the first connecting pipe, the second connecting pipe and the air inlet pipe; the left end of the first connecting pipe is provided with an annular sucking disc, the first connecting pipe is in threaded connection with a fixing sleeve, and the annular sucking disc and the fixing sleeve form a fixing piece.

As a further aspect of the present invention: a fixing assembly is fixed on the surface of the supporting plate and comprises a fixing ring and a threaded sleeve, the fixing ring is fixed with the supporting plate, the outer side of the fixing ring is in threaded connection with the threaded sleeve, and a third connecting pipe is fixed in the threaded sleeve in a threaded manner; the left side of the tank body is communicated with a water inlet, liquid is injected into the tank body to reflect the air tightness condition, and a third connecting pipe is injected into the liquid; the bottom of the tank body is fixed with a plurality of supporting legs, the lower end of the fixed plate is fixed with a bottom plate, and the lower end of the bottom plate is fixed with a plurality of supporting blocks for supporting.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses an outer hourglass of fuel cell galvanic pile is observed through two kinds of modes, and one of them sends out through the pressure differential, through the pressure inspection instrument at both ends, detector pressure to record its difference of period, can audio-visual acquisition difference numerical value, its two, produce atmospheric pressure when leaking outward through the fuel cell galvanic pile, let in liquid, through the bubbling volume, observe its outer hourglass condition, simply directly perceived, with low costs moreover.

Drawings

Fig. 1 is a schematic structural diagram of a fuel cell stack gas tightness detection device.

Fig. 2 is a schematic diagram of an arc-shaped chuck structure in a fuel cell stack gas tightness detection device.

Fig. 3 is a schematic structural diagram of a fixing member in a fuel cell stack gas tightness detecting apparatus.

Fig. 4 is a schematic structural diagram of a base plate in a fuel cell stack gas tightness detection device.

Fig. 5 is a schematic structural diagram of a fixing assembly in a fuel cell stack gas tightness detecting device.

In the figure: 1. a trough body; 2. a support plate; 3. a fuel cell stack; 4. a fixing member; 401. an annular suction cup; 402. fixing a sleeve; 5. a first connecting pipe; 6. a first valve; 7. a pressure sensor; 8. a fixing plate; 9. a second connecting pipe; 10. a second valve; 11. a pressure gauge; 12. an air inlet pipe; 13. a support block; 14. a base plate; 15. a pressure digital display; 16. a multifunctional digital display; 17. a third connecting pipe; 18. a fixing assembly; 1801. a fixing ring; 1802. a threaded sleeve; 19. a liquid; 20. supporting legs; 21. a support block; 22. a water inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-5, in an embodiment of the present invention, a fuel cell stack airtightness detection apparatus, includes a tank body 1, a fuel cell stack 3, and a fixing plate 8, the inner wall of the tank body 1 is fixed with a plurality of supporting blocks 21, the upper end of the supporting blocks 21 supports the fuel cell stack 3, the multiple ends of the fuel cell stack 3 are respectively communicated with a first connecting pipe 5 and a third connecting pipe 17, the first connecting pipe 5 is sequentially provided with a first valve 6 and a pressure sensor 7 from left to right, one side of the pressure sensor 7 is electrically connected with a multifunctional digital display instrument 16, the right end of the first connecting pipe 5 is communicated with a second connecting pipe 9, the second connecting pipe 9 is provided with a second valve 10, the lower end of the second connecting pipe 9 is connected with an air inlet pipe 12, and a pressure digital display instrument 15 is provided between the.

Further, a fixing plate 8 is arranged on the right side of the tank body 1, and the surface of the fixing plate 8 is fixed with a first connecting pipe 5, a second connecting pipe 9 and an air inlet pipe 12; the left end of the first connecting pipe 5 is provided with an annular sucker 401, the first connecting pipe 5 is in threaded connection with a fixing sleeve 402, and the annular sucker 401 and the fixing sleeve 402 form a fixing piece 4.

Further, a fixing assembly 18 is fixed on the surface of the support plate 2, the fixing assembly 18 comprises a fixing ring 1801 and a threaded sleeve 1802, the fixing ring 1801 is fixed with the support plate 2, the threaded sleeve 1802 is in threaded connection with the outer side of the fixing ring 1801, and a third connecting pipe 17 is fixed in the threaded sleeve 1802 in a threaded manner; a water inlet 22 is communicated with the left side of the tank body 1, liquid 19 is injected into the tank body 1 to reflect the air tightness, and a third connecting pipe 17 is injected into the liquid 19; the bottom of the tank body 1 is fixed with a plurality of supporting feet 20, the lower end of the fixed plate 8 is fixed with a bottom plate 14, and the lower end of the bottom plate 14 is fixed with a plurality of supporting blocks 13 for supporting.

Specifically, in the utility model, when in actual use, the fuel cell stack 3 is placed in the clamping groove in the support plate 2, then the fuel cell stack 3 is communicated with the first connecting pipe 5 through the fixing part 4, the third connecting pipe 17 is fixed through the fixing component 18, the upper end of the third connecting pipe 17 is communicated with the fuel cell stack 3 and extends into the liquid 19, the right end of the air inlet pipe 12 is connected with the air storage tank, the first valve 6 and the second valve 10 are closed, the air storage tank is started, the pressure gauge 11 is opened, the numerical value of the pressure digital display instrument 15 is observed, the displayed number can be adjusted through the pressure gauge 11 and then opened, the first valve 6 and the second valve 10 are connected, the multifunctional digital display instrument 16 receives data through the pressure sensor 7, the pressure value is displayed in real time, if the displayed pressure value is obviously reduced, namely, the fuel cell stack 3 leaks outside, if the ventilation state is continuously maintained, the, air pressure will build up in the fuel cell stack 3 and then be vented through connection line three 17 and the liquid 19 will bubble, as will be more clearly observed, by the amount of bubbles. Namely, the leakage of the fuel cell stack 3 can be observed, and the method is simple and intuitive.

The utility model discloses a theory of operation is:

in practical use, the fuel cell stack 3 is placed in the clamping groove in the support plate 2, then the fuel cell stack 3 is communicated with the first connecting pipe 5 through the fixing part 4, the third connecting pipe 17 is fixed through the fixing component 18, the upper end of the third connecting pipe 17 is communicated with the fuel cell stack 3 and extends into the liquid 19, the right end of the air inlet pipe 12 is connected with the air storage tank, the first valve 6 and the second valve 10 are closed, the air storage tank is started, the pressure gauge 11 is opened, the numerical value of the pressure digital display instrument 15 is observed, the displayed numerical value can be adjusted through the pressure gauge 11 and then opened, the first valve 6 and the second valve 10 are connected, the multifunctional digital display instrument 16 receives data through the pressure sensor 7, the pressure value is displayed in real time, if the displayed pressure value is obviously reduced, namely the fuel cell stack 3 leaks outwards, if the air ventilation state is continuously kept, the fuel cell stack 3, air pressure will build up in the fuel cell stack 3 and then be vented through connection line three 17 and the liquid 19 will bubble, as will be more clearly observed, by the amount of bubbles. Namely, the leakage of the fuel cell stack 3 can be observed, and the method is simple and intuitive.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A fuel cell stack air tightness detection device comprises a groove body (1), a fuel cell stack (3) and a fixing plate (8), the device is characterized in that a plurality of support blocks (21) are fixed on the inner wall of the tank body (1), a fuel cell stack (3) is supported at the upper end of each support block (21), multiple ends of the fuel cell stack (3) are respectively communicated with a first connecting pipe (5) and a third connecting pipe (17), a first valve (6) and a pressure sensor (7) are sequentially arranged on the first connecting pipe (5) from left to right, one side of the pressure sensor (7) is electrically connected with a multifunctional digital display instrument (16), the right end of the first connecting pipe (5) is communicated with a second connecting pipe (9), a second valve (10) is arranged on the second connecting pipe (9), the lower end of the second connecting pipe (9) is connected with an air inlet pipe (12), and a pressure digital display instrument (15) is arranged between the air inlet pipe (12) and;

the right side of the groove body (1) is provided with a fixing plate (8), and the surface of the fixing plate (8) is fixed with a first connecting pipe (5), a second connecting pipe (9) and an air inlet pipe (12).

2. The fuel cell stack gas tightness detection device according to claim 1, wherein the left end of the first connection pipe (5) is provided with an annular suction cup (401), and a fixing sleeve (402) is connected to the first connection pipe (5) in a threaded manner, wherein the annular suction cup (401) and the fixing sleeve (402) form the fixing member (4).

3. The fuel cell stack airtightness detection device according to claim 1, further comprising a support plate (2), wherein the fuel cell stack (3) is placed in a clamping groove in the support plate (2), a fixing component (18) is fixed to the surface of the support plate (2), the fixing component (18) comprises a fixing ring (1801) and a threaded sleeve (1802), the fixing ring (1801) is fixed to the support plate (2), the threaded sleeve (1802) is connected to the outer side of the fixing ring (1801) in a threaded manner, and a connecting pipe III (17) is fixed to the threaded sleeve (1802) in a threaded manner.

4. The fuel cell stack airtightness detection device according to claim 1, wherein a water inlet (22) is communicated with a left side of the tank body (1), a liquid (19) is injected into the tank body (1), and a third connecting pipe (17) is injected into the liquid (19).

5. The fuel cell stack airtightness detection apparatus according to claim 1, wherein a plurality of support legs (20) are fixed to the bottom of the tank body (1).

6. The fuel cell stack airtightness detection apparatus according to claim 1, wherein a bottom plate (14) is fixed to a lower end of the fixing plate (8), and a plurality of support blocks (13) are fixed to a lower end of the bottom plate (14).