CN217059207U

CN217059207U - Leakage detection device for bipolar plate

Info

Publication number: CN217059207U
Application number: CN202220452580.8U
Authority: CN
Inventors: 徐真; 丁桓展; 曹世杰; 刘琦
Original assignee: Edelman Zibo Hydrogen Energy Technology Co ltd
Current assignee: Edelman Zibo Hydrogen Energy Technology Co ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-07-26
Anticipated expiration: 2032-03-02

Abstract

The utility model provides a bipolar plate leakage detecting device, this bipolar plate leakage detecting device, including the seal box, one side of seal box is provided with first box, the top of first box is provided with the second box, the inside of seal box is provided with fixed subassembly, one side of seal box is provided with sealing door, the inside of seal box is provided with first anchor clamps, the top of first anchor clamps is provided with the second anchor clamps, the equal fixedly connected with installation piece in both sides of first anchor clamps and second anchor clamps, the inside of installation piece is provided with fixing bolt, the bottom of first anchor clamps and the top of second anchor clamps all are provided with sealed piece. The utility model provides a bipolar plate leakage detection device has solved current bipolar plate leakage detection device and has been manually operation, all needs to be manual at every turn to pressurize to the fixed mode to bipolar plate is comparatively complicated, and inconvenient staff operates, leads to the lower problem of efficiency of leaking hunting.

Description

Leakage detection device for bipolar plate

Technical Field

The utility model relates to a fuel cell technical field especially relates to a bipolar plate device that leaks hunting.

Background

The fuel cell is a chemical device which directly converts chemical energy of fuel into electric energy, also called electrochemical generator, and is a fourth power generation technology following hydraulic power generation, thermal power generation and atomic power generation, because the fuel cell converts gibbs free energy in the chemical energy of fuel into electric energy through electrochemical reaction, and is not limited by carnot cycle effect, so the efficiency is high, in addition, the fuel cell uses fuel and oxygen as raw materials, and has no mechanical transmission component, so the discharged harmful gas is very little, the service life is long, therefore, the fuel cell is the most promising power generation technology from the viewpoint of saving energy and protecting ecological environment.

The bipolar plate has the functions of mainly providing a gas flow channel, preventing the hydrogen and the oxygen in a battery gas chamber from communicating in series, establishing a current path between a cathode and an anode which are connected in series, manually operating the conventional bipolar plate leakage detection device, manually pressurizing the leakage detection device when detecting leakage every time, and leading the leakage detection efficiency to be lower due to the fact that the bipolar plate is complex in fixing mode and inconvenient to operate.

Therefore, it is necessary to provide a new bipolar plate leakage detecting device to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a bipolar plate leakage detection device with simple design, convenient to use and practicality are strong.

The utility model provides a bipolar plate leak hunting device, including the seal box, one side of seal box is provided with first box, the top of first box is provided with the second box, the inside of seal box is provided with fixed subassembly, one side of seal box is provided with sealing door.

In order to reach the effect of fixing bipolar plate, conduct the utility model provides a bipolar plate leakage detection device, it is preferred, fixed subassembly includes first anchor clamps, second anchor clamps, installation piece and fixing bolt, the inside of seal box is provided with first anchor clamps, the top of first anchor clamps is provided with the second anchor clamps, the equal fixedly connected with installation piece in both sides of first anchor clamps and second anchor clamps, the inside of installation piece is provided with fixing bolt.

In order to reach the effect of sealing bipolar plate, conduct the utility model provides a bipolar plate leak hunting device, it is preferred, the bottom of first anchor clamps and the top of second anchor clamps all are provided with sealed piece, the quantity of sealed piece sets up to two.

In order to reach easy to assemble and effect of dismantling, conduct the utility model provides a bipolar plate leak hunting device, it is preferred, the inside of installation piece is seted up threaded hole, the inner wall of screw hole and fixing bolt's outside threaded connection.

In order to reach the effect of closing the sealing door, conduct the utility model provides a bipolar plate leak hunting device, it is preferred, one side of sealing door is provided with sealed lock, one side of seal box is provided with the vacuum pump.

In order to reach the effect of taking out to the vacuum in the seal box, conduct the utility model provides a bipolar plate leak hunting device, it is preferred, the convulsions end intercommunication of vacuum pump has the exhaust tube, the one end of exhaust tube and one side intercommunication of seal box, the outside of exhaust tube is provided with the vacuum valve.

In order to reach the effect of carrying the helium, conduct the utility model provides a bipolar plate leak hunting device, it is preferred, one side of first box is provided with the first jar of body, the outside intercommunication of the first jar of body has communicating pipe, the both ends of communicating pipe communicate with one side of seal box and first box respectively, the outside of communicating pipe is provided with the control valve.

In order to reach the effect of carrying nitrogen gas, as the utility model provides a bipolar plate leak hunting device, it is preferred, one side of seal box is provided with the second jar of body, the outside intercommunication of the second jar of body has the conveyer pipe, the one end of conveyer pipe and one side intercommunication of seal box, the top intercommunication of seal box has the delivery pipe, the one end of delivery pipe and one side intercommunication of second box.

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

the bipolar plate leakage detection device comprises a bipolar plate, a first clamp, a second clamp, a fixing bolt, a mounting block, a sealing door, a helium tank, a second box, a mass spectrometer and a cooling fluid outlet, wherein the bipolar plate is placed at the top of the first clamp, the second clamp is placed at the top of the bipolar plate, the first clamp is in threaded connection with the mounting block through the fixing bolt to fix the bipolar plate, the sealing door is closed to seal the first clamp and the second clamp, the first box is arranged as the helium tank, the second box is arranged as the gas detection tank, the pressure of helium is higher than that of nitrogen due to the pressure difference between the nitrogen and the outside gas in the first clamp and the second clamp, if the bipolar plate leaks, the helium can enter the clamp, so that the helium enters the second box along with pure nitrogen, the mass spectrometer in the second box detects whether the gas flowing out from the cooling fluid outlet contains the helium, thereby judging the leakage condition of the bipolar plate, the problem that the conventional bipolar plate leakage detection device is manually operated, and manual pressurization is needed during each leakage detection is solved, and the fixing mode of the bipolar plate is complex, the operation is inconvenient, and the leakage detection efficiency is low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a bipolar plate leakage detection device according to a preferred embodiment of the present invention;

fig. 2 is a schematic structural view of the fixing assembly of the present invention;

fig. 3 is a schematic structural view of the first and second clamps of the present invention;

fig. 4 is a schematic structural view of the vacuum pump of the present invention.

In the figure: 1. sealing the box; 2. a first case; 3. a second case; 4. a fixing assembly; 41. a first clamp; 42. a second clamp; 43. mounting a block; 44. fixing the bolt; 5. a sealing door; 6. a sealing block; 7. a threaded hole; 8. sealing the lock; 9. a vacuum pump; 10. an air exhaust pipe; 11. a vacuum valve; 12. a first tank; 13. a communicating pipe; 14. a control valve; 15. a second tank; 16. a delivery pipe; 17. and a discharge pipe.

Detailed Description

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only used as examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Please refer to fig. 1, fig. 2, fig. 3 and fig. 4, wherein fig. 1 is a schematic structural diagram of a bipolar plate leakage detecting device according to a preferred embodiment of the present invention; fig. 2 is a schematic structural view of the fixing assembly of the present invention; fig. 3 is a schematic structural view of the first and second clamps of the present invention; fig. 4 is a schematic structural view of the vacuum pump of the present invention. A bipolar plate leakage detection device comprises a seal box 1.

In the specific implementation process, as shown in fig. 1, fig. 2 and fig. 3, a first box body 2 is arranged on one side of a sealed box 1, a second box body 3 is arranged on the top of the first box body 2, a fixing component 4 is arranged inside the sealed box 1, and a sealed door 5 is arranged on one side of the sealed box 1.

The fixing assembly 4 comprises a first clamp 41, a second clamp 42, an installation block 43 and a fixing bolt 44, the first clamp 41 is arranged inside the seal box 1, the second clamp 42 is arranged at the top of the first clamp 41, the installation block 43 is fixedly connected to the two sides of the first clamp 41 and the second clamp 42, and the fixing bolt 44 is arranged inside the installation block 43.

The bottom of the first clamp 41 and the top of the second clamp 42 are both provided with sealing blocks 6, and the number of the sealing blocks 6 is set to two.

The mounting block 43 is provided with a threaded hole 7 therein, and the inner wall of the threaded hole 7 is in threaded connection with the outer side of the fixing bolt 44.

It should be noted that: the bipolar plate is first placed on top of the first clamp 41, and then the second clamp 42 is placed on top of the bipolar plate, screwed with the screw holes 7 inside the mounting block 43 by means of the fixing bolts 44, fixing the bipolar plate, sealing the bipolar plate by arranging a sealing block 6, then closing a sealing door 5, the first jig 41 and the second jig 42 are sealed, the first tank 2 is provided as a helium tank, the second tank 3 is provided as a gas detection tank, due to the pressure difference between the nitrogen gas inside the first and

second clamps

41 and 42 and the outside air, the helium gas pressure is higher than the nitrogen gas, if the bipolar plates leak, helium gas will enter the fixture, thus passing with pure nitrogen into the second tank 3, whether helium gas is contained in the gas flowing out of the cooling fluid outlet is detected by a mass spectrometer in the second case 3, so that the leakage condition of the bipolar plate is judged.

Referring to fig. 1 and 4, a sealing lock 8 is provided at one side of the sealing door 5, and a vacuum pump 9 is provided at one side of the sealing box 1.

An air exhaust end of the vacuum pump 9 is communicated with an air exhaust pipe 10, one end of the air exhaust pipe 10 is communicated with one side of the sealing box 1, and a vacuum valve 11 is arranged on the outer side of the air exhaust pipe 10.

One side of the first tank 2 is provided with a first tank 12, the outer side of the first tank 12 is communicated with a communication pipe 13, two ends of the communication pipe 13 are respectively communicated with one side of the seal box 1 and one side of the first tank 2, and the outer side of the communication pipe 13 is provided with a control valve 14.

One side of the sealed box 1 is provided with a second tank body 15, the outer side of the second tank body 15 is communicated with a conveying pipe 16, one end of the conveying pipe 16 is communicated with one side of the sealed box 1, the top of the sealed box 1 is communicated with a discharge pipe 17, and one end of the discharge pipe 17 is communicated with one side of the second box body 3.

It should be noted that: the sealing door 5 is closed through the sealing lock 8, the sealing effect of the sealing box 1 is enhanced, the vacuum valve 11 is opened, the vacuum pump 9 is started through an external controller, the vacuum pump 9 vacuumizes the sealing box 1 through the exhaust pipe 10, the first tank 12 is set as a helium tank, the second tank 15 is set as a nitrogen tank, the control valve 14 on one side of the first tank 12 is opened to make the sealing box 1 and the first box 2 filled with helium gas, the pressure in the first box 2 is kept balanced with the pressure in the sealing box 1, then high-purity nitrogen is filled into the first clamp 41 and the second clamp 42 in the sealing box 1 through the conveying pipe 16 outside the second tank 15, the existing air in the cavity where the internal cooling channel is located is completely diluted, a nitrogen atmosphere is formed, and the nitrogen is discharged into the second box 3 through the discharge pipe 17, due to the pressure difference between the nitrogen in the first clamp 41 and the second clamp 42 and the external air, the helium pressure is higher than that of the nitrogen, if the bipolar plate leaks, the helium enters the first clamp 41 and the second clamp 42, so that the helium enters the second box body 3 along with high-purity nitrogen, and a mass spectrometer in the second box body 3 detects whether the gas flowing out from the cooling fluid outlet contains the helium, thereby judging the leakage condition of the bipolar plate.

The utility model provides a pair of bipolar plate leak hunting device's theory of operation as follows:

when in use, firstly, the bipolar plate is placed on the top of the first clamp 41, then the second clamp 42 is placed on the top of the bipolar plate, the bipolar plate is screwed with the threaded hole 7 in the mounting block 43 through the fixing bolt 44 and is fixed, the bipolar plate is sealed by arranging the sealing block 6, then the sealing door 5 is closed, the first clamp 41 and the second clamp 42 are sealed, the first box body 2 is arranged as a helium box, the second box body 3 is arranged as a gas detection box, the helium pressure is higher than that of the nitrogen due to the pressure difference between the nitrogen in the first clamp 41 and the second clamp 42 and the outside gas, if the bipolar plate leaks, the helium enters the clamp, so that the helium enters the second box body 3 along with pure nitrogen, whether the gas flowing out from the cooling fluid outlet contains the helium is detected through a mass spectrometer in the second box body 3, and the leakage condition of the bipolar plate is judged, the sealing door 5 is closed through the sealing lock 8, the sealing effect of the sealing box 1 is enhanced, the vacuum valve 11 is opened, the vacuum pump 9 is started through the external controller, the vacuum pump 9 vacuumizes the sealing box 1 through the exhaust pipe 10, the first tank 12 is a helium tank, the second tank 15 is a nitrogen tank, the control valve 14 on one side of the first tank 12 is opened to enable the sealing box 1 and the first box 2 to be filled with helium gas, the pressure in the first box 2 is kept balanced with the pressure in the sealing box 1, then high-purity nitrogen is filled into the first clamp 41 and the second clamp 42 in the sealing box 1 through the conveying pipe 16 on the outer side of the second tank 15, the existing air in the cavity where the internal cooling channel is located is completely diluted, a nitrogen atmosphere is formed, the nitrogen gas is discharged into the second box 3 through the discharge pipe 17, and due to the pressure difference between the nitrogen in the first clamp 41 and the second clamp 42 and the external air, the helium pressure is higher than that of the nitrogen, if the bipolar plate leaks, the helium enters the first clamp 41 and the second clamp 42, enters the second box body 3 along with the high-purity nitrogen, and a mass spectrometer in the second box body 3 detects whether the gas flowing out from the cooling fluid outlet contains the helium or not, so that the leakage condition of the bipolar plate is judged.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The bipolar plate leakage detection device is characterized by comprising a seal box (1), wherein a first box body (2) is arranged on one side of the seal box (1), a second box body (3) is arranged at the top of the first box body (2), a fixing assembly (4) is arranged inside the seal box (1), and a seal door (5) is arranged on one side of the seal box (1).

2. The bipolar plate leakage detection device according to claim 1, wherein the fixing assembly (4) comprises a first clamp (41), a second clamp (42), a mounting block (43) and a fixing bolt (44), the first clamp (41) is arranged inside the seal box (1), the second clamp (42) is arranged on the top of the first clamp (41), the mounting block (43) is fixedly connected to both sides of the first clamp (41) and the second clamp (42), and the fixing bolt (44) is arranged inside the mounting block (43).

3. A bipolar plate leak detection device according to claim 2, wherein the bottom of the first clamp (41) and the top of the second clamp (42) are each provided with a sealing block (6), the number of sealing blocks (6) being set to two.

4. The bipolar plate leak detection device according to claim 2, wherein the mounting block (43) is internally provided with a threaded hole (7), and the inner wall of the threaded hole (7) is in threaded connection with the outer side of the fixing bolt (44).

5. A bipolar plate leak detector as claimed in claim 1, wherein the sealing door (5) is provided with a sealing lock (8) on one side and the sealing box (1) is provided with a vacuum pump (9) on one side.

6. A bipolar plate leakage detecting device according to claim 5, wherein the air exhaust end of the vacuum pump (9) is communicated with an air exhaust pipe (10), one end of the air exhaust pipe (10) is communicated with one side of the sealing box (1), and a vacuum valve (11) is arranged on the outer side of the air exhaust pipe (10).

7. The bipolar plate leakage detection device according to claim 1, wherein a first tank (12) is arranged on one side of the first tank (2), a communication pipe (13) is communicated with the outer side of the first tank (12), two ends of the communication pipe (13) are respectively communicated with the seal box (1) and one side of the first tank (2), and a control valve (14) is arranged on the outer side of the communication pipe (13).

8. The bipolar plate leakage detection device according to claim 1, wherein a second tank (15) is arranged on one side of the seal box (1), a delivery pipe (16) is communicated with the outer side of the second tank (15), one end of the delivery pipe (16) is communicated with one side of the seal box (1), a discharge pipe (17) is communicated with the top of the seal box (1), and one end of the discharge pipe (17) is communicated with one side of the second box (3).