CN211317662U - Bipolar plate air tightness detection device - Google Patents
Bipolar plate air tightness detection device Download PDFInfo
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- CN211317662U CN211317662U CN201922394995.5U CN201922394995U CN211317662U CN 211317662 U CN211317662 U CN 211317662U CN 201922394995 U CN201922394995 U CN 201922394995U CN 211317662 U CN211317662 U CN 211317662U
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Abstract
The utility model discloses a bipolar plate gas tightness detection device, the support frame in the device passes through bracing piece and bottom plate fixed connection, the fixed plate has been placed on the bottom plate, first cavity and second cavity have been seted up respectively to bottom plate and upper fixed plate, first opening and second opening have been seted up respectively on first cavity and the second cavity, it is sealed installation with upper fixed plate and bottom plate respectively through the sealing washer that corresponds separately to wait to detect the bipolar plate, first opening intercommunication air supply, the second opening communicates U type pipe, whether the compressed air in the first cavity passes the graphite substrate of waiting to detect the bipolar plate is judged by the change of U type pipe water level; the upper fixing plate and the lower fixing plate are respectively provided with corresponding fixing holes, and the bolt can effectively lock the position of the bipolar plate to be detected after penetrating through the fixing holes; the support frame is fixedly provided with an air cylinder, a piston rod of the air cylinder is fixedly connected with a pressing plate, and a pressing column is fixed on the surface of the pressing plate and used for applying extra force through the arrangement of the air cylinder.
Description
Technical Field
The utility model relates to a fuel cell bipolar plate production technical field specifically is a bipolar plate gas tightness detection device.
Background
The bipolar plate prepared from the graphite material has good electric conductivity, thermal conductivity and corrosion resistance, is the most commonly used bipolar plate of the current proton exchange membrane fuel cell, is prepared by mixing carbon powder or graphite powder with graphitized resin in the preparation process of the graphite bipolar plate, and has the possibility of defects, so that the problem of poor air tightness of the matrix of the graphite bipolar plate exists, fuel and oxygen need to be separated from the bipolar plate, the requirement on the air resistance of the bipolar plate is quite high, so that the air tightness detection of the graphite bipolar plate is of great importance, and how to simply and efficiently detect the air tightness becomes the problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a bipolar plate gas tightness detection device to the gas tightness of solving graphite bipolar plate base member is difficult to by the problem of effective detection.
The utility model provides a scheme as follows of above-mentioned technical problem: a bipolar plate air tightness detection device comprises a bottom plate, a supporting rod, a supporting frame, a fixing plate, an air cylinder and a U-shaped pipe, wherein the supporting frame is fixedly connected with the bottom plate through the supporting rod, the fixing plate is installed on the bottom plate and comprises an upper fixing plate and a lower fixing plate which are oppositely arranged, the surfaces of the upper fixing plate and the lower fixing plate are respectively provided with a first cavity and a second cavity which are oppositely concave, the first cavity and the second cavity are respectively provided with a first opening and a second opening, the first opening is communicated with an external air source, the second opening is communicated with the U-shaped pipe, one end of the U-shaped pipe is communicated with the second opening in a sealing mode, and the other end of the U-shaped pipe is communicated with the atmosphere; the air cylinder is fixedly installed on the supporting frame, a piston rod of the air cylinder is connected with a pressing plate and faces the fixing plate, and therefore the pressing plate is controlled to be close to or far away from the fixing plate.
Preferably, sealing rings are laid on the outer edges of the first cavity and the second cavity, and the sealing rings are matched with the sealing grooves of the bipolar plate to be detected.
Preferably, the upper fixing plate and the lower fixing plate are respectively provided with a fixing hole, and the fixing hole of the upper fixing plate corresponds to the fixing hole of the lower fixing plate and is connected and fixed through a bolt.
Preferably, the pressing plate is evenly distributed with pressing columns towards one end of the fixing plate, and the pressing columns are cylindrical.
Preferably, the U-shaped pipe is vertically installed on one side of the support frame, and a plunger is installed at one end of the U-shaped pipe, which is communicated with the second opening.
Preferably, an arc-shaped handle is convexly formed on one side of the support frame.
The utility model provides a pair of bipolar plate gas tightness detection device has following beneficial effect: the upper fixing plate and the lower fixing plate clamp and mount the bipolar plate to be detected, the first cavity and the second cavity are respectively provided with a first opening and a second opening, the first opening is communicated with an external air source, the second opening is communicated with a U-shaped pipe, sealing rings matched with sealing grooves of the bipolar plate to be detected are paved on the outer edges of the first cavity and the second cavity, and the sealing arrangement of the bipolar plate to be detected ensures reliable air tightness detection results; whether the graphite matrix of the bipolar plate to be detected leaks or not is judged by observing the liquid level change of the U-shaped pipe, so that the detection is visual and quick; the air cylinder pushes the pressing plate to move towards the fixed plate and press the columns of the fixed plate, and the bipolar plate to be detected is well fixed.
Drawings
The accompanying drawings, which are described herein to provide a further understanding of the invention and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention without forming an undue limitation to the invention, in which:
fig. 1 is a schematic structural diagram of an embodiment of a bipolar plate airtightness detection apparatus provided by the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the middle fixing plate of the present invention.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
As shown in fig. 1-2, fig. 1 is a schematic structural diagram of an embodiment of a bipolar plate airtightness detection apparatus provided in the present invention, and fig. 2 is a schematic structural diagram of an embodiment of an intermediate fixing plate in the present invention. The device comprises a base 1, a support frame 3 and a cylinder 4, wherein the base 1 and the support frame 3 are fixedly connected through support rods 2, the number of the support rods 2 is 4, and the support rods are respectively arranged at the corners of the base 1 to play a supporting role; the air cylinder 4 is fixedly arranged on the upper surface of the support frame 3, a through hole is formed in the middle of the support frame 3, a piston rod of the air cylinder 4 penetrates through the through hole and faces the base 1, a pressing plate 11 is fixedly arranged on the piston rod of the air cylinder 4, pressing columns 111 are uniformly distributed on the bottom surface of the pressing plate 11, and the air cylinder 4 is controlled to realize the action that the pressing plate 11 approaches to or leaves the base 1; a handle 31 is formed at the left end of the support frame 3 in an upward protruding manner, and the handle 31 is arranged in an arc shape so as to be convenient for a user to hold; the device also comprises a fixed plate and a U-shaped pipe 6, wherein the fixed plate comprises an upper fixed plate 10 and a lower fixed plate 8, a bipolar plate 9 to be detected is clamped between the upper fixed plate 10 and the lower fixed plate 8, the lower fixed plate 8 is adhered to one side surface of the bipolar plate 9 and is concavely formed into a first cavity, the first cavity is provided with a first opening 81, the first opening 81 passes through the bottom plate 1 to be communicated with an external air source, the upper fixed plate 10 is adhered to one side surface of the bipolar plate 9 and is concavely formed into a second cavity, the second cavity is provided with a second opening 101, the U-shaped pipe 6 is installed and fixed on a left end extending part of the support frame 3, one end of the U-shaped pipe 6 is connected with an air vent pipe 7, the other end of the U-shaped pipe is communicated with the external atmosphere, the air vent pipe 7 is communicated with the second opening 101, a plunger 5 is installed at, to maintain the seal of one end of the U-tube 6. When the device works, the air supply pressure of an external air source is adjusted, air is supplied to the first opening 81 on the lower fixing plate 8, the bipolar plate 9 to be detected is clamped and fixed between the upper fixing plate 10 and the lower fixing plate 8, the second opening 101 on the upper fixing plate 10 is communicated with the vent pipeline 7, the air cylinder 4 is opened, the air cylinder 4 drives the pressing plate 11 to move downwards to abut against the upper fixing plate 10, and the air tightness of the bipolar plate 9 to be detected is judged by observing the rising and falling of the water level in the U-shaped pipe 6.
Further, in order to make the detection result of the detection device more reliable, the first cavity and the second cavity formed on the upper fixing plate 10 and the lower fixing plate 8 should be matched with the sealing groove of the bipolar plate 9 to be detected, preferably, when the bipolar plate 9 to be detected is clamped and fixed, a sealing ring 12 is laid between the sealing groove of the bipolar plate 9 and the first cavity and between the sealing groove of the bipolar plate 9 and the second cavity, the sealing ring 12 is arranged around the outer edge of the first cavity and the outer edge of the second cavity, that is, the sealing ring 12 is connected with the sealing groove of the bipolar plate 9 to be detected to keep the space sealing performance of the bipolar plate 9 to.
Furthermore, the upper fixing plate 10 and the lower fixing plate 8 are both provided with fixing holes 13, and the upper fixing plate 10 is arranged corresponding to the fixing holes 13 of the lower fixing plate 8, so as to fixedly connect the upper fixing plate 10 and the lower fixing plate 8 through bolts and effectively lock the position of the bipolar plate 9 to be detected, so that the bipolar plate cannot easily move.
In specific implementation, firstly, the upper fixing plate 10 and the lower fixing plate 8 are determined according to the pattern of the sealing groove of the bipolar plate 9 to be detected, so as to ensure that the first cavity and the second cavity are both matched with the sealing groove of the bipolar plate 9 to be detected, the bipolar plate 9 to be detected is clamped between the upper fixing plate 10 and the lower fixing plate 8, the outer edge of the first cavity is connected with the sealing groove on the lower surface of the bipolar plate 9 to be detected through the sealing ring 12, therefore, the lower fixing plate 8 and the bipolar plate 9 to be detected are hermetically mounted, the hermetic mounting of the upper fixing plate 10 and the bipolar plate 9 to be detected is similar to that described above, so that the description is omitted, after the hermetic mounting, the bolts are respectively inserted into the fixing holes 13 on the fixing plates, the bipolar plate 9 to be detected is locked while the upper fixing plate 10 and the. Then, the cylinder 4 is started, the piston rod of the adjusting cylinder 4 moves downwards until the pressing plate 11 fixed at the lower end of the piston rod presses the upper fixing plate 10, and the fixing plate and the bipolar plate 9 to be detected are better fixed under the pressing of the pressing plate 11. And finally, starting an air source and controlling air pressure, enabling compressed air exhausted by the air source to enter the first cavity from the first opening 81, enabling the compressed air to penetrate through the graphite plate substrate from the first cavity to enter the second cavity if the graphite substrate of the bipolar plate 9 to be detected leaks, enabling the compressed air to enter the ventilation conduit 7 from the second outlet 101, pushing down the water level in the U-shaped pipe 7, and calculating the leakage amount of the bipolar plate 9 to be detected per hour according to the change of liquid level scales on the U-shaped pipe 7.
The utility model provides a pair of bipolar plate gas tightness detection device, the support frame passes through bracing piece and bottom plate fixed connection, the fixed plate has been placed on the bottom plate, bottom plate and upper plate set up respectively with wait to detect first cavity and the second cavity of bipolar plate's seal groove phase-match, first opening and second opening have been seted up on first cavity and the second cavity respectively, wait to detect bipolar plate respectively through the sealing washer that corresponds respectively with upper plate and bottom plate seal installation, first opening intercommunication air supply, the second opening communicates U type pipe, whether the compressed air in the first cavity passes the graphite substrate of waiting to detect bipolar plate is judged by the change of U type pipe water level, very convenient rapidly, and can calculate the leakage quantity according to the change of liquid level; the upper fixing plate and the lower fixing plate are provided with corresponding fixing holes, and the positions of the bipolar plates to be detected can be effectively locked while the upper fixing plate and the lower fixing plate are fixedly installed through bolts, so that the bipolar plates to be detected cannot easily move and detection is facilitated; the cylinder is fixedly mounted on the support frame, a pressing plate is fixedly connected to a piston rod of the cylinder, a pressing column is fixed to the surface of the pressing plate, the pressing plate is driven to be close to or far away from the upper fixing plate through the control cylinder, extra force is applied through the setting of the cylinder, the bipolar plate to be detected is further fixed, and therefore the detection result is reliable.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the present invention can be smoothly implemented by those skilled in the art according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.
Claims (3)
1. The bipolar plate airtightness detection device is characterized in that: the support frame is fixedly connected with the bottom plate through the support rod, and an arc-shaped handle is convexly formed on one side of the support frame; the fixing plate is arranged on the bottom plate and comprises an upper fixing plate and a lower fixing plate which are arranged oppositely, the surfaces of the upper fixing plate and the lower fixing plate are respectively provided with a first cavity and a second cavity which are opposite in concave forming, the first cavity and the second cavity are respectively provided with a first opening and a second opening, the first opening is communicated with an external air source, the second opening is communicated with the U-shaped pipe, one end of the U-shaped pipe communicated with the second opening is arranged in a sealing mode, the other end of the U-shaped pipe is communicated with the atmosphere, the upper fixing plate and the lower fixing plate are respectively provided with a fixing hole, and the fixing hole of the upper fixing plate corresponds to the fixing hole of the lower fixing plate and is fixedly connected through a bolt; the air cylinder is fixedly installed on the supporting frame, a piston rod of the air cylinder is connected with a pressing plate and faces the fixing plate so as to control the pressing plate to be close to or far away from the fixing plate, pressing columns are uniformly distributed at one end, facing the fixing plate, of the pressing plate, and the pressing columns are cylindrical.
2. The bipolar plate airtightness detection apparatus according to claim 1, wherein: and sealing rings are paved on the outer edges of the first cavity and the second cavity and used for packaging a sealing groove of the bipolar plate to be detected.
3. The bipolar plate airtightness detection apparatus according to claim 1, wherein: the U-shaped pipe is vertically arranged on one side of the supporting frame, and a plunger is arranged at one end, communicated with the second opening, of the U-shaped pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922394995.5U CN211317662U (en) | 2019-12-27 | 2019-12-27 | Bipolar plate air tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922394995.5U CN211317662U (en) | 2019-12-27 | 2019-12-27 | Bipolar plate air tightness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211317662U true CN211317662U (en) | 2020-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922394995.5U Active CN211317662U (en) | 2019-12-27 | 2019-12-27 | Bipolar plate air tightness detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211317662U (en) |
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2019
- 2019-12-27 CN CN201922394995.5U patent/CN211317662U/en active Active
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