CN209858153U - Airtight detection hydraulic machine for single bipolar plate - Google Patents
Airtight detection hydraulic machine for single bipolar plate Download PDFInfo
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- CN209858153U CN209858153U CN201920640411.5U CN201920640411U CN209858153U CN 209858153 U CN209858153 U CN 209858153U CN 201920640411 U CN201920640411 U CN 201920640411U CN 209858153 U CN209858153 U CN 209858153U
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- 238000001514 detection method Methods 0.000 title claims abstract description 63
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 238000005461 lubrication Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses an air tightness detection hydraulic machine for a single bipolar plate, which integrates an air tightness detection system into the hydraulic machine, and comprises a frame, a hydraulic cylinder, an upper workbench, a lower workbench, a hydraulic controller and an air tightness detection system; in order to be applicable to the production and the detection of single-chip hydraulic press, this hydraulic press adopts for single-cylinder hydraulic press, and the back is assembled through the hydraulic press to the single-chip bipolar plate, can directly adopt the airtight detecting system in this hydraulic press, carries out the gas tightness of bipolar plate and detects, and then guarantees the equipment quality of bipolar plate, and this airtight detection hydraulic press has advantages such as simple structure, reasonable in design, convenient to use, when reducing equipment input cost, has improved the equipment quality of single-chip bipolar plate.
Description
Technical Field
The utility model discloses a technical field that relates to the airtight detection of monolithic bipolar plate especially relates to an airtight hydraulic press that detects for monolithic bipolar plate.
Background
The bipolar plate, as a core component of the fuel cell, has an important influence on the quality of the fuel cell, wherein the airtightness is one of the important indexes for representing the performance of the bipolar plate.
At present, when the air tightness of the bipolar plate is detected, a special detection device is required to be used for detection, and the problems of complex structure, high equipment investment cost and the like exist.
Therefore, how to solve the above problems is a problem to be solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses an airtight hydraulic press that detects for monolithic bipolar plate to solve prior art at least, when carrying out bipolar plate and examining, need use professional equipment, lead to the high scheduling problem of equipment input cost.
The utility model provides a technical scheme specifically does, a monolithic bipolar plate detects hydraulic press with airtight, and this hydraulic press includes: the air tightness detection device comprises a frame 1, a hydraulic cylinder 2, an upper workbench 3, a lower workbench 4, a hydraulic controller 5 and an air tightness detection system;
the frame 1 includes: the device comprises an upper beam 11, a base 12 and four upright columns 13, wherein the upper beam 11 and the base 12 are sleeved at the upper and lower ends of the four upright columns 13 through oil-free lubrication respectively and are fixed by locking nuts 14;
the hydraulic cylinder 2 comprises a cylinder body 21 and a piston rod 22, and the cylinder body 21 is fixedly connected with the base 12;
the upper workbench 3 is fixedly sleeved on the four upright columns 13 through oil-free lubricating sleeves;
the lower workbench 4 is sleeved on the four upright posts 13 through oil-free lubrication sleeves, the lower workbench 4 is arranged opposite to the upper workbench 3, and the lower surface of the lower workbench 4 is in driving connection with the upper end of a piston rod 22 in the hydraulic cylinder 2;
the output end of the hydraulic controller 5 is connected with the control end of the hydraulic cylinder 2;
the airtightness detection system includes: the air conditioner comprises three air inlet branches, three air outlet branches and a controller;
the three gas inlet branches are arranged in parallel, the gas inlet end of each gas inlet branch is communicated with a gas source, the gas outlet end of each gas inlet branch is communicated with the inlet of a gas cavity or a water cavity in the single bipolar plate to be detected in a one-to-one correspondence mode, a gas inlet electromagnetic valve, a pressure gauge and a flow meter are arranged on each gas inlet branch, and the pressure gauge and the flow meter are located at the downstream of the gas inlet electromagnetic valve;
the three gas outlet branches are arranged in parallel, the gas inlet end of each gas outlet branch is respectively communicated with the outlets of the gas cavity or the water cavity in the single bipolar plate to be detected in a one-to-one correspondence mode, and each gas outlet branch is provided with a pressure relief electromagnetic valve;
the input end of the controller is respectively connected with the output end of the pressure gauge and the output end of the flow meter on each air inlet branch, and the output end of the controller is respectively connected with the control end of the air inlet electromagnetic valve on each air inlet branch and the control end of the pressure relief electromagnetic valve on each air outlet branch.
Preferably, the airtightness detection system further comprises: a display;
the input end of the display is respectively connected with each air inlet electromagnetic valve, the pressure gauge, the flow meter and each pressure relief electromagnetic valve on the air outlet branch, and the display is used for respectively displaying the opening and closing states of the air inlet electromagnetic valve on the air inlet branch and the pressure relief electromagnetic valve on the air outlet branch, and the pressure value measured by the pressure gauge and the flow value measured by the flow meter.
Further preferably, each air inlet branch is further provided with a flow sensor, and the output end of the flow sensor is connected with the input end of the controller.
Preferably, the surface of the upper workbench 3 and the surface of the lower workbench 4 are both provided with an anti-rust layer, and the surface precision of the anti-rust layer is 0.01-0.03.
Further preferably, the lower table 4 is a vacuum adsorption table.
The utility model provides an airtight detection hydraulic press is used to monolithic bipolar plate fuses airtight detection system to the hydraulic press in, for the production and the detection that are applicable to the monolithic hydraulic press, what this hydraulic press adopted is single cylinder hydraulic press, and monolithic bipolar plate assembles the back through the hydraulic press, can directly adopt the airtight detection system in this hydraulic press, carries out the gas tightness detection of bipolar plate, and then guarantees bipolar plate's equipment quality.
The utility model provides a monolithic bipolar plate detects hydraulic press with airtight has advantages such as simple structure, reasonable in design, convenient to use, when reducing equipment input cost, has improved monolithic bipolar plate's equipment quality.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
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 description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an airtight detection hydraulic machine for a single bipolar plate according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
Referring to fig. 1, the air tightness detection hydraulic machine for a single bipolar plate provided by the present embodiment comprises a frame 1, a hydraulic cylinder 2, an upper working table 3, a lower working table 4, a hydraulic controller 5 and an air tightness detection system, wherein the frame 1 mainly comprises an upper beam 11, a base 12 and four columns 13, the upper beam 11 and the base 12 are respectively sleeved on the upper and lower ends of the four columns 13 through oil-free lubrication sleeves and are fixed by lock nuts 14, the hydraulic cylinder 2 comprises a cylinder body 21 and a piston rod 22, the cylinder body 21 is fixedly connected with the base 12, the upper working table 3 is fixedly sleeved on the four columns 13 through the oil-free lubrication sleeves, the lower working table 4 is arranged opposite to the upper working table 3, and the lower surface of the lower working table 4 is drivingly connected with the upper end of the piston rod 22 in the hydraulic cylinder 2, the output end of the hydraulic controller 5 is connected with the control end of the hydraulic cylinder 2, the air tightness detection system mainly comprises three air inlet branches, three air outlet branches and a controller, the three air inlet branches are arranged in parallel, the air inlet end of each air inlet branch is communicated with an air source, the air outlet end of each air inlet branch is respectively communicated with the inlets of the air cavities or the water cavities in the single bipolar plates to be detected in a one-to-one correspondence mode, an air inlet electromagnetic valve, a pressure gauge and a flow meter are arranged on each air inlet branch, the pressure gauge and the flow meter are positioned at the downstream of the air inlet electromagnetic valve, the three air outlet branches are arranged in parallel, the air inlet end of each air outlet branch is respectively communicated with the outlets of the air cavities or the water cavities in the single bipolar plates to be detected in a one-to-one correspondence mode, a pressure relief electromagnetic valve is arranged on each air outlet branch, and, the output end of the controller is respectively connected with the control end of the air inlet electromagnetic valve on each air inlet branch and the control end of the pressure relief electromagnetic valve on each air outlet branch.
When the air tightness detection hydraulic machine for the single bipolar plate is used for air tightness detection, the piston rod in the hydraulic cylinder is controlled by the hydraulic controller to drive the lower workbench to move upwards along the upright column until the upper workbench and the lower workbench clamp the single bipolar plate, and pressurization is continued until the requirement of detection pressure is met, and pressure is continuously maintained for detection.
The air tightness detection system cannot accurately judge the leakage part, but is convenient to automate, short in detection time, stable, reliable and fast in test, the tested workpiece can be kept in a dry state, secondary pollution to the tested product cannot be caused, and the leakage amount can be quantitatively measured; the IP waterproofing grade can be obtained according to the leakage amount.
The air tightness detection method is very suitable for large-scale detection on a production line, and completely eliminates human factors. The quantitative measurement can be automated, and the detection speed is high, so that the method can be widely applied.
The specific airtight detection method comprises the following steps: the pressure type detection method is preferably used when the internal volume of the component to be detected is small, such as a direct pressure detection method, a differential pressure method, and a flow type leakage detection method. When the internal volume of the component is large, it is considered to select a flow type detection method. The detection precision requirement is very high, and the detection method is more suitable for differential pressure detection when the appearance is complex. During detection, the opening of the product is blocked, compressed air with certain pressure is filled into the product, the pressure or flow inside the product is measured by the tester, and if the product leaks, the pressure is reduced or the flow is increased. Under the same condition, when the requirement on the measurement precision of the part is not high, an absolute or relative pressure type detection method can be considered to be selected; when the measurement accuracy requirement of the part is higher, the pressure difference type detection method is more suitable. The setting of the time parameter of the air tightness detection equipment determines the detection beat, the detection beat is shortened as much as possible under the condition of meeting the detection requirement so as to improve the efficiency, the inflation time can refer to a detection curve and is generally set to be 1-2 seconds after the set pressure is reached, the balance time of the air tightness detection equipment is observed only after the direct pressure change rate is stabilized at a certain value, and the detection time is generally set to be the time for observing an obvious pressure drop curve if a speed mode is adopted.
Principle of airtightness detection: the method comprises the steps of inputting compressed air with accurate control pressure into a test piece, detecting air tightness, then automatically turning off an inflation air source, accurately controlling air flow balance of the electromagnetic valve within a set time, turning off the electromagnetic valve with a balance effect (a tested piece is connected to one end of a balance valve, and a standard piece without leakage is connected to the other end of the balance valve), measuring a differential pressure value between the standard piece and the tested piece within the set time through a precise micro differential pressure sensor connected with the same air path of the tested piece and the standard piece, and obtaining a pressure drop generated by actual leakage of the tested piece through temperature compensation so as to judge whether the test piece leaks or not.
Wherein, the air inlet solenoid valve on each air inlet branch and the pressure relief solenoid valve on the air outlet branch can be operated manually.
In order to clearly display the working states of each air inlet electromagnetic valve, each pressure gauge, each flow meter and each pressure relief electromagnetic valve in the air tightness detection system, as an improvement of the technical scheme, a display is arranged in the air tightness detection system, and the input end of the display is respectively connected with the air inlet electromagnetic valve, each pressure gauge, each flow meter on each air inlet branch and the pressure relief electromagnetic valve on each air outlet branch and is used for respectively displaying the opening and closing states of the air inlet electromagnetic valve on each air inlet branch and the pressure relief electromagnetic valve on each air outlet branch, and the pressure value measured by the pressure gauge and the flow value measured by the flow meter.
In order to realize the flow control of the airflow on each air inlet branch, as an improvement of the technical scheme, each air inlet branch is also provided with a flow sensor, the output end of the flow sensor is connected with the input end of a controller, the flow sensor can send the detected flow value to the controller through the arrangement of the flow sensor, and the controller controls the opening of an air inlet electromagnetic valve according to the received flow value to realize the flow regulation.
In order to prolong the service life of an upper working table and a lower working table in a hydraulic machine and improve the assembly quality of a single bipolar plate, as an improvement of the technical scheme, anti-rust layers are arranged on the surfaces of the upper working table 3 and the lower working table 4, and the surface precision of the anti-rust layers is 0.01-0.03.
In order to facilitate the position fixation between the single bipolar plate and the lower worktable, as an improvement of the technical scheme, the lower worktable 4 is designed into a vacuum adsorption worktable, and porous adsorption is arranged on the lower worktable.
The rack in the airtight detection hydraulic press for the single bipolar plate in each embodiment is vertical, and the rack can also be horizontal, and the structure of the rack is consistent with that of the vertical structure, only the upper workbench and the lower workbench are respectively corresponding to the left workbench and the right workbench, and the hydraulic cylinder is correspondingly transverse.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (5)
1. An air tightness detection hydraulic machine for a single bipolar plate is characterized by comprising: the air tightness detection device comprises a rack (1), a hydraulic cylinder (2), an upper workbench (3), a lower workbench (4), a hydraulic controller (5) and a multi-path air tightness detection system;
the frame (1) comprises: the device comprises an upper beam (11), a base (12) and four upright columns (13), wherein the upper beam (11) and the base (12) are sleeved at the upper ends and the lower ends of the four upright columns (13) respectively through oil-free lubrication and are fixed by locking nuts (14);
the hydraulic cylinder (2) comprises a cylinder body (21) and a piston rod (22), and the cylinder body (21) is fixedly connected with the base (12);
the upper workbench (3) is fixedly sleeved on the four upright posts (13) through oil-free lubricating sleeves;
the lower workbench (4) is sleeved on the four upright posts (13) through oil-free lubrication, the lower workbench (4) is arranged opposite to the upper workbench (3), and the lower surface of the lower workbench (4) is in driving connection with the upper end of a piston rod (22) in the hydraulic cylinder (2);
the output end of the hydraulic controller (5) is connected with the control end of the hydraulic cylinder (2);
the airtightness detection system includes: the air conditioner comprises three air inlet branches, three air outlet branches and a controller;
the three gas inlet branches are arranged in parallel, the gas inlet end of each gas inlet branch is communicated with a gas source, the gas outlet end of each gas inlet branch is communicated with the inlet of a gas cavity or a water cavity in the single bipolar plate to be detected in a one-to-one correspondence mode, a gas inlet electromagnetic valve, a pressure gauge and a flow meter are arranged on each gas inlet branch, and the pressure gauge and the flow meter are located at the downstream of the gas inlet electromagnetic valve;
the three gas outlet branches are arranged in parallel, the gas inlet end of each gas outlet branch is respectively communicated with the outlets of the gas cavity or the water cavity in the single bipolar plate to be detected in a one-to-one correspondence mode, and each gas outlet branch is provided with a pressure relief electromagnetic valve;
the input end of the controller is respectively connected with the output end of the pressure gauge and the output end of the flow meter on each air inlet branch, and the output end of the controller is respectively connected with the control end of the air inlet electromagnetic valve on each air inlet branch and the control end of the pressure relief electromagnetic valve on each air outlet branch.
2. The hydraulic machine for tightness detection of monolithic bipolar plates according to claim 1, wherein said tightness detection system further comprises: a display;
the input end of the display is respectively connected with each air inlet electromagnetic valve, the pressure gauge, the flow meter and each pressure relief electromagnetic valve on the air outlet branch, and the display is used for respectively displaying the opening and closing states of the air inlet electromagnetic valve on the air inlet branch and the pressure relief electromagnetic valve on the air outlet branch, and the pressure value measured by the pressure gauge and the flow value measured by the flow meter.
3. The vapor lock detection hydraulic machine for a monolithic bipolar plate as claimed in claim 2, wherein each of the inlet branches is further provided with a flow sensor, and an output end of the flow sensor is connected with an input end of the controller.
4. The air tightness detection hydraulic machine for the single bipolar plate according to claim 1, wherein the surface of the upper workbench (3) and the surface of the lower workbench (4) are both provided with an anti-rust layer, and the surface precision of the anti-rust layer is 0.01-0.03.
5. The hydraulic machine for tightness detection of monolithic bipolar plates according to claim 1, characterized in that said lower bench (4) is a vacuum adsorption bench.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920640411.5U CN209858153U (en) | 2019-05-07 | 2019-05-07 | Airtight detection hydraulic machine for single bipolar plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920640411.5U CN209858153U (en) | 2019-05-07 | 2019-05-07 | Airtight detection hydraulic machine for single bipolar plate |
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| CN209858153U true CN209858153U (en) | 2019-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044557A (en) * | 2019-05-07 | 2019-07-23 | 大连天能装备制造有限公司 | A kind of airtight detection hydraulic press of monolithic bipolar plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044557A (en) * | 2019-05-07 | 2019-07-23 | 大连天能装备制造有限公司 | A kind of airtight detection hydraulic press of monolithic bipolar plate |
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