CN210603772U - Device for full-automatically detecting air tightness of fuel cell stack - Google Patents
Device for full-automatically detecting air tightness of fuel cell stack Download PDFInfo
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- CN210603772U CN210603772U CN201921289745.9U CN201921289745U CN210603772U CN 210603772 U CN210603772 U CN 210603772U CN 201921289745 U CN201921289745 U CN 201921289745U CN 210603772 U CN210603772 U CN 210603772U
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Abstract
The utility model discloses a device of full automatization detection fuel cell pile gas tightness. The device, including the gas bomb, total intake pipe, three inlet manifold that end intercommunication mutually gives vent to anger with total intake pipe, total outlet duct, three exhalent trachea with the inlet end intercommunication of total outlet duct, pressure detector and gas flowmeter, the inlet end and the gas bomb intercommunication of total intake pipe, three inlet manifold respectively with the hydrogen gas chamber of fuel cell pile, the air inlet intercommunication of water chamber and air chamber, three exhalent trachea respectively with the hydrogen gas chamber of fuel cell pile, the gas outlet intercommunication of water chamber and air chamber, total intake pipe, all establish the valve on three inlet manifold and the three exhalent trachea, pressure detector installs in total intake pipe, and be located on the pipeline section between valve and the inlet manifold in this total intake pipe, gas flowmeter installs on total outlet duct. The utility model discloses can realize having reduced the cost of labor to the full automated inspection of fuel cell pile gas tightness, quantify the value of gas tightness.
Description
Technical Field
The utility model relates to a fuel cell technical field especially relates to a device of full automatization detection fuel cell pile gas tightness.
Background
With the development of the industry of automobile hydrogen fuel cells, more and more enterprises develop the galvanic pile independently, and the airtightness of the galvanic pile must be detected in the production process of the galvanic pile. However, the industry has not yet established standards for leak tightness testing, let alone devices for leak testing specifically. At present, most enterprises adopt from taking simple and easy test platform, connect air supply and pile to detect, and the standardization is not high, and the operability is loaded down with trivial details.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a value of quantitative gas tightness and detect the device of full automatization detection fuel cell galvanic pile gas tightness that the precision is high to the aforesaid of prior art not enough.
The purpose of the utility model can be realized through the following technical scheme:
a device for fully automatically detecting the air tightness of a fuel cell stack comprises a gas storage bottle, a main gas inlet pipe, three branch gas inlet pipes, a main gas outlet pipe, three branch gas pipes, a pressure detector and a gas flowmeter, wherein the three branch gas inlet pipes are communicated with the gas outlet end of the main gas inlet pipe; the air inlet end of the main air inlet pipe is communicated with the air storage bottle, the three branch air inlet pipes are respectively communicated with the hydrogen cavity, the water cavity and the air inlet of the air cavity of the fuel cell stack, and the three branch air inlet pipes are respectively communicated with the hydrogen cavity, the water cavity and the air outlet of the air cavity of the fuel cell stack; the total air inlet pipe, the three branch air inlet pipes and the three branch air outlet pipes are all provided with valves for opening or closing the total air inlet pipe, the pressure detector is arranged on the total air inlet pipe and positioned on the valve on the total air inlet pipe and the pipeline section between the branch air inlet pipes, and the gas flowmeter is arranged on the total air outlet pipe.
Preferably, all the valves are solenoid valves.
Preferably, the air tightness detection device further comprises a controller, and the controller is electrically connected with all the electromagnetic valves, the pressure detector and the gas flow meter respectively.
Preferably, the controller includes pressure control module, valve control module, time control module, sequence control module and flow detection module, pressure control module, sequence control module all with valve control module electric connection, pressure control module, flow detection module all with time control module electric connection, pressure control module with pressure detector electric connection, valve control module respectively with all solenoid valve electric connection, flow detection module with gas flowmeter electric connection.
Preferably, three the branch intake pipe through admit air the connecting pipe with total intake pipe intercommunication, the both ends of admitting air the connecting pipe are sealed, total intake pipe's the end of giving vent to anger is connected on the pipe wall of admitting air the connecting pipe, and with the inside intercommunication of admitting air the connecting pipe, it is three branch intake pipe is respectively spaced setting up on the connecting pipe of admitting air, and with the connecting pipe of admitting air is linked together.
Preferably, the air inlet connecting pipe is perpendicular to the main air inlet pipe, and the three branch air inlet pipes are perpendicular to the air inlet connecting pipe.
Preferably, three the exhaling trachea through give vent to anger the connecting pipe with the main outlet duct intercommunication, the both ends of the connecting pipe of giving vent to anger are sealed, the inlet end of main outlet duct is connected on the pipe wall of the connecting pipe of giving vent to anger, and with the inside intercommunication of the connecting pipe of giving vent to anger, it is three the exhaling trachea is respectively spaced setting up on the connecting pipe of giving vent to anger, and with the connecting pipe of giving vent to anger is linked together.
Preferably, the air outlet connecting pipe is perpendicular to the main air outlet pipe, and the three branch air pipes are perpendicular to the air outlet connecting pipe.
Preferably, the gas stored in the gas cylinder is nitrogen.
The utility model provides a device of full automated inspection fuel cell pile gas tightness's concrete operating procedure as follows:
s1, testing the leakage of a fuel cell stack: closing the valves on the three gas outlet pipes, opening the valves on the main gas inlet pipe and the three gas outlet pipes, closing the valves on the main gas inlet pipe after the pressure is stabilized at a preset value, reading a pressure value after the pressure is stabilized for a period of time, and calculating a pressure loss value in the period of time;
s2, testing the leakage of the hydrogen gas cavity and the air cavity of the fuel cell stack: respectively opening three valves on the main gas inlet pipe, the branch gas inlet pipe communicated with the hydrogen cavity and the branch gas pipe communicated with the air cavity, closing the rest valves, maintaining the inlet pressure at a preset value for a period of time, and measuring the average gas leakage rate in the period of time through the gas flowmeter;
s3, testing the series leakage of the water cavity and the hydrogen cavity of the fuel cell stack: respectively opening three valves on the main gas inlet pipe, the branch gas inlet pipe communicated with the water cavity and the gas outlet pipe communicated with the hydrogen cavity, closing the rest valves, maintaining the gas inlet pressure at a preset value for a period of time, and measuring the average gas leakage rate in the period of time through the gas flowmeter;
s4, testing the series leakage of the water cavity and the air cavity of the fuel cell stack: and respectively opening three valves on the main gas inlet pipe, the branch gas inlet pipe communicated with the water cavity and the branch gas pipe communicated with the air cavity, closing the rest valves, maintaining the inlet gas pressure at a preset value for a period of time, and measuring the average gas leakage rate in the period of time through the gas flowmeter.
The utility model discloses a device of full automatization detection fuel cell pile gas tightness uses the device of a full automatization detection fuel cell pile gas tightness, through being connected the device with the fuel cell pile that awaits measuring, sets for detection pressure and time, realizes the detection of pile gas tightness under fixed step, and the testing result of gas tightness can be quantified through the numerical value of pressure loss value and gas leakage rate, detects the precision height.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
fig. 2 is a detection schematic block diagram of embodiment 2 of the present invention.
The notation in the figure is:
1. a gas cylinder; 2. a main air inlet pipe; 3. three branch air inlet pipes; 4. a main air outlet pipe; 5. three gas outlet pipes; 6. a pressure detector; 7. a gas flow meter; 8. a hydrogen gas chamber; 9. a water chamber; 10. an air chamber; 11. an air inlet; 12. an air outlet; 13 a valve; 14. an air inlet connecting pipe; 15. an air outlet connecting pipe; 16. a controller; 161. a pressure control module; 162. a valve control module; 163. a time control module; 164. a sequence control module; 165. and a flow detection module.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Example 1
As shown in fig. 1, the device for automatically detecting the air tightness of a fuel cell stack of the present invention comprises a gas bomb 1, a total gas inlet pipe 2, three branch gas inlet pipes 3 which are all communicated with the gas outlet end of the total gas inlet pipe 2, a total gas outlet pipe 4, three gas outlet pipes 5 which are communicated with the gas inlet end of the total gas outlet pipe 4, a pressure detector 6 and a gas flowmeter 7; the air inlet end of the main air inlet pipe 2 is communicated with an air storage bottle 1, the three branch air inlet pipes 3 are respectively communicated with an air inlet 11 of a hydrogen cavity 8, a water cavity 9 and an air cavity 10 of the fuel cell stack, and the three branch air outlet pipes 5 are respectively communicated with an air outlet 12 of the hydrogen cavity 8, the water cavity 9 and the air cavity 10 of the fuel cell stack; the total air inlet pipe 2, the three branch air inlet pipes 3 and the three branch air outlet pipes 5 are all provided with valves 13 for opening or closing the total air inlet pipes, the pressure detector 6 is arranged on the total air inlet pipe 2 and is positioned on a pipeline section between the valve 13 on the total air inlet pipe 2 and the branch air inlet pipe 3, and the gas flowmeter 7 is arranged on the total air outlet pipe 4.
The utility model discloses a device of full automatization detection fuel cell pile gas tightness uses the device of a full automatization detection fuel cell pile gas tightness, through being connected the device with the fuel cell pile that awaits measuring, sets for detection pressure and time, realizes the detection of pile gas tightness under fixed step, and the testing result of gas tightness can be quantified through the numerical value of pressure loss value and gas leakage rate, detects the precision height.
The three air inlet branch pipes 3 and the air inlet manifold 2 can be communicated in various ways, and are not limited in the embodiment, the three air inlet branch pipes 3 can be communicated with the air inlet manifold 2 through the air inlet connecting pipe 14, two ends of the air inlet connecting pipe 14 are sealed, the air outlet end of the air inlet manifold 2 is connected to the pipe wall of the air inlet connecting pipe 14 and is communicated with the inside of the air inlet connecting pipe 14, and the three air inlet branch pipes 3 are respectively arranged on the air inlet connecting pipe 14 at intervals and are communicated with the air inlet connecting pipe 14. The gas in the main gas inlet pipe firstly enters the gas inlet connecting pipe and then respectively enters the three branch gas inlet pipes through the gas inlet connecting pipe, so that the uniformity of the gas pressure in the three branch gas inlet pipes is ensured.
In another practical mode, the main air inlet pipe is provided with an air inlet interface and is communicated with the three branch air inlet pipes through the air inlet interface, so that the uniformity of the air pressure introduced into the three branch air inlet pipes is ensured.
The connection mode of the air inlet connection pipe 14 and the main air inlet pipe 2 is various, and is not limited herein, in this embodiment, the air inlet connection pipe 14 may be perpendicular to the main air inlet pipe 2, and all the three branch air inlet pipes 3 may be perpendicular to the air inlet connection pipe 14. The pipeline is through the mode of perpendicular connection for the space occupies lessly, and the installation and the dismantlement of being convenient for, it is also comparatively convenient to place or remove, has also guaranteed holistic pleasing to the eye simultaneously.
The communication mode of three exhale trachea 5 and total outlet duct 4 can be multiple, do not do the injecion here, and in this embodiment, three exhale trachea 5 can be through giving vent to anger connecting pipe 15 and total outlet duct 4 intercommunication, and the both ends of giving vent to anger connecting pipe 15 are sealed, and the inlet end of total outlet duct 4 is connected on the pipe wall of giving vent to anger connecting pipe 15, and with the inside intercommunication of giving vent to anger connecting pipe 15, three exhale trachea 5 is respectively the spaced setting on giving vent to anger connecting pipe 15, and is linked together with giving vent to ange.
In another practical mode, the main air outlet pipe is provided with an air outlet interface and is directly communicated with the three branch air pipes through the air outlet interface, the air outlet pipe is not required to be connected, and the occupied space is small.
The connection relationship between the air outlet connection pipe 15 and the main air outlet pipe 4 can be various, and is not limited herein, in this embodiment, the air outlet connection pipe 15 can be perpendicular to the main air outlet pipe 4, and all the three branch air pipes 5 can be perpendicular to the air outlet connection pipe 15. The pipeline is through the mode of perpendicular connection for the space occupies lessly, and the installation and the dismantlement of being convenient for, it is also comparatively convenient to place or remove, has also guaranteed holistic pleasing to the eye simultaneously.
In order to improve the detection accuracy, the range of the pressure detector 6 in this embodiment may be 0 to 150kPa, and the accuracy of the gas flow meter 7 in this embodiment may be 0.1 mL/min.
The gas stored in the gas cylinder 1 may be various, and is not limited herein, and in this embodiment, the gas stored in the gas cylinder 1 is nitrogen.
In practical application, the device for automatically detecting the air tightness of the fuel cell stack in the embodiment firstly connects the fuel cell stack to be detected with the air tightness detection device, and records the number of bipolar plates contained in the fuel cell stack to be detected, and the specific operation steps are as follows:
s1, testing the leakage of a fuel cell stack: closing valves 13 on three gas outlet pipes 5, opening valves 13 on a main gas inlet pipe 2 and three gas inlet pipes 3, closing the valve 13 on the main gas inlet pipe 2 after the pressure is stabilized at 100kPa, reading a pressure value after the pressure is stabilized for 10min, calculating a pressure loss value in the time period, and considering that the galvanic pile leaks outside when the pressure loss value is greater than 1 kPa;
s2, testing the series leakage of the hydrogen gas cavity 8 and the air cavity 10 of the fuel cell stack: opening three valves 13 on a main gas inlet pipe 2, a branch gas inlet pipe 3 communicated with a hydrogen cavity 8 and an exhaust gas pipe 5 communicated with an air cavity 10, closing the other valves 13, maintaining the gas inlet pressure at 50kPa for 5min, measuring the average gas leakage rate in 5min through a gas flowmeter 7, and considering that the hydrogen cavity 8 and the air cavity 10 leak in series when the average gas leakage rate is more than 0.5 mL/min/piece; otherwise, the product is qualified, and the number of 0.5 mL/min/piece can be adjusted according to the actual process requirement.
S3, testing the series leakage of the water cavity 9 and the hydrogen cavity 8 of the fuel cell stack: opening three valves 13 on a main gas inlet pipe 2, a branch gas inlet pipe 3 communicated with a water cavity 9 and an exhaust gas pipe 5 communicated with a hydrogen cavity 8, closing the other valves 13, maintaining the gas inlet pressure at 50kPa for 5min, measuring the average gas leakage rate in the time period through a gas flowmeter 7, and considering that the water cavity 9 and the hydrogen cavity 8 leak in series when the average gas leakage rate is more than 0.5 mL/min/piece; otherwise, the product is qualified, and the number of 0.5 mL/min/piece can be adjusted according to the actual process requirement.
S4, testing the series leakage of the water cavity 9 and the air cavity 10 of the fuel cell stack: three valves 13 on a total air inlet pipe 2, a branch air inlet pipe 3 communicated with a water cavity 9 and a branch air outlet pipe 5 communicated with an air cavity 10 are respectively opened, the other valves 13 are closed, the air inlet pressure is maintained at 50kPa for 5min, the average gas leakage rate in the time period is measured through a gas flowmeter 7, and when the average gas leakage rate is more than 0.5 mL/min/sheet, the water cavity 9 and the air cavity 10 are considered to be leaked. Otherwise, the product is qualified, and the number of 0.5 mL/min/piece can be adjusted according to the actual process requirement.
Example 2
The present embodiment is different from embodiment 1 in that all the valves 13 involved in the present embodiment may be solenoid valves in order to realize the automatic airtightness detection function.
As shown in fig. 2, the present embodiment may further include a controller 16, and all of the solenoid valve 13, the pressure detector 6, and the gas flowmeter 7 are electrically connected to the controller 16.
The controller 16 of the present embodiment may include a pressure control module 161, a valve control module 162, a time control module 163, a sequence control module 164, and a flow detection module 165; the pressure control module 161 and the sequence control module 164 are electrically connected to the valve control module 162; the pressure control module 161 and the flow detection module 165 are electrically connected to the time control module 163; the valve control module 162 controls the opening and closing of the valve 13 through electrical connection with all the electromagnetic valves, the pressure detector 6 transmits the detected pressure value to the pressure control module 161 electrically connected thereto, and the pressure control module 161 can send an instruction to the valve 13 control module to control the opening degree of the valve 13, so that the pressure reaches a certain set value; the time control module 163 can control the time during which the pressure is stable during the test; the sequence control module 164 may issue commands to the valve control module 162 to control the opening and closing of each valve 13 at different sensing steps; the flow detection module 165 is electrically connected to the gas flowmeter 7, so as to read data detected by the flowmeter.
The embodiment may further include a computer device connected to the controller 16, wherein the computer device may be connected to the network port of the controller 16 through the USB port, so as to implement mutual transmission of data in the computer device and the controller 16, and the data in the computer device may be downloaded.
Use the utility model discloses a device of full automatization detection fuel cell pile gas tightness, when practical application, at first the fuel cell pile that will await measuring is connected with gas tightness detection device, and note the number of pieces of the bipolar plate that the fuel cell pile that awaits measuring contains, open the computer equipment, operation gas tightness detects software, set for time in software, pressure, step, the controller 16 is given with the instruction transmission to the computer, controller 16 can realize the inlet pressure to the gas tightness testing process, duration and the control of detection step, concrete operating procedure is as follows:
s1, testing the leakage of a fuel cell stack: the sequence control module 164 instructs the valve 13 control module such that the valve control module 162 closes the valves 13 on the three exhaust pipes 5, opens the valves 13 on the total intake pipe 2 and the three branch intake pipes 3, the pressure control module 161 receives the detection signal of the pressure detector 6, when the pressure has stabilized at 100kPa, the pressure control module 161 sends a signal to the valve control module 162 and the time control module 163, the valve control module 162 closes the valve 13 in the total intake pipe 2, the time control module 163 starts counting down, after the internal air pressure is stabilized for 10min, the pressure control module 161 transmits the detected pressure value within 10min to the software of the computer equipment in real time, the software calculates the pressure loss value in the time period, when the pressure loss value is larger than 1kPa, the galvanic pile is considered to be leaked, otherwise, the galvanic pile is considered to be qualified, and the number of 1kPa can be adjusted according to the actual process requirement; an alarm device can be arranged and is electrically connected with the software, and when the software judges that the electric pile leaks, the alarm device sends an alarm signal and transmits the alarm signal back to the software;
s2, testing the series leakage of the hydrogen gas cavity 8 and the air cavity 10 of the fuel cell stack: the sequence control module 164 gives an instruction to the valve control module 162 to make the valve control module 162 open the valves 13 on the total gas inlet pipe 2, the branch gas inlet pipe 3 communicated with the hydrogen chamber 8 and the branch gas pipe 5 communicated with the air chamber 10, close the rest of the valves 13, the pressure control module 161 receives the detection signal of the pressure detector 6, when the pressure reaches 50kPa, the pressure control module 161 gives an instruction to the valve control module 162 and the time control module 163, the valve control module 162 controls the valves 13 on the total gas inlet pipe 2 to make the pressure stable at 50kPa, the time control module 163 starts counting down, after the internal air pressure is stable for 5min, the flow detection module 165 transmits the gas leakage rate value detected in the gas flowmeter 5min to the software of the computer equipment in real time, the software calculates the average gas leakage rate in the time period, when the average gas leakage rate is greater than 0.5 mL/min/sheet, the hydrogen chamber 8 and the air chamber 10 are considered to leak; otherwise, the product is qualified, and the number of 0.5 mL/min/piece can be adjusted according to the actual process requirement. An alarm device can be arranged and is electrically connected with the software, and when the software judges that the electric pile has the series leakage, the alarm device sends an alarm signal and transmits the alarm signal back to the software;
s3, testing the series leakage of the water cavity 9 and the hydrogen cavity 8 of the fuel cell stack: the sequence control module 164 gives an instruction to the valve control module 162 to make the valve control module 162 open three valves 13 on the total gas inlet pipe 2, on the branch gas inlet pipe 3 communicated with the water chamber 9 and on the branch gas pipe 5 communicated with the hydrogen chamber 8, close the rest of the valves 13, the pressure control module 161 receives the detection signal of the pressure detector 6, when the pressure reaches 50kPa, the pressure control module 161 gives an instruction to the valve control module 162 and the time control module 163, the valve control module 162 controls the valves 13 on the total gas inlet pipe 2 to make the pressure stable at 50kPa, the time control module 163 starts counting down, after the internal gas pressure is stable for 5min, the flow detection module 165 transmits the gas leakage rate value detected in the gas flowmeter 5min to the software of the computer device in real time, the software calculates the average gas leakage rate in the time period, when the average gas leakage rate is greater than 0.5 mL/min/piece, the water chamber 9 and the hydrogen chamber 8 are considered to leak; otherwise, the product is qualified, and the number of 0.5 mL/min/piece can be adjusted according to the actual process requirement. An alarm device can be arranged and is electrically connected with the software, and when the software judges that the electric pile has the series leakage, the alarm device sends an alarm signal and transmits the alarm signal back to the software;
s4, testing the series leakage of the water cavity 9 and the air cavity 10 of the fuel cell stack: the sequence control module 164 gives an instruction to the valve control module 162 to make the valve control module 162 open three valves 13 on the total intake pipe 2, on the branch intake pipe 3 communicated with the water chamber 9 and on the branch intake pipe 5 communicated with the air chamber 10, close the rest of the valves 13, the pressure control module 161 receives the detection signal of the pressure detector 6, when the pressure reaches 50kPa, the pressure control module 161 gives an instruction to the valve control module 162 and the time control module 163, the valve control module 162 controls the valves 13 on the total intake pipe 2 to make the pressure stabilize at 50kPa, the time control module 163 starts counting down, after the internal air pressure stabilizes for 5min, the flow detection module 165 transmits the gas leakage rate value detected in the gas flowmeter 5min to the software of the computer device in real time, the software calculates the average gas leakage rate in the time period, when the average gas leakage rate is greater than 0.5 mL/min/piece, the water chamber 9 and the air chamber 10 are considered to leak; otherwise, the product is qualified, and the number of 0.5 mL/min/piece can be adjusted according to the actual process requirement. An alarm device can be arranged and is electrically connected with the software, and when the software judges that the electric pile has the leakage, the alarm device sends an alarm signal and transmits the alarm signal back to the software.
Use the utility model discloses a device of full automatization detection fuel cell galvanic pile gas tightness through being connected the device with the galvanic pile, only needs to set for time, pressure, realizes the full automated inspection of galvanic pile gas tightness at fixed step, greatly reduced the cost of labor to can quantify the value of gas tightness, detect the precision height.
The above is not relevant and is applicable to the prior art.
Although certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention, which is to be construed as broadly as the present invention will suggest themselves to those skilled in the art to which the invention pertains and which is susceptible to various modifications or additions and similar arrangements to the specific embodiments described herein without departing from the scope of the invention as defined in the appended claims. It should be understood by those skilled in the art that any modifications, equivalent substitutions, improvements and the like made to the above embodiments according to the technical spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. The device for automatically detecting the air tightness of the fuel cell stack is characterized by comprising a gas storage bottle (1), a main gas inlet pipe (2), three branch gas inlet pipes (3) and a main gas outlet pipe (4) which are communicated with the gas outlet end of the main gas inlet pipe (2), three branch gas outlet pipes (5) which are communicated with the gas inlet end of the main gas outlet pipe (4), a pressure detector (6) and a gas flowmeter (7); the air inlet end of the main air inlet pipe (2) is communicated with the air storage bottle (1), the three branch air inlet pipes (3) are respectively communicated with the hydrogen cavity (8), the water cavity (9) and the air inlet (11) of the air cavity (10) of the fuel cell stack, and the three branch air outlet pipes (5) are respectively communicated with the hydrogen cavity (8), the water cavity (9) and the air outlet (12) of the air cavity (10) of the fuel cell stack; total intake pipe (2), three branch intake pipe (3) and three all be equipped with on exhaling trachea (5) and open or close its valve (13), pressure detector (6) are installed on total intake pipe (2), and be located valve (13) on this total intake pipe (2) with on the pipeline section between branch intake pipe (3), gas flowmeter (7) are installed on total outlet duct (4).
2. The apparatus for the full-automatic detection of the gas tightness of a fuel cell stack according to claim 1, wherein all the valves (13) are solenoid valves.
3. The device for automatically detecting the air tightness of the fuel cell stack according to claim 2, further comprising a controller (16), wherein the controller (16) is electrically connected with all the electromagnetic valves, the pressure detector (6) and the gas flowmeter (7) respectively.
4. The device for fully automated testing of fuel cell stack airtightness of claim 3, characterized in that the controller (16) comprises a pressure control module (161), a valve control module (162), a time control module (163), a sequence control module (164) and a flow detection module (165), the pressure control module (161) and the sequence control module (164) are electrically connected with the valve control module (162), the pressure control module (161) and the flow detection module (165) are both electrically connected with the time control module (163), the pressure control module (161) is electrically connected with the pressure detector (6), the valve control module (162) is electrically connected with all the electromagnetic valves respectively, and the flow detection module (165) is electrically connected with the gas flowmeter (7).
5. The device for automatically detecting the air tightness of the fuel cell stack according to any one of claims 1 to 4, wherein three branch air inlet pipes (3) are communicated with the main air inlet pipe (2) through air inlet connecting pipes (14), two ends of each air inlet connecting pipe (14) are closed, an air outlet end of each main air inlet pipe (2) is connected to a pipe wall of each air inlet connecting pipe (14) and is communicated with the inside of each air inlet connecting pipe (14), and the three branch air inlet pipes (3) are respectively arranged on the air inlet connecting pipes (14) at intervals and are communicated with the air inlet connecting pipes (14).
6. The device for automatically detecting the airtightness of a fuel cell stack according to claim 5, wherein the air inlet connection pipe (14) is perpendicular to the main air inlet pipe (2), and the three branch air inlet pipes (3) are perpendicular to the air inlet connection pipe (14).
7. The apparatus for fully automated detecting of fuel cell stack airtightness according to claim 5, wherein three of the branch air pipes (5) are connected to the main air outlet pipe (4) through air outlet connecting pipes (15), both ends of the air outlet connecting pipes (15) are sealed, an air inlet end of the main air outlet pipe (4) is connected to a pipe wall of the air outlet connecting pipes (15) and is connected to an inside of the air outlet connecting pipes (15), and the three branch air pipes (5) are respectively disposed on the air outlet connecting pipes (15) at intervals and are connected to the air outlet connecting pipes (15).
8. The apparatus for automatically detecting the airtightness of a fuel cell stack according to claim 7, wherein the outlet connection pipe (15) is perpendicular to the main outlet pipe (4), and three of the outlet connection pipes (5) are perpendicular to the outlet connection pipe (15).
9. The device for automatically detecting the airtightness of the fuel cell stack according to claim 1, wherein the gas stored in the gas cylinder (1) is nitrogen.
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| CN201921289745.9U CN210603772U (en) | 2019-08-09 | 2019-08-09 | Device for full-automatically detecting air tightness of fuel cell stack |
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| CN201921289745.9U CN210603772U (en) | 2019-08-09 | 2019-08-09 | Device for full-automatically detecting air tightness of fuel cell stack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487488A (en) * | 2019-08-09 | 2019-11-22 | 武汉中极氢能产业创新中心有限公司 | The device and method of full-automation detection fuel cell pile air-tightness |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487488A (en) * | 2019-08-09 | 2019-11-22 | 武汉中极氢能产业创新中心有限公司 | The device and method of full-automation detection fuel cell pile air-tightness |
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