CN110487488A - The device and method of full-automation detection fuel cell pile air-tightness - Google Patents
The device and method of full-automation detection fuel cell pile air-tightness Download PDFInfo
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- CN110487488A CN110487488A CN201910736570.XA CN201910736570A CN110487488A CN 110487488 A CN110487488 A CN 110487488A CN 201910736570 A CN201910736570 A CN 201910736570A CN 110487488 A CN110487488 A CN 110487488A
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- 239000000446 fuel Substances 0.000 title claims abstract description 61
- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 239000007789 gas Substances 0.000 claims abstract description 70
- 239000001257 hydrogen Substances 0.000 claims abstract description 30
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 30
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000003019 stabilising Effects 0.000 claims description 2
- 210000003437 Trachea Anatomy 0.000 abstract description 2
- 241000486406 Trachea Species 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 206010069794 Device issue Diseases 0.000 description 2
- 230000003796 beauty Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
Abstract
The invention discloses a kind of device and method of full-automatic detection fuel cell pile air-tightness.The device, including storage cylinder, total inlet pipe, three branch air inlet pipe being connected with the outlet side of total inlet pipe, total escape pipe, three branch escape pipes being connected to the inlet end of total escape pipe, pressure detector and gas flowmeter, the inlet end of total inlet pipe is connected to storage cylinder, three branch air inlet pipe respectively with the hydrogen chamber of fuel cell pile, water cavity is connected to the air inlet of air chamber, three expenditure tracheaes respectively with the hydrogen chamber of fuel cell pile, water cavity is connected to the gas outlet of air chamber, total inlet pipe, valve is all provided on three branch air inlet pipe and three branch escape pipes, pressure detector is mounted on total inlet pipe, and it is located on the valve on the total inlet pipe and the line segments between branch air inlet pipe, gas flowmeter is mounted on total escape pipe.The present invention, which is able to achieve, automatically detects fuel cell pile air-tightness, reduces cost of labor, quantifies the value of air-tightness.
Description
Technical field
The present invention relates to field of fuel cell technology more particularly to a kind of full-automatic detection fuel cell pile air-tightness
Device and method.
Background technique
With the development of the industry of automobile hydrogen fuel battery, the enterprise of independent development pile is more and more, produces in pile
In the process, it is necessary to which pile air-tightness is detected.However, industry for air-leakage test there are no certain standard, do not have more
There is the device specially hunted leak.Currently, most of enterprise is all using from easily-testing platform is taken, connection gas source is examined with pile
It surveys, normative not high, operability is cumbersome.
Summary of the invention
It is an object of the present invention to be directed to the above-mentioned deficiency of the prior art, a kind of value and detection for quantifying air-tightness is proposed
The device and method of full-automatic detection fuel cell pile air-tightness with high accuracy.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of device of full-automatic detection fuel cell pile air-tightness, including storage cylinder, total inlet pipe, with it is described
Three branch air inlet pipe that the outlet side of total inlet pipe is connected, are connected at total escape pipe with the inlet end of total escape pipe
Three branch escape pipes, pressure detector and gas flowmeter；The inlet end of the total inlet pipe is connected to the storage cylinder, and three
The branch air inlet pipe is connected with the air inlet of the hydrogen chamber of the fuel cell pile, water cavity and air chamber respectively, three institutes
Expenditure tracheae is stated to be connected with the gas outlet of the hydrogen chamber of the fuel cell pile, water cavity and air chamber respectively；It is described always into
The valve for opening or closing it, the pressure inspection are equipped on tracheae, three branch air inlet pipe and three branch escape pipes
It surveys device to be mounted on the total inlet pipe, and the line segments between the valve being located on the total inlet pipe and the branch air inlet pipe
On, the gas flowmeter is mounted on total escape pipe.
Preferably, all valves are solenoid valve.
Preferably, which further includes controller, the controller respectively with all solenoid valves, pressure
Force detector and gas flowmeter are electrically connected.
Preferably, the controller includes pressure control module, valve control module, time control module, sequential control
Module and flow detection module, the pressure control module, sequence control module are electrically connected with the valve control module,
The pressure control module, flow detection module with the time control module be electrically connected, the pressure control module with
The pressure detector is electrically connected, and the valve control module is electrically connected with all solenoid valves respectively, the stream
It measures detection module and the gas flowmeter is electrically connected.
Preferably, three branch air inlet pipe are connected to by inlet pipe connection with the total inlet pipe, the air inlet connection
Pipe it is closed at both ends, the outlet side of the total inlet pipe is connected on the tube wall of the inlet pipe connection, and with the air inlet connect
Nozzle interior connection, the setting that three branch air inlet pipe are respectively separated connect on the inlet pipe connection, and with the air inlet
Adapter tube is connected.
Preferably, the inlet pipe connection is vertical with the total inlet pipe, three branch air inlet pipe with the air inlet
Connecting tube is vertical.
Preferably, three branch escape pipes are connected to by outlet connecting tube with total escape pipe, the outlet connection
Pipe it is closed at both ends, the inlet end of total escape pipe is connected on the tube wall of the outlet connecting tube, and with the outlet connect
Nozzle interior connection, the setting that three expenditure tracheaes are respectively separated connect in the outlet connecting tube, and with the outlet
Adapter tube is connected.
Preferably, the outlet connecting tube is vertical with total escape pipe, three branch escape pipes with the outlet
Connecting tube is vertical.
Preferably, the gas stored in the storage cylinder is nitrogen.
The present invention provides a kind of method of full-automatic detection fuel cell pile air-tightness, using above-mentioned device, tool
Steps are as follows for gymnastics work:
S1. test fuel cell pile leakage: the valve on three branch escape pipes is closed, the total inlet pipe is opened
With the valve in three branch air inlet pipe, when pressure stablize after preset value, close described on the total inlet pipe
Valve reads pressure value, and calculate pressure loss value in the period after a period of stabilisation；
S2. test fuel cell pile hydrogen chamber and the leakage of air chamber string: opening respectively on the total inlet pipe and hydrogen chamber
Three valves on the branch escape pipe being connected in the branch air inlet pipe being connected and with air chamber, close remaining
Admission pressure is maintained preset value, continued for some time by the valve, is measured in the period by the gas flowmeter
Gas leaks Mean Speed；
S3. fuel cell pile water cavity and the leakage of hydrogen chamber string are tested: opening be connected on the total inlet pipe, with water cavity respectively
Three valves on the branch escape pipe being connected in the logical branch air inlet pipe and with hydrogen chamber, are closed described in remaining
Admission pressure is maintained preset value, continued for some time by valve, measures gas in the period by the gas flowmeter
Leak Mean Speed；
S4. fuel cell pile water cavity and the leakage of air chamber string are tested: opening be connected on the total inlet pipe, with water cavity respectively
Three valves on the branch escape pipe being connected in the logical branch air inlet pipe and with air chamber, are closed described in remaining
Admission pressure is maintained preset value, continued for some time by valve, measures gas in the period by the gas flowmeter
Leak Mean Speed.
The device and method of a kind of full-automatic detection fuel cell pile air-tightness of the invention, using a kind of full-automatic
The device for changing detection fuel cell pile air-tightness sets detection by the way that the device to be connect with fuel cell pile to be measured
Pressure and time, the detection of pile air-tightness is realized under fixing step, the testing result of air-tightness can pass through pressure loss
The numerical value of value and gas leakage rate quantifies, and detection precision is high.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the embodiment of the present invention 1；
Fig. 2 is the testing principle block diagram of the embodiment of the present invention 2.
Description of symbols in figure:
1, storage cylinder；2, total inlet pipe；3, three branch air inlet pipe；4, total escape pipe；5, three branch escape pipes；6, pressure is examined
Survey device；7, gas flowmeter；8, hydrogen chamber；9, water cavity；10, air chamber；11, air inlet；12, gas outlet；13 valves；14, into
Gas connecting tube；15, outlet connecting tube；16, controller；161, pressure control module；162, valve control module；163, the time is controlled
Molding block；164, sequence control module；165, flow detection module.
Specific embodiment
Below be invention specific embodiment and in conjunction with attached drawing, technical scheme of the present invention will be further described, but
Invention is not limited to these embodiments.
Embodiment 1
As shown in Figure 1, a kind of device of full-automatic detection fuel cell pile air-tightness of the invention, the device include
Storage cylinder 1, total inlet pipe 2, three branch air inlet pipe 3 being connected with the outlet side of total inlet pipe 2, total escape pipe 4, with it is total go out
Three branch escape pipes 5, pressure detector 6 and the gas flowmeter 7 that the inlet end of tracheae 4 is connected；The inlet end of total inlet pipe 2
It is connected to storage cylinder 1, the air inlet with the hydrogen chamber 8, water cavity 9 and air chamber 10 of fuel cell pile respectively of three branch air inlet pipe 3
Mouthfuls 11 are connected, three branch escape pipes 5 gas outlet 12 with the hydrogen chamber 8 of fuel cell pile, water cavity 9 and air chamber 10 respectively
It is connected；It is equipped with the valve 13 for opening or closing it on 2, three branch air inlet pipe 3 of total inlet pipe and three branch escape pipes 5, is pressed
Force detector 6 is mounted on total inlet pipe 2, and the line segments between the valve 13 being located on the total inlet pipe 2 and branch air inlet pipe 3
On, gas flowmeter 7 is mounted on total escape pipe 4.
The device and method of a kind of full-automatic detection fuel cell pile air-tightness of the invention, using a kind of full-automatic
The device for changing detection fuel cell pile air-tightness sets detection by the way that the device to be connect with fuel cell pile to be measured
Pressure and time, the detection of pile air-tightness is realized under fixing step, the testing result of air-tightness can pass through pressure loss
The numerical value of value and gas leakage rate quantifies, and detection precision is high.
The mode of communicating of three branch air inlet pipe 3 and total inlet pipe 2 can there are many, herein without limitation, the present embodiment
In, three branch air inlet pipe 3 can be connected to by inlet pipe connection 14 with total inlet pipe 2, inlet pipe connection 14 it is closed at both ends, always
The outlet side of air inlet pipe 2 is connected on the tube wall of inlet pipe connection 14, and be connected to inside inlet pipe connection 14, three Zhi Jinqi
The setting that pipe 3 is respectively separated is connected on inlet pipe connection 14, and with inlet pipe connection 14.Gas in total inlet pipe is advanced
Enter inlet pipe connection, three branch air inlet pipe are then respectively enterd by inlet pipe connection, ensure that and be passed through in three branch air inlet pipe
The homogeneity of gas pressure.
In another enforceable mode, intake interface is provided on total inlet pipe, and be connected to three by intake interface
Branch air inlet pipe ensure that the homogeneity for being passed through the gas pressure of three branch air inlet pipe.
There are many connection types of inlet pipe connection 14 and total inlet pipe 2, herein without limitation, in the present embodiment, into
Gas connecting tube 14 can be vertical with total inlet pipe 2, and three branch air inlet pipe 3 can be vertical with inlet pipe connection 14.Pipeline passes through
Mode connected vertically is easily installed and dismantles so that space hold is smaller, places or move also more convenient, while also protecting
Whole beauty is demonstrate,proved.
The mode of communicating of three branch escape pipes 5 and total escape pipe 4 can there are many, herein without limitation, the present embodiment
In, three branch escape pipes 5 can be connected to by outlet connecting tube 15 with total escape pipe 4, outlet connecting tube 15 it is closed at both ends, always
The inlet end of escape pipe 4 is connected on the tube wall of outlet connecting tube 15, and be connected to inside outlet connecting tube 15, three branch outlets
The setting that pipe 5 is respectively separated is connected in outlet connecting tube 15, and with outlet connecting tube 15.
In another enforceable mode, outlet interface is provided on total escape pipe, and direct by the outlet interface
Three branch escape pipes are connected to, connection escape pipe is not needed, occupied space is smaller.
The connection relationship of outlet connecting tube 15 and total escape pipe 4 can there are many, herein without limitation, the present embodiment
In, outlet connecting tube 15 can be vertical with total escape pipe 4, and three branch escape pipes 5 can be vertical with outlet connecting tube 15.Pipeline
By mode connected vertically, so that space hold is smaller, is easily installed and dismantles, place or move it is also more convenient, simultaneously
Also ensure whole beauty.
To improve detection accuracy, the range of pressure detector 6 can be 0-150kPa in the present embodiment, in the present embodiment
The precision of gas flowmeter 7 can be 0.1mL/min.
The gas stored in storage cylinder 1 can there are many, here without limitation, stored in storage cylinder 1 in the present embodiment
Gas is nitrogen.
The present embodiment provides a kind of methods of full-automatic detection fuel cell pile air-tightness, using dress of the invention
It sets, in practical application, first connecting fuel cell pile to be measured with air-tightness detection device, and records fuel electricity to be measured
The piece number for the bipolar plates that pond pile is included, specific steps are as follows:
S1. test fuel cell pile leakage: the valve 13 on three branch escape pipes 5 is closed, total inlet pipe 2 and three is opened
Valve 13 in a branch air inlet pipe 3, when pressure is stablized after 100kPa, the valve 13 on closing total inlet pipe 2 stablizes 10min
Afterwards, pressure value is read, and calculates pressure loss value in the period, when pressure loss value is greater than 1kPa, it is believed that outside pile
Leakage；
S2. test fuel cell pile hydrogen chamber 8 and air chamber 10 string leakage: open total inlet pipe 2 on, with 8 phase of hydrogen chamber
Three valves 13 on the branch escape pipe 5 being connected in the branch air inlet pipe 3 of connection and with air chamber 10, close remaining valve 13,
Admission pressure is maintained into 50kPa, continues 5min, gas in 5min is measured by gas flowmeter 7 and leaks Mean Speed, works as gas
Body leaks Mean Speed and is greater than 0.5mL/min/ piece, it is believed that hydrogen chamber 8 and the string leakage of air chamber 10；Otherwise it is considered that qualification, In
Here this number of 0.5mL/min/ piece can require to be adjusted according to actual technique.
S3. fuel cell pile water cavity 9 and the string leakage of hydrogen chamber 8 are tested: opening on total inlet pipe 2, be connected with water cavity 9
Three valves 13 on the branch escape pipe 5 being connected in branch air inlet pipe 3 and with hydrogen chamber 8, close remaining valve 13, by air inlet pressure
Power maintains 50kPa, continues 5min, measures gas in the period by gas flowmeter 7 and leaks Mean Speed, when gas is let out
It leaks Mean Speed and is greater than 0.5mL/min/ piece, it is believed that water cavity 9 and the string leakage of hydrogen chamber 8；Otherwise it can consider qualification, herein
This number of 0.5mL/min/ piece can require to be adjusted according to actual technique.
S4. test fuel cell pile water cavity 9 and air chamber 10 string leakage: respectively open total inlet pipe 2 on, with 9 phase of water cavity
Three valves 13 on the branch escape pipe 5 being connected in the branch air inlet pipe 3 of connection and with air chamber 10, close remaining valve 13,
Admission pressure is maintained into 50kPa, continues 5min, gas in the period is measured by gas flowmeter 7 and leaks Mean Speed,
When gas leakage Mean Speed is greater than 0.5mL/min/ piece, it is believed that water cavity 9 and the string leakage of air chamber 10.Otherwise it can consider qualification,
This number of 0.5mL/min/ piece can require to be adjusted according to actual technique herein.
Embodiment 2
The present embodiment difference from example 1 is that, related to realize air-tightness automatic detection function, in the present embodiment
And all valves 13 all can be solenoid valve.
As shown in Fig. 2, the present embodiment can also include controller 16, all solenoid valves 13, pressure detector 6 and gas
Flowmeter 7 is electrically connected with controller 16.
The controller 16 of the present embodiment may include pressure control module 161, valve control module 162, time control mould
Block 163, sequence control module 164 and flow detection module 165；Pressure control module 161, sequence control module 164 are and valve
Door control module 162 is electrically connected；Pressure control module 161, flow detection module 165 are electrical with time control module 163
Connection；Valve control module 162 by with all solenoid valves electrically come the unlatching and closure of control valve 13, pressure detector
6 pressure values that will test are transmitted to the pressure control module 161 being electrically connected, and pressure control module 161 can give valve 13
Control module issues an instruction to the opening degree of control valve 13, and pressure is made to reach a certain setting value；163 energy of time control module
Enough control the time that pressure is stable in detection process；Sequence control module 164 can be issued an instruction to valve control module 162
Control the unlatching and closure of each valve 13 under different detecting steps；Flow detection module 165 electrically connects with gas flowmeter 7
It connects, the data of flowmeter detection is read with this.
The present embodiment can also include the computer equipment connecting with controller 16, and computer equipment can be connected by USB port
The network interface of controller 16 is connect, the mutual transmission of data in computer equipment and controller 16 is realized with this, and in computer equipment
Data can download.
The present embodiment provides a kind of methods of full-automatic detection fuel cell pile air-tightness, using a kind of full-automation
The device for detecting fuel cell pile air-tightness, in practical application, first by fuel cell pile to be measured and air-leakage test
Device connection, and the piece number for the bipolar plates that fuel cell pile to be measured is included is recorded, computer equipment is opened, air-tightness is run
Inspection software sets time, pressure, step in software, and instruction is transferred to controller 16 by computer, and controller 16 can be real
Now to the control of admission pressure, duration and detecting step during air-leakage test, specific steps are as follows:
S1. test fuel cell pile leakage: sequence control module 164 issues instruction to 13 control module of valve, so that
The valve 13 that valve control module 162 is closed on three branch escape pipes 5 is obtained, is opened on total inlet pipe 2 and three branch air inlet pipe 3
Valve 13, pressure control module 161 receive the detection signal of pressure detector 6, and when pressure is stablized after 100kPa, pressure is controlled
Module 161 issues signal to valve control module 162, time control module 163, and valve control module 162 closes total inlet pipe 2
On valve 13, time control module 163 start countdown, after internal stable gas pressure 10min, pressure control module 161 will
Detection pressure value is real-time transmitted to the software of computer equipment in 10min, and software calculates pressure loss value in the period, when
When pressure loss value is greater than 1kPa, it is believed that pile leakage, on the contrary it is considered that qualification, this number of 1kPa can basis herein
Actual technique requires to be adjusted；One alarm device can also be set herein, and alarm device is electrically connected with software, when soft
When part judges that pile leaks outside, warning device issues alarm signal and passes software back；
S2. test fuel cell pile hydrogen chamber 8 and the string leakage of air chamber 10: sequence control module 164 controls mould to valve
Block 162 issues instruction, so that valve control module 162 is opened on total inlet pipe 2, the branch air inlet pipe 3 that is connected with hydrogen chamber 8
The valve 13 on branch escape pipe 5 being connected above and with air chamber 10, closes remaining valve 13, and pressure control module 161 receives
The detection signal of pressure detector 6, when pressure reaches 50kPa, pressure control module 161 gives valve control module 162, time
Control module 163 issues instruction, and valve control module 162 controls valve 13 on total inlet pipe 2, so that pressure is stablized in 50kPa,
Time control module 163 starts countdown, and after internal stable gas pressure 5min, flow detection module 165 is by gas flowmeter
The gas leak rate numerical value detected in 5min is real-time transmitted to the software of computer equipment, and software calculates gas in the period
Mean Speed is leaked, when gas leakage Mean Speed is greater than 0.5mL/min/ piece, it is believed that hydrogen chamber 8 and the string leakage of air chamber 10；Instead
It is considered that qualification, herein this number of 0.5mL/min/ piece can according to actual technique require be adjusted.At this
In an alarm device can also be set, alarm device is electrically connected with software, when software judge pile occur string leakage, warning device
It issues alarm signal and passes software back；
S3. test fuel cell pile water cavity 9 and the string leakage of hydrogen chamber 8: sequence control module 164 is to valve control module
162 issue instruction so that valve control module 162 open on total inlet pipe 2, in the branch air inlet pipe 3 that is connected with water cavity 9 and
Three valves 13 on the branch escape pipe 5 being connected with hydrogen chamber 8, close remaining valve 13, and pressure control module 161 receives pressure
The detection signal of force detector 6, when pressure reaches 50kPa, pressure control module 161 is controlled to valve control module 162, time
Molding block 163 issues instruction, and valve control module 162 controls valve 13 on total inlet pipe 2, so that pressure is stablized in 50kPa, when
Between control module 163 start countdown, after internal stable gas pressure 5min, flow detection module 165 is by gas flowmeter 5min
The gas leak rate numerical value of interior detection is real-time transmitted to the software of computer equipment, and software calculates gas in the period and leaks
Mean Speed, when gas leakage Mean Speed is greater than 0.5mL/min/ piece, it is believed that water cavity 9 and the string leakage of hydrogen chamber 8；Otherwise it can recognize
For qualification, this number of 0.5mL/min/ piece can require to be adjusted according to actual technique herein.It herein can be with
One alarm device is set, and alarm device is electrically connected with software, and when software judges that string leakage occurs for pile, warning device issues report
Alert signal simultaneously passes software back；
S4. test fuel cell pile water cavity 9 and the string leakage of air chamber 10: sequence control module 164 is to valve control module
162 issue instruction so that valve control module 162 open on total inlet pipe 2, in the branch air inlet pipe 3 that is connected with water cavity 9 and
Three valves 13 on the branch escape pipe 5 being connected with air chamber 10, close remaining valve 13, and pressure control module 161 receives
The detection signal of pressure detector 6, when pressure reaches 50kPa, pressure control module 161 gives valve control module 162, time
Control module 163 issues instruction, and valve control module 162 controls valve 13 on total inlet pipe 2, so that pressure is stablized in 50kPa,
Time control module 163 starts countdown, and after internal stable gas pressure 5min, flow detection module 165 is by gas flowmeter
The gas leak rate numerical value detected in 5min is real-time transmitted to the software of computer equipment, and software calculates gas in the period
Mean Speed is leaked, when gas leakage Mean Speed is greater than 0.5mL/min/ piece, it is believed that water cavity 9 and the string leakage of air chamber 10；It is on the contrary
It is considered that qualification, this number of 0.5mL/min/ piece can require to be adjusted according to actual technique herein.Herein
One alarm device can also be set, alarm device is electrically connected with software, when software judges that string leakage occurs for pile, warning device
It issues alarm signal and passes software back.
The device and method of a kind of full-automatic detection fuel cell pile air-tightness of the invention, using a kind of full-automatic
The device for changing detection fuel cell pile air-tightness, by the way that the device to be connect with pile, it is only necessary to set time, pressure, In
Fixing step realizes the full-automatic detection of pile air-tightness, greatly reduces cost of labor, and can quantify the value of air-tightness,
It is high to detect precision.
It is not directed to place above, is suitable for the prior art.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that above example merely to be illustrated, the range being not intended to be limiting of the invention, belonging to the present invention
Those skilled in the art can make various modifications or additions to described specific embodiment or using class
As mode substitute, but without departing from direction of the invention or beyond the scope of the appended claims.Ability
Domain it is to be understood by the skilled artisans that according to the technical essence of the invention to made by embodiment of above it is any modification, etc.
With replacement, improvement etc., protection scope of the present invention should be included in.
Claims (10)
1. a kind of device of full-automatic detection fuel cell pile air-tightness, which is characterized in that including storage cylinder (1), always into
Tracheae (2), three branch air inlet pipe (3) being connected with the outlet side of the total inlet pipe (2), total escape pipe (4), with it is described
Three branch escape pipes (5), pressure detector (6) and the gas flowmeter (7) that the inlet end of total escape pipe (4) is connected；It is described
The inlet end of total inlet pipe (2) is connected to the storage cylinder (1), three branch air inlet pipe (3) respectively with the fuel cell
Hydrogen chamber (8), the water cavity (9) of pile are connected with the air inlet (11) of air chamber (10), and three branch escape pipes (5) are respectively
It is connected with the gas outlet (12) of the hydrogen chamber (8) of the fuel cell pile, water cavity (9) and air chamber (10)；It is described always into
The valve for opening or closing it is equipped on tracheae (2), three branch air inlet pipe (3) and three branch escape pipes (5)
(13), the pressure detector (6) is mounted on the total inlet pipe (2), and the valve (13) being located on the total inlet pipe (2)
In line segments between the branch air inlet pipe (3), the gas flowmeter (7) is mounted on total escape pipe (4).
2. a kind of device of full-automatic detection fuel cell pile air-tightness as described in claim 1, which is characterized in that all
The valve (13) is solenoid valve (13).
3. a kind of device of full-automatic detection fuel cell pile air-tightness as claimed in claim 2, further includes controller
(16), the controller (16) is electrical with all solenoid valves (13), pressure detector (6) and gas flowmeter (7) respectively
Connection.
4. a kind of device of full-automatic detection fuel cell pile air-tightness as claimed in claim 3, which is characterized in that described
Controller (16) includes pressure control module (161), valve control module (162), time control module (163), sequential control
Module (164) and flow detection module (165), the pressure control module (161), sequence control module (164) with it is described
Valve control module (162) be electrically connected, the pressure control module (161), flow detection module (165) with the time
Control module (163) is electrically connected, and the pressure control module (161) and the pressure detector (6) are electrically connected, the valve
Door control module (162) is electrically connected with all solenoid valve (13) respectively, the flow detection module (165) with it is described
Gas flowmeter (7) is electrically connected.
5. a kind of device of full-automatic detection fuel cell pile air-tightness, feature as described in claim any one of 1-4
It is, three branch air inlet pipe (3) are connected to by inlet pipe connection (14) with the total inlet pipe (2), the air inlet connection
The closed at both ends of (14) is managed, the outlet side of the total inlet pipe (2) is connected on the tube wall of the inlet pipe connection (14), and with
Connection inside the inlet pipe connection (14), the setting that three branch air inlet pipe (3) are respectively separated is in the inlet pipe connection
(14) on, and it is connected with the inlet pipe connection (14).
6. a kind of device of full-automatic detection fuel cell pile air-tightness as claimed in claim 5, which is characterized in that described
Inlet pipe connection (14) is vertical with the total inlet pipe (2), three branch air inlet pipe (3) with the inlet pipe connection (14)
Vertically.
7. a kind of device of full-automatic detection fuel cell pile air-tightness as claimed in claim 5, which is characterized in that three
The branch escape pipe (5) is connected to by outlet connecting tube (15) with total escape pipe (4), and the two of the outlet connecting tube (15)
End seal is closed, and the inlet end of total escape pipe (4) is connected on the tube wall of the outlet connecting tube (15), and is connected with the outlet
Take over (15) inside connection, the setting that three branch escape pipes (5) are respectively separated on the outlet connecting tube (15), and with
The outlet connecting tube (15) is connected.
8. a kind of device of full-automatic detection fuel cell pile air-tightness as claimed in claim 7, which is characterized in that described
Outlet connecting tube (15) is vertical with total escape pipe (4), three branch escape pipes (5) with the outlet connecting tube (15)
Vertically.
9. a kind of device of full-automatic detection fuel cell pile air-tightness as described in claim 1, which is characterized in that described
The gas stored in storage cylinder (1) is nitrogen.
10. a kind of method of full-automatic detection fuel cell pile air-tightness, it is characterised in that: application such as claim 1-9
A kind of device of described in any item full-automatic detection fuel cell pile air-tightness, specific steps are as follows:
S1. test fuel cell pile leakage: close three branch escape pipes (5) on the valve (13), open it is described always into
The valve (13) on tracheae (2) and three branch air inlet pipe (3), when pressure is stablized after preset value, closing is described total
The valve (13) in air inlet pipe (2) reads pressure value after a period of stabilisation, and calculates pressure in the period and damage
Consumption value；
S2. test fuel cell pile hydrogen chamber (8) and air chamber (10) string leakage: opening respectively on the total inlet pipe (2) and
Three on the branch escape pipe (5) being connected on the branch air inlet pipe (3) that hydrogen chamber (8) is connected and with air chamber (10)
A valve (13) closes remaining described valve (13), admission pressure is maintained preset value, is continued for some time, is passed through
The gas flowmeter (7) measures gas in the period and leaks Mean Speed；
S3. test fuel cell pile water cavity (9) and hydrogen chamber (8) string leakage: opening respectively on the total inlet pipe (2) and water
Three institutes on the branch escape pipe (5) being connected on the branch air inlet pipe (3) that chamber (9) is connected and with hydrogen chamber (8)
Valve (13) are stated, remaining described valve (13) is closed, admission pressure is maintained into preset value, is continued for some time, by described
Gas flowmeter (7) measures gas in the period and leaks Mean Speed；
S4. test fuel cell pile water cavity (9) and air chamber (10) string leakage: opening respectively on the total inlet pipe (2) and water
Three institutes on the branch escape pipe (5) being connected on the branch air inlet pipe (3) that chamber (9) is connected and with air chamber (10)
Valve (13) are stated, remaining described valve (13) is closed, admission pressure is maintained into preset value, is continued for some time, by described
Gas flowmeter (7) measures gas in the period and leaks Mean Speed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110987324A (en) * | 2019-12-27 | 2020-04-10 | 浙江锋源氢能科技有限公司 | Fuel cell air tightness testing device and testing method |
| CN110987322A (en) * | 2019-12-12 | 2020-04-10 | 中国第一汽车股份有限公司 | Fuel cell stack air tightness detection device and detection method |
| CN111129549A (en) * | 2019-12-11 | 2020-05-08 | 浙江嘉杰汽车设计有限公司 | System and method for rapidly detecting series leakage of fuel cell stack |
| CN111579173A (en) * | 2020-05-21 | 2020-08-25 | 东风汽车集团有限公司 | Automatic detection equipment and detection method for three-cavity pressure maintaining air tightness of fuel cell system |
| CN111766025A (en) * | 2020-06-05 | 2020-10-13 | 湖北德普电气股份有限公司 | Hydrogen fuel cell stack gas tightness detection device |
| CN111766029A (en) * | 2020-05-30 | 2020-10-13 | 湖北德普电气股份有限公司 | Hydrogen fuel cell stack leakage rate testing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129549A (en) * | 2019-12-11 | 2020-05-08 | 浙江嘉杰汽车设计有限公司 | System and method for rapidly detecting series leakage of fuel cell stack |
| WO2021114209A1 (en) * | 2019-12-11 | 2021-06-17 | 浙江嘉杰汽车设计有限公司 | System and method for rapidly detecting series leakage of fuel cell stack |
| CN110987322A (en) * | 2019-12-12 | 2020-04-10 | 中国第一汽车股份有限公司 | Fuel cell stack air tightness detection device and detection method |
| CN110987324A (en) * | 2019-12-27 | 2020-04-10 | 浙江锋源氢能科技有限公司 | Fuel cell air tightness testing device and testing method |
| CN113188726A (en) * | 2020-01-14 | 2021-07-30 | 上海神力科技有限公司 | Graphite bipolar plate leakage detection system and method for detecting leakage of graphite bipolar plate |
| CN113188726B (en) * | 2020-01-14 | 2023-03-03 | 上海神力科技有限公司 | Graphite bipolar plate leakage detection system and method for detecting leakage of graphite bipolar plate |
| CN111579173A (en) * | 2020-05-21 | 2020-08-25 | 东风汽车集团有限公司 | Automatic detection equipment and detection method for three-cavity pressure maintaining air tightness of fuel cell system |
| CN111766029A (en) * | 2020-05-30 | 2020-10-13 | 湖北德普电气股份有限公司 | Hydrogen fuel cell stack leakage rate testing device and method |
| CN111766025A (en) * | 2020-06-05 | 2020-10-13 | 湖北德普电气股份有限公司 | Hydrogen fuel cell stack gas tightness detection device |
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