CN111129549A - System and method for rapidly detecting series leakage of fuel cell stack - Google Patents
System and method for rapidly detecting series leakage of fuel cell stack Download PDFInfo
- Publication number
- CN111129549A CN111129549A CN201911264872.8A CN201911264872A CN111129549A CN 111129549 A CN111129549 A CN 111129549A CN 201911264872 A CN201911264872 A CN 201911264872A CN 111129549 A CN111129549 A CN 111129549A
- Authority
- CN
- China
- Prior art keywords
- cavity
- inlet
- outlet
- hydrogen
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04664—Failure or abnormal function
- H01M8/04679—Failure or abnormal function of fuel cell stacks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention relates to a system and a method for rapidly detecting series leakage of a fuel cell stack. The detection system comprises a hydrogen cavity, a water cavity and a fuel cell pile with the air cavity, wherein the hydrogen cavity is provided with a hydrogen cavity inlet and a hydrogen cavity outlet which are mutually independent, the water cavity is provided with a water cavity inlet and a water cavity outlet which are mutually communicated, the air cavity is provided with an air cavity inlet and an air cavity outlet which are mutually communicated, the hydrogen cavity inlet, the water cavity inlet and the air cavity inlet are respectively connected with an inlet valve, the inlet valves are respectively connected with a nitrogen injection device in parallel, the hydrogen cavity outlet, the water cavity outlet and the air cavity outlet are respectively connected with an outlet valve, and pressure gauges are respectively arranged between the hydrogen cavity outlet and the outlet valve, between the water cavity outlet and the outlet valve and between the air cavity outlet and the outlet valve. The invention has the advantages that: simple structure and good detection effect.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a system and a method for rapidly detecting series leakage of a fuel cell stack.
Background
According to the operating mechanism of the hydrogen/air proton exchange membrane fuel cell, when the stack is operated, the inside of the stack is in relatively severe environments of high temperature, high pressure, humidity, acidity and the like for a long time, which can accelerate the corrosion and aging of each component inside the fuel cell, so that after the fuel cell is operated for a long time, the internal damage of the stack, including corrosion and cracking of a polar plate, membrane damage, aging and failure of a sealing ring and the like, can occur. Once similar failures occur, the hydrogen and the air are mixed and leaked in the single-side flow channel, and when the hydrogen concentration reaches a certain critical value, the danger of violent reaction and even explosion of the hydrogen can be caused under the action of the catalyst. However, after the hydrogen fuel cell stack is assembled in groups, the hydrogen fuel cell stack can not be detached and detected due to the sealing, pressing and other process requirements, many times, the internal damage of the stack occurs in the process of stack operation, so that the fault can not be detected in real time, and the fuel cell can be shut down in time.
In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent document discloses a method and a device [ CN201810607227.0] for detecting internal damage and leakage of a hydrogen fuel cell stack, which includes collecting the pressure of hydrogen and air at the outlet of the fuel cell stack, respectively, adjusting the operating state of an air compressor, and ensuring that the pressure of hydrogen inside the stack is relatively higher than the air pressure. When the hydrogen fuel cell is damaged and leaked inside the stack, hydrogen gas leaks to the air side under the action of pressure difference, and part of the hydrogen gas is discharged out of the stack from the air flow channel along with air. Then, a gas separator is additionally arranged at the air outlet of the electric pile, and the hydrogen is separated from the air by utilizing the characteristic that the density of the hydrogen is much lower than that of the air. When the air contains leaking hydrogen, the hydrogen accumulates in the upper part of the gas separator. The upper part of the gas separator is additionally provided with a hydrogen concentration sensor, and when the hydrogen concentration is higher than a set value, the sensor sends an alarm signal to enable the controller to timely close the galvanic pile, so that the aims of fault detection and safe closing are fulfilled.
Above-mentioned scheme has solved current hydrogen fuel cell detection device initial stage to a certain extent and can't accurately detect out to reveal and can't carry out real-time detection to the trouble to carry out the problem of in time shutting down to fuel cell, but this scheme still has a great deal of not enoughly, for example: only whether hydrogen leaks or not can be detected, whether the air, the hydrogen and the water cavity leak or not can not be detected, the detection method is single, and the accuracy is poor.
Disclosure of Invention
The invention aims to solve the problems and provides a system for rapidly detecting the series leakage of a fuel cell stack, which has the advantages of reasonable design, simple structure and convenience in detection.
The invention aims to solve the problems and provides a method for rapidly detecting the string leakage of the fuel cell stack, which has reasonable design and good detection effect.
In order to achieve the purpose, the invention adopts the following technical scheme: this system of short-term test fuel cell stack cluster leaks, including the hydrogen cavity that has mutual independence, the fuel cell pile of water cavity and air cavity, hydrogen cavity entry and the export of hydrogen cavity that have mutual intercommunication on the hydrogen cavity, water cavity entry and the export of water cavity that have mutual intercommunication on the water cavity, air cavity entry and the air cavity export that have mutual intercommunication on the air cavity, the hydrogen cavity entry, water cavity entry and air cavity entry are connected with the inlet valve respectively, and the inlet valve is parallelly connected with a nitrogen gas injection device respectively in parallel, the hydrogen cavity export, water cavity export and air cavity export are connected with the outlet valve respectively, and be equipped with the manometer between hydrogen cavity export and the outlet valve, between water cavity export and the outlet valve and between air cavity export and the outlet valve respectively.
In the above-mentioned system for rapidly detecting the series leakage of the fuel cell stack, the nitrogen gas injection device comprises a high-pressure nitrogen gas cylinder, and the high-pressure nitrogen gas cylinder is connected in parallel with inlet valves connected with the inlet of the hydrogen cavity, the inlet of the water cavity and the inlet of the air cavity respectively through pressure reducing valves.
In the system for rapidly detecting the series leakage of the fuel cell stack, the hydrogen cavity inlet and the hydrogen cavity outlet are respectively and correspondingly arranged on two sides of the upper end of the fuel cell stack, the water cavity inlet and the water cavity outlet are respectively and correspondingly arranged on two sides of the middle part of the fuel cell stack, and the air cavity inlet and the air cavity outlet are respectively and correspondingly arranged on two sides of the lower end of the fuel cell stack.
In the system for rapidly detecting the series leakage of the fuel cell stack, the inlet valve is divided into a first inlet valve, a second inlet valve and a third inlet valve, the first inlet valve is connected with the inlet of the hydrogen cavity, the second inlet valve is connected with the inlet of the water cavity, and the inlet of the third water cavity is connected with the inlet of the air cavity; the outlet valve is divided into a first outlet valve, a second outlet valve and a third outlet valve, the first outlet valve is connected with the outlet of the hydrogen cavity, the second outlet valve is connected with the outlet of the water cavity, and the outlet of the third water cavity is connected with the outlet of the air cavity.
In the system for rapidly detecting the leakage of the fuel cell stack, a first pressure gauge is arranged between the first outlet valve and the outlet of the hydrogen cavity, a second pressure gauge is arranged between the second outlet valve and the outlet of the water cavity, and a third pressure gauge is arranged between the outlet of the third water cavity and the outlet of the air cavity.
The system for rapidly detecting the series leakage of the fuel cell stack provides a method for rapidly detecting the series leakage of the fuel cell stack, and the method comprises the following steps:
A. opening an inlet valve connected with any one of an inlet of the hydrogen cavity, an inlet of the water cavity and an inlet of the air cavity, injecting nitrogen into any one of the hydrogen cavity, the water cavity and the air cavity through a nitrogen injection device, then closing the opened inlet valve, recording an initial value of a pressure gauge at an outlet valve connected with the cavity into which the nitrogen is injected, and recording the value of the pressure gauge again after setting time intervals; if the value is different from the initial value, the gas leakage phenomenon exists in the cavity filled with the nitrogen; if the value is the same as the initial value, executing the next step;
B. sequentially opening outlet valves connected with the rest two cavities which are not injected with nitrogen in the hydrogen cavity, the water cavity and the air cavity, recording the numerical value of a pressure gauge at the outlet valve connected with the cavity injected with nitrogen, and if the numerical value is different from the initial numerical value, the leakage phenomenon exists among the hydrogen cavity, the water cavity and the air cavity which are injected with nitrogen and the cavity connected with the opened outlet valve; if the value is the same as the initial value, opening an outlet valve connected with the cavity filled with the nitrogen, and exhausting the nitrogen in the cavity;
C. and D, repeating the steps A and B to inject nitrogen into the rest two cavities of the hydrogen cavity, the water cavity and the air cavity until the detection process of the hydrogen cavity, the water cavity and the air cavity is completed.
In the method for rapidly detecting the series leakage of the fuel cell stack, the step a specifically includes:
opening first inlet valve, letting in nitrogen gas through high-pressure nitrogen cylinder in to the hydrogen cavity, closing first inlet valve, treat the initial numerical value of record after the registration of first manometer is stable, after the interval settlement time, observe the registration value of first manometer again and contrast with initial numerical value, if there is the change in the numerical value of contrast, then judge that there is the gas leakage phenomenon for the hydrogen cavity, if contrast numerical value keeps unchangeably, carry out step B.
In the method for rapidly detecting the series leakage of the fuel cell stack, the step B specifically includes:
opening a second outlet valve, observing a first pressure representation numerical value after a set time interval, comparing the recorded numerical value with an initial numerical value, and judging that the leakage phenomenon exists between the hydrogen cavity and the water cavity if the compared numerical value changes;
if the comparison value is kept unchanged, closing the second outlet valve, opening the third outlet valve, observing the first pressure to represent the value after the interval setting time, comparing the recorded value with the initial value, if the compared value is changed, judging that a leakage phenomenon exists between the hydrogen cavity and the air cavity, if the compared value is kept unchanged, opening the first outlet valve, exhausting nitrogen in the hydrogen cavity and enabling a pressure gauge connected with the hydrogen cavity to return to zero, and executing the step C.
In the method for rapidly detecting the series leakage of the fuel cell stack, the interval setting time is 8-15 min.
In the method for rapidly detecting the string leakage of the fuel cell stack, in the step a, nitrogen gas higher than the atmospheric pressure is injected into any one of the hydrogen chamber, the water chamber and the air chamber by the nitrogen gas injection device.
Drawings
FIG. 1 is a schematic diagram of the construction of the detection system of the present invention;
FIG. 2 is a flow chart of the detection method of the present invention.
In the figure, the fuel cell stack 1, the hydrogen chamber 11, the hydrogen chamber inlet 111, the hydrogen chamber outlet 112, the water chamber 12, the water chamber inlet 121, the water chamber outlet 122, the air chamber 13, the air chamber inlet 131, the air chamber outlet 132, the inlet valve 2, the first inlet valve 21, the second inlet valve 22, the third inlet valve 23, the nitrogen gas injection device 3, the high-pressure nitrogen gas cylinder 31, the pressure reducing valve 32, the outlet valve 4, the first outlet valve 41, the second outlet valve 42, the third outlet valve 43, the pressure gauge 5, the first pressure gauge 51, the second pressure gauge 52, and the third pressure gauge 53.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the system for rapidly detecting the string leakage of the fuel cell stack comprises a fuel cell stack 1 having a hydrogen chamber 11, a water chamber 12 and an air chamber 13 which are independent from each other, the hydrogen chamber 11 has a hydrogen chamber inlet 111 and a hydrogen chamber outlet 112 which are communicated with each other, the water chamber 12 has a water chamber inlet 121 and a water chamber outlet 122 which are communicated with each other, the air chamber 13 has an air chamber inlet 131 and an air chamber outlet 132 which are communicated with each other, it is characterized in that the hydrogen cavity inlet 111, the water cavity inlet 121 and the air cavity inlet 131 are respectively connected with an inlet valve 2, and the inlet valves 2 are respectively connected in parallel with a nitrogen gas injection device 3, the hydrogen chamber outlet 112, the water chamber outlet 122 and the air chamber outlet 132 are respectively connected with the outlet valve 4, and pressure gauges 5 are respectively arranged between the hydrogen chamber outlet 112 and the outlet valve 4, between the water chamber outlet 122 and the outlet valve 4, and between the air chamber outlet 132 and the outlet valve 4. Nitrogen is injected into the hydrogen cavity inlet 111, the water cavity inlet 121 and the air cavity inlet 131 in sequence through the nitrogen injection device 3, the numerical value change of the pressure gauge 5 is observed in sequence by opening and closing the outlet valve 4, and whether the leakage between the hydrogen cavity 11, the water cavity 12 and the air cavity 13 exists or not can be detected quickly and conveniently.
The nitrogen gas injection device 3 includes a high-pressure nitrogen gas cylinder 31, and the high-pressure nitrogen gas cylinder 31 is connected in parallel to the inlet valves 2 connected to the hydrogen chamber inlet 111, the water chamber inlet 121, and the air chamber inlet 131 through the pressure reducing valves 32. The nitrogen gas can be separately controlled into the hydrogen chamber inlet 111, the water chamber inlet 121 and the air chamber inlet 131 through the inlet valve 2, respectively.
Specifically, the hydrogen chamber inlet 111 and the hydrogen chamber outlet 112 are respectively and correspondingly disposed on two sides of the upper end of the fuel cell stack 1, the water chamber inlet 121 and the water chamber outlet 122 are respectively and correspondingly disposed on two sides of the middle of the fuel cell stack 1, and the air chamber inlet 131 and the air chamber outlet 132 are respectively and correspondingly disposed on two sides of the lower end of the fuel cell stack 1.
In detail, the inlet valve 2 is divided into a first inlet valve 21, a second inlet valve 22 and a third inlet valve 23, the first inlet valve 21 is connected with the hydrogen chamber inlet 111, the second inlet valve 22 is connected with the water chamber inlet 121, and the third water chamber inlet 121 is connected with the air chamber inlet 131; the outlet valve 4 is divided into a first outlet valve 41, a second outlet valve 42, and a third outlet valve 43, and the first outlet valve 41 is connected to the hydrogen chamber outlet 112, the second outlet valve 42 is connected to the water chamber outlet 122, and the third water chamber outlet 122 is connected to the air chamber outlet 132. Because the hydrogen cavity 11, the water cavity 12 and the air cavity 13 are mutually sealed, if the corresponding outlet valve 4 is opened and the corresponding pressure gauge 5 is observed to change, the leakage between the hydrogen cavity inlet 111, the water cavity inlet 121 and the air cavity inlet 131 can be detected.
Preferably, a first pressure gauge 51 is provided between the first outlet valve 41 and the hydrogen chamber outlet 112, a second pressure gauge 52 is provided between the second outlet valve 42 and the water chamber outlet 122, and a third pressure gauge 53 is provided between the third water chamber outlet 122 and the air chamber outlet 132. Whether the leakage between the hydrogen chamber inlet 111, the water chamber inlet 121 and the air chamber inlet 131 occurs is judged by whether the indication of the pressure gauge 5 changes.
As shown in fig. 1-2, the method for rapidly detecting the fuel cell stack string leakage of the present system for rapidly detecting the fuel cell stack string leakage includes the following steps:
A. opening an inlet valve 2 connected with any one of an inlet 111 of the hydrogen cavity, an inlet 121 of the water cavity and an inlet 131 of the air cavity, injecting nitrogen into any one of the hydrogen cavity 11, the water cavity 12 and the air cavity 13 through a nitrogen injection device 3, then closing the opened inlet valve 2, recording an initial value of a pressure gauge 5 at an outlet valve 4 connected with the cavity into which the nitrogen is injected, and recording the value of the pressure gauge 5 again after setting time intervals; if the value is different from the initial value, the gas leakage phenomenon exists in the cavity filled with the nitrogen; if the value is the same as the initial value, executing the next step;
B. sequentially opening outlet valves 4 connected with the rest two cavities which are not injected with nitrogen in the hydrogen cavity 11, the water cavity 12 and the air cavity 13, and recording the value of a pressure gauge 5 at the position of the outlet valve 4 connected with the cavity injected with nitrogen, wherein if the value is different from the initial value, the cavities injected with nitrogen in the hydrogen cavity 11, the water cavity 12 and the air cavity 13 and the cavities connected with the opened outlet valves 4 have the phenomenon of leakage; if the value is the same as the initial value, opening an outlet valve 4 connected with the cavity filled with the nitrogen, and exhausting the nitrogen in the cavity;
C. and C, repeating the steps A and B to inject nitrogen into the rest two cavities of the hydrogen cavity 11, the water cavity 12 and the air cavity 13 until the hydrogen cavity 11, the water cavity 12 and the air cavity 13 all complete the detection process.
Wherein, step A specifically includes:
opening first inlet valve 21, letting in nitrogen gas through high-pressure nitrogen cylinder 31 in to hydrogen cavity 11, closing first inlet valve 21, recording initial numerical value after the registration of first manometer 51 is stable, after the interval settlement time, observe the registration of first manometer 51 again and compare with initial numerical value, if the numerical value of comparison has the change, then judge that there is the gas leakage phenomenon for hydrogen cavity 11, if the numerical value of comparison keeps unchangeable, execute step B.
Wherein, step B specifically includes:
opening the second outlet valve 42, observing the indication value of the first pressure gauge 51 after the interval of set time, comparing the recorded value with the initial value, and judging that the leakage phenomenon exists between the hydrogen cavity 11 and the water cavity 12 if the compared value changes; if the comparison value is kept unchanged, closing the second outlet valve 42, opening the third outlet valve 43, observing the value indicated by the first pressure gauge 51 after the interval setting time, comparing the recorded value with the initial value, if the comparison value is changed, judging that the leakage phenomenon exists between the hydrogen cavity 11 and the air cavity 13, if the comparison value is kept unchanged, opening the first outlet valve 41, exhausting the nitrogen in the hydrogen cavity 11, enabling the pressure gauge 5 connected with the hydrogen cavity 11 to return to zero, and executing the step C.
Specifically, the interval setting time is 8-15 min.
In detail, in step a, nitrogen gas higher than atmospheric pressure is injected into any one of the hydrogen gas chamber 11, the water chamber 12, and the air chamber 13 by the nitrogen gas injection device 3.
The method for rapidly detecting the series leakage of the fuel cell stack is further explained by the following specific steps:
s1, opening the first inlet valve 21, introducing nitrogen gas higher than atmospheric pressure into the hydrogen cavity 11 through the high-pressure nitrogen gas bottle 31, closing the first inlet valve 21, recording a numerical value X after the numerical value of the first pressure gauge 51 is stable, after waiting for 10 minutes, observing the numerical value of the first pressure gauge 51 and comparing the numerical value X with the recorded numerical value X, if the compared numerical value changes, judging that the fuel cell stack 1 has a leakage phenomenon, if the compared numerical value remains unchanged, opening the second outlet valve 42, after waiting for 10 minutes, observing the numerical value of the first pressure gauge 51, comparing the numerical value X with the recorded numerical value, if the compared numerical value changes, judging that the hydrogen cavity 11 and the water cavity 12 have a leakage phenomenon, if the compared numerical value remains unchanged, closing the second outlet valve 42, opening the third outlet valve 43, after waiting for 10 minutes, observing the numerical value of the first pressure gauge 51, and comparing with the recorded value X, if there is a change in the compared value, it is determined that there is a leakage between the hydrogen chamber 11 and the air chamber 132, and if the compared value remains unchanged, step S2 is executed.
S2, closing the third outlet valve 43, opening the first outlet valve 41, when the first pressure gauge 51 shows that the value is 0, closing the first outlet valve 41, opening the third inlet valve 23, introducing nitrogen gas higher than the atmospheric pressure into the water cavity 12 through the high-pressure nitrogen gas bottle 31, closing the third inlet valve 23, recording the value Y after the indication of the third pressure gauge 53 is stable, waiting for 10 minutes, observing the value of the third pressure gauge 53 and comparing the value with the recorded value Y, if the compared value changes, judging that the fuel cell stack 1 has a leakage phenomenon, if the compared value keeps unchanged, opening the second outlet valve 42, waiting for 10 minutes, observing the value of the third pressure gauge 53, comparing the value with the recorded value Y, and if the compared value changes, judging that the air cavity 132 and the water cavity 12 have a series leakage phenomenon, if the comparison value is kept unchanged, the second outlet valve 42 is closed, the first outlet valve 41 is opened, after 10 minutes, the third pressure gauge 53 is observed to indicate the value, the comparison is carried out with the recorded value Y, the comparison value is changed, it is judged that the leakage phenomenon exists between the air cavity 132 and the hydrogen cavity 11, the comparison value is kept unchanged, the fuel cell does not leak or leak, finally, the first outlet valve 41 is closed, the third outlet valve 43 is opened, and when the value indicated by the third pressure gauge 53 is 0, the detection process is completed.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although terms such as the fuel cell stack 1, the hydrogen chamber 11, the hydrogen chamber inlet 111, the hydrogen chamber outlet 112, the water chamber 12, the water chamber inlet 121, the water chamber outlet 122, the air chamber 13, the air chamber inlet 131, the air chamber outlet 132, the inlet valve 2, the first inlet valve 21, the second inlet valve 22, the third inlet valve 23, the nitrogen gas injection device 3, the high pressure nitrogen gas cylinder 31, the pressure reducing valve 32, the outlet valve 4, the first outlet valve 41, the second outlet valve 42, the third outlet valve 43, the pressure gauge 5, the first pressure gauge 51, the second pressure gauge 52, and the third pressure gauge 53 are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. A system for rapidly detecting the series leakage of a fuel cell stack comprises the fuel cell stack (1) with a hydrogen cavity (11), a water cavity (12) and an air cavity (13) which are mutually independent, wherein the hydrogen cavity (11) is provided with a hydrogen cavity inlet (111) and a hydrogen cavity outlet (112) which are mutually communicated, the water cavity (12) is provided with a water cavity inlet (121) and a water cavity outlet (122) which are mutually communicated, the air cavity (13) is provided with an air cavity inlet (131) and an air cavity outlet (132) which are mutually communicated, and the system is characterized in that the hydrogen cavity inlet (111), the water cavity inlet (121) and the air cavity inlet (131) are respectively connected with an inlet valve (2), the inlet valve (2) is respectively connected with a nitrogen injection device (3), the hydrogen cavity outlet (112), the water cavity outlet (122) and the air cavity outlet (132) are respectively connected with an outlet valve (4) in parallel, and pressure gauges (5) are respectively arranged between the hydrogen cavity outlet (112) and the outlet valve (4), between the water cavity outlet (122) and the outlet valve (4) and between the air cavity outlet (132) and the outlet valve (4).
2. The system for rapidly detecting the string leak of the fuel cell stack according to claim 11, wherein the nitrogen gas injection device (3) comprises a high-pressure nitrogen gas cylinder (31), and the high-pressure nitrogen gas cylinder (31) is connected in parallel with an inlet valve (2) connected with the hydrogen chamber inlet (111), the water chamber inlet (121) and the air chamber inlet (131) through a pressure reducing valve (32).
3. The system for rapidly detecting the string leakage of the fuel cell stack according to claim 12, wherein the hydrogen chamber inlet (111) and the hydrogen chamber outlet (112) are respectively and correspondingly arranged at two sides of the upper end of the fuel cell stack (1), the water chamber inlet (121) and the water chamber outlet (122) are respectively and correspondingly arranged at two sides of the middle part of the fuel cell stack (1), and the air chamber inlet (131) and the air chamber outlet (132) are respectively and correspondingly arranged at two sides of the lower end of the fuel cell stack (1).
4. The system for rapidly detecting the string leakage of the fuel cell stack according to claim 1, wherein the inlet valve (2) is divided into a first inlet valve (21), a second inlet valve (22) and a third inlet valve (23), the first inlet valve (21) is connected with the hydrogen cavity inlet (111), the second inlet valve (22) is connected with the water cavity inlet (121), and the third water cavity inlet (121) is connected with the air cavity inlet (131); the outlet valve (4) divide into first outlet valve (41), second outlet valve (42) and third outlet valve (43), just first outlet valve (41) link to each other with hydrogen chamber export (112), second outlet valve (42) link to each other with water chamber export (122), third water chamber export (122) link to each other with air chamber export (132).
5. The system for rapidly detecting the series leakage of the fuel cell stack according to claim 4, wherein a first pressure gauge (51) is arranged between the first outlet valve (41) and the hydrogen cavity outlet (112), a second pressure gauge (52) is arranged between the second outlet valve (42) and the water cavity outlet (122), and a third pressure gauge (53) is arranged between the third water cavity outlet (122) and the air cavity outlet (132).
6. A method for rapidly detecting a fuel cell stack string leak of a system for rapidly detecting a fuel cell stack string leak according to any one of claims 11 to 5, the method comprising the steps of:
A. opening an inlet valve (2) connected with any one of an inlet (111) of a hydrogen cavity, an inlet (121) of a water cavity and an inlet (131) of an air cavity, injecting nitrogen into any one of a hydrogen cavity (11), a water cavity (12) and an air cavity (13) through a nitrogen injection device (3), then closing the opened inlet valve (2), recording an initial value of a pressure gauge (5) at an outlet valve (4) connected with the cavity into which the nitrogen is injected, and recording the value of the pressure gauge (5) again after the interval is set; if the value is different from the initial value, the gas leakage phenomenon exists in the cavity filled with the nitrogen; if the value is the same as the initial value, executing the next step;
B. sequentially opening outlet valves (4) connected with the rest two cavities which are not injected with nitrogen in the hydrogen cavity (11), the water cavity (12) and the air cavity (13), recording the value of a pressure gauge (5) at the position of the outlet valve (4) connected with the cavity injected with nitrogen, and if the value is different from the initial value, the cavities injected with nitrogen in the hydrogen cavity (11), the water cavity (12) and the air cavity (13) and the cavities connected with the opened outlet valve (4) have the phenomenon of leakage; if the value is the same as the initial value, opening an outlet valve (4) connected with the cavity filled with the nitrogen, and exhausting the nitrogen in the cavity;
C. and D, repeating the steps A and B to inject nitrogen into the rest two cavities of the hydrogen cavity (11), the water cavity (12) and the air cavity (13) until the detection process of the hydrogen cavity (11), the water cavity (12) and the air cavity (13) is completed.
7. The method for rapidly detecting the fuel cell stack string leakage according to claim 6, wherein the step A specifically comprises:
open first inlet valve (21), let in nitrogen gas through high-pressure nitrogen gas bottle (31) in to hydrogen cavity (11), close first inlet valve (21), record initial value after the registration of first manometer (51) is stable, after the interval settlement time, observe the registration value of first manometer (51) again and compare with initial value, if the numerical value of comparison has the change, then judge that there is the gas leakage phenomenon for hydrogen cavity (11), if the comparison numerical value keeps unchangeable, carry out step B.
8. The method for rapidly detecting the fuel cell stack string leakage according to claim 7, wherein the step B specifically comprises:
opening a second outlet valve (42), observing the indication value of a first pressure gauge (51) after the interval setting time, comparing the recorded value with the initial value, and judging that the leakage phenomenon exists between the hydrogen cavity (11) and the water cavity (12) if the compared value changes;
if the comparison value is kept unchanged, closing the second outlet valve (42), opening the third outlet valve (43), observing the value displayed by the first pressure gauge (51) after the interval is set for time, comparing the recorded value with the initial value, judging that the leakage phenomenon exists between the hydrogen cavity (11) and the air cavity (13) if the compared value is changed, opening the first outlet valve (41) if the compared value is kept unchanged, exhausting the nitrogen in the hydrogen cavity (11) and enabling the pressure gauge (5) connected with the hydrogen cavity (11) to return to zero, and executing the step C.
9. The method for rapidly detecting the fuel cell stack string leakage according to claim 6, 7 or 8, wherein the interval setting time is 8-15 min.
10. The method for rapidly detecting the string leakage of the fuel cell stack according to claim 6, wherein in the step A, nitrogen gas higher than the atmospheric pressure is injected into any one of the hydrogen chamber (11), the water chamber (12) and the air chamber (13) by the nitrogen gas injection device (3).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911264872.8A CN111129549B (en) | 2019-12-11 | 2019-12-11 | System and method for rapidly detecting fuel cell stack serial leakage |
| PCT/CN2019/125071 WO2021114209A1 (en) | 2019-12-11 | 2019-12-13 | System and method for rapidly detecting series leakage of fuel cell stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911264872.8A CN111129549B (en) | 2019-12-11 | 2019-12-11 | System and method for rapidly detecting fuel cell stack serial leakage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111129549A true CN111129549A (en) | 2020-05-08 |
| CN111129549B CN111129549B (en) | 2023-07-21 |
Family
ID=70498448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911264872.8A Active CN111129549B (en) | 2019-12-11 | 2019-12-11 | System and method for rapidly detecting fuel cell stack serial leakage |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111129549B (en) |
| WO (1) | WO2021114209A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323466A (en) * | 2021-12-30 | 2022-04-12 | 新源动力股份有限公司 | Fuel cell bipolar plate leakage detection device and method |
| CN114597456A (en) * | 2020-12-03 | 2022-06-07 | 中国科学院大连化学物理研究所 | Safety detection device and method for electric pile system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115000456A (en) * | 2022-05-12 | 2022-09-02 | 亿创氢能源科技(张家港)有限公司 | Short-circuit test method for electric pile in fuel cell system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110081587A1 (en) * | 2009-10-06 | 2011-04-07 | Korea Institute Of Energy Research | Apparatus for Detecting Leak in Fuel Cells |
| CN104180958A (en) * | 2014-08-27 | 2014-12-03 | 上海韦宁新能源科技发展有限公司 | Device and method for testing fuel cell stack leakage rate |
| CN108120568A (en) * | 2018-01-24 | 2018-06-05 | 同济大学 | A kind of fuel cell pile air-tightness care testing device |
| CN110220654A (en) * | 2019-05-27 | 2019-09-10 | 中汽研汽车检验中心（天津）有限公司 | A kind of fuel cell air tightness test-bed |
| CN110336058A (en) * | 2019-07-26 | 2019-10-15 | 武汉众宇动力系统科技有限公司 | A kind of fuel cell pack detection method and detection device |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6492043B1 (en) * | 1998-12-23 | 2002-12-10 | Ballard Power Systems Inc. | Method and apparatus for detecting a leak within a fuel cell |
-
2019
- 2019-12-11 CN CN201911264872.8A patent/CN111129549B/en active Active
- 2019-12-13 WO PCT/CN2019/125071 patent/WO2021114209A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110081587A1 (en) * | 2009-10-06 | 2011-04-07 | Korea Institute Of Energy Research | Apparatus for Detecting Leak in Fuel Cells |
| CN104180958A (en) * | 2014-08-27 | 2014-12-03 | 上海韦宁新能源科技发展有限公司 | Device and method for testing fuel cell stack leakage rate |
| CN108120568A (en) * | 2018-01-24 | 2018-06-05 | 同济大学 | A kind of fuel cell pile air-tightness care testing device |
| CN110220654A (en) * | 2019-05-27 | 2019-09-10 | 中汽研汽车检验中心（天津）有限公司 | A kind of fuel cell air tightness test-bed |
| CN110336058A (en) * | 2019-07-26 | 2019-10-15 | 武汉众宇动力系统科技有限公司 | A kind of fuel cell pack detection method and detection device |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114597456A (en) * | 2020-12-03 | 2022-06-07 | 中国科学院大连化学物理研究所 | Safety detection device and method for electric pile system |
| CN114597456B (en) * | 2020-12-03 | 2023-11-07 | 中国科学院大连化学物理研究所 | Safety detection device and method for galvanic pile system |
| CN114323466A (en) * | 2021-12-30 | 2022-04-12 | 新源动力股份有限公司 | Fuel cell bipolar plate leakage detection device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111129549B (en) | 2023-07-21 |
| WO2021114209A1 (en) | 2021-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111129549A (en) | System and method for rapidly detecting series leakage of fuel cell stack | |
| CN207649860U (en) | A kind of dual polar plates of proton exchange membrane fuel cell air-tightness detection device | |
| KR100969065B1 (en) | Device and method for testing airtightness of fuel cell stack | |
| CN110082201B (en) | Material delayed fracture test method under high-pressure hydrogen-doped natural gas environment | |
| CN110987324A (en) | Fuel cell air tightness testing device and testing method | |
| CN111044234B (en) | System and method for detecting air tightness of polar plate and electric pile of fuel cell | |
| CN111811750A (en) | Fuel cell leakage detection device | |
| CN110849552A (en) | Membrane electrode assembly air tightness detection method and air tightness detection device | |
| CN210603771U (en) | Proton exchange membrane hydrogen fuel monocell device that leaks hunting | |
| CN116565263A (en) | Rapid detection system and method for fuel cell stack air tightness | |
| CN112763152A (en) | Air leakage detection method of inflatable product | |
| CN116007858B (en) | Gas circuit testing device, hydrogen fuel cell leakage detection method and storage medium | |
| CN110095340B (en) | Single-loading damage test method for material in high-pressure hydrogen-doped natural gas environment | |
| CN116007862A (en) | Pipeline gas tightness test system based on PEM electrolysis heap | |
| WO2023051526A1 (en) | Fuel cell and airtightness detection method thereof | |
| CN215178450U (en) | Detection apparatus for graphite bipolar plate runner crackle | |
| CN215677476U (en) | Inside and outside leakage test system of hydrogen energy battery stack | |
| CN212432449U (en) | Automatic leakage detection device for fuel cell stack | |
| US20100062290A1 (en) | Method for testing the impermeability of a fuel cell stack | |
| CN114858360A (en) | Fuel cell detection device and method | |
| CN114076661A (en) | Automatic leakage detection device and method for fuel cell stack | |
| CN218916712U (en) | Airtight detection device for fuel cell stack | |
| CN216081942U (en) | Electric pile air tightness detection system | |
| CN212252073U (en) | GIS vacuum pumping equipment system for SF6 gas filling | |
| KR100588507B1 (en) | Apparatus for checking damaged cell in the fuel cell stack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |