CN216925978U - Device for testing air tightness of iron-chromium flow battery stack - Google Patents
Device for testing air tightness of iron-chromium flow battery stack Download PDFInfo
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- CN216925978U CN216925978U CN202123291245.9U CN202123291245U CN216925978U CN 216925978 U CN216925978 U CN 216925978U CN 202123291245 U CN202123291245 U CN 202123291245U CN 216925978 U CN216925978 U CN 216925978U
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- 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
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Abstract
The utility model discloses a device for testing the air tightness of an iron-chromium flow battery stack, which comprises: the device comprises a total gas source, a positive electrode passage and a negative electrode passage, wherein the total gas source is respectively communicated with one end of the positive electrode passage and one end of the negative electrode passage, the other end of the positive electrode passage is communicated with an inlet of a cell stack, and the other end of the negative electrode passage is communicated with an outlet of the cell stack; further comprising: the air storage device comprises a first branch and a second branch, wherein the first branch is connected with the positive passage in parallel, the second branch is connected with the negative passage in parallel, the positive passage, the first branch, the negative passage and the second branch are all provided with a first pneumatic control valve, and the positive passage and the negative passage are all provided with air storage tanks. The utility model solves the problems that the air tightness test method of the flow battery stack only can roughly judge whether leakage exists or not and pressure drop, and can not measure accurate leakage amount and pressure drop value.
Description
Technical Field
The utility model relates to the technical field of air tightness tests of flow battery stacks, in particular to a device for testing air tightness of an iron-chromium flow battery stack.
Background
The main reasons for the problems are that most of the existing flow cell stacks have small power and relatively small volume, the liquid flow in the flow cell stacks is not very large, and the contact surfaces of membranes are not very large, so that the requirements on the specific leakage amount and the pressure drop value of the air tightness are not very sensitive.
The air tightness test method of the flow battery stack in the prior art is single, the test requirement cannot be met, the obtained test result can only roughly judge whether leakage and pressure drop exist, and accurate leakage amount and pressure drop value cannot be measured.
Disclosure of Invention
Aiming at the problems existing in the existing air tightness test of the flow battery stack, the purpose is to provide a device for testing the air tightness of the iron-chromium flow battery stack, and the problems that the air tightness test method of the flow battery stack can only roughly judge whether leakage exists or not and pressure drop exists or not, and accurate leakage amount and pressure drop value cannot be measured are solved.
The specific technical scheme is as follows:
an apparatus for testing airtightness of an iron-chromium flow battery stack comprises: the device comprises a total gas source, a positive electrode passage and a negative electrode passage, wherein the total gas source is respectively communicated with one end of the positive electrode passage and one end of the negative electrode passage, the other end of the positive electrode passage is communicated with an inlet of a cell stack, and the other end of the negative electrode passage is communicated with an outlet of the cell stack;
further comprising: the air storage device comprises a first branch and a second branch, wherein the first branch is connected with the positive passage in parallel, the second branch is connected with the negative passage in parallel, the positive passage, the first branch, the negative passage and the second branch are all provided with a first pneumatic control valve, and the positive passage and the negative passage are all provided with air storage tanks.
According to the device for testing the air tightness of the iron-chromium flow battery stack, the positive electrode passage and the negative electrode passage are respectively provided with the electromagnetic proportional valve, the flowmeter and the pressure gauge.
According to the device for testing the air tightness of the iron-chromium flow battery stack, the anode passage and the cathode passage are respectively provided with a second air control valve.
The device for testing the air tightness of the iron-chromium flow battery stack is characterized in that the electromagnetic proportional valve, the second air control valve, the air storage tank, the flowmeter and the pressure gauge are sequentially arranged on the anode passage and the cathode passage.
According to the device for testing the air tightness of the iron-chromium flow battery stack, the anode passage and the cathode passage are respectively provided with the third air control valve and the pressure release valve.
According to the device for testing the air tightness of the iron-chromium flow battery stack, the first branch and the second branch are provided with pressure regulating valves.
The above-mentioned iron chromium redox flow battery stack gas tightness test's device still includes wherein: and the controller is in signal connection with the first air control valves, the second air control valves, the third air control valves, the pressure regulating valves and the pressure relief valves respectively.
Compared with the prior art, the technical scheme has the positive effects that:
the utility model solves the problems that the air tightness test method of the flow battery stack only can roughly judge whether leakage exists or not and pressure drop, and can not measure accurate leakage amount and pressure drop value.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an apparatus for testing the airtightness of an iron-chromium flow battery stack according to the present invention;
in the drawings: 1. a positive electrode path; 2. a negative electrode path; 3. a first branch; 4. a second branch circuit; 5. a total gas source; 6. a cell stack; 7. a first pneumatic valve; 8. a gas storage tank; 9. an electromagnetic proportional valve; 10. a flow meter; 11. a pressure gauge; 12. a second pneumatic control valve; 13. a third pneumatic control valve; 14. a pressure relief valve; 15. a pressure regulating valve.
Detailed Description
The utility model is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Fig. 1 is a schematic overall structure diagram of an apparatus for testing the air tightness of a ferrochrome flow battery stack according to the present invention, and as shown in fig. 1, the apparatus for testing the air tightness of a ferrochrome flow battery stack according to a preferred embodiment is shown, and includes: the device comprises a total gas source 5, a positive electrode passage 1 and a negative electrode passage 2, wherein the total gas source 5 is respectively communicated with one end of the positive electrode passage 1 and one end of the negative electrode passage 2, the other end of the positive electrode passage 1 is communicated with an inlet of a battery stack 6, and the other end of the negative electrode passage 2 is communicated with an outlet of the battery stack 6.
Further, as a preferred embodiment, the device for testing the airtightness of the iron-chromium flow battery stack further comprises: the gas-operated valve comprises a first branch 3 and a second branch 4, wherein the first branch 3 is connected with a positive electrode passage 1 in parallel, the second branch 4 is connected with a negative electrode passage 2 in parallel, a first gas-operated valve 7 is arranged on each of the positive electrode passage 1, the first branch 3, the negative electrode passage 2 and the second branch 4, and gas storage tanks 8 are arranged on each of the positive electrode passage 1 and the negative electrode passage 2.
Further, as a preferred embodiment, an electromagnetic proportional valve 9, a flow meter 10 and a pressure gauge 11 are arranged on the positive electrode passage 1 and the negative electrode passage 2.
Further, as a preferred embodiment, the positive electrode passage 1 and the negative electrode passage 2 are provided with a second pneumatic control valve 12.
Further, as a preferred embodiment, the positive passage 1 and the negative passage 2 are respectively provided with an electromagnetic proportional valve 9, a second pneumatic control valve 12, an air storage tank 8, a flow meter 10 and a pressure gauge 11 in sequence.
Further, as a preferred embodiment, a third pneumatic control valve 13 and a relief valve 14 are provided on both the positive electrode passage 1 and the negative electrode passage 2.
Further, as a preferred embodiment, the first branch 3 and the second branch 4 are provided with pressure regulating valves 15.
The above are merely preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
The present invention also has the following embodiments in addition to the above:
in a further embodiment of the present invention, with continuing reference to fig. 1, the apparatus for testing the airtightness of an iron-chromium flow battery stack further includes: the controller, a plurality of first air control valves 7, a plurality of second air control valves 12, a plurality of third air control valves 13, a plurality of pressure regulating valves 15 and a plurality of pressure relief valves 14 are respectively in controller signal connection.
The external leakage testing method for the air tightness of the iron-chromium flow battery stack is described below, and is applied to the device for testing the air tightness of the iron-chromium flow battery stack, and the external leakage testing method comprises the following steps:
step A1: opening a first pneumatic control valve 7 on the anode passage 1 and a first pneumatic control valve 7 on the cathode passage 2, and closing the first pneumatic control valve 7 on the first branch 3 and the first pneumatic control valve 7 on the second branch 4;
step A2: the output air pressure of the total air source 5 is 170kpa, and the inner cavity of the cell stack 6 is inflated until the air pressures in the anode passage 1 and the cathode passage 2 are stable;
step A3: closing the first pneumatic control valve 7 on the positive passage 1 and the first pneumatic control valve 7 on the negative passage 2;
step A4: respectively reading the leakage values of the two gas storage tanks 8 through the two pressure gauges 11, wherein the two leakage values are respectively used for comparing with a leakage standard value required by the process, and if the leakage value is smaller than the leakage standard value, the leakage of the cell stack 6 is qualified; and if the leakage value is greater than or equal to the leakage standard value, the leakage of the cell stack is unqualified.
The following describes an internal leakage testing method for the air tightness of an iron-chromium flow battery stack, which is applied to the device for testing the air tightness of the iron-chromium flow battery stack, and the internal leakage testing method comprises the following steps:
step B1: opening a first air control valve 7 on the anode passage 1 and a first air control valve 4 on the second branch 4, and closing the first air control valve 7 on the first branch 3 and the first air control valve 7 on the cathode passage 2;
step B2: the total air source 5 inputs a 20kpa air source into the positive passage 1 to inflate, and the air storage tank 8 on the positive passage 1 keeps a pressure stable value of 20 kpa;
step B3: counting a gas leakage flow value in unit time by a flowmeter on the negative electrode passage 2, wherein the gas leakage flow value is used for comparing with a gas leakage standard value required by the process, and if the gas leakage flow value is smaller than the gas leakage standard value, the internal leakage of the cell stack is qualified; and if the gas leakage flow value is greater than or equal to the gas leakage standard value, the internal leakage of the cell stack is unqualified.
The utility model solves the problems that the air tightness test method of the flow battery stack only can roughly judge whether leakage exists or not and pressure drop, and can not measure accurate leakage amount and pressure drop value.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (7)
1. An apparatus for testing airtightness of an iron-chromium flow battery stack is characterized by comprising: the device comprises a total gas source, a positive electrode passage and a negative electrode passage, wherein the total gas source is respectively communicated with one end of the positive electrode passage and one end of the negative electrode passage, the other end of the positive electrode passage is communicated with an inlet of a cell stack, and the other end of the negative electrode passage is communicated with an outlet of the cell stack;
further comprising: the air storage device comprises a first branch and a second branch, wherein the first branch is connected with the positive passage in parallel, the second branch is connected with the negative passage in parallel, the positive passage, the first branch, the negative passage and the second branch are all provided with a first pneumatic control valve, and the positive passage and the negative passage are all provided with air storage tanks.
2. The device for testing the air tightness of the iron-chromium flow battery stack according to claim 1, wherein an electromagnetic proportional valve, a flowmeter and a pressure gauge are arranged on each of the positive electrode passage and the negative electrode passage.
3. The device for testing the air tightness of the iron-chromium flow battery stack according to claim 2, wherein a second air control valve is arranged on each of the anode passage and the cathode passage.
4. The device for testing the air tightness of the iron-chromium flow battery stack according to claim 3, wherein the electromagnetic proportional valve, the second pneumatic control valve, the air storage tank, the flowmeter and the pressure gauge are sequentially arranged on the positive electrode passage and the negative electrode passage.
5. The device for testing the air tightness of the iron-chromium flow battery stack according to claim 4, wherein a third air control valve and a pressure relief valve are arranged on the positive electrode passage and the negative electrode passage.
6. The device for testing the air tightness of the iron-chromium flow battery stack according to claim 5, wherein the first branch and the second branch are provided with pressure regulating valves.
7. The device for testing the airtightness of the iron-chromium flow battery stack according to claim 6, further comprising: and the controller is in signal connection with the first air control valves, the second air control valves, the third air control valves, the pressure regulating valves and the pressure relief valves respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123291245.9U CN216925978U (en) | 2021-12-24 | 2021-12-24 | Device for testing air tightness of iron-chromium flow battery stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123291245.9U CN216925978U (en) | 2021-12-24 | 2021-12-24 | Device for testing air tightness of iron-chromium flow battery stack |
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| Publication Number | Publication Date |
|---|---|
| CN216925978U true CN216925978U (en) | 2022-07-08 |
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| CN202123291245.9U Active CN216925978U (en) | 2021-12-24 | 2021-12-24 | Device for testing air tightness of iron-chromium flow battery stack |
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2021
- 2021-12-24 CN CN202123291245.9U patent/CN216925978U/en active Active
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