CN214068758U - Quick detection device suitable for oxyhydrogen scurries - Google Patents
Quick detection device suitable for oxyhydrogen scurries Download PDFInfo
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- CN214068758U CN214068758U CN202022553947.9U CN202022553947U CN214068758U CN 214068758 U CN214068758 U CN 214068758U CN 202022553947 U CN202022553947 U CN 202022553947U CN 214068758 U CN214068758 U CN 214068758U
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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
Abstract
The utility model discloses a quick detection device suitable for oxyhydrogen scurry gas, including hydrogen mass flow controller, nitrogen gas mass flow controller, air mass flow controller, mix gas pitcher, CVM and patrol and examine equipment, stop valve and the electric pile that awaits measuring, its characterized in that: the device comprises a gas mixing tank, a gas inlet, a gas outlet, a nitrogen gas source and a hydrogen gas source, wherein the electric pile to be tested is connected with an air quality flow controller through a pipeline; the utility model discloses simplify detection technology, can carry out oxyhydrogen scurring gas immediately and detect, improved efficiency, strengthened fail safe nature.
Description
Technical Field
The utility model relates to a gas detection technical field is worn to the galvanic pile, specifically is a quick detection device and detection method suitable for oxyhydrogen scurry gas.
Background
The anode of the fuel cell stack is hydrogen fuel, and the cathode oxidant is mostly air. If a proton exchange membrane in the galvanic pile is damaged or a galvanic pile sealing assembly fails, hydrogen and oxygen blowby gas of the galvanic pile can be caused, and the hydrogen and oxygen blowby gas reaches the explosion limit in the operation process, so that safety accidents are easy to occur. Because the electric pile is formed by combining a plurality of single cells, the single cells can generate hydrogen and oxygen blowby gas due to the defects of raw materials or wrong operation modes in the assembly and operation stages of the electric pile, so that the normal operation of the whole electric pile is influenced.
In order to eliminate the potential safety hazard, in the prior art, the fuel cell stack blow-by gas detection method needs to detect by means of a test platform, the fuel cell stack is large in size and weight, the connection of the test platform is not easy, and the preparation work before detection is more and the consumed time is longer. The anode detection gas is a mixed gas of hydrogen and inert gas, and the cathode detection gas is compressed air. The hydrogen with lower concentration is used in the detection process, the position of a single cell with hydrogen and oxygen blowby gas can be detected and positioned more quickly, the cost can be reduced, but the hydrogen is accompanied with certain danger when being mixed with other gases, and the detection result is greatly interfered under the condition that the gas mixing effect is not ideal. Therefore, we propose a safe and efficient fast detection device.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide a quick detection device and detection method suitable for oxyhydrogen blowby gas, simplified detection technology, can carry out the oxyhydrogen blowby gas detection immediately, improved efficiency, strengthened fail safe nature, got rid of the uneven interference that brings of gas mixing, accurate control gas flow has improved the accuracy of gas mixing composition, but the serious degree of qualitative analysis monocell oxyhydrogen blowby gas can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a quick detection device suitable for oxyhydrogen scurries, includes hydrogen mass flow controller, nitrogen gas mass flow controller, air mass flow controller, mixes gas pitcher, CVM and patrols and examines equipment, stop valve and the galvanic pile that awaits measuring, its characterized in that: the electric pile that awaits measuring is connected with air mass flow controller through the pipeline, and air mass flow controller has air supply through the pipe connection, the inside of mixing the gas pitcher is provided with the baffle, and the right side of mixing the gas pitcher is provided with mixes gas pitcher air inlet, and the left side of mixing the gas pitcher is provided with mixes gas pitcher gas outlet, mixes gas pitcher gas outlet and is connected with nitrogen gas supply and hydrogen gas supply respectively through the pipeline, the electric pile that awaits measuring is connected with and mixes gas pitcher gas outlet through the pipeline, the electric pile that awaits measuring is connected with patrols and examines the pencil, and the electric pile that awaits measuring is patrolled and examined the equipment through patrolling and examining the pencil and is connected with CVM, the stop valve is connected with the electric pile that awaits measuring through the pipeline, and the electric pile that awaits measuring is provided with the hydrogen export.
Further, the baffle is arranged in the gas mixing tank from top to bottom, gas circulation is arranged between the baffles, the uniformity of hydrogen gas mixing is guaranteed through the baffle in the gas mixing tank, and interference caused by uneven gas mixing is eliminated.
Further, a detection method suitable for a rapid detection device for hydrogen and oxygen blowby gas is characterized in that: the method comprises the following specific detection steps:
the method comprises the following steps: connecting the electric pile to be detected to a rapid detection device, wherein an air source is connected with an air inlet of the electric pile to be detected through an air mass flow controller, a nitrogen source and a hydrogen source are connected with a hydrogen inlet of the electric pile to be detected through a mixed gas tank, an air outlet of the electric pile to be detected is externally connected with a stop valve, and a hydrogen outlet of the electric pile to be detected is externally connected with outdoor atmosphere;
step two: connecting CVM inspection equipment to the electric pile to be detected through an inspection wire harness, inspecting the electric pile one by one, opening an inspection detection page through a computer, and recording data;
step three: continuously introducing nitrogen and hydrogen according to the flow ratio of 9:1, keeping the surface pressure of a hydrogen outlet of the galvanic pile to be tested at 4-6kPa, and continuously introducing air at the flow of 100L/min;
step four: when the open circuit voltage of each section of the galvanic pile to be tested reaches more than 0.9V, stopping air introduction, closing an air outlet stop valve of the galvanic pile to be tested, and recording the voltage change of each section of the galvanic pile to be tested within 1 min;
step five: the position of a single cell with rapidly reduced voltage in the electric pile to be tested is the position of hydrogen and oxygen blowby gas.
Compared with the prior art, the beneficial effects of the utility model are that: this quick detection device suitable for oxyhydrogen blowby gas has following benefit:
1. the utility model discloses on set up the gas pitcher that mixes, through the baffle of the inside of gas pitcher that mixes, guaranteed the homogeneity that hydrogen mixes the gas, got rid of the interference that the gas that mixes is uneven to be brought.
2. The utility model discloses on set up hydrogen mass flow controller and nitrogen gas mass flow controller, can accurate control gas flow through hydrogen mass flow controller and nitrogen gas mass flow controller, improved the accuracy of thoughtlessly gas composition, but the severity of qualitative analysis monocell oxyhydrogen blowby gas.
3. The utility model discloses simplify detection technology, can carry out oxyhydrogen scurring gas immediately and detect, improved efficiency, strengthened fail safe nature.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the gas-mixing tank of the present invention;
FIG. 3 is a voltage detection diagram of a 30-section fuel cell stack according to the present invention;
fig. 4 is a voltage detection diagram of the 220-saving fuel cell stack of the present invention.
In the figure: the device comprises an air source 1, a nitrogen source 2, a hydrogen source 3, a hydrogen mass flow controller 4, a nitrogen mass flow controller 5, a mixed gas tank 6, a hydrogen outlet 7, a stop valve 8, a galvanic pile to be tested 9, a routing inspection harness 10, CVM routing inspection equipment 11, an air mass flow controller 12, a mixed gas tank inlet 13, a baffle 14 and a mixed gas tank outlet 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a quick detection device suitable for oxyhydrogen scurries, includes hydrogen mass flow controller 4, nitrogen gas mass flow controller 5, air mass flow controller 12, mixes gas pitcher 6, CVM and patrols and examines equipment 11, stop valve 8 and the electric pile 9 that awaits measuring, its characterized in that: the electric pile 9 to be tested is connected with an air quality flow controller 12 through a pipeline, the air quality flow controller 12 is connected with an air source 1 through a pipeline, a baffle 14 is arranged in a gas mixing tank 6, the baffle 14 is arranged in the gas mixing tank 6 up and down, gas circulation is arranged between the baffles 14, the uniformity of mixed gas of hydrogen is ensured through the baffle 14 in the gas mixing tank 6, the interference caused by uneven mixed gas is eliminated, a gas mixing tank inlet 13 is arranged on the right side of the gas mixing tank 6, a gas mixing tank outlet 15 is arranged on the left side of the gas mixing tank 6, the gas mixing tank outlet 15 is respectively connected with a nitrogen source 2 and a hydrogen source 3 through pipelines, the electric pile 9 to be tested is connected with a gas mixing tank outlet 15 through a pipeline, the electric pile 9 to be tested is connected with a routing inspection harness 10, and the electric pile 9 to be tested is connected with a CVM device 11 through the routing inspection harness 10, the stop valve 8 is connected with the electric pile to be tested 9 through a pipeline, and the electric pile to be tested 9 is provided with a hydrogen outlet 7.
Further, a detection method suitable for a rapid detection device for hydrogen and oxygen blowby gas is characterized in that: the method comprises the following specific detection steps:
the method comprises the following steps: connecting 30 newly assembled electric piles to be tested 9 to a rapid detection device, connecting an air source 1 with an air inlet of the electric pile to be tested 9 through an air mass flow controller 12, connecting a nitrogen source 2 and a hydrogen source 3 with a hydrogen inlet of the electric pile to be tested 9 through a gas mixing tank 6, connecting an air outlet of the electric pile to be tested 9 with a stop valve 8 externally, and connecting a hydrogen outlet 7 of the electric pile to be tested 9 with outdoor atmosphere externally;
step two: connecting CVM inspection equipment 11 to the electric pile 9 to be detected through an inspection wiring harness 10, inspecting one by one, opening an inspection detection page through a computer, and recording data;
step three: continuously introducing nitrogen and hydrogen according to the flow ratio of 9:1, keeping the surface pressure of a hydrogen outlet 7 of the galvanic pile 9 to be tested at 5kPa, and continuously introducing air at the flow of 100L/min;
step four: when the open-circuit voltage of each section of the electric pile 9 to be tested reaches more than 0.9V, stopping air introduction, closing an air outlet stop valve 8 of the electric pile 9 to be tested, and recording the voltage change of each section of the electric pile 9 to be tested within 1 min;
step five: the single cell position where the voltage in the to-be-measured cell stack 9 rapidly drops is the position of oxyhydrogen blowby gas, and the 14/15 th section has oxyhydrogen blowby gas, as shown in fig. 3.
Example two
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a quick detection device suitable for oxyhydrogen scurries, includes hydrogen mass flow controller 4, nitrogen gas mass flow controller 5, air mass flow controller 12, mixes gas pitcher 6, CVM and patrols and examines equipment 11, stop valve 8 and the electric pile 9 that awaits measuring, its characterized in that: the electric pile 9 to be tested is connected with an air quality flow controller 12 through a pipeline, the air quality flow controller 12 is connected with an air source 1 through a pipeline, a baffle 14 is arranged in a gas mixing tank 6, the baffle 14 is arranged in the gas mixing tank 6 up and down, gas circulation is arranged between the baffles 14, the uniformity of mixed gas of hydrogen is ensured through the baffle 14 in the gas mixing tank 6, the interference caused by uneven mixed gas is eliminated, a gas mixing tank inlet 13 is arranged on the right side of the gas mixing tank 6, a gas mixing tank outlet 15 is arranged on the left side of the gas mixing tank 6, the gas mixing tank outlet 15 is respectively connected with a nitrogen source 2 and a hydrogen source 3 through pipelines, the electric pile 9 to be tested is connected with a gas mixing tank outlet 15 through a pipeline, the electric pile 9 to be tested is connected with a routing inspection harness 10, and the electric pile 9 to be tested is connected with a CVM device 11 through the routing inspection harness 10, the stop valve 8 is connected with the electric pile to be tested 9 through a pipeline, and the electric pile to be tested 9 is provided with a hydrogen outlet 7.
Further, a detection method suitable for a rapid detection device for hydrogen and oxygen blowby gas is characterized in that: the method comprises the following specific detection steps:
the method comprises the following steps: connecting a newly assembled 220-section electric pile to be tested 9 to a rapid detection device, connecting an air source 1 with an air inlet of the electric pile to be tested 9 through an air mass flow controller 12, connecting a nitrogen source 2 and a hydrogen source 3 with a hydrogen inlet of the electric pile to be tested 9 through a gas mixing tank 6, connecting an air outlet of the electric pile to be tested 9 with a stop valve 8 externally, and connecting a hydrogen outlet 7 of the electric pile to be tested 9 with outdoor atmosphere externally;
step two: connecting CVM inspection equipment 11 to the electric pile 9 to be detected through an inspection wiring harness 10, inspecting one by one, opening an inspection detection page through a computer, and recording data;
step three: continuously introducing nitrogen and hydrogen according to the flow ratio of 9:1, keeping the gage pressure at a hydrogen outlet 7 of the to-be-tested electric pile 9 at 6kPa, and continuously introducing air at the flow of 700L/min;
step four: when the open-circuit voltage of each section of the electric pile 9 to be tested reaches more than 0.9V, stopping air introduction, closing an air outlet stop valve 8 of the electric pile 9 to be tested, and recording the voltage change of each section of the electric pile 9 to be tested within 1 min;
step five: the single cell position where the voltage in the to-be-measured cell stack 9 rapidly drops is the position of oxyhydrogen blowby gas, and the 9/13/167 th section has oxyhydrogen blowby gas, as shown in fig. 4.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a quick detection device suitable for oxyhydrogen scurries, includes hydrogen mass flow controller (4), nitrogen gas mass flow controller (5), air mass flow controller (12), mixes gas pitcher (6), CVM and patrols and examines equipment (11), stop valve (8) and the galvanic pile (9) that await measuring, its characterized in that: the electric pile (9) to be tested is connected with an air quality flow controller (12) through a pipeline, the air quality flow controller (12) is connected with an air source (1) through a pipeline, a baffle (14) is arranged in the mixed gas tank (6), a mixed gas tank air inlet (13) is arranged on the right side of the mixed gas tank (6), a mixed gas tank air outlet (15) is arranged on the left side of the mixed gas tank (6), the mixed gas tank air outlet (15) is respectively connected with a nitrogen gas source (2) and a hydrogen gas source (3) through pipelines, the electric pile (9) to be tested is connected with the mixed gas tank air outlet (15) through a pipeline, the electric pile (9) to be tested is connected with a routing inspection harness (10), the electric pile (9) to be tested is connected with CVM routing inspection equipment (11) through the routing inspection harness (10), and the stop valve (8) is connected with the electric pile (9) to be tested through a pipeline, the electric pile (9) to be tested is provided with a hydrogen outlet (7).
2. The device for rapidly detecting hydrogen and oxygen blowby gas as claimed in claim 1, wherein: the baffles (14) are arranged in the gas mixing tank (6) up and down, and gas circulation is arranged between the baffles (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022553947.9U CN214068758U (en) | 2020-11-08 | 2020-11-08 | Quick detection device suitable for oxyhydrogen scurries |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022553947.9U CN214068758U (en) | 2020-11-08 | 2020-11-08 | Quick detection device suitable for oxyhydrogen scurries |
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| Publication Number | Publication Date |
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| CN214068758U true CN214068758U (en) | 2021-08-27 |
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| CN202022553947.9U Active CN214068758U (en) | 2020-11-08 | 2020-11-08 | Quick detection device suitable for oxyhydrogen scurries |
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