CN203657989U - Proton exchange membrane fuel cell double-pole plate leak hunting apparatus - Google Patents
Proton exchange membrane fuel cell double-pole plate leak hunting apparatus Download PDFInfo
- Publication number
- CN203657989U CN203657989U CN201320792803.6U CN201320792803U CN203657989U CN 203657989 U CN203657989 U CN 203657989U CN 201320792803 U CN201320792803 U CN 201320792803U CN 203657989 U CN203657989 U CN 203657989U
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- China
- Prior art keywords
- fuel cell
- exchange membrane
- proton exchange
- membrane fuel
- kapillary
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- Expired - Lifetime
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- 239000000446 fuel Substances 0.000 title claims abstract description 16
- 239000012528 membrane Substances 0.000 title claims abstract description 15
- 230000009977 dual effect Effects 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 abstract description 21
- 238000007789 sealing Methods 0.000 abstract description 16
- 230000000007 visual effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 22
- 238000005259 measurement Methods 0.000 description 6
- 239000002737 fuel gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a proton exchange membrane fuel cell double-pole plate leak hunting apparatus. The apparatus comprises a leak hunting apparatus main body, an air inlet pipe and an exhaust discharge pipe. The air inlet pipe is provided with a pressure gauge; the air inlet pipe is broken and is communicated by use of a capillary tube; the two sides of the capillary tube are connected in parallel with a micro differential pressure sensor; and the exhaust discharge pipe is provided with an exhaust discharge valve. The apparatus provided by the utility model has the advantages of reasonable structure, simple architecture, quite high efficiency and visual effects. Besides, the apparatus helps to rapidly and visually determine the sealing performance of a coolant circulation portion.
Description
Technical field
The utility model relates generally to pem fuel cell stack, is specifically related to a kind of dual polar plates of proton exchange membrane fuel cell leak-checking apparatus, particularly relates to the measurement mechanism of a kind of dual polar plates of proton exchange membrane fuel cell cooling medium turning part sealing.
Background technology
Dual polar plates of proton exchange membrane fuel cell plays a part transmission fuel gas, oxygenant and heat radiation in pile operational process, thereby comprise fuel gas, oxygenant and three turning parts of cooling medium, wherein fuel gas is generally hydrogen, and oxygenant is generally air, and cooling medium is generally water.Cooling medium turning part is positioned in the middle of oxygenant and fuel gas turning part, when use, need guarantee the sealing between cooling medium turning part and fuel gas, oxygenant turning part, otherwise can cause gas excessive, if hydrogen and air mix, have the danger that burning and even blast occur.The sealing of the bipolar plates cooling medium turning part that therefore, check machines is particularly important.
Measuring method is by after superimposed multi-disc bipolar plates at present, cooling medium turning part is obtained to measurement mechanism main body with seal pad sealing, after passing into certain pressure gas, cooling medium turning part seals, observe the decline situation of seal gas pressure in certain hour, concrete measuring method as shown in Figure 1, after tail valve is closed, gas admittance valve ventilation, after gaseous tension is stable, close gas admittance valve, observe manometric situation of change, due to after gas admittance valve cuts out, gaseous tension has fluctuation, in addition observe the time of pressure changing, Measuring Time is longer, thereby cause efficiency lower, each Measuring Time at least needs more than 5 minutes, efficiency is lower, and effect is not directly perceived.After gaseous tension is stablized if can measure, enter the gas flow of coolant flow part, can judge rapidly and intuitively the sealing of coolant flow part.But, because the air leakage allowing is minimum, not enough 1ml/min, there is no the equipment that can accurately measure this tiny flow quantity, by restriction device, flow being converted into pressure signal is also a kind feasible alternative method, but restriction device there is no and this tiny flow quantity can be converted into the detectable model of current micro-pressure sensor at present.Thereby limit by measuring flow and carried out the application of bipolar plates method for conducting leak test.
Summary of the invention
The purpose of this utility model is the technical matters for above-mentioned existence, proposing one can be converted into small gas flow compared with atmospheric Pressure Drop, thereby can utilize existing micro-pressure-difference transmitter to measure, and then judge fast the device of dual polar plates of proton exchange membrane fuel cell cooling medium conducting region sealing.
The purpose of this utility model is achieved through the following technical solutions:
A kind of dual polar plates of proton exchange membrane fuel cell side leakage device, comprises leak-checking apparatus main body, draft tube, tail comb, and described draft tube is provided with tensimeter, and draft tube disconnects uses kapillary UNICOM, described kapillary both sides micro-pressure sensor in parallel; Described tail comb is provided with tail raft.
Described the utility model device also comprises gas admittance valve, and described gas admittance valve is connected in parallel on kapillary both sides, to accelerate intake velocity, promotes and measures efficiency.
Described the utility model device, described both sides capillaceous are also added with filler, and described filler is the one in wire netting, plastic filler, ceramic packing, imports and exports the impact of section to reduce kapillary, improves accuracy of measurement.
Described measurement mechanism main body is for obtaining cooling medium turning part with seal pad sealing.
The utility model side leakage device is used for carrying out bipolar plates cooling medium turning part sealing propertytest, comprise: close tail valve, open gas admittance valve, after gaseous tension is stable, close gas admittance valve, observe the numerical value of micro-pressure sensor, compare with permissible level, can differentiate the sealing of bipolar plates cooling medium conducting region.
Compared to the prior art, the beneficial effects of the utility model:
The utility model apparatus structure is reasonable, simple structure, and efficiency is higher, and effect is directly perceived, can judge rapidly and intuitively the sealing of coolant flow part.
Accompanying drawing explanation
Fig. 1 is existing dual polar plates of proton exchange membrane fuel cell leak-checking apparatus.
Fig. 2 is the utility model dual polar plates of proton exchange membrane fuel cell leak-checking apparatus.
In figure, 1-leak-checking apparatus main body, 2-gas admittance valve, 3-tensimeter, 4-tail raft, 5-draft tube, 6-tail comb, 7-kapillary, 8-micro-pressure sensor.
Embodiment
By specific embodiment, the utility model is further expalined to explanation.
As shown in Figure 2, a kind of dual polar plates of proton exchange membrane fuel cell side leakage device, comprises leak-checking apparatus main body 1, draft tube 5, tail comb 6, and described measurement mechanism main body 1 is for obtaining cooling medium turning part with seal pad sealing; Described draft tube 5 is provided with tensimeter 3, and draft tube 5 disconnects with kapillary 7 UNICOMs, described kapillary 7 both sides micro-pressure sensor 8 in parallel; Described tail comb 6 is provided with tail raft 4; The utility model device also comprises gas admittance valve 2, and described gas admittance valve 2 is connected in parallel on kapillary 7 both sides.Because kapillary 7 internal diameters are very little, when gas communication, cross section sharply becomes again large after can dwindling suddenly, coefficient of shock resistance can be very large, again due to minimum capillary inner diameter, even if gas flow is very little, the gas flow rate of kapillary 7 inside also can be very high, fall thereby produce larger air resistance, can utilize existing micro-pressure-difference transmitter 8 to measure, gas admittance valve 2 can be accelerated intake velocity, promote and measure efficiency, thus the sealing of judgement bipolar plates cooling medium turning part.
Because flow velocity in kapillary 7 is very high, may cause gas inlet and outlet stable section long, the both sides of described kapillary 7 are also added with filler, and described filler is the one in wire netting, plastic filler, ceramic packing, import and export the impact of section to reduce kapillary 7, improve accuracy of measurement.
The utility model side leakage device is used for carrying out bipolar plates cooling medium turning part sealing propertytest, comprise: close tail valve, open gas admittance valve, after gaseous tension is stable, close gas admittance valve, observe the numerical value of micro-pressure sensor, compare with permissible level, can differentiate the sealing of bipolar plates cooling medium conducting region.
The utility model apparatus structure is reasonable, simple structure, and efficiency is higher, and effect is directly perceived, can judge rapidly and intuitively the sealing of coolant flow part.
Claims (4)
1. a dual polar plates of proton exchange membrane fuel cell side leakage device, it is characterized in that comprising leak-checking apparatus main body, draft tube, tail comb, described draft tube is provided with tensimeter, and draft tube disconnects uses kapillary UNICOM, described kapillary both sides micro-pressure sensor in parallel; Described tail comb is provided with tail raft.
2. dual polar plates of proton exchange membrane fuel cell side leakage device according to claim 1, characterized by further comprising gas admittance valve, and described gas admittance valve is connected in parallel on kapillary both sides, to accelerate intake velocity, promotes and measures efficiency.
3. dual polar plates of proton exchange membrane fuel cell side leakage device according to claim 1, is characterized in that described both sides capillaceous are also added with filler.
4. dual polar plates of proton exchange membrane fuel cell side leakage device according to claim 3, is characterized in that described filler is the one in wire netting, plastic filler, ceramic packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320792803.6U CN203657989U (en) | 2013-12-03 | 2013-12-03 | Proton exchange membrane fuel cell double-pole plate leak hunting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320792803.6U CN203657989U (en) | 2013-12-03 | 2013-12-03 | Proton exchange membrane fuel cell double-pole plate leak hunting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203657989U true CN203657989U (en) | 2014-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320792803.6U Expired - Lifetime CN203657989U (en) | 2013-12-03 | 2013-12-03 | Proton exchange membrane fuel cell double-pole plate leak hunting apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN203657989U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677572A (en) * | 2013-12-03 | 2015-06-03 | 宜兴市四通家电配件有限公司 | Proton exchange membrane fuel cell bipolar plate leak detection method and device |
-
2013
- 2013-12-03 CN CN201320792803.6U patent/CN203657989U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677572A (en) * | 2013-12-03 | 2015-06-03 | 宜兴市四通家电配件有限公司 | Proton exchange membrane fuel cell bipolar plate leak detection method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |
|
| CX01 | Expiry of patent term |