CN211061452U - Fuel cell membrane swelling rate measuring device - Google Patents
Fuel cell membrane swelling rate measuring device Download PDFInfo
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- CN211061452U CN211061452U CN201921760314.6U CN201921760314U CN211061452U CN 211061452 U CN211061452 U CN 211061452U CN 201921760314 U CN201921760314 U CN 201921760314U CN 211061452 U CN211061452 U CN 211061452U
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- fuel cell
- cell membrane
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- scale
- swelling rate
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Abstract
The utility model relates to a measuring device technical field, concretely relates to fuel cell membrane swelling rate measuring device. The fuel cell membrane swelling rate measuring device comprises a measuring scale with scales, a first movable sliding block and a second movable sliding block; first portable rider and the portable rider of second are transparent material, are nested on measuring the scale for rectangular through-hole through the cross section, and both structures are the same, openly are provided with protruding cambered surface, back fixedly connected with metal block. The not enough to prior art, the utility model discloses a fuel cell membrane swelling rate measuring device can with the whole constant temperature water bath device of directly arranging in of fuel cell membrane, guarantee that the membrane is even stable at the temperature of testing process to avoided the direct contact of survey crew to the fuel cell film in direct reading, improved test speed, reduced measuring error.
Description
Technical Field
The utility model relates to a measuring device technical field, concretely relates to fuel cell membrane swelling rate measuring device.
Background
Fuel cells are becoming an important direction for the development of new energy technologies due to their advantages of zero emission, high efficiency, fast start-up, noiseless operation at low temperature, etc. As the core of a fuel cell, the performance of the fuel cell membrane is critical. Fuel cell membranes are abundant in type, but currently commercialized are polymer type thin films represented by perfluorosulfonic acid resin films. In the process of developing and researching fuel cell membranes, the dimensional stability, namely the swelling ratio, of the membranes under certain humidity is often required to be tested.
Currently, the swelling ratio test of fuel cell membranes still has some drawbacks during operation: (1) when the swelling rate of the membrane is measured, the membrane needs to be taken out from a water bath kettle with higher temperature (generally 80-100 ℃) and placed on a measuring scale to read a measured value, and the larger temperature difference between the membrane and the external environment (23 +/-2 ℃) and especially a cold measuring scale can cause the contraction of the membrane measuring process, so that the measured value of the membrane swelling is smaller than the real swelling value; (2) during the measurement, a measurer directly or indirectly contacts the fuel cell membrane, so that the applied external force makes the membrane after absorbing water and swelling easier to generate dimensional change, and the measured value deviates from the true swelling value.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough of prior art, the utility model aims at providing a fuel cell membrane swelling rate measuring device, it can with the whole constant temperature water bath device of directly arranging in of fuel cell membrane, guarantee that the membrane is even stable at the temperature of testing process to avoided the direct contact of survey crew to the fuel cell film in direct reading, improved test speed, reduced measuring error.
The utility model discloses a fuel cell membrane swelling rate measuring device, including the measurement scale who has the scale, still include first portable rider and second portable rider; first portable rider and the portable rider of second are transparent material, are nested on measuring the scale for rectangular through-hole through the cross section, and both structures are the same, openly are provided with protruding cambered surface, back fixedly connected with metal block.
Two sliding codes are adopted to fix two ends of the fuel cell membrane in the measuring process, so that the fuel cell membrane is flatly spread on the measuring scale, and the measurement is convenient; transparent materials are selected for the first movable sliding block and the second movable sliding block, the front surface of the first movable sliding block and the front surface of the second movable sliding block are provided with the convex cambered surfaces, the measurement scales are amplified, direct, rapid and accurate reading can be achieved in the test process, and direct contact of a measurer with a fuel cell film is avoided; first portable side's sign indicating number and the portable back fixedly connected with metal block of second side's sign indicating number, when measuring device is located the basin, can make the position relatively fixed of two side's signs of swimming through the action of gravity of metal block, prevent that side's sign indicating number from taking place to remove in reading process, influence measuring result.
The cross section width of the through holes of the first movable sliding weight and the second movable sliding weight is 5-10 times of the thickness of the measuring scale, and the length of the cross section is 1-3mm longer than the width of the measuring scale. The cross section of the through hole is wide, enough space is reserved for the thickness increase generated by the swelling of the fuel cell membrane, and the floating crane is prevented from touching the fuel cell membrane in the moving process; the cross section length of through-hole is slightly longer than the measurement scale width, can make the position of trip code relatively fixed, has avoided the removal of trip code in the measurement process to a certain extent.
The minimum scale value of the measurement scale is 0.5 mm. The accuracy of the membrane test result is ensured.
The measuring scale is made of one of chromium stainless steel, chromium-nickel stainless steel, chromium-manganese-nitrogen stainless steel, magnesium alloy, PTFE (polytetrafluoroethylene), PPS (polyphenylene sulfide), PI (polyimide), PEEK (polyether ether ketone) and PAI (polyamide). The material used by the measuring scale is required to be high temperature resistant, corrosion resistant and low thermal expansion coefficient, so that the dimensional stability of the measuring scale is ensured when the measuring scale is heated, and the reliability of the measuring result is improved.
The first movable sliding block and the second movable sliding block are made of one of transparent toughened glass, polycarbonate and polyethylene terephthalate. The selected materials are all high-temperature-resistant and corrosion-resistant transparent materials, so that the reliability of the measurement result is ensured.
The thickness of the pipe wall of the first movable sliding weight and the second movable sliding weight is 10-15 times of the thickness of the measuring scale.
The working process of the fuel cell membrane swelling rate measuring device is as follows:
cutting the Transverse Direction (TD) of the fuel cell membrane to be measured, spreading the fuel cell membrane on a measuring scale, moving a first movable sliding weight and a second movable sliding weight to enable two ends of the membrane to be respectively positioned between the two sliding weights, and directly reading the length L of the membrane before swelling 0then the whole measuring device fixed with the film is placed in a constant temperature water bath tank at 80 ℃, the water bath tank is covered for sealing, the water bath tank is opened for 2 hours, the two running blocks are properly moved by tweezers, the whole film is kept to be laid on the measuring scale, the two ends of the film are respectively positioned in the middle of the two running blocks, and the length L of the film after the swelling is read again directly 1Then the swelling ratio in the Transverse Direction (TD) of the fuel cell membrane can be calculated from the following formula:
ΔL＝(L1-L0)/L0×100％。
Compared with the prior art, the utility model has the advantages of it is following:
(1) The whole body formed by the measuring device and the fuel cell membrane can be directly arranged in the constant-temperature water bath device, so that the temperature in the whole process of membrane testing is ensured to be uniform and stable, and the reading error caused by the change of testing temperature is reduced;
(2) The measuring device of the utility model is attached with two transparent movable vernier weights, so that the film is flatly spread on the measuring scale in the swelling ratio test process, the numerical value is directly read and the direct contact with the film is avoided, and the measurement is faster and more accurate;
(3) The utility model discloses a measuring device easy operation, result are accurate, can satisfy the fuel cell membrane swelling rate measurement of most types.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic top view of the fuel cell membrane swelling ratio testing device of the present invention;
Fig. 2 is a left side view structural schematic diagram of the fuel cell membrane swelling rate testing device of the present invention;
FIG. 3 is a diagram showing the operation state of the fuel cell membrane swelling rate testing device of the present invention;
In the figure: 1. a first movable rider; 2. a second movable run length; 3. calibration; 4. measuring a scale; 5. a metal block; 6. a through hole; 7. a convex cambered surface; 8. a fuel cell membrane.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
As shown in fig. 1-3, a fuel cell membrane swelling capacity testing device comprises a measuring scale 4 with a scale 3, a first movable sliding weight 1 and a second movable sliding weight 2; first portable loose yard 1 and the portable loose yard 2 of second are transparent material, are nested on measuring the scale for rectangular through-hole 6 through the cross section, and both structures are the same, openly are provided with protruding cambered surface 7, back fixedly connected with metal block 5.
Two sliding codes are adopted to fix two ends of the fuel cell membrane 8 in the measuring process, so that the fuel cell membrane 8 is flatly spread on the measuring scale 4, and the measurement is convenient; the first movable floating block 1 and the second movable floating block 2 are made of transparent materials, the convex cambered surfaces 7 are arranged on the front surfaces of the first movable floating block 1 and the second movable floating block 2, measurement scales are amplified, direct, fast and accurate reading can be achieved in the test process, and direct contact of a measurer on the fuel cell film 8 is avoided; the back fixedly connected with metal block 5 of first portable trip yard 1 and the portable trip yard 2 of second, when measuring device was located the basin, can make the position of two trip yards relatively fixed through the action of gravity of metal block 5, prevent that trip yard from taking place to remove at reading in-process, influencing measuring result.
The cross-sectional width of the through holes 6 of the first movable vernier 1 and the second movable vernier 2 is 5 times of the thickness of the measuring scale 4, and the cross-sectional length is 2mm longer than the width of the measuring scale 4. The cross section of the through hole 6 is wide, enough space is reserved for the thickness increase generated by swelling of the fuel cell membrane 8, and the floating crane is prevented from touching the fuel cell membrane 8 in the moving process; the cross section length of through-hole 6 is slightly longer than measuring scale 4 width, can make the position of trip code relatively fixed, has avoided the removal of trip code in the measurement process to a certain extent.
The measurement scale 4 has a minimum scale value of 0.5 mm. The accuracy of the test result is ensured.
The measuring scale 4 is made of chromium stainless steel, is high temperature resistant and corrosion resistant, has a low thermal expansion coefficient, ensures the dimensional stability of the measuring scale 4 when being heated, and increases the reliability of the measuring result.
The material of first portable fortune sign indicating number 1 and the portable fortune sign indicating number 2 of second is transparent toughened glass, and high temperature resistant anticorrosion has ensured measuring result's reliability.
The thickness of the pipe wall of the first movable spring 1 and the second movable spring 2 is 10 times the thickness of the measurement scale 4.
The working process of the fuel cell membrane swelling rate measuring device is as follows:
cutting the Transverse Direction (TD) of the fuel cell membrane 8 to be measured, spreading the fuel cell membrane on a measuring scale 4, moving a first movable sliding weight 1 and a second movable sliding weight 3 to enable two ends of the membrane to be respectively positioned between the two sliding weights, and directly reading the length L of the membrane before swelling 0then the whole measuring device fixed with the film is placed in a constant temperature water bath at 80 ℃, the water bath is covered for sealing, the water bath is opened for 2 hours, the two running blocks are properly moved by tweezers, the whole film is kept to be laid on the measuring scale 4, the two ends of the film are respectively positioned in the middle of the two running blocks, and the length L of the film after the swelling is finished is directly read again 1The fuel cell membrane 8 may have a swelling ratio in the Transverse Direction (TD) To be calculated by the following formula:
ΔL＝(L1-L0)/L0×100％。
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A fuel cell membrane swelling rate measuring device comprising a measuring scale (4) with a scale (3), characterized in that: the mobile game machine also comprises a first movable game code (1) and a second movable game code (2); first portable loose code (1) and the portable loose code of second (2) are transparent material, are nested on measuring scale (4) for rectangular through-hole (6) through the cross section, and both structures are the same, openly are provided with protruding cambered surface (7), back fixedly connected with metal block (5).
2. The fuel cell membrane swelling rate measuring device according to claim 1, wherein: the cross section width of the through holes (6) of the first movable sliding weight (1) and the second movable sliding weight (2) is 5-10 times of the thickness of the measuring scale (4), and the length of the cross section is 1-3mm longer than the width of the measuring scale (4).
3. The fuel cell membrane swelling rate measuring device according to claim 1, wherein: the measurement scale (4) has a minimum scale value of 0.5 mm.
4. The fuel cell membrane swelling rate measuring device according to claim 1 or 3, characterized in that: the material of the measuring scale (4) is one of chromium stainless steel, chromium-nickel stainless steel, chromium-manganese-nitrogen stainless steel, magnesium alloy, PTFE, PPS, PI, PEEK and PAI.
5. The fuel cell membrane swelling rate measuring device according to claim 1 or 2, characterized in that: the first movable sliding block (1) and the second movable sliding block (2) are made of one of transparent tempered glass, polycarbonate and polyethylene terephthalate.
6. The fuel cell membrane swelling rate measuring device according to claim 1 or 2, characterized in that: the thickness of the pipe wall of the first movable sliding weight (1) and the second movable sliding weight (2) is 10-15 times of the thickness of the measuring scale (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921760314.6U CN211061452U (en) | 2019-10-18 | 2019-10-18 | Fuel cell membrane swelling rate measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921760314.6U CN211061452U (en) | 2019-10-18 | 2019-10-18 | Fuel cell membrane swelling rate measuring device |
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| CN211061452U true CN211061452U (en) | 2020-07-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666801A (en) * | 2020-12-31 | 2021-04-16 | 江苏友迪电气有限公司 | Plate width detection method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666801A (en) * | 2020-12-31 | 2021-04-16 | 江苏友迪电气有限公司 | Plate width detection method and device |
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Address after: 256401 Dongyue fluorosilicone Material Industrial Park, Tangshan Town, Huantai, Zibo, Shandong Patentee after: Shandong Dongyue future hydrogen energy materials Co., Ltd Address before: 256401 Dongyue fluorosilicone Material Industrial Park, Tangshan Town, Huantai, Zibo, Shandong Patentee before: Shandong Dongyue future hydrogen energy materials Co.,Ltd. |