CN109900612B - Porous material water permeability pressure testing device - Google Patents
Porous material water permeability pressure testing device Download PDFInfo
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- CN109900612B CN109900612B CN201711305204.6A CN201711305204A CN109900612B CN 109900612 B CN109900612 B CN 109900612B CN 201711305204 A CN201711305204 A CN 201711305204A CN 109900612 B CN109900612 B CN 109900612B
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- porous material
- liquid chamber
- face
- hole
- sealing gasket
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- 239000011148 porous material Substances 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 230000035699 permeability Effects 0.000 title claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 16
- 230000002572 peristaltic effect Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A porous material water permeability pressure testing device comprises a gas injection device, a gas buffer cavity, a porous material clamp and a pressure gauge; the gas injection device and the gas buffer cavity realize the slow increase of the test pressure, and the test accuracy is improved.
Description
Technical field:
the invention relates to a water permeability pressure measuring device.
The background technology is as follows:
porous gas diffusion electrodes are widely used in fuel cells, metal-air cells. The porous electrode is operative to allow the passage of gases (e.g., oxygen, hydrogen, etc.) therethrough and to prevent leakage of electrolyte. The water permeability of the porous material is an important parameter reflecting the leakage of the electrolyte, when the water permeability is measured, one side of the porous material needs to be immersed into water or the electrolyte, the liquid pressure is gradually increased, and when the liquid drops seep out from the other side of the porous material, the liquid pressure value is the water permeability of the porous material.
Disclosure of Invention
In order to accurately measure the water permeability of a porous material, the pressure of the liquid needs to be slowly increased, and the patent of the invention provides a water permeability measuring device which pressurizes the liquid through a peristaltic pump or other devices capable of slowly injecting gas and reduces the pressure rising rate through a gas buffer cavity.
The invention solves the problems by the following technical proposal, which is as follows:
a porous material water permeability pressure testing device comprises a gas injection device, a gas buffer cavity, a porous material clamp and a pressure measuring device;
the porous material clamp comprises a closed liquid chamber and a hollow annular flat plate, wherein a through hole A is formed in the upper end face of the liquid chamber, the hollow annular flat plate is arranged above the through hole A, and the through hole A is positioned in a hollow area of the hollow annular flat plate; an annular sealing gasket is placed on the upper end face of the liquid chamber outside the through hole A, and the through hole A is positioned in a hollow area surrounded by the annular sealing gasket; the periphery of the lower surface of the porous material to be tested is in contact with the annular sealing gasket, the annular sealing gasket is in contact with the upper end face of the liquid chamber outside the through hole A, and the periphery of the upper surface of the porous material to be tested is in contact with the lower end face of the hollow annular plate outside the hollow area;
the thrust to the upper end face of the liquid chamber is exerted on the hollow annular flat plate, so that the peripheral edge of the lower surface of the porous material to be detected can be sealed with the annular sealing gasket, the annular sealing gasket and the upper end face of the liquid chamber outside the through hole A;
the lower part of the gas buffer cavity is communicated with the lower part of the liquid chamber through a pipeline; the upper part of the gas buffer cavity is connected with the gas outlet of the gas injection device through a pipeline; the upper part of the gas buffer cavity is provided with a pressure measuring device.
The testing device and the gas injection device can adopt peristaltic pumps, diaphragm pumps or gear pumps.
The testing device is characterized in that the gas buffer cavity is used for further reducing the gas pressure increasing rate
High water permeability measurement accuracy.
The testing device is characterized in that more than 3 through holes are uniformly distributed at the peripheral edge of the hollow annular flat plate, more than 3 threaded holes are correspondingly formed in the upper wall surface of the liquid chamber, and more than 3 screws respectively penetrate through the through holes and then are screwed with the corresponding threaded holes.
The testing device is provided with a transparent observation window on the lower end surface of the liquid chamber; the observation window is used for observing whether bubbles exist on the surface of the porous electrode after water or electrolyte is injected.
The testing device is characterized in that a through hole B is formed in the lower end face of the liquid chamber, a transparent material plate is arranged at the through hole B and is in airtight connection with the upper end face, the lower end face or the peripheral edges of the inner wall face of the through hole B, so that a transparent observation window is formed.
The porous material water permeability testing device can remarkably reduce the liquid pressurization rate and improve the measurement accuracy of the porous material water permeability.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used for the embodiments are briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic diagram of a porous material water permeability testing device, which comprises a gas injection device (1), a gas buffer cavity (2), a pressure measuring device (3) and a porous material clamp (4), wherein the porous material clamp (4) comprises a hollow annular flat plate (5), bolts (6), a porous material (7), an annular sealing gasket (8), a liquid chamber (9) and an observation window (10).
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is shown, however, only some, but not all embodiments of the invention are shown. All other embodiments, which can be made by a person skilled in the art without creative efforts, are included in the protection scope of the present invention based on the embodiments of the present invention.
Examples
As shown in fig. 1, after the porous material is cut into a certain size, the porous material is fixed by using a porous material clamp, and an annular sealing gasket is arranged between the porous material and the clamp to prevent liquid leakage. The inside of the jig liquid chamber was filled with water, and no bubbles on the surface of the porous material was confirmed through the observation window. The remaining air chamber volume of the gas buffer chamber was about 200mL, and a peristaltic pump was used as the gas injection device, the peristaltic pump rotating at 20rpm, at which time the pressure increase rate was about 0.1kPa/min. The porous material is observed through the liquid drop observation chamber, and when the first liquid permeates out, the pressure reading is immediately read, namely the water permeability pressure of the porous material.
Comparative example 1
After the porous material is cut into a certain size, the porous material clamp is used for fixing the material, and an annular sealing gasket is arranged between the porous material and the clamp to prevent liquid leakage. The inside of the jig liquid chamber was filled with water, and no bubbles on the surface of the porous material was confirmed through the observation window.
The gas buffer chamber volume was reduced to a remaining about 10mL of air chamber, a peristaltic pump was used as the gas injection device, and the peristaltic pump was rotated at 20rpm, at which time the pressure increase rate was about 20kPa/min. At this time, the pressure rise rate was too fast to observe the liquid permeation.
Comparative example 2
After the porous material is cut into a certain size, the porous material clamp is used for fixing the material, and an annular sealing gasket is arranged between the porous material and the clamp to prevent liquid leakage. The inside of the jig liquid chamber was filled with water, and no bubbles on the surface of the porous material was confirmed through the observation window. The gas pipeline is connected, and a centrifugal liquid pump is used as a pressurizing device, so that the pressure increasing rate is too high, the existing equipment cannot accurately measure the pressure increasing rate, and the water permeability of the porous material cannot be prepared to be measured.
Claims (6)
1. The utility model provides a porous material water permeability pressure testing arrangement which characterized in that: the device comprises a gas injection device, a gas buffer cavity, a porous material clamp and a pressure measuring device;
the porous material clamp comprises a closed liquid chamber and a hollow annular flat plate, wherein a through hole A is formed in the upper end face of the liquid chamber, the hollow annular flat plate is arranged above the through hole A, and the through hole A is positioned in a hollow area of the hollow annular flat plate; an annular sealing gasket is placed on the upper end face of the liquid chamber outside the through hole A, and the through hole A is positioned in a hollow area surrounded by the annular sealing gasket; the periphery of the lower surface of the porous material to be tested is in contact with the annular sealing gasket, the annular sealing gasket is in contact with the upper end face of the liquid chamber outside the through hole A, and the periphery of the upper surface of the porous material to be tested is in contact with the lower end face of the hollow annular plate outside the hollow area;
the thrust to the upper end face of the liquid chamber is exerted on the hollow annular flat plate, so that the peripheral edge of the lower surface of the porous material to be detected can be sealed with the annular sealing gasket, the annular sealing gasket and the upper end face of the liquid chamber outside the through hole A;
the lower part of the gas buffer cavity is communicated with the lower part of the liquid chamber through a pipeline; the upper part of the gas buffer cavity is connected with the gas outlet of the gas injection device through a pipeline; the upper part of the gas buffer cavity is provided with a pressure measuring device.
2. The apparatus as claimed in claim 1, wherein: the gas injection device may employ peristaltic pumps, diaphragm pumps or gear pumps.
3. The apparatus as claimed in claim 1, wherein: the gas buffer cavity is used for further reducing the gas pressure increasing rate and improving the water permeability pressure measuring accuracy.
4. The apparatus as claimed in claim 1, wherein: more than 3 through holes are uniformly distributed at the peripheral edge of the hollow annular flat plate, more than 3 threaded holes are correspondingly formed in the upper wall surface of the liquid chamber, and more than 3 screws respectively penetrate through the through holes and then are screwed with the corresponding threaded holes.
5. The apparatus as claimed in claim 1, wherein: a transparent observation window is arranged on the lower end surface of the liquid chamber; the observation window is used for observing whether bubbles exist on the surface of the porous electrode after water or electrolyte is injected.
6. The apparatus as set forth in claim 5, wherein: the lower end face of the liquid chamber is provided with a through hole B, a transparent material plate is arranged at the through hole B, and the transparent material plate is hermetically connected with the upper end face, the lower end face or the peripheral edge of the inner wall face of the through hole B to form a transparent observation window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711305204.6A CN109900612B (en) | 2017-12-11 | 2017-12-11 | Porous material water permeability pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711305204.6A CN109900612B (en) | 2017-12-11 | 2017-12-11 | Porous material water permeability pressure testing device |
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| Publication Number | Publication Date |
|---|---|
| CN109900612A CN109900612A (en) | 2019-06-18 |
| CN109900612B true CN109900612B (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711305204.6A Active CN109900612B (en) | 2017-12-11 | 2017-12-11 | Porous material water permeability pressure testing device |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178828A (en) * | 1994-12-21 | 1996-07-12 | Mitsubishi Materials Corp | Tester equipment for water permeability and gas permeability |
| US6196055B1 (en) * | 1999-02-16 | 2001-03-06 | Textured Coatings Of America, Inc. | Paint and surface coating air permeability demonstration and testing apparatus |
| WO2002061397A1 (en) * | 2001-01-31 | 2002-08-08 | Porous Materials, Inc. | Pore structure analysis of individual layers of multi-layered composite porous materials |
| CN1979124A (en) * | 2005-10-11 | 2007-06-13 | 米利波尔公司 | Methods and systems for integrity testing of porous materials |
| JP2009034496A (en) * | 2007-07-12 | 2009-02-19 | Momo Hisahiro | Heating element manufacturing method, sealing die, excess-water-containing exothermic composition supplier, heating element manufacturing device using them and heating element |
| CN102087195A (en) * | 2010-12-03 | 2011-06-08 | 宁波大学 | Full-automatic microfiltration membrane aperture distribution tester as well as automatic measuring method and application thereof |
| CN102353624A (en) * | 2011-07-08 | 2012-02-15 | 山东省水利科学研究院 | Plastic concrete permeability test device and its test method |
| CN202230009U (en) * | 2011-10-12 | 2012-05-23 | 上海大学 | Device for testing material permeable rate |
| CN103384819A (en) * | 2011-01-24 | 2013-11-06 | Emd密理博公司 | Accelerated mixed gas integrity testing of porous materials |
| CN103852406A (en) * | 2012-12-04 | 2014-06-11 | 中国科学院大连化学物理研究所 | Device for testing air permeability of carbon paper/diffusion layer and usage method of device |
| KR20150135013A (en) * | 2014-05-23 | 2015-12-02 | 국민대학교산학협력단 | Liquid Entry Pressure Gaging Apparatus |
| CN105158136A (en) * | 2015-07-23 | 2015-12-16 | 浙江工业大学 | Determination method and testing apparatus for permeability coefficient of cement-based material |
| CN106290114A (en) * | 2016-10-13 | 2017-01-04 | 大连理工大学 | A kind of thin film penetrates pressure test device |
| CN106644886A (en) * | 2016-12-28 | 2017-05-10 | 中国石油天然气集团公司 | Method for testing seepage performance of thermoplastic plastic mixed gas and test device thereof |
| CN207472733U (en) * | 2017-12-11 | 2018-06-08 | 中国科学院大连化学物理研究所 | A kind of permeable compression testing device of porous material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150047418A1 (en) * | 2013-02-13 | 2015-02-19 | Porous Materials, Inc. | Determination of pore structure characteristics of absorbent materials under compression |
-
2017
- 2017-12-11 CN CN201711305204.6A patent/CN109900612B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178828A (en) * | 1994-12-21 | 1996-07-12 | Mitsubishi Materials Corp | Tester equipment for water permeability and gas permeability |
| US6196055B1 (en) * | 1999-02-16 | 2001-03-06 | Textured Coatings Of America, Inc. | Paint and surface coating air permeability demonstration and testing apparatus |
| WO2002061397A1 (en) * | 2001-01-31 | 2002-08-08 | Porous Materials, Inc. | Pore structure analysis of individual layers of multi-layered composite porous materials |
| CN1979124A (en) * | 2005-10-11 | 2007-06-13 | 米利波尔公司 | Methods and systems for integrity testing of porous materials |
| JP2009034496A (en) * | 2007-07-12 | 2009-02-19 | Momo Hisahiro | Heating element manufacturing method, sealing die, excess-water-containing exothermic composition supplier, heating element manufacturing device using them and heating element |
| CN102087195A (en) * | 2010-12-03 | 2011-06-08 | 宁波大学 | Full-automatic microfiltration membrane aperture distribution tester as well as automatic measuring method and application thereof |
| CN103384819A (en) * | 2011-01-24 | 2013-11-06 | Emd密理博公司 | Accelerated mixed gas integrity testing of porous materials |
| CN102353624A (en) * | 2011-07-08 | 2012-02-15 | 山东省水利科学研究院 | Plastic concrete permeability test device and its test method |
| CN202230009U (en) * | 2011-10-12 | 2012-05-23 | 上海大学 | Device for testing material permeable rate |
| CN103852406A (en) * | 2012-12-04 | 2014-06-11 | 中国科学院大连化学物理研究所 | Device for testing air permeability of carbon paper/diffusion layer and usage method of device |
| KR20150135013A (en) * | 2014-05-23 | 2015-12-02 | 국민대학교산학협력단 | Liquid Entry Pressure Gaging Apparatus |
| CN105158136A (en) * | 2015-07-23 | 2015-12-16 | 浙江工业大学 | Determination method and testing apparatus for permeability coefficient of cement-based material |
| CN106290114A (en) * | 2016-10-13 | 2017-01-04 | 大连理工大学 | A kind of thin film penetrates pressure test device |
| CN106644886A (en) * | 2016-12-28 | 2017-05-10 | 中国石油天然气集团公司 | Method for testing seepage performance of thermoplastic plastic mixed gas and test device thereof |
| CN207472733U (en) * | 2017-12-11 | 2018-06-08 | 中国科学院大连化学物理研究所 | A kind of permeable compression testing device of porous material |
Non-Patent Citations (6)
| Title |
|---|
| Carbon nanotubes based gas diffusion layers in direct methanol fuel cells;Y. Gao 等;《Energy》;第1455-1459页 * |
| From relative gas permeability to in situ saturation measurements;Jian Liu 等;《Construction and Building Materials》;第882-890页 * |
| 内掺型有机硅防水剂对砂浆性能的影响;靳昊 等;《铁道建筑》;第89-91、95页 * |
| 利用武钢焦炉煤气提取高纯氢气的初步研究;田文中;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;第1-51页 * |
| 被动式直接甲醇燃料电池结构与性能研究;赵锋良;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;第1-117页 * |
| 阴极扩散层结构对空气自呼吸式DMFC性能的影响;高妍 等;《电源技术》;第687-690页 * |
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| CN109900612A (en) | 2019-06-18 |
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