CN102564915A - Methane storage membrane methane permeability test device and test method - Google Patents
Methane storage membrane methane permeability test device and test method Download PDFInfo
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- CN102564915A CN102564915A CN2012100039375A CN201210003937A CN102564915A CN 102564915 A CN102564915 A CN 102564915A CN 2012100039375 A CN2012100039375 A CN 2012100039375A CN 201210003937 A CN201210003937 A CN 201210003937A CN 102564915 A CN102564915 A CN 102564915A
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Abstract
A methane storage membrane permeability test device and a test method belong to the field of test instrument, and are characterized in that a way of protective gas and a protective valve are added in a test system, and the protective valve controls switches of gas with different usages in the whole test process. Test gas (1) and the protective gas (2) are connected to the protective valve (5) in parallel, the test gas (1), the protective gas (2) and power gas (3) are connected in parallel into the system, connected in series with a high-pressure chamber pin valve (6), a manometry device (7), a test cavity (8), and a low-pressure chamber pin valve (10), and then connected to the pipeline where a vacuum pump (4) and an atmospheric valve (11) are connected. When the permeability test begins, the protective valve is used to open protective gas (nitrogen) to blow, and then the device is vacuumized; when test phase achieves, the protective gas (nitrogen) is closed through the protective valve, and methane is opened to conduct the permeability test. Thus, while the whole test system tests the permeability of inflammable and explosive gas, safety and reliability of the whole test system are guaranteed.
Description
Technical field
The invention belongs to field of test instrument, relate to a kind of biogas air storage film methane permeability proving installation and method of testing.
Background technology
At present, the anaerobic digestion methane production technology has become a kind of biomass energy utilization technologies of comparative maturity, has the double benefit of the energy and environmental protection.Built a large amount of big-and-middle-sized biogas engineerings in world many countries.In big-and-middle-sized biogas engineering, as the balance aerogenesis with the means of gas, gas storage link is in occupation of playing critical role.Continuous progress along with modern fine chemistry industry science and technology; Novel membrane material is also constantly developed; And gradually because of its preferably mechanical property and superior impermeability replaced traditional high pressure tank or low pressure wet type gas storage holder, apply to biogas more and more widely and store the field.
So far, all do not formulate special properties of product standard and experimental test standard both at home and abroad to biogas air storage film.The membrane material manufacturer that some are famous such as the mehler company of Germany, agriKomp company and the domestic good environment-friendly materials Science and Technology Ltd. of think of etc. all are the company standards that adopt; But there is certain difference in the evaluating between the company standard, and this has influenced the sound development of biogas air storage membrane material to a certain extent.In each item performance index, study carefully its applied special place, membrane material needs good air-tightness, so the film material is particularly important to this index of gas permeation performance.Because the principal ingredient of biogas is a methane, and methane is again a kind of greenhouse gases, be that be necessary, practical again so formulate a kind of unified biogas air storage film methane permeability device.
Summary of the invention
In order to fill the blank of existing gas-premeable proving installation for test methane gas (flammable explosive gas); The present invention provides a kind of biogas air storage film methane permeability proving installation and method of testing; This invention can not only be measured the methane transit dose and the transmitance of biogas air storage film under the known conditions, and can measure the transit dose and the transmitance of other film material flammable explosive gas.
The technical solution adopted for the present invention to solve the technical problems is: methane is a kind of inflammable and explosive gas; And be not specifically designed to the sensor that methane detects so far; To these limiting factors; In order to reach the purpose of methane gas penetration potential test, the gas-premeable method of testing of routine is improved, increased by one tunnel protection gas (nitrogen) pipeline and protective valve as stripping gas.
A kind of biogas air storage film methane permeability proving installation is made up of test gas, blanket gas, power gas, vacuum pump, protective valve, hyperbaric chamber needle-valve, PMU, test chamber, sample, low-pressure chamber needle-valve, atmospheric valve; Test gas (1) is parallel to protective valve (5) with blanket gas (2); Be parallel in the system with power gas (3) again; Connect with hyperbaric chamber needle-valve (6), PMU (7), test chamber (8), low-pressure chamber needle-valve (10), be connected to then on vacuum pump (4) and the pipeline that atmospheric valve (11) is connected.
When gas penetration potential test beginning, utilize protective valve to open nitrogen earlier and carry out stripping, and then vacuumize, when arriving test phase, close nitrogen through protective valve, open methane gas simultaneously and carry out the gas penetration potential test; Security, reliability when so just having guaranteed whole test system test flammable explosive gas permeability.
Concrete testing procedure is following.
1. the sample of film or thin slice is tested its thickness through after the pre-service, and dry, subsequent use down in room temperature condition;
2. testing table O-ring seal place is coated with one deck vacuum grease, the 1. said sample of step is placed in the test chamber, build loam cake and fastening, test chamber is divided into low-pressure chamber and hyperbaric chamber;
3. test specification: temperature is 0 ℃～70 ℃, and humidity is 0～100%RH;
4. protective valve is placed on the nitrogen place, begins test, test macro is carried out stripping, to get rid of the foreign gas in the test macro;
5. protective valve keeps being placed on the nitrogen place, low-pressure chamber, hyperbaric chamber is vacuumized below 27kPa, and continue 3 hours, to reach the definition of GB against vacuum;
6. carry out the gas penetration potential test after vacuumizing end.Protective valve is transferred to the methane place, fill methane to the hyperbaric chamber, the gaseous tension in hyperbaric chamber is controlled at 1.0 * 10
5Pa～1.1 * 10
5Pa;
7. utilize computing machine to measure and calculate Air permenbility and transmission coefficient, test findings is with the arithmetic mean value representation of every group of sample.
The invention has the beneficial effects as follows, can test the gas-premeable of flammable explosive gas through this device.
Description of drawings
Fig. 1 is a measurement system diagram of the present invention.
1. test gases among the figure, 2. blanket gas, 3. power gas, 4. vacuum pump, 5. protective valve, 6. hyperbaric chamber needle-valve, 7. PMU, 8. test chamber, 9. sample, 10. low-pressure chamber needle-valve, 11. atmospheric valves.
Embodiment
In Fig. 1, test gas (1) is parallelly connected with blanket gas (2), by protective valve (5) switch of pilot-gas optionally, is connected to test chamber (8) through hyperbaric chamber air tube valve (6) and PMU (7) then.
1. the sample of film or thin slice is tested its thickness through after the pre-service, and dry, subsequent use down in room temperature condition;
2. testing table O-ring seal place is coated with one deck vacuum grease, said examination (9) appearance is placed on the test chamber (8), low-pressure chamber and hyperbaric chamber are separated, build loam cake and fastening; Open test gas (1), blanket gas (2) and power gas (3).
3. test condition is set: temperature (0 ℃～70 ℃) and humidity (0～100%RH);
4. protective valve (5) is placed on the nitrogen place, begins test, test macro is carried out stripping, to get rid of the foreign gas in the test macro;
5. protective valve (5) remains on the nitrogen place, and open vacuum pump (4) vacuumizes below 27kPa low-pressure chamber, hyperbaric chamber, and continues 3 hours, to reach the definition of GB against vacuum;
6. carry out the gas penetration potential test after vacuumizing end.Transfer (5) to the methane place protective valve, fill methane to the hyperbaric chamber, the gaseous tension through hyperbaric chamber needle-valve (6) and PMU (7) control hyperbaric chamber is 1.0 * 10
5Pa～1.1 * 10
5Pa;
7. the computer system data that will record according to concrete low-pressure chamber needle-valve (10) and PMU (7) utilize existing software to calculate again, will demonstrate test result automatically behind the EOT; Open atmospheric valve (11), with intrasystem gas emptying.
Claims (3)
1. biogas air storage film methane permeability proving installation and method of testing is characterized in that being made up of test gas (1), blanket gas (2), power gas (3), vacuum pump (4), protective valve (5), hyperbaric chamber needle-valve (6), PMU (7), test chamber (8), low-pressure chamber needle-valve (10), atmospheric valve (11); Test gas (1) is parallel to protective valve (5) with blanket gas (2); Be parallel in the system with power gas (3) again; Connect with hyperbaric chamber needle-valve (6), PMU (7), test chamber (8), low-pressure chamber needle-valve (10), be connected to then on vacuum pump (4) and the pipeline that atmospheric valve (11) is connected.
2. a kind of according to claim 1 biogas air storage film methane permeability proving installation; It is characterized in that when gas penetration potential test beginning; Utilize protective valve to open nitrogen earlier and carry out stripping, and then vacuumize, when arriving test phase; Close nitrogen through protective valve, open methane gas simultaneously and carry out the gas penetration potential test; Security, reliability when so just having guaranteed whole test system test flammable explosive gas permeability.
3. method of testing that adopts the said biogas air storage of claim 1 film methane permeability proving installation is characterized in that concrete testing procedure is following:
1. the sample of film or thin slice is tested its thickness through after the pre-service, and dry, subsequent use down in room temperature condition;
2. testing table O-ring seal place is coated with one deck vacuum grease, the 1. said sample of step is placed in the test chamber, build loam cake and fastening, test chamber is divided into low-pressure chamber and hyperbaric chamber;
3. test specification: temperature is 0 ℃～70 ℃, and humidity is 0～100%RH;
4. protective valve is placed on the nitrogen place, begins test, test macro is carried out stripping, to get rid of the foreign gas in the test macro;
5. protective valve keeps being placed on the nitrogen place, low-pressure chamber, hyperbaric chamber is vacuumized below 27kPa, and continue 3 hours, to reach the definition of GB against vacuum;
6. carry out the gas penetration potential test after vacuumizing end, protective valve is transferred to the methane place, fill methane to the hyperbaric chamber, the gaseous tension in hyperbaric chamber is controlled at 1.0 * 10
5Pa～1.1 * 10
5Pa;
7. utilize computing machine to measure and calculate Air permenbility and transmission coefficient, test findings is with the arithmetic mean value representation of every group of sample.
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| CN2012100039375A CN102564915A (en) | 2012-01-06 | 2012-01-06 | Methane storage membrane methane permeability test device and test method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777090A (en) * | 2015-05-08 | 2015-07-15 | 广州标际包装设备有限公司 | Oxygen permeation analysis tester |
| CN107271345A (en) * | 2017-06-15 | 2017-10-20 | 中国食品药品检定研究院 | A kind of two method combined calibrating oxygen transit dose standard films and preparation method thereof |
| CN107389498A (en) * | 2017-07-07 | 2017-11-24 | 金华职业技术学院 | A kind of method for measuring methane transmitance |
| CN107782654A (en) * | 2017-09-28 | 2018-03-09 | 合肥工业大学 | A kind of pressure differential method gas barrier property test device of automatic compensation |
| CN108344674A (en) * | 2017-01-25 | 2018-07-31 | 济南思克测试技术有限公司 | A kind of gas permeation rate Auto-Test System and method based on artificial intelligence |
| CN110174336A (en) * | 2019-05-05 | 2019-08-27 | 广东白云学院 | OTR oxygen transmission rate tester, test macro and test control method |
| CN111266015A (en) * | 2020-03-05 | 2020-06-12 | 天津工业大学 | Constant volume variable pressure method test system of gas transmittance |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777090A (en) * | 2015-05-08 | 2015-07-15 | 广州标际包装设备有限公司 | Oxygen permeation analysis tester |
| CN108344674A (en) * | 2017-01-25 | 2018-07-31 | 济南思克测试技术有限公司 | A kind of gas permeation rate Auto-Test System and method based on artificial intelligence |
| CN108344674B (en) * | 2017-01-25 | 2023-12-26 | 济南思克测试技术有限公司 | Automatic gas permeability testing system and method based on artificial intelligence |
| CN107271345A (en) * | 2017-06-15 | 2017-10-20 | 中国食品药品检定研究院 | A kind of two method combined calibrating oxygen transit dose standard films and preparation method thereof |
| CN107389498A (en) * | 2017-07-07 | 2017-11-24 | 金华职业技术学院 | A kind of method for measuring methane transmitance |
| CN107389498B (en) * | 2017-07-07 | 2024-01-12 | 金华职业技术学院 | Method for measuring methane transmittance |
| CN107782654A (en) * | 2017-09-28 | 2018-03-09 | 合肥工业大学 | A kind of pressure differential method gas barrier property test device of automatic compensation |
| CN110174336A (en) * | 2019-05-05 | 2019-08-27 | 广东白云学院 | OTR oxygen transmission rate tester, test macro and test control method |
| CN111266015A (en) * | 2020-03-05 | 2020-06-12 | 天津工业大学 | Constant volume variable pressure method test system of gas transmittance |
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Application publication date: 20120711 |