CN202404004U - Testing device for methane permeability of methane gas storing film - Google Patents
Testing device for methane permeability of methane gas storing film Download PDFInfo
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- CN202404004U CN202404004U CN2012200050399U CN201220005039U CN202404004U CN 202404004 U CN202404004 U CN 202404004U CN 2012200050399 U CN2012200050399 U CN 2012200050399U CN 201220005039 U CN201220005039 U CN 201220005039U CN 202404004 U CN202404004 U CN 202404004U
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Abstract
The utility model relates to a testing device for methane permeability of a methane gas storing film. The testing device is characterized in that a path of protective gas and a protecting valve are added in a testing system; gas switches for different purposes are controlled by the protecting valve during the whole testing process; and a testing gas (1) and a protective gas (2) are in parallel connection with the protecting valve (5), and then are in parallel connection with a system together with a dynamic gas (3), are serially connected with a high-pressure chamber needle valve (6), a pressure-testing device (7), a testing chamber (8) and a low-pressure chamber needle valve (10) in turn, and lastly are connected with a pipeline which is connected with a vacuum pump (4) and an emptying valve (11). When a permeability test is started, the protecting valve is utilized to open the protective gas (nitrogen) for blowing, and then vacuumizing is performed, and when a test stage is started, the protective gas (nitrogen) is closed by the protecting valve, and meanwhile methane gas is introduced and the permeability test is performed. Thus, the safety and reliability of the whole testing system during the process of testing the permeability of inflammable and explosive gas are ensured.
Description
Technical field
The utility model belongs to field of test instrument, relates to a kind of biogas air storage film methane permeability proving installation.
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 plays 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 utility model provides a kind of biogas air storage film methane permeability proving installation; This device 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 utility model solves the technical scheme that its technical matters adopted: 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.
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, said sample is placed on the said testing table, low-pressure chamber and hyperbaric chamber are separated, build loam cake and fastening;
3. test condition is set: temperature (0 ℃～70 ℃) and humidity (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. calculate Air permenbility and transmission coefficient, this device is to utilize computing machine and distinctive software to measure calculating.
Test findings is with the arithmetic mean value representation of every group of sample.
The beneficial effect of the utility model is to test the gas-premeable of flammable explosive gas through this device.
Description of drawings
Fig. 1 is the measurement system diagram of the utility model.
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 sample (9) 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 (1)
1. a biogas air storage film methane permeability proving installation 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200050399U CN202404004U (en) | 2012-01-06 | 2012-01-06 | Testing device for methane permeability of methane gas storing film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200050399U CN202404004U (en) | 2012-01-06 | 2012-01-06 | Testing device for methane permeability of methane gas storing film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202404004U true CN202404004U (en) | 2012-08-29 |
Family
ID=46701645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200050399U Expired - Fee Related CN202404004U (en) | 2012-01-06 | 2012-01-06 | Testing device for methane permeability of methane gas storing film |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564915A (en) * | 2012-01-06 | 2012-07-11 | 北京科技大学 | Methane storage membrane methane permeability test device and test method |
| CN102798586A (en) * | 2012-08-30 | 2012-11-28 | 源达日化(天津)有限公司 | Novel testing system for testing air permeability of micro air-permeable film |
-
2012
- 2012-01-06 CN CN2012200050399U patent/CN202404004U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564915A (en) * | 2012-01-06 | 2012-07-11 | 北京科技大学 | Methane storage membrane methane permeability test device and test method |
| CN102798586A (en) * | 2012-08-30 | 2012-11-28 | 源达日化(天津)有限公司 | Novel testing system for testing air permeability of micro air-permeable film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20140106 |