CN101509823A - Hollow container ventilation property test device using pressure differential method - Google Patents
Hollow container ventilation property test device using pressure differential method Download PDFInfo
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- CN101509823A CN101509823A CNA2009100141263A CN200910014126A CN101509823A CN 101509823 A CN101509823 A CN 101509823A CN A2009100141263 A CNA2009100141263 A CN A2009100141263A CN 200910014126 A CN200910014126 A CN 200910014126A CN 101509823 A CN101509823 A CN 101509823A
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Abstract
The invention discloses a hollow container air permeability testing device using a differential-pressure method. The testing device is clear in principle, accurate in testing, low in manufacture cost and simple in structure, and can conveniently realize the air permeability performance detection of the hollow container by using the differential-pressure method. The structure is as follows: the testing device includes a vacuum-pumping device which is communicated with the hollow container through sealing equipment and a permeation cavity supporting plate, the hollow container is internally provided with filler and the vacuum-pumping device is also connected with a detection device.
Description
Technical field
The present invention relates to a kind of hollow container ventilation property test device that uses pressure differential method.
Background technology
The gas penetration potential of hollow container integral body can only realize by equal-pressure method before detecting.The gaseous tension of sample both sides equates in equal-pressure method, and the hollow container wall is passed through in the testing gas concentration difference infiltration that test gas relies on the sample both sides to exist.Yet to control the testing gas concentration difference of sample both sides accurately and efficiently during the test of underway electrical condenser overall air permeability and be not easy, especially when hollow container profile more complicated the time, more can bring influence to the accuracy of test data.Pressure differential method is the basic methods during the film gas penetration potential detects, when detecting, need vacuumize to the utmost point low-pressure to the space (infiltration chamber low-pressure side) of sample one side, and keep the test gas of certain pressure, so carrying out to add filter paper to support sample in infiltration chamber low-pressure side when film detects at sample opposite side (infiltration high-pressure side, chamber).But owing to lack the effective support method, hollow container can be damaged under the pressure differential effect, causes test to carry out after sample becomes hollow container.As seen, pressure differential is to cause using pressure differential method to carry out the main reason of hollow container gas penetration potential test to the destruction of hollow container.
Summary of the invention
Purpose of the present invention is exactly to detect the problem that exists in the hollow container gas penetration potential technology in order to solve above-mentioned use pressure differential method, a kind of hollow container ventilation property test device that uses pressure differential method is provided, it can effectively offset in penetration testing pressure differential to the destruction of hollow container, and can remedy the defective of using equal-pressure method to detect the hollow container gas penetration potential.
For achieving the above object, the present invention adopts following technical proposals:
A kind of hollow container ventilation property test device that uses pressure differential method, it comprises vacuum extractor, and this device is communicated with hollow container by packoff and infiltration chamber supporting plate, is provided with filling material in the hollow container, and vacuum extractor also is communicated with pick-up unit.
Described vacuum extractor comprises vacuum pump, and it is connected with the pressure transducer connecting line by the pipeline that has infiltration chamber low-pressure side stop valve, and pressure transducer connecting line one end is connected with pick-up unit, and the other end then is communicated with hollow container.
Described packoff is the hollow container sealing part, and hollow container is fixed together by hollow container sealing part and infiltration chamber supporting plate.
Described hollow container outside is provided with the test gas cover, and both all are fixed together with infiltration chamber supporting plate, and the test gas cover is communicated with compressed air source unit, and the test gas cover also is communicated with vacuum extractor.
Described compressed air source unit comprises source of the gas, it and the test gas pipeline connection that has gas filling valve, and the test gas pipeline is divided into two branch roads, and a branch road is communicated with the test gas cover, and another branch road is provided with infiltration high-pressure side, chamber stop valve and is communicated with vacuum extractor.
Described pick-up unit is a pressure transducer.
The hollow container ventilation property test device of use pressure differential method of the present invention, it comprises infiltration chamber, vacuum pump, pressure transducer, valve and pipeline etc.Described infiltration chamber comprises hollow container, filling material, hollow container sealing part, several parts of infiltration chamber supporting plate.In hollow container, add earlier filling material, by the hollow container sealing part hollow container and infiltration chamber supporting plate are fixed together again, hollow container inside, infiltration chamber supporting plate, and the pressure transducer connecting line form infiltration chamber low-pressure side, hollow container is outside to be infiltration high-pressure side, chamber.When beginning to test infiltration chamber low-pressure side is vacuumized, infiltration chamber low-pressure side stop valve is opened, and vacuum pump is opened.After vacuumizing end, vacuum pump cuts out, and infiltration chamber low-pressure side stop valve is closed.Infiltration high-pressure side, chamber is the test gas of certain pressure, making that hollow container is inside and outside forms certain pressure differential, under action of pressure, test gas penetrates in the hollow container by the hollow container wall, pressure in the pressure sensor monitoring hollow container changes, and calculates the gas penetration potential of hollow container by the ascending amount of unit interval internal pressure.Described filling material can be made with any materials low to gas adsorbability, that do not occur being out of shape when there is test pressure reduction in filling outside within it after full in hollow container.Fixing between described hollow container and the infiltration chamber pallet can use fluid sealant etc. to satisfy the any-mode that vacuum seal requires.
The present invention also has another kind of structure, promptly uses the hollow container ventilation property test device of pressure differential method to comprise several parts such as infiltration chamber (comprising test gas cover, hollow container, filling material, hollow container sealing part, several parts of infiltration chamber supporting plate), vacuum pump, pressure transducer, source of the gas, valve and pipeline among the present invention.In hollow container, add earlier filling material, by the hollow container sealing part hollow container and infiltration chamber supporting plate are fixed together again, by hollow container inside, infiltration chamber supporting plate, and the pressure transducer connecting line forms and permeates the chamber low-pressure side, then at the outside test gas cover that increases of hollow container, by test gas cover and the outside infiltration high-pressure side, chamber that forms of hollow container.When beginning to test (infiltration chamber low-pressure side and infiltration high-pressure side, chamber) inside and outside the hollow container vacuumized, this moment, gas filling valve was closed, and infiltration chamber low-pressure side stop valve, infiltration high-pressure side, chamber stop valve are opened, and vacuum pump is opened.After vacuumizing end, vacuum pump cuts out, infiltration chamber low-pressure side stop valve, infiltration high-pressure side, chamber stop valve are all closed, gas filling valve is opened, and source of the gas begins to charge into test gas to infiltration high-pressure side, chamber, makes that hollow container is inside and outside to form certain pressure differential, under action of pressure, test gas penetrates in the hollow container by the hollow container wall, and the pressure in the pressure sensor monitoring hollow container changes, and calculates the gas penetration potential of hollow container by the ascending amount of unit interval internal pressure.Filling material can be made with any materials low to gas adsorbability, that do not occur being out of shape when there is test pressure reduction in filling outside within it after full in hollow container.Fixing between hollow container, test gas cover and the infiltration chamber pallet can use fluid sealant etc. to satisfy the any-mode that vacuum seal requires.
Advantage of the present invention is:
1. realize utilizing pressure differential method to detect the hollow container gas penetration potential, can effectively remedy the defective in the equal-pressure method hollow container gas penetration potential method of testing.
2. principle is clear, simple in structure.
Description of drawings:
Fig. 1 is a structural drawing of the present invention;
Fig. 2 is another embodiment of the present invention structural drawing.
Wherein, 1. filling material; 2. hollow container; 3. hollow container sealing part; 4. permeate the chamber supporting plate; 5. permeate chamber low-pressure side stop valve; 6. vacuum pump; 7. pressure transducer; 8. pressure transducer connecting line; 9. permeate high-pressure side, chamber stop valve; 10. gas filling valve; 11. source of the gas; 12. test gas cover.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Embodiment 1:
Among Fig. 1, the present invention includes several parts such as infiltration chamber (comprising hollow container 2, filling material 1, hollow container sealing part 3, infiltration chamber supporting plate more than 4 parts), vacuum pump 6, pressure transducer 7, valve and pipeline.
In hollow container 2, add filling material 1 earlier, by hollow container sealing part 3 hollow container 2 and infiltration chamber supporting plate 4 are fixed together again, hollow container 2 inside, infiltration chamber supporting plate 4, and pressure transducer connecting line 8 form infiltration chamber low-pressure sides, hollow container 2 is outside to be infiltration high-pressure side, chamber.When beginning to test infiltration chamber low-pressure side is vacuumized, infiltration chamber low-pressure side stop valve 5 is opened, and vacuum pump 6 is opened.After vacuumizing end, vacuum pump 6 cuts out, and infiltration chamber low-pressure side stop valve 5 is closed.Infiltration high-pressure side, chamber is the test gas of certain pressure, making that hollow container 2 is inside and outside forms certain pressure differential, under action of pressure, test gas penetrates in the hollow container 2 by the hollow container wall, pressure in the pressure transducer 7 monitoring hollow containers 2 changes, and calculates the gas penetration potential of hollow container 2 by the ascending amount of unit interval internal pressure.Filling material 1 can be made with any materials low to gas adsorbability, that do not occur being out of shape when there is test pressure reduction in filling outside within it after full in hollow container 2.Fixing between hollow container 2 and the infiltration chamber pallet 4 can use fluid sealant etc. to satisfy the any-mode that vacuum seal requires.
Embodiment 2:
Among Fig. 2, the present invention includes several parts such as infiltration chamber (comprising test gas cover 12, hollow container 2, filling material 1, hollow container sealing part 3, infiltration chamber supporting plate more than 4 parts), vacuum pump 6, pressure transducer 7, source of the gas 11, valve and pipeline.
In hollow container 2, add filling material 1 earlier, by hollow container sealing part 3 hollow container 2 and infiltration chamber supporting plate 4 are fixed together again, by hollow container inside, infiltration chamber supporting plate 4, and pressure transducer connecting line 8 forms and permeates the chamber low-pressure side, then at the hollow container 2 outside test gas covers 12 that increase, by test gas cover 12 and the outside infiltration high-pressure side, chamber that forms of hollow container.When beginning to test hollow container 2 inside and outside (infiltration chamber low-pressure side and infiltration high-pressure side, chamber) is vacuumized, this moment, gas filling valve 10 was closed, and infiltration chamber low-pressure side stop valve 5, infiltration high-pressure side, chamber stop valve 9 are opened, and vacuum pump 6 is opened.After vacuumizing end, vacuum pump 6 cuts out, infiltration chamber low-pressure side stop valve 5, infiltration high-pressure side, chamber stop valve 9 are all closed, gas filling valve 10 is opened, source of the gas 11 beginnings charge into test gas to infiltration high-pressure side, chamber, making that hollow container 2 is inside and outside forms certain pressure differential, under action of pressure, test gas penetrates in the hollow container 2 by the hollow container wall, pressure in the pressure transducer 7 monitoring hollow containers 2 changes, and calculates the gas penetration potential of hollow container 2 by the ascending amount of unit interval internal pressure.Filling material 1 can be made with any materials low to gas adsorbability, that do not occur being out of shape when there is test pressure reduction in filling outside within it after full in hollow container 2.Fixing between hollow container 2, test gas cover 12 and the infiltration chamber pallet 4 can use fluid sealant etc. to satisfy the any-mode that vacuum seal requires.
Claims (6)
1. hollow container ventilation property test device that uses pressure differential method, it is characterized in that it comprises vacuum extractor, this device is communicated with hollow container by packoff and infiltration chamber supporting plate, be provided with filling material in the hollow container, vacuum extractor also is connected with pick-up unit.
2. the hollow container ventilation property test device of use pressure differential method as claimed in claim 1, it is characterized in that, described vacuum extractor comprises vacuum pump, it is connected with the pressure transducer connecting line by the pipeline that has infiltration chamber low-pressure side stop valve, pressure transducer connecting line one end is connected with pick-up unit, and the other end then is communicated with hollow container.
3. the hollow container ventilation property test device of use pressure differential method as claimed in claim 1 is characterized in that, described packoff is the hollow container sealing part, and hollow container is fixed together by hollow container sealing part and infiltration chamber supporting plate.
4. the hollow container ventilation property test device of use pressure differential method as claimed in claim 1, it is characterized in that described hollow container outside is provided with the test gas cover, both all are fixed together with infiltration chamber supporting plate, the test gas cover is communicated with compressed air source unit, and the test gas cover also is communicated with vacuum extractor.
5. the hollow container ventilation property test device of use pressure differential method as claimed in claim 4, it is characterized in that, described compressed air source unit comprises source of the gas, it and the test gas pipeline connection that has gas filling valve, the test gas pipeline is divided into two branch roads, a branch road is communicated with the test gas cover, and another branch road is provided with infiltration high-pressure side, chamber stop valve and is communicated with vacuum extractor.
6. the hollow container ventilation property test device of use pressure differential method as claimed in claim 1 or 2 is characterized in that, described pick-up unit is a pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100141263A CN101509823B (en) | 2009-02-06 | 2009-02-06 | Hollow container ventilation property test device using pressure differential method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100141263A CN101509823B (en) | 2009-02-06 | 2009-02-06 | Hollow container ventilation property test device using pressure differential method |
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| CN101509823A true CN101509823A (en) | 2009-08-19 |
| CN101509823B CN101509823B (en) | 2010-10-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798507A (en) * | 2012-07-06 | 2012-11-28 | 中国石油大学(华东) | Testing device and testing method for tightness of underground salt cavern gas storage |
| CN103885475A (en) * | 2012-12-22 | 2014-06-25 | 晨迅科技有限公司 | Temperature regulation method by increasing gas density |
| CN107167307A (en) * | 2017-06-07 | 2017-09-15 | 远东电缆有限公司 | Pyrocondensation sealing cap method for testing air permeability and special test equipment |
| CN108489854A (en) * | 2018-05-28 | 2018-09-04 | 广东省特种设备检测研究院 | Low-temperature (low temperature) vessel vacuumizes resistance performance test device and test method with multilayer insulant |
-
2009
- 2009-02-06 CN CN2009100141263A patent/CN101509823B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798507A (en) * | 2012-07-06 | 2012-11-28 | 中国石油大学(华东) | Testing device and testing method for tightness of underground salt cavern gas storage |
| CN102798507B (en) * | 2012-07-06 | 2015-05-13 | 中国石油大学(华东) | Testing device and testing method for tightness of underground salt cavern gas storage |
| CN103885475A (en) * | 2012-12-22 | 2014-06-25 | 晨迅科技有限公司 | Temperature regulation method by increasing gas density |
| CN103885475B (en) * | 2012-12-22 | 2016-12-28 | 晨迅科技有限公司 | Temperature regulation method by increasing gas density |
| CN107167307A (en) * | 2017-06-07 | 2017-09-15 | 远东电缆有限公司 | Pyrocondensation sealing cap method for testing air permeability and special test equipment |
| CN107167307B (en) * | 2017-06-07 | 2024-01-30 | 远东电缆有限公司 | Method and special equipment for testing air permeability of heat-shrinkable sealing cap |
| CN108489854A (en) * | 2018-05-28 | 2018-09-04 | 广东省特种设备检测研究院 | Low-temperature (low temperature) vessel vacuumizes resistance performance test device and test method with multilayer insulant |
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| Publication number | Publication date |
|---|---|
| CN101509823B (en) | 2010-10-06 |
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