SU1596217A1 - Method of checking hermetic sealing of articles - Google Patents
Method of checking hermetic sealing of articles Download PDFInfo
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- SU1596217A1 SU1596217A1 SU884484695A SU4484695A SU1596217A1 SU 1596217 A1 SU1596217 A1 SU 1596217A1 SU 884484695 A SU884484695 A SU 884484695A SU 4484695 A SU4484695 A SU 4484695A SU 1596217 A1 SU1596217 A1 SU 1596217A1
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- SU
- USSR - Soviet Union
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- pressure
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- cavity
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- test gas
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- Examining Or Testing Airtightness (AREA)
Abstract
Изобретение относитс к области испытаний на герметичность и позвол ет повысить надежность контрол изделий с течами от 1 до 1.10 -5 л мкм рт.ст./с путем подбора в процессе контрол давлени пробного газа в полости издели , при котором его утечка максимальна. Изделие помещают в герметичную камеру, вакуумируют полость камеры и издели . Повышают давление пробного газа в полости издели от 0 до 10 кгс/см 2. Повышение давлени ведут ступенчато с шагом 0,2-1,2 кгс/см 2. После каждого повышени давлени провод т измерение утечки пробного газа в герметичную камеру. Степень герметичности издели определ ют при давлении, обеспечивающем максимальную утечку через микродефект.The invention relates to the field of tightness testing and allows to increase the reliability of control of products with leaks from 1 to 1.10 -5 l µm Hg / s by selecting in the process of control the pressure of the test gas in the cavity of the product at which its leakage is maximum. The product is placed in a sealed chamber, vacuum chamber cavity and the product. Increase the pressure of the test gas in the product cavity from 0 to 10 kgf / cm2. The pressure is increased stepwise with a step of 0.2-1.2 kgf / cm2. After each pressure increase, the leakage of the test gas into the hermetic chamber is measured. The degree of tightness of the product is determined at a pressure that provides maximum leakage through the microdefect.
Description
Изобретение относитс к испытани м на герметичность и может быть использовано при вы влении течей в диапазоне 1 - 1.,мкм рт.ст./с.The invention relates to leak tests and can be used in the detection of leaks in the range of 1 - 1. microns Hg / s.
Цель изобретени - повышение надежности контрол изделий с течами в диапазоне 1 - 1-10 л.мкм рт.сТо/с путем подбора в процессе контрол давлени пробного газа, при котором микродефект восстанавливает пропускную способность по пробному газу.The purpose of the invention is to increase the reliability of monitoring products with leaks in the range of 1 - 1-10 l.mkm HgTo / s by selecting a test gas in the process of controlling the pressure, at which the micro defect will restore the throughput of the sample gas.
Способ контрол герметичности изделий осуществл ют следующим образом. The method of controlling the tightness of the products is carried out as follows.
Изделие, полость которого соединена с источником пробного газа, помещают в герметичную камеру. Вакуумируют камеру и внутреннюю полость издели , после чего повышают давление пробного газа в полости издели от О до 10 кгс/см. Повышение давлени , провод т ступенчато с шагом 0,2 1 ,2 кгс/см о При этом, чем выше Тгребовани , предъ вл емые к герметичности изделий, тем больша величина шага при повышении давлени . После каждого повышени давлени провод т измерение утечки пробного газа в герметичную камеру. Поскольку реальные микродефекты имеют самую разную геометрию и структуру, зависимость пропускной способности по пробному газу от его давлени , особенно при наличии в полости микродефекта сконденсировавшейс влаги, также имеет различный характер Поэтому степень герметичности определ ют при давлении , обеспечивающем максимальную утечку пробного газа через микродефект.The product, the cavity of which is connected to a source of test gas, is placed in a sealed chamber. The chamber and the internal cavity of the product are evacuated, after which the pressure of the test gas in the cavity of the product is increased from 0 to 10 kgf / cm. The increase in pressure is carried out in steps of 0.2 1, 2 kgf / cm o step. In this case, the higher the pressure required for leaktightness of products, the greater the step size with increasing pressure. After each increase in pressure, a test gas leakage measurement into the sealed chamber is carried out. Since real microdefects have very different geometries and structures, the dependence of the throughput capacity of the test gas on its pressure, especially when condensed moisture is present in the microdefect cavity, also has a different character. Therefore, the degree of tightness is determined at a pressure that ensures the maximum leakage of the test gas through the microdefect.
Таким образом, использование предлагаемого способа позвол ет повысить надежность контрол изделий с течами в диапазоне 1 - 1 ,мкм рт.ст ./с,Thus, the use of the proposed method makes it possible to increase the reliability of control of products with leaks in the range of 1–1 µm Hg / s,
315962174315962174
путем подбора такого давлени проб-ного газа через микродефект и опредекого газа в полости издели , котороелени по ней степени герметичности,by selecting such a pressure of the test gas through a microdefect and a specific gas in the cavity of the product, which is her degree of tightness,
обеспечивает максимальную утечку проб-о т л-и чаю щ и и с тем, что, сprovides the maximum leakage of prob-about t l-and tea u and with the fact that, with
ного газа. целью повьшени надежности контрод foot gas. aim to increase reliability
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU884484695A SU1596217A1 (en) | 1988-08-04 | 1988-08-04 | Method of checking hermetic sealing of articles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU884484695A SU1596217A1 (en) | 1988-08-04 | 1988-08-04 | Method of checking hermetic sealing of articles |
Publications (1)
Publication Number | Publication Date |
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SU1596217A1 true SU1596217A1 (en) | 1990-09-30 |
Family
ID=21400176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU884484695A SU1596217A1 (en) | 1988-08-04 | 1988-08-04 | Method of checking hermetic sealing of articles |
Country Status (1)
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SU (1) | SU1596217A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2649215C1 (en) * | 2016-12-08 | 2018-03-30 | Акционерное Общество "Научно-Исследовательский Институт "Гермес" | Method and device for control of the sealing of bottoms of fuel tanks of liquid rockets |
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1988
- 1988-08-04 SU SU884484695A patent/SU1596217A1/en active
Non-Patent Citations (1)
Title |
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Авторское свидетельство СССР № 761864, кло G 01 М 3/02, 1977, * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2649215C1 (en) * | 2016-12-08 | 2018-03-30 | Акционерное Общество "Научно-Исследовательский Институт "Гермес" | Method and device for control of the sealing of bottoms of fuel tanks of liquid rockets |
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