CN103091052B - Normal temperature vacuum leak-detection system used for spacecraft part assembly - Google Patents
Normal temperature vacuum leak-detection system used for spacecraft part assembly Download PDFInfo
- Publication number
- CN103091052B CN103091052B CN201110344872.6A CN201110344872A CN103091052B CN 103091052 B CN103091052 B CN 103091052B CN 201110344872 A CN201110344872 A CN 201110344872A CN 103091052 B CN103091052 B CN 103091052B
- Authority
- CN
- China
- Prior art keywords
- leak
- valve
- leak detection
- referance
- high vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a normal temperature vacuum leak-detection system. According to the vacuum leak-detection system, due to the fact that a screw dry pump is selected to serve as a preceding-level sucking pump, a high vacuum leak-detection valve is additionally arranged between a high vacuum main pump and a high vacuum valve. A standard leak air exhaust valve, a standard leak leakage detecting valve and a standard leak sucking pump are arranged between a standard leak and a vacuum container. The valves used for detecting leakage are connected with a control unit through a service cable, wherein the control unit is provided with manual and automatic control modes. Therefore, automatic calibration of the leak-detection system is achieved.
Description
Technical field
The invention belongs to the field of non destructive testing of spacecraft parts sealing property, the vacuum leak detecting system used under being specifically related to a kind of normal temperature, this system is mainly used in the leak detection of spacecraft parts.
Background technology
For the spacecraft parts with seal request, sealing property test is the test event that must carry out.At present, the sealing property test of China's spacecraft parts mostly adopts the leak hunting method of vacuum leak hunting.The referance leak of vacuum leak hunting adopts film to ooze helium type referance leak usually, but, be subject to the impact of the factors such as the accumulation of referance leak helium, forepump type and environment helium reflux, the raising of leak detection sensitivities and the error of test leak rate reduce, and all receive restriction to a certain degree.
Summary of the invention
The object of the invention is to reduce film and ooze the test leak rate error that helium type referance leak helium accumulation problem causes, by reducing forepumping pump, leak detection sensitivities being improved to the split ratio of helium, the reflux that reduces environment helium.
A kind of leak detection system for Ministry of Aerospace Industry's assembly normal-temperature vacuum leak detection, comprise cylindrical vacuum vessel, high vacuum valve, high vacuum leak detection valve, high vacuum pump, forepumping valve, forepumping pump, prime leak detection valve, helium mass spectrometer leak detector, referance leak, referance leak leak detection valve, referance leak aspiration pump, referance leak evacuating valve and control module, the barrel of vacuum tank is connected to high vacuum valve and referance leak leak detection valve, the other end of high vacuum valve is connected with high vacuum pump, forepumping pump is connected with high vacuum pump by forepumping valve, between high vacuum valve and high vacuum pump, pump-line between high vacuum pump and forepumping valve to be hunted leak valve respectively by high vacuum, prime leak detection valve is connected with helium mass spectrometer leak detector, between the other end of referance leak leak detection valve and referance leak, four-way vacuum interface is set, the four interfaces connection standard small opening leak detection valve respectively of four-way vacuum interface, referance leak evacuating valve, referance leak and referance leak venting valve, referance leak aspiration pump is connected with four-way vacuum interface by referance leak evacuating valve, the other end JA(junction ambient) air of referance leak venting valve, wherein, high vacuum valve, high vacuum leak detection valve, high vacuum main pump, prime leak detection valve, forepumping valve, forepumping pump, referance leak leak detection valve, referance leak aspiration pump, referance leak evacuating valve is connected with control module by service cable, helium mass spectrometer leak detector is connected with control module with test cable by service cable.
Preferably, the type of forepumping pump is the dry pump of screw rod.
Preferably, the type of forepumping valve, high vacuum leak detection valve, forepumping valve, prime leak detection valve, referance leak leak detection valve, referance leak evacuating valve is normally closed ELECTROMAGNETIC VACUUM valve.
Preferably, the type of referance leak venting valve is for often to open ELECTROMAGNETIC VACUUM valve.
Further, helium mass spectrometer leak detector can access leak detection system by hunt leak valve or prime leak detection valve two kinds of modes of high vacuum.
Further, control module manually and automatically can control the opening and closing of high vacuum leak detection valve, prime leak detection valve, referance leak leak detection valve and referance leak evacuating valve.
Further, referance leak is that film oozes helium type referance leak.
The present invention has following beneficial effect: 1. forepumping pump adopts the dry pump of screw rod, under the prerequisite keeping forvacuum degree, can reduce forepump to the split ratio of helium, and then improve leak detection sensitivities.2. the type of forepumping valve, high vacuum leak detection valve, prime leak detection valve, referance leak leak detection valve and referance leak evacuating valve is ELECTROMAGNETIC VACUUM valve, is conducive to the realization of leak detection system automatic calibration function.3. high vacuum leak detection valve is set between high vacuum valve and high vacuum pump, when environment concentrations of helium is higher, can ensures that the sensitivity of leak detection system does not reduce.4. standard evacuating valve, referance leak venting valve and referance leak aspiration pump are set between referance leak and referance leak leak detection valve, the helium accumulation problem that film oozes helium type referance leak can be eliminated.5. sliding vane rotary pump oozes in helium type referance leak helium accumulation problem at elimination film, has vacuum tightness performance and Eco-power double dominant.6. single automatic calibration function that can realize leak detection system is controlled.
Accompanying drawing explanation
Fig. 1 is the instrument and equipment connection diagram of the leak detection system of spacecraft parts normal-temperature vacuum of the present invention leak detection.
Fig. 2 is the control linkage schematic diagram of the leak detection system of spacecraft parts normal-temperature vacuum of the present invention leak detection.
In figure: 1-vacuum tank; 2-referance leak leak detection valve; 3-referance leak venting valve; 4-four-way vacuum interface; 5-referance leak; 6-referance leak evacuating valve; 7-referance leak aspiration pump; 8-high vacuum valve, 9-high vacuum pump; 10-forepumping valve; 11-forepumping pump; 12-prime leak detection valve; 13-helium mass spectrometer leak detector; 14-high vacuum leak detection valve; 15-service cable; 16-test cable; 17-control module.
Embodiment
Referring to accompanying drawing, the present invention is described in detail, but the object that accompanying drawing is only not illustrated, be not intended to carry out any restriction to protection scope of the present invention, its scope is limited by appending claims.
Fig. 1 shows the leak detection system schematic diagram of spacecraft parts normal-temperature vacuum of the present invention leak detection.The leak detection system of the normal-temperature vacuum leak detection of this spacecraft parts, comprise cylindrical vacuum vessel 1, high vacuum valve 8, high vacuum leak detection valve 14, high vacuum pump 9, forepumping valve 10, forepumping pump 11, prime leak detection valve 12, helium mass spectrometer leak detector 13, referance leak 5, referance leak leak detection valve 2, referance leak aspiration pump 7, referance leak evacuating valve 6 and control module 17, the barrel of vacuum tank 1 is connected to high vacuum valve 8 and referance leak leak detection valve 2, the other end of high vacuum valve 8 is connected with high vacuum pump 9, forepumping pump 11 is connected with high vacuum pump 9 by forepumping valve 10, between high vacuum valve 8 and high vacuum pump 9, pump-line between high vacuum pump 9 with forepumping valve 10 is connected with helium mass spectrometer leak detector 13 respectively by high vacuum valve 14 and prime valve 12 of hunting leak of hunting leak, the other end of referance leak leak detection valve 2 and referance leak 5, such as film oozes helium type referance leak, between four-way vacuum interface 4 is set, four interfaces connection standard small opening leak detection valve 2, referance leak evacuating valve 6, referance leak 5 and the referance leak venting valve 3 respectively of four-way vacuum interface 4, referance leak aspiration pump 7 is connected with four-way vacuum interface 4 by referance leak evacuating valve 6, the other end JA(junction ambient) air of referance leak venting valve 3.
In this embodiment, the type of forepumping pump 11 is the dry pump of screw rod, the type of forepumping valve 10, high vacuum leak detection valve 14, prime leak detection valve 12, referance leak leak detection valve 2 and referance leak evacuating valve 6 is ELECTROMAGNETIC VACUUM valve, and referance leak venting valve 3 is open type solenoid vacuum valve.Generally, helium mass spectrometer leak detector 13 accesses leak detection system by prime leak detection valve 12.When concentrations of helium is higher in atmospheric environment, close prime leak detection valve 12, helium mass spectrometer leak detector 13 accesses leak detection system by high vacuum leak detection valve 14 and hunts leak, and then improves leak detection system.If the type of referance leak 5 is film ooze helium type, when leak detection system does not work or system does not power up, referance leak venting valve 3 is held open, and avoids the helium accumulation of referance leak.After leak detection system energising runs, standard of closure small opening leak detection valve 2 and referance leak venting valve 3, open referance leak evacuating valve 6, operation standard small opening aspiration pump 7, makes the mouth of taking out of referance leak 5 keep vacuum state, when needs carry out leak detection system timing signal always, standard of closure small opening evacuating valve 6, open referance leak leak detection valve 2, the calibration of leak detection system can be carried out, it also avoid the helium accumulation of referance leak 5 in vacuum tank 1 vacuum simultaneously.
Fig. 2 shows the electrical connection schematic diagram of spacecraft parts normal-temperature vacuum leak detection system of the present invention.Wherein high vacuum valve, high vacuum leak detection valve, high vacuum main pump, forepumping valve, forepumping pump, prime leak detection valve, referance leak evacuating valve, referance leak aspiration pump, referance leak leak detection valve are connected with control module 17 respectively by service cable 15, and helium mass spectrometer leak detector is connected with control module 17 with test cable 16 by service cable 15.
Although give detailed description and explanation to the specific embodiment of the present invention above; but what should indicate is; those skilled in the art can carry out various equivalence according to spirit of the present invention to above-mentioned embodiment and change and amendment; its function produced do not exceed that instructions and accompanying drawing contain spiritual time, all should within scope.
Claims (7)
1., for a leak detection system for Ministry of Aerospace Industry's assembly normal-temperature vacuum leak detection, comprise columniform vacuum tank (1), high vacuum valve (8), high vacuum leak detection valve (14), high vacuum pump (9), forepumping valve (10), forepumping pump (11), prime leak detection valve (12), helium mass spectrometer leak detector (13), referance leak (5), referance leak leak detection valve (2), referance leak aspiration pump (7), referance leak evacuating valve (6) and control module (17), it is characterized in that, the barrel of vacuum tank (1) is connected to high vacuum valve (8) and referance leak leak detection valve (2), the other end of high vacuum valve (8) is connected with high vacuum pump (9), forepumping pump (11) is connected with high vacuum pump (9) by forepumping valve (10), between high vacuum valve (8) and high vacuum pump (9), pump-line between high vacuum pump (9) and forepumping valve (10) to be hunted leak valve (14) respectively by high vacuum, prime leak detection valve (12) is connected with helium mass spectrometer leak detector (13), between the other end of referance leak leak detection valve (2) and referance leak (5), four-way vacuum interface (4) is set, four interfaces connection standard small opening leak detection valve (2) respectively of four-way vacuum interface (4), referance leak evacuating valve (6), referance leak (5) and referance leak venting valve (3), referance leak aspiration pump (7) is connected with four-way vacuum interface (4) by referance leak evacuating valve (6), the other end JA(junction ambient) air of referance leak venting valve (3), wherein, high vacuum valve (8), high vacuum leak detection valve (14), high vacuum pump (9), prime leak detection valve (12), forepumping valve (10), forepumping pump (11), referance leak leak detection valve (2), referance leak aspiration pump (7), referance leak evacuating valve (6) is connected with control module (17) by service cable (15), helium mass spectrometer leak detector is connected with control module with test cable (16) by service cable (15).
2., as claimed in claim 1 for the leak detection system of Ministry of Aerospace Industry's assembly normal-temperature vacuum leak detection, it is characterized in that, the type of described forepumping pump is the dry pump of screw rod.
3. as claimed in claim 1 or 2 for the leak detection system of Ministry of Aerospace Industry's assembly normal-temperature vacuum leak detection, it is characterized in that, the type of forepumping valve, high vacuum leak detection valve, forepumping valve, prime leak detection valve, referance leak leak detection valve, referance leak evacuating valve is normally closed ELECTROMAGNETIC VACUUM valve.
4. as claimed in claim 1 or 2 for the leak detection system of Ministry of Aerospace Industry's assembly normal-temperature vacuum leak detection, it is characterized in that, the type of referance leak venting valve is for often to open ELECTROMAGNETIC VACUUM valve.
5. as claimed in claim 1 or 2 for the leak detection system of Ministry of Aerospace Industry's assembly normal-temperature vacuum leak detection, it is characterized in that, control module is Non-follow control or the automatic control device controlling high vacuum leak detection valve, prime leak detection valve, referance leak leak detection valve, the opening and closing of referance leak evacuating valve.
6., as claimed in claim 1 or 2 for the leak detection system of Ministry of Aerospace Industry's assembly normal-temperature vacuum leak detection, it is characterized in that, referance leak is that film oozes helium type referance leak.
7. as claimed in claim 1 or 2 for the leak detection system of Ministry of Aerospace Industry's assembly normal-temperature vacuum leak detection, it is characterized in that, helium mass spectrometer leak detector accesses leak detection system by high vacuum leak detection valve or prime leak detection valve two kinds of modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110344872.6A CN103091052B (en) | 2011-11-04 | 2011-11-04 | Normal temperature vacuum leak-detection system used for spacecraft part assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110344872.6A CN103091052B (en) | 2011-11-04 | 2011-11-04 | Normal temperature vacuum leak-detection system used for spacecraft part assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103091052A CN103091052A (en) | 2013-05-08 |
| CN103091052B true CN103091052B (en) | 2015-07-08 |
Family
ID=48203898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110344872.6A Expired - Fee Related CN103091052B (en) | 2011-11-04 | 2011-11-04 | Normal temperature vacuum leak-detection system used for spacecraft part assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103091052B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374532B (en) * | 2014-10-29 | 2018-06-22 | 北京卫星环境工程研究所 | The in-orbit leakage orientation method of spacecraft |
| CN104676175A (en) * | 2015-01-29 | 2015-06-03 | 江苏广通管业制造有限公司 | Novel vacuum four-way connector |
| CN106679895B (en) * | 2015-11-06 | 2019-07-26 | 北京卫星环境工程研究所 | Leak rate Auto-Test System applied to large space environment simulator |
| CN105651464B (en) * | 2016-03-03 | 2018-12-25 | 北京卫星环境工程研究所 | For scaling method after the leak detection sensitivities of Large Spacecraft leak detection |
| CN107543661B (en) * | 2016-07-22 | 2019-11-26 | 北京卫星环境工程研究所 | The adjustable vacuum leak hunting automated system of sensitivity |
| CN107367359B (en) * | 2017-07-31 | 2019-04-19 | 哈尔滨电机厂有限责任公司 | Large turbo-type generator vacuum decay testing inspection analytical equipment |
| CN109632214A (en) * | 2018-11-30 | 2019-04-16 | 中国辐射防护研究院 | A kind of radioactive substance shipping container package containment properties detection system and method |
| CN111555168A (en) * | 2020-04-23 | 2020-08-18 | 吴童 | Vacuum high-voltage power distribution room |
| CN117825033B (en) * | 2024-03-04 | 2024-07-26 | 国科大杭州高等研究院 | Detection method of electric thruster gas distributor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549462Y (en) * | 2002-07-08 | 2003-05-07 | 郭跃辉 | Helium mass spectroscopic leakage inspector with wide range |
| CN101118197A (en) * | 2007-09-06 | 2008-02-06 | 中国核动力研究设计院 | High-temperature high pressure helium leak detection method and apparatus for detecting leakage thereof |
| CN101726396A (en) * | 2009-12-17 | 2010-06-09 | 中国航天科技集团公司第五研究院第五一○研究所 | Device and method for detecting leak rate of O type rubber sealing ring used for spaceflight |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2888241B2 (en) * | 1988-10-31 | 1999-05-10 | 株式会社島津製作所 | Leak test equipment |
| US20080202210A1 (en) * | 2007-02-28 | 2008-08-28 | Varian, Inc. | Test gas leak detection using a composite membrane |
-
2011
- 2011-11-04 CN CN201110344872.6A patent/CN103091052B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549462Y (en) * | 2002-07-08 | 2003-05-07 | 郭跃辉 | Helium mass spectroscopic leakage inspector with wide range |
| CN101118197A (en) * | 2007-09-06 | 2008-02-06 | 中国核动力研究设计院 | High-temperature high pressure helium leak detection method and apparatus for detecting leakage thereof |
| CN101726396A (en) * | 2009-12-17 | 2010-06-09 | 中国航天科技集团公司第五研究院第五一○研究所 | Device and method for detecting leak rate of O type rubber sealing ring used for spaceflight |
Non-Patent Citations (1)
| Title |
|---|
| 飞船部组件的检漏试验方法;孙立臣等;《航天器工程》;20060930;第15卷(第3期);第52页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103091052A (en) | 2013-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103091052B (en) | Normal temperature vacuum leak-detection system used for spacecraft part assembly | |
| CN208432627U (en) | Portable ultrahigh vacuum sample transfer device | |
| CN103674448B (en) | Control pressurer system and space capsule junction device for detecting leak rate and method | |
| CN102346088B (en) | Leakage detection method for helium mass spectrum with low helium filling concentration | |
| CN102455243B (en) | Air conditioning system leakage detection method | |
| CN109655212B (en) | Metal extrusion sealing leakage rate detection device and method | |
| CN208596014U (en) | It is a kind of to push vacuum leakage detection apparatus manually | |
| CN204314023U (en) | A kind of vacuum type helium inspection equipment | |
| CN103529079B (en) | A kind of moisture content test macro and method of testing thereof | |
| CN204679222U (en) | A kind of gas concentration sniffer | |
| CN203837905U (en) | Service life testing device for gas sealing valve | |
| CN204405270U (en) | One is dammed sampling method helium mass spectrum leak detection device | |
| CN201945448U (en) | Vacuum environment test system of directly operated type electromagnetic valve | |
| CN208505551U (en) | A kind of solenoid valve air-tight test closed system | |
| CN204514553U (en) | A kind of helium mass spectrometer leak detector detects the large device leaked | |
| CN108760190A (en) | A kind of solenoid valve air-tight test closed system | |
| CN209470827U (en) | A kind of device for detecting leak rate for low temperature multilead connector | |
| CN202008470U (en) | X-ray spectral measurement device with air isolation function | |
| CN102749180A (en) | On-line leak rate detection device for stop valve | |
| CN208847410U (en) | Overhead welding air tightness detection system | |
| CN207336006U (en) | A kind of gas circuit missing inspection device of gas sampler | |
| CN203414355U (en) | Leakproofness detecting device for flexible packages | |
| CN112857695A (en) | Laser gyro stable inflation and high-precision leak detection system | |
| CN109827719A (en) | A kind of device for detecting leak rate for low temperature multilead connector | |
| CN204347001U (en) | A kind of gas density analyzer calibration equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Lichen Inventor after: Zhang Tao Inventor after: Liu Enjun Inventor after: Shi Jijun Inventor after: Ding Xilun Inventor after: Zhang Wuxiang Inventor after: Guo Haitao Inventor after: Sun Lizhi Inventor after: Zhang Haifeng Inventor after: Wang Li Inventor after: Qi Feifei Inventor before: Shi Jijun Inventor before: Sun Lichen Inventor before: Guo Haitao Inventor before: Sun Lizhi Inventor before: Zhang Haifeng Inventor before: Wang Li Inventor before: Qi Feifei |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20211104 |