CN103604568B - The helium mass spectrometer leak detector suction gun of spacecraft leak detection - Google Patents
The helium mass spectrometer leak detector suction gun of spacecraft leak detection Download PDFInfo
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- CN103604568B CN103604568B CN201310576718.0A CN201310576718A CN103604568B CN 103604568 B CN103604568 B CN 103604568B CN 201310576718 A CN201310576718 A CN 201310576718A CN 103604568 B CN103604568 B CN 103604568B
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Abstract
The invention discloses the helium mass spectrometer leak detector suction gun of a kind of spacecraft leak detection, comprise external structure and inner structure, external structure comprises the medical needle being mechanically connected setting successively, suction gun bar, front chamber, middle chamber, rear chamber and be in the flexible pipe for being connected leak locator that the suction gun handle below three chambers arranges with handle, at its lower end, inner structure comprises the O-ring seal set gradually, filter, with porose and right cylinder that is conehead, connecting link and pressure regulation post, the rear end of suction gun bar and the outlet side of front chamber arrange O-ring seal and filter respectively, two O-ring seals are for sealing suction gun inner structure and external structure, the distance of the spacing of passing hole and conehead regulates pressure or the uninterrupted of the gas entered in leak locator, the right cylinder of taper and pressure regulation post couple together by connecting link.Suction gun of the present invention can be applicable to the helium mass spectrometer leak detector of different model, exactly the leak detection mouth pressure of leak locator can be controlled at tens handkerchiefs within the scope of hundreds of handkerchief, facilitate various model leak locator to carry out testing and effectively can improve the reaction velocity in leak detection test, improving leak detection efficiency.
Description
Technical field
The invention belongs to the technical field of spacecraft leak detection, specifically, the present invention relates to the helium mass spectrometer leak detector suction gun in a kind of spacecraft single-point leak detection process.
Background technology
At present, China's spacecraft all can fill certain pressure or certain density helium before single-point leak detection in airtight container or pipeline, then smells spy with suction gun to sealing position.The leak detection of spacecraft single-point is mainly hunted leak to pipeline spiro junction, pipe welding seam and equipment component sealing station.Due to the mechanical seal structure of spacecraft and pipe system comparatively complicated, the leak detection suction gun that leak locator is carried is difficult to meet single-point leak detection work.
Usually, the suction gun that leak locator carries forms primarily of suction gun head 1, suction gun shell 2, filtrator 3, metering hole or current limliting kapillary 4 and flexible pipe 5, as shown in Figure 1.
Suction gun of the prior art is once make, and the conductance value of its current limliting is just fixed, and is only suitable for using on a certain class leak locator, and namely it cannot regulate, change leak detection mouth pressure.And polytype leak locator in spacecraft leak detection process, can be used, and the pressure of mouth of hunting leak separately is all different.In addition according to spacecraft single-point leak hunting method, spaceborne single-point needs to use medical proof fabric to carry out parcel and collects.Tradition leak detection suction gun cannot penetrate medical proof fabric, cannot complete single-point leak detection work.Spacecraft single-point leak detection number ratio is more, and every spacecraft has hundreds of single-points to be needed to detect, and the quality of suction gun, volume and Mechanical Builds have a great impact testing staff's operation convenience and comfortableness.In order to solve the inconvenience in space flight single-point leak detection process, the suction gun designing a kind of applicable spacecraft single-point leak detection is very necessary.
Summary of the invention
The object of the invention is to provide a kind of suction gun that can carry out single-point leak detection to spaceborne bolted joint, weld seam and other spacecraft sealing station.This suction gun can test out the single-point leak rate of spacecraft diverse location quickly and easily, solves leak detection mouth pressure well and regulates the problems such as problem, spacecraft distinctive leak hunting method problem and traditional suction gun inconvenient operation.
The helium mass spectrometer leak detector suction gun of spacecraft leak detection of the present invention, comprise external structure and inner structure, external structure comprises the medical needle being mechanically connected setting successively, suction gun bar, front chamber, middle chamber, rear chamber and be in the flexible pipe for being connected leak locator that the suction gun handle below three chambers arranges with handle, at its lower end, medical needle is for thrusting the medical proof fabric of the outer wrapping of spacecraft spiro junction or pipe welding seam to draw the helium in medical proof fabric collecting hood, front chamber is used for the gas entering leak locator to filter, middle chamber and rear chamber are for regulating the gaseous tension or uninterrupted that enter leak locator, inner structure comprises the O-ring seal set gradually, filter, with porose and right cylinder that is conehead, connecting link and pressure regulation post, the rear end of suction gun bar embeds circular corrosion resistant plate, circular groove is set on stainless steel for installing O-ring seal, circular groove is also set in the outlet side of front chamber for installing filter, circular corrosion resistant plate with O-ring seal is pressed on filter by cap nut by front chamber, circumferential section in the middle of the right cylinder of taper is arranged groove for installation O-ring seal, middle chamber and rear chamber and front chamber's seal isolation are come, two O-ring seals are for sealing suction gun inner structure and external structure, make in suction gun, outside does not produce leakage, filter enters the gas of leak locator for filtering, the distance of the spacing of passing hole and conehead regulates pressure or the uninterrupted of the gas entered in leak locator, the right cylinder of taper and pressure regulation post couple together by connecting link, by regulating the distance moved forward and backward between control punch and conehead of pressure regulation post, be provided with at metal tube between two O-ring seals, metal tube is with external thread, thread seal place is coated with fluid sealant, the termination flexible pipe of giving vent to anger of metal tube, metal tube and flexible pipe are all arranged in suction gun handle, wherein flexible pipe passes from the below of handle, be connected with leak locator.
Wherein, described metal tube is copper pipe.
Wherein, described suction gun handle is the suction gun handle meeting staff engineering science.
Wherein, described flexible pipe is plastic flexible pipe or metal hose.
Wherein, suction gun bar is aluminium alloy, the interface consistent size of outside dimension and medical needle.
Compared with prior art, the present invention has the following advantages:
1) spacecraft leak detection suction gun is adjustable suction gun, can be applicable to the helium mass spectrometer leak detector of different model, can be controlled by the leak detection mouth pressure of leak locator accurately at tens handkerchiefs, within the scope of hundreds of handkerchief, to facilitate various model leak locator to test.
2) spacecraft leak detection suction gun can adjust the pressure of suction gun as required in leak detection process, effectively can improve the reaction velocity in leak detection test, improves leak detection efficiency.
3) structure of the suction gun handle and small volume and less weight that meet ergonomics improves the comfortableness in leak detection operating personnel use procedure.
Accompanying drawing explanation
Fig. 1 leak locator suction gun of the prior art structural drawing.
Wherein, 1 suction gun head; 2 suction gun shells; 3 filtrators; 4 metering holes or current limliting kapillary; 5 flexible pipes.
The external structure of the helium mass spectrometer leak detector suction gun that Fig. 2 the present invention uses;
Wherein, 5 flexible pipes; 6 medical needles; 7 suction gun bars; 8 front chamber; 9 middle chambers; 10 rear chamber; The 11 suction gun handles meeting ergonomics;
The cut-away view of Fig. 3 spacecraft leak detection of the present invention suction gun;
Wherein, 5 flexible pipes; 6 medical needles; 7 suction gun bars; 12 O-ring seals; 13 filters; 14 narrow meshed chamber walls; 15 with the right cylinder of conehead; 16 connecting links; 17 pressure regulation posts; 18 copper pipes;
The schematic diagram of single-point leak detection (bolted joint not with leak hunting aperture) of Fig. 4 spacecraft leak detection of the present invention suction gun;
The schematic diagram of single-point leak detection (weld seam) of Fig. 5 spacecraft leak detection of the present invention suction gun;
The schematic diagram of the single-point leak detection (bolted joint of band leak hunting aperture) of Fig. 6 spacecraft leak detection of the present invention suction gun.
Embodiment
What below introduce is embodiment as content of the present invention, further illustrates described content of the present invention below by embodiment.Certainly, describe the content that following detailed description is only example different aspect of the present invention, and should not be construed as the restriction scope of the invention.
With reference to the external structure that Fig. 2, Fig. 2 are the helium mass spectrometer leak detector suction gun that the present invention uses.The helium mass spectrometer leak detector suction gun of spacecraft leak detection of the present invention, comprise external structure and inner structure, external structure comprises the medical needle 6 being mechanically connected setting successively, suction gun bar 7, front chamber 8, middle chamber 9, rear chamber 10 and be in the flexible pipe 5 for being connected leak locator that the suction gun handle 11 meeting staff engineering science below middle chamber arranges with handle 11 lower end, medical needle 6 is for thrusting the medical proof fabric of the outer wrapping of spacecraft spiro junction or pipe welding seam to draw the helium in medical proof fabric collecting hood, front chamber 8 is for filtering the gas entering leak locator, middle chamber 9 and rear chamber 10 are for regulating the gaseous tension or uninterrupted that enter leak locator, inner structure comprises the O-ring seal 12 set gradually, filter 13, be with foraminate chamber wall 14, right cylinder 15 with conehead, connecting link 16 and pressure regulation post 17, the rear end of suction gun bar 7 embeds circular corrosion resistant plate, circular groove is set on stainless steel for installing O-ring seal 12, circular groove is also set in the outlet side of front chamber 8 for installing filter 13, circular corrosion resistant plate with O-ring seal 12 is pressed on filter 13 by cap nut by front chamber 8, circumferential section in the middle of right cylinder 15 with conehead is arranged groove for installation O-ring seal 12, middle chamber 9 and rear chamber 10 are come with front chamber 8 seal isolation, two O-ring seals are for sealing suction gun inner structure and external structure, make in suction gun, outside does not produce leakage, filter 13 enters the gas of leak locator for filtering, pressure or the uninterrupted of the gas entered in leak locator is regulated by the distance of the aperture of narrow meshed chamber wall 14 and the spacing of conehead, the right cylinder of taper and pressure regulation post 17 couple together by connecting link 16, by regulating the distance moved forward and backward between control punch and conehead of pressure regulation post 17, be provided with at metal tube between two O-ring seals, preferred copper pipe 18, metal tube is with external thread, thread seal place is coated with fluid sealant, the termination flexible pipe of giving vent to anger of metal tube, metal tube and flexible pipe are all arranged in suction gun handle, wherein flexible pipe passes from the below of handle, be connected with leak locator.
In an embodiment, flexible pipe is plastic flexible pipe.
In an embodiment, suction gun bar is aluminium alloy, the interface consistent size of outside dimension and medical needle.Suction gun bar adopts aluminum alloy materials, the interface consistent size of outside dimension and medical needle.The rear end of suction gun bar embeds circular corrosion resistant plate, digs circular groove on stainless steel for installing O-ring seal, digs circular groove for installing filter in the outlet side of front chamber.Circular corrosion resistant plate with O-ring seal is pressed on filter by the cap nut of front chamber.Dig groove for installing O-ring seal in the middle of the right cylinder of taper, it is come at middle chamber and rear chamber's seal isolation.Connecting link couples together with the right cylinder of taper and pressure regulation post.Pressure regulation post is a screwed cylinder, turns " one " word mouth on pressure regulation post, pressure regulation post can be made to advance in rear chamber or retreat with screwdriver.Pressure regulation post advance or after withdraw the membership to drive and advance together with the right cylinder of taper or retreat.When right cylinder advances, its tapered pole can block the aperture in front chamber gradually, and the gas now entering leak locator can be fewer and feweri, and namely the leak detection mouth pressure of leak locator can be more and more less; And tapered pole can open aperture gradually when right cylinder retreats, the gas now entering leak locator can get more and more, and the pressure at the mouth place that namely hunts leak can be increasing.By regulating pressure regulation post to make the gas flow entering leak locator change, and then change the leak detection mouth pressure of leak locator.
Install metal tube in the below of middle chamber, this metal tube is with external thread, and thread seal place is coated with fluid sealant.The termination flexible pipe of giving vent to anger of copper pipe, copper pipe and flexible pipe are all arranged on and meet on the suction gun handle of ergonomics, and wherein flexible pipe passes from the below of handle, is connected with leak locator.
With holding tight suction gun handle during use, the syringe needle of suction gun being inserted in helium cover, or syringe needle is inserted in the leak hunting aperture of bolted joint, as shown in Figure 4, Figure 5 and Figure 6.By regulating the position of pressure regulation post, make connecting link drive with the right cylinder of conehead, the gap size between centrum and aperture determines the uninterrupted of suction gun, and then determines the leak detection mouth pressure of leak locator.
Although be described in detail the specific embodiment of the present invention above and illustrate, but what should indicate is, we can make various changes and modifications above-mentioned embodiment, but these do not depart from spirit of the present invention and the scope described in appended claim.
Claims (4)
1. the helium mass spectrometer leak detector suction gun of spacecraft leak detection, comprise external structure and inner structure, external structure comprises the medical needle being mechanically connected setting successively, suction gun bar, front chamber, middle chamber, rear chamber and be in the flexible pipe for being connected leak locator that the suction gun handle below three chambers arranges with handle, at its lower end, medical needle is for thrusting the medical proof fabric of the outer wrapping of spacecraft spiro junction or pipe welding seam to draw the helium in medical proof fabric collecting hood, front chamber is used for the gas entering leak locator to filter, middle chamber and rear chamber are for regulating the gaseous tension or uninterrupted that enter leak locator, inner structure comprises the O-ring seal set gradually, filter, narrow meshed chamber wall, with the right cylinder of conehead, connecting link and pressure regulation post, the rear end of suction gun bar embeds circular corrosion resistant plate, circular groove is set on stainless steel for installing O-ring seal, circular groove is also set in the outlet side of front chamber for installing filter, circular corrosion resistant plate with an O-ring seal is pressed on filter by cap nut by front chamber, described cylindrical intermediate circumference part is arranged groove for another O-ring seal of installation, middle chamber is come together with rear chamber and front chamber's seal isolation, two O-ring seals are for sealing suction gun inner structure and external structure, make in suction gun, outside does not produce leakage, filter enters the gas of leak locator for filtering, pressure or the uninterrupted of the gas entered in leak locator is regulated by the distance of the spacing of the aperture on the wall of narrow meshed chamber and conehead, the right cylinder of taper and pressure regulation post couple together by connecting link, by regulating the distance moved forward and backward between control punch and conehead of pressure regulation post, metal tube is provided with between two O-ring seals, metal tube is with external thread, thread seal place is coated with fluid sealant, the termination flexible pipe of giving vent to anger of metal tube, metal tube and flexible pipe are all arranged in suction gun handle, wherein flexible pipe passes from the below of handle, be connected with leak locator.
2. helium mass spectrometer leak detector suction gun as claimed in claim 1, wherein, described metal tube is copper pipe.
3. helium mass spectrometer leak detector suction gun as claimed in claim 1, wherein, described suction gun handle is the suction gun handle meeting staff engineering science.
4. the helium mass spectrometer leak detector suction gun as described in any one of claim 1-3, wherein, suction gun bar is aluminium alloy, the interface consistent size of outside dimension and medical needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576718.0A CN103604568B (en) | 2013-11-18 | 2013-11-18 | The helium mass spectrometer leak detector suction gun of spacecraft leak detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310576718.0A CN103604568B (en) | 2013-11-18 | 2013-11-18 | The helium mass spectrometer leak detector suction gun of spacecraft leak detection |
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| CN103604568A CN103604568A (en) | 2014-02-26 |
| CN103604568B true CN103604568B (en) | 2015-12-02 |
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| CN106932155A (en) * | 2015-12-30 | 2017-07-07 | 核动力运行研究所 | A kind of getter device suitable for heat-transfer pipe helium leak test |
| CN106092462B (en) * | 2016-05-17 | 2019-06-07 | 中广核检测技术有限公司 | Nuclear boiler heat-transfer pipe helium mass spectrum leak detection tube sheet sampling tool frame |
| CN106500916A (en) * | 2016-12-02 | 2017-03-15 | 广州供电局有限公司 | SF6Powered leak detector |
| CN108663168A (en) * | 2018-08-28 | 2018-10-16 | 哈尔滨锅炉厂有限责任公司 | For detecting reducing butt tube helium leak test sealing device and detection method |
| CN109724754B (en) * | 2018-12-24 | 2020-05-26 | 北京卫星环境工程研究所 | Multifunctional leakage detection suction gun with self-coating probe and adjustable inlet pressure |
| CN110174224B (en) * | 2019-04-23 | 2021-06-29 | 中国科学院合肥物质科学研究院 | Helium mass spectrum backpressure leak detection method for stainless steel welding seam on outer layer of conductor with multilayer composite structure |
| CN110672281A (en) * | 2019-09-26 | 2020-01-10 | 大族激光科技产业集团股份有限公司 | Gas leakage detection probe and gas tightness detection device |
| CN113787492A (en) * | 2021-09-17 | 2021-12-14 | 北京卫星环境工程研究所 | Electric tool for space on-orbit maintenance |
| CN114001878A (en) * | 2021-11-04 | 2022-02-01 | 深圳华尔升智控技术有限公司 | Gas filtering mechanism for helium mass spectrometer leak detector |
| CN115855383B (en) * | 2022-12-02 | 2023-09-26 | 苏州中科科仪技术发展有限公司 | Suction gun maintenance device, maintenance calibration device and method thereof |
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Inventor after: Sun Lichen Inventor after: Zhang Wuxiang Inventor after: Liu Sheng Inventor after: Yang Dingkui Inventor after: Zhang Tao Inventor after: Dou Renchao Inventor after: Meng Donghui Inventor after: Hong Xiaopeng Inventor after: Ding Xilun Inventor after: Shi Lixia Inventor after: Feng Qi Inventor after: Liu Xingyue Inventor after: Ren Guohua Inventor before: Dou Renchao Inventor before: Yang Dingkui Inventor before: Sun Lichen Inventor before: Meng Donghui Inventor before: Hong Xiaopeng Inventor before: Shi Lixia Inventor before: Feng Qi Inventor before: Liu Xingyue Inventor before: Ren Guohua Inventor before: Liu Sheng |
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