CN102818679B - Sampling device used in satellite total leak rate testing leak detector - Google Patents
Sampling device used in satellite total leak rate testing leak detector Download PDFInfo
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- CN102818679B CN102818679B CN201210254607.3A CN201210254607A CN102818679B CN 102818679 B CN102818679 B CN 102818679B CN 201210254607 A CN201210254607 A CN 201210254607A CN 102818679 B CN102818679 B CN 102818679B
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Abstract
The invention provides a sampling device used in a satellite total leak rate testing leak detector. The sampling device comprises a valve body, fixed size pores, a standard gas solenoid valve and a sample gas solenoid valve, wherein a leak detecting port connecting part is arranged between the valves; the upper part of a main channel of the leak detecting port connecting part is connected with a leak detecting port and pores are arranged at the connecting part; a sampling port of the leak detecting port connecting part is correspondingly connected with the standard gas solenoid valve and the sample gas solenoid valve; a standard gas inlet, a standard gas outlet and two sample gas ports are arranged at two sides of the valves respectively; and the standard gas inlet, the standard gas outlet and the two sample gas ports are gathered to one channel and communicated with the corresponding standard gas solenoid valve and the sample gas solenoid valve respectively. Compared with the prior art, the switchover between the standard gas and the sample gas during a total leak rate testing process is realized through the solenoid valve, the flow limiting during the total leak rate testing process is realized through the fixed sized pores, and the randomness that the flow limiting is realized depending on the compression of scratch is avoided.
Description
Technical field
The present invention relates to a kind of sampler for satellite integral leakage test leak locator, in particular to a kind of electronic sampling process that can complete leak locator, and jointly complete the sampler of integral leakage test job with standard helium mass spectrometer leak detector, finally realize the automatically working of integral leakage test process.
Background technology
Along with the development of spationautics, more and more higher to the demand of robotization, manual test need of work in the past improves, the test of satellite integral leakage also needs to realize robotization, the key device sampling system of integral leakage test governs the robotization of test, in the urgent need to developing a kind of sampler being convenient to realize robotization.
The sampler structural representation of existing leak locator as shown in Figure 1.
Wherein, connect the leak detection part 1 of mouth and be connected with the leak detection mouth of helium mass spectrometer leak detector, the tapered portion of thimble 2 has together cut artificially, when satellite integral leakage is tested, can be regulated the flow entering leak locator leak detection mouth by the screw thread at thimble 2 rear portion.Test process needs two gas mouths 3, one-in-and-one-out, provides calibrating gas; There are two sample gas ports 4, one-in-and-one-out, provide the gas needing test, by contrasting the difference between testing.Interval is needed to sample gas and sample gas in test process, position shown in Fig. 1 is the sampling process of gas, if need to sample sample gas, then manually movable sleeve 5 is pushed into sample gas port along fixed cover 6 aligns with sample tap 7, repeat above process 3 times, complete the integral leakage test sampling process of satellite.
This device can realize the sampling work in satellite integral leakage test process, but need by manual operation, loaded down with trivial details especially, be difficult to realize robotization, after other link all realizes robotization, sampler becomes the bottleneck in satellite integral leakage test automation process, in the urgent need to developing new sampler to realize the full-automation of integral leakage test process.In addition, the flow entering the gas of leak locator is realized by the extruding of the artificial cut of tapered portion after thimble in Fig. 12, and this current-limiting apparatus instability of flow, is not easy to make series standard product.Therefore, a kind of sampler that can realize robotization is developed very necessary.
Summary of the invention
The object of this invention is to provide a kind of sampler for satellite integral leakage test leak locator, it realizes the sampling process in integral leakage test process by solenoid valve, thus is convenient to the robotization realizing satellite integral leakage test process.
To achieve these goals, present invention employs following technical scheme:
For the sampler of satellite integral leakage test leak locator, comprise valve body, fixed measure aperture and gas solenoid valve and sample pneumoelectric magnet valve, the part connecing leak detection mouth is provided with in the middle of valve body, the part connecing leak detection mouth is made up of the main channel on top and two sample tap passages of bottom, be connected with the leak detection mouth of standard helium mass spectrometer leak detector above main channel and fixed measure aperture is set in its passage, two sample tap passages are connected respectively on gas solenoid valve and sample pneumoelectric magnet valve, valve body both sides are respectively arranged with two gas mouths and two sample gas ports of one-in-and-one-out, they are assembled a passage respectively and are communicated on corresponding gas solenoid valve and sample pneumoelectric magnet valve, the spool of gas solenoid valve moves up, cut off the path of gas mouth and sample tap, otherwise open the path of gas mouth and sample tap, complete the sampling process of gas, the spool of sample pneumoelectric magnet valve moves up, and cuts off the path of sample gas port and sample tap, otherwise opens the path of sample gas port and sample tap, complete the sampling process of sample gas.
Wherein, two gas mouths arrange the turnover being used to provide calibrating gas.Two sample gas ports arrange the turnover being used to provide gas to be tested.
Wherein, the diameter of fixed measure aperture is 10 μm ~ 20 μm.
Wherein, two solenoid valves are the low-voltage direct solenoid valve of 12V, and the leak rate index of valve is less than 1 × 10-7Pa.m3/s.
The present invention is used for the sampler of satellite integral leakage test leak locator, can realize the automatic sampling of integral leakage test process, and compared with prior art, sampling process, by manually changing into automatically, is convenient to the robotization that can realize test process.Adopt the aperture of fixed diameter to carry out limited flow, compared with original current-limiting apparatus, size is more prone to control, and can make standardized product series, select in actual mechanical process, decreases the uncertainty that original current-limiting apparatus produces flow.
Accompanying drawing explanation
Fig. 1 is the sampler structural representation of existing leak locator.
Wherein, 1 the part of leak detection mouth, is connect; 2, thimble; 3, gas mouth; 4, sample gas port; 5, movable sleeve; 6, fixed cover; 7, sample tap.
Fig. 2 is the sampler structural representation of the present invention for satellite integral leakage test leak locator.
Wherein, 1 the part of leak detection mouth, is connect; 11, valve body; 12, fixed measure aperture; 3, gas mouth; 4, sample gas port; 15, gas solenoid valve; 16, sample pneumoelectric magnet valve; 17, the path of sample tap.
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.
The present invention is used for the structural representation of the sampler of satellite integral leakage test leak locator as shown in Figure 2, it comprises valve body 11, fixed measure aperture 12 and gas solenoid valve 15 and sample pneumoelectric magnet valve 16, the part 1 connecing leak detection mouth is provided with in the middle of valve body, the part 1 connecing leak detection mouth is made up of the main channel on top and two sample tap passages of bottom, be connected with the leak detection mouth of standard helium mass spectrometer leak detector above main channel and fixed measure aperture 12 is set in its passage, two sample tap passages are connected respectively on gas solenoid valve 15 and sample pneumoelectric magnet valve 16, valve body 11 both sides are respectively arranged with two gas mouths 3 and two sample gas ports 4 of one-in-and-one-out, they are assembled a passage respectively and are communicated on corresponding gas solenoid valve 15 and sample pneumoelectric magnet valve 16, the spool of gas solenoid valve 15 moves up, cut off the path 17 of gas mouth 3 and sample tap, otherwise open the path 17 of gas mouth 3 and sample tap, complete the sampling process of gas, the spool of sample pneumoelectric magnet valve 16 moves up, and cuts off the path 17 of sample gas port 4 and sample tap, otherwise opens sample gas port 4 and the path 17 of sample tap, completes the sampling process of sample gas.Two gas mouths arrange the turnover being used to provide calibrating gas.Two sample gas ports arrange the turnover being used to provide gas to be tested.
In integral leakage test process, require that the pressure of leak detection mouth is between 10Pa ~ 30Pa, and stablize constant, flow is directly proportional with the diameter of aperture, through verification experimental verification, adopt 316 stainless steel materials of thickness 0.5mm, utilize high-precision laser cheesing techniques, the aperture of the fixed measure of diameter between 10 μm ~ 20 μm of processing, stable flow can be provided, and pressure energy meets the pressure requirements of leak locator leak detection mouth, this aperture is compared with original current-limiting apparatus, size is more prone to control, standardized product series can be made, select for different leak locator in actual mechanical process, decrease the uncertainty of original current-limiting apparatus.The kapillary that this fixed measure aperture and routine use is compared with permeable material has better stability, and flow through delay time obviously reduces, and easy for installation, and shop characteristic is good.
Selecting of solenoid valve, adopt the low-voltage direct solenoid valve of 12V, can reduce electromagnetic interference (EMI), the leak rate index of valve is better than 1 × 10-7Pa.m3/s, avoids leaking and causes the impact of leak detection mouth pressure change on the test sampling process of satellite integral leakage.
The present invention is used for the sampling process of satellite integral leakage test leak locator, and be convenient to the automatic sampling realizing integral leakage test process, compared with prior art, sampling process, by manually changing solenoid control into, is convenient to the robotization realizing test process.
Claims (5)
1. for the sampler of satellite integral leakage test leak locator, comprise valve body, fixed measure aperture and gas solenoid valve and sample pneumoelectric magnet valve, the part connecing leak detection mouth is provided with in the middle of valve body, the part connecing leak detection mouth is made up of the main channel on top and two sample tap passages of bottom, be connected with the leak detection mouth of standard helium mass spectrometer leak detector above main channel and fixed measure aperture is set in main channel, two sample tap passages are connected respectively on gas solenoid valve and sample pneumoelectric magnet valve, valve body both sides are respectively arranged with two gas mouths and two sample gas ports of one-in-and-one-out, they to be assembled respectively on a passage and are communicated on corresponding gas solenoid valve and sample pneumoelectric magnet valve, the spool of gas solenoid valve moves up, cut off the path of gas mouth and sample tap, otherwise open the path of gas mouth and sample tap, complete the sampling process of gas, the spool of sample pneumoelectric magnet valve moves up, and cuts off the path of sample gas port and sample tap, otherwise opens the path of sample gas port and sample tap, complete the sampling process of sample gas.
2. sampler as claimed in claim 1, two gas mouths arrange the turnover being used to provide calibrating gas.
3. sampler as claimed in claim 1, two sample gas ports arrange the turnover being used to provide gas to be tested.
4. the sampler as described in any one of claim 1-3, wherein, the diameter of fixed measure aperture is 10 μm ~ 20 μm.
5. the sampler as described in any one of claim 1-3, wherein, gas solenoid valve and sample pneumoelectric magnet valve are the low-voltage direct solenoid valve of 12V, and the leak rate index of valve is less than 1 × 10
-7pa.m
3/ s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210254607.3A CN102818679B (en) | 2012-07-23 | 2012-07-23 | Sampling device used in satellite total leak rate testing leak detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210254607.3A CN102818679B (en) | 2012-07-23 | 2012-07-23 | Sampling device used in satellite total leak rate testing leak detector |
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| CN102818679A CN102818679A (en) | 2012-12-12 |
| CN102818679B true CN102818679B (en) | 2014-12-31 |
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| CN201210254607.3A Expired - Fee Related CN102818679B (en) | 2012-07-23 | 2012-07-23 | Sampling device used in satellite total leak rate testing leak detector |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089745B (en) * | 2014-07-30 | 2017-06-16 | 北京卫星环境工程研究所 | The test of satellite integral leakage is with picking and placeing sampling device and pick and place sample scaling method |
| CN106443098A (en) * | 2016-09-27 | 2017-02-22 | Tcl王牌电器(惠州)有限公司 | Drive control device and test equipment |
| CN107543665B (en) * | 2016-11-04 | 2019-05-03 | 北京卫星环境工程研究所 | Lossless atmosphere is depressured vacuum gas switching device |
| CN107543666A (en) * | 2016-11-22 | 2018-01-05 | 北京卫星环境工程研究所 | external leak rate test device |
| CN107796663A (en) * | 2017-09-26 | 2018-03-13 | 无锡英罗唯森科技有限公司 | Sampler and its application method |
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