Sampling device used in satellite total leak rate testing leak detector

A sampling device and a technology of total leak rate, applied in the direction of liquid tightness measurement using liquid/vacuum degree, etc., can solve the problems of cumbersome, difficult to automate, unstable flow of flow limiting device, etc., easy to control the size, reduce unnecessary The effect of certainty
CN102818679AInactive Publication Date: 2012-12-12BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
Publication Date
2012-12-12
Estimated Expiration
Not applicable · inactive patent

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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.
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Description

technical field

[0001] The invention relates to a sampling device for a satellite total leak rate test leak detector, in particular to an electric sampling process capable of completing the leak detector, and jointly completing the sampling of the total leak rate test with a standard helium mass spectrometer leak detector device, and finally realize the automation of the total leak rate testing process. Background technique

[0002] With the continuous development of aerospace technology, the demand for automation is getting higher and higher. The previous manual testing work needs to be improved, and the satellite total leak rate test also needs to be automated. The sampling system, the key device of the total leak rate test, restricts the automation of the test. There is an urgent need to develop a sampling device that is easy to automate.

[0003] The schematic diagram of the sampling device structure of the existing leak detector is as follows: figure 1 shown. [0004...

Claims

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