Rapid connection device of straight pipe helium mass spectrometer leak detection

Abstract

The invention relates to a rapid connection device of straight pipe helium mass spectrometer leak detection. The device comprises a pipeline connecting piece, a sealing rubber washer, a snap ring assembly, a bolt and a flat washer. One end of the pipeline connecting piece is a vacuum-standard quick-release connector connection disk and the other end is a snap ring installation disk. The connection snap ring assembly comprises a movable semi-ring and a fixed semi-ring. The two semi-rings are connected together through a semi-ring joint hinge. The fixed semi-ring is connected to and fixed on the pipeline connecting piece through the bolt and the movable semi-ring can rotate about the semi-ring joint hinge. By using the apparatus, a vacuum system connection interface does not need to be welded on the pipeline; rapid connection of a smooth straight tube and a vacuum-standard quick-release connector can be conveniently and rapidly realized without changing and processing tubing; leak detection preparation time is shortened and tubing leak detection efficiency is increased.

Description

technical field [0001] The invention belongs to the technical field of leak detection, and in particular relates to a quick connection device for helium mass spectrometer leak detection, in particular to a helium mass spectrometer leak detection device with smooth and non-connecting devices at both ends. A device that connects straight pipes to standard quick-release connectors used in vacuum helium mass spectrometry leak detection systems. Background technique [0002] At present, there are many sealed pipelines in the spacecraft and its space environment simulation test equipment, which have high gas leakage rate index requirements. In order to improve the pass rate of the gas leakage rate of the finished pipeline, it is necessary to conduct a helium mass spectrometer leak rate test on the used pipeline before and during the pipeline processing. At present, a method commonly used for leak detection of straight pipes is the vacuum injection method helium mass spectrometry ...

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Problems solved by technology

figure 1 It is a schematic diagram of a straight tube vacuum injection method helium mass spectrometry leak detection system in the prior art, wherein, in the existing vacuum injection method helium mass spectrometry leak detection, firstly, the pipeline 104 to be detected is connected to the vacuum helium mass spectrometer leak detector 101, Vacuum standard quick-release connectors 106 (clamping type GB / T4982-2003 and tightening type GB / T4983-2003) are generally used for connecting pipelines and connecting interfaces of vacuum helium mass spectrometer leak detectors, and auxiliary pumps 102 and auxiliary valves are also provided 103 has provided a helium source 105 for helium. However, the pipe is usually a smooth straight pipe before and during the processing. The two ends of the straight pipe are smooth and there are no fixed parts. The connection is difficult and cannot be directly connected to the vacuum standard quick-release connector.

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