Gas sampling bag leakage detection device and detection method

Abstract

The invention provides a gas sampling bag leakage detection device and a detection method. The detection device comprises a loading device arranged on the sampling bag and a shift detector for detecting a falling height or a downward rotation angle of the loading device. The gas sampling bag leakage detection device provided by the invention may accelerate, based on the loading device in a vertical direction, detect leakage collapses and deflation of the sampling bag which has a certain degree of gas leakage, and can obviously improve leakage detection efficiency. The shift detector measures leakage conditions of the sampling bag based on mechanical, electronic, and optical principles without interferences from environmental noises in an experiment lab and influences of personnel's subjective consciousness, and the result is accurate. The leakage detection process can be performed synchronously with an aging cleaning process or sample loading analysis process of the gas sampling bag without influencing conventional procedures and schedules of gas analysis and detection.

Description

technical field [0001] The invention belongs to the field of gas collection and analysis, and in particular relates to a gas sampling bag leakage detection device and detection method. Background technique [0002] When collecting and analyzing the gas components emitted by samples such as automotive interior materials, parts, and assemblies, sampling bags made of plastic films, metal films, composite films, and paper are often used as gas containers. Fill or put the sample to be analyzed into the bag through the opening reserved on the sampling bag, and then close the opening to realize gas preservation and subsequent analysis. During storage or transportation, the airtightness of the sampling bag directly affects the subsequent analysis of gas concentration or composition. Therefore, in order to ensure the validity of the gas analysis results, it is necessary to detect the leakage of the sampling bag. [0003] At present, the commonly used sampling bag leakage detection ...

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Problems solved by technology

[0005] In view of this, the present invention aims to propose a gas sampling bag leak detection device to solve the problem of existing sampling bag leak detection, where it is difficult to observe whether there is a sign of air leakage and expansion, or it is difficult to hear the sound and observation of the air leakage of the sampling bag. Whether there is air leakage, long time consumption and low efficiency

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