Sampling device for semiconductor refrigeration type headspace test

Abstract

The invention relates to a sampling device for a semiconductor refrigeration type headspace test. The sampling device comprises an air pump, a sampling pipeline, a temperature probe, a headspace bottle, a headspace bottle arrangement component, a heat dissipation plate, a semiconductor cooling stack, a heat dissipation component, a fan, a temperature control switch and a direct-current power supply, wherein the air pump is connected with the headspace bottle; one end of the sampling pipeline is emptied, and the other end of the sampling pipeline is inserted into the headspace bottle; one end of the temperature probe is used for detecting the temperature of the sampling pipeline, and the other end of the temperature probe is connected with the temperature control switch; the headspace bottle is arranged in the headspace bottle arrangement component; the heat dissipation plate is positioned on one side of the sampling pipeline; the semiconductor cooling stack is arranged between the heat dissipation plate and the heat dissipation component, and is connected with the temperature control switch; the fan is arranged on one side of the heat dissipation component; and the temperature control switch is connected with the direct-current power supply. Compared with the prior art, the sampling device has the advantages of safety, reliability, wide applicability range, high efficiency and the like.

Description

technical field [0001] The invention relates to a adopting device, in particular to a sampling device for headspace testing, which uses semiconductor refrigeration as a cold source. Volatile (flammable and explosive) gases can be condensed into liquids under semiconductor refrigeration conditions, and samples can be collected for analysis. Background technique [0002] Those with dangerous properties such as explosion, flammability, poison, corrosion, and radioactivity, which can cause combustion, explosion, and accidents such as personal casualties and property losses under certain conditions during transportation, loading and unloading, production, use, storage, and storage Chemical substances are collectively referred to as chemical hazardous substances. With the development of science and technology, people's safety awareness of production environment and living environment is getting deeper and deeper. More and more attention has been paid to environmental protection....

AI Technical Summary

Problems solved by technology

For the collection of volatile (flammable and explosive) gases, most of them are adsorbed by adsorbents, and then analyzed and measured by gas chromatography or gas spectrometer after analysis. This method has poor safety, small scope of application, and low efficiency.

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