Continuous pressure variable sampling device and method for Archimedes spiral mass spectrometer

Abstract

The invention discloses a continuous pressure-variable sampling device for an Archimedes spiral mass spectrometer, which includes a motor and a base. The metal pipe shaft of the channel, the metal pipe shaft of the gas channel rotates through the first bracket and the second bracket in turn, the metal tube shaft of the gas channel is located above the first bracket, and the combined gear is snapped, and the upper end of the metal tube shaft of the gas channel runs through the second bracket. The gas channel disc is welded behind the bracket; the drive motor drives the gas channel disc to rotate and translate the translation plate through a series of reduction transmission systems, so that the air inlet on the translation plate is always connected with one of the Archimedes spiral grooves, By changing the gas path length and cross-sectional area of ​​the Archimedes spiral groove, it has the ability of high-precision sampling and analysis of a wide range of variable pressure gases; the invention has high sampling accuracy and has the ability of continuous online sampling of the analyzed gas .

Description

technical field [0001] The invention belongs to the technical field of gas analysis, in particular to an Archimedes spiral mass spectrometer continuous variable pressure gas sampling device and method. Background technique [0002] Mass spectrometer, also known as mass spectrometer, is an instrument for analyzing and detecting different components in gases. It is a kind of instrument that separates and detects the composition of substances according to the mass difference of atoms, molecules or molecular fragments based on the principle that charged particles can be deflected in the electromagnetic field. Mass spectrometer measurement technology has been widely used in pharmaceuticals, food, medicine, geology, steel production, vacuum system leak detection, environmental simulation, manned spaceflight and other industrial fields and scientific and technological research. all play an important role. [0003] The analysis chamber of the mass spectrometer must work in a speci...

AI Technical Summary

Problems solved by technology

Existing mass spectrometer gas sampling methods and devices cannot meet the requirements of high-precision continuous sampling under the condition of gas pressure changes, which restricts the development and application of gas analysis mass spectrometers, and a new gas sampling device and method are urgently needed

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