New drift bottle

Abstract

The invention discloses a new drift bottle which comprises a gas inlet region, an ionization region, a drift region and a gas outlet region, wherein a circulating gas inlet pipe is arranged at the top of the gas inlet region; the tail of the gas outlet region is connected with a gas outlet pipe; the gas inlet region comprises a first die carrier, a second die carrier and a die carrier fixing piece, wherein the first die carrier and the second die carrier are hollow and cylindrical; a diaphragm is arranged at the inlet of the top end of the first die carrier; a flare opening is arranged between the gas inlet region and the ionization region; the ionization region comprises a nonmetallic outer cylinder and an ionization well outer cylinder; an ionization well guide pipe is arranged in the ionization well outer cylinder; a lead is embedded in the nonmetallic outer cylinder; the drift region comprises a plurality of metallic drift rings and a plurality of nonmetallic insulating rings; a front grid mesh is arranged between the ionization region and the drift region; the metallic drift rings and the nonmetallic insulating rings are connected by welding and are arranged at intervals; a back grid mesh is arranged between the drift region and the gas outlet region; a Faraday disk is arranged in the gas outlet region; a conducting wire is inserted into the Faraday disk; and a shielding cylinder is arranged at the periphery of the conducting wire. The invention has the advantages of compact structure, long service life and accurate detection.

Description

Technical field: [0001] The invention relates to a detection device, in particular to a new type of drift bottle, which is a new type of gas phase analysis and detection instrument, which detects trace chemical species by measuring the drift rate of gaseous characteristic ions in a weak electric field. Background technique: [0002] The drift bottle can also be called the drift tube. The important parts in the drift bottle are the metal drift ring and the non-metal insulating ring. At present, the metal drift ring is integral, while the non-metal insulating ring is semi-solid, and the two semi-solid The non-metallic insulating ring can surround the metal drift ring, and the two non-metallic insulating rings and the metal drift ring and the non-metallic insulating ring are connected by glue, but when the drift bottle operates at a high temperature of 250 ° C, Sealing is more difficult and easy to crack, so it is easy to leak air, which directly affects the test results. At t...

AI Technical Summary

Problems solved by technology

[0002] The drift bottle can also be called the drift tube. The important parts in the drift bottle are the metal drift ring and the non-metal insulating ring. At present, the metal drift ring is integral, while the non-metal insulating ring is semi-solid, and the two semi-solid The non-metallic insulating ring can surround the metal drift ring, and the two non-metallic insulating rings and the metal drift ring and the non-metallic insulating ring are connected by glue, but when the drift bottle operates at a high temperature of 250 ° C, Sealing is difficult and easy to crack, so it is easy to leak air, which directly affects the test results

At the same time, the front grid and the rear grid in the drift bottle are composed of braids, which are easily deformed after being heated, which will affect signal transmission and change the test results

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