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Gas detection instrument

A gas detector and gas detection technology, applied in the field of gas detectors, can solve the problems of increased equipment cost, low efficiency, cumbersome operating procedures, etc., and achieve the effects of reducing the internal volume of the gas circuit, low cost, and simple equipment structure

Pending Publication Date: 2018-03-30
HAINAN UNICAN SCI & TECH INNOVATION INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method requires superb sampling techniques, and the operation procedures are cumbersome and inefficient, or a high-precision trace gas sampling device needs to be configured, which increases equipment costs

Method used

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Embodiment Construction

[0031] In order to further illustrate the technical means and beneficial effects of the present invention, the specific implementation methods of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments:

[0032] The structural connection of the gas detector is as attached figure 1 As shown in , the gas detector includes a gas detection circuit, which is composed of a chromatographic column 8 connected to a gas detector 9, and an inert gas is connected to the front end as a carrier gas. The chromatographic column 8 is a capillary chromatographic column; the gas detector 9 is a thermal conductivity cell detector, which is connected with a same carrier gas as a reference gas path at the same time; the chromatographic column 8 and the thermal conductivity cell detector 9 are arranged in the heating module , Heated by electric heating wire, and covered with insulation cotton for heat preservation, so that the g...

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Abstract

The invention discloses a gas detection instrument and belongs to the technical field of detection equipment. The gas detector comprises a gas detection loop which is formed by connecting a chromatographic column with a gas detector, a gas sample is fed in to separate gas components by carrier gas and detected, and corresponding signals are output; the gas detection instrument further comprises agas sample circulation loop which is formed by serially connecting a gas injection module, a circulating gas pump and a gas storage container through a gas pipe and forms a circle; the gas detection instrument further comprises a six-way valve, a quantitative tube is connected between two interfaces, and the rest four interfaces are connected at the front end of the gas detection loop and in the gas sample circulation loop to parallelly connect the gas sample circulation loop with the gas detection loop; the quantitative tube is connected into the gas sample circulating loop by switching the six-way valve for quantitative sampling; after the quantitative tube is filled with a gas sample, the quantitative tube is connected into the gas detection loop by switching the six-way valve; the carrier gas sends the gas sample of the quantitative tube into the gas detection loop for detection.

Description

technical field [0001] The invention relates to a gas detector and belongs to the technical field of gas detection equipment. Background technique [0002] Chromatographic analysis is a commonly used gas qualitative and quantitative method. For example, gas chromatography (GC) sends the gas sample into the chromatographic column through an inert gas different from the gas sample components as the carrier gas. Due to the adsorption of each gas component in the chromatographic column The desorption ability is different, and different components can be separated; when each component flows out of the chromatographic column and enters the detector, the detector can convert the sample component into an electrical signal and record the chromatogram in real time, according to the peak position and peak intensity of the spectrum and other information for qualitative and quantitative analysis of gas samples. [0003] However, in actual detection work, it is difficult to collect all t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/20
CPCG01N30/20G01N2030/201
Inventor 潘能乾曹唱
Owner HAINAN UNICAN SCI & TECH INNOVATION INST CO LTD
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