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Volatile chlorine gas detection system and detection method in experimental environment

An experimental environment and detection system technology, applied in the field of environmental safety, can solve the problems of long detection cycle, expensive equipment, high cost, etc., and achieve the effects of short response time, good health protection and good stability

Inactive Publication Date: 2017-01-04
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to overcome the shortcomings of long detection period, high cost and expensive equipment in the gas detection method in the prior art, and provides a volatile chlorine gas detection system in the experimental environment that can quickly and accurately detect the concentration of chlorine gas in the laboratory environment and Detection method

Method used

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  • Volatile chlorine gas detection system and detection method in experimental environment
  • Volatile chlorine gas detection system and detection method in experimental environment
  • Volatile chlorine gas detection system and detection method in experimental environment

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Experimental program
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Embodiment 1

[0077] Such as figure 1 , figure 2The illustrated embodiment is a detection system for volatile chlorine gas in an experimental environment, including a controller 1, a storage device 25, a base plate 2, a gas chamber 3 with a rectangular cross section on the base plate, a tail gas treatment device 28 and a support frame 4, The guide structure 5 and the transverse screw rod 6 arranged on the support frame;

[0078] Such as figure 2 As shown, the top of the inner wall of the air chamber is provided with ultrasonic generator 29 and five fans 7 for blowing downward, and the inner and outer walls of the air chamber are successively provided with two layers of gas-sensitive membranes 8 for supporting the gas-sensitive membranes. A metal mesh 9 made of heating wires, a horizontal partition 10 located at the lower part of the metal mesh and separating the air chamber into upper and lower parts, the bottom of the air chamber is provided with a supporting plate 11, a detection head...

Embodiment 2

[0122] In embodiment 2, comprise all structure and step part of embodiment 1, also include in embodiment 2 such as figure 1 The shown temperature sensor 18 and humidity sensor 19 arranged on the detection head; both the temperature sensor and the humidity sensor are electrically connected to the controller.

[0123] Embodiment 2 uses step 200 among the embodiment 1 of following steps:

[0124] (7-1) The controller controls the solenoid valves on the inlet pipe and the outlet pipe to open, and fills the lower part of the air chamber with nitrogen through the inlet pipe, and the temperature sensor, humidity sensor, MQ-2 sensor, MQ-135 sensor and chlorine gas Sensor cleaning for 5 to 10 minutes;

[0125] (7-2) Fill the gas chamber with laboratory gas with a known chlorine concentration of S through the inlet pipe, and the tail gas treatment device processes the laboratory gas output from the outlet pipe; the flow meter detects the laboratory gas flow rate, and the gas-sensitive ...

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Abstract

The invention discloses a detection system for volatized chlorine in experiment environment and a detection method. The detection system comprises a controller, a memorizer, a bottom plate, and a gas chamber with a rectangular cross section, a tail gas processing device and a bracing frame which are disposed on the bottom plate, and a guiding structure and a transverse screw rod which are disposed on the bracing frame; the top of the inner wall of the gas chamber is provided with multiple fans used for an ultrasonic wave emitter and used for blowing downwards; and the inner sidewall of the gas chamber is successively provided with at least two layers of gas sensitive membranes, a metal mesh and a horizontal plate from top to bottom, the metal mesh is used for supporting the gas sensitive membrane and is composed of a heating wire, and the horizontal plate is disposed under the metal mesh and divides the interior of the gas chamber into an upper part and a lower part. The detection system possesses the characteristics of being high in sensitivity, good in stability and short in response time, possessing relatively good selectivity on chlorine, being capable of detecting out trace chlorine with relatively low concentration, and effectively guaranteeing health of human body.

Description

technical field [0001] The invention relates to the technical field of environmental safety, in particular to a detection system and a detection method for volatile chlorine gas in an experimental environment capable of rapidly and accurately detecting the concentration of chlorine gas in a laboratory environment. Background technique [0002] The chemical formula of chlorine gas is Cl 2 , yellow-green under normal temperature and pressure, a poisonous gas with a strong pungent smell, higher density than air, soluble in water, easy to compress, and can be liquefied into golden yellow liquid chlorine. It is one of the main products of the chlor-alkali industry and can be used as Strong oxidants. When chlorine gas is mixed with hydrogen gas with a volume fraction of more than 5%, there may be a danger of explosion when exposed to strong light. Chlorine can undergo substitution reaction and addition reaction with organic matter to generate various chlorides. Chlorine was use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 施小平朱义族连广浒阚相如
Owner ZHEJIANG GONGSHANG UNIVERSITY