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Gas concentration analysis method, device and gas analyzer in containment vessel

A gas concentration and analysis method technology, applied in the field of gas analyzers, can solve the problem of inaccurate gas concentration analysis

Active Publication Date: 2016-01-13
CHONGQING CHUANYI ANALYZER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can solve the problem of inaccurate analysis of the gas concentration in the containment after the accident caused by dry sampling after the containment accident

Method used

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  • Gas concentration analysis method, device and gas analyzer in containment vessel
  • Gas concentration analysis method, device and gas analyzer in containment vessel
  • Gas concentration analysis method, device and gas analyzer in containment vessel

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Embodiment Construction

[0060] Firstly, the principle of the present invention will be described.

[0061] Taking the containment of a nuclear power plant as an example, the change of the atmosphere after the accident has obvious characteristics, that is, the pressure change is only affected by temperature, hydrogen production, and water vapor production, and the containment is a closed environment with a fixed volume. For the containment with the above characteristics, the humidity compensation model can be established according to the ideal gas state equation, so as to perform humidity compensation for the measured gas. And we verified the feasibility of this idea through experimental verification. The following is a detailed introduction to the establishment process of the humidity compensation model.

[0062] 1. First of all, in the follow-up, we adopted the following abbreviations.

[0063] P 1 Indicates the pressure of the containment gas (ie: atmosphere) under normal conditions, P 2 Indica...

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Abstract

The invention provides a method and device for analyzing concentration of gas in a containment and a gas analysis instrument. The method comprises conducting humidity compensation on tested gas when the concentration of the tested gas in the containment is analyzed after an accident occurs to the containment. The gas analysis instrument comprises a temperature measurement device, a pressure measurement device, a sampling device, a concentration measurement device and a humidity compensation device. According to the invention, as humidity compensation is adopted, the concentration of gas in the containment can be accurately acquired after the accident occurs to the containment.

Description

technical field [0001] The invention relates to gas monitoring, in particular to a gas concentration analysis method, device and gas analyzer in a containment vessel (especially: nuclear power plant containment vessel). Background technique [0002] In the prior art, when analyzing the atmosphere after a containment accident, the most widely used dry sampling method is generally used, that is, a series of operations such as filtering, cooling, dehumidifying, and pressure regulating the sample gas. However, almost all dry sampling systems do not consider the influence of the removal of water vapor on the measured value. are very small, and have limited influence on the measurement results; on the other hand, when the water vapor in the sample is removed, the corresponding proportion of other components will increase, and the measured value is higher than the actual value, which is generally accepted in terms of safety control. [0003] However, in some emerging fields at pre...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/00
Inventor 邓建波封沛
Owner CHONGQING CHUANYI ANALYZER CO LTD