Concentration measuring system of hydrogen in containment vessel

A technology of concentration measurement and containment, which is applied in the field of hydrogen concentration measurement system in containment, can solve problems such as poor reliability, complex system composition, and unsafety, and achieve the effects of avoiding combustion and explosion, simple system composition, and simple algorithm
CN102928463AActive Publication Date: 2013-02-13718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
Publication Date
2013-02-13

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Abstract

The invention discloses a concentration measuring system of hydrogen in a containment vessel, belonging to the technical field of concentration measurement of flammable and explosive gasses. The concentration measuring system comprises a temperature acquisition unit, a signal processing unit and a hydrogen concentration display unit, wherein the signal processing unit comprises an analog value input module, a CPU (Central Processing Unit) module and an analog value output module; and the temperature acquisition unit, the analog value input module, the CPU module, the analog value output module and the hydrogen concentration display unit are connected in sequence. The concentration measuring system is low in energy consumption, simple to assemble and capable of safely and reliably realizing continuous measurement of concentration of hydrogen in the containment vessel under accident conditions of a nuclear power plant.
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Description

technical field

[0001] The invention relates to a hydrogen concentration measurement system in a containment vessel, which belongs to the technical field of concentration measurement of inflammable and explosive gases. Background technique

[0002] A large amount of hydrogen will be produced under accident conditions in nuclear power plants. The source of hydrogen is: 1) In the early stage of the accident, zirconium-water reaction produces hydrogen at a high rate. 2) In the middle and late stages of the accident, the radiation decomposition of water, the reaction of core melt and concrete will also produce a large amount of hydrogen. The accumulation of a large amount of hydrogen may make the hydrogen concentration in the containment vessel exceed the explosion limit of 4%, and there is a danger of explosion. In order to avoid hydrogen deflagration accidents and destroy the integrity of the containment, it is necessary to build a hydrogen measurement system to monitor the h...

Claims

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