Tightness test device for nuclear power plant containment mechanical penetrations

Abstract

The invention relates to a sealing test device for a mechanical penetrating piece of a containment shell of a nuclear power plant, which is used for a leak rate test of an isolation valve of a mechanical penetrating piece of the containment shell of a nuclear power plant. The present invention combines the three basic principles of the sealing performance test of the containment mechanical penetrating parts of the current Chinese nuclear power plant, reasonably selects and matches the basic test equipment required by the three basic principles to form a complete device system, and the test has a wide range of applications. The device is highly operable. In the form of a mobile trolley case, the components of the test device are reasonably distributed and combined, which is small in size and easy to carry. Relevant instruments that need to be calibrated are in the form of clamp-type quick connection with the system as a whole, which is convenient for disassembly and instrument inspection. It is easy to carry, easy to operate, and strong in practicability, which can greatly reduce the operating time of the test, thereby reducing the time of the experimental operator in the radiation control area, and reducing the risk of the operator being exposed to radiation hazards.

Description

technical field [0001] The invention relates to a sealing test device for a mechanical penetrating piece of a containment shell of a nuclear power plant, which is used for a leak rate test of an isolation valve of a mechanical penetrating piece of the containment shell of a nuclear power plant. Background technique [0002] The containment of the nuclear power plant has the function of radioactive shielding. In the event of a large breach in the primary circuit and a large breach in the steam pipeline of the secondary circuit, etc. [0003] Therefore, the airtightness is guaranteed under working conditions to prevent the release of radioactive substances into the environment and protect the safety of staff and the public. The pipelines entering and leaving the containment should be isolated during the above accidents to ensure the integrity of the containment. Generally, the isolation door is on the outside of the containment, and the isolation door or check door is on the ...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the current problems of various sealing test devices, loose structures, uneasy portability and inconvenient operation of the containment mechanical penetrating parts of nuclear power plants, the present invention provides a nuclear power plant containment mechanical Penetration tightness test device

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