Leakage test device for mechanical penetration piece of nuclear power plant containment vessel

Abstract

The invention relates to a leakage test device for a mechanical penetration piece of a nuclear power plant containment vessel. The leakage test device is used for performing a test on the leakage rate of an isolation valve of the mechanical penetration piece of the nuclear power plant containment vessel. Combined with three basic principles of the leakage test of the mechanical penetration piece of the nuclear power plant containment vessel in China at present, basic test apparatuses required by the three basic principles are selected and matched reasonably to form a complete device system, the test application range is wide, and the device is strong in operability. By means of a mode of a movable draw-bar box, parts of the test device are distributed and combined reasonably, so that the test device is small in size and convenient to carry. Relevant instruments needing testing are quickly connected with the whole system device in a clamping mode, so that assembly and disassembly are simple, and testing of the instruments is convenient. The leakage test device for the mechanical penetration piece of the nuclear power plant containment vessel is convenient to carry, simple in operation and strong in practicability. By means of the leakage test device for the mechanical penetration piece of the nuclear power plant containment vessel, operation time of the test is greatly shortened, time spent by experiment operating personnel in a radiation control zone is shortened, and risks of radiation hazards suffered by the operating personnel are reduced.

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 nuclear power plants has the function of radioactive shielding, which ensures its sealing under accident conditions such as large breaches in the primary circuit and secondary circuit steam pipelines, preventing the release of radioactive substances into the environment, and protecting 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 inside. [0003] In order to ensure the tightness of the valve, ...

AI Technical Summary

Problems solved by technology

[0004] 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

Images