Sealing door system of underground nuclear power station

Abstract

The invention discloses a sealing door system of an underground nuclear power station. The sealing door system comprises a high-radioactivity horizontal chamber, an isolation transitional chamber and a low-radioactivity horizontal chamber which are sequentially connected, wherein a first air-tight door is arranged between the high-radioactivity horizontal chamber and the isolation transitional chamber; a second air-tight door is arranged between the isolation transitional chamber and the low-radioactivity horizontal chamber; a first penetrating member tube which is communicated with the high-radioactivity horizontal chamber and the isolation transitional chamber is arranged above the first air-tight door; and a second penetrating member tube which is communicated with the isolation transitional chamber and the low-radioactivity horizontal chamber is arranged above the second air-tight door. The sealing door system can effectively isolate-radioactivity pollution of spaces in the horizontal chambers with different radioactivities while ensuring normal communication, and can monitor parameters such as temperature, pressure, air humidity and radioactive levels, so as to provide an environmental reference basis for the monitoring and rescue during accidents.

Description

technical field [0001] The invention relates to nuclear power technology, in particular to an underground nuclear power plant airtight door system. Background technique [0002] After the Fukushima nuclear accident, the safety requirements for nuclear power plants have been further enhanced. Putting the nuclear power plant underground can increase the inherent safety of the nuclear power plant and increase the radiation protection barrier of the nuclear power plant. After the nuclear power plant is placed underground, it involves the isolation and communication between the underground chambers of the nuclear power plant. Especially the isolation and connection between the chamber space with high radioactivity level and the chamber space with low radioactivity under accident conditions. [0003] The existing isolation doors are simple in design (such as a radiation-proof isolation door for radiology department in China, patent number: CN201520986675.8; electric isolation do...

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Problems solved by technology

[0003] The existing isolation doors are simple in design (such as a radiation-proof isolation door for radiology department in China, patent number: CN201520986675.8; electric isolation door in China, patent number: CN201210000862.5), and it is easy to cause chamber space during use. The radioactive cross-contamination between them cannot meet the requirements of underground nuclear power plants

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