Nuclear power station personnel airlock

Abstract

The invention discloses a nuclear power station personnel airlock. The nuclear power station personnel airlock comprises a cylinder, a first end plate assembly, a second end plate assembly, a first sealing door, a shielding door and a second sealing door; the first end plate assembly is arranged at the end port of the first end of the cylinder; a first door opening is formed in the first end plateassembly; the second end plate assembly is arranged at the end port of the second end of the cylinder; a second door opening is formed in the second end plate assembly; the first sealing door is arranged on one side of the first end plate assembly and can be opened and closed on the first door opening; the shielding door is arranged on one side of the first end plate assembly and can be opened and closed on the first door opening; and the second sealing door is arranged on the second end plate assembly and can be opened and closed on the second door opening. According to the nuclear power station personnel airlock, the sealing doors and the shielding door in corresponding containment housings are independently arranged, so that the problem that the design standard of the personnel airlockcannot be met due to weight and size limitations of integrated sealing and shielding arrangement is solved, and the design standard of the personnel airlock is capable of being met when the nuclear power station personnel airlock has the functions of sealing and radiation shielding, and the nuclear power station personnel airlock is ensured to have sufficient passing capacity to meet the passingrequirement.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a personnel gate of a nuclear power plant. Background technique [0002] Common nuclear power plant personnel gates only have a sealing function, and some nuclear power plants (such as small offshore reactors) have relatively high radiation doses at the containment due to the small size of the reactor. shielding function. However, existing personnel locks do not provide sufficient radiation shielding capability to meet the requirements of some nuclear power plants, such as small offshore reactors. [0003] Patent CN201811027578.0 discloses a shielded and sealed dual-function personnel gate, and patent CN201811415067.6 discloses a nuclear shielded and sealed door. Although these two patents have realized the dual functions of shielding and sealing, these two patents adopt the integration of shielding and sealing Design, in which shielding materials are filled in the door f...

AI Technical Summary

Problems solved by technology

However, existing personnel locks do not provide sufficient radiation shielding capability to meet the requirements of some nuclear power plants such as small offshore reactors

[0003] Patent CN201811027578.0 discloses a shielded and sealed dual-function personnel gate, and patent CN201811415067.6 discloses a nuclear shielded and sealed door. Although these two patents have realized the dual functions of shielding and sealing, these two patents adopt the integration of shielding and sealing Design, in which shielding materials are filled in the door frame and door panel of the inner sealing door of the personnel gate, resulting in a substantial increase in the thickness and weight of the inner sealing door panel. In order to meet the requirements for space layout and strength of the transmission parts, the sealing door can only be made very small. As a result, the passing ability is poor, and it can only barely pass through for personnel, and it does not have the ability to pass through for small equipment

However, the personnel gate design standard requires that personnel and small equipment can pass through, so the above-mentioned shielding + sealing integrated design actually does not meet the personnel gate design standards

If the passage capacity of the personnel gate is too small, small equipment can only pass through the equipment gate, and there is a risk of falling objects, threatening the safety of reactor pressure vessels and other equipment

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