Nuclear power plant personnel gate

Abstract

The invention discloses a personnel gate of a nuclear power plant, which comprises a cylinder body; a first end plate assembly, which is arranged at a port at the first end of the cylinder body, and a first door opening is arranged on the first end plate assembly; a second end plate assembly, It is arranged at the port of the second end of the cylinder, and the second end plate assembly is provided with a second door opening; the first airtight 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 The 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 airtight door is arranged on the second end plate assembly and can be opened and closed on the second door opening. The personnel gate of the nuclear power plant of the present invention is independently provided with the airtight door and the screen door corresponding to the containment, which solves the problem that the integrated design of the seal and shield cannot meet the design standards of the personnel gate due to the weight and size restrictions. At the same time, it can meet the design standards of personnel gates and ensure that the gates have sufficient passing capacity to meet the passing requirements.

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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