Safety Adjustable Irradiation Sample Plug and Basket Flange

Abstract

The invention discloses a safe and adjustable irradiation sample hole plug and a hanging basket flange, and relates to the technical field of nuclear reactor. The safe and adjustable irradiation sample hole plug comprises a body, a pressing component and a locking component. The body is provided with an accommodating groove and a sidewall, and locking through holes are formed in the sidewall. Thepressing component comprises a butting piece, a pressing rod, a guiding piece and a butting spring, the butting piece is slidably connected with the accommodating groove, an accommodating cavity is formed by surrounding of the butting piece and the accommodating groove, the pressing rod, the guiding piece and the butting spring are positioned in the accommodating cavity, and two ends of the butting spring respectively butt against the butting piece and the guiding piece. The locking component comprises a rotating piece and a locking piece, the pressing rod drives the rotating piece to rotate so as to enable the locking piece to extend from the sidewall and butt against an inner wall. The invention further provides a hanging basket flange comprising the safe and adjustable irradiation sample hole plug. The safe and adjustable irradiation sample hole plug and the hanging basket flange are simple and reliable in structures, and by the aid of a self-locking function, the safe and adjustable irradiation sample hole plug is convenient to mount and dismount during follow-up operation.

Description

technical field [0001] The invention relates to the technical field of nuclear reactors, in particular to a safety adjustable radiation sample hole plug and a hanging basket flange. Background technique [0002] An irradiation sample rack is arranged on the hanging basket cylinder body of the internal components of the pressurized water reactor. The irradiation sample rack provides an installation location for the irradiation supervision of the pressure vessel. The material of the sample in the irradiation supervision tube is exactly the same as that of the reactor pressure vessel. The irradiated samples are taken out at different stages in the reactor for mechanical performance tests. Correspondingly, a hole is opened on the flange of the hanging basket corresponding to the position of the irradiation sample holder, so as to facilitate the disassembly of the irradiation sample in the later stage, and the irradiation sample hole is blocked by a safe and adjustable irradiatio...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing pressurized water reactor irradiation sample hole plug is relatively complicated in structure

The irradiated sample hole plug with a simple structure does not have the self-locking function. After the upper reactor internals that press the irradiated sample hole plug are disassembled, the irradiated sample hole plug will be locked when the reactor safety injection test or failure occurs. The possibility of coolant rushing out of the primary circuit poses a major safety hazard

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