JPS59142796U

JPS59142796U - Device to prevent sodium vapor from entering the reactor guide passage in a sodium-cooled nuclear reactor

Info

Publication number: JPS59142796U
Application number: JP1983037636U
Authority: JP
Inventors: 高橋　末広
Original assignee: 富士電機株式会社
Priority date: 1983-03-16
Filing date: 1983-03-16
Publication date: 1984-09-25

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はナトリウム冷却型原子炉の概要構成図、第２図
燃料交換機のホールドダウン軸を実施対象したこの考案
の実施例の使用状態図、第３図は第２図における要部の
拡大構造断面図である。１・・・炉心、２・・・炉容器、３・・・回転プラグ、
６・・・炉内案内通路としてのホールドダウン軸、９・
・・栓体、１０・・・ハンドリングヘッド、１１・・・
円板、１２・・・栓本体、１３・・・基台部、１５・・
・段付部。Figure 1 is a schematic configuration diagram of a sodium-cooled nuclear reactor, Figure 2 is a usage diagram of an embodiment of this invention targeted at the hold-down shaft of a fuel exchanger, and Figure 3 is an enlarged structure of the main parts in Figure 2. FIG. 1... Reactor core, 2... Reactor vessel, 3... Rotating plug,
6...Hold-down shaft as a guide passage in the furnace, 9.
...Plug body, 10...Handling head, 11...
Disc, 12... Stopper body, 13... Base part, 15...
・Stepped part.

Claims

[Scope of utility model registration request]

(1)) In a reactor guide passage constructed in the reactor that spans the inside and outside of the reactor and has its lower end immersed below the sodium liquid level in a nuclear reactor that uses IJum as the primary coolant, the liquid level of sodium in the reactor is controlled. An in-core guide passage in a sodium-cooled nuclear reactor, characterized in that a stopper for preventing sodium vapor intrusion, which is loaded and pulled out by an operation from outside the reactor, is housed in the guide passage in the middle of the guide passage, aligned with the position of the reactor. Device to prevent sodium vapor from entering.

(2) Scope of Utility Model Registration Claims In the sodium vapor intrusion prevention device according to claim 1, the handling head portion has a plug at the top, and a plurality of circles whose external dimensions are determined according to the diameter of the fuel guide passage. It is an integral assembly of the labyrinth-structured plug body made of laminated plates and the base part, and is mounted on a stepped part formed in the middle of the guide passage corresponding to the height of the sodium liquid level in the furnace. 1. A device for preventing sodium vapor from entering a guide passageway in a reactor in a sodium-cooled nuclear reactor.