JPS6046096U

JPS6046096U - Anchoring device for spring assembly in nuclear fuel assembly

Info

Publication number: JPS6046096U
Application number: JP1983138459U
Authority: JP
Inventors: 茂加藤; 健治佐藤
Original assignee: Nuclear Fuel Industries Ltd
Current assignee: Nuclear Fuel Industries Ltd
Priority date: 1983-09-08
Filing date: 1983-09-08
Publication date: 1985-04-01

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図は燃料集合体の上端部分の断面図。第２図は燃料
集合体の配列状態を示す炉心の一部の平面図。第３図は
一般のばね組立体の分解斜視図。第４図イはばね組立体の従来の取付装置の一例の一部切
断側面図。同図口はねじ山の変形状態の説明図。第５図
はこの考案の実施例の一部切断分解図。第６図はピン挿
通部分の断面図。第７図はばね組立体の定着状態を示す
一部切断側面図。図中、１，１１・・・板ばね、２，１２・・・止め具、
３．１３・・・ボルト、４・・・コーナ板、５・・・コ
ーナ柱、ｌｌａ、１２ａ・・・水平頭部、ｌｌｂ・・・
通孔、１２ｂ・・・ねじ孔、１３ａ・・・頭部、１３ｂ
・・・中間軸部、１３ｃ・・・下側雄ねじ部、１３ｄ・
・・横通孔、１６・・・ピン、ｂ・・・チャンネルボッ
クス。「」」黄みＵは１ｆｆＩ３’ Ｋ　　・・Ｖ１旧口上３曾−′ｌｂ　　５FIG. 1 is a sectional view of the upper end portion of the fuel assembly. FIG. 2 is a plan view of a portion of the core showing the arrangement of fuel assemblies. FIG. 3 is an exploded perspective view of a general spring assembly. FIG. 4A is a partially cutaway side view of an example of a conventional mounting device for a spring assembly. The opening in the figure is an explanatory diagram of the deformed state of the screw thread. FIG. 5 is a partially cutaway exploded view of an embodiment of this invention. FIG. 6 is a sectional view of the pin insertion portion. FIG. 7 is a partially cutaway side view showing the fixed state of the spring assembly. In the figure, 1, 11... leaf spring, 2, 12... stopper,
3.13...Bolt, 4...Corner plate, 5...Corner pillar, lla, 12a...Horizontal head, llb...
Through hole, 12b...screw hole, 13a...head, 13b
...Intermediate shaft portion, 13c...Lower male threaded portion, 13d.
...Horizontal hole, 16...Pin, b...Channel box. ``''Yellowness U is 1 ffI3' K...V1 old mouth 3 曾-'lb 5

Claims

[Scope of utility model registration request]

An assembly m consisting of a vertically oriented angle-shaped stopper 12 and a bifurcated hanging plate spring 11 is disposed at a required corner of a channel box b surrounding the fuel bundle, and the spring assembly m is attached to a bolt 3. In a device that is removably fixed to a corner post 5 of an upper tie plate, the intermediate shaft of the bolt 13 is composed of a lower male threaded portion 13c to be screwed into the corner post 5 and an intermediate shaft portion 13b having a slightly smaller diameter. The plate spring 11 and the horizontal heads 11a and 12a of the stopper 12 are fitted into the portion 13b, and a pin 16 is inserted into the horizontal hole 13d at a lower position.
1. A fixing device for a spring assembly in a nuclear fuel assembly, characterized in that the spring assembly is attached by inserting the spring assembly through the spring assembly and bending both protruding ends of the spring assembly.