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1. (WO2013111574) CLAMPING DEVICE FOR MAINTAINING MEASUREMENT PIPING IN NUCLEAR REACTOR

Pub. No.:    WO/2013/111574    International Application No.:    PCT/JP2013/000300
Publication Date: Fri Aug 02 01:59:59 CEST 2013 International Filing Date: Thu Jan 24 00:59:59 CET 2013
IPC: G21C 15/25
G21C 17/032
G21C 19/02
Applicants: KABUSHIKI KAISHA TOSHIBA
株式会社 東芝
Inventors: OZAWA, Yusuke
小澤 佑輔
KINUGASA, Kunihiko
衣笠 邦彦
MORI, Hajime
森 啓
MINATO, Yuki
湊 裕紀
WATANABE, Masanobu
渡邉 勝信
ADACHI, Hiroyuki
安達 弘幸
MITSUHASHI, Tadahiro
三橋 忠浩
Title: CLAMPING DEVICE FOR MAINTAINING MEASUREMENT PIPING IN NUCLEAR REACTOR
Abstract:
Provided is a clamping device for maintaining measurement piping in nuclear reactors, the device being capable of easily accomplishing the work of securely fixing measurement piping, which is disposed in a very cramped space, to the diffuser by remote control from just above the reactor core. The clamping device comprises a first clamping mechanism and a second clamping mechanism. The first clamping mechanism has: multiple clamps that clamp the measurement piping; multiple first clamp-operating bolts that can be rotated by remote control from just above the reactor core; and a wedge mechanism, which converts the rotation of said clamp-operating bolts into movement of the multiple clamps in the radial direction of the diffuser and generates a clamping force that secures the measurement piping. The second clamping mechanism has: support clamps for clamping the support; a second clamp-operating bolt that can be rotated by remote control from just above the reactor core; and a wedge mechanism, which converts the rotation of the second clamp-operating bolt into movement of said support clamps in the tangential direction of the diffuser and generates a clamping force that secures the support.