Title:
REACTOR CORE TUBE INSPECTION DEVICE AND REACTOR CORE TUBE INSPECTION METHOD
Document Type and Number:
Japanese Patent JP2015187551
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To detect wear or damage of a reactor core tube such as a ceramic tube and the like in a heating device at an early stage and surely, and to attain longer period of use of the reactor core tube surely and the replacement of the reactor core tube having the period of use expired at the early stage and surely.SOLUTION: A reactor core tube inspection device 1 comprises: a shank 2 that moves to be inserted inside a reactor core tube 20 from one end side of a reactor core tube 20; an axis core adjustment unit that keeps an axis core Y of the shank 2 in a state concentric with a tube axis X of the reactor core tube 20; a main body unit 4 that is fixed in the shank 2 and extends toward a direction orthogonal to the axis core Y across a second axis core Y of the shank 2; a pair of abutting bodies 5 that is supported at both portions across the axis core Y in the main body unit 4 in a state movable along the extension direction of the main body unit 4; a pair of urging mechanisms 6 that urges each abutting body 5 in a direction separating relative to the axis core Y of the shank 2 along the extension direction to cause the abutting body 5 to abut on an inner surface 20a of the reactor core tube 20; and a position detection unit 7 that detects a position of each abutting body 5 in the extension direction.
Inventors:
IWASAKI SHINTARO
YAMANAKA HIDEFUMI
OZAWA YOSHINORI
YAMANAKA HIDEFUMI
OZAWA YOSHINORI
Application Number:
JP2014064353A
Publication Date:
October 29, 2015
Filing Date:
March 26, 2014
Export Citation:
Assignee:
OSAKA GAS CO LTD
International Classes:
G01B5/20; F27B5/18; F27D21/00; G01B5/00
Attorney, Agent or Firm:
Patent business corporation r&c