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Title:
SEAL STRUCTURE, NUCLEAR REACTOR BUILDING INCLUDING THIS SEAL STRUCTURE, AND NUCLEAR POWER GENERATING PLANT INCLUDING THIS NUCLEAR REACTOR BUILDING, AND SEAL STRUCTURE CONSTRUCTION METHOD
Document Type and Number:
Japanese Patent JP2015057560
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a seal structure capable of ensuring fireproof even if a gap is generated between a fireproof member and a wall surface.SOLUTION: A seal structure includes: an arrangement member 2 extending along an axis O so as to be inserted into a hole 13 formed in a wall 10; a fireproof seal material 3 for closing a space between an outer circumferential surface of the arrangement member 2 and an inner circumferential surface of the hole 13; a fireproof member 5 fixed to the outer circumferential surface of the arrangement member 2 on one side of the wall 10 in a direction of the axis O, contacting the wall 10, and having a concave portion 51 formed therein to be recessed from the other side in the direction of the axis O; and a first heat expansion fireproof material 6 provided in the concave portion 51 and expanding by heat. The heat is propagated to the first heat expansion fireproof material 6 via a gap between the fireproof member 5 and the wall 10 formed by relative movement of the arrangement member 2 and the wall 10 in the direction of the axis O, whereby the first heat expansion fireproof material 6 expands.

Inventors:
MUROYA ITARU
NAGASE RYUICHI
FUJIWARA YOSHIHISA
IWATA TOMOKAZU
TSUMURA YASUHIRO
SAKAGUCHI YUKIHIRO
TAKANO JUNICHIRO
Application Number:
JP2014070332A
Publication Date:
March 26, 2015
Filing Date:
March 28, 2014
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
NICHIAS CORP
International Classes:
F16L5/04; E04B1/94
Domestic Patent References:
JPH042925U1992-01-10
JP2007032631A2007-02-08
JPS532028U1978-01-10
JP2014148998A2014-08-21
Foreign References:
US20070193141A12007-08-23
EP2535627A12012-12-19
Attorney, Agent or Firm:
Woods Ryuichiro
Masatake Shiga
Norio Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma