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Patent Searching and Data


Title:
SEAL STRUCTURE
Document Type and Number:
Japanese Patent JP2014148998
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a seal structure capable of securing fire resistance even when a gap is generated later between a seal material and an arrangement member.SOLUTION: The seal structure comprises: an arrangement member 1 extending along an axial line O so as to penetrate through a hole part 13 formed on a wall 10; a fire-resistant seal material 2 for blocking a space between an outer periphery of the arrangement member 1 and an inner periphery of the hole part 13; a cover 31 provided at least on one side of the fire-resistant seal material 2 in a direction of the axial line O, and defining a closed space 3a contacting a boundary B between the arrangement member 1 and the fire-resistant seal material 2; and a thermal expansion fire-resistant material 33 filled in the closed space 3a, expanded by heat reached via a gap formed at the boundary B between the arrangement member 1 and the fire-resistant seal material 2, and entering into the gap.

Inventors:
MUROYA ITARU
IWATA TOMOKAZU
TSUMURA YASUHIRO
KONDO YUJI
Application Number:
JP2013016642A
Publication Date:
August 21, 2014
Filing Date:
January 31, 2013
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F16L5/04; E04B1/94
Domestic Patent References:
JP2011074969A2011-04-14
JP2009108939A2009-05-21
JP2011122414A2011-06-23
Foreign References:
WO1994024471A11994-10-27
EP0662578A11995-07-12
Attorney, Agent or Firm:
Woods Ryuichiro
Masatake Shiga
Norio Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma