Title:
SEALING DEVICE FOR BUS DUCT, AND PENETRATION PART STRUCTURE
Document Type and Number:
Japanese Patent JP2016059228
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a sealing device for a bus duct capable of improving a sealing performance in the case of fire between the bus duct that penetrates a partition wall for separating a fire zone and the partition wall, and a penetration part structure.SOLUTION: In a sealing device 10, a frame material 12 of a holding member 11 configured by welding steel materials having L-shaped and Z-shaped cross sections is provided while surrounding an outer peripheral part of a bus duct 4 which penetrates a fireproofing wall 1 as a partition wall and of which the cross section is rectangular. The frame material 12 is fixed to the bus duct 4 by a bolt 14, and an accommodation part 13 is formed between the frame material and the bus duct 4. In the accommodation part 13, an incombustible blanket 18 having elasticity is accommodated while being compressed so as to be elastically deformed and seal a gap between the holding member 11 and the bus duct 4 and a gap between the bus duct 4 and the incombustible wall 1 or mortar 2. Even if a fire occurs in a fire zone and the bus duct 4 is deformed, the incombustible blanket 18 is elastically deformed and prevents a gap from being generated, such that the sealing performance is improved.SELECTED DRAWING: Figure 1
Inventors:
FUKAO HIROAKI
SASAKI YUKI
SHIMIZU RYO
SASAKI YUKI
SHIMIZU RYO
Application Number:
JP2014185919A
Publication Date:
April 21, 2016
Filing Date:
September 12, 2014
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02G5/06; E04B1/94; F16L5/02
Attorney, Agent or Firm:
Keigo Murakami
Masuo Oiwa
Kenji Yoshizawa
Takenaka Ikuo
Masuo Oiwa
Kenji Yoshizawa
Takenaka Ikuo
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