JP2004033246A

JP2004033246A - Piercing structure of fireproof compartment and piercing cylinder forming the piercing structure

Info

Publication number: JP2004033246A
Application number: JP2002190257A
Authority: JP
Inventors: Nobukazu Sugihara; 杉原　伸和
Original assignee: Mirai Industry Co Ltd
Current assignee: Mirai Industry Co Ltd
Priority date: 2002-06-28
Filing date: 2002-06-28
Publication date: 2004-02-05
Anticipated expiration: 2022-06-28
Also published as: JP3883913B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piercing structure of a fireproof compartment capable of quickly inflating a refractory material located inside the fireproof compartment and effectively exhibiting the fireproofing effect inside the fireproof compartment, and a piercing cylinder forming the piercing structure. <P>SOLUTION: The piercing structure is formed in a fireproof compartment wall 11 by inserting a cable 12 into the piercing cylinder 14 set in a through hole 13 piercing a fireproof compartment wall 11 in the cross direction and disposing the refractory material 15 in the gap between the outer surface of the cable 12 and the inner surface of the piercing cylinder 14. In the setting state of the piercing cylinder 14 to the fireproof compartment wall 11, a heat propagation space S is formed between the outer surface of the piercing cylinder 14 and the inner surface of the through-hole 13. Accordingly, when a fire breaks out, the heat of the fire is propagated in the heat propagation space S to quickly heat the piercing cylinder 14 from the outer surface side, so that the refractory material 15 can be quickly inflated. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、建築物の壁、床等の防火区画体を貫通する貫通孔内に設置された貫通筒体の内周面と、貫通筒体内に挿通されたケーブルの外周面との間に設けられる耐火材を速やかに膨張させるための防火区画体の貫通構造及び同貫通構造を形成する貫通筒体に関するものである。
【０００２】
【従来の技術】
従来より、建築物の防火区画体としての防火区画壁に管材、ケーブル等の挿通体を貫通させて設置するために、防火区画壁には貫通構造が形成され、その貫通構造としては、実開平４−９５０５３号に開示されるものが知られている。
【０００３】
この貫通構造は、防火区画壁に設けられた貫通孔内に金属材料製の固定具が貫通筒体として挿通され、その固定具の外周面と貫通孔の内周面との間の隙間にモルタル、ロックウール等が充填されて構成されている。また、固定具内にはケーブル等の長尺物が防火区画壁を貫通するように挿通され、固定具の両端側における内周面と、長尺物の外周面との間には耐火材としての熱発泡性耐焔材が充填されている。
【０００４】
そして、防火区画壁に上記貫通構造が形成された建築物に万一、火災が発生した場合、前記モルタル、ロックウール等により固定具の外周面と貫通孔の内周面との間が延焼経路、煙の経路となることが防止される。また、前記熱発泡性耐焔材が火災の熱により発泡し、その発泡した熱発泡性耐焔材により固定具内が密封される。その結果、貫通孔内における延焼、熱の伝播が遮断され、防火区画壁における防火効果が発揮される。
【０００５】
【発明が解決しようとする課題】
ところが、上記従来構造においては、固定具の端部側の内部から外部へ露出している熱発泡性耐焔材のみが火災発生時の熱により直接的に加熱される。そして、貫通孔の内周面と、固定具の外周面との間には、モルタル等が充填されているため、固定具の内部から外部へ露出せず、防火区画壁内に位置する熱発泡性耐焔材は、固定具の端部から中央側へ伝導した熱によって外周側から加熱される。即ち、防火区画壁内に位置する熱発泡性耐焔材は、外部へ露出した熱発泡性耐焔材よりも遅れて徐々に膨張していく。
【０００６】
従って、ケーブルの延焼速度が速いと、防火区画壁内に位置する熱発泡性耐焔材は、固定具を伝導した熱によって膨張するよりも先に、ケーブルの延焼により発生した熱によって膨張してしまう。その結果、ケーブルが延焼するよりも先に熱発泡性耐焔材を膨張させて固定具内を密封して、ケーブルの延焼を阻止することができず、防火区画体における防火効果が低下する虞があるという問題があった。
【０００７】
本発明は、上記従来技術に存在する問題点に着目してなされたものである。その目的とするところは、防火区画体内に位置する耐火材を速やかに膨張させることができ、防火区画体における防火効果を効果的に発揮させることができる防火区画体の貫通構造及び同貫通構造を形成する貫通筒体を提供することにある。
【０００８】
【課題を解決するための手段】
上記問題点を解決するために、請求項１に記載の発明は、建築物の防火区画体に挿通体を貫通させるため、防火区画体を貫通する貫通孔内に設置された金属材料製の貫通筒体内に挿通体が挿通されるとともに、同挿通体の外面と貫通筒体の内周面との間の隙間に、膨張状態で前記貫通筒体内を充填密封する耐火材が設けられることにより構成される防火区画体の貫通構造であって、前記貫通筒体の貫通孔内への設置状態において、同貫通筒体の外周面を貫通孔の内周面から離間させることにより、火災等で発生する熱を伝播させる熱伝播空間が貫通孔内に形成されているとともに、少なくとも火災等の発生時に、前記熱伝播空間を遮断する遮断手段が貫通孔内又は防火区画体外面に設けられ、前記熱伝播空間を伝播した熱により貫通筒体を外周面側から加熱させ、同貫通筒体を伝導した熱によって前記耐火材を加熱、膨張させることを要旨とする。
【０００９】
請求項２に記載の発明は、請求項１に記載の防火区画体の貫通構造において、前記貫通筒体は防火区画体としての防火区画床を上下方向に貫通して設けられた貫通孔内に設置され、前記遮断手段は防火区画床の上面側に設けられていることを要旨とする。
【００１０】
請求項３に記載の発明は、請求項１に記載の防火区画体の貫通構造において、前記貫通筒体は防火区画体としての防火区画壁を横方向に貫通して設けられた貫通孔内に設置され、前記遮断手段は、貫通孔の貫通方向における中央部の内周面と貫通筒体の外周面との間に設けられていることを要旨とする。
【００１１】
請求項４に記載の発明は、請求項１〜請求項３のいずれか一項に記載の防火区画体の貫通構造において、前記遮断手段は熱によって膨張する材料よりなる耐火膨張材であることを要旨とする。
【００１２】
請求項５に記載の発明は、請求項４に記載の防火区画体の貫通構造において、前記耐火膨張材は貫通筒体の外周面と貫通孔の内周面との間に設けられていることを要旨とする。
【００１３】
請求項６に記載の発明は、請求項２に記載の防火区画体の貫通構造において、前記遮断手段は、防火区画床の上面側に形成された熱伝播空間の開口を、防火区画床の上面側から閉塞する閉塞体より形成されていることを要旨とする。
【００１４】
請求項７に記載の発明は、請求項６に記載の防火区画体の貫通構造において、前記閉塞体は、貫通筒体の一端部の外周面全体から外方へ突出する鍔部により形成されていることを要旨とする。
【００１５】
請求項８に記載の発明は、請求項１〜請求項７のいずれか一項に記載の防火区画体の貫通構造において、前記貫通筒体の外面には、同貫通筒体の外周面を貫通孔の内周面から離間させた状態を維持して熱伝播空間を確保するための突出部が設けられていることを要旨とする。
【００１６】
請求項９に記載の発明は、建築物の防火区画体に挿通体を貫通させるため、前記防火区画体を貫通する貫通孔内に設置され、内部に挿通体が挿通されるとともに、同挿通体の外面との間の隙間に、膨張状態で内部を密封する耐火材が設けられることにより防火区画体の貫通構造を形成する貫通筒体であって、前記貫通孔内への設置状態で、当該貫通孔の内周面から外周面が離間すべく外径が貫通孔の直径より小さく形成され、貫通孔の内周面との間に、火災等で発生する熱を伝播させる熱伝播空間を形成するとともに、少なくとも火災等の発生時に、前記熱伝播空間を遮断する遮断手段が設けられ、前記熱伝播空間を伝播した熱により外周面側から加熱され、同外周面側から伝導した熱によって前記耐火材が加熱、膨張されることを要旨とする。
【００１７】
請求項１０に記載の発明は、請求項９に記載の防火区画体の貫通構造を形成する貫通筒体において、前記熱により膨張する材料よりなる耐火膨張材が前記遮断手段として外周面に設けられていることを要旨とする。
【００１８】
請求項１１に記載の発明は、請求項９又は請求項１０に記載の防火区画体の貫通構造を形成する貫通筒体において、前記貫通孔の内周面から外周面を離間させた状態を維持して熱伝播空間を確保するための突出部が外面に設けられていることを要旨とする。
【００１９】
請求項１２に記載の発明は、請求項９〜請求項１１のいずれか一項に記載の防火区画体の貫通構造を形成する貫通筒体において、前記耐火材は内周面に予め設けられていることを要旨とする。
【００２０】
請求項１３に記載の発明は、建築物の防火区画体に挿通体を貫通させるため、前記防火区画体を貫通する貫通孔内に設置され、内部に挿通体が挿通されるとともに、同挿通体の外面との間の隙間に、膨張状態で内部を充填密封する耐火材が設けられることにより防火区画体の貫通構造を形成する貫通筒体であって、前記貫通孔内への設置状態で、当該貫通孔の内周面から外周面が離間すべく外径が貫通孔の直径より小さく形成され、貫通孔の内周面との間に、火災等で発生する熱を伝播させる熱伝播空間を形成するとともに、貫通孔の内周面から外周面を離間させた状態を維持して前記熱伝播空間を確保するための突出部が外面に設けられ、前記熱伝播空間を伝播した熱により外周面側から加熱され、同外周面側から伝導した熱によって前記耐火材が加熱、膨張されることを要旨とする。
【００２１】
請求項１４に記載の発明は、請求項１３に記載の防火区画体の貫通構造を形成する貫通筒体において、前記耐火材は内周面に予め設けられていることを要旨とする。
【００２２】
【発明の実施の形態】
（第１の実施形態）
以下、本発明を具体化した防火区画体の貫通構造及び同貫通構造を形成する貫通筒体の第１の実施形態を図１〜図３に従って説明する。
【００２３】
図１に示すように、建築物の防火区画体としての防火区画壁１１における貫通構造は、コンクリート製の防火区画壁１１に防火効果を付与した状態で挿通体としてのケーブル１２を貫通させるために形成されるものである。即ち、前記貫通構造は防火区画壁１１を横方向へ貫通する貫通孔１３内に設置された貫通筒体１４内にケーブル１２が挿通され、同ケーブル１２の外面と貫通筒体１４の内周面との間の隙間に、膨張状態で貫通筒体１４内を充填密封する耐火材１５が設けられることにより形成されている。
【００２４】
図２に示すように、貫通構造を形成する前記貫通筒体１４は金属材料により略円筒状に形成された筒本体１６を備え、図１に示すように、同筒本体１６内には前記ケーブル１２を挿通可能に形成されている。
【００２５】
また、筒本体１６の外径は、前記貫通孔１３の直径より小さく形成されている。そして、貫通筒体１４の貫通孔１３内への設置状態で、筒本体１６の外周面が貫通孔１３の内周面から離間し、その離間により形成された空間に筒本体１６と同心円状をなす熱伝播空間Ｓが形成されるように筒本体１６の外径が設定されている。
【００２６】
熱伝播空間Ｓにおける貫通孔１３の径方向への長さ、即ち、熱伝播空間Ｓの幅は、熱伝播空間Ｓの内奥方へ熱を効率良く伝播させるために少なくとも５ｍｍに設定されることが好ましい。なお、熱伝播空間Ｓの厚みは少なくとも５ｍｍに限定されるものではなく、貫通孔１３の直径、防火区画壁１１の厚み、筒本体１６の外径等に依存して任意に変更される。
【００２７】
図１及び図２に示すように、筒本体１６の外周面には、同筒本体１６の周方向に沿って等間隔おきに外方へ延びる突片１７が突出部として形成され、各突片１７の先端縁における外径も貫通孔１３の直径より若干小さく形成されている。なお、各突片１７の外方への突出長さは、貫通筒体１４の貫通孔１３内への設置状態で、貫通筒体１４が上下に移動しても突片１７が貫通孔１３の内周面に即座に当接して熱伝播空間Ｓ全体の幅がほぼ同じに維持されるように設定されている。また、筒本体１６の周方向に沿った突片１７同士の間には熱伝播空間Ｓを形成する隙間が形成されている。
【００２８】
前記突片１７のうち、筒本体１６の長さ方向の中央部に位置するとともに、同長さ方向に沿って隣接する突片１７の間には、遮断手段としての耐火膨張材１８が充填されている。この耐火膨張材１８は１２０℃以上の熱を受けると体積が加熱前の３〜５倍に膨張するものである。また、耐火膨張材１８は積層構造をなし、加熱により層間隔が広がって膨張し、その層間が広がる方向は、耐火膨張材１８の外周面が筒本体１６の外周面から離れ、同耐火膨張材１８の厚みが増す方向のみに設定されている。
【００２９】
筒本体１６の内周面には、前記耐火膨張材１８と同じ材質よりなる耐火材１５が予め塗布され設けられている。この耐火材１５の膨張する方向は、前記層間が広がる方向が、耐火材１５の内周面が筒本体１６の内周面から離れ、同耐火材１５の厚みが増す方向のみに設定されている。筒本体１６の一端側（図１及び図２では右端側）の外周面には複数の係止爪２０が一定間隔おきに複数箇所に形成されている。
【００３０】
そして、図１に示すように、筒本体１６、耐火材１５、突片１７及び耐火膨張材１８よりなる貫通筒体１４が貫通孔１３内に挿入され、前記係止爪２０が貫通孔１３の開口縁部である防火区画壁１１の外面に係止される。すると、筒本体１６の下側に位置する突片１７の先端が貫通孔１３の内周面に当接して、貫通筒体１４が防火区画壁１１に設置されるとともに、貫通孔１３内に設置される。
【００３１】
この設置状態で、突片１７により、熱伝播空間Ｓが周方向全体に亘ってほぼ同じ幅に維持され、筒本体１６の外周面と、貫通孔１３の内周面との間が離間して熱伝播空間Ｓが形成されている。また、耐火膨張材１８が貫通孔１３の貫通方向における中央部に位置しているとともに、貫通筒体１４が貫通孔１３内にほぼ水平に設置されている。
【００３２】
さらに、貫通孔１３内に設置された貫通筒体１４内にケーブル１２が挿通されることによって、ケーブル１２が防火区画壁１１を貫通する状態に配置される。貫通筒体１４内に挿通されたケーブル１２の外周面と耐火材１５の内周面との間には若干の隙間が形成されている。
【００３３】
次に、上記構成の貫通筒体１４を用いて形成された防火区画壁１１の貫通構造の作用を説明する。
さて、図１に示すように、防火区画壁１１に貫通構造が形成された建築物において、防火区画壁１１の一面側（図１では右側面側）で火災等が発生し、ケーブル１２の被覆部が燃えたとする。すると、火災等により発生した熱が熱伝播空間Ｓを伝播し、その熱により耐火膨張材１８が加熱される。このとき、耐火膨張材１８は貫通孔１３の内周面と、貫通筒体１４の外周面との間に設けられ、熱伝播空間Ｓに設けられている。そのため、耐火膨張材１８が貫通筒体１４内に設けられている場合と比較して、耐火膨張材１８を速やかに加熱され、膨張する。
【００３４】
その結果、図３に示すように、耐火膨張材１８が膨張し、その膨張した耐火膨張材１８により、貫通孔１３の貫通方向の内周面における中央部と貫通筒体１４の外周面の中央部との間に位置する熱伝播空間Ｓが全周に亘って密封閉鎖される。即ち、熱伝播空間Ｓが熱、煙の経路となり、防火区画壁１１の他面側（図１では左側面側）へ熱、煙が伝わる不都合がなくなる。
【００３５】
また、火災によって発生した熱により、耐火材１５において、貫通筒体１４の右端部内から外部へ露出する部分が直接的に加熱されるとほぼ同時に、防火区画壁１１外面より突出する貫通筒体１４の外周面が熱により加熱される。さらに、熱が熱伝播空間Ｓから貫通孔１３内に入り込み、さらに熱伝播空間Ｓを伝播する。
【００３６】
このとき、筒本体１６の周方向に沿った突片１７同士の間には間隔があいているため、突片１７によって熱の伝播が妨げられることはない。すると、熱伝播空間Ｓを伝播した熱により防火区画壁１１内に位置し、貫通筒体１４の中央部側に位置する貫通筒体１４が外周面側から加熱され、同貫通筒体１４を伝導した熱により耐火材１５が加熱される。
【００３７】
その結果、貫通筒体１４の右側に位置する耐火材１５は、外部に露出した部分だけでなく、防火区画壁１１内に位置する部分も速やかに加熱、膨張される。そして、その膨張した耐火材１５により、貫通筒体１４の右側内部が速やかに充填密封されるとともに、同内部に位置するケーブル１２が耐火材１５内に埋められる。また、耐火膨張材１８より左側の耐火材１５は筒本体１６を伝導した熱により加熱され、膨張する。
【００３８】
従って、ケーブル１２が耐火材１５内に埋まることにより、ケーブル１２の周りに酸素が無くなり、貫通筒体１４内でのケーブル１２のそれ以上の延焼が防止されるとともに、貫通筒体１４内での熱の伝播、煙の通過等が防止され、防火区画壁１１における防火効果が発揮される。
【００３９】
第１の実施形態によれば、次のような効果が発揮される。
（１）防火区画壁１１に貫通構造が形成された建築物に万一火災が発生しても、熱伝播空間Ｓにより貫通孔１３内に熱を伝播させ、防火区画壁１１内に位置し、貫通筒体１４外へ露出しない耐火材１５も速やかに膨張させて貫通筒体１４内を密封することができる。従って、ケーブル１２が延焼していくよりも先に耐火材１５が膨張し、その膨張した耐火材１５によりケーブル１２のそれ以上の延焼を阻止することができ、防火区画壁１１における防火効果を効果的に発揮させることができる。
【００４０】
（２）耐火膨張材１８及び耐火材１５は、筒本体１６の外周面及び内周面に予め付着されている。そのため、防火区画壁１１に貫通構造を形成する際に、その形成現場で筒本体１６に耐火膨張材１８及び耐火材１５を塗布する作業が不要となり、貫通構造の形成作業の時間短縮を図ることができる。
【００４１】
（３）突片１７により、筒本体１６の外周面に設けられた耐火膨張材１８の筒本体１６の長さ方向に沿った位置ずれ等を防止することができる。従って、耐火膨張材１８が貫通筒体１４の長さ方向における中央部に設置された状態を維持することができる。
【００４２】
（４）耐火膨張材１８が膨張することにより、熱伝播空間Ｓを速やかに遮断することができ、貫通孔１３が熱、煙の経路となる虞をなくすことができる。従って、防火区画壁１１による防火効果を発揮させることができる。
【００４３】
（５）貫通孔１３の貫通方向の中央部で耐火膨張材１８による熱伝播空間Ｓの遮断を行うことができる。従って、耐火膨張材１８が貫通筒体１４のいずれかの端部側に設けられ、その耐火膨張材１８が設けられた端部側で火災が発生した場合に、耐火膨張材１８の膨張により熱伝播空間Ｓでの熱の伝播効率が低下してしまう虞をなくすことができる。その結果、火災が貫通筒体１４のいずれの端部側から発生しても、熱伝播空間Ｓによる熱の伝播効果を発揮させることができる。
【００４４】
（６）加熱により膨張する耐火膨張材１８により遮断手段を構成した。そのため、火災発生時には、耐火膨張材１８は速やかかつ確実に膨張して熱伝播空間Ｓを速やかかつ確実に遮断することができる。
【００４５】
（７）突片１７の先端が貫通孔１３の内周面に当接するため、筒本体１６の外周面と貫通孔１３の内周面とが一定の幅で離間した状態を維持することができる。従って、熱伝播空間Ｓが偏って狭くなる位置が生じることなく、熱伝播空間Ｓ全周に亘って熱の伝播作用を確実に発揮させることができる。
【００４６】
（８）耐火膨張材１８は貫通孔１３の内周面と、貫通筒体１４の外周面との間に設けられ、熱伝播空間Ｓに設けられている。そのため、耐火膨張材１８が貫通筒体１４内に設けられている場合と比較して、耐火膨張材１８を速やかに加熱され、膨張する。従って、耐火膨張材１８により熱伝播空間Ｓを速やかに遮断することができる。
【００４７】
（第２の実施形態）
以下、本発明を具体化した防火区画体の貫通構造及び同貫通構造を形成する貫通筒体の第２の実施形態を図４〜図６に従って説明する。なお、第２の実施形態は、第１の実施形態の防火区画体及び貫通筒体を変更したのみの構成であるため、同様の部分についてはその詳細な説明を省略する。
【００４８】
図４に示すように、第２の実施形態における防火区画体は、建築物に形成されたコンクリート製の防火区画床２１であり、その防火区画床２１には上下方向へ貫通する貫通孔２１ａが形成されている。貫通筒体２２は金属材料より略円筒状に形成された筒本体２３を備え、同筒本体２３内にケーブル１２を挿通可能に形成されている。
【００４９】
筒本体２３の外径は、前記貫通孔２１ａの直径より小さく形成されている。即ち、筒本体２３の外径は、貫通筒体２２を貫通孔２１ａ内に設置したとき、筒本体２３の外周面が貫通孔２１ａの内周面から離間し、その離間した空間に筒本体２３と同心円状をなす熱伝播空間Ｓが形成されるように設定されている。
【００５０】
図４〜図６に示すように、筒本体２３の一端（図４〜図６では上端）の内周縁には筒本体２３の内方へ突出する爪片２４が等間隔おきに４カ所に形成されている。そして、図５及び図６に示すように、筒本体２３の一端側の内周面にはパテ等の難燃材２５が設けられ、前記爪片２４により難燃材２５の筒本体２３内からの脱落が防止されている。
【００５１】
筒本体２３の中央部より一端側及び他端（図４〜図６では下端）側の周壁には、それぞれ筒本体２３の周壁を外方へ折り曲げることにより形成された折り曲げ片２６が突出部として筒本体２３の周方向に沿って複数箇所に設けられている。各折り曲げ片２６の先端縁における外径も貫通孔２１ａの直径より若干小さく形成されている。
【００５２】
なお、折り曲げ片２６の突出長さは、貫通筒体２２の貫通孔２１ａ内への設置状態で、貫通筒体２２が横方向へ移動しても折り曲げ片２６が貫通孔２１ａの内周面に即座に当接して熱伝播空間Ｓ全体の幅がほぼ同じに維持されるように設定されている。
【００５３】
さらに、筒本体２３の一端側における折り曲げ片２６は筒本体２３の長さ方向に２段に形成されている。そして、２段に位置する折り曲げ片２６の間には、筒本体２３の周方向に沿って前記耐火膨張材１８が遮断手段として設けられている。即ち、耐火膨張材１８が折り曲げ片２６により筒本体２３の長さ方向に沿って移動しないように位置決めされている。
【００５４】
筒本体２３の上端側に位置する折り曲げ片２６同士の間には、筒本体２３の周壁を外方へ折り曲げることにより形成された係止突片２７が設けられている。さらに、筒本体２３の内周面には第１の実施形態と同様の耐火材１５が塗布されて設けられている。
【００５５】
そして、図４に示すように、貫通筒体２２が貫通孔２１ａ内に挿入され、前記係止突片２７が貫通孔２１ａの開口縁部に係止して貫通筒体２２が防火区画床２１に設置される。このときも、折り曲げ片２６により、熱伝播空間Ｓが周方向全体に亘ってほぼ同じ幅に維持されているとともに、貫通筒体２２が貫通孔２１ａ内にほぼ鉛直に設置されている。さらに、貫通孔２１ａ内に設置された貫通筒体２２内にケーブル１２が挿通され、そのケーブル１２は防火区画床２１を貫通する状態となる。
【００５６】
ケーブル１２の外周面と耐火材１５の内周面との間には若干の隙間が形成されている。貫通筒体２２の防火区画床２１への設置状態では熱伝播空間Ｓが形成されて貫通構造が形成されている。さらに、防火区画床２１の上面側としての貫通孔２１ａの上部には、耐火膨張材１８が遮断手段として設けられている。
【００５７】
さて、図４に示す貫通構造が防火区画床２１に形成された建築物において、防火区画床２１の下側で火災が発生した場合、火災により発生した熱が熱伝播空間Ｓを下側から上側へ向かって伝播する。すると、その熱により耐火膨張材１８が加熱され、図６に示すように、耐火膨張材１８が膨張する。そして、その膨張した耐火膨張材１８により、貫通孔２１ａにおいて、防火区画床２１の上面側内周面と貫通筒体２２の外周面の上端部との間に位置する熱伝播空間Ｓの一部が密封閉鎖される。また、難燃材２５により防火区画床２１の上面から突出するケーブル１２の外面が保護される。
【００５８】
さらに、貫通筒体１４の下端部内から外部へ露出する耐火材１５が火災により発生した熱によって直接的に加熱される。それとほぼ同時に、熱伝播空間Ｓ内を伝播した熱により、貫通筒体２２の下側に位置する耐火材１５において、外部に露出した部分だけでなく、防火区画床２１内に位置する部分も速やかに加熱、膨張される。
【００５９】
そして、その膨張した耐火材１５により、ケーブル１２が上方に向かって延焼するよりも先に貫通筒体２２の下側が充填密封され、ケーブル１２の延焼が阻止される。また、熱伝播空間Ｓにおける熱の伝播、煙の通過等が防止され、防火区画床２１における防火効果が発揮される。
【００６０】
従って、第２の実施形態によれば、前記第１の実施形態に記載の特徴に加えて以下の特徴を得ることができる。
第２の実施形態では、耐火膨張材１８の膨張により、防火区画床２１の上面側で熱伝播空間Ｓの一部を密閉遮断することができる。従って、耐火膨張材１８が防火区画床２１の下面側に設けられた場合に、耐火膨張材１８の膨張により熱伝播空間Ｓ全体へ熱の伝播効率が低下してしまう虞をなくすことができる。
【００６１】
なお、各実施形態は以下のように変更してもよい。
・　図７に示すように、半円筒状をなす分割体３１同士を組み合わせて形成される貫通筒体３３を使用してもよい。具体的に説明すると、前記分割体３１は金属材料により半円筒状に形成され、外周面には、第１の実施形態と同様の突片１７、突片１７間の耐火膨張材１８及び係止爪２０が形成されている。また、各分割体３１の内周面には第１及び第２実施形態と同様の耐火材１５が設けられている。
【００６２】
そして、上記貫通筒体３３を用いて貫通構造を形成するには、ケーブル１２を貫通孔１３内に挿通した後に、一対の分割体３１をそれぞれ貫通孔１３内に挿入しながら、ケーブル１２の外周面に装着する。このとき、図８（ａ）に示すように、分割体３１の長さ方向に沿った端縁同士の間に形成される隙間には、難燃性のパテ３４が充填される。
【００６３】
前記パテ３４は加熱により全ての方向へ向かって膨張する。即ち、分割体３１の端縁同士が広がる方向及び貫通孔１３の内周面に近づく方向へ膨張する。ケーブル１２の外周に貫通筒体３３が装着され、貫通筒体３３が貫通孔１３内に設置されると、貫通筒体３３の外周面と貫通孔１３の内周面との間に熱伝播空間Ｓが形成され、防火区画壁１１に貫通構造が形成される。
【００６４】
防火区画壁１１に貫通構造が形成された建築物に火災が発生した場合、火災により発生した熱が熱伝播空間Ｓを伝播する。そして、図８（ｂ）に示すように、第１の実施形態と同様に、耐火膨張材１８の膨張により、熱伝播空間Ｓが遮断され、耐火材１５の膨張により、貫通筒体３３内が密封閉鎖される。
【００６５】
耐火材１５の厚み方向への膨張により、ケーブル１２の外周面と各分割体３１の内周面との間隔が広がり、各分割体３１は貫通筒体３３の外径が拡がるように外方へ押し出される。このとき、突片１７の先端がそれぞれ貫通孔１３の内周面に当接して、分割体３１の外周面と貫通孔１３の内周面とが離間した状態が維持され、熱伝播空間Ｓが確保される。
【００６６】
また、火災によって発生する熱により、パテ３４が膨張するため、その膨張したパテ３４により、各分割体３１の端縁同士の間の隙間が充填される。そのため、分割体３１の端縁同士の間に隙間が形成されず、分割体３１間の隙間が延焼経路や煙の経路になる不具合を防止することができる。加えて、ケーブル１２を貫通孔１３内に挿通した後でも貫通孔１３内に貫通筒体３３を設置することができるため、貫通構造を形成する際の、ケーブル１２の挿通、貫通筒体３３の設置等の施工の順序を考慮する必要がなく、作業性を高めることができる。
【００６７】
なお、この貫通筒体３３はケーブル１２を貫通孔１３内に挿通する前に、同ケーブル１２の任意の位置に装着し、分割体３１同士の間にパテ３４を充填した後に貫通孔１３内に挿入してもよい。
【００６８】
また、分割体３１同士の間の隙間には全ての方向へ膨張するパテ３４を使用したが、このパテ３４を分割体３１の端縁同士の間隔が広がる方向のみに膨張するものとしてもよい。即ち、耐火材１５の膨張により分割体３１同士が外方へ拡がった場合に、分割体３１の端縁同士の間の隙間のみを閉鎖できるように、分割体３１の拡がる方向のみに膨張するものとしてもよい。このように構成した場合、全ての方向へ膨張するパテ３４を使用する場合と比較してパテ３４の費用コストを抑えることができる。
【００６９】
加えて、各分割体３１の係止爪２０の代わりに、分割体３１の外周面全体に外方へ突出する鍔部を形成し、その鍔部を遮断手段としてもよい。鍔部を遮断手段としたとき、耐火膨張材１８と併用又は耐火膨張材１８を省略してもよく、さらには、突片１７を省略してもよい。
【００７０】
・　第１及び第２の実施形態において、突片１７及び折り曲げ片２６を省略して突出部を省略してもよい。
・　第１及び第２の実施形態において、耐火膨張材１８を省略するとともに、筒本体１６，２３の周方向に沿って、同筒本体１６，２３の周壁を貫通する透孔を複数箇所に形成する。そして、万一火災が発生した場合、前記透孔を通過し、さらに、貫通筒体１４，２２の外周面で膨張した耐火材１５を遮断手段として熱伝播空間Ｓを遮断してもよい。
【００７１】
・　第２の実施形態において、係止突片２７の代わりに筒本体２３の周方向全体から外方へ延びる鍔部を形成して遮断手段としての閉塞体としてもよい。このように構成した場合、貫通筒体２２を貫通孔１３内へ挿入した状態で、貫通孔１３は防火区画床２１の上面側、即ち防火区画床２１外面に設けられた鍔部により上側から閉塞され熱伝播空間Ｓの開口が遮断される。また、鍔部を貫通筒体２２とは別に設ける場合と比較して、貫通筒体２２の運搬性や施工性を高めることができる。さらに、前記鍔部と、耐火膨張材１８とを併用してもよい。このとき、耐火膨張材１８は防火区画床２１の上面側として、貫通孔２１ａ内における防火区画床２１の上部側を遮断し、さらに鍔部により防火区画床２１の上面が閉塞される。なお、耐火膨張材１８を省略して、鍔部のみにより遮断手段を形成してもよい。
【００７２】
・　第２の実施形態において、貫通筒体２２を貫通孔２１ａ内に設置した状態で、熱伝播空間Ｓの上面開口を貫通筒体２２とは別体の遮断手段としての閉塞体により閉塞してもよい。例えば、閉塞体としての円環状をなす金属板を、防火区画床２１の外面としての上面に取り付け、その金属板により前記開口を閉塞してもよい。なお、金属板を遮断手段として使用したとき、耐火膨張材１８との協働により熱伝播空間Ｓを遮断してもよく、耐火膨張材１８を省略してもよい。このように構成した場合、遮断手段による熱伝播空間Ｓの一部を遮断する効果を確実に発揮させることができるとともに、遮断手段を容易に形成することができる。
【００７３】
・　各実施形態では、筒本体１６，２３の内周面に耐火材１５を予め塗布したが、貫通構造を形成する際に、筒本体１６，２３の内周面に耐火材１５を塗布してもよい。
【００７４】
・　各実施形態では、筒本体１６，２３の外周面に耐火膨張材１８を予め塗布したが、貫通構造を形成する際に、筒本体１６，２３の外周面又は貫通孔１３の内周面に耐火膨張材１８を塗布してもよい。
【００７５】
・　第１の実施形態では、筒本体１６の中央部の外周面に耐火膨張材１８を塗布したが、筒本体１６の中央部より各端部側へ若干移動した位置の外周面に耐火膨張材１８を塗布してもよい。第２の実施形態では、筒本体２３の上端側の外周面に耐火膨張材１８を塗布したが、筒本体２３の上端より下端側へ若干移動した位置の外周面に耐火膨張材１８を塗布してもよい。
【００７６】
・　図９に示す貫通筒体３５を使用して防火区画壁１１に貫通構造を形成してもよい。前記貫通筒体３５は金属材料より略円筒状に形成された筒本体３６を備え、同筒本体３６内にケーブル１２を挿通可能に形成されている。筒本体３６の外径は、前記貫通孔１３の直径より小さく形成されている。筒本体３６の中央部には周方向に沿って連続して延びる鍔部３７が遮断手段として形成されている。筒本体３６の両端部の内周面には耐火材１５が塗布されている。なお、この貫通筒体３５には突出部が形成されていない。
【００７７】
そして、建築物の外側から防火区画壁１１の貫通孔１３内に貫通筒体３５の一端側（図９では左端側）を挿入し、前記鍔部３７から貫通孔１３の開口縁部に固定部材３８を固定することにより貫通筒体３５が防火区画壁１１に設置される。このとき、貫通筒体３５の左側半分が貫通孔１３内に配置され、右側半分が防火区画壁１１の外面より外方へ突出して、屋外に露出されている。
【００７８】
また、固定部材３８により鍔部３７が防火区画壁１１に固定されるため、熱伝播空間Ｓが周方向全体に亘ってほぼ同じ幅に維持されているとともに、貫通筒体３５が貫通孔１３内にほぼ水平に設置されている。さらに、貫通孔１３内に設置された貫通筒体３５内にケーブル１２が挿通され、そのケーブル１２は防火区画壁１１を貫通する状態となる。
【００７９】
・　第２の実施形態において、難燃材２５を省略してもよい。また、筒本体２３の一端側の内周面に、難燃材２５の代わりに耐火材１５を塗布してもよい。
・　各実施形態において、耐火膨張材１８を省略し、熱伝播空間Ｓ内を遮断可能とする金属リング、円環状をなす金属板、難燃性材料よりなるリング部材等を遮断手段として貫通孔１３，２１ａ内に設置し、それら遮断手段により熱伝播空間Ｓを予め遮断しておいてもよい。
【００８０】
・　各実施形態では挿通体としてケーブル１２に具体化したが、電線管、空調管、さや管等を挿通体としてもよい。
・　各実施形態では、火災の熱により耐火膨張材１８が膨張する場合について記載したが、火災ではなく、油に引火した火、煙等から発生した熱により耐火膨張材１８は膨張する。
【００８１】
次に上記実施形態及び別例から把握できる技術的思想について、それらの効果とともに以下に追記する。
（１）半筒状をなす分割体を組み合わせて形成されていることを特徴とする請求項９〜請求項１４のいずれか一項に記載の防火区画体の貫通構造を形成する貫通筒体。このように構成した場合、挿通体を貫通孔内に挿通した後に、貫通筒体を貫通孔内に設置することができる。そのため、貫通構造を形成する順序等を考慮する必要がなく、作業性を高めることができる。
【００８２】
（２）前記貫通筒体の外周面と貫通孔の内周面との間には、熱によって膨張する材料よりなる耐火膨張材が設けられ、当該耐火膨張材と、前記閉塞体とにより遮断手段が設けられていることを特徴とする請求項６又は請求項７に記載の防火区画体の貫通構造。このように構成した場合、閉塞体と耐火膨張材との協働により、熱伝播空間を遮断する効果を確実に発揮させることができる。
【００８３】
【発明の効果】
以上詳述したように、請求項１に記載の発明によれば、防火区画体内に位置する耐火材を速やかに膨張させることができ、防火区画体における防火効果を効果的に発揮させることができる。
【００８４】
請求項２に記載の発明によれば、請求項１に記載の発明の効果に加え、遮断手段が防火区画床の下側に設けられている場合と比較して、熱伝播空間内を熱を効率良く伝播させることができる。
【００８５】
請求項３に記載の発明によれば、請求項１に記載の発明の効果に加え、遮断手段が貫通筒体のいずれかの端部側に設けられ、その遮断手段が設けられた端部側で火災等が発生した場合に、遮断手段により熱伝播空間へ熱の伝播効率が低下してしまう虞をなくすことができる。
【００８６】
請求項４に記載の発明によれば、請求項１〜請求項３のいずれか一項に記載の発明の効果に加え、熱伝播空間を効率良く遮断することができる。
請求項５に記載の発明によれば、請求項４に記載の発明の効果に加え、耐火膨張材を速やかに膨張させて熱伝播空間を速やかに遮断することができる。
【００８７】
請求項６に記載の発明によれば、請求項２に記載の発明の効果に加え、遮断手段を容易に形成することができる。
請求項７に記載の発明によれば、請求項６に記載の発明の効果に加え、閉塞体を貫通筒体とは別に設ける場合と比較して、貫通筒体の運搬性や施工性を高めることができる。
【００８８】
請求項８に記載の発明によれば、請求項１〜請求項７のいずれか一項に記載の発明の効果に加え、貫通筒体の外周面が貫通孔の内周面に接触して熱伝播空間が狭くなる不具合を防止することができ、熱伝播空間による熱の伝播作用を確実に発揮させることができる。
【００８９】
請求項９に記載の発明によれば、防火区画体内に位置する耐火材を速やかに膨張させることができ、防火区画体における防火効果を効果的に発揮させることができる。
【００９０】
請求項１０に記載の発明によれば、請求項９に記載の発明の効果に加え、耐火膨張材を速やかに膨張させて熱伝播空間を速やかに遮断することができる。
請求項１１に記載の発明によれば、請求項９又は請求項１０に記載の発明の効果に加え、外周面が貫通孔の内周面に接触して熱伝播空間が狭くなる不具合を防止することができ、熱伝播空間による熱の伝播作用を確実に発揮させることができる。
【００９１】
請求項１２に記載の発明によれば、請求項９〜請求項１１のいずれか一項に記載の発明の効果に加え、貫通構造の形成場所で耐火材を塗布等により設ける場合と比較して、貫通構造の形成作業を容易に行うことができる。
【００９２】
請求項１３に記載の発明によれば、防火区画体内に位置する耐火材を速やかに膨張させることができ、防火区画体における防火効果を効果的に発揮させることができる。また、外周面が貫通孔の内周面に接触して熱伝播空間が狭くなる不具合を防止することができ、熱伝播空間による熱の伝播作用を確実に発揮させることができる。
【００９３】
請求項１４に記載の発明によれば、請求項１３に記載の発明の効果に加え、貫通構造の形成場所で耐火材を塗布等により設ける場合と比較して、貫通構造の形成作業を容易に行うことができる。
【図面の簡単な説明】
【図１】第１の実施形態の貫通構造を示す断面図。
【図２】第１の実施形態の貫通筒体を示す斜視図。
【図３】耐火材及び耐火膨張材が膨張した状態を示す断面図。
【図４】第２の実施形態の貫通構造を示す断面図。
【図５】第２の実施形態の貫通筒体を示す斜視図。
【図６】耐火材及び耐火膨張材が膨張した状態を示す断面図。
【図７】別例の貫通筒体を示す分解斜視図。
【図８】（ａ）は別例の貫通筒体を貫通孔内に設置した状態を示す断面図、（ｂ）は耐火材及び耐火膨張材が膨張した状態を示す断面図。
【図９】別例の貫通筒体により貫通構造を形成した状態を示す断面図。
【符号の説明】
Ｓ…熱伝播空間、１１…防火区画体としての防火区画壁、１２…挿通体としてのケーブル、１３，２１ａ…貫通孔、１４，２２，３３，３５…貫通筒体、１５…耐火材、１７…突出部としての突片、１８…遮断手段としての耐火膨張材、２１…防火区画体としての防火区画床、２６…突出部としての折り曲げ片、３７…閉塞体としての鍔部。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is provided between an inner peripheral surface of a penetrating cylindrical body installed in a through hole penetrating a fire protection compartment such as a wall of a building and a floor, and an outer peripheral surface of a cable inserted into the penetrating cylindrical body. TECHNICAL FIELD The present invention relates to a penetration structure of a fire protection compartment for rapidly expanding a refractory material to be obtained, and a penetration cylinder forming the penetration structure.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a penetration structure such as a pipe or a cable has been penetrated and installed in a fire compartment wall as a fire compartment of a building, and a penetration structure has been formed in the fire compartment wall. The one disclosed in 4-95053 is known.
[0003]
In this penetration structure, a fixing member made of a metal material is inserted as a penetrating cylindrical body into a through hole provided in a fire protection partition wall, and a mortar is provided in a gap between an outer peripheral surface of the fixing device and an inner peripheral surface of the through hole. , Rock wool or the like. In addition, a long object such as a cable is inserted into the fixture so as to penetrate the fire protection partition wall, and a fireproof material is provided between an inner peripheral surface at both ends of the fixture and an outer peripheral surface of the long object. Is filled.
[0004]
In the event that a fire occurs in a building in which the above penetration structure is formed on the fire prevention partition wall, a fire spread path is formed between the outer peripheral surface of the fixture and the inner peripheral surface of the through hole by the mortar, rock wool or the like. Is prevented from becoming a smoke path. Further, the heat-foamable flame-resistant material foams due to heat of a fire, and the inside of the fixture is sealed by the foamed heat-foamable flame-resistant material. As a result, the spread of fire and the propagation of heat in the through-hole are interrupted, and the fire prevention effect on the fire prevention partition wall is exhibited.
[0005]
[Problems to be solved by the invention]
However, in the above-described conventional structure, only the heat-expandable flame-resistant material exposed from the inside to the outside at the end portion side of the fixture is directly heated by heat at the time of a fire. Since the space between the inner peripheral surface of the through hole and the outer peripheral surface of the fixture is filled with mortar or the like, the mortar is not exposed from the inside of the fixture to the outside, and the thermal foaming located in the fire protection partition wall is not performed. The flame-resistant material is heated from the outer peripheral side by the heat conducted from the end of the fixture to the center. That is, the heat-foamable flame-resistant material located in the fire protection partition wall gradually expands later than the heat-foamable flame-resistant material exposed to the outside.
[0006]
Therefore, when the speed of the fire spread of the cable is high, the heat-expandable flame-resistant material located in the fire compartment wall expands by the heat generated by the fire of the cable before expanding by the heat transmitted through the fixture. I will. As a result, the heat-expandable flame-resistant material expands before the cable spreads, and the inside of the fixture is sealed, so that it is impossible to prevent the cable from spreading, and the fire protection effect in the fire protection compartment may be reduced. There was a problem that there is.
[0007]
The present invention has been made by paying attention to the problems existing in the above conventional technology. The aim is to provide a penetration structure and a penetration structure for the fire protection compartment that can rapidly expand the refractory material located in the fire protection compartment and effectively exert the fire protection effect in the fire protection compartment. An object of the present invention is to provide a through cylinder to be formed.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 provides a through-hole made of a metal material installed in a through-hole penetrating the fire-prevention compartment in order to make the penetration body penetrate the fire-prevention compartment. A structure in which a penetrating body is inserted into the cylindrical body, and a refractory material for filling and sealing the penetrating cylindrical body in an expanded state is provided in a gap between an outer surface of the penetrating body and an inner peripheral surface of the penetrating cylindrical body. The fire prevention compartment body is provided with a through-hole structure. In the installation state of the through-hole cylinder, the outer peripheral surface of the through-hole cylinder is separated from the inner peripheral surface of the through-hole. A heat propagation space for transmitting heat generated is formed in the through-hole, and at least at the time of occurrence of a fire or the like, a blocking means for blocking the heat propagation space is provided in the through-hole or on the outer surface of the fireproof compartment. The penetrating cylinder is removed by the heat transmitted through the propagation space Heated from the side, heating the refractory material by heat conducted to the through-cylindrical body, and summarized in that inflating.
[0009]
According to a second aspect of the present invention, in the penetration structure for a fire-prevention compartment according to the first aspect, the penetrating cylinder is provided in a through-hole provided vertically through a fire-prevention compartment floor as a fire-prevention compartment. It is installed, and the gist is that the blocking means is provided on the upper surface side of the fire prevention compartment floor.
[0010]
According to a third aspect of the present invention, in the penetration structure for a fire-prevention compartment according to the first aspect, the penetrating cylinder is provided in a through-hole provided through the fire-prevention compartment wall as a fire-prevention compartment in a lateral direction. The gist is that the blocking means is provided between the inner peripheral surface of the central portion in the penetrating direction of the through hole and the outer peripheral surface of the through cylinder.
[0011]
According to a fourth aspect of the present invention, in the penetration structure of the fire protection compartment according to any one of the first to third aspects, the blocking means is a fire-resistant expansion material made of a material which expands by heat. Make a summary.
[0012]
According to a fifth aspect of the present invention, in the penetrating structure of the fire protection compartment according to the fourth aspect, the fire-resistant inflatable material is provided between an outer peripheral surface of the through cylinder and an inner peripheral surface of the through hole. Is the gist.
[0013]
According to a sixth aspect of the present invention, in the penetrating structure of the fire protection compartment according to the second aspect, the blocking means connects the opening of the heat propagation space formed on the upper surface side of the fire protection floor with the upper surface of the fire protection floor. The gist of the invention is that it is formed of a closing body that closes from the side.
[0014]
According to a seventh aspect of the present invention, in the penetrating structure for a fire protection compartment according to the sixth aspect, the closing body is formed by a flange portion projecting outward from the entire outer peripheral surface of one end of the penetrating cylindrical body. The point is that
[0015]
According to an eighth aspect of the present invention, in the penetration structure of the fire protection compartment according to any one of the first to seventh aspects, the outer surface of the through cylinder penetrates the outer peripheral surface of the through cylinder. The gist is that a projection is provided to maintain a state of being separated from the inner peripheral surface of the hole and to secure a heat propagation space.
[0016]
According to the ninth aspect of the present invention, in order to penetrate the fire-prevention compartment of the building, the penetrator is installed in a through-hole that penetrates the fire-prevention compartment, and the penetrator is inserted inside and the penetrator In the gap between the outer surface of the fire-resistant compartment is provided with a refractory material that seals the interior in an expanded state, thereby forming a penetration structure of the fireproof compartment body, in the installation state in the through-hole, The outer diameter is formed smaller than the diameter of the through hole so that the outer peripheral surface is separated from the inner peripheral surface of the through hole, and a heat propagation space is formed between the inner peripheral surface of the through hole and the inner surface of the through hole to propagate heat generated by a fire or the like. In addition, at least at the time of occurrence of a fire or the like, a shutoff means for shutting off the heat propagation space is provided, and the heat is propagated from the heat propagation space from the outer peripheral surface side, and the heat transmitted from the outer peripheral surface side is used for the fireproofing. The point is that the material is heated and expanded .
[0017]
According to a tenth aspect of the present invention, in the penetrating cylinder forming the penetrating structure of the fire protection compartment according to the ninth aspect, a fire-resistant inflatable material made of the material that expands by heat is provided on an outer peripheral surface as the blocking means. The gist is that
[0018]
According to an eleventh aspect of the present invention, in the through-tube body forming the penetration structure of the fire-prevention compartment according to the ninth or tenth aspect, a state in which an outer peripheral surface is separated from an inner peripheral surface of the through hole is maintained. The gist is that a protruding portion for securing a heat propagation space is provided on the outer surface.
[0019]
According to a twelfth aspect of the present invention, in the penetrating cylinder forming the penetrating structure of the fire protection compartment according to any one of the ninth to eleventh aspects, the refractory material is provided in advance on an inner peripheral surface. The point is that
[0020]
The invention according to claim 13 is provided in a through-hole penetrating the fire-prevention compartment to penetrate the fire-prevention compartment of a building. In the gap between the outer surface of the, a fire-resistant material that fills and seals the inside in an expanded state is provided to form a penetration structure of the fire-prevention compartment body, and in the installation state in the through-hole, The outer diameter is formed smaller than the diameter of the through hole so that the outer peripheral surface is separated from the inner peripheral surface of the through hole, and a heat propagation space for transmitting heat generated by a fire or the like is formed between the outer peripheral surface and the inner peripheral surface of the through hole. A protrusion is formed on the outer surface of the through hole to secure the heat propagation space while maintaining a state in which the outer peripheral surface is separated from the inner peripheral surface of the through hole, and the outer peripheral surface is formed by heat transmitted through the heat propagation space. Side, and heat conducted from the outer peripheral side Fire material heating and gist to be inflated.
[0021]
According to a fourteenth aspect of the present invention, in the penetrating cylinder forming the penetrating structure of the fire protection compartment according to the thirteenth aspect, the refractory material is provided in advance on an inner peripheral surface.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment)
Hereinafter, a first embodiment of a penetration structure of a fire protection compartment body embodying the present invention and a penetration cylinder forming the penetration structure will be described with reference to FIGS. 1 to 3.
[0023]
As shown in FIG. 1, the penetration structure in the fire compartment wall 11 as a fire compartment of a building is used to penetrate a cable 12 as an insertion body in a state where the fire prevention effect is imparted to the concrete fire compartment wall 11. Is formed. That is, in the penetration structure, the cable 12 is inserted into a penetration cylinder 14 installed in a penetration hole 13 penetrating the fire protection partition wall 11 in the lateral direction, and an outer surface of the cable 12 and an inner peripheral surface of the penetration cylinder 14 are provided. Is formed by providing a refractory material 15 for filling and sealing the inside of the penetrating cylinder 14 in an expanded state.
[0024]
As shown in FIG. 2, the penetrating cylindrical body 14 forming the penetrating structure includes a cylindrical main body 16 formed of a metal material into a substantially cylindrical shape, and as shown in FIG. 12 is formed so as to be inserted therethrough.
[0025]
The outer diameter of the cylinder main body 16 is formed smaller than the diameter of the through hole 13. Then, with the through-cylinder 14 installed in the through-hole 13, the outer peripheral surface of the cylinder main body 16 is separated from the inner peripheral surface of the through-hole 13, and the space formed by the separation is concentric with the cylindrical main body 16. The outer diameter of the cylinder main body 16 is set so that the heat propagation space S is formed.
[0026]
The radial length of the through hole 13 in the heat propagation space S, that is, the width of the heat propagation space S, may be set to at least 5 mm in order to efficiently transmit heat to the inside of the heat propagation space S. preferable. Note that the thickness of the heat propagation space S is not limited to at least 5 mm, and may be arbitrarily changed depending on the diameter of the through-hole 13, the thickness of the fire protection partition wall 11, the outer diameter of the tube main body 16, and the like.
[0027]
As shown in FIGS. 1 and 2, protrusions 17 are formed as protrusions on the outer peripheral surface of the cylinder main body 16, which protrude outward at equal intervals along the circumferential direction of the cylinder main body 16. The outer diameter at the leading edge of the hole 17 is also slightly smaller than the diameter of the through hole 13. The length of each protrusion 17 protruding outward is such that, even when the penetration cylinder 14 moves up and down, the projection 17 remains in the through hole 13 when the penetration cylinder 14 is installed in the through hole 13. The width of the entire heat propagation space S is set so as to be immediately brought into contact with the inner peripheral surface and to be maintained substantially the same. In addition, a gap that forms a heat propagation space S is formed between the projecting pieces 17 along the circumferential direction of the cylinder main body 16.
[0028]
Of the protruding pieces 17, a refractory inflatable material 18 as a blocking means is filled between the protruding pieces 17 located at the central portion in the length direction of the cylinder body 16 and adjacent along the length direction. ing. This refractory expansion material 18 expands in volume three to five times as much as before heating when it receives heat of 120 ° C. or more. Further, the refractory inflatable material 18 has a laminated structure, in which the layers expand and expand by heating, and the direction in which the layers expand is such that the outer peripheral surface of the refractory inflatable material 18 is separated from the outer peripheral surface of the cylinder body 16. 18 is set only in the direction in which the thickness increases.
[0029]
The inner peripheral surface of the cylinder body 16 is provided with a refractory material 15 made of the same material as the refractory inflatable material 18 in advance. The direction in which the refractory material 15 expands is set such that the direction in which the layers spread is only the direction in which the inner peripheral surface of the refractory material 15 is separated from the inner peripheral surface of the cylinder body 16 and the thickness of the refractory material 15 increases. . A plurality of locking claws 20 are formed at a plurality of locations at regular intervals on the outer peripheral surface on one end side (the right end side in FIGS. 1 and 2) of the tube main body 16.
[0030]
Then, as shown in FIG. 1, a penetrating cylinder 14 including a cylinder main body 16, a refractory material 15, a protruding piece 17 and a refractory inflatable material 18 is inserted into the through hole 13, and the locking claw 20 is inserted into the through hole 13. It is locked on the outer surface of the fire protection partition wall 11 which is the opening edge. Then, the tip of the projecting piece 17 located on the lower side of the cylinder main body 16 abuts on the inner peripheral surface of the through hole 13, and the through cylinder 14 is installed on the fire prevention partition wall 11 and installed in the through hole 13. Is done.
[0031]
In this installation state, the projecting piece 17 maintains the heat propagation space S at substantially the same width over the entire circumferential direction, and separates the outer peripheral surface of the cylindrical main body 16 from the inner peripheral surface of the through hole 13. A heat propagation space S is formed. Further, the refractory inflatable material 18 is located at a central portion of the through hole 13 in the penetrating direction, and the through cylinder 14 is installed substantially horizontally in the through hole 13.
[0032]
Furthermore, the cable 12 is disposed in a state where the cable 12 penetrates the fire protection partition wall 11 by inserting the cable 12 into the through cylinder 14 installed in the through hole 13. A slight gap is formed between the outer peripheral surface of the cable 12 inserted into the through-tube 14 and the inner peripheral surface of the refractory material 15.
[0033]
Next, the operation of the penetration structure of the fire prevention partition wall 11 formed by using the penetration cylinder 14 having the above configuration will be described.
Now, as shown in FIG. 1, in a building in which a penetration structure is formed in the fire protection partition wall 11, a fire or the like occurs on one side (the right side in FIG. 1) of the fire protection partition wall 11, and the cable 12 is covered. Suppose the part burned. Then, the heat generated by a fire or the like propagates in the heat propagation space S, and the refractory expansion material 18 is heated by the heat. At this time, the refractory expansion material 18 is provided between the inner peripheral surface of the through hole 13 and the outer peripheral surface of the penetrating cylinder 14 and is provided in the heat propagation space S. Therefore, as compared with the case where the refractory expansion material 18 is provided in the penetrating cylindrical body 14, the refractory expansion material 18 is quickly heated and expanded.
[0034]
As a result, as shown in FIG. 3, the refractory inflatable material 18 expands, and the expanded refractory inflatable material 18 causes the central portion of the inner peripheral surface of the through hole 13 in the penetrating direction and the center of the outer peripheral surface of the through cylindrical body 14. The heat propagation space S located between the first and second portions is hermetically closed over the entire circumference. That is, the heat propagation space S serves as a path for heat and smoke, and the inconvenience of transmitting heat and smoke to the other surface side (the left side surface in FIG. 1) of the fire protection partition wall 11 is eliminated.
[0035]
In addition, the portion of the refractory material 15 that is exposed to the outside from the right end portion of the penetrating cylinder 14 is directly heated by the heat generated by the fire, and almost simultaneously with the penetrating cylinder 14 protruding from the outer surface of the fire protection partition wall 11. Is heated by heat. Further, heat enters the through hole 13 from the heat propagation space S and further propagates through the heat propagation space S.
[0036]
At this time, since there is an interval between the projecting pieces 17 along the circumferential direction of the cylinder main body 16, the projecting piece 17 does not hinder the propagation of heat. Then, the heat transmitted through the heat propagation space S heats the penetrating cylinder 14 located in the fire protection partition wall 11 and located at the center of the penetrating cylinder 14 from the outer peripheral surface side, and conducts through the penetrating cylinder 14. The refractory material 15 is heated by the applied heat.
[0037]
As a result, in the refractory material 15 located on the right side of the penetrating cylindrical body 14, not only the portion exposed to the outside but also the portion located in the fire protection partition wall 11 is quickly heated and expanded. Then, the expanded refractory material 15 quickly fills and seals the right inside of the penetrating cylinder 14, and the cable 12 located in the inside is buried in the refractory material 15. Further, the refractory material 15 on the left side of the refractory expansion material 18 is heated by the heat conducted through the cylinder body 16 and expands.
[0038]
Therefore, when the cable 12 is buried in the refractory material 15, there is no oxygen around the cable 12, preventing further spread of the cable 12 in the through-tube 14 and preventing the cable 12 from spreading in the through-tube 14. The propagation of heat, the passage of smoke, and the like are prevented, and the fire prevention effect on the fire prevention partition wall 11 is exhibited.
[0039]
According to the first embodiment, the following effects are exhibited.
(1) Even if a fire occurs in a building in which a penetration structure is formed in the fire prevention partition wall 11, heat is propagated into the through hole 13 by the heat propagation space S, and the heat transmission space S is located in the fire prevention partition wall 11, The refractory material 15 that is not exposed to the outside of the through cylinder 14 can also be quickly expanded to seal the inside of the through cylinder 14. Therefore, the refractory material 15 expands before the cable 12 spreads, and the expanded refractory material 15 can prevent the cable 12 from spreading further. Can be effectively demonstrated.
[0040]
(2) The refractory expansion material 18 and the refractory material 15 are attached to the outer peripheral surface and the inner peripheral surface of the cylinder body 16 in advance. Therefore, when the penetration structure is formed in the fire protection partition wall 11, the work of applying the fireproof expansion material 18 and the fireproof material 15 to the cylinder main body 16 at the formation site becomes unnecessary, and the time required for forming the penetration structure is reduced. Can be.
[0041]
(3) The projecting piece 17 can prevent the fire-resistant inflatable material 18 provided on the outer peripheral surface of the cylinder body 16 from being displaced along the length of the cylinder body 16. Therefore, it is possible to maintain the state in which the refractory inflatable material 18 is installed at the central portion in the length direction of the penetrating cylindrical body 14.
[0042]
(4) By expanding the refractory expansion material 18, the heat propagation space S can be quickly shut off, and the possibility that the through-hole 13 becomes a path for heat and smoke can be eliminated. Therefore, the fire prevention effect by the fire prevention partition wall 11 can be exhibited.
[0043]
(5) The heat propagation space S can be cut off by the fire-resistant expansion material 18 at the center of the through hole 13 in the penetration direction. Accordingly, when the fire-resistant expansion material 18 is provided at one end of the penetrating cylindrical body 14 and a fire occurs at the end where the fire-resistant expansion material 18 is provided, the expansion of the fire-resistant expansion material 18 causes heat. It is possible to eliminate the possibility that the heat propagation efficiency in the propagation space S is reduced. As a result, even if a fire occurs from any end side of the through-tube body 14, the effect of heat propagation by the heat propagation space S can be exhibited.
[0044]
(6) The blocking means is constituted by the refractory expanding material 18 which expands by heating. Therefore, when a fire occurs, the refractory inflatable material 18 expands quickly and surely, and can quickly and reliably shut off the heat propagation space S.
[0045]
(7) Since the tip of the protruding piece 17 abuts on the inner peripheral surface of the through-hole 13, the outer peripheral surface of the cylindrical main body 16 and the inner peripheral surface of the through-hole 13 can be maintained in a state of being separated by a constant width. . Therefore, it is possible to reliably exert the heat propagation action over the entire circumference of the heat propagation space S without generating a position where the heat propagation space S becomes unevenly narrow.
[0046]
(8) The refractory inflatable material 18 is provided between the inner peripheral surface of the through hole 13 and the outer peripheral surface of the through cylinder 14 and is provided in the heat propagation space S. Therefore, as compared with the case where the refractory expansion material 18 is provided in the penetrating cylindrical body 14, the refractory expansion material 18 is quickly heated and expanded. Therefore, the heat propagation space S can be quickly shut off by the refractory expansion material 18.
[0047]
(Second embodiment)
Hereinafter, a second embodiment of a penetration structure of a fire protection compartment body embodying the present invention and a penetration cylinder forming the penetration structure will be described with reference to FIGS. Note that the second embodiment has a configuration in which only the fire protection compartment and the through-bore of the first embodiment are changed, and a detailed description of the same parts will be omitted.
[0048]
As shown in FIG. 4, the fire prevention compartment in the second embodiment is a concrete fire prevention floor 21 formed on a building, and the fire prevention floor 21 has a through hole 21 a penetrating in the up-down direction. Is formed. The penetrating cylinder 22 includes a cylinder main body 23 formed of a metal material into a substantially cylindrical shape, and is formed so that the cable 12 can be inserted into the cylinder main body 23.
[0049]
The outer diameter of the cylinder main body 23 is formed smaller than the diameter of the through hole 21a. That is, the outer diameter of the cylinder main body 23 is such that when the penetrating cylinder 22 is installed in the through hole 21a, the outer peripheral surface of the cylinder main body 23 is separated from the inner peripheral surface of the through hole 21a, and the cylinder main body 23 is placed in the separated space. The heat transfer space S is formed so as to form a concentric heat propagation space S.
[0050]
As shown in FIGS. 4 to 6, on the inner peripheral edge of one end (the upper end in FIGS. 4 to 6) of the cylinder main body 23, claw pieces 24 protruding inward of the cylinder main body 23 are formed at four locations at equal intervals. Have been. As shown in FIGS. 5 and 6, a flame-retardant material 25 such as a putty is provided on the inner peripheral surface on one end side of the cylinder main body 23. Is prevented from falling off.
[0051]
On the peripheral wall on one end side and the other end side (lower end in FIGS. 4 to 6) from the center of the cylindrical main body 23, bent pieces 26 formed by bending the peripheral wall of the cylindrical main body 23 outward are formed as projecting parts. It is provided at a plurality of locations along the circumferential direction of the cylinder main body 23. The outer diameter at the leading edge of each bent piece 26 is also formed slightly smaller than the diameter of the through hole 21a.
[0052]
In addition, when the penetrating piece 26 is installed in the through-hole 21a in the through-hole 21a, even if the penetrating cylindrical body 22 moves in the lateral direction, the bending piece 26 is protruded from the inner peripheral surface of the through-hole 21a. The width of the entire heat propagation space S is set so as to be brought into immediate contact and the width of the entire heat propagation space S is kept substantially equal.
[0053]
Further, the bent pieces 26 at one end of the cylinder main body 23 are formed in two stages in the length direction of the cylinder main body 23. The refractory inflatable material 18 is provided as a blocking means along the circumferential direction of the cylinder main body 23 between the bent pieces 26 located at the two stages. That is, the refractory expansion material 18 is positioned by the bent piece 26 so as not to move along the length direction of the cylinder main body 23.
[0054]
Between the bent pieces 26 located on the upper end side of the cylinder main body 23, there are provided locking projections 27 formed by bending the peripheral wall of the cylinder main body 23 outward. Further, a refractory material 15 similar to that of the first embodiment is applied to the inner peripheral surface of the cylinder main body 23 and provided.
[0055]
Then, as shown in FIG. 4, the penetrating cylindrical body 22 is inserted into the through-hole 21a, and the locking projection 27 is engaged with the opening edge of the through-hole 21a, so that the penetrating cylindrical body 22 is Installed in Also at this time, the heat propagation space S is maintained at substantially the same width over the entire circumferential direction by the bent pieces 26, and the penetrating cylindrical body 22 is disposed substantially vertically in the through hole 21a. Further, the cable 12 is inserted into the through-tube body 22 installed in the through-hole 21 a, and the cable 12 penetrates the fire-prevention section floor 21.
[0056]
A slight gap is formed between the outer peripheral surface of the cable 12 and the inner peripheral surface of the refractory material 15. When the penetrating cylinder 22 is installed on the fire protection compartment floor 21, a heat propagation space S is formed to form a penetrating structure. Further, a fire-resistant expansion material 18 is provided as a blocking means above the through hole 21a on the upper surface side of the fire protection compartment floor 21.
[0057]
Now, in a building in which the penetration structure shown in FIG. 4 is formed in the fire compartment floor 21, if a fire occurs below the fire compartment floor 21, the heat generated by the fire moves the heat propagation space S from the lower side to the upper side. Propagating towards Then, the refractory expansion material 18 is heated by the heat, and the refractory expansion material 18 expands as shown in FIG. Then, a part of the heat propagation space S located between the inner peripheral surface on the upper surface side of the fire protection compartment floor 21 and the upper end portion of the outer peripheral surface of the penetration cylindrical body 22 in the through hole 21 a by the expanded fire resistant expansion material 18. Is hermetically closed. Further, the outer surface of the cable 12 protruding from the upper surface of the fire prevention compartment floor 21 is protected by the flame retardant 25.
[0058]
Further, the refractory material 15 exposed to the outside from the lower end portion of the penetrating cylindrical body 14 is directly heated by the heat generated by the fire. At substantially the same time, due to the heat propagated in the heat propagation space S, not only the exposed portion of the refractory material 15 located below the penetrating cylinder 22 but also the portion located in the fire protection compartment floor 21 is quickly. Heated and expanded.
[0059]
The expanded refractory material 15 fills and seals the lower side of the penetrating cylindrical body 22 before the cable 12 spreads upward, thereby preventing the cable 12 from spreading. Further, the propagation of heat, the passage of smoke, and the like in the heat propagation space S are prevented, and the fire prevention effect in the fire prevention compartment floor 21 is exhibited.
[0060]
Therefore, according to the second embodiment, the following features can be obtained in addition to the features described in the first embodiment.
In the second embodiment, a part of the heat propagation space S can be hermetically shut off on the upper surface side of the fire protection compartment floor 21 by the expansion of the fire resistant expansion material 18. Therefore, when the fire-resistant expansion material 18 is provided on the lower surface side of the fire-prevention compartment floor 21, it is possible to eliminate the possibility that the expansion of the fire-resistant expansion material 18 lowers the efficiency of heat transmission to the entire heat propagation space S.
[0061]
In addition, each embodiment may be changed as follows.
-As shown in FIG. 7, you may use the penetration cylindrical body 33 formed by combining the division | segmentation body 31 which makes a semi-cylindrical shape. More specifically, the divided body 31 is formed in a semi-cylindrical shape from a metal material, and the outer peripheral surface has the same protruding pieces 17 as in the first embodiment, the fire-resistant inflatable material 18 between the protruding pieces 17, and the locking. A nail 20 is formed. Further, the same refractory material 15 as in the first and second embodiments is provided on the inner peripheral surface of each divided body 31.
[0062]
In order to form a penetration structure using the penetration cylinder 33, the cable 12 is inserted into the through-hole 13, and then the outer periphery of the cable 12 is inserted while each of the pair of divided bodies 31 is inserted into the through-hole 13. Attach to the surface. At this time, as shown in FIG. 8A, the gap formed between the edges along the length direction of the divided body 31 is filled with the flame-retardant putty 34.
[0063]
The putty 34 expands in all directions by heating. That is, it expands in the direction in which the edges of the divided body 31 are expanded and in the direction approaching the inner peripheral surface of the through hole 13. When the through cylinder 33 is mounted on the outer periphery of the cable 12 and the through cylinder 33 is installed in the through hole 13, the heat propagation space is formed between the outer peripheral surface of the through cylinder 33 and the inner peripheral surface of the through hole 13. S is formed, and a penetration structure is formed in the fire protection partition wall 11.
[0064]
When a fire occurs in a building in which the penetration structure is formed in the fire prevention partition wall 11, heat generated by the fire propagates through the heat propagation space S. Then, as shown in FIG. 8B, similarly to the first embodiment, the heat propagation space S is shut off by the expansion of the refractory expansion material 18, and the inside of the through-tube body 33 is expanded by the expansion of the refractory material 15. Hermetically closed.
[0065]
Due to the expansion of the refractory material 15 in the thickness direction, the interval between the outer peripheral surface of the cable 12 and the inner peripheral surface of each of the divided bodies 31 is widened, and each of the divided bodies 31 is outwardly expanded so that the outer diameter of the through cylindrical body 33 is increased. Extruded. At this time, the tips of the projecting pieces 17 respectively abut against the inner peripheral surface of the through hole 13, and the state in which the outer peripheral surface of the divided body 31 is separated from the inner peripheral surface of the through hole 13 is maintained. Secured.
[0066]
In addition, since the putty 34 expands due to heat generated by the fire, the expanded putty 34 fills the gap between the edges of each divided body 31. For this reason, no gap is formed between the edges of the divided bodies 31, and it is possible to prevent the gap between the divided bodies 31 from becoming a fire spread path or a smoke path. In addition, even after the cable 12 is inserted into the through-hole 13, the through-tube 33 can be installed in the through-hole 13. There is no need to consider the order of construction such as installation, and workability can be improved.
[0067]
Before the cable 12 is inserted into the through-hole 13, the through-tube 33 is attached to an arbitrary position of the cable 12, and a putty 34 is filled between the divided bodies 31, and then the through-hole 13 is inserted into the through-hole 13. May be inserted.
[0068]
Although the putty 34 that expands in all directions is used in the gap between the divided bodies 31, the putty 34 may be expanded only in the direction in which the interval between the edges of the divided body 31 increases. That is, when the divided bodies 31 expand outward due to the expansion of the refractory material 15, they expand only in the expanding direction of the divided bodies 31 so that only the gap between the edges of the divided bodies 31 can be closed. It may be. With this configuration, the cost of the putty 34 can be reduced as compared with the case where the putty 34 that expands in all directions is used.
[0069]
In addition, instead of the locking claw 20 of each divided body 31, a flange that protrudes outward may be formed on the entire outer peripheral surface of the divided body 31, and the flange may be used as blocking means. When the flange is used as the blocking means, it may be used together with the refractory inflatable material 18 or may omit the refractory inflatable material 18, and further, the protruding piece 17 may be omitted.
[0070]
-In 1st and 2nd embodiment, you may abbreviate | omit the protrusion 17 and the bending piece 26, and a protrusion may be omitted.
In the first and second embodiments, the fire-resistant expansion material 18 is omitted, and through holes are formed at a plurality of locations along the circumferential direction of the cylinder bodies 16 and 23, penetrating the peripheral walls of the cylinder bodies 16 and 23. I do. If a fire should occur, the heat propagation space S may be cut off by using the refractory material 15 that has passed through the through-holes and expanded on the outer peripheral surfaces of the penetrating cylinders 14 and 22 as a cutoff means.
[0071]
In the second embodiment, instead of the locking projection 27, a flange extending outward from the entire circumferential direction of the cylinder main body 23 may be formed to form a closing body as a blocking means. With this configuration, the through-hole 13 is closed from above by a flange provided on the upper surface of the fire protection compartment floor 21, that is, a flange provided on the outer surface of the fire protection compartment floor 21, in a state where the penetration cylindrical body 22 is inserted into the through-hole 13. The opening of the heat propagation space S is shut off. In addition, as compared with the case where the flange portion is provided separately from the through cylinder 22, the transportability and workability of the through cylinder 22 can be improved. Further, the flange portion and the refractory expansion material 18 may be used in combination. At this time, the refractory expansion material 18 serves as the upper surface side of the fire compartment floor 21 and blocks the upper side of the fire compartment floor 21 in the through hole 21a, and the upper surface of the fire compartment floor 21 is closed by the flange portion. It should be noted that the fireproof expansion material 18 may be omitted, and the blocking means may be formed only by the flange.
[0072]
In the second embodiment, the upper surface opening of the heat propagation space S is closed by a closing body as a blocking means separate from the through cylinder 22 in a state where the through cylinder 22 is installed in the through hole 21a. Is also good. For example, an annular metal plate as a closing body may be attached to the upper surface as the outer surface of the fire prevention compartment floor 21, and the opening may be closed by the metal plate. When a metal plate is used as the blocking means, the heat propagation space S may be blocked in cooperation with the fireproof expansion material 18 or the fireproof expansion material 18 may be omitted. In the case of such a configuration, the effect of blocking a part of the heat propagation space S by the blocking means can be reliably exhibited, and the blocking means can be easily formed.
[0073]
In each of the embodiments, the refractory material 15 is applied to the inner peripheral surfaces of the cylinder bodies 16 and 23 in advance, but the refractory material 15 is applied to the inner peripheral surfaces of the cylinder bodies 16 and 23 when forming the penetration structure. Is also good.
[0074]
In each embodiment, the refractory inflatable material 18 is applied in advance to the outer peripheral surfaces of the cylinder main bodies 16 and 23, but when forming the through structure, the outer peripheral surfaces of the cylinder main bodies 16 and 23 or the inner peripheral surfaces of the through holes 13 are formed. A fire resistant expansion material 18 may be applied.
[0075]
In the first embodiment, the fire-resistant inflatable material 18 is applied to the outer peripheral surface of the central portion of the cylinder main body 16, but the fire-resistant inflatable material 18 is applied to the outer peripheral surface at a position slightly moved from the central portion of the cylindrical body 16 to each end. 18 may be applied. In the second embodiment, the refractory inflatable material 18 is applied to the outer peripheral surface on the upper end side of the cylinder main body 23. However, the refractory inflatable material 18 is applied to the outer peripheral surface at a position slightly moved from the upper end of the cylinder main body 23 to the lower end side. You may.
[0076]
-The penetration structure may be formed in the fire protection partition wall 11 using the penetration cylinder 35 shown in FIG. The penetrating cylinder 35 includes a cylinder main body 36 formed in a substantially cylindrical shape from a metal material, and is formed so that the cable 12 can be inserted into the cylinder main body 36. The outer diameter of the cylinder main body 36 is formed smaller than the diameter of the through hole 13. A flange 37 extending continuously along the circumferential direction is formed at the center of the cylinder main body 36 as blocking means. The refractory material 15 is applied to the inner peripheral surfaces of both ends of the cylinder main body 36. Note that no projecting portion is formed on the through-tube 35.
[0077]
Then, one end side (the left end side in FIG. 9) of the penetrating cylindrical body 35 is inserted into the through hole 13 of the fire protection partition wall 11 from outside the building, and a fixing member is attached to the opening edge of the through hole 13 from the flange 37. By fixing 38, the penetrating cylindrical body 35 is installed on the fire protection partition wall 11. At this time, the left half of the penetrating cylinder 35 is disposed in the through hole 13, and the right half protrudes outward from the outer surface of the fire protection partition wall 11 and is exposed outdoors.
[0078]
In addition, since the flange portion 37 is fixed to the fire protection partition wall 11 by the fixing member 38, the heat propagation space S is maintained at substantially the same width over the entire circumferential direction, and the through cylinder 35 is It is installed almost horizontally. Further, the cable 12 is inserted into the through-bore 35 provided in the through-hole 13, and the cable 12 penetrates the fire-prevention section wall 11.
[0079]
-In the second embodiment, the flame retardant 25 may be omitted. Further, the refractory material 15 may be applied to the inner peripheral surface on one end side of the cylinder main body 23 instead of the flame retardant material 25.
In each of the embodiments, the fire-resistant expansion material 18 is omitted, and a metal ring that can block the heat propagation space S, an annular metal plate, a ring member made of a flame-retardant material, or the like is used as a blocking means. , 21a, and the heat propagation space S may be blocked in advance by the blocking means.
[0080]
In each embodiment, the cable 12 is embodied as an insert, but a conduit, an air-conditioning pipe, a sheath, or the like may be used as the insert.
-In each embodiment, the case where the refractory expandable material 18 expands due to the heat of the fire is described. However, the refractory expandable material 18 expands not due to the fire but due to the heat generated from the fire or smoke ignited by the oil.
[0081]
Next, technical ideas that can be grasped from the above embodiment and other examples will be additionally described below together with their effects.
(1) The penetration cylinder which forms the penetration structure of the fire prevention section according to any one of claims 9 to 14, wherein the penetration is formed by combining half-cylindrical divided bodies. In the case of such a configuration, after the insertion body is inserted into the through hole, the through cylinder can be installed in the through hole. Therefore, it is not necessary to consider the order of forming the penetrating structures and the like, and workability can be improved.
[0082]
(2) Between the outer peripheral surface of the penetrating cylinder and the inner peripheral surface of the through hole, there is provided a refractory inflatable material made of a material that expands by heat, and a blocking means is provided by the refractory inflatable material and the closing member. The penetration structure for a fire protection compartment according to claim 6 or 7, wherein a through hole is provided. In the case of such a configuration, the effect of blocking the heat propagation space can be reliably exhibited by cooperation between the closing body and the refractory expansion material.
[0083]
【The invention's effect】
As described in detail above, according to the first aspect of the invention, the refractory material located in the fire protection compartment can be quickly expanded, and the fire protection effect in the fire protection compartment can be effectively exhibited. .
[0084]
According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, in addition to the case where the blocking means is provided below the fire prevention compartment floor, heat is transmitted through the heat propagation space. It can be propagated efficiently.
[0085]
According to the third aspect of the present invention, in addition to the effects of the first aspect, the blocking means is provided at one end of the penetrating cylindrical body, and the end at which the blocking means is provided. In the case where a fire or the like occurs, it is possible to eliminate the possibility that the efficiency of heat transmission to the heat propagation space is reduced by the blocking means.
[0086]
According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, the heat propagation space can be efficiently shut off.
According to the fifth aspect of the invention, in addition to the effects of the fourth aspect, the refractory expandable material can be quickly expanded to quickly block the heat propagation space.
[0087]
According to the invention described in claim 6, in addition to the effect of the invention described in claim 2, the blocking means can be easily formed.
According to the invention described in claim 7, in addition to the effect of the invention described in claim 6, in addition to the case where the closing body is provided separately from the penetrating cylinder, the transportability and workability of the penetrating cylinder are improved. be able to.
[0088]
According to the invention as set forth in claim 8, in addition to the effect of the invention as set forth in any one of claims 1 to 7, the outer peripheral surface of the through cylinder is in contact with the inner peripheral surface of the through hole and heat is generated. The problem that the propagation space is narrowed can be prevented, and the effect of heat propagation by the heat propagation space can be reliably exhibited.
[0089]
According to the ninth aspect of the present invention, the refractory material located in the fire protection compartment can be quickly expanded, and the fire protection effect in the fire protection compartment can be effectively exhibited.
[0090]
According to the tenth aspect, in addition to the effect of the ninth aspect, it is possible to rapidly expand the refractory inflatable material and quickly block the heat propagation space.
According to the eleventh aspect, in addition to the effects of the ninth or tenth aspects, it is possible to prevent a problem that the heat propagation space is narrowed due to the outer peripheral surface being in contact with the inner peripheral surface of the through hole. Therefore, the heat propagation action by the heat propagation space can be reliably exhibited.
[0091]
According to the twelfth aspect of the invention, in addition to the effects of the ninth to eleventh aspects of the present invention, a refractory material is provided by coating or the like at the place where the penetration structure is formed. In addition, the operation of forming the through structure can be easily performed.
[0092]
According to the thirteenth aspect, the refractory material located in the fire protection compartment can be quickly expanded, and the fire protection effect in the fire protection compartment can be effectively exhibited. In addition, it is possible to prevent a problem that the heat propagation space is narrowed due to the outer peripheral surface being in contact with the inner peripheral surface of the through hole, and the heat propagation action by the heat propagation space can be reliably exhibited.
[0093]
According to the fourteenth aspect, in addition to the effect of the thirteenth aspect, the operation of forming the penetrating structure can be easily performed as compared with the case where the refractory material is provided at the place where the penetrating structure is formed by coating or the like. It can be carried out.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a penetration structure according to a first embodiment.
FIG. 2 is a perspective view showing a penetrating cylindrical body according to the first embodiment.
FIG. 3 is a cross-sectional view showing a state where a refractory material and a refractory expansion material are expanded.
FIG. 4 is a sectional view showing a penetration structure according to a second embodiment.
FIG. 5 is a perspective view showing a through cylinder according to a second embodiment.
FIG. 6 is a cross-sectional view showing a state where the refractory material and the refractory expansion material are expanded.
FIG. 7 is an exploded perspective view showing another example of a through cylinder.
FIG. 8A is a cross-sectional view showing a state in which another example of a penetrating cylindrical body is installed in a through-hole, and FIG. 8B is a cross-sectional view showing a state in which a refractory material and a refractory expansion material are expanded.
FIG. 9 is a cross-sectional view showing a state in which a penetration structure is formed by another penetration cylinder.
[Explanation of symbols]
S: heat propagation space, 11: fire protection partition wall as fire protection partition, 12: cable as insertion body, 13, 21a: through hole, 14, 22, 33, 35: through cylinder, 15: refractory material, 17 ... projecting pieces as projecting parts, 18 ... refractory inflatable material as blocking means, 21 ... fire-prevention section floors as fire-preventing section bodies, 26 ... bent pieces as projecting sections, 37 ... flanges as closing bodies.

Claims

In order to penetrate the fireproof compartment of the building, the penetrator is inserted into a metal material through-tube that is installed in a through hole that penetrates the fireproof compartment, and penetrates the outer surface of the insert. In the gap between the inner peripheral surface of the cylindrical body, the penetration structure of the fire protection compartment body configured by being provided with a refractory material that fills and seals the penetrating cylindrical body in an expanded state,
In the installation state of the through cylinder in the through hole, by separating the outer peripheral surface of the through cylinder from the inner peripheral surface of the through hole, a heat propagation space for transmitting heat generated by a fire or the like is formed in the through hole. In addition, a blocking means for blocking the heat propagation space at least in the event of a fire or the like is provided in the through hole or on the outer surface of the fire protection compartment, and the heat transmitted through the heat propagation space causes the through cylindrical body to move around the outer periphery. A penetration structure for a fireproof compartment, wherein the refractory material is heated and expanded by heat from the surface side, and the heat conducted through the penetration cylinder.

The penetrating cylindrical body is installed in a through-hole provided vertically penetrating a fire section floor as a fire section section, and the blocking means is provided on the upper surface side of the fire section floor. The penetration structure of the fire protection compartment according to claim 1.

The penetrating cylindrical body is installed in a through-hole that is provided so as to penetrate a fire-preventing partition wall as a fire-preventing partition in the lateral direction, and the blocking unit includes an inner peripheral surface at a central portion in a penetrating direction of the through-hole and a penetrating cylinder. The penetration structure for a fire protection compartment according to claim 1, wherein the penetration structure is provided between the fire prevention compartment and the outer peripheral surface of the body.

The penetration structure for a fire protection compartment according to any one of claims 1 to 3, wherein the blocking means is a refractory expansion material made of a material that expands by heat.

The penetration structure for a fireproof compartment according to claim 4, wherein the refractory inflatable material is provided between an outer peripheral surface of the through cylinder and an inner peripheral surface of the through hole.

3. The fire protection device according to claim 2, wherein the blocking unit is formed of a closing body that closes an opening of a heat propagation space formed on an upper surface side of the fire protection compartment floor from an upper surface side of the fire protection compartment floor. 4. The penetrating structure of the compartment.

The penetration structure of a fire prevention compartment according to claim 6, wherein the closing body is formed by a flange protruding outward from the entire outer peripheral surface of one end of the penetration cylindrical body.

On the outer surface of the penetrating cylindrical body, a protrusion is provided for maintaining a state in which the outer peripheral surface of the penetrating cylindrical body is separated from the inner peripheral surface of the through-hole to secure a heat propagation space. The penetration structure of a fire prevention compartment according to any one of claims 1 to 7.

In order to penetrate the penetrating body into the fire-prevention compartment of the building, it is installed in a through-hole penetrating the fire-prevention compartment, the penetrating body is inserted inside, and in the gap between the outer surface of the penetrating body, A penetrating cylindrical body that forms a penetrating structure of a fireproof compartment by being provided with a refractory material that seals the inside in an expanded state,
In the installation state in the through-hole, the outer diameter is formed smaller than the diameter of the through-hole so that the outer peripheral surface is separated from the inner peripheral surface of the through-hole. While forming a heat propagation space for transmitting the generated heat, at least at the time of the occurrence of a fire or the like, a blocking means for blocking the heat propagation space is provided, and the heat transmitted from the heat propagation space is heated from the outer peripheral surface side, A penetration cylinder for forming a penetration structure of a fire protection compartment, wherein the refractory material is heated and expanded by heat conducted from the outer peripheral surface side.

10. The penetration cylinder body for forming a penetration structure of a fire protection compartment according to claim 9, wherein a refractory inflatable material made of the material that expands by heat is provided on an outer peripheral surface as the blocking means.

The protrusion for securing a heat propagation space while maintaining a state where the outer peripheral surface is separated from the inner peripheral surface of the through hole is provided on the outer surface. A through-tube that forms a through-structure of the fire protection compartment.

The penetrating cylinder for forming a penetration structure of a fireproof compartment according to any one of claims 9 to 11, wherein the refractory material is provided on an inner peripheral surface in advance.

In order to penetrate the penetrating body into the fire-prevention compartment of the building, it is installed in a through-hole penetrating the fire-prevention compartment, the penetrating body is inserted inside, and in the gap between the outer surface of the penetrating body, A penetrating cylindrical body that forms a penetrating structure of a fire protection compartment by being provided with a refractory material that fills and seals the inside in an expanded state,
In the installation state in the through-hole, the outer diameter is formed smaller than the diameter of the through-hole so that the outer peripheral surface is separated from the inner peripheral surface of the through-hole. While forming a heat propagation space for transmitting the generated heat, a protrusion for securing the heat propagation space while maintaining a state where the outer peripheral surface is separated from the inner peripheral surface of the through hole is provided on the outer surface, A through-hole body forming a through structure of a fire-prevention compartment, wherein the refractory material is heated and expanded by heat from the outer peripheral surface side by heat transmitted through the heat propagation space, and heat conducted from the outer peripheral surface side; .

The through-hole cylinder according to claim 13, wherein the refractory material is provided in advance on an inner peripheral surface.