A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
RECEPTACLE TYPE FIRE PROOF DOUBLE LAYER PIPE STORING FIRE-PROOF POWDER THERMAL EXPANSION RAW MATERIAL
PROBLEM TO BE SOLVED: To connect a fire-proof double layer pipe storing thermal expansion powder raw material therein with an incombustible pipe joint without using any supporting member.SOLUTION: This invention relates to a fire-proof double layer pipe comprising: a synthetic resin vertical drain pipe joint of which upper part is provided with a receptacle type connection end part for receiving a connection end part below an incombustible drain pipe joint passing through a floor slab in a vertical direction and having a rubber ring sealing between the receptacle type connection end part and the drain pipe joint installed therein; a band-like bag filled with fire-proof thermal expansion powder raw material arranged around an outer periphery of a narrow part of the receptacle type connection end part to close the connection end part through its expansion under heat of fire; a short-cylindrical fiber mixed mortar layer covering a peripheral surface of the receptacle type connection end part and the band-like bag; and a straight pipe made of fiber mixed mortar covering the vertical drain pipe. The peripheral surface of the fiber mixed mortar layer is covered by the fire-proof metallic cylinder for preventing damage of the mortar layer and the lower end surface of the fiber-mixed mortar layer is installed at the upper end surface of the straight pipe.SELECTED DRAWING: Figure 5
【課題】熱膨張性粉末原料を内蔵した耐火二層管を支持部材を用いることなく不燃性の管継手に接続する。【解決手段】床スラブを上下に貫通した不燃性の排水管継手の下方の接続端部を受容する受け口形の接続端部を上部に備え、受け口形の接続端部内には排水管継手との間をシールするゴムリングを備えた合成樹脂製の排水縦管と、火災の熱により膨張して該接続端部を閉塞すべく受け口形の接続端部のくびれ部の外周を周回して配設された耐火性熱膨張粉末原料を封入した帯状袋と、受け口形の接続端部の周面及び帯状袋を被覆する短筒状の繊維混入モルタル層と、排水縦管を被覆する繊維混入モルタル製の直管と、を有する耐火二層管であって、繊維混入モルタル層の周面を該モルタル層の破損を防止する耐火性の金属筒で覆い、繊維混入モルタル層の下端面を直管の上端面に載置した。【選択図】図５
RECEPTACLE TYPE FIRE PROOF DOUBLE LAYER PIPE STORING FIRE-PROOF POWDER THERMAL EXPANSION RAW MATERIAL
PROBLEM TO BE SOLVED: To connect a fire-proof double layer pipe storing thermal expansion powder raw material therein with an incombustible pipe joint without using any supporting member.SOLUTION: This invention relates to a fire-proof double layer pipe comprising: a synthetic resin vertical drain pipe joint of which upper part is provided with a receptacle type connection end part for receiving a connection end part below an incombustible drain pipe joint passing through a floor slab in a vertical direction and having a rubber ring sealing between the receptacle type connection end part and the drain pipe joint installed therein; a band-like bag filled with fire-proof thermal expansion powder raw material arranged around an outer periphery of a narrow part of the receptacle type connection end part to close the connection end part through its expansion under heat of fire; a short-cylindrical fiber mixed mortar layer covering a peripheral surface of the receptacle type connection end part and the band-like bag; and a straight pipe made of fiber mixed mortar covering the vertical drain pipe. The peripheral surface of the fiber mixed mortar layer is covered by the fire-proof metallic cylinder for preventing damage of the mortar layer and the lower end surface of the fiber-mixed mortar layer is installed at the upper end surface of the straight pipe.SELECTED DRAWING: Figure 5
【課題】熱膨張性粉末原料を内蔵した耐火二層管を支持部材を用いることなく不燃性の管継手に接続する。【解決手段】床スラブを上下に貫通した不燃性の排水管継手の下方の接続端部を受容する受け口形の接続端部を上部に備え、受け口形の接続端部内には排水管継手との間をシールするゴムリングを備えた合成樹脂製の排水縦管と、火災の熱により膨張して該接続端部を閉塞すべく受け口形の接続端部のくびれ部の外周を周回して配設された耐火性熱膨張粉末原料を封入した帯状袋と、受け口形の接続端部の周面及び帯状袋を被覆する短筒状の繊維混入モルタル層と、排水縦管を被覆する繊維混入モルタル製の直管と、を有する耐火二層管であって、繊維混入モルタル層の周面を該モルタル層の破損を防止する耐火性の金属筒で覆い、繊維混入モルタル層の下端面を直管の上端面に載置した。【選択図】図５
RECEPTACLE TYPE FIRE PROOF DOUBLE LAYER PIPE STORING FIRE-PROOF POWDER THERMAL EXPANSION RAW MATERIAL
耐火性の粉末熱膨張原料を内蔵した受け口形耐火二層管
KUBOTA HIROYUKI (author) / OKIDA SADAHARU (author)
2017-10-05
Patent
Electronic Resource
Japanese