A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WATERTIGHT STRUCTURE OF PIPE CONDUIT WATER CUTOFF DEVICE
PROBLEM TO BE SOLVED: To provide a watertight structure for always maintaining watertightness regardless of a water level.SOLUTION: A watertight structure of a pipe conduit water cutoff device 1 comprises a door body 5 for blocking up an opening 4a of a door stop 4 by instantly standing by buoyancy generated by water dammed up in an outer peripheral part of the door stop 4 by infiltrating into a pipe conduit 2. Watertight rubber 7 installed on an upstream side surface of the door stop 4 is constituted of low pressure watertight rubber 7a positioned so as to abut on the door body 5 just after standing in low water level time and high pressure watertight rubber 7b positioned so as to start to abut on the door body 5 after a water level rises when hardness is higher than this low pressure watertight rubber 7a.EFFECT: Watertightness is excellent from a stage of a low water level, and strong bearing power is provided in high water level time, and excessive collapsing of the low pressure watertight rubber is prevented, and thus, since water leakage by permanent set can also be prevented, excellent watertightness is always maintained, so that reliability of the pipe conduit water cutoff device is improved.SELECTED DRAWING: Figure 2
【課題】水位によらず常に良好な水密性が維持される水密構造を提供する。【解決手段】管路２内に浸入し、戸当り４の外周部に堰き止められた水によって生じる浮力により、瞬時に起立して戸当り４の開口４ａを塞ぐ扉体５を有する管路止水装置１の水密構造である。戸当り４の上流側の面に取り付けられた水密ゴム７は、低水位時、起立直後の扉体５と当接するように位置決めされた低圧用水密ゴム７ａと、この低圧用水密ゴム７ａよりも硬度が高く、水位が上昇した後に扉体５と当接し始めるように位置決めされた高圧用水密ゴム７ｂとで構成される。【効果】低水位の段階から水密性に優れ、高水位時には強い支持力が得られると共に、低圧用水密ゴムが過度に潰れるのを防止し、これにより永久歪みによる漏水も防止できるので、常に良好な水密性が維持されて管路止水装置の信頼性が向上する。【選択図】図２
WATERTIGHT STRUCTURE OF PIPE CONDUIT WATER CUTOFF DEVICE
PROBLEM TO BE SOLVED: To provide a watertight structure for always maintaining watertightness regardless of a water level.SOLUTION: A watertight structure of a pipe conduit water cutoff device 1 comprises a door body 5 for blocking up an opening 4a of a door stop 4 by instantly standing by buoyancy generated by water dammed up in an outer peripheral part of the door stop 4 by infiltrating into a pipe conduit 2. Watertight rubber 7 installed on an upstream side surface of the door stop 4 is constituted of low pressure watertight rubber 7a positioned so as to abut on the door body 5 just after standing in low water level time and high pressure watertight rubber 7b positioned so as to start to abut on the door body 5 after a water level rises when hardness is higher than this low pressure watertight rubber 7a.EFFECT: Watertightness is excellent from a stage of a low water level, and strong bearing power is provided in high water level time, and excessive collapsing of the low pressure watertight rubber is prevented, and thus, since water leakage by permanent set can also be prevented, excellent watertightness is always maintained, so that reliability of the pipe conduit water cutoff device is improved.SELECTED DRAWING: Figure 2
【課題】水位によらず常に良好な水密性が維持される水密構造を提供する。【解決手段】管路２内に浸入し、戸当り４の外周部に堰き止められた水によって生じる浮力により、瞬時に起立して戸当り４の開口４ａを塞ぐ扉体５を有する管路止水装置１の水密構造である。戸当り４の上流側の面に取り付けられた水密ゴム７は、低水位時、起立直後の扉体５と当接するように位置決めされた低圧用水密ゴム７ａと、この低圧用水密ゴム７ａよりも硬度が高く、水位が上昇した後に扉体５と当接し始めるように位置決めされた高圧用水密ゴム７ｂとで構成される。【効果】低水位の段階から水密性に優れ、高水位時には強い支持力が得られると共に、低圧用水密ゴムが過度に潰れるのを防止し、これにより永久歪みによる漏水も防止できるので、常に良好な水密性が維持されて管路止水装置の信頼性が向上する。【選択図】図２
WATERTIGHT STRUCTURE OF PIPE CONDUIT WATER CUTOFF DEVICE
管路止水装置の水密構造
KIMURA YUICHIRO (author) / MORI TOSHIAKI (author) / ITAGAKI NOBORU (author) / MIYAMOTO KUNIE (author) / NAKAHO KYOICHI (author)
2016-12-15
Patent
Electronic Resource
Japanese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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