FLUID SHUTOFF DEVICE AND FLUID SHUTOFF METHOD

• Main Author: SASAKI HIRONORI
• Format: Patent
• Language: English; Japanese
• Published: 25.11.2022
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

To provide a fluid shutoff device which can shut off fluid by smoothly inserting a shutoff bag into a fluid supply pipe, and can suppress a malfunction which damages the shutoff bag when withdrawing the shutoff bag from the fluid supply pipe.SOLUTION: There is provided a fluid shutoff device A which has a seal mechanism S inserted into a fluid supply pipe from a branch pipe, and shuts off a flow of a fluid of the fluid supply pipe by an expansion of a shutoff bag 24 of the seal mechanism S in a state in which the seal mechanism S is inserted into the fluid supply pipe. The seal mechanism S is constituted of a flexible and deformable flexible shaft 21, a tip side member 22 at a tip side part of the flexible shaft 21, a base end side member 23 at a base end part of the flexible shaft 21, and the shutoff bag 24 in a position surrounding the flexible shaft 21 between the tip side member 22 and the base end side member 23.SELECTED DRAWING: Figure 1 【課題】流体供給管の内部に閉塞バッグを円滑に挿入して流体の遮断を行い、閉塞バッグを流体供給管から引き出す際に、閉塞バッグを傷める不都合を抑制できる流体遮断装置を構成する。【解決手段】分岐管から流体供給管に挿入されるシール機構Ｓを有し、シール機構Ｓを流体供給管に挿入した状態でシール機構Ｓの閉塞バッグ２４の膨張により流体供給管の流体の流れを遮断する流体遮断装置Ａを構成する。シール機構Ｓが、撓み変形可能なフレキシブルシャフト２１と、フレキシブルシャフト２１の先端部の先端側部材２２と、フレキシブルシャフト２１の基端部の基端側部材２３と、先端側部材２２と基端側部材２３との間でフレキシブルシャフト２１を取り囲む位置の閉塞バッグ２４とで構成されている。【選択図】図１