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    • 8. 发明授权
    • Device for preventing leakage at pipe joints
    • 管接头防止泄漏的装置
    • US4346922A
    • 1982-08-31
    • US132543
    • 1980-03-21
    • Hisao OhtsugaKoji UzawaTakashi KamuroSusumu SudoTomoyoshi HiroseMasafumi MiyaoMotoyuki Koga
    • Hisao OhtsugaKoji UzawaTakashi KamuroSusumu SudoTomoyoshi HiroseMasafumi MiyaoMotoyuki Koga
    • F16L55/163F16L21/00
    • F16L55/163Y10S285/915
    • This device comprises a cylindrical member integrally made of an elastic material for covering the inside periphery of a pipe joint, belt members impregnated with a bonding agent to be squeezed out by pressure, and circular expanding members for expanding said cylindrical member when positioned inside the cylindrical member and subsequently expanded. The respective belt members are wound around the outside peripheral surface of the cylindrical member at its longitudinal ends and the respective expanding members are brought into contact with the inside peripheral surface of the cylindrical member at both its longitudinal ends, so that by radially expanding the cylindrical member at both its longitudinal ends by the respective expanding members, the respective belt members are pressed against the inside peripheral portions of the pipes on both sides of the joint for squeezing out the bonding agent from the belt members by such pressure and thereby attaining an airtight and watertight bonding between the outside peripheral surface of the cylindrical member at both its longitudinal ends and the inside peripheral surfaces of the pipes.
    • 该装置包括:一个由弹性材料制成的圆柱形构件,用于覆盖管接头的内周;浸渍有待压出的粘结剂的带构件;以及用于当圆柱形构件位于圆柱形 成员并随后扩大。 相应的带构件在其纵向端部缠绕在圆柱形构件的外周表面上,并且各个扩展构件在其两个纵向端部与圆筒构件的内周面接触,从而通过径向扩大圆柱形 通过相应的膨胀构件在其两个纵向端部处,相应的带构件被压靠在接头两侧的管的内周边部分中,以通过这种压力从带构件挤出粘合剂,从而实现气密 并且在其两个纵向端部处的圆柱形构件的外周表面和管的内周表面之间的水密结合。