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    • 61. 发明授权
    • Closure for pipes or pressure vessels and a seal therefor
    • 关闭管道或压力容器及其密封件
    • US4422651A
    • 1983-12-27
    • US974036
    • 1978-12-27
    • Douglas J. Platts
    • Douglas J. Platts
    • F16L55/10F16J13/10F16J13/12F16J13/24F16J15/02F16J15/06F16J15/12F17C13/06F16J15/34
    • F16J13/24F16J13/10F16J15/025F16J15/061F16J15/12Y10T292/214Y10T292/216
    • A closure for a pipe or pressure vessel comprises a door adapted to fit into an aperture in a pipe or pressure vessel and an arcuate locking member disposed around the periphery of the door for locking the door to the pipe or pressure vessel, the ends of the locking member being movable towards and away from each other to cause radial expansion and contraction of the locking member, whereby the locking member is brought into and out of locking engagement with the pipe or pressure vessel. A seal for the closure comprises a rigid, usually annular, support having first and second flanges for engaging respective opposed faces on the closure and the pipe or pressure vessel, the first flange having a greater surface area and being less flexible than the second flange, and a flexible lining carried by the support and extending beyond the terminal edges of the flanges.
    • 用于管道或压力容器的封闭件包括适于装配到管道或压力容器中的孔中的门和围绕门的周边设置的弓形锁定构件,用于将门锁定到管道或压力容器, 锁定构件能够朝向和远离彼此移动以引起锁定构件的径向膨胀和收缩,由此锁定构件进入和离开与管或压力容器的锁定接合。 用于封闭件的密封件包括刚性的,通常为环形的支撑件,其具有第一和第二凸缘,用于接合封闭件和管道或压力容器上的相应的相对面,第一凸缘具有更大的表面积并且比第二凸缘更不柔韧, 以及由支撑件承载并延伸超出凸缘的端部边缘的柔性衬里。