公开(公告)号：US09322737B2

公开(公告)日：2016-04-26

申请号：US14478972

申请日：2014-09-05

Applicant: ABB Technology Ltd

Inventor： Anders Holmberg ,  Anna Brorsson ,  Bengt Asplund ,  Jonas Persson ,  Mattias Lundborg

IPC: G01M3/32 ,  G01M3/18 ,  G01M3/22 ,  H01B17/36 ,  G01R31/02 ,  H01B17/14

CPC classification number: G01M3/183 ,  G01M3/22 ,  G01R31/02 ,  H01B17/14 ,  H01B17/36

Abstract: An insulator for separating two objects with different electrical potential, the insulator including an insulating body enclosing a first volume for housing a gas, the body being provided with an opening, and a sealing arrangement arranged to seal the opening in the body and including a first gas-tight sealing element for sealing the opening and provided with a first closable opening, and a second gas-tight sealing element for sealing the opening, and arranged inside the first sealing element so that the first and second sealing elements define a second volume significantly smaller than the first volume. The second sealing element is provided with a second closable opening which in cooperation with the first closable opening enable control of the gas pressure in the first volume. Methods for leakage detection of the insulator are also disclosed.

Abstract translation: 一种用于分离具有不同电势的两个物体的绝缘体，所述绝缘体包括封闭用于容纳气体的第一容积的绝缘体，所述主体设置有开口，以及密封装置，其设置成密封所述主体中的开口，并且包括第一 用于密封开口并设置有第一可关闭开口的气密密封元件和用于密封开口的第二气密密封元件，并且布置在第一密封元件的内部，使得第一和第二密封元件明显地限定第二体积 小于第一卷。 第二密封元件设置有第二可关闭开口，其与第一可关闭开口配合使能控制第一容积中的气体压力。 还公开了绝缘体的泄漏检测方法。