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1. 发明授权

US06315497B1 Joint for applying current across a pipe-in-pipe system 失效
标题翻译：通过管道管道系统施加电流的接头
公开(公告)号：US06315497B1
公开(公告)日：2001-11-13
申请号：US08997632
申请日：1997-12-23
申请人： Robert Henry Wittman , Ronald Marshall Bass , Carl Gottlieb Langner
发明人： Robert Henry Wittman , Ronald Marshall Bass , Carl Gottlieb Langner
IPC分类号： E03B710
CPC分类号： H05B3/42 , E21B17/015 , F16L1/00 , F16L53/37 , H05B3/06
摘要： A heated flowline electrical isolation joint is disclosed for introducing current into a pipe-in-pipe system having an outer and an inner pipe. A hub presents a load flange having tension and compression load shoulders on its terminal end and connects to the inner pipe on its other end. An end flange presents an end flange load shoulder on one end and a high strength, highly electrically insulative first ring separates the compression load shoulder from the end flange load shoulder which engage therethrough in a load bearing relationship. A plurality of o-ring seals secure the compression load shoulder-to-first ring-to-end flange load shoulder interfaces. A retainer flange connects to the end flange on one end and to the outer piper on the other end, encircling the hub and presenting a retainer flange load shoulder. A second high strength, highly electrically insulative ring separates the tension load shoulder of the hub from the retainer flange load shoulder which engage therethrough in a load bearing relationship. A plurality of o-ring seals securing the tension load shoulder-to-second ring-to-retainer flange load shoulder interfaces. An electrical feedthrough tubes receives an electrical penetrator which reaches through the retainer flange to electrical connection with the hub. An electrically insulative material in the annulus between the hub and the retainer flange and between the electrical penetrator and the electrical feedthrough tube secures electrical isolation across non-load bearing areas.
摘要翻译：公开了一种用于将电流引入具有外管和内管的管内系统中的加热流线电隔离接头。轮毂具有在其末端具有张力和压缩载荷肩部的负载凸缘，并在其另一端连接到内管。端部凸缘在一端具有端部凸缘承载台肩，并且高强度，高电绝缘的第一环将压缩载荷肩部与承载关系中与其穿过的端部凸缘承载台肩分开。多个O形圈密封件固定压缩载荷肩部到第一端对边缘法兰负载肩部接口。保持器法兰在一端连接到端部凸缘，并在另一端连接到外部夹子，环绕毂并呈现保持器凸缘加载肩部。第二高强度，高电绝缘环将轮毂的张力负载肩部与承载凸缘承载肩部分离，承载凸肩在承载关系中与其啮合。多个O形圈密封件，用于固定张力负载肩至肩环对保持器法兰负载肩部接口。电馈通管接收穿过保持器凸缘的电穿透器，以与毂电连接。在轮毂和保持器凸缘之间以及电穿透器和电馈通管之间的环形空间中的电绝缘材料确保跨非承载区域的电隔离。

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