Valve device for the assembly in in-service pipelines and the assembly procedure of said device

摘要

A valve device and assembly procedure thereof on a in-service pipeline by mounting an assembly that includes an operative subset, a deposit subset, and lateral sets which are assembled on a pipeline so that, without shutting down the pipeline service, the pipeline is perforated, and valve seats, included with the valve device, are displaced until the device is in-service, thus arranging the valve device to enable the control of the fluid circulation through the pipeline.

主权项

1. A valve device for assembly in in-service pipelines, said valve device is prepared to be assembled on a pipeline, while continuous fluid circulation is maintained through the pipeline, in order to perforate said pipeline and assemble said valve device to act as a flow control of said fluid circulation between a position of maximum circulation and a shut-off position, said valve device comprises:
a mounting assembly able to form an operative air-tight housing on a portion of a pipeline prepared to be cut by perforation, said mounting assembly including an operative subset and a deposit subset, said operative subset including a cutting means and a valve means, wherein said cutting means and said valve means are aligned on a drive means positioned transversely to said portion of said pipeline, said deposit subset including a passage for said cutting means, the deposit subset being adapted to lodge a cut pipeline bite, a plurality of lateral sets which, when assembled on said portion of said pipeline, comprise subsets of a valve seat on both sides of the location where said pipeline is to be cut; and each subset of the valve seat includes a valve seat displaceable in order to bring said valve seat into in contact with said valve means, a tightness joint (12) having a linking means (12c) for connecting said tightness joint with said valve seat, and a containment cuff of said seat and joint.