US 2014/0110002 A1 · PIPELINE PRESSURE ISOLATION SYSTEMS AND DEVICES

Abstract

A pressure isolation device for a pipeline system is described. The pressure isolation device changes from an open position to a closed position when the pressure of a fluid flowing through the device exceeds a predetermined threshold pressure. In some embodiments, the pressure isolation device comprises a housing having an internal chamber, a main inlet, and a main outlet. An elongated member is disposed within the internal chamber between the main inlet and main outlet, and is biased towards the open position. As fluid pressure increases, the elongated member is pushed to the closed position and a portion of the elongated member blocks the fluid pathway from the main inlet to the main outlet. The pressure isolation device provides a simple mechanical solution to protecting and isolating downstream pipeline components from over-pressurization.

Claims19

Dependent claims

A pressure isolation device, comprising:

a housing having an internal chamber, a main inlet, a main outlet, and an inner wall between the main inlet and main outlet, wherein the inner wall includes a first opening;
an elongated member disposed within the internal chamber and movable between a first position and a second position, and biased towards the first position;
wherein the elongated member comprises a piston and a plug;
wherein the piston is sized and dimensioned to contact a surface of the internal chamber to fluidly decouple a first portion of the internal chamber from a second portion of the internal chamber;
wherein at the first position, the plug is disposed outside of the opening of the inner wall such that the opening fluidly couples the main inlet and the main outlet;
and
wherein at the second position, the plug is disposed in the first opening of the inner wall such that it fluidly decouples the main inlet from the main outlet.

4 more elements

Dependencies are inferred from the claim text.

Pipeline pressure isolation systems and devices

Life of this patent

Pipeline pressure isolation systems and devices

Life of this patent

Abstract

Claims19