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US 9,541,210 B2Granted
Pipeline pressure isolation systems and devices
AssigneeFluor Technologies Corporation
InventorPat F. Fetizanan
Life of this patent
Estimating the term…
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 predetermined threshold pressure is defined, in part, by a spring. The pressure isolation device provides a simple mechanical solution to protecting pipeline components from over-pressurization.
Claims20
A pressure isolation device comprising:
- a housing having an internal chamber, a first opening, a second opening, and a third 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, and wherein the elongated member is disposed within the internal chamber such that the first opening is disposed between the first piston and the second piston;
- wherein the elongated member comprises a first piston, a second piston, and a through hole disposed through the first piston;
- wherein the first piston is sized and dimensioned to contact a surface of the internal chamber;
- wherein the second piston is sized and dimensioned to contact a surface of the internal chamber to substantially seal a first portion of the internal chamber from a second portion of the internal chamber;
- wherein, when the elongated member is in the first position, the through hole is positioned so as to fluidly couple the second opening and the third opening;
- and wherein, when the elongated member is in the second position, the first piston substantially seals the second opening and the third opening.
4 more elements
A pressure isolation device comprising:
- a housing comprising a first chamber, a second chamber, and a third chamber, wherein the first and second chambers are separated by a first opening and the second and third chambers are separated by a second opening;
- an elongated member having a first portion and a second portion separated by a first catch;
- a through hole disposed on the first portion of the elongated member:
- wherein the first chamber comprises a first inlet, a second inlet, and a first outlet;
- wherein the elongated member is at least partially disposed within the housing, and is movable between a first position and a second position and biased towards the first position;
- wherein the first portion is at least partially disposed within the first chamber such that:
- when the elongated member is in the first position, the through hole fluidly couples the second inlet and the first outlet and at least part of the first catch mates with the first opening;
- and when the elongated member is in the second position, the first portion substantially seals the second inlet and the first outlet, and at least part of the first catch mates with the second opening.
5 more elements
A pressure isolation system comprising:
- a pipeline for transporting a fluid;
- a pressure isolation device disposed in the pipeline and configured to stop flow in the pipeline when the pressure isolation device is in a shutoff state, the pressure isolation device comprising:
- a housing having an internal chamber, a first opening, a second opening, and a third 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, and wherein the elongated member is disposed within the internal chamber such that the first opening is disposed between the first piston and the second piston;
- wherein the elongated member comprises a first piston, a second piston, and a through hole disposed through the first piston;
- wherein the first piston is sized and dimensioned to contact a surface of the internal chamber;
- wherein the second piston is sized and dimensioned to contact a surface of the internal chamber to substantially seal a first portion of the internal chamber from a second portion of the internal chamber;
- wherein, when the elongated member is in the first position, the through hole is positioned so as to fluidly couple the second opening and the third opening;
- and wherein, when the elongated member is in the second position, the first piston substantially seals the second opening and the third opening.
6 more elements
Dependencies are inferred from the claim text.