Self-contained, fully mechanical, 1 out of 2 flowline protection system
US10386005B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2016 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Jan 11, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17D5/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flowline protection system includes a first and second isolation valve connectable to a fully rated pipeline to prevent the flow of fluid through the fully rated pipeline when either of the isolation valves are in a closed position, interrupting the flow of fluids to a downstream underrated piping system to reduce the risk of overpressure or quantity of hydrocarbon released into the environment in the event of a line break. First and second hydraulic control assemblies each include high and low pressure safety pilot valves. Both the isolation valves return to the closed position if either high pressure safety pilot valve senses an operating pressure greater than a high pressure setting or if either low pressure safety pilot valve senses the operating pressure is less than a low pressure setting. The system is self-contained and free of a connection to any component other than the fully rated pipeline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.