Energy dissipating pipeline surge relief system
US4340079A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1980 |
| Grant date | Jul 20, 1982 |
| Priority date | — |
| Expiry date | May 14, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86043
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pressure surge relief system for a liquid transporting pipeline, comprising a surge relief line adapted to be tapped from the pipeline. The relief line includes a valve which is conditioned to open quickly to substantial flow when the pressure in the line exceeds a predetermined safe limit, which is well above the normal pipeline pressure. When the valve opens, it diverts to a closed receptacle, that quantity of liquid which is necessary to prevent the pressure from exceeding said predetermined limit. Hence, in the event of the surge, much of the pressure is absorbed in the liquid and pipe, and just that quantity of liquid which is necessary to relieve pressures of unsafe proportions is discharged to the closed receptacle. The receptacle is pre-charged with a gas to cushion the impact of the surge and also includes means to dissipate energy of the liquid surge and to bring the liquid to a state of quiescence as quickly as possible. A return duct evacuates the reservoir to the pipeline when the surge subsides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.