Energy recovery, pressure reducing system and method for using the same
US5606858A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1994 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Feb 17, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17D1/075
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An energy recovery, pressure reducing system according to the present invention for reducing high pressure gas in a transmission pipeline to a lower pressure in a consumer pipeline includes a primary pressure regulator or regulating valve having an adjustable flow control opening, the pressure regulating valve being selectively connectable between the transmission and consumer pipelines for throttling the high pressure gas and producing low pressure gas when the primary pressure regulator or regulating valve connects the pipelines. A bypass line shunts the primary pressure regulator or regulating valve for connecting the pipelines when the primary pressure regulating valve is disconnected from the pipelines. The bypass line includes an expander system having at least one expander for expanding the high pressure gas in the gas transmission pipeline and producing work and lower pressure gas that is supplied to the consumer pipeline. Preferably, a generator is coupled to the expander for converting work produced by the pressure regulating of the high pressure gas in the expander to electricity which is supplied to an electrical load. A fast acting, selectively adjustable pressure regu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.