Pressure reducing system and method for using the same
US5685154A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Oct 2, 2015 |
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 for reducing high pressure gas in a transmission pipeline to a low pressure gas in a consumer pipeline includes an expander system having at least one expander for expanding the high pressure gas and producing work and low pressure gas that is supplied to the consumer pipeline, and a generator coupled to said expander for converting the work to electricity which is supplied to an electrical load. The system further includes apparatus including an on/off valve serially connected to a pressure regulating valve, the apparatus being connected in parallel with the expander system. The on/off valve has an open state for effecting transmission of gas through the pressure regulating valve which has an adjustable flow control opening for throttling high pressure gas and producing low pressure gas when the on/off valve is in its open state; and a closed state for preventing transmission of gas through the pressure regulating valve. A control system is provided which is responsive to flow through the expander system for controlling the size of the flow control opening and the state of the on/off valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.