TURBO-EXPANDER REGULATION SYSTEM Russian patent published in 1998 - IPC

FIELD: regulation of turbo-expanders. SUBSTANCE: regulation system is provided with stop valve made in form of two valves letting no gas into separate branch lines. Branch line running to turbo-expander is fitted with regulating member provided with drive and position sensor. Branch line running from stop valve to low- pressure main is fitted with bypass valve provided with drive and position sensor at throughput capacity equal to that of regulating member. Regulating member and bypass valve may be made in form of two valve with single drive. EFFECT: enhanced reliability of supply of gas due to use of turbo-expanders at gas distributing stations. 2 cl, 2 dwg