초록 ▼

A plurality of fuel nozzles X1 and X2 in combustor X are supplied with fuel gas from a fuel gas system and fuel oil from a fuel oil system, respectively. Gas turbine operation is performed with fuel being changed over to either gas or oil. Fuel oil distribution control system A controls oil flowing

A plurality of fuel nozzles X1 and X2 in combustor X are supplied with fuel gas from a fuel gas system and fuel oil from a fuel oil system, respectively. Gas turbine operation is performed with fuel being changed over to either gas or oil. Fuel oil distribution control system A controls oil flowing into a plurality of fuel pipings. When oil is changed over to gas, fuel oil purge system B is supplied with air of an appropriate temperature and pressure from purging air supply system C. This air flows into fuel oil pipings and nozzles X2 for purging residual oil therein. Fuel nozzle wash system D is supplied with water by-passing from a wash water tank for compressor washing. This water flows through nozzles X2 for washing thereof

대표청구항 ▼

1. A gas turbine fuel oil distribution control system, wherein there are provided a series control valve comprising a plurality of valves for controlling pressure loss in a fuel oil supply system so as to correspond to a plurality of fuel nozzles, each of said plurality of valves being driven contro

1. A gas turbine fuel oil distribution control system, wherein there are provided a series control valve comprising a plurality of valves for controlling pressure loss in a fuel oil supply system so as to correspond to a plurality of fuel nozzles, each of said plurality of valves being driven controllably at same time with same opening; a drive unit for driving said series control valve; and a control unit for controlling said drive unit, and said control unit is inputted with a system differential pressure signal and a load signal of said fuel oil supply system to put out to said drive unit a signal to throttle said series control valve approximately to an intermediate opening while the system differential pressure is a predetermined low differential pressure and a signal to open said series control valve fully for a predetermined time when said system differential pressure comes to a predetermined high differential pressure.