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Gas turbine fuel system comprising fuel oil distribution control system, fuel oil purge system, purging air supply system and fuel nozzle wash system

  • US 6,385,975 B1
  • Filed: 08/15/2001
  • Issued: 05/14/2002
  • Est. Priority Date: 05/08/1998
  • Status: Expired due to Fees
First Claim
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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.

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