Patent ID: 6393827
Filing Date: 2002-05-28
Classification: F01D,F02C,F05D

Abstract:
A gas turbine fuel system comprising a fuel oil supply system for supplying fuel oil to a plurality of fuel nozzles and a fuel gas supply system for supplying fuel gas to said plurality of fuel nozzles so that gas turbine operation may be done with fuel being changed over to either one of oil and gas, further comprising a fuel oil distribution control system for controlling flow rate and pressure of fuel oil in each of fuel pipings connecting to said fuel nozzles within a predetermined range by a control means provided in said fuel oil supply systems; a fuel oil purge system provided upstream to said fuel nozzles in said fuel oil supply system for purging residual oil in said fuel oil supply system and fuel nozzles by air; a purging air supply system for supplying air to said fuel oil purge system; and a fuel nozzle wash system for supplying wash water to upstream side of said fuel nozzles in said fuel oil supply system connected to said fuel nozzles.