Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Patent
1992-09-18
1993-09-28
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
60 3955, 60742, F23R 336
Patent
active
052477908
ABSTRACT:
A gas turbine fuel nozzle assembly having a replaceable nozzle cap. The nozzle assembly is comprised of a base portion and a nozzle cap. The nozzle base is secured to a combustion system and contains inlet ports for receiving either gas and oil fuel or gas fuel and steam, depending on the nozzle assembly configuration. The nozzle cap has outlet ports for injecting either gas and oil fuel or gas fuel and steam. The nozzle cap is connected to the nozzle base by inner and outer sleeves that form an annular conduit by which the gas flows from an inlet port in the base to an outlet port in the cap. In addition, the inner sleeve, which has an expansion joint formed therein, forms a central cavity that either holds an oil spray nozzle or forms a steam passage, depending on the nozzle assembly configuration. The nozzle cap is detachably coupled to the base by first and second threaded joints formed in the inner and outer sleeves, respectively. A locknut presses a front portion of the outer sleeve against a rear portion of the outer sleeve to form a first secure, but detachable, joint. A lock tube pulls a front portion of the inner sleeve against a rear portion of the inner sleeve to form a second secure, but detachable, joint. Anti-rotation pins and seals are disposed in both the first and second joints.
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Donlan John P.
Eddy Jeffrey C.
Bertsch Richard A.
Thorpe Timothy S.
Westinghouse Electric Corp.
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