Turbine legs assist in maintaining alignment between the turbine and the generator. Turning vanes turn the gases from the axial direction to a radial direction to minimize exhaust hood losses. Where exactly turning vanes are located?Įxhaust hood and diffuser contains turning vanes located in the exhaust path. In each nozzle row, the kinetic energy of the jet is increased, with an associated pressure drop, and in each following row of moving buckets, a portion of the kinetic energy of the jet is absorbed as useful work on the turbine rotor. Explain the stages of the Gas turbine?Įach stage consists of a row of fixed nozzles followed by a row of rotatable turbine buckets. Transition pieces are attached to the aft end of the combustion chamber liners. Where exactly transition pieces are located? How spark plugs will retract after igniting combustion chambers?Īfter the turbine rotor approximates operating speed, combustion chamber pressure causes the spark plugs to retract to remove their electrodes from the hot flame zone. This tube enables flame from the fired chambers to propagate to the unfired chambers.
What is the function of crossfire tube?Īll combustion chambers are interconnected by means of crossfire tube. How many combustion chambers are there in frame # 9 & # 6 ?įrame #9 – 14 nos. Speed relay(14HS) corresponding to 95% speed.
Minimum – 34 DGA and Maximum – 85 DGA When IGV will start opening? What are the IGV minimum and maximum position in gas turbines? Speed relay (14HS) corresponding to 95 % speed.
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