EXTRACTION STEAM TURBINE SPEED AND PRESSURE REGULATOR MECHANISM

Upon a change in speed of the turbine shaft, the sleeve of centrifugal governor 1 is displaced, turning lever 2 about point A and simultaneously shifting the spools of valves 3 and 4. These valves direct the hydraulic fluid to servomotors 5 and 6. The movement of the pistons of servomotors 5 and 6 shifts valve members 7 and 8, changing the amount of steam supplied to the turbine. At this, levers 10 and 11, performing direct feedback operations, shift the bodies of the valves, returning them to the neutral position. Upon a change in the bled-off steam, pressure regulator 9 turns lever 2, shifting the spools of valves 3 and 4 and leading to the shifting of valve members 7 and 8.
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