Turbine control system

Details Turbine control system Turbine control system

1976-01-27

1977-11-01

Botz, Eugene G.

Rotary kinetic fluid motors or pumps

With control means responsive to non-cyclic condition...

With input signal of independent condition

290 40R, 364494, F01B 2504

Patent

active

040563316

ABSTRACT:
A turbine control system for changing over a throttle governing operation of a steam turbine to a nozzle governing operation thereof and vice versa by controlling control valves on the basis of a main control flow-rate request signal comprises function generators grouped according to the two governing operations and operating to produce function outputs in response to the opening degrees of the control valves. The function outputs are biased according to the two governing operaton and applied to respective high-value gates, the output signals of which are compared with the main control flow-rate request signal to control the opening degrees of the control valves in such a manner that the flow rate of steam introduced through the control valves into the steam turbine are maintained constant during the speed governing operation changing period.

REFERENCES:
patent: 3981608 (1976-09-01), Sato et al.

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