Power plants – System having plural motors or having diverse types of... – Having condition responsive control
Patent
1975-03-17
1976-10-19
Ostrager, Allen M.
Power plants
System having plural motors or having diverse types of...
Having condition responsive control
60660, F01K 1302
Patent
active
039863646
ABSTRACT:
A control system for a marine turbine power plant is disclosed wherein the input signal to an electrohydraulic valve positioning circuit for ahead and astern turbines may be directly related to a desired valve position signal input set at a throttle lever. Hence, primary control is by a desired valve position signal. A speed feedback circuit is included and selectively applied to the desired valve position signal as a valve position trimming signal. Another input into the primary control or desired valve position is a malfunction proportional control signal which tracks boiler operation, shaft vibration and overspeed. The valve position signal is applied to the valve positioning circuit through a rate limiter which may be set at a fast, normal, or slow rate depending upon an input from a system interface board.
REFERENCES:
patent: 3361108 (1968-01-01), Hobbs
patent: 3392696 (1968-07-01), Buckley, Jr.
patent: 3405676 (1968-10-01), Hobbs et al.
patent: 3422831 (1969-01-01), Straney et al.
patent: 3859006 (1975-01-01), Randell
Los Angeles Section of the Society of Naval Architects and Marine Engineers, Mar. 9, 1972: "The Control of Propulsion Power Aboard Steam Ships" by Prohl & Spears.
Tradewinds, Nov. 1972: "Turbine Topics: Fundamentals of the New Electrohydraulic Throttle Control System" by M. A. Prohl.
American Society of Naval Engineers, Delaware Valley Section, Jan. 18, 1973: "The Control of Propulsion Power Aboard Steam Propelled Naval Ships" by Prohl & Spears.
Marine Engineering/Log Sept., 1973: "G.E.'s New Turbine Control Package" by M. A. Prohl.
Chamberlain Harvey H.
Cronin Michael J.
Taber Bruce D.
Ahern John F.
General Electric Company
Mitchell James W.
Ostrager Allen M.
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