초록 ▼

An electronic governor (34) to control a main steam valve (22) of a steam turbine (10) for controlling the rotational speed of a main drive shaft (16). The electronic governor (34) has a housing (36) in which an electric generator (104) is mounted to supply electrical energy to an electronic module

An electronic governor (34) to control a main steam valve (22) of a steam turbine (10) for controlling the rotational speed of a main drive shaft (16). The electronic governor (34) has a housing (36) in which an electric generator (104) is mounted to supply electrical energy to an electronic module (100) mounted on the housing (36). A hydraulic fluid pump (52) is mounted on the housing (36) and supplies fluid to a fluid operated piston (62) to effect a predetermined rotation of an output control shaft (32) and movement of main steam valve (22). Output signals from a microprocessor (116) to solenoid operated valves (96, 98) control the movement of fluid operated piston (62). Pump shaft (46) and generator shaft (48) are in axial alignment with and driven by the main drive shaft (16) to provide all of the power for operation of the electronic governor (34).

대표청구항 ▼

[ What is claimed is:] [1.] A speed control system for a prime mover having a main drive shaft extending therefrom mounted for rotation at a controlled rotational speed; said system comprising:a main control valve mounted for longitudinal movement to selectively vary the amount of fluid to said prim

[ What is claimed is:] [1.] A speed control system for a prime mover having a main drive shaft extending therefrom mounted for rotation at a controlled rotational speed; said system comprising:a main control valve mounted for longitudinal movement to selectively vary the amount of fluid to said prime mover to control the rotational speed of said main drive shaft; anda governor operatively connected to said main control valve to control the movement of said main control valve in response to the rotational speed of said main drive shaft; said governor having hydraulic fluid means operatively connected to said main control valve to effect movement of said main control valve and including a hydraulic fluid pump driven from said main drive shaft for the operation of said fluid means, and electronic control means responsive to the rotational speed of said main drive shaft and transmitting output signals to said hydraulic fluid means to effect movement of said main control valve to a predetermined position;said governor including an electric generator having a generator shaft driven from said main drive shaft to supply electrical energy to said electronic control means.