關鍵詞 汽輪機；凝汽式汽輪機；調節系統；電液調節系統
ABSTRACT
Various govering type,such as full-hydraulic governing system.WOODWARD mechanicalhydraulic governing system and computer control elect-hydraulic govering system,can be reasonably selected and configurated depending on the system function and automatic control level that custemers required.
power industry, the 200 MW machine set has become the charged barbed wire net to adjust the Along with the development of the electric machine set, it carries the ability of adapt and responds to the rate of speed of the speed and then seem to be more and more important, past, the domestic 200 MW machine set controls the traditional liquid of widespread adoption to press to control the system, this kind of system structure complications, the control accuracy is low, the credibility is bad, spreading to move the speed slow, already far far satisfy not the charged barbed wire net adjusts the request of one degree automation.But the electricity liquid regulate the system to be more and more value.
Have study appies and pricles of steam turbines .In general the nozzle control is adopted.The openning and closing of the governing and closing of the governing valves are controlled by an oil servomotor via a beam,two spindles and a level system.
in govering,have speed control system WOOD505、protection、local control panel 、protection Equipment and so on.
Turbines are equipped with safety devices for pressure,live steam pressure,extraction steam pressure vacuum,axial displacement of rotor,and the monitoring devices for speed,vibration,temperation,pressure etc.
Along with dispersion continuously raise of the control system technique level, a power station is controled the system by the dispersion of the one type to complete all control mission and is a future development trend.
Key words turbines；steam turbines ；govering ；computer elect-hydraulic govering system
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