THE ANALYSE OF FUEL CONTROL SYSTEM OF UNIT
Abstract
Fuel is the matter that could product lots of heat energy when it burns. And boilers of the electricity power factory are the equipments that exhaust a great deal of fuel. The quality of the fuel is significant and vital effect on the boilers running safely and economically.
It is necessary to choose different burning methods and sorts of burning equipment for kinds of fuel. Hence it is high time that the professional people to get the knowledge of fuel, including its distinguishing feature, quality and so on.
Since the large-sized unit has been gradually used widely, and the every parts of the unit have close connection meanwhile they affect the others, it is necessary to design a control system to control the situation of the fuel.
There are three modulating tasks in the burning of boiler, containing barometric pressure, maintain the fuel-air ratio control of combustion process, and hold the constant combustion chamber negative pressure.
Corresponding to the three tasks, three control circuits control the quality of fuel, the quality of wind and Air quantity of blower, which constitutes the burning control system. It has closely connection to the fuel control system.
Keywords: fuel; boiler; steam turbine; Coordinated Control System; control system of boiler-turbine
