| Boiler feed pump is one of the most important in thermal power plant auxiliaryequipment. Boiler feed pump in the actual operation of thermal power plants, due todesign or unit system and other aspects of the design point, the performanceparameters will deviate from the feed water pump, pump running parameters ofinsufficient output or output is big, efficiency of pump operating point deviates fromthe best efficiency of feed water pump. This caused the operating parameters of theBoiler feed pump and output does not match the phenomenon and the actualcondition of the unit, the low efficiency of boiler feed pump, shaft power increases,power consumption increased, the reduction of turbine efficiency, caused great wasteof energy.This paper analyzes the occurring during the operation of the boiler feed pumpflow, head, power plant and other performance parameters and cavitation phenomenain output and the unit system does not match the aspects and problems, analyzes thedeep reasons and mechanism problems arise from the feed water pump design theoryand field operation point of view, put forward in line with the actual, effective,economical and reliable solutions and solutions, so that the Boiler feed pump canmeet the actual operation conditions of power plant, ensure the operation of Boilerfeed pump in the best condition, the maximum efficiency point, so as to improve theefficiency of the Boiler feed pump and the entire unit, reducing the unit energyconsumption. At the same time, analysis of performance parameters of feed pump inoperation process, improve the design and performance for similar products, andprovide reference for the development of new products, but also provides thefeedwater pump performance parameters matching to determine the basis for thedesign department of electric power planning. |
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