Analysis of Influencing Factors on Water-Side Leakage of High-Pressure Heaters in Coal-Fired Unit
In order to find the leakage of high-pressure heater of coal-fired unit in time,the auther analyzes the influence of water side leakage of No.3 high pressure heater on operating parameters.Based on the leakage case of high-pressure heater,the influence of water side leakage of No.3 high pressure heater on normal drain valve opening,feed water flow deviation,feed water pump turbine speed and other parameters are quantitatively analyzed by establishing the analysis model of heat recovery system,and the sensitivity analysis of the influencing factors is conducted.Quantitative analysis method is adopted to define the judgment basis of water side leakage of high-pressure heater,optimize the combination of each judgment basis,determine the final trigger conditions of leakage warning,and develop the water side leakage warning device of high-pressure heater.The results show that the water side leakage warning device of high pressure heater is seven days earlier than that of human judgment,which can effectively avoid safety accidents caused by high pressure leakage and is of great important engineering application value.
coal-fired power unithigh pressure heaterleakage warning deviceoperation parametertemperature
国家科技期刊平台
NSTL
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