A few days ago, Chongqing Yongrong Power Plant steam engine technician Lai Bangfu invented a self-starting device for the pump, realizing "three pumps with four furnaces", saving 864,000 kWh of electricity for the entire year and generating annual profit of 400,000 yuan for the enterprise. In the past, only one boiler water was supplied to each feed pump in the plant. Due to manual monitoring of the water level and manual operation of the feedwater valves, workers were prone to erroneous judgment. Frequent boiler feed water wastage or insufficient boiler feed safety affected the safe operation of the unit. The factory steam turbine operation class technician Lai Bangfu calculations, found that "four for the four boilers feed pump" mode of operation, there is a waste of water supply phenomenon. He suggested that the four boilers should be connected in parallel to the water mains. By installing a self-starting device at the outlet of the water pump and removing a water supply pump as a backup, PLC fuzzy frequency conversion automatic control technology was adopted to solve the problems of low automation degree of the existing water supply system, The pressure of the pipe network needs to be manually adjusted so as to realize the operation mode of "three water supply pumps for four boilers", which enables the boiler water supply system to realize automatic load-free switching, which not only saves the water supply cost and lightens the labor intensity of workers, Improve the safe operation of the furnace cycle.
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