Thermal power plant electric feed water pump and start-stop control method thereof

Abstract

The invention provides a thermal power plant electric feed water pump and a start-stop control method thereof. The system comprises an electric pump feed water system and an electric pump lubricating system. The electric pump feed water system comprises a deaerator, an electric pump, an electric pump inlet filter screen, an electric pump inlet electric door, an electric pump outlet check door, an electric pump outlet electric door, an electric pump exhaust electric door, an electric pump recycling regulating valve and an electric pump recycling electric door. The electric pump comprises an electric pump front pump body, an electric pump motor, an electric pump main pump body and a gearbox, wherein the electric pump motor is used for driving the electric pump front pump body and the electric pump main pump body to work. The electric pump inlet filter screen comprises an electric pump front pump inlet filter screen body and an electric pump main pump body inlet filter screen body. The electric pump lubricating system comprises an electric pump lubricating oil tank, a first electric pump lubricating oil pump body, a second electric pump lubricating oil pump body, an electric pump lubricating oil heater, a first smoke exhaust fan, a second smoke exhaust fan, a first electric pump lubricating oil supply filter screen, a second electric pump lubricating oil supply filter screen, a first electric pump lubricating oil cooler and a second electric pump lubricating oil cooler.

Description

Technical field [0001] The invention relates to an electric water supply technology in a thermal power plant, in particular to an electric water supply pump system of a thermal power plant and a start-stop control method thereof. Background technique [0002] The main function of the electric feedwater pump system in thermal power plants is to provide start-up feedwater to the boiler. However, the existing electric feedwater pump system in thermal power plants cannot realize the automatic start of the electric feedwater pump system when it is fully stopped; it cannot be used in the electric feedwater pump. When the system is running, the electric feed water pump system is automatically stopped; and, when the start procedure of the electric feed water pump system reaches a certain step, if the step sequence conditions are not met, the start procedure cannot be continued. Summary of the invention [0003] In order to solve the above technical problems, the embodiments of the present...

AI Technical Summary

Problems solved by technology

[0002] The main function of the electric feed water pump system in a thermal power plant is to provide start-up feed water to the boiler. However, the electric feed water pump system in the existing thermal power plant cannot automatically start the electric feed water pump system when it is fully stopped; In the running state of the system, the automatic stop of the electric feed water pump system is realized; and, when the start procedure of the electric feed water pump system reaches a certain step, if the step condition is not satisfied, the start procedure cannot be continued

Images