Feed water pump Manufacturers

You can rest assured to wholesale Feed water pump from our factory with confidence, we can provide you reasonable price. We're one of professional Feed water pump manufacturer and supplier in China.Welcome friends and customers from home and abroad to visit our factory and cooperate with us, hope we can get double-win.

Since the deaerator is a mixed heating device, there must be a water pump to increase the pressure to enter the boiler, and this water pump becomes the feed water pump.
The motor is easy to operate, flexible, and occupies a small area, while the steam turbine is driven by a steam pipeline and operating valves, which is troublesome to run and occupies a large area, but it can run at variable speeds without "throttling" loss. Therefore, small and medium thermal power plants generally use electric power when the power grid is connected (on the Internet). Only isolated thermal power plants (when there is no power grid) and the first phase of the project. In order to start the boiler for the first time, there must be a start-up boiler and a steam turbine. The dragged feedwater pump is convenient for the first start-up. The electric feedwater pump consumes the power generation (plant power) of the power plant, which is converted from coal through a series of energy conversion by the main engine, while the steam-driven feedwater pump is the heat energy of the consumed steam, which is converted from coal to the main engine by the boiler. The small steam turbine directly drives the feedwater pump after the steam does work or enters the feedwater pump without any work. That is to say, there are two possibilities for the drag steam of the small steam turbine of the feed water pump, one is the fresh steam of the boiler, and the other is the extraction steam that has done some work after entering the main steam turbine. The latter realizes the cascade utilization of energy and increases the amount of steam extraction. There are two types of exhaust steam. One is the deaerator discharged into the regenerative system for heat recovery, and the other is discharged into the heating system as part of the heat supply. Therefore, the feedwater pump steam turbine of the thermal power plant is a back pressure unit without cooling. Source loss and high energy efficiency.
Large generator sets (units above 300MW) generally use one electric feedwater pump and two steam-driven feedwater pumps. The electric feedwater pump is used for startup and shutdown and emergency backup. The adjustment of the electric feedwater pump mainly relies on the adjustment of the hydraulic coupler scoop tube. Cooperate with boiler water regulating valve. After the steam-driven feed water pump is rushed and warmed up to 3000 rpm, it will switch to the "remote control" operation mode, and the feed water quantity is controlled by the speed adjustment. The steam source for driving the small steam turbine is auxiliary steam and a three-way steam source with four extraction and cold end reheated steam, and the exhaust gas is discharged into the condenser.