Feed water pumps, condensate water pumps and circulating water pumps are the three most important water pumps in power plants.
The task of the feed water pump is to transport the water from the deaerator with a certain temperature and the deoxygenated water in the water storage tank to the boiler after increasing the pressure to meet the water needs of the boiler.
The function of the condensate pump is to increase the pressure of the condensate in the condenser hot well and then send it to the heat recovery system.
The function of the circulating water pump is to supply cooling water to the steam turbine condenser to condense the steam turbine exhaust steam. In power plants, the circulating water pump also supplies cooling water to the oil cooler, water cooler, refrgenerator air cooler, etc.
Thermal power plant deaerator
The main function of the deaeratoris to use it to eliminate the oxygen and other gases from the boiler feed water to ensure the quality of the feed water. At the same time, the deaerator itself is a hybrid heater in the feed water heating system, which plays the role of heating the feed water and increasing the temperature of the feed water. 'food.
The principle of the deaerator is that the replenishment water passes through the spiral-shaped membrane tube and is sprayed at a certain angle to carry out heat exchange and deaeration with the heating steam. the feed water is heated to the corresponding working pressure of the deaerator, removes oxygen and other gases dissolved in the feed water, and prevents and reduces corrosion of the feed pipes ofthe boiler, economizers and other auxiliary equipment.
The degasser is one of the key equipment of the boiler and heating system. If the deaerator has poor oxygen removal capacity, it will cause serious losses due to corrosion of the boiler water supply pipeline, economizer and other accessories. The economic losses caused will be tens or hundreds of times higher than the cost of the degasser.
You need to understand the function of the degasser first!
The main function of the degasser is to remove oxygen and other non-condensable gases from the feed water of the boiler to guarantee the quality of the boiler feed water. feed water. If oxygen is dissolved in water, the metal in contact with the water will be corroded. At the same time, if there is gas accumulation in the heat exchanger, the thermal resistance of heat transfer will increase et the heat transfer effect of the equipment will increase. reduce. Therefore, any gas dissolved in water is unfavorable, especially oxygen, which will directly threaten the safe operation of the equipment.
Thermal deaeration is used in thermal power plants. The deaerator itself is a hybrid heater in the water regeneration system, at the same time, the hydrophobic and chemical water replenishment of the high pressure heater and the water quality in the whole system. The factory is qualified. High pressure water drainage, exhaust steam, etc. can be directed to the degasser for use, thereby reducing the loss of steam and water in the power plant.
After being heated, it can mainly be used as a heater to increase efficiency.