Boiler water pump blowdown structure

Abstract

The invention belongs to the field of boiler water pump production and design and particularly relates to a sewage discharging structure for a boiler water pump. The sewage discharging structure comprises a sewage discharging hole formed in a lower end cap of the boiler water pump and a washing unit used for washing the inner surface of the lower end cap. The washing unit comprises water supply pipelines. The sewage discharging structure further comprises a first blocking plug used for blocking the sewage discharging hole and second blocking plugs used for blocking the water supply pipelines. The first blocking plug and the second blocking plugs are all arranged in a detachable mode. In the operation process of the boiler water pump, the first blocking plug blocks off the sewage discharging hole, and the second blocking plugs block off the water supply pipelines, so that the sealing is ensured; when the sewage discharging is needed, the first blocking plug and the second blocking plugs are detached, and the second blocking plugs are communicated to supply water, so that the bottom, where sewage gathers, of the boiler water pump is washed, and waste water flows out of the sewage discharging hole. The sewage discharging structure is simple in operation, efficient, and small in water consumption.

Description

technical field [0001] The invention belongs to the field of boiler water pump production design, and in particular relates to a boiler water pump blowdown structure. Background technique [0002] The furnace water pump motor is the driving equipment used to drive the forced circulation pump in large power plants. The inlet and outlet pipes of the forced circulation pump are connected to the boiler piping system to provide power for the boiler working medium circulation. Such as figure 1 As shown, the boiler water pump motor 2 is directly connected to the forced circulation pump 1, and the inner cavity of the boiler water pump motor 2 communicates with the inner cavity of the forced circulation pump 1, and both the stator and the rotor of the motor are in a wet room environment. In the working state, the casing of the entire furnace water pump motor 2 is sealed. When the inner cavity of the motor is filled with liquid, due to the incompressibility of water, the high-tempera...

AI Technical Summary

Problems solved by technology

In the working state, the casing of the entire furnace water pump motor 2 is sealed. When the inner cavity of the motor is filled with liquid, due to the incompressibility of water, the high-temperature liquid in the forced circulation pump 1 cannot continue to enter the furnace water pump motor 2. Cavity

However, a large amount of dirt will be generated inside the boiler water pump after being used for a long time, but since the whole boiler water pump casing is sealed, the entire lower cover of the boiler water pump must be opened to remove the dirt, which is not only time-consuming and laborious, but also opens and closes the lower cover repeatedly Will affect the sealing performance of the lower cover

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