Water seal overflow collecting device for deaerator

The utility model relates to a water seal overflow collecting device of a deaerator, which comprises a deoxidizing tower, a deoxidizing water tank, a water seal, a downcomer, a U-shaped pipe, a collecting tank, a water pump, a stop valve I, a stop valve II, a water return pipe, a water replenishing pipe, a water return valve and a water replenishing valve, the deoxidizing tower is connected with the deoxidizing water tank in a welding manner, the deoxidizing water tank is connected with a water seal pipeline through a flange, and the water seal is connected with a left side pipe of the U-shaped pipe; the one-third position of the height of the left side pipe of the U-shaped pipe is connected with the collecting tank through a pipeline, the pipeline is provided with a stop valve I, the collecting tank is connected with the water pump through a pipeline, the pipeline is provided with a stop valve II, the water return pipe is connected with the deoxygenated water tank, and the water supplementing pipe is connect