Thermal power plant high-pressure heater with anti-overflow heating pipe

The utility model discloses a thermal power plant high-pressure heater with an anti-overflow heating pipe. High-pressure heater comprising a high-pressure heater body, a water supply pipe and a steampipe are communicated with the inner wall of the high-pressure heater body; a plurality of tube plates and a plurality of U-shaped tubes are arranged in the high-pressure heater body; the plurality ofU-shaped pipes are fixedly arranged in a manner of respectively penetrating through the corresponding pipe plates; a branch pipe is communicated with the inner wall of the water supply pipe; a filtering mechanism is slidably connected into the water supply pipe in a sealed mode, a sealing cover is arranged at the end, located outside the high-pressure heater body, of the water supply pipe, a rubber gasket is fixedly connected to the inner wall of the sealing cover, the filtering mechanism makes contact with the rubber gasket and an end opening of the water supply pipe in an abutting mode, andfirst annular protruding e