Lower end socket drainage structure of nuclear power station steam generator

The utility model discloses a lower end socket drainage structure of a nuclear power station steam generator, which comprises a lower end socket, an inlet and an outlet arranged on an inverted U-shaped heat transfer pipe and used for inputting and outputting a coolant, one end of the partition plate is fixedly welded to the bottom of the lower end socket structure and used for dividing the lower end socket into a coolant inlet water chamber and a coolant outlet water chamber; the coolant connecting pipe holes are respectively formed in the coolant inlet/outlet water chambers and are used for circulating a coolant; the access holes are respectively formed in the coolant inlet/outlet water chambers and are used for access of maintainers; and the leading-out structure is obliquely arranged atthe bottom of the lower sealing head and is used for leading out the coolant in the bottom area to the coolant connecting pipe hole. The drain structure of the lower end socket provided by the utility model can completely di