1800mm last-stage movable blade used on half-revolving speed nuclear turbine

The invention discloses a 1800mm last-stage movable blade used on a half-revolving speed nuclear turbine, relating to the movable blade of the large-power half-revolving speed nuclear turbine. The 1800mm last-stage movable blade aims to solve the problems that the length of the movable blade of the traditional half-revolving speed nuclear turbine set is in the 1400mm grade, and the blade of the traditional half-revolving speed nuclear turbine set has small exhausting area and can not be used on the half-revolving speed nuclear turbine set of the 1400-1700MW grade. A shroud ring, a blade working part and a blade root are subjected to die forging into a whole from top to bottom; a boss tie bar is positioned in the middle of the blade working part and is integrated with the blade working part; an intake side on the upper part of the blade working part is stuck with a Stellite alloy plate; and the height of the blade working part is 1800mm, the axial width of the root is 372mm, the diameter of the root is phi 2750, the exhausting area of the blade working part is 25.73m , and the axial width of a blade root is 410mm. The 1800mm last-stage movable blade is used for the half-revolving speed nuclear turbine of which the power is 1250-1700MW.