Large-sized complete rotary speed 60Hz steam turbine last stage blade

A large full speed 60 Hz steam turbine last stage blade relates to a steam turbine blade. The aim of the utility model is to solve the problems in the prior steam turbine last stage blade, such as unstable quality, low efficiency, which badly affects the safe operation. The axial width (B1) of the blade shrouding part (1) is 27.2 mm, the height (Ld) of the blade shaped line part (2) is 1017 mm, the root axial width (B) of the blade shaped line part (2) is 254 mm, the height (Hz) of the middle part (3) is 15 mm, the blade root (4) is the fir type R blade root, the axial width (W) of the blade root is 292 mm, the total height (K) of the blade root (4) is 69.99mm, the boss bracing (6) is an ellipse cone type intersection body. The utility model adopts the full three dimensional method, which satisfies the requirement of blade intensity and the pneumatic performance, and has high performance, operates safely and efficiently under the manoeuvring condition.