Medium-pressure last-stage 315mm moving blade based on small-enthalpy reduced blade profile

The utility model relates to a medium-pressure last-stage 315mm moving blade based on a small enthalpy drop blade profile, in particular to a medium-pressure last-stage 315mm moving blade based on a small enthalpy drop blade profile suitable for a supercritical 600MW turboset, and aims to solve the problem that a medium-pressure last-stage moving blade of a traditional steam turbine is poor in aerodynamic performance when the working condition is low in load. The blade body is a variable cross-section twisted blade, the cross sectional area of the blade body is gradually reduced from the root to the top, the mounting angle of the root is 61.237 degrees, and the mounting angle of the top is 38.630 degrees; the inlet angle of the root part is 66.823 degrees, and the inlet angle of the top part is 100.924 degrees; the outlet angle of the root part is 25.733 degrees, and the outlet angle of the top part is 18.835 degrees; the blade root is T-shaped, and the shroud ring, the blade body and the blade root are integ