T blade root used for high pressure cylinder blade of macrotype full rotary speed turbine

The utility model discloses a T-shaped blade root used by blades of a high-pressure cylinder in a large full-speed turbine, relating to the blade root used by the blades of the high-pressure cylinder in the turbine, which solves the problem of small bearing capacity, low working efficiency and unsafe operation existing in the current T-shaped blades of the turbine and consists of an upper neck (2) and a bottom of the blade root (3), wherein, the upper neck (2) is arranged on the bottom of the blade root (3) and the two parts are integrated into a whole; the upper neck (2) is 23mm in width b1 and 22.68mm in height h1; the bottom of the blade root (3) is 44mm in width b2 and 21.18mm in height h2; an upper chamfer E of the bottom of the blade root (3) is 1.5 * 45 degrees and a lower chamfer F of the bottom of the blade root (3) is 9 * 45 degrees. The T-shaped blade root reasonably determines the size of the blade root and facilitates the bearing capacity, the working efficiency and the safe operation of the blad