| 摘要 |
The moving blades are configured so as to meet a condition: (L+3D)xf>=14,500 or Lx(L+D)xf2>=1.55x107, where L is an effective length of the moving blade measured in inches, D is a blade root circle diameter of the moving blades measured in inches, and f is the rated operating speed of the turbine measured in Hz. The moving blades are formed of a titanium alloy. The dovetail has an Christmas-tree shape, and is a curved-axial-entry. The moving blades are configured and arranged so as to meet a condition: 3.5<=P/W<=7.0 or 0.8<=P/C<=1.0, where w is a width of a section of a tip of the moving blade measured along an axis of the rotor wheel, P is pitch of the moving blades, and C is a chord length of the tip section of the moving blade. Adjacent moving blades are connected to each other in such a manner that the adjacent moving blades being capable of relative movement while the adjacent moving blades being connected to each other.
|
