TURBINE STATIONARY BLADE

PROBLEM TO BE SOLVED: To make compact a vehicle chamber for surrounding a turbine stationary blade by making small a diameter of a connecting bolt for the turbine stationary blade manufactured by being divided into two upper and lower parts, and to be attached around a rotor, and decreasing the wall thickness of an outer ring through which the bolt is to be inserted. SOLUTION: The wall thickness of a first line stationary blade 1 attaching part is equalized to those of a second line and later stationary blade 2 attaching parts, a seal surface 13 is arranged on the rear end positioned on the final line stationary blade 2 output end, the whole outer peripheral surface is guided into an attaching groove 11, and an outer ring 8 to be pressed under operating fluid on the first line stationary blade 1 input side and a seal fin attaching plate 9 projecting in the axial direction from the rear end of the outer ring 8 and having the large thickness are provided. A bolt 7 for connecting the contact surfaces can be thinned, and the thickness of the outer ring 8 is not necessary to be extremely thickened, and therefore, the thickness from the first line stationary blade 1 attaching part to the final line stationary blade 2 attaching part can be approximately equalized, a turbine stationary blade having a little flexure on a seal part can be formed, turbine efficiency can be improved, and a compact vehicle chamber can be achieved.