Improvements relating to rotors for turbines or axial flow compressors

Abstract

Abstract 659,592. Turbine and compressor rotors. SULZER FRERES SOC. ANON. Aug. 2, 1949, No. 20111. Convention date, Sept. 17, 1948. [Class 110(iii)] In a rotor for a turbine or an axial flow com, pressor in which blades are in. serted into circumferential grooves through a filling aperture, the aperture is closed by means of a mul. ti-part key, the main part of which is wedgeshaped and tapers outwardly and means are provided for urging this mair part outwardly In Fig. 3, the filling aperture 3 has overhang ing shoulders and the main part 6 of the key is threaded to receive a screw 7. The two auxiliary parts 9 of the key are also wedge-shaped. The screw 7 bears against a spring disc 16 in a recess in the filling aperture and the parts 9 have extensions 13 against which the head of the screw 7 may bear to assist in dismantling. A slit 15 is provided in the main part 6 whereby the screw 7 is locked by the wedging action. The filling aperture may be of inverted T-section or of staggered wedge section and the auxiliary parts are correspondingly shaped. In Fig. 6 the root 30 of a blade is wedge-shaped and forms one part of the key, an auxiliary wedge-shaped piece 37 being inserted between the root and the main part 38 of the key.

Inventors

No inventors recorded.

Bibliographic Details