| 摘要 |
A bayoneted stator blade assembly or diaphragm that can be fitted in an axial fluid flow turbine with an unsplit outer casing 6. The stator blade assembly includes a one-piece stator blade ring 24 having an annular row of stator blades 26 (sometimes called stator vanes or nozzles) and at least one engagement projection or "bayonet" 32. A mounting ring 16 is assembled between two annular rows of rotor blades 12 and 36 mounted to disc-type rotors. The mounting ring 16 includes an engagement wall 18 with at least one recess 18a that is configured to receive the engagement projection 32. The stator blade ring 24 is secured to the mounting ring 16 by moving the stator blade ring axially past the engagement wall 18 in such a way that the at least one engagement projection 32 passes through the at least one recess 18a in the engagement wall. The mounting ring 16 is then indexed or rotated relative to the stator blade ring 24 so that the engagement projection 32 is axially secured in an annular channel 22 between the engagement wall 18 and a supporting wall 20. A pin (34, figure 4) may be inserted to lock the blade ring 24 in place on the mounting ring 16. |
