| 摘要 |
PURPOSE:To enable to increase an allowable stress of a shrouded ring and a tenon by communicating one tip end of a pipe sleeve for introducing cooling steam with an annulus groove in the external circumference of a diaphragm external ring and thereby communicating this annulus groove with the tip end of a moving blade. CONSTITUTION:The tip end of a pipe sleeve 13 which is connected to a cooling steam line 19 from a high pressure turbine 20 is communicated with an annulus groove 14 on the external circumference of a diaphragm external ring 5. And said annulus groove 14 is communicated with the tip end of a moving blade by a communicating hole 16. Thereby, an allowable stress of material can be increased by cooling a shrouded ring 8b and a tenon 11b. |
