| 摘要 |
<p>A device for sealing gas turbine stator blades, wherein the sealing pressure of the inner shroud is enhanced to increase the sealing effect; an external shroud (32) is fitted to a blade ring (50) via heat insulating rings (32a, 32b), and the blade ring (50) is provided with air holes (1, 51), with one hole (1) communicating to a space (53) and the other (51), to a seal tube (2); a tip (3) of the seal tube (2) is inserted into the air hole (51), and a spring (6) is arranged between a protrusion (4) of the tube (2) and an engaging part (5) of the air hole (51) to fix the seal tube (2) detachably; cooling air (54), on one hand, enters the space (53) through the air hole (1), cools the inside of the shroud and a stator blade (31), and is discharged from the trailing edge, and, on the other hand, enters a cavity (36), the inside of which, as the tube (2) being independent of the space (53), is not subjected to pressure loss and kept at a high pressure; and high pressure air from the cavity (36) flows out of seal parts (40a, 40b), as indicated by S1 and S2, to prevent invasion of high temperature gas from the combustion gas passage.</p> |
