F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
170/72
F01D 25/00 (2006.01) F01D 11/08 (2006.01) F02C 7/00 (2006.01)
Patent
CA 1212048
- 1 - Abstract: A stage structure of an axial turbine consists of a stationary inner ring, a stationary outer wall, a row of stationary blades mounted on thy stationary inner ring and outer wall, a row of moving blades and a shroud ring mounted on the tips of the moving blades. An annular member is disposed immediately downstream of the axial gap formed between the axial end of the shroud ring and the surface of the outer wall axially facing the axial end of the shroud ring. The effect of this annular member is to reduce the expansion space immediately downstream of the axial gap. As a result, circulation of the ejection flow from the main stream through the axial gap is reduced and the turbine stage efficiency there- by improved. The annular member may be a ring fixed to the stationary outer wall, a protrusion, or a cylinder formed as part of the wall.
486550
Hisano Katsukuni
Ikeuchi Kazuo
Kaneko Ryoichi
Sasada Tetsuo
Sato Takeshi
Hitachi Ltd.
Kirby Eades Gale Baker
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