Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part
Patent
1985-07-08
1987-05-05
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
F01D 1102
Patent
active
046628207
ABSTRACT:
A stage structure of an axial turbine includes a stationary inner ring, a stationary outer wall, a row of stationary blades mounted on the 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 solid substance, disposed immediately downstream of an axial gap formed between an axial end of the shroud ring and surface of the outer wall axially facing the axial end of the shroud ring, reduces an expansion space provided immediately downstream of the axial gap, whereby circulation of an ejection flow from a main stream through the axial gap is reduced so that the turbine stage efficiency is improved. The annular solid substance may be a ring fixed to the stationary outer wall, a protrusion or a cylinder formed by a portion of the outer wall.
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Hisano Katsukuni
Ikeuchi Kazuo
Kaneko Ryoichi
Sasada Tetsuo
Sato Takeshi
Garrett Robert E.
Hitachi , Ltd.
Kwon John
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