Shroud ring for an axial flow turbine

Details Shroud ring for an axial flow turbine Shroud ring for an axial flow turbine

1992-09-28

1994-03-01

Kwon, John T.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

4151711, 4151736, F01D 1102

Patent

active

052901440

ABSTRACT:
In a device for sealing the gap between the rotor blades and the casing (2) of a turbomachine, configured with a conical profile (28), the rotor blades (6) are provided with circumferential shroud plates (11), which seal by serrations (12, 13, 14, 15) against the casing with the formation of radial gaps (16, 17, 18). The shroud plate (11), which is arranged at the end of the blade, has four throttle locations relative to the casing, the inlet end throttle location bounding a diagonal gap (19) and the outlet end throttle location forming a radial gap (16).

REFERENCES:
patent: 2910269 (1959-10-01), Howorth et al.
patent: 3677660 (1972-07-01), Taniguchi et al.
patent: 3876330 (1975-04-01), Pearson et al.
patent: 4295787 (1981-10-01), Lardellier
patent: 4370094 (1983-01-01), Ambrosch et al.
patent: 4576551 (1986-03-01), Oliver et al.
patent: 4623298 (1986-11-01), Hallinger et al.
patent: 4662820 (1987-05-01), Sasoda et al.
patent: 4710102 (1987-12-01), Ortolano

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