Turbine shroud sealing device

Details Turbine shroud sealing device Turbine shroud sealing device

1984-09-20

1986-11-18

Powell, Jr., Everette A.

Rotary kinetic fluid motors or pumps

Including thermal expansion joint

Circumferentially spaced nozzle or stator segments

415174, F01D 1102

Patent

active

046232982

ABSTRACT:
An improved guide vane shroud sealing device is disclosed wherein the shroud is formed from a plurality of segments, each segment having interengaging, "Z" shaped edges. The "Z" edges each have a mid-portion extending parallel to the rotational plane of a rotor blade wheel, and leading and trailing edge portions extending from this mid-portion to the leading and trailing edges of the shroud segments. A honeycomb packing structure seals the inner surface of the guide vane shroud in conjunction with labyrinth sealing fins on the rotor wheel. The honeycomb structure is oriented such that opposite sides of each cell which are joined to adjacent cells extend at an angle of approximately 60.degree. to the rotational plane of the rotor blade wheel.

REFERENCES:
patent: 2510734 (1950-06-01), Bodger
patent: 2997275 (1961-08-01), Bean et al.
patent: 3532437 (1970-10-01), Strub
patent: 3867061 (1975-02-01), Moskowitz
patent: 3986789 (1976-10-01), Pask
patent: 4076455 (1978-02-01), Stargardter
patent: 4272290 (1981-06-01), Lesgourgues
patent: 4295785 (1981-10-01), Lardellier
patent: 4346904 (1982-08-01), Watkins, Jr.
Seals for Rotating Shafts, Dr. E. S. Moult, Sep. 1975, pp. 727-731 Engineng.

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