Compressor shrouds and shroud assemblies

Details Compressor shrouds and shroud assemblies Compressor shrouds and shroud assemblies

1985-01-31

1985-07-16

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

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

Erodable or permanently deformable

415170R, 415173R, F01D 1100

Patent

active

045293554

ABSTRACT:
To minimize leakage of high pressure compressor air from the high pressure side of an aixal flow compressor rotor back to the low pressure side by the outside of a ring of shroud segments, the shroud segments, or at least their front and rear edge portions, are made relatively thin and springy and are retained to a carrier ring so that those edge portions are held sprung against circumferentially extending sealing lands on the supporting structure. It is arranged that the bending in the shroud segments is effective to accommodate predetermined manufacturing tolerances in the shroud segments and the supporting structure, thus avoiding unwanted clearances at the sealing lands. Alternatively, or in addition, the bending can accommodate reductions in bending due to differential expansion between the components during operation of the compressor rotor at elevated temperatures.

REFERENCES:
patent: 2927724 (1960-03-01), Wardle
patent: 3056583 (1962-10-01), Varadi et al.
patent: 3146992 (1964-09-01), Farrell
patent: 3425665 (1969-02-01), Lingwood
patent: 3583824 (1971-06-01), Smuland
patent: 3703808 (1972-11-01), Stearns
patent: 3966354 (1976-06-01), Patterson
patent: 4472108 (1984-09-01), Pask

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