Axial flow compressor

Details Axial flow compressor Axial flow compressor

1991-09-25

1992-06-02

Bertsch, Richard A.

Power plants

Reaction motor

Interrelated reaction motors

60 3907, 415115, F02K 302, F02C 618, F02G 300

Patent

active

051176297

ABSTRACT:
An axial flow compressor with an inner casing and an outer casing. The inner casing has bleed apertures. The outer casing is provided with loading devices which are positioned adjacent to the bleed apertures such that the loading devices apply loads on the inner casing in the vicinity of the bleed apertures. Components of the loads applied by the loading devices are arranged to oppose and preferably balance any loads applied on the inner casing due to the bleed apertures' releasing the pressure differential across the inner casing. The loading devices comprise cylinders secured to the inner casing and pistons secured to the outer casing to form chambers. The chambers are supplied with fluid at a predetermined pressure. The loading devices oppose undesirable local reductions in clearance between static shrouds and the rotor blades. In one embodiment, the pressure inside the inner casing is a relatively high pressure, the pressure between the inner and outer casings is a lower pressure, and the predetermined pressure supplied to the chambers of the loading devices is a still lower pressure.

REFERENCES:
patent: 4472108 (1984-09-01), Pask
patent: 4529355 (1985-07-01), Wilkinson
patent: 4596116 (1986-06-01), Mandet et al.
patent: 4683716 (1987-08-01), Wright et al.
patent: 4696619 (1987-09-01), Lardellier
patent: 5048288 (1991-09-01), Bessette et al.
patent: 5056988 (1991-10-01), Corsmeier

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