APPARATUS FOR PREVENTING AXIAL-FLOW COMPRESSOR FROM STALLING BY EMPLOYING CASING TREATMENT

摘要

An apparatus for preventing an axial-flow compressor from stalling by employing a casing treatment includes an outer casing having an inner wall with a slot formed to face a rotor blade, an inner casing moveable so as to open the slot in an unstable operating region and close the slot of the outer casing in a stable operating region, and a drive means for moving the inner casing along the axial direction of the outer casing. Thus, the apparatus can be applied not only to a casing treatment structure where the slope of a slot does not vary with the rotational position of the rotor, but also to a casing with a variously shaped slot such as a radial slot or an axial skewed slot.

主权项

1. An apparatus for preventing an axial-flow compressor from stalling by employing a casing treatment, in which the axial-flow compressor comprises an outer casing having a slot formed in an inner wall faced with a rotor, the apparatus comprising:
an inner casing moveable in an axial direction of the outer casing to open or close the slot of the outer casing; and a drive means to move the inner casing in an axial direction of the outer casing.