Apparatus for preventing axial-flow compressor from stalling by employing casing treatment
AssigneeKorea Aerospace Research Institute
InventorsByeung Jun Lim, Tae Choon Park, Young Seok Kang
Life of this patent
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Abstract
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.
Claims11
An apparatus for preventing an axial-flow compressor from stalling by employing a casing treatment, in which the axial-flow compressor comprises a casing having a plurality of slots formed in an inner wall faced with a rotor, the apparatus comprising:
- a plurality of sliders to be slidably inserted into the plurality of slots, respectively;
- a plurality of first links, each of the plurality of first links having one end connected with one of the plurality of sliders, respectively, and the plurality of first links being rotatable relative to the plurality of sliders;
- a plurality of second links, each having one end connected with an other end of the plurality of first links, respectively, and being rotatable relative to the other ends of the plurality of first links;
- and
- a plurality of rotational shafts fixedly coupled with other ends of the plurality of second links, respectively,
- wherein a drive force transmitting member is disposed between the plurality of rotational shafts so that the plurality of rotational shafts are rotated in a same direction.
Dependencies are inferred from the claim text.