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Removable throat mounted inlet guide vane

  • US 9,243,648 B2
  • Filed: 07/19/2010
  • Issued: 01/26/2016
  • Est. Priority Date: 07/20/2009
  • Status: Active Grant
First Claim
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1. A system for gas compression, comprising:

  • an inlet guide vane assembly, comprising;

    a plurality of inlet guide vanes disposed in a radial pattern around a central axis and configured to rotate about axes crosswise to the central axis;

    an inner housing disposed around the central axis and surrounding the plurality of inlet guide vanes;

    an actuating ring disposed around the inner housing;

    a plurality of vane shafts, wherein each vane shaft of the plurality of vane shafts is coupled to a respective inlet guide vane of the plurality of inlet guide vanes and is configured to rotate with the respective inlet guide vane about the respective axis;

    a plurality of crank arms, wherein each crank arm of the plurality of crank arms is connected to a respective vane shaft of the plurality of vane shafts and each crank arm is further connected to the actuating ring, and each crank arm of the plurality of crank arms is configured to rotate with its respective vane shaft of the plurality of vane shafts;

    a drive shaft coupled to a primary inlet guide vane of the plurality of inlet guide vanes, wherein the drive shaft is coupled to the actuating ring with a primary crank arm of the plurality of crank arms, wherein a rotation of the drive shaft rotates the primary inlet guide vane along a common rotational axis, and the rotation of the drive shaft rotates the actuating ring via the primary crank arm which causes secondary inlet guide vanes of the plurality of inlet guide vanes to rotate about their respective axes offset from the common rotational axis;

    a rotary actuator coupled to the drive shaft and configured to cause rotation of the drive shaft; and

    a plurality of linkages, wherein each linkage of the plurality of linkages is connected to a respective crank arm of the plurality of crank arms and is connected to the actuating ring, wherein each linkage of the plurality of linkages comprise a pair of eye-shaped holes configured to mate with spherical bearings on the plurality of cranks arms and the actuating ring.

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