Unison ring assembly for an axial compressor casing
First Claim
1. A unison ring assembly for an axial compressor casing, comprising:
- a unison ring;
at least three unison ring supports equally spaced arranged along a circumference of the unison ring, wherein each unison ring support comprisesa unison ring bracket fixed to the unison ring;
a slide bearing to be sliding along a slide face of an outer surface of the compressor casing;
a resilient member being arranged between and coupled to the slide bearing and the unison ring bracket such that the unison ring is rotatable around the compressor casing by sliding the slide bearing along the slide face and to be centered free of clearance about the compressor casing; and
a raising device adapted to raise the slide bearing towards the unison ring bracket thereby compressing the resilient member,wherein each resilient member is adapted to accommodate radial displacement of the compressor casing,wherein each resilient member comprises at least one slide pin with a first end supported at the unison ring bracket of the respective unison ring support and a second end extending in a radial direction towards a centre of the unison ring together with an elastic element, the elastic element being arranged between the second end of the slide pin and the slide bearing.
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Accused Products
Abstract
A unison ring assembly for an axial compressor casing is provided. The unison ring assembly includes a unison ring and at least three unison ring supports being radial inwardly and equally spaced arranged along a circumference of the unison ring, wherein each unison ring support has a unison ring bracket attached to the unison ring. Further, the unison ring assembly includes a slide bearing to be sliding along a slide face of an outer surface of the compressor casing and a resilient member being arranged between and coupled to the slide bearing and the unison ring bracket such that the unison ring is rotatable around the compressor casing by sliding the slide bearing along the slide face and to be centered free of clearance about the compressor casing. The resilient member is adapted to accommodate radial displacement of the compressor casing.
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Citations
15 Claims
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1. A unison ring assembly for an axial compressor casing, comprising:
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a unison ring; at least three unison ring supports equally spaced arranged along a circumference of the unison ring, wherein each unison ring support comprises a unison ring bracket fixed to the unison ring; a slide bearing to be sliding along a slide face of an outer surface of the compressor casing; a resilient member being arranged between and coupled to the slide bearing and the unison ring bracket such that the unison ring is rotatable around the compressor casing by sliding the slide bearing along the slide face and to be centered free of clearance about the compressor casing; and a raising device adapted to raise the slide bearing towards the unison ring bracket thereby compressing the resilient member, wherein each resilient member is adapted to accommodate radial displacement of the compressor casing, wherein each resilient member comprises at least one slide pin with a first end supported at the unison ring bracket of the respective unison ring support and a second end extending in a radial direction towards a centre of the unison ring together with an elastic element, the elastic element being arranged between the second end of the slide pin and the slide bearing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An axial compressor, comprising:
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a casing; and a unison ring assembly, comprising; a unison ring; at least three unison ring supports equally spaced arranged along a circumference of the unison ring, wherein each unison ring support comprises a unison ring bracket fixed to the unison ring; a slide bearing to be sliding along a slide face of an outer surface of the compressor casing; a resilient member being arranged between and coupled to the slide bearing and the unison ring bracket such that the unison ring is rotatable around the compressor casing by sliding the slide bearing along the slide face and to be centered free of clearance about the compressor casing; a raising device adapted to raise the slide bearing towards the unison ring bracket thereby compressing the resilient member wherein each resilient member is adapted to accommodate radial displacement of the compressor casing, wherein each resilient member comprises at least one slide pin with a first end supported at the unison ring bracket of the respective unison ring support and a second end extending in a radial direction towards a centre of the unison ring together with an elastic element, the elastic element being arranged between the second end of the slide pin and the slide bearing. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for mounting a unison ring assembly on an axial compressor casing, comprising:
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providing a unison ring assembly separate from an axial compressor casing with a slide face of an outer surface of the compressor casing, the unison ring assembly including a unison ring, at least three unison ring supports equally spaced arranged along a circumference of the unison ring, wherein each unison ring support comprises a unison ring bracket fixed to the unison ring, a slide bearing to be sliding along a slide face of an outer surface of the compressor casing, a resilient member being arranged between and coupled to the slide bearing and the unison ring bracket such that the unison ring is rotatable around the compressor casing by sliding the slide bearing along the slide face and to be centered free of clearance about the compressor casing, a raising device adapted to raise the slide bearing towards the unison ring bracket thereby compressing the resilient member, wherein each resilient member is adapted to accommodate radial displacement of the compressor casing, and wherein each resilient member comprises at least one slide pin with a first end supported at the unison ring bracket of the respective unison ring support and a second end extending in a radial direction towards a centre of the unison ring together with an elastic element, the elastic element being arranged between the second end of the slide pin and the slide bearing; simultaneously compressing the resilient members of each unison ring support by actuating the raising devices such that the slide bearings of each unison ring support define an inner diameter being at least equal or grater than the outer diameter of the slide face; shifting the unison ring assembly in an axial direction of the compressor casing over the slide face; and releasing the resilient members of each unison ring support by actuating the raising devices such that the slide bearings abut on the slide face.
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Specification