Device for pivotally guiding variable-pitch vanes in a turbomachine
First Claim
1. A device for pivotally guiding variable-pitch vanes in a turbomachine, each vane having a radially outer pivot which is pivotally guided on a casing of the turbomachine and which is connected by a link to a control ring surrounding the casing, the pivot of each vane having a radially-inner portion which is pivotally guided in a cylindrical radial chimney of the said casing and a radially-outer end which is pivotally guided by a stationary element outside the casing, wherein the link connected to the control ring is secured to the pivot of the vane between the chimney and the stationary element and the control ring is supported and centered around the casing and at a distance from the casing by the links secured to the pivots of the vanes.
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Accused Products
Abstract
A device for guiding pivoting of variable-pitch vanes in a turbomachine, each vane having a pivot formed by a cylindrical axial shank which is guided in a cylindrical chimney of the casing and in a cylindrical orifice of a stationary element which surrounds the outside of the casing and which is centered and fixed relative thereto. The invention improves pivotal guidance of variable-pitch vanes.
24 Citations
20 Claims
- 1. A device for pivotally guiding variable-pitch vanes in a turbomachine, each vane having a radially outer pivot which is pivotally guided on a casing of the turbomachine and which is connected by a link to a control ring surrounding the casing, the pivot of each vane having a radially-inner portion which is pivotally guided in a cylindrical radial chimney of the said casing and a radially-outer end which is pivotally guided by a stationary element outside the casing, wherein the link connected to the control ring is secured to the pivot of the vane between the chimney and the stationary element and the control ring is supported and centered around the casing and at a distance from the casing by the links secured to the pivots of the vanes.
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15. A device for pivotally guiding a variable-pitch vane in a turbomachine, comprising:
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a control ring surrounding a casing of the turbomachine; a variable-pitch vane having a radially outer pivot which is pivotally guided on the casing and which is connected by a link to the control ring, the pivot of the vane having, a radially-inner portion which is pivotally guided in a cylindrical radial chimney of the casing, and a radially-outer end which is pivotally guided by a stationary element outside the casing, wherein the link connected to the control ring is secured to the pivot of the vane between the chimney and the stationary element, and the control ring is supported and centered around the casing and at a distance from the casing by the link secured to the pivot of the vane. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification