Guide vane stage of a compressor

• US 20020085916A1
• Filed: 11/30/2001
• Published: 07/04/2002
• Est. Priority Date: 12/06/2000
• Status: Active Grant

• Current Assignee: Techspace Aã©Ro SA (Safran SA)
• Original Assignee: Techspace Aã©Ro SA (Safran SA)
• Inventors: Bos, Mathieu
• Granted Patent: US 6,595,747 B2
• Time in Patent Office: Days
• US Class Current: 416/215
• CPC Class Codes: F01D 9/042 fixing blades to stators fixing stator-rings in the casing or to each other F01D25/246
• CPC Class Codes: F04D 29/542 Bladed diffusers fixing blades to stators F01D9/042

Abstract

The present invention relates to a guide vane stage of a compressor comprising an outer ring and an inner ring, both of which are concentric and preferably circular. The rings are connected to each other via a series of fixed vanes, characterized in that at least one of the rings is provided with a series of holes or apertures which allow the vanes to pass through these holes or apertures. The fixed vanes also have, at at least one of their ends, an aperture to allow at least one locking element to pass through, making it possible to simultaneously securely fasten all the present in the guide vane stage, on the non-functional side of the ring. The end of the fixed vanes through which the locking element passes is buried in an elastomeric element.

Claims

1. A guide vane stage of a compressor comprising:

an outer ring;

an inner ring concentric with said outer ring;

a plurality of fixed vanes connecting said outer ring and said inner ring, said vanes comprising at at least one of their ends an aperture, wherein at least one of the inner and outer rings has a series of apertures which allow said vanes to pass through said apertures; and

a locking element for simultaneously securely fastening said vanes on the nonfunctional side of said at least one ring comprising said series of apertures by passing through said aperture in said vanes.

2. The guide vane stage of claim 1 further comprising an elastic element, wherein the end of the vane through which said locking element passes is buried in said elastic element.

3. The guide vane stage of claim 1, wherein said rings are circular.

4. The guide vane stage of claim 1, wherein said locking element comprises a tape which passes successively through said apertures of said vanes.

5. The guide vane stage of claim 3, wherein said tape comprises one or more pieces having an elastic function.

6. The guide vane stage of claim 1, wherein said inner ring has said series of apertures which allow said vanes to pass through said apertures.

7. The guide vane stage of claim 1 wherein said outer ring has said series of apertures which allow said vanes to pass through said apertures.

8. The guide vane stage of claim 1, wherein both said inner ring and said outer ring have said series of apertures which allow said vanes to pass through said apertures.