Cooled vane of a turbine and corresponding turbine

Patent metadata

Field	Value
Publication number	US-9822643-B2
Application number	US-201113701911-A
Country	US
Kind code	B2
Filing date	Apr 29, 2011
Priority date	Jun 7, 2010
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

A vane is provided for use in a fluid flow of a turbine engine. The vane includes a thin-walled radially extending aerodynamic vane body having axially spaced leading and trailing edges, and a radially outer platform. The wall of the vane body includes an outer shell and an inner shell and defines an interior cavity therein for flowing a cooling medium. A radially extending load strut is arranged at the inner shell of the wall of the leading edge of the vane body.

First claim

The invention claimed is:

1. A vane for use in a fluid flow of a turbine engine, comprising:
a thin-walled radially extending aerodynamic vane body having axially spaced leading and trailing edges, the wall of said vane body comprising an outer surface and an inner surface, the wall of said vane body defining an interior cavity therein for flowing a cooling medium, and
a radially outer platform comprising a front rail, wherein the radially outer platform covers an end of the vane body,
wherein a radially extending load strut is connected to the inner surface at the leading edge of the vane body, wherein the load stmt braces the vane body against the front rail of the radially outer platform, wherein the load strut tapers in the radially inward direction,
wherein the wall of the vane body and the load stmt are integrally formed and are produced in one operation in a common mold.

2. The vane according to claim 1 , wherein the load strut is arranged at the outer platform.

3. The vane according to claim 1 , wherein the wall of the vane body, the outer platform and the load stmt are integrally formed and are produced in one operation in a common mold.

4. The vane according to claim 1 , wherein the load strut is arranged at the inner surface of the wall of the entire leading edge of the vane body.

5. The vane according to claim 2 , wherein a protrusion is arranged at the inner surface of the wall and in the central area of the vane body, wherein, the load stmt is averted from the protrusion to the outer platform.

6. The vane according to claim 5 , wherein the protrusion has a U-shaped, ring-shaped or ringlike form.

7. The vane according to claim 5 , wherein the protrusion and the wall of the vane body are integrally formed and are fabricated in one operation in a common mold.

8. The vane according to claim 5 , wherein the load stmt is welded to the protrusion, to the wall of the vane body and to the outer platform.

9. The vane according to claim 1 , wherein the vane further comprises an inner platform.

10. The vane according to claim 1 , wherein the vane comprises metal, ceramic or fiber composite.

11. The vane according to claim 1 , wherein the vane is a guide vane of a guide wheel of a turbine engine.

12. A turbine engine, comprising:
at least one rotating wheel with a plurality of rotating vanes, and
at least one guide wheel with a plurality of guide vanes,
wherein the plurality of rotating vanes and/or the guide vanes includes a vane according to claim 1 .

13. The turbine engine according to claim 12 , wherein the turbine engine is a gas turbine engine or a steam turbine engine.

14. The vane according to claim 2 , wherein the load strut is arranged from a central area of the vane body to the outer platform.

15. The vane according to claim 1 , wherein the load strut comprises a rectangular cross-section form.

Assignees

• Batt Stephen
• Pacey Andy
• Siemens Ag

Inventors

• Batt Stephen
• Pacey Andy

Classifications

• F01D5/181 Primary

  Blades having a closed internal cavity containing a cooling medium, e.g. sodium · CPC title

• F05D2300/603

  Composites; e.g. fibre-reinforced · CPC title

• F01D9/042

  fixing blades to stators (fixing stator-rings in the casing or to each other F01D25/246) · CPC title

• F01D5/041 Primary

  of the Ljungström type · CPC title

• F01D9/041

  using blades (F01D5/148 takes precedence) · CPC title