Variable area turbine vane arrangement

• US 8,007,229 B2
• Filed: 05/11/2010
• Issued: 08/30/2011
• Est. Priority Date: 05/24/2007
• Status: Active Grant

• Current Assignee: Rtx Corporation
• Original Assignee: United Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Suljak, George T. Jr., McCaffrey, Michael G., Hudson, Eric A., Farris, John R.
• Primary Examiner(s): Nguyen; Ninh H
• Assistant Examiner(s): McDowell; Liam
• Application Number:
  US12/778,084
• Publication Number:
  US 20100247293A1
• Time in Patent Office: 476 Days
• Field of Search: 415159-165, 415/191, 415/211.2, 415/209.3, 298/892.2
• US Class Current: 415/161
• CPC Class Codes: F01D 17/162 for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line F01D17/167 takes precedence
• CPC Class Codes: F01D 9/041 using blades F01D5/148 takes precedence
• CPC Class Codes: F04D 29/563 specially adapted for elastic fluid pumps
• CPC Class Codes: F05D 2240/40 Use of a multiplicity of similar components
• CPC Class Codes: F05D 2250/411 in rotation
• CPC Class Codes: Y10T 29/49323 Assembling fluid flow directing devices, e.g., stators, diaphragms, nozzles

Abstract

A ring vane nozzle for a gas turbine engine according to an exemplary aspect of the present disclosure includes a multiple of fixed turbine vanes between an inner vane ring and an outer vane ring and a multiple of rotational turbine vanes between the inner vane ring and the outer vane ring, each of the rotational turbine vanes rotatable about an axis of rotation.

Claims

1. A full ring vane nozzle for a gas turbine engine comprising:

an inner vane ring with a multiple of inner apertures;

an outer vane ring with a multiple of outer apertures;

a multiple of fixed turbine vanes between said inner vane ring and said outer vane ring; and

a multiple of rotational turbine vanes having a pocket and a spindle section along an axis of rotation, said multiple of rotational turbine vanes mountable between said inner vane ring and said outer vane ring, each of said multiple of rotational turbine vanes rotatable about said axis of rotation defined by a respective pair of said multiple of inner apertures and said multiple of outer apertures, said multiple of inner apertures and said multiple of outer apertures each sized to receive one of said multiple of rotational turbine vanes at an angle with respect to said inner vane ring and said outer vane ring.

2. The full ring vane nozzle as recited in claim 1, wherein said multiple of fixed turbine vanes alternate with said multiple of rotational turbine vanes.

3. The full ring vane nozzle as recited in claim 1, wherein said axis of rotation of each of said multiple of rotational turbine vanes is aft of a geometric center of gravity of a cross section of said rotational turbine vane.

4. The full ring vane nozzle as recited in claim 1, wherein said axis of rotation of each of said multiple of rotational turbine vanes is located approximately midway between a trailing edge of said fixed turbine vane and a trailing edge of said rotational turbine vane.

5. The full ring vane nozzle as recited in claim 1, wherein said respective apertures of said multiple of inner apertures and said multiple of outer apertures each receive one of a cartridge bearing and a bearing.

6. The full ring vane nozzle as recited in claim 1, wherein said angle is with respect to said axis of rotation.

7. The full ring vane nozzle as recited in claim 1, wherein each of said multiple of rotational turbine vanes are receivable into a respective pair of said multiple of inner apertures and said multiple of outer aperture at said angle which is off said axis of rotation.

8. A method of assembling a vane nozzle for a gas turbine engine comprising:

placing a multiple of fixed turbine vanes between an inner vane ring and an outer vane ring;

receiving each of a multiple of rotational turbine vanes at an angle with respect to the inner vane ring and the outer vane ring, each of the multiple of rotational turbine vanes rotatable about an axis of rotation defined by a respective pair of a multiple of inner apertures within the inner vane ring and a multiple of outer apertures within the outer vane ring, the multiple of inner apertures and the multiple of outer apertures are larger than a pocket and a spindle section of each of the multiple of rotational turbine vanes.

9. The method as recited in claim 8, further comprising:

receiving one of a cartridge bearing and a bearing assembly within each of the multiple of inner apertures and the multiple of outer apertures.

10. The method as recited in claim 9, further comprising:

receiving the cartridge bearing and a bearing assembly within each of the multiple of inner apertures and the multiple of outer apertures.

11. The method as recited in claim 9, further comprising:

receiving the bearing cartridge through one of the multiple of inner apertures and the multiple of outer apertures and into the pocket.

12. The method as recited in claim 9, further comprising:

receiving the bearing assembly through one of the multiple of inner apertures and the multiple of outer apertures and onto the spindle section.