TURBINE NOZZLE AIRFOIL PROFILE

• US 20130136589A1
• Filed: 11/28/2011
• Published: 05/30/2013
• Est. Priority Date: 11/28/2011
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: Gustafson, Ross James, Winn, Aaron Gregory
• Granted Patent: US 8,876,485 B2
• Time in Patent Office: Days
• US Class Current: 415/202
• CPC Class Codes: F01D 5/141 Shape, i.e. outer, aerodynamic form F01D5/148 - F01D5/20 take precedence; blade construction F01D5/147
• CPC Class Codes: F01D 9/041 using blades F01D5/148 takes precedence
• CPC Class Codes: F05D 2240/12 Fluid guiding means, e.g. vanes
• CPC Class Codes: F05D 2240/30 Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
• CPC Class Codes: F05D 2250/74 given by a set or table of xyz-coordinates

Abstract

The present application provides a turbine nozzle including an airfoil shape. The airfoil shape may have a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table 1. The Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances in inches by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil in inches. The X and Y values are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The airfoil profile sections at Z distances may be joined smoothly with one another to form a complete airfoil shape.

Claims

1. A turbine nozzle comprising an airfoil shape, the airfoil shape having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table 1 wherein the Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances in inches by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil in inches, and wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z, the airfoil profile sections at Z distances being joined smoothly with one another to form a complete airfoil shape.

2. The turbine nozzle of claim 1, wherein the turbine nozzle comprises a stage nozzle of a turbine.

3. The turbine nozzle of claim 1, wherein the turbine nozzle forms part of a stage of a turbine.

4. The turbine nozzle of claim 1, wherein the airfoil shape lies in an envelope within at least one of +/−

5% and/or +/−

5% of a chord length in a direction normal to any airfoil surface location.

5. The turbine nozzle of claim 1, wherein a height of the turbine nozzle is about 5 inches to about 50 inches (about 12 centimeters to about 130 centimeters) in length.

6. The turbine nozzle of claim 1, wherein the X, Y and Z distances are scalable as a function of the same constant or number to provide a scaled-up or scaled-down airfoil.

7. A turbine nozzle comprising a nozzle airfoil having a suction-side uncoated nominal airfoil profile substantially in accordance with suction-side Cartesian coordinate values of X, Y and Z set forth in Table 1 wherein the Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances in inches by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil in inches, and wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each Z distance, the airfoil profile sections at the Z distances being joined smoothly with one another to form a complete suction-side airfoil shape, the X, Y and Z distances being scalable as a function of the same constant or number to provide a scaled-up or scaled-down airfoil.

8. The turbine nozzle of claim 7, wherein the turbine nozzle comprises a stage nozzle of a turbine.

9. The turbine nozzle of claim 7, wherein the turbine nozzle forms part of a stage of a turbine.

10. The turbine nozzle of claim 7, wherein the airfoil shape lies in an envelope within at least one of +/−

5% and/or +/−

5% of a chord length in a direction normal to any airfoil surface location.

11. The turbine nozzle of claim 7, wherein a height of the turbine nozzle is about 5 inches to about 50 inches (about 12 centimeters to about 130 centimeters) in length.

12. A turbine comprising a plurality of nozzles, each of the nozzles comprising an airfoil having an airfoil shape, the airfoil having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table 1 wherein the Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances in inches by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil in inches, and wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each Z distance, the airfoil profile sections at Z distances being joined smoothly with one another to form a complete airfoil shape.

13. The turbine of claim 12, wherein the plurality of nozzles comprises a plurality of stage nozzles of the turbine.

14. The turbine of claim 12, wherein the plurality of nozzles forms part of a stage of a turbine.

15. The turbine of claim 12, wherein the airfoil shape lies in an envelope within at least one of +/−

5% and/or +/−

5% of a chord length in a direction normal to any airfoil surface location.

16. The turbine of claim 12, wherein a height of the turbine nozzle is about 5 inches to about 50 inches (about 12 centimeters to about 130 centimeters) in length.

17. The turbine of claim 12, wherein the X, Y and Z distances are scalable as a function of the same constant or number to provide a scaled-up or scaled-down airfoil.

18. The turbine of claim 12, wherein X represents a distance parallel to a turbine axis of rotation.