Turbine blade airfoil profile

Patent metadata

Field	Value
Publication number	US-11566525-B1
Application number	US-202217890479-A
Country	US
Kind code	B1
Filing date	Aug 18, 2022
Priority date	Aug 18, 2022
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

Various embodiments of the disclosure include turbine blades and systems employing such blades. Various embodiments include a turbine blade having: an airfoil having an airfoil shape having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in TABLE I. The Cartesian coordinate values are non-dimensional values of from 0% to 100% convertible to distances by multiplying the values by a height of the airfoil expressed in units of distance. The X and Y values are connected by smooth continuing arcs to define airfoil profile sections at each distance Z along at least a portion of the airfoil, the profile sections at the Z distances being joined smoothly with one another to form the nominal profile.

First claim

We claim:

1. A turbine blade comprising:
an airfoil having: a suction side, a pressure side opposing the suction side, a leading edge spanning between the pressure side and the suction side, and a trailing edge opposing the leading edge and spanning between the pressure side and the suction side; and
an endwall connected with the airfoil along the suction side, the pressure side, the trailing edge and the leading edge;
wherein at least one of a suction side or a pressure side of the airfoil has a shape having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in TABLE I, wherein the Cartesian coordinate values are non-dimensional values of from 0% to 100% convertible to distances by multiplying the values by a height of the airfoil expressed in units of distance, and wherein X and Y values connected by smooth continuing arcs define airfoil profile sections at each distance Z along at least a portion of the airfoil, the profile sections at the Z distances being joined smoothly with one another to form the nominal profile.

2. The turbine blade of claim 1 , wherein the turbine blade includes a first stage blade.

3. The turbine blade of claim 1 , further comprising a fillet connecting a surface of the endwall to a surface of the airfoil.

4. The turbine blade of claim 1 , wherein the shape having the nominal profile substantially in accordance with the Cartesian coordinate values of X, Y and Z set forth in TABLE I includes the airfoil profile sections defined within 5% and 95% of the height of the airfoil.

5. The turbine blade of claim 1 , wherein the shape having the nominal profile substantially in accordance with the Cartesian coordinate values of X, Y and Z set forth in TABLE I includes the airfoil profile sections defined within 10% and 90% of the height of the airfoil.

6. The turbine blade of claim 1 , wherein each of the suction side and the pressure side of the airfoil has a shape having a respective nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table I, wherein the Cartesian coordinate values are non-dimensional values of from 0% to 100% convertible to distances by multiplying the values by the height of the airfoil expressed in units of distance, and wherein X and Y values connected by smooth continuing arcs define airfoil profile sections at each distance Z along at least a portion of the airfoil, the airfoil profile sections at the Z distances being joined smoothly with one another to form the respective nominal profiles.

7. A rotor blade section for a turbine, the rotor blade section comprising:
a set of rotating blades, the set of rotating blades including at least one blade having:
an airfoil having: a suction side, a pressure side opposing the suction side, a leading edge spanning between the pressure side and the suction side, and a trailing edge opposing the leading edge and spanning between the pressure side and the suction side; and

an endwall connected with the airfoil along the suction side, the pressure side, the trailing edge and the leading edge;
wherein at least one of a suction side or a pressure side of the airfoil has a shape having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in TABLE I, wherein the Cartesian coordinate values are non-dimensional values of from 0% to 100% convertible to distances by multiplying the values by a height of the airfoil expressed in units of distance, and wherein X and Y values connected by smooth continuing arcs define airfoil profile sections at each distance Z along at least a portion of the airfoil, the profile sections at the Z distances being joined smoothly with one another to form the nominal profile.

8. The rotor blade section of claim 7 , further comprising a fillet connecting a surface of the endwall to a surface of the airfoil.

9. The rotor blade section of claim 7 , wherein the rotor blade section is a first stage blade section.

10. The rotor blade section of claim 7 , wherein the shape having the nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in TABLE I includes the airfoil profile sections defined within 5% and 95% of the height of the airfoil.

11. The rotor blade section of claim 7 , wherein the shape having the nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in TABLE I includes the airfoil profile sections defined within 10% and 90% of the height of the airfoil.

12. A turbine comprising a plurality of rotor blades, each of the plurality of rotor blades comprising:
an airfoil having: a suction side, a pressure side opposing the suction side, a leading edge spanning between the pressure side and the suction side, and a trailing edge opposing the leading edge and spanning between the pressure side and the suction side; and
an endwall connected with the airfoil along the suction side, the pressure side, the trailing edge and the leading edge;
wherein at least one of a suction side or a pressure side of the airfoil has a shape having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in TABLE I, wherein the Cartesian coordinate values are non-dimensional values of from 0% to 100% convertible to distances by multiplying the values by a height of the airfoil expressed in units of distance, and wherein X and Y values connected by smooth continuing arcs define airfoil profile sections at each distance Z along at least a portion of the airfoil, the profile sections at the Z distances being joined smoothly with one another to form the nominal profile.

13. The turbine of claim 12 , further comprising a fillet connecting a surface of the endwall to a surface of the airfoil.

14. The turbine of claim 12 , wherein the turbine rotor blade includes a first stage rotor blade.

15. The turbine of claim 12 , wherein the shape having the nominal profile substantially in accordance with the Cartesian coordinate values of X, Y and Z set forth in TABLE I includes the airfoil profile sections defined within 5% and 95% of the height of the airfoil.

16. The turbine of claim 12 , wherein the shape having the nominal profile substantially in accordance with the Cartesian coordinate values of X, Y and Z set forth in TABLE I includes the airfoil profile sections defined within 10% and 90% of the height of the airfoil.

Assignees

• Gen Electric

Inventors

• Ristau Neil Devin
• Coletti Kristen Barbara
• Agudo Jan Emeric

Classifications

• F05D2240/30

  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 title

• F01D5/141 Primary

  Shape, i.e. outer, aerodynamic form (F01D5/148 - F01D5/20 take precedence; blade construction F01D5/147) · CPC title

• F05D2220/30

  in turbines · CPC title

• F01D5/30

  Fixing blades to rotors; Blade roots {; Blade spacers} · CPC title

• F01D5/147

  Construction, i.e. structural features, e.g. of weight-saving hollow blades (F01D5/148, F01D5/16 and F01D5/20 take precedence; blade shape F01D5/141; blades with cooling or heating channels or cavities F01D5/18; heating, heat-insulating or cooling means on blades F01D5/18) · CPC title