Steam turbine rotating blade for a low pressure section of a steam turbine engine
AssigneeGeneral Electric Company
InventorsMuhammad Saqib Riaz, Qingxuan Michael Zhang
Life of this patent
Estimating the term…
Abstract
A steam turbine rotating blade for a low pressure section of a steam turbine engine is disclosed. The steam turbine rotating blade includes an airfoil portion. A root section is attached to one end of the airfoil portion. A dovetail section projects from the root section, wherein the dovetail section includes a tangential entry dovetail. A tip section is attached to the airfoil portion at an end opposite from the root section. A cover is integrally formed as part of the tip section. The blade includes an exit annulus area of about 18.1 ft2 (1.68 m2) or greater.
Claims20
A steam turbine rotating blade, comprising:
- an airfoil portion;
- a root section attached to one end of the airfoil portion;
- a dovetail section projecting from the root section, wherein the dovetail section comprises a tangential entry dovetail;
- a tip section attached to the airfoil portion at an end opposite from the root section;
- a cover integrally formed as part of the tip section;
- and
- wherein the blade comprises an exit annulus area of about 18.1 ft2 (1.68 m2) or greater.
A low pressure turbine section of a steam turbine, comprising:
- a plurality of latter stage steam turbine blades arranged about a turbine rotor wheel, wherein each of the plurality of latter stage steam turbine blades comprises:
- an airfoil portion having a length of 12 inches (30.48 centimeters) or greater;
- a root section attached to one end of the airfoil portion;
- a dovetail section projecting from the root section, wherein the dovetail section comprises a tangential entry dovetail;
- a tip section attached to the airfoil portion at an end opposite from the root section;
- a cover integrally formed as part of the tip section;
- and
- wherein the plurality of latter stage steam turbine blades comprises an exit annulus area of 18.1 ft2 (1.68 m2) or more.
Dependencies are inferred from the claim text.