US 6,607,358 B2 · Multi-component hybrid turbine blade

Abstract

A multi-component hybrid turbine blade comprises a shank portion and an airfoil portion. The airfoil portion comprises a composite section having a first density. The composite section comprises a recess and an insert section. The insert section has a second mass density, which is less than the first mass density. The insert section is disposed in the recess, and the insert section is bonded to the composite section. The composite section and the insert section together define an airfoil shape. A fabrication method comprising laying up composite material layers to form a portion of the composite section. The portion of the composite section comprises a recess. Disposing the insert section in the recess. Laying up additional composite material layers to achieve a final desired thickness of the composite section while covering the insert section.

Claims50

Dependent claims

A multi-component hybrid turbine blade comprising:

an airfoil portion comprising a composite section having a first density and a recess, said airfoil portion further comprising an insert section having a second mass density, which is less than said first mass density;
wherein said insert section is disposed in said recess and bonded to said composite section;
wherein said composite section and said insert section together define an airfoil shape, wherein said composite section comprises a plurality of composite material layers comprising fiber filaments embedded in a matrix binder, and wherein said matrix binder comprises a toughening material.

A hybrid turbine blade comprising:

an airfoil portion comprising a composite section having a first density and a recess, said airfoil portion further comprising an insert section having a second mass density, which is less than said first mass density, wherein said insert section is disposed in said recess and bonded to said composite section, and wherein said composite section and said insert section together define an airfoil shape;
an erosion coating disposed on and bonded to at least a portion of a pressure side of said composite section;
and
a protective leading edge coating disposed on a portion of said erosion coating along a leading edge of said airfoil portion and a portion of a suction side of said composite section.

1 more element

A hybrid turbine blade comprising:

a shank portion;
and
an airfoil portion comprising a composite section having a first density and a recess, said airfoil portion further comprising an insert section having a second mass density, which is less than said first mass density, wherein said insert section is disposed in said recess and bonded to said composite section, wherein said composite section and said insert section together define an airfoil shape, wherein said insert section further comprises:
a pressure side tapered leading edge disposed between a pressure side of said insert section and an insert leading edge so as to form a first pressure side interior angle, wherein said first pressure side interior angle is typically in a range from about 20 degrees to about 179 degrees, wherein said first pressure side interior angle is measured between said pressure side tapered leading edge and said pressure side of said insert section;
a suction side tapered leading edge disposed between a suction side of said insert section and said insert leading edge so as to form a first suction side interior angle, wherein said first suction side interior angle is typically in a range from about 20 degrees to about 179 degrees, wherein said first suction side interior angle is measured between said suction side tapered leading edge and said suction side of said insert section;
a pressure side tapered trailing edge disposed between said pressure side of said insert section and said insert trailing edge so as to form a second pressure side interior angle, wherein said second pressure side interior angle is typically in a range from about 20 degrees to about 179 degrees, wherein said second pressure side interior angle is measured between said pressure side tapered trailing edge and said pressure side of said insert section;
a suction side tapered trailing edge disposed between said suction side of said insert section and said insert trailing edge so as to form a second suction side interior angle, wherein said second suction side interior angle is typically in a range from about 20 degrees to about 179 degrees, wherein said second suction side interior angle is measured between said suction side tapered trailing edge and said suction side of said insert section;
a pressure side tapered blade tip edge disposed between said pressure side of said insert section and said insert blade tip edge so as to form a third pressure side interior angle, wherein said third pressure side interior angle is typically in a range from about 20 degrees to about 179 degrees, wherein said third pressure side interior angle is measured between said pressure side tapered blade tip edge and said pressure side of said insert section;
a suction side tapered blade tip edge disposed between said suction side of said insert section and said insert blade tip edge so as to form a third suction side interior angle, wherein said third suction side interior angle is typically in a range from about 20 degrees to about 179 degrees, wherein said third suction side interior angle is measured between said suction side tapered blade tip edge and said suction side of said insert section;
and
a pressure side tapered blade root edge disposed between said pressure side of said insert section and said insert blade root edge so as to form a fourth pressure side interior angle, wherein said fourth pressure side interior angle is typically in a range from about 20 degrees to about 179 degrees, wherein said fourth pressure side interior angle is measured between said pressure side tapered blade root edge and said pressure side of said insert section;
and a suction side tapered blade root edge disposed between said suction side of said insert section and said insert leading edge so as to form a fourth suction side interior angle, wherein said fourth suction side interior angle is typically in a range from about 20 degrees to about 179 degrees, wherein said fourth suction side interior angle is measured between said suction side tapered blade root edge and said suction side of said insert section.

9 more elements

Dependencies are inferred from the claim text.

Multi-component hybrid turbine blade

Life of this patent

Multi-component hybrid turbine blade

Life of this patent

Abstract

Claims50