Blading for reaction turbine blade row

Claim 2

A blade for a steam turbine comprising: a leading edge; a trailing edge; a concave, pressure-side surface extending between the leading and trailing edges, and having a radius of curvature; and a convex, suction-side surface extending between the leading and trailing edges, and having a radius of curvature, said leading edge, trailing edges, convex and concave surfaces forming an airfoil, wherein the radius of curvature along the convex, suction-side surface continuously increases from the leading edge to the trailing edge; and wherein blade orientation is about 46°±3°.

Claim 3

A blade for a steam turbine comprising: a leading edge; a trailing edge; a concave, pressure-side surface extending between the leading and trailing edges, and having a radius of curvature; and a convex, suction-side surface extending between the leading and trailing edges, and having a radius of curvature, said leading edge, trailing edge, convex and concave surfaces forming an airfoil, wherein the radius of curvature along the convex, suction-side surface continuously increases from the leading edge to the trailing edge, and wherein the radius of curvature along the concave, pressure-side surface is substantially constant, and wherein blade orientation is about 46°±3°.

Claim 4

A blade for a steam turbine comprising: a leading edge; a trailing edge; a concave, pressure-side surface extending between the leading and trailing edges, and having a radius of curvature; and a convex, suction-side surface extending between the leading and trailing edges, and having a radius of curvature, said leading edge, trailing edge, convex and concave surfaces forming an airfoil, wherein the radius of curvature along the convex, suction-side surface continuously increases from the leading edge to the trailing edge, and wherein the radius of curvature along the concave, pressure-side surface is substantially constant, and wherein blade orientation is about 46°±3°.

Claim 5

A blade for a steam turbine comprising: a leading edge; a trailing edge; a concave, pressure-side surface extending between the leading and trailing edges, and having a radius of curvature; a convex, suction-side surface extending between the leading and trailing edges, and having a radius of curvature, said leading edge, trailing edge, convex and concave surfaces forming an airfoil, wherein the radius of curvature along the convex, suction-side surface continuously increases from the leading edge to the trailing edge; and a tenon formed on top of the airfoil, a cross-section of the tenon having a center of gravity offset from a center of gravity of the blade airfoil, wherein the center of gravity of the airfoil is at an intersection of x--x and y--y axes, and the center of gravity of a cross-section of the tenon is located near the y--y axis and above the center of gravity of the airfoil, wherein the x--x axis is in the direction of the steam flow.

Claim 6

A blade for a steam turbine comprising: a leading edge; a trailing edge; a concave, pressure-side surface extending between the leading and trailing edges, and having a radius of curvature; a convex, suction-side surface extending between the leading and trailing edges, and having a radius of curvature, said leading edge, trailing edge, convex and concave surfaces forming an airfoil, wherein the radius of curvature along the convex, suction-side surface continuously increases from the leading edge to the trailing edge; and a tenon formed on top of the airfoil, a cross-section of the tenon having a center of gravity offset from a center of gravity of the blade airfoil, wherein the center of gravity of the airfoil is at an intersection of x--x and y--y axes, and the center of gravity of a cross-section of the tenon is located near the y--y axis and above the center of gravity of the airfoil, wherein the x--x axis is in the direction of the steam flow.

Claim 7

A blade for a steam turbine as recited in claim 3, wherein the radius of curvature along the concave, pressure-side surface is substantially constant.

Claim 8

A blade for a steam turbine as recited in claim 3, wherein blade orientation is about 46°±3°.

Claim 9

A blade for a steam turbine as recited in claim 3, wherein the axis of the minimum principal moment of inertia of the tenon is at about a 65° angle relative to the x--x axis.

Claim 10

A blade for a steam turbine comprising: a leading edge; a trailing edge; a concave, pressure-side surface extending between the leading and trailing edges, and having a radius of curvature; a convex, suction-side surface extending between the leading and trailing edges, and having a radius of curvature, said leading edge, trailing edge, convex and concave surfaces forming an airfoil; wherein the radius of curvature along the convex, suction-side surface continuously increases from the leading edge to the trailing edge, and wherein the radius of curvature along the concave, pressure-side surface is substantially constant; a tenon formed on top of the airfoil, a cross-section of the tenon having a center of gravity offset from a center of gravity of the airfoil, wherein the center of gravity of the airfoil is at an intersection of x--x and y--y axes, and he center of gravity of a cross-section of the tenon is located near the y--y axis and above the center of gravity of the airfoil, wherein the x--x axis is in the direction of steam flow.

Claim 11

A blade for a steam turbine comprising: a leading edge; a trailing edge; a concave, pressure-side surface extending between the leading and trailing edges, and having a radius of curvature; a convex, suction-side surface extending between the leading and trailing edges, and having a radius of curvature, said leading edge, trailing edge, convex and concave surfaces forming an airfoil; wherein the radius of curvature along the convex, suction-side surface continuously increases from the leading edge to the trailing edge, and wherein the radius of curvature along the concave, pressure-side surface is substantially constant; a tenon formed on top of the airfoil, a cross-section of the tenon having a center of gravity offset from a center of gravity of the airfoil, wherein the center of gravity of the airfoil is at an intersection of x--x and y--y axes, and he center of gravity of a cross-section of the tenon is located near the y--y axis and above the center of gravity of the airfoil, wherein the x--x axis is in the direction of steam flow.

Claim 12

A blade for a steam turbine as recited in claim 7, wherein blade orientation is about 46°±3°.

Claim 13

A blade for a steam turbine as recited in claim 7, wherein the minimum principal moment of inertia of the tenon is at about a 65° angle relative to the x--x axis.