General Electric Company

Holly Renae Davis

Peter Ping-Liang Sue

Rohit Chouhan

William Scott Zemitis

Robert Alan Brittingham

Craig Allen Bielek

Michael Allen Ball

Jason Douglas Herzlinger

Ariel Caesar Prepena Jacala

Linda Jean Farral

Lakshmanan Valliappan

Jonathan Glenn Reed

Piotr Edward Kobek

Luis Manuel Herrera

Tomasz Ryszard Szmigiel

Chistopher Paul Keener

A rotatable blade for use in a turbomachine includes an airfoil portion having a leading edge, a trailing edge a radially-inner end and a radially-outer end; a root section at to the radially-inner end of the airfoil portion, and a part-span shroud located on the airfoil portion between the root section and the radially-outer end. The part-span shroud decreases in width and thickness from decreasing in width and thickness from the airfoil portion to a contact surface adapted to engage a mating contact surface on a part-span shroud of an adjacent blade.

Tapered part-span shroud

A turbine bucket is provided including a bucket airfoil having an airfoil shape, the bucket 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 distance Z, the airfoil profile sections at Z distances being joined smoothly with one another to form a complete airfoil shape.

Airfoil shape for turbine bucket and turbine incorporating same

A system for positioning a sensor through an inner barrier and an outer barrier includes a first collar configured for engagement with the inner or outer barriers, a collapsible coupling, and a sensor support connected to the collapsible coupling. The collapsible coupling or the sensor support is in sealing engagement with the first collar, and the first collar, collapsible coupling, and sensor support define a passage therethrough. A method for positioning a sensor includes engaging a first collar to at least one of the inner barrier or the outer barrier and inserting a sensor support connected to a collapsible coupling through the outer barrier. The method further includes connecting the sensor support or the collapsible coupling to the first collar and inserting the sensor through the sensor support.

System and method for positioning a sensor

Certain embodiments of the invention may include systems and methods for measuring turbine blade vibratory responses. According to an example embodiment of the invention, a method is provided for measuring a vibratory response of a plurality of turbine blades. The method can include mounting an optical probe comprising at least one probe tip optical surface, wherein the at least one probe tip optical surface is substantially parallel to within about +15 or about &#x2212;15 degrees with respect to a trailing edge surface of at least one of the plurality of turbine blades, directing light towards a trailing edge surface of at least one of the plurality of turbine blades, receiving reflected light from the at least one of the plurality of turbine blades, and determining relative position of the at least one of the plurality of blades based at least in part on the reflected light.

Systems and methods for measuring turbine blade vibratory response

A turbine includes a turbine wheel having a plurality of buckets, each of the buckets including a bucket airfoil, a bucket dovetail to connect the bucket to a turbine wheel and a shank shape to connect the airfoil to the bucket dovetail, the shank having an uncoated nominal profile including a concave, pressure side, substantially in accordance with Cartesian values of X, Y and Z' set forth in Table I wherein the Z&#x2032; values are non-dimensional values in a range from 0 to 1 convertible to Z distances in inches by multiplying the Z&#x2032; values by shank height in inches, and a convex, suction side, substantially in accordance with Cartesian values of X, Y and Z&#x2032; set forth in Table II wherein the Z&#x2032; values are non-dimensional values in a range from 0 to 1 convertible to Z distances in inches by multiplying the Z&#x2032; values by the shank height in inches. The X and Y are distances in inches which, when connected by smooth continuing arcs, define a shank profile section at each distance Z, the profile sections being joined smoothly with one another to form a complete shank shape.

Shank shape for a turbine blade and turbine incorporating the same

Growing community of inventors

Greenville, SC, United States of America

Holly Renae Davis