Doosan Enerbility Co., Ltd.

Alstom Technology Limited

Ansaldo Energia Switzerland Ag

Ansaldo Energia IP UK Limited

General Electric Technology Gmbh

Joerg Krueckels

Herbert Brandl

Ulrich Rathmann

Willy Heinz Hofmann

Carlos Simon-Delgado

Igor Tsypkaykin

Martin Schnieder

Brian Kenneth Wardle

Thomas Zierer

Marc Widmer

Paul Marlow

Stefan Emanuel Martin

Felix Michael Reinert

Sergey Shchukin

Vasileios Stefanis

Marc Henze

Wade Beaumont

Willy H Hoffmann

Roland Dueckershoff

Bruno Benedetti

Selma Zahirovic

Emanuele Facchinetti

Guillaume Wagner

David Johns

Seok Beom Kim

Said Jaamei

Milan Pathak

Stafan Emanuel Martin

Willy Hoffmann

A flow body for a gas turbine includes an airfoil extending along a radial direction between a platform end and a tip which has a tip surface. The airfoil is formed of a first metal material and comprises an inner cavity for receiving a gaseous cooling fluid. The flow body further includes a squealer tip protruding from the tip surface of the tip and extending along a circumference of the tip so that the squealer tip at least partially surrounds the tip surface. The squealer tip is formed from a second metal material and includes a plurality of internal cooling cavities that are separated from each other within the squealer tip, wherein each of the internal cooling cavities is in fluid communication with the inner cavity via one or more fluid passages.

Flow body for a gas turbine, gas turbine, method for manufacturing a flow body for a gas turbine, and method for repairing a flow body of a gas turbine

A method for manufacturing a blade for a gas turbine includes forming a blade body, forming a groove in an outer surface of the blade body, positioning a cover on the blade body such that it covers the groove and such that an outer surface of the cover forms a continuous surface with the outer surface of the blade body, and joining the cover to the blade body so that the cover and the groove define a cooling channel.

Method for manufacturing a blade for a gas turbine, turbine blade and gas turbine

A blade for turbo machine is provided. The blade for a turbo machine includes an airfoil body extending in a radial direction between a root end and a tip end and including an inner void extending from the root end in the radial direction, a root body integrally formed with the airfoil body, extending from the root end of the air foil body to a bottom end in the radial direction, and including a receiving slot extending from the bottom end in the radial direction and opening into the inner void of the air foil body, and an insert positioned in the receiving slot of the root body and including a plurality of through holes extending in the radial direction to form a fluid connection to the inner void of the air foil body.

Blade for a turbo machine, blade assembly, gas turbine, and method for manufacturing a blade for a turbo machine

The present technique presents a gas turbine blade for re-using cooling air, a turbomachine assembly having the blade, and a gas turbine having the turbomachine assembly. The blade includes a platform and an airfoil extending from the platform. The airfoil includes a pressure surface, a suction surface, a leading edge and a trailing edge. The platform includes a pressure side, a suction side, a leading-edge side and a trailing-edge side, disposed towards the pressure surface, the suction surface, the leading edge and the trailing edge of the airfoil, respectively. The suction side of the platform includes a part of the upper surface and a suction-side lateral surface of the platform. At least a part of an edge between the suction-side lateral surface and the upper surface of the platform comprises a chamfer part.

Gas turbine blade for re-using cooling air and turbomachine assembly and gas turbine comprising the same

A turbine blade is provided. The turbine blade may include an airfoil having an airfoil tip, a leading edge, a trailing edge, and a pressure side and a suction side extending from the leading edge to the trailing edge and defining an airfoil cavity, a squealer tip arranged at the airfoil tip part and comprising a trailing edge tip portion disposed at the trailing edge of the airfoil and a pressure side rail and a suction side rail meeting at the trailing edge tip portion and defining a squealer tip pocket at the airfoil tip, and at least one tip cooling hole disposed at the squealer tip pocket to provide cooling air from the airfoil cavity to the squealer tip pocket, wherein the trailing edge tip portion of the squealer tip includes a chamfer disposed towards the pressure side of the airfoil and a groove extending from the squealer tip pocket to the chamfer to provide cooling air from the squealer tip pocket to the chamfer.

Trailing edge tip cooling of blade of a gas turbine blade

A blade for a turbo machine is provided. The blade for a turbo machine includes an airfoil body extending in a radial direction and including a suction side surface and a pressure side surface opposite to the suction side surface with respect to a circumferential direction extending across the radial direction, and a snubber structure including a first snubber element protruding in the circumferential direction from the suction side surface of the airfoil body and a second snubber element protruding in the circumferential direction from the pressure side surface of the airfoil body, wherein the first snubber element is connected to the suction side surface of the airfoil body by a concave curved first transition portion having a first radius, and the second snubber element is connected to the pressure side surface of the airfoil body by a concave curved second transition portion having a second radius, the first radius being smaller than the second radius.

Blade for a turbo machine, blade assembly, and turbine

The present invention provides an airfoilwith the squealer tip cooling systemfor a turbine bladeat the blade tip, wherein the squealer tip cooling systemcomprises a cooling passagearranged within a squealer tip, wherein the cooling passageat least partly extends toward a terminal endof the squealer tip, and a pocketat a lateral surfaceof the squealer tip, open externally and extending inwardly at least partly across the cooling passage. The pocketintersects the cooling passageand the pocketcomprises an impingement surfacefacing the cooling passage, on which a cooling medium expelled through the cooling passageimpinges before being discharged externally through the pocket

Airfoil with a squealer tip cooling system for a turbine blade, a turbine blade, a turbine blade assembly, a gas turbine and a manufacturing method

The present technique presents a bladefor a gas turbine. The bladeincludes an airfoilhaving an airfoil tip partand a pressure sideand a suction sidemeeting at a leading edgeand a trailing edgeand defining an internal spaceof the airfoil. A squealer tipis arranged at the airfoil tip part. The squealer tipcomprises a suction side rail. The suction side railcomprises a chamfer partand at least one squealer tip cooling hole. The chamfer partcomprises a chamfer surface. An outletof the at least one squealer tip cooling holeis disposed at the chamfer surface

Technique for cooling squealer tip of a gas turbine blade

The present invention relates to a gas turbine implemented for example at the interface between the combustor and the vane platform. An efficiency of a cooling film associated to the vane platform can be increased, hence reducing the quantity of the air needed.

Gas turbine

The invention refers to a rotor blade or guide vane airfoil for a gas turbine engine having a longitudinal axis and a source of cooling fluid. The airfoil has a pressure wall, a suction wall, a leading edge, a trailing edge and at least one cooling fluid flow passage. The cooling fluid flow passage is in fluid communication with the source of cooling fluid. Means for directing cooling fluid at least to the trailing edge are provided, whereas the cooling fluid flow passage including: a plurality of axially extending walls, each of the walls extending laterally between the pressure wall and suction wall. The plurality of walls are radially spaced within the cooling fluid flow passage such that adjacent pairs of walls define a channel. The axial spacing between the adjacent walls include in radial direction of the airfoil a pins and a ribs structure, wherein the pins holistic or approximately cover the axial height of the channel. The ribs have a deeper level with respect to the pins and the ribs establish a bridge-like connection between each of adjacent ribs.

Rotor blade and guide vane airfoil for a gas turbine engine

The disclosure pertains to a vane comprising a platform and airfoil extending form said platform and connected to the platform by a fillet. An impingement tube is inserted into said airfoil delimiting a cooling channel between the impingement tube and the side walls. The vane further comprises a baffle structure positioned adjacent the fillet and which follows the inside contour of the fillet; delimiting a first cooling passage between the fillet and the baffle structure. A first obstruction is arranged on the inside of the airfoil at the connection of the fillet to the side walls for separating the first cooling passage from the cooling channel in the airfoil and to guide the cooling gas from the first cooling passage into the impingement tube. The disclosure further refers to a method for cooling such a vane.

Turbine vane with cooled fillet

An internally cooled airfoil for a rotary machine, for example, a gas turbine engine includes a suction and pressure side wall each extending in an axial direction, i.e. from a leading to a trailing edge of the airfoil. A suction wall sided cooling channel and a pressure wall sided cooling channel extend in the axial direction. A feed chamber is defined between a first and second inner wall for feeding the suction wall and pressure wall sided cooling channel each by at least one through hole inside of the first and second inner wall. The suction wall sided cooling channel and the pressure wall sided cooling channel extend into the trailing edge region separately. The suction wall sided cooling channel and the pressure wall sided cooling channel join before discharging at the trailing edge.

Internally cooled airfoil for a rotary machine

The invention relates to a component for a thermal machine, in particular a gas turbine, which includes a corner and/or edge subjected to a thermally high load. The cooling of the component is improved in a manner such that at least one cooling channel is countersunk into the surface of the component in the immediate vicinity of the corner and/or edge in order to cool the corner and/or edge.

Component for a thermal machine, in particular a gas turbine

A cooled constructional element for a gas turbine includes a wall having a front and a rear side. The front side is configured to be thermally loaded during operation of the turbine, and the rear side has a plurality of pins projecting therefrom in a two-dimensional distribution, the two-dimensional distribution including a higher density distribution of pins in a critical zone of the cooled constructional element than in the remaining regions of the cooled constructional element. A device is configured to create jets of a cooling medium that are directed onto the rear side of the wall in a region of the plurality of pins so as to cool the rear side of the wall by impingement.

Cooled constructional element for a gas turbine

A blade for a gas turbine includes a leading edge running in a longitudinal direction substantially radially to an axis of the turbine; a trailing edge running in the longitudinal direction; a blade body disposed between the leading edge and the trailing edge so as to define a pressure side and a suction side; an exit slot disposed in the blade body in an area of the trailing edge and running in the longitudinal direction and configured to discharge a cooling medium from an interior of the blade body; and a row of first and second control elements disposed in the exit slot in a distributed manner in the longitudinal direction and configured to control a mass flow of the cooling medium exiting through the exit slot, the first control elements having a first configuration and the second control elements having a second configuration different from the first configuration.

Growing community of inventors

Birmenstorf, Switzerland

Joerg Krueckels