US20150198050A1 - Internal cooling system with corrugated insert forming nearwall cooling channels for airfoil usable in a gas turbine engine - Google Patents
Internal cooling system with corrugated insert forming nearwall cooling channels for airfoil usable in a gas turbine engine Download PDFInfo
- Publication number
- US20150198050A1 US20150198050A1 US14/155,422 US201414155422A US2015198050A1 US 20150198050 A1 US20150198050 A1 US 20150198050A1 US 201414155422 A US201414155422 A US 201414155422A US 2015198050 A1 US2015198050 A1 US 2015198050A1
- Authority
- US
- United States
- Prior art keywords
- wall
- trailing edge
- cooling channel
- subpartition
- partition walls
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
- F01D5/188—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall
- F01D5/189—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall the insert having a tubular cross-section, e.g. airfoil shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
- F01D5/188—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/186—Film cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
- F05D2240/127—Vortex generators, turbulators, or the like, for mixing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/60—Structure; Surface texture
- F05D2250/61—Structure; Surface texture corrugated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/201—Heat transfer, e.g. cooling by impingement of a fluid
Definitions
- This invention is directed generally to gas turbine engines, and more particularly to internal cooling systems for airfoils in gas turbine engines
- gas turbine engines typically include a compressor for compressing air, a combustor for mixing the compressed air with fuel and igniting the mixture, and a turbine blade assembly for producing power.
- Combustors often operate at high temperatures that may exceed 2,500 degrees Fahrenheit
- Typical turbine combustor configurations expose turbine vane and blade assemblies to high temperatures
- Turbine engines typically include a plurality of rows of stationary turbine vanes extending radially inward from a shell and include a plurality of rows of rotatable turbine blades attached to a rotor assembly for turning the rotor
- the turbine vanes are exposed to high temperature combustor gases that heat the airfoil.
- the airfoils include internal cooling systems for reducing the temperature of the airfoils. While there exist many configurations of cooling systems, there exists a need for improved cooling of gas turbine airfoils.
- An airfoil for a gas turbine engine in which the airfoil includes an internal cooling system formed from one or more midchord cooling channels with a corrugated insert positioned therein and creating nearwall leading edge, pressure side and suction side nearwall cooling channels is disclosed.
- the corrugated insert may be formed from a wall that oscillates in a repeating pattern between peaks and valleys, such that the peaks are closer to an inner surface of an outer wall forming a generally elongated hollow airfoil of the airfoil.
- the corrugated insert may work in concert with the rows of partition walls to create periodic impingement on the inner surface of the outer wall, specifically the surfaces leading from the valleys to the peaks moving toward a trailing edge of the generally elongated hollow airfoil direct the fluids toward the outer wall.
- Such cooling system may provide adequate cooling for use in environments in which few, if any, cooling holes are desired, such as in crude oil engine applications
- the turbine airfoil may be formed from a generally elongated hollow airfoil formed from an outer wall, and having a leading edge, a trailing edge, a pressure side, a suction side, and a cooling system positioned within interior aspects of the generally elongated hollow airfoil
- the cooling system may include one or more midchord cooling channels with one or more corrugated inserts positioned therein and creating a leading edge nearwall cooling channel between the leading edge and the corrugated insert, a suction side nearwall cooling channel between the suction side and the corrugated insert and a pressure side nearwall cooling channel between the pressure side and the corrugated insert.
- the corrugated insert may be formed from a wall that oscillates in a repeating pattern between peaks and valleys, such that the peaks are closer to an inner surface of the outer wall forming the generally elongated hollow airfoil.
- a plurality of rows of partition walls may extend from the inner surface forming the outer wall and into the midchord cooling channel.
- the partition walls may include gaps therein, and the rows of partition walls may be generally aligned with a direction of cooling fluid flow from the leading edge chordwise toward the trailing edge. At least a portion of the peaks in the corrugated insert extending radially outward may be aligned with the gaps within at least a portion of at least one partition wall.
- one or more partition walls may include gaps therein that extend for a portion of or in a repeating pattern for an entire length of the at least one partition wall
- one or more partition walls may be linear
- each of the partition walls may be linear and each of the partition walls may be parallel with each other.
- one or more partition walls may be formed from first and second subpartition walls, whereby the second subpartition wall may be offset laterally from first subpartition wall, and the first and second subpartition walls may be staggered in an alternating manner moving downstream in a direction from the leading edge toward the trailing edge.
- each partition wall may be formed from a first and second subpartition walls, whereby the second subpartition wall may be offset laterally from first subpartition wall, and the first and second subpartition walls may be staggered in an alternating manner moving in a direction from the leading edge toward the trailing edge.
- a second subpartition wall may be positioned along an axis that is equidistant from a first subpartition wall within a same partition wall as the second subpartition wall and from a first subpartition wall within an adjacent partition wall
- the turbine airfoil may also include a plurality of miniribs extending from the inner surface forming the outer wall and extending between adjacent partition walls.
- the miniribs may be nonparallel with the partition walls and may be shorter in height extending from the inner surface than adjacent partition ribs.
- the plurality of miniribs may be aligned with each other and may be orthogonal to the adjacent partition walls
- the cooling system may also include one or more trailing edge cooling channels positioned between the midchord cooling channel and the trailing edge of the generally elongated hollow airfoil.
- the trailing edge cooling channel may include a plurality of pin fins extending from the outer wall forming the pressure side to the suction side and forming zigzag cooling flow channels within the trailing edge cooling channel At least a portion of the pin fins may have cross-sectional areas with a leading edge and a trailing edge that is positioned on a downstream corner and separated from the leading edge by a concave side surface and a convex side surface.
- At least one of the zigzag cooling flow channels may be formed from a plurality of pin fins aligned such that the concave and convex side surfaces alternate moving towards the trailing edge.
- a first upstream pin fin may have a cross-sectional area formed from an upstream section and a downstream section.
- the upstream section may be generally linear with a constant width
- the downstream section may be generally linear with a tapered width that reduces in width moving towards the trailing edge.
- the upstream and downstream sections may be nonlinear and nonorthogonal with each other.
- cooling fluids are supplied from a compressor or other such source to the inner aspect of the corrugated insert of the internal cooling system Cooling fluids are passed through the inlets into the leading edge nearwall cooling channel where the fluids separate with a portion flowing into the pressure side nearwall cooling channel and a portion flowing into the suction side nearwall cooling channel.
- the peaks and valleys of the corrugated insert create periodic impingement on the inner surface of the outer wall
- the partition walls also direct the cooling fluids towards the trailing edge, and in at least come embodiments, create a nonlinear flow path toward the trailing edge to increase convection of heat from the outer wall to the cooling fluid
- the cooling fluid may be exhausted through film cooling holes at downstream ends of the pressure and suction side nearwall cooling channels.
- Cooling fluids may also be passed to the trailing edge cooling channel via one or more trailing edge supply channels
- the cooling fluids may be metered through metering holes into the trailing edge cooling channel.
- the cooling fluids may flow into the zigzag cooling flow channels where the pin fins direct the cooling fluids in a nonlinear motion to the trailing edge, where the cooling fluids are exhausted.
- the cooling fluids in the trailing edge cooling channel receive heat from the outer wall forming the pressure and suction sides and from the pin fins.
- FIG. 1 is a perspective view of a turbine vane with aspects of this invention
- FIG. 2 is a cross-sectional view of the turbine vane taken at section line 2 - 2 in FIG. 1 .
- FIG. 3 is a detailed view of the pressure side nearwall cooling channel.
- FIG. 4 is a detailed view of the trailing edge cooling channel of the cooling system shown in FIG. 2 .
- FIG. 5 is a detailed view of the midchord cooling channel of the cooling system shown in FIG. 2
- FIG. 6 is a side view of a three dimensional model of the cooling system within the turbine vane in FIG. 1 .
- FIG. 7 is a perspective view of the three dimensional model of the cooling system shown in FIG. 6 .
- FIG. 8 is schematic, cross-sectional diagram of a portion of the cooling system of FIG. 2 .
- FIG. 9 is a detail view of a portion of the cooling system taken at the detail line in FIG. 8 .
- FIG. 10 is a perspective view of a portion of the cooling system of FIG. 2 .
- FIG. 11 is a detail view of a portion of the cooling system taken at detail line 11 - 11 in FIG. 10 .
- FIG. 12 is a cross-sectional view of an alternative embodiment of the turbine vane taken at section line 2 - 2 in FIG. 1
- FIG. 13 is a detailed view of an alternative embodiment of the pressure side nearwall cooling channel.
- FIG. 14 is a detailed view of an alternative embodiment of the trailing edge cooling channel of the cooling system shown in FIG. 2 .
- FIG. 15 is a detailed view of an alternative embodiment of the midchord cooling channel of the cooling system shown in FIG. 2 .
- FIG. 16 is a perspective view of a turbine blade with aspects of this invention.
- an airfoil 10 for a gas turbine engine in which the airfoil 10 includes an internal cooling system 14 formed from one or more midchord cooling channels 16 with a corrugated insert 18 positioned therein and creating nearwall leading edge, pressure side and suction side nearwall cooling channels 20 , 22 , 24 is disclosed
- the corrugated insert 18 may be formed from a wall 26 that oscillates in a repeating pattern between peaks 28 and valleys 30 , such that the peaks 28 are closer to an inner surface 50 of an outer wall 32 forming a generally elongated hollow airfoil 34 of the airfoil 10
- the corrugated insert 18 may work in concert with the rows 36 of partition walls 38 to create periodic impingement on the inner surface 50 of the outer wall 32 , specifically the surfaces 40 leading from the valleys 30 to the peaks 28 moving toward a trailing edge 42 of the generally elongated hollow airfoil 34 direct the fluids toward the outer wall 32
- Such cooling system 14 may provide adequate cooling for use in environments in which few
- the turbine airfoil 10 may be formed from a generally elongated hollow airfoil 34 formed from an outer wall 32 , and having a leading edge 44 , a trailing edge 42 , a pressure side 46 , a suction side 48 , and the internal cooling system 14 positioned within interior aspects of the generally elongated hollow airfoil 34
- the turbine airfoil 10 may be a stationary vane, as shown in FIG. 1 , such as a turbine vane, with inner and outer endwalls.
- the turbine airfoil 10 may be a rotary blade, as shown in FIG. 16 , such as a turbine blade As shown in FIGS.
- the turbine airfoil 10 may include one or more midchord cooling channels 16 with one or more corrugated inserts 18 positioned therein and creating a leading edge nearwall cooling channel 20 between the leading edge 44 and the corrugated insert 18 , a suction side nearwall cooling channel 24 between the suction side 48 and the corrugated insert 18 and a pressure side nearwall cooling channel 22 between the pressure side 46 and the corrugated insert 18 .
- the corrugated insert 18 may be formed from a wall 26 that oscillates in a repeating pattern between peaks 28 and valleys 30 , such that the peaks 28 are closer to an inner surface 50 of the outer wall 32 forming the generally elongated hollow airfoil 34 .
- the peaks 28 and valleys 30 may be generally curved. Portions of the corrugated insert 18 extending between the peaks 28 and valleys 30 may be generally linear.
- the turbine airfoil 10 may also include a plurality of rows 36 of partition walls 38 extending from the inner surface 50 forming the outer wall 32 and into the midchord cooling channel 16 On or more partition walls 38 may include gaps 52 therein. The gaps 52 maybe shorter in length than the individual sections of the partition walls 38 .
- the rows 36 of partition walls 38 may be generally aligned with a direction 54 of cooling fluid flow from the leading edge 44 chordwise toward the trailing edge 42 .
- the partition walls 38 may be orthogonal with the leading edge 44 In at least one embodiment, the partition walls 38 may be orthogonal with the leading edge 44 or the trailing edge 42 , or both At least a portion of the peaks 28 in the corrugated insert 18 extending radially outward may be aligned with the gaps 52 within at least a portion of at least one partition wall 38 Such alignment of the gaps 52 with the peaks 28 creates periodic impingement upon the impingement surfaces 40 and partial lateral, spanwise movement and mixing of the cooling fluids In particular, the corrugated insert 18 functions in concert with the rows 36 of partition walls 38 to create periodic impingement on the corrugated insert 18 , specifically on those surfaces 40 leading from the valleys 30 to the peaks 28 moving toward the trailing edge 42 .
- the plurality of rows 36 of partition walls 38 may extend from the inner surface 50 into the pressure side nearwall cooling channel 22 Similarly, the plurality of rows 36 of partition walls 38 may extend from the inner surface 50 into the suction side nearwall cooling channel 24 The rows of partition walls 38 may extend in a direction from the leading edge 44 chordwise toward the trailing edge 42 . As shown in FIGS. 2 and 12 , the leading edge nearwall cooling channel 20 may not include partition walls 38 or other components.
- leading edge nearwall cooling channel 20 may include partition walls 38 or other impingement components
- One or more inlets 56 may be positioned in the corrugated insert 18 at the leading edge nearwall cooling channel 20 to pass cooling fluid from interior aspects of the corrugated insert 18 to the leading edge nearwall cooling channel 20
- the inlets 56 may function as an impingement holes as the compressed air flows from inner aspects of the corrugated insert 18 through the inlets 56 and impinges on a backside, inner surface of the outer wall 32 forming the leading edge 44
- the partition wall gaps 52 may extend for a partial length or an entire length of the partition wall 38 .
- One or more of the partition walls 38 may be linear.
- each of the partition walls 38 may be linear and each of the partition walls 38 may be parallel with each other.
- the partition walls 38 may have a cross-sectional area with one or more of the following shapes: square, rectangular and trapezoidal, or other appropriate shape.
- one or more partition walls 38 may be formed from first and second subpartition walls 58 , 60 .
- the second subpartition wall 60 may be offset laterally from first subpartition wall 58 , and the first and second subpartition walls 58 , 60 may be staggered in an alternating manner moving in a direction from the leading edge 44 toward the trailing edge 42 .
- each partition wall 38 may be formed from the first and second subpartition walls 58 , 60 with the same configuration set forth immediately above Adjacent partition walls 38 may be spaced from each other equidistant, randomly, in a pattern or in another manner.
- a second subpartition wall 60 may be positioned along an axis 62 that is equidistant from the first subpartition wall 58 within a same partition wall 64 as the second subpartition wall 60 and a first subpartition wall 58 within an adjacent partition wall 66 .
- the cooling system 14 may also include one or more miniribs 68 , as shown in FIGS. 3 , 5 , 9 - 11 , 13 and 15 , extending from the inner surface 50 forming the outer wall 32 and extending between adjacent partition walls 38 .
- the miniribs 68 may be nonparallel with the partition walls 38 and may be shorter in height extending from the inner surface 50 than adjacent partition ribs 38
- the miniribs 68 may have a cross-sectional area with one or more of the following shapes: square, rectangular, and trapezoidal, or other appropriate shape.
- a cross-sectional area of a minirib 68 may be less than a cross-sectional area of the partition wall 38 .
- the cross-sectional area of a minirib 68 may be less than one quarter of the cross-sectional area of the partition wall 38 . In yet another embodiment, the cross-sectional area of a minirib 68 may be less than one eight of the cross-sectional area of the partition wall 38
- the plurality of miniribs 68 may be aligned with each other and may be orthogonal to the adjacent partition walls 38 The miniribs 68 may extend from a partition wall 38 to an adjacent partition wall 38 . In another embodiment, neither end of the miniribs 68 contacts the partition walls 38 , as shown in FIGS.
- a plurality of miniribs 68 may extend between each adjacent partition walls 38 between gaps 52 In at least one embodiment, at least four miniribs 68 extend between adjacent partition walls 38 between gaps 52 . In addition, there may exist one or more miniribs 68 positioned within a gap 52 between two portions of a partition wall 38 within a single partition wall 38
- the cooling system 14 may also include one or more trailing edge cooling channels 70 , as shown in FIGS. 4 and 14 , positioned between the midchord cooling channel 16 and the trailing edge 42 of the generally elongated hollow airfoil 34 .
- the trailing edge cooling channel 70 may include a plurality of pin fins 72 extending from the outer wall 32 forming the pressure side 46 to the suction side 48 and forming zigzag cooling flow channels 74 within the trailing edge cooling channel 70 At least a portion of the pin fins 72 may have cross-sectional areas with a leading edge 76 and a trailing edge 78 that is positioned on a downstream corner 80 and separated from the leading edge 76 by a concave side surface 82 and a convex side surface 84 on an opposite side of the pin fin 72 from the concave side 82 .
- One or more of the zigzag cooling flow channels 74 may be formed from a plurality of pin fins 72 aligned such that the concave and convex side surfaces 82 , 84 alternate moving towards the trailing edge 42
- a first upstream pin fin 86 may have a cross-sectional area formed from an upstream section 88 and a downstream section 90 .
- the upstream section 88 may be generally linear with a constant width
- the downstream section 90 may be generally linear with a tapered width that reduces in width moving towards the trailing edge 42
- the upstream and downstream sections 88 , 90 may be nonlinear and nonorthogonal with each other.
- cooling fluids may be supplied from a compressor or other such source to the inner aspect of the corrugated insert 18 of the internal cooling system 14 .
- Cooling fluids are passed through the inlets 56 into the leading edge nearwall cooling channel 20 where the fluids separate with a portion flowing into the pressure side nearwall cooling channel 22 and a portion flowing into the suction side nearwall cooling channel 24 .
- the peaks 28 and valleys 30 of the corrugated insert 18 create periodic impingement on the inner surface 50 of the outer wall 32 .
- the partition walls 38 also direct the cooling fluids towards the trailing edge 42 , and in at least some embodiments, create a nonlinear flow path toward the trailing edge to increase convection of heat from the outer wall to the cooling fluid.
- the cooling fluid may be exhausted through film cooling holes 92 at downstream ends of the pressure and suction side nearwall cooling channels 22 , 24 .
- Cooling fluids may also be passed to the trailing edge cooling channel 70 via one or more trailing edge supply channels 94 .
- the cooling fluids may be metered through metering holes 96 into the trailing edge cooling channel 70 .
- the cooling fluids may flow into the zigzag cooling flow channels 74 where the pin fins 72 direct the cooling fluids in a nonlinear, back and forth motion to the trailing edge 42 , where the cooling fluids are exhausted.
- the cooling fluids in the trailing edge cooling channel 70 receive heat from the outer wall 32 forming the pressure and suction sides 46 , 48 and from the pin fins 72
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
- This invention is directed generally to gas turbine engines, and more particularly to internal cooling systems for airfoils in gas turbine engines
- Typically, gas turbine engines include a compressor for compressing air, a combustor for mixing the compressed air with fuel and igniting the mixture, and a turbine blade assembly for producing power. Combustors often operate at high temperatures that may exceed 2,500 degrees Fahrenheit Typical turbine combustor configurations expose turbine vane and blade assemblies to high temperatures As a result, turbine vanes and blades must be made of materials capable of withstanding such high temperatures, or must include cooling features to enable the component to survive in an environment which exceeds the capability of the material Turbine engines typically include a plurality of rows of stationary turbine vanes extending radially inward from a shell and include a plurality of rows of rotatable turbine blades attached to a rotor assembly for turning the rotor
- Typically, the turbine vanes are exposed to high temperature combustor gases that heat the airfoil. The airfoils include internal cooling systems for reducing the temperature of the airfoils. While there exist many configurations of cooling systems, there exists a need for improved cooling of gas turbine airfoils.
- An airfoil for a gas turbine engine in which the airfoil includes an internal cooling system formed from one or more midchord cooling channels with a corrugated insert positioned therein and creating nearwall leading edge, pressure side and suction side nearwall cooling channels is disclosed. The corrugated insert may be formed from a wall that oscillates in a repeating pattern between peaks and valleys, such that the peaks are closer to an inner surface of an outer wall forming a generally elongated hollow airfoil of the airfoil. The corrugated insert may work in concert with the rows of partition walls to create periodic impingement on the inner surface of the outer wall, specifically the surfaces leading from the valleys to the peaks moving toward a trailing edge of the generally elongated hollow airfoil direct the fluids toward the outer wall. Such cooling system may provide adequate cooling for use in environments in which few, if any, cooling holes are desired, such as in crude oil engine applications
- The turbine airfoil may be formed from a generally elongated hollow airfoil formed from an outer wall, and having a leading edge, a trailing edge, a pressure side, a suction side, and a cooling system positioned within interior aspects of the generally elongated hollow airfoil The cooling system may include one or more midchord cooling channels with one or more corrugated inserts positioned therein and creating a leading edge nearwall cooling channel between the leading edge and the corrugated insert, a suction side nearwall cooling channel between the suction side and the corrugated insert and a pressure side nearwall cooling channel between the pressure side and the corrugated insert. The corrugated insert may be formed from a wall that oscillates in a repeating pattern between peaks and valleys, such that the peaks are closer to an inner surface of the outer wall forming the generally elongated hollow airfoil. A plurality of rows of partition walls may extend from the inner surface forming the outer wall and into the midchord cooling channel. The partition walls may include gaps therein, and the rows of partition walls may be generally aligned with a direction of cooling fluid flow from the leading edge chordwise toward the trailing edge. At least a portion of the peaks in the corrugated insert extending radially outward may be aligned with the gaps within at least a portion of at least one partition wall.
- In at least one embodiment, one or more partition walls may include gaps therein that extend for a portion of or in a repeating pattern for an entire length of the at least one partition wall In one embodiment, one or more partition walls may be linear In another embodiment, each of the partition walls may be linear and each of the partition walls may be parallel with each other. In yet another embodiment, one or more partition walls may be formed from first and second subpartition walls, whereby the second subpartition wall may be offset laterally from first subpartition wall, and the first and second subpartition walls may be staggered in an alternating manner moving downstream in a direction from the leading edge toward the trailing edge. In another embodiment, each partition wall may be formed from a first and second subpartition walls, whereby the second subpartition wall may be offset laterally from first subpartition wall, and the first and second subpartition walls may be staggered in an alternating manner moving in a direction from the leading edge toward the trailing edge. A second subpartition wall may be positioned along an axis that is equidistant from a first subpartition wall within a same partition wall as the second subpartition wall and from a first subpartition wall within an adjacent partition wall
- The turbine airfoil may also include a plurality of miniribs extending from the inner surface forming the outer wall and extending between adjacent partition walls. The miniribs may be nonparallel with the partition walls and may be shorter in height extending from the inner surface than adjacent partition ribs. In at least one embodiment, the plurality of miniribs may be aligned with each other and may be orthogonal to the adjacent partition walls
- The cooling system may also include one or more trailing edge cooling channels positioned between the midchord cooling channel and the trailing edge of the generally elongated hollow airfoil. The trailing edge cooling channel may include a plurality of pin fins extending from the outer wall forming the pressure side to the suction side and forming zigzag cooling flow channels within the trailing edge cooling channel At least a portion of the pin fins may have cross-sectional areas with a leading edge and a trailing edge that is positioned on a downstream corner and separated from the leading edge by a concave side surface and a convex side surface. At least one of the zigzag cooling flow channels may be formed from a plurality of pin fins aligned such that the concave and convex side surfaces alternate moving towards the trailing edge. In at least one embodiment, a first upstream pin fin may have a cross-sectional area formed from an upstream section and a downstream section. The upstream section may be generally linear with a constant width, and the downstream section may be generally linear with a tapered width that reduces in width moving towards the trailing edge. The upstream and downstream sections may be nonlinear and nonorthogonal with each other.
- During use, cooling fluids are supplied from a compressor or other such source to the inner aspect of the corrugated insert of the internal cooling system Cooling fluids are passed through the inlets into the leading edge nearwall cooling channel where the fluids separate with a portion flowing into the pressure side nearwall cooling channel and a portion flowing into the suction side nearwall cooling channel. The peaks and valleys of the corrugated insert create periodic impingement on the inner surface of the outer wall The partition walls also direct the cooling fluids towards the trailing edge, and in at least come embodiments, create a nonlinear flow path toward the trailing edge to increase convection of heat from the outer wall to the cooling fluid The cooling fluid may be exhausted through film cooling holes at downstream ends of the pressure and suction side nearwall cooling channels.
- Cooling fluids may also be passed to the trailing edge cooling channel via one or more trailing edge supply channels The cooling fluids may be metered through metering holes into the trailing edge cooling channel. The cooling fluids may flow into the zigzag cooling flow channels where the pin fins direct the cooling fluids in a nonlinear motion to the trailing edge, where the cooling fluids are exhausted. The cooling fluids in the trailing edge cooling channel receive heat from the outer wall forming the pressure and suction sides and from the pin fins.
- An advantage of the internal cooling system is that the corrugated insert creates periodic impingement and sufficient cooling fluid mixing to cool the airfoil
- These and other embodiments are described in more detail below
- The accompanying drawings, which are incorporated in and form a part of the specification, illustrate embodiments of the presently disclosed invention and, together with the description, disclose the principles of the invention
-
FIG. 1 is a perspective view of a turbine vane with aspects of this invention -
FIG. 2 is a cross-sectional view of the turbine vane taken at section line 2-2 inFIG. 1 . -
FIG. 3 is a detailed view of the pressure side nearwall cooling channel. -
FIG. 4 is a detailed view of the trailing edge cooling channel of the cooling system shown inFIG. 2 . -
FIG. 5 is a detailed view of the midchord cooling channel of the cooling system shown inFIG. 2 -
FIG. 6 is a side view of a three dimensional model of the cooling system within the turbine vane inFIG. 1 . -
FIG. 7 is a perspective view of the three dimensional model of the cooling system shown inFIG. 6 . -
FIG. 8 is schematic, cross-sectional diagram of a portion of the cooling system ofFIG. 2 . -
FIG. 9 is a detail view of a portion of the cooling system taken at the detail line inFIG. 8 . -
FIG. 10 is a perspective view of a portion of the cooling system ofFIG. 2 . -
FIG. 11 is a detail view of a portion of the cooling system taken at detail line 11-11 inFIG. 10 . -
FIG. 12 is a cross-sectional view of an alternative embodiment of the turbine vane taken at section line 2-2 inFIG. 1 -
FIG. 13 is a detailed view of an alternative embodiment of the pressure side nearwall cooling channel. -
FIG. 14 is a detailed view of an alternative embodiment of the trailing edge cooling channel of the cooling system shown inFIG. 2 . -
FIG. 15 is a detailed view of an alternative embodiment of the midchord cooling channel of the cooling system shown inFIG. 2 . -
FIG. 16 is a perspective view of a turbine blade with aspects of this invention. - As shown in
FIGS. 1-16 , anairfoil 10 for a gas turbine engine in which theairfoil 10 includes aninternal cooling system 14 formed from one or moremidchord cooling channels 16 with acorrugated insert 18 positioned therein and creating nearwall leading edge, pressure side and suction sidenearwall cooling channels corrugated insert 18 may be formed from awall 26 that oscillates in a repeating pattern betweenpeaks 28 andvalleys 30, such that thepeaks 28 are closer to aninner surface 50 of anouter wall 32 forming a generally elongatedhollow airfoil 34 of theairfoil 10 Thecorrugated insert 18 may work in concert with therows 36 ofpartition walls 38 to create periodic impingement on theinner surface 50 of theouter wall 32, specifically thesurfaces 40 leading from thevalleys 30 to thepeaks 28 moving toward atrailing edge 42 of the generally elongatedhollow airfoil 34 direct the fluids toward theouter wall 32Such cooling system 14 may provide adequate cooling for use in environments in which few, if any, cooling holes are desired, such as in crude oil engine applications. - In at least one embodiment, the
turbine airfoil 10 may be formed from a generally elongatedhollow airfoil 34 formed from anouter wall 32, and having a leadingedge 44, atrailing edge 42, apressure side 46, asuction side 48, and theinternal cooling system 14 positioned within interior aspects of the generally elongatedhollow airfoil 34 In one embodiment, theturbine airfoil 10 may be a stationary vane, as shown inFIG. 1 , such as a turbine vane, with inner and outer endwalls. In another embodiment, theturbine airfoil 10 may be a rotary blade, as shown inFIG. 16 , such as a turbine blade As shown inFIGS. 2 , 6, 7 and 12, theturbine airfoil 10 may include one or moremidchord cooling channels 16 with one or morecorrugated inserts 18 positioned therein and creating a leading edgenearwall cooling channel 20 between the leadingedge 44 and thecorrugated insert 18, a suction sidenearwall cooling channel 24 between thesuction side 48 and thecorrugated insert 18 and a pressure sidenearwall cooling channel 22 between thepressure side 46 and thecorrugated insert 18. Thecorrugated insert 18 may be formed from awall 26 that oscillates in a repeating pattern betweenpeaks 28 andvalleys 30, such that thepeaks 28 are closer to aninner surface 50 of theouter wall 32 forming the generally elongatedhollow airfoil 34. In at feast one embodiment, thepeaks 28 andvalleys 30 may be generally curved. Portions of thecorrugated insert 18 extending between thepeaks 28 andvalleys 30 may be generally linear. - The
turbine airfoil 10 may also include a plurality ofrows 36 ofpartition walls 38 extending from theinner surface 50 forming theouter wall 32 and into themidchord cooling channel 16 On ormore partition walls 38 may includegaps 52 therein. Thegaps 52 maybe shorter in length than the individual sections of thepartition walls 38. Therows 36 ofpartition walls 38 may be generally aligned with adirection 54 of cooling fluid flow from the leadingedge 44 chordwise toward the trailingedge 42. In at least one embodiment, thepartition walls 38 may be orthogonal with the leadingedge 44 In at least one embodiment, thepartition walls 38 may be orthogonal with the leadingedge 44 or the trailingedge 42, or both At least a portion of thepeaks 28 in thecorrugated insert 18 extending radially outward may be aligned with thegaps 52 within at least a portion of at least onepartition wall 38 Such alignment of thegaps 52 with thepeaks 28 creates periodic impingement upon the impingement surfaces 40 and partial lateral, spanwise movement and mixing of the cooling fluids In particular, thecorrugated insert 18 functions in concert with therows 36 ofpartition walls 38 to create periodic impingement on thecorrugated insert 18, specifically on thosesurfaces 40 leading from thevalleys 30 to thepeaks 28 moving toward the trailingedge 42. - As shown in
FIGS. 2 , 5 and 9-11, the plurality ofrows 36 ofpartition walls 38 may extend from theinner surface 50 into the pressure side nearwall coolingchannel 22 Similarly, the plurality ofrows 36 ofpartition walls 38 may extend from theinner surface 50 into the suction side nearwall coolingchannel 24 The rows ofpartition walls 38 may extend in a direction from the leadingedge 44 chordwise toward the trailingedge 42. As shown inFIGS. 2 and 12 , the leading edgenearwall cooling channel 20 may not includepartition walls 38 or other components. In another embodiment, the leading edgenearwall cooling channel 20 may includepartition walls 38 or other impingement components One ormore inlets 56 may be positioned in thecorrugated insert 18 at the leading edgenearwall cooling channel 20 to pass cooling fluid from interior aspects of thecorrugated insert 18 to the leading edgenearwall cooling channel 20 Theinlets 56 may function as an impingement holes as the compressed air flows from inner aspects of thecorrugated insert 18 through theinlets 56 and impinges on a backside, inner surface of theouter wall 32 forming theleading edge 44 - In at least one embodiment, as shown in
FIGS. 5-10 and 15, thepartition wall gaps 52 may extend for a partial length or an entire length of thepartition wall 38. One or more of thepartition walls 38 may be linear. In at least one embodiment, each of thepartition walls 38 may be linear and each of thepartition walls 38 may be parallel with each other. Thepartition walls 38 may have a cross-sectional area with one or more of the following shapes: square, rectangular and trapezoidal, or other appropriate shape. - In another embodiment, as shown in
FIG. 15 , one ormore partition walls 38 may be formed from first andsecond subpartition walls second subpartition wall 60 may be offset laterally fromfirst subpartition wall 58, and the first andsecond subpartition walls edge 44 toward the trailingedge 42. In another embodiment, eachpartition wall 38 may be formed from the first andsecond subpartition walls Adjacent partition walls 38 may be spaced from each other equidistant, randomly, in a pattern or in another manner. In at least one embodiment, asecond subpartition wall 60 may be positioned along anaxis 62 that is equidistant from thefirst subpartition wall 58 within asame partition wall 64 as thesecond subpartition wall 60 and afirst subpartition wall 58 within anadjacent partition wall 66. - The
cooling system 14 may also include one or more miniribs 68, as shown inFIGS. 3 , 5, 9-11, 13 and 15, extending from theinner surface 50 forming theouter wall 32 and extending betweenadjacent partition walls 38. Theminiribs 68 may be nonparallel with thepartition walls 38 and may be shorter in height extending from theinner surface 50 thanadjacent partition ribs 38 Theminiribs 68 may have a cross-sectional area with one or more of the following shapes: square, rectangular, and trapezoidal, or other appropriate shape. A cross-sectional area of aminirib 68 may be less than a cross-sectional area of thepartition wall 38. In at least one embodiment, the cross-sectional area of aminirib 68 may be less than one quarter of the cross-sectional area of thepartition wall 38. In yet another embodiment, the cross-sectional area of aminirib 68 may be less than one eight of the cross-sectional area of thepartition wall 38 The plurality ofminiribs 68 may be aligned with each other and may be orthogonal to theadjacent partition walls 38 Theminiribs 68 may extend from apartition wall 38 to anadjacent partition wall 38. In another embodiment, neither end of the miniribs 68 contacts thepartition walls 38, as shown inFIGS. 5 and 15 In at least one embodiment, a plurality ofminiribs 68 may extend between eachadjacent partition walls 38 betweengaps 52 In at least one embodiment, at least fourminiribs 68 extend betweenadjacent partition walls 38 betweengaps 52. In addition, there may exist one or more miniribs 68 positioned within agap 52 between two portions of apartition wall 38 within asingle partition wall 38 - The
cooling system 14 may also include one or more trailingedge cooling channels 70, as shown inFIGS. 4 and 14 , positioned between themidchord cooling channel 16 and the trailingedge 42 of the generally elongatedhollow airfoil 34. The trailingedge cooling channel 70 may include a plurality ofpin fins 72 extending from theouter wall 32 forming thepressure side 46 to thesuction side 48 and forming zigzagcooling flow channels 74 within the trailingedge cooling channel 70 At least a portion of thepin fins 72 may have cross-sectional areas with aleading edge 76 and a trailingedge 78 that is positioned on adownstream corner 80 and separated from the leadingedge 76 by a concave side surface 82 and aconvex side surface 84 on an opposite side of thepin fin 72 from the concave side 82. One or more of the zigzagcooling flow channels 74 may be formed from a plurality ofpin fins 72 aligned such that the concave and convex side surfaces 82, 84 alternate moving towards the trailingedge 42 As shown inFIGS. 4 and 14 , a firstupstream pin fin 86 may have a cross-sectional area formed from anupstream section 88 and adownstream section 90. Theupstream section 88 may be generally linear with a constant width, and thedownstream section 90 may be generally linear with a tapered width that reduces in width moving towards the trailingedge 42 The upstream anddownstream sections - During use, cooling fluids may be supplied from a compressor or other such source to the inner aspect of the
corrugated insert 18 of theinternal cooling system 14. Cooling fluids are passed through theinlets 56 into the leading edgenearwall cooling channel 20 where the fluids separate with a portion flowing into the pressure side nearwall coolingchannel 22 and a portion flowing into the suction side nearwall coolingchannel 24. Thepeaks 28 andvalleys 30 of thecorrugated insert 18 create periodic impingement on theinner surface 50 of theouter wall 32. Thepartition walls 38 also direct the cooling fluids towards the trailingedge 42, and in at least some embodiments, create a nonlinear flow path toward the trailing edge to increase convection of heat from the outer wall to the cooling fluid. The cooling fluid may be exhausted through film cooling holes 92 at downstream ends of the pressure and suction sidenearwall cooling channels - Cooling fluids may also be passed to the trailing
edge cooling channel 70 via one or more trailingedge supply channels 94. The cooling fluids may be metered through metering holes 96 into the trailingedge cooling channel 70. The cooling fluids may flow into the zigzagcooling flow channels 74 where thepin fins 72 direct the cooling fluids in a nonlinear, back and forth motion to the trailingedge 42, where the cooling fluids are exhausted. The cooling fluids in the trailingedge cooling channel 70 receive heat from theouter wall 32 forming the pressure andsuction sides pin fins 72 - The foregoing is provided for purposes of illustrating, explaining, and describing embodiments of this invention. Modifications and adaptations to these embodiments will be apparent to those skilled in the art and may be made without departing from the scope or spirit of this invention.
Claims (20)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/155,422 US20150198050A1 (en) | 2014-01-15 | 2014-01-15 | Internal cooling system with corrugated insert forming nearwall cooling channels for airfoil usable in a gas turbine engine |
PCT/US2015/011496 WO2015109040A1 (en) | 2014-01-15 | 2015-01-15 | Internal cooling system with corrugated insert forming nearwall cooling channels for gas turbine airfoil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/155,422 US20150198050A1 (en) | 2014-01-15 | 2014-01-15 | Internal cooling system with corrugated insert forming nearwall cooling channels for airfoil usable in a gas turbine engine |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150198050A1 true US20150198050A1 (en) | 2015-07-16 |
Family
ID=52435012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/155,422 Abandoned US20150198050A1 (en) | 2014-01-15 | 2014-01-15 | Internal cooling system with corrugated insert forming nearwall cooling channels for airfoil usable in a gas turbine engine |
Country Status (2)
Country | Link |
---|---|
US (1) | US20150198050A1 (en) |
WO (1) | WO2015109040A1 (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150139814A1 (en) * | 2013-11-20 | 2015-05-21 | Mitsubishi Hitachi Power Systems, Ltd. | Gas Turbine Blade |
EP3124747A1 (en) * | 2015-07-31 | 2017-02-01 | Rolls-Royce Corporation | Turbine airfoils with micro cooling features |
EP3170975A1 (en) * | 2015-11-17 | 2017-05-24 | Kabushiki Kaisha Toshiba | Cooling structure and gas turbine |
WO2017105379A1 (en) * | 2015-12-14 | 2017-06-22 | Siemens Aktiengesellschaft | Turbine airfoil with profiled flow blocking feature for enhanced near wall cooling |
US20170204734A1 (en) * | 2016-01-20 | 2017-07-20 | General Electric Company | Cooled CMC Wall Contouring |
EP3216982A1 (en) * | 2016-02-26 | 2017-09-13 | Siemens Energy, Inc. | Turbine airfoil having near-wall cooling insert |
US20170268358A1 (en) * | 2014-09-04 | 2017-09-21 | Siemens Aktiengesellschaft | Internal cooling system with insert forming nearwall cooling channels in midchord cooling cavities of a gas turbine airfoil |
US9863256B2 (en) * | 2014-09-04 | 2018-01-09 | Siemens Aktiengesellschaft | Internal cooling system with insert forming nearwall cooling channels in an aft cooling cavity of an airfoil usable in a gas turbine engine |
US20180156044A1 (en) * | 2016-12-02 | 2018-06-07 | General Electric Company | Engine component with flow enhancer |
US20180328224A1 (en) * | 2017-05-09 | 2018-11-15 | General Electric Company | Impingement insert |
US20190003315A1 (en) * | 2017-02-03 | 2019-01-03 | General Electric Company | Fluid cooling systems for a gas turbine engine |
US10436037B2 (en) * | 2016-07-22 | 2019-10-08 | General Electric Company | Blade with parallel corrugated surfaces on inner and outer surfaces |
US10443399B2 (en) | 2016-07-22 | 2019-10-15 | General Electric Company | Turbine vane with coupon having corrugated surface(s) |
US10450868B2 (en) | 2016-07-22 | 2019-10-22 | General Electric Company | Turbine rotor blade with coupon having corrugated surface(s) |
US10465520B2 (en) | 2016-07-22 | 2019-11-05 | General Electric Company | Blade with corrugated outer surface(s) |
US10465525B2 (en) | 2016-07-22 | 2019-11-05 | General Electric Company | Blade with internal rib having corrugated surface(s) |
US20200190987A1 (en) * | 2018-12-18 | 2020-06-18 | General Electric Company | Turbine engine airfoil |
EP3748126A1 (en) * | 2019-06-05 | 2020-12-09 | Raytheon Technologies Corporation | Components for gas turbine engines |
US20210123352A1 (en) * | 2019-10-28 | 2021-04-29 | Rolls-Royce Plc | Turbine vane assembly incorporating ceramic matrix composite materials and cooling |
US11098602B2 (en) * | 2018-04-17 | 2021-08-24 | Doosan Heavy Industries & Construction Co., Ltd. | Turbine vane equipped with insert support |
CN114096737A (en) * | 2019-06-28 | 2022-02-25 | 西门子能源全球两合公司 | Turbine airfoil incorporating modal frequency response tuning |
US11725526B1 (en) | 2022-03-08 | 2023-08-15 | General Electric Company | Turbofan engine having nacelle with non-annular inlet |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10156147B2 (en) * | 2015-12-18 | 2018-12-18 | United Technologies Corporation | Method and apparatus for cooling gas turbine engine component |
US10344607B2 (en) | 2017-01-26 | 2019-07-09 | United Technologies Corporation | Internally cooled engine components |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2590457A (en) * | 1946-04-20 | 1952-03-25 | Sigma | Jet propulsion device for airscrews or rotary wings |
US2994124A (en) * | 1955-10-03 | 1961-08-01 | Gen Electric | Clad cermet body |
US3446481A (en) * | 1967-03-24 | 1969-05-27 | Gen Electric | Liquid cooled turbine rotor |
US3700348A (en) * | 1968-08-13 | 1972-10-24 | Gen Electric | Turbomachinery blade structure |
US4359310A (en) * | 1979-12-12 | 1982-11-16 | Bbc Brown, Boveri & Company Limited | Cooled wall |
US4617072A (en) * | 1983-07-30 | 1986-10-14 | Mtu Motoren-Und Turbinen-Union Muenchen Gmbh | Method for producing a composite ceramic body |
US5704763A (en) * | 1990-08-01 | 1998-01-06 | General Electric Company | Shear jet cooling passages for internally cooled machine elements |
US6018950A (en) * | 1997-06-13 | 2000-02-01 | Siemens Westinghouse Power Corporation | Combustion turbine modular cooling panel |
US6142734A (en) * | 1999-04-06 | 2000-11-07 | General Electric Company | Internally grooved turbine wall |
US20110110772A1 (en) * | 2009-11-11 | 2011-05-12 | Arrell Douglas J | Turbine Engine Components with Near Surface Cooling Channels and Methods of Making the Same |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2873944A (en) * | 1952-09-10 | 1959-02-17 | Gen Motors Corp | Turbine blade cooling |
US3846041A (en) * | 1972-10-31 | 1974-11-05 | Avco Corp | Impingement cooled turbine blades and method of making same |
JPS6380004A (en) * | 1986-09-22 | 1988-04-11 | Hitachi Ltd | Gas turbine stator blade |
US5246341A (en) * | 1992-07-06 | 1993-09-21 | United Technologies Corporation | Turbine blade trailing edge cooling construction |
DE4430302A1 (en) * | 1994-08-26 | 1996-02-29 | Abb Management Ag | Impact-cooled wall part |
US6428273B1 (en) * | 2001-01-05 | 2002-08-06 | General Electric Company | Truncated rib turbine nozzle |
JP4191578B2 (en) * | 2003-11-21 | 2008-12-03 | 三菱重工業株式会社 | Turbine cooling blade of gas turbine engine |
JP2009162119A (en) * | 2008-01-08 | 2009-07-23 | Ihi Corp | Turbine blade cooling structure |
US8109724B2 (en) * | 2009-03-26 | 2012-02-07 | United Technologies Corporation | Recessed metering standoffs for airfoil baffle |
US20120070302A1 (en) * | 2010-09-20 | 2012-03-22 | Ching-Pang Lee | Turbine airfoil vane with an impingement insert having a plurality of impingement nozzles |
JP5927893B2 (en) * | 2011-12-15 | 2016-06-01 | 株式会社Ihi | Impinge cooling mechanism, turbine blade and combustor |
-
2014
- 2014-01-15 US US14/155,422 patent/US20150198050A1/en not_active Abandoned
-
2015
- 2015-01-15 WO PCT/US2015/011496 patent/WO2015109040A1/en active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2590457A (en) * | 1946-04-20 | 1952-03-25 | Sigma | Jet propulsion device for airscrews or rotary wings |
US2994124A (en) * | 1955-10-03 | 1961-08-01 | Gen Electric | Clad cermet body |
US3446481A (en) * | 1967-03-24 | 1969-05-27 | Gen Electric | Liquid cooled turbine rotor |
US3700348A (en) * | 1968-08-13 | 1972-10-24 | Gen Electric | Turbomachinery blade structure |
US4359310A (en) * | 1979-12-12 | 1982-11-16 | Bbc Brown, Boveri & Company Limited | Cooled wall |
US4617072A (en) * | 1983-07-30 | 1986-10-14 | Mtu Motoren-Und Turbinen-Union Muenchen Gmbh | Method for producing a composite ceramic body |
US5704763A (en) * | 1990-08-01 | 1998-01-06 | General Electric Company | Shear jet cooling passages for internally cooled machine elements |
US6018950A (en) * | 1997-06-13 | 2000-02-01 | Siemens Westinghouse Power Corporation | Combustion turbine modular cooling panel |
US6142734A (en) * | 1999-04-06 | 2000-11-07 | General Electric Company | Internally grooved turbine wall |
US20110110772A1 (en) * | 2009-11-11 | 2011-05-12 | Arrell Douglas J | Turbine Engine Components with Near Surface Cooling Channels and Methods of Making the Same |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150139814A1 (en) * | 2013-11-20 | 2015-05-21 | Mitsubishi Hitachi Power Systems, Ltd. | Gas Turbine Blade |
US10006368B2 (en) * | 2013-11-20 | 2018-06-26 | Mitsubishi Hitachi Power Systems, Ltd. | Gas turbine blade |
US20170268358A1 (en) * | 2014-09-04 | 2017-09-21 | Siemens Aktiengesellschaft | Internal cooling system with insert forming nearwall cooling channels in midchord cooling cavities of a gas turbine airfoil |
US9863256B2 (en) * | 2014-09-04 | 2018-01-09 | Siemens Aktiengesellschaft | Internal cooling system with insert forming nearwall cooling channels in an aft cooling cavity of an airfoil usable in a gas turbine engine |
US9840930B2 (en) * | 2014-09-04 | 2017-12-12 | Siemens Aktiengesellschaft | Internal cooling system with insert forming nearwall cooling channels in midchord cooling cavities of a gas turbine airfoil |
US10876413B2 (en) | 2015-07-31 | 2020-12-29 | Rolls-Royce North American Technologies Inc. | Turbine airfoils with micro cooling features |
US10329924B2 (en) | 2015-07-31 | 2019-06-25 | Rolls-Royce North American Technologies Inc. | Turbine airfoils with micro cooling features |
EP3124747A1 (en) * | 2015-07-31 | 2017-02-01 | Rolls-Royce Corporation | Turbine airfoils with micro cooling features |
EP3170975A1 (en) * | 2015-11-17 | 2017-05-24 | Kabushiki Kaisha Toshiba | Cooling structure and gas turbine |
WO2017105379A1 (en) * | 2015-12-14 | 2017-06-22 | Siemens Aktiengesellschaft | Turbine airfoil with profiled flow blocking feature for enhanced near wall cooling |
US20170204734A1 (en) * | 2016-01-20 | 2017-07-20 | General Electric Company | Cooled CMC Wall Contouring |
US10408073B2 (en) * | 2016-01-20 | 2019-09-10 | General Electric Company | Cooled CMC wall contouring |
EP3216982A1 (en) * | 2016-02-26 | 2017-09-13 | Siemens Energy, Inc. | Turbine airfoil having near-wall cooling insert |
US10465520B2 (en) | 2016-07-22 | 2019-11-05 | General Electric Company | Blade with corrugated outer surface(s) |
US10465525B2 (en) | 2016-07-22 | 2019-11-05 | General Electric Company | Blade with internal rib having corrugated surface(s) |
US10436037B2 (en) * | 2016-07-22 | 2019-10-08 | General Electric Company | Blade with parallel corrugated surfaces on inner and outer surfaces |
US10443399B2 (en) | 2016-07-22 | 2019-10-15 | General Electric Company | Turbine vane with coupon having corrugated surface(s) |
US10450868B2 (en) | 2016-07-22 | 2019-10-22 | General Electric Company | Turbine rotor blade with coupon having corrugated surface(s) |
US10830060B2 (en) * | 2016-12-02 | 2020-11-10 | General Electric Company | Engine component with flow enhancer |
US20180156044A1 (en) * | 2016-12-02 | 2018-06-07 | General Electric Company | Engine component with flow enhancer |
US10830056B2 (en) * | 2017-02-03 | 2020-11-10 | General Electric Company | Fluid cooling systems for a gas turbine engine |
US20190003315A1 (en) * | 2017-02-03 | 2019-01-03 | General Electric Company | Fluid cooling systems for a gas turbine engine |
US20180328224A1 (en) * | 2017-05-09 | 2018-11-15 | General Electric Company | Impingement insert |
US10494948B2 (en) * | 2017-05-09 | 2019-12-03 | General Electric Company | Impingement insert |
US11098602B2 (en) * | 2018-04-17 | 2021-08-24 | Doosan Heavy Industries & Construction Co., Ltd. | Turbine vane equipped with insert support |
US10767492B2 (en) * | 2018-12-18 | 2020-09-08 | General Electric Company | Turbine engine airfoil |
US11639664B2 (en) | 2018-12-18 | 2023-05-02 | General Electric Company | Turbine engine airfoil |
US20200190987A1 (en) * | 2018-12-18 | 2020-06-18 | General Electric Company | Turbine engine airfoil |
US11384642B2 (en) | 2018-12-18 | 2022-07-12 | General Electric Company | Turbine engine airfoil |
US11371360B2 (en) * | 2019-06-05 | 2022-06-28 | Raytheon Technologies Corporation | Components for gas turbine engines |
EP3748126A1 (en) * | 2019-06-05 | 2020-12-09 | Raytheon Technologies Corporation | Components for gas turbine engines |
US20200386103A1 (en) * | 2019-06-05 | 2020-12-10 | United Technologies Corporation | Components for gas turbine engines |
CN114096737A (en) * | 2019-06-28 | 2022-02-25 | 西门子能源全球两合公司 | Turbine airfoil incorporating modal frequency response tuning |
US11268392B2 (en) * | 2019-10-28 | 2022-03-08 | Rolls-Royce Plc | Turbine vane assembly incorporating ceramic matrix composite materials and cooling |
US20210123352A1 (en) * | 2019-10-28 | 2021-04-29 | Rolls-Royce Plc | Turbine vane assembly incorporating ceramic matrix composite materials and cooling |
US11725526B1 (en) | 2022-03-08 | 2023-08-15 | General Electric Company | Turbofan engine having nacelle with non-annular inlet |
Also Published As
Publication number | Publication date |
---|---|
WO2015109040A1 (en) | 2015-07-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20150198050A1 (en) | Internal cooling system with corrugated insert forming nearwall cooling channels for airfoil usable in a gas turbine engine | |
US9840930B2 (en) | Internal cooling system with insert forming nearwall cooling channels in midchord cooling cavities of a gas turbine airfoil | |
US8920122B2 (en) | Turbine airfoil with an internal cooling system having vortex forming turbulators | |
US8167559B2 (en) | Turbine vane for a gas turbine engine having serpentine cooling channels within the outer wall | |
US10060270B2 (en) | Internal cooling system with converging-diverging exit slots in trailing edge cooling channel for an airfoil in a turbine engine | |
US8147196B2 (en) | Turbine airfoil with a compliant outer wall | |
US8167560B2 (en) | Turbine airfoil with an internal cooling system having enhanced vortex forming turbulators | |
US8985949B2 (en) | Cooling system including wavy cooling chamber in a trailing edge portion of an airfoil assembly | |
US9863256B2 (en) | Internal cooling system with insert forming nearwall cooling channels in an aft cooling cavity of an airfoil usable in a gas turbine engine | |
US20090068023A1 (en) | Multi-pass cooling for turbine airfoils | |
US20180045059A1 (en) | Internal cooling system with insert forming nearwall cooling channels in an aft cooling cavity of a gas turbine airfoil including heat dissipating ribs | |
US9091495B2 (en) | Cooling passage including turbulator system in a turbine engine component | |
EP3167159B1 (en) | Impingement jet strike channel system within internal cooling systems | |
US20170370232A1 (en) | Turbine airfoil cooling system with chordwise extending squealer tip cooling channel | |
US20180038232A1 (en) | Turbine blade with a non-constraint flow turning guide structure | |
US9435212B2 (en) | Turbine airfoil with laterally extending snubber having internal cooling system | |
US20170138204A1 (en) | Cooling structure and gas turbine | |
US9551229B2 (en) | Turbine airfoil with an internal cooling system having trip strips with reduced pressure drop | |
WO2015156816A1 (en) | Turbine airfoil with an internal cooling system having turbulators with anti-vortex ribs | |
WO2016118136A1 (en) | Turbine airfoil |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SIEMENS ENERGY, INC., FLORIDA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEE, CHING-PANG;UM, JAE Y.;HILLIER, GERALD L.;SIGNING DATES FROM 20140131 TO 20140203;REEL/FRAME:032884/0726 Owner name: QUEST ASE INC., OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHROEDER, ERIC;ABDULLAH, MOHAMED;SIGNING DATES FROM 20140210 TO 20140330;REEL/FRAME:032884/0921 |
|
AS | Assignment |
Owner name: SIEMENS ENERGY, INC., FLORIDA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:QUEST GLOBAL SERVICES NA INC.;REEL/FRAME:034186/0458 Effective date: 20140922 |
|
AS | Assignment |
Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SIEMENS ENERGY, INC.;REEL/FRAME:035111/0508 Effective date: 20150123 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |