US20190093483A1 - Systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine - Google Patents
Systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine Download PDFInfo
- Publication number
- US20190093483A1 US20190093483A1 US16/188,636 US201816188636A US2019093483A1 US 20190093483 A1 US20190093483 A1 US 20190093483A1 US 201816188636 A US201816188636 A US 201816188636A US 2019093483 A1 US2019093483 A1 US 2019093483A1
- Authority
- US
- United States
- Prior art keywords
- airfoil
- bosses
- holes
- cooling holes
- gas turbine
- 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
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Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- F01D5/005—Repairing methods or devices
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
- F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2215/00—Details of workpieces
- B23B2215/76—Components for turbines
- B23B2215/81—Turbine 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
-
- 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
- F05D2230/00—Manufacture
- F05D2230/10—Manufacture by removing material
-
- 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
- F05D2230/00—Manufacture
- F05D2230/10—Manufacture by removing material
- F05D2230/11—Manufacture by removing material by electrochemical methods
-
- 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
- F05D2230/00—Manufacture
- F05D2230/10—Manufacture by removing material
- F05D2230/14—Micromachining
-
- 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
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/21—Manufacture essentially without removing material by casting
-
- 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
- F05D2230/00—Manufacture
- F05D2230/80—Repairing, retrofitting or upgrading methods
-
- 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
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/305—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the pressure side of a rotor blade
-
- 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
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/306—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the suction side of a rotor blade
-
- 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
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
-
- 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
-
- 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
- F05D2260/202—Heat transfer, e.g. cooling by film cooling
Definitions
- Illustrative embodiments of the disclosure are directed to, among other things, systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine.
- one or more hole starter bosses may be cast on a suction side, a pressure side, or both of the airfoil.
- the cooling holes may be drilled into the surface of the suction side or the pressure side of the airfoil.
- the starter bosses may enable a relatively steep drill angle into the surface of the airfoil.
- the hole starter bosses may be removed. For example, the hole starter bosses may be ground off of the surface of the airfoil.
- the cover could be on either the flowpath side or the seal side of the shroud and could be recessed so as to create a smooth surface. Other means of closing the line-of-sight access holes may also be used. In some instances, the line-of-sight access holes may be left open.
Abstract
Description
- The disclosure claims priority to, the benefit of, and is a divisional application of U.S. patent application Ser. No. 14/950,081, filed Nov. 24, 2015, now U.S. Pat. No. ______, which is hereby incorporated herein in its entirety by reference.
- Embodiments of the disclosure relate generally to gas turbine engines and more particularly relate to systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine.
- In some instances, buckets may be cooled with radial holes that exit (or break out) on a surface of the airfoil rather than running the full length of the airfoil and emerging at the tip. Such cooling holes may break out of the airfoil in the shape of a long, narrow, ellipse. It can be very difficult to drill holes into the airfoil at such a shallow angle.
- Some or all of the above needs and/or problems may be addressed by certain embodiments of the disclosure. According to one embodiment, there is disclosed a method for producing one or more cooling holes in an airfoil for a gas turbine engine. The method may include casting one or more hole starter bosses on a suction side, a pressure side, or both of the airfoil, drilling the one or more cooling holes into the airfoil by way of the one or more hole starter bosses, and removing the one or more hole starter bosses after drilling the one or more cooling holes into the airfoil.
- According to another embodiment, there is disclosed an airfoil for a gas turbine engine. The airfoil may include a suction side, a pressure side opposite the suction side, and one or more hole starter bosses cast on the suction side, the pressure side, or both.
- Further, according to another embodiment, there is disclosed a method for producing one or more cooling holes in an airfoil for a gas turbine engine. The method may include casting one or more hole starter bosses on a suction side, a pressure side, or both of the airfoil, drilling one or more line-of-sight access holes in a shroud of the airfoil to provide access to the one or more hole starter bosses, drilling the one or more cooling holes into the airfoil by way of the one or more hole starter bosses, and grinding the one or more hole starter bosses after drilling the one or more cooling holes into the airfoil.
- Other embodiments, aspects, and features of the disclosure will become apparent to those skilled in the art from the following detailed description, the accompanying drawings, and the appended claims.
- Reference will now be made to the accompanying drawings, which are not necessarily drawn to scale.
-
FIG. 1 schematically depicts an example view of a gas turbine engine according to an embodiment of the disclosure. -
FIG. 2 schematically depicts an example airfoil according to an embodiment of the disclosure. -
FIG. 3 schematically depicts an example airfoil according to an embodiment of the disclosure. -
FIG. 4 schematically depicts an example airfoil according to an embodiment of the disclosure. -
FIG. 5 schematically depicts an example airfoil according to an embodiment of the disclosure. -
FIG. 6 schematically depicts an example airfoil according to an embodiment of the disclosure. - Illustrative embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. The disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Like numbers refer to like elements throughout.
- Illustrative embodiments of the disclosure are directed to, among other things, systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine. In some instances, one or more hole starter bosses may be cast on a suction side, a pressure side, or both of the airfoil. Using the hole starter bosses as a guide, the cooling holes may be drilled into the surface of the suction side or the pressure side of the airfoil. The starter bosses may enable a relatively steep drill angle into the surface of the airfoil. After the cooling holes have been drilled into the surface of the airfoil, the hole starter bosses may be removed. For example, the hole starter bosses may be ground off of the surface of the airfoil.
- In some instances, a shroud at the tip of the airfoil may prevent adequate access to the hole starter bosses. For example, the shroud may block the drill angle or the line-of-sight of a drill to the hole starter bosses. In such instances, one or more line-of-sight access holes may be drilled or cast into the shroud of the airfoil to provide access to the hole starter bosses. After the cooling holes have been drilled into the surface of the airfoil, the line-of-sight access holes may be filled in. For example, the line-of-sight access holes may be sealed by brazing, plugging, welding, or covered with a plate that may be brazed or welded in place. The cover could be on either the flowpath side or the seal side of the shroud and could be recessed so as to create a smooth surface. Other means of closing the line-of-sight access holes may also be used. In some instances, the line-of-sight access holes may be left open.
- In addition, one or more holes may be drilled into a shank of the airfoil. In this manner, the cooling holes drilled into the surface of the airfoil may meet with the holes drilled up from the shank so that the cooling holes are in fluid communication with the holes in the shank of the airfoil. Accordingly, cooling air may flow from the holes in the shank of the airfoil, through the cooling holes, and out of the surface of the suction side and/or the pressure side of the airfoil.
- In certain embodiments, the hole starter bosses may include a protrusion projecting from the surface of the suction side and/or the pressure side of the airfoil. In other instances, the hole starter bosses may include an indentation on the surface of the suction side and/or the pressure side of the airfoil. The hole starter bosses may include a single hole or a number of holes. The holes can be round or other producible shapes. The hole starter bosses, whether a protrusion or an indentation, may be cast on the surface the airfoil. If an indentation, the hole starter bosses can also be produced by the removal of material using electrical discharge machining or other means.
- Turning now to the drawings,
FIG. 1 shows a schematic view ofgas turbine engine 100 as may be used herein. Thegas turbine engine 100 may include acompressor 102. Thecompressor 102 compresses an incoming flow ofair 104. Thecompressor 102 delivers the compressed flow ofair 104 to acombustor 106. Thecombustor 106 mixes the compressed flow ofair 104 with a compressed flow offuel 108 and ignites the mixture to create a flow ofcombustion gases 110. Although only asingle combustor 106 is shown, thegas turbine engine 100 may include any number ofcombustors 106. The flow ofcombustion gases 110 is in turn delivered to adownstream turbine 112. The flow ofcombustion gases 110 drives theturbine 112 to produce mechanical work. The mechanical work produced in theturbine 112 drives thecompressor 102 via ashaft 114 and anexternal load 116, such as an electrical generator or the like. - The
gas turbine engine 100 may use natural gas, various types of syngas, and/or other types of fuels. Thegas turbine engine 100 may be anyone of a number of different gas turbine engines such as those offered by General Electric Company of Schenectady, N.Y. and the like. Thegas turbine engine 100 may have different configurations and may use other types of components. Other types of gas turbine engines also may be used herein. Multiple gas turbine engines, other types of turbines, and other types of power generation equipment also may be used herein together. -
FIG. 2 schematically depicts one example embodiment of anairfoil 200 that may be used in thecompressor 102 or theturbine 112 ofFIG. 1 . Theairfoil 200 may include aleading edge 202, a trailingedge 204, asuction side 206 defined between theleading edge 202 and the trailingedge 204, and apressure side 208 defined between theleading edge 202 and the trailingedge 204 opposite thesuction side 206. Theairfoil 200 may include aplatform 210, ashank 212, adovetail 214, and atip shroud 216. - As depicted in
FIG. 3 , theairfoil 200 may include a number ofcooling holes 218 that exit (or break out) of theairfoil 200 in the shape of a long, narrow,ellipse 220 on the surface of thesuction side 206 and/or thepressure side 208. The cooling holes 218 may be drilled using the Shaped Tube Electrochemical Machining (STEM) process. The angle of the cooling holes 218 relative to the surface of theairfoil 200 can make it very difficult to drill the cooling holes 218 into theairfoil 200 at such a shallow angle. - As depicted in
FIG. 4 , one or morehole starter bosses 222 may be cast on thesuction side 206 and/or thepressure side 208 of theairfoil 200 to enable the production of the radial cooling holes 218 that break through the airfoil surface on thesuction side 206 and/or thepressure side 208. Using thehole starter bosses 222 as a guide, the cooling holes 218 may be drilled into the surface of theairfoil 200. In this manner, thestarter bosses 222 may enable a relatively step drill angle into the surface of theairfoil 200. After the cooling holes 218 have been drilled into the surface of theairfoil 200, thehole starter bosses 222 may be removed. For example, thehole starter bosses 222 may be ground off of the surface of thesuction side 206 and/or thepressure side 208 of theairfoil 200. - In certain embodiments, the
hole starter bosses 222 may include aprotrusion 224 projecting from the surface of thesuction side 206 and/or thepressure side 208 of theairfoil 200. In other instances, thehole starter bosses 222 may include an indentation on the surface of thesuction side 206 and/or thepressure side 208 of theairfoil 200. Thehole starter bosses 222 may include asingle hole 226 or a number of holes. Theholes 226 may act as drill guides. Theholes 226 can be round or other producible shapes. Thehole starter bosses 222, whether aprotrusion 224 or an indentation, may be cast on the surface of thesuction side 206 and/or thepressure side 208 of theairfoil 200. If an indentation, thehole starter bosses 222 can also be produced by the removal of material using electrical discharge machining or other means. - In some instances, the
shroud 216 at the tip of theairfoil 200 may prevent adequate access to thehole starter bosses 222. For example, theshroud 216 may block the drill angle or the line-of-sight of a drill to thehole starter bosses 222. In such instances, as depicted inFIG. 5 , one or more line-of-sight access holes 228 may be drilled or cast into theshroud 216 of theairfoil 200 to provide access to thehole starter bosses 222. After the cooling holes 218 have been drilled into the surface of theairfoil 200, the line-of-sight access holes 228 may be filled in. For example, the line-of-sight access holes 228 may be sealed by brazing, plugging, welding, or covered with a plate that may be brazed or welded in place. The cover could be on either the flowpath side or the seal side of theshroud 216 and could be recessed so as to create a smooth surface. Other means of closing the line-of-sight access holes 228 may also be used. In some instances, the line-of-sight access holes 228 may be left open. - In addition, as depicted in
FIG. 6 , one ormore holes 230 may be drilled into theshank 212 of theairfoil 200. In this manner, the cooling holes 218 drilled into the surface of thesuction side 206 and/or thepressure side 208 of theairfoil 200 may meet with theholes 230 drilled up from theshank 212 so that the cooling holes 218 are in fluid communication with theholes 230 in theshank 212 of theairfoil 200. Accordingly, cooling air may flow from theholes 230 in theshank 212 of theairfoil 200, through the cooling holes 218, and out of the surface of thesuction side 206 and/or thepressure side 208 of theairfoil 200. - Although embodiments have been described in language specific to structural features and/or methodological acts, it is to be understood that the disclosure is not necessarily limited to the specific features or acts described. Rather, the specific features and acts are disclosed as illustrative forms of implementing the embodiments.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/188,636 US20190093483A1 (en) | 2015-11-24 | 2018-11-13 | Systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/950,081 US10156142B2 (en) | 2015-11-24 | 2015-11-24 | Systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine |
US16/188,636 US20190093483A1 (en) | 2015-11-24 | 2018-11-13 | Systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/950,081 Division US10156142B2 (en) | 2015-11-24 | 2015-11-24 | Systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine |
Publications (1)
Publication Number | Publication Date |
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US20190093483A1 true US20190093483A1 (en) | 2019-03-28 |
Family
ID=57348548
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/950,081 Active 2037-02-27 US10156142B2 (en) | 2015-11-24 | 2015-11-24 | Systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine |
US16/188,636 Abandoned US20190093483A1 (en) | 2015-11-24 | 2018-11-13 | Systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/950,081 Active 2037-02-27 US10156142B2 (en) | 2015-11-24 | 2015-11-24 | Systems and methods for producing one or more cooling holes in an airfoil for a gas turbine engine |
Country Status (4)
Country | Link |
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US (2) | US10156142B2 (en) |
EP (1) | EP3236008B1 (en) |
JP (1) | JP6845664B2 (en) |
CN (1) | CN106914731B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11060407B2 (en) * | 2017-06-22 | 2021-07-13 | General Electric Company | Turbomachine rotor blade |
US10612391B2 (en) | 2018-01-05 | 2020-04-07 | General Electric Company | Two portion cooling passage for airfoil |
US10933481B2 (en) | 2018-01-05 | 2021-03-02 | General Electric Company | Method of forming cooling passage for turbine component with cap element |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5117626A (en) | 1990-09-04 | 1992-06-02 | Westinghouse Electric Corp. | Apparatus for cooling rotating blades in a gas turbine |
US5869194A (en) * | 1996-04-30 | 1999-02-09 | United Technologies Corporation | Blank for manufacturing precisely shaped parts |
EP1041247B1 (en) | 1999-04-01 | 2012-08-01 | General Electric Company | Gas turbine airfoil comprising an open cooling circuit |
DE10027842A1 (en) * | 2000-06-05 | 2001-12-20 | Alstom Power Nv | Gas turbine layout cooling system bleeds portion of film cooling air through turbine blade via inlet or outlet edge borings for direct blade wall service. |
EP1712739A1 (en) * | 2005-04-12 | 2006-10-18 | Siemens Aktiengesellschaft | Component with film cooling hole |
US7510376B2 (en) * | 2005-08-25 | 2009-03-31 | General Electric Company | Skewed tip hole turbine blade |
US20070141385A1 (en) * | 2005-12-21 | 2007-06-21 | General Electric Company | Method of coating gas turbine components |
JP6092661B2 (en) * | 2013-03-05 | 2017-03-08 | 三菱日立パワーシステムズ株式会社 | Gas turbine blade |
US10316672B2 (en) * | 2013-09-26 | 2019-06-11 | General Electric Company | Airfoils with low-angle holes and methods for drilling same |
-
2015
- 2015-11-24 US US14/950,081 patent/US10156142B2/en active Active
-
2016
- 2016-11-17 JP JP2016223695A patent/JP6845664B2/en active Active
- 2016-11-18 EP EP16199471.0A patent/EP3236008B1/en active Active
- 2016-11-24 CN CN201611043645.9A patent/CN106914731B/en active Active
-
2018
- 2018-11-13 US US16/188,636 patent/US20190093483A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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CN106914731A (en) | 2017-07-04 |
US10156142B2 (en) | 2018-12-18 |
JP2017106440A (en) | 2017-06-15 |
CN106914731B (en) | 2021-11-02 |
US20170145830A1 (en) | 2017-05-25 |
EP3236008B1 (en) | 2022-07-27 |
JP6845664B2 (en) | 2021-03-24 |
EP3236008A1 (en) | 2017-10-25 |
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