US20090252615A1 - Cooled Turbine Rotor Blade - Google Patents
Cooled Turbine Rotor Blade Download PDFInfo
- Publication number
- US20090252615A1 US20090252615A1 US12/310,690 US31069007A US2009252615A1 US 20090252615 A1 US20090252615 A1 US 20090252615A1 US 31069007 A US31069007 A US 31069007A US 2009252615 A1 US2009252615 A1 US 2009252615A1
- Authority
- US
- United States
- Prior art keywords
- turbine rotor
- rotor blade
- area
- cooled turbine
- cooling
- 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
- F01D5/187—Convection cooling
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- 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
- F05D2240/122—Fluid guiding means, e.g. vanes related to the trailing edge of a stator vane
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- 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
- F05D2240/304—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 trailing edge of a rotor blade
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- 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
- F05D2250/10—Two-dimensional
- F05D2250/18—Two-dimensional patterned
- F05D2250/185—Two-dimensional patterned serpentine-like
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- 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
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- 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
- F05D2260/221—Improvement of heat transfer
- F05D2260/2212—Improvement of heat transfer by creating turbulence
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Definitions
- the invention relates to a cooled turbine rotor blade.
- a turbine rotor blade of this generic type and having an airfoil profile is known from EP 0 735 240 A1.
- a plurality of mutually adjacent cooling channels are provided in order to cool the airfoil profile, are arranged in a meandering shape, and a coolant can flow through them sequentially.
- the cooling channels in this case each run parallel to the leading edge.
- Respectively adjacent cooling channels are separated from one another by ribs, with the ribs ending in a direction-reversal area in which the adjacent cooling channels merge into one another.
- direction-changing blades FIG. 12
- direction-changing blades FIG. 12
- a turbine blade is known from U.S. Pat. No. 5,246,340, which has a plurality of mutually parallel cooling channels in the interior.
- the cooling channels are in each case separated by a rib.
- An opening which connects two adjacent cooling channels is provided in one of the ribs in the area of the blade tip, through which opening a lateral flow can pass for impingement cooling of the blade airfoil tip.
- GB 2 106 996 discloses a turbine blade having an impingement cooling insert in the form of a laminate.
- the object of the present invention is to provide a turbine rotor blade whose life is further improved.
- the object relating to the provision of a turbine rotor blade of this generic type is achieved by designing this turbine rotor blade according to the characterizing part of claim 1 . It is proposed that at least one of the ribs—seen from the attachment area to the tip area—has an essentially constant rib thickness and is curved toward the leading edge or trailing edge forming a cooling-channel corner area, which has an acute angle in longitudinal section, in the area of the airfoil tip, and that at least one opening is provided, which is arranged in the curvature, connects two adjacent cooling channels and through which a part of the coolant flow of the cooling channel which is adjacent to the corner area can flow into the acute-angled corner area of the cooling channel.
- the curved rib results in the direction of the cooling air flowing through the cooling channels being changed in a considerably more aerodynamic manner.
- the direction change is an integral component of the rib, as a result of which the regions with a relatively low flow rate or no flow rate (dead-water regions) in the direction-changing area can be avoided.
- the flow rate is in consequence kept approximately constant in that cooling channel toward which the rib is curved.
- the curvature of the rib results in an acute-angled corner area in the adjacent cooling channel, in which dead-water regions could now once again occur.
- At least one opening is also provided, which is arranged in the curvature and connects the two adjacent cooling channels, and through which a part of the cooling flow can pass over or flow over from one cooling channel into the other cooling channel at an early stage.
- the opening which is arranged in the curved rib can be provided in a particularly simple form.
- the casting apparatus which is used for casting the turbine rotor blades comprises, in order to produce the cavities through which a coolant can flow, a casting core which has core elements arranged in a meandering shape.
- a core support can be provided between two adjacent core elements and, after removal of the casting core from the cast, integral turbine blade, leaves behind it the opening within the curved rib. This results in a stabilized casting core which improves the accuracy of the production method.
- the terminating wall which is likewise frequently subject to local overheating and is also referred to as a crown base, can also be impingement-cooled on the basis of the coolant jet passing through the opening, in such a way that this likewise makes it possible to cool the terminating wall particularly efficiently.
- the opening just has to be inclined such that its longitudinal extent is directed at the terminating wall.
- the rib which is adjacent to the trailing edge is preferably curved in the area of the airfoil tip.
- the rib seen from the attachment area to the tip area—is curved toward the leading edge thus making it possible to provide an essentially constant flow cross-sectional area in a part of the direction-changing area between two adjacent coolant channels. This reduces the pressure losses in the coolant.
- the rib has an essentially constant rib thickness along its curvature.
- the inner face of the terminating wall is equipped with turbulators, thus making it possible to improve the cooling of the terminating wall or of the crown base in a simple manner.
- a coolant it is possible for a coolant to flow sequentially or else in parallel through the adjacent cooling channels. If the flow passes in parallel through the coolant channels, care must be taken to ensure that there is an adequate pressure gradient between them, in order to obtain a coolant flow which passes through the opening.
- FIGURE shows a longitudinal section through a turbine rotor blade according to the invention with cooling channels arranged in a meandering shape.
- the FIGURE shows a longitudinal section through a turbine rotor blade 10 which is produced by a casting method.
- the turbine rotor blade 10 which is therefore integral, has an attachment area 12 , with a firtree-shaped cross section, with a platform 14 and an airfoil profile 16 arranged thereon.
- the airfoil profile 16 which has an aerodynamically profiled cross section, is formed by a suction-side blade wall and a pressure-side blade wall, which each extend from a leading edge 18 to a trailing edge 20 and in this case surround a cavity, which is arranged in the interior of the airfoil profile 16 and in which a plurality of cooling channels 22 a , 22 b , 22 c , 22 d are provided.
- the cooling channels 22 are adjacent to one another and each run approximately parallel to the leading edge 18 .
- the mutually adjacent cooling channels 22 are each separated from one another in places by a rib 24 a , 24 b , 24 c which connects the pressure-side blade wall to the suction-side blade wall.
- the cooling channels 22 are bounded by a terminating wall 28 in the area of the airfoil tip 27 which is opposite the attachment area 12 .
- the terminating wall 28 is also referred to as a crown base.
- the turbine rotor blade 10 which is illustrated in the FIGURE has a cooling channel 22 a on the leading-edge side to which, on the attachment side, a coolant 29 , for example cooling air or cooling vapor, can be supplied.
- a coolant 29 for example cooling air or cooling vapor
- the cooling air that is supplied cools the area of the leading edge 18 of the airfoil profile 16 using conventional cooling methods, for example convection cooling, impingement cooling and/or film cooling.
- the coolant 29 which can be supplied to the root end of the cooling channel 22 b , flows along the channel 22 b to the airfoil tip 27 , and its direction is then changed in a direction-changing area 30 in order to reverse its flow direction, specifically toward the attachment area 12 .
- the rib 24 c which is adjacent to the trailing edge 20 is curved in the area of the airfoil tip 27 , with a constant rib thickness D.
- the curvature 32 is such that the rib 24 c —seen from the attachment area 12 to the tip area 26 —is curved toward the leading edge 18 .
- An acute-angled corner area 34 is formed by the curvature 32 of the rib 24 c , which is adjacent to the trailing edge 20 , in the cooling channel 22 d in the area of the airfoil tip 27 .
- An opening 40 is provided in the rib 24 c in the area of the curvature 32 , through which opening 40 the coolant 29 which is flowing in the direction-changing area 30 can partially flow out therefrom and can flow into the corner area 34 by virtue of the pressure ratio there. If required, a plurality of openings 40 may also be provided in order to influence the flow more specifically in the corner areas 34 .
- the corner area 34 can therefore be adequately cooled. Areas with reduced coolant flow rates and in consequence with inadequate cooling are therefore reliably avoided at this point.
- the coolant jet passing through the opening 40 impinges on the inner face 42 of the terminating wall 28 and in this case provides impingement cooling for the airfoil tip 27 .
- turbulators 44 can also be provided on the inner face 42 of the terminating wall 28 , further enlarging the surface area to be cooled.
- the coolant 29 which flows along the inner face 42 of the terminating wall 28 can further increase the heat transfer coefficient on the cooling-air side by virtue of the stimulation of turbulence, thus making it possible to achieve even better cooling of the crown base.
- the rib 24 a may merge, curved in the direction of the trailing edge 20 , into the terminating wall 28 in the tip area 26 of the turbine rotor blade 10 , with one or more openings likewise being provided in the curvature.
- the invention specifies a turbine rotor blade 10 for an axial-flow gas turbine, in particular a stationary gas turbine, which is equipped with an attachment area 12 , an airfoil profile 16 and a plurality of cooling channels 22 which are arranged in a meandering shape in the interior of the airfoil profile 16 .
- the invention proposes that at least one of the ribs 24 run in a curved form toward the leading edge 18 or toward the trailing edge 20 in the area of the airfoil tip 27 , with the rib thickness D remaining constant, and that at least one opening 40 be provided in the curvature 32 of the rib 24 , through which opening 40 a portion of the coolant 29 which is flowing in the direction-changing area 30 can pass into the adjacent cooling channel 22 d.
Abstract
A cooled turbine rotor blade for a gas turbine which is traversed axially by flow and is equipped with an attachment area and an airfoil profile is provided. Meandering cooling channels with interposed deflecting regions are provided in the interior of the airfoil profile. In the deflecting regions, it is possible to prevent dead water regions, which are generated in the prior art, by virtue of at least one of the ribs running so as to curve towards the leading edge or towards the trailing edge in the region of the airfoil tip. At the same time, an opening is provided in the curvature of the rib. Through this opening a part of the coolant flows in the deflecting region and can pass over into the adjacent cooling duct.
Description
- This application is the US National Stage of International Application No. PCT/EP2007/056425, filed Jun. 27, 2007 and claims the benefit thereof. The International Application claims the benefits of European application No. 06018490.0 EP filed Sep. 4, 2006, both of the applications are incorporated by reference herein in their entirety.
- The invention relates to a cooled turbine rotor blade.
- By way of example, a turbine rotor blade of this generic type and having an airfoil profile is known from EP 0 735 240 A1. A plurality of mutually adjacent cooling channels are provided in order to cool the airfoil profile, are arranged in a meandering shape, and a coolant can flow through them sequentially. The cooling channels in this case each run parallel to the leading edge. Respectively adjacent cooling channels are separated from one another by ribs, with the ribs ending in a direction-reversal area in which the adjacent cooling channels merge into one another. In order to avoid regions with lower flow rates and in consequence inadequate cooling in these direction-changing areas, in which the cooling air changes its direction, for example, from a flow directed outward to a flow directed inward, direction-changing blades (
FIG. 12 ) are provided at these points. Despite the direction-changing blades, it is, however, still possible for local overheating to occur in the direction-changing area, and this then reduces the life of the turbine blade. - Furthermore, a turbine blade is known from U.S. Pat. No. 5,246,340, which has a plurality of mutually parallel cooling channels in the interior. In this case, the cooling channels are in each case separated by a rib. An opening which connects two adjacent cooling channels is provided in one of the ribs in the area of the blade tip, through which opening a lateral flow can pass for impingement cooling of the blade airfoil tip.
- Furthermore, GB 2 106 996 discloses a turbine blade having an impingement cooling insert in the form of a laminate.
- The object of the present invention is to provide a turbine rotor blade whose life is further improved.
- The object relating to the provision of a turbine rotor blade of this generic type is achieved by designing this turbine rotor blade according to the characterizing part of claim 1. It is proposed that at least one of the ribs—seen from the attachment area to the tip area—has an essentially constant rib thickness and is curved toward the leading edge or trailing edge forming a cooling-channel corner area, which has an acute angle in longitudinal section, in the area of the airfoil tip, and that at least one opening is provided, which is arranged in the curvature, connects two adjacent cooling channels and through which a part of the coolant flow of the cooling channel which is adjacent to the corner area can flow into the acute-angled corner area of the cooling channel.
- The curved rib results in the direction of the cooling air flowing through the cooling channels being changed in a considerably more aerodynamic manner. The direction change is an integral component of the rib, as a result of which the regions with a relatively low flow rate or no flow rate (dead-water regions) in the direction-changing area can be avoided. The flow rate is in consequence kept approximately constant in that cooling channel toward which the rib is curved. However, the curvature of the rib results in an acute-angled corner area in the adjacent cooling channel, in which dead-water regions could now once again occur. In order now to avoid the dead-water regions in the corner area in the adjacent cooling channel, at least one opening is also provided, which is arranged in the curvature and connects the two adjacent cooling channels, and through which a part of the cooling flow can pass over or flow over from one cooling channel into the other cooling channel at an early stage.
- Furthermore, the opening which is arranged in the curved rib can be provided in a particularly simple form. The casting apparatus which is used for casting the turbine rotor blades comprises, in order to produce the cavities through which a coolant can flow, a casting core which has core elements arranged in a meandering shape. In order to support these adjacent core elements, which are arranged in a meandering shape, with respect to one another, a core support can be provided between two adjacent core elements and, after removal of the casting core from the cast, integral turbine blade, leaves behind it the opening within the curved rib. This results in a stabilized casting core which improves the accuracy of the production method.
- Further advantageous refinements of the invention are specified in the dependent claims.
- In one particularly advantageous refinement, the terminating wall, which is likewise frequently subject to local overheating and is also referred to as a crown base, can also be impingement-cooled on the basis of the coolant jet passing through the opening, in such a way that this likewise makes it possible to cool the terminating wall particularly efficiently. To do this, the opening just has to be inclined such that its longitudinal extent is directed at the terminating wall.
- The rib which is adjacent to the trailing edge is preferably curved in the area of the airfoil tip. In this case, the rib—seen from the attachment area to the tip area—is curved toward the leading edge thus making it possible to provide an essentially constant flow cross-sectional area in a part of the direction-changing area between two adjacent coolant channels. This reduces the pressure losses in the coolant. In order to provide a particularly lightweight turbine rotor blade, the rib has an essentially constant rib thickness along its curvature.
- In one advantageous development of the invention, the inner face of the terminating wall is equipped with turbulators, thus making it possible to improve the cooling of the terminating wall or of the crown base in a simple manner. Depending on the configuration of the turbine rotor blades, it is possible for a coolant to flow sequentially or else in parallel through the adjacent cooling channels. If the flow passes in parallel through the coolant channels, care must be taken to ensure that there is an adequate pressure gradient between them, in order to obtain a coolant flow which passes through the opening.
- The invention will be explained with reference to a drawing. The single FIGURE in this case shows a longitudinal section through a turbine rotor blade according to the invention with cooling channels arranged in a meandering shape.
- The FIGURE shows a longitudinal section through a
turbine rotor blade 10 which is produced by a casting method. Theturbine rotor blade 10, which is therefore integral, has anattachment area 12, with a firtree-shaped cross section, with aplatform 14 and anairfoil profile 16 arranged thereon. Theairfoil profile 16, which has an aerodynamically profiled cross section, is formed by a suction-side blade wall and a pressure-side blade wall, which each extend from a leadingedge 18 to atrailing edge 20 and in this case surround a cavity, which is arranged in the interior of theairfoil profile 16 and in which a plurality ofcooling channels edge 18. The mutually adjacent cooling channels 22 are each separated from one another in places by arib airfoil tip 27 which is opposite theattachment area 12. The terminating wall 28 is also referred to as a crown base. - The
turbine rotor blade 10 which is illustrated in the FIGURE has acooling channel 22 a on the leading-edge side to which, on the attachment side, acoolant 29, for example cooling air or cooling vapor, can be supplied. The cooling air that is supplied cools the area of the leadingedge 18 of theairfoil profile 16 using conventional cooling methods, for example convection cooling, impingement cooling and/or film cooling. - The
coolant 29, which can be supplied to the root end of thecooling channel 22 b, flows along thechannel 22 b to theairfoil tip 27, and its direction is then changed in a direction-changingarea 30 in order to reverse its flow direction, specifically toward theattachment area 12. For this purpose, therib 24 c which is adjacent to thetrailing edge 20 is curved in the area of theairfoil tip 27, with a constant rib thickness D. Thecurvature 32 is such that therib 24 c—seen from theattachment area 12 to the tip area 26—is curved toward the leadingedge 18. This results in a part of the direction-changingarea 30 having a cooling channel width B which is approximately constant in comparison to thecooling channel 22 c. This makes it possible to change the direction, in a particularly aerodynamic manner, of thecoolant 29 which flows through thecooling channels - An acute-
angled corner area 34 is formed by thecurvature 32 of therib 24 c, which is adjacent to thetrailing edge 20, in thecooling channel 22 d in the area of theairfoil tip 27. Anopening 40 is provided in therib 24 c in the area of thecurvature 32, through which opening 40 thecoolant 29 which is flowing in the direction-changingarea 30 can partially flow out therefrom and can flow into thecorner area 34 by virtue of the pressure ratio there. If required, a plurality ofopenings 40 may also be provided in order to influence the flow more specifically in thecorner areas 34. Thecorner area 34 can therefore be adequately cooled. Areas with reduced coolant flow rates and in consequence with inadequate cooling are therefore reliably avoided at this point. - The coolant jet passing through the opening 40 impinges on the
inner face 42 of the terminating wall 28 and in this case provides impingement cooling for theairfoil tip 27. In order to further improve the cooling effect of the impingement cooling jet, turbulators 44 can also be provided on theinner face 42 of the terminating wall 28, further enlarging the surface area to be cooled. In addition, thecoolant 29 which flows along theinner face 42 of the terminating wall 28 can further increase the heat transfer coefficient on the cooling-air side by virtue of the stimulation of turbulence, thus making it possible to achieve even better cooling of the crown base. - It is also feasible according to the invention for the
rib 24 a to merge, curved in the direction of the trailingedge 20, into the terminating wall 28 in the tip area 26 of theturbine rotor blade 10, with one or more openings likewise being provided in the curvature. - Overall, the invention specifies a
turbine rotor blade 10 for an axial-flow gas turbine, in particular a stationary gas turbine, which is equipped with anattachment area 12, anairfoil profile 16 and a plurality of cooling channels 22 which are arranged in a meandering shape in the interior of theairfoil profile 16. In order to avoid areas with reduced flow rates ofcoolant 29 in the direction-changingarea 30 or at the channel end, the invention proposes that at least one of the ribs 24 run in a curved form toward the leadingedge 18 or toward the trailingedge 20 in the area of theairfoil tip 27, with the rib thickness D remaining constant, and that at least oneopening 40 be provided in thecurvature 32 of the rib 24, through which opening 40 a portion of thecoolant 29 which is flowing in the direction-changingarea 30 can pass into theadjacent cooling channel 22 d.
Claims (9)
1.-6. (canceled)
7. A cooled turbine rotor blade for a stationary axial-flow gas turbine, comprising:
an airfoil profile formed by a suction-side blade and a pressure-side blade wall;
an airfoil tip;
an attachment area from which the airfoil profile extends as far as the airfoil tip;
a plurality of cooling channels which lie adjacent to one another in an interior of the airfoil profile;
a plurality of ribs;
a terminating wall bounding the plurality of cooling channels at the airfoil tip end; and
an opening arranged in a curvature of one of the plurality of ribs connecting two adjacent cooling channels;
wherein the airfoil profile has a leading edge and a trailing edge,
wherein at least one of the plurality of ribs connects the pressure-side blade wall to the suction-side blade wall and extends from the attachment area to the airfoil tip,
wherein at least one of the plurality of ribs has an essentially constant rib thickness and is curved toward the leading edge or the trailing edge forming a cooling-channel corner area, which has an acute angle in a longitudinal section, in the area of the airfoil tip,
wherein the plurality of cooling channels are at least partially separated from one another by in each case one of the plurality of ribs, and
wherein a part of a coolant flow of one of the plurality of the cooling channels, the cooling channel that is adjacent to a corner area, can flow through the opening into an acute-angled corner area of the adjacent cooling channel.
8. The cooled turbine rotor blade as claimed in claim 7 , wherein the rib adjacent to the trailing edge is curved in the area of the airfoil tip.
9. The cooled turbine rotor blade as claimed in claim 7 , wherein the opening is arranged such that the terminating wall is impingement-cooled.
10. The cooled turbine rotor blade as claimed in claim 7 , wherein an inner face of the terminating wall is equipped with turbulators.
11. The cooled turbine rotor blade as claimed in claim 7 , wherein the coolant flows sequentially through the plurality of cooling channels.
12. The cooled turbine rotor blade as claimed in claim 7 , wherein the coolant flows in parallel through the plurality of cooling channels.
13. The cooled turbine rotor blade as claimed in claim 7 , wherein the cooled turbine rotor blade is cast.
14. The cooled turbine rotor blade as claimed in claim 7 , wherein a second rib which is the second one adjacent to the leading edge, curves in the direction of the trailing edge into the terminating wall in the tip area of the cooled turbine rotor blade with an opening provided in a curvature.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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EP06018490A EP1895096A1 (en) | 2006-09-04 | 2006-09-04 | Cooled turbine rotor blade |
EP06018490.0 | 2006-09-04 | ||
PCT/EP2007/056425 WO2008028702A1 (en) | 2006-09-04 | 2007-06-27 | Cooled turbine rotor blade |
Publications (1)
Publication Number | Publication Date |
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US20090252615A1 true US20090252615A1 (en) | 2009-10-08 |
Family
ID=37718882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/310,690 Abandoned US20090252615A1 (en) | 2006-09-04 | 2007-06-27 | Cooled Turbine Rotor Blade |
Country Status (10)
Country | Link |
---|---|
US (1) | US20090252615A1 (en) |
EP (2) | EP1895096A1 (en) |
JP (1) | JP2010502872A (en) |
CN (1) | CN101512106A (en) |
AT (1) | ATE458126T1 (en) |
DE (1) | DE502007002880D1 (en) |
ES (1) | ES2340338T3 (en) |
PL (1) | PL2059655T3 (en) |
RU (1) | RU2410546C2 (en) |
WO (1) | WO2008028702A1 (en) |
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US20100232975A1 (en) * | 2009-03-10 | 2010-09-16 | Honeywell International Inc. | Turbine blade platform |
US20130048243A1 (en) * | 2011-08-26 | 2013-02-28 | Hs Marston Aerospace Ltd. | Heat exhanger apparatus |
US20180283183A1 (en) * | 2017-04-03 | 2018-10-04 | General Electric Company | Turbine engine component with a core tie hole |
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FR2954798B1 (en) * | 2009-12-31 | 2012-03-30 | Snecma | AUBE WITH INTERNAL VENTILATION |
CN102943693A (en) * | 2012-11-29 | 2013-02-27 | 哈尔滨汽轮机厂有限责任公司 | Efficient cooling turbine movable vane of gas turbine with low-heat and medium-heat values |
WO2015147672A1 (en) | 2014-03-27 | 2015-10-01 | Siemens Aktiengesellschaft | Blade for a gas turbine and method of cooling the blade |
FR3021697B1 (en) * | 2014-05-28 | 2021-09-17 | Snecma | OPTIMIZED COOLING TURBINE BLADE |
FR3021699B1 (en) * | 2014-05-28 | 2019-08-16 | Safran Aircraft Engines | OPTIMIZED COOLING TURBINE BLADE AT ITS LEFT EDGE |
US10508548B2 (en) * | 2017-04-07 | 2019-12-17 | General Electric Company | Turbine engine with a platform cooling circuit |
US11021961B2 (en) * | 2018-12-05 | 2021-06-01 | General Electric Company | Rotor assembly thermal attenuation structure and system |
DE102019108811B4 (en) * | 2019-04-04 | 2024-02-29 | Man Energy Solutions Se | Rotor blade of a turbomachine |
CN110410158B (en) * | 2019-08-16 | 2022-04-12 | 杭州汽轮动力集团有限公司 | Turbine rotor blade of gas turbine |
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US5246340A (en) * | 1991-11-19 | 1993-09-21 | Allied-Signal Inc. | Internally cooled airfoil |
US5462405A (en) * | 1992-11-24 | 1995-10-31 | United Technologies Corporation | Coolable airfoil structure |
US5902093A (en) * | 1997-08-22 | 1999-05-11 | General Electric Company | Crack arresting rotor blade |
US20050084370A1 (en) * | 2003-07-29 | 2005-04-21 | Heinz-Jurgen Gross | Cooled turbine blade |
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JPH11200805A (en) * | 1998-01-14 | 1999-07-27 | Toshiba Corp | Cooling method for structural element, structural element with cooling passage, and gas turbine blade with cooling passage |
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2006
- 2006-09-04 EP EP06018490A patent/EP1895096A1/en not_active Withdrawn
-
2007
- 2007-06-27 US US12/310,690 patent/US20090252615A1/en not_active Abandoned
- 2007-06-27 AT AT07786865T patent/ATE458126T1/en active
- 2007-06-27 PL PL07786865T patent/PL2059655T3/en unknown
- 2007-06-27 ES ES07786865T patent/ES2340338T3/en active Active
- 2007-06-27 EP EP07786865A patent/EP2059655B1/en not_active Not-in-force
- 2007-06-27 DE DE502007002880T patent/DE502007002880D1/en active Active
- 2007-06-27 JP JP2009525997A patent/JP2010502872A/en active Pending
- 2007-06-27 RU RU2009112405/06A patent/RU2410546C2/en not_active IP Right Cessation
- 2007-06-27 CN CNA200780032783XA patent/CN101512106A/en active Pending
- 2007-06-27 WO PCT/EP2007/056425 patent/WO2008028702A1/en active Application Filing
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US5246340A (en) * | 1991-11-19 | 1993-09-21 | Allied-Signal Inc. | Internally cooled airfoil |
US5462405A (en) * | 1992-11-24 | 1995-10-31 | United Technologies Corporation | Coolable airfoil structure |
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US20050084370A1 (en) * | 2003-07-29 | 2005-04-21 | Heinz-Jurgen Gross | Cooled turbine blade |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100232975A1 (en) * | 2009-03-10 | 2010-09-16 | Honeywell International Inc. | Turbine blade platform |
US8147197B2 (en) * | 2009-03-10 | 2012-04-03 | Honeywell International, Inc. | Turbine blade platform |
US20130048243A1 (en) * | 2011-08-26 | 2013-02-28 | Hs Marston Aerospace Ltd. | Heat exhanger apparatus |
US9260191B2 (en) * | 2011-08-26 | 2016-02-16 | Hs Marston Aerospace Ltd. | Heat exhanger apparatus including heat transfer surfaces |
US20180283183A1 (en) * | 2017-04-03 | 2018-10-04 | General Electric Company | Turbine engine component with a core tie hole |
US11021967B2 (en) * | 2017-04-03 | 2021-06-01 | General Electric Company | Turbine engine component with a core tie hole |
Also Published As
Publication number | Publication date |
---|---|
RU2009112405A (en) | 2010-10-20 |
EP2059655B1 (en) | 2010-02-17 |
CN101512106A (en) | 2009-08-19 |
WO2008028702A1 (en) | 2008-03-13 |
ES2340338T3 (en) | 2010-06-01 |
ATE458126T1 (en) | 2010-03-15 |
EP2059655A1 (en) | 2009-05-20 |
DE502007002880D1 (en) | 2010-04-01 |
EP1895096A1 (en) | 2008-03-05 |
JP2010502872A (en) | 2010-01-28 |
RU2410546C2 (en) | 2011-01-27 |
PL2059655T3 (en) | 2010-07-30 |
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