EP1266128B1 - Versteifungs- und kühlstruktur einer turbinenschaufel - Google Patents
Versteifungs- und kühlstruktur einer turbinenschaufel Download PDFInfo
- Publication number
- EP1266128B1 EP1266128B1 EP01927732A EP01927732A EP1266128B1 EP 1266128 B1 EP1266128 B1 EP 1266128B1 EP 01927732 A EP01927732 A EP 01927732A EP 01927732 A EP01927732 A EP 01927732A EP 1266128 B1 EP1266128 B1 EP 1266128B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- turbulators
- vane
- wall
- vane according
- 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.)
- Expired - Lifetime
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
- F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
-
- 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
-
- 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
- F05D2250/20—Three-dimensional
- F05D2250/28—Three-dimensional patterned
-
- 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
-
- 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
- F05D2260/2214—Improvement of heat transfer by increasing the heat transfer surface
- F05D2260/22141—Improvement of heat transfer by increasing the heat transfer surface using fins or ribs
Definitions
- the present invention relates to a blade, in particular a turbine blade with at least one channel, the bounded by walls and acted upon by a cooling fluid is, wherein on at least one wall several turbulators for Improvement of the heat exchange between the wall and the Cooling fluid are provided.
- Such a turbine blade is for example from the EP 0 758 932 B1.
- This known turbine blade is hollow and has four channels.
- the channels will be each of the two outer walls of the turbine blade and Partitions limited and for cooling with a cooling fluid flows through.
- To improve the heat exchange between the outer walls and the cooling fluid are the outer walls with Provided turbulators.
- the turbulators serve only to improve the heat exchange.
- the in operation occurring loads on the turbine blade almost exclusively absorbed by the exterior walls, the must therefore be made relatively thick.
- the load must continue the wall thickness of the outer walls increase.
- this increase in wall thickness decreases the cooling efficiency and thus the overall efficiency.
- Object of the present invention is therefore a blade provide a higher load capacity without magnification the wall thickness or a reduction in the Wall thickness allows for the same load capacity.
- the turbulators for stiffening used on the wall and merge into each other hereby will be a substantial increase in stiffness without additional Material and without increasing the wall thickness reached.
- a good heat exchange between the walls and the cooling fluid This results in a high cooling efficiency and high overall efficiency.
- the stiffening of the wall is not just in the area of one single turbulator. It is rather by the Connecting the turbulators together a large area Stiffening provided.
- the turbulators are straight.
- the Use of straight turbulators allows high rigidity with simple production.
- all include Turbulators with a longitudinal axis of the blade the same angle one. This results in a symmetrical arrangement of the turbulators, the loads from all directions evenly can record.
- turbulators a right angle.
- a can Sharp or obtuse angle can be selected.
- an advantageous second embodiment includes a first group of turbulators with a longitudinal axis of the blade a first angle and a second group of turbulators with the longitudinal axis of the blade a second angle.
- the two groups of turbulators thus have different Inclinations towards the longitudinal axis of the blade.
- the rigidity of the blade therefore depends on the direction of attack the burden. Due to the different inclination Thus, a specific adaptation of the stiffness in different Directions are achieved.
- the turbulators are arranged such that they beside and overlying recesses in the form of Forming polygons, in particular squares, diamonds or hexagons.
- the inside of the wall is made with a honeycomb structure Mistake.
- the individual polygons or honeycombs form each a closed, highly loadable cross-section and support off each other. It can be a significant increase to achieve rigidity.
- the wall thickness of the wall reduced at least in the area between the turbulators. This reduction in wall thickness is thereby made possible that the turbulators effect a stiffening of the wall. By reducing the wall thickness becomes the cooling efficiency increased again.
- the turbulators can be advantageous here used in casting the blade as metal feed channels become. The honeycomb structure is therefore easy to produce.
- the blade several with different arrangements of turbulators provided sections. Through these different arrangements settles in the individual sections of the blade influence the rigidity in a targeted manner. It results in an optimal Adapting to the particular section of the Shovel present loads.
- the sections are mutually spaced. This will be a simple change between different arrangements of turbulators allows.
- the sections go into each other. It results in a continuous Increasing the rigidity of the blade.
- the blade according to the invention can be used as a vane or as Blade of a rotary machine can be formed.
- FIG. 1 shows a longitudinal section through a rotary machine in the form of a turbine 10 with a housing 11 and a rotor 12.
- the housing 11 is provided with guide vanes 13 and the rotor 12 provided with blades 14.
- the turbine 10 flows through a fluid according to arrow 15, the on the guide vanes 13 and blades 14 flows along and the rotor 12 is rotated about an axis 16.
- the temperature of the fluid is in many applications, in particular in the area of the first blade row (in FIG. 1) shown on the left), relatively high. It is therefore a cooling the guide vanes 13 and blades 14 are provided.
- the Flow of the cooling fluid is schematically indicated by the arrows 17, 18th indicated. In particular, air can be used as the cooling fluid become.
- Figure 2 shows schematically a broken-away view of a Guide vane 13.
- the vane 13 has curved outer walls 19, 20 on.
- the lying between the outer walls 19, 20 Interior is divided into two partitions 21 in total divided into three channels 22.
- the channels 22 subjected to a cooling fluid.
- the outer walls 19,20 with several turbulators 23 provided.
- the turbulators 23 in Figure 2 are strong shown in simplified form. However, it is clear that the Turbulators 23 merge into one another and a honeycomb structure form. This honeycomb structure causes a stiffening of the outer walls 19, 20.
- FIG 3 shows an enlarged view of the detail X. from Figure 2.
- the turbulators 23 are straight and formed go into each other. In the illustrated embodiment is limited by four turbulators each a recess 24.
- the wall thickness d of the outer wall 19 decreases starting from the turbulators 23 kontiunierlich to Center of the recess 24. This reduction in the wall thickness d is thereby made possible that the turbulators 23 to each other support and thereby the rigidity of the vane 13 increase significantly.
- the turbulators 23 serve simultaneously as impact protection.
- the turbulators 23 are approximately triangular in cross section designed and rejuvenated starting from the outer wall 19. You can therefore when pouring the vane 13 than Serve metal feed channels.
- the guide vane according to the invention 13 is thus easy to manufacture.
- FIGS. 4 to 6 show a schematic plan view the inside of the outer wall 19 in three different Configurations.
- All turbulators 23a, 23b the same angle ⁇ , ⁇ with a longitudinal axis 25 of the vane 13 a.
- the turbulators 23a, 23b close together a right angle 26 a.
- the recesses 24 delimited by the turbulators 23a, 23b thus form squares.
- a turbulator 23a, 23b extends between each two Touch points 31. In the area of touch points 31 go the Turbulators 23a, 23b into each other. By use straight turbulators 23a, 23b, the production is simplified. Next results in a high rigidity.
- a first one closes Group of turbulators 23 a a first angle ⁇ with the Longitudinal axis 25, while a second group of turbulators 23b includes a second angle ⁇ with the longitudinal axis 25.
- the angle 26 between the turbulators is in this Design greater than 90 °. It follows accordingly a recess 24 in the form of a rhombus.
- each turbulators each form 23 a recess 24 in the form of a hexagon. It This results in a honeycomb structure that reduces the rigidity of the vane 13 substantially increased.
- turbulators 23 are used. Be beneficial the turbulators 23 arranged such that in the figures 4 to 6 shown recesses 24 arise. These recesses 24 have a closed plan view Cross-section and therefore a high rigidity.
- the turbulators 23 may also be arranged in the form of a V or X. become.
- the turbulators 23 also at a Blade 14 may be provided.
- Figure 7 is schematic such a blade 14 is shown, the more with different arrangements of turbulators 23 provided Sections 28, 29, 30 has.
- the arrangement of the section 28 corresponds to the representation according to FIG. 4, while FIG the sections 29, 30 formed according to Figures 5 and 6 are.
- the individual sections 28, 29, 30 are mutually spaced. In the area between sections 28, 29, 30 may cross-sectional or shape changes of the blade 14 be made with low production costs.
- To achieve the required rigidity is the Wall thickness d of the outer walls 19, 20 in these transition areas increased accordingly.
- the use of different Arrangements of turbulators 23 allows a targeted influence the stiffness of the blade 14 in the individual Sections 28, 29, 30. This results in an optimal Adaptation to different boundary conditions along the Longitudinal axis 25.
- the sections 28, 29, 30 can also merge into one another, as shown schematically on the basis of a vane 13 in Figure 8.
- the turbulators 23 of the individual sections 28, 29, 30 go here in touch points not shown into each other. This results in a continuous Stiffening of the vane 13 along its longitudinal axis 25th
- the present invention enables an increase in rigidity through a targeted arrangement of improvement heat exchangers provided turbulators. At the same Load can reduce the wall thickness d of the outer walls 19, 20 become. By this reduction in wall thickness is the Cooling efficiency increased, so that an overall higher Overall efficiency of the turbine 10 results.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
- FIG 1
- einen Längsschnitt durch eine Rotationsmaschine;
- FIG 2
- eine perspektivische, aufgebrochene Darstellung einer Schaufel;
- FIG 3
- eine vergrößerte Darstellung der Einzelheit X aus Figur 2;
- FIG 4
- eine Draufsicht auf die Innenseite einer Außenwand der Schaufel in erster Ausgestaltung;
- FIG 5
- eine Ansicht ähnlich Figur 4 in zweiter Ausgestaltung;
- FIG 6
- eine Ansicht ähnlich Figur 4 in dritter Ausgestaltung;
- FIG 7
- eine schematische Darstellung einer Laufschaufel; und
- FIG 8
- eine schematische Darstellung einer Leitschaufel.
Claims (11)
- Schaufel, insbesondere Turbinenschaufel (13; 14), mit mindestens einem Kanal (22), der von Wänden (19, 20, 21) begrenzt und mit einem Kühlfluid beaufschlagbar ist, wobei an mindestens einer Wand (19; 20) mehrere Turbolatoren (23) zur Verbesserung des Wärmeaustausches zwischen der Wand (19; 20) und dem Kühlfluid vorgesehen sind,
dadurch gekennzeichnet, daß die Turbulatoren (23) zur Versteifung der Wand (19; 20) dienen und ineinander übergehen. - Schaufel nach Anspruch 1,
dadurch gekennzeichnet, daß die Turbulatoren (23) gerade ausgebildet sind. - Schaufel nach Anspruch 2,
dadurch gekennzeichnet, daß die sämtliche Turbulatoren (23a, 23 b) mit einer Längsachse (25) der Schaufel (13; 14) denselben Winkel (α; β) einschließen. - Schaufel nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß die Turbulatoren (23a, 23b) einen rechten Winkel (26) einschließen. - Schaufel nach Anspruch 2,
dadurch gekennzeichnet, daß eine erste Gruppe von Turbulatoren (23a) mit einer Längsachse (25) der Schaufel (13; 14) einen ersten Winkel (α) und eine zweite Gruppe von Turbulatoren (23b) mit der Längsachse (25) der Schaufel (13; 14) einen zweiten Winkel (β) einschließt. - Schaufel nach einem der Ansprüche 2 bis 5,
dadurch gekennzeichnet, daß die Turbulatoren (23) derart angeordnet sind, daß sie neben- und übereinanderliegende Ausnehmungen in Form von Vielecken, insbesondere Quadraten, Rauten oder Sechsecken, bilden. - Schaufel nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß die Wandstärke (d) der Wand (19; 20) zumindest im Bereich zwischen den Turbulatoren (23) verringert ist. - Schaufel nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, daß die Schaufel (13; 14) mehrere mit unterschiedlichen Anordnungen von Turbulatoren (23) versehene Abschnitte (28, 29, 30) aufweist. - Schaufel nach Anspruch 8,
dadurch gekennzeichnet, daß die Abschnitte (28, 29, 30) zueinander beabstandet sind. - Schaufel nach Anspruch 8,
dadurch gekennzeichnet, daß die Abschnitte (28, 29, 30) ineinander übergehen. - Schaufel nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, daß die Schaufel als Leitschaufel (13) oder als Laufschaufel (14) einer Rotationsmaschine (10) ausgebildet ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01927732A EP1266128B1 (de) | 2000-03-22 | 2001-03-15 | Versteifungs- und kühlstruktur einer turbinenschaufel |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00106246 | 2000-03-22 | ||
EP00106246 | 2000-03-22 | ||
PCT/EP2001/002982 WO2001071164A1 (de) | 2000-03-22 | 2001-03-15 | Versteifungs- und kühlstruktur einer turbinenschaufel |
EP01927732A EP1266128B1 (de) | 2000-03-22 | 2001-03-15 | Versteifungs- und kühlstruktur einer turbinenschaufel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1266128A1 EP1266128A1 (de) | 2002-12-18 |
EP1266128B1 true EP1266128B1 (de) | 2005-01-12 |
Family
ID=8168202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01927732A Expired - Lifetime EP1266128B1 (de) | 2000-03-22 | 2001-03-15 | Versteifungs- und kühlstruktur einer turbinenschaufel |
Country Status (6)
Country | Link |
---|---|
US (1) | US20030049125A1 (de) |
EP (1) | EP1266128B1 (de) |
JP (1) | JP4610836B2 (de) |
CN (1) | CN100376766C (de) |
DE (1) | DE50105063D1 (de) |
WO (1) | WO2001071164A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2870560B1 (fr) * | 2004-05-18 | 2006-08-25 | Snecma Moteurs Sa | Circuit de refroidissement a cavite a rapport de forme eleve pour aube de turbine a gaz |
JP2007162559A (ja) * | 2005-12-13 | 2007-06-28 | Sanden Corp | 遠心式多翼送風機 |
US7513745B2 (en) | 2006-03-24 | 2009-04-07 | United Technologies Corporation | Advanced turbulator arrangements for microcircuits |
JP4957131B2 (ja) * | 2006-09-06 | 2012-06-20 | 株式会社Ihi | 冷却構造 |
US7967559B2 (en) * | 2007-05-30 | 2011-06-28 | General Electric Company | Stator-rotor assembly having surface feature for enhanced containment of gas flow and related processes |
US7857588B2 (en) * | 2007-07-06 | 2010-12-28 | United Technologies Corporation | Reinforced airfoils |
WO2009122474A1 (ja) * | 2008-03-31 | 2009-10-08 | 川崎重工業株式会社 | ガスタービン燃焼器の冷却構造 |
US8167560B2 (en) * | 2009-03-03 | 2012-05-01 | Siemens Energy, Inc. | Turbine airfoil with an internal cooling system having enhanced vortex forming turbulators |
US8713909B2 (en) * | 2009-03-04 | 2014-05-06 | United Technologies Corporation | Elimination of unfavorable outflow margin |
US10626729B2 (en) | 2013-03-14 | 2020-04-21 | United Technologies Corporation | Obtuse angle chevron trip strip |
JP6356801B2 (ja) * | 2013-11-14 | 2018-07-11 | ゼネラル・エレクトリック・カンパニイ | 負のcte特徴を有するタービン部品 |
JP6245740B2 (ja) * | 2013-11-20 | 2017-12-13 | 三菱日立パワーシステムズ株式会社 | ガスタービン翼 |
CN112879104B (zh) * | 2021-04-28 | 2021-08-03 | 中国航发四川燃气涡轮研究院 | 一种雪花状涡轮叶片冷却结构 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3171631A (en) * | 1962-12-05 | 1965-03-02 | Gen Motors Corp | Turbine blade |
GB1257041A (de) * | 1968-03-27 | 1971-12-15 | ||
DE1801475B2 (de) * | 1968-10-05 | 1971-08-12 | Daimler Benz Ag, 7000 Stuttgart | Luftgekuehlte turbinenschaufel |
FR2698126B1 (fr) * | 1992-11-18 | 1994-12-16 | Snecma | Aube creuse de soufflante ou compresseur de turbomachine. |
DE4430302A1 (de) * | 1994-08-26 | 1996-02-29 | Abb Management Ag | Prallgekühltes Wandteil |
US5468125A (en) * | 1994-12-20 | 1995-11-21 | Alliedsignal Inc. | Turbine blade with improved heat transfer surface |
JP3396360B2 (ja) * | 1996-01-12 | 2003-04-14 | 三菱重工業株式会社 | ガスタービン冷却動翼 |
DE19634238A1 (de) * | 1996-08-23 | 1998-02-26 | Asea Brown Boveri | Kühlbare Schaufel |
DE59709275D1 (de) * | 1997-07-14 | 2003-03-13 | Alstom Switzerland Ltd | Kühlsystem für den Hinterkantenbereich einer hohlen Gasturbinenschaufel |
DE59709158D1 (de) * | 1997-09-30 | 2003-02-20 | Alstom Switzerland Ltd | Prallanordnung für ein konvektives Kühl- oder Heizverfahren |
SE512384C2 (sv) * | 1998-05-25 | 2000-03-06 | Abb Ab | Komponent för en gasturbin |
-
2001
- 2001-03-15 EP EP01927732A patent/EP1266128B1/de not_active Expired - Lifetime
- 2001-03-15 JP JP2001569125A patent/JP4610836B2/ja not_active Expired - Fee Related
- 2001-03-15 DE DE50105063T patent/DE50105063D1/de not_active Expired - Lifetime
- 2001-03-15 WO PCT/EP2001/002982 patent/WO2001071164A1/de active IP Right Grant
- 2001-03-15 CN CNB018067913A patent/CN100376766C/zh not_active Expired - Fee Related
- 2001-03-15 US US10/221,309 patent/US20030049125A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20030049125A1 (en) | 2003-03-13 |
EP1266128A1 (de) | 2002-12-18 |
DE50105063D1 (de) | 2005-02-17 |
JP2003534481A (ja) | 2003-11-18 |
WO2001071164A1 (de) | 2001-09-27 |
CN100376766C (zh) | 2008-03-26 |
JP4610836B2 (ja) | 2011-01-12 |
CN1606655A (zh) | 2005-04-13 |
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