EP2126286A1 - Aube de turbine - Google Patents

Aube de turbine

Info

Publication number
EP2126286A1
EP2126286A1 EP08701454A EP08701454A EP2126286A1 EP 2126286 A1 EP2126286 A1 EP 2126286A1 EP 08701454 A EP08701454 A EP 08701454A EP 08701454 A EP08701454 A EP 08701454A EP 2126286 A1 EP2126286 A1 EP 2126286A1
Authority
EP
European Patent Office
Prior art keywords
support structure
turbine blade
sheath
blade
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.)
Withdrawn
Application number
EP08701454A
Other languages
German (de)
English (en)
Inventor
Fathi Ahmad
Scarlett Fajardo-Reina
Markus Gill
Stefan Werner Kiliani
Silvio-Ulrich Martin
Ralf Müsgen
Oliver Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP08701454A priority Critical patent/EP2126286A1/fr
Publication of EP2126286A1 publication Critical patent/EP2126286A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F01D5/181—Blades having a closed internal cavity containing a cooling medium, e.g. sodium
    • 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
    • F01D5/182—Transpiration 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
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
    • F05D2230/237—Brazing
    • 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
    • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
    • F05D2230/238—Soldering
    • 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
    • F05D2240/24—Rotors for turbines
    • F05D2240/241—Rotors for turbines of impulse type
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49336—Blade making
    • Y10T29/49339—Hollow blade
    • Y10T29/49341—Hollow blade with cooling passage

Definitions

  • the invention relates to a turbine blade according to the
  • Turbine blades in particular turbine blades for gas turbines, are exposed to high temperatures during operation, which may also exceed the limit of material stress. This applies in particular to the regions in the vicinity of the flow inlet edge of the turbine blades.
  • turbine blades In order to use turbine blades even at high temperatures, it has long been known to cool turbine blades suitable, so that they have a higher temperature resistance, the importance of blade cooling, especially in gas turbines due to the increasing gas turbine inlet temperatures steadily increases. With turbine blades, which have a higher temperature resistance, higher energy efficiencies can be achieved in particular.
  • Known types of cooling include convection cooling, impingement cooling, and film cooling, and convection cooling is arguably the most common type of blade cooling, with cooling air passing through channels in the interior of the blade
  • impingement cooling a stream of cooling air impinges on the surface of the blade from the inside, thus enabling a very good cooling effect at the point of impact, but only at the narrow area of the point of impact and the surrounding area
  • This type of cooling is therefore mostly used for cooling the flow inlet edge of a turbine blade, which is exposed locally to high temperature loads. Fei led to the outside.
  • This cooling air flows around the turbine blade and forms an insulating layer between the hot process gas and the blade surface.
  • the types of cooling described are suitably combined depending on the application in order to achieve the most effective blade cooling possible.
  • a collision cooled leading edge of a turbine blade from US 6,238,182 is known.
  • the turbine blade comprises a cast airfoil profile with a comparatively thick profile wall in which a thin-walled impingement cooling insert is inserted.
  • the impingement cooling insert is supported by a plurality of, in each case pointed, ribs on these opposite ribs, which in turn are provided on the inner sides of the profile wall.
  • the rib pairs formed in this way are soldered together, so that enclose this chamber.
  • the blade is cast including a shroud, for example in the form of a shovel, and cooling channels. Additional coatings are applied by coating methods.
  • the production of the cooling channels formed in known turbine blades by means of a casting process is very complicated and cost-intensive.
  • the sheathing preferably in the form of a blade shroud, is used only to transmit the aerodynamic forces in the case of flow around the turbine blade into an underlying support structure via the spacer elements according to the invention.
  • the support structure essentially carries the sheath and takes over the sheath and the spacer elements transmitted
  • the support structure also assumes the centrifugal force effect by rotation.
  • the invention differs from the already known turbine blade of US Pat. No. 6,238,182, in which only the airfoil profile itself is designed to be load-bearing and the insert assumes only a function which ensures distance-baffling for the baffle cooling.
  • the transmission of the forces takes place via the multiplicity of areally arranged spacer elements which in each case selectively connect the sheathing to the carrier structure. Due to the planar arrangement of the spacer elements, the sheath can be supported at a plurality of points, which allows a particularly thin and therefore particularly coolable sheath. According to the invention, the intermediate space forming through the spacing can be traversed with a cooling medium, preferably in the form of a gas or fluid, in order to achieve effective cooling of the jacket by convection cooling when using the turbine blade. Heat energy of the sheath is transferred according to the invention only via the spacer elements in the support structure. This has the advantage that excessive heating of the support structure as a result of the heating of the sheath is avoided according to the invention.
  • the turbine blade according to the invention can be made simpler in comparison to known turbine blades, since no casting mold has to be provided that is correspondingly elaborately designed to form cooling channels. It is only necessary to create a connection between the support structure and the sheathing over the spacer elements according to the invention, in order to form a flow-through cooling channel in the form of the intermediate space according to the invention.
  • a turbine blade designed for convention cooling which, in addition to a simple production, in particular has the advantage of significantly improving the heat dissipation and heat transfer to the cooling medium, also through the plurality of surfaces
  • the spacer elements are distributed uniformly between the sheathing and the support structure.
  • the spacer elements are each formed in the form of a solder ball, which are connected by soldering, in particular soldering, with the support structure and the sheath. According to the invention, therefore, a connection of the casing with the carrier structure by soldering, preferably at individual points.
  • the solder consists according to the invention of small solder balls that do not melt completely during the soldering process, but only partially.
  • solder balls are often referred to in electrical engineering by the term "ball grid.”
  • the solder balls form a large surface so that heat can be transferred directly to the cooling medium flowing through the intermediate space.
  • the surface area of the spacer elements that is to be surrounded by coolant also increases overall, which on the one hand reduces cooling and on the other hand Connection of the sheathing to the support structure improved. The better connection in turn allows a stiffer or thinner sheath.
  • the intermediate space between the casing and the planar carrier structure is formed in the manner of a gap, wherein the latter - seen in cross-section from the flow inlet edge to the trailing edge - has a substantially constant gap dimension.
  • this makes it possible to achieve a particularly low-loss flow through the gap with cooling air for convective cooling of the sheath.
  • the turbine blade has a blade root, which is designed in such a way that the intermediate space can be flowed through by cooling medium, starting from the blade root.
  • the invention further relates to a method for producing a turbine blade according to the invention, which has a carrier structure and a casing surrounding the carrier structure, which is connected to the carrier structure at a distance, in which the casing is soldered to the carrier structure at at least one point of the carrier structure the sheath spaced to connect to the support structure, wherein the sheath is selectively connected to the support structure by the spacer element and the spacers are arranged distributed over a surface.
  • FIG. 2 a perspective partial view of a casing of the turbine blade in the form of a blade skirt together with connecting solder balls
  • FIG 3 shows an enlarged sectional view of a connection between the casing and the carrier structure by means of solder balls according to the invention.
  • FIG. 1 shows a sectional view of a turbine blade 10 according to the invention with a flow inlet edge that is rounded in cross section and an acute flow trailing edge.
  • the turbine blade 10 comprises a solid or hollow support structure 12, a sheath in Shape of a thin-walled blade skirt 14, which is connected by solder balls 16 with the support structure 12 spaced to form a gap 18 in the form of a narrow gap, which is traversed by a cooling medium.
  • the support structure 12 in the region which lies opposite the jacket 14 on the inside is formed in a planar manner and thereby curved in accordance with the aerodynamically profiled shape of the jacket 14.
  • the vane shirt 14 serves to transmit the aerodynamic forces forming on the flow of the vane neck 14 to the carrier structure 12.
  • the support structure 12 is designed such that it can forward the transmitted forces to a blade carrier, not shown, to which the support structure 12 is attached. The connection over the multiplicity of
  • Lotkugeln 16 which are referred to in the jargon of electrical engineering as a "ball grid" is carried out by appropriate soldering at individual points of the support structure 12 and the blade 14, the solder balls 16 do not completely melt during the soldering process.
  • the blade 14 When flowing through the gap 18 with a cooling medium, the blade 14 can be effectively convectively cooled by heat energy of the blade 14 is dissipated via the flowing cooling medium. Since heat transfer between the blade skirt 14 and the support structure 12 can only take place via the solder balls 16, the support structure 12 is only slightly heated by a heated blade skirt 14. Most of the heat energy of the blade 14 is dissipated via the cooling medium, wherein the solder balls 16 form a large surface, which transfers heat energy directly to the cooling medium.
  • FIG. 2 shows a casing of the turbine blade 10 in the form of a blade skirt 14 together with the connecting blades
  • solder balls 16 are provided only at individual, spaced-apart locations in order to ensure the most effective connection between the Sustruk-
  • the solder balls 16 are arranged flat in the manner of a uniform grid between the casing 14 and the support structure 12, whereby a uniform application of force from the force acting on the casing 14 Flow forces in the support structure 12 can take place.
  • the forces to be transmitted by each solder ball 16 can be comparatively small.
  • solder balls 12 can be made comparatively small.
  • FIG. 3 shows an enlarged sectional view of a connection between the blade 14 and the blade

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne une aube de turbine (10) comprenant une structure support (12) et une enveloppe (14) entourant la structure support (12), ladite enveloppe étant reliée à distance avec la structure support (12) au moyen d'au moins un espaceur (16), par exemple, des globules de brasage, en vue de former entre la structure support (12) et l'enveloppe (14), un espace intermédiaire (18) qui est parcouru par un milieu réfrigérant. L'invention concerne en outre un procédé de production d'une aube de turbine (10) présentant une structure support (12) et une enveloppe (14) entourant la structure support (12) enveloppe qui est reliée à distance avec la structure support (12), procédé caractérisé en ce que l'enveloppe (14) est soudée par brasage en au moins un point de la structure support (12), sur ladite structure support (12), afin de relier l'enveloppe (14), à distance, avec cette structure support (12).
EP08701454A 2007-02-01 2008-01-14 Aube de turbine Withdrawn EP2126286A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08701454A EP2126286A1 (fr) 2007-02-01 2008-01-14 Aube de turbine

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07002215A EP1953342A1 (fr) 2007-02-01 2007-02-01 Aube de turbine
EP08701454A EP2126286A1 (fr) 2007-02-01 2008-01-14 Aube de turbine
PCT/EP2008/050325 WO2008092725A1 (fr) 2007-02-01 2008-01-14 Aube de turbine

Publications (1)

Publication Number Publication Date
EP2126286A1 true EP2126286A1 (fr) 2009-12-02

Family

ID=38193432

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07002215A Withdrawn EP1953342A1 (fr) 2007-02-01 2007-02-01 Aube de turbine
EP08701454A Withdrawn EP2126286A1 (fr) 2007-02-01 2008-01-14 Aube de turbine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP07002215A Withdrawn EP1953342A1 (fr) 2007-02-01 2007-02-01 Aube de turbine

Country Status (6)

Country Link
US (1) US8267659B2 (fr)
EP (2) EP1953342A1 (fr)
JP (1) JP4959811B2 (fr)
CN (1) CN101600853B (fr)
RU (1) RU2430240C2 (fr)
WO (1) WO2008092725A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7871246B2 (en) * 2007-02-15 2011-01-18 Siemens Energy, Inc. Airfoil for a gas turbine
US8753083B2 (en) * 2011-01-14 2014-06-17 General Electric Company Curved cooling passages for a turbine component
US8875870B2 (en) 2011-03-31 2014-11-04 Benetech, Inc. Conveyor belt cleaner scraper blade and assembly
CN103061827B (zh) * 2013-01-06 2015-05-06 北京航空航天大学 一种混合型陶瓷基复合材料涡轮导向器叶片
EP3075531B1 (fr) 2015-03-31 2024-03-20 Ansaldo Energia IP UK Limited Dispositif sandwich avec panneaux céramiques et feutres en céramique
EP3115199A1 (fr) 2015-07-10 2017-01-11 General Electric Technology GmbH Fabrication de panneaux simples ou multiples
CN105397223A (zh) * 2015-12-25 2016-03-16 中国航空工业集团公司沈阳发动机设计研究所 一种吸附式空心静子叶片的制造方法
US10436048B2 (en) * 2016-08-12 2019-10-08 General Electric Comapny Systems for removing heat from turbine components
US11333022B2 (en) * 2019-08-06 2022-05-17 General Electric Company Airfoil with thermally conductive pins
US11203947B2 (en) * 2020-05-08 2021-12-21 Raytheon Technologies Corporation Airfoil having internally cooled wall with liner and shell
CN112610285B (zh) * 2020-12-18 2021-09-14 武汉大学 一种仿金刚石晶胞拓扑的汽轮机空心静叶强化除湿结构及汽轮机除湿装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2642263A (en) * 1951-01-05 1953-06-16 Westinghouse Electric Corp Blade apparatus
US2801073A (en) * 1952-06-30 1957-07-30 United Aircraft Corp Hollow sheet metal blade or vane construction
US2906495A (en) * 1955-04-29 1959-09-29 Eugene F Schum Turbine blade with corrugated strut
US3700348A (en) * 1968-08-13 1972-10-24 Gen Electric Turbomachinery blade structure
US3806276A (en) * 1972-08-30 1974-04-23 Gen Motors Corp Cooled turbine blade
JPS52139903A (en) * 1976-05-18 1977-11-22 Toyo Electric Mfg Co Ltd Commutator manufacturing method
JPS55109704A (en) * 1979-02-19 1980-08-23 Hitachi Ltd Gas-turbine blade capable of being cooled
US5328331A (en) * 1993-06-28 1994-07-12 General Electric Company Turbine airfoil with double shell outer wall
JP3110227B2 (ja) * 1993-11-22 2000-11-20 株式会社東芝 タービン冷却翼
DE19737845C2 (de) * 1997-08-29 1999-12-02 Siemens Ag Verfahren zum Herstellen einer Gasturbinenschaufel, sowie nach dem Verfahren hergestellte Gasturbinenschaufel
US6237344B1 (en) 1998-07-20 2001-05-29 General Electric Company Dimpled impingement baffle
RU2154169C2 (ru) 1998-11-10 2000-08-10 Ао "К.Т.С." Перо оболочковой турбинной лопатки "флокс 2"
US6238182B1 (en) * 1999-02-19 2001-05-29 Meyer Tool, Inc. Joint for a turbine component
US6508000B2 (en) 2001-02-08 2003-01-21 Siemens Westinghouse Power Corporation Transient liquid phase bonding repair for advanced turbine blades and vanes
EP1533481A3 (fr) * 2003-11-19 2009-11-04 General Electric Company Composant pour guider des gaz chauds avec une structure de refroidissement réticulée comprenant des bosses
JP4191578B2 (ja) * 2003-11-21 2008-12-03 三菱重工業株式会社 ガスタービンエンジンのタービン冷却翼

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008092725A1 *

Also Published As

Publication number Publication date
US8267659B2 (en) 2012-09-18
JP2010518300A (ja) 2010-05-27
RU2430240C2 (ru) 2011-09-27
CN101600853B (zh) 2013-09-11
JP4959811B2 (ja) 2012-06-27
CN101600853A (zh) 2009-12-09
RU2009132675A (ru) 2011-03-10
EP1953342A1 (fr) 2008-08-06
WO2008092725A1 (fr) 2008-08-07
US20090324421A1 (en) 2009-12-31

Similar Documents

Publication Publication Date Title
EP2126286A1 (fr) Aube de turbine
DE3345263C2 (de) Gekühlte Turbinenschaufel
DE4441507C3 (de) Gekühlte Turbinenschaufel
DE60018817T2 (de) Gekühlte Gasturbinenschaufel
DE4116886C2 (de) Gelochtes Blech als Hitzeschild
EP1921268A1 (fr) Aube de turbine
DE60017437T2 (de) Rippen zur erhöhung der wärmeübertragung einer mittels kühlluft innengekühlten turbinenschaufel
DE3211139C1 (de) Axialturbinenschaufel,insbesondere Axialturbinenlaufschaufel fuer Gasturbinentriebwerke
DE19813173C2 (de) Gekühlte Gasturbinen-Laufschaufel
DE60015233T2 (de) Turbinenschaufel mit interner Kühlung
EP2828484B1 (fr) Aube de turbine
EP1188500B1 (fr) Dispositif et procédé de production d'aube de turbine et aube de turbine
DE69811624T2 (de) Gasturbinenrotorschaufel
EP2087207B1 (fr) Aube de turbine
DE2414397A1 (de) Kuehlkanalaufbau fuer fluessigkeitsgekuehlte turbinenschaufeln
DE102014100482A1 (de) Heißgaspfadbauteil für Turbinensystem
EP3658751B1 (fr) Aubage d'aube de turbine
EP0964981B1 (fr) Aube de turbine et son utilisation dans un systeme de turbine a gaz
EP1668236B1 (fr) Chambre de combustion comprenant un dispositif de refroidissement, et procede de production de cette chambre de combustion
EP3456923A1 (fr) Aube d'une turbomachine pourvue de canal de refroidissement et corps de refoulement agencé dans une telle aube d'une turbomachine ainsi que procédé de fabrication
EP1947295A1 (fr) Corps d'insertion d'une aube de turbine axiale
EP3762586B1 (fr) Paroi de composant à gaz chaud
DE2825801A1 (de) Fluessigkeitsgekuehlte turbinenschaufel mit verbessertem waermeuebertragungsvermoegen
EP3232001A1 (fr) Aube rotorique de turbine
DE10016081A1 (de) Plattenförmiger, auskragender Bauteilabschnitt einer Gasturbine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090707

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20150801