WO2017186481A1 - Répartiteur de fluide de refroidissement, aube correspondante, élément d'insert, et procédé - Google Patents

Répartiteur de fluide de refroidissement, aube correspondante, élément d'insert, et procédé Download PDF

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Publication number
WO2017186481A1
WO2017186481A1 PCT/EP2017/058644 EP2017058644W WO2017186481A1 WO 2017186481 A1 WO2017186481 A1 WO 2017186481A1 EP 2017058644 W EP2017058644 W EP 2017058644W WO 2017186481 A1 WO2017186481 A1 WO 2017186481A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling fluid
blade
fluid distributor
inserts
cavity
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.)
Ceased
Application number
PCT/EP2017/058644
Other languages
German (de)
English (en)
Inventor
Stefan Bärow
Oliver Dominka
Guido Ederer
Christian Felsmann
Florian Fuchs
Robert Herfurth
Jose Angel Hernandez Maza
Michael Kluck
Eike Kohlhoff
Kay Krabiell
Khaled Maiz
Behnam Nouri
Andre Willmann
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of WO2017186481A1 publication Critical patent/WO2017186481A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F01D5/187—Convection cooling
    • F01D5/188—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall
    • F01D5/189—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall the insert having a tubular cross-section, e.g. airfoil shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/06—Fluid supply conduits to nozzles or the like
    • F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
    • 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

Definitions

  • Turbine blades of gas turbines are thermally and mechanically highly stressed components.
  • impact cooling inserts It is a cooling fluid distributor with holes, which is located at a small distance from the wall. The cooling air can then penetrate through the holes and bounce on the wall. Therefore, this type of cooling is also called impingement cooling.
  • the turbine blades are often complex shaped to optimize flow conditions. This makes it difficult or impossible to introduce a finished cooling fluid manifold as a whole into the turbine blade.
  • a cooling fluid distributor which is constructed of several components and is connected within the turbine blade to a cooling fluid distributor. Thus, it is sufficient to introduce the individual components and not the finished cooling fluid distributor as a whole.
  • a turbine blade is known with an impact cooling insert, which consists of two sections.
  • the sections have an overlapping area in which they are wavy.
  • the object of the invention is to provide a further improvement of such a multi-part cooling fluid distributor. It is also an object to provide an associated method and a turbine blade with an improved cooling fluid distributor.
  • the solution to this problem is specified in the independent claims.
  • the dependent claims teach advantageous developments.
  • a cooling fluid distributor for distributing cooling fluid in a cavity of a blade of a turbomachine, comprising at least two sub-inserts, wherein the sub-inserts are individually inserted into the cavity of the blade, wherein the sub-inserts are formed and arranged by a Heat treatment within the cavity of the blade forms a solder joint between the sub-inserts, so that the sub-inserts are connected to a cooling fluid distributor, is to provide.
  • the invention generally relates to a cooling fluid distributor for the blade of a turbomachine.
  • this is a turbine, usually a gas turbine.
  • a turbine bucket is usually meant.
  • such a cooling fluid distributor can be constructed from a multiplicity of partial inserts. As a rule, two parts are sufficient.
  • the part inserts can be introduced individually.
  • a group of sub-assignments such as a group of two sub-assignments, may also be introduced jointly.
  • a cooling fluid distributor can be formed, which as a whole can not be introduced into the blade.
  • the solder joint can be provided with moderate effort insofar as it is easily possible to suspend the blade with the part inserts such a heat treatment that forms the solder joint. It is understood that it is necessary to use such parts inserts that can be soldered and that the part inserts must also be arranged so that the solder joint is formed. By a solder joint between the part inserts can be prevented in often improved manner that emerges undesirable cooling air at the connection of the part inserts. This, however, the better the better the positive connection between the part inserts before the heat treatment.
  • the part inserts are additionally connected by a non-positive and / or positive connection. The additional frictional and / or positive connection is often due to the manufacturing process.
  • the part inserts must be arranged according to the fact that the solder joint can form.
  • the non-positive and / or positive connection is often very advantageous.
  • the frictional and / or positive connection has the stability that must have the connection of the part inserts in total.
  • the solder joint is used.
  • the component inserts are connected by a plug connection.
  • a plug connection is a simple form of a form-fitting, often also a frictional connection. This makes it possible to insert the part inserts in the cavity of the blade and there relatively ein- fold together. Of course, especially to allow a subsequent forming a solder joint.
  • the cooling fluid distributor has surfaces that can be arranged at a low distance from a wall of the blade, wherein the surfaces holes, in particular holes, so that cooling fluid can be passed through the holes perpendicular to the wall of the blade.
  • the impingement cooling is a particularly efficient cooling. Spacers can be used to secure the distance between the cooling fluid distributor and the wall.
  • the cooling fluid manifold is configured for a vane. The described impingement cooling is often used in guide vanes. Therefore, it makes sense to form the cooling fluid distributor so that it can be arranged in a guide vane.
  • the cooling fluid distributor can also be used in a rotor blade. It should be noted that the mechanical loads in a rotor blade are much higher due to the rotation during operation. This can also lead to increased demands on the quality of the solder joint, but they are achievable.
  • the cooling fluid distributor is designed for an S-shaped blade. Especially with S-shaped blades, it is sometimes difficult or impossible to introduce the cooling fluid distributor as a whole into the cavity of the blade. Therefore, the structure of several parts is particularly recommended here.
  • the sub-inserts may be inserted radially one behind the other into the cavity of the blade.
  • a partial insert which has a different radial position than a subsequently inserted part insert.
  • Often just the curvature along the radius is a hindrance to a finished cooling fluid distributor to introduce as a whole. This can be circumvented by the embodiment described here.
  • two part inserts are present, wherein a first part insert is designed as a top and a second part insert is designed as a lower part, wherein in a guide vane, the upper part for installation in the installation position in the radially inner part of the blade and the lower part for installation in the is provided radially outer part of the blade.
  • the blade root lies radially on the outside and the blade head, often also referred to the blade tip, lies radially inward.
  • the lower part is inserted, so that it rests on the vane head, often on a head plate.
  • the upper part is inserted so that it rests against the lower part.
  • the invention can be easily implemented.
  • the top and bottom can be inserted and connected by subsequent soldering to a cooling fluid manifold which as a whole could not have entered the cavity of the blade.
  • at least one part insert is designed to enter into a solder joint with the blade.
  • this is the part insert, which is arranged on the cooling air inlet channel.
  • the part insert In the above example it would be the bottom part.
  • a Lötfalz be provided on the affected part insert, so that forms a solder joint between the part insert and the blade at a suitable heat treatment of the blade.
  • the whole cooling fluid distributor is connected to the blade, since the part inserts are interconnected.
  • a part insert made of sheet metal, in particular of pre-sintered solder sheet is suitable for this purpose. Furthermore, it is advantageous if it is a material into which the holes required for the impingement cooling can be well incorporated. Finally, it is also beneficial if it is a material that allows an adaptation of the shape of the part inserts to the blade geometry.
  • Pre-sintered solder sheet has the aforementioned properties before the heat treatment for forming the solder joint. After the heat treatment, this is usually no longer the case. Rather, then there is a desired high mechanical stability.
  • a change in shape or a hole is not provided after the heat treatment anyway. It is also intended to expressly protect a blade of a turbomachine with a cooling fluid distributor described above. Likewise, a part insert is to be protected, which is designed for use in a cooling fluid distributor described above.
  • Also to be protected is a method for introducing a cooling fluid distributor for distributing cooling fluid into the cavity of a blade of a turbomachine, wherein at least two part inserts are introduced into the cavity of the blade, wherein the blade is subjected to the introduced part inserts a heat treatment, so that the part inserts enter into a solder joint.
  • This method is particularly suitable for providing a blade with the above-described cooling fluid distributor.
  • FIG. 1 shows a brazing sheet with cooling holes
  • Fig. 3 is a Lötfalz in section
  • Fig. 4 is designed as a top part insert
  • Fig. 7 show the inserted into the upper part lower part.
  • Fig. 1 shows a sheet with holes. It is a pre-sintered solder sheet 1, which is flexible before a heat treatment, so that the holes can be easily introduced by drilling, so that cooling holes 2 result. In addition, the solder sheet 1 can be easily brought into a desired shape, such as by bending.
  • the brazing sheet 1 as shown in Fig. 2, are formed to a serving as a part lower part 3 with cooling holes 2.
  • the lower part terminates with a Lötfalz 4, in which no cooling holes 2 are present.
  • Fig. 3 shows a sectional view. It can be seen that the Lötfalz 4 is formed as Lötüberhang, which may be up to 3 mm thick.
  • an upper part 5 can be formed with cooling holes 2, as shown in FIG. 4 can be seen.
  • Fig. 5 is a sectional view of the upper part 5 shown in Fig. 4.
  • Fig. 7 makes it clear that the upper part 5 containing cooling holes 2 is to be inserted up to a top plate 7 in the cavity of a turbine blade. Subsequently, the lower part 3, containing cooling holes 2, to be introduced into the cavity of the turbine blade. It is necessary to ensure that the upper part 5 rests as completely as possible on the lower part 3, as can be seen in Fig. 7.
  • the turbine blade is then, if possible in a vertical position to undergo heat treatment in an oven. This forms a solder joint 8 between the upper part 5 and lower part 3.
  • the positive fit prevents the cooling air from escaping unintentionally.
  • the Lötfalz 4 supports that formed as a baffle coolant cooling fluid distributor, constructed of the lower part 3 and upper part 5, permanently connected to the base plate 6 and thus to the turbine blade. Further welding is not required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne un répartiteur de fluide de refroidissement servant à répartir le fluide de refroidissement dans une cavité d'une aube de turbomachine, comprenant au moins deux inserts partiels (3, 5) lesquels sont introduits séparément dans la cavité de l'aube, les inserts partiels étant configurés et disposés de manière à permettre la réalisation d'une brasure (8) entre les inserts partiels (3, 5) dans la cavité de l'aube au moyen d'un traitement thermique, reliant les inserts partiels pour former un répartiteur de fluide de refroidissement. L'invention concerne également un procédé associé.
PCT/EP2017/058644 2016-04-27 2017-04-11 Répartiteur de fluide de refroidissement, aube correspondante, élément d'insert, et procédé Ceased WO2017186481A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016207162.9 2016-04-27
DE102016207162.9A DE102016207162A1 (de) 2016-04-27 2016-04-27 Kühlfluidverteiler für eine Schaufel aus mehreren Teileinsätzen

Publications (1)

Publication Number Publication Date
WO2017186481A1 true WO2017186481A1 (fr) 2017-11-02

Family

ID=58547512

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/058644 Ceased WO2017186481A1 (fr) 2016-04-27 2017-04-11 Répartiteur de fluide de refroidissement, aube correspondante, élément d'insert, et procédé

Country Status (2)

Country Link
DE (1) DE102016207162A1 (fr)
WO (1) WO2017186481A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005103452A1 (fr) 2004-04-20 2005-11-03 Siemens Aktiengesellschaft Aube de turbine comprenant un element d'insertion de refroidissement inertiel
EP2551457A2 (fr) * 2011-07-29 2013-01-30 United Technologies Corporation Ensemble d'aubes et procédé de formation d'un ensemble d'aube pour un moteur de turbine à gaz
WO2014131696A1 (fr) * 2013-02-28 2014-09-04 Siemens Aktiengesellschaft Segment de conduit de refroidissement, conduit de refroidissement, turbomachine et procédé de montage
EP2860348A1 (fr) 2013-10-08 2015-04-15 Siemens Aktiengesellschaft Insert consistant en plusieurs pièces pour une aube de turbine et procédé associé
EP3184750A1 (fr) * 2015-12-21 2017-06-28 United Technologies Corporation Déflecteur de refroidissement par impact

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6193465B1 (en) * 1998-09-28 2001-02-27 General Electric Company Trapped insert turbine airfoil
US7104756B2 (en) * 2004-08-11 2006-09-12 United Technologies Corporation Temperature tolerant vane assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005103452A1 (fr) 2004-04-20 2005-11-03 Siemens Aktiengesellschaft Aube de turbine comprenant un element d'insertion de refroidissement inertiel
EP2551457A2 (fr) * 2011-07-29 2013-01-30 United Technologies Corporation Ensemble d'aubes et procédé de formation d'un ensemble d'aube pour un moteur de turbine à gaz
WO2014131696A1 (fr) * 2013-02-28 2014-09-04 Siemens Aktiengesellschaft Segment de conduit de refroidissement, conduit de refroidissement, turbomachine et procédé de montage
EP2860348A1 (fr) 2013-10-08 2015-04-15 Siemens Aktiengesellschaft Insert consistant en plusieurs pièces pour une aube de turbine et procédé associé
EP3184750A1 (fr) * 2015-12-21 2017-06-28 United Technologies Corporation Déflecteur de refroidissement par impact

Also Published As

Publication number Publication date
DE102016207162A1 (de) 2017-11-02

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