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1. WO2012072384 - TURBOMACHINE WITH SEALING STRUCTURE BETWEEN ROTATING AND POSITIONALLY FIXED PARTS, AND METHOD FOR MANUFACTURING SAID SEALING STRUCTURE

Publication Number WO/2012/072384
Publication Date 07.06.2012
International Application No. PCT/EP2011/069707
International Filing Date 09.11.2011
IPC
F01D 5/20 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
12Blades
14Form or construction
20Specially-shaped blade tips to seal space between tips and stator
F01D 11/12 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
11Preventing or minimising internal leakage of working fluid, e.g. between stages
08for sealing space between rotor blade tips and stator
12using a rubstrip, e.g. erodible, deformable or resiliently biased part
CPC
B22F 3/1055
B22F 7/06
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
7Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting ; wherein at least one part is obtained by sintering or compression
06of composite workpieces or articles from parts, e.g. to form tipped tools
B29C 64/153
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
10Processes of additive manufacturing
141using only solid materials
153using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B33Y 80/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
80Products made by additive manufacturing
F01D 11/127
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
11Preventing or minimising internal leakage of working-fluid, e.g. between stages
08for sealing space between rotor blade tips and stator
12using a rubstrip, e.g. erodible. deformable or resiliently-biased part
127with a deformable or crushable structure, e.g. honeycomb
F01D 5/20
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members
12Blades
14Form or construction
20Specially-shaped blade tips to seal space between tips and stator
Applicants
  • SIEMENS AKTIENGESELLSCHAFT [DE]/[DE] (AllExceptUS)
  • GÖHLER, Jens [DE]/[DE] (UsOnly)
  • KERNSTOCK, Frank [DE]/[DE] (UsOnly)
  • REHME, Olaf [DE]/[DE] (UsOnly)
  • SCHÄFER, Martin [DE]/[DE] (UsOnly)
Inventors
  • GÖHLER, Jens
  • KERNSTOCK, Frank
  • REHME, Olaf
  • SCHÄFER, Martin
Common Representative
  • SIEMENS AKTIENGESELLSCHAFT
Priority Data
102010062087.429.11.2010DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) STRÖMUNGSMASCHINE MIT DICHTSTRUKTUR ZWISCHEN DREHENDEN UND ORTSFESTEN TEILEN SOWIE VERFAHREN ZUR HERSTELLUNG DIESER DICHTSTRUKTUR
(EN) TURBOMACHINE WITH SEALING STRUCTURE BETWEEN ROTATING AND POSITIONALLY FIXED PARTS, AND METHOD FOR MANUFACTURING SAID SEALING STRUCTURE
(FR) TURBOMACHINE COMPORTANT UNE STRUCTURE D'ÉTANCHÉITÉ ENTRE DES PIÈCES TOURNANTES ET DES PIÈCES FIXES AINSI QUE PROCÉDÉ DE FABRICATION DE LADITE STRUCTURE D'ÉTANCHÉITÉ
Abstract
(DE)
Die Erfindung betrifft eine Strömungsmaschine mit einer Dichtstruktur (15) und ein Verfahren zur Herstellung einer solchen Dichtstruktur. Die Dichtstruktur besteht aus einem offenen Verband von Zellen (17), die durch Wände (16) voneinander abgetrennt sind. Erfindungsgemäß ist vorgesehen, die Wände (16) in axialer Richtung zu neigen, damit ein Strömungswiderstand der Dichtstruktur bei einem Druckabfall von p2 zu p1 besser abgedichtet werden kann. Außerdem können sich die Wände (16) vorteilhaft zumindest teilweise elastisch verformen, wenn es zu einem Schleifen der Dichtstruktur (15) an der gegenüberliegenden Dichtfläche kommt. Vorteilhaft kann diese Verformung noch unterstützt werden, wenn die Wände auch in Umfangsrichtung geneigt hergestellt werden. Vorteilhaft ist eine Herstellung insbesondere durch pulverbett-basierte, additive Fertigungsverfahren möglich.
(EN)
The invention relates to a turbomachine having a sealing structure (15) and to a method for manufacturing a sealing structure of said type. The sealing structure is composed of an open assembly of cells (17) which are separated from one another by walls (16). It is provided according to the invention that the walls (16) are inclined in the axial direction in order that a flow resistance of the sealing structure in the case of a pressure drop from p2 to p1 can be better sealed off. Furthermore, the walls (16) can advantageously at least partially elastically deform if sliding of the sealing structure (15) on the facing sealing surface occurs. Said deformation can advantageously also be assisted if the walls are manufactured so as to also be inclined in the circumferential direction. Manufacturing may advantageously be carried out in particular by means of powder bed-based, additive production processes.
(FR)
L'invention concerne une turbomachine comportant une structure d'étanchéité (15) et un procédé de fabrication de ladite structure d'étanchéité. La structure d'étanchéité est composée d'un ensemble ouvert de cellules (17) qui sont séparées les unes des autres par des parois (16). Selon l'invention, les parois (16) sont inclinées en direction axiale pour qu'une résistance à l'écoulement de la structure d'étanchéité puisse être rendue plus étanche en cas de chute de la pression de p2 à p1. Les parois (16) peuvent en outre avantageusement se déformer élastiquement au moins en partie si un meulage de la structure d'étanchéité (16) est effectué sur la surface d'étanchéité opposée. Cette déformation peut avantageusement être encore assistée si les parois sont également inclinées dans la direction périphérique. Ladite structure d'étanchéité peut avantageusement être produite en particulier par un procédé de fabrication additif sur lit de poudre.
Also published as
Latest bibliographic data on file with the International Bureau