DE4446361A1 - Brush sealing for turbine machine - Google Patents
Brush sealing for turbine machineInfo
- Publication number
- DE4446361A1 DE4446361A1 DE19944446361 DE4446361A DE4446361A1 DE 4446361 A1 DE4446361 A1 DE 4446361A1 DE 19944446361 DE19944446361 DE 19944446361 DE 4446361 A DE4446361 A DE 4446361A DE 4446361 A1 DE4446361 A1 DE 4446361A1
- Authority
- DE
- Germany
- Prior art keywords
- blades
- brushes
- receiving devices
- turbomachine
- brush
- 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- Withdrawn
Links
- 238000007789 sealing Methods 0.000 title claims description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 238000000926 separation method Methods 0.000 abstract description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/164—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of an axial flow wheel
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/001—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade and rotor
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
- F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
-
- 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
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
- F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
-
- 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
- F05D2240/55—Seals
- F05D2240/56—Brush seals
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Die Erfindung betrifft Bürstendichtungen für Turbomaschinen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to brush seals for turbomachinery according to the preamble of claim 1.
Aus der GB-C 885 032 ist es bekannt, Labyrinthdichtungen mit einer bürstenartigen Struktur zwischen Wellen und Gehäusen von Turbomaschinen anzuordnen, wobei diese Dichtungen entweder am Gehäuse oder an der Welle von Turbomaschinen befestigt sein können.From GB-C 885 032 it is known to use labyrinth seals a brush - like structure between the shafts and housings of To arrange turbomachines, these seals either on Housing or attached to the shaft of turbomachinery can.
Besondere Probleme stellen sich bei der Verwendung von Bür stendichtungen am Umfang von Laufschaufeln in Turbomaschinen. Stehende Bürstendichtungen würden von Kanten von mit den Lauf schaufeln rotierenden Deckbändern in kurzer Zeit zerschlagen werden.Special problems arise when using Bür End seals on the circumference of rotor blades in turbomachinery. Standing brush seals would edge off with the barrel shovel rotating shrouds smashed in a short time will.
Aufgabe der Erfindung ist es daher, Bürstendichtungen für Tur bomaschinen für die Verwendung am Umfang von Laufschaufeln zu schaffen, die verschleißfrei sind.The object of the invention is therefore to provide brush seals for doors machines for use on the circumference of blades create that are wear-free.
Die Lösung der Aufgabe erfolgt mit Bürstendichtungen für Tur bomaschinen mit den Merkmalen des Anspruchs l. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen dar gestellt.The task is solved with brush seals for doors bomachines with the features of claim l. Beneficial Embodiments of the invention are set out in the subclaims posed.
Erfindungsgemäße Bürstendichtungen für Turbomaschinen rotieren mit Laufschaufeln und laufen gegen ein geschlossenes Gehäuse der Turbomaschine, so daß lange Betriebsdauer bei gleichblei bender Dichtwirkung erzielt wird. Ein zusätzlicher Vorteil der erfindungsgemäßen Bürstendichtungen für Turbomaschinen ist die von diesen Bürstendichtungen ausgehende, ausgezeichnete Schwingungsdämpfung für die Laufschaufeln. Brush seals according to the invention for turbomachinery rotate with blades and run against a closed housing the turbomachine, so that long operating time with the same sealing effect is achieved. An additional benefit of Brush seals for turbomachinery according to the invention is the excellent starting from these brush seals Vibration damping for the blades.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung sind die Bürstendichtungen kreisförmig und an einer Stelle getrennt, so daß die Bürstendichtungen vorteilhaft auf die Laufschaufeln montiert werden können.According to an advantageous embodiment of the invention Brush seals circular and separated in one place, see above that the brush seals are advantageous on the blades can be assembled.
Vorteilhafte Dichtungs- und Dämpfungseigenschaften ergeben sich für Turbomaschinen gemäß der Erfindung mit zwei koaxi alen, kreisringförmigen Bürsten in den Aufnahmevorrichtungen der Laufschaufeln, die in axialer Richtung beabstandet sind.Advantageous sealing and damping properties result turbo machines according to the invention with two coaxial alen, circular brushes in the receptacles of the blades, which are spaced in the axial direction.
Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung laufen die Bürsten gegen ein ZrO₂-beschichtetes Gehäuse der Turbomaschine.According to a further advantageous embodiment of the invention the brushes run against a ZrO₂-coated housing Turbo machine.
Die Erfindung wird im folgenden anhand von Ausführungsbeispie len dargestellt. Es zeigt:The invention is described below with reference to exemplary embodiments len shown. It shows:
Fig. 1 eine Ansicht einer erfindungsgemäßen Laufschau fel einer Turbomaschine mit Bürstendichtung. Fig. 1 is a view of a Laufschau fel invention of a turbomachine with a brush seal.
Fig. 1:
Eine Turbomaschine 1 weist ein geschlossenes Gehäuse 2
und eine Laufschaufel 3 auf. Das Gehäuse 2 ist mit Rippen 4
und abgestuften, koaxialen Gleitflächen 5, die vorzugsweise
ZrO₂-beschichtet sein können, versehen. Die Gleitflächen 5
können direkt am Gehäuse 2 anliegen oder radial nach innen vom
Gehäuse 2 beabstandet sein. Eine Leitschaufel 6 ist am äußeren
Umfang im Gehäuse 2 gehalten. Auf einer zentralen Welle 7 der
Turbomaschine 1 ist die Laufschaufel 3 gelagert. Fig. 1:
A turbomachine 1 has a closed housing 2 and a rotor blade 3 . The housing 2 is provided with ribs 4 and stepped, coaxial sliding surfaces 5 , which may preferably be ZrO₂-coated. The sliding surfaces 5 can rest directly on the housing 2 or be spaced radially inward from the housing 2 . A guide vane 6 is held on the outer circumference in the housing 2 . The rotor blade 3 is mounted on a central shaft 7 of the turbomachine 1 .
Die Laufschaufel 3 ist am äußeren Umfang mit Deckbändern 8 und Aufnahmevorrichtungen 9, 10 ausgestattet. Einzelne Bürsten 11, 12 für jede Laufschaufel 3 sind in den Aufnahmevorrichtungen 9, 10 gehalten und radial nach außen gegen das geschlossene Gehäuse 2 gerichtet. The rotor blade 3 is equipped on the outer circumference with shrouds 8 and receiving devices 9 , 10 . Individual brushes 11 , 12 for each rotor blade 3 are held in the holding devices 9 , 10 and directed radially outward against the closed housing 2 .
Die Leitschaufel 6 ist am inneren Umfang mit einer Halterung 13 für eine Platte 14 mit Aufnahmevorrichtungen 15, 16 verse hen. In den Aufnahmevorrichtungen 15, 16 sind Bürstendichtun gen 17, 18 gehalten, die radial nach innen gerichtet sind auf eine Gleitfläche 19, die auf der Welle 7 gelagert ist.The guide vane 6 is hen on the inner circumference with a holder 13 for a plate 14 with receiving devices 15 , 16 verses. In the receiving devices 15 , 16 Bürstendichtun conditions 17 , 18 are held, which are directed radially inwards on a sliding surface 19 which is mounted on the shaft 7 .
Gemäß einer bevorzugten Ausgestaltung der Erfindung sind die Bürsten 11, 12, 17, 18 in den Aufnahmevorrichtungen 9, 10 der Laufschaufel 3 und in den Aufnahmevorrichtungen 15, 16 der Leitschaufel 6 zu koaxialen, kreisringförmigen Bürstendicht ringen ausgebildet, die zum Einfädeln in die Aufnahmevorrich tungen 9, 10, 15, 16 mit einer Trennstelle (nicht dargestellt) versehen sind. Zwei koaxiale, kreisringförmige Bürstendicht ringe 11, 12 können mit axialem Abstand und unterschiedlichen Radien auf den Laufschaufeln 3 angeordnet sein. Zwei koaxiale, kreisringförmige Bürstendichtringe 17, 18 können mit axialem Abstand am inneren Umfang der Leitschaufel 6 befestigt sein.According to a preferred embodiment of the invention, the brushes 11 , 12 , 17 , 18 in the receiving devices 9 , 10 of the moving blade 3 and in the receiving devices 15 , 16 of the guide vane 6 are formed to form coaxial, annular brush sealing rings, which are lines for threading into the receiving devices 9 , 10 , 15 , 16 are provided with a separation point (not shown). Two coaxial, annular brush sealing rings 11 , 12 can be arranged on the blades 3 with an axial distance and different radii. Two coaxial, annular brush sealing rings 17 , 18 can be attached to the inner circumference of the guide vane 6 at an axial distance.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944446361 DE4446361A1 (en) | 1994-12-23 | 1994-12-23 | Brush sealing for turbine machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944446361 DE4446361A1 (en) | 1994-12-23 | 1994-12-23 | Brush sealing for turbine machine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4446361A1 true DE4446361A1 (en) | 1996-06-27 |
Family
ID=6536956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19944446361 Withdrawn DE4446361A1 (en) | 1994-12-23 | 1994-12-23 | Brush sealing for turbine machine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4446361A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19803502A1 (en) * | 1998-01-30 | 1999-08-12 | Behr Gmbh & Co | IC engine radiator cooling fan arrangement |
DE102004023879A1 (en) * | 2003-05-13 | 2004-12-16 | Alstom Technology Ltd | axial flow steam turbine |
WO2008125677A1 (en) * | 2007-04-17 | 2008-10-23 | Siemens Aktiengesellschaft | Impulse turbine |
WO2014003968A1 (en) * | 2012-06-29 | 2014-01-03 | General Electric Company | Fan assembly, corresponding gas turbine engine and mounting method |
FR3010462A1 (en) * | 2013-09-11 | 2015-03-13 | Snecma | ANGULAR RECTIFIER AREA FOR A TURBOMACHINE COMPRESSOR COMPRISING A BRUSHED SEAL |
EP2957718A1 (en) * | 2014-06-18 | 2015-12-23 | Siemens Aktiengesellschaft | Turbine |
FR3073000A1 (en) * | 2017-11-02 | 2019-05-03 | Safran Aircraft Engines | MOBILE AUB OF A TURBOMACHINE |
-
1994
- 1994-12-23 DE DE19944446361 patent/DE4446361A1/en not_active Withdrawn
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19803502A1 (en) * | 1998-01-30 | 1999-08-12 | Behr Gmbh & Co | IC engine radiator cooling fan arrangement |
DE19803502B4 (en) * | 1998-01-30 | 2006-01-05 | Behr Gmbh & Co. Kg | fan arrangement |
DE102004023879A1 (en) * | 2003-05-13 | 2004-12-16 | Alstom Technology Ltd | axial flow steam turbine |
US7186074B2 (en) | 2003-05-13 | 2007-03-06 | Alstom Technology, Ltd. | Axial flow stream turbines |
DE102004023879B4 (en) * | 2003-05-13 | 2018-01-18 | General Electric Technology Gmbh | axial flow steam turbine |
WO2008125677A1 (en) * | 2007-04-17 | 2008-10-23 | Siemens Aktiengesellschaft | Impulse turbine |
WO2014003968A1 (en) * | 2012-06-29 | 2014-01-03 | General Electric Company | Fan assembly, corresponding gas turbine engine and mounting method |
FR3010462A1 (en) * | 2013-09-11 | 2015-03-13 | Snecma | ANGULAR RECTIFIER AREA FOR A TURBOMACHINE COMPRESSOR COMPRISING A BRUSHED SEAL |
US10330117B2 (en) | 2013-09-11 | 2019-06-25 | Safran Aircraft Engines | Angular stator sector for a turbomachine compressor comprising a brush seal |
EP2957718A1 (en) * | 2014-06-18 | 2015-12-23 | Siemens Aktiengesellschaft | Turbine |
FR3073000A1 (en) * | 2017-11-02 | 2019-05-03 | Safran Aircraft Engines | MOBILE AUB OF A TURBOMACHINE |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |