EP0995881B1 - Dichtungsanordnung - Google Patents
Dichtungsanordnung Download PDFInfo
- Publication number
- EP0995881B1 EP0995881B1 EP99810907A EP99810907A EP0995881B1 EP 0995881 B1 EP0995881 B1 EP 0995881B1 EP 99810907 A EP99810907 A EP 99810907A EP 99810907 A EP99810907 A EP 99810907A EP 0995881 B1 EP0995881 B1 EP 0995881B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing arrangement
- guide
- arrangement according
- felt
- sealing
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/005—Sealing means between non relatively rotating elements
- F01D11/006—Sealing the gap between rotor blades or blades 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
- F01D11/005—Sealing means between non relatively rotating elements
Definitions
- the invention relates to a sealing arrangement for reducing leakage currents within a flow rotation machine according to the preamble of Claim 1.
- Seals consist of a sealing surface with or without a spring element exist and in a correspondingly provided in the rotor or guide blade root Sealing groove contour.
- the spring element generates one Contact pressure as well as the positioning of the sealing surface between those to be sealed Contours.
- Such seals are used in static gas turbine components carrying hot gas, such as turbine guide vanes, heat accumulation segments or combustion chamber segments to reduce cooling air consumption, to prevent axial gap flows with hot gas and to shield against heat radiation.
- the two sealing surfaces has, which each include an elastic corrugated surface.
- the sealing arrangement to be designed in different surface shapes However, it requires flat, sealed contour surfaces on which they lie flat can. Is it the sealing of intermediate gaps, that of curved Surfaces are included, so the known sealing arrangement bumps to its limits.
- GB 1 580 884 also describes a sealing arrangement with sealing elements made of metal, thermoplastic or ceramic.
- the invention has for its object a sealing arrangement for reduction of leakage currents within a rotary flow machine, preferably an axial turbomachine, with rotor and guide vanes, each in at least a row of guide blades or guide vanes are arranged and have blade feet, via which the individual rotor blades and guide vanes are connected with fastening contours are to be designed such that the sealing arrangement between any shape Gaps between spaces is adjustable.
- the sealing arrangement should consist of one Material that corresponds to the operating conditions prevailing in a gas turbine plant, with regard to the high temperatures and pressure conditions, without prejudice survives.
- a sealing arrangement according to the preamble of the claim 1 designed such that in the space between two adjacent Blade feet within a guide or blade row or between Guide and / or blades and adjacent components of the turbomachine a sealing element comprising a felt-like material is provided.
- Felt-like materials based on intermetallic fibers can be undamaged Temperatures of over 1000 ° C survive because of the intermetallic Fibers have a high heat resistance. They also have one high resistance to oxidation and advantageous thermal conductivity. These properties can also be specifically adjusted by the selected intermetallic fiber and be adapted to the respective conditions. Add to that that through appropriate Choice of the intermetallic used in the manufacture of the felt-like material Fibers a fine-grained structure with selectively adjustable porosity and thus associated elasticity is possible.
- the intermetallic fibers preferably consist of an intermetallic Aluminum-iron or nickel-based phase or of an alloy of the above mentioned components.
- the sealing elements according to the invention are designed like a strand and have, depending on the cross-sectional shape of the space to be sealed between two adjacent blade feet, over different strand cross-sections, for example rectangular, angled or cross-shaped cross sections.
- the strand-like sealing element is preferably firmly attached to at least a blade root attached at a suitable location, for example by gluing, Soldering or welding.
- a suitable location for example by gluing, Soldering or welding.
- the felt-like material it is also possible to use the felt-like material to have a precise fit in the correspondingly provided grooves.
- Figure 1 there are two blade feet 1, 2 in a highly schematic manner opposite, for example arranged in a guide or moving blade row are.
- a sealing element 3 made of felt-like material.
- the sealing element 3 is true to shape adapted the surface contours of both blade feet 1 and 2 so that the seal seals both blade feet 1 and 2 gas-tight against each other.
- the sealing element 3 is fixed with a Blade foot connected. This is preferably done with the help of a soldering, adhesive or Welded joint.
- the sealing element 3 is fixed with the blade root 1 along its contact contour 4.
- FIG 2a two are arranged side by side in a perspective view Guide vanes 5 and 6 are shown, each having a headband 7, a guide blade blade 8 and have a guide blade root 9. Between the opposite Headbands 7 of the guide vanes 5 and 6 and the opposite guide vane feet 9 is in each case a sealing element suitably adapted to the intermediate space 3, consisting of felt-like material.
- FIG. 2a shows two blades 10, 11 arranged side by side - the blade is only for reasons of a clearer presentation Blade 10 not shown - between those in the upper region of the blade feet likewise the sealing elements 3 according to the invention are provided.
- FIGS. 3a to 3e A large number of differently shaped sealing elements are shown in FIGS. 3a to 3e.
- the sealing element 3 in FIG. 3a protrudes into two opposite ones Grooves 12, 13 each of two adjacent blade feet.
- this includes Sealing element 3 both a vertical contact surface of the blade root shown as well as part of the lower horizontal support surface.
- Figure 3c shows one Sheet metal structure 14 for fastening purposes, on the vertical flank of which Felt-like material provided sealing element 3 is attached.
- the sealing element 3 can also be made by means of soldered, adhesive and welded connections Detachable connections, such as screw connections, to corresponding Contact surfaces are attached.
- a side view is shown by a guide vane in the area of the guide vane foot 9 has a sealing element 3, which is blunt on a plane Side surface is soldered.
- the guide vane sits in the area of the headband 7 the felt-like sealing element 3 'in a corresponding groove-shaped recess within the headband.
- Such grooves can also be in the form of a dovetail shape be carried out as shown in Figure 3e. Here it can Sealing element 3 inserted laterally into the dovetail-like recess or removed again.
- sealing elements 3 are provided the entry of hot gases into the space between the housing 17 and the first Prevent vane 18.
- a further sealing element 3 ' likewise seals the lateral space between the guide vane foot and housing 17 from gas-tight.
- the sealing arrangement according to the invention consisting of felt-like material, which in Kind of an intermetallic felt is basically in there anywhere Spaces are inserted in which a gas flow is prevented should. Due to the high oxidation resistance and high resistance against mechanical deformations this is suitable on aluminides or Intermetallic felts based on nickel aluminides are particularly preferred for use in gas turbines, where hot temperature conditions and high pressure ratios are predominant.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Gasket Seals (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
- Fig. 1
- Teilquerschnittsdarstellung durch zwei benachbarte Schaufelfüße mit in einen Zwischenraum eingebrachtes filzartiges Materia;
- Fig. 2a, b
- perspektivische Darstellung von jeweils zwei benachbarten Laufund Leitschaufeln;
- Fig. 3 a,b,c,d,e
- Material, beispielhafte Ausführungsformen des erfindungsgemäßen Dichtungselementes sowie
- Fig. 4
- Querschnittsdarstellung durch eine Gasturbinenanlage im Bereich des Brennkammeraustrittes sowie Turbineneintrittes.
- 1, 2
- Schaufelfuß
- 3, 3'
- Dichtelement
- 4
- Konturverlauf
- 5, 6
- Leitschaufeln
- 7
- Kopfband
- 8
- Leitschaufelblatt
- 9
- Leitschaufelfuß
- 10, 11
- Laufschaufeln
- 12, 13
- Nuten
- 14
- Blechstruktur
- 15
- Brennkammeraustritt
- 16
- Turbineneinlaß
- 17
- Turbinengehäuse
- 18
- Leitschaufel
Claims (7)
- Dichtungsanordnung zur Reduzierung von Leckströmen innerhalb einer Strömungsrotationsmaschine, vorzugsweise einer axialen Turbomaschine, mit Laufund Leitschaufeln, die jeweils in wenigstens einer Lauf- bzw. Leitschaufelreihe angeordnet sind und Schaufelfüsse (1, 2) aufweisen, über die die einzelnen Laufund Leitschaufeln mit Befestigungskonturen verbunden sind,
dadurch gekennzeichnet, daß zwischen wenigstens zwei benachbarten Schaufelfüßen (1, 2) innerhalb einer Leit- oder Laufschaufelreihe oder zwischen Leitund/oder Laufschaufeln und benachbarten Komponenten der Strömungsrotationsmaschine ein filzartiges Material aufweisendes Dichtelement (3) vorgesehen ist, wobei das fitzartige Material ein aus zusammengepressten und gesinterten intermetallischen Fasern zusammengesetzter intermetallischer Filz ist. - Dichtungsanordnung nach Anspruch 1,
dadurch gekennzeichnet, daß das Dichtelement (3) beidseitig formschlüssig an Außenkonturen der benachbarten Schaufelfüsse (1, 2) angepaßt ist. - Dichtungsanordnung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß das Dichtelement (3) wenigstens mit einem Schaufelfuß (1) fest verbunden ist. - Dichtungsanordnung nach Anspruch 3,
dadurch gekennzeichnet, daß die Verbindung eine Löt- oder Klebverbindung ist. - Dichtungsanordnung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß die intermetallischen Fasern aus einer intermetallischen Phase auf Aluminium-, Eisen oder Nickelbasis oder eine Legierung aus diesen Bestandteilen besteht. - Dichtungsanordnung nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß das filzartige Material über eine Porösität verfügt, so daß das Material von Kühlluft durchdringbar ist. - Dichtungsanordnung nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass die benachbarten Komponenten der Strömungsmaschine Gehäuseteile oder Brennkammer sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19848103 | 1998-10-19 | ||
DE19848103A DE19848103A1 (de) | 1998-10-19 | 1998-10-19 | Dichtungsanordnung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0995881A2 EP0995881A2 (de) | 2000-04-26 |
EP0995881A3 EP0995881A3 (de) | 2002-03-13 |
EP0995881B1 true EP0995881B1 (de) | 2004-01-07 |
Family
ID=7884914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99810907A Expired - Lifetime EP0995881B1 (de) | 1998-10-19 | 1999-10-06 | Dichtungsanordnung |
Country Status (4)
Country | Link |
---|---|
US (1) | US6312218B1 (de) |
EP (1) | EP0995881B1 (de) |
JP (1) | JP4465067B2 (de) |
DE (2) | DE19848103A1 (de) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19937577A1 (de) * | 1999-08-09 | 2001-02-15 | Abb Alstom Power Ch Ag | Reibungsbehaftete Gasturbinenkomponente |
DE10047307A1 (de) | 2000-09-25 | 2002-08-01 | Alstom Switzerland Ltd | Dichtungsanordnung |
JP2003035105A (ja) * | 2001-07-19 | 2003-02-07 | Mitsubishi Heavy Ind Ltd | ガスタービン分割壁 |
DE50211431D1 (de) | 2001-09-25 | 2008-02-07 | Alstom Technology Ltd | Dichtungsanordnung zur dichtspaltreduzierung innerhalb einer strömungsrotationsmaschine |
US6854960B2 (en) * | 2002-06-24 | 2005-02-15 | Electric Boat Corporation | Segmented composite impeller/propeller arrangement and manufacturing method |
CN100430499C (zh) * | 2002-08-16 | 2008-11-05 | 阿尔斯托姆科技有限公司 | 金属间材料及该材料的应用 |
US6883807B2 (en) | 2002-09-13 | 2005-04-26 | Seimens Westinghouse Power Corporation | Multidirectional turbine shim seal |
US6733234B2 (en) | 2002-09-13 | 2004-05-11 | Siemens Westinghouse Power Corporation | Biased wear resistant turbine seal assembly |
US6893217B2 (en) * | 2002-12-20 | 2005-05-17 | General Electric Company | Methods and apparatus for assembling gas turbine nozzles |
US20070048140A1 (en) * | 2005-08-24 | 2007-03-01 | General Electric Company | Methods and apparatus for assembling gas turbine engines |
EP1914389A1 (de) * | 2006-10-20 | 2008-04-23 | Siemens Aktiengesellschaft | Turbinenschaufel mit separatem Abdichtelement |
US9133720B2 (en) * | 2007-12-28 | 2015-09-15 | United Technologies Corporation | Integrally bladed rotor with slotted outer rim |
US9273563B2 (en) | 2007-12-28 | 2016-03-01 | United Technologies Corporation | Integrally bladed rotor with slotted outer rim |
US8206087B2 (en) | 2008-04-11 | 2012-06-26 | Siemens Energy, Inc. | Sealing arrangement for turbine engine having ceramic components |
GB2462810B (en) * | 2008-08-18 | 2010-07-21 | Rolls Royce Plc | Sealing means |
US8322977B2 (en) * | 2009-07-22 | 2012-12-04 | Siemens Energy, Inc. | Seal structure for preventing leakage of gases across a gap between two components in a turbine engine |
FR2998610B1 (fr) * | 2012-11-29 | 2019-04-05 | Safran Aircraft Engines | Roue de redresseurs a plateformes espacees |
US9926790B2 (en) * | 2014-07-21 | 2018-03-27 | Rolls-Royce Corporation | Composite turbine components adapted for use with strip seals |
US10107127B2 (en) * | 2014-07-31 | 2018-10-23 | United Technologies Corporation | Gas turbine engine with axial compressor having improved air sealing |
US9759079B2 (en) | 2015-05-28 | 2017-09-12 | Rolls-Royce Corporation | Split line flow path seals |
US10890078B1 (en) * | 2017-06-12 | 2021-01-12 | Technetics Group Llc | Flexible seal assembly |
EP3438410B1 (de) | 2017-08-01 | 2021-09-29 | General Electric Company | Dichtungssystem für eine rotationsmaschine |
US10718226B2 (en) | 2017-11-21 | 2020-07-21 | Rolls-Royce Corporation | Ceramic matrix composite component assembly and seal |
FR3092867B1 (fr) * | 2019-02-19 | 2021-08-13 | Safran Aircraft Engines | Partie de turbomachine pour aeronef a languettes d’etancheite |
CN113252246B (zh) * | 2021-06-18 | 2021-11-05 | 中国科学院武汉岩土力学研究所 | 一种可回收的地下连续墙接缝处渗漏检测装置 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2108176A1 (de) * | 1971-02-20 | 1972-08-31 | Motoren Turbinen Union | Befestigung von keramischen Turbinenschaufeln |
GB1580884A (en) * | 1977-08-03 | 1980-12-10 | Rolls Royce | Sealing means |
US4422827A (en) * | 1982-02-18 | 1983-12-27 | United Technologies Corporation | Blade root seal |
GB8609372D0 (en) * | 1986-04-17 | 1986-05-21 | Central Electr Generat Board | Sealing joints |
US4902198A (en) * | 1988-08-31 | 1990-02-20 | Westinghouse Electric Corp. | Apparatus for film cooling of turbine van shrouds |
US5104286A (en) * | 1991-02-08 | 1992-04-14 | Westinghouse Electric Corp. | Recirculation seal for a gas turbine exhaust diffuser |
US5149250A (en) | 1991-02-28 | 1992-09-22 | General Electric Company | Gas turbine vane assembly seal and support system |
FR2691749B1 (fr) * | 1992-05-27 | 1994-07-22 | Snecma | Dispositif d'etancheite entre des etages d'aubes et un tambour tournant notamment pour eviter les fuites autour des etages d'aubes de redresseur . |
DE4241420C1 (de) * | 1992-12-09 | 1993-11-25 | Mtu Muenchen Gmbh | Verfahren zur Herstellung von Bauteilen oder Substraten mit Verbundbeschichtungen und dessen Anwendung |
FR2706528B1 (fr) * | 1993-06-10 | 1995-09-01 | Snecma | Plate-forme séparée inter-aube de disque ailette de rotor de turbomachine. |
DE4432685C1 (de) * | 1994-09-14 | 1995-11-23 | Mtu Muenchen Gmbh | Anlaufbelaf für das Gehäuse einer Turbomaschine und Verfahren zur Herstellung |
US5531457A (en) * | 1994-12-07 | 1996-07-02 | Pratt & Whitney Canada, Inc. | Gas turbine engine feather seal arrangement |
DE19520268A1 (de) | 1995-06-02 | 1996-12-05 | Abb Management Ag | Dichtung |
US5509669A (en) * | 1995-06-19 | 1996-04-23 | General Electric Company | Gas-path leakage seal for a gas turbine |
US5586773A (en) * | 1995-06-19 | 1996-12-24 | General Electric Company | Gas-path leakage seal for a gas turbine made from metallic mesh |
JP2941698B2 (ja) * | 1995-11-10 | 1999-08-25 | 三菱重工業株式会社 | ガスタービンロータ |
US5820338A (en) * | 1997-04-24 | 1998-10-13 | United Technologies Corporation | Fan blade interplatform seal |
JP2000193093A (ja) * | 1998-12-25 | 2000-07-14 | Nichias Corp | 三部材接合部のシ―ル構造 |
-
1998
- 1998-10-19 DE DE19848103A patent/DE19848103A1/de not_active Withdrawn
-
1999
- 1999-10-06 DE DE59908238T patent/DE59908238D1/de not_active Expired - Lifetime
- 1999-10-06 EP EP99810907A patent/EP0995881B1/de not_active Expired - Lifetime
- 1999-10-12 US US09/414,968 patent/US6312218B1/en not_active Expired - Lifetime
- 1999-10-19 JP JP29691899A patent/JP4465067B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59908238D1 (de) | 2004-02-12 |
JP2000120401A (ja) | 2000-04-25 |
EP0995881A3 (de) | 2002-03-13 |
US6312218B1 (en) | 2001-11-06 |
EP0995881A2 (de) | 2000-04-26 |
JP4465067B2 (ja) | 2010-05-19 |
DE19848103A1 (de) | 2000-04-20 |
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