EP2414641A1 - Axialturbomaschinenrotor mit dichtscheibe - Google Patents
Axialturbomaschinenrotor mit dichtscheibeInfo
- Publication number
- EP2414641A1 EP2414641A1 EP10715749A EP10715749A EP2414641A1 EP 2414641 A1 EP2414641 A1 EP 2414641A1 EP 10715749 A EP10715749 A EP 10715749A EP 10715749 A EP10715749 A EP 10715749A EP 2414641 A1 EP2414641 A1 EP 2414641A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- sealing ring
- sealing
- outer edge
- radially
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 131
- 238000001816 cooling Methods 0.000 claims description 21
- 230000000694 effects Effects 0.000 abstract description 7
- 239000011796 hollow space material Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
- F01D5/3015—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type with side plates
-
- 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
Definitions
- the invention relates to a Axialturbomaschinenrotor with a sealing washer.
- An axial turbomachine for example a gas turbine, has a turbine in which hot gas is expanded.
- the temperature of the hot gas at the entrance to the turbine as high as possible to choose.
- the maximum feasible temperature level of the hot gas is limited by turbine strength requirements defined by design and material selection of turbine components.
- the temperature load and the mechanical stress of the components dictates their service life, which has to be above certain limits for reasons of safety and economy.
- a conventional turbine rotor has a shaft and discs mounted thereon in rotationally symmetrical manner, on the outer edge of which a plurality of rotor blades are fastened next to each other over the circumference.
- the blades and discs are sometimes the most stressed components in the turbine, which primarily defines servicing cycles of the gas turbine for these components.
- the blades are made of a filigree structure that is traversed by cooling channels through which the cooling air flows to cool the blades.
- the cooling channels open into the blade foot, where the cooling channels are fed with the cooling air.
- Hot gas range of the turbine can flow.
- the object of the invention is to provide a Axialturbomaschinenrotor, which has a long service life.
- the axial turbomachinery rotor according to the invention has a rotor body rotationally symmetrical about the rotor axis, a rotor blade having a plurality of blades, which are each fixed with their blade root on the rotor body, and a rotationally symmetrical about the rotor axis formed sealing washer, the radially adjacent with its outer edge inside is arranged on an axially extending projection of the blade root, so that a hollow space is formed between the blade root and the sealing disc, wherein on the outer edge of a radially outwardly opening groove is provided, in which a sealing ring is mounted, which during operation of the Rotor is slid radially outward in the groove under the action of centrifugal force, until the sealing ring radially against the inside of the projection and thereby seals the cavity on the blade root.
- the sealing ring Due to the fact that, during operation of the axial turbomachinery rotor, the sealing ring is pressed against the projection by the centrifugal force, the sealing ring is biased against the projection over the entire circumference. Thus, the contact between the sealing ring and the projection is well sealed, whereby the sealing effect between the projection and the sealing disc is high.
- the cavity is, for example, a channel for supplying cooling air to the blade root, as may for example be provided in a turbine of a gas turbine, leakage of cooling air at the sealing ring is small. As a result, the cooling of the rotor blade with the cooling air effectively, whereby the life of the axial turbomachinery rotor is high.
- the gasket includes a plurality of gasket segments, which allows the assembly of blades and gasket after manufacture of a rotor - welded or stacked from rotor disks - allows a stationary gas turbine.
- the sealing disk segments are preferably coupled to each other in the circumferential direction with a stepped rebate.
- the assembly of the sealing disc to the rotor body is simple, wherein with the help of the stepped rebate with an offset in the circumferential direction of the individual sealing disc segments to each other a gaping apart of the sealing disc segments is prevented.
- Sealing ring segments formed, which are each inserted in the at the outer edge of their associated sealing disc segment. Consequently, only the sealing ring or its segments are supported on the platforms and blades, which improves the sealing effect. At the same time, the
- the sealing ring segments preferably have two longitudinal ends facing away from each other, which are each formed by an envelope, which engages with a recess provided on the groove, so that the sealing ring segments are fixed in the circumferential direction in a form-fitting manner on the outer edge.
- the envelopes are preferably designed as legs formed in the axial direction in an L-shaped manner.
- each of the legs preferably has a radius of curvature which is at least greater than half the longitudinal extension of the affected leg. It is thereby achieved that at the longitudinal ends of the sealing ring segment rests gas-tight on the sealing disc segment.
- the projection has a radially inwardly opening groove into which the outer edge engages radially movable and at the bottom of the sealing ring can be applied.
- the outer edge of the sealing disk is advantageously accommodated in the groove of the projection, as a result of which harmful influences, in particular mechanical and / or thermal stress, on the sealing ring are reduced.
- a pressure difference is reduced transversely to the sealing ring, so that the sealing effect of the sealing ring is high.
- the axial turbo-machine rotor is preferably an axial-turbine rotor, and the rotor blades preferably have air channels which open into the cavity at the fairway, the cavity being provided for the supply of cooling air and / or cooling-air for the cooling air channels.
- FIG. 1 shows a detail of a longitudinal section of the embodiment according to the invention of the axial turbine rotor
- FIG. 1 shows detail A from FIG. 1
- 3 shows detail B from FIG. 1
- FIG. 5 shows detail D from FIG. 4 and FIG
- FIG. 6 shows detail C from FIG. 4.
- an axial-turbine rotor 1 has a plurality of rotor blades 2, which are lined up over the circumference of the axial-turbine rotor 1 and thereby form a rotor blade grid.
- the axial turbine rotor 1 further comprises a disc 3, on which the rotor blades 2 are mounted.
- Each blade 2 has an airfoil 4 with which the rotor 2 is aerodynamically effective.
- this has a blade root 5, which is held in a form-fitting manner in the disc 3, so that the blade 2 is fixed in the radial direction of the blade root 5.
- a base plate 7 of the blade 2 is provided which extends in the axial direction and in the circumferential direction and is aerodynamically effective on its radially outer side.
- the disc 2 is frontally limited with a plane perpendicular to the axis of the axial turbine rotor surface.
- a sealing disk 7 is arranged axially at a distance from this surface, whereby a cavity is formed between the sealing disk 7 and the disk 3.
- the cavity is adeluftzu 1500kanal 9, which is provided for the cooling air supply of cooling air to the blade root 5.
- An inner edge 22, which is thickened with respect to the average wall thickness of the sealing disk 7, of the sealing disk 7 is radially hooked to the disk 3, as a result of which, in operation, the Seal 7 is held radially from the disc 3 directly.
- the outer edge 10 of the sealing disc 7 is arranged radially adjacent to the radially inner side of the base plate 6, wherein the outer edge 10 of the sealing disc 7 engages in a provided in the radially inner side of the base plate 6, circumferential groove 11.
- a circumferential groove 12 is provided, which opens radially outward into the groove 11 of the base plate 6.
- Sealing disk 7 is arranged radially at a distance from the bottom of the groove 11 of the base plate 6, so that a radial play 13 is provided.
- a sealing ring 14 is inserted, which has a cross-section which is elongated or rectangular in the radial direction.
- the groove 12 in the sealing disc 7 is provided in the sealing disc 7 so deep that the sealing ring 14 in the groove 12 is flush with the outer edge 10 of the sealing disc 7.
- a centrifugal force which leads to a radial movement 15 of the sealing ring.
- the radial movement 15 is completed by the sealing ring 14 until the sealing ring 14 rests against the bottom of the groove 11 in the base plate 6.
- the radial clearance 13 is adjusted to the radial extent of the sealing ring 14 such that when the sealing ring 14 abuts the bottom of the groove 11 of the base plate 6, the sealing ring 14 still engages with the groove 12 in the outer edge 10 of the sealing washer 7.
- the sealing disc 7 is formed by a plurality of sealing disc segments 16, which are lined up next to each other over the circumference. At their edges at which the sealing disc segments 16 are arranged adjacent to each other, a stepped fold 17 is formed by a stop 18 of a sealing disc segment 16 and one with the stop 18 corresponding step 19 of the other, adjacent sealing disc segment is formed.
- each sealing ring segment 20 spans the outer edge 10 of the sealing disk segment 14 assigned to it in the circumferential direction.
- Each sealing ring segment 20 has two opposite sealing ring segment longitudinal ends 21.
- Each sealing ring segment longitudinal end 21 is folded in the axial direction, whereby at each sealing ring segment longitudinal end 21, a leg 22 is formed, with which the sealing ring segment longitudinal end 21 is formed L-shaped.
- On each leg 22 a curvature is provided with a radius of curvature 23, wherein at the outer edge 10 of the sealing disk segment 16 a correspondingly shaped
- Recess 24 is made.
- the legs 22 and the recesses 24 are arranged on the outer edge 10 of the sealing disc segments 16 so that the legs 22 in the axial direction away from the stop 18 and the stage 19 show.
- the strength of the sealing disc segments 16 in the region of the stepped rebate 17 is not unduly impaired by the provision of the recess 24.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10715749.7A EP2414641B1 (de) | 2009-03-31 | 2010-03-26 | Axialturbomaschinenrotor mit dichtscheibe |
| PL10715749T PL2414641T3 (pl) | 2009-03-31 | 2010-03-26 | Wirnik osiowej maszyny wirnikowej z tarczą uszczelniającą |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09004781A EP2239419A1 (de) | 2009-03-31 | 2009-03-31 | Axialturbomaschinenrotor mit Dichtscheibe |
| EP10715749.7A EP2414641B1 (de) | 2009-03-31 | 2010-03-26 | Axialturbomaschinenrotor mit dichtscheibe |
| PCT/EP2010/054001 WO2010112422A1 (de) | 2009-03-31 | 2010-03-26 | Axialturbomaschinenrotor mit dichtscheibe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2414641A1 true EP2414641A1 (de) | 2012-02-08 |
| EP2414641B1 EP2414641B1 (de) | 2013-07-03 |
Family
ID=41258149
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09004781A Withdrawn EP2239419A1 (de) | 2009-03-31 | 2009-03-31 | Axialturbomaschinenrotor mit Dichtscheibe |
| EP10715749.7A Not-in-force EP2414641B1 (de) | 2009-03-31 | 2010-03-26 | Axialturbomaschinenrotor mit dichtscheibe |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09004781A Withdrawn EP2239419A1 (de) | 2009-03-31 | 2009-03-31 | Axialturbomaschinenrotor mit Dichtscheibe |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8920121B2 (de) |
| EP (2) | EP2239419A1 (de) |
| JP (1) | JP5324700B2 (de) |
| CN (1) | CN102378850B (de) |
| ES (1) | ES2426156T3 (de) |
| PL (1) | PL2414641T3 (de) |
| WO (1) | WO2010112422A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019211091A1 (de) | 2018-05-03 | 2019-11-07 | Siemens Aktiengesellschaft | Rotor mit fliehkraft-optimierten kontaktflächen |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2982635B1 (fr) * | 2011-11-15 | 2013-11-15 | Snecma | Roue a aubes pour une turbomachine |
| US9181810B2 (en) | 2012-04-16 | 2015-11-10 | General Electric Company | System and method for covering a blade mounting region of turbine blades |
| US9803485B2 (en) | 2013-03-05 | 2017-10-31 | Rolls-Royce North American Technologies, Inc. | Turbine segmented cover plate retention method |
| FR3011032B1 (fr) * | 2013-09-25 | 2017-12-29 | Snecma | Ensemble rotatif pour turbomachine |
| EP2863019B1 (de) * | 2013-10-18 | 2017-03-29 | Siemens Aktiengesellschaft | Dichtungsanordnung |
| EP2957725A1 (de) | 2014-06-16 | 2015-12-23 | Siemens Aktiengesellschaft | Rotor mit Dichtblechen |
| GB201508040D0 (en) * | 2015-05-12 | 2015-06-24 | Rolls Royce Plc | A bladed rotor for a gas turbine engine |
| JP6613611B2 (ja) * | 2015-05-15 | 2019-12-04 | 株式会社Ihi | タービンブレード取付構造 |
| US12037926B2 (en) | 2016-02-05 | 2024-07-16 | Siemens Energy Global GmbH & Co. KG | Rotor comprising a rotor component arranged between two rotor discs |
| DE102016107315A1 (de) * | 2016-04-20 | 2017-10-26 | Rolls-Royce Deutschland Ltd & Co Kg | Rotor mit Überhang an Laufschaufeln für ein Sicherungselement |
| KR101850922B1 (ko) | 2016-10-07 | 2018-04-20 | 두산중공업 주식회사 | 가스터빈용 연소 덕트 조립체 |
| EP3438410B1 (de) | 2017-08-01 | 2021-09-29 | General Electric Company | Dichtungssystem für eine rotationsmaschine |
| CN110005637B (zh) * | 2018-01-04 | 2021-03-26 | 中国航发商用航空发动机有限责任公司 | 轴流式航空发动机转子 |
| EP3788236B1 (de) * | 2018-08-02 | 2023-06-21 | Siemens Energy Global GmbH & Co. KG | Rotor mit zwischen zwei rotorscheiben angeordnetem rotorbauteil |
| DE102018218942A1 (de) * | 2018-11-07 | 2020-05-07 | Siemens Aktiengesellschaft | Rotor mit Abdichtung zwischen Laufschaufeln |
| DE102018218944A1 (de) * | 2018-11-07 | 2020-05-07 | Siemens Aktiengesellschaft | Rotor mit Abdichtung zwischen Laufschaufeln |
| EP4013950B1 (de) * | 2019-10-18 | 2023-11-08 | Siemens Energy Global GmbH & Co. KG | Rotor mit zwischen zwei rotorscheiben angeordnetem rotorbauteil |
| US11168615B1 (en) * | 2020-08-25 | 2021-11-09 | Raytheon Technologies Corporation | Double ring axial sealing design |
| CN117897551A (zh) | 2021-08-24 | 2024-04-16 | 西门子能源全球有限两合公司 | 转子和具有转子的流体机械 |
| US12168940B1 (en) * | 2023-09-08 | 2024-12-17 | Pratt & Whitney Canada Corp. | Radial transition fit between primary and secondary parts of a rotor assembly |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2095763A (en) * | 1980-12-29 | 1982-10-06 | Rolls Royce | Enhancing turbine blade coolant seal force |
| JPS5896105A (ja) * | 1981-12-03 | 1983-06-08 | Hitachi Ltd | スペ−サ先端空気漏洩防止ロ−タ |
| US4523890A (en) * | 1983-10-19 | 1985-06-18 | General Motors Corporation | End seal for turbine blade base |
| GB8705216D0 (en) * | 1987-03-06 | 1987-04-08 | Rolls Royce Plc | Rotor assembly |
| FR2700807B1 (fr) * | 1993-01-27 | 1995-03-03 | Snecma | Système de rétention et d'étanchéité d'aubes engagées dans des brochages axiaux d'un disque de rotor. |
| US5622475A (en) * | 1994-08-30 | 1997-04-22 | General Electric Company | Double rabbet rotor blade retention assembly |
| GB2332024B (en) * | 1997-12-03 | 2000-12-13 | Rolls Royce Plc | Rotary assembly |
| US6146091A (en) * | 1998-03-03 | 2000-11-14 | Mitsubishi Heavy Industries, Ltd. | Gas turbine cooling structure |
| JPH11257015A (ja) | 1998-03-17 | 1999-09-21 | Mitsubishi Heavy Ind Ltd | ガスタービンにおけるディスクのシール構造 |
| JP3631898B2 (ja) * | 1998-03-03 | 2005-03-23 | 三菱重工業株式会社 | ガスタービンにおける分割環の冷却構造 |
| GB0307043D0 (en) * | 2003-03-26 | 2003-04-30 | Rolls Royce Plc | A method of and structure for enabling cooling of the engaging firtree features of a turbine disk and associated blades |
| US7238008B2 (en) * | 2004-05-28 | 2007-07-03 | General Electric Company | Turbine blade retainer seal |
| CN101258305B (zh) * | 2005-09-07 | 2011-06-15 | 西门子公司 | 用于对转子中的动叶片进行轴向固定的装置、用于一种这样的装置的密封件以及一种这样的装置的应用 |
-
2009
- 2009-03-31 EP EP09004781A patent/EP2239419A1/de not_active Withdrawn
-
2010
- 2010-03-26 WO PCT/EP2010/054001 patent/WO2010112422A1/de not_active Ceased
- 2010-03-26 CN CN201080014725.6A patent/CN102378850B/zh not_active Expired - Fee Related
- 2010-03-26 PL PL10715749T patent/PL2414641T3/pl unknown
- 2010-03-26 US US13/260,585 patent/US8920121B2/en not_active Expired - Fee Related
- 2010-03-26 EP EP10715749.7A patent/EP2414641B1/de not_active Not-in-force
- 2010-03-26 JP JP2012502600A patent/JP5324700B2/ja not_active Expired - Fee Related
- 2010-03-26 ES ES10715749T patent/ES2426156T3/es active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010112422A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019211091A1 (de) | 2018-05-03 | 2019-11-07 | Siemens Aktiengesellschaft | Rotor mit fliehkraft-optimierten kontaktflächen |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2426156T3 (es) | 2013-10-21 |
| US8920121B2 (en) | 2014-12-30 |
| EP2239419A1 (de) | 2010-10-13 |
| JP2012522169A (ja) | 2012-09-20 |
| JP5324700B2 (ja) | 2013-10-23 |
| WO2010112422A1 (de) | 2010-10-07 |
| CN102378850B (zh) | 2014-07-16 |
| PL2414641T3 (pl) | 2013-12-31 |
| US20120034087A1 (en) | 2012-02-09 |
| EP2414641B1 (de) | 2013-07-03 |
| CN102378850A (zh) | 2012-03-14 |
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