EP2076656A1 - Schaufelbefestigung einer turbine - Google Patents
Schaufelbefestigung einer turbineInfo
- Publication number
- EP2076656A1 EP2076656A1 EP07802464A EP07802464A EP2076656A1 EP 2076656 A1 EP2076656 A1 EP 2076656A1 EP 07802464 A EP07802464 A EP 07802464A EP 07802464 A EP07802464 A EP 07802464A EP 2076656 A1 EP2076656 A1 EP 2076656A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbine blade
- wedge
- securing
- traction means
- blade
- 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
- 238000005452 bending Methods 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 2
- 238000002788 crimping Methods 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 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
- 238000005259 measurement Methods 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
- F04D29/322—Blade mountings
-
- 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
- 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
- F01D5/32—Locking, e.g. by final locking blades or keys
- F01D5/326—Locking of axial insertion type blades by other means
Definitions
- the invention relates to a turbine blade securing device for a turbomachine.
- Blade fasteners of the above type are usually used for mounting blades on a rotor of a turbomachine, such as a steam turbine, which rotate at high speed when the rotor rotates ⁇ speed. Due to the fast rotation of the rotor, the associated blades are subjected to high centrifugal force. The blade root of the blades is therefore exposed to high forces and is strongly forced radially outward in a groove on the blade holder. In addition, the blades are exposed to strong vibration loads, so that it can come to the groove to mechanical damage, material fatigue, corrosion and a wandering movement of the blade root within the groove.
- a turbine blade securing comprising a wedge movable in an axial direction, wherein a traction means cooperates with the wedge such that the wedge is movable in the axial direction by the traction means, wherein the wedge is formed such that the movement of the wedge in axial direction leads to a force on a turbine blade to be secured in the radial direction.
- the invention proceeds from the idea that the secured turbine blade, which is held in a blade holder secured by a radially acting force ⁇ the must.
- the traction device takes on the task of moving the wedge in the axial direction. By the movement of the wedge creates a radial force acting on the turbine blade in a radial direction. By a minimal movement of the turbine blade in the radial direction of the blade root is pressed into the blade holder. The turbine blade is thereby secured in such a way that a tilting movement is almost avoided.
- the wedge is inserted ⁇ at a corresponding rotor-surface abutment surface.
- the wedge is proposed in this advantageous ⁇ further development to apply the wedge on a corresponding oblique wedge surface in the blade holder. This has the advantage that the blade root does not have to be processed. In addition, this has a favorable effect on the power flow in the foot.
- a milled part which has the rotor surface contact surface. This has the advantage that the blade holder only needs to be executed with a groove and that a milled ⁇ can be placed in the groove.
- the milled part can be prefabricated in large quantities. The blade holder can thereby be easily manufactured, since only one groove is needed.
- the traction means has a thread which engages in a complementary countercurrent ⁇ winch in the wedge.
- the traction means is further developed by simple means such that it can be produced easily.
- the wedge moves by turning the traction mechanism.
- the transmittable force on the turbine blade root is under Kunststoff ⁇ Lich.
- a securing segment is provided, which is designed such that an unintentional release of the traction means is prevented by the wedge. This makes it possible to platzie ⁇ ren, with a release by the securing segment ruled to be the wedge safely and securely.
- the securing segment is performed as a sheet of ⁇ and carried out the fuse of the traction means by bending over or flanging of the plate on the traction means. This makes it very easy the traction means, the course one
- Screw head or the like with the Sich ceremoniessseg ⁇ ment secure.
- a simple bending of the sheet is sufficient to secure the traction means.
- a securing means for exerting a spring force in the radial direction is provided. The locking device compensates for a groove widening for small speed ranges.
- the securing means is designed as a plate ⁇ spring.
- FIG. 1 is a perspective view of the turbine blade guard in the installed state
- FIG. 2 shows a sectional view through the turbine blade fuse
- Figure 3 is an enlarged view of a Sectionaus ⁇ -section of Figure 2
- Figure 4 is a perspective view of the
- FIG. 5 shows a perspective view of an alternative embodiment of the turbine windshield fuse without installed turbine blade
- Figure 6 is a cross-sectional view of an alternative
- FIG. 7 shows an enlarged view of a detail from FIG. 6,
- FIG. 1 shows a perspective view of a turbine blade safety device 1.
- a turbine blade 2 comprises a blade root 3.
- the blade root 3 is designed in a known manner as a fir tree root.
- the blade root 3 is arranged in a blade holder 4.
- the blade holder 4 accordingly has a blade root 3 complementarily formed ⁇ fir tree shape.
- the turbine blade 2 must be secured ⁇ well in the axial direction 5 and 6 in the radial direction.
- the blade holder 4 may be, for example, a rotor.
- FIG. 2 shows a turbine blade securing device 1 in a sectional view.
- the turbine blade safety device 1 comprises a wedge 7 which can be moved in the axial direction 5, wherein a traction means 8 interacts with the wedge 7 such that the wedge 7 can be moved in the axial direction 5 by the traction means 8.
- the wedge 7 abuts against a turbine blade root abutment surface 9.
- the movement of the wedge 7 against the turbine blade root abutment surface 9 creates a force in the radial direction 6.
- the traction means 8 comprises a thread 10.
- the wedge 7 has the ⁇ accordingly a bore 11 with a corresponding counter-thread 12.
- a turning of the traction means 8 causes a Be ⁇ movement of the wedge 7 in the axial direction 5.
- the traction means 8 in this case has a conventional screw head 13.
- the screw head 13 may be formed as a hexagon 14 and moved with a standard open-end wrench. It can be set here a predetermined torque.
- the turbine blade guard 1 is formed with a securing segment 15.
- the securing segment 15 prevents unintentional release of the pulling means 8 from the wedge 7.
- the securing segment 15 is designed as a sheet.
- the securing of the traction means 8 takes place by bending over or flanging the sheet around the traction means 8. Of course, be bent 13 of course, thereby avoiding rotation of the traction device 8.
- the turbine blade safety device 1 also has a securing means 16, which is designed to exert a spring force in the radial direction 6.
- the securing means 16 is formed as a plate spring for ⁇ and rungsnut in a Siche arranged 17th
- the wedge 7 is elongated and arranged in a matching groove 18.
- FIG. 5 shows an alternative embodiment of the turbine blade safety device 1.
- the turbine blade 2 has been omitted, so that only the blade holder 4 can be seen.
- the blade holder 4 is in this case formed with a corresponding groove 19.
- a milled part 20 is arranged in the groove 19.
- the milled part 20 has a rotor surface contact surface 21.
- the Rotoroberflä ⁇ chen-contact surface 21 is to transmit the same function as the turbine blade root abutment face 9, namely a force of the wedge 7 in the radial direction 6 substantially.
- the securing means 16 is in this case arranged between the wedge 7 and the turbine blade 2.
- the securing means 16 assumes the same tasks as described for FIGS. 2 and 3.
- FIG. 6 shows a sectional illustration through the turbine blade safety device 1.
- inventive arrangement of Switzerlandmit ⁇ tel and wedge at the ends 21, 22 is arranged.
- figure 7 is an enlarged view of the turbine blade fuse 1 of Figure 6 can be seen.
- FIG. 8 is a perspective view of the blade holder 4 can be seen, wherein the traction means 8 and the
- FIG. 8 impressively shows that the milled part 20 is easy to manufacture and can be easily mounted in the blade holder 4.
- the milled part 20 may be circular at its ends. This has the advantage that it can be minimized notch stresses.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Connection Of Plates (AREA)
- Installation Of Indoor Wiring (AREA)
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07802464A EP2076656B1 (de) | 2006-08-25 | 2007-08-02 | Schaufelbefestigung einer turbine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06017818A EP1892380A1 (de) | 2006-08-25 | 2006-08-25 | Schaufelbefestigung einer Turbine |
| PCT/EP2007/058001 WO2008022890A1 (de) | 2006-08-25 | 2007-08-02 | Schaufelbefestigung einer turbine |
| EP07802464A EP2076656B1 (de) | 2006-08-25 | 2007-08-02 | Schaufelbefestigung einer turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2076656A1 true EP2076656A1 (de) | 2009-07-08 |
| EP2076656B1 EP2076656B1 (de) | 2010-03-03 |
Family
ID=37685152
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06017818A Withdrawn EP1892380A1 (de) | 2006-08-25 | 2006-08-25 | Schaufelbefestigung einer Turbine |
| EP07802464A Not-in-force EP2076656B1 (de) | 2006-08-25 | 2007-08-02 | Schaufelbefestigung einer turbine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06017818A Withdrawn EP1892380A1 (de) | 2006-08-25 | 2006-08-25 | Schaufelbefestigung einer Turbine |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8192167B2 (de) |
| EP (2) | EP1892380A1 (de) |
| JP (1) | JP2010501765A (de) |
| CN (1) | CN101506475B (de) |
| AT (1) | ATE459786T1 (de) |
| DE (1) | DE502007003039D1 (de) |
| WO (1) | WO2008022890A1 (de) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2299060A1 (de) | 2009-09-17 | 2011-03-23 | Siemens Aktiengesellschaft | Schaufelbefestigung mit Sicherheitseinrichtung für Turbinenschaufeln |
| FR2963383B1 (fr) * | 2010-07-27 | 2016-09-09 | Snecma | Aube de turbomachine, rotor, turbine basse pression et turbomachine equipes d'une telle aube |
| JP5675674B2 (ja) * | 2012-02-29 | 2015-02-25 | 三菱重工業株式会社 | タービン動翼の抜け止め構造およびこれを備えた回転機械 |
| DE102012213227B3 (de) * | 2012-07-27 | 2013-09-26 | Siemens Aktiengesellschaft | Schaufelkranz für eine Turbomaschine |
| EP2711504A1 (de) * | 2012-09-19 | 2014-03-26 | Siemens Aktiengesellschaft | Vorrichtung zum Überbrücken eines Spiels |
| US20140199172A1 (en) | 2013-01-11 | 2014-07-17 | General Electric Company | Turbomachine and method of handling turbomachine components |
| EP2816196A1 (de) * | 2013-06-21 | 2014-12-24 | Siemens Aktiengesellschaft | Schaufelbefestigung für Turbinenschaufeln und zugehöriger Rotor |
| US9739160B2 (en) | 2013-10-18 | 2017-08-22 | Siemens Aktiengesellschaft | Adjustable blade root spring for turbine blade fixation in turbomachinery |
| US9909431B2 (en) | 2013-10-18 | 2018-03-06 | Siemens Energy, Inc. | Variable dual spring blade root support for gas turbines |
| WO2015129580A1 (ja) * | 2014-02-26 | 2015-09-03 | 三菱日立パワーシステムズ株式会社 | 動翼保持装置、動翼固定部材押込装置、回転機械の製造方法、組立方法、解体方法 |
| JP6329471B2 (ja) * | 2014-09-26 | 2018-05-23 | 新日本造機株式会社 | タービン |
| KR102182102B1 (ko) * | 2014-11-27 | 2020-11-23 | 한화에어로스페이스 주식회사 | 터빈 장치 |
| EP3048256A1 (de) | 2015-01-20 | 2016-07-27 | Siemens Aktiengesellschaft | Rotor umfassend eine Turbinenschaufel mit einer Sicherungseinrichtung |
| GB201504186D0 (en) * | 2015-03-12 | 2015-04-29 | Rolls Royce Plc | Chocking and retaining device |
| US9844855B1 (en) * | 2016-06-21 | 2017-12-19 | Po-Shen Chen | Workpiece clamp device with single side |
| FR3057908B1 (fr) * | 2016-10-21 | 2019-11-22 | Safran Aircraft Engines | Ensemble rotatif d'une turbomachine muni d'un systeme de maintien axial d'une aube |
| IT201600130088A1 (it) * | 2016-12-22 | 2018-06-22 | Nuovo Pignone Tecnologie Srl | Pala di turbina e set di fissaggio |
| KR102095033B1 (ko) * | 2017-05-30 | 2020-03-30 | 두산중공업 주식회사 | 베인 링 조립체 및 이를 포함하는 압축기, 가스터빈 |
| FR3102206B1 (fr) * | 2019-10-18 | 2023-02-17 | Safran Aircraft Engines | Ensemble pour une aube de turbomachine comprenant une attache définissant une alvéole et une cale adaptée pour être reçue dans l’alvéole en même temps qu’un pied de l’aube |
| IT202000003895A1 (it) | 2020-02-25 | 2021-08-25 | Nuovo Pignone Tecnologie Srl | Metodo per fornire interferenza di protezione alle lame ad entrata assiale in una macchina rotativa e macchina rotativa. |
| KR102388988B1 (ko) * | 2020-08-25 | 2022-04-20 | 두산중공업 주식회사 | 로터 및 이를 포함하는 터보머신 |
| CN114109512B (zh) | 2020-08-25 | 2024-09-24 | 通用电气公司 | 叶片燕尾榫和保持设备 |
| CN112628198B (zh) * | 2020-12-23 | 2022-09-06 | 沈阳理工大学 | 一种安装边防外翻的航空发动机多级盘及其使用方法 |
| KR102478172B1 (ko) * | 2021-02-02 | 2022-12-14 | 두산에너빌리티 주식회사 | 회전 기계, 이를 포함하는 가스 터빈, 회전 기계의 조립 방법 |
| FR3121954B1 (fr) * | 2021-04-20 | 2023-07-14 | Safran Aircraft Engines | Dispositif de calage d’un pied d’aube dans une alveole d’un disque de rotor de turbomachine |
| KR102703146B1 (ko) * | 2022-01-14 | 2024-09-04 | 두산에너빌리티 주식회사 | 블레이드 고정 조립체, 이를 포함하는 가스 터빈 및 가스 터빈 제조 방법 |
| KR102703143B1 (ko) * | 2022-01-14 | 2024-09-04 | 두산에너빌리티 주식회사 | 블레이드 고정 조립체, 이를 포함하는 가스 터빈 및 가스 터빈 제조 방법 |
| FR3132078B1 (fr) * | 2022-01-24 | 2023-12-08 | Safran Aircraft Engines | Ensemble de fixation pour une aube pour turbomachine |
| CN115773278B (zh) * | 2022-12-21 | 2024-02-13 | 无锡市盛禾泰业涡轮增压器有限公司 | 一种用于涡轮增压器的多级叶轮结构 |
| KR102803494B1 (ko) | 2023-01-27 | 2025-05-02 | 두산에너빌리티 주식회사 | 로터 디스크 어셈블리 및 이를 포함하는 가스 터빈 |
| FR3147602B1 (fr) * | 2023-04-05 | 2025-03-14 | Alpinov X | Rotor pour la compression de gaz aqueux à aube fixée à un support via au moins un système d’assemblage |
| US12065948B1 (en) * | 2023-06-09 | 2024-08-20 | Rtx Corporation | Blade spacer |
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| DE834408C (de) * | 1950-11-23 | 1952-03-20 | Maschf Augsburg Nuernberg Ag | Vorverspannte axiale Schaufelfussbefestigung fuer Dampf- und Gasturbinen |
| US2942842A (en) * | 1956-06-13 | 1960-06-28 | Gen Motors Corp | Turbine blade lock |
| JPS5738603A (en) * | 1980-08-15 | 1982-03-03 | Hitachi Ltd | Fixing construction of rotary machine blade |
| JPS57198301A (en) | 1981-05-29 | 1982-12-04 | Matsushita Electric Ind Co Ltd | Laminated rotor |
| JPS57198301U (de) * | 1981-06-15 | 1982-12-16 | ||
| JPS5997207A (ja) | 1982-11-26 | 1984-06-05 | Nippon Telegr & Teleph Corp <Ntt> | 移動局ダイバ−シチアンテナ装置 |
| JPS5997207U (ja) * | 1982-12-22 | 1984-07-02 | 株式会社東芝 | タ−ビン羽根固定装置 |
| JPS59192801A (ja) * | 1983-04-15 | 1984-11-01 | Hitachi Ltd | 着脱容易な動翼固定方法 |
| US4778342A (en) * | 1985-07-24 | 1988-10-18 | Imo Delaval, Inc. | Turbine blade retainer |
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| US4850801A (en) * | 1987-12-21 | 1989-07-25 | United Technologies Corporation | Aircraft propeller blade retention |
| JP2516690B2 (ja) * | 1988-09-14 | 1996-07-24 | ウエスチングハウス・エレクトリック・コーポレーション | 予荷重力の付与装置 |
| US5263898A (en) * | 1988-12-14 | 1993-11-23 | General Electric Company | Propeller blade retention system |
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| US5236309A (en) * | 1991-04-29 | 1993-08-17 | Westinghouse Electric Corp. | Turbine blade assembly |
| US5431542A (en) * | 1994-04-29 | 1995-07-11 | United Technologies Corporation | Ramped dovetail rails for rotor blade assembly |
| JPH10299407A (ja) * | 1997-04-22 | 1998-11-10 | Hitachi Ltd | ガスタービンエンジンのロータ |
| JPH11182494A (ja) | 1997-12-22 | 1999-07-06 | Toshiba Corp | 軸流圧縮機 |
| US5984639A (en) * | 1998-07-09 | 1999-11-16 | Pratt & Whitney Canada Inc. | Blade retention apparatus for gas turbine rotor |
| US6213719B1 (en) | 1999-07-28 | 2001-04-10 | United Technologies Corporation | Bar wedge preload apparatus for a propeller blade |
| DE10120532A1 (de) * | 2001-04-26 | 2002-10-31 | Alstom Switzerland Ltd | Vorrichtung und Verfahren zur Befestigung einer Laufschaufel längs einer innerhalb eines Rotors einer axial durchströmten Turbomaschine verlaufenden Umfangsnut |
| US6796769B2 (en) * | 2002-10-02 | 2004-09-28 | General Electric Company | Radial retainer for single lobe turbine blade attachment and method for radially retaining a turbine blade in a turbine blade slot |
| EP1643082A1 (de) * | 2004-09-30 | 2006-04-05 | Siemens Aktiengesellschaft | Schaufelbefestigung einer Turbine |
-
2006
- 2006-08-25 EP EP06017818A patent/EP1892380A1/de not_active Withdrawn
-
2007
- 2007-08-02 WO PCT/EP2007/058001 patent/WO2008022890A1/de not_active Ceased
- 2007-08-02 JP JP2009524997A patent/JP2010501765A/ja active Pending
- 2007-08-02 CN CN2007800316835A patent/CN101506475B/zh not_active Expired - Fee Related
- 2007-08-02 EP EP07802464A patent/EP2076656B1/de not_active Not-in-force
- 2007-08-02 US US12/310,412 patent/US8192167B2/en not_active Expired - Fee Related
- 2007-08-02 DE DE502007003039T patent/DE502007003039D1/de active Active
- 2007-08-02 AT AT07802464T patent/ATE459786T1/de active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008022890A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1892380A1 (de) | 2008-02-27 |
| WO2008022890A1 (de) | 2008-02-28 |
| CN101506475A (zh) | 2009-08-12 |
| EP2076656B1 (de) | 2010-03-03 |
| DE502007003039D1 (de) | 2010-04-15 |
| ATE459786T1 (de) | 2010-03-15 |
| US8192167B2 (en) | 2012-06-05 |
| CN101506475B (zh) | 2013-01-23 |
| JP2010501765A (ja) | 2010-01-21 |
| US20090324414A1 (en) | 2009-12-31 |
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