EP2299060A1 - Fixation des aubes avec dispositif de verrouillage pour aubes de turbines - Google Patents
Fixation des aubes avec dispositif de verrouillage pour aubes de turbines Download PDFInfo
- Publication number
- EP2299060A1 EP2299060A1 EP09011885A EP09011885A EP2299060A1 EP 2299060 A1 EP2299060 A1 EP 2299060A1 EP 09011885 A EP09011885 A EP 09011885A EP 09011885 A EP09011885 A EP 09011885A EP 2299060 A1 EP2299060 A1 EP 2299060A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- turbine blade
- groove
- clamping piece
- blade root
- 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- Withdrawn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
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
- 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
- F01D5/323—Locking of axial insertion type blades by means of a key or the like parallel to the axis of the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/30—Retaining components in desired mutual position
- F05B2260/301—Retaining bolts or nuts
- F05B2260/3011—Retaining bolts or nuts of the frangible or shear type
-
- 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
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
Definitions
- the invention relates to a rotor comprising at least one turbine blade and a securing device for axial and radial securing of the turbine blade, wherein the rotor comprises a blade groove and the turbine blade comprises a turbine blade root, wherein the blade groove and the turbine blade root are formed such that the turbine blade root is adapted in the blade groove is.
- Blade fasteners are typically used to secure blades to a rotor of a turbomachine, particularly a steam turbine. Due to the comparatively fast rotation of the rotor, the blades arranged on the rotor are exposed to high centrifugal forces. The turbine blade root of the turbine blades must therefore withstand high forces and is urged radially outward in the blade groove. In addition to the centrifugal forces, strong vibration loads pose a further problem that can result in mechanical damage, material fatigue, corrosion and migration of the blade root within the blade groove. For fixing the turbine blade root within the blade groove, various solutions such as metal wedges, spring washers or sealing pieces are known.
- the invention has for its object to provide a blade mounting a turbomachine in which over a long period of operation, a precise and firm support of blades, in associated blade holders, is ensured.
- a rotor comprising at least one turbine blade, wherein the rotor comprises a blade groove and the turbine blade comprises a turbine blade root, wherein the blade groove and the turbine blade root are configured such that the turbine blade root is adapted in the blade groove, wherein the securing device has a shear pin which juts into a hole in the turbine blade foot.
- the invention is based on the idea that both a radial and an axial securing can be arranged in a blade groove.
- the shear pin is placed in a corresponding bore in the turbine blade root and is advantageously at an edge on the rotor. As a result, an axial movement of the turbine blade root is not possible. If a shear pin is arranged on both the leading edge and the trailing edge of the turbine blade root, an axial displacement of the turbine blade root in one direction as well as in the other direction is effectively prevented.
- the shear pin is in this case installed in a groove arranged in the rotor.
- the shear pin is installed after the turbine blade has been installed in the rotor in the corresponding blade groove.
- the securing device has a clamping piece which exerts a radial force from the rotor onto the turbine blade root.
- the clamping piece is in this case arranged in a groove located in the rotor, wherein the groove may be the same as the groove in which the shear pin is arranged.
- the size of the clamping piece is chosen such that a force is generated which acts in the radial direction. This means that the turbine blade is pressed against the support flanks of the blade groove. Up to a certain rotational frequency thus a movement of the blades in the groove is effectively prevented. From a certain rotational frequency, the centrifugal forces are so great that a movement is prevented by the concern with the support flanks. However, it is almost inevitable that the turbine blade vibrates despite labbefest Trent.
- the attachment according to the invention also prevents a relative movement between the turbine blade root and the blade groove, whereby surface damage is reduced.
- the clamping piece has an upper leg and a lower leg, wherein the upper leg rests on the turbine blade root and exerts a force against the turbine blade root in the radial direction.
- the lower leg rests against the rotor.
- the invention is characterized in that the upper leg and the lower leg substantially form a V-shape and by skillful material selection a spring force is exerted, which acts from the rotor to the turbine blade root in the radial direction.
- shear pin is on the lower leg.
- a securing element is used, which is designed to secure the clamping piece.
- the clamping piece is designed as a locking plate and disposed between the clamping piece and the rotor.
- FIG. 1 shows a side view of a portion of a rotor 1 with a built-turbine blade 2.
- the turbine blade 2 has a turbine blade root 3, which is adapted in a corresponding blade groove 4.
- the turbine blade 2 is inserted in the axial direction 5 in the blade groove 4.
- the blade groove 4 is formed as Tannenbaumschaufelnut and includes a plurality of support flanks. 6
- the turbine blade 2 is secured in the blade groove 4 both in the axial direction 5 and in the radial direction 29.
- the radial direction 29 substantially corresponds to the longitudinal orientation of the turbine blade 2 and the axial direction 5 substantially corresponds to the axis of rotation which is in the FIG. 1 not shown in detail.
- the turbine blade root 3 is in this case designed such that it is adapted to the blade groove 4, d. H. in the axial direction 5 can be moved substantially.
- FIG. 2 is a sectional view through a portion of the rotor 1 shown.
- the securing device 7 essentially comprises three components. These would be a shear pin 8, a clamping piece 9 and a securing element 10.
- the securing device 7 is arranged in a corresponding groove 11 in the rotor 1. This groove 11 is formed both at the steam inlet side 12 and at the steam outlet side 13.
- the installation of at least two securing devices 7, ie both at the steam inlet side 12 and at the steam outlet side 13, offers the advantage that the turbine blade 2 can no longer be displaced in the axial direction 5.
- the operation and the installation of the securing device 7 are based on the FIG. 3 explained in more detail.
- the shear pin 8 is cylindrical and has a length L which is less than the groove height 14 of the groove 11. This allows easy insertion of the shear pin 8 in the groove 11 is possible.
- the shear pin 8 is placed in a bore 15 which is located in the blade root 3.
- the bore 15 and the groove 11 are formed such that in the installed state, the shear pin 8 rests against an edge 16 in the rotor 1. A displacement of the turbine blade root 3 in the axial direction 5 is thus no longer possible.
- FIGS. 4 and 5 Another element of the securing device 7 forms the clamping piece 9.
- the clamping piece 9 with a base body 17 which is cuboid-shaped and an upper leg 18 and a lower leg 19 executed. Between the upper leg 18 and the lower leg 19, a gap 20 is formed.
- the dimensions of the clamping piece 9 are chosen such that the height 21 of the clamping piece 9 is less than the groove height 14. An insertion of the clamping piece 9 in the blade groove 4 is therefore easily possible.
- the dimensions are further chosen such that in the installed state, the upper leg 18 presses a force which resembles a spring force against the turbine blade root 3.
- the upper leg 18 has for this purpose a projection 22 which is approximately one third of the length of the clamping piece 9.
- Both the upper leg 18 and the lower leg 19 are designed wedge-shaped, ie from the main body 17 in the direction of legs 18, 19, the upper leg 18 and the lower leg 19 are tapered.
- FIG. 6 shows a perspective view of the shear pin 8.
- a third element of the securing device 7 is the securing element 10, which is designed as a locking plate.
- the fuse element 10 is based on the FIG. 7 explained in more detail.
- the securing element 10 is formed as an elongated sheet metal piece, which is once folded completely at its tip 23, whereby a Lead 28 is created. When installed, this projection 28 abuts in a corresponding securing groove 24. As in FIG. 3 illustrated, thereby an axial displacement of the securing element 5 10 is effectively avoided.
- the securing element 10 has an end piece 26 which is bent perpendicular to the bending point 27 in relation to a main piece 25.
- the safety device 7 is now installed as follows: first, the turbine blade 2 is introduced into the corresponding blade groove 4. Subsequently, the shear pin 8 is adjusted in the corresponding hole 15.
- the securing element 10 is inserted in the unbent state and has at the tip 23 a projection 28 which is arranged in a corresponding securing groove 24.
- the clamping piece 9 is pushed onto the securing element 10 in the groove 11 such that the shear pin 8 rests on the lower leg 19. Falling out of the shear pin 8 from the bore 15 is thereby avoided.
- the securing element 10 is inserted in the unbent state and has at the tip 23 a projection 28 which is arranged in a corresponding securing groove 24.
- the securing element 10 is finally bent at the bending point 27, whereby falling out of the clamping piece 9 from the groove 11 is effectively avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09011885A EP2299060A1 (fr) | 2009-09-17 | 2009-09-17 | Fixation des aubes avec dispositif de verrouillage pour aubes de turbines |
PCT/EP2010/063701 WO2011033063A1 (fr) | 2009-09-17 | 2010-09-17 | Fixation d'aube avec dispositif de sécurité pour aubes de turbine |
US13/496,096 US8956122B2 (en) | 2009-09-17 | 2010-09-17 | Blade fastening having safety device for turbine blades |
EP10755152.5A EP2478187B1 (fr) | 2009-09-17 | 2010-09-17 | Fixation des aubes avec dispositif de verrouillage pour aubes de turbines |
CN201080041454.3A CN102498264B (zh) | 2009-09-17 | 2010-09-17 | 具有用于涡轮叶片的固定装置的叶片固定装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09011885A EP2299060A1 (fr) | 2009-09-17 | 2009-09-17 | Fixation des aubes avec dispositif de verrouillage pour aubes de turbines |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2299060A1 true EP2299060A1 (fr) | 2011-03-23 |
Family
ID=41566145
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09011885A Withdrawn EP2299060A1 (fr) | 2009-09-17 | 2009-09-17 | Fixation des aubes avec dispositif de verrouillage pour aubes de turbines |
EP10755152.5A Not-in-force EP2478187B1 (fr) | 2009-09-17 | 2010-09-17 | Fixation des aubes avec dispositif de verrouillage pour aubes de turbines |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10755152.5A Not-in-force EP2478187B1 (fr) | 2009-09-17 | 2010-09-17 | Fixation des aubes avec dispositif de verrouillage pour aubes de turbines |
Country Status (4)
Country | Link |
---|---|
US (1) | US8956122B2 (fr) |
EP (2) | EP2299060A1 (fr) |
CN (1) | CN102498264B (fr) |
WO (1) | WO2011033063A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3048256A1 (fr) * | 2015-01-20 | 2016-07-27 | Siemens Aktiengesellschaft | Rotor comportant une aube de turbine avec un dispositif de verrouillage |
EP3650652A1 (fr) * | 2018-11-08 | 2020-05-13 | Doosan Skoda Power S.r.o. | Fixation d'aube de turbine avec pied en forme d'arbre au rotor de turbine avec cale déformable et élément de fixation |
DE102014100090B4 (de) | 2013-01-11 | 2023-06-07 | General Electric Company | Turbomaschine und Verfahren zur Handhabung von Turbomaschinenkomponenten |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT201600130088A1 (it) * | 2016-12-22 | 2018-06-22 | Nuovo Pignone Tecnologie Srl | Pala di turbina e set di fissaggio |
US10385874B2 (en) * | 2017-05-08 | 2019-08-20 | Solar Turbines Incorporated | Pin to reduce relative rotational movement of disk and spacer of turbine engine |
KR102400013B1 (ko) | 2020-08-21 | 2022-05-18 | 두산에너빌리티 주식회사 | 터빈 블레이드의 씰 조립구조와 이를 포함하는 가스 터빈 및 터빈 블레이드의 씰 조립방법 |
KR102478172B1 (ko) | 2021-02-02 | 2022-12-14 | 두산에너빌리티 주식회사 | 회전 기계, 이를 포함하는 가스 터빈, 회전 기계의 조립 방법 |
KR102585387B1 (ko) * | 2021-08-19 | 2023-10-05 | 두산에너빌리티 주식회사 | 블레이드 고정구조 및 이를 포함하는 로터, 압축기, 가스터빈, 블레이드 고정방법 |
JP7414941B1 (ja) | 2022-11-29 | 2024-01-16 | 株式会社東芝 | タービン動翼の固定構造 |
US12012871B1 (en) | 2023-01-31 | 2024-06-18 | Doosan Enerbility Co., Ltd. | Blade fastening assembly and gas turbine including same |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2963271A (en) * | 1956-07-19 | 1960-12-06 | Gen Motors Corp | Turbine blade locking |
FR2323908A1 (fr) * | 1975-09-11 | 1977-04-08 | Alsthom Cgee | Dispositif de blocage d'une piece montee dans une rainure |
EP0597586A1 (fr) * | 1992-11-11 | 1994-05-18 | ROLLS-ROYCE plc | Montage d'aube pour turbomoteur à ventilateur caréné |
EP0712995A1 (fr) * | 1994-11-19 | 1996-05-22 | ABB Management AG | Rotor portant des aubes |
GB2410531A (en) * | 2004-01-29 | 2005-08-03 | Rolls Royce Plc | Screw tightened fan blade locking lever |
EP1619354A1 (fr) * | 2004-07-22 | 2006-01-25 | Siemens Aktiengesellschaft | Dispositif pour fixer une aube à un disque rotorique de turbomachine, turbomachine et procédé pour le montage et démontage d'une aube au disque rotorique d'une turbomachine |
EP1892380A1 (fr) * | 2006-08-25 | 2008-02-27 | Siemens Aktiengesellschaft | Fixation d'aubes de turbine |
US20090010762A1 (en) * | 2007-04-27 | 2009-01-08 | Snecma | Damper for turbomachine vanes |
EP2090750A1 (fr) * | 2008-02-14 | 2009-08-19 | Siemens Aktiengesellschaft | Rotor de turbomachine, aube rotorique pour un tel rotor de turbomachine, languette de calage et procédé d'assemblage associé |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB402061A (en) | 1932-04-21 | 1933-11-21 | Gen Electric Co Ltd | Improvements in thermostatic switches |
EP1905957A1 (fr) * | 2006-09-27 | 2008-04-02 | Siemens Aktiengesellschaft | Dispositif de fixation d'une aube de turbine |
US9103221B2 (en) * | 2012-02-16 | 2015-08-11 | Alstom Technology Ltd | System and method for blade retention |
-
2009
- 2009-09-17 EP EP09011885A patent/EP2299060A1/fr not_active Withdrawn
-
2010
- 2010-09-17 CN CN201080041454.3A patent/CN102498264B/zh not_active Expired - Fee Related
- 2010-09-17 EP EP10755152.5A patent/EP2478187B1/fr not_active Not-in-force
- 2010-09-17 US US13/496,096 patent/US8956122B2/en not_active Expired - Fee Related
- 2010-09-17 WO PCT/EP2010/063701 patent/WO2011033063A1/fr active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2963271A (en) * | 1956-07-19 | 1960-12-06 | Gen Motors Corp | Turbine blade locking |
FR2323908A1 (fr) * | 1975-09-11 | 1977-04-08 | Alsthom Cgee | Dispositif de blocage d'une piece montee dans une rainure |
EP0597586A1 (fr) * | 1992-11-11 | 1994-05-18 | ROLLS-ROYCE plc | Montage d'aube pour turbomoteur à ventilateur caréné |
EP0712995A1 (fr) * | 1994-11-19 | 1996-05-22 | ABB Management AG | Rotor portant des aubes |
GB2410531A (en) * | 2004-01-29 | 2005-08-03 | Rolls Royce Plc | Screw tightened fan blade locking lever |
EP1619354A1 (fr) * | 2004-07-22 | 2006-01-25 | Siemens Aktiengesellschaft | Dispositif pour fixer une aube à un disque rotorique de turbomachine, turbomachine et procédé pour le montage et démontage d'une aube au disque rotorique d'une turbomachine |
EP1892380A1 (fr) * | 2006-08-25 | 2008-02-27 | Siemens Aktiengesellschaft | Fixation d'aubes de turbine |
US20090010762A1 (en) * | 2007-04-27 | 2009-01-08 | Snecma | Damper for turbomachine vanes |
EP2090750A1 (fr) * | 2008-02-14 | 2009-08-19 | Siemens Aktiengesellschaft | Rotor de turbomachine, aube rotorique pour un tel rotor de turbomachine, languette de calage et procédé d'assemblage associé |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014100090B4 (de) | 2013-01-11 | 2023-06-07 | General Electric Company | Turbomaschine und Verfahren zur Handhabung von Turbomaschinenkomponenten |
EP3048256A1 (fr) * | 2015-01-20 | 2016-07-27 | Siemens Aktiengesellschaft | Rotor comportant une aube de turbine avec un dispositif de verrouillage |
US10487674B2 (en) | 2015-01-20 | 2019-11-26 | Siemens Aktiengesellschaft | Blade fastening mechanism having a securing device for turbine blades |
EP3650652A1 (fr) * | 2018-11-08 | 2020-05-13 | Doosan Skoda Power S.r.o. | Fixation d'aube de turbine avec pied en forme d'arbre au rotor de turbine avec cale déformable et élément de fixation |
Also Published As
Publication number | Publication date |
---|---|
US8956122B2 (en) | 2015-02-17 |
US20120177499A1 (en) | 2012-07-12 |
WO2011033063A1 (fr) | 2011-03-24 |
EP2478187A1 (fr) | 2012-07-25 |
EP2478187B1 (fr) | 2013-07-03 |
CN102498264A (zh) | 2012-06-13 |
CN102498264B (zh) | 2015-02-25 |
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Effective date: 20110924 |