EP1892380A1 - Schaufelbefestigung einer Turbine - Google Patents

Schaufelbefestigung einer Turbine Download PDF

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Publication number
EP1892380A1
EP1892380A1 EP06017818A EP06017818A EP1892380A1 EP 1892380 A1 EP1892380 A1 EP 1892380A1 EP 06017818 A EP06017818 A EP 06017818A EP 06017818 A EP06017818 A EP 06017818A EP 1892380 A1 EP1892380 A1 EP 1892380A1
Authority
EP
European Patent Office
Prior art keywords
turbine blade
wedge
safety device
securing
traction means
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Withdrawn
Application number
EP06017818A
Other languages
German (de)
English (en)
French (fr)
Inventor
Thomas Helmis
Michael Kleinhaus
Christoph Dr. Richter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP06017818A priority Critical patent/EP1892380A1/de
Priority to JP2009524997A priority patent/JP2010501765A/ja
Priority to US12/310,412 priority patent/US8192167B2/en
Priority to EP07802464A priority patent/EP2076656B1/de
Priority to AT07802464T priority patent/ATE459786T1/de
Priority to CN2007800316835A priority patent/CN101506475B/zh
Priority to DE502007003039T priority patent/DE502007003039D1/de
Priority to PCT/EP2007/058001 priority patent/WO2008022890A1/de
Publication of EP1892380A1 publication Critical patent/EP1892380A1/de
Withdrawn legal-status Critical Current

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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 typically used for mounting blades on a rotor of a turbomachine, such as a steam turbine, which rotate at high speed during rotation of the rotor. 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 migration of the blade root within the groove.
  • the object of the invention is to provide a turbine blade securing device in which a precise and low-vibration mounting of turbine blades in associated blade holders is ensured over a long period of operation.
  • 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 is based on the idea that the turbine blade to be secured, which is held in a blade holder, must be secured by a radially acting force.
  • the traction device takes on the task of moving the wedge in the axial direction. The movement of the wedge creates a radial force that acts 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 so that a tilting movement is almost avoided.
  • the wedge is applied to a corresponding rotor surface contact surface. This would be an alternative way to form the turbine blade fuse. Instead of the sloping wedge surface To put on the turbine blade root, it is proposed in this advantageous development to apply the wedge to 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 has to be executed with a groove and that milled part can be inserted into 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 mating thread in the wedge.
  • the traction means is developed with simple means such that it is easy to produce. The wedge moves by turning the traction mechanism. Depending on which pitch the thread has, the transmittable force on the turbine blade root is different.
  • 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 safely and securely place the wedge, with a release by the securing segment should be excluded.
  • the securing segment is designed as a sheet and the securing of the traction means by bending or crimping the sheet done on the traction means.
  • 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 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 Tannenbaumfuß.
  • the blade root 3 is arranged in a blade holder 4.
  • the blade holder 4 has a correspondingly the blade root 3 complementary formed Christmas tree shape.
  • the turbine blade 2 must be secured both in the axial direction 5 and in the radial direction 6.
  • 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 pulling means 8 comprises a thread 10.
  • the wedge 7 accordingly has a bore 11 with a corresponding mating thread 12.
  • a rotation of the traction means 8 causes a 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 or crimping of the sheet around the traction means 8.
  • the sheet can be attached to the screw head 13 are of course bent to thereby avoid turning the traction means 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 designed as a plate spring and arranged in a securing groove 17.
  • FIG 4 is a perspective view of the blade holder to see, with the turbine blade 2 is not shown.
  • 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 rotor surface abutment surface 21 has substantially the same function as the turbine blade root abutment surface 9, namely to transmit a force of the wedge 7 in the radial direction 6.
  • 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. 8 is a perspective view of the blade holder 4 can be seen, wherein the traction means 8 and the wedge 7 and the securing means 16 are not shown.
  • 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)
EP06017818A 2006-08-25 2006-08-25 Schaufelbefestigung einer Turbine Withdrawn EP1892380A1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP06017818A EP1892380A1 (de) 2006-08-25 2006-08-25 Schaufelbefestigung einer Turbine
JP2009524997A JP2010501765A (ja) 2006-08-25 2007-08-02 タービン翼固定装置
US12/310,412 US8192167B2 (en) 2006-08-25 2007-08-02 Blade fastening means of a turbine
EP07802464A EP2076656B1 (de) 2006-08-25 2007-08-02 Schaufelbefestigung einer turbine
AT07802464T ATE459786T1 (de) 2006-08-25 2007-08-02 Schaufelbefestigung einer turbine
CN2007800316835A CN101506475B (zh) 2006-08-25 2007-08-02 透平叶片锁紧装置
DE502007003039T DE502007003039D1 (de) 2006-08-25 2007-08-02 Schaufelbefestigung einer turbine
PCT/EP2007/058001 WO2008022890A1 (de) 2006-08-25 2007-08-02 Schaufelbefestigung einer turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06017818A EP1892380A1 (de) 2006-08-25 2006-08-25 Schaufelbefestigung einer Turbine

Publications (1)

Publication Number Publication Date
EP1892380A1 true EP1892380A1 (de) 2008-02-27

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 After (1)

Application Number Title Priority Date Filing Date
EP07802464A Not-in-force EP2076656B1 (de) 2006-08-25 2007-08-02 Schaufelbefestigung einer turbine

Country Status (7)

Country Link
US (1) US8192167B2 (OSRAM)
EP (2) EP1892380A1 (OSRAM)
JP (1) JP2010501765A (OSRAM)
CN (1) CN101506475B (OSRAM)
AT (1) ATE459786T1 (OSRAM)
DE (1) DE502007003039D1 (OSRAM)
WO (1) WO2008022890A1 (OSRAM)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2299060A1 (de) * 2009-09-17 2011-03-23 Siemens Aktiengesellschaft Schaufelbefestigung mit Sicherheitseinrichtung für Turbinenschaufeln
DE102012213227B3 (de) * 2012-07-27 2013-09-26 Siemens Aktiengesellschaft Schaufelkranz für eine Turbomaschine
WO2014202561A1 (de) * 2013-06-21 2014-12-24 Siemens Aktiengesellschaft Schaufelbefestigung für turbinenschaufeln und zugehöriger rotor
WO2016116285A1 (de) * 2015-01-20 2016-07-28 Siemens Aktiengesellschaft Schaufelbefestigung mit sicherungseinrichtung für turbinenschaufeln
IT201600130088A1 (it) * 2016-12-22 2018-06-22 Nuovo Pignone Tecnologie Srl Pala di turbina e set di fissaggio
FR3121954A1 (fr) * 2021-04-20 2022-10-21 Safran Aircraft Engines Dispositif de calage d’un pied d’aube dans une alveole d’un disque de rotor de turbomachine
DE102014100090B4 (de) 2013-01-11 2023-06-07 General Electric Company Turbomaschine und Verfahren zur Handhabung von Turbomaschinenkomponenten
FR3132078A1 (fr) * 2022-01-24 2023-07-28 Safran Aircraft Engines Ensemble de fixation pour une aube pour turbomachine
EP4443008A1 (fr) * 2023-04-05 2024-10-09 Alpinov X Rotor pour la compression de gaz aqueux à aube fixée à un support via au moins un système d'assemblage

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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
EP2711504A1 (de) * 2012-09-19 2014-03-26 Siemens Aktiengesellschaft Vorrichtung zum Überbrücken eines Spiels
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
CN106030041B (zh) * 2014-02-26 2018-09-18 三菱日立电力系统株式会社 动叶片保持装置、动叶片固定构件按压装置、旋转机械的制造方法、组装方法、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
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
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.
US11396822B2 (en) * 2020-08-25 2022-07-26 General Electric Company Blade dovetail and retention apparatus
KR102388988B1 (ko) * 2020-08-25 2022-04-20 두산중공업 주식회사 로터 및 이를 포함하는 터보머신
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
KR102703143B1 (ko) * 2022-01-14 2024-09-04 두산에너빌리티 주식회사 블레이드 고정 조립체, 이를 포함하는 가스 터빈 및 가스 터빈 제조 방법
KR102703146B1 (ko) * 2022-01-14 2024-09-04 두산에너빌리티 주식회사 블레이드 고정 조립체, 이를 포함하는 가스 터빈 및 가스 터빈 제조 방법
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
US12065948B1 (en) * 2023-06-09 2024-08-20 Rtx Corporation Blade spacer

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EP1643082A1 (de) * 2004-09-30 2006-04-05 Siemens Aktiengesellschaft Schaufelbefestigung einer Turbine

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2299060A1 (de) * 2009-09-17 2011-03-23 Siemens Aktiengesellschaft Schaufelbefestigung mit Sicherheitseinrichtung für Turbinenschaufeln
WO2011033063A1 (de) * 2009-09-17 2011-03-24 Siemens Aktiengesellschaft Schaufelbefestigung mit sicherheitseinrichtung für turbinenschaufeln
US8956122B2 (en) 2009-09-17 2015-02-17 Siemens Aktiengesellschaft Blade fastening having safety device for turbine blades
DE102012213227B3 (de) * 2012-07-27 2013-09-26 Siemens Aktiengesellschaft Schaufelkranz für eine Turbomaschine
WO2014016431A1 (de) 2012-07-27 2014-01-30 Siemens Aktiengesellschaft Schaufelkranz für eine turbomaschine
CN104508248A (zh) * 2012-07-27 2015-04-08 西门子公司 用于涡轮机的叶片环
CN104508248B (zh) * 2012-07-27 2016-08-17 西门子公司 用于涡轮机的叶片环和用于固定式燃气轮机的压缩机
DE102014100090B4 (de) 2013-01-11 2023-06-07 General Electric Company Turbomaschine und Verfahren zur Handhabung von Turbomaschinenkomponenten
WO2014202561A1 (de) * 2013-06-21 2014-12-24 Siemens Aktiengesellschaft Schaufelbefestigung für turbinenschaufeln und zugehöriger rotor
EP2816196A1 (de) * 2013-06-21 2014-12-24 Siemens Aktiengesellschaft Schaufelbefestigung für Turbinenschaufeln und zugehöriger Rotor
CN107208490A (zh) * 2015-01-20 2017-09-26 西门子公司 具有用于涡轮叶片的锁定装置的叶片固定装置
RU2668512C1 (ru) * 2015-01-20 2018-10-01 Сименс Акциенгезелльшафт Крепление лопаток с предохранительным устройством для лопаток турбины
US10487674B2 (en) 2015-01-20 2019-11-26 Siemens Aktiengesellschaft Blade fastening mechanism having a securing device for turbine blades
WO2016116285A1 (de) * 2015-01-20 2016-07-28 Siemens Aktiengesellschaft Schaufelbefestigung mit sicherungseinrichtung für turbinenschaufeln
IT201600130088A1 (it) * 2016-12-22 2018-06-22 Nuovo Pignone Tecnologie Srl Pala di turbina e set di fissaggio
EP3339579A1 (en) * 2016-12-22 2018-06-27 Nuovo Pignone Tecnologie SrL Turbine blade and locking set
US10669868B2 (en) 2016-12-22 2020-06-02 Nuovo Pignone Tecnologie Srl Turbine blade and locking set
FR3121954A1 (fr) * 2021-04-20 2022-10-21 Safran Aircraft Engines Dispositif de calage d’un pied d’aube dans une alveole d’un disque de rotor de turbomachine
FR3132078A1 (fr) * 2022-01-24 2023-07-28 Safran Aircraft Engines Ensemble de fixation pour une aube pour turbomachine
EP4443008A1 (fr) * 2023-04-05 2024-10-09 Alpinov X Rotor pour la compression de gaz aqueux à aube fixée à un support via au moins un système d'assemblage
FR3147602A1 (fr) * 2023-04-05 2024-10-11 Alpinov X Rotor pour la compression de gaz aqueux à aube fixée à un support via au moins un système d’assemblage

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CN101506475B (zh) 2013-01-23
US8192167B2 (en) 2012-06-05
EP2076656B1 (de) 2010-03-03
ATE459786T1 (de) 2010-03-15
DE502007003039D1 (de) 2010-04-15
US20090324414A1 (en) 2009-12-31
JP2010501765A (ja) 2010-01-21
CN101506475A (zh) 2009-08-12
WO2008022890A1 (de) 2008-02-28
EP2076656A1 (de) 2009-07-08

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