EP1703080A1 - Machine tournante - Google Patents

Machine tournante Download PDF

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Publication number
EP1703080A1
EP1703080A1 EP06110074A EP06110074A EP1703080A1 EP 1703080 A1 EP1703080 A1 EP 1703080A1 EP 06110074 A EP06110074 A EP 06110074A EP 06110074 A EP06110074 A EP 06110074A EP 1703080 A1 EP1703080 A1 EP 1703080A1
Authority
EP
European Patent Office
Prior art keywords
groove
annular groove
rotor shaft
rotating machine
circumferential annular
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.)
Ceased
Application number
EP06110074A
Other languages
German (de)
English (en)
Inventor
Andrea De Simone
Jonas Fältström
Holger Kiewel
Thomas Kramer
Markus Roland Wiebe
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.)
Ansaldo Energia IP UK Ltd
Original Assignee
Alstom Technology AG
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 Alstom Technology AG filed Critical Alstom Technology AG
Publication of EP1703080A1 publication Critical patent/EP1703080A1/fr
Ceased legal-status Critical Current

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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
    • 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
    • F01D11/001—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade 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
    • 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
    • F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
    • 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
    • F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
    • F01D5/3038—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot the slot having inwardly directed abutment faces on both sides
    • 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
    • F05D2240/00—Components
    • F05D2240/60—Shafts
    • 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
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/14—Two-dimensional elliptical

Definitions

  • the present invention relates to the field of rotary machines. It relates to a rotating machine according to the preamble of claim 1.
  • the at least one groove has a groove bottom with an elliptical cross-sectional contour.
  • the groove can thereby run in the axial direction, as is the case with the fir tree grooves of compressor or turbine blades.
  • the groove can also be designed as a circumferential annular groove or circumferential groove and also serve the attachment of compressor or turbine blades.
  • the at least one groove is a concentrically encircling annular groove, the major axis of the ellipse extending in the axial direction and the small main axis in the radial direction.
  • a development of this embodiment is characterized in that the rotor shaft is concentrically surrounded at a distance from a stator, that the at least one circumferential annular groove is part of a arranged between the stator and rotor shaft shaft seal, and that each circumferential annular groove is associated with at least one sealing element, which on Stator is attached and sealingly engages in the associated circumferential annular groove in the sense of a labyrinth seal.
  • the sealing elements are preferably designed as strip seals or brush seals.
  • a development of this embodiment is characterized in that the rotating machine is a compressor or a turbine that the rotor shaft is provided for receiving blades, and that the at least one circumferential annular groove for receiving and holding the feet of the blades is formed. Undercuts for retaining the blade root are preferably arranged in the at least one circumferential annular groove above the groove bottom.
  • a longitudinal section through a rotating machine with a shaft seal according to an embodiment of the invention is shown in a section.
  • the rotating machine 10 for example a compressor or a turbine, comprises a rotor shaft 11 rotatable about an axis 20, which is concentrically enclosed by a stator 12 at a distance. Between the rotor shaft 11 and the stator 12 remains due to the distance, a gap which is sealed in the axial direction by means of a shaft seal 16 against the passage of a fluid.
  • the shaft seal 16 is constructed in the manner of a labyrinth seal in this example.
  • the rotor shaft 11 comprises on the outer circumference of the rotor shaft 11 a plurality of in the axial direction one behind the other, circumferential annular grooves 14, in the radially projecting from the inner wall of the stator 12 sealing elements 15 immerse sealing.
  • the sealing elements 15 may be, for example, weather strips or brush seals.
  • the annular grooves 15 basically weaken the mechanical strength of the rotor shaft 11.
  • the groove bottom 17 of the annular grooves 15 an elliptical cross-sectional contour, ie, the cross-sectional contour is part of an ellipse 24, which is shown in dashed lines in Fig. 1.
  • the major axis of the ellipse 24 is oriented in the axial direction, the small major axis in the radial direction. This has the consequence that the curvature of the bottom contour of the groove bottom 17 in the middle of the groove bottom 17 (below the sealing member 15) has a minimum and increases toward the edges of the annular groove in accordance with the elliptical equation. In the production of the annular grooves 14, this contour profile is machined out of the rotor shaft 11 in accordance with the ellipse equation.
  • FIG. 2 Another embodiment of the invention is shown in Fig. 2 and relates directly to a turbine or a compressor.
  • the rotating machine 18 includes a rotor shaft 19, which is formed in this case for mounting of rotor blades.
  • a plurality of deep, circumferential annular grooves 21 are arranged on the circumference of the rotor shaft 19 in the axial direction one behind the other, which are provided for receiving the feet of the blades, as shown for example in the aforementioned document US-A-4,818,182.
  • Each of the annular grooves 21 is provided at a predetermined depth with double-sided undercuts 22 on which the blade roots can be supported against the centrifugal forces and retained.
  • the side walls of the annular grooves 21 extend a short distance vertically and then pass into a groove bottom 23 whose cross-sectional contour is also part of an ellipse 24 lying in the axial direction with the large main axis.
  • an elliptical bottom contour is not limited only to a circumferential groove for blades, as shown in Fig. 2. It can also be used with Tannenbaum type axial blade grooves to reduce the stresses in the groove bottom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sealing Devices (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP06110074A 2005-03-03 2006-02-17 Machine tournante Ceased EP1703080A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH3702005 2005-03-03

Publications (1)

Publication Number Publication Date
EP1703080A1 true EP1703080A1 (fr) 2006-09-20

Family

ID=34974761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06110074A Ceased EP1703080A1 (fr) 2005-03-03 2006-02-17 Machine tournante

Country Status (2)

Country Link
US (1) US7628581B2 (fr)
EP (1) EP1703080A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2320030A1 (fr) 2009-11-10 2011-05-11 Alstom Technology Ltd Rotor et aube de rotor pour une turbomachine axiale
CH702204A1 (de) * 2009-11-10 2011-05-13 Alstom Technology Ltd Rotor für eine axial durchströmte turbomaschine sowie gasturbine für solchen rotor.
CH702203A1 (de) * 2009-11-10 2011-05-13 Alstom Technology Ltd Rotor für eine axial durchströmte turbomaschine sowie laufschaufel für einen solchen rotor.
US8198776B2 (en) 2007-08-28 2012-06-12 Brusa Elektronik Ag Current-energized synchronous motor, particularly for vehicle drives
WO2012004761A3 (fr) * 2010-07-09 2012-11-22 Brusa Elektronik Ag Rotor feuilleté pour machine électrique tournante, en particulier pour moteur synchrone hybride de chaînes cinématiques de véhicules
CN103850715A (zh) * 2012-11-30 2014-06-11 西门子公司 转子轮盘
DE102009003344B4 (de) * 2008-01-14 2020-03-26 General Electric Company Verfahren zum Reparieren einer Rotorscheibe für eine Gasturbine und entsprechende Rotorscheibe für eine Gasturbine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011033397A2 (fr) 2009-09-18 2011-03-24 Brusa Elektronik Ag Machine synchrone excitée par aimants permanents avec aimants encastrés
US8794918B2 (en) 2011-01-07 2014-08-05 General Electric Company System for adjusting brush seal segments in turbomachine
US9121297B2 (en) 2011-03-28 2015-09-01 General Electric Company Rotating brush seal
US9255486B2 (en) 2011-03-28 2016-02-09 General Electric Company Rotating brush seal
DE202011105609U1 (de) * 2011-09-12 2011-10-13 Alstom Technology Ltd. Labyrinthdichtung
CN107171461A (zh) * 2017-05-19 2017-09-15 珠海凯邦电机制造有限公司 定子冲片、定子铁芯及电机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818182A (en) * 1987-06-10 1989-04-04 Societe Nationale D'etude Et De Construction De Moteurs D-Aviation (Snecma) System for locking turbine blades on a turbine wheel
GB2265671A (en) * 1992-03-24 1993-10-06 Rolls Royce Plc Bladed rotor for a gas turbine engine
EP1331362A2 (fr) * 2002-01-28 2003-07-30 Kabushiki Kaisha Toshiba Turbine à vapeur géothermique

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429215A (en) * 1943-01-16 1947-10-21 Jarvis C Marble Turbine blade
DE2108176A1 (de) * 1971-02-20 1972-08-31 Motoren Turbinen Union Befestigung von keramischen Turbinenschaufeln
DE2242448A1 (de) * 1972-08-29 1974-03-07 Motoren Turbinen Union Laufrad fuer stroemungsmaschine
US3881844A (en) * 1974-05-28 1975-05-06 Gen Electric Blade platform vibration dampers
FR2282038A1 (fr) * 1974-08-13 1976-03-12 Mtu Muenchen Gmbh Dispositif pour fixer les aubes mobiles de turbomachines
CA1114301A (fr) * 1979-06-27 1981-12-15 Ivor J. Roberts Dispositif de verrouillage pour le montage d'aubes de rotor
US4813850A (en) * 1988-04-06 1989-03-21 Westinghouse Electric Corp. Integral side entry control stage blade group
GB2238581B (en) * 1989-11-30 1994-01-12 Rolls Royce Plc Improved attachment of a gas turbine engine blade to a turbine rotor disc
US5141401A (en) * 1990-09-27 1992-08-25 General Electric Company Stress-relieved rotor blade attachment slot
JP3316418B2 (ja) 1997-06-12 2002-08-19 三菱重工業株式会社 ガスタービン冷却動翼
AT3140U1 (de) 1998-11-06 1999-10-25 Avl List Gmbh Kurbelgehäuse für eine brennkraftmaschine
DE19941134C1 (de) 1999-08-30 2000-12-28 Mtu Muenchen Gmbh Schaufelkranz für eine Gasturbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818182A (en) * 1987-06-10 1989-04-04 Societe Nationale D'etude Et De Construction De Moteurs D-Aviation (Snecma) System for locking turbine blades on a turbine wheel
GB2265671A (en) * 1992-03-24 1993-10-06 Rolls Royce Plc Bladed rotor for a gas turbine engine
EP1331362A2 (fr) * 2002-01-28 2003-07-30 Kabushiki Kaisha Toshiba Turbine à vapeur géothermique

Non-Patent Citations (12)

* Cited by examiner, † Cited by third party
Title
A KATO ET AL: "STRESS CONCENTRATION FACTORS OF GROOVED SHAFTS IN TORSION", JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, vol. 20, no. 3, 1 July 1985 (1985-07-01), pages 173 - 177, XP055005387, ISSN: 0309-3247 *
AKIRA KATO: "DESIGN FORMULA FOR GROOVED SHAFTS UNDER TORSION", JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, vol. 21, no. 4, 1 January 1986 (1986-01-01), pages 205 - 211, XP055005391, ISSN: 0309-3247 *
B ATZORI: "Cracks and notches: analogies and differences of the relevant stress distributions and practical consequences in fatigue limit predictions", INTERNATIONAL JOURNAL OF FATIGUE, vol. 23, no. 4, 1 April 2001 (2001-04-01), pages 355 - 362, XP055005396, ISSN: 0142-1123, DOI: 10.1016/S0142-1123(00)00107-9 *
DATABASE COMPENDEX [online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; April 2001 (2001-04-01), ATZORI B ET AL: "Cracks and notches: Analogies and differences of the relevant stress distributions and practical consequences in fatigue limit predictions", Database accession no. E2001205596370 *
DATABASE COMPENDEX [online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; January 1977 (1977-01-01), OKUBO H ET AL: "STRESS CONCENTRATION FACTORS OF SHALLOW GROOVES IN TORSION.", Database accession no. EIX77060005592 *
DATABASE COMPENDEX [online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; July 1985 (1985-07-01), KATO A ET AL: "STRESS CONCENTRATION FACTORS OF GROOVED SHAFTS IN TORSION.", Database accession no. EIX86050063103 *
DATABASE COMPENDEX [online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; October 2004 (2004-10-01), SMITH E: "The elastic stress distribution near the root of an elliptically cylindrical notch subjected to mode III loadings", Database accession no. E2004428409861 *
H OKUBO ET AL: "STRESS CONCENTRATION FACTORS OF SHALLOW GROOVES IN TORSION", JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, vol. 12, no. 1, 1 January 1977 (1977-01-01), pages 41 - 44, XP055005389, ISSN: 0309-3247 *
HEINZ NEUBER ED - HEINZ NEUBER: "Die Formzahldiagramme und ihre Anwendung (Passage)", 1 January 1985, KERBSPANNUNGSLEHRE - THEORIE DER SPANNUNGSKONZENTRATION - GENAUE BERECHNUNG DER FESTIGKEIT,, PAGE(S) 306 - 317, ISBN: 978-3-540-13558-6, XP007914650 *
NISHITANI H ET AL: "STRESS CONCENTRATION FACTORS FOR THE TORSION OF SHAFTS WITH A CIRCUMFERENTIAL SEMI-ELLIPTIC GROOVE", NIHON KIKAI GAKKAI RONBUNSHU. B - TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS. B, NIHON KIKAI GAKKAI, TOKYO, JP, vol. 43, no. 374, 1 January 1977 (1977-01-01), pages 3642 - 3650, XP009081179, ISSN: 0387-5016 *
RUSHTON K R: "STRESS CONCENTRATIONS ARISING IN THE TORSION OF GROOVED SHAFTS", INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, PERGAMON PRESS, OXFORD, GB, vol. 9, 1 January 1967 (1967-01-01), pages 697 - 705, XP007914662, ISSN: 0020-7403, DOI: 10.1016/0020-7403(67)90060-4 *
SMITH E: "The elastic stress distribution near the root of an elliptically cylindrical notch subjected to mode III loadings", INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, OXFORD, GB, vol. 42, no. 17-18, 1 October 2004 (2004-10-01), pages 1831 - 1839, XP004581667, ISSN: 0020-7225, DOI: 10.1016/J.IJENGSCI.2004.03.010 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8198776B2 (en) 2007-08-28 2012-06-12 Brusa Elektronik Ag Current-energized synchronous motor, particularly for vehicle drives
DE102009003344B4 (de) * 2008-01-14 2020-03-26 General Electric Company Verfahren zum Reparieren einer Rotorscheibe für eine Gasturbine und entsprechende Rotorscheibe für eine Gasturbine
EP2320030A1 (fr) 2009-11-10 2011-05-11 Alstom Technology Ltd Rotor et aube de rotor pour une turbomachine axiale
CH702204A1 (de) * 2009-11-10 2011-05-13 Alstom Technology Ltd Rotor für eine axial durchströmte turbomaschine sowie gasturbine für solchen rotor.
CH702203A1 (de) * 2009-11-10 2011-05-13 Alstom Technology Ltd Rotor für eine axial durchströmte turbomaschine sowie laufschaufel für einen solchen rotor.
US8770938B2 (en) 2009-11-10 2014-07-08 Alstom Technology Ltd Rotor for an axial-throughflow turbomachine and moving blade for such a rotor
WO2012004761A3 (fr) * 2010-07-09 2012-11-22 Brusa Elektronik Ag Rotor feuilleté pour machine électrique tournante, en particulier pour moteur synchrone hybride de chaînes cinématiques de véhicules
CN103850715A (zh) * 2012-11-30 2014-06-11 西门子公司 转子轮盘

Also Published As

Publication number Publication date
US20060197400A1 (en) 2006-09-07
US7628581B2 (en) 2009-12-08

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