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GB979392A - Shrouded-blading for turbines or compressors - Google Patents

Shrouded-blading for turbines or compressors

Info

Publication number
GB979392A
GB979392A GB30340/62A GB3034062A GB979392A GB 979392 A GB979392 A GB 979392A GB 30340/62 A GB30340/62 A GB 30340/62A GB 3034062 A GB3034062 A GB 3034062A GB 979392 A GB979392 A GB 979392A
Authority
GB
United Kingdom
Prior art keywords
blades
shroud
plates
contact
adjacent
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.)
Expired
Application number
GB30340/62A
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.)
BBC BROWN BOVERI and CIE
BBC Brown Boveri AG Switzerland
Original Assignee
BBC BROWN BOVERI and CIE
Brown Boveri und Cie AG Switzerland
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 BBC BROWN BOVERI and CIE, Brown Boveri und Cie AG Switzerland filed Critical BBC BROWN BOVERI and CIE
Publication of GB979392A publication Critical patent/GB979392A/en
Expired legal-status Critical Current

Links

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
    • F01D5/12—Blades
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49321—Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

979,392. Turbine and compressor blades. BROWN, BOVERI & CO. Ltd. Aug. 8, 1962 [Aug. 10, 1961], No. 30340/62. Heading FIT. Shrouded blading for turbines or compressors comprises a shroud having separate shroud plates attached to the blades, the blades displaying in the non-working and working conditions a torsional prestressing which presses the shroud plates of adjacent blades against one another in the circumferential direction. The shroud plates 2 are parallelogram shaped having edges of contact 4, 5 and surfaces of contact 6, 7 with adjacent plates. The blades have in the assembled condition a torsional prestressing which tends to twist them in a clockwise direction and increase the angle between the edges 4, 5 and the line 8 running parallel to the rotor axis so as to press adjacent shroud plates 2 together and damp oscillations. To compensate for thermal expansion the tangent of the angle is greater than the coefficient of friction between the surfaces of contact 6, 7. Surfaces 6, 7 may be treated to reduce friction. The invention is applicable to both stator and rotor blades.
GB30340/62A 1961-08-10 1962-08-08 Shrouded-blading for turbines or compressors Expired GB979392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB63595A DE1159965B (en) 1961-08-10 1961-08-10 Device for vibration damping on a turbine or compressor blade ring

Publications (1)

Publication Number Publication Date
GB979392A true GB979392A (en) 1965-01-01

Family

ID=6974058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30340/62A Expired GB979392A (en) 1961-08-10 1962-08-08 Shrouded-blading for turbines or compressors

Country Status (5)

Country Link
US (1) US3185441A (en)
CH (1) CH397722A (en)
DE (1) DE1159965B (en)
FR (1) FR1330657A (en)
GB (1) GB979392A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215407A (en) * 1988-03-05 1989-09-20 Rolls Royce Plc A bladed rotor assembly
CN109057870A (en) * 2018-08-07 2018-12-21 中国航发湖南动力机械研究所 Turbo blade group

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299004B (en) * 1965-01-19 1969-07-10 Bbc Brown Boveri & Cie Device for vibration damping on a turbine or compressor blade ring
BE634692A (en) * 1962-07-11 1963-11-18
FR1403799A (en) * 1964-05-13 1965-06-25 Rateau Soc Turbine wheel subjected to partial injection
GB1186240A (en) * 1967-12-22 1970-04-02 Rolls Royce Improvements in Blades for Fluid Flow Machines.
US3575523A (en) * 1968-12-05 1971-04-20 Us Navy Labyrinth seal for axial flow fluid machines
US3795462A (en) * 1971-08-09 1974-03-05 Westinghouse Electric Corp Vibration dampening for long twisted turbine blades
DE2318059C3 (en) * 1973-04-06 1979-03-01 Kraftwerk Union Ag, 4330 Muelheim Multiple rotor blades for steam turbines with axial flow
FR2337251A1 (en) * 1975-12-29 1977-07-29 Europ Turb Vapeur TURBOMACHINE MOBILE STAGE
DE2617927A1 (en) * 1976-04-23 1977-11-03 Bbc Brown Boveri & Cie FLOW MACHINE SHOVEL
US4332523A (en) * 1979-05-25 1982-06-01 Teledyne Industries, Inc. Turbine shroud assembly
DE3211073A1 (en) * 1982-03-25 1983-10-06 Kraftwerk Union Ag DEVICE FOR VIBRATION DAMPING ON A LEAD Vane
US4533298A (en) * 1982-12-02 1985-08-06 Westinghouse Electric Corp. Turbine blade with integral shroud
DE3667521D1 (en) * 1985-08-31 1990-01-18 Bbc Brown Boveri & Cie DEVICE FOR DAMPING VIBRATION VIBRATIONS IN TURBO MACHINES.
DE3802741C2 (en) * 1988-01-30 1997-02-13 Asea Brown Boveri Method of bracing blades
US4986737A (en) * 1988-12-29 1991-01-22 General Electric Company Damped gas turbine engine airfoil row
US5120197A (en) * 1990-07-16 1992-06-09 General Electric Company Tip-shrouded blades and method of manufacture
US5083903A (en) * 1990-07-31 1992-01-28 General Electric Company Shroud insert for turbomachinery blade
US5238368A (en) * 1991-01-16 1993-08-24 Ortolano Ralph J Converting grouped blading to equivalent integral covered blading
US5509784A (en) * 1994-07-27 1996-04-23 General Electric Co. Turbine bucket and wheel assembly with integral bucket shroud
DE19505389A1 (en) * 1995-02-17 1996-08-22 Abb Research Ltd Vibration damping for turbine blades
DE10014189A1 (en) 2000-03-23 2001-09-27 Alstom Power Nv Attachment of the blades of a turbomachine
DE10047307A1 (en) * 2000-09-25 2002-08-01 Alstom Switzerland Ltd sealing arrangement
US6454534B1 (en) 2000-12-21 2002-09-24 General Electric Company Flush bucket cover
FR2825411B1 (en) * 2001-05-31 2003-09-19 Snecma Moteurs TURBINE DAWN WITH SEALING LECHETTE
CH698087B1 (en) 2004-09-08 2009-05-15 Alstom Technology Ltd Blade with shroud element.
DE102005030516A1 (en) * 2005-06-28 2007-01-04 Man Turbo Ag Rotor for a turbine and method and apparatus for producing the rotor
DE102009029587A1 (en) 2009-09-18 2011-03-24 Man Diesel & Turbo Se Rotor of a turbomachine
DE102010031213A1 (en) 2010-07-12 2012-01-12 Man Diesel & Turbo Se Rotor of a turbomachine
US8888459B2 (en) * 2011-08-23 2014-11-18 General Electric Company Coupled blade platforms and methods of sealing
EP2803821A1 (en) 2013-05-13 2014-11-19 Siemens Aktiengesellschaft Blade device, blade system, and corresponding method of manufacturing a blade system
US9752450B2 (en) 2015-06-04 2017-09-05 United Technologies Corporation Turbine engine tip clearance control system with later translatable slide block
JP6727333B2 (en) * 2016-12-22 2020-07-22 三菱重工コンプレッサ株式会社 Turbine blade assembly design method
US10480333B2 (en) * 2017-05-30 2019-11-19 United Technologies Corporation Turbine blade including balanced mateface condition

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1304793A (en) * 1919-05-27 Turbine-bucket
US2265592A (en) * 1939-01-16 1941-12-09 Allis Chalmers Mfg Co Turbine blade
US2310412A (en) * 1941-03-08 1943-02-09 Westinghouse Electric & Mfg Co Vibration dampener
US2398140A (en) * 1943-12-08 1946-04-09 Armstrong Siddeley Motors Ltd Bladed rotor
US2438867A (en) * 1945-06-01 1948-03-30 United Aircraft Corp Method of assembling shrouds on impellers
US2423165A (en) * 1945-07-12 1947-07-01 Allis Chalmers Mfg Co Welded blade structure
US2510734A (en) * 1946-04-06 1950-06-06 United Aircraft Corp Turbine or compressor rotor
FR1033197A (en) * 1951-02-27 1953-07-08 Rateau Soc Vibration dampers for mobile turbo-machine blades

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215407A (en) * 1988-03-05 1989-09-20 Rolls Royce Plc A bladed rotor assembly
CN109057870A (en) * 2018-08-07 2018-12-21 中国航发湖南动力机械研究所 Turbo blade group
CN109057870B (en) * 2018-08-07 2020-12-01 中国航发湖南动力机械研究所 Turbine blade assembly

Also Published As

Publication number Publication date
DE1159965B (en) 1963-12-27
FR1330657A (en) 1963-06-21
CH397722A (en) 1965-08-31
US3185441A (en) 1965-05-25

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