GB979392A - Shrouded-blading for turbines or compressors - Google Patents
Shrouded-blading for turbines or compressorsInfo
- 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
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.
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)
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 (31)
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 | ||
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 |
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 | Blade fastening for rotating machinery has blades fitted in slots without play or with pretensioning so that torsional moments acting on inner platform or blade roots oppose torsional moments acting upon outer platform or support wing |
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 |
EP3521564B1 (en) * | 2016-12-22 | 2020-07-29 | Mitsubishi Heavy Industries Compressor Corporation | Turbine rotor blade assembly |
US10480333B2 (en) * | 2017-05-30 | 2019-11-19 | United Technologies Corporation | Turbine blade including balanced mateface condition |
Family Cites Families (8)
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 |
-
1961
- 1961-08-10 DE DEB63595A patent/DE1159965B/en active Pending
-
1962
- 1962-08-08 FR FR906431A patent/FR1330657A/en not_active Expired
- 1962-08-08 US US215617A patent/US3185441A/en not_active Expired - Lifetime
- 1962-08-08 CH CH947262A patent/CH397722A/en unknown
- 1962-08-08 GB GB30340/62A patent/GB979392A/en not_active Expired
Cited By (3)
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 |
---|---|
FR1330657A (en) | 1963-06-21 |
US3185441A (en) | 1965-05-25 |
CH397722A (en) | 1965-08-31 |
DE1159965B (en) | 1963-12-27 |
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