GB1186240A - Improvements in Blades for Fluid Flow Machines. - Google Patents
Improvements in Blades for Fluid Flow Machines.Info
- Publication number
- GB1186240A GB1186240A GB58478/67A GB5847867A GB1186240A GB 1186240 A GB1186240 A GB 1186240A GB 58478/67 A GB58478/67 A GB 58478/67A GB 5847867 A GB5847867 A GB 5847867A GB 1186240 A GB1186240 A GB 1186240A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bridge
- blade
- blades
- shroud
- chromium
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S416/00—Fluid reaction surfaces, i.e. impellers
- Y10S416/50—Vibration damping features
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
1,186,240. Turbine and compressor blades. ROLLS-ROYCE Ltd. Dec. 19, 1968 [Dec.22, 1967], No. 58478/67. Heading F1T. A blade, such as a turbine or compressor rotor blade in a gas turbine engine, has a tip shroud 11 with a bridge piece 16 fitted over the top of the shroud 11 and having end portions 18 of a material having greater wear resistance than the blade. The portions 18 have inclined abutment surfaces 15 which co-operate in the assembled condition with the surfaces 15 on adjacent rotor blades to provide an interference fit which puts a slight twist on the blades to assist vibration damping. Axial location of each bridge piece 16 is provided by ribs 19 on the shroud 11, the bridge 16 then being brazed in position. Each blade may be made from a nickel-chromium alloy whilst the bridge 16, or only the end portions 18 thereof, is/ are made from a wear resistant alloy containing tungsten and chromium carbides, cobalt and chromium. To reduce weight, the intermediate portion of the bridge 16 may be reduced in thickness by machining after brazing.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB58478/67A GB1186240A (en) | 1967-12-22 | 1967-12-22 | Improvements in Blades for Fluid Flow Machines. |
US783632A US3576377A (en) | 1967-12-22 | 1968-12-13 | Blades for fluid flow machines |
DE19681816066 DE1816066B2 (en) | 1967-12-22 | 1968-12-20 | Blade for turbo machines |
FR1598028D FR1598028A (en) | 1967-12-22 | 1968-12-23 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB58478/67A GB1186240A (en) | 1967-12-22 | 1967-12-22 | Improvements in Blades for Fluid Flow Machines. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1186240A true GB1186240A (en) | 1970-04-02 |
Family
ID=10481718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB58478/67A Expired GB1186240A (en) | 1967-12-22 | 1967-12-22 | Improvements in Blades for Fluid Flow Machines. |
Country Status (4)
Country | Link |
---|---|
US (1) | US3576377A (en) |
DE (1) | DE1816066B2 (en) |
FR (1) | FR1598028A (en) |
GB (1) | GB1186240A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2564006A (en) * | 2017-05-24 | 2019-01-02 | Safran Aircraft Engines | Removable anti-wear part for blade root |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1419381A (en) * | 1972-03-09 | 1975-12-31 | Rolls Royce | Fan for gas turbine engines |
US4257741A (en) * | 1978-11-02 | 1981-03-24 | General Electric Company | Turbine engine blade with airfoil projection |
US4576551A (en) * | 1982-06-17 | 1986-03-18 | The Garrett Corporation | Turbo machine blading |
US4460316A (en) | 1982-12-29 | 1984-07-17 | Westinghouse Electric Corp. | Blade group with pinned root |
DE3413628C2 (en) * | 1983-04-25 | 1996-09-19 | Gen Electric | Gap seal for a steam turbine |
FR2552159B1 (en) * | 1983-09-21 | 1987-07-10 | Snecma | DEVICE FOR CONNECTING AND SEALING TURBINE STATOR BLADE SECTIONS |
EP0214393B1 (en) * | 1985-08-31 | 1989-12-13 | BBC Brown Boveri AG | Antivibration device for turbo machine blades |
US4815938A (en) * | 1987-12-24 | 1989-03-28 | Westinghouse Electric Corp. | Shroud gap control for integral shrouded blades |
GB2223276B (en) * | 1988-09-30 | 1992-09-02 | Rolls Royce Plc | Turbine aerofoil blade |
US5083903A (en) * | 1990-07-31 | 1992-01-28 | General Electric Company | Shroud insert for turbomachinery blade |
US5137426A (en) * | 1990-08-06 | 1992-08-11 | General Electric Company | Blade shroud deformable protective coating |
US5324168A (en) * | 1993-05-13 | 1994-06-28 | Eastman Kodak Company | Use of stellite to prevent silver plateout |
US6786698B2 (en) * | 2002-12-19 | 2004-09-07 | General Electric Company | Steam turbine bucket flowpath |
US7001152B2 (en) * | 2003-10-09 | 2006-02-21 | Pratt & Wiley Canada Corp. | Shrouded turbine blades with locally increased contact faces |
EP1591625A1 (en) * | 2004-04-30 | 2005-11-02 | ALSTOM Technology Ltd | Gas turbine blade shroud |
EP1767744A1 (en) * | 2005-09-22 | 2007-03-28 | Siemens Aktiengesellschaft | Shrouded turbine blades comprising a welded hardface cladding and process of manufacture |
US8182228B2 (en) * | 2007-08-16 | 2012-05-22 | General Electric Company | Turbine blade having midspan shroud with recessed wear pad and methods for manufacture |
RU2010150602A (en) * | 2010-12-09 | 2012-06-20 | Альстом Текнолоджи Лтд (Ch) | ROTOR BLADE BANDAGE |
US20120195742A1 (en) * | 2011-01-28 | 2012-08-02 | Jain Sanjeev Kumar | Turbine bucket for use in gas turbine engines and methods for fabricating the same |
US9163519B2 (en) * | 2011-07-28 | 2015-10-20 | General Electric Company | Cap for ceramic blade tip shroud |
US8894368B2 (en) * | 2012-01-04 | 2014-11-25 | General Electric Company | Device and method for aligning tip shrouds |
CN103089322B (en) * | 2013-01-29 | 2015-04-22 | 杭州汽轮机股份有限公司 | Damp lashing strip structure of industrial steam turbine high load short vane |
US9683446B2 (en) | 2013-03-07 | 2017-06-20 | Rolls-Royce Energy Systems, Inc. | Gas turbine engine shrouded blade |
US10294801B2 (en) * | 2017-07-25 | 2019-05-21 | United Technologies Corporation | Rotor blade having anti-wear surface |
FR3086692B1 (en) * | 2018-09-28 | 2022-07-29 | Safran Aircraft Engines | TURBOMACHINE BLADE EQUIPPED WITH AN ANTI-WEAR INSERT |
FR3111158B1 (en) * | 2020-06-04 | 2022-06-03 | Safran Aircraft Engines | Removable anti-wear piece for blade heel |
US11739645B2 (en) | 2020-09-30 | 2023-08-29 | General Electric Company | Vibrational dampening elements |
US11536144B2 (en) | 2020-09-30 | 2022-12-27 | General Electric Company | Rotor blade damping structures |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1159965B (en) * | 1961-08-10 | 1963-12-27 | Bbc Brown Boveri & Cie | Device for vibration damping on a turbine or compressor blade ring |
US3304056A (en) * | 1965-03-19 | 1967-02-14 | Hitachi Ltd | Turbine blades |
-
1967
- 1967-12-22 GB GB58478/67A patent/GB1186240A/en not_active Expired
-
1968
- 1968-12-13 US US783632A patent/US3576377A/en not_active Expired - Lifetime
- 1968-12-20 DE DE19681816066 patent/DE1816066B2/en not_active Withdrawn
- 1968-12-23 FR FR1598028D patent/FR1598028A/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2564006A (en) * | 2017-05-24 | 2019-01-02 | Safran Aircraft Engines | Removable anti-wear part for blade root |
GB2564006B (en) * | 2017-05-24 | 2022-02-16 | Safran Aircraft Engines | Removable anti-wear part for blade tip |
Also Published As
Publication number | Publication date |
---|---|
DE1816066A1 (en) | 1969-08-07 |
FR1598028A (en) | 1970-06-29 |
DE1816066B2 (en) | 1970-11-05 |
US3576377A (en) | 1971-04-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
PLE | Entries relating assignments, transmissions, licences in the register of patents |