GB741550A - Improvements in or relating to the rotors of multi-stage axial flow compressors or turbines - Google Patents
Improvements in or relating to the rotors of multi-stage axial flow compressors or turbinesInfo
- Publication number
- GB741550A GB741550A GB17414/52A GB1741452A GB741550A GB 741550 A GB741550 A GB 741550A GB 17414/52 A GB17414/52 A GB 17414/52A GB 1741452 A GB1741452 A GB 1741452A GB 741550 A GB741550 A GB 741550A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discs
- disc
- tubular
- flange
- bolts
- 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
- 238000005452 bending Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
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
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
-
- 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
- F01D5/3053—Fixing blades to rotors; Blade roots ; Blade spacers by means of pins
Abstract
741,550. Shafts. DE HAVILLAND ENGINE CO., Ltd., HALFORD, F. B., and WILSON, W. K. Sept. 21, 1953 [July 10, 1952], No. 17414/52. Class 80(2) [Also in Group XXVI] A rotor for a multi-stage axial flow compressor or turbine comprises two or more axially displaced discs, a one piece tubular torque transmitting connecting piece extending between each pair of discs and rigidly connected thereto but formed separately from at least one of them and having a diameter such that discs extend radially beyond them, each tubular connecting piece being formed at its end or each end formed separately from the disc with a radially extending flange which is located with respect to the disc by a spigot joint and is connected thereto, by bolts or rivets passing through the flange and disc and blades connected to the outer edge portion of each disc outside the connecting pieces. In the arrangement shown, the rotor comprises five spaced parallel discs A, B, C, D and E each having formed integral with it a tubular connecting piece A', B<SP>1</SP>, C', D<SP>1</SP>. Each of the connecting pieces comprises a frusto-conical portion and a cylindrical section A<SP>2</SP>, B<SP>2</SP>, C<SP>2</SP>, D<SP>2</SP>, terminating in a flange A<SP>3</SP>, B<SP>3</SP>, C', D<SP>3</SP>. Each of the discs B, C, D and E has an annular rib forming with the flange A<SP>3</SP>, B<SP>3</SP>, C<SP>3</SP>, or D<SP>3</SP>, a spigot joint and is attached to the appropriate flange by a ring of bolts F. A tubular strut or spacer A<SP>4</SP> formed integral with the disc A is connected to the disc B by a spigot joint A<SP>5</SP> and bolts A<SP>6</SP>. A frusto-conical strut G, also provided to prevent distortion or vibration of the discs, is connected to the discs A and B by spigot joints A<SP>5</SP>, A<SP>7</SP> and bolts A<SP>6</SP>. Similar struts G<SP>1</SP>, G<SP>2</SP> may be provided between the discs C, D and E. A frusto-conical connecting piece H having a series of stepped cylindrical surfaces H<SP>1</SP> is connected to the outer face of the disc E. The disc A is also provided with a tubular extension A' by which it is supported by a bearing A<SP>10</SP>. Each of the discs A, B, C, D, and E has a rim portion A', B<SP>4</SP>, C<SP>4</SP>, D<SP>4</SP>, E<SP>1</SP> which extends beyond the outer surface of the connecting pieces to which rings of rotor blades J, K, L. M, N are connected. Each blade has a forked root which is connected to the rim of the discs by a single pin so that the blade is free to rock to a limited extent so as to reduce the bending stresses in the blade due to centrifugal and gas forces. The various spigot joints between the parts A<SP>1</SP>, B, B<SP>1</SP>, C C', D, D', E, H, G, G<SP>1</SP> and G<SP>2</SP> are so arranged that in operation the loads imposed on the parts by centrifugal forces will tend to cause greater expansion of the male part of each spigot joint than of the female part. Small bleed holes may be provided between the discs to prevent build up of pressure in the spaces between them. The tubular connecting pieces may be formed separately from the discs and are rigidly connected to the discs by spigot joints. The strut members G, G<SP>1</SP>, G<SP>3</SP> may be connected at one or more ends to the discs or may merely make a close fit with appropriate locating surfaces on these discs. The surfaces A<SP>2</SP>, B<SP>2</SP>, C', D<SP>2</SP> and H<SP>1</SP> co-operate with sealing members 0 to 04 carried by the stator. Specification 741,549, [Group XXVI], is referred to.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB17414/52A GB741550A (en) | 1952-07-10 | 1952-07-10 | Improvements in or relating to the rotors of multi-stage axial flow compressors or turbines |
US397742A US2795393A (en) | 1952-07-10 | 1953-12-11 | Rotors of multi-stage axial flow compressors or turbines |
CH315699D CH315699A (en) | 1952-07-10 | 1953-12-22 | Multistage axial flow turbo-machine rotor |
FR1095078D FR1095078A (en) | 1952-07-10 | 1954-01-15 | Improvements to rotors of compressors or turbines of the axial multistage type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB17414/52A GB741550A (en) | 1952-07-10 | 1952-07-10 | Improvements in or relating to the rotors of multi-stage axial flow compressors or turbines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB741550A true GB741550A (en) | 1955-12-07 |
Family
ID=10094771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17414/52A Expired GB741550A (en) | 1952-07-10 | 1952-07-10 | Improvements in or relating to the rotors of multi-stage axial flow compressors or turbines |
Country Status (4)
Country | Link |
---|---|
US (1) | US2795393A (en) |
CH (1) | CH315699A (en) |
FR (1) | FR1095078A (en) |
GB (1) | GB741550A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB800098A (en) * | 1955-10-31 | 1958-08-20 | Rolls Royce | Improvements in or relating to multi-stage axial-flow compressors |
US3035759A (en) * | 1957-11-13 | 1962-05-22 | Gen Electric | Rotor and stator construction |
US3034254A (en) * | 1958-03-25 | 1962-05-15 | Interlego Ag | Toy building sets and building blocks |
GB979749A (en) * | 1963-10-18 | 1965-01-06 | Rolls Royce | Axial flow compressors particularly for gas turbine engines |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1362074A (en) * | 1919-05-03 | 1920-12-14 | British Westinghouse Electric | Turbine |
US1452602A (en) * | 1921-05-10 | 1923-04-24 | Westinghouse Electric & Mfg Co | Turbine-blade fastening |
US2452782A (en) * | 1945-01-16 | 1948-11-02 | Power Jets Res & Dev Ltd | Construction of rotors for compressors and like machines |
GB621315A (en) * | 1947-02-17 | 1949-04-07 | Frederick William Walton Morle | Improvements relating to compressors and turbines |
US2530477A (en) * | 1948-09-22 | 1950-11-21 | Ostmar Frans Eric Ossian | Means for balancing the axial thrust of elastic fluid compressors and turbines of the axial flow type |
GB667979A (en) * | 1949-07-28 | 1952-03-12 | Rolls Royce | Improvements in or relating to axial flow compressors and turbines |
US2675174A (en) * | 1950-05-11 | 1954-04-13 | Gen Motors Corp | Turbine or compressor rotor |
BE507205A (en) * | 1950-12-08 |
-
1952
- 1952-07-10 GB GB17414/52A patent/GB741550A/en not_active Expired
-
1953
- 1953-12-11 US US397742A patent/US2795393A/en not_active Expired - Lifetime
- 1953-12-22 CH CH315699D patent/CH315699A/en unknown
-
1954
- 1954-01-15 FR FR1095078D patent/FR1095078A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2795393A (en) | 1957-06-11 |
FR1095078A (en) | 1955-05-26 |
CH315699A (en) | 1956-08-31 |
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