GB880069A - Improvements in or relating to turbine or like blades and rotors incorporating such blades - Google Patents
Improvements in or relating to turbine or like blades and rotors incorporating such bladesInfo
- Publication number
- GB880069A GB880069A GB2772958A GB2772958A GB880069A GB 880069 A GB880069 A GB 880069A GB 2772958 A GB2772958 A GB 2772958A GB 2772958 A GB2772958 A GB 2772958A GB 880069 A GB880069 A GB 880069A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- pass
- passages
- root
- fluid
- 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
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
880,069. Turbine and compressor blades. ROLLS-ROYCE Ltd. May 27, 1959 [Aug. 28, 1958], No. 27729/58. Class 110 (3). A turbine or compressor blade is formed with internal fluid-flow passages to carry cooling or heating fluid and there is at least one passage having two passes extending lengthwise through the blade and into the root, one pass leading from an inlet in a surface of the root other than a circumferentially facing surface and the second pass leading to an outlet in a circumferentially-facing surface of the root, the passes being joined in series from the inlet to the outlet, there being provided also at least one single pass passage leading from an inlet in a circumferentially-facing surface of the root to an outlet in the blade tip. In the bladed turbine rotor shown, the blade comprises an aerofoil portion 13, a root and a tip shroud 14, the root itself comprising an attachment portion 15, a platform 16 and a circumferentiallynarrow stem portion 17 therebetween. The blade is mounted by entering its attachment portion 15 in a correspondingly-shaped recess formed in the rim 11 of the rotor disc 10, a shallow recess 20 in the rotor disc co-operating with a recess 21 at the bottom of the attachment portion 15 to form a chamber to which fluid such as high-pressure air is supplied from space 18 through bores 19. Three bores 22, 23, 24 communicate with the chamber 20, 21 and extend through the attachment portion 15 and stem 17. The bore 22 leads to a pair of two-pass passages formed side-by-side in the blade, each passage comprising a pass 25 through which fluid flows radially-outwardly and a pass 26 through which fluid flows radiallyinwardly. The passes 25, 26 of each passage are connected by a transfer passage 27 formed in the tip shroud 14 and closed by a plate 28 welded to the tip shroud. The passes 26 communicate with a fluid outlet orifice 30 formed in one of the circumferentially-facing surfaces of the stem 17. Two single-pass passages 33 disposed side-by-side also extend through the blade from an inlet orifice 34 in the other circumferentially-facing surface of the blade stem 17 to outlets in the tip shroud. The bores 23, 24 communicate with further single-pass passages 31, 32 respectively extending through the leading and trailing edge portions of the blade, the passages having outlets through the tip shroud 14. The spaces between adjacent blade stems 17 are closed at their ends by sealing plates 36 whereby fluid discharging through an outlet 30 in one blade after flowing through the passages 25, 26 then enters the inlet 34 of the adjacent blade to flow through the passages 33.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2772958A GB880069A (en) | 1958-08-28 | 1958-08-28 | Improvements in or relating to turbine or like blades and rotors incorporating such blades |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2772958A GB880069A (en) | 1958-08-28 | 1958-08-28 | Improvements in or relating to turbine or like blades and rotors incorporating such blades |
Publications (1)
Publication Number | Publication Date |
---|---|
GB880069A true GB880069A (en) | 1961-10-18 |
Family
ID=10264310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2772958A Expired GB880069A (en) | 1958-08-28 | 1958-08-28 | Improvements in or relating to turbine or like blades and rotors incorporating such blades |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB880069A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2224082A (en) * | 1988-10-19 | 1990-04-25 | Rolls Royce Plc | Turbine disc having cooling and sealing arrangements |
US5350277A (en) * | 1992-11-20 | 1994-09-27 | General Electric Company | Closed-circuit steam-cooled bucket with integrally cooled shroud for gas turbines and methods of steam-cooling the buckets and shrouds |
US5536143A (en) * | 1995-03-31 | 1996-07-16 | General Electric Co. | Closed circuit steam cooled bucket |
US5994045A (en) * | 1997-12-24 | 1999-11-30 | Eastman Kodak Company | Composite photographic material with laminated biaxially oriented polyolefin sheets with controlled water vapor transmission rate |
-
1958
- 1958-08-28 GB GB2772958A patent/GB880069A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2224082A (en) * | 1988-10-19 | 1990-04-25 | Rolls Royce Plc | Turbine disc having cooling and sealing arrangements |
US5350277A (en) * | 1992-11-20 | 1994-09-27 | General Electric Company | Closed-circuit steam-cooled bucket with integrally cooled shroud for gas turbines and methods of steam-cooling the buckets and shrouds |
US5536143A (en) * | 1995-03-31 | 1996-07-16 | General Electric Co. | Closed circuit steam cooled bucket |
US5994045A (en) * | 1997-12-24 | 1999-11-30 | Eastman Kodak Company | Composite photographic material with laminated biaxially oriented polyolefin sheets with controlled water vapor transmission rate |
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