GB1278825A - Pump, fan or turbine with variable blade rake - Google Patents
Pump, fan or turbine with variable blade rakeInfo
- Publication number
- GB1278825A GB1278825A GB1850369A GB1850369A GB1278825A GB 1278825 A GB1278825 A GB 1278825A GB 1850369 A GB1850369 A GB 1850369A GB 1850369 A GB1850369 A GB 1850369A GB 1278825 A GB1278825 A GB 1278825A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- rotor
- blade support
- axis
- gear
- 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
- F01D7/00—Rotors with blades adjustable in operation; Control thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0055—Rotors with adjustable blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05D2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05D2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
1278825 Mixed-flow pumps and fans; turbines NATIONAL RESEARCH DEVELOPMENT CORP 8 April 1970 [10 April 1969] 18503 /69 Heading F1C and FIT In a pump, fan or turbine in which blades mounted on a rotor boss within a part-spherical housing may be varied in rake angle so as to vary the flow between predominently axial and predominantly radial, blade supports mounted in the boss are each rotatable about a blade support axis intersecting the rotor axis and at an angle to the rotor axis which lies between two extreme limits of adjustment of the rake angle, each blade support defining a blade pivot axis intersecting the rotor axis and at an angle to the blade support axis, means operable externally of the machine for rotating the blade support relative to the boss about the blade support axis, planetary gear means comprising a gear fast with the blade and concentric with the blade pivot axis and a gear centered upon the blade support axis and means for making the latter gear fast with the boss, whereby, on rotation of the blade support about the blade support axis, the pitch angle of the blade bears a predetermined relationship to its rake angle. Each rotor blade 6, Fig.2, of a pump is pivotally mounted on a blade support 14 which in turn is pivotally mounted on a rotor hub 25, the blade axis 36 and the blade support axis 17 intersecting the rotor axis at a common point 37. Adjustment of each blade 6 between the full-line position in which the flow is predominantly axial and the dotted position 19, see also Fig. 3, in which the flow is predominantly radial can be effected while the pump is running by a hand wheel 58 which causes longitudinal displacement of a non-rotating pushrod 55 passing through the hollow shaft 5 of the rotor. The push-rod 55 engages a cam block 50 through flanges 66, 67 to displace the cam block along guide bars 51, 52 carried by the rotor hub. The cam block 50 is engaged by cam followers 48, one for each rotor blade, which effect rotation of the blade supports 14 about their axes 17 through gearing 44, 42. A hollow bush 29 forming a bearing for the spindle 32 of each blade support 14 is formed with a pinion 40 which meshes with an idler pinion 34 carried by the blade support, the idler pinion in turn meshing with a pinion 38 fast with the blade spindle 35, the pinions forming a planetary gearing which, as the blade support is turned to adjust the blade rake angle, causes the blade to turn in the opposite direction relative to the blade support so that the blade pitch angle remains unaltered. The tooth ratio of the pinions 38, 40 may differ from unity to cause the pitch angle to increase or decrease instead of remaining unaltered. In another arrangement, Fig.7, the gear 44 is carried by a central shaft 81. Gearwheels 82, 83 on the rotor shaft 5 and shaft 81 are connected via respective pinions 84, 85 to a ring gear 86. A normally stationary ring 89 carrying the pinion 85 can be rotated to effect the blade adjustment. In a further embodiment, Fig.6 (not shown) the gear (44) is driven, for adjustment of the blades, by an electric, hydraulic or pneumatic motor carried by the rotor hub.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1850369A GB1278825A (en) | 1969-04-10 | 1969-04-10 | Pump, fan or turbine with variable blade rake |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1850369A GB1278825A (en) | 1969-04-10 | 1969-04-10 | Pump, fan or turbine with variable blade rake |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1278825A true GB1278825A (en) | 1972-06-21 |
Family
ID=10113552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1850369A Expired GB1278825A (en) | 1969-04-10 | 1969-04-10 | Pump, fan or turbine with variable blade rake |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1278825A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4433955A (en) | 1981-03-26 | 1984-02-28 | General Electric Company | Turbine arrangement |
US4521158A (en) * | 1982-09-06 | 1985-06-04 | Balcke-Duerr Ag | Fluid-flow machine |
FR2574114A1 (en) * | 1984-09-07 | 1986-06-06 | Rolls Royce | IMPROVEMENTS RELATING TO FIND PROFILE COMPONENTS FOR TURBINE ENGINES |
US4599041A (en) * | 1984-12-19 | 1986-07-08 | Stricker John G | Variable camber tandem blade bow for turbomachines |
USRE32238E (en) * | 1981-03-26 | 1986-09-02 | General Electric Company | Turbine arrangement |
EP0541046A1 (en) * | 1991-11-04 | 1993-05-12 | HALBERG MASCHINENBAU GmbH | Propeller pump with blade pitch adjustment |
CN108757552A (en) * | 2018-08-05 | 2018-11-06 | 孙大飞 | Full angle blade control device and its adjusting method |
CN116044790A (en) * | 2023-01-29 | 2023-05-02 | 山东凯格瑞森能源科技有限公司 | High-pressure heat radiation fan |
-
1969
- 1969-04-10 GB GB1850369A patent/GB1278825A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4433955A (en) | 1981-03-26 | 1984-02-28 | General Electric Company | Turbine arrangement |
USRE32238E (en) * | 1981-03-26 | 1986-09-02 | General Electric Company | Turbine arrangement |
US4521158A (en) * | 1982-09-06 | 1985-06-04 | Balcke-Duerr Ag | Fluid-flow machine |
FR2574114A1 (en) * | 1984-09-07 | 1986-06-06 | Rolls Royce | IMPROVEMENTS RELATING TO FIND PROFILE COMPONENTS FOR TURBINE ENGINES |
US4599041A (en) * | 1984-12-19 | 1986-07-08 | Stricker John G | Variable camber tandem blade bow for turbomachines |
EP0541046A1 (en) * | 1991-11-04 | 1993-05-12 | HALBERG MASCHINENBAU GmbH | Propeller pump with blade pitch adjustment |
CN108757552A (en) * | 2018-08-05 | 2018-11-06 | 孙大飞 | Full angle blade control device and its adjusting method |
CN108757552B (en) * | 2018-08-05 | 2024-05-07 | 孙大飞 | Full-angle blade adjusting device and adjusting method thereof |
CN116044790A (en) * | 2023-01-29 | 2023-05-02 | 山东凯格瑞森能源科技有限公司 | High-pressure heat radiation fan |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |