GB2022534A - Bladed rotors - Google Patents

Bladed rotors

Info

Publication number
GB2022534A
GB2022534A GB7923108A GB7923108A GB2022534A GB 2022534 A GB2022534 A GB 2022534A GB 7923108 A GB7923108 A GB 7923108A GB 7923108 A GB7923108 A GB 7923108A GB 2022534 A GB2022534 A GB 2022534A
Authority
GB
United Kingdom
Prior art keywords
motors
pair
motor
main components
relative movement
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.)
Granted
Application number
GB7923108A
Other versions
GB2022534B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dowty Rotol Ltd
Original Assignee
Dowty Rotol Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dowty Rotol Ltd filed Critical Dowty Rotol Ltd
Priority to GB7923108A priority Critical patent/GB2022534B/en
Publication of GB2022534A publication Critical patent/GB2022534A/en
Application granted granted Critical
Publication of GB2022534B publication Critical patent/GB2022534B/en
Expired legal-status Critical Current

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/30—Blade pitch-changing mechanisms
    • B64C11/38—Blade pitch-changing mechanisms fluid, e.g. hydraulic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0224—Adjusting blade pitch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
    • F04D29/322—Blade mountings
    • F04D29/323—Blade mountings adjustable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/74—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
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/77—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism driven or triggered by centrifugal forces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/50—Control logic embodiment by
    • F05B2270/506—Control logic embodiment by hydraulic means, e.g. hydraulic valves within a hydraulic circuit
    • 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
    • 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
    • F05D2260/77—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism driven or triggered by centrifugal forces
    • 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
    • F05D2270/00—Control
    • F05D2270/50—Control logic embodiments
    • F05D2270/56—Control logic embodiments by hydraulic means, e.g. hydraulic valves within a hydraulic circuit
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Centrifugal Separators (AREA)

Abstract

The rotor, having adjustable blading, includes at least one pair of motors 51, 53 each comprising at least two relatively-movable main components, i.e. pistons 50, 52 and cylinders 54, 55. One motor 51 of the or each pair is oppositely-disposed, about the rotational axis 24 of the rotor, with respect to the other motor 53 thereof and both motors are associated each with a respective control circuit. Transmission means including cam plates 62, 63 is provided by way of which said motors, by relative movement of the main components thereof, effect adjustment of the blading. The relative movement of the two main components 54, 50 of one motor 51 of the or each pair is such in relation to the relative movement of said two main components 55, 52 of the other motor 53 of the or each pair that for a given direction of blade adjustment, the effect of the centrifugal forces acting on the motors is substantially balanced out. As shown, pistons 50, 52 are arranged to move in opposite radial directions for a given direction of blade adjustment. <IMAGE>
GB7923108A 1978-04-20 1979-07-03 Bladed rotors Expired GB2022534B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7923108A GB2022534B (en) 1978-04-20 1979-07-03 Bladed rotors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1557478 1978-04-20
GB7923108A GB2022534B (en) 1978-04-20 1979-07-03 Bladed rotors

Publications (2)

Publication Number Publication Date
GB2022534A true GB2022534A (en) 1979-12-19
GB2022534B GB2022534B (en) 1982-06-30

Family

ID=26251395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7923108A Expired GB2022534B (en) 1978-04-20 1979-07-03 Bladed rotors

Country Status (1)

Country Link
GB (1) GB2022534B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810164A (en) * 1986-12-24 1989-03-07 Rolls-Royce Plc Pitch change arrangement for a variable pitch fan
WO2002048545A1 (en) * 2000-12-12 2002-06-20 Bosch Rexroth Ag Hydraulic unit for adjusting the rotor blades of a wind turbine
GB2371837A (en) * 2000-12-19 2002-08-07 Pro Design Solutions Ltd Pitch adjustment mechanism
GB2341424B (en) * 1998-07-15 2003-01-29 Flexxaire Mfg Variable pitch fan
US6644922B2 (en) 1998-07-15 2003-11-11 Flexxaire Manufacturing Inc. Variable pitch fan
GB2397627A (en) * 2000-12-19 2004-07-28 Pro Design Solutions Ltd Pitch adjustment mechanism
US7229250B2 (en) 2003-10-20 2007-06-12 Flexxaire Manufacturing Inc. Control system for variable pitch fan
EP1959129A2 (en) * 2007-02-14 2008-08-20 Nordex Energy GmbH Wind turbine
EP2284390A1 (en) * 2009-07-10 2011-02-16 Vestas Wind Systems A/S Hydraulic station and method for controlling pressure in a hydraulic system of a wind turbine
EP2328261A3 (en) * 2009-11-26 2017-01-18 Krebs & Aulich GmbH Electric actuator
FR3046406A1 (en) * 2016-01-05 2017-07-07 Snecma DEVICE FOR CONTROLLING THE ORIENTATION OF BLOWER BLADES OF A TURBOPROPULSEUR
CN109751194A (en) * 2019-01-25 2019-05-14 王壮 A kind of ship wind power generation plant
CN113339354A (en) * 2021-08-02 2021-09-03 中国电建集团透平科技有限公司 Moving blade adjusting device of axial flow fan

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810164A (en) * 1986-12-24 1989-03-07 Rolls-Royce Plc Pitch change arrangement for a variable pitch fan
GB2341424B (en) * 1998-07-15 2003-01-29 Flexxaire Mfg Variable pitch fan
US6644922B2 (en) 1998-07-15 2003-11-11 Flexxaire Manufacturing Inc. Variable pitch fan
WO2002048545A1 (en) * 2000-12-12 2002-06-20 Bosch Rexroth Ag Hydraulic unit for adjusting the rotor blades of a wind turbine
GB2371837A (en) * 2000-12-19 2002-08-07 Pro Design Solutions Ltd Pitch adjustment mechanism
GB2371837B (en) * 2000-12-19 2004-06-30 Pro Design Solutions Ltd Pitch adjustment mechanism
GB2397627A (en) * 2000-12-19 2004-07-28 Pro Design Solutions Ltd Pitch adjustment mechanism
US7229250B2 (en) 2003-10-20 2007-06-12 Flexxaire Manufacturing Inc. Control system for variable pitch fan
EP1959129A2 (en) * 2007-02-14 2008-08-20 Nordex Energy GmbH Wind turbine
EP1959129A3 (en) * 2007-02-14 2010-06-16 Nordex Energy GmbH Wind turbine
CN101245761B (en) * 2007-02-14 2012-09-12 诺德克斯能源有限公司 Wind energy plant with a rotor hub
EP2284390A1 (en) * 2009-07-10 2011-02-16 Vestas Wind Systems A/S Hydraulic station and method for controlling pressure in a hydraulic system of a wind turbine
EP2328261A3 (en) * 2009-11-26 2017-01-18 Krebs & Aulich GmbH Electric actuator
FR3046406A1 (en) * 2016-01-05 2017-07-07 Snecma DEVICE FOR CONTROLLING THE ORIENTATION OF BLOWER BLADES OF A TURBOPROPULSEUR
CN109751194A (en) * 2019-01-25 2019-05-14 王壮 A kind of ship wind power generation plant
CN113339354A (en) * 2021-08-02 2021-09-03 中国电建集团透平科技有限公司 Moving blade adjusting device of axial flow fan

Also Published As

Publication number Publication date
GB2022534B (en) 1982-06-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930703