GB201222892D0 - System for reducing hydrodynamic loads on turbine blades in flowing water - Google Patents

System for reducing hydrodynamic loads on turbine blades in flowing water

Info

Publication number
GB201222892D0
GB201222892D0 GBGB1222892.0A GB201222892A GB201222892D0 GB 201222892 D0 GB201222892 D0 GB 201222892D0 GB 201222892 A GB201222892 A GB 201222892A GB 201222892 D0 GB201222892 D0 GB 201222892D0
Authority
GB
United Kingdom
Prior art keywords
blade
orifice
flowing water
turbine blades
hydrodynamic loads
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
GBGB1222892.0A
Other versions
GB2499700A (en
GB2499700B (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.)
Ocean Flow Energy Ltd
Original Assignee
Ocean Flow Energy 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 Ocean Flow Energy Ltd filed Critical Ocean Flow Energy Ltd
Publication of GB201222892D0 publication Critical patent/GB201222892D0/en
Publication of GB2499700A publication Critical patent/GB2499700A/en
Application granted granted Critical
Publication of GB2499700B publication Critical patent/GB2499700B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/126—Rotors for essentially axial flow, e.g. for propeller turbines
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/002—Injecting air or other fluid
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
    • F03B13/264—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy using the horizontal flow of water resulting from tide movement
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B15/00—Controlling
    • F03B15/02—Controlling by varying liquid flow
    • F03B15/04—Controlling by varying liquid flow of turbines
    • F03B15/06—Regulating, i.e. acting automatically
    • F03B15/18—Regulating, i.e. acting automatically for safety purposes, e.g. preventing overspeed
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/061—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially in flow direction
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/121—Blades, their form or construction
    • 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
    • F05B2270/10—Purpose of the control system
    • F05B2270/101—Purpose of the control system to control rotational speed (n)
    • F05B2270/1011—Purpose of the control system to control rotational speed (n) to prevent overspeed
    • 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
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oceanography (AREA)
  • Power Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Hydraulic Turbines (AREA)

Abstract

A water turbine blade 1 has at least one orifice 2 on the suction face of the blade 1 and a fluid passageway 4 in communication with the at least one orifice 2. A fluid such as air is provided to the orifice(s) 2 to reduce hydrodynamic loads on the blade e.g. to reduce over speed. The orifice(s) 2 may be located towards the tip of the blade, and a barrier 3 may be provided on the blade to prevent bubbles migrating to the radially inner region of the blade. The fluid may be compressed air, and may be provided via a passage 12 in the turbine shaft 11. Orifices 2 may be provided on both the suction and pressure faces of the blade, and may be located towards the leading edge of the blade.
GB1222892.0A 2011-12-20 2012-12-19 System for reducing hydrodynamic loads on turbine blades in flowing water Active GB2499700B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1121892.2A GB2497763A (en) 2011-12-20 2011-12-20 Air injection system for reducing hydrodynamic loads on water turbine blades

Publications (3)

Publication Number Publication Date
GB201222892D0 true GB201222892D0 (en) 2013-01-30
GB2499700A GB2499700A (en) 2013-08-28
GB2499700B GB2499700B (en) 2017-12-13

Family

ID=45572702

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1121892.2A Withdrawn GB2497763A (en) 2011-12-20 2011-12-20 Air injection system for reducing hydrodynamic loads on water turbine blades
GB1222892.0A Active GB2499700B (en) 2011-12-20 2012-12-19 System for reducing hydrodynamic loads on turbine blades in flowing water

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1121892.2A Withdrawn GB2497763A (en) 2011-12-20 2011-12-20 Air injection system for reducing hydrodynamic loads on water turbine blades

Country Status (2)

Country Link
GB (2) GB2497763A (en)
WO (1) WO2013093452A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105221321A (en) * 2014-06-25 2016-01-06 上海电气风电设备有限公司 The open blade structure of ocean current power generation unit inner chamber
DE102016207977A1 (en) * 2016-05-10 2017-05-11 Voith Patent Gmbh Impeller for a hydraulic machine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB986797A (en) * 1960-04-09 1965-03-24 Hussein Haekal Improvements in and relating to machines comprising a bladed rotor such as water turbines and pumps
US3305215A (en) * 1966-04-05 1967-02-21 Allis Chalmers Mfg Co Fluid cushion for hydraulic turbomachinery
FR2393964A1 (en) * 1977-06-08 1979-01-05 Alsthom Atlantique METHOD FOR PREVENTING DESTRUCTIVE PHENOMENA RELATED TO CAVITATION
GB8602008D0 (en) * 1986-02-28 1986-03-05 Int Research & Dev Co Ltd Wind turbine
FR2707974B1 (en) * 1993-07-20 1995-10-06 Fonkenell Jacques Water aerator.
US6524063B1 (en) * 1996-10-17 2003-02-25 Voith Siemens Hydro Power Generartion, Inc. Hydraulic turbine for enhancing the level of dissolved gas in water
JP2007218099A (en) * 2006-02-14 2007-08-30 Tokyo Electric Power Co Inc:The Hydraulic turbine runner and hydraulic turbine runner system
US8807940B2 (en) * 2007-01-05 2014-08-19 Lm Glasfiber A/S Wind turbine blade with lift-regulating means in form of slots or holes
FR2914028B1 (en) * 2007-03-20 2012-09-21 Alstom Power Hydraulique HYDRAULIC MACHINE AND METHOD FOR PREVENTING THE WEAR OF SUCH A MACHINE
US7909575B2 (en) * 2007-06-25 2011-03-22 General Electric Company Power loss reduction in turbulent wind for a wind turbine using localized sensing and control
US20110103950A1 (en) * 2009-11-04 2011-05-05 General Electric Company System and method for providing a controlled flow of fluid to or from a wind turbine blade surface
GB2486699B (en) * 2010-12-23 2012-12-26 Tidal Generation Ltd Rotor blades

Also Published As

Publication number Publication date
GB201121892D0 (en) 2012-02-01
GB2499700A (en) 2013-08-28
GB2499700B (en) 2017-12-13
GB2497763A (en) 2013-06-26
WO2013093452A1 (en) 2013-06-27

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