GB2441270A - Impulse turbine with rotor blade for prevention clearance flow loss - Google Patents

Impulse turbine with rotor blade for prevention clearance flow loss Download PDF

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Publication number
GB2441270A
GB2441270A GB0724405A GB0724405A GB2441270A GB 2441270 A GB2441270 A GB 2441270A GB 0724405 A GB0724405 A GB 0724405A GB 0724405 A GB0724405 A GB 0724405A GB 2441270 A GB2441270 A GB 2441270A
Authority
GB
United Kingdom
Prior art keywords
duct
rotor
impulse turbine
stator
rotor blades
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
GB0724405A
Other versions
GB0724405D0 (en
GB2441270B (en
Inventor
Ki-Sup Kim
Seok-Won Hong
Young-Yeon Lee
Beom-Soo Hyun
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.)
Korea Ocean Research and Development Institute (KORDI)
Original Assignee
Korea Ocean Research and Development Institute (KORDI)
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 Korea Ocean Research and Development Institute (KORDI) filed Critical Korea Ocean Research and Development Institute (KORDI)
Publication of GB0724405D0 publication Critical patent/GB0724405D0/en
Publication of GB2441270A publication Critical patent/GB2441270A/en
Application granted granted Critical
Publication of GB2441270B publication Critical patent/GB2441270B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
    • 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
    • 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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
    • F01D1/026—Impact turbines with buckets, i.e. impulse turbines, e.g. Pelton turbines
    • 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
    • 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
    • F01D5/20—Specially-shaped blade tips to seal space between tips and stator
    • 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
    • F03B11/006—Sealing arrangements
    • 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
    • F05B2210/00—Working fluid
    • F05B2210/40—Flow geometry or direction
    • F05B2210/404—Flow geometry or direction bidirectional, i.e. in opposite, alternating directions
    • 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
    • F05D2210/00—Working fluids
    • F05D2210/40—Flow geometry or direction
    • F05D2210/44—Flow geometry or direction bidirectional, i.e. in opposite, alternating directions
    • 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
    • Y02E10/20—Hydro energy
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention relates to an improvement in the performance of a rotor that is a rotating part of an impulse turbine. More specifically, as an embodiment, the invention relates to an impulse turbine with rotor blades for prevention clearance flow loss, in which a duct groove is formed in an inner wall of a circular duct, a first stator blade part in which a plurality of first stator blades are formed at an outer circumferential edge of a first stator shaft is located on the central axis of the duct, a rotor blade part which abuts on one side of the first stator blade part and in which a plurality of rotor blades are formed at an outer circumferential edge of a rotor shaft is located on the central axis of the duct, a second stator blade part which abuts on one side of the rotor blade part and in which a plurality of second stator blades are formed at an outer circumferential edge of a second stator shaft is located on the central axis of the duct, and a cylindricalO-ring which is formed corresponding to the duct groove and is attached to tips of outer peripheral edges of the rotor blades. Rotor blades of a conventional impulse turbine have a flow clearance at the tips of the rotor blades while they rotate within a duct. Fluid leaks through the flow clearance. This reduces the efficiency of the turbine. In order to solve this problem, theinvention provides an impulse turbine with improved efficiency by forming a duct groove corresponding to rotor blades of the impulse turbine in a duct, and inserting the rotor blades into the duct, thereby minimizing flow clearance.

Description

<p>GB 2441270 A continiation (72) Inventor(s): Ki-Sup Kim Seok-Won Hong
Young-Yeon Lee Beom-Soo Hyun (74) Agent and/or Address for Service: Marks & Clerk Long Acre, LONDON, WC2E 9RA, United Kingdom</p>
GB0724405A 2005-06-23 2006-06-22 Impulse turbine with rotor blade for prevention clearance flow loss Active GB2441270B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020050054238A KR100720909B1 (en) 2005-06-23 2005-06-23 Impulse turbine with rotor blade for prevention against clearance flow loss
PCT/KR2006/002402 WO2006137696A1 (en) 2005-06-23 2006-06-22 Impulse turbine with rotor blade for prevention clearance flow loss

Publications (3)

Publication Number Publication Date
GB0724405D0 GB0724405D0 (en) 2008-01-30
GB2441270A true GB2441270A (en) 2008-02-27
GB2441270B GB2441270B (en) 2011-06-15

Family

ID=37570673

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0724405A Active GB2441270B (en) 2005-06-23 2006-06-22 Impulse turbine with rotor blade for prevention clearance flow loss

Country Status (4)

Country Link
JP (1) JP2008546947A (en)
KR (1) KR100720909B1 (en)
GB (1) GB2441270B (en)
WO (1) WO2006137696A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2440344A (en) 2006-07-26 2008-01-30 Christopher Freeman Impulse turbine design
DE102009057513B4 (en) 2009-12-10 2013-01-03 Voith Patent Gmbh Diffuser for the air turbine of a wave power plant
DE102009057511A1 (en) 2009-12-10 2011-06-16 Voith Patent Gmbh Power generation plant with an air turbine
KR20140056486A (en) * 2012-10-26 2014-05-12 주식회사 에이치케이터빈 Reaction type turbine system
WO2019173495A1 (en) 2018-03-06 2019-09-12 Indiana University Research And Technology Corporation Blood pressure powered auxiliary pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0726904A (en) * 1993-07-12 1995-01-27 Ishikawajima Harima Heavy Ind Co Ltd Blade tip structure of rotating machine
JPH10311205A (en) * 1997-05-14 1998-11-24 Toshiba Corp Axial flow turbine
KR20030094022A (en) * 2002-05-31 2003-12-11 제너럴 일렉트릭 캄파니 Covers for turbine buckets and methods of assembly
KR20050049368A (en) * 2003-11-20 2005-05-25 제너럴 일렉트릭 캄파니 Seal assembly for turbine, bucket/turbine including same, method for sealing interface between rotating and stationary components of a turbine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR662453A (en) * 1928-10-17 1929-08-07 Pneumatic turbine using the wave motion of sea or lake water
GB662453A (en) * 1948-02-09 1951-12-05 Philips Nv Improvements in or relating to electric arc-welding
JPS5617547B2 (en) * 1974-04-22 1981-04-23
JPS5361548U (en) * 1976-01-31 1978-05-25
JPS54159536A (en) * 1978-06-05 1979-12-17 Tideland Signal Corp Apparatus for converting water wave energy to electric power
JPH01151800A (en) * 1987-12-07 1989-06-14 Yoshiko Fujii Ring fan
JPH0264270A (en) * 1988-08-31 1990-03-05 Saga Univ Impulse turbine with self-variable pitch guide vanes
JP2761960B2 (en) * 1990-03-30 1998-06-04 財団法人鉄道総合技術研究所 Wind turbine generator for magnetic levitation vehicles
JPH10288139A (en) 1997-04-14 1998-10-27 Toshio Hatakeyama Unidirectional turbine and wave activated generator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0726904A (en) * 1993-07-12 1995-01-27 Ishikawajima Harima Heavy Ind Co Ltd Blade tip structure of rotating machine
JPH10311205A (en) * 1997-05-14 1998-11-24 Toshiba Corp Axial flow turbine
KR20030094022A (en) * 2002-05-31 2003-12-11 제너럴 일렉트릭 캄파니 Covers for turbine buckets and methods of assembly
KR20050049368A (en) * 2003-11-20 2005-05-25 제너럴 일렉트릭 캄파니 Seal assembly for turbine, bucket/turbine including same, method for sealing interface between rotating and stationary components of a turbine

Also Published As

Publication number Publication date
GB0724405D0 (en) 2008-01-30
WO2006137696A1 (en) 2006-12-28
KR20060134507A (en) 2006-12-28
GB2441270B (en) 2011-06-15
KR100720909B1 (en) 2007-05-22
JP2008546947A (en) 2008-12-25

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