CA2669946A1 - Hydraulic reaction turbine and method for reducing pressure fluctuations - Google Patents

Hydraulic reaction turbine and method for reducing pressure fluctuations Download PDF

Info

Publication number
CA2669946A1
CA2669946A1 CA002669946A CA2669946A CA2669946A1 CA 2669946 A1 CA2669946 A1 CA 2669946A1 CA 002669946 A CA002669946 A CA 002669946A CA 2669946 A CA2669946 A CA 2669946A CA 2669946 A1 CA2669946 A1 CA 2669946A1
Authority
CA
Canada
Prior art keywords
draft tube
runner
turbine according
pressure fluctuations
openings
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
CA002669946A
Other languages
French (fr)
Other versions
CA2669946C (en
Inventor
Anders Wedmark
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.)
Andritz Technology and Asset Management GmbH
GE Energy Norway AS
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2669946A1 publication Critical patent/CA2669946A1/en
Application granted granted Critical
Publication of CA2669946C publication Critical patent/CA2669946C/en
Expired - Fee Related 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
    • 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
    • F03B11/04—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator for diminishing cavitation or vibration, e.g. balancing
    • 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
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/02—Machines or engines of reaction type; Parts or details peculiar thereto with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)

Abstract

Hydraulic reaction turbine comprising, a runner, a draft tube (1) downstream of the runner, and - injection means (4,10) for introducing water into the draft tube in order to reduce pressure fluctuations therein, with one or more openings (10) in the draft tube wall (1a) adapted to substantially evenly distribute injected water in the axial and/or circumferential direction of the draft tube (1).

Claims (7)

1. Hydraulic reaction turbine comprising - a runner (100), - a draft tube (1) downstream of the runner, and - injection means (10,20) for introducing water into the draft tube in order to reduce pressure fluctuations therein, characterised in that said injection means comprise one or more openings (10,20) in the draft tube wall (1a) adapted to substantially evenly distribute injected water in the axial and/or circumferential direction of the draft tube (1).
2. Turbine according to claim 1, wherein said one or more openings has/have together a total extension in the axial and/or circumferential direction of the draft tube, being larger than a small fraction of the draft tube diameter immediately downstream of the runner.
3. Turbine according to claim 1 or 2, wherein said extension is inclined in relation to the draft tube axis.
4. Turbine according to claim 1, 2 or 3, wherein at least one opening (10) has an elongate shape with a longitudinal dimension being a multiple of the lateral dimension the opening, the longitudinal dimension being preferably one or two orders of magnitude larger than said lateral dimension.
5. Turbine according to claim 1, 2, 3 or 4, wherein said plurality of openings (20) are distributed around a substantial part of the circumference of the draft tube (1), preferable around at least half the circumference.
6. Turbine according to any one of claims 1-5, wherein said opening(s) (10,20) has/have on outwardly diverging flow cross-sectional area.
7. Method for reducing pressure fluctuations in the draft tube downstream of the runner in hydraulic reaction turbines, by injecting water through the draft tube wall at a level spaced from the runner, characterized in that water is injected so as to be substantially evenly distributed in the axial and/or circumferential direction of the draft tube.
CA2669946A 2006-11-16 2007-02-27 Hydraulic reaction turbine and method for reducing pressure fluctuations Expired - Fee Related CA2669946C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20065276 2006-11-16
NO20065276A NO325509B1 (en) 2006-11-16 2006-11-16 Hydraulic reaction turbine and process for reducing pressure fluctuations
PCT/NO2007/000078 WO2008060158A2 (en) 2006-11-16 2007-02-27 Hydraulic reaction turbine and method for reducing pressure fluctuations

Publications (2)

Publication Number Publication Date
CA2669946A1 true CA2669946A1 (en) 2008-05-22
CA2669946C CA2669946C (en) 2012-08-14

Family

ID=39402116

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2669946A Expired - Fee Related CA2669946C (en) 2006-11-16 2007-02-27 Hydraulic reaction turbine and method for reducing pressure fluctuations

Country Status (3)

Country Link
CA (1) CA2669946C (en)
NO (1) NO325509B1 (en)
WO (1) WO2008060158A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013019652A1 (en) * 2013-09-30 2015-04-02 Dieter Mühlenbruch Hydroelectric power station
CN103982357A (en) * 2014-05-26 2014-08-13 哈尔滨电机厂有限责任公司 Flow guide structure at water turbine runner outlet capable of weakening vortex strip of draft tube
EP3276157A1 (en) 2016-07-25 2018-01-31 GE Renewable Technologies Hydraulic turbine
WO2022189101A1 (en) * 2021-03-11 2022-09-15 Voith Patent Gmbh Hydroelectric turbine installation and operation method for enhancing the level of dissolved oxygen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971042C (en) * 1953-04-17 1958-11-27 Neyrpic Ets Reaction water turbine
CA1052662A (en) * 1976-11-26 1979-04-17 Paul Koeller Draft tube venting arrangement
US4515524A (en) * 1982-09-27 1985-05-07 Allis-Chalmers Corporation Draft tube for hydraulic turbine
JPS61294172A (en) * 1985-06-20 1986-12-24 Toshiba Eng Co Ltd Preventing apparatus for turbulence of water surface in suction pipe
ES2094336T3 (en) * 1992-04-14 1997-01-16 Ente Naz Energia Elettrica CONTROL OF HYDRAULIC PRESSURE IMPULSES AND POWER IN A REACTION HYDRAULIC TURBINE.
JP2001165025A (en) * 1999-12-14 2001-06-19 Toshiba Corp Pumped storage hydraulic machinery
US6971843B2 (en) * 2003-06-25 2005-12-06 General Electric Canada Inc. Hydraulic turbine draft tube with enhanced dissolved oxygen
NO20044391D0 (en) * 2004-10-18 2004-10-18 Troms Kraft Produksjon As Device and method of suction pipe

Also Published As

Publication number Publication date
NO20065276L (en) 2008-05-19
NO325509B1 (en) 2008-05-26
CA2669946C (en) 2012-08-14
WO2008060158A3 (en) 2010-09-30
WO2008060158A2 (en) 2008-05-22

Similar Documents

Publication Publication Date Title
WO2008050221A3 (en) Thermal storage device
EP2375163A3 (en) Segmented annular ring-manifold quaternary fuel distributor
CN203940145U (en) A kind of Bite type fittings
WO2008082316A3 (en) Water spray nozzle and method of optimization of working parameters of water spray nozzle
CA2669946A1 (en) Hydraulic reaction turbine and method for reducing pressure fluctuations
WO2010135025A3 (en) Methods and systems for mixing reactor feed
CN102909140B (en) Injection nozzle for sprinkling irrigation and fertilization of circular sprinkling irrigation machine
CN203705262U (en) Plastic pipe tensile jig
CN202889940U (en) Injection nozzle for sprinkling irrigation and fertilization of circular sprinkling irrigation machine
EP2067964A3 (en) Radial staging method and configuration of a liquid injection system for power plants
CN203023733U (en) Patch piece of water hose for trickle irrigation
CN202316151U (en) Nozzle for rinsing inner bores of steel tube
CN207660625U (en) The quick protrusion-dispelling water installations of the big water burst of high pressure
CN206289292U (en) A kind of casting pipe zinc spray production equipment combination is top
CN221547789U (en) Conical valve with valve core protected by natural aeration
CN203809890U (en) Pipeline
CN102371352A (en) Die casting mold point cooling pipe assembly
CN202291343U (en) Cooling pipe assembly for die-casting die point
CN201851746U (en) Pipe fitting connection structure
CN203809807U (en) Multi-orifice valve
CN202185097U (en) Large range fire-fighting lance
CN205370832U (en) Connection structure of spray tube needle stem
CN200983781Y (en) Micro- crawl diameter-changing labyrinth type drip irrigation belt
CN206859673U (en) A kind of shuttering fastening member for special building structure
CA2669840A1 (en) Hydraulic reaction turbine

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20170227