CA2389763A1 - Hydraulic turbine with aeration by intermediate belt - Google Patents

Hydraulic turbine with aeration by intermediate belt Download PDF

Info

Publication number
CA2389763A1
CA2389763A1 CA002389763A CA2389763A CA2389763A1 CA 2389763 A1 CA2389763 A1 CA 2389763A1 CA 002389763 A CA002389763 A CA 002389763A CA 2389763 A CA2389763 A CA 2389763A CA 2389763 A1 CA2389763 A1 CA 2389763A1
Authority
CA
Canada
Prior art keywords
intermediate belt
air
aeration
hydraulic turbine
belt
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.)
Abandoned
Application number
CA002389763A
Other languages
French (fr)
Inventor
Michel Sabourin
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.)
Alstom Canada Inc
Original Assignee
Alstom Canada Inc
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 Alstom Canada Inc filed Critical Alstom Canada Inc
Priority to CA002389763A priority Critical patent/CA2389763A1/en
Publication of CA2389763A1 publication Critical patent/CA2389763A1/en
Abandoned legal-status Critical Current

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
    • F03B3/02—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
    • 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
    • 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
    • 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)

Description

TURBINE HYDRAULIQUE AVEC AÉRATION PAR CEINTURE INTERMEDIAIRE
DOMAINE D'APPLICATION
La présente invention concerne un dispositif d'aération pour une turbine hydraulique, permettant d'augmenter la teneur en oxygène dissous de l'eau qui traverse la turbine dans un but écologique. Les turbines à aubes fixes comme les turbines Francis et hélices sont visées par le dispositif selon la présente invention.
AVANTAGE DE CE DISPOSITIF D'AÉRATION
Le dispositif d'aération selon la prësente invention permet d'introduire de l'air atmosphérique dans l'e<~u sur toutes les plages de fonctionnement de la turbine. Intrinsèquement, sans air injecté, son impact sur les performances est très peu important . Lors de l' admission de l' a:ir, le:~ performances de la turbine sont légèrement modifiées en proportion de l'air admis. De plus, par sa structure mécanique, le dispositif selon la prësente invenr.ion diminue les concentrations de contrainte dans la roue, augmente les fréquences naturelles par augmentation de la rigidité et, en modifiant les écoulements, diminue les charges dynamiques permettant ainsi d'augmenter d'une façon significative la vie en fatigue de la roue.
PARTICULARITÉ DU DISPOSITIF D'AÉRATION SELON LA PRÉSENTE
INVENTION
Le dispositif est constitué d'entretoises disposées entre les aubes et qui forment ur:e ceinture intermédiaire localisée entre le plafond et la ceint=ure de la roue. Cette ceinture intermédiaire est évidée. Ä son bord de fuite, à cause de l'écoulement de l'eau, il se crée une déprE=_ssion qui permet d'aspirer de l'air. Le creux de la ceinture intermédiaire communique avec des canaux internes aux aubes qui débouchent à l'atmosphère et qui alimentent en air le système.
Le système se distingue des autres syatèmes d'aération par la ceinture intermédiaire qui divise l'écoulement principal de l'eau en une zone supérweure et en une zone inférieure. De plus, l'air est aspiré par la dépression qui se crée au bord de fuite de cette ceinture interrnédiaire. Les aubes ne nécessitent pas d'ëpaississement â leur bord de fuite et ont donc des bords de fuite tout à fait habituels.
DESCRIPTION DÉTAILLÉE
Sur la figure 1, la direction principale de l'écoulement de l'eau dans la roue est montrée par des flèches. On y voit aussi comment l'air est amené par des canau:~ situés dans les aubes jusque dans la ceinture intermédiaire et finalement au bord de fuite de la ceinture où l'ai.r se mélange â l'eau.
LE PRINCIPE DE FONCTIONNEMENT
Le dispositif selon l'invention fonctionne de façon autonome et continue . Un robinet su r l' admis:~:ior~ d' air à l' extérieur de la roue permet de doser le mélange air-eau selon les besoins.
VARIANTES
Il peut y avoir plus d'une ceinture intermédiaire et leur position et leur longueur peuvent varier. Aussi, il peut L

s'agir d'entretoises périodiques au lieu de la forme axisymétrique montrée. Cette invention s'applique aussi aux turbines hélices, diagonales, "mixed flow" et toutes les turbines à aubes fixes.
IMPLANTATION DE CE DTSPOSITLF
En pratique, le dispositif selon l'invention s'installe plus facilement sur une roue durant sa fabrication. I1 faut que la ceinture, le plafond et les aubes soient munis des canaux pour acheminer l'air jusqu'à l'espace évidée des entretoises.
Le système extérieur à la roue qui achemine l'air est assez courant dans les installations hydrauliques.
Bien que des réalisations de l'invention aient été illustrées dans les dessins ci-joints et dëcrites ci-dessus, il apparaîtra évident pour les personnes versées dans l'art que des changements et des modifications peuvent être apportés à
ces réalisations sans s'écarter de l'essence de l'invention. HYDRAULIC TURBINE WITH INTERMEDIATE BELT VENTILATION
APPLICATION DOMAIN
The present invention relates to a ventilation device for a hydraulic turbine, making it possible to increase the content of dissolved oxygen from the water flowing through the turbine for a purpose ecological. Fixed blade turbines like turbines Francis and propellers are targeted by the device according to the present invention.
ADVANTAGE OF THIS AERATION DEVICE
The ventilation device according to the present invention allows to introduce atmospheric air into the water on all turbine operating ranges. Inherently, without injected air, its impact on performance is very little important. Upon admission of the a: ir, the: ~ performance of the turbine are slightly modified in proportion to the air admitted. In addition, by its mechanical structure, the device according to the present invention decreases the concentrations of stress in the wheel, increases natural frequencies by increasing the rigidity and, by modifying the flows, decreases the dynamic loads thus allowing significantly increase the fatigue life of the wheel.
SPECIAL FEATURES OF THE AERATION DEVICE AS PRESENT
INVENTION
The device consists of spacers arranged between the blades and which form ur: e localized intermediate belt between the ceiling and the belt of the wheel. This belt intermediary is hollowed out. At its trailing edge, because of the flow of water, it creates a depression = _ssion which allows to suck in air. The hollow of the intermediate belt communicates with internal channels at the blades which open out to the atmosphere and supplying air to the system.
The system is distinguished from other ventilation systems by the intermediate belt which divides the main flow of water in an upper zone and in a lower zone. Of more, the air is sucked by the depression which is created at the edge leakage of this intermediate belt. The blades don't require no thickening at their trailing edge and have therefore very usual trailing edges.
DETAILED DESCRIPTION
In Figure 1, the main direction of flow of the water in the wheel is shown by arrows. We see also how the air is supplied by channels: ~ located in the blades up to the intermediate belt and finally to trailing edge of the belt where the air mixes with water.
THE PRINCIPE OF FONCTIONMENT
The device according to the invention operates autonomously and carry on . An admitted tap:: ior ~ outside air of the wheel allows the air-water mixture to be dosed according to the needs.
VARIATIONS
There may be more than one intermediate belt and their position and length may vary. Also, he can The be periodic spacers instead of form axisymmetric shown. This invention also applies to propeller, diagonal, mixed flow turbines and all stationary vane turbines.
IMPLEMENTATION OF THIS DTSPOSITLF
In practice, the device according to the invention is installed more easily on a wheel during its manufacture. The belt, the ceiling and the blades are provided with channels to convey the air to the hollow space of the spacers.
The system outside the wheel that carries the air is quite current in hydraulic installations.
Although embodiments of the invention have been illustrated in the attached drawings and described above, there will appear obvious to those skilled in the art that changes and modifications can be made to these achievements without departing from the essence of the invention.

CA002389763A 2002-06-12 2002-06-12 Hydraulic turbine with aeration by intermediate belt Abandoned CA2389763A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002389763A CA2389763A1 (en) 2002-06-12 2002-06-12 Hydraulic turbine with aeration by intermediate belt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002389763A CA2389763A1 (en) 2002-06-12 2002-06-12 Hydraulic turbine with aeration by intermediate belt

Publications (1)

Publication Number Publication Date
CA2389763A1 true CA2389763A1 (en) 2003-12-12

Family

ID=30121027

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002389763A Abandoned CA2389763A1 (en) 2002-06-12 2002-06-12 Hydraulic turbine with aeration by intermediate belt

Country Status (1)

Country Link
CA (1) CA2389763A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2490512C1 (en) * 2012-03-27 2013-08-20 Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") Method to aerate water flow supplied to hydraulic turbine and related device
CN108368820A (en) * 2015-12-23 2018-08-03 福伊特专利有限公司 The method of runner and this runner of operation for water turbine or pump
WO2022171336A1 (en) * 2021-02-11 2022-08-18 Voith Patent Gmbh Runner for a hydraulic turbine or pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2490512C1 (en) * 2012-03-27 2013-08-20 Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") Method to aerate water flow supplied to hydraulic turbine and related device
CN108368820A (en) * 2015-12-23 2018-08-03 福伊特专利有限公司 The method of runner and this runner of operation for water turbine or pump
WO2022171336A1 (en) * 2021-02-11 2022-08-18 Voith Patent Gmbh Runner for a hydraulic turbine or pump

Similar Documents

Publication Publication Date Title
EP2174001B1 (en) Hydraulic machine including means for injecting a flow drawn from a main flow
US4174923A (en) Wind driven engine
CA2592272C (en) Rotary movement mixer for a confluent flow nozzle of a turbine engine
FR2927670A1 (en) WHEEL FOR HYDRAULIC MACHINE, HYDRAULIC MACHINE COMPRISING SUCH A WHEEL AND ENERGY CONVERSION INSTALLATION EQUIPPED WITH SUCH A HYDRAULIC MACHINE.
FR2966879A1 (en) SYSTEM AND METHOD FOR EXHAUST DIFFUSION FOR TURBINE
CA2873942A1 (en) Fan blade for a turbojet of an aircraft having a cambered profile in the foot sections
FR2605357A1 (en) INTAKE FOR A TURBO-PROPELLER GAS TURBINE ENGINE
CA2389763A1 (en) Hydraulic turbine with aeration by intermediate belt
EP2395231A2 (en) Arrangement of blades of a rotary mobile such as a marine turbine
JP2007524028A (en) Improved silencer
FR2965292A1 (en) TURBINE MOBILE TURBINE END FAIRING INTENDED TO SERVE WITH A END GAME LIMITATION SYSTEM
EP2376805B1 (en) Aircraft turbine engine, use of such a turbine engine, and corresponding aircraft
FR2522363A1 (en) GAS TURBINE ENGINE STATOR FIN ASSEMBLY
WO2011124839A1 (en) Engine compressor, particularly aircraft jet engine compressor, fitted with an air bleed system
FR2601078A1 (en) GAS TURBINE ENGINE WITH FAIRED BLOWER.
FR3006011A1 (en) PROCESS FOR MANUFACTURING A ROTATING PART OF A HYDRAULIC MACHINE, ROTATING PART MANUFACTURED ACCORDING TO THIS METHOD, HYDRAULIC MACHINE AND ENERGY CONVERSION PLANT
EP3829975B1 (en) Turbomachine with coaxial propellers
FR2867506A1 (en) Guide vane for use on stator of jet engine, has rib directed in direction of gas flow traversing vane for dampening vibrations of vane, and placed at back side of vane closer to trailing edge than leading edge of vane
CA3135098A1 (en) Turbojet comprising a nacelle with an air intake for promoting a reverse thrust phase
FR2598184A1 (en) Axial fan
BE1029739B1 (en) Wind turbine with axis perpendicular to the direction of the wind
FR2813219A1 (en) DEVICE FOR TREATING ATMOSPHERIC POLLUTIONS, IN PARTICULAR OLFACTIVE
FR3001501A1 (en) Double adjustment turbine e.g. Kaplan turbine, for use in installation of hydraulic transformation of mechanical energy or electrical energy, has blades, where one blade includes lip that extends along section on side from back of plate
FR2981399A1 (en) ASYMMETRIC BUTTERFLY PLATE FOR STEAM TURBINE EXHAUST COVER
FR2473638A1 (en) Wind turbine with vertical rotor - has concrete stator panels defining tapering intake channels for max. wind utilisation

Legal Events

Date Code Title Description
FZDE Dead