WO2017037627A1 - Système de positionnement angulaire de roue hydraulique - Google Patents

Système de positionnement angulaire de roue hydraulique Download PDF

Info

Publication number
WO2017037627A1
WO2017037627A1 PCT/IB2016/055192 IB2016055192W WO2017037627A1 WO 2017037627 A1 WO2017037627 A1 WO 2017037627A1 IB 2016055192 W IB2016055192 W IB 2016055192W WO 2017037627 A1 WO2017037627 A1 WO 2017037627A1
Authority
WO
WIPO (PCT)
Prior art keywords
oscillating
motion
turbine
rods
blades
Prior art date
Application number
PCT/IB2016/055192
Other languages
English (en)
Inventor
Orlando Lozzi
Original Assignee
Orlando Lozzi
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 Orlando Lozzi filed Critical Orlando Lozzi
Publication of WO2017037627A1 publication Critical patent/WO2017037627A1/fr

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
    • 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"
    • F03B17/062—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 at right angle to flow direction
    • F03B17/065—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 at right angle to flow direction the flow engaging parts having a cyclic movement relative to the rotor during its rotation
    • 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
    • F05B2260/40—Transmission of power
    • F05B2260/406—Transmission of power through hydraulic systems
    • 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
    • F05B2260/72—Adjusting of angle of incidence or attack of rotating blades by turning around an axis parallel to 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
    • F05B2260/79—Bearing, support or actuation arrangements therefor
    • 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

Definitions

  • the invention relates to an angular positioning system of a hydraulic turbine impeller. More particularly, the invention relates to an angular positioning system that is controlled automatically by means of a programmable electronic unit.
  • the system according to the invention is adapted to vary simultaneously the angular position of a plurality of blades mounted on pivoting shafts, preferably substantially parallel, that are rotatably associated to a hydraulic turbine impeller.
  • the shafts of the blades have substantially mutually parallel axes and are arranged equidistantly along corresponding generatrices of an imaginary cylinder rotating about a central rotation axis of the turbine impeller.
  • Hydraulic turbines are machines that, together with steam engines, have led to the industrial development of the modern era, making available large amounts of energy.
  • many types of hydraulic turbines have been conceived, designed and built.
  • a particular type is represented by free-flow hydraulic turbines, i.e. turbines that do not require penstocks nor reservoirs (dams and side works).
  • the installation of hydraulic free-flow turbines is usually feasible particularly in the fast sections of rivers with considerable water flow and in marine currents.
  • These freeflow hydraulic machines require use of equipment and automation systems susceptible to adapt the configuration of the turbine, and in particular of the blades of the turbine impeller, to the working conditions and the operating parameters, such as speed and direction of the current and the level of the free surface of water.
  • An example of a turbine equipped with automation system is described in US 5324164. Because of their complexity, only recently, practically during the last decade, freeflow turbines have been the subject of interest in the hydropower field.
  • the main object of the present invention is to make free-flow hydraulic turbines even more competitive and versatile by providing a simple and compact angular positioning system for the blades of a hydraulic turbine impeller.
  • a further object of the invention is to provide an angular positioning system for the blades of a hydraulic turbine impeller, more particularly of a free-flow hydraulic turbine impeller, that can be manufactured in a cost-effective way and therefore lends itself to be produced industrially on a large scale.
  • the angular positioning systems for a hydraulic turbine impeller comprises substantially an oscillating assembly transmitting the motion imparted by a single, electronically driven actuator to a plurality of assemblies that convert oscillating motion to rotary motion and are associated to corresponding pivoting blades of the impeller.
  • said oscillating assembly consists mainly of an oscillating flange integral to an oscillating hub about which a rotating disk rotates.
  • the rotating disk is further associated to a plurality of rods controlling corresponding oscillating brackets or rockers.
  • An oscillating ring is associated to each bracket, said oscillating ring housing internally a screw nut associated in turn to a screw attached to the shaft of a corresponding blade of the turbine.
  • the screw and the screw nut by mutually cooperating, cause conversion of the oscillating motion of the ring to the rotary motion of the shaft of the turbine blade associated thereto.
  • the oscillating assembly is driven by a single actuating cylinder controlled by a programmable electronic control unit or a control unit or a computer.
  • the positioning system according to the invention allows to obtain a high fluid-dynamic performance in a hydraulic turbine.
  • the system according to the invention is arranged to equip a free- flow hydraulic turbine having an array of blades pivoting about axes mutually parallel and parallel to the rotation axis of the turbine impeller, said axes being in a configuration in which the shafts of the blades are equidistant along corresponding generatrices of an imaginary cylinder rotating about a central rotation axis of the turbine.
  • the angular positioning system allows to dynamically and simultaneously orient the blades of the turbine in a simple and cost-effective way and by using a kinematic chain having a small number of components.
  • the positioning system is provided with a single actuator, preferably of the hydraulic type.
  • Fig. l is a longitudinal sectional view of the angular positioning system according to a preferred embodiment of the invention.
  • Fig.2A is a side plan view of a first detail of the system of Fig.1;
  • Fig.2B is a partially sectional top plan view of the detail of Fig.2A;
  • Fig.3A is a side plan view of a second detail of the system of Fig.1;
  • Fig.3B is a longitudinal sectional view of a third detail of the system of Fig. l;
  • Fig.3C is a top plan view of a fourth detail of the system of Fig.1;
  • Fig.4 is a longitudinal sectional view of a fifth detail of the system oFig. l;
  • Fig.5 is a top plan view of a hydraulic turbine impeller equipped with the positioning system according to the invention.
  • the reference numeral 1 indicates a flange firmly attached to a frame, not illustrated, of a machine incorporating a hydraulic turbine equipped with the illustrated positioning system.
  • the flange 1 rigidly supports at its inside a first end of a central vertical shaft 3.
  • the shaft 3 is fixed relative to the flange 1 and, consequently, relative to the frame of the machine incorporating the hydraulic turbine.
  • the shaft 3 has a radial hinge pin Co. In the illustrated embodiment, the pin Co is arranged approximately at half length of the shaft 3.
  • An oscillating flange 6 surrounds the shaft 3 and is integral to an oscillating hub 6a hinged to the hinge pin Co.
  • the flange 6 and the hub 6a can be made as a single piece or as two separate parts held together by known securing means.
  • the oscillating hub 6a of the oscillating flange 6 is sized and shaped internally so as to oscillate about the hinge pin Co by an angle ⁇ ⁇ relative to the axis of the shaft 3. More particularly, the inner surface of the hub 6a is flared outwards at both its ends, with said inner flared portions converging substantially towards the middle of the length of the hub 6a. In this way the hub 6a can oscillate by said angle ⁇ ⁇ and the opposite flared surfaces act as stops for the oscillating movement against the outer surface of the shaft 3.
  • the hub 6a externally comprises radial bearings 6b rotatably supporting a rotating disk 7 mounted outside the oscillating hub 6a.
  • radial arms 7a preferably slidable radially, connected at one end, by means of a spherical joint 7b, to cylindrical rods 8 that are axially slidable and extend in parallel to the axis of the shaft 3.
  • the cylindrical rods 8 are further connected, at the end opposite to the spherical joint 7b, to brackets 10, at respective hinge pins W, preferably provided with roller pins.
  • the inner end or foot 10b of each bracket 10 is further hinged on a hinge pin F tangentially fixed to a central support 11 substantially coaxial to the shaft 3.
  • Each bracket 10 is further connected to a member converting oscillating motion to rotary motion, which member is in turn connected to a blade 19 of an array of blades 19 equipping a hydraulic turbine, as will become more apparent from the following description.
  • the oscillating flange 6 and the corresponding oscillating hub 6a are rotated about the hinge pin Co by means of an actuating cylinder 5, preferably of the hydraulic type, supplied by a control unit 4.
  • the control unit 4 comprises a hydraulic pump and a series of dual-flow, solenoid check valves, which ensure precision of the stroke Cs of the linear movement of the piston of the actuating cylinder 5.
  • the solenoid valves and the pump are slaved to a processor 2 that drives and controls operation of the control unit 4.
  • one of the ends of the actuating cylinder 5 is associated to the oscillating flange 6 and said actuating cylinder extends axially on the side opposite to said flange 6, of the axially movable rods 8.
  • the processor 2 is programmed for driving the actuating cylinder by making the piston of said actuating cylinder 5 perform a stroke Cs according to specific parameters, for example the instantaneous speed or prevailing direction of the river current in which the hydraulic turbine equipped with the positioning system is installed. These parameters can be measured by suitable sensors the signals of which are processed by the processor 2.
  • the stroke Cs of the piston of the actuating cylinder 5 determines the size of the inclination angle ⁇ of the oscillating flange 6 and of the corresponding oscillating hub 6a and, consequently, as will become apparent form the following description, the orientation of the blades 19 of the turbine equipped with the angular positioning system according to the invention.
  • the position of the piston of the actuating cylinder 5 and, therefore, the inclination angle ⁇ of the hub 6a and of the corresponding flange 6 are kept constant until said parameters vary, i.e. until the measured operating conditions of the turbine vary.
  • the rods 8 may preferably be from three to fifteen in number and are mounted slidably with low friction within slide guides comprising linear bearings 9 rigidly connected to a rotating casing 13 associated to the impeller of the turbine.
  • the cylindrical rods 8 therefore connect the brackets 10 to the rotating disk 7 and cause entrainment of the latter by virtue of the rotation of the rotating casing 13 through which the rods 8 extend.
  • the inclination angle ⁇ causes oscillation of the brackets 10 by an angle ⁇ ⁇ about the hinge pin F.
  • the rotating casing 13 further comprises a flanged plate 14 centrally fixed, for example by means of bolts, coaxially to the rotating drum 14a of an impeller of a hydraulic turbine equipped with the positioning system according to the invention.
  • the bracket 10 is illustrated therein in detail.
  • the bracket 10 is substantially "Y"- shaped and bears an oscillating ring 15 between the arms 10a of the "Y".
  • a screw nut 17 with multiple threads preferably from four to eight threads, is housed in the ring 15.
  • the screw nut 17 is locked in the ring 15 by means of a locking ferrule 16.
  • the screw nut 17 is preferably made of phosphor bronze.
  • the screw nut 17 is associated to a respective screw 18, preferably made of hardened and ground steel.
  • FIG. 4 this illustrates how the screw 18 is mounted integral to the shafts 22 of the blades 19 of a turbine equipped with the positioning system according to the invention.
  • the inclination of the bracket 10 by an angle ⁇ about the hinge pin F causes oscillation of the screw nut 17 with axial sliding of the screw nut 17 along the screw 18 and consequent conversion of the linear motion of the screw nut 17 to rotary motion of the screw 18 and of the shaft 22 of the blade 19 associated to said screw 18 by a corresponding angle x Vb.
  • the blades 19 assume an angle of incidence od during rotation at a speed ⁇ of the drum 14a of the turbine impeller bearing the blades 19.
  • the rotation of the drum 14a of the turbine determines every 180°, i.e. every half a turn, the transition from a positive value of said angle +*Fb to a corresponding negative value -*Fb, due to oscillation from the bottom to the top and vice versa, passing through zero, of the brackets 10 during rotation of the drum 14a of the turbine.
  • the blades 19 of the turbine are preferably mounted equidistant on the rotating drum 14a supporting the shafts 22 of the blades 19 by means of supports 20 provided with ball bearings.
  • the positioning system according to the invention is compact, simple and reliable.
  • the positioning system according to the invention can be incorporated in free-flow hydraulic turbines with automatic blade orientation that are capable of being installed in rivers or the like and do not require penstocks and dam works, with remarkable economic benefits both at the building stage of the hydroelectric installation in which the turbine is incorporated and at the management stage of the power plant.

Landscapes

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

Abstract

Système de positionnement angulaire destiné à une roue de turbine hydraulique, comprenant un ensemble oscillant (6, 6a, 7, 7a, 7b, 8, 10, 15) qui transmet le mouvement communiqué par un actionneur unique (5) à commande électronique à une pluralité d'ensembles (16, 17, 18) qui convertissent le mouvement oscillant en mouvement rotatif et sont associés à des aubes orientables (19) correspondantes de la roue.
PCT/IB2016/055192 2015-08-31 2016-08-31 Système de positionnement angulaire de roue hydraulique WO2017037627A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB2015A003593A ITUB20153593A1 (it) 2015-08-31 2015-08-31 Cinematismo per il comando delle pale di turbine idrauliche a flusso libero
IT102015000047485 2015-08-31

Publications (1)

Publication Number Publication Date
WO2017037627A1 true WO2017037627A1 (fr) 2017-03-09

Family

ID=54844002

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2016/055192 WO2017037627A1 (fr) 2015-08-31 2016-08-31 Système de positionnement angulaire de roue hydraulique

Country Status (2)

Country Link
IT (1) ITUB20153593A1 (fr)
WO (1) WO2017037627A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2357228A (en) * 1941-03-07 1944-08-29 English Electric Co Ltd Hydraulic turbine
US4380417A (en) * 1979-07-11 1983-04-19 J. M. Voith Gmbh Installation operated with wind or water power
JPS61135988A (ja) * 1984-12-04 1986-06-23 Fuji Electric Co Ltd ランナベ−ン操作装置
US5324164A (en) * 1991-06-13 1994-06-28 Doering John N Fluid active device
US20140308130A1 (en) * 2011-11-21 2014-10-16 Piergiorgio Pasetto Fluid dynamic machine with one or more impellers with restrained control mobile blades

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL272621A (fr) * 1961-01-13

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2357228A (en) * 1941-03-07 1944-08-29 English Electric Co Ltd Hydraulic turbine
US4380417A (en) * 1979-07-11 1983-04-19 J. M. Voith Gmbh Installation operated with wind or water power
JPS61135988A (ja) * 1984-12-04 1986-06-23 Fuji Electric Co Ltd ランナベ−ン操作装置
US5324164A (en) * 1991-06-13 1994-06-28 Doering John N Fluid active device
US20140308130A1 (en) * 2011-11-21 2014-10-16 Piergiorgio Pasetto Fluid dynamic machine with one or more impellers with restrained control mobile blades

Also Published As

Publication number Publication date
ITUB20153593A1 (it) 2017-03-03

Similar Documents

Publication Publication Date Title
US8864439B2 (en) Tidal flow hydroelectric turbine
US7378750B2 (en) Tidal flow hydroelectric turbine
US9657716B2 (en) Rotational support of a wind turbine blade
DK2776704T3 (en) Turbine for a hydro plant and hydro plant
EP2644884B1 (fr) Dispositif générateur d'électricité à flux d'eau
EP2497878B1 (fr) Bride et système d'énergie éolienne
US10247166B2 (en) Device for reversing a blade of a runner unit
WO2015022598A1 (fr) Dispositif intégré pour exploiter l'énergie d'un courant de fluide s'écoulant dans une tuyauterie en vue de sa transformation directe en énergie mécanique ou électrique
WO2017037627A1 (fr) Système de positionnement angulaire de roue hydraulique
EP3104000A1 (fr) Roue mobile de centrale marémotrice et centrale marémotrice comprenant une telle roue
US20130323059A1 (en) Wind turbine generator
CN104100574A (zh) 一种风机扩压导叶同步调整机构
CN207454176U (zh) 一种风力发电机组变桨装置
US10598144B2 (en) Device for reversing a blade of a runner unit
RU2616334C1 (ru) Ортогональная турбина (варианты)
KR101629354B1 (ko) 풍력발전기용 블레이드 피치 조절장치 및 이를 포함하는 풍력발전기
SĂULESCU et al. KINEMATIC AND STATIC MODELLING OF THE ADJUSTABLE-BLADE MECHANISM USED IN KAPLAN TURBINES
CN202520647U (zh) 轴流通风机叶片调节机构
Saulescu et al. Kinematic and Static Modelling of the Adjustable-Blade Mechanismuse din Kaplan Turbines
KR20110110706A (ko) 유체에너지 수득장치
NZ701717B (en) Adjusting device for turbine rotor blades
CN103511172A (zh) 浆叶调节装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16778877

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16778877

Country of ref document: EP

Kind code of ref document: A1