WO2013020578A1 - Génératrice à turbine - Google Patents

Génératrice à turbine Download PDF

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Publication number
WO2013020578A1
WO2013020578A1 PCT/EP2011/063584 EP2011063584W WO2013020578A1 WO 2013020578 A1 WO2013020578 A1 WO 2013020578A1 EP 2011063584 W EP2011063584 W EP 2011063584W WO 2013020578 A1 WO2013020578 A1 WO 2013020578A1
Authority
WO
WIPO (PCT)
Prior art keywords
turbine
seal
turbine generator
turbine runner
generator according
Prior art date
Application number
PCT/EP2011/063584
Other languages
German (de)
English (en)
Inventor
Henning Kern
Christina Pfeuffer
Original Assignee
Aktiebolaget Skf
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 Aktiebolaget Skf filed Critical Aktiebolaget Skf
Priority to EP11743509.9A priority Critical patent/EP2742232A1/fr
Priority to PCT/EP2011/063584 priority patent/WO2013020578A1/fr
Publication of WO2013020578A1 publication Critical patent/WO2013020578A1/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
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/04—Machines or engines of reaction type; Parts or details peculiar thereto with substantially axial flow throughout rotors, e.g. 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
    • F03B11/06—Bearing 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
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • 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
    • F05B2240/00—Components
    • F05B2240/50—Bearings
    • F05B2240/54—Radial bearings
    • 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
    • F05B2240/00—Components
    • F05B2240/57—Seals
    • 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
    • F05B2260/403—Transmission of power through the shape of the drive components
    • F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
    • 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 a turbine generator, in particular a water turbine generator for generating electricity from a water flow, comprising a turbine runner and an electric generator.
  • US 2009/0115193 A1 describes a water turbine generator in which a water flow drives a turbine runner connected to a plurality of generators.
  • the hydro turbine generator can be used in flowing waters, such as rivers, streams, canals, tidal coves or oceans.
  • the turbine wheel surrounds a ring gear that meshes with four gears that sit on the shafts of the generators. Due to the direct bearing of the turbine impeller on the shafts of the generators, the bearing forces of the turbine impeller must be absorbed by the generators.
  • at least three generators are necessary to be able to store the turbine wheel at all.
  • US 7,218,011 B2 describes a turbine runner supported by bearings which may be supported by magnetic bearings. By Ge Reifenhausenen a proppant is formed.
  • the bearings are designed as slide bearings or split bearings, which can be supported by magnetic bearings at higher rotational speeds.
  • FR 2 795 140 AI describes a turbine wheel which is mounted by means of ball bearings. The turbine wheel is supported on a concrete foundation of a riverbed.
  • EP 1 885 047 A1 describes magnetic bearings for supporting a plurality of turbine runners.
  • the object of the invention is to provide a water turbine generator in which the bearing of the turbine runner is improved.
  • a turbine generator in particular a water turbine generator for power generation from a water flow, comprising a turbine runner, an electric generator and a support means by which a mutual position of the turbine runner and generator is determined to each other, and a transmission for transmitting a torque of the turbine runner on a shaft of the generator, further comprising a bearing having an outer ring connected to the support means and an inner ring connected to the turbine runner, which surrounds a guided through the turbine runner flow, the bearing having a double row tapered roller bearing.
  • the bearing surrounds the flow guided by the turbine runner, it is possible to dispense with internals to be provided within the flow for supporting the turbine runner. Since there are no disturbing the flow internals, the efficiency of the turbine generator can be improved.
  • the bearing can be designed as a rolling bearing. By supporting the turbine runner on the bearing, the bearing forces of the turbine runner need not be absorbed by the shafts of the generators, whereby the life of the turbine generator may be increased.
  • the inner ring may surround the outer contour of the turbine runner. The inner ring can lie in the axial plane of the turbine runner. Alternatively, the inner ring may be disposed at an axial distance from the turbine runner.
  • the turbine runner can also be arranged between two or more inner rings and / or bearings, in particular rolling bearings.
  • the turbine generator may include a support ring connecting the turbine runner to the ring of irons. Depending on the conditions of use and space, the support ring can be designed differently.
  • the support ring may be attached to a turbine ring connecting the radially outer ends of the blades of the turbine runner.
  • the turbine ring may in particular be manufactured in one piece with the blades or the turbine runner.
  • the turbine ring may have an inner circumferential wall, which is shaped streamlined in accordance with the flow.
  • the inner ring of the bearing can be connected, for example by means of a fit fit, in particular interference fit with the support ring.
  • the support ring can be connected by means of releasable fastening means with a flange of the turbine runner.
  • a releasable attachment can be done for example by means of screws.
  • the flange may be an annular flange, which may in particular extend radially away from the circumference of the turbine runner.
  • a drive sprocket may be connected to the support ring.
  • the drive sprocket may substantially extend on a diameter corresponding to the support ring.
  • the drive sprocket may be made separately or integrally with the support ring.
  • the teeth of the drive sprocket may extend radially outward and thus form a spur gear.
  • the teeth of the drive sprocket may extend in an axial direction, for example in the form of a bevel gear.
  • the transmission may have a meshing with the drive sprocket pinion, which by means of a shaft to the generator connected is.
  • the pinion need not necessarily sit directly on the output shaft of the generator, but can sit on a separate shaft which is coupled to the generator.
  • the tapered roller bearings may be formed in O arrangement and / or with a pressure angle of 45 °.
  • the support means may be a housing.
  • the housing may in particular have at least one mating surface for at least one seal.
  • the seal may in particular be rotatably mounted with respect to the housing and the turbine runner. By a rotatable mounting of the seal, the peripheral speed between the sealing lip of the seal and the turbine wheel can be reduced, in particular approximately halved.
  • the seal can be rotatably mounted between the housing and the turbine runner by means of at least three rollers, which are supported both against a first runway on the housing and a second runway on the turbine runner.
  • the seal can be stored aligned in its coaxial position with respect to turbine runner and housing.
  • the seal may have at least one radial shaft sealing ring, in particular with at least two radial shaft sealing lips, and / or a cartridge seal.
  • the seal may have at least one outwardly, in particular fluid-tight sealing radial shaft sealing lip, which rests against an inner peripheral side mating surface of the housing.
  • this may alternatively or additionally be provided with at least one radial shaft seal, which seals outwards, in particular against the flow. having lip which abuts an outer peripheral side mating surface of the turbine runner.
  • this may alternatively or additionally have at least one inwardly, in particular flow-facing sealing radial shaft sealing lip, which rests against an inner peripheral side mating surface of the housing.
  • this may alternatively or additionally have at least one inwardly, in particular flow-facing, sealing radial shaft sealing lip, which rests against an outer peripheral side mating surface of the turbine runner.
  • the gasket may have at least two radial shaft sealing lips which are outwardly directed, in particular facing away from the flow, and at least two radial shaft sealing lips which are inwardly facing, in particular facing the flow direction.
  • the invention thus provides a turbine generator, in particular a water turbine, which is more compact than known solutions and has a high efficiency and high performance even with a small size.
  • the rotor that is to say the turbine runner
  • the rotor can be fastened in a large bearing, for example a moment bearing, in particular of the "Nautilus” type or two angular contact ball bearings. Occurring radial and axial forces can be absorbed in this camp.
  • no turbine shaft is required. Instead, the torque can be transmitted to the generator via a transmission member attached to the rotating inner ring of the large-scale bearing, such as a toothing.
  • a transmission of the torque can be done for example via a small gear which is connected to the shaft of the generator or sitting on this shaft and picks up the torque.
  • a very high transmission ratio can be realized, which delivers a high speed at the generator.
  • the generator can generate a high electrical power even at low speeds of the turbine runner or at low flow velocities of the water flow.
  • radial shaft seals can be used.
  • the seals, in particular the radial shaft seals can be rotatably supported, i. the radial shaft seals not only move with respect to the turbine wheel, but also with respect to the housing.
  • the rotationally mounted seals according to the invention can reduce the circumferential speeds at the sealing edges. Especially with large diameters and the expected speeds, the rotationally mounted seals according to the invention also the wear can be kept within limits.
  • the seal according to the invention may have four radial shaft seals. Of the four radial shaft sealing rings, two may be arranged sealingly outwards and two sealingly inwards in each case.
  • the rotating seals can be supported by at least three rollers.
  • the rollers can be located between the rotor and the housing.
  • the rotatably mounted seals can form a sealing cassette together with the rollers.
  • the seal cassette may be driven by the turbine runner in which the rollers roll on the turbine runner and bear against the housing.
  • the peripheral speed of the seal cassette reduces the peripheral speeds at the sealing edges in a non-critical area.
  • the storage according to the invention makes it possible to seal the storage outside the water flow. This means that a normal lubrication of the bearing is possible, which can be selected independently of the flow medium. In addition, maintenance and, where appropriate, disassembly and / or replacement of components of the turbine generator can be carried out more easily. Since with the storage according to the invention due to the omission of a turbine shaft no bending moments must be recorded, but almost exclusively axial forces occur, simpler or smaller gear can be used. The installation position of the turbine generator is also completely variable.
  • FIG. 1 is a partial perspective sectional view of an embodiment of a turbine generator according to the invention
  • FIG. 2 is a cross-sectional view of the turbine generator of FIG. 1;
  • FIG. 3 is an enlarged partial sectional view of the turbine generator of FIG. 2 through a bearing according to the invention
  • Fig. 4 is an enlarged partial sectional view of Fig. 3 by a seal according to the invention.
  • the turbine generator 1 shown by way of example in FIG. 1 has a turbine runner 3 and an electric generator 5.
  • the turbine runner 3 has five blades 7.
  • the blades 7 extend in the radial direction, starting from a central node 9, which lies on a rotation axis 11 of the turbine generator 1, to the outside.
  • the outer ends of the blades 7 are connected to a turbine ring 13.
  • the turbine ring 13 is substantially formed as a pipe section, which may have on its inner wall 15 a sfluid to the flow, such as water, adapted contour.
  • the turbine generator 1 has a support means 17, which may also be referred to as a housing.
  • the support means 17 comprises in the illustrated embodiment, an annular housing 19 and then an inlet pipe piece 21 and an outlet pipe piece 23.
  • the support means 17 not only the Strömungsflu- id out, but also determines a mutual position of the turbine runner 3 and generator 5 to each other.
  • the turbine generator 1 For transmitting a torque, the turbine generator 1 has a transmission 25 shown in FIG. 2.
  • the transmission 25 transmits the torque delivered by the turbine runner 3 to a shaft 27 of the generator 5.
  • the shaft 27 of the generator 5 is connected to an output gear 29 for this purpose.
  • the output pinion 29 sits directly on the shaft 27.
  • the output pinion 29 meshes with a drive sprocket 31 which is connected to the turbine runner 3.
  • an inventive bearing 33 is shown in greater detail in an enlarged partial sectional view of the turbine generator 1 of FIG.
  • the bearing 33 is over a support ring 35 connected to the turbine runner 3.
  • the bearing 33 has in the illustrated embodiment, an inner ring 37 and an outer ring 39. Between the inner ring 37 and the outer ring 39 rolling elements 41 are arranged.
  • the outer ring 39 is connected to the support means 17.
  • the outer ring 39 is seated in a bearing seat 43 of the support means 17 and the annular housing 19, for example by means of a fit fit, in particular interference fit.
  • the bearing 33 may have two angular contact ball bearings or as shown in Fig. 3 may be formed as a double row tapered roller bearing.
  • the double row tapered roller bearing can have a pressure angle of 45 °. This gives the tapered roller bearing a large span and thus high rigidity.
  • Another advantage of the large pressure angle is the resulting small cone angle of the rolling elements 41. The smaller the cone angle, the lower the friction between the rolling elements 41 and a guide board of the tapered roller bearing.
  • the guide board can be designed tribologically low, so that can set an ideal lubricating film in Wälz Archives- guide board contact.
  • the Inneming 37 of the bearing 33 is connected by means of the support ring 35 with the turbine runner 3.
  • the Inneming 37 of the bearing 33 is connected by means of a fit fit, in particular interference fit with the support ring 35.
  • the inner ring 37 surrounds the outer contour of the turbine runner 3.
  • the inner ring 37 also surrounds a flow guided through the turbine runner 3.
  • the turbine runner 3 is arranged completely inside the inner ring 37 in the exemplary embodiment.
  • the Inneming 37 may for example be arranged axially offset with respect to the turbine runner 3 or it may, for example, two inner rings 37, in particular two bearings 33 in an axial distance from each other be provided, between which the turbine runner 3 is located in an intermediate axial position.
  • the support ring 35 is connected in the embodiment by means of releasable fastening means 45 with the turbine runner 3.
  • the releasable fastening means 45 can be formed in particular by screws.
  • the support ring 35 is, as shown in Fig. 3, connected to an annular flange 47 of the turbine runner 3. On the support ring 35, the drive sprocket 31 is also attached.
  • the turbine generator 1 has two seals 49a, 49b in the exemplary embodiment.
  • Each seal 49a, 49b may be formed in the manner of a cassette seal.
  • Each seal 49a, 49b may in particular be rotatably mounted both with respect to the support means 17 or the housing and with respect to the turbine runner 3.
  • FIG. 4 shows one of the two seals 49a according to the invention in an enlarged partial sectional view.
  • the seal 49a is formed in the illustrated embodiment as a radial shaft seal.
  • the seal 49a has a first radial shaft sealing lip 51a which projects outward, in particular against the flow, and bears against an inner circumferential mating surface 53 of the support means 17 or of the housing.
  • the seal 49a furthermore has, to the outside, in particular a flow-sealing manner, a second radial shaft sealing lip 51b, which rests against an outer circumferential mating surface 55 of the turbine runner 3.
  • the first radial shaft sealing lip 51a and the second radial shaft sealing lip 5lb may be at the same axial height, as shown. be considered radially superimposed.
  • the seal 49a also has a third radial shaft sealing lip 51c which is inwardly, in particular flow-tight, and bears against the inner peripheral side mating surface 53 of the support means 17 or the housing.
  • the seal 49a further has inwardly, in particular Strömungs Kome wall sealingly a fourth radial shaft sealing lip 51d, which on the outer peripheral side Mating surface 55 of the turbine runner 3 is applied.
  • the third radial shaft sealing lip 51c and the fourth radial shaft sealing lip 51d can, as shown, be at the same axial height, ie be arranged one above the other as viewed radially.
  • each of the seals 49a, 49b is in the embodiment according to the invention by means of at least three rollers 57, which are supported against both a first runway 59 on the support means 17 and the housing and supported against a second runway 61 on the turbine runner 3, rotatable between support means 17 and Housing and turbine runner 3 stored.
  • each of the seals 49a, 49b may additionally be axially supported axially by means of associated axial rollers 63, in particular against an axial roller track 65 on the support means 17 or on the housing.

Landscapes

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

Abstract

L'invention porte sur une génératrice à turbine (1), en particulier sur une génératrice à turbine hydraulique destinée à la production de courant à partir d'un flux d'eau, présentant un rotor de turbine (3), une génératrice électrique (5) et un moyen d'appui (17) par lequel une position mutuelle du rotor de turbine (3) et de la génératrice (5) est déterminée, ainsi qu'un mécanisme (25) destiné à transmettre un couple du rotor (3) de la turbine à un arbre (27) de la génératrice (5), et présentant en outre un palier (33) qui comprend une bague extérieure (39) reliée au moyen d'appui (17) et une bague intérieure (37) reliée au rotor (3) de la turbine, qui entoure un flux qui passe à travers le rotor (3) de la turbine.
PCT/EP2011/063584 2011-08-08 2011-08-08 Génératrice à turbine WO2013020578A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11743509.9A EP2742232A1 (fr) 2011-08-08 2011-08-08 Génératrice à turbine
PCT/EP2011/063584 WO2013020578A1 (fr) 2011-08-08 2011-08-08 Génératrice à turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/063584 WO2013020578A1 (fr) 2011-08-08 2011-08-08 Génératrice à turbine

Publications (1)

Publication Number Publication Date
WO2013020578A1 true WO2013020578A1 (fr) 2013-02-14

Family

ID=44630256

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/063584 WO2013020578A1 (fr) 2011-08-08 2011-08-08 Génératrice à turbine

Country Status (2)

Country Link
EP (1) EP2742232A1 (fr)
WO (1) WO2013020578A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074666A (zh) * 2014-06-30 2014-10-01 梁荫健 一种水动机
CN108590916A (zh) * 2018-04-27 2018-09-28 佛山市瑞生海特生物科技有限公司 一种用于水利水坝的能源利用装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4163904A (en) * 1976-03-04 1979-08-07 Lawrence Skendrovic Understream turbine plant
DE3542096A1 (de) * 1985-11-28 1987-10-29 Roland Frey Generatoranlage
FR2795140A1 (fr) 1999-06-17 2000-12-22 Herve Majastre Dispositif, ensemble et installation pour la production d'energie hydroelectrique
WO2002057624A1 (fr) * 2001-01-19 2002-07-25 Aloys Wobben Eolienne pourvue d'un arbre creux pour le moyeu de rotor et le generateur
US7218011B2 (en) 2003-04-16 2007-05-15 Composite Support & Solutions, Inc. Diffuser-augmented wind turbine
EP1885047A1 (fr) 2006-07-31 2008-02-06 C.R.F. Societa' Consortile per Azioni Générateur électrique commandé par un debit de fluide
US20090115193A1 (en) 2007-06-25 2009-05-07 Branco Anthony J Water turbine for generating electricity
EP2172665A1 (fr) * 2008-07-17 2010-04-07 Mitsubishi Heavy Industries, Ltd. Structure de palier et générateur d'énergie éolien
DE102010018555A1 (de) * 2010-04-28 2011-11-03 Aktiebolaget Skf Turbinengenerator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4163904A (en) * 1976-03-04 1979-08-07 Lawrence Skendrovic Understream turbine plant
DE3542096A1 (de) * 1985-11-28 1987-10-29 Roland Frey Generatoranlage
FR2795140A1 (fr) 1999-06-17 2000-12-22 Herve Majastre Dispositif, ensemble et installation pour la production d'energie hydroelectrique
WO2002057624A1 (fr) * 2001-01-19 2002-07-25 Aloys Wobben Eolienne pourvue d'un arbre creux pour le moyeu de rotor et le generateur
US7218011B2 (en) 2003-04-16 2007-05-15 Composite Support & Solutions, Inc. Diffuser-augmented wind turbine
EP1885047A1 (fr) 2006-07-31 2008-02-06 C.R.F. Societa' Consortile per Azioni Générateur électrique commandé par un debit de fluide
US20090115193A1 (en) 2007-06-25 2009-05-07 Branco Anthony J Water turbine for generating electricity
EP2172665A1 (fr) * 2008-07-17 2010-04-07 Mitsubishi Heavy Industries, Ltd. Structure de palier et générateur d'énergie éolien
DE102010018555A1 (de) * 2010-04-28 2011-11-03 Aktiebolaget Skf Turbinengenerator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074666A (zh) * 2014-06-30 2014-10-01 梁荫健 一种水动机
CN108590916A (zh) * 2018-04-27 2018-09-28 佛山市瑞生海特生物科技有限公司 一种用于水利水坝的能源利用装置

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