EP2089631A1 - Machine hydraulique ayant un carter en volute de forme spéciale - Google Patents

Machine hydraulique ayant un carter en volute de forme spéciale

Info

Publication number
EP2089631A1
EP2089631A1 EP07801760A EP07801760A EP2089631A1 EP 2089631 A1 EP2089631 A1 EP 2089631A1 EP 07801760 A EP07801760 A EP 07801760A EP 07801760 A EP07801760 A EP 07801760A EP 2089631 A1 EP2089631 A1 EP 2089631A1
Authority
EP
European Patent Office
Prior art keywords
spiral housing
impeller
hydraulic machine
ring
traverse
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.)
Withdrawn
Application number
EP07801760A
Other languages
German (de)
English (en)
Inventor
Bodo Quaschnowitz
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.)
Voith Hydro Holding GmbH and Co KG
Original Assignee
Voith Hydro Holding GmbH and Co KG
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 Voith Hydro Holding GmbH and Co KG filed Critical Voith Hydro Holding GmbH and Co KG
Publication of EP2089631A1 publication Critical patent/EP2089631A1/fr
Withdrawn legal-status Critical Current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
    • F03B3/16—Stators
    • F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
    • F03B3/186—Spiral or volute casings
    • 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
    • F05B2230/00—Manufacture
    • F05B2230/20—Manufacture essentially without removing material
    • F05B2230/23—Manufacture essentially without removing material by permanently joining parts together
    • 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
    • F05B2230/00—Manufacture
    • F05B2230/20—Manufacture essentially without removing material
    • F05B2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F05B2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to a hydraulic machine, in particular a water turbine, pump turbine or pump, according to the preamble of claim 1.
  • a hydraulic machine in particular a water turbine, pump turbine or pump, according to the preamble of claim 1.
  • These may be machines of the Francis type or the Kaplan type or other machines. It is essential that it is about machines with a spiral housing.
  • the spiral housing of such a machine encloses the impeller. It lies in a plane perpendicular to the axis of rotation of the impeller. Since the impeller axis is generally vertical, it is a horizontal plane.
  • the spiral housing is open on its inside against the impeller. It thus has a slot which runs around the inner circumference of the spiral housing, so that medium can flow from the spiral housing through the slot on the entire inner circumference to the impeller.
  • the slot is thus defined by two circumferential edges.
  • a truss ring At the said slot closes in the flow direction, a truss ring.
  • This comprises two Traversenringdecks, which are arranged concentrically to the axis of rotation of the impeller and have a mutual distance in the axial direction.
  • the decks are connected by tie rods, so-called traverses.
  • each of the said peripheral edges of the spiral housing with one of the two Traversenringdecks is firmly connected.
  • the truss ring serves to prevent expansion of the volute casing under the high internal pressure.
  • connection durable and reliable, with the least possible use of materials.
  • connection is a welded connection between the respective circumferential edge of the spiral housing and the associated cross-beam deck.
  • the preparation of this compound has proven to be costly.
  • the invention has for its object to design a hydraulic machine of the type mentioned, which has a spiral housing and a truss ring, such that the connection between the peripheral edges of the slot of the spiral housing and the associated Traversenringdecks is even safer than in known machines ,
  • the areas of the peripheral edges of the spiral housing - seen in an axial section - are designed so that they are approximately parallel to the axis of rotation of the impeller. A slight deviation from parallelism is allowed. However, it should not be more than 11 degrees. Even a small deviation of 1, 2, 3, 4, 5, 6 degrees may be appropriate by senses that the peripheral edge is slightly opposite to the axis of rotation of the impeller. In practice, you will move between 5 and 11 degrees.
  • the spiral housing is usually composed of segments. Seen in an axial section, the segments have approximately circular shape, of course, except for the edge regions. Outside the edge areas, the Segments but also have a shape deviating from the circular shape, as can be seen from the figures.
  • the respective edge region of the spiral housing is shaped such that a tangential surface to the spiral housing through the edge is almost parallel to the turbine axis.
  • the cross section of the spiral housing deviates from the circular shape that it normally has, at least in the connection area.
  • FIG. 1 shows the essential components of a conventional Francis turbine in a meridian section.
  • FIG. 2 again shows, in a meridian section, a spiral housing with the two traverse ring decks of a cross-member ring according to a first embodiment of the invention.
  • FIG. 3 again shows, in a meridian section, a volute casing with the two traverse ring decks of a truss ring according to a second embodiment of the invention.
  • FIG. 4 shows in a three-dimensional representation the first embodiment of the invention
  • the Francis turbine shown in Figure 1 has an impeller 1. This comprises a plurality of blades 1.1.
  • the impeller 1 passes around a rotation axis 2.
  • the impeller 1 is enclosed by a spiral housing 3.
  • the spiral casing 3 is, for example, of circular cross section. It has a circumferential slot-shaped opening against the impeller 1 out.
  • the opening slot is limited by circumferential edges 3.1, 3.2.
  • a truss ring 4 connects at the circumferential, formed from the edges 3.1, 3.2 slot. This has two traverse ring decks 4.1 and 4.2. A Traverse 4.3 serves as a tie rod.
  • the areas of the peripheral edges 3.1, 3.2 of the spiral housing are welded to the cross-ribbed decks 4.1, 4.2.
  • a suction pipe 6 is connected, which has a plurality of sections.
  • the spiral housing is of circular cross-section.
  • the areas of the peripheral edges are inclined at the connection points to the two truss ring decks 4.1, 4.2 against the vertical. This means that the edge regions of the spiral housing do not run parallel to the axis of rotation 2 of the impeller 1. See in Figure 1 angle ⁇ . This is approximately 15 to 40 degrees.
  • Figures 2 and 3 illustrate two different embodiments of the invention. Moreover, the associated hydraulic machines can be constructed the same as the machine shown in Figure 1.
  • Edge regions of the spiral housing 3 are deformed relative to the circular shape. They run virtually parallel to the axis of rotation 2 according to FIG. 1.
  • the fastening is produced by means of weld seams 7.
  • the truss rings 4.1, 4.2 are again of conventional shape and arrangement.
  • the edge regions 3.1, 3.2 are in turn perpendicular to the traverse ring decks 4.1, 4.2 and extend according to parallel to the axis of rotation 2 of the impeller 1.
  • the remaining cross-section of the spiral housing 3 is approximately elliptical.
  • FIG. 2 From the point of view of the uniformity of the stress distribution, the embodiment according to FIG. 2 is to be preferred to FIG. 3.
  • the third embodiment of the invention shown in FIG. 4 again has quasi-conventional traverse ring decks 4.1, 4.2.
  • the cross-section of the volute does not form a single circle but is three
  • Composed circular arc namely a first circular arc 3.3 and a second and a third circular arc 3.4, 3.5.
  • the first circular arc 3.3 has a relatively large radius R1
  • the other two circular arcs 3.4, 3.5 each have a relatively small circular arc R2.
  • connection points between the spiral housing 3 - here the two circular arc 3.4, 3.5 on the one hand, and the Traversenringdecks 4.1, 4.2 on the other hand - are each formed almost at right angles.
  • the tie rod 4.3 continues in the same direction as the two edge regions of the peripheral edges 3.1, 3.2 of the spiral housing 3.
  • the lines of tensile stresses in the tie rod 4.3 and in the edge regions of the circular arc 3.4, 3.5 are thus aligned with each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une machine hydraulique ayant les caractéristiques suivantes : une roue mobile présentant une pluralité de pales; un carter en volute qui entoure la roue mobile et est ouvert en direction de celle-ci par une fente périphérique formée par deux arêtes périphériques; un anneau de traverses, comportant deux couvercles d'anneau de traverses qui sont reliés l'un à l'autre par des tirants; le carter en volute est raccordé dans la région des arêtes périphériques à des surfaces de raccordement des couvercles d'anneau de traverses. Selon l'invention, les régions des arêtes périphériques sont formées et/ou disposées de sorte que celles-ci s'étendent toutes deux parallèlement à l'axe de rotation de la roue mobile ou forment avec celle-ci un angle alpha d'au plus 11 degrés.
EP07801760A 2006-10-25 2007-08-18 Machine hydraulique ayant un carter en volute de forme spéciale Withdrawn EP2089631A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006050203A DE102006050203A1 (de) 2006-10-25 2006-10-25 Hydraulische Maschine
PCT/EP2007/007320 WO2008049479A1 (fr) 2006-10-25 2007-08-18 Machine hydraulique ayant un carter en volute de forme spéciale

Publications (1)

Publication Number Publication Date
EP2089631A1 true EP2089631A1 (fr) 2009-08-19

Family

ID=38722678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07801760A Withdrawn EP2089631A1 (fr) 2006-10-25 2007-08-18 Machine hydraulique ayant un carter en volute de forme spéciale

Country Status (9)

Country Link
EP (1) EP2089631A1 (fr)
CN (1) CN101548095B (fr)
BR (1) BRPI0718132A2 (fr)
CA (1) CA2667497C (fr)
CO (1) CO6180471A2 (fr)
DE (1) DE102006050203A1 (fr)
MX (1) MX2009004315A (fr)
RU (1) RU2450157C2 (fr)
WO (1) WO2008049479A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011113442A1 (de) * 2011-09-14 2013-03-14 Voith Patent Gmbh Hydraulische Maschine mit oben liegendem Saugkrümmer
DE102011116277A1 (de) * 2011-10-19 2013-04-25 Voith Patent Gmbh Hydraulische Maschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU33468A1 (ru) * 1932-11-23 1933-11-30 В.А. Тиме Многоступенчата вод на турбина с последовательным подводом воды к рабочим колесам
US2656096A (en) * 1946-01-04 1953-10-20 Rateau Soc Centrifugal pump and compressor
DE1285960B (de) * 1962-05-22 1968-12-19 Voith Gmbh J M Zulaufeinrichtung fuer Kaplan- und Francisturbinen
GB1244727A (en) * 1967-12-08 1971-09-02 Cav Ltd Liquid fuel injection pumping apparatus
DE1703041B1 (de) * 1968-03-25 1971-12-23 Voith Gmbh J M Spiralgehaeuse fuer stroemungsmaschinen
JPS52104641A (en) * 1977-03-14 1977-09-02 Hitachi Ltd Speed ring in hydraulic machinery
JPS55142973A (en) * 1979-04-25 1980-11-07 Hitachi Ltd Stay ring of water wheel
DE3428473C1 (de) * 1984-08-02 1985-12-19 J.M. Voith Gmbh, 7920 Heidenheim Strömungsmaschine, wie Wasserturbine, Pumpe oder Pumpenturbine, mit einem Spiralgehäuse
JP2000145608A (ja) * 1998-11-06 2000-05-26 Toshiba Corp 水力機械
AT412008B (de) * 2002-05-16 2004-08-26 Va Tech Hydro Gmbh & Co Spirale einer strömungsmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008049479A1 *

Also Published As

Publication number Publication date
CA2667497A1 (fr) 2008-05-02
MX2009004315A (es) 2009-07-16
BRPI0718132A2 (pt) 2013-11-05
CO6180471A2 (es) 2010-07-19
RU2009119455A (ru) 2010-11-27
CA2667497C (fr) 2016-05-03
CN101548095A (zh) 2009-09-30
WO2008049479A1 (fr) 2008-05-02
RU2450157C2 (ru) 2012-05-10
DE102006050203A1 (de) 2008-04-30
CN101548095B (zh) 2013-07-17

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