WO2008049479A1 - Hydraulic machine having a specially shaped spiral housing - Google Patents

Hydraulic machine having a specially shaped spiral housing Download PDF

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Publication number
WO2008049479A1
WO2008049479A1 PCT/EP2007/007320 EP2007007320W WO2008049479A1 WO 2008049479 A1 WO2008049479 A1 WO 2008049479A1 EP 2007007320 W EP2007007320 W EP 2007007320W WO 2008049479 A1 WO2008049479 A1 WO 2008049479A1
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WO
WIPO (PCT)
Prior art keywords
spiral housing
impeller
hydraulic machine
ring
traverse
Prior art date
Application number
PCT/EP2007/007320
Other languages
German (de)
French (fr)
Inventor
Bodo Quaschnowitz
Original Assignee
Voith Hydro Holding Gmbh & 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 & Co. Kg filed Critical Voith Hydro Holding Gmbh & Co. Kg
Priority to MX2009004315A priority Critical patent/MX2009004315A/en
Priority to CA2667497A priority patent/CA2667497C/en
Priority to BRPI0718132-9A2A priority patent/BRPI0718132A2/en
Priority to CN2007800398604A priority patent/CN101548095B/en
Priority to EP07801760A priority patent/EP2089631A1/en
Publication of WO2008049479A1 publication Critical patent/WO2008049479A1/en

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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.

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  • 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

A hydraulic machine having the following features is disclosed: - an impeller having a plurality of blades; - a spiral housing surrounding the impeller, and open toward the same by means of a circumferential slot, formed by two circumferential edges; - a traverse ring comprising two traverse ring shrouds, which are connected to each other by means of tie rods; - the spiral housing being connected to connecting surfaces of the traverse ring shrouds in the region of the circumferential edges. The hydraulic machine is characterized by the following features: - the regions of the circumferential edges are configured and/or disposed such that both extend parallel to the axis of rotation of the impeller, or form an angle alpha of no more than 11 degrees with the same.

Description

Hydraulische Maschine Hydraulic machine
Die Erfindung betrifft eine hydraulische Maschine, insbesondere eine Wasserturbine, Pumpturbine oder Pumpe, gemäß dem Oberbegriff von Anspruch 1. Dabei kann es sich um Maschinen der Francis-Bauart oder der Kaplan-Bauart oder um sonstige Maschinen handeln. Wesentlich ist, dass es um Maschinen mit einem Spiralgehäuse geht.The invention relates to 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.
Als Beispiel wird auf US-A-4 496 282 oder auf DE 199 50 228 A1 verwiesen.As an example reference is made to US-A-4 496 282 or to DE 199 50 228 A1.
Das Spiralgehäuse einer solchen Maschine umschließt das Laufrad. Es liegt in einer zur Drehachse des Laufrades senkrechten Ebene. Da die Laufradachse im allgemeinen vertikal verläuft, handelt es sich dabei um eine horizontale Ebene.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.
Das Spiralgehäuse ist auf seiner Innenseite gegen das Laufrad hin offen. Es weist somit einen Schlitz auf, der um den inneren Umfang des Spiralgehäuses herumläuft, so dass Medium aus dem Spiralgehäuse durch den Schlitz auf dem gesamten inneren Umfang zum Laufrad strömen kann. Der Schlitz ist somit durch zwei umlaufende Kanten definiert.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.
An den genannten Schlitz schließt sich in Strömungsrichtung gesehen ein Traversenring an. Diese umfasst zwei Traversenringdecks, die zur Drehachse des Laufrades konzentrisch angeordnet sind und einen gegenseitigen Abstand in axialer Richtung haben. Die Decks sind durch Zuganker miteinander verbunden, sogenannte Traversen. Außerdem ist jede der genannten umlaufenden Kanten des Spiralgehäuses mit einem der beiden Traversenringdecks fest verbunden.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. In addition, each of the said peripheral edges of the spiral housing with one of the two Traversenringdecks is firmly connected.
Der Traversenring dient dazu, ein Aufweiten des Spiralgehäuses unter dem hohen Innendruck zu verhindern.The truss ring serves to prevent expansion of the volute casing under the high internal pressure.
Es wirken somit Kräfte auf die genannten Zuganker ein, ferner auf die Verbindungsstelle zwischen dem betreffenden Traversenringdeck und der zugehörenden umlaufenden Kante des Spiralgehäuses. Die Verbindung muss absolut zuverlässig ausgeführt sein und hohen Kräften Stand halten. Dabei ist zu berücksichtigen, dass im Spiralgehäuse auch Druckschwankungen oder Druckschwingungen auftreten können.Thus, forces act on the said tie rods, also on the connection point between the respective cross-beam deck and the belonging peripheral edge of the spiral housing. The connection must be absolutely reliable and withstand high forces. It should be noted that in the volute casing also pressure fluctuations or pressure oscillations can occur.
Es wurden erhebliche Anstrengungen unternommen, die Verbindung dauerhaft und zuverlässig zu gestalten, bei geringstmöglichem Materialeinsatz. Im allgemeinen handelt es sich um eine Schweißverbindung zwischen der betreffenden umlaufenden Kante des Spiralgehäuses und dem zugehörenden Traversenringdeck. Die Herstellung dieser Verbindung hat sich als aufwändig erwiesen.Considerable efforts have been made to make the connection durable and reliable, with the least possible use of materials. In general, it 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.
Der Erfindung liegt die Aufgabe zugrunde, eine hydraulische Maschine der eingangs genannten Art, die ein Spiralgehäuse und einen Traversenring aufweist, derart zu gestalten, dass die Verbindung zwischen den umlaufenden Kanten des Schlitzes des Spiralgehäuses und den zugehörenden Traversenringdecks noch sicherer ist, als bei bekannten Maschinen.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 ,
Diese Aufgabe wird durch die Merkmale von Anspruch 1 gelöst.This object is solved by the features of claim 1.
Demgemäß werden die Bereiche der umlaufenden Kanten des Spiralgehäuses - in einem Axialschnitt gesehen - derart gestaltet, dass sie annähernd parallel zur Drehachse des Laufrades verlaufen. Eine geringfügige Abweichung von der Parallelität ist zulässig. Sie sollte jedoch nicht mehr als 11 Grad betragen. Bereits eine kleine Abweichung von 1 , 2, 3, 4, 5, 6 Grad kann zweckmäßig sein, indem Sinne, dass die umlaufende Kante geringfügig gegen die Drehachse des Laufrades hinweist. In der Praxis wird man sich zwischen 5 und 11 Grad bewegen.Accordingly, 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.
Das Spiralgehäuse ist üblicherweise aus Segmenten zusammengesetzt. In einem Axialschnitt gesehen haben die Segmente annähernd Kreisform, natürlich abgesehen von den Kantenbereichen. Außerhalb der Kantenbereiche können die Segmente aber auch eine von der Kreisform abweichende Gestalt haben, wie sich aus den Figuren ergibt.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.
Durch die Erfindung ergeben sich die folgenden Vorteile:The invention provides the following advantages:
Die Spannungen in dem gesamten Spiralgehäuse sind weitgehend gleichförmig. Die auf die Traversen ausgeübten Kräfte und Momente erreichen ein Minimum. Im Bereich der Anschlussstelle zwischen den Kanten des Spiralgehäuses und den Traversenringen treten geringere Biegespannungen auf.The stresses in the entire volute are substantially uniform. The forces and moments exerted on the trusses reach a minimum. In the area of the connection point between the edges of the spiral housing and the truss rings occur lower bending stresses.
Aufgrund der gleichmäßigen Spannungsverteilung können alle beteiligten Bauteile optimal ausgelegt werden. Dies führt zu einer Minimierung der Wandstärke des Spiralgehäuses und der Querschnitte der Traversen.Due to the even stress distribution, all involved components can be optimally designed. This leads to a minimization of the wall thickness of the spiral housing and the cross sections of the trusses.
Dies lässt sich wie folgt erreichen:This can be achieved as follows:
Der betreffende Kantenbereich des Spiralgehäuses wird derart geformt, dass eine Tangentialfläche zum Spiralgehäuse durch die Kante nahezu parallel zur Turbinenachse steht. In diesem Falle weicht der Querschnitt des Spiralgehäuses von der Kreisform ab, die er normalerweise hat, jedenfalls im Anschlussbereich.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. In this case, the cross section of the spiral housing deviates from the circular shape that it normally has, at least in the connection area.
Die günstige Wirkung erklärt sich aus folgendem: Hierbei treten geringere radial nach außen beziehungsweise innen wirkende Kraftkomponenten der Zugkraft auf, die auf die Wandung des Spiralgehäuses einwirken.The favorable effect is explained by the following: In this case occur lower radially outwardly or inwardly acting force components of the tensile force, which act on the wall of the spiral housing.
Der Stand der Technik sowie die Erfindung sind anhand der Zeichnung näher erläutert. Darin ist im einzelnen folgendes dargestellt:The prior art and the invention are explained in more detail with reference to the drawing. The following is shown in detail:
Figur 1 zeigt die wesentlichen Bauteile einer konventionellen Francis-Turbine in einem Meridianschnitt. Figur 2 zeigt wiederum in einem Meridianschnitt ein Spiralgehäuse mit den beiden Traversenringdecks eines Traversenrings gemäß einer ersten Ausführungsform der Erfindung.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.
Figur 3 zeigt wiederum in einem Meridianschnitt ein Spiralgehäuse mit den beiden Traversenringdecks eines Traversenrings gemäß einer zweiten Ausführungsform der Erfindung.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.
Figur 4 zeigt in einer dreidimensionalen Darstellung die erste Ausführungsform der ErfindungFIG. 4 shows in a three-dimensional representation the first embodiment of the invention
Die in Figur 1 dargestellte Francis-Turbine weist ein Laufrad 1 auf. Dieses umfasst eine Vielzahl von Schaufeln 1.1. Das Laufrad 1 läuft um eine Drehachse 2.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.
Das Laufrad 1 ist von einem Spiralgehäuse 3 umschlossen. Das Spiralgehäuse 3 ist zum Beispiel von kreisförmigem Querschnitt. Es hat eine umlaufende schlitzförmige Öffnung gegen das Laufrad 1 hin. Der Öffnungsschlitz ist begrenzt durch umlaufende Kanten 3.1 , 3.2.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.
An den umlaufenden, aus den Kanten 3.1 , 3.2 gebildeten Schlitz schließt sich ein Traversenring 4 an. Dieser weist zwei Traversenringdecks 4.1 und 4.2 auf. Eine Traverse 4.3 dient als Zuganker.At the circumferential, formed from the edges 3.1, 3.2 slot a truss ring 4 connects. This has two traverse ring decks 4.1 and 4.2. A Traverse 4.3 serves as a tie rod.
Die Bereiche der umlaufenden Kanten 3.1 , 3.2 des Spiralgehäuses sind mit den Traversenringdecks 4.1 , 4.2 verschweißt.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.
Zwischen Traversenring und Laufrad ist ein Leitapparat mit Leitschaufel 5 vorgesehen.Between traverse ring and impeller a nozzle with vane 5 is provided.
An das Laufrad 1 ist in Strömungsrichtung gesehen ein Saugrohr 6 angeschlossen, das mehrere Abschnitte aufweist. Wie man sieht, ist das Spiralgehäuse von kreisförmigem Querschnitt. Die Bereiche der umlaufenden Kanten sind an den Anschlussstellen zu den beiden Traversenringdecks 4.1 , 4.2 gegen die Vertikale geneigt. Dies bedeutet, dass die Kantenbereiche des Spiralgehäuses nicht parallel zur Drehachse 2 des Laufrades 1 verlaufen. Siehe in Figur 1 Winkel α. Dieser liegt bei annähernd 15 bis 40 Grad.To the impeller 1 is seen in the flow direction, a suction pipe 6 is connected, which has a plurality of sections. As you can see, 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 α. This is approximately 15 to 40 degrees.
Die Figuren 2 und 3 veranschaulichen zwei verschiedene Ausführungsformen der Erfindung. Im übrigen können die zugehörenden hydraulischen Maschinen gleich aufgebaut sein, wie die in Figur 1 dargestellte Maschine.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.
Den beiden Ausführungsformen gemäß Figur 2 und 3 ist gemeinsam, dass die Spiralgehäuse im Bereich der umlaufenden Kanten 3.1 , 3.2 fast senkrecht auf den Anschlussflächen der zugehörenden Traversenringdecks 4.1 , 4.2 stehen.The two embodiments according to Figures 2 and 3 have in common that the spiral housing in the region of the peripheral edges 3.1, 3.2 are almost perpendicular to the connection surfaces of the associated Traversing ring decks 4.1, 4.2.
Bei der Ausführungsform gemäß Figur 2 wird dies dadurch erreicht, dass dieIn the embodiment according to FIG. 2, this is achieved in that the
Kantenbereiche des Spiralgehäuses 3 gegenüber der Kreisform verformt sind. Sie verlaufen praktisch parallel zur Drehachse 2 gemäß Figur 1. Die Befestigung ist mittels Schweißnähten 7 hergestellt.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.
Bei der zweiten Ausführungsform gemäß Figur 3 sind die Traversenringe 4.1 , 4.2 wiederum von konventioneller Gestalt und Anordnung. Die Kantenbereiche 3.1 , 3.2 stehen wiederum senkrecht auf den Traversenringdecks 4.1 , 4.2 und verlaufen dem gemäß parallel zur Drehachse 2 des Laufrades 1. Der übrige Querschnitt des Spiralgehäuses 3 ist annähernd elliptisch.In the second embodiment according to Figure 3, 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.
Unter dem Gesichtspunkt der Gleichmäßigkeit der Spannungsverteilung ist die Ausführung gemäß Figur 2 gegenüber Figur 3 zu bevorzugen. Die in Figur 4 dargestellte dritte Ausführungsform der Erfindung weist wiederum quasi konventionelle Traversenringdecks 4.1 , 4.2 auf. Der Querschnitt des Spiralgehäuses bildet jedoch nicht einen einzigen Kreis, sondern ist aus dreiFrom 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. However, the cross-section of the volute does not form a single circle but is three
Kreisbogen zusammengesetzt, nämlich einem ersten Kreisbogen 3.3 sowie aus einem zweiten und einem dritten Kreisbogen 3.4, 3.5. Der erste Kreisbogen 3.3 weist einen relativ großen Radius R1 auf, während die beiden anderen Kreisbogen 3.4, 3.5 jeweils einen relativ kleinen Kreisbogen R2 aufweisen.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, while the other two circular arcs 3.4, 3.5 each have a relatively small circular arc R2.
Die Anschlussstellen zwischen dem Spiralgehäuse 3 - hier den beiden Kreisbogen 3.4, 3.5 einerseits, und den Traversenringdecks 4.1 , 4.2 andererseits - sind jeweils nahezu rechtwinklig gebildet.The 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.
Der Zuganker 4.3 verläuft in derselben Richtung weiter, wie die beiden Kantenbereiche der umlaufenden Kanten 3.1 , 3.2 des Spiralgehäuses 3. Die Linien der Zugspannungen im Zuganker 4.3 und in den Kantenbereichen der Kreisbogen 3.4, 3.5 fluchten somit miteinander. 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.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Laufrad1 impeller
1.1 Schaufeln 2 Drehachse1.1 blades 2 rotation axis
3 Spiralgehäuse3 volute casing
3.1 umlaufende Kante des Spiralgehäuses3.1 circumferential edge of the spiral housing
3.2 umlaufende Kante des Spiralgehäuses3.2 circumferential edge of the spiral housing
3.3 erster Kreisbogen größeren Durchmessers 3.4 zweiter Kreisbogen kleineren Durchmessers3.3 first circular arc of larger diameter 3.4 second circular arc of smaller diameter
3.5 dritter Kreisbogen kleineren Durchmessers3.5 third arc of smaller diameter
4 Traversenring4 truss ring
4.1 Traversenringdeck4.1 Traverse ring deck
4.2 Traversenringdeck 4.3 Traverse4.2 Traverse ring deck 4.3 Traverse
5 Leitschaufel5 vane
6 Saugrohr6 intake manifold
7 Schweißnähte 7 welds

Claims

Patentansprüche1. Hydraulische Maschine Patentansprüche1. Hydraulic machine
1.1 mit einem Laufrad (1 ), das eine Vielzahl von Schaufeln (1.1) aufweist; 1.2 mit einem Spiralgehäuse (3), das das Laufrad (1) umschließt und gegen dieses hin durch einen umlaufenden Schlitz offen ist, gebildet aus zwei umlaufenden Kanten (3.1 , 3.2); 1.3 mit einem Traversenring (4), umfassend zwei Traversenringdecks (4.1 , 4.2), die durch Zuganker (4.3) miteinander verbunden sind; 1.4 das Spiralgehäuse (3) ist im Bereich der umlaufenden Kanten (3.1 , 3.2) an die Traversenringdecks (4.1 , 4.2) angeschlossen; gekennzeichnet durch die folgenden Merkmale: 1.5 die Bereiche der umlaufenden Kanten sind derart gestaltet und/oder angeordnet, dass diese beiden zur Drehachse (2) des Laufrades (1) parallel verlaufen oder mit dieser einen Winkel α von maximal 11 Grad bilden.1.1 with an impeller (1) having a plurality of blades (1.1); 1.2 with a spiral housing (3), which surrounds the impeller (1) and is open towards this by a circumferential slot, formed of two peripheral edges (3.1, 3.2); 1.3 with a truss ring (4), comprising two truss ring decks (4.1, 4.2) which are interconnected by tie rods (4.3); 1.4 the volute casing (3) is connected in the area of the peripheral edges (3.1, 3.2) to the traverse ring decks (4.1, 4.2); characterized by the following features: 1.5 the areas of the peripheral edges are designed and / or arranged so that these two parallel to the axis of rotation (2) of the impeller (1) or form with this an angle α of at most 11 degrees.
2. Hydraulische Maschine nach Anspruch 1 , dadurch gekennzeichnet, dass das Spiralgehäuse (3) in einem Meridianschnitt gesehen aus Kreisbogen unterschiedlicher Durchmesser aufgebaut ist.2. Hydraulic machine according to claim 1, characterized in that the spiral housing (3) seen in a meridian section of circular arc of different diameters is constructed.
3. Hydraulische Maschine nach Anspruch 2, dadurch gekennzeichnet, dass das Spiralgehäuse aufgebaut ist aus zwei Kreisbogen (3.4, 3.5), die den Traversenringdecks (4.1 , 4.2) näher liegen und die kleinere Durchmesser aufweisen, und einem weiteren Kreisbogen (3.3), der den Traversenringdecks (4.1 , 3. A hydraulic machine according to claim 2, characterized in that the spiral housing is constructed of two circular arc (3.4, 3.5), which are closer to the traverse ring decks (4.1, 4.2) and have the smaller diameter, and another arc (3.3), the the traverse ring decks (4.1,
4.2) ferner liegt und einen größeren Radius aufweist. 4.2) is further and has a larger radius.
PCT/EP2007/007320 2006-10-25 2007-08-18 Hydraulic machine having a specially shaped spiral housing WO2008049479A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
MX2009004315A MX2009004315A (en) 2006-10-25 2007-08-18 Hydraulic machine having a specially shaped spiral housing.
CA2667497A CA2667497C (en) 2006-10-25 2007-08-18 Hydraulic machine
BRPI0718132-9A2A BRPI0718132A2 (en) 2006-10-25 2007-08-18 HYDRAULIC MACHINE WITH A SPECIFICALLY FORMED SPIRAL BOX
CN2007800398604A CN101548095B (en) 2006-10-25 2007-08-18 Hydraulic machine having a specially shaped spiral housing
EP07801760A EP2089631A1 (en) 2006-10-25 2007-08-18 Hydraulic machine having a specially shaped spiral housing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006050203.5 2006-10-25
DE102006050203A DE102006050203A1 (en) 2006-10-25 2006-10-25 Hydraulic machine, particularly water turbine, pumping turbine or pump, has impeller with multiple blades, spiral housing surrounding impeller and traverse ring

Publications (1)

Publication Number Publication Date
WO2008049479A1 true WO2008049479A1 (en) 2008-05-02

Family

ID=38722678

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/007320 WO2008049479A1 (en) 2006-10-25 2007-08-18 Hydraulic machine having a specially shaped spiral housing

Country Status (9)

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

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US20140186186A1 (en) * 2011-10-19 2014-07-03 Voith Patent Gmbh Hydraulic Machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011113442A1 (en) * 2011-09-14 2013-03-14 Voith Patent Gmbh Hydraulic machine with top suction manifold

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DE1285960B (en) * 1962-05-22 1968-12-19 Voith Gmbh J M Inlet device for Kaplan and Francis turbines
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
JP2000145608A (en) * 1998-11-06 2000-05-26 Toshiba Corp Hydraulic machine
WO2003098032A2 (en) * 2002-05-16 2003-11-27 Va Tech Hydro Gmbh & Co Spiral pertaining to a turbo-machine

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US2656096A (en) * 1946-01-04 1953-10-20 Rateau Soc Centrifugal pump and compressor
GB1244727A (en) * 1967-12-08 1971-09-02 Cav Ltd Liquid fuel injection pumping apparatus
DE1703041B1 (en) * 1968-03-25 1971-12-23 Voith Gmbh J M SPIRAL HOUSING FOR FLOW MACHINES
DE3428473C1 (en) * 1984-08-02 1985-12-19 J.M. Voith Gmbh, 7920 Heidenheim Turbo engine, such as water turbine, pump or pump turbine, with a spiral housing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1285960B (en) * 1962-05-22 1968-12-19 Voith Gmbh J M Inlet device for Kaplan and Francis turbines
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
JP2000145608A (en) * 1998-11-06 2000-05-26 Toshiba Corp Hydraulic machine
WO2003098032A2 (en) * 2002-05-16 2003-11-27 Va Tech Hydro Gmbh & Co Spiral pertaining to a turbo-machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140186186A1 (en) * 2011-10-19 2014-07-03 Voith Patent Gmbh Hydraulic Machine
US9617968B2 (en) * 2011-10-19 2017-04-11 Voith Patent Gmbh Hydraulic machine

Also Published As

Publication number Publication date
CA2667497A1 (en) 2008-05-02
MX2009004315A (en) 2009-07-16
BRPI0718132A2 (en) 2013-11-05
EP2089631A1 (en) 2009-08-19
CO6180471A2 (en) 2010-07-19
RU2009119455A (en) 2010-11-27
CA2667497C (en) 2016-05-03
CN101548095A (en) 2009-09-30
RU2450157C2 (en) 2012-05-10
DE102006050203A1 (en) 2008-04-30
CN101548095B (en) 2013-07-17

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