EP2954214B1 - Turbomachine et élément de guidage d'écoulement pour une turbomachine - Google Patents

Turbomachine et élément de guidage d'écoulement pour une turbomachine Download PDF

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Publication number
EP2954214B1
EP2954214B1 EP14701085.4A EP14701085A EP2954214B1 EP 2954214 B1 EP2954214 B1 EP 2954214B1 EP 14701085 A EP14701085 A EP 14701085A EP 2954214 B1 EP2954214 B1 EP 2954214B1
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EP
European Patent Office
Prior art keywords
flow
guiding element
flow guiding
impeller
machine
Prior art date
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Active
Application number
EP14701085.4A
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German (de)
English (en)
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EP2954214A1 (fr
Inventor
Arnaldo Rodrigues
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Sulzer Management AG
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Sulzer Management AG
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/006—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps double suction pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F04D17/105—Centrifugal pumps for compressing or evacuating with double suction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F04D17/12—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps

Definitions

  • the invention relates to a turbomachine, in particular a pump or a turbine, for exchanging energy between flow energy of a flowing fluid and mechanical rotational energy, as well as a flow guide element for such a turbomachine according to the preamble of independent claims 1 and 15.
  • a turbo machine is intended to mean, on the one hand, in particular, but not exclusively, pumps known per se for pumping fluids such as, for example, water, oil, crude oil, in particular also multiphase mixtures which may contain liquid and / or gaseous and / or solid components other machines for conveying or pumping any fluids are also understood.
  • a turbomachine is also to be understood as any type of turbine for turbining a fluid. In particular, but not only for turbines Recovery and / or conversion of flow energy that is inherent in a flowing fluid.
  • Prominent examples of this include turbines, such as those that have been in use for a very long time in pumped storage power plants for the recovery of potential storage energy in a manner known per se.
  • a pump converts excess electrical energy into storable potential energy by driving a pump via an electric motor by means of the excess electrical energy, the pump being water, for example from a low-lying river Elevated water reservoir pumps, so that at least the majority of the excess electrical energy is stored in the elevated water reservoir in the form of potential energy of the water.
  • the electrical energy stored in this way is needed again, it is fed back into the river from the elevated reservoir via a turbine.
  • the turbine is driven by the water flowing down into the river, which in turn drives an electrical generator so that the electrical energy can be recovered.
  • the invention is not limited to a specific type of pump or turbine as such.
  • the invention also relates to double-flow machines, which in the context of this application are to be understood as those flow machines whose essential feature in the case of pumps, which are then often also referred to as double suction pumps, is that the fluid flows to the impeller of the Pump is fed on both sides, essentially symmetrically from both sides.
  • double suction pumps the fluid flows to the impeller of the Pump is fed on both sides, essentially symmetrically from both sides.
  • the fluid is guided away from the impeller of the turbine on both sides, essentially symmetrically from both sides.
  • double impellers are also used, which have two parallel sets of impeller blades, which are connected by a Partition wall can be separated from one another in the axial direction, but need not.
  • turbo machine is also to be understood as any other type of pump or turbine, e.g. multi-stage pumps or turbines each with more than one impeller, etc.
  • centrifugal pump often also called a centrifugal pump.
  • a simple exemplary embodiment of this pump type known from the prior art is greatly simplified schematically on the basis of FIG Fig. 1 shown.
  • the well-known centrifugal pump of the Fig. 1 which is designated as a whole by the reference symbol 1 'below, works in a manner known per se according to a very simple basic principle.
  • the fluid F ' for example water
  • the impeller 2 ' is arranged in an impeller space 3' of the housing 4 'of the turbomachine 1' so as to be rotatable about the axis of rotation A '.
  • the impeller 2 'of the centrifugal pump 1' is driven via an axis of rotation A 'by an electric motor, also not shown, so that the fluid F' due to the rapid rotation of the impeller 2 'by the centrifugal force to the outer edge of the impeller 2' and in the direction of Inner wall 31 'of impeller space 3' is thrown radially outward so that at least part of the mechanical rotational energy of impeller 2 'is transferred to fluid F', partly in the form of kinetic flow energy and partly as pressure energy.
  • the fluid F 'then leaves the pump 1' via the outlet channel 9 'under increased pressure and / or with increased flow energy via the outlet 91' and is fed to further processing or use.
  • centrifugal pump 1 ' can in principle also be used as a turbine by simply drawing the fluid in the opposite direction via the outlet 91' of the turbomachine 1 ' Fig. 1 is supplied under a predeterminable pressure and / or with a predeterminable flow energy, via the impeller space 3 'from the outside via the outer edge of the impeller 2' and via the impeller hub and not illustrated inlet channel from the turbo machine 1 'is discharged again.
  • connection of the turbomachine operated as an outlet in pumping operation becomes the inlet for the fluid in turbine operation, so that functionally, by reversing the fluid flow from the pump, a turbine is created with which the flow energy of the flowing fluid is increased when flowing through the
  • the impeller can be converted into rotational energy, which can then be converted into electrical energy, for example via a connected electrical generator.
  • turbomachine which is well known from the prior art Fig. 1 , or other fluid flow machines known to those skilled in the art, such as those described in, for example US-A-20080279681 , EP-A-1386764 , US-A-3071313 and US-A-0705347 are described, be it pumps or turbines, results essentially from the interaction between the impeller 2 'rotating in the operating state, the flowing fluid F' and the inner wall 31 'of the impeller space 3' of the housing 4 '.
  • the area around the inlet lip L ' is particularly critical, where the distance between the impeller 2' and the inner wall 31 'is usually the smallest and there are strong interactions or repercussions between the one emerging from the impeller 2' and the one via the outlet channel 9 'outflowing fluid F'.
  • the person skilled in the art knows that analogous strong interactions also occur in a turbine in the area of the lip L '. This not only results in static forces acting on the impeller 2 'with different strengths in the circumferential direction U', but also more or less periodically pulsating pressure forces on the impeller 2 'or on the inner wall 31' which additionally have harmful effects such as Eddies or turbulence in the fluid F ', periodically changing harmful forces on the bearing of the impeller, etc. result.
  • the object of the invention is therefore to provide a turbomachine in which the static and dynamic force effects on the impeller are significantly reduced compared to the prior art and at the same time the negative effects and turbulence in the fluid that occur in the impeller space, in particular also in the area of the inlet lip, are massively increased so that, on the one hand, less wear and tear on the impeller, impeller axle and the bearings of the impeller axle is achieved, and on the other hand, the energy efficiency of the turbomachine is significantly increased, so that longer downtimes and longer maintenance intervals are possible, thus saving costs and, at the same time, operating as environmentally friendly as possible is guaranteed.
  • the invention thus relates to a turbomachine, in particular a pump or turbine, comprising an impeller which is rotatable about an axis of rotation in an impeller space of a housing of the turbomachine is arranged.
  • the fluid can be fed to the housing of the turbomachine in such a way that it can be brought into flowing contact for energy exchange with the impeller, and can be removed again from the housing of the turbomachine, with a the axis of rotation running in a circumferential direction of the impeller flow guiding element is provided in the impeller space between an inner wall of the impeller space and the impeller that the impeller is enclosed by the flow guiding element in a predeterminable axial width.
  • the flow guide element is spaced apart from the housing in the direction of the axis of rotation, so that the flow guide element can be flowed around on both sides in the direction of the axis of rotation.
  • a flow guiding element running around the axis of rotation in a circumferential direction of the impeller is provided in the impeller space between an inner wall of the impeller space and the impeller that the impeller has a predeterminable axial width from the flow guiding element is enclosed.
  • the flow guide element according to the invention which in the simplest case is a ring with a rectangular or square ring cross-section, is particularly preferably arranged concentrically with respect to the axis of rotation around the impeller of the turbomachine. It is particularly important that the impeller of the turbomachine is enclosed by the flow guide element according to the invention, especially in the area of the inlet lip, where in the prior art the turbulence in the fluid or the forces that occur are often particularly strong and are subject to particularly strong temporal fluctuations.
  • inlet lip is used in the same way both structurally and geometrically for both turbines and pumps.
  • the invention has thus succeeded for the first time, on the one hand, the absolutely necessary for fundamental technical reasons, in To maintain the circumferential increasing constriction or expansion of the free space between the impeller and the inner wall, and on the other hand, at the same time, to significantly reduce the static and dynamic forces acting on the impeller compared to the prior art. And at the same time to massively reduce the negative effects that occur in the impeller space, especially in the area of the inlet lip, such as eddies and turbulence in the fluid, so that on the one hand less wear is achieved on the impeller, impeller axle and the bearings of the impeller axle. And, on the other hand, the energy efficiency of the turbo machine is significantly increased, so that longer downtimes and longer maintenance intervals are possible through the invention, which significantly saves costs and at the same time ensures operation that is as environmentally friendly as possible.
  • the result of the flow guide element according to the invention is that, for example, even where the impeller is closer to the inner wall, the forces on the impeller in the operating state are essentially not greater than seen in the circumferential direction at another point where the impeller is at a greater distance from the inner wall Has.
  • the flow guide element according to the invention distributes the forces acting on the impeller much more evenly and the forces acting on the impeller of the turbomachine in the operating state thus no longer increase massively in the corresponding circumferential direction in which the distance between the impeller and the inner wall decreases.
  • the flow guide element according to the invention also encloses the impeller in the area of the inlet lip, where the distance between the impeller and the inner wall is usually the smallest and thus particularly strong interactions or repercussions in the flowing fluid or between the flowing fluid and the inner wall in the prior art of the impeller chamber occur, the forces on the impeller, as well as the turbulence and negative interactions between fluid and Significantly reduced inner wall or between fluid and impeller.
  • the reduction in the harmful interactions affects not only the static forces on the impeller, which are of different strength in the circumferential direction, but also the more or less periodically pulsating pressure forces on the impeller.
  • the flow guide element is, as already mentioned, designed in the form of a cylindrical flow ring of a predeterminable width, which preferably, but not necessarily, corresponds approximately to the axial width of the impeller.
  • the flow guide element, in particular the cylindrical flow ring, is designed around the impeller at a predeterminable radial distance from the axis of rotation in the circumferential direction.
  • a cross section of the flow guide element is at least partially rectangular and / or at least partially teardrop-shaped, the width of the flow guide element advantageously being able to decrease in the radial direction towards or away from the impeller, whereby a flow around the flow guide element may be improved or optimized can. It is thus possible that in the case of a pump the width of the flow element decreases in the radial direction towards the impeller, while in the case of a turbine the width of the flow guide element decreases in the radial direction away from the impeller.
  • the width of the flow guiding element can in certain cases also decrease simultaneously in both radial directions, that is, in the radial direction towards the impeller and away from the impeller, which can be particularly advantageous for a turbo machine that can be used both as a pump and is also used as a turbine, but depending on the design, this can be advantageous in the case of a flow machine operated only as a pump or only as a turbine.
  • the flow guide element is not designed as a compact ring, but that one or more throughflow openings of predeterminable identical or different sizes are provided on the flow element, which for example extend essentially in the radial direction and / or in the axial and / or transverse to can extend in the radial direction, whereby the flow of the fluid can be optimized depending on the specific design of the turbomachine and the formation of harmful eddies and turbulence in the fluid can be further reduced.
  • an edge surface of the flow guide element extending in the axial direction has a structured surface, in particular a periodically structured surface extending in the circumferential direction, whereby, of course, an edge surface of the flow guide element extending in the radial direction also has a structured surface can have, in particular can have a periodically structured surface extending in the circumferential direction, whereby the flow of the fluid in the turbo machine or the creation of harmful eddies and turbulences can also be optimized, taking into account the construction details of the turbo machine.
  • the flow guide element can also be designed as a multi-part flow guide element, in particular as a multi-part flow guide element comprising at least two radially nested sub-elements, in particular in the form of two concentric elements Partial elements be formed.
  • the flow-guiding element can alternatively or simultaneously be a multi-part flow-guiding element, which in particular comprises a multi-part flow-guiding element comprising at least two axially Can be mutually offset axial sub-elements, and in particular comprises two axial sub-elements arranged next to one another.
  • the flow guide element can be fastened to a fastening element on the housing, it being possible for a plurality of fastening elements to be preferably provided.
  • the fastening element can specifically be any suitable fastening element, e.g. a web or rod that is welded or screwed to the housing and the flow guide element at the same time, which is suitably designed and aligned with respect to the fluid flow in the turbomachine, or any other suitable fastening means known per se to the person skilled in the art be.
  • the fastening element can be arranged parallel to the axis of rotation of the turbomachine and / or the fastening element can be arranged perpendicular to the axis of rotation and / or the fastening element can of course also be arranged transversely to the axis of rotation.
  • the person skilled in the art knows which type of fastening is advantageously chosen depending on the specific structural design of the turbomachine.
  • a guide vane can be provided in a known manner on the flow guide element in a preferred embodiment, a wall guide vane also being provided on the inner wall of the impeller space, of course, in addition or as an alternative.
  • the guide vane can extend at a predeterminable radial angle of inclination from the flow guide element in the radial direction to the inner wall of the impeller chamber, and / or the guide vane can extend at a predeterminable axial inclination angle extends from the flow guide element in the axial direction to the inner wall of the impeller chamber. All measures that are known per se to the person skilled in the art from the prior art.
  • the flow machine according to the invention can in particular also be a double flow machine, in particular a double suction pump or a double flow turbine and / or a multi-stage flow machine with a plurality of impellers.
  • a turbo machine of the present invention can be any turbo machine in which a flow guiding element according to the invention can advantageously be used.
  • the invention also relates to a flow guiding element for a turbo machine of the present invention, wherein a flow guiding element according to the invention can in the specific case be designed according to one of the embodiments described in this application or according to suitable combinations thereof.
  • Fig. 1 relates to a known centrifugal pump, which has already been described in detail at the beginning and therefore does not need to be discussed here, for a better understanding of the delimitation of the invention from the prior art.
  • FIG. 1a Based on Fig. 1a and Figure 1b a first special exemplary embodiment of a flow machine according to the invention in the form of a centrifugal pump is described in detail below by way of example, with Figure 1b a section along the section line II according to Fig. 1a shows.
  • the inventive turbomachine of Fig. 1a or. Figure 1b which is designated as a whole in the following with the reference numeral 1, in the present special embodiment is a centrifugal pump comprising an impeller 2 which is arranged in an impeller space 3 of a housing 4 of the turbo machine 1 so as to be rotatable about an axis of rotation A.
  • the fluid F can be supplied to the housing 4 of the turbo machine 1 via an inlet channel, not explicitly shown for reasons of clarity, via the impeller 2 in the area of the impeller hub that the fluid F can be brought into flowing contact with the impeller 2 for the exchange of energy, and can be discharged again from the housing 4 of the turbomachine 1 via the outlet channel 9 and the outlet 91 for further use.
  • a flow guiding element 5, 51, 52 running around the axis of rotation A in a circumferential direction U of the impeller 2 is provided in the impeller space 3 between an inner wall 31 of the impeller space 3 and the impeller 2 that the impeller 2 is separated from the flow guiding element 5, 51, 52 in a predeterminable axial width B is enclosed.
  • the flow guide element 5, 51, 52 is in the form of a substantially cylindrical flow ring 51 of width B at a radial distance R from the axis of rotation A in the circumferential direction U around the impeller 2, wherein in the present embodiment the flow ring 51 has a width B, which corresponds approximately to the axial width of the impeller 2.
  • the cross section of the flow guide element 5, 51, 52 is largely rectangular, but the width B of the flow guide element 5, 51, 52 is slightly reduced in the radial direction towards the impeller 2, such as in particular the Figure 1b can be seen, whereby the flow around the flow guide element 5, 51, 52 is optimized.
  • FIG. 1c and Fig. 1d each show a second and third exemplary embodiment according to FIG Fig. 1a , using the Figure 1c a turbomachine 1 with a flow guide element 5, 51, 52 with two radially, concentrically nested sub-elements 521 is shown, while on the basis of FIG Fig. 1d a third embodiment according to Fig. 1a is shown, in which the flow guide element 5, 51, 52 has a plurality of radially outwardly extending flow openings 500, which on the one hand improve the flow characteristics of the fluid F in the area of the impeller 2 and on the other hand are designed in such a way that due to the flow openings 500 also the In the operating state acting on the impeller 2 forces are optimized.
  • the Fig. 1e shows schematically a third exemplary embodiment of a turbomachine 1 according to the invention according to FIG Fig. 1a with guide vanes 7 on the flow guide element 5, 51 for guiding the fluid F and additional wall guide vanes 8 for guiding the fluid F, which are provided in a manner known per se on the inner wall 31 of the impeller chamber 3.
  • the guide vanes 7 on the inventive flow element 5, 51 are attached at a predeterminable radial angle of inclination ⁇ which can be suitably set by a person skilled in the art depending on the application as a pump or turbine or in coordination with the operating parameters required in the specific application.
  • the arrangement or the configuration of the flow guiding element 5, 51, 52 can also take place differently than shown by way of example in the drawings. So can according to Fig. 1f the The flow guiding element 5, 51, 52 can also be arranged at an angle to the axis of rotation A or have a roof shape, whereby the tip of the roof of the flow guiding element can also be directed away from the axis of rotation A or away from the axis of rotation A depending on the hydraulic requirements.
  • the flow guide element 5, 51, 52 it is also possible for the flow guide element 5, 51, 52 to be tightly fastened on one side over the entire circumference to the inner wall 31 of the impeller chamber 3, so that the flow guide element 5, 51, 52 has a relative to the Impeller space 3 forms a space closed on one side or can be arranged or configured in any other suitable form.
  • FIG. 2a and Figure 2b show schematically another special embodiment of a turbo machine 1 according to the invention, which is implemented here in the form of a simple turbine.
  • the Figure 2b shows a section along the section line II-II according to FIG Fig. 2a .
  • the principle basic structure of the turbine according to Fig. 2a or. Figure 2b is essentially identical to that of the pump according to FIG Fig. 1a or. Figure 1b .
  • the pump of the Fig. 1a or. Figure 1b is actually simply a turbine according to Fig. 2a or. Figure 2b that the fluid F is now supplied to the turbomachine 1 via the connection designated as outlet channel 9 or outlet 91 in the case of the pump and is discharged again for further use via the connection designated as the inlet channel in the case of the pump. Or to put it more simply: the pump according to Fig. 1a or.
  • Figure 1b thus becomes the turbine according to Fig. 2a or.
  • Figure 2b that the direction of the flow of the fluid F through the turbo machine 1 is reversed.
  • turbo machines 1 can be used advantageously in pumped storage power plants, for example, because then one and the same turbo machine 1 initially uses the water to store excess water electrical energy can be pumped into a higher reservoir during pumping operation and can later be converted back into electrical energy using the same fluid flow machine 1, which is now simply reversed by the water flowing through it and thus works as a turbine.
  • Fig. 3a and Figure 3b finally show two further design variants of special exemplary embodiments of flow guide elements 5, 51 according to the invention in an exemplary schematic representation.
  • Fig. 3a shows a flow guide element 5, 51 according to the invention with an axially extending structured surface which periodically forms longitudinal channels in the circumferential direction U on an inner surface of the flow guide element 5, 51.
  • Figure 3b shows another flow guide element 5, 51 according to the invention with a radially extending, periodically structured surface on the two axial boundary surfaces of the flow guide element 5, 51.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
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Claims (14)

  1. Une machine à écoulement, en particulier une pompe ou une turbine, comprenant une roue (2) qui est disposée dans une chambre de la roue (3) d'un boîtier (4) de la machine à écoulement de manière à pouvoir tourner autour d'un axe de rotation (A), dans laquelle, pour l'échange d'énergie entre une énergie d'écoulement d'un fluide en écoulement (F) et une énergie de rotation mécanique, le fluide (F) peut être amené au boîtier (4) de la machine à écoulement de telle sorte qu'il peut être mis en contact d'écoulement avec la roue (2) pour l'échange d'énergie, et peut être déchargé à nouveau du boîtier (4) de la machine à écoulement, dans laquelle un élément de guidage d'écoulement (5, 51, 52) s'étendant autour de l'axe de rotation (A) dans une direction circonférentielle (U) de la roue (2) est prévu dans la chambre de la roue (3) entre une paroi intérieure (31) de la chambre de la roue (3) et la roue (2) de telle sorte que la roue (2) est entourée par l'élément de guidage d'écoulement (5, 51, 52) dans une largeur axiale (B) prédéterminable, caractérisé en ce que l'élément de guidage d'écoulement (5, 51, 52) est espacé du boîtier (4) dans la direction de l'axe de rotation (A), de sorte que l'élément de guidage d'écoulement (5, 51, 52) peut être circulé des deux côtés dans la direction de l'axe de rotation (A).
  2. Une machine à écoulement selon la revendication 1, dans laquelle l'élément de guidage d'écoulement (5, 51, 52) est conçu sous la forme d'un anneau d'écoulement cylindrique (51) de largeur (B), à une distance radiale (R) de l'axe de rotation (A) dans la direction circonférentielle (U) autour de la roue (2).
  3. Une machine à écoulement selon l'une des revendications 1 ou 2, dans laquelle une section transversale de l'élément de guidage d'écoulement (5, 51, 52) est au moins partiellement rectangulaire et/ou au moins partiellement en forme de goutte.
  4. Une machine à écoulement selon l'une des revendications précédentes, dans laquelle la largeur (B) de l'élément de guidage d'écoulement (5, 51, 52) diminue dans la direction radiale vers la roue (2) et/ou dans laquelle la largeur (B) de l'élément de guidage d'écoulement (5, 51, 52) diminue dans la direction radiale en s'éloignant de la roue (2).
  5. Une machine à écoulement selon l'une des revendications précédentes, dans laquelle une ouverture d'écoulement (500) est prévue sur l'élément de guidage d'écoulement (5, 51, 52).
  6. Une machine à écoulement selon l'une des revendications précédentes, dans laquelle une surface de bord (510) de l'élément de guidage d'écoulement (5, 51, 52) s'étendant dans la direction axiale présente une surface structurée (511), en particulier une surface structurée périodiquement (511) s'étendant dans la direction circonférentielle (U).
  7. Une machine à écoulement selon l'une des revendications précédentes, dans laquelle une surface de bord (520) de l'élément de guidage d'écoulement (5, 51, 52) s'étendant dans la direction radiale présente une surface structurée (521), en particulier une surface structurée périodiquement (521) s'étendant dans la direction circonférentielle (U).
  8. Une machine à écoulement selon l'une des revendications précédentes, dans laquelle l'élément de guidage d'écoulement (5, 51, 52) est un élément de guidage d'écoulement (52) en plusieurs parties, en particulier un élément de guidage d'écoulement (52) en plusieurs parties comprenant au moins deux sous-éléments (521) emboîtés radialement, en particulier comprenant deux sous-éléments (521) mutuellement concentriques.
  9. Une machine à écoulement selon l'une des revendications précédentes, dans laquelle l'élément de guidage d'écoulement (5, 51, 52) est un élément de guidage d'écoulement (52) en plusieurs parties, en particulier un élément de guidage d'écoulement (52) en plusieurs parties comprenant au moins deux sous-éléments axiaux décalés axialement l'un par rapport à l'autre, en particulier comprenant deux sous-éléments axiaux disposés côte à côte.
  10. Une machine à écoulement selon l'une des revendications précédentes, dans laquelle l'élément de guidage d'écoulement (5, 51, 52) est fixé à un élément de fixation (6) sur le boîtier (4), dans laquelle, de préférence, une pluralité d'éléments de fixation (6) est prévue et/ou dans laquelle l'élément de fixation (6) est disposé parallèlement à l'axe de rotation (A) de la machine à écoulement et/ou dans laquelle l'élément de fixation (6) est disposé perpendiculairement à l'axe de rotation (A) et/ou dans laquelle l'élément de fixation (6) est disposé transversalement à l'axe de rotation (A).
  11. Une machine à écoulement selon l'une des revendications précédentes, dans laquelle l'élément de guidage d'écoulement (5, 51, 52) est fixé de manière étanche à la paroi intérieure (31) de la chambre de la roue (3) sur la moitié de toute la circonférence, de sorte que l'élément de guidage d'écoulement (5, 51, 52) forme un espace qui est fermé sur une moitié de son côté par rapport à la chambre de la roue (3).
  12. Une machine à écoulement selon l'une des revendications précédentes, dans laquelle une aube directrice (7) pour guider le fluide (F) est prévue sur l'élément de guidage d'écoulement (5, 51, 52) et/ou dans laquelle une aube directrice de paroi (8) pour guider le fluide (F) est prévue sur la paroi intérieure (31) de la chambre de la roue (3).
  13. Une machine à écoulement selon la revendication 12, dans laquelle l'aube directrice (7) s'étend avec un angle d'inclinaison radiale (α) prédéterminable depuis l'élément de guidage d'écoulement (5, 51, 52) dans la direction radiale jusqu'à la paroi intérieure (31) de la chambre de la roue (3), et/ou dans laquelle l'aube directrice (7) s'étend avec un angle d'inclinaison axiale prédéterminable depuis l'élément de guidage d'écoulement (5, 51, 52) dans la direction axiale jusqu'à la paroi intérieure (31) de la chambre de la roue (3).
  14. Une machine à écoulement selon l'une des revendications précédentes, dans laquelle la machine à écoulement est une machine à double flux, en particulier une pompe à double aspiration ou une turbine à double flux et/ou dans laquelle la machine à écoulement est une machine à écoulement à plusieurs étages avec une pluralité de roues (2).
EP14701085.4A 2013-02-08 2014-01-22 Turbomachine et élément de guidage d'écoulement pour une turbomachine Active EP2954214B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14701085.4A EP2954214B1 (fr) 2013-02-08 2014-01-22 Turbomachine et élément de guidage d'écoulement pour une turbomachine

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13154649 2013-02-08
EP14701085.4A EP2954214B1 (fr) 2013-02-08 2014-01-22 Turbomachine et élément de guidage d'écoulement pour une turbomachine
PCT/EP2014/051176 WO2014122016A1 (fr) 2013-02-08 2014-01-22 Turbomachine et guide d'écoulement pour turbomachine

Publications (2)

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EP2954214A1 EP2954214A1 (fr) 2015-12-16
EP2954214B1 true EP2954214B1 (fr) 2021-03-03

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US (1) US10634164B2 (fr)
EP (1) EP2954214B1 (fr)
CN (1) CN105102823B (fr)
BR (1) BR112015016909A2 (fr)
WO (1) WO2014122016A1 (fr)

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DE102017221717A1 (de) * 2017-12-01 2019-06-06 Man Energy Solutions Se Radialverdichter
CN108397389A (zh) * 2018-03-15 2018-08-14 潘晓江 一种真空泵及其多级真空泵
USD902961S1 (en) * 2019-03-01 2020-11-24 Savant Holdings LLC Compressor housing
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USD958195S1 (en) * 2020-09-26 2022-07-19 Weir Slurry Group, Inc. Main liner for a pump

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Also Published As

Publication number Publication date
WO2014122016A1 (fr) 2014-08-14
EP2954214A1 (fr) 2015-12-16
US20150361990A1 (en) 2015-12-17
US10634164B2 (en) 2020-04-28
BR112015016909A2 (pt) 2017-07-11
CN105102823B (zh) 2021-08-27
CN105102823A (zh) 2015-11-25

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