EP2172654B2 - Agrégat de pompe centrifuge - Google Patents

Agrégat de pompe centrifuge Download PDF

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Publication number
EP2172654B2
EP2172654B2 EP08017263.8A EP08017263A EP2172654B2 EP 2172654 B2 EP2172654 B2 EP 2172654B2 EP 08017263 A EP08017263 A EP 08017263A EP 2172654 B2 EP2172654 B2 EP 2172654B2
Authority
EP
European Patent Office
Prior art keywords
rib
centrifugal pump
flow
pump assembly
assembly according
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.)
Active
Application number
EP08017263.8A
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German (de)
English (en)
Other versions
EP2172654A1 (fr
EP2172654B1 (fr
Inventor
Nicholas Pedersen
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.)
Grundfos Management AS
Original Assignee
Grundfos Management AS
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40420096&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2172654(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Grundfos Management AS filed Critical Grundfos Management AS
Priority to AT08017263T priority Critical patent/ATE511606T1/de
Priority to EP08017263.8A priority patent/EP2172654B2/fr
Priority to PL08017263T priority patent/PL2172654T5/pl
Priority to US13/122,236 priority patent/US8858170B2/en
Priority to PCT/EP2009/005681 priority patent/WO2010037444A1/fr
Priority to CN200980148331.7A priority patent/CN102232147B/zh
Publication of EP2172654A1 publication Critical patent/EP2172654A1/fr
Publication of EP2172654B1 publication Critical patent/EP2172654B1/fr
Application granted granted Critical
Publication of EP2172654B2 publication Critical patent/EP2172654B2/fr
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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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088—Testing machines
    • 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
    • F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
    • 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
    • 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
    • F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers

Definitions

  • the invention relates to a centrifugal pump unit with the features specified in the preamble of claim 1.
  • centrifugal pump units are used for example as Bankungsumwölzpumpen.
  • such pumps are used in systems in which the flow through the lines is determined to be taken into account in the control and / or regulation of the system. This is the case, for example, in heating systems, in which the flow through the pump or an adjacent pipeline is determined.
  • flow sensors are arranged in the pipelines.
  • US 5,129,264 shows a generic centrifugal pump, in which several pressure sensors are arranged in the discharge nozzle. By means of these pressure sensors, pressure values are detected which, given a known design of the pump, are suitable for detecting the flow on account of the pressure differences occurring at different points of the pump.
  • the inventive centrifugal pump unit has in a known manner at least one impeller and an inlet side of the impeller located suction nozzle and an output side of the impeller located pressure nozzle. Suction nozzle and discharge nozzle end at their free ends facing away from the impeller in a known manner, preferably in a flange which allows connection to adjacent pipes.
  • a flow sensor is integrated into this centrifugal pump unit.
  • the flow sensor is arranged in a line section of the centrifugal pump assembly. This may be a conduit section in the suction port or a conduit section in the discharge port. Alternatively, it is also possible that in each case a flow sensor is arranged both in the discharge nozzle and in the suction nozzle.
  • the flow measurement with known flow sensors in the areas of suction and discharge nozzles is not readily possible.
  • a certain minimum distance between impeller and flow sensor must be maintained, which is not available in a pump unit of conventional design.
  • the guide element is suitable for influencing the flow prevailing in the line section.
  • the guide element can influence the flow so that the measurement result of the flow sensor is not or only insignificantly influenced by the turbulence in the suction nozzle or discharge nozzle.
  • the guide element is thus preferably designed so that it keeps disturbing turbulence of the flow sensor.
  • the flow sensor is a vortex flow sensor.
  • an obstruction is arranged in the flow, which causes turbulence in the flow, which are then detected by measurement by means of a pressure sensor. From the frequency of the vortex flow velocity can be determined. It should be understood that such a sensor would be severely affected by turbulence or turbulence in the flow in its measurement result.
  • the guide element according to the invention is provided which influences the flow in the line section in which the sensor is arranged in such a way that disturbing turbulences or turbulences which could falsify or impair the measurement result are kept away from the sensor.
  • the at least one guide element is therefore preferably suitable for calming the flow prevailing in the line section in which the flow sensor is arranged.
  • the at least one guide element is therefore preferably suitable for calming the flow prevailing in the line section in which the flow sensor is arranged.
  • the at least one guide element is designed as a rib projecting inwards from the inner wall of the line section.
  • a rib is particularly suitable for damping or suppressing rotating flows in the line section, since such a rib opposes such a flow.
  • a rib on the inner wall of the conduit section is preferably arranged on the outer side of the curvature, ie on the concavely curved inner wall or the inner wall with a larger radius of curvature.
  • the rib is designed such that it extends in the flow direction of a fluid to be conveyed along the inner wall of the line section.
  • Strö determination is little influenced by the rib, rotating currents, however, provides the rib a significant resistance, so that such currents or turbulence in the line section are attenuated or suppressed. In this way, disturbances that affect the measurement result of the flow sensor are reduced.
  • the rib preferably extends between the flow sensor and the impeller.
  • the rib preferably extends from its obstruction into a region of curvature of the suction nozzle.
  • Such a rib may be integrally formed on the inner wall of the line section or used as a separate component in the line section.
  • the rib may be formed as an insert or part of an insert, which is inserted into the line section, for example, the suction nozzle.
  • Such an insert may preferably be formed of plastic.
  • a sensor of the flow sensor is disposed in the rib. This applies in particular to the design of the sensor as a vortex flow sensor.
  • the pressure sensor which detects the turbulence caused by the obstruction, can be arranged in the rib. In this way, the flow resistance caused by the rib and the pressure sensor in the line section is minimized.
  • the senor has two pressure transducer surfaces and is arranged in the rib such that the two Druckierêtflöchen are each connected to one side of the rib for pressurizing.
  • a differential pressure between both sides of the rib can be detected by the sensor.
  • the pressure transducer surfaces may be directly formed as a pressure-receiving membrane on or in the surfaces of the rib.
  • At least one recess for receiving the measuring sensor can be formed in the rib.
  • rib and probe can be made separately, but used in the line section cooperate so that overall the flow resistance in the longitudinal direction of the line section is minimized.
  • the measuring sensor is inserted from the outside through an opening in the line section, so that a free end of the measuring probe extends into the line section. In the previously described embodiment of the rib, the free end of the probe then extends into the recess in the rib.
  • Such an arrangement makes it possible to exchange the sensor easily from the outside.
  • the line section can also have outwardly leading openings or channels, which make it possible to arrange the sensor outside the line section and the flow path defined by this. In this way, the flow inside the line section is even less affected, and the mounting or accessibility of the flow sensor can be improved.
  • the rib arranged in the line section preferably has a rounded or triangular cross section transverse to the flow direction.
  • the rounded configuration achieves an optimized flow guidance along the rib.
  • the at least one guide element may be formed as at least one profile plate projecting inwardly from the inner wall of the line section, which profile is oriented transversely to the flow direction of a fluid to be delivered. That is, such a profile plate opposes the flow along the longitudinal axis of the line section. Such a profile plate thus represents a certain flow resistance in the line section.
  • a profile plate in the line section serves to prevent unwanted turbulences or turbulences in the flow direction from being able to propagate unhindered in the line section.
  • the profile plate brakes or prevents propagation of turbulences, which emanate from the impeller and propagate in the longitudinal direction of the line section in this opposite to the flow direction.
  • the profile plate preferably extends transversely to the rib and more preferably symmetrically to the median plane of the rib.
  • the hot, rib and profile plates intersect each other, with the rib penetrating the profile plate at its centerline.
  • the profile plate starting from the inner wall of the conduit section, extends further inwardly into the conduit section than the rib. That is, in the radial direction, the profile plate protrudes from the inner wall of the line section over the upper edge of the rib.
  • the profile plate is inclined, starting from the inner wall in the flow direction of the fluid to be delivered. In this way, the flow resistance in the flow direction of the fluid is reduced by the line section which forms the profile plate.
  • this arrangement is in the case that the flow sensor is located in the suction nozzle. Turbulences, which are caused by the impeller, propagate in the suction nozzle counter to the flow direction in the longitudinal direction of the suction nozzle. In order to brake this propagation of turbulences against the flow direction, at least one profile plate described can be arranged in the suction nozzle.
  • the profile plate If the profile plate is inclined in the flow direction, the flow resistance is reduced in the flow direction, the propagation of the turbulence against the flow direction, however, opposes such profile plate. Facing the impeller, the profile plate thus forms a kind of pocket in which such turbulences are damped or braked.
  • the at least one profile plate is preferably arranged behind a measuring sensor of the sensor in the flow direction of the fluid to be delivered. This applies in particular to the arrangement of the sensor in the suction nozzle of the pump unit. This arrangement causes the profile plate does not affect the flow of the sensor through the fluid, since it is located only downstream of the sensor. On the other hand, the profile plate can thus brake the propagation of turbulence caused by the impeller against the flow direction, so that these turbulences do not reach the sensor or at least in a weakened form, so that the disturbances that would affect the measurement result of the sensor to be minimized.
  • the plurality of profile plates are preferably all inclined in the flow direction, wherein preferably all profile plates have the same angle of inclination to the inner wall of the line section. In this way, a particularly uniform flow guidance is achieved in the flow direction.
  • the flow sensor is preferably located at the end of the conduit portion spaced from the impeller, preferably with an obstruction of the flow sensor located at the end of the suction port spaced from the impeller.
  • the obstruction may be formed, for example, in an insert which is inserted from the open end into the suction nozzle, so that the obstruction is located at the end of the suction.
  • the insert may also extend in the manner described above beyond the axial end of the suction nozzle, so that it can enter into a subsequent pipeline.
  • the obstruction integrally with the suction nozzle or to use the obstruction through an opening in the wall of the suction nozzle in the radial direction in the cross section of the suction nozzle.
  • the obstruction preferably extends in the diameter direction through the entire cross section of the suction nozzle.
  • the opening into which the obstruction is used for example, be an existing opening for pressure detection, so that even in an existing centrifugal pump unit such obstruction can be used. Due to the position at the axial inlet end of the suction nozzle, the greatest possible distance between obstruction and impeller is achieved.
  • a tubular or tubular insert may be provided at the free end of the suction nozzle, which is inserted into the suction nozzle, so that it protrudes from the end into the suction nozzle. Moreover, the insert extends beyond the free end of the suction nozzle such that it can enter an adjacent pipe when the suction nozzle is connected to this pipe. In this way, the use of an optimized flow guidance in the transition or connection area of pipe performance and suction is achieved.
  • the insert rests against the inner wall of the suction nozzle and adjacent pipeline.
  • the insert is preferably elastic, so that it can compensate for a small offset between the pipe and suction. Incidentally, it bridges the flange or connecting region, so that edges or undercuts, at which swirling could occur, are avoided and thus a flow sensor placed in the inlet region of the suction nozzle can be flown as optimally as possible.
  • each of the figures shows in each case a sectional view through a pump housing 2 along the center plane of the suction nozzle 4.
  • This center plane extends along the longitudinal axis of the suction nozzle 4, ie. H. the flow direction of a fluid to be delivered.
  • the cross section also extends in the diameter direction through the receiving space 6 of the pump housing 2, in which a not shown impeller of the pump is arranged.
  • a connecting flange 8 is formed for connecting a drive motor.
  • the suction nozzle 4 terminates at its end facing away from the receiving space 6 and thus the impeller axial end in a flange 10. Correspondingly terminates at the diametrically opposite side of the pump housing 2 of the discharge nozzle 12 in a flange fourteenth
  • a flow sensor is integrated in the pump housing 2, which as a vortex flow sensor, d. H. is formed as a flow sensor based on the Karman phenomenon of vortex shedding.
  • This flow sensor has, as an essential element, an obstruction 16, which causes eddies in the flow, the frequency of which is detected by a pressure sensor. The frequency of the vortex is proportional to the flow velocity.
  • a first embodiment of such an obstruction 16 is in the FIGS. 1 to 6 shown.
  • the obstruction is arranged at that axial end of the suction nozzle 4, which is facing away from the receiving space 6 and thus the impeller, ie close to or in the flange 10.
  • the obstruction 16 is preferably triangular in cross section (not shown here) and extends in the diameter direction across the suction nozzle. 4
  • a sensor 18 can be arranged so that it extends into the suction nozzle 4, as in Fig. 5 shown, or it may be a sensor outside the suction nozzle 4 are arranged.
  • a channel 20 or possibly a plurality of channels 20 are provided, which extend from the inside of the suction nozzle 4 to the outside and allow an array of sensors on the outside of the suction nozzle 4.
  • the probes are not shown, but it should be understood that a sensor 18 or channel 20 is also included in these embodiments as shown in FIGS FIGS. 5 or 6 shown manner is arranged.
  • the arrangement of the flow sensor and in particular the sensor 18 in the pump housing 2 is associated with the problem that the measurement result can be affected by turbulence caused by the rotating impeller in the receiving space 6.
  • the suction nozzle 4 guide elements are arranged in the line section in which the flow sensor is formed.
  • a first such guide element is in Fig. 1 shown.
  • a rib 22 can be seen, which extends from the inner wall of the suction nozzle 4 radially inwardly.
  • the rib 22 extends in the longitudinal direction of the suction nozzle 4 web-shaped on the inner wall of the suction nozzle 4 along.
  • the rib is preferably rounded or triangular in cross-section, not shown here, so that it allows optimized flow guidance in the longitudinal direction of the suction nozzle 4 with sufficient stability.
  • the rib 22 extends in the suction nozzle 4 into the curvature region, in which the suction nozzle 4 curves towards the receiving space 6. In the in Fig. 1 In the example shown, the rib 22 starts in the flow direction spaced behind the obstruction 16.
  • the rib 22 extends to the obstruction 16 zoom.
  • the rib 22 causes in particular rotating flows or turbulences are damped in the interior of the suction nozzle 4, whereby the measurement result of the flow sensor is improved.
  • Such turbulences can propagate from the impeller in the receiving space 6 counter to the flow direction S in the intake 4 to the flow sensor or its obstruction 16 out.
  • the rib 22 minimizes such turbulence.
  • FIGS. 3 and 4 show the arrangement of another possible guide element in the form of two profile plates 24.
  • the profile plates 24 extend transversely to the flow direction S, starting from the inner wall of the suction nozzle 4 into the suction.
  • the profile plates 24 extend in a direction transverse to the extending direction of FIG FIGS. 1 to 2 explained rib 22.
  • two profile plates 24 are provided spaced apart in the flow direction S to each other.
  • the profile plates 24 extend at an angle to the inner wall 26 of the suction nozzle 4. In this case, both profile plates 24 extend substantially at the same angle to the inner wall 26.
  • the inclination of the profile plates 24 is selected so that they in the flow direction S are inclined, ie they move away from the inner wall 26 in the flow direction S farther and farther from the inner wall 26.
  • the profile plates 24 serve to a progression of turbulence or turbulence against the flow direction S starting from the impeller, which in the receiving space 6 is arranged to prevent or damp, so that the flow in the region of the flow sensor, ie the obstruction 16 and the sensor 18 and the channel 20 is calmed and so the measurement result is not affected by turbulence caused by the impeller.
  • the profile plates 24 are arranged in the flow direction between the sensor 18 and the channel 20 and the receiving space 6.
  • Fig. 4 shows a combination of the profile plates 24 with the above-described rib 22.
  • the rib 22 cuts the profile plates 24 normal to the surface of the profile plates 24.
  • the profile plates 24 are preferably formed so that they to the median plane of the rib 22 are symmetrical. Starting from the inner wall 26, the profile plates 24 extend further into the interior of the suction nozzle 4 as the rib 22nd
  • the sensor 18 may be inserted from the outside through the wall of the suction nozzle 4 so that its free end 28 protrudes into the interior of the suction nozzle 4.
  • the free end of the sensor 28 there are pressure-receiving surfaces or pressure-receiving regions 30, via which the pressures or pressure changes caused by the vortices in the interior of the suction nozzle 4 are absorbed.
  • pressure transducer surfaces are preferably formed on two opposite sides of the free end 28, so that the pressures on two sides of the probe 18 can be detected.
  • the sensor 18 is arranged with its free end 28 in the rib 22 so that its two sides with their respective Druckaufrich lake 30 each one of the sides of the rib 22 faces or are directed to one of the sides of the rib 22.
  • a corresponding receptacle for the free end of the pressure sensor 18 is formed, in which this preferably fits, so that the free end 28 of the probe 18 is located in the interior of the rib 22 and so the flow inside the suction 4 in Flow direction S affected as little as possible.
  • a rib 22 and / or profile plates 24 are arranged, which are not shown here for the sake of simplicity.
  • the channel 20 may extend into the rib 22 and preferably be open to one or both side walls of the rib 22.
  • two channels 20 are provided, each of which is open to a side wall of the rib 22. Outside the suction nozzle 4, the channels 20 are then in communication with pressure transducer surfaces of one or more sensors.
  • the obstruction 16 ' is arranged similar to the obstruction 16 according to the FIGS. 1 to 6 but does not extend over the entire diameter of the suction nozzle 4, but projects from the inner wall 26 only by a length in the interior of the suction nozzle 4 in which is smaller than the inner diameter of the suction nozzle 4.
  • the obstruction is preferably located in the peripheral area, in which a sensor is located.
  • the remaining embodiment corresponds to the previous description.
  • Guiding elements such as rib 22 and / or profile plates 24 are arranged, however, in Fig. 7 not shown.
  • the obstruction is 16 "rod-shaped and extends in the diametrical direction completely through the suction port 4 from one side of the inner wall 26 to the opposite side of the inner wall 25.
  • the obstruction 16" as well as the obstruction 16 and 16 ' is preferably triangular.
  • the obstruction 16 " is inserted from the outside through a hole 32 in the suction nozzle 4.
  • the hole 32 extends in the flange 10 from the outer periphery rather into the interior of the suction nozzle 4.
  • Such a hole can be provided with conventional pump units, for example, for a pressure sensor and also to accommodate an obstruction 16 "serve.
  • the hole 32 allows for easy insertion and replacement of the obstruction 16 "from the outside
  • conventional pumps having such a hole 32 can be provided with such an obstruction 16" later.
  • the obstruction 16 "' is formed as part of an insert 34.
  • the insert 34 is inserted from the open end into the suction nozzle 4 so that it extends beyond the end of the flange 10 to the outside and into a subsequent pipeline 36 which over
  • the insert 34 is substantially tubular in shape and the obstruction 16 "'extends in a diametric direction from one side to the diametrically opposite side of the insert 34.
  • the obstruction 16 is in cross section '' designed as described above with reference to the obstruction 16, 16 'and 16'.
  • the peripheral wall of the insert 34 bridges the connection area between the flanges 10 and 38 and a gap, if any, between them.
  • the peripheral wall of the insert 34 may be formed so that it comes smoothly against the inner peripheries of the suction nozzle 4 and the pipe 36 so that it forms no edges or the like there, at which it could come to turbulence of the flow.
  • the edges are preferably aerodynamically optimized, ie rounded, for example.
  • peripheral walls of the insert 34 may preferably be formed elastically, so that a sealing contact with the inner circumference of the suction nozzle 4 and the pipe 36 is ensured, especially if there should be a slight offset between the suction 4 and pipe 36. Thus, even with such an offset a smooth flow path between the pipe 36 and suction 4 without larger edges and steps can be created.
  • FIGS. 8 and 9 With respect to the embodiments according to FIGS. 8 and 9 is to be understood that also in these guide elements such as the rib 22 and / or the profile plates 24, as described above, are provided, however, in FIGS. 8 and 9 have not been shown for the sake of simplicity.
  • the arrangement of the probe is in these embodiments, as with reference to FIGS. 5 and 6 explained, provided.
  • Fig. 9 it is also conceivable to arrange the obstruction 16 "in the insert 34 so that the obstruction 16"'is not situated in the suction line 4 but in the adjoining pipeline 36. In this way, an even greater distance between the obstruction 16 'and receiving space 6 and the impeller disposed therein are created.
  • the guide elements for influencing the flow are, as shown in the figures, conveniently arranged on the side of the inner wall 26 of the suction nozzle 4, which is concavely curved toward the receiving space 6 and has the larger radius of curvature. In this area, a more favorable influence on the flow and damping of undesired turbulence or turbulence can be achieved.
  • the flow sensor is located in the suction nozzle 4.
  • it could be arranged accordingly in the discharge nozzle 12, in which case a rib 22 and / or profile plates 24 are then arranged in the discharge nozzle 12 in a corresponding manner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Claims (13)

  1. Groupe motopompe centrifuge, comprenant au moins une roue, une tubulure d'aspiration (4) située côté entrée de la roue et une tubulure de refoulement (12) située côté sortie de la roue,
    caractérisé en ce que,
    dans une portion de conduit formée par la tubulure d'aspiration (4) et/ou par la tubulure de refoulement (12), est disposé un capteur d'écoulement à effet vortex (16, 18, 20) et au moins un élément directeur (22, 24) conçu pour influer sur l'écoulement présent dans la portion de conduit, de façon à tenir le capteur à l'écart de turbulences perturbatrices qui affectent le résultat de la mesure réalisant le au moins un élément directeur sous la forme d'une nervure (22) faisant saillie vers l'intérieur à partir de la paroi intérieure (26) de la portion de conduit et/ou concevant un élément directeur en tant qu'au moins une plaque profilée (24) faisant saillie vers l'intérieur à partir de la paroi intérieure (26) de la portion de conduit, laquelle est orientée transversalement à la direction d'écoulement (S) d'un fluide à transporter.
  2. Groupe motopompe centrifuge selon la revendication 1, caractérisé en ce que le au moins un élément directeur (22, 24) est apte à stabiliser l'écoulement présent dans la portion de conduit.
  3. Groupe motopompe centrifuge selon la revendication 1 ou 2, caractérisé en ce que la nervure (22) s'étend le long de la paroi intérieure (26) de la portion de conduit dans la direction d'écoulement (5) d'un fluide à transporter.
  4. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce qu'un capteur de mesure (18) du capteur d'écoulement est disposé dans la nervure (22).
  5. Groupe motopompe centrifuge selon la revendication 4, caractérisé en ce que le capteur de mesure (18) présente deux surfaces réceptrices de pression (30) et est disposé dans la nervure (22) de telle sorte les deux surfaces réceptrices de pression (30) soient respectivement reliées à une face de la nervure (22) en vue de la sollicitation par pression.
  6. Groupe motopompe centrifuge selon la revendication 4 ou 5, caractérisé en ce qu'est réalisé dans la nervure (22) au moins un évidement destiné à recevoir le capteur de mesure (18).
  7. Groupe motopompe centrifuge selon l'une des revendications précédentes et l'une des revendications 4 à 8, caractérisé en ce que la plaque profilée (24) s'étend transversalement à la nervure (22) et est réalisée, de préférence, de manière symétrique au plan médian de la nervure (22).
  8. Groupe motopompe centrifuge selon la revendication 9, caractérisé en ce que la plaque profilée (24) s'étend, à partir de la paroi intérieure (26), plus loin vers l'intérieur de la portion de conduit que la nervure (22).
  9. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce que la plaque profilée (24) est inclinée à partir de la paroi intérieure (26) dans la direction d'écoulement (S) du fluide à transporter.
  10. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce que la au moins une plaque profilée (24) est disposée en aval d'un capteur de mesure (18, 20) du capteur d'écoulement dans la direction d'écoulement (S) du fluide à transporter.
  11. Groupe motopompe centrifuge selon l'une des revendications précedentes, caractérisé en ce que plusieurs plaques profilées (24) sont espacées les unes des autres dans la direction d'écoulement (S).
  12. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce que le capteur d'écoulement est disposé à l'extrémité de la portion de conduit éloignée de la roue, et, de préférence, une obstruction (16, 16', 16", 16"') du capteur d'écoulement, est située au niveau de l'extrémité de la tubulure d'aspiration (4) éloignée de la roue.
  13. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce qu'est prévu à l'extrémité libre de la tubulure d'aspiration (4), à l'intérieur de celle-ci, un insert (34) qui s'étend au-delà de l'extrémité libre de la tubulure d'aspiration (4) de façon à pouvoir pénétrer dans une tuyauterie (36) adjacente afin d'opérer un guidage optimisé de l'écoulement dans la région de raccordement de la tuyauterie (36) et de la tubulure d'aspiration (4).
EP08017263.8A 2008-10-01 2008-10-01 Agrégat de pompe centrifuge Active EP2172654B2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT08017263T ATE511606T1 (de) 2008-10-01 2008-10-01 Kreiselpumpenaggregat
EP08017263.8A EP2172654B2 (fr) 2008-10-01 2008-10-01 Agrégat de pompe centrifuge
PL08017263T PL2172654T5 (pl) 2008-10-01 2008-10-01 Agregat z pompą wirową
PCT/EP2009/005681 WO2010037444A1 (fr) 2008-10-01 2009-08-06 Ensemble pompe centrifuge
US13/122,236 US8858170B2 (en) 2008-10-01 2009-08-06 Centrifugal pump assembly
CN200980148331.7A CN102232147B (zh) 2008-10-01 2009-08-06 离心泵机组

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EP08017263.8A EP2172654B2 (fr) 2008-10-01 2008-10-01 Agrégat de pompe centrifuge

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EP2172654B1 EP2172654B1 (fr) 2011-06-01
EP2172654B2 true EP2172654B2 (fr) 2013-11-20

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WO2024012454A1 (fr) * 2022-07-12 2024-01-18 青岛三利智能动力有限公司 Pompe à double entraînement intelligente et système d'alimentation en eau

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DE2933904A1 (de) † 1979-08-22 1981-03-12 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Einlaufkruemmer.
US4418578A (en) † 1982-07-26 1983-12-06 Ford Motor Company Low noise vortex shedding fluid flow sensor
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Publication number Publication date
CN102232147B (zh) 2015-05-13
CN102232147A (zh) 2011-11-02
EP2172654A1 (fr) 2010-04-07
US20120128478A1 (en) 2012-05-24
PL2172654T5 (pl) 2014-04-30
WO2010037444A1 (fr) 2010-04-08
ATE511606T1 (de) 2011-06-15
PL2172654T3 (pl) 2011-10-31
US8858170B2 (en) 2014-10-14
EP2172654B1 (fr) 2011-06-01

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