EP1614903A1 - Unité moteur pour entrainer une pompe centrifuge - Google Patents

Unité moteur pour entrainer une pompe centrifuge Download PDF

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Publication number
EP1614903A1
EP1614903A1 EP04015972A EP04015972A EP1614903A1 EP 1614903 A1 EP1614903 A1 EP 1614903A1 EP 04015972 A EP04015972 A EP 04015972A EP 04015972 A EP04015972 A EP 04015972A EP 1614903 A1 EP1614903 A1 EP 1614903A1
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EP
European Patent Office
Prior art keywords
pump
control
drive
pumps
drive assembly
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.)
Granted
Application number
EP04015972A
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German (de)
English (en)
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EP1614903B1 (fr
Inventor
Niels Jorgen Strom
Martin Byskov Skafsgaard
Troels Sorensen
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 AS
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Grundfos AS
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Application filed by Grundfos AS filed Critical Grundfos AS
Priority to EP04015972.5A priority Critical patent/EP1614903B1/fr
Publication of EP1614903A1 publication Critical patent/EP1614903A1/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
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
    • 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
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine

Definitions

  • the invention relates to a drive assembly for a centrifugal pump with the features specified in the preamble of claim 1.
  • Such Antriebsbauajien typically consist of an electric motor, which is preceded by an electronic speed controller, for example in the form of a frequency converter and a control electronics, which typically controls the driven by the drive unit centrifugal pump according to a designated control curve.
  • the control is often based solely on electrical variables of the engine, since then a structurally complex sensors within the pump is unnecessary and the entire control electronics can be made with the drive assembly and ready to be wired without the need for wiring between the drive unit and pump still cabling are.
  • double pumps In the case of pumps with multiple heads, in particular double pumps, it is typical to use two identical drive units, which are used either individually, together or alternately or as a replacement.
  • double pumps are known, for example, from EP 0 735 273 A1.
  • These double pumps use two drive units of the same type, which in principle drive the same pumps.
  • the two pumps have the same impellers and basically the same housing, however, in order to connect both pumps on the same side and to operate in the same direction, it is necessary that some adjustment of the wiring within the housing to the common discharge nozzle takes place. These lines have different course and arrangement. This means that the two centrifugal pumps of this double pump differ in their hydraulic properties.
  • the object of the present invention is to improve the possible uses of drive assemblies of the type mentioned in the introduction, in particular in order to avoid the aforementioned disadvantages in the case of a double pump with two drive units of the same type.
  • the basic idea of the present invention is to design the control electronics located in the drive unit for at least two centrifugal pumps differing in their hydraulic properties and then adjust them for the respective application to the just connected centrifugal pump, so that the control is adapted to the connected pump.
  • This has, as far as the possible applications of the drive assembly, the advantage that with one and the same drive assembly different centrifugal pumps can be operated and thus at least the drive unit diversity can be significantly reduced.
  • the solution according to the invention has the advantage that now both centrifugal pumps can be operated according to the resulting by their installation position hydraulic conditions.
  • control electronics for at least two, differing only in the form of the pump housing centrifugal pumps, so that drive assemblies with basically the same centrifugal pumps, as is typically the case with the above double pumps, can be operated optimally.
  • the parameters for centrifugal pumps differing in their hydraulic properties are stored within the control electronics; this can be done by the manufacturer, for example, by determining the parameters beforehand in the installation position and storing them in the control electronics.
  • these particular installation-dependent parameters can also be read in or be entered by an operator. For example, if two or more pump units with identical drive assemblies and identical connected centrifugal pumps are interconnected by individual tubing, then the different hydraulic characteristics resulting from this individual tubing can be entered, such as the tubing length, tubing cross section and / or number and angle of tubing bends of the respective associated pump set and based on these values, the control electronics is adjusted accordingly.
  • the adaptation of the control is advantageously carried out automatically after entering these values.
  • the invention does not necessarily assume that the hydraulic properties of the centrifugal pumps themselves differ, these may also relate to the wider environment, such as the piping in the context of the invention.
  • means for adjusting the control electronics for adapting the control to the connected centrifugal pump are provided in or on the drive assembly. It is particularly advantageous if these means are designed so that an automatic adjustment takes place. This can be done for example by means of a pump side arranged transponder in conjunction with an RFID reader (Radio Frequency Identification) in the drive unit.
  • RFID reader Radio Frequency Identification
  • the identification can be fully automatic and automatic, without additional pump-side power supply or cable connection, as the transponder is inductively fed by the RFID reader and then read by radio.
  • the adjustment can also be made by means of a remote control, be it that this takes place once the assembly of the pump in the factory or possibly also on site once by the fitter.
  • a preferably concealed switch for example, provided in the terminal box, with which the settings can be made to the drive assembly advantageous. It can also be provided for adjusting jumpers, as are typically known from computer technology, or other suitable measures.
  • plug-on control modules which, if several pumps are to be integrated in the control, are electrically connected to one another by control, typically by a cable interconnecting the two drive units or, if appropriate, several such cables.
  • the application of the present invention is particularly useful when the pump is preferably controlled sensorless and exclusively using the electrical parameters of the drive motor.
  • These electrical variables are available, for example, when using the current frequency converter technology on the motor side anyway, so that such a scheme is very cost-effective and can be implemented without sensors. Therefore, it is particularly advantageous if no pump-side sensor is provided, because then an electrical connection between the pump and drive assembly is not required.
  • Such electrical connections, in particular pump-side sensors are not only expensive to manufacture, but also error-prone in long-term operation.
  • the detection of the electrical variables of the motor sensorless are particularly useful when the pump is preferably controlled sensorless and exclusively using the electrical parameters of the drive motor.
  • the electronic control is adapted as closely as possible to the hydraulic conditions, namely because the actual value, be it the delivery pressure or the flow rate, not actually available, but only electrical values of Motors from which these values are derivable, are available, which is why static changes in the hydraulic system in these regulations can not be considered in principle.
  • the present invention is used for a multi-headed pump unit, in particular a double pump, which has at least two Antriebsbauajien with the features described above.
  • These drive units are typically connected to identical centrifugal pumps, which, however, as in a double pump usual, differ in their hydraulic properties due to the different mounting positions.
  • the regulations of the drive units of the double pump are adapted to their different hydraulic properties (installation conditions), so that optimum operation is ensured, regardless of whether both pumps are used together or individually, regardless of which pump is currently in use.
  • the invention is not limited to multi-headed pump units with the same pumps in different mounting position, as is typically the case with double pumps, but may also include different pump units, for example, those that differ from each other in the shape of the impeller and / or number of blades ,
  • the solution according to the invention can also be implemented by software in the case of existing pump units, in which case each drive unit is preferably assigned a control module which adjusts the electronic control according to the hydraulic properties of the connected pump.
  • a control module can be easily provided as a pluggable module within the terminal box, so that it can be attached by simply plugging in the connection of the pump at the designated location.
  • a corresponding color coding take place, which coincides with corresponding color code at the respective installation point, so that the parameters stored in the control electronics are activated by plugging the module.
  • control modules of both drive units are electrically connected to each other control, so that moreover, the regulations can still be linked together, be it to the effect that a synchronization of the aggregates occurs during simultaneous operation or an alternating operation to the most uniform possible Utilization of the individual units.
  • the double pump shown in the drawings corresponds, as far as the mechanical structure, the prior art. It has a pump housing 1, which at the bottom of a central suction port 2 and in alignment with the top of a discharge nozzle 3 has (inline pump).
  • the pump housing 1 is provided for connecting two Antriebsbautechniken 4, each having a, integrated in a housing electric motor 5, which is flanged on the front side of the pump housing 1. Both motors 5 are flanged parallel to the axis on the same side of the pump housing 1, which is why the pressure-side line within the pump housing 1 is formed differently for the same wheels and directions of rotation of the motors. While outgoing from the central suction port 2 approximately symmetrically to the suction port of the respective pump outgoing channels of the same length and the same cross-section, the pressure-side channel course as shown in Fig. 3.
  • the pressure channel 6 wraps around the axis of rotation 7 counterclockwise by about 270 °, and then open into a curved in the opposite direction by about 90 ° region, which forms the actual discharge nozzle 3.
  • the pressure channel 8 of the left pump wraps around the axis of rotation 7, although also counterclockwise by about 270 °, but then goes almost without curvature, but at least without change of direction, in the discharge nozzle 3 via.
  • the pressure channels 6 and 8 are separated by a switching flap 9, which switches flow-dependent and prevents backflow into the respective other channel.
  • the channel profile of the pressure channels 6 and 8 illustrates readily that even when using the same drive units 4 and impellers of the pumps, these combined in the pump housing 1 centrifugal pumps have different hydraulic properties.
  • the Antriebsbauticianen 4 each have a over half the outer circumference of the motor 5 Vietnameserechenden terminal box 10, which includes an electronic speed controller in the form of a frequency converter and a control electronics for the pump.
  • the control electronics operate sensorless, d. H.
  • the actual values of the pump required for the control are determined on the basis of electrical variables of the motor 5.
  • operating states result, which are represented by curves 11 and 12 in FIG. 5 are.
  • Both curves 11 and 12 not only differ from each other, but also from a conventional proportional pressure curve. This is due to the fact that the control of the drive assembly 4 is designed for a single pump and not a double pump with the comparatively long and partly under direction change pressure ducts 6 and 8.
  • the drive assembly 4 is provided with a control electronics, which is provided for the connection of pumps of different hydraulic properties.
  • a control electronics which is provided for the connection of pumps of different hydraulic properties.
  • the parameters for a pump with a single pump housing are stored in the drive units 4 in the control electronics, but also for a double pump of FIG. 3, in which case different parameters are stored, depending on whether the drive unit is mounted left or right , So the connected pump has a pressure channel 8 or a pressure channel 6.
  • the drive units 4 thus have a total of three sets of parameters, a first for a pump with a single housing, a second for a double pump for left-side mounting and a third for a double pump for right-hand mounting.
  • the first parameter set is activated, ie the drive unit 4 has a control electronics, which is set adjusted for a single pump. If this drive unit 4, as shown, are used for a double pump, then a corresponding control module 13 is to be inserted within the terminal box 10, wherein there are two types of control modules, which are color-coded according to the color coding on the pump housing 1.
  • the Insert control module 13 in the terminal box 10 of the drive unit 4 which has the color which is provided at the connection for the drive unit 4 on the pump housing 1.
  • a second or third set of parameters is activated in the electronic control, which takes into account the respective hydraulic installation situation.
  • the control modules are also connected to each other via an electrical line connection, so as to be able to communicate with each other, for example, to allow a synchronous operation or an alternate operation. Since now the control electronics of the drive unit 4 is adapted very precisely to the hydraulic conditions of the connected centrifugal pump, in particular the different channel courses 6 and 8 are taken into account, when turning off the same proportional pressure curve results in a curve 15 or 16 of, as Fig. 4th shows, is almost equal and, moreover, almost exactly the proportional pressure curve, ie the control curve, which is to drive the pump corresponds.
  • Figs. 4 and 5 are the maximum curves, that is, the curves of maximum hydraulic power. These differ significantly, as Figs. 4 and 5 illustrate significantly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
EP04015972.5A 2004-07-07 2004-07-07 Unité moteur pour entrainer une pompe centrifuge Expired - Lifetime EP1614903B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04015972.5A EP1614903B1 (fr) 2004-07-07 2004-07-07 Unité moteur pour entrainer une pompe centrifuge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04015972.5A EP1614903B1 (fr) 2004-07-07 2004-07-07 Unité moteur pour entrainer une pompe centrifuge

Publications (2)

Publication Number Publication Date
EP1614903A1 true EP1614903A1 (fr) 2006-01-11
EP1614903B1 EP1614903B1 (fr) 2019-05-22

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919357A1 (fr) * 2007-07-27 2009-01-30 Ksb Sas Soc Par Actions Simpli Pompe a puce electronique fixee a un dispositif tel qu'une poignee
EP2778423A1 (fr) * 2013-03-11 2014-09-17 Grundfos Holding A/S Agrégat de pompe centrifuge
CN104595675A (zh) * 2015-02-03 2015-05-06 广东技术师范学院 一种双腔均压式多头泵
EP2940309A1 (fr) 2014-04-30 2015-11-04 Wilo Se Procédé de réglage d'un système de pompe et système de pompe réglé
EP3242033A1 (fr) * 2016-12-30 2017-11-08 Grundfos Holding A/S Procédé de fonctionnement d'un groupe motopompe à commande électrique
EP3574218A4 (fr) * 2017-01-27 2021-01-20 S. A. Armstrong Limited Ensemble pompe d'optimisation de rendement à service variable et à double corps

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0735273A1 (fr) 1995-03-28 1996-10-02 WILO GmbH Pompe jumelle avec système de contrÔle principal
DE19702477A1 (de) * 1997-01-24 1998-07-30 Wilo Gmbh Doppelpumpe
EP0866228A2 (fr) * 1997-03-18 1998-09-23 Grundfos A/S Unité de pompage
DE10134138A1 (de) * 2001-07-13 2003-02-06 Oranienburger Pumpen Verdichte Fluidmaschine mit zumindest zwei zusammengeschalteten Maschinen, insbesondere Verdichter, Gebläse, Pumpen u. dgl.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128390C1 (en) * 1991-08-27 1992-12-24 Loewe Pumpenfabrik Gmbh, 2120 Lueneburg, De Rapid control appts. for fluid supply installation - has controller connected via digital communication line to pump motor regulators which provide setting signals for frequency converters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0735273A1 (fr) 1995-03-28 1996-10-02 WILO GmbH Pompe jumelle avec système de contrÔle principal
DE19702477A1 (de) * 1997-01-24 1998-07-30 Wilo Gmbh Doppelpumpe
EP0866228A2 (fr) * 1997-03-18 1998-09-23 Grundfos A/S Unité de pompage
DE10134138A1 (de) * 2001-07-13 2003-02-06 Oranienburger Pumpen Verdichte Fluidmaschine mit zumindest zwei zusammengeschalteten Maschinen, insbesondere Verdichter, Gebläse, Pumpen u. dgl.

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919357A1 (fr) * 2007-07-27 2009-01-30 Ksb Sas Soc Par Actions Simpli Pompe a puce electronique fixee a un dispositif tel qu'une poignee
CN105121857B (zh) * 2013-03-11 2018-04-03 格兰富控股联合股份公司 供热循环泵机组
EP2778423A1 (fr) * 2013-03-11 2014-09-17 Grundfos Holding A/S Agrégat de pompe centrifuge
WO2014139784A1 (fr) * 2013-03-11 2014-09-18 Grundfos Holding A/S Groupe motopompe centrifuge
CN105121857A (zh) * 2013-03-11 2015-12-02 格兰富控股联合股份公司 离心泵机组
EP2940309A1 (fr) 2014-04-30 2015-11-04 Wilo Se Procédé de réglage d'un système de pompe et système de pompe réglé
DE102014006258A1 (de) 2014-04-30 2015-11-05 Wilo Se Verfahren zur Regelung eines Pumpensystems und geregeltes Pumpensystem
EP2940309B1 (fr) 2014-04-30 2019-10-23 Wilo Se Procédé de réglage d'un système de pompe et système de pompe réglé
CN104595675A (zh) * 2015-02-03 2015-05-06 广东技术师范学院 一种双腔均压式多头泵
WO2018122025A1 (fr) * 2016-12-30 2018-07-05 Grundfos Holding A/S Procédé servant à faire fonctionner un groupe motopompe à commande électronique
EP3242033A1 (fr) * 2016-12-30 2017-11-08 Grundfos Holding A/S Procédé de fonctionnement d'un groupe motopompe à commande électrique
EP3574218A4 (fr) * 2017-01-27 2021-01-20 S. A. Armstrong Limited Ensemble pompe d'optimisation de rendement à service variable et à double corps
US11732719B2 (en) 2017-01-27 2023-08-22 S.A. Armstrong Limited Dual body variable duty performance optimizing pump unit
US11965512B2 (en) 2017-01-27 2024-04-23 S.A. Armstrong Limited Dual body variable duty performance optimizing pump unit

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