EP1055071B1 - Dispositif de reglage d'une pompe a membrane - Google Patents

Dispositif de reglage d'une pompe a membrane Download PDF

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Publication number
EP1055071B1
EP1055071B1 EP99950623A EP99950623A EP1055071B1 EP 1055071 B1 EP1055071 B1 EP 1055071B1 EP 99950623 A EP99950623 A EP 99950623A EP 99950623 A EP99950623 A EP 99950623A EP 1055071 B1 EP1055071 B1 EP 1055071B1
Authority
EP
European Patent Office
Prior art keywords
signal
frequency converter
actual
speed
pump
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.)
Expired - Lifetime
Application number
EP99950623A
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German (de)
English (en)
Other versions
EP1055071A1 (fr
Inventor
Goerdt Abel
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.)
Abel GmbH and Co KG
Original Assignee
Abel GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Abel GmbH and Co KG filed Critical Abel GmbH and Co KG
Publication of EP1055071A1 publication Critical patent/EP1055071A1/fr
Application granted granted Critical
Publication of EP1055071B1 publication Critical patent/EP1055071B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0207—Torque
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2207/00—External parameters
    • F04B2207/04—Settings
    • F04B2207/044—Settings of the rotational speed of the driving motor

Definitions

  • the invention relates to a control device for a diaphragm pump according to claim 1.
  • Diaphragm pumps are used in a variety of ways. They are either mechanical or operated hydraulically. They are used, for example, to feed filter presses or similar consumers, such as B. Spray tower loads and the same.
  • the drive motor for example a three-phase motor, to operate via a frequency converter and the adaptation of the Flow rate and pump pressure depending on the measured Pressure.
  • the line between the pump and filter press assigned a pressure transmitter, its output signal is given to a programmable logic controller.
  • a programmable logic controller assigns the corresponding control signal for the Frequency converter for adapting the speed of the drive motor to the Pressure ratios by changing the output frequency of the converter.
  • Programmable logic controllers such as those used for such speed controls are required are relatively expensive.
  • the invention has for its object a control device for a To create diaphragm pump, which with a minimal apparatus Effort works.
  • An electric drive motor in particular a three-phase asynchronous motor, drives the diaphragm pump.
  • the drive motor is over one in its Frequency variable frequency converter supplied, which in turn with connected to the network, for example a 50 or 60 Hz network.
  • the frequency converter has an analog output at which a signal is present, for example a current that is representative of the respective motor torque.
  • a speed setpoint generator is also provided, which is not specifies a constant speed value, but a setpoint curve, which in Speed setpoint generator is saved.
  • the curve consists of a constant branch that corresponds to a maximum speed. Since the Output of the frequency converter via an inverter to the input of the Is given a small signal (engine torque) at the output to a large signal (engine speed) at the input of the speed setpoint generator. In other words, with relatively small ones
  • the speed setpoint generator gives a maximum speed value in front. This may well be higher than, for example, one like it is reached at 50 or 60 Hertz. A speed value can even be specified which corresponds, for example, to a frequency of 130 Hz.
  • the descending curve is followed to a minimum speed, the is then kept constant, for example at a value at which the Electric motor just runs smoothly. For example, this corresponds to one Speed of 2.0 rpm.
  • the device according to the invention also contains an attenuator. This ensures that those that inevitably occur with a diaphragm pump periodic fluctuations of the actual signal are damped so far that a processable signal is obtained.
  • the device according to the invention has the advantage that it is a conventional one Frequency converter can be used only minimally by appropriate Circuit parts must be supplemented. External control and regulating devices are not required. In particular, a pressure sensor completely cease to exist for regulatory purposes. In practice it has pointed out that it is easily possible with the invention, proportional to the sludge pressure building up in the filter press React torque of the engine.
  • a diaphragm pump 18 is shown by a three-phase motor 16 is driven.
  • the three-phase motor 16 is via a frequency converter 21 connected to the mains.
  • the frequency of the Motors can be changed between 2 Hz and 130 Hz.
  • the one in an inverter 20 determined motor currents are determined and appear an analog output 22 as actual signals for the torque of the motor 16.
  • the signal is a current signal that ranges between 0 and 21 mA. Current 0 means infinitely small torque and maximum current means maximum torque.
  • the signal Since the pump generates a swelling pressure, the signal is at the output 22 swelling accordingly.
  • An attenuator 23 ensures a corresponding Uniformity of the actual signal.
  • the attenuation of the actual signal is preferably done with a filter time constant, for example 8 Seconds. At the same time, this constant can be used to adapt to the respective pump size can be reached.
  • the actual signal is sent from output 22 via line 24 to the input given an inverter 28, which in turn with a speed setpoint 30 is connected.
  • a frequency converter 21 Speed controller is integrated, the speed according to the speed setpoint regulates so that the pump is driven at the required speed becomes.
  • a controller is, for example, a PID controller.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

L'invention concerne un dispositif de réglage d'une pompe à membrane destiné à l'alimentation du filtre-presse ou à des consommateurs équivalents. Ce dispositif comprend un moteur triphasé électrique qui est destiné à l'entraînement de la pompe et qui est relié au réseau d'alimentation par un convertisseur de fréquence de fréquence variable, lequel présente une sortie analogique où apparaît un signal réel correspondant au couple moteur respectif. Ce dispositif comprend également un capteur de consigne de vitesse de rotation à l'entrée duquel un signal réel est appliqué via un inverseur et dans lequel une courbe établissant une relation entre le couple moteur et le régime est mémorisée, de telle façon que pour de faibles valeurs réelles, la courbe de vitesse de rotation suit une valeur constante maximale et, après avoir atteint une valeur prédéterminée du signal réel, elle chute progressivement à une valeur minimale. Ce dispositif comprend enfin un étage d'amortissement pour le signal réel.

Claims (5)

  1. Dispositif de régulation pour une pompe à membrane pour l'alimentation de filtres-presses, ou d'utilisateurs analogues, comportant
    un convertisseur de fréquence,
    un moteur d'entraínement électrique à courant alternatif (16) pour la pompe (18), qui est relié au réseau d'alimentation par l'intermédiaire du convertisseur de fréquence (20) dont la fréquence est modifiable, le convertisseur de fréquence présentant une sortie (22) analogique, sur laquelle apparaít un signal instantané correspondant à chaque couple concerné du moteur,
    un générateur de valeur de consigne de vitesse de rotation (30), sur l'entrée duquel est délivré le signal instantané par l'intermédiaire d'un inverseur (28), et dans lequel est mise en mémoire une courbe de consigne établissant la dépendance entre le couple moteur et la vitesse de rotation, de telle façon que, si la valeur du signal instantané est inférieure à une valeur limite, la vitesse de rotation présente une valeur maximale constante (nmax) et, si la valeur limite est atteinte lorsque la valeur du signal instantané devient plus grande, la vitesse de rotation chute graduellement à une vitesse de rotation minimale (nmin), et
    un étage (23) d'amortissement pour le signal instantané.
  2. Dispositif suivant la revendication 1, caractérisé en ce que la partie descendante (10) de la courbe est une droite.
  3. Dispositif suivant la revendication 1 ou 2, caractérisé en ce que, dans le générateur de valeur de consigne de vitesse de rotation (30), une valeur inférieure de la vitesse de rotation (nmin) est mise en mémoire, et le couple moteur reste constant quand la valeur minimale (nmin) de la vitesse de rotation est atteinte.
  4. Dispositif suivant l'une des revendications 1 à 3, caractérisé en ce que la valeur maximale (nmax) de la vitesse de rotation correspond à une fréquence de sortie du convertisseur de fréquence (20), qui est située au-dessus de la fréquence du réseau.
  5. Dispositif suivant l'une des revendications 1 à 4, caractérisé en ce que la courbe (9, 10) peut être programmée et peut être ajustée à chaque utilisateur concerné pour la pompe.
EP99950623A 1998-12-09 1999-10-05 Dispositif de reglage d'une pompe a membrane Expired - Lifetime EP1055071B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29821910U DE29821910U1 (de) 1998-12-09 1998-12-09 Regelvorrichtung für eine Membranpumpe
DE29821910U 1998-12-09
PCT/EP1999/007399 WO2000034659A1 (fr) 1998-12-09 1999-10-05 Dispositif de reglage d'une pompe a membrane

Publications (2)

Publication Number Publication Date
EP1055071A1 EP1055071A1 (fr) 2000-11-29
EP1055071B1 true EP1055071B1 (fr) 2004-09-15

Family

ID=8066385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99950623A Expired - Lifetime EP1055071B1 (fr) 1998-12-09 1999-10-05 Dispositif de reglage d'une pompe a membrane

Country Status (6)

Country Link
US (1) US6344722B1 (fr)
EP (1) EP1055071B1 (fr)
JP (1) JP2002531774A (fr)
DE (2) DE29821910U1 (fr)
ES (1) ES2226450T3 (fr)
WO (1) WO2000034659A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7273904B2 (en) * 2002-10-03 2007-09-25 The Board Of Trustees Of The University Of Arkansas Nanocrystals in ligand boxes exhibiting enhanced chemical, photochemical, and thermal stability, and methods of making the same
US8017409B2 (en) 2009-05-29 2011-09-13 Ecolab Usa Inc. Microflow analytical system
DE102010003218A1 (de) * 2010-03-24 2011-09-29 Prominent Dosiertechnik Gmbh Verfahren zum Steuern und/oder Regeln einer Dosierpumpe
US10451761B2 (en) * 2015-02-27 2019-10-22 Halliburton Energy Services, Inc. Ultrasound color flow imaging for oil field applications
US10351488B2 (en) 2016-08-02 2019-07-16 Exxonmobil Chemical Patents Inc. Unsaturated polyalpha-olefin materials
US11767840B2 (en) 2021-01-25 2023-09-26 Ingersoll-Rand Industrial U.S. Diaphragm pump

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063140A (en) * 1976-02-05 1977-12-13 Rockwell International Corporation Method and apparatus for limiting position servo authority
GB2101355B (en) * 1981-04-30 1985-01-16 Rotork Controls Control of valve actuator
JPH0210796U (fr) * 1988-06-28 1990-01-23
US4971522A (en) 1989-05-11 1990-11-20 Butlin Duncan M Control system and method for AC motor driven cyclic load
DE4032876A1 (de) 1990-10-17 1992-04-23 Teves Gmbh Alfred Elektromotorisch angetriebene hydraulische pumpe
US5155422A (en) * 1991-03-28 1992-10-13 Digital Equipment Corporation Self-tuning adaptive bandwidth regulator
CA2171716C (fr) * 1993-09-27 1999-03-23 James W. Livingston Systeme de pompage a debit mesure dote d'un systeme de compensation de charge et procede prevu a cet effet
DE4335403C1 (de) 1993-10-18 1994-12-15 Karl Hehl Hydraulikeinrichtung
US5668457A (en) 1995-06-30 1997-09-16 Martin Marietta Corporation Variable-frequency AC induction motor controller
US5883489A (en) 1996-09-27 1999-03-16 General Electric Company High speed deep well pump for residential use
JP3997318B2 (ja) * 1998-02-16 2007-10-24 株式会社サタコ ポンプの制御方法及び制御装置

Also Published As

Publication number Publication date
WO2000034659A1 (fr) 2000-06-15
EP1055071A1 (fr) 2000-11-29
JP2002531774A (ja) 2002-09-24
US6344722B1 (en) 2002-02-05
DE29821910U1 (de) 1999-02-04
ES2226450T3 (es) 2005-03-16
DE59910519D1 (de) 2004-10-21

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