EP0864755B1 - Double pompe à fonctionnement séquentiel ou synchrone - Google Patents

Double pompe à fonctionnement séquentiel ou synchrone Download PDF

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Publication number
EP0864755B1
EP0864755B1 EP98104145A EP98104145A EP0864755B1 EP 0864755 B1 EP0864755 B1 EP 0864755B1 EP 98104145 A EP98104145 A EP 98104145A EP 98104145 A EP98104145 A EP 98104145A EP 0864755 B1 EP0864755 B1 EP 0864755B1
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EP
European Patent Office
Prior art keywords
pump
supply flow
pumps
speed
procedure
Prior art date
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Expired - Lifetime
Application number
EP98104145A
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German (de)
English (en)
Other versions
EP0864755A2 (fr
EP0864755B2 (fr
EP0864755A3 (fr
Inventor
Jürgen Resch
Jürgen Hübner
Hunnekuhl
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.)
Wilo SE
Original Assignee
Wilo AG
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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Application filed by Wilo AG filed Critical Wilo AG
Publication of EP0864755A2 publication Critical patent/EP0864755A2/fr
Publication of EP0864755A3 publication Critical patent/EP0864755A3/fr
Application granted granted Critical
Publication of EP0864755B1 publication Critical patent/EP0864755B1/fr
Publication of EP0864755B2 publication Critical patent/EP0864755B2/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
    • 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
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/029—Stopping of pumps, or operating valves, on occurrence of unwanted conditions for pumps operating in parallel

Definitions

  • the invention relates to a method for operating a double pump with a first pump for generating smaller flow rates Q kl at a predetermined differential pressure between the pump suction and the pump outlet side and a second pump that can be connected to the first pump to generate larger flow rates Q gr and one of the two pumps controlling pump control.
  • Double pumps are well known from the prior art and are u.a. in Heating circuits are used to cover demand peaks of the pumped heating water to be able to. Modern double pumps are switched on by changing the speed constant or predetermined variable final pressure regulated.
  • Two control concepts are used for the double pumps. At the first Control concept, the two pumps of the double pump over the entire Control area to cover the required flow synchronously, i.e. with the same Speed, operated. In the second concept, on the other hand, only one of the two is used first Pumps used to cover the required flow. Once this pump yours maximum speed has been reached, the second pump is switched on and is still covered larger flow rates continuously regulated, with the first pump still with maximum speed is running.
  • the object of the invention is to improve the efficiency of a conventional double pump to improve without building the To change double pump.
  • Figure 1 shows a head-flow diagram with drawn pumps and consumer characteristics for the two Control concepts known from the prior art.
  • Figure 2 shows the for a certain constant head Power consumption of the two from the prior art known and explained control concepts for Double pump. It can be clearly seen that the required Performance to achieve a specific flow rate Q at small flow rates in synchronous operation (first Control concept) is larger than the load-dependent one Switch-on mode (second control concept), in which after The second pump reaches the maximum speed of the first pump Pump is switched on.
  • the performance curves of the two Control concepts intersect as they grow Flow rates at flow rate Q *. With flow rates Q larger Q * is the power consumption of the synchronous operation of the Double pump significantly lower than that of the start-up mode The maximum speed of the first pump is reached.
  • the Performance curves consequently coincide with very large ones Flow rates when both pumps are at maximum speed promote.
  • Flow rate Q * is achieved that the power consumption P of Double pump up and down the lowest curve below the flow rate Q * of the two control concepts equivalent.
  • the second pump is not switched on at the same flow rate as the switching off.
  • the flow rate Q must be selected to generate a hysteresis greater than the shutdown flow rate Q ab .
  • Figure 4 shows the power consumption of the first pump for a constant speed. It can be clearly seen that the Curve curve for flow rates Q greater than Q * flattened and at even larger flow rates is even falling. Anyn't external pressure sensor to determine the pressure difference between Pump suction and pump outlet side used, but would only the pump's internal speed parameters, power consumption and current consumption observed, so through the flat or falling up to the maximum flow Power consumption curve not determined with certainty when the maximum flow rate of the pump is reached.

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

Claims (6)

  1. Procédé d'exploitation d'une pompe double avec une première pompe pour engendrer des écoulements de refoulement Qkl plus faibles pour une pression différentielle prédéfinissable entre le côté d'aspiration de la pompe et le côté de sortie de la pompe et une seconde pompe pouvant être raccordée à la première pompe pour engendrer des écoulements de refoulement Qgr plus grands et une commande de pompes commandant les deux pompes,
    caractérisé en ce que
    la commande de pompes augmente continuellement la vitesse de rotation de la première pompe jusqu'à l'atteinte d'un écoulement de refoulement Q* déterminé, la seconde pompe étant hors circuit jusqu'à l'atteinte de l'écoulement de refoulement Q* déterminé et
    que la commande de pompes raccorde la seconde pompe à la première pompe lors de l'atteinte de l'écoulement de refoulement Q* déterminé et les deux pompes refoulent à la même vitesse de rotation pour tous les écoulements de refoulement Q > = Q* (Q supérieur ou égal à Q*).
  2. Procédé selon la revendication 1,
    caractérisé en ce que, en partant d'un écoulement de refoulement Q > Q* (Q supérieur à Q*), la commande de pompe met la seconde pompe hors circuit, pour une demande qui diminué, aussitôt que l'écoulement de refoulement Q engendré par les deux pompes est approximativement égal à Q*.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que la seconde pompe est raccordée pour un écoulement de refoulement Q*zu et est mise hors circuit pour un écoulement de refoulement Q*ab, avec Q*zu > Q*ab.
  4. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que, lors du raccordement, la commande de pompes abaisse la vitesse de rotation à la vitesse de rotation de la seconde pompe de telle manière que l'écoulement de refoulement refoulé Q*zu par la première pompe seule avant le raccordement de la seconde pompe est refoulé, après le raccordement, ensemble dans les mêmes proportions par les deux pompes.
  5. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que, lors de la mise hors circuit de la seconde pompe, la commande de pompes augmente la vitesse de rotation de la première pompe de telle manière que l'écoulement de refoulement refoulé par la première pompe est égal à l'écoulement de refoulement refoulé par les deux pompes ensemble avant la mise hors circuit de la seconde pompe.
  6. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que l'écoulement de refoulement Q refoulé par la pompe double peut être déterminé au moyen des paramètres internes aux pompes, vitesse de rotation, consommation de courant et puissance consommée.
EP98104145A 1997-03-14 1998-03-09 Double pompe à fonctionnement séquentiel ou synchrone Expired - Lifetime EP0864755B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19710675A DE19710675B8 (de) 1997-03-14 1997-03-14 Doppelpumpe mit Einzel- und Synchronbetrieb
DE19710675 1997-03-14

Publications (4)

Publication Number Publication Date
EP0864755A2 EP0864755A2 (fr) 1998-09-16
EP0864755A3 EP0864755A3 (fr) 2000-11-29
EP0864755B1 true EP0864755B1 (fr) 2003-08-13
EP0864755B2 EP0864755B2 (fr) 2011-03-16

Family

ID=7823427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98104145A Expired - Lifetime EP0864755B2 (fr) 1997-03-14 1998-03-09 Double pompe à fonctionnement séquentiel ou synchrone

Country Status (2)

Country Link
EP (1) EP0864755B2 (fr)
DE (2) DE19710675B8 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2469094A2 (fr) 2010-12-23 2012-06-27 Wilo Se Procédé de fonctionnement d'un agrégat de pompes doubles ou multipompes
USD834068S1 (en) 2017-01-27 2018-11-20 S.A. Armstrong Limited Control pump
RU2740387C1 (ru) * 2017-12-19 2021-01-13 Ксб Се & Ко. Кгаа Многонасосная установка и способ ее эксплуатации
US11732719B2 (en) 2017-01-27 2023-08-22 S.A. Armstrong Limited Dual body variable duty performance optimizing pump unit

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19958829C1 (de) 1999-11-30 2001-08-02 Mannesmann Ag Brennstoffzellensystem mit einer Vorrichtung zum Zuleiten von Brennstoff
US20070189905A1 (en) * 2006-02-13 2007-08-16 Ingersoll-Rand Company Multi-stage compression system and method of operating the same
DE102014222962A1 (de) 2014-11-11 2016-05-12 Ksb Aktiengesellschaft Effizienter Betrieb von Mehrpumpenanlagen
EP3421805A1 (fr) * 2017-06-30 2019-01-02 Taco, Inc. Pompes de commande parallèle à auto-détection

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726606A (en) * 1971-11-19 1973-04-10 A Peters Sump apparatus
US3970413A (en) * 1972-01-24 1976-07-20 Francois Duveau Fluid distribution apparatus and method
US3775025A (en) * 1972-02-02 1973-11-27 Maher Corp Constant pressure pumping unit
DE3225141C2 (de) † 1982-07-06 1984-12-20 Grundfos A/S, Bjerringbro Drehzahlgeregeltes Pumpenaggregat
DE3238020A1 (de) * 1982-10-13 1984-04-19 Linde Ag, 6200 Wiesbaden Vorrichtung zum foerdern einer fluessigkeit
DE3918246A1 (de) * 1989-06-05 1990-12-06 Eggs Elektrotechnik Druckerhoehungseinrichtung
GB2253245B (en) * 1991-02-28 1994-10-19 Hamworthy Heating Ltd Flow related control means for a pump
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

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2469094A2 (fr) 2010-12-23 2012-06-27 Wilo Se Procédé de fonctionnement d'un agrégat de pompes doubles ou multipompes
DE102010055841A1 (de) 2010-12-23 2012-06-28 Wilo Se Verfahren zum Betrieb eines Doppelpumpen- oder Multipumpenaggregates
EP2469094A3 (fr) * 2010-12-23 2015-05-06 Wilo Se Procédé de fonctionnement d'un agrégat de pompes doubles ou multipompes
USD834068S1 (en) 2017-01-27 2018-11-20 S.A. Armstrong Limited Control pump
USD839313S1 (en) 2017-01-27 2019-01-29 S.A. Armstrong Limited Control pump
USD839314S1 (en) 2017-01-27 2019-01-29 S.A. Armstrong Limited Control pump
USD839922S1 (en) 2017-01-27 2019-02-05 S.A. Armstrong Limited Control pump
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
RU2740387C1 (ru) * 2017-12-19 2021-01-13 Ксб Се & Ко. Кгаа Многонасосная установка и способ ее эксплуатации

Also Published As

Publication number Publication date
DE19710675B4 (de) 2012-01-12
EP0864755A2 (fr) 1998-09-16
EP0864755B2 (fr) 2011-03-16
DE59809242D1 (de) 2003-10-02
DE19710675B8 (de) 2012-03-29
DE19710675A1 (de) 1998-09-17
EP0864755A3 (fr) 2000-11-29

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