EP2469094A3 - Method for operating a double pump or multi pump assembly - Google Patents

Method for operating a double pump or multi pump assembly Download PDF

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Publication number
EP2469094A3
EP2469094A3 EP20110009716 EP11009716A EP2469094A3 EP 2469094 A3 EP2469094 A3 EP 2469094A3 EP 20110009716 EP20110009716 EP 20110009716 EP 11009716 A EP11009716 A EP 11009716A EP 2469094 A3 EP2469094 A3 EP 2469094A3
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EP
European Patent Office
Prior art keywords
pump
operating
pump unit
sync
pumps
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
EP20110009716
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German (de)
French (fr)
Other versions
EP2469094B1 (en
EP2469094A2 (en
Inventor
Jürgen Hübner
Christian Roos
Sergej Merkel
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 SE
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Publication date
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Publication of EP2469094A2 publication Critical patent/EP2469094A2/en
Publication of EP2469094A3 publication Critical patent/EP2469094A3/en
Application granted granted Critical
Publication of EP2469094B1 publication Critical patent/EP2469094B1/en
Active 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
    • 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

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

Abstract

Die Erfindung betrifft ein Pumpenaggregat (1) sowie ein Verfahren und ein Computerprogramm zum Betrieb des Pumpenaggregats (1), das wenigstens eine eine Grundlast bedienende erste Pumpe (2a) und wenigstens eine eine Spitzenlast bedienende zweiten Pumpe (2b) aufweist, die bedarfsweise zugeschaltet und parallel zu der zumindest einen ersten Pumpe (2a) betrieben wird, wobei das Pumpenaggregat (1) derart auf einer vorgegebenen Regelkennlinie (19, 39) geregelt wird, dass die aufgenommene Leistung minimal ist. Das Pumpenaggregat (1) wird in Abhängigkeit eines oberen und eines unteren Grenzwertes (n_o, n_u) einer Betriebsgröße (n_sync) entweder mit mindestens zwei Pumpen (2a, 2b) oder mit wenigstens einer ausgeschalteten Pumpe (2b) betrieben, wobei ausgehend von einem synchronen Betrieb (21) der Pumpen (2a, 2b) in einem Betriebspunkt (11, 13), in dem die Pumpen (2a, 2b) mit derselben Drehzahl (n_sync) und/ oder Leistung betrieben werden, in einem ersten Schritt (24a) der Wert zumindest einer Betriebsgröße (n_sync) des Pumpenaggregats (1) als Referenzwert (n_ref) abgespeichert wird, in einem zweiten Schritt (25) der von der zweiten Pumpe (2b) geförderte Volumenstrom reduziert wird, in einem dritten Schritt (26, 27) in Abhängigkeit der Reaktion der geregelten ersten Pumpe (2a) eine Zuordnung des Betriebspunktes (11, 13) zu einem Lastbereich (15, 16, 17) erfolgt und in einem vierten Schritt (31, 32a) der obere oder untere Grenzwert (n_o, n_u) durch den Referenzwert (n_ref) ersetzt wird.

Figure imgaf001
The invention relates to a pump unit (1) and a method and a computer program for operating the pump unit (1) having at least one base load first pump (2a) and at least one second load pump (2b) which switches on as required and is operated parallel to the at least one first pump (2a), wherein the pump unit (1) is controlled on a predetermined control characteristic (19, 39) such that the power absorbed is minimal. The pump unit (1) is operated as a function of an upper and a lower limit value (n_o, n_u) of an operating variable (n_sync) either with at least two pumps (2a, 2b) or with at least one switched-off pump (2b), starting from a synchronous Operation (21) of the pumps (2a, 2b) in an operating point (11, 13), in which the pumps (2a, 2b) are operated at the same speed (n_sync) and / or power, in a first step (24a) Value of at least one operating variable (n_sync) of the pump unit (1) as a reference value (n_ref) is stored, in a second step (25) of the second pump (2b) funded flow is reduced in a third step (26, 27) in Depending on the response of the controlled first pump (2a), an assignment of the operating point (11, 13) to a load range (15, 16, 17) takes place and in a fourth step (31, 32a) the upper or lower limit value (n_o, n_u) is replaced by the reference value (n_ref).
Figure imgaf001
EP11009716.9A 2010-12-23 2011-12-08 Method for operating a double pump or multi pump assembly Active EP2469094B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010055841 DE102010055841A1 (en) 2010-12-23 2010-12-23 Method for operating a double pump or multi-pump unit

Publications (3)

Publication Number Publication Date
EP2469094A2 EP2469094A2 (en) 2012-06-27
EP2469094A3 true EP2469094A3 (en) 2015-05-06
EP2469094B1 EP2469094B1 (en) 2016-10-19

Family

ID=45348985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11009716.9A Active EP2469094B1 (en) 2010-12-23 2011-12-08 Method for operating a double pump or multi pump assembly

Country Status (2)

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EP (1) EP2469094B1 (en)
DE (1) DE102010055841A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014040627A1 (en) * 2012-09-13 2014-03-20 Abb Technology Ag Device and method for operating parallel centrifugal pumps
DE102013007026A1 (en) * 2013-04-24 2014-10-30 Wilo Se Method for the optimized operation of a pumping station, in particular for wastewater
DE102014006258A1 (en) 2014-04-30 2015-11-05 Wilo Se Method for controlling a pump system and regulated pump system
DE102014006828A1 (en) * 2014-05-13 2015-11-19 Wilo Se Method for energy-optimal speed control of a pump set
DE102014222962A1 (en) 2014-11-11 2016-05-12 Ksb Aktiengesellschaft Efficient operation of multi-pump systems
DE102015011487A1 (en) * 2015-09-08 2017-03-09 Magnussen EMSR-Technik GmbH Method for reducing the energy consumption of a feed pump, which promotes water from a well into a pipeline network, as well as system for conveying water from at least one well into a pipeline network
EP3428452B1 (en) 2017-07-14 2022-08-24 Grundfos Holding A/S Measurement of a characteristic curve of one pump in a set of pumps operating in parallel
EP3428453B1 (en) * 2017-07-14 2023-06-07 Grundfos Holding A/S Multi-pump control keeping the head constant while ramping up or down a subset of the pumps
EP3428454B1 (en) * 2017-07-14 2020-01-08 Grundfos Holding A/S Determination of a zero-flow characteristic curve of a pump in a multi-pump system
DE102017223189A1 (en) * 2017-12-19 2019-06-19 KSB SE & Co. KGaA Multi-pump system and method for its operation
EP3940237B1 (en) * 2020-07-17 2022-08-24 Grundfos Holding A/S Multi-pump control system
CN113915117B (en) * 2021-10-20 2024-01-30 西安热工研究院有限公司 Effect evaluation method for changing electric water supply pump into steam pump
CN114279068A (en) * 2021-12-13 2022-04-05 广东芬尼克兹节能设备有限公司 Water pump switching control method and device, computer equipment and storage medium
DE102023107205A1 (en) 2023-03-22 2024-09-26 KSB SE & Co. KGaA Method for controlling a pump system having at least two hydraulically parallel operated centrifugal pumps, and multi-pump system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2616549A1 (en) * 1975-04-15 1976-10-21 Guinard Pompes CONTROL DEVICE
JPS56138478A (en) * 1980-03-29 1981-10-29 Toshiba Corp Detector of pump operation conditions
JPS59122798A (en) * 1982-12-28 1984-07-16 Fuji Facom Corp Operation of pump
DE19742799A1 (en) * 1997-09-27 1999-04-15 Klein Schanzlin & Becker Ag Automatic adjustment of the setting range of a pressure control loop in multi-pump systems
EP0864755B1 (en) * 1997-03-14 2003-08-13 Wilo Ag Double pump with sequential or synchronous operation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2756916C2 (en) * 1977-12-21 1985-09-26 Danfoss A/S, Nordborg Device for setting up the delivery rate of a waterworks pump arrangement
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
US6045332A (en) * 1998-05-08 2000-04-04 Celanese International Corporation Control system for multi-pump operation
DE19842565B4 (en) * 1998-09-03 2005-08-25 Ksb Ag Automatic determination of the PID controller parameters for a pressure control loop in multi-pump systems
EP2161455B1 (en) 2008-09-04 2018-05-30 Grundfos Management A/S Double pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2616549A1 (en) * 1975-04-15 1976-10-21 Guinard Pompes CONTROL DEVICE
JPS56138478A (en) * 1980-03-29 1981-10-29 Toshiba Corp Detector of pump operation conditions
JPS59122798A (en) * 1982-12-28 1984-07-16 Fuji Facom Corp Operation of pump
EP0864755B1 (en) * 1997-03-14 2003-08-13 Wilo Ag Double pump with sequential or synchronous operation
DE19742799A1 (en) * 1997-09-27 1999-04-15 Klein Schanzlin & Becker Ag Automatic adjustment of the setting range of a pressure control loop in multi-pump systems

Also Published As

Publication number Publication date
EP2469094B1 (en) 2016-10-19
DE102010055841A1 (en) 2012-06-28
EP2469094A2 (en) 2012-06-27

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