EP0864755B2 - Double pompe à fonctionnement séquentiel ou synchrone - Google Patents

Double pompe à fonctionnement séquentiel ou synchrone Download PDF

Info

Publication number
EP0864755B2
EP0864755B2 EP98104145A EP98104145A EP0864755B2 EP 0864755 B2 EP0864755 B2 EP 0864755B2 EP 98104145 A EP98104145 A EP 98104145A EP 98104145 A EP98104145 A EP 98104145A EP 0864755 B2 EP0864755 B2 EP 0864755B2
Authority
EP
European Patent Office
Prior art keywords
pump
supply flow
pumps
switched
speed
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
EP98104145A
Other languages
German (de)
English (en)
Other versions
EP0864755B1 (fr
EP0864755A3 (fr
EP0864755A2 (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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7823427&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0864755(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 Q kl at specifiable differential pressure between the Pumpenansaug- and the Pumpenauslouseite and a second pump switchable to the first pump for generating larger flow Q gr and one of the two pumps controlling pump control.
  • Double pumps are well known in the art and are used i.a. used in heating circuits to cover peak demand of the subsidized heating water can. Modern double pumps are controlled by changing the speed to a constant or predetermined variable end pressure.
  • Two control concepts are used for the double pumps.
  • the two pumps of the double pump are synchronized over the entire control range to cover the required flow rate, i. at the same speed, operated.
  • the second concept only one of the two pumps is initially used to cover the required flow rate. Once this pump has reached its maximum speed, the second pump is switched on and continuously upshifted to cover even larger flow rates, the first pump continues to run at maximum speed.
  • a method according to the preamble of claim 1 is known from a controller PMU 2000 in conjunction with pumps called UPE series 2000 Grundfos.
  • the object of the invention is to improve the efficiency of a conventional double pump without changing the structure of the double pump.
  • Such a controller has the advantage that the two pumps of the double pump promote almost in the entire delivery range closer to their respective optimum efficiency, so that thereby increases the overall efficiency of the double pump according to the invention.
  • Such an operation of the double pump has the further advantage that a good control accuracy can be achieved without a separate pressure sensor, only by detecting and evaluating the pump-internal parameters speed, current and absorbed power.
  • This control accuracy is ensured because the connection of the second pump falls within a range in which the power consumption increases steeply enough with increasing flow rate of the first pump, so that a change in performance is sufficiently accurately determined and thus at the achieved flow rate Q * the second pump can be switched on.
  • This is not guaranteed in known double pumps, which are operated by the second control concept, since in the range of maximum speed, the power curve is flat or falling and by monitoring the power consumption of the first pump, the connection point of the second pump can not be determined with sufficient accuracy.
  • the second pump is not switched off when the demand is not at the same flow rate Q *, in which it was previously switched on, so that an unstable operating state is avoided.
  • the so specified hysteresis prevents a permanent switching on and off of the second pump and a concomitant rapid wear of the double pump.
  • FIG. 1 shows a delivery-height flow diagram with marked pumps and load curves for the two known from the prior art control concepts.
  • FIG. 2 shows for a certain constant head, the power consumption of the two known from the prior art and explained above control concepts for double pumps. It can be clearly seen that the power required to achieve a certain flow rate Q for small flow rates in synchronous operation (first control concept) is greater than the load-dependent Zuschalt bride (second control concept), in which Reaching the maximum speed of the first pump, the second pump is connected.
  • the power curves of the two control concepts intersect with increasing flow rates at the flow rate Q *. With flow rates Q greater than Q *, the power consumption of the synchronous operation of the double pump is significantly lower than that of the connection operation when the maximum speed of the first pump is reached. Consequently, the performance curves coincide with very high flow rates when both pumps deliver at maximum speed.
  • the inventive connection of the second pump at the flow rate Q * is achieved that the power consumption P of the double pump respectively corresponds to the lowest curve above and below the flow rate Q * of the two control concepts.
  • FIG. 4 shows the power consumption of the first pump for a constant speed. It can be clearly seen that the curve shape for delivery flows Q greater than Q * flattening and even falling at even larger flow rates. If no external pressure sensor was used to determine the pressure difference between Pumpenansaug- and Pumpenauslouseite, but only the pump's internal parameters speed, power absorbed and power consumption observed so can not be determined by the up to the maximum flow flat or falling waveform of power consumption when the maximum flow rate of the pump is reached.

Landscapes

  • 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 (5)

  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 et 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*), caractérisé en ce que lors du raccordement, la commande de pompes abaisse la vitesse de rotation de la première pompe 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.
  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 diminue, 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 Qzu et est mise hors circuit pour un écoulement de refoulement Qab, avec Qzu > Qab.
  4. 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.
  5. 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
DE19710675 1997-03-14
DE19710675A DE19710675B8 (de) 1997-03-14 1997-03-14 Doppelpumpe mit Einzel- und Synchronbetrieb

Publications (4)

Publication Number Publication Date
EP0864755A2 EP0864755A2 (fr) 1998-09-16
EP0864755A3 EP0864755A3 (fr) 2000-11-29
EP0864755B1 EP0864755B1 (fr) 2003-08-13
EP0864755B2 true 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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014222962A1 (de) 2014-11-11 2016-05-12 Ksb Aktiengesellschaft Effizienter Betrieb von Mehrpumpenanlagen
DE102017223189A1 (de) 2017-12-19 2019-06-19 KSB SE & Co. KGaA Mehrpumpenanlage und Verfahren zu deren Betrieb

Families Citing this family (6)

* 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
WO2007095537A1 (fr) * 2006-02-13 2007-08-23 Ingersoll-Rand Company Systeme de compression a plusieurs etages et son procede d'actionnement
DE102010055841A1 (de) * 2010-12-23 2012-06-28 Wilo Se Verfahren zum Betrieb eines Doppelpumpen- oder Multipumpenaggregates
CA172776S (en) 2017-01-27 2017-10-23 S A Armstrong Ltd Control pump
CA2997110C (fr) 2017-01-27 2019-07-02 S.A. Armstrong Limited Module de pompe d'optimisation a double corps et rendement variable a la charge
US10844862B2 (en) 2017-06-30 2020-11-24 Taco, Inc. Self-sensing parallel control of pumps

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3225141A1 (de) † 1982-07-06 1984-02-16 Grundfos A/S, 8850 Bjerringbro Drehzahlgeregeltes pumpenaggregat
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

Family Cites Families (6)

* 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
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3225141A1 (de) † 1982-07-06 1984-02-16 Grundfos A/S, 8850 Bjerringbro Drehzahlgeregeltes pumpenaggregat
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014222962A1 (de) 2014-11-11 2016-05-12 Ksb Aktiengesellschaft Effizienter Betrieb von Mehrpumpenanlagen
DE102017223189A1 (de) 2017-12-19 2019-06-19 KSB SE & Co. KGaA Mehrpumpenanlage und Verfahren zu deren Betrieb
WO2019121753A1 (fr) 2017-12-19 2019-06-27 KSB SE & Co. KGaA Installation multi-pompes et procédé pour son fonctionnement

Also Published As

Publication number Publication date
DE59809242D1 (de) 2003-10-02
DE19710675B4 (de) 2012-01-12
DE19710675A1 (de) 1998-09-17
DE19710675B8 (de) 2012-03-29
EP0864755B1 (fr) 2003-08-13
EP0864755A3 (fr) 2000-11-29
EP0864755A2 (fr) 1998-09-16

Similar Documents

Publication Publication Date Title
DE69617207T2 (de) Steuersystem für eine flugzeugflüssigkeitspumpe
EP1896712B1 (fr) Procede de commande et de regulation pour un moteur a combustion interne equipe d'un systeme common rail
EP2995816A1 (fr) Procédé de surveillance et de commande d'un moteur électrique d'entraînement d'une pompe
EP0864755B2 (fr) Double pompe à fonctionnement séquentiel ou synchrone
EP2137811B1 (fr) Dispositif de commande pour postes de conversion dans un système de transport de courant continu à haute tension
EP3388677B1 (fr) Procédé de commande d'un compresseur à vis
DE4128390C1 (en) 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
DE3037780A1 (de) Verfahren und system zum regeln des betriebes einer anzapfdampfturbine
DE3608555A1 (de) Verfahren zur strombegrenzung eines elektromotors
EP2064806B1 (fr) Dispositif d'alimentation en courant électrique à correction du facteur de puissance
DE102021211175A1 (de) Verfahren zum Betreiben eines Elektromotors, Förderpumpe, Kraftfahrzeug mit einer derartigen Förderpumpe, Computerprogramm und computerlesbares Medium
EP1880096B1 (fr) Procede et dispositif de commande electrique d'une soupape au moyen d'un element de fermeture mecanique
EP3728856B1 (fr) Installation multi-pompes et procédé pour son fonctionnement
EP0832360A1 (fr) Pompe electro-hydraulique reglable
DE102016200112A1 (de) Vakuumpumpenantrieb mit Stern-Dreieck-Umschaltung
DE102011106824A1 (de) Verfahren zum Betrieb einer elektronisch kommutierten Kraftstoffpumpe
DE2436738C3 (de) Brennstoffregelvorrichtung für eine Gasturbinenanlage
WO2012007114A2 (fr) Groupe hydraulique
EP2028749A1 (fr) Dispositif d'entraînement pouvant être commandé
EP0587043A2 (fr) Procédé et arrangement pour contrôle et régulation d'un générateur de pression pour plusieurs utilisateurs différents et hydrauliques branchés en parallèle
EP0929925B1 (fr) Circuit pour commander un moteur avec un dispositif de reconnaissance de surcharge
EP2330304A1 (fr) Ensemble hydraulique
DE102010033346B3 (de) Verfahren zum Starten eines Elektromotors in einer hydraulisch betriebenen Arbeitsmaschine
DD218783A3 (de) Steuereinrichtung fuer eine warenabzugsvorrichtung an strickmaschinen, insbesondre rundstrickmaschinen
EP3714539A1 (fr) Convertisseur protégé contre les court-circuits et pourvu d'une commande de courant continu

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7F 04D 15/00 A, 7F 04D 15/02 B

17P Request for examination filed

Effective date: 20001103

AKX Designation fees paid

Free format text: DE FR GB IT

17Q First examination report despatched

Effective date: 20020710

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: WILO AG

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59809242

Country of ref document: DE

Date of ref document: 20031002

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

ET Fr: translation filed
PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: GRUNDFOS A/S

Effective date: 20040513

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLAH Information related to despatch of examination report in opposition + time limit modified

Free format text: ORIGINAL CODE: EPIDOSCORE2

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLAH Information related to despatch of examination report in opposition + time limit modified

Free format text: ORIGINAL CODE: EPIDOSCORE2

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20110316

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: DE

Ref legal event code: R102

Ref document number: 59809242

Country of ref document: DE

Effective date: 20110316

REG Reference to a national code

Ref country code: FR

Ref legal event code: RU

Effective date: 20120618

Ref country code: FR

Ref legal event code: D7

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20150226

Year of fee payment: 18

Ref country code: DE

Payment date: 20150305

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20150309

Year of fee payment: 18

Ref country code: GB

Payment date: 20150304

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59809242

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20160309

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160331

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160309

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160309