EP2249033A2 - Egalisation du débit dans des pompes volumétriques oscillantes - Google Patents

Egalisation du débit dans des pompes volumétriques oscillantes Download PDF

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Publication number
EP2249033A2
EP2249033A2 EP10004530A EP10004530A EP2249033A2 EP 2249033 A2 EP2249033 A2 EP 2249033A2 EP 10004530 A EP10004530 A EP 10004530A EP 10004530 A EP10004530 A EP 10004530A EP 2249033 A2 EP2249033 A2 EP 2249033A2
Authority
EP
European Patent Office
Prior art keywords
flow
positive displacement
displacement pumps
oscillating
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
EP10004530A
Other languages
German (de)
English (en)
Other versions
EP2249033A3 (fr
EP2249033B1 (fr
Inventor
Matthias Sauter
Matthias Dörling
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.)
Lewa GmbH
Original Assignee
Lewa GmbH
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 Lewa GmbH filed Critical Lewa GmbH
Publication of EP2249033A2 publication Critical patent/EP2249033A2/fr
Publication of EP2249033A3 publication Critical patent/EP2249033A3/fr
Application granted granted Critical
Publication of EP2249033B1 publication Critical patent/EP2249033B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0041—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation by piston speed control
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons
    • F04B11/0058—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons with piston speed control
    • 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
    • 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
    • F04B49/20—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 by changing the driving speed

Definitions

  • the invention relates to a method for equalizing the flow rate in oscillating positive displacement pumps according to the preamble of claim 1.
  • the invention also relates to an apparatus for carrying out this method according to the preamble of claim 6.
  • the invention is therefore based on the object, the method of the generic type to eliminate the disadvantages described in such a way that it makes it possible to achieve a largely uniform or constant flow rate by means of simple constructive means with reasonable economic effort.
  • an apparatus for performing this method is to be created, which is easy to operate.
  • the inventive method for equalizing the flow rate in oscillating displacement pumps is based on the essential idea that the generation of the fluid flow in a delivery line by means of at least two oscillating displacement, whose drive motors are controlled so that the total flow generated in the delivery line largely uniform or constant is.
  • the displacement pumps are operated in a composite with each other without mechanical coupling.
  • the positive displacement pumps are operated synchronized electronically such that a virtually pulsation-free uniform flow rate (volume flow) is generated in the common delivery line.
  • the inventive method can be operated such that the drive motor of each positive displacement pump is changed in its rotational speed such that the superimposed flow rates of the positive displacement pumps give a substantially constant total flow.
  • the device according to the invention for carrying out the above-mentioned method is provided with at least two oscillating displacement pumps whose pressure line for superimposing the individual Delivery streams is connected to a common delivery line and each having a drive motor, which are operable without mechanical coupling in electronic synchronization to achieve a substantially uniform or constant sum flow.
  • the drive of each displacement pump is a highly dynamic drive.
  • This may be a servo motor, preferably a permanent-magnet three-phase synchronous servo motor.
  • the displacement pumps are diaphragm pumps.
  • FIG. 1 The drawing shows, for performing the method according to the invention in the illustrated embodiment, two oscillating positive displacement pumps in the form of diaphragm pumps 1, 2 are provided, the pressure lines 3, 4 are connected to a common feed line 5.
  • the mechanically uncoupled diaphragm pumps 1, 2 each have a drive motor 6 and 7, which is designed as a highly dynamic drive.
  • This is preferably a servo motor, in particular a permanent-magnet three-phase synchronous servo motor.
  • the drive motors 6, 7 of the two diaphragm pumps 1, 2 are operated by exact electronic synchronization such that a substantially uniform or constant sum flow in the common delivery line 5 can be achieved.
  • FIG Fig. 2 ad This procedure, which is operated by the method according to the invention, is illustrated by the individual diagrams in FIG Fig. 2 ad shown, in which the pump delivery is 100% each.
  • the pressure stroke of each diaphragm pump 1, 2 is shown, wherein the left half of the diagrams in each case the respective measured value course Pressure stroke of the diaphragm pump 1 represents, while the corresponding right half of the diagram shows the measured value course in dashed form during the pressure stroke of the diaphragm pump 2.
  • Diagram 2a shows the course of the piston travel over the time t in both diaphragm pumps 1, 2. Since this - in contrast to the prior art - due to the special operation of the drive motors 6, 7 of the two diaphragm pumps 1, 2 is a constant course, results also, how out Fig. 2b can be seen, a constant piston speed.
  • the diagrams according to Fig. 3 ac show different measurements of the diaphragm pump 1 (solid line) and the diaphragm pump 2 (dashed line), respectively apply over time t, the diaphragm pumps 1, 2 each have only a reduced flow rate of about 90 ° C.
  • the diagram shows according to Fig. 3a the fluid velocity applied over time t without compensation of the loss due to the "dead compression path hK" occurring at the beginning of the pressure stroke.
  • this loss of fluid velocity is extremely low compared to the prior art, so it is negligible.
  • the pump piston is brought after completion of the suction stroke in the position hK before the actual delivery stroke begins.
  • the piston travel then starts at hK, ie the fluid is displaced immediately in the pressure stroke.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP10004530.1A 2009-05-08 2010-04-29 Egalisation du débit dans des pompes volumétriques oscillantes Active EP2249033B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009020414A DE102009020414A1 (de) 2009-05-08 2009-05-08 Vergleichmäßigung des Förderstroms bei oszillierenden Verdrängerpumpen

Publications (3)

Publication Number Publication Date
EP2249033A2 true EP2249033A2 (fr) 2010-11-10
EP2249033A3 EP2249033A3 (fr) 2011-11-02
EP2249033B1 EP2249033B1 (fr) 2014-11-12

Family

ID=42278269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004530.1A Active EP2249033B1 (fr) 2009-05-08 2010-04-29 Egalisation du débit dans des pompes volumétriques oscillantes

Country Status (5)

Country Link
US (1) US20100284827A1 (fr)
EP (1) EP2249033B1 (fr)
JP (1) JP5567385B2 (fr)
DE (1) DE102009020414A1 (fr)
ES (1) ES2529678T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2949931A1 (fr) * 2014-05-30 2015-12-02 LEWA GmbH Pulsateur
RU2761258C1 (ru) * 2020-06-30 2021-12-06 Публичное акционерное общество "ОДК-Уфимское моторостроительное производственное объединение" (ПАО "ОДК-УМПО") Устройство выравнивания нагрузки

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011051028A1 (de) 2011-06-10 2012-12-13 Prominent Dosiertechnik Gmbh Membrandosierpumpe
JP6570846B2 (ja) * 2015-03-09 2019-09-04 アコマ医科工業株式会社 定量ポンプの駆動方法、定量ポンプの駆動装置、気化器および麻酔装置
CN109952432A (zh) * 2016-11-14 2019-06-28 帕加尼岩土工程设备有限责任公司 容积泵
TWI650284B (zh) * 2017-09-30 2019-02-11 Microjet Technology Co., Ltd 流體裝置之控制方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3546189C2 (fr) 1985-12-27 1990-01-04 Lewa Herbert Ott Gmbh + Co, 7250 Leonberg, De
DE19849785C1 (de) 1998-10-28 2000-03-16 Ott Kg Lewa Verfahren und Vorrichtung zur Förderstromeinstellung bei oszillierenden Verdrängerpumpen

Family Cites Families (20)

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US3917531A (en) * 1974-02-11 1975-11-04 Spectra Physics Flow rate feedback control chromatograph
US4359312A (en) * 1978-08-15 1982-11-16 Zumtobel Kg Reciprocating pump for the pulsation-free delivery of a liquid
US4321014A (en) * 1979-12-31 1982-03-23 Polaroid Corporation Constant flow pumping apparatus
DE3203722C2 (de) * 1982-02-04 1985-08-01 Gynkotek Gesellschaft für den Bau wissenschaftlich-technischer Geräte mbH, 8000 München Schubkolbenpumpe zur pulsationsarmen Förderung einer Flüssigkeit
CA1186166A (fr) * 1982-02-27 1985-04-30 Katsuhiko Saito Chromatographe a liquide
JPH0754114B2 (ja) * 1985-02-01 1995-06-07 日本電子株式会社 送液ポンプの制御方法
JPS63173866A (ja) * 1987-01-09 1988-07-18 Hitachi Ltd 無脈動ポンプの制御方式
JP2713401B2 (ja) * 1987-01-17 1998-02-16 日本分光株式会社 往復ポンプ
US4919595A (en) * 1987-03-03 1990-04-24 Beckman Instruments, Inc. Fluid delivery system with deficit flow compensation
JPS63255575A (ja) * 1987-04-10 1988-10-21 Yoshimoto Seisakusho:Kk ポンプ装置
JP2824575B2 (ja) * 1987-08-11 1998-11-11 株式会社日立製作所 低脈流送液ポンプ
JP2503804B2 (ja) * 1991-04-30 1996-06-05 株式会社島津製作所 液体ポンプ
DE4130295C2 (de) * 1991-09-12 1995-07-13 Ludwig Bluecher Fördereinrichtung
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
FR2726332B1 (fr) * 1994-10-26 1997-01-24 Francois Couillard Systeme de pompage a pistons delivrant des fluides avec un debit sensiblement constant
FI106705B (fi) * 1999-04-09 2001-03-30 Esa Kuismanen Menetelmä ja järjestely aineen pumppaamiseksi
JP2001254684A (ja) * 2000-03-10 2001-09-21 Gl Sciences Inc 送液装置
DE10104635A1 (de) * 2001-02-02 2002-10-02 Joma Hydromechanic Gmbh Verfahren zum Aufrechterhalten einer konstanten Ausgangsgröße einer Förderpumpe, z.B. ihres Fördervolumens, die von einer in ihrer Drehzahl variablen Antriebsvorrichtung angetrieben wird, sowie Vorrichtung zur Durchführung des Verfahrens
DE10134138A1 (de) * 2001-07-13 2003-02-06 Oranienburger Pumpen Verdichte Fluidmaschine mit zumindest zwei zusammengeschalteten Maschinen, insbesondere Verdichter, Gebläse, Pumpen u. dgl.
US6997683B2 (en) * 2003-01-10 2006-02-14 Teledyne Isco, Inc. High pressure reciprocating pump and control of the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3546189C2 (fr) 1985-12-27 1990-01-04 Lewa Herbert Ott Gmbh + Co, 7250 Leonberg, De
DE19849785C1 (de) 1998-10-28 2000-03-16 Ott Kg Lewa Verfahren und Vorrichtung zur Förderstromeinstellung bei oszillierenden Verdrängerpumpen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2949931A1 (fr) * 2014-05-30 2015-12-02 LEWA GmbH Pulsateur
RU2761258C1 (ru) * 2020-06-30 2021-12-06 Публичное акционерное общество "ОДК-Уфимское моторостроительное производственное объединение" (ПАО "ОДК-УМПО") Устройство выравнивания нагрузки

Also Published As

Publication number Publication date
US20100284827A1 (en) 2010-11-11
EP2249033A3 (fr) 2011-11-02
ES2529678T3 (es) 2015-02-24
EP2249033B1 (fr) 2014-11-12
JP5567385B2 (ja) 2014-08-06
DE102009020414A1 (de) 2010-11-11
JP2010261461A (ja) 2010-11-18

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