EP2249033A2 - Egalisation du débit dans des pompes volumétriques oscillantes - Google Patents
Egalisation du débit dans des pompes volumétriques oscillantes Download PDFInfo
- 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
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 230000010349 pulsation Effects 0.000 description 6
- 230000002411 adverse Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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)
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)
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)
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 |
WO2018087376A1 (fr) * | 2016-11-14 | 2018-05-17 | Pagani Geotechnical Equipment S.R.L. | Pompe volumétrique |
TWI650284B (zh) * | 2017-09-30 | 2019-02-11 | Microjet Technology Co., Ltd | 流體裝置之控制方法 |
Citations (2)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
ATE166702T1 (de) * | 1993-09-27 | 1998-06-15 | Unilever Nv | Dosier-pumpsystem und verfahren mit lastenkompensation |
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 |
-
2009
- 2009-05-08 DE DE102009020414A patent/DE102009020414A1/de not_active Ceased
-
2010
- 2010-04-29 ES ES10004530.1T patent/ES2529678T3/es active Active
- 2010-04-29 EP EP10004530.1A patent/EP2249033B1/fr active Active
- 2010-05-06 US US12/775,191 patent/US20100284827A1/en not_active Abandoned
- 2010-05-10 JP JP2010107949A patent/JP5567385B2/ja active Active
Patent Citations (2)
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)
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 |
---|---|
JP5567385B2 (ja) | 2014-08-06 |
US20100284827A1 (en) | 2010-11-11 |
DE102009020414A1 (de) | 2010-11-11 |
EP2249033B1 (fr) | 2014-11-12 |
JP2010261461A (ja) | 2010-11-18 |
EP2249033A3 (fr) | 2011-11-02 |
ES2529678T3 (es) | 2015-02-24 |
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