EP0379718A2 - Dispositif et méthode pour déplacer des fluides - Google Patents

Dispositif et méthode pour déplacer des fluides Download PDF

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Publication number
EP0379718A2
EP0379718A2 EP89123724A EP89123724A EP0379718A2 EP 0379718 A2 EP0379718 A2 EP 0379718A2 EP 89123724 A EP89123724 A EP 89123724A EP 89123724 A EP89123724 A EP 89123724A EP 0379718 A2 EP0379718 A2 EP 0379718A2
Authority
EP
European Patent Office
Prior art keywords
pump
pulsation
line
delivery line
valve
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.)
Withdrawn
Application number
EP89123724A
Other languages
German (de)
English (en)
Other versions
EP0379718A3 (fr
Inventor
Joachim Dipl.-Ing. Wegener
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.)
Allweiler GmbH
Original Assignee
Allweiler 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
Application filed by Allweiler AG filed Critical Allweiler AG
Publication of EP0379718A2 publication Critical patent/EP0379718A2/fr
Publication of EP0379718A3 publication Critical patent/EP0379718A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/008—Reduction of noise or vibration

Definitions

  • the invention relates to a device and a method for moving flow media, in particular liquids, in a delivery line by means of a pump.
  • the inventor has set himself the goal of reducing the pressure differences in the pump pulsation.
  • Active damping of the pressure pulsation is achieved by generating a counter-pressure pulsation of the same size, but offset by 180 ° C; the resulting pulsation is kept as small as possible.
  • the pressure peaks of the pressure pulsation are cut off by a piezo-controlled valve.
  • Flow medium is brought from a container 10 to a consumer 16 by a pump 12 through a delivery line 14.
  • the pump 12 is followed by a branch line 18 of the delivery line 14, which leads to a piezo back pressure generator 20 in FIG. 1. This is followed via electrical lines 22, 23, a controller 24 to which a transducer 26 with an electrical output signal connects. After the latter, the line 18 a leads back to the delivery line 14.
  • FIG. 2 shows the pressure difference .DELTA.p over time t in pump pulsation A and back pressure pulsation B of the piezo back pressure generator 20.
  • the resulting pulsation is designated by C.
  • 1, 2 illustrate the active damping of the pressure pulsation A by generating a counter-pressure pulsation B of the same size but offset by 180 °, so that the resulting pulsation C is kept as small as possible.
  • the back pressure pulsation B is generated with the aid of the piezo-controlled element 20.
  • the branch line 18 leads to a valve 21 which is controlled by a piezo element and which is connected to a reservoir 11.
  • the pump pulsation a is reduced by cutting off pressure peaks through that piezo-controlled valve 21.
  • the area y is that without the use of the valve 21, which produces the described effect in the area Z.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
EP19890123724 1988-12-28 1989-12-22 Dispositif et méthode pour déplacer des fluides Withdrawn EP0379718A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883844059 DE3844059A1 (de) 1988-12-28 1988-12-28 Vorrichtung und verfahren zum bewegen von stroemungsmedien
DE3844059 1988-12-28

Publications (2)

Publication Number Publication Date
EP0379718A2 true EP0379718A2 (fr) 1990-08-01
EP0379718A3 EP0379718A3 (fr) 1990-11-22

Family

ID=6370367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890123724 Withdrawn EP0379718A3 (fr) 1988-12-28 1989-12-22 Dispositif et méthode pour déplacer des fluides

Country Status (2)

Country Link
EP (1) EP0379718A3 (fr)
DE (1) DE3844059A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995026470A1 (fr) * 1994-03-28 1995-10-05 Robert Bosch Gmbh Pompe electro-hydraulique reglable
DE19706635A1 (de) * 1997-02-20 1998-09-03 Zahnradfabrik Friedrichshafen Vorrichtung zur Druckpulsationsdämpfung bei einer Pumpe
WO2010063664A1 (fr) * 2008-12-05 2010-06-10 Siemens Vai Metals Technologies Gmbh & Co Procédé et dispositif pour la réduction semi-active des fluctuations de la pression dans un système hydraulique
WO2010063661A3 (fr) * 2008-12-05 2010-07-29 Siemens Vai Metals Technologies Gmbh & Co Procédé et dispositif pour supprimer activement les fluctuations de pression dans un système hydraulique
WO2014151420A3 (fr) * 2013-03-15 2015-03-05 Lord Corporation Normalisateur d'écoulement de fluide

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4302977A1 (de) * 1993-02-03 1994-03-31 Bosch Gmbh Robert Hydraulikanlage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2217020A1 (de) * 1972-04-08 1973-10-25 Bran & Luebbe Verfahren und vorrichtung zur pulsationsarmen dosierung mehrerer fluessigkeitskomponenten einer mischung
DE3007116C2 (de) * 1980-02-26 1986-11-20 Walter Hofmann, Maschinenfabrik, 2084 Rellingen Anordnung zur pulsationsfreien Förderung eines flüssigen Mediums
JPS57177485A (en) * 1981-04-22 1982-11-01 Sharp Kk Ripple removing device in liquid feeder
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
JPS63297779A (ja) * 1987-05-29 1988-12-05 Hitachi Ltd 微量流体移送装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995026470A1 (fr) * 1994-03-28 1995-10-05 Robert Bosch Gmbh Pompe electro-hydraulique reglable
DE19706635A1 (de) * 1997-02-20 1998-09-03 Zahnradfabrik Friedrichshafen Vorrichtung zur Druckpulsationsdämpfung bei einer Pumpe
WO2010063664A1 (fr) * 2008-12-05 2010-06-10 Siemens Vai Metals Technologies Gmbh & Co Procédé et dispositif pour la réduction semi-active des fluctuations de la pression dans un système hydraulique
WO2010063661A3 (fr) * 2008-12-05 2010-07-29 Siemens Vai Metals Technologies Gmbh & Co Procédé et dispositif pour supprimer activement les fluctuations de pression dans un système hydraulique
CN102271832A (zh) * 2008-12-05 2011-12-07 西门子Vai金属科技有限责任公司 用于半有源降低液压系统内压缩振荡的方法和装置
RU2526647C2 (ru) * 2008-12-05 2014-08-27 Сименс Фаи Металз Текнолоджиз Гмбх Способ и устройство для активного подавления колебаний давления в гидравлической системе
WO2014151420A3 (fr) * 2013-03-15 2015-03-05 Lord Corporation Normalisateur d'écoulement de fluide
US10487823B2 (en) 2013-03-15 2019-11-26 Lord Corporation Fluid flow normalizer

Also Published As

Publication number Publication date
EP0379718A3 (fr) 1990-11-22
DE3844059A1 (de) 1990-08-30

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