DE3844059A1 - DEVICE AND METHOD FOR MOVING FLUID MEDIA - Google Patents
DEVICE AND METHOD FOR MOVING FLUID MEDIAInfo
- Publication number
- DE3844059A1 DE3844059A1 DE19883844059 DE3844059A DE3844059A1 DE 3844059 A1 DE3844059 A1 DE 3844059A1 DE 19883844059 DE19883844059 DE 19883844059 DE 3844059 A DE3844059 A DE 3844059A DE 3844059 A1 DE3844059 A1 DE 3844059A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- pulsation
- delivery line
- 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.)
- Ceased
Links
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
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)
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Bewegen von Strömungsmedien, insbesondere von Flüssigkeiten, in einer Förder leitung mittels einer Pumpe.The invention relates to a device and a method for moving of flow media, especially liquids, in a conveyor pipe by means of a pump.
Der Erfinder hat sich zum Ziel gesetzt, eine Verminderung der Druckunterschiede bei der Pumpenpulsation zu erreichen.The inventor has set itself the goal of reducing the To achieve pressure differences in the pump pulsation.
Zur Lösung dieser Aufgabe führt die Anwendung des an sich bekannten Piezo-Effektes entsprechend den alternativen Maßgaben der Ansprüche 1 und 2 bzw. 8 und 9.To solve this problem, the application of the known leads Piezo effect according to the alternative stipulations of claims 1 and 2 or 8 and 9.
Eine aktive Dämpfung der Druckpulsation wird durch die Erzeugung einer gleichgroßen, aber um 180°C versetzten Gegendruckpulsation erreicht; die resultierende Pulsation wird möglichst klein gehalten.Active damping of the pressure pulsation is achieved by generating a back pressure pulsation of equal size, but offset by 180 ° C; the resulting pulsation is kept as small as possible.
Nach einem anderen Lösungsweg werden die Druckspitzen der Druckpulsation durch ein Piezo-gesteuertes Ventil abgeschnitten.According to another approach, the pressure peaks of the Pressure pulsation cut off by a piezo controlled valve.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt inFurther advantages, features and details of the invention result from the following description of preferred exemplary embodiments as well as from the drawing; this shows in
Fig. 1, 3 jeweils schematisiert erfindungsgemäße Anordnungen; Fig. 1, 3 assemblies each schematically according to the invention;
Fig. 2, 4 Diagramme dazu bezüglich der jeweils erreichten Pulsation. Fig. 2, 4 diagrams thereto with respect to the pulsation achieved in each case.
Aus einem Behälter 10 wird mittels einer Pumpe 12 durch eine Förderleitung 14 Strömungsmedium zu einem Verbraucher 16 gebracht.Flow medium is brought from a container 10 to a consumer 16 by a pump 12 through a delivery line 14 .
Der Pumpe 12 ist eine Zweigleitung 18 der Förderleitung 14 nachgeordnet, die in Fig. 1 zu einem Piezo-Gegendruckerzeuger 20 führt. Diesem ist über elektrische Leitungen 22, 23 ein Regler 24 nachgeschaltet, an den ein Meßwertaufnehmer 26 mit elektrischem Ausgangssignal anschließt. Nach letzterem führt die Leitung 18 a zur Förderleitung 14 zurück.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 .
Das Diagramm der Fig. 2 zeigt die Druckdifferenz Δ p über der Zeit t bei der Pumpenpulsation A und der Gegendruckpulsation B des Piezo-Gegendruckerzeugers 20. Die resultierende Pulsation ist mit C bezeichnet.The diagram in FIG. 2 shows the pressure difference Δ p over time t in the case of pump pulsation A and the counter pressure pulsation B of the piezo back pressure generator 20 . The resulting pulsation is labeled C.
Die Fig. 1, 2 veranschaulichen die aktive Dämpfung der Druckpulsation A durch die Erzeugung einer gleichgroßen, aber um 180° versetzten Gegendruckpulsation B, so daß die resultierende Pulsation C möglichst klein gehalten wird. Die Gegendruckpulsation B wird mit Hilfe des Piezo-gesteuerten Elementes 20 erzeugt. Figs. 1, 2 the active damping of the pressure pulsation A illustrate by generating an equally large but offset by 180 ° Gegendruckpulsation B, 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 .
Beim Ausführungsbeispiel der Fig. 3, 4 führt die Zweigleitung 18 zu einem durch ein Piezoelement gesteuerten Ventil 21, das an ein Reservoir 11 angeschlossen ist. Hier wird die Pumpenpulsation a dadurch gemindert, daß Druckspitzen durch jenes piezo-gesteuerte Ventil 21 abgeschnitten werden.In the embodiment of FIGS. 3, 4, the branch line 18 leads to a valve 21 controlled by a piezo element, which is connected to a reservoir 11 . Here the pump pulsation a is reduced by cutting off pressure peaks through that piezo-controlled valve 21 .
In Fig. 4 ist der Bereich y jener ohne Einsatz des Ventils 21, welches im Bereich Z die beschriebene Wirkung erzeugt.In FIG. 4 is the area y of those without the use of the valve 21, which produces the effect described in the area Z.
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883844059 DE3844059A1 (en) | 1988-12-28 | 1988-12-28 | DEVICE AND METHOD FOR MOVING FLUID MEDIA |
EP19890123724 EP0379718A3 (en) | 1988-12-28 | 1989-12-22 | Device and method for moving fluid mediums |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883844059 DE3844059A1 (en) | 1988-12-28 | 1988-12-28 | DEVICE AND METHOD FOR MOVING FLUID MEDIA |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3844059A1 true DE3844059A1 (en) | 1990-08-30 |
Family
ID=6370367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19883844059 Ceased DE3844059A1 (en) | 1988-12-28 | 1988-12-28 | DEVICE AND METHOD FOR MOVING FLUID MEDIA |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0379718A3 (en) |
DE (1) | DE3844059A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4302977A1 (en) * | 1993-02-03 | 1994-03-31 | Bosch Gmbh Robert | Hydraulic plant with pump or motor - generates 180 deg. phase-displaced compensation wave against uneven surface of pressure medium flow |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4410719A1 (en) * | 1994-03-28 | 1995-10-05 | Bosch Gmbh Robert | Electrohydraulically adjustable pump |
DE19706635A1 (en) * | 1997-02-20 | 1998-09-03 | Zahnradfabrik Friedrichshafen | Pressure pulsation damping arrangement for pump |
AT507088B1 (en) * | 2008-12-05 | 2010-02-15 | Siemens Vai Metals Tech Gmbh | METHOD AND DEVICE FOR THE ACTIVE SUPPRESSION OF PRESSURE VIBRATIONS IN A HYDRAULIC SYSTEM |
AT507087B1 (en) * | 2008-12-05 | 2010-02-15 | Siemens Vai Metals Tech Gmbh | METHOD AND DEVICE FOR THE SEMI-ACTIVE REDUCTION OF PRESSURE VIBRATIONS IN A HYDRAULIC SYSTEM |
US10487823B2 (en) | 2013-03-15 | 2019-11-26 | Lord Corporation | Fluid flow normalizer |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3203722A1 (en) * | 1982-02-04 | 1983-08-18 | Gynkotek Gesellschaft für den Bau wissenschaftlich-technischer Geräte mbH, 8000 München | PISTON PISTON PUMP FOR LOW PULSATION CONVEYING A LIQUID |
DE3007116C2 (en) * | 1980-02-26 | 1986-11-20 | Walter Hofmann, Maschinenfabrik, 2084 Rellingen | Arrangement for pulsation-free delivery of a liquid medium |
DE3214619C2 (en) * | 1981-04-22 | 1987-04-02 | Sharp K.K., Osaka, Jp |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2217020A1 (en) * | 1972-04-08 | 1973-10-25 | Bran & Luebbe | PROCESS AND DEVICE FOR LOW PULSATION DOSING OF SEVERAL LIQUID COMPONENTS OF A MIXTURE |
JPS63297779A (en) * | 1987-05-29 | 1988-12-05 | Hitachi Ltd | Transfer device for trace quantity of fluid |
-
1988
- 1988-12-28 DE DE19883844059 patent/DE3844059A1/en not_active Ceased
-
1989
- 1989-12-22 EP EP19890123724 patent/EP0379718A3/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3007116C2 (en) * | 1980-02-26 | 1986-11-20 | Walter Hofmann, Maschinenfabrik, 2084 Rellingen | Arrangement for pulsation-free delivery of a liquid medium |
DE3214619C2 (en) * | 1981-04-22 | 1987-04-02 | Sharp K.K., Osaka, Jp | |
DE3203722A1 (en) * | 1982-02-04 | 1983-08-18 | Gynkotek Gesellschaft für den Bau wissenschaftlich-technischer Geräte mbH, 8000 München | PISTON PISTON PUMP FOR LOW PULSATION CONVEYING A LIQUID |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4302977A1 (en) * | 1993-02-03 | 1994-03-31 | Bosch Gmbh Robert | Hydraulic plant with pump or motor - generates 180 deg. phase-displaced compensation wave against uneven surface of pressure medium flow |
Also Published As
Publication number | Publication date |
---|---|
EP0379718A2 (en) | 1990-08-01 |
EP0379718A3 (en) | 1990-11-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8131 | Rejection |