EP1317624A1 - Hydraulisches system mit einer hauptpumpe und einer vordruckpumpe - Google Patents
Hydraulisches system mit einer hauptpumpe und einer vordruckpumpeInfo
- Publication number
- EP1317624A1 EP1317624A1 EP01956507A EP01956507A EP1317624A1 EP 1317624 A1 EP1317624 A1 EP 1317624A1 EP 01956507 A EP01956507 A EP 01956507A EP 01956507 A EP01956507 A EP 01956507A EP 1317624 A1 EP1317624 A1 EP 1317624A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic system
- pump
- main pump
- control
- pressure pump
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
- F04B23/106—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being an axial piston pump
-
- 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
- F04B49/08—Regulating by delivery pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
-
- 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
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0209—Rotational speed
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/12—Combinations of two or more pumps the pumps being of different types at least one pump being of the rotary-piston positive-displacement type
Definitions
- Hydraulic system with a main pump and one
- the invention relates to a hydraulic system according to the preamble of claim 1.
- WO 99/61796 describes a hydraulic system of the type specified at the outset with an adjustable main pump and a pre-pressure pump upstream of it and connected to it by a connecting line, an adjustable throttle being arranged in the connecting line and being adjustable by an electronic control device.
- the inlet pressure of the main pump can be changed, whereby the delivery rate of the main pump can be influenced.
- the throttle generates heat which not only proves to be a loss of power but also leads to heating of the hydraulic medium with associated cooling problems.
- the invention has for its object to design a hydraulic system of the type mentioned in such a way that a high efficiency of the system can be achieved.
- the admission pressure pump has an adjusting device for adjusting the admission pressure pump
- the admission pressure pump it is possible to adjust the admission pressure pump and to establish or position it in the set position manually or by means of a control or regulating device.
- a control or regulating device all that is required is an adjustment mechanism of the pre-pressure pump that can be operated manually.
- the adjusting device of the admission pressure pump is assigned a control or regulating device, which preferably works automatically.
- the subclaims contain, among other things, features that enable the use of various tax and regulatory features.
- __. B. to control or regulate so that the delivery ratio is always the same. In this way, a constant suction pressure for the main pump is achieved and fluctuations in the delivery rate of the main pump caused by suction pressures of different sizes are avoided.
- FIG. 1 shows a hydraulic system according to the invention as a functional diagram
- Fig. 2 shows the system in a modified form.
- a suction line 3 extends from a tank 2 to the inlet 4 of a pre-pressure pump 5, the delivery volume of which is adjustable.
- the admission pressure pump 5 has an adjusting device 6, which is adjustable by a first control or regulating device 7 and can be locked in the adjusted or set position.
- a connection line 9 extends from the outlet 8 of the admission pressure pump 5 to the inlet 11 of a main pump 12, the delivery volume of which is preferably also adjustable.
- the main pump 12 has an adjusting device 13 which is adjustable and adjustable by a second control or regulating device 14.
- the invention is not limited to a particular construction or function type of the pumps' 5, 12th This also applies to the adjusting devices 6, 13 and the control and regulating devices 7, 14. These can be of one of the known types of construction and function.
- the pumps can each be, for example, a vane pump, radial piston pump or preferably an axial piston pump.
- the pumps 5, 12 can be pressure-controlled or flow-controlled or power-controlled.
- the Control devices 7, 14 can have a pressure regulator or delivery quantity regulator or power regulator.
- control or regulating device 7, 14 taking into account control or regulating signals that the.
- Control or regulating device 7, 14 are supplied by means of control or signal lines.
- control or signal line 15 which extends from an outlet 16 of the main pump 12 to a consumer A.
- Working pressure line 17 extends to the second control or regulating device 14. This can e.g. are a pressure signal for a pressure regulator or a delivery signal for a delivery regulator or a pressure and delivery signal for a power regulator.
- Pressure signals or delivery quantity signals of the pre-pressure pump can also be fed to a pressure regulator or delivery quantity regulator of the first control or regulating device 7, e.g. by a control or signal line 18, which connects the connecting line 9 to the first control or regulating device 7. It is also possible to supply these signals also or only to the pressure controller or delivery rate controller or power controller of the second control device 14, which is illustrated by a control or signal line branch 18a connected to the second control device 14.
- first control or regulating device 7 it is also possible within the scope of the invention to operate the first control or regulating device 7 as a function of the second control or regulating device 14.
- Corresponding signals are transmitted to the first control or regulating device 7 from the second control or regulating device 14, for example through a signal line 19 connecting them.
- the control or signal line branch 18b can be omitted.
- the control or regulating signals can also be supplied from consumer A to first control or regulating device 7 and / or second control or regulating device 14, for example through signal lines which connect consumer A to the first and / or second control or regulating device 7, 14 connect.
- two consumers B, C for example of a device, to be present, of which the control or regulating signals of one consumer B of the second control or regulating device 14 and the control or regulating signals of the other consumer C of the first control or control device 7, for example through the signal lines 20, 21.
- the second consumer C can be connected to the connecting line 9 by a connecting line branch 9a and can thus be fed from it.
- FIG. 2 It is also possible within the scope of the invention, according to the exemplary embodiment according to FIG. 2, in which the same or comparable parts are provided with the same reference numerals, as a function of the main pump 12, by means of a mechanical coupling 22 connecting the adjusting devices 6, 13 to control or regulate.
- the adjustment devices 6, 13 are formed by swivel devices
- the coupling 22 can e.g. be formed by a connecting rod 22a which is pivotally connected to the pivoting devices or to the pivoting levers thereof.
- FIG. 2 Such an embodiment is shown in FIG. 2.
- both pumps 5, 12 always have the same setting or delivery rate ratio, for example the same Swivel angle.
- the pressure in the connecting line 9 and thus the suction pressure of the main pump 12 is always constant. Against it. in the case of a control or regulation of the primary pressure pump 5 that is independent of the main pump 12, the pressure in the connecting line 9 and thus also the suction pressure of the main pump 12 differ depending on the adjustment position of the primary pressure pump 5.
- a coupling 22 it is also possible, in the presence of a coupling 22, to implement an adjustment which deviates from a ' synchronous adjustment of the form pressure pump 5, for example an adjustment which deviates according to a specific characteristic curve.
- This can take place, for example, by means of a gear 23 or a motor, which is integrated in the mechanical coupling 22 and can be connected to the second control or regulating device 14, for example, by a control or signal line 24.
- the gear 23 or the motor can, for. B. can be integrated into the mechanical coupling 22 or into the connecting rod 22a in such a way that their effective length, ie the distance between the connection or articulation points, is increased or shortened in the desired manner.
- a hydraulic compensating connection 25 or overflow connection between the connecting line 9 and the tank 2 which makes it possible, if the delivery rates of the pumps 5, 12 are not the same, to overflow the to allow hydraulic medium to the tank or vice versa. If, for example, the delivery rate of the main pump 12 is smaller than the delivery rate of the pre-pressure pump 5, hydraulic fluid can flow to the tank 2 bypassing the pre-pressure pump 5. On the other hand, it is also possible, bypassing the form pressure pump 5, to suck hydraulic fluid towards the connecting line 9 if the delivery volume of the main pump 12 is greater than that of the form pressure pump 5.
- bypasses formed by hydraulic lines the form pressure pump 5, can be bypassed 26, 27 can be formed, which Connect line 9 to tank 2 or suction line 3.
- a valve 28, 29, preferably a check valve, is arranged in each of the bypasses 26, 27, of which one valve 28 makes it possible to draw hydraulic fluid to the connecting line 9, while the other valve 29 makes it possible to draw hydraulic fluid from the connecting line 9 to the Let tank 2 or flow to suction line 3.
- the bypasses 26, 27 can be connected to the tank 2 or to the suction line 3, which is represented by indicated line branches ' .
- admission pressure pump 5 separately from the main pump 12 or to add it to the main pump 5 or to integrate it into the main adjustment system, e.g. to integrate into the main pump 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Details Of Reciprocating Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10045118 | 2000-09-13 | ||
DE10045118A DE10045118B4 (de) | 2000-09-13 | 2000-09-13 | Hydraulisches System mit einer Hauptpumpe und einer Vordruckpumpe |
PCT/EP2001/007459 WO2002023041A1 (de) | 2000-09-13 | 2001-06-29 | Hydraulisches system mit einer hauptpumpe und einer vordruckpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1317624A1 true EP1317624A1 (de) | 2003-06-11 |
EP1317624B1 EP1317624B1 (de) | 2008-03-12 |
Family
ID=7655960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01956507A Expired - Lifetime EP1317624B1 (de) | 2000-09-13 | 2001-06-29 | Hydraulisches system mit einer hauptpumpe und einer vordruckpumpe |
Country Status (5)
Country | Link |
---|---|
US (1) | US6997685B2 (de) |
EP (1) | EP1317624B1 (de) |
JP (1) | JP5016776B2 (de) |
DE (2) | DE10045118B4 (de) |
WO (1) | WO2002023041A1 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4585415B2 (ja) * | 2005-09-20 | 2010-11-24 | 株式会社タクミナ | 往復動ポンプユニット、及び往復動ポンプ接続用配管構造体 |
DE102006014194B4 (de) * | 2006-03-28 | 2021-05-06 | Bayerische Motoren Werke Aktiengesellschaft | Hydrauliksystem zur Versorgung eines Aktuators in einem Kraftfahrzeug |
DE102007032103B4 (de) * | 2007-05-16 | 2022-02-24 | Robert Bosch Gmbh | Pumpeneinheit mit einer Hauptpumpe und einer in ihrem Fördervolumen verstellbaren Ladepumpe |
US9163618B2 (en) | 2008-06-24 | 2015-10-20 | Agilent Technologies, Inc. | Automated conversion between SFC and HPLC |
US8215922B2 (en) | 2008-06-24 | 2012-07-10 | Aurora Sfc Systems, Inc. | Compressible fluid pumping system for dynamically compensating compressible fluids over large pressure ranges |
US8454321B2 (en) | 2009-05-22 | 2013-06-04 | General Compression, Inc. | Methods and devices for optimizing heat transfer within a compression and/or expansion device |
US8286659B2 (en) * | 2009-05-22 | 2012-10-16 | General Compression, Inc. | Compressor and/or expander device |
CN102575668B (zh) * | 2009-09-03 | 2015-04-22 | 普拉德研究及开发股份有限公司 | 泵体 |
WO2011027274A2 (en) | 2009-09-03 | 2011-03-10 | Schlumberger Canada Limited | Pump assembly |
CA2785471A1 (en) | 2009-12-24 | 2011-06-30 | General Compression Inc. | System and methods for optimizing efficiency of a hydraulically actuated system |
US8419936B2 (en) * | 2010-03-23 | 2013-04-16 | Agilent Technologies, Inc. | Low noise back pressure regulator for supercritical fluid chromatography |
EP2649326A1 (de) | 2010-12-07 | 2013-10-16 | General Compression Inc. | Verdichter und/oder expander mit rollkolbendichtung |
US8997475B2 (en) | 2011-01-10 | 2015-04-07 | General Compression, Inc. | Compressor and expander device with pressure vessel divider baffle and piston |
US8572959B2 (en) | 2011-01-13 | 2013-11-05 | General Compression, Inc. | Systems, methods and devices for the management of heat removal within a compression and/or expansion device or system |
EP2663758A1 (de) | 2011-01-14 | 2013-11-20 | General Compression Inc. | Druckgasspeicher und rückgewinnungssystem sowie verfahren für den systembetrieb |
DE102011115805B4 (de) | 2011-10-12 | 2021-12-09 | Robert Bosch Gmbh | Hydraulisches System mit einer Hauptpumpe und mit einer Ladepumpe |
US8522538B2 (en) | 2011-11-11 | 2013-09-03 | General Compression, Inc. | Systems and methods for compressing and/or expanding a gas utilizing a bi-directional piston and hydraulic actuator |
US8387375B2 (en) | 2011-11-11 | 2013-03-05 | General Compression, Inc. | Systems and methods for optimizing thermal efficiency of a compressed air energy storage system |
DE102015216958A1 (de) * | 2015-09-04 | 2017-03-09 | Albert Ziegler Gmbh | Verfahren zum Betreiben einer Feuerlöschpumpe |
DE112020000997B4 (de) | 2019-04-25 | 2024-01-11 | Murata Manufacturing Co., Ltd. | Pumpvorrichtung mit einer ersten und zweiten piezoelektrischen Pumpe mit unterschiedlichen Eingangsleistungen |
DE102020205941A1 (de) | 2020-05-12 | 2021-11-18 | Mahle International Gmbh | Ölpumpsystem und ein Verfahren zum Regeln des Ölpumpsystems |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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US1877091A (en) * | 1931-10-19 | 1932-09-13 | Harry F Vickers | Variable volume pump |
US3431856A (en) * | 1967-02-06 | 1969-03-11 | Continental Machines | Two-stage pumping apparatus |
US4312626A (en) * | 1979-03-08 | 1982-01-26 | Texaco Inc. | Multi-stage compressor control system and method |
GB2150981A (en) * | 1983-11-10 | 1985-07-10 | Vs Eng Ltd | Apparatus and method for pumping a fluid |
DE3401759A1 (de) * | 1984-01-19 | 1985-08-01 | Linde Ag, 6200 Wiesbaden | Hydrostatische einrichtung |
DE3401775C2 (de) * | 1984-01-19 | 1996-10-17 | Linde Ag | Hydrostatische Einrichtung mit einer einstellbaren Pumpe |
US4711616A (en) * | 1984-12-13 | 1987-12-08 | Nippondenso Co., Ltd. | Control apparatus for a variable displacement pump |
JPH089389Y2 (ja) * | 1988-07-25 | 1996-03-21 | 日産ディーゼル工業株式会社 | 直噴式ディーゼルエンジンの燃料噴射装置 |
US5186612A (en) * | 1992-01-16 | 1993-02-16 | Caterpillar Inc. | Variable pressure inlet system for hydraulic pumps |
DE4403618A1 (de) * | 1994-02-05 | 1995-08-10 | Uraca Pumpen | Kolbenpumpe mit Boosterpumpe |
US5482441A (en) * | 1994-04-18 | 1996-01-09 | Permar; Clark | Liquid flow control system |
US5863186A (en) * | 1996-10-15 | 1999-01-26 | Green; John S. | Method for compressing gases using a multi-stage hydraulically-driven compressor |
EP1000245B1 (de) * | 1998-05-26 | 2004-08-25 | Caterpillar Inc. | Hydrauliksystem mit einer pumpe mit variabler fördermenge |
DE19902292A1 (de) * | 1999-01-21 | 2000-07-27 | Mannesmann Rexroth Ag | Fördereinheit |
-
2000
- 2000-09-13 DE DE10045118A patent/DE10045118B4/de not_active Expired - Lifetime
-
2001
- 2001-06-29 EP EP01956507A patent/EP1317624B1/de not_active Expired - Lifetime
- 2001-06-29 JP JP2002527659A patent/JP5016776B2/ja not_active Expired - Lifetime
- 2001-06-29 US US10/363,964 patent/US6997685B2/en not_active Expired - Lifetime
- 2001-06-29 WO PCT/EP2001/007459 patent/WO2002023041A1/de active IP Right Grant
- 2001-06-29 DE DE50113730T patent/DE50113730D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0223041A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10045118B4 (de) | 2006-02-09 |
US20030185687A1 (en) | 2003-10-02 |
JP5016776B2 (ja) | 2012-09-05 |
EP1317624B1 (de) | 2008-03-12 |
DE10045118A1 (de) | 2002-03-28 |
WO2002023041A1 (de) | 2002-03-21 |
JP2004509269A (ja) | 2004-03-25 |
US6997685B2 (en) | 2006-02-14 |
DE50113730D1 (de) | 2008-04-24 |
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