CN106460874A - Hydraulic system - Google Patents
Hydraulic system Download PDFInfo
- Publication number
- CN106460874A CN106460874A CN201580031948.6A CN201580031948A CN106460874A CN 106460874 A CN106460874 A CN 106460874A CN 201580031948 A CN201580031948 A CN 201580031948A CN 106460874 A CN106460874 A CN 106460874A
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- China
- Prior art keywords
- hydraulic
- hydraulic system
- case
- pressure
- low
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Classifications
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
- B60K6/12—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
-
- 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
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/14—Hydraulic energy storages, e.g. hydraulic accumulators
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20569—Type of pump capable of working as pump and motor
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
- F16H61/4096—Fluid exchange between hydrostatic circuits and external sources or consumers with pressure accumulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to a hydraulic system (1), comprising at least one hydraulic machine (4), which has a low-pressure side (5) having a low-pressure accumulator (10) and a high-pressure side (6) having a high-pressure accumulator (8). In order to simplify the operation of a hydraulic system, a tank (14) can be connected to the hydraulic system (1; 21; 31; 41; 51) in order to degas the hydraulic system (1) and/or to compensate a loss of hydraulic medium.
Description
Technical field
The present invention relates to a kind of hydraulic system, which has at least one hydraulic machine, and the hydraulic machine has band low pressure
The low-pressure side of memorizer and the high-pressure side with high pressure accumulator.The invention further relates to a kind of hydraulic pressure with this hydraulic system drives
Dynamic device.The present invention also furthers relate to a kind of method for running this hydraulic system.
Background technology
A kind of hybrid drive for motor vehicles known to 10 2,011 002 967 A1 of German laid-open document DE,
Wherein, hydraulically powered energy transducer and the energy transducer for being driven with fuel gas are concured.
Content of the invention
The task of the present invention is, simplifies the operation of hydraulic system, and the hydraulic system has at least one hydraulic machine, institute
State hydraulic machine and there is the low-pressure side with low pressure memorizer and the high-pressure side with high pressure accumulator.
Hydraulic system has at least one hydraulic machine, and the hydraulic machine has the low-pressure side with low pressure memorizer and band
The high-pressure side of high pressure accumulator, in the case of the hydraulic system, the task is by the case solution that can be connected with the hydraulic system
Certainly, with to the hydraulic system aerofluxuss and/or to compensate hydraulic medium loss.The hydraulic machine is preferably directed to extrusion press, example
As axial piston machine.The hydraulic machine can be used as hydraulic pump on the first flow direction, preferably from low-pressure side to high-pressure side
Operation.And on the second flow direction, preferably from high-pressure side to low-pressure side, the hydraulic machine can be run as hydraulic motor.
The hydraulic pressure of closed loop is constituted with hydraulic machine and described two hydraulic storages with low-pressure side and the on high-tension side hydraulic system
System.Make it possible to simply realize the pressure compensation with surrounding by the case for adding.The case is preferably directed to comprising hydraulic pressure
The hydraulic container of medium, the hydraulic medium is loaded with ambient pressure.Low pressure in the low-pressure side of hydraulic system is more than
Ambient pressure.High pressure on the high-pressure side of hydraulic system is significantly more than the low pressure in low-pressure side.By being attached to hydraulic pressure
Case in system, the gas that simply can will be present in hydraulic system is exported in surrounding.Can also be by being attached to liquid
Volume compensation implemented by case in pressure system.In volume compensation, hydraulic medium is added to hydraulic system from case.By additional
Case can improve the suction properties of the hydraulic machine for running as pump.Thus improve the hydraulic machine in low temperature with accordingly
Operation in the case of hydraulic medium is high-viscosity.
A kind of preferred embodiment of the hydraulic system is characterised by, the connection between the hydraulic system and the case
Position is arranged in the highest position for gravity of low-pressure side.On the connecting portion, for example there is fluid pressure line to be attached to
In low-pressure side.The fluid pressure line makes low-pressure side be connected with the case.Undesirable gas is likely to occur in the operation of hydraulic system
Body is revealed.When low pressure memorizer is embodied as gasbag-type memorizer, this gas leakage is for example due to permeable rubber pneumatic bag
Cause.When low pressure memorizer is embodied as piston memorizer, may reveal on the piston ring of piston memorizer.Gas is let out
Dew both may occur on low pressure memorizer and occur in high pressure accumulator.Reached in hydraulic system due to the gas leakage
Gas be advantageously exported to as desired in surrounding.Export to gas volume in surrounding and may be with leading
The hydraulic medium that the gas volume for going out feeds out must be compensated for, so that the hydraulic medium volume of hydraulic system keeps constant.Because
The gas is lighter than the hydraulic medium, so gas leakage is combined with the pressure drop from high-pressure side to low-pressure side and stored in low pressure
The peak accumulation of device.Gas leakage can particularly effectively be derived by simple mode via the highest position of low-pressure side.Warp
Can be by simple mode as needed or at regular intervals by comprising gas leakage by the connecting portion
Hydraulic medium volume is exported in case.From case again by the gas, for example, ring around is exported to via the diaphragm of gas permeable
In border.And the hydraulic medium for being drained through gas then can be pumped into hydraulic pressure system from the case as needed or at regular intervals
In system, until described leakage is compensated.The hydraulic medium is for example related to hydraulic oil, and the hydraulic oil is also referred to as oil.
Another preferred embodiment of the hydraulic system is characterised by, the connection between the hydraulic system and the case
Portion includes the diaphragm of valve or gas permeable.Dual-use function can simply be realized by the valve.In the category of dual-use function,
The aerofluxuss of the hydraulic system can both be implemented by the valve and hydraulic medium compensating for loss and damage can have been implemented.By gas permeable
Diaphragm, advantageously can implement to the hydraulic system aerofluxuss in the case of not having additional handoff procedure.Advantageously only need through
By the diaphragm of the valve or the gas permeable, from the highest position of low pressure memorizer, peak derives hydraulic system in other words
Hydraulic medium cumulative volume sub-fraction because the gas loss of low pressure memorizer is related to one carries out obtaining slowly mistake
Journey.Therefore the whole hydraulic medium volume aerofluxuss of hydraulic system need not be given.
Another preferred embodiment of the hydraulic system is characterised by, the connection between the hydraulic system and the case
Portion additionally includes hydraulic resistance arrangement.The hydraulic resistance arrangement is for example related to throttle point.By the hydraulic resistance arrangement
Can make to keep little via the hydraulic medium volume flow that connecting portion is derived.This provides advantages below：Aerofluxuss can be better controled over
Journey and/or hydraulic medium compensating for loss and damage process.
Another preferred embodiment of the hydraulic system is characterised by, the hydraulic system includes additional conveying dress
Put, to be transported to hydraulic medium the hydraulic system from the case whenever necessary.The additional conveyer device has
It is attached in the low-pressure side of the hydraulic system sharply.Alternatively the hydraulic machine being present in the hydraulic system can be used,
Whenever necessary hydraulic medium is being transported to the hydraulic system from the case.For the purpose, can be by the hydraulic press
Device is used as hydraulic pump.
Another preferred embodiment of the hydraulic system is characterised by, the additional conveyer device passes through the hydraulic pressure
The high pressure of system is driving.The additional conveyer device is for example related to hydraulic pump.Hydraulic medium is pumped into institute from the case
State in hydraulic system and for example realized by piston, the piston is incited somebody to action from case suction hydraulic medium and in each piston stroke
A certain amount of hydraulic medium is pumped in the hydraulic system.The piston for example can be via suitable valve gear by the hydraulic pressure
The high drive of system.The piston can also be automatically driven, such as by the overvoltage of offer or negative pressure in motor vehicles.Described
Piston is advantageously associated with back-moving spring.According to another embodiment modification, the additional conveyer device is driven by electromechanical.
According to another embodiment modification, the additional conveyer device is purely mechanically driven.
Another preferred embodiment of the hydraulic system is characterised by, the case for aerofluxuss and/or pressure compensation and
Can be connected with surrounding.By leading to the connecting portion of surrounding, can according to need in order to aerofluxuss and/or pressure compensation and beat
The hydraulic system of Open-closed-loop.
Another preferred embodiment of the hydraulic system is characterised by, the connecting portion for leading to surrounding includes gas energy
Through diaphragm.This provides advantages below：Do not have any hydraulic medium to reach surrounding from the case in aerofluxuss.
Another preferred embodiment of the hydraulic system is characterised by, the connecting portion for leading to surrounding additionally includes
Hydraulic resistance arrangement.The hydraulic resistance arrangement is for example related to restriction.The volume flow of outflow can be kept by the restriction
Little.
The invention further relates to for the case of aforementioned hydraulic system, valve, the diaphragm of gas permeable, additional conveyer device
And/or hydraulic resistance arrangement.These parts that mentions individually can be sold.
The invention further relates to the fluid pressure drive device with aforementioned hydraulic system.The fluid pressure drive device is e.g. motor-driven
A part for car hydraulic-driven system.The fluid pressure drive device is particularly advantageously related to hydraulic hybrid driving means, and the hydraulic pressure is mixed
Closing driving means for example includes internal combustion engine as primary driving means, and internal combustion engine is also referred to as explosive motor.The hydraulic system
Hydraulic machine then constitute the secondary drive device of hydraulic hybrid driving means.In this case, the hydraulic system is advantageously
Including at least one other hydraulic machine.
The invention further relates to a kind of method for running aforementioned hydraulic system, the hydraulic system is particularly in aforementioned liquid
In hydraulic driver.Present invention generally provides advantages below：Compared with the operation of conventional hydraulic, in the hydraulic pressure
The additional hydraulic medium for needing in the operation of system is less.Thus the volume of additional case can be made to keep little, this is conducive to institute
The installing space for needing and the gross weight of the driving means for being equipped with the hydraulic system.Simply can be accorded with by the hydraulic system of closed loop
Close destination to take out the hydraulic medium of limited amount and/or supply the hydraulic medium of limited amount from the case to the hydraulic system.
This provides advantages below, can cancel the lasting scavenging to hydraulic system.Additionally, being advantageously able to connect by pressure compensated case
Receive the hydraulic medium of stored whole amount.By the additional case so that hydraulic medium can be supplemented in a straightforward manner
To in the hydraulic system of in addition closed loop.Additionally, make it possible to the hydraulic medium amount in visual inspection hydraulic system by the case.Logical
Cross the visual inspection and can quickly and easily recognize undesirable leakage.
A kind of preferred embodiment of methods described is characterised by, makes the hydraulic system for aerofluxuss with the case even
Connect, the case is connected with surrounding again.Thus undesirable gas leakage simply can be removed as needed.
Another preferred embodiment of methods described is characterised by, by the hydraulic machine that runs as pump as needed
Hydraulic medium is supplied to the hydraulic system from the case by ground.The hydraulic medium also can be via the connection for implementing the aerofluxuss
Position is supplied.
A kind of preferred embodiment of methods described is characterised by, by an additional conveyer device or described additional
Conveyer device as needed hydraulic medium is supplied to the hydraulic system from the case.Hydraulic medium in the case leads to
Cross the additional conveyer device and the hydraulic system is supplied to, but it is preferred that and come not via the connecting portion for implementing the aerofluxuss
Supply.
Other advantages, feature of the present invention and details are obtained by following description book, are described in detail with reference to the drawings wherein
Different embodiments.
Description of the drawings
Accompanying drawing is illustrated：
Fig. 1 has case according to the hydraulic circuit diagram of the hydraulic system of the present invention, the hydraulic system, the case can via valve or
It is connected with the low-pressure side of the hydraulic system via the diaphragm of gas permeable；
Fig. 2 hydraulic circuit diagram similar with Fig. 1, with additional valve between low-pressure side and the case；
Fig. 3 hydraulic circuit diagram similar with Fig. 1 and Fig. 2, with additional between the case and the low-pressure side of hydraulic system
Conveyer device；
Fig. 4 hydraulic circuit diagram similar with Fig. 3, with the different driving probability for the additional conveyer device；
Fig. 5 hydraulic circuit diagram similar with Fig. 3 and Fig. 4, wherein, the additional conveyer device includes the liquid with piston
Cylinder pressure；And
The different embodiment modification of three kinds of Fig. 6-8：How the piston that constitute additional conveyer device can be manipulated, with according to need
Hydraulic medium is transported to the hydraulic system from the case.
Specific embodiment
Hydraulic system 1 according to the present invention is shown in Fig. 1 to 5 respectively in the form of hydraulic circuit diagram；21；31；41；51
Different embodiments and embodiment modification.These hydraulic systems 1 are described later first；21；31；41；51 common ground.Make
With identical reference come the same or similar component of labelling.Then these hydraulic systems 1 are described；21；31；41；Between 51
Difference.
The hydraulic system 1；21；31；41；51 include hydraulic machine 4, and the hydraulic machine can for example be embodied as axial work
Plug machine.The hydraulic machine 4 is arranged between low-pressure side 5 and high-pressure side 6.There is the low of projecting ambient pressure in low-pressure side 5
Pressure.There is high pressure in high-pressure side 6, the high pressure is significantly higher than the low pressure in low-pressure side 5.
In high-pressure side 6, high pressure accumulator 8 is attached on hydraulic machine 4 via fluid pressure line 7.In low-pressure side 5, low pressure is deposited
Reservoir 10 is attached on hydraulic machine 4 via fluid pressure line 9.
High pressure accumulator 8 and low pressure memorizer 10 are also called pressure reservoir for short.Pressure reservoir 8 and 10 is for example implemented
For diaphragm type memorizer, gasbag-type memorizer or piston Accumulator and including compressible gas volume.
Main problem is that of pressure reservoir 8 and 10 with the gas volume：For example, due to rubber pneumatic bag
Undesirable permeability or cause the gas may be with undesirable side due to the leakage on the piston ring of pressure reservoir 8,10
Formula reaches hydraulic system 1 from pressure reservoir 8,10；21；31；In 41,51.The gas leakage can cause gas in hydraulic pressure system
System 1；21；31；41；Gather in 51.In order to ensure hydraulic system 1；21；31；41；51 by regulation operation, it is necessary to will be in hydraulic pressure system
The gas for gathering in system is derived.For example the gas can be exported in surrounding.Ring around exporting to the gas
The hydraulic medium volume that the gas volume of derivation and compensation may be fed out with gas is must be compensated for after in border.
For the purpose, according to an aspect of the present invention, via connecting portion 11 by comprising gas and hydraulic medium
Limited bulk is regularly exported in case 14 via fluid pressure line 12.The gas can be exported to ring around again from the case
In border.And according to a further aspect in the invention, in order to compensate hydraulic medium loss, be regularly drained through the hydraulic medium of gas from
Case 14 is pumped into the hydraulic system 1；21；31；41；In 51, until reveal to be compensated for as stopping.
Valve 15 is disposed with fluid pressure line 12, and the case 14 and the connection can be discharged as needed by the valve
Connection between position 11.The valve 15 is embodied as electrically-energized 2/2 reversal valve with open position state and close stance state.
By the spring that represents of symbolization ground, valve 15 is tightened in its close stance state in advance.In the close stance state, 14 He of case
Disconnecting between connecting portion 11.When valve 15 is manipulated by the company between connecting portion 11 and case 14 via fluid pressure line 12
Connect release.
Connecting portion 11 is arranged in hydraulic system 1 at the highest position of fluid pressure line 9 for gravity；21；31；41；
In 51 low-pressure side 5.Thus simply ensure, the gas leakage for being occurred about ground with operation is gathered at connecting portion 11.
When by correspondingly manipulation so that 2/2 reversal valve 15 is opened to case 14 when, then a certain amount of hydraulic medium is with highest
The gas leakage of point accumulation is escaped into by pressure compensated case 14.Because connecting portion 11 is arranged in the highest of fluid pressure line 9
At point, so advantageously only emergent gass first because gas due to its compared with hydraulic medium less density and on floating on
Side.
The hydraulic resistance arrangement 16 being connected between connecting portion 11 and valve 15 in restriction form.By be connected on valve 15 it
Front restriction 16 can be better controled over when valve 15 is opened by the flow of fluid pressure line 12.This provides advantages below again：Cut
Change valve 15 and can keep little.Restriction 16 can with shown differently be also valve 15 ingredient.
In a certain amount of gas, a certain amount of gas and hydraulic medium are exported to case by the valve 15 that opens in other words
After in 14, then valve 15 cuts out.The duration that valve 15 is opened is limited in time.
Manipulation to valve 15 for example can optimize by memory pressure measurement.When memory pressure is measured, by suitable
Sensor arrangement senses low pressure memorizer 10 in pressure.Manipulation to valve 15 passes through suitable (unshowned) control device
Carry out.
Four-headed arrow by not naming further represents in FIG：Valve 15 also can be replaced by the diaphragm 17 of gas permeable
Generation.Equally gas can be taken out from hydraulic system 1 and be exported to case 14 via the diaphragm 17 of the gas permeable.
Exporting to gas in case 14 can be via the diaphragm 18 of another gas permeable and alternatively hydraulic resistance arrangement 19
Export in surrounding, as shown in arrow 20.Hydraulic resistance arrangement 19 is for example embodied as restriction.
When valve 15 is opened, not only gas is escaped in case 14 but also hydraulic medium is also escaped in case 14.Therefore in aerofluxuss
After process must again by calm/be drained through the hydraulic medium of gas, especially hydraulic oil (also referred to as oil) and be pumped back to hydraulic system 1
In.
The blowback of hydraulic medium can be carried out by hydraulic machine 4 or by the conveyer device for adding.The additional conveying
Device is for example related to hydraulic pump.Hydraulic pump is driven in rotatable manner or can be driven to orthoscopic.
Hydraulic machine 4 can be used in the hydraulic system 21 shown in Fig. 2, by again calm/be drained through the hydraulic medium of gas
It is pumped back to fluid pressure line 9 from case 14.For the purpose, using hydraulic machine 4 as hydraulic pressure pump operation.
In order that this point can be realized, in the pumping side of hydraulic machine 4, valve 24 is disposed with low-pressure side 5.The valve 24
It is embodied as 3/2 reversal valve and is manipulated by electricity.
By the spring of Symbolic Representation, valve 24 is tightened in its toggle bit state shown in figure 2 in advance.In valve 24
Fluid pressure line 9 is attached with two joints.Fluid pressure line 25 is attached with the 3rd joint of valve 24.Fluid pressure line 25 realizes valve
Connection between 24 and case 14.
When switching valve 14 is manipulated, then the hydraulic medium pumped back fluid pressure line 9 of gas can will be drained through from case 14 via valve 24
In.The pumping is caused by the hydraulic machine 4 as hydraulic pressure pump operation.
Once the hydraulic medium of q.s is pumped in hydraulic system 21, just again valve 24 is transformed into it in fig. 2
In the rest position state for illustrating.Hereafter the hydraulic machine 4 for hydraulic pump that works aspirates hydraulic medium from low pressure memorizer 10 again.In order to
Avoid revealing, between case 14 and valve 24, be advantageously connected to check-valves 26.
Different solutions are shown in Fig. 3 to 5, how by additional conveyer device by Jie that is calm or being drained through gas
Matter is from 14 pumped back system of case.The hydraulic medium for being drained through gas is transported to additional conveyer device the hydraulic pressure of low-pressure side 5 from case 14
In pipeline 9.
In the hydraulic system 31 shown in Fig. 3, fluid pressure line 34 is attached to the hydraulic tube of low-pressure side 5 on connecting portion 33
On road 9.Fluid pressure line 34 makes connecting portion 33 be connected with case 14.It is disposed with fluid pressure line 34 additional in hydraulic pump form
Conveyer device 35.
Hydraulic pump 35 is driven by motor 38, and the motor is only by a circle come Symbolic Representation.By hydraulic pressure
The hydraulic medium for being drained through gas can be pumped into the fluid pressure line 9 of low-pressure side 5 by pump 35 as needed from case 14.In hydraulic pump 35
Check-valves 39 are connected between outlet and connecting portion 33.Check-valves 39 prevent from returning to the undesirable of case 14 from connecting portion 39 to be let out
Dew.
In the hydraulic system 41 shown in Fig. 4, fluid pressure line 44 is attached to the hydraulic tube of low-pressure side 5 at connecting portion 43
On road 9.Fluid pressure line 44 realizes the connection between fluid pressure line 9 and case 14.It is disposed with fluid pressure line 44 in hydraulic pump shape
The additional conveyer device 45 of formula.Hydraulic pump 45 substantially have with Fig. 3 in 35 identical function of hydraulic pump.
From unlike Fig. 3：Hydraulic pump 45 shown in Fig. 4 is driven in another way.Represented by arrow 46：Hydraulic pressure
Pump 45 can be mechanically driven by hydraulic system 41.The driving of hydraulic pump 45 can be carried out by (unshowned) assistant drive device.
Hydraulic pump 45 also can be by driving the axle of hydraulic machine 4 come Mechanical Driven.Represented by arrow 47：Hydraulic pump 45
Can hydraulically be driven by the axle of hydraulic machine 4.Hydraulic machine 4 is then worked as hydraulic motor, the hydraulic pressure horse in this case
Reach and driven by high pressure accumulator 8.
According on the other hand, arrangement of clutch 48 is connected between hydraulic machine 4 and hydraulic pump 45.Can by arrangement of clutch 48
Hydraulic pump 45 is separated from the driving means so that when should not convey, the drive shaft of hydraulic machine 4 is rotatable.
In order to avoid revealing, check-valves 49 are disposed with fluid pressure line 44.Check-valves 49 are connected on the outlet of hydraulic pump 45
Between connecting portion 43 and prevent from hydraulic medium from undesirably revealing from fluid pressure line 9 returning to case 14.
In the system 51 shown in Fig. 5, fluid pressure line 50 is attached to the fluid pressure line 9 of low-pressure side 5 at connecting portion 52
On.Fluid pressure line 50 realizes the connection between fluid pressure line 9 and case 14.It is attached with connecting portion 53 in fluid pressure line 50
Hydraulic cylinder with piston 54.
Hydraulic cylinder with piston 54 constitutes additional conveyer device, can be as needed by row by the additional conveyer device
The hydraulic medium for crossing gas is pumped into fluid pressure line 9 from case 14.Represented by arrow 55 how to pass through piston 54 by hydraulic medium
It is drawn into hydraulic cylinder from case 14.Represented by arrow 56 how hydraulic medium is pumped into from hydraulic cylinder by piston 54 low
In the fluid pressure line 9 of pressure side 5.
Check-valves 58 are disposed between connecting portion 53 and connecting portion 52.Check-valves 58 prevent hydraulic medium from hydraulic pressure
Pipeline 9 is undesirably back in case 14.
Check-valves 59 are disposed between case 14 and connecting portion 53.Check-valves 59 prevent hydraulic medium from not wishing from hydraulic cylinder
It is back in case 14 with hoping.
As shown in arrow 56, hydraulic medium is pumped into from hydraulic cylinder as needed by hydraulic system 51 by piston 54
In.By, in the backstroke shown in arrow 55, hydraulic medium is sucked into hydraulic cylinder from case 14.Illustrate in Fig. 6 to 8
Different probabilities：How piston 55 in hydraulic cylinder can be manipulated, by hydraulic medium from the hydraulic pressure of 14 pumped back low-pressure side 5 of case
In pipeline 9.
Figure 6 illustrates, the piston 54 in hydraulic cylinder how is manipulated by valve 60.Valve 60 is embodied as 3/2 reversal valve, quilt
Electricity manipulate and by symbolization the spring that represents be tightened in the toggle bit state that figure 6 illustrates of the valve in advance.
The joint 61 of valve 60 is loaded with low pressure.The joint 62 of valve 60 is loaded with high pressure.By the joint 63 of valve 60, living
Can be loaded with low pressure in the side on the left side in figure 6 or being loaded with high pressure in the piston of plug 54, as shown by arrows.Pass through
Spring 65, piston 54 is in figure 6 by towards left pretension.
When high pressure is applied in the side for being located at the left side in figure 6 of piston 54, then hydraulic medium is conveyed from hydraulic cylinder
To in the fluid pressure line 9 of low-pressure side 5.When piston 54 be located in figure 6 apply low pressure on the side on the left side when, then piston 54
Back extruded towards a left side by spring 65 again.Here, hydraulic medium is sucked into hydraulic cylinder from case 14.For this purpose, the spring of spring 65
Power must be equivalently corresponding to the pressure higher than the low pressure and the swabbing pressure sum.
Figure 7 illustrates, the piston 54 in hydraulic cylinder can also pass through motor 70 by leading screw 72 in the figure 7 towards left and
Towards right driving.Represented by four-headed arrow 74：Leading screw 72 can be placed in rotary motion by motor 70.By four-headed arrow
75 represent：The leading screw 72 of rotation is so coupled with piston 54 so that the rotary motion 74 of leading screw is converted into the translation of piston 54
Motion.
When piston 54 is by lead-screw driving device in the figure 7 by during towards right driving, then hydraulic medium is conveyed from hydraulic cylinder
To in the fluid pressure line of low-pressure side.When piston 54 is by lead-screw driving device in the figure 7 by during towards left driving, then by hydraulic medium
It is drawn into hydraulic cylinder from case.Here, the suction movement of piston 54 and conveying motion can pass through the check-valves 58 that figure 5 illustrates
Realize with 59.
59 here of check-valves makes it possible to the pressure that sets up in hydraulic cylinder.When hydraulic medium is aspirated, check-valves 59 are opened.Only
Returning valve 58 prevents from revealing back case 14 from fluid pressure line 9.In the embodiment modification shown in Fig. 5 to 8, the conveying of hydraulic medium
Amount can be calculated by the number of strokes of piston 54.
Figure 8 illustrates, the piston 54 in hydraulic cylinder also can be pneumatically manipulated by being embodied as the valve 80 of pneumatic operated valve.Pneumatic
Valve 80 is embodied as 3/2 reversal valve, and the reversal valve is manipulated and be tightened to by electricity in advance the toggle bit that the reversal valve figure 8 illustrates
In state.
In shown toggle bit state, piston 54 passes through valve 80 by pressure in the side for being located at the left side in fig. 8 of the piston
It is unloaded in surrounding, as indicated with arrows 81.Pneumatic pressure is applied with the joint 82 of valve 80.By cutting to valve 80
Change, piston 54 is loaded in the side for being located at the left side in fig. 8 of the piston with Pneumatic pressure, as shown in arrow 83.
When Pneumatic pressure is applied in the side for being located at the left side in fig. 8 of piston 54, then hydraulic medium is from hydraulic cylinder quilt
It is transported in the fluid pressure line of low-pressure side.When ambient pressure is applied in the side for being located at the left side in fig. 8 of piston 54,
Then piston 54 is back extruded towards a left side by spring force.Here, hydraulic medium is sucked into hydraulic cylinder from case.For this purpose, spring force must
Than ambient pressure and swabbing pressure sum high pressure is corresponded to equivalently must.
Alternatively, the driving of the piston 54 in cylinder also can be carried out by negative pressure.The piston here of corresponding negative pressure unit must
Must act on the piston 54 in hydraulic cylinder.
Claims (15)
1. a kind of hydraulic system (1；21；31；41；51), which has at least one hydraulic machine (4), and the hydraulic machine has
Low-pressure side with low pressure memorizer (10) (5) and the high-pressure side (6) with high pressure accumulator (8), it is characterised in that be provided with case
(14), the case can be with the hydraulic system (1；21；31；41；51) connect, to give the hydraulic system (1；21；31；41；
51) aerofluxuss and/or so that compensation hydraulic medium loss.
2. hydraulic system according to claim 1, it is characterised in that the hydraulic system (1；21,31；41,51) and institute
State the highest position for gravity that the connecting portion (11) between case (14) is arranged in the low-pressure side (5).
3. according to hydraulic system in any one of the preceding claims wherein, it is characterised in that the hydraulic system (1；21；31；
41；51) connecting portion and between the case (14) includes valve (15；24) or gas permeable diaphragm (17).
4. hydraulic system according to claim 3, it is characterised in that the hydraulic system (1；21；31；41；51) and institute
Stating the connecting portion between case (14) additionally includes hydraulic resistance arrangement (16).
5. according to hydraulic system in any one of the preceding claims wherein, it is characterised in that the hydraulic system (1,21,31；
41；51) include additional conveyer device (35；45；54), whenever necessary hydraulic medium to be transported to institute from the case (14)
State hydraulic system (1,21；31；41；51) in.
6. hydraulic system according to claim 5, it is characterised in that the additional conveyer device (54) passes through the liquid
Pressure system (1；21；31；41；51) high pressure is driving.
7. according to hydraulic system in any one of the preceding claims wherein, it is characterised in that case (14) in order to aerofluxuss and/
Or can be connected with surrounding for pressure compensation.
8. according to hydraulic system in any one of the preceding claims wherein, it is characterised in that lead to the connecting portion of surrounding
Diaphragm (18) including gas permeable.
9. hydraulic system according to claim 8, it is characterised in that the connecting portion for leading to surrounding additionally includes liquid
Pressure drag power apparatus (19).
10. it is used for according to hydraulic system in any one of the preceding claims wherein (1；21；31；41；51) case (14), valve
(15；24；26；39；49；58,59,60：80), the diaphragm (17,18) of gas permeable, additional conveyer device (35；45；54)
And/or hydraulic resistance arrangement (16,19).
A kind of 11. fluid pressure drive devices, which has hydraulic system according to any one of claim 1 to 9 (1；21；31,
41；51).
12. are used for operation according to hydraulic system in any one of the preceding claims wherein (1；21；31；41；51) method, institute
State hydraulic system of the hydraulic system especially in accordance with the fluid pressure drive device described in claim 11.
13. methods according to claim 12, it is characterised in that for aerofluxuss by the hydraulic system (1；21,31；
41；51) it is connected with the case (14), and the case is connected with surrounding.
14. methods according to claim 12 or 13, it is characterised in that by the hydraulic machine (4) for running as pump
As needed hydraulic medium is supplied to the hydraulic system (1 from the case (14)；21；31；41；51).
15. methods according to claim 12 or 13, it is characterised in that by an additional conveyer device or by institute
State additional conveyer device (35；45；54) as needed hydraulic medium is supplied to the hydraulic system from the case (14)
(1；21；31；41；51).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014209132.2A DE102014209132A1 (en) | 2014-05-14 | 2014-05-14 | hydraulic system |
| DE102014209132.2 | 2014-05-14 | ||
| PCT/EP2015/058582 WO2015172981A1 (en) | 2014-05-14 | 2015-04-21 | Hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106460874A true CN106460874A (en) | 2017-02-22 |
Family
ID=53039395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580031948.6A Pending CN106460874A (en) | 2014-05-14 | 2015-04-21 | Hydraulic system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106460874A (en) |
| DE (1) | DE102014209132A1 (en) |
| WO (1) | WO2015172981A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799212A (en) * | 2018-07-24 | 2018-11-13 | 吉林大学 | A kind of emergency power power plant of hydraulic system |
| CN111417803A (en) * | 2017-10-09 | 2020-07-14 | 波克兰液压工业设备公司 | Filter for dredging inlet |
| CN111417802A (en) * | 2017-10-09 | 2020-07-14 | 波克兰液压工业设备公司 | Flushing of hydraulic fluid at start-up |
| CN112567139A (en) * | 2018-08-16 | 2021-03-26 | 穆格股份有限公司 | Electro-hydrostatic actuator system with supplemental suction vessel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016217906A1 (en) | 2016-09-19 | 2018-03-22 | Robert Bosch Gmbh | Low-pressure accumulator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3252381A (en) * | 1962-11-16 | 1966-05-24 | Gratzmuller Jean Louis | Rapid response hydraulic system |
| US6402810B1 (en) * | 1997-04-23 | 2002-06-11 | Daimlerchrysler Ag | Method for dehydrating and/or degassing hydraulic fluids, device for carrying out said method and use of said device |
| CN1529665A (en) * | 2000-11-28 | 2004-09-15 | Л | Hydraulic energy storage system |
| DE102011002967A1 (en) * | 2011-01-21 | 2012-07-26 | Robert Bosch Gmbh | Hybrid drive for use as e.g. internal combustion engine of passenger car, has hydraulically powered energy converter and combustible gas powered energy converter cooperated with each other and assigned to energy-storage systems |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4201565A1 (en) * | 1992-01-22 | 1993-07-29 | Teves Gmbh Alfred | Container for vehicle brake fluid - has gas permeable but fluid impermeable membrane set on opening |
-
2014
- 2014-05-14 DE DE102014209132.2A patent/DE102014209132A1/en not_active Withdrawn
-
2015
- 2015-04-21 WO PCT/EP2015/058582 patent/WO2015172981A1/en active Application Filing
- 2015-04-21 CN CN201580031948.6A patent/CN106460874A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3252381A (en) * | 1962-11-16 | 1966-05-24 | Gratzmuller Jean Louis | Rapid response hydraulic system |
| US6402810B1 (en) * | 1997-04-23 | 2002-06-11 | Daimlerchrysler Ag | Method for dehydrating and/or degassing hydraulic fluids, device for carrying out said method and use of said device |
| CN1529665A (en) * | 2000-11-28 | 2004-09-15 | Л | Hydraulic energy storage system |
| DE102011002967A1 (en) * | 2011-01-21 | 2012-07-26 | Robert Bosch Gmbh | Hybrid drive for use as e.g. internal combustion engine of passenger car, has hydraulically powered energy converter and combustible gas powered energy converter cooperated with each other and assigned to energy-storage systems |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111417803A (en) * | 2017-10-09 | 2020-07-14 | 波克兰液压工业设备公司 | Filter for dredging inlet |
| CN111417802A (en) * | 2017-10-09 | 2020-07-14 | 波克兰液压工业设备公司 | Flushing of hydraulic fluid at start-up |
| CN108799212A (en) * | 2018-07-24 | 2018-11-13 | 吉林大学 | A kind of emergency power power plant of hydraulic system |
| CN112567139A (en) * | 2018-08-16 | 2021-03-26 | 穆格股份有限公司 | Electro-hydrostatic actuator system with supplemental suction vessel |
| US11603867B2 (en) | 2018-08-16 | 2023-03-14 | Moog Gmbh | Electrohydrostatic actuator system with an expansion reservoir |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014209132A1 (en) | 2015-11-19 |
| WO2015172981A1 (en) | 2015-11-19 |
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Application publication date: 20170222 |