CN102410286A - Cooling system, hydraulic transmission system comprising same and vehicle - Google Patents
Cooling system, hydraulic transmission system comprising same and vehicle Download PDFInfo
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- CN102410286A CN102410286A CN201110350147XA CN201110350147A CN102410286A CN 102410286 A CN102410286 A CN 102410286A CN 201110350147X A CN201110350147X A CN 201110350147XA CN 201110350147 A CN201110350147 A CN 201110350147A CN 102410286 A CN102410286 A CN 102410286A
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Abstract
The invention provides a cooling system, a hydraulic transmission system comprising same and a vehicle. The cooling system is used for cooling the hydraulic fluid of the hydraulic transmission system and comprises a hydraulic fluid flow-in pipeline, a cooling device and a hydraulic fluid flow-out pipeline, wherein the hydraulic fluid flow-in pipeline is connected between the hydraulic transmission system and the cooling device; the hydraulic fluid flows in the cooling device from the hydraulic transmission system through the hydraulic fluid flow-in pipeline; the hydraulic fluid flow-out pipeline is connected between the cooling device and the hydraulic transmission system; the hydraulic fluid flows back to the hydraulic transmission system from the cooling device through the hydraulic fluid flow-out pipeline; and the cooling system also comprises at least one energy storage device which is connected to the hydraulic fluid flow-in pipeline.
Description
Technical field
The present invention relates to the hydraulic equipment technical field, relate in particular to hydraulic circuit design and improvement fields such as the pulsation of high-pressure oil passage absorption system, mitigation hydraulic shock.
Background technique
Hydraulic Power Transmission System also can abbreviate hydraulic system as, is the system that a kind of variation that utilizes the volume of the hydraulic fluid (or hydraulic fluid) in the sealed volume comes transferring power (energy).Hydraulic Power Transmission System generally can comprise following components: energy part, be used for mechanical energy convert to hydraulic fluid pressure can, for example, various types of oil hydraulic pumps etc.; Do-part is used for converting the pressure of hydraulic fluid to drive the workpiece motion mechanical energy, for example, and oil hydraulic cylinder, oil hydraulic motor etc.; The regulating and controlling part is used for controlling and the pressure of the hydraulic fluid of regulator solution pressing system, flow, the flow direction etc., to satisfy the requirement of the required power of workpiece (moment), speed (rotating speed) and motion cycle, for example, various pressure valve, Flow valve, selector valve etc.Except above-mentioned part; Hydraulic Power Transmission System can also comprise slave part; For example; Hydraulic fluid storage tank (fuel tank), hydraulic fluid transport tube (oil pipe), hydraulic fluid filter (oil purifier), accumulator, pressure gauge, heater and/or radiator etc. are to guarantee the reliability and stability of Hydraulic Power Transmission System work.
The hydraulic fluid that Hydraulic Power Transmission System adopted (or hydraulic fluid) is generally mineral oil, so hydraulic fluid also is called as hydraulic oil.Because elevated temperature can make the cohesive force of liquid reduce, so the viscosity of liquid is very sensitive for temperature, for example, when temperature raise slightly, fluid viscosity possibly significantly descend.The viscosity with temperature of every kind of liquid and the viscosity that changes-temperature property is different.Usually, for Hydraulic Power Transmission System, the viscosity with temperature of the hydraulic oil that requirement is used in Hydraulic Power Transmission System changes more little well more, that is, require hydraulic oil to have good sticking-temperature characteristics.
When in Hydraulic Power Transmission System, carrying out transformation of energy, for example, when mechanical energy converted the pressure ability of hydraulic oil to, perhaps when the pressure of hydraulic oil can convert the mechanical energy that drives the workpiece motion to, the energy of a part can convert heat energy into.Such heat energy causes the temperature of hydraulic oil to raise, and causes the viscosity-modifying of hydraulic oil.Therefore, can radiator be set, with through making hydraulic oil flow through the temperature that radiator reduces hydraulic oil in Hydraulic Power Transmission System.
Yet when Hydraulic Power Transmission System was worked, the pressure and the flow that flow to the hydraulic oil of radiator can be in the control variations down and constantly of regulating and controlling part.So continuous variation of the pressure of hydraulic oil and flow has caused impact to radiator, thereby possibly seriously influence the working life of radiator.
Summary of the invention
Embodiment's purpose is to overcome above-mentioned and other shortcomings in the prior art.For this reason, embodiment provides a kind of radiation system, and said radiation system can be the hydraulic fluid heat radiation of Hydraulic Power Transmission System.
According to one exemplary embodiment of the present invention; A kind of radiation system can comprise that hydraulic fluid flows into pipeline, sink and hydraulic fluid and flows out pipeline; Said hydraulic fluid flows into pipeline and is connected between said Hydraulic Power Transmission System and the said sink; Hydraulic fluid flows into pipeline from said Hydraulic Power Transmission System through said hydraulic fluid and flow to the said sink; Said hydraulic fluid flows out pipeline and is connected between said sink and the said Hydraulic Power Transmission System, and hydraulic fluid flows through said hydraulic fluid outflow pipeline from said sink and gets back to the said Hydraulic Power Transmission System, wherein; Said radiation system also comprises at least one accumulator, and said at least one accumulator is connected to said hydraulic fluid and flows into pipeline.
Said at least one accumulator can be bladder accumulator.
Said at least one accumulator can be a plurality of accumulators that are connected in parallel with each other.
Said radiation system can also comprise vent relief valve, and said vent relief valve can be connected said hydraulic fluid with said sink parallelly connectedly and flow between pipeline and the said hydraulic fluid outflow pipeline.
Said sink can comprise heat dissipation pipeline, and the hydraulic fluid that flow into the said sink from said hydraulic fluid inflow pipeline can flow through said heat dissipation pipeline, to dispel the heat.
Total work volume V of said at least one accumulator
0Can satisfy following formula:
Wherein, P
2For flow into the highest pressure that said hydraulic fluid flows into the hydraulic fluid the pipeline, P from said Hydraulic Power Transmission System
0Be the inflation pressure of said at least one accumulator, m is for flowing into the gross mass that said hydraulic fluid flows into the hydraulic fluid the pipeline from said Hydraulic Power Transmission System, and v is that hydraulic fluid flows into the flow velocity in the pipeline at said hydraulic fluid.
According to one exemplary embodiment of the present invention, a kind of Hydraulic Power Transmission System can comprise aforesaid radiation system.
According to one exemplary embodiment of the present invention, a kind of vehicle can comprise aforesaid Hydraulic Power Transmission System.
Said vehicle can be a scraper, and said Hydraulic Power Transmission System can provide power for the shovel fortune operation of said scraper.
Said radiation system can also comprise connector element, and said at least one accumulator can be installed in the place, inboard of the off hind wheel steel cage of said scraper through said connector element.
According to exemplary embodiment of the present invention; Because in radiation system, comprised accumulator; So can greatly reduce the pressure of the hydraulic fluid through sink and the fluctuation of flow, sink is played a very good protection, prolonged the working life of sink.
Description of drawings
Through detailed description below in conjunction with accompanying drawing, can more be expressly understood above of the present invention with other aspect, characteristic and other advantages, in the accompanying drawings:
Fig. 1 is the diagrammatic sketch that schematically shows according to the radiation system of exemplary embodiment of the present invention;
Fig. 2 is the plan view that illustrates according to the accumulator in the radiation system of exemplary embodiment of the present invention.
Embodiment
Hereinafter, will describe exemplary embodiment of the present invention in detail with reference to accompanying drawing.Yet exemplary embodiment of the present invention can be implemented with many different forms, and should not be limited to the example of setting forth here.On the contrary, provide these examples to make that the disclosure will be thoroughly also complete, and scope of the present invention is conveyed to those skilled in the art fully.For the sake of clarity, size and the relative size in layer and zone have been exaggerated in the accompanying drawings.In the accompanying drawings, identical label is represented components identical all the time.
Fig. 1 is the diagrammatic sketch that schematically shows according to the radiation system 1 of exemplary embodiment of the present invention.As shown in fig. 1, can comprise that according to the radiation system 1 of exemplary embodiment of the present invention hydraulic fluid flows into pipeline 2, sink 3 and hydraulic fluid and flows out pipeline 4.
Hydraulic fluid flows into pipeline 2 and can be connected between outside (for example, Hydraulic Power Transmission System, not shown) and the sink 3.As shown in fig. 1, hydraulic fluid can flow into pipeline 2 through hydraulic fluid along the direction of arrow from outside (that is Hydraulic Power Transmission System) and flow in the sink 3.According to current exemplary embodiment, hydraulic fluid can be mineral oil.Yet exemplary embodiment of the present invention is not limited thereto, and according to other exemplary embodiment, radiation system can be the various hydraulic fluid heat radiations of using in the Hydraulic Power Transmission System.
Sink 3 can dispel the heat to the hydraulic fluid that flows into pipeline 2 inflows from hydraulic fluid.Sink 3 can comprise heat dissipation pipeline, radiating fin and/or fan etc.When hydraulic fluid can flow in heat dissipation pipeline heat is discharged in the outside (for example, air), thus the temperature of reduction hydraulic fluid.Radiating fin can be set to combine with heat dissipation pipeline, so that bigger and area of contact air to be provided.Flowing of the air that can promote to contact with radiating fin with heat dissipation pipeline through fan is to improve radiating efficiency.
Hydraulic fluid flows out pipeline 4 and can be connected between sink 3 and the outside (for example, Hydraulic Power Transmission System, not shown).As shown in fig. 1, in sink 3, carried out the hydraulic fluid of heat radiation and can be along the direction of arrow from sink 3 flowed out pipeline 4 through hydraulic fluid and flow to the outside, for example, flow and get back in the Hydraulic Power Transmission System.
For hydraulic fluid is more effectively dispelled the heat, can adopt length, the diameter that reduces heat dissipation pipeline, the area that increases radiating fin that increases heat dissipation pipeline, the various means such as power that improve fan.For example, sink 3 can comprise the heat dissipation pipeline that diameter is very little, for example, and the capillary heat dissipation pipeline.For example, the minimum place of the diameter of capillary heat dissipation pipeline can be about 5mm.
Hydraulic Power Transmission System with said structure can be applied in the various vehicles, thinks that its various operations provide power.In one exemplary embodiment, said vehicle can for example be a scraper, and can operate for the shovel fortune of scraper according to the Hydraulic Power Transmission System of exemplary embodiment of the present invention provide power.For example, said scraper can be a TORO 1400E type electric LHD.
Place, middle deep such as large-scale ground such as the big Red Hill iron ore in Yuxi, mine, down-hole adopts sublevel caving method without sill pillar, has therefore adopted TORO 1400E type electric LHD.On the one hand, owing to down-hole road out-of-flatness, reason such as bend is many, the ore packing density is big, strengthened the load of scraper.On the other hand; TORO 1400E electric LHD has adopted programmable logic controller (PLC) (PLC) in the cable rolling system; PLC can carry out the linearity control of take-up and cable laying, to avoid the tension force too drastic variation with the variation of the folding and unfolding length of cable on the cable according to different working conditions such as the actual quantity of cable in the cable drum and take-up, cable laying, acceleration, brakings; Promptly; Guarantee that as far as possible quite (generally, cable rolling pressure, cable laying pressure are not to be constant to the required tension force of cable rolling, cable laying pressure and cable, and PLC can guarantee that the required tension force of cable rolling pressure, cable laying pressure and cable is suitable according to the difference of operating mode; In order to avoid cable rolling pressure, cable laying pressure is excessive and damage cable; Cable rolling pressure is too small and cause cable in time not regain, and is rolled by vehicle etc.) and (generally, the variation of cable rolling pressure, cable laying pressure can cause the variation of the flow of the radiation system of flowing through to reduce the amplitude of flowed fluctuation of hydraulic fluid; Because for example TORO 1400E type electric LHD has adopted variable displacement pump for the cable rolling system power to be provided, so flow can change along with the variation of feedback pressure).But along with the variation of cable tension force, in the Hydraulic Power Transmission System of TORO 1400E type electric LHD, the pressure and the flow that in the heat dissipation pipeline of sink, flow with the hydraulic fluid that dispels the heat also can correspondingly change.The pressure of hydraulic fluid and flowed fluctuation to the impact of the heat dissipation pipeline of sink also acute variation correspondingly, thereby have seriously influenced working life of heat dissipation pipeline and entire heat dissipation device.What in other words, the radiation system of the Hydraulic Power Transmission System of TORO 1400E type electric LHD is produced main influence is the cable rolling system.
The source of damage of the radiation system of the Hydraulic Power Transmission System of TORO 1400E type electric LHD mainly is: be included in the sink heat dissipation pipeline (for example; The capillary heat dissipation pipeline) aging back reduction in strength; Resisted not the hydraulic shock that hydraulic fluid produced of the heat dissipation pipeline of flowing through when TORO 1400E type electric LHD is worked; Such hydraulic shock can produce instantaneous high pressure, thereby possibly damage the capillary heat dissipation pipeline.Cause the aging reason of heat dissipation pipeline to mainly contain following binomial:
(1) the hydraulic fluid rerum natura worsens
Hydraulic fluid can decompose gradually at a certain temperature, go bad; Because the rotten back of hydraulic fluid character is unstable; Maybe with the material generation chemical reaction of heat dissipation pipeline; Therefore the material generation chemical reaction that long-term acidity that is full of in down-hole and organic gas also can heat dissipation pipelines in addition causes heat dissipation pipeline aging;
(2) heat dissipation pipeline material corrosion, dissolving
Hydraulic fluid is continuous-flow in heat dissipation pipeline, exists factors such as the temperature difference, impurity simultaneously, makes the material of heat dissipation pipeline that dissolving and corrosion take place; Therefore flow resistance increases; And make the thermal conduction characteristic deterioration of heat dissipation pipeline, and after the material of heat dissipation pipeline is corroded, can cause the reduction in strength of heat dissipation pipeline; Even possibly cause the corrosion failure of heat dissipation pipeline, therefore cause heat dissipation pipeline aging.
For above-mentioned reasons, limited by the interior operating conditions of well, wearing out of heat dissipation pipeline is inevitable.
Therefore; For prolonging the life-span of radiation system; The aging heat dissipation pipeline of protection is by the impact failure of the hydraulic fluid of flow therein, can also comprise accumulator 5 according to the radiation system 1 of exemplary embodiment of the present invention, the instantaneous pressure when reducing hydraulic fluid through radiation system 1 effectively.
As shown in fig. 1, can comprise an accumulator 5 according to the radiation system 1 of exemplary embodiment of the present invention.Yet exemplary embodiment of the present invention is not limited thereto.According to other exemplary embodiment, radiation system 1 can comprise a plurality of accumulators 5, and a plurality of accumulators 5 can be connected in parallel to each other, and so that the swept volume of expectation to be provided, this will be explained in more detail hereinafter.
Accumulator 5 can be the device that is used to store and discharge the pressure ability of hydraulic fluid.Specifically, when the executive component of Hydraulic Power Transmission System needs rapid movement, can side by side supply with hydraulic fluid by accumulator and oil hydraulic pump to oil hydraulic cylinder.Longer when the time of the executive component stop motion of Hydraulic Power Transmission System, and when needing pressurize, for cutting down the consumption of energy, make the oil hydraulic pump off-load, the hydraulic fluid that can utilize accumulator to store compensates the leakage loss of hydraulic fluid, keeps system pressure.In addition, accumulator can also be kept system pressure as emergent hydraulic fluid source in a period of time, avoid power supply to interrupt suddenly or oil hydraulic pump when breaking down oil sources interrupt and the accident that causes.When oil hydraulic pump starting or stop, hydrovalve is cut out suddenly or when switching-over, oil hydraulic cylinder starting or braking, can produce hydraulic shock in the Hydraulic Power Transmission System, can relax hydraulic shock, absorption system pulsation through accumulator is set.
Therefore; According to exemplary embodiment of the present invention; Accumulator 5 can be connected to hydraulic fluid and flow into pipeline 2, the instantaneous peak value pressure of the hydraulic fluid that produces when absorbing the scraper high load running before the sink 3 to flow at hydraulic fluid, thus (for example relax hydraulic fluid to sink 3; Therefore capillary heat dissipation pipeline in the sink) impact can significantly promote working life of sink 3.
According to exemplary embodiment of the present invention, one or more accumulators 5 can be bladder accumulator.Yet exemplary embodiment is not limited thereto.According to other exemplary embodiment, accumulator 5 also can be the accumulator of other types such as air bottle type accumulator, piston accumulator.
In addition, as shown in fig. 1, can also comprise vent relief valve 6 according to the radiation system 1 of current exemplary embodiment.Vent relief valve 6 can be connected hydraulic fluid with sink 3 parallelly connectedly and flow between pipeline 2 and the hydraulic fluid outflow pipeline 4.Vent relief valve 6 can be opened during more than or equal to the set pressure of vent relief valve 6 at system pressure, so that system pressure no longer increases, system is played overload protective function.
Though can prevent that the pressure of hydraulic fluid from increasing excessively through vent relief valve 6; But because the very slow reaction velocity of vent relief valve 6; So when moment in Hydraulic Power Transmission System produces high pressure; Vent relief valve 6 maybe not can be opened in time, possibly cause the very high hydraulic fluid of pressure to flow in the sink 3 like this, thus cause being included in element in the sink 3 such as aging heat dissipation pipeline etc. receive high pressure hydraulic fluid impact and damage.
Yet,, accumulator 5 is connected to hydraulic fluid flows into pipeline 2 according to current exemplary embodiment.Therefore, accumulator 5 can be before vent relief valve 6 be opened the instantaneous high pressure of absorption liquid hydraulic fluid, relax hydraulic fluid to the impact in the sink 3 such as the element of capillary heat dissipation pipeline etc., therefore significantly promote the working life of sink 3.
In Fig. 1, only show vent relief valve 6 be connected the example between hydraulic fluid inflow pipeline 2 and the hydraulic fluid outflow pipeline 4 parallelly connectedly with sink 3.Yet exemplary embodiment is not limited thereto.According to other exemplary embodiment; Vent relief valve 6 can be connected that hydraulic fluid flows into pipeline 2 and hydraulic fluid flows out between the pipeline 4 with sink 3 and accumulator 5 parallelly connectedly, promptly vent relief valve 6 and hydraulic fluid flow into position that pipeline 2 is connected can be at the upper reaches of the position that accumulator 5 and hydraulic fluid inflow pipeline 2 are connected.
To describe the method for the swept volume of confirming accumulator below in detail.
According to exemplary embodiment of the present invention, the swept volume V of accumulator
0Can satisfy following formula:
In the superincumbent formula, P
2For flow into the highest pressure (unit is Pa) that hydraulic fluid flows into the hydraulic fluid the pipeline from Hydraulic Power Transmission System.Under the situation of TORO 1400E type electric LHD, in the process of scraper shovel ore deposit during reversible bucket motor power (output) reach maximum value, flowing to hydraulic fluid, to flow into the pressure values of the hydraulic fluid in the pipeline also the highest, in experiment, utilizes pressure gauge to record P
2Be about 55bar, that is, and about 5500000Pa.
P
0Inflation pressure (unit is Pa) for accumulator.Usually flow into about 90% inflation of the operating pressure of pipeline by the hydraulic fluid that accumulator is installed.Because when the pressure that flows into pipeline when hydraulic fluid surpassed about 7bar, the vent relief valve of radiation system was opened, so the operating pressure of hydraulic fluid conduit is about 7bar, that is, and about 700000Pa.
M is for flowing into the gross mass (unit is kg) that hydraulic fluid flows into the hydraulic fluid the pipeline from Hydraulic Power Transmission System.Under the situation of TORO 1400E type electric LHD, the hydraulic fluid source of its Hydraulic Power Transmission System is provided by the quantitative hydraulic pump of an about 79L/min, so the peak rate of flow of this Hydraulic Power Transmission System is about 79L/min.Density as the mineral oil of hydraulic fluid can approximate 0.7kg/L; Scraper scraper bowl time spent of upset reaches about 1.8s, therefore flow into hydraulic fluid from this Hydraulic Power Transmission System and flows into hydraulic fluid quality m=(79/60) * 1.8 * 0.7=1.66 (kg) the pipeline.
V is that hydraulic fluid flows into the flow velocity (unit is m/s) in the pipeline at hydraulic fluid.Under the situation of TORO1400E type electric LHD; Flow velocity is that about 79L/min calculates and is 10.7m/s according to peak rate of flow under the nominal situation, that is, hydraulic fluid density is about 0.7kg/L; Hydraulic fluid flows into pipeline diameter and gets about 12.5mm; Then can calculate the oil pipe sectional area, the time is about 1.8s, so the flow velocity of liquid is v=1.66/ (0.7 * 0.0122 * 1.8)=10.7 (m/s) under the nominal situation.According to Bernoulli's equation, square being inversely proportional to the pipeline pressure values of the flow velocity of hydraulic fluid, therefore calculate hydraulic fluid v=3.8m/s when flowing in the pipeline pressure maximum value, that is, and P
0=7bar, P
2=55bar, under the nominal situation when (being 7bar) flow velocity of liquid be v=10.7m/s, then can calculate when pressure and be P to the maximum
0V=3.8m/s during=55bar.
Therefore, under the situation of TORO 1400E type electric LHD, the minimum swept volume that can calculate accumulator according to top formula is about 1.2L.
According to above result of calculation, under the situation of TORO 1400E type electric LHD, can select the accumulator of swept volume more than or equal to about 1.2L.Yet exemplary embodiment of the present invention is not limited thereto, and as stated, can comprise a plurality of accumulators 4 according to other the sink 1 of exemplary embodiment.For example; In the example of the TORO 1400E type electric LHD of describing in detail in the above; Can two the accumulator that is connected in parallel that swept volume is respectively about 0.75L be connected to hydraulic fluid and flow into pipeline 2; In this example, the nominal operation pressure of said two accumulators all can be for example about 65bar.Under these circumstances, being used for that said two accumulator apparatus are connected to connecting pipeline that hydraulic fluid flows into pipeline 2, can to select caliber d be that about 12.5mm, length L are the rubber high-voltage tube of about 1000mm.
Fig. 2 is the plan view that illustrates according to two accumulators that are connected in parallel in the radiation system of exemplary embodiment of the present invention.
As shown in Figure 2, can two accumulators 11 be connected with 12 and be fixed to accumulator ABAP Adapter 13.Be connected to accumulator ABAP Adapter 13 through connecting pipeline 14, so that two accumulators 11 and 12 are connected in parallel, and two accumulators 11 that will be connected in parallel and 12 are connected to hydraulic fluid and flow into pipeline 2 (not shown).
Limited the scope of its application because the accumulator volume that swept volume is bigger is bigger than normal, so, selected two less accumulators 11 of the swept volume that is connected in parallel and 12 for use according to exemplary embodiment of the present invention.Yet exemplary embodiment of the present invention is not limited thereto, and in other embodiment, can select to have the single accumulator of suitable swept volume, or has a plurality of accumulators of suitable total work volume.In addition, compare with the mode of being connected in series, the two or more accumulators that are connected in parallel more help absorbing impact when the absorbing low frequency rate is impacted, and filter effect is better.
In addition, the radiation system according to exemplary embodiment of the present invention can also comprise the connector element (not shown).For example, connector element can be arranged on accumulator ABAP Adapter 13 with the surperficial facing surfaces that is connected by connecting pipeline 14 on.In the example of the TORO 1400E type electric LHD of describing in detail in the above; Accumulator can be installed in the inboard place of the off hind wheel steel cage of scraper through connector element, therefore accumulator can be installed easily and flexibly and not influence the proper functioning of miscellaneous part.
According to exemplary embodiment of the present invention, through accumulator is installed in radiation system, the fluctuation of pressure in the heat dissipation pipeline of sink is approximately 0bar～25bar.Therefore, significantly reduced the destruction of system's hydraulic shock to heat dissipation pipeline, effectively prolonged sink working life, practiced thrift cost.
The working life of radiator, the use condition contrast was as shown in the table before and after installing the radiator protective gear additional.
As stated; According to exemplary embodiment of the present invention; The action principle of hydraulic shock is pulsed, relaxed to the absorption system that utilizes accumulator to have; The for example hydraulic oil sink of TORO 1400E type scraper is reequiped, its objective is in order to solve the hydraulic oil sink when the underground work of TORO 1400E type scraper for example and damage frequent problem.
According to exemplary embodiment of the present invention; Utilize accumulator to have the action principle of absorption system pulsation, mitigation hydraulic shock; Accumulator of parallel connection is as protective gear on the oil circuit before hydraulic oil passes through sink; The instantaneous peak value pressure that hydraulic circuit produces during with the high load running of absorption scraper relaxes the impact of hydraulic oil to the capillary pipeline of sink, therefore can significantly promote the working life of sink.
According to exemplary embodiment of the present invention; Because in radiation system, comprised accumulator; So can greatly reduce the pressure of the hydraulic fluid through sink and the fluctuation of flow, sink is played a very good protection, prolonged the working life of sink.
Though illustrated and described the example of exemplary embodiment of the present invention; But what those skilled in the art should understand that is; Exemplary embodiment of the present invention is not limited thereto; Do not breaking away under the situation of the spirit and scope of the present invention that limit like claim, can carry out various modifications these exemplary embodiments.
Claims (10)
1. a radiation system is characterized in that, said radiation system is the hydraulic fluid heat radiation of Hydraulic Power Transmission System, and said radiation system comprises that hydraulic fluid flows into pipeline, sink and hydraulic fluid and flows out pipeline,
Said hydraulic fluid flows into pipeline and is connected between said Hydraulic Power Transmission System and the said sink, and hydraulic fluid flows into pipeline from said Hydraulic Power Transmission System through said hydraulic fluid and flow to the said sink,
Said hydraulic fluid flows out pipeline and is connected between said sink and the said Hydraulic Power Transmission System, and hydraulic fluid flows through said hydraulic fluid outflow pipeline from said sink and gets back to the said Hydraulic Power Transmission System,
Wherein, said radiation system also comprises at least one accumulator, and said at least one accumulator is connected to said hydraulic fluid and flows into pipeline.
2. radiation system as claimed in claim 1 is characterized in that, said at least one accumulator is a bladder accumulator.
3. radiation system as claimed in claim 1 is characterized in that, said at least one accumulator is a plurality of accumulators that are connected in parallel with each other.
4. radiation system as claimed in claim 1 is characterized in that said radiation system also comprises vent relief valve, and said vent relief valve is connected said hydraulic fluid with said sink parallelly connectedly and flows between pipeline and the said hydraulic fluid outflow pipeline.
5. radiation system as claimed in claim 1 is characterized in that said sink comprises heat dissipation pipeline, and the hydraulic fluid that flow into the said sink from said hydraulic fluid inflow pipeline flows through said heat dissipation pipeline, to dispel the heat.
6. radiation system as claimed in claim 2 is characterized in that, total work volume V of said at least one accumulator
0Formula below satisfying:
Wherein, P
2For flow into the highest pressure that said hydraulic fluid flows into the hydraulic fluid the pipeline, P from said Hydraulic Power Transmission System
0Be the inflation pressure of said at least one accumulator, m is for flowing into the gross mass that said hydraulic fluid flows into the hydraulic fluid the pipeline from said Hydraulic Power Transmission System, and v is that hydraulic fluid flows into the flow velocity in the pipeline at said hydraulic fluid.
7. a Hydraulic Power Transmission System is characterized in that, said Hydraulic Power Transmission System comprises like any described radiation system of claim among the claim 1-6.
8. a vehicle is characterized in that, said vehicle comprises Hydraulic Power Transmission System as claimed in claim 7.
9. vehicle as claimed in claim 8 is characterized in that said vehicle is a scraper, and said Hydraulic Power Transmission System is that the shovel fortune operation of said scraper provides power.
10. vehicle as claimed in claim 9 is characterized in that said radiation system also comprises connector element, and said at least one accumulator is installed in the place, inboard of the off hind wheel steel cage of said scraper through said connector element.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110350147.XA CN102410286B (en) | 2011-11-08 | 2011-11-08 | Cooling system, hydraulic transmission system comprising same and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110350147.XA CN102410286B (en) | 2011-11-08 | 2011-11-08 | Cooling system, hydraulic transmission system comprising same and vehicle |
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| CN102410286A true CN102410286A (en) | 2012-04-11 |
| CN102410286B CN102410286B (en) | 2014-05-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113216313A (en) * | 2021-06-25 | 2021-08-06 | 三一重机有限公司 | Hydraulic control system of breaking hammer and excavator |
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