CN201568405U - Hydraulic drive system with off-line hydraulic oil cooling loop - Google Patents
Hydraulic drive system with off-line hydraulic oil cooling loop Download PDFInfo
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- CN201568405U CN201568405U CN 200920230048 CN200920230048U CN201568405U CN 201568405 U CN201568405 U CN 201568405U CN 200920230048 CN200920230048 CN 200920230048 CN 200920230048 U CN200920230048 U CN 200920230048U CN 201568405 U CN201568405 U CN 201568405U
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Abstract
The utility model relates to a hydraulic drive system with an off-line hydraulic oil cooling loop, belonging to the field of hydraulic drive devices. The hydraulic drive system with the off-line hydraulic oil cooling loop comprises a hydraulic drive work loop and an off-line cooling loop, wherein the hydraulic drive work loop comprises a power main pump, a control portion, an executing portion and an oil tank, wherein the power main pump pumps hydraulic oil in the oil tank, and makes hydraulic oil return to the oil tank after being transported to the executing portion to do work through the control portion. The hydraulic drive system is characterized in that the off-line cooling loop comprises a power auxiliary pump, a radiator, a hydraulic drive work loop and an oil tank, wherein the power auxiliary pump pumps hydraulic oil which returns to the oil tank from the hydraulic drive work loop, and the hydraulic oil returns to the oil tank after radiating heat by the radiator. The design avoids unnecessary extra energy consumption, lowers energy consumption under the premise of guaranteeing system radiation power, maximally reduces the capacity of the radiator, reduces and packages a hydraulic device system, and achieves the optimization of configuration of the hydraulic drive device and the working environment of operators.
Description
Technical field
The utility model is provided with the Hydraulic Power Transmission System of the outer hydraulic oil cooling circuit of line, belongs to hydraulic transmission equipment field.
Background technique
The best serviceability temperature of the hydraulic system hydraulic oil that engineering equipment uses is 20 ℃～60 ℃, will inevitably bring the heating of hydraulic transmission working medium-hydraulic oil in the working procedure, the reason that Hydraulic Power Transmission System causes hydraulic oil temperature to raise has two: one, and the hydraulic transmission main pump is behind fuel tank sucking-off hydraulic oil, high pressure oil is transported to the heat that the cyclic process of effective acting that do-part carries out produces, the 2nd, the heat that hydraulic tubing resistance, hydraulic element work etc. is produced by control section.Therefore, heat radiation is a critical part of hydraulic system, and usually the radiating mode that adopts is that oil circuit in system installs radiator additional, and radiator power is generally 1/3rd of original machine power.Shown in figure one, this cooling system effectively prerequisite of work is: power section, control section, do-part all must be in working order, indispensable, only control and do-part are that hydraulic oil radiator competence exertion when mobile is renderd a service in work in oil hydraulic circuit, and cooling system just can work.But any one engineering equipment in fact, when its power section work, its control and do-part can not worked omnidistance and with all strength, its oil hydraulic circuit heating value can not be omnidistance specified heating yet, therefore, by existing conventional at oil circuit layout radiator, it is relative with size big to certainly exist radiator rating, and engineering equipment is not compact, etc. shortcoming, along with continuous development with hydraulicdriven various engineering equipments, this equipment is also had higher requirement to engineering equipment and hydraulic transmission except that satisfying basic work functions, and requiring is not influencing under the system radiating power condition, can reduce radiator rating to the greatest extent, compact systems and equipment.
The model utility content
The purpose of this utility model provides a kind of Hydraulic Power Transmission System that the outer hydraulic oil cooling circuit of line is set, so that, cut down the consumption of energy guaranteeing to reduce radiator rating to greatest extent under the system radiating power condition, reduce and compact hydraulic equipment system, optimize equipment configurations and operator's working environment.
The purpose of this utility model realizes by following scheme:
This is provided with the Hydraulic Power Transmission System of the outer hydraulic oil cooling circuit of line, cooling off loop sets outward by hydraulic transmission work loop and line becomes, hydraulic transmission work loop is by the power main pump, control partly, carrying out part and fuel tank forms, hydraulic oil in the power main pump suction fuel tank, by control partly be delivered to carry out partly acting after, hydraulic oil is back to fuel tank; Characteristics are that line cools off the loop outward by the auxilliary pump of power, and radiator and hydraulic transmission work loop fuel tank are formed, and the auxilliary pump of power aspirates the hydraulic oil that is back to fuel tank by hydraulic transmission work loop, is back to this fuel tank behind radiator heat-dissipation.
The design cools off two loops, loop outward by hydraulic transmission work loop and line and forms, there is kinetic pump separately in two loops, but shared same fuel tank, the hydraulic oil in hydraulic transmission work loop is by after the work system acting, the hydraulic oil that heats up is back to fuel tank, line cools off the loop outward then according to design, the hydraulic oil that has heated up in this fuel tank will be returned, deliver to radiator, behind radiator heat-dissipation, the hydraulic oil of radiating and cooling is back to this fuel tank, so move in circles, avoided unnecessary extra energy consumption, under assurance system radiating power prerequisite, cut down the consumption of energy, reduce radiator rating to greatest extent, reduce and compact hydraulic equipment system, realized the optimization of hydraulic transmission equipment configurations and operator's working environment.
Radiator can carry out the minimizing of ratio according to the working level of this Equipment Control and do-part reality, thereby has not only satisfied actual demand but also reduced the specification of radiator, reaches the compact devices needs.
Description of drawings
Fig. 1 prior art Hydraulic Power Transmission System hydraulic oil circulation loop schematic representation
Fig. 2 the utility model Hydraulic Power Transmission System schematic representation
Specific embodiments
Be example now, illustrate how the utility model is implemented with 900 tons of carrying implements of Line for Passenger Transportation matching equipment that the Hydraulic Power Transmission System of hydraulic oil cooling circuit outside the line is set by the utility model.
900 tons of carrying implements of this construction equipment, existing hydraulic system is the direct cooling type cooling, fully loaded work uses power to be about 2 * 300kW, the main pump flow is about 4 * 190L/min, and by 1 day 8 hours, be 0.8 * 4=3.2 hour fully loaded service time substantially, gross calorific power is 2 * 288kW, account for 40% of the whole circulation time, and be evenly distributed on whole circulation in the time period, all the other 4.8 hours equipment are in to be waited for or the underloading working state.By posterior infromation, hour heating value of system is about 1/3rd of use power during fully loaded the use, be about 2 * 90kW, adopt existing conventional oil hydraulic circuit cooling system (casting aside the influence that pipeline and fuel tank have some thermolysiss), just can reach thermal equilibrium according to heat radiation power and its radiator of flow radiator that need to select 2 specifications for use be T9.
The design of employing the utility model, 900 tons of carrying implements of this construction equipment are provided with the Hydraulic Power Transmission System of the outer hydraulic oil cooling circuit of line, as shown in Figure 2, its right half part is the equipment hydraulic system circulation schematic representation that effectively does work, left-half is that the hydraulic system line cools off the circulation schematic representation outward, the hydraulic oil of heating finally is to get back to fuel tank, reduces the temperature of hydraulic oil in the fuel tank and is then undertaken by the outer hydraulic oil circuit cooling system of hydraulic system line.
As previously mentioned, it is 2 * 288kW that 0.8 * 4 hour gross calorific power is used in this equipment heavy duty, that is to say that the heating value that 2 * 288kW is arranged in the fuel tank need dissipate, heat dissipating capacity only is 2 * 36kW if the heating value of this 2 * 288kW is quantized in 8 hours whole circulation time its mean hours, numeral has significantly reduced, only need the independently line of configuration one cover non-stop run in 8 hours to cool off the circulatory system outward: auxilliary pump is behind the hydraulic oil of fuel tank sucking-off heat, be delivered directly to radiator, the cooled hydraulic oil that dispels the heat is directly got back to fuel tank.Therefore, only 2 T8 radiators need be set and get final product, and the physical dimension of T8 radiator only be T9 half, thus remarkable compactness system.
Select the radiator of 2 T8 for use, auxilliary pump duty is about 2 * 150L/min, its mean hours heat dissipating capacity be about 2 * 48kW, the heat radiation total amount was 2 * 384kW in 8 hours, using 0.8 * 4 hour gross calorific power greater than the equipment heavy duty is 2 * 288kW, is feasible on the principle.Though have in the fuel tank hydraulic fluid temperature situation that fluctuates up and down in practice, during as site test, high ambient temperature is under 38 ℃ of situations, worked 8 hours, the hydraulic fluid temperature scope is 30 ℃～55 ℃ in the fuel tank, but still in the best serviceability temperature scope of hydraulic oil, satisfies the practice requirement.
Claims (1)
1. the Hydraulic Power Transmission System of the outer hydraulic oil cooling circuit of line is set, cooling off loop sets outward by hydraulic transmission work loop and line becomes, hydraulic transmission work loop is by the power main pump, control partly, carrying out part and fuel tank forms, hydraulic oil in the power main pump suction fuel tank, by control partly be delivered to carry out partly acting after, hydraulic oil is back to fuel tank, it is characterized in that line cools off the loop outward by the auxilliary pump of power, radiator and hydraulic transmission work loop fuel tank are formed, and the auxilliary pump of power aspirates the hydraulic oil that is back to fuel tank by hydraulic transmission work loop, is back to this fuel tank behind radiator heat-dissipation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920230048 CN201568405U (en) | 2009-11-24 | 2009-11-24 | Hydraulic drive system with off-line hydraulic oil cooling loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920230048 CN201568405U (en) | 2009-11-24 | 2009-11-24 | Hydraulic drive system with off-line hydraulic oil cooling loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568405U true CN201568405U (en) | 2010-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920230048 Expired - Lifetime CN201568405U (en) | 2009-11-24 | 2009-11-24 | Hydraulic drive system with off-line hydraulic oil cooling loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568405U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362899A (en) * | 2012-04-10 | 2013-10-23 | 斗山工程机械（山东）有限公司 | Pilot, heat dissipation and integration hydraulic system and loading machine |
| CN103403361A (en) * | 2010-12-29 | 2013-11-20 | 伊顿公司 | Case flow augmenting arrangement for cooling variable speed electric motor-pumps |
-
2009
- 2009-11-24 CN CN 200920230048 patent/CN201568405U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103403361A (en) * | 2010-12-29 | 2013-11-20 | 伊顿公司 | Case flow augmenting arrangement for cooling variable speed electric motor-pumps |
| CN103403361B (en) * | 2010-12-29 | 2015-11-25 | 伊顿公司 | For cooling the housing fluid aggrandizement apparatus of variable-speed electric motor-pump |
| CN103362899A (en) * | 2012-04-10 | 2013-10-23 | 斗山工程机械（山东）有限公司 | Pilot, heat dissipation and integration hydraulic system and loading machine |
| CN103362899B (en) * | 2012-04-10 | 2016-10-19 | 斗山工程机械（山东）有限公司 | Guide, heat radiation integrated hydraulic system and loader |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |
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| CX01 | Expiry of patent term |