CN101892894A - Hydraulically-driven diesel radiating system and method thereof - Google Patents
Hydraulically-driven diesel radiating system and method thereof Download PDFInfo
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- CN101892894A CN101892894A CN2010102092828A CN201010209282A CN101892894A CN 101892894 A CN101892894 A CN 101892894A CN 2010102092828 A CN2010102092828 A CN 2010102092828A CN 201010209282 A CN201010209282 A CN 201010209282A CN 101892894 A CN101892894 A CN 101892894A
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- intercooler
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- 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
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention provides a hydraulically-driven diesel radiating system. The system comprises a hydraulic pump, an intercooler, a water cooler, a pilot-operated overflow valve and a thermo-sensitive overflow valve, wherein the intercooler is connected to a gear oil pump; the water cooler is connected in series with the intercooler; the intercooler and the water cooler are respectively connected in parallel with the pilot-operated overflow valve; and the thermo-sensitive overflow valve is connected to the water cooler and connected with a remote pressure-regulating port of the pilot-operated overflow valve which is connected in parallel with the water cooler. Therefore, in the hydraulically-driven diesel radiating system, the intercooler and the water cooler are independently arranged and share one hydraulic pump; and two hydraulic motors are used for driving two fans to radiate heat of the intercooler and the water cooler respectively, so that automatic temperature balance adjustment is realized, the power consumption of a diesel radiator is greatly reduced and the radiating efficiency is improved.
Description
Technical field
The present invention relates to a kind of diesel radiating system and method thereof, particularly, relate to a kind of hydraulically powered diesel radiating system and method thereof.
Background technique
In engineering machinery, the temperature of engine charge is low more, and airborne oxygen content is just high more.Correspondingly, air density strengthens thereupon, and then the effectiveness of the burning in the combustion process is just good more.Therefore, in order to improve cylinder air supply and supply gas pressure, diesel engine of diesel locomotive generally adopts intercooler.Intercooler can cool off pressurized air, thereby reduces air temperature, improves air density, makes the power of diesel engine improve, and heat load reduces.
For parts such as motor are dispelled the heat, also adopt cooling liquid to dispel the heat usually.The cooling liquid radiation system is to be cooling medium with the cooling liquid.The heat that diesel engine produces is at first passed to cooling liquid by parts, by flowing of cooling liquid heat is taken away again, then spills in the atmosphere.Cooling liquid after the heat radiation comes back to heating parts place, and cooling procedure is carried out in circulation.Usually can adopt water as cooling liquid.
At present, the diesel engine that uses in the engineering machinery uses absolutely empty ICS intercooler system and cooling liquid radiation system to dispel the heat simultaneously.Traditional mounting type all places the motor end with intercooler and water cooler.The fan that carries by motor is to intercooler and water cooler is dried or air draught, thereby realizes heat exchange.But in the above-mentioned radiating mode, when engine operation, intercooler and water cooler are worked simultaneously, can't carry out auto-control according to variation of temperature, make two radiators work alone respectively, thereby cause the efficient of entire heat dissipation system relatively low, and power consumption is big.
Summary of the invention
The object of the present invention is to provide a kind of hydraulically powered diesel radiating system and method thereof, wherein radiator separates installation with motor, can the working state of water cooler optionally be set according to the applying working condition of diesel engine, thereby improve the efficient of radiator, reduce energy consumption.
To achieve these goals, a kind of hydraulically powered diesel radiating system of the present invention, it comprises oil hydraulic pump, intercooler, water cooler, pilot operated compound relief valve and thermal-sensitive relief valve, wherein, described intercooler is connected on the described gear oil pump, described water cooler is connected on the described intercooler, described intercooler and water cooler are in parallel with a pilot operated compound relief valve respectively, and described thermal-sensitive relief valve is connected on the described water cooler, and are connected with the long-range pressure modulating opening of in parallel pilot operated compound relief valve on the water cooler.
Above-mentioned hydraulically powered diesel radiating system wherein, respectively comprises an oil hydraulic motor in described intercooler and the described water cooler, the fan that is used to drive separately dispels the heat.
Above-mentioned hydraulically powered diesel radiating system, wherein, one-way valve also respectively in parallel on described intercooler and the described water cooler, described one-way valve is used for described oil hydraulic motor carries out repairing to it when stopping.
Above-mentioned hydraulically powered diesel radiating system, wherein, described oil hydraulic pump is a gear oil pump.
In addition, the present invention also provides a kind of heat dissipating method as above-mentioned hydraulically powered diesel radiating system, and it comprises the steps;
Step 1. starts diesel engine, and under the driving of oil hydraulic pump, intercooler and water cooler are started working respectively;
Step 2. is along with water temperature constantly rises, and the linear rising of corresponding water temperature is pressed in the work of thermal-sensitive relief valve, and the oil hydraulic motor rotating speed of water cooler also improves constantly;
When step 3. reached the terminal point control temperature of thermal-sensitive relief valve when water temperature, the rotating speed of oil hydraulic motor reached maximum value, and it is constant that then described rotating speed keeps, and no longer rises with the rising of water temperature, and the working pressure of thermal-sensitive relief valve also remains unchanged;
Step 4. is along with the continuous firing of fan, water temperature descends gradually, before water temperature is lower than the terminal point control temperature of thermal-sensitive relief valve, described rotating speed and working pressure remain unchanged, water temperature is lower than the terminal point control temperature of thermal-sensitive relief valve, be higher than the thermal-sensitive relief valve play the point control temperature time, described rotating speed and working pressure descend accordingly, when water temperature be lower than the thermal-sensitive relief valve play the point control temperature time, described and working pressure is tending towards 0, oil hydraulic motor stops operating gradually, thereby realizes with the automatic adjusting of water temperature variation to water cooler.
Above-mentioned hydraulically powered diesel radiating system method of work, wherein, in the heat radiation process, intercooler remains proper functioning, have only when the working pressure of intercooler oil hydraulic motor surpasses the upper pressure limit threshold value of the pilot operated compound relief valve in parallel with intercooler, just open described pilot operated compound relief valve automatically, the working pressure of intercooler oil hydraulic motor is no longer risen.
Above-mentioned hydraulically powered diesel radiating system method of work, wherein, have only when the working pressure of the oil hydraulic motor of water cooler surpasses the upper pressure limit threshold value of the pilot operated compound relief valve in parallel with water cooler, just open the pilot operated compound relief valve in parallel automatically, the working pressure of the oil hydraulic motor of water cooler is no longer risen with water cooler.
Therefore, a kind of hydraulically powered diesel radiating system of the present invention and method thereof independently are provided with intercooler and water cooler, and use two fans of fluid motor-driven separately intercooler and water cooler to be dispelled the heat, thereby realize the temperature Automatic Balance Regulation, greatly reduce the power consumption of diesel engine radiator, improved its radiating efficiency.
Description of drawings
Fig. 1 is the structured flowchart of a kind of hydraulically powered diesel radiating system of the present invention;
Fig. 2 is the temperature and pressure control curve of thermal-sensitive relief valve of the water cooler of a kind of hydraulically powered diesel radiating system of the present invention;
Fig. 3 is the thermal-sensitive relief valve and the motor rotary speed graph of a relation of a kind of hydraulically powered diesel radiating system of the present invention.
Embodiment
The present invention will be further described in detail below in conjunction with accompanying drawing.
At hydraulically powered diesel radiating system of the present invention radiator is separated installation with motor, drive intercooler and water cooler respectively by special motor, make intercooler and water cooler work alone, speed is independent of each other.Wherein, intercooler is just work when diesel engine starting, and water cooler then can be realized control automatically according to the variation of coolant temperature, thereby makes that the entire heat dissipation system is more efficient, and is energy-conservation.
Fig. 1 is the structured flowchart of hydraulically powered diesel radiating system of the present invention.As shown in the figure, hydraulically powered diesel radiating system of the present invention comprises oil hydraulic pump 1, intercooler 2, water cooler 5, pilot operated compound relief valve 4, and thermal-sensitive relief valve 6.Wherein, intercooler 2 is connected on the oil hydraulic pump 1, and water cooler 5 then is connected in series on the intercooler 2.Pilot operated compound relief valve 4 respectively in parallel on intercooler 2 and water cooler 5, and thermal-sensitive relief valve 6 is connected on the described water cooler 5, and be connected with the long-range pressure modulating opening of pilot operated compound relief valve 4 in parallel on the water cooler 5.In the present invention, that oil hydraulic pump 1 adopts is gear oil pump G5-32, and it can be whole system pressure oil is provided, and is the power source of whole diesel radiating system.Thermal-sensitive relief valve 6 is a direct-acting overflow valve, and it includes thermosensitive element.This thermosensitive element can change according to water temperature and comes the control spring pretightening force, thereby realizes the setting pressure of this thermal-sensitive relief valve 6 and the transformation of scale between the water temperature.
Particularly, in intercooler 2 and water cooler 5, be installed in parallel an oil hydraulic motor respectively, be used to drive separately fan to dispel the heat.In the present invention, the oil hydraulic motor that adopts in intercooler 2 is GM5-25, and the oil hydraulic motor that adopts in the water cooler 5 is GM5-20.In addition, at the two ends of intercooler 2 and water cooler 5 one-way valve 3 also respectively in parallel.One-way valve 3 is used to protect above-mentioned oil hydraulic motor, when oil hydraulic motor stops, its filler opening is carried out repairing, thereby when avoiding fuel cut-off, oil hydraulic motor is damaged because of stopping rapidly.Pilot operated compound relief valve 4 in parallel then is used to control the pressure of above-mentioned oil hydraulic motor, just no longer rises after making it reach the certain upper limit threshold value, thereby controls the rotating speed of oil hydraulic motor indirectly, realizes the adjustment to intercooler 2 and water cooler 5 power.
Introduce the method for work of hydraulically powered diesel radiating system of the present invention below in detail.
When diesel engine starting, motor begins igniting, and under the driving of oil hydraulic pump 1, the entire heat dissipation system starts working.Intercooler 2 and water cooler 5 turn round respectively, with outside distribute heat, carry out system radiating.Wherein, behind engine ignition, intercooler 2 just commences work without delay, and the heat radiation power of intercooler 2 does not need to adjust.Therefore, the working pressure of the oil hydraulic motor of intercooler 2 also need not to adjust in real time.In hydraulically powered diesel radiating system of the present invention, than calculating, if when the rotating speed of motor is 800-2100r/min, the rotating speed of the oil hydraulic motor in the intercooler 2 is about 1024-2750r/min according to the discharge capacity of gear oil pump and oil hydraulic motor.At this moment, the rotating speed of oil hydraulic motor is in reasonable range, thereby the air quantity of fan is also reasonable, gets final product so the upper limit threshold of pilot operated compound relief valve only need be set.Usually, the working pressure of the oil hydraulic motor of intercooler 2 is 4-8MPa.Therefore, correspondingly, the upper threshold of the pilot operated compound relief valve 4 of intercooler 2 parallel connections is 10MPa.When the entire heat dissipation system exceeds above-mentioned pressure owing to fault, pilot operated compound relief valve 4 will be opened voluntarily, no longer rise with the working pressure of the oil hydraulic motor that guarantees intercooler 2, thereby protection entire heat dissipation system not be damaged.
For water cooler 5, it is controlled jointly by thermal-sensitive relief valve 6 and pilot operated compound relief valve 4.Usually, the temperature of the cooling liquid in the water cooler 5 is controlled between 70-110 ℃, and a point control temperature of thermal-sensitive relief valve 6 is 82 ℃, and the setting working pressure is 0.7MPa; Its terminal point control temperature is 92 ℃, and the setting working pressure is 21MPa.Fig. 2 is the temperature and pressure control curve of thermal-sensitive relief valve.As seen from the figure, the temperature of thermal-sensitive relief valve 6 is high more, and it is just big more that it sets working pressure, and the two is a linear relationship.In hydraulically powered diesel radiating system of the present invention, when water temperature reached 82 ℃, the setting working pressure of thermal-sensitive relief valve 6 was 0.7MPa, and the threshold value that carries pilot valve of pilot operated compound relief valve 4 is 14MPa, then this moment, water cooler 5 carries out work with the pressure of 0.7MPa.When the rotating speed of motor was 2100r/min, the rotating speed of the oil hydraulic motor of water cooler 5 was about 250r/min.Along with the continuous rising of water temperature, the pressure of water cooler 5 is linear to rise, and the rotating speed of corresponding oil hydraulic motor is also accelerated.When water temperature reached 88 ℃, the working pressure of thermal-sensitive relief valve 6 was 12MPa, and the rotating speed of oil hydraulic motor also reaches the maximum value of 3300r/min.Then, water temperature continue to rise, and when the fan of water cooler 5 has reached maximum load, rotating speed no longer improves.Therefore, the working pressure of water cooler 5 no longer rises, and the rotating speed of oil hydraulic motor also no longer rises.Along with the continuous firing of fan, water temperature descends gradually.Be lower than before 88 ℃ in water temperature, fan keeps the rotating speed of 3300r/min always.After water temperature was lower than 88 ℃, the working pressure of water cooler 5 began to descend, and the rotating speed of oil hydraulic motor also descends accordingly, and after water temperature was lower than 82 ℃, the setting pressure of thermal-sensitive relief valve 6 was tending towards 0, and oil hydraulic motor also stops operating gradually.The concrete plotted curve that Fig. 3 changes for above-mentioned relation among the present invention.When the working pressure of the oil hydraulic motor of water cooler during greater than the upper threshold of the pilot operated compound relief valve in parallel with it, this pilot operated compound relief valve is opened voluntarily, thereby makes the working pressure of oil hydraulic motor of water cooler no longer rise, with protection entire heat dissipation system.
By above-mentioned structural design and parameter setting, guaranteed the proper functioning running of intercooler, realized that water cooler changes adjusting wind speed automatically with water temperature.And only provide pressure for intercooler and water cooler simultaneously among the present invention with an oil hydraulic pump, and by the pilot operated compound relief valve of parallel connection as safety valve, guaranteed the safe and reliable operation of radiation system.
Therefore, a kind of hydraulically powered diesel radiating system of the present invention and method thereof independently are provided with intercooler and water cooler, the two shared oil hydraulic pump, and use two fans of two fluid motor-driven respectively intercooler and water cooler to be dispelled the heat, thereby realize the Automatic Balance Regulation of temperature, greatly reduce the power consumption of diesel engine radiator, improved radiating efficiency.
More than specific embodiments of the invention are described in detail, but the present invention is not restricted to specific embodiment described above, it is just as example.To those skilled in the art, any equivalent modifications that this hydraulically powered diesel radiating system and method thereof are carried out and substituting also all among category of the present invention.Therefore, not breaking away from impartial conversion and the modification of having done under the spirit and scope of the present invention, all should contain within the scope of the invention.
Claims (7)
1. hydraulically powered diesel radiating system, it is characterized in that, comprise oil hydraulic pump, intercooler, water cooler, pilot operated compound relief valve and thermal-sensitive relief valve, wherein, described intercooler is connected on the described gear oil pump, described water cooler is connected on the described intercooler, described intercooler and water cooler are in parallel with a pilot operated compound relief valve respectively, and described thermal-sensitive relief valve is connected on the described water cooler, and are connected with the long-range pressure modulating opening of in parallel pilot operated compound relief valve on the water cooler.
2. hydraulically powered diesel radiating system according to claim 1 is characterized in that, respectively comprises an oil hydraulic motor in described intercooler and the described water cooler, and the fan that is used to drive separately dispels the heat.
3. hydraulically powered diesel radiating system according to claim 2 is characterized in that, one-way valve also respectively in parallel on described intercooler and the described water cooler, and described one-way valve is used for described oil hydraulic motor carries out repairing to it when stopping.
4. hydraulically powered diesel radiating system according to claim 1 is characterized in that, described oil hydraulic pump is a gear oil pump.
5. the heat dissipating method of a hydraulically powered diesel radiating system as claimed in claim 1 is characterized in that, comprises the steps;
Step 1. starts diesel engine, and under the driving of oil hydraulic pump, intercooler and water cooler are started working respectively;
Step 2. is along with water temperature constantly rises, and the linear rising of corresponding water temperature is pressed in the work of thermal-sensitive relief valve, and the oil hydraulic motor rotating speed of water cooler also improves constantly;
When step 3. reached the terminal point control temperature of thermal-sensitive relief valve when water temperature, the rotating speed of oil hydraulic motor reached maximum value, and it is constant that then described rotating speed keeps, and no longer rises with the rising of water temperature, and the working pressure of thermal-sensitive relief valve also remains unchanged;
Step 4. is along with the continuous firing of fan, water temperature descends gradually, before water temperature is lower than the terminal point control temperature of thermal-sensitive relief valve, described rotating speed and working pressure remain unchanged, water temperature is lower than the terminal point control temperature of thermal-sensitive relief valve, be higher than the thermal-sensitive relief valve play the point control temperature time, described rotating speed and working pressure descend accordingly, when water temperature be lower than the thermal-sensitive relief valve play the point control temperature time, described and working pressure is tending towards 0, oil hydraulic motor stops operating gradually, thereby realizes with the automatic adjusting of water temperature variation to water cooler.
6. hydraulically powered diesel radiating system method of work according to claim 5, it is characterized in that, in the heat radiation process, intercooler remains proper functioning, have only when the working pressure of intercooler oil hydraulic motor surpasses the upper pressure limit threshold value of the pilot operated compound relief valve in parallel with intercooler, just open the pilot operated compound relief valve in parallel automatically, the working pressure of intercooler oil hydraulic motor is no longer risen with intercooler.
7. hydraulically powered diesel radiating system method of work according to claim 5, it is characterized in that, have only when the working pressure of the oil hydraulic motor of water cooler surpasses the upper pressure limit threshold value of the pilot operated compound relief valve in parallel with water cooler, just open the pilot operated compound relief valve in parallel automatically, the working pressure of the oil hydraulic motor of water cooler is no longer risen with water cooler.
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| CN2010102092828A CN101892894A (en) | 2010-06-24 | 2010-06-24 | Hydraulically-driven diesel radiating system and method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102758685A (en) * | 2012-08-13 | 2012-10-31 | 苏州工业园区驿力机车科技有限公司 | Independent type full-temperature-control hydraulic drive fan cooling system |
| CN102758684A (en) * | 2012-08-13 | 2012-10-31 | 苏州工业园区驿力机车科技有限公司 | Independent type full-temperature-control hybrid drive fan cooling system |
| CN102817692A (en) * | 2011-11-30 | 2012-12-12 | 凯迈(洛阳)机电有限公司 | Engine thermal management system |
| CN102896014A (en) * | 2011-07-27 | 2013-01-30 | 河南新艾卡橡胶工业有限公司 | Fully-automatic hydraulic fine rubber powder machine |
| CN103334825A (en) * | 2013-07-08 | 2013-10-02 | 龙口中宇热管理***科技有限公司 | Compound type cooling system for engine and vehicle using same |
| CN103415663A (en) * | 2011-03-09 | 2013-11-27 | 哈姆股份公司 | Self-propelled construction device, in particular a soil compactor |
| CN104912876A (en) * | 2015-04-21 | 2015-09-16 | 合肥皖液液压元件有限公司 | Energy-saving emission-reduction gear motor |
| CN106150652A (en) * | 2016-06-27 | 2016-11-23 | 广东康菱动力科技有限公司 | Oil-electric engine group control method and device |
| CN107524645A (en) * | 2017-09-11 | 2017-12-29 | 洛阳涧光特种装备股份有限公司 | A kind of independent loops filter temperature control water cooling hydraulic system |
| CN109707691A (en) * | 2019-02-18 | 2019-05-03 | 西安庆安航空试验设备有限责任公司 | A kind of pressure control device of thermal-hydraulic system |
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| CN103415663A (en) * | 2011-03-09 | 2013-11-27 | 哈姆股份公司 | Self-propelled construction device, in particular a soil compactor |
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| CN103334825A (en) * | 2013-07-08 | 2013-10-02 | 龙口中宇热管理***科技有限公司 | Compound type cooling system for engine and vehicle using same |
| CN104912876A (en) * | 2015-04-21 | 2015-09-16 | 合肥皖液液压元件有限公司 | Energy-saving emission-reduction gear motor |
| CN106150652A (en) * | 2016-06-27 | 2016-11-23 | 广东康菱动力科技有限公司 | Oil-electric engine group control method and device |
| CN107524645A (en) * | 2017-09-11 | 2017-12-29 | 洛阳涧光特种装备股份有限公司 | A kind of independent loops filter temperature control water cooling hydraulic system |
| CN107524645B (en) * | 2017-09-11 | 2023-09-29 | 洛阳涧光特种装备股份有限公司 | Independent circulating filtering temperature control water cooling hydraulic system |
| CN109707691A (en) * | 2019-02-18 | 2019-05-03 | 西安庆安航空试验设备有限责任公司 | A kind of pressure control device of thermal-hydraulic system |
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Open date: 20101124 |