CN102705307B - Engineering vehicle, hydraulic oil preheating device and method - Google Patents
Engineering vehicle, hydraulic oil preheating device and method Download PDFInfo
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- CN102705307B CN102705307B CN201210192595.6A CN201210192595A CN102705307B CN 102705307 B CN102705307 B CN 102705307B CN 201210192595 A CN201210192595 A CN 201210192595A CN 102705307 B CN102705307 B CN 102705307B
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Abstract
The invention discloses an engineering vehicle, a hydraulic oil preheating device and a hydraulic oil preheating method. The hydraulic oil preheating device comprises a heat exchanger, an oil inlet pipe, an oil outlet pipe and an oil pump, wherein a first port of the heat exchanger is connected with an exhaust pipe of the engineering vehicle, and is communicated with a second port of the heat exchanger; one end of the oil inlet pipe is connected with a third port of the heat exchanger, and the other end of the oil inlet pipe is used for connection with a hydraulic oil tank of the engineering vehicle; one end of the oil outlet pipe is connected with a fourth port of the heat exchanger, and the other end of the oil outlet pipe is connected with the hydraulic oil tank; the fourth port and third port of the heat exchanger are communicated; and the oil pump is used for pumping hydraulic oil in the hydraulic oil tank into the heat exchanger for heat exchange, and enabling the hydraulic oil to flow back into the hydraulic oil tank. The hydraulic oil of the engineering vehicle is preheated by tail gases of the engineering vehicle; and therefore, by the preheating method, energy sources are saved. In addition, convective heat exchange is adopted between the hydraulic oil and the tail gases, so that the heat exchange efficiency is high, and the preheating time is short.
Description
Technical field
The present invention relates to engineering vehicle field, particularly a kind of engineering vehicle, hydraulic oil preheating device and method.
Background technique
Engineering vehicle is generally by hydraulic system transfers power.Hydraulic system generally comprises hydraulic oil container, oil pump, pipeline and valve etc., is filled with hydraulic oil in it.When the temperature is low, hydraulic pressure oil viscosity can increase, and makes oil pump suction difficulty, affects the normal work of hydraulic actuator.For this situation, solution conventional is at present by hydraulic oil preheating by Preheating unit.Be specially: in the hydraulic oil container of engineering vehicle, heat dissipating pipe is set, heat dissipating pipe is connected with the hot-water line of the motor of this project vehicle, and hot water pump is set on connecting pipeline, hot water pumps in heat dissipating pipe by hot water pump, hot water and hydraulic oil carry out heat exchange in heat dissipating pipe, and hydraulic fluid temperature is raised.But this preheating method exists following defect: when temperature is lower, motor needs heat engine more than 10 minutes, and its water temperature just can reach more than 70 DEG C, and preheat time is long; Further, in warm, hot water circulates in heat dissipating pipe, and hydraulic oil is state of rest, is heat transfer between heat dissipating pipe and hydraulic oil, and without convection phenomena, the pre-thermal efficiency is lower.
Summary of the invention
In view of this, the present invention proposes a kind of engineering vehicle, hydraulic oil preheating device and method, to solve long, the inefficient problem of preheating pre existing thermal preheat time.
An aspect, the invention provides a kind of hydraulic oil preheating device, for engineering vehicle, comprising: heat exchanger, and its first port is connected with the outlet pipe of this project vehicle, and heat exchanger first port is connected with the second port; Oil inlet pipe, its one end is connected with the 3rd port of heat exchanger, and the other end is used for being connected with the hydraulic oil container of this project vehicle; Oil outlet tube, its one end is connected with the 4th port of heat exchanger, and the other end is used for being connected with hydraulic oil container; Further, heat exchanger the 4th port is connected with the 3rd port; Oil pump, for being sucked in heat exchanger after heat exchange by the hydraulic oil in hydraulic oil container, then makes it be back in hydraulic oil container.
Further, hydraulic oil preheating device also comprises: temperature transducer, for obtaining the temperature information value of hydraulic oil in hydraulic oil container; Controller, comprises startup control unit, for receiving the temperature information value that temperature transducer sends, and opens oil pump when temperature information value is less than predefined value.
Further, controller also comprises: closing control unit, for closing oil pump when temperature information value equals predefined value.
Further, oil pump is two-way pump; Controller also comprises: reversion control unit, for controlling two-way pump reversion when temperature information value equals predefined value, until when oil inlet pipe and oil outlet tube are for inhaling dummy status, two-way pump is closed.
Further, hydraulic oil preheating device also comprises pressurized machine; Wherein, the waste gas end of pressurized machine is connected with the first port of heat exchanger by outlet pipe.
Further, hydraulic oil preheating device also comprises baffler, is connected to the second port of heat exchanger.
Further, the oil outlet position of oil outlet tube is higher than the hydraulic oil liquid level in hydraulic oil container.
Preheating unit of the present invention carries out preheating by the high-temperature tail gas of engineering vehicle to the low temperature hydraulic oil of this project vehicle, has saved the energy; Further, be convection heat exchange between hydraulic oil and tail gas, heat exchange efficiency is high, and preheat time is short.
On the other hand, the invention provides a kind of engineering vehicle, be provided with any one hydraulic oil preheating device above-mentioned.
Because hydraulic oil preheating device has above-mentioned effect, the engineering vehicle with this hydraulic oil preheating device also has identical technique effect.
Again on the one hand, the present invention also provides a kind of hydraulic oil pre-heating mean, for engineering vehicle, comprises the steps: the tail gas stream of this project vehicle through heat exchanger; Hydraulic oil in hydraulic oil container in this project vehicle is flowed through heat exchanger, to carry out heat exchange with tail gas.
Further, the step that the hydraulic oil in hydraulic oil container in this project vehicle flows through heat exchanger is comprised: when the temperature value of hydraulic oil is less than predefined value in hydraulic oil container, control the hydraulic oil in hydraulic oil container in this project vehicle to flow through heat exchanger.
Further, also comprise: the hydraulic oil controlled when temperature value equals predefined value in this project vehicle in hydraulic oil container stops flowing through heat exchanger.
This hydraulic oil pre-heating mean is identical with above-mentioned hydraulic oil preheating device principle, and the institute in this way with hydraulic oil preheating device is effective.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of hydraulic oil preheating device embodiment of the present invention;
Fig. 2 is in hydraulic oil preheating device embodiment of the present invention, control section structured flowchart;
Fig. 3 is the flow chart of hydraulic oil pre-heating mean embodiment of the present invention.
Description of reference numerals:
1 pressurized machine
2 oil outlet tubes
3 heat exchangers
4 oil inlet pipes
5 oil pumps
6 bafflers
7 outlet pipes
8 hydraulic oil containers
9 motors
10 controllers
11 temperature transducers
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
See Fig. 1, there is shown the preferred embodiment of hydraulic oil preheating device of the present invention, this embodiment is used for engineering vehicle.Generally speaking, engineering vehicle comprises outlet pipe 7 and the hydraulic oil container 8 for storage liquid force feed, discharges high-temperature tail gas in outlet pipe 7.As shown in the figure, the present embodiment hydraulic oil preheating device at least comprises heat exchanger 3, oil inlet pipe 4, oil outlet tube 2 and oil pump 5.Heat exchanger 3 comprises the first port, the second port, the 3rd port and the 4th port, and wherein, the first port is connected with the second port, and the 3rd port is connected with the 4th port.
See Fig. 1, can find out, the first port of heat exchanger 3 is connected with outlet pipe 7, and the second port is connected with heat exchanger 3 outside.Outlet pipe 7 is arranged on motor 9 by pressurized machine, the high-temperature tail gas produced is entered in air through outlet pipe 7 in motor 9 working procedure.
Continue see Fig. 1, it can also be seen that, in the present embodiment, oil inlet pipe 4, oil outlet tube 2, heat exchanger 3 and hydraulic oil container 8 form a closed circuit.Particularly, one end of oil inlet pipe 4 is connected with the 3rd port of heat exchanger 3, and the other end is connected with hydraulic oil container 8.One end of oil outlet tube 2 is connected with the 4th port of heat exchanger 3, and the other end is connected with hydraulic oil container 8.Oil pump 5 is for applying suction to the hydraulic oil in hydraulic oil container 8, and pumped in heat exchanger 3 through oil inlet pipe 4 by the hydraulic oil in hydraulic oil container 8 and carry out heat exchange with high-temperature tail gas, the hydraulic oil after heat exchange flows through oil outlet tube 2 and is again back in hydraulic oil container 8 again.During concrete enforcement, oil pump 5 can be arranged on oil inlet pipe 4, also can be arranged on oil outlet tube 2, or is arranged in heat exchanger 3 and hydraulic oil container 8, and the present invention is not limited in any way its concrete mounting point.
Known in conjunction with correlation technique, heat exchanger 3 is generally provided with shell side and tube side, and heat transfer process is: the fluid flowing through the different temperatures of shell side and tube side carries out heat exchange.Generally speaking, tail gas stream is through shell side, and hydraulic oil flows through tube side.Particularly, outlet pipe 7 is connected with shell side inlet, and shell-side outlet is directly connected with outside atmosphere.Oil inlet pipe 4 is connected with tube-side inlet, and oil outlet tube 2 exports with tube side and is connected.
In the present embodiment, adopt the high-temperature tail gas of engineering machinery to carry out preheating to the hydraulic oil of this project machinery, not only saved the energy, meanwhile, because the mode of tail gas and hydraulic oil convection current in heat exchanger carries out heat exchange, heat transfer rate is fast, and preheat time is short.
Preferably, in order to make oil pump 5 automatically open, the present embodiment also comprises temperature transducer 11 and controller 10 further.Wherein, temperature transducer 11 is arranged in hydraulic oil container 8, for gathering the temperature information value of hydraulic oil in hydraulic oil container 8.Controller 10 comprises startup control unit, for receiving the temperature information value that temperature transducer sends.Further, controller 10 is also connected with oil pump 5, opens oil pump 5 when being less than predefined value for temperature information value.
Can find out, the temperature of controller 10 Real-Time Monitoring hydraulic oil, and when temperature information value is less than predefined value, starts oil pump 5, make low temperature hydraulic oil and high-temperature tail gas carry out heat exchange.
Preferably, reaching preset temperature gear pump 5 to make hydraulic oil can close automatically, and the present embodiment controller also comprises closing control unit further, for closing oil pump 5 when temperature information value equals predefined value.
Can find out, controller 10, in whole heat exchanging process, detects the temperature of hydraulic oil in hydraulic oil container 8 in real time, when temperature information value equals predefined value, closes oil pump 5, makes low temperature hydraulic oil and high-temperature tail gas stop heat exchange.
Preferably, after heat exchange, in order to prevent the hydraulic oil retained in oil inlet pipe 4 and oil outlet tube 2 from going bad because continuing heating, the present embodiment is after heat exchange terminates, after the hydraulic oil remained in oil inlet pipe 4, heat exchanger 3 and oil outlet tube 2 is sucked into hydraulic oil container 8 completely, oil pump 5 just can cut out.Particularly, two-way pump selected by oil pump 5, and controller 10 is connected with two-way pump, when temperature information value equals predefined value, controller control oil pump 5 reverses, and closes oil pump 5 again after the hydraulic oil in oil inlet pipe 4, heat exchanger 3, oil outlet tube 2 is sucked hydraulic oil container 8 completely.During concrete enforcement, two-way pump 5 can select electronic pump, and electronic pump can monitor the oil pressure in connecting pipeline automatically, and when pipeline is for inhaling dummy status, electronic pump can be closed automatically.
The present embodiment controls heat exchanging process automatically by controller 10, makes the oil temperature of hydraulic oil remain on setting value.
In order to ensure that tail gas has certain pressure when entering heat exchanger 3, the present embodiment can further include pressurized machine 1, pressurized machine 1 is connected between outlet pipe 7 and motor 9, and the waste gas end of pressurized machine 1 is connected with the first port of heat exchanger 3 by outlet pipe 7.During concrete enforcement, pressurized machine 1 can select turbosupercharger.
In order to eliminate the noise produced when tail gas discharges heat exchanger 3, the present embodiment can also at the second port joint noise reduction device 6 of heat exchanger 3, and the tail gas flowing through heat exchanger 3 enters in air after baffler 6 again.
During concrete enforcement, the oil outlet position of oil outlet tube 2 is higher than the hydraulic oil liquid level in hydraulic oil container 8.Particularly, the interface position of oil outlet tube 2 and hydraulic oil container 8 is higher than the hydraulic oil liquid level in hydraulic oil container 8, and the hydraulic oil reduced after preheating mixes mutually with the low temperature hydraulic oil in fuel tank.
Embodiment of the present invention working principle: the temperature of hydraulic oil in controller 10 Real-Time Monitoring engineering vehicle, when oil temperature is lower than predefined value, start oil pump 5, the low temperature hydraulic oil in hydraulic oil container 8 is made to pump in heat exchanger 3, carry out heat exchange with the high-temperature tail gas flowing through heat exchanger 3, the hydraulic oil after heat exchange is back in hydraulic oil container 8 again.When the temperature of hydraulic oil reaches predefined value, controller control oil pump 5 antiport, all sucked by the hydraulic oil in oil inlet pipe 4, heat exchanger 3, oil outlet tube 2 after in hydraulic oil container 8, oil pump 5 cuts out.
In sum, the high-temperature tail gas that the present invention adopts engineering machinery to discharge carries out preheating to the low temperature hydraulic oil of this project machinery, and preheat time is short, and the pre-thermal efficiency is high, meanwhile, also a saving the energy.
On the other hand, present invention also offers a kind of engineering vehicle, this project vehicle is provided with any one hydraulic oil preheating device above-mentioned, concrete structure illustrates see above-mentioned, and the present invention does not repeat them here.
Because hydraulic oil preheating device has above-mentioned effect, the engineering vehicle with this Preheating unit also has identical technique effect.
Again on the one hand, the present invention also provides a kind of hydraulic oil pre-heating mean, and the method comprises the steps: the tail gas stream of this project vehicle through heat exchanger; Hydraulic oil in hydraulic oil container in this project vehicle is flowed through heat exchanger, to carry out heat exchange with tail gas.Because the temperature of engineering vehicle tail gas is higher, adopt high-temperature tail gas and low temperature hydraulic oil to carry out heat exchange, not only saved the energy, simultaneously compared with the pre-heating mean of existing employing hot water, shorten preheat time, improve the pre-thermal efficiency.
Preferably, the step that hydraulic oil in hydraulic oil container in this project vehicle flows through heat exchanger is comprised: when in hydraulic oil container, the temperature information value of hydraulic oil is less than predefined value, the hydraulic oil in hydraulic oil container in this project vehicle is controlled to flow through heat exchanger, carry out heat exchange with tail gas, the method can start heat exchanging process automatically.
Further preferably, the step hydraulic oil in hydraulic oil container in this project vehicle being flowed through heat exchanger also comprises: the hydraulic oil controlled when temperature information value equals predefined value in this project vehicle in hydraulic oil container stops flowing through heat exchanger.When temperature reaches predefined value, the method automatically can control heat exchange and stop.
Below in conjunction with Fig. 3, the preferred embodiment of hydraulic oil pre-heating mean is described further.
First, in the hydraulic oil container of engineering machinery, place a temperature transducer, the temperature information value of the hydraulic oil that temperature transducer detects, after amplification module amplifies, sends controller to.This temperature measuring value and predefined value compare by controller, when measured load is lower than predefined value, starts oil pump, hydraulic oil is pumped in heat exchanger, the high-temperature tail gas that hydraulic oil and this project machinery produce carries out heat exchange in heat exchanger, and the hydraulic oil after heat exchange is back in hydraulic oil container.When measured load equals predefined value, controller control oil pump reverses, and all sucked in hydraulic oil container by the hydraulic oil in oil pipe, oil pipe is inhaled empty gear pump and automatically quit work.
High-temperature tail gas in low temperature hydraulic oil in engineering machinery and this project machinery is carried out heat exchange by the present invention, shortens preheat time, improves the pre-thermal efficiency, meanwhile, also a saving the energy.
It should be noted that: the principle of hydraulic oil pre-heating mean is identical with the principle of hydraulic oil preheating device, relevant part can cross-reference.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a hydraulic oil preheating device, for engineering vehicle, is characterized in that, comprising:
Heat exchanger (3), its first port is connected with the outlet pipe (7) of this project vehicle, and the first port of described heat exchanger (3) is connected with the second port;
Oil inlet pipe (4), its one end is connected with the 3rd port of described heat exchanger (3), and the other end is used for being connected with the hydraulic oil container (8) of this project vehicle;
Oil outlet tube (2), its one end is connected with the 4th port of described heat exchanger (3), and the other end is used for being connected with described hydraulic oil container (8); Further, the 4th port of described heat exchanger (3) is connected with described 3rd port;
Oil pump (5), for being sucked in heat exchanger (3) after heat exchange by the hydraulic oil in described hydraulic oil container (8), then makes it be back in hydraulic oil container (8).
2. hydraulic oil preheating device according to claim 1, is characterized in that, also comprises:
Temperature transducer (11), for obtaining the temperature information value of hydraulic oil in described hydraulic oil container (8);
Controller (10), comprises startup control unit, for receiving the temperature information value that described temperature transducer (11) sends, and opens described oil pump (5) when described temperature information value is less than predefined value.
3. hydraulic oil preheating device according to claim 2, is characterized in that, described controller (10) also comprises: closing control unit, for closing described oil pump (5) when described temperature information value equals described predefined value.
4. hydraulic oil preheating device according to claim 2, is characterized in that, described oil pump (5) is two-way pump;
Described controller (10) also comprises: reversion control unit, for controlling the reversion of described two-way pump when described temperature information value equals described predefined value, until when described oil inlet pipe (4) and described oil outlet tube (2) are for inhaling dummy status, described two-way pump is closed.
5. hydraulic oil preheating device according to claim 1, is characterized in that, also comprises pressurized machine (1); Wherein, the waste gas end of described pressurized machine (1) is connected by first port of outlet pipe (7) with described heat exchanger (3).
6. hydraulic oil preheating device according to claim 1, is characterized in that, also comprises baffler (6), is connected to the second port of described heat exchanger (3).
7. hydraulic oil preheating device according to any one of claim 1 to 5, is characterized in that, the oil outlet position of described oil outlet tube (2) is higher than the hydraulic oil liquid level in described hydraulic oil container (8).
8. an engineering vehicle, is characterized in that, is provided with the hydraulic oil preheating device according to any one of claim 1 to 7.
9. a hydraulic oil pre-heating mean, for engineering vehicle, is characterized in that, comprises the steps:
By the tail gas stream of this project vehicle through heat exchanger;
Hydraulic oil in hydraulic oil container in this project vehicle is flowed through described heat exchanger, to carry out heat exchange with described tail gas;
Hydraulic oil after heat exchange is flowed back to and flow to described hydraulic oil container.
10. hydraulic oil pre-heating mean according to claim 9, is characterized in that, described step hydraulic oil in hydraulic oil container in this project vehicle being flowed through described heat exchanger comprises:
When in described hydraulic oil container (8), the temperature information value of hydraulic oil is less than predefined value, control the hydraulic oil in hydraulic oil container in this project vehicle to flow through described heat exchanger.
11. hydraulic oil pre-heating means according to claim 10, is characterized in that, also comprise:
The hydraulic oil controlled when described temperature information value equals described predefined value in this project vehicle in hydraulic oil container stops flowing through described heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210192595.6A CN102705307B (en) | 2012-06-12 | 2012-06-12 | Engineering vehicle, hydraulic oil preheating device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210192595.6A CN102705307B (en) | 2012-06-12 | 2012-06-12 | Engineering vehicle, hydraulic oil preheating device and method |
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| Publication Number | Publication Date |
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| CN102705307A CN102705307A (en) | 2012-10-03 |
| CN102705307B true CN102705307B (en) | 2015-07-08 |
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| CN201210192595.6A Active CN102705307B (en) | 2012-06-12 | 2012-06-12 | Engineering vehicle, hydraulic oil preheating device and method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5993284B2 (en) * | 2012-11-12 | 2016-09-14 | 日立建機株式会社 | Preheating equipment for construction machinery |
| CN111075602A (en) * | 2019-12-30 | 2020-04-28 | 三一石油智能装备有限公司 | Exhaust gas heating system and exhaust gas heating preheating method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001046944A (en) * | 1999-08-06 | 2001-02-20 | Kanto Auto Works Ltd | Coating material temperature control device md method thereof |
| CN101893020A (en) * | 2010-07-29 | 2010-11-24 | 三一重机有限公司 | Preheating structure for hydraulic system |
| CN201972816U (en) * | 2011-04-15 | 2011-09-14 | 江苏大学 | Preheating system of high-viscosity fuel oil for fueling diesel engine |
| CN102330446B (en) * | 2011-08-05 | 2013-03-27 | 三一重机有限公司 | Device for enhancing pre-heating function of hydraulic oil |
| CN102359420A (en) * | 2011-08-23 | 2012-02-22 | 三一重机有限公司 | Heating system and engineering mechanism using same |
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