CN108979800A - Hydraulic active cooling system applied to urea heating of SCR system and control method thereof - Google Patents
Hydraulic active cooling system applied to urea heating of SCR system and control method thereof Download PDFInfo
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- CN108979800A CN108979800A CN201810764217.8A CN201810764217A CN108979800A CN 108979800 A CN108979800 A CN 108979800A CN 201810764217 A CN201810764217 A CN 201810764217A CN 108979800 A CN108979800 A CN 108979800A
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- Prior art keywords
- urea
- hydraulic
- active
- heat radiating
- radiating device
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 239000004202 carbamide Substances 0.000 title claims abstract description 187
- 238000001816 cooling Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 title abstract description 19
- 239000010720 hydraulic oil Substances 0.000 claims description 18
- 210000002700 urine Anatomy 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000270295 Serpentes Species 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The application discloses be applied to hydraulic pressure initiative cooling system of SCR system urea heating, its characterized in that includes: the active heat dissipation device is communicated with a vehicle hydraulic system and is used for acquiring heat of the hydraulic system; the urea tank is communicated with the active heat dissipation device and obtains heat of the active heat dissipation device; and a urea pump for injecting urea in the urea tank. On one hand, the redundant heat of the existing hydraulic system is recycled and used for heating the urea of the SCR system, so that the safe and stable operation of the hydraulic system is guaranteed, the working efficiency of a hydraulic element is improved, no extra energy is consumed, and the method is more scientific and energy-saving; on the other hand, the dependence of the urea of the SCR system on active heating is reduced, the SCR system can be heated without providing extra heat, the energy consumption level of the whole vehicle is optimized, and the cost is saved.
Description
Technical field
This application involves field of engineering vehicle equipment, in particular to a kind of Hydraulic Main applied to SCR system Urea
Dynamic cooling system and its control method.
Background technique
SCR, i.e. SCR technology are existed for a treatment process of NOX in exhaust gas from diesel vehicle discharge
Under the action of catalyst, reducing agent ammonia or urea are sprayed into, the NOX in tail gas is reduced into N2 and H2O.
Its specific work process is as follows: tail gas enters exhaust fixed tube after coming out from turbine, urine is equipped on fixed tube
Plain metering jetting device sprays into aqueous solution of urea, and urea generates NH3 after hydrolysis and pyrolytic reaction occur at high temperature, in SCR system
Catalyst surface unite using NH3 reduction NOX, N2 is discharged, extra NH3 is also reduced to N2, prevents from leaking.Under normal circumstances,
5L liquid area aqueous solution can be consumed while consuming 100L fuel oil.Therefore, heat appropriate urging for SCR post-processing urea
It is necessary for changing reaction.And additional heating device is taken in order to obtain heat in the prior art, additionally consume energy.
On the other hand, the hydraulic system in engineering truck easily generates high oil temperature due to high load capacity high-pressure work, and oily
Temperature is excessively high to cause oil viscosity to reduce, each element kinematic pair insufficient lubrication, accelerates sealing element aging, shortens component life.Engineering
The general operating condition of equipment is severe, and local element fever is serious, and heat dissipation is even more important for engineering equipment hydraulic system.In the prior art
Often energy need to be additionally consumed by the way of air-cooled or water cooling.
Summary of the invention
In order to solve the above technical problems, one of them of the invention, which is designed to provide one kind, is applied to SCR system urea
The hydraulic active cooling system of heating.
It is another object of the present invention to provide a kind of hydraulic active cooling systems applied to SCR system Urea
Control method.
Technical solution provided by the invention is as follows:
A kind of hydraulic active cooling system applied to SCR system Urea, comprising:
The active heat radiating device of hydraulic system heat is connected to and is used to obtain with the hydraulic system of vehicle；
Urea tank that is being connected to active heat radiating device and obtaining active heat radiating device heat；
Urea pump for projecting the urea in urea tank.
It preferably, further include for by the heater of Urea.
Preferably, the active heat radiating device includes set on valve body and being set to the intracorporal snakelike urea tube of valve and hydraulic tube,
The hydraulic tube is connected to automobile hydraulic system, and the snakelike urea tube is connected to urea tank.
It preferably, further include for adjusting the adjusting control valve into the urea flow of active heat radiating device.
Preferably, further include the urea temperature sensor in the urea tank and include the hydraulic oil in hydraulic system
Temperature sensor.
It preferably, further include the cooling device for being connected to and being used for cool down to hydraulic system with the hydraulic system of vehicle.
In addition, the present invention also provides a kind of controlling parties of hydraulic active cooling system applied to SCR system Urea
Method includes the following steps:
S1: the temperature value of hydraulic oil temperature sensor is obtained；
S2: whether the temperature value for judging the hydraulic oil temperature sensor is more than preset value, is led to if it exceeds preset value then increases
Cross the urea flow of active heat radiating device；
S3: the temperature value of urea temperature sensor is obtained；
S4: whether the temperature value for judging the urea temperature sensor is more than preset value, and starting adds if not up to preset value
Hot device.
Preferably, described increase through the urea flow of active heat radiating device is to be adjusted by adjusting control valve.
Preferably, the step S4 further includes step S41: if the temperature value of the urea temperature sensor is more than default
Value then stops heater work, and reduces the urea flow into active heat radiating device.
It preferably, further include step S5: if the temperature value of the hydraulic oil temperature sensor is more than preset value and described
The temperature value of urea temperature sensor is more than preset value, then starts cooling device.
Hydraulic active cooling system and its control method provided by the invention applied to SCR system Urea, has
Below the utility model has the advantages that
On the one hand, the extra heat recovery of existing hydraulic system is used for SCR system Urea, ensures the peace of hydraulic system
Full stable operation, improves the working efficiency of an element in hydraulic system, and will not additionally consume energy, more scientific, energy saving；
On the other hand, dependence of the SCR system urea to active heating is reduced, not needing additional heat offer can be to SCR system
It is heated, optimizes vehicle energy consumption level, save cost.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of a kind of signal of embodiment of hydraulic active cooling system applied to SCR system Urea
Figure；
Fig. 2 is a kind of a kind of embodiment of control method of hydraulic active cooling system applied to SCR system Urea
Flow chart.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The application protection all should belong in technical staff's every other embodiment obtained without making creative work
Range.
As shown in Figure 1, the technical solution that present embodiment provides is as follows:
A kind of hydraulic active cooling system applied to SCR system Urea, comprising:
The active heat radiating device 10 of hydraulic system heat is connected to and is used to obtain with the hydraulic system 13 of vehicle；
Urea tank 8 that is being connected to active heat radiating device 10 and obtaining 10 heat of active heat radiating device；
Urea pump 2 for projecting the urea in urea tank 8.
The working principle of present embodiment is as follows:
As shown in Figure 1, hydraulic system 13 can be the hydraulic system having by oneself on vehicle, each oil hydraulic system, because it is at work
A large amount of heat can be generated, therefore the heat is used.It can use pipeline to conduct the heat of hydraulic system 13 to master
Dynamic radiator 10.
The main function of active heat radiating device 10 is exactly to obtain the heat from hydraulic system 13, and be transferred to urea tank 8
Interior urea, urea tank 8 can be connected to by pipeline with active heat radiating device 10, and be recycled.
Wherein, hydraulic system 13 can be connected to by hydraulic oil pipeline with active heat radiating device 10, and constantly be recycled, thus
Heat is constantly transferred to active heat radiating device 10.And active heat radiating device 10 can also be by the urea that is connected to urea tank 8
Heating return pipe 11 is connected to Urea inlet pipe 12, continually heats the urea in urea tank 8.
Serpentine or snake can be set in optimal heating effect in order to obtain, the urea pipeline in active heat radiating device 10
Shape, or " returning " shape, as far as possible dense distribution, and it is as small as possible with the spacing of hydraulic oil pipeline, sufficiently to obtain heat.
Wherein urea pump 2 is chemically reacted for pumping out the urea in urea tank 8 into SCR system.
Pass through present embodiment, on the one hand, the extra heat recovery of existing hydraulic system is used for SCR system urea and is added
Heat has ensured the safe and stable operation of hydraulic system, improves the working efficiency of an element in hydraulic system, and will not additionally disappear
Energy consumption, it is more scientific, energy saving；On the other hand, dependence of the SCR system urea to active heating is reduced, is not needed additional
Heat offer can heat SCR system, reduce energy consumption, optimize vehicle energy consumption level, save cost.
It can also include for preventing from working as liquid by the heater 4 of Urea as the further preferred of present embodiment
When the heat of pressure system 13 is inadequate, active heating can be carried out to urea, or auxiliary heats together, to ensure urea
Required temperature.
Wherein, heater 4 can use electric heater, or using the heat exchanger being connected to vehicular propulsion, lead to
Thermal cycle is crossed, the high temperature heat of power device is transmitted on heat exchanger.
It is, of course, also possible to take the mode for carrying out heat exchange with Vehicular exhaust, Vehicular exhaust is transmitted to heat using pipeline
On exchanger, heat exchanger is heated, and the heat of heat exchanger then heats the urea for entering urea pump 2.
If the heat using vehicle itself can not further increase urea temperature, so that it may using electrically heated
Mode.
Generally, heater 4 is arranged and enters on the pipeline of urea pump 2.
As the further preferred of present embodiment, the active heat radiating device 10 includes set on valve body and being set in valve body
Snakelike urea tube and hydraulic tube, the hydraulic tube is connected to automobile hydraulic system, and the snakelike urea tube and urea tank 8 connect
It is logical.
Optimal heating effect in order to obtain, the urea tube in active heat radiating device 10 can also be serpentine or
" returning " shape, as far as possible dense distribution, and it is as small as possible with the spacing of hydraulic tube, sufficiently to obtain heat.
Certainly, hydraulic tube is also possible to snakelike or serpentine or " returning " shape, as far as possible dense distribution, tubular with urea
At complicated layout, best heat transfer effect is obtained.
It further include for adjusting the urea flow for entering active heat radiating device 10 as the further preferred of present embodiment
Adjusting control valve 5.
By taking Fig. 1 as an example, one such connection type is illustrated:
Urea return pipe 11 is connected to urea tank 8 and active heat radiating device 10, for conveying the urea after heating；
Urea inlet pipe 12 is connected to adjusting control valve 5 and active heat radiating device 10, for urea to be delivered to active heat removal dress
10 are set to be heated；
Urea inlet pipe 6 is connected to urea tank 8 and urea pump 2, projects for the urea after heating；
Urea return pipe 3 is connected to urea pump 2 and adjusting control valve 5, the urea for urea pump 2 to flow back be recycled to urea tank 8 or
Person's active heat radiating device 10；
Urea cold back tube 7 is connected to adjusting control valve 5 and urea tank 8, for that the urea that urea pump 2 flows back will be recycled to urea tank
8。
Its working principles are as follows:
If detect that urea temperature is excessively high, or when having had reached required temperature, then the spool of adjusting control valve 5 is dynamic
Make, the flow of urea return pipe 3 is transported into urea cold back tube 7, that is, increase the regurgitant volume on urea cold back tube 7.If inspection
Measure urea temperature it is too low when, that is, need to heat urea, at this time then by adjusting control valve 5, by urea return pipe 3
Flow transport to Urea inlet pipe 12, that is, the flow on Urea inlet pipe 12 is increased, so that most of be delivered to
Active heat radiating device 10 is heated.
Therefore adjusting control valve 5 is utilized, temperature controlled purpose is actually played, can easily control urea
Temperature.Adjusting control valve 5 can use ratio adjusting valve perhaps other electric control valves or manual modulation valve.
Further, urea temperature sensor 9 can be set in urea tank 8, hydraulic oil is set in hydraulic system 13
Temperature sensor 14.Thus convenient for detecting each temperature value, so that control be adjusted.
It can also include being connected to the hydraulic system 13 of vehicle and for liquid as the further preferred of present embodiment
The cooling device 15 that pressure system 13 cools down.
If be above preset value when the temperature of hydraulic system 13 and urea is excessively high, it can open at this time
Dynamic cooling device 15 is cooled down, and the normal work of entire SCR system and hydraulic system is protected.Cooling device 15 can use
Blower or other water cooling plants.
As Figure 1-Figure 2, the present invention also provides a kind of hydraulic active cooling systems applied to SCR system Urea
Control method, include the following steps:
S1: the temperature value of hydraulic oil temperature sensor 14 is obtained；
S2: whether the temperature value for judging the hydraulic oil temperature sensor 14 is more than preset value, if it exceeds preset value then increases
Pass through the urea flow of active heat radiating device 10；
S3: the temperature value of urea temperature sensor 9 is obtained；
S4: whether the temperature value for judging the urea temperature sensor 9 is more than preset value, and starting adds if not up to preset value
Hot device 4.
By taking Fig. 1 and Fig. 2 as an example, illustrate the working principle of present embodiment:
Hydraulic oil temperature sensor 14 is mounted in hydraulic system 13, hydraulic system 13 can be on vehicle have by oneself it is hydraulic
The heat is used because it can generate a large amount of heat at work for system, each oil hydraulic system.It can use
Pipeline conducts the heat of hydraulic system 13 to active heat radiating device 10.
The main function of active heat radiating device 10 is exactly to obtain the heat from hydraulic system 13, and be transferred to urea tank 8
Interior urea, urea tank 8 can be connected to by pipeline with active heat radiating device 10, and be recycled.
Wherein, hydraulic system 13 can be connected to by hydraulic oil pipeline with active heat radiating device 10, and constantly be recycled, thus
Heat is constantly transferred to active heat radiating device 10.And active heat radiating device 10 can also be by the urea that is connected to urea tank 8
Heating return pipe 11 is connected to Urea inlet pipe 12, continually heats the urea in urea tank 8.
Serpentine or snake can be set in optimal heating effect in order to obtain, the urea pipeline in active heat radiating device 10
Shape, or " returning " shape, as far as possible dense distribution, and it is as small as possible with the spacing of hydraulic oil pipeline, sufficiently to obtain heat.
Wherein urea pump 2 is chemically reacted for pumping out the urea in urea tank 8 into SCR system.
Illustrate the control process of present embodiment with reference to Fig. 2:
When the temperature value for judging hydraulic oil temperature sensor 14 is more than preset value, then the urine for passing through active heat radiating device 10 is increased
Plain flow takes away more heats using urea.If be not above preset value, it can remain unchanged.
When the temperature value for judging urea temperature sensor 9 is not up to preset value, illustrates that the temperature of urea is not high enough, be less than
Required temperature then starts heater 4, by Urea.
Pass through present embodiment, on the one hand, the extra heat recovery of existing hydraulic system is used for SCR system urea and is added
Heat has ensured the safe and stable operation of hydraulic system, improves the working efficiency of an element in hydraulic system, and will not additionally disappear
Energy consumption, it is more scientific, energy saving；On the other hand, dependence of the SCR system urea to active heating is reduced, is not needed additional
Heat offer can heat SCR system, reduce energy consumption, optimize vehicle energy consumption level, save cost.
As the further preferred of present embodiment, described increase through the urea flow of active heat radiating device 10 is to pass through
Adjusting control valve 5 is adjusted.
Further, the step S4 further includes step S41: if the temperature value of the urea temperature sensor 9 is more than
Preset value then stops the work of heater 4, and reduces the urea flow into active heat radiating device 10.
As shown in Figure 1, illustrating one such connection type:
Urea return pipe 11 is connected to urea tank 8 and active heat radiating device 10, for conveying the urea after heating；
Urea inlet pipe 12 is connected to adjusting control valve 5 and active heat radiating device 10, for urea to be delivered to active heat removal dress
10 are set to be heated；
Urea inlet pipe 6 is connected to urea tank 8 and urea pump 2, projects for the urea after heating；
Urea return pipe 3 is connected to urea pump 2 and adjusting control valve 5, the urea for urea pump 2 to flow back be recycled to urea tank 8 or
Person's active heat radiating device 10；
Urea cold back tube 7 is connected to adjusting control valve 5 and urea tank 8, for that the urea that urea pump 2 flows back will be recycled to urea tank
8。
Its working principles are as follows:
If the temperature value for obtaining hydraulic oil temperature sensor 14 is excessively high, or when having had reached required temperature, then adjust
The spool of control valve 5 acts, and the flow of urea return pipe 3 is transported to urea cold back tube 7, that is, increase on urea cold back tube 7
Regurgitant volume.If detect that urea temperature is too low, that is, need to heat urea, at this time then by adjusting control
The flow of urea return pipe 3 is transported to Urea inlet pipe 12, that is, increases the flow on Urea inlet pipe 12 by valve 5, is made
Active heat radiating device 10 must be largely delivered to be heated.
Therefore adjusting control valve 5 is utilized, temperature controlled purpose is actually played, can easily control urea
Temperature.Adjusting control valve 5 can use ratio adjusting valve perhaps other electric control valves or manual modulation valve.
It preferably, further include step S5: if the temperature value of the hydraulic oil temperature sensor 14 is more than preset value and institute
The temperature value for stating urea temperature sensor 9 is more than preset value, then starts cooling device 15.
If be above preset value when the temperature of hydraulic system 13 and urea is excessively high, it can open at this time
Dynamic cooling device 15 is cooled down, and the normal work of entire SCR system and hydraulic system is protected.Cooling device 15 can use
Blower or other water cooling plants.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of hydraulic active cooling system applied to SCR system Urea characterized by comprising
The active heat radiating device (10) of hydraulic system heat is connected to and is used to obtain with the hydraulic system (13) of vehicle；
Urea tank (8) that is being connected to active heat radiating device (10) and obtaining active heat radiating device (10) heat；
Urea pump (2) for projecting the urea in urea tank (8).
2. being applied to the hydraulic active cooling system of SCR system Urea according to claim 1, which is characterized in that also
Including for by the heater (4) of Urea.
3. the hydraulic active cooling system according to claim 1 or claim 2 applied to SCR system Urea, which is characterized in that
The active heat radiating device (10) include set on valve body and be set to the intracorporal snakelike urea tube of valve and hydraulic tube, the hydraulic tube with
Automobile hydraulic system connection, the snakelike urea tube are connected to urea tank (8).
4. being applied to the hydraulic active cooling system of SCR system Urea according to claim 3, which is characterized in that also
Including for adjusting the adjusting control valve (5) into the urea flow of active heat radiating device (10).
5. being applied to the hydraulic active cooling system of SCR system Urea according to claim 1, which is characterized in that also
It including the urea temperature sensor (9) being set on urea tank (8) and include the hydraulic fluid temperature biography on hydraulic system (13)
Sensor (14).
6. being applied to the hydraulic active cooling system of SCR system Urea according to claim 1, which is characterized in that also
The cooling device (15) for being connected to including the hydraulic system (13) with vehicle and being used to cool down to hydraulic system (13).
7. a kind of control method of the hydraulic active cooling system applied to SCR system Urea, which is characterized in that including such as
Lower step:
S1: the temperature value of hydraulic oil temperature sensor (14) is obtained；
S2: whether the temperature value for judging the hydraulic oil temperature sensor (14) is more than preset value, if it exceeds preset value then adds
The big urea flow for passing through active heat radiating device (10)；
S3: the temperature value of urea temperature sensor (9) is obtained；
S4: whether the temperature value for judging the urea temperature sensor (9) is more than preset value, is started if not up to preset value
Heater (4).
8. the control method applied to the hydraulic active cooling system of SCR system Urea according to claim 7, special
Sign is that described increase through the urea flow of active heat radiating device (10) is to adjust by adjusting control valve (5).
9. the control method applied to the hydraulic active cooling system of SCR system Urea according to claim 7, special
Sign is that the step S4 further includes step S41: if the temperature value of the urea temperature sensor (9) is more than preset value,
Stop heater (4) work, and reduces the urea flow into active heat radiating device (10).
10. the control method applied to the hydraulic active cooling system of SCR system Urea according to claim 7,
It is characterized in that, further includes step S5: if the temperature value of the hydraulic oil temperature sensor (14) is more than preset value and the urine
The temperature value of plain temperature sensor (9) is more than preset value, then starts cooling device (15).
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| CN108979800B CN108979800B (en) | 2020-02-28 |
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| CN108979800B (en) | 2020-02-28 |
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Address after: 415106 Guanxi Town, Dingcheng District, Changde City, Hunan Province Patentee after: Hunan Xiangjian Heavy Industry Technology Co.,Ltd. Address before: 415106 Guanxi Town, Dingcheng District, Changde City, Hunan Province Patentee before: HUNAN XIANGJIAN HEAVY INDUSTRY TECHNOLOGY CO.,LTD. |
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Denomination of invention: A hydraulic active heat dissipation system and its control method applied to urea heating in SCR systems Granted publication date: 20200228 Pledgee: Agricultural Bank of China Limited Changde branch Pledgor: Hunan Xiangjian Heavy Industry Technology Co.,Ltd. Registration number: Y2024980001561 |