CN103790680A - AdBlue filling system driven by compressed air - Google Patents
AdBlue filling system driven by compressed air Download PDFInfo
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- CN103790680A CN103790680A CN201410059869.3A CN201410059869A CN103790680A CN 103790680 A CN103790680 A CN 103790680A CN 201410059869 A CN201410059869 A CN 201410059869A CN 103790680 A CN103790680 A CN 103790680A
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- blue
- compressed air
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Abstract
The invention discloses an AdBlue filling system driven by compressed air. The AdBlue filling system comprises a compressed air source, an AdBlue container, an AdBlue controller, an metering solenoid valve, a mixing cavity and a jet nozzle. The compressed air source is connected with the AdBlue container, the output end of the AdBlue container is connected with an inlet of the mixing cavity through the metering solenoid valve, and the other inlet of the mixing cavity is connected with the compressed air source. An outlet of the mixing cavity is connected with the jet nozzle, the jet nozzle is located in an engine exhaust pipe, and the duty ratio of the metering solenoid valve is controlled by the AdBlue controller. The AdBlue filling system is easy to control and manage, an AdBlue supply pump is not needed, pressurization is directly performed on the AdBlue container through the compressed air to obtain constant pressure, and therefore accuracy of AdBlue metering jetting can be guaranteed. The AdBlue container serves as a pressure source, multiple AdBlue metering solenoid valves and jet nozzles can be connected to form a low-pressure common rail system, AdBlue pressure can be flexibly adjusted according to the requirement of the AdBlue flow, the application range is wide, and cost is obviously saved.
Description
Technical field
The present invention relates to engine exhaust after-treatment system field, refer to particularly the blue loading system of adding of a kind of compressed air-driven.
Background technique
Selective catalytic reduction (hereinafter to be referred as SCR) for reducing the nitrogen oxide of motor (hereinafter to be referred as NO
x) discharge, be applicable to have the motor of oxygen-enriched combusting feature.Commercial SCR system is at present the main technical schemes that meets state IV, state V discharge.
Oxygenant in SCR reaction is NO
x, reducing agent is the ammonia from the aqueous solution of urea of 32.5% mass concentration (hereinafter to be referred as adding indigo plant), the main physical-chemical reaction that experienced therebetween has several below:
1. add the blue reaction that generates ammonia of decomposing
(NH
2)
2CO·7H
2O(aq)→(NH
2)
2CO(s)+7H
2O(g)
(NH
2)
2CO→NH
3+HCNO
HCNO+H
2O→NH
3+CO
2
2.NO
xcatalytic reduction reaction
4NH
3+4NO+O
2→4N
2+6H
2O
2NH
3+NO+NO
2→2N
2+3H
2O
Dropping at present the SCR system of application, is all that pump is got the quantitative indigo plant of adding, and will add indigo plant be ejected in engine exhaust pipe under the effect of adding blue controller by atomizer nozzle using pump as adding the blue power source of supplying with.Chinese patent " a kind of SCR ejecting system " (publication number: CN102588052A) proposes a kind of SCR ejecting system of designs simplification, the pump housing of transfer pump is arranged on the top of tank body, be conducive in pressure accumulation chamber and pipeline add blue under Action of Gravity Field natural back flow to adding in blue tank, can exempt freeze damage under low temperature and add blue pumping system.But, remain using pump as adding the blue power source of supplying with, no matter take the pump of which kind of form, all need to increase and manufacture and operating cost.In addition, under hot environment, work for a long time higher to the reliability requirement of pump.
Summary of the invention
The object of the invention is the deficiency existing in order to solve above-mentioned background technology, propose the blue loading system of adding of a kind of compressed air-driven, break away from pump as the power source that adds blue filling, control simply, be easy to management, guarantee the accuracy of adding blue metered injection.
For achieving the above object, the designed a kind of compressed air-driven of the present invention add blue loading system, comprise source of compressed air, add blue container, add blue controller, metering solenoid valve, mixing chamber and nozzle, its special way is, described source of compressed air with add blue container and be connected, the described output terminal that adds blue container is connected with the entrance of mixing chamber by metering solenoid valve, another entrance of described mixing chamber is connected with source of compressed air, the outlet of described mixing chamber is connected with nozzle, described nozzle is positioned at engine exhaust pipe, the action current of described metering solenoid valve is by adding blue controller control.
Further, describedly add blue internal tank and be provided with the blue container heating pipe line that adds being connected with cooling water pipe of engine road, the described water intake that adds blue container heating pipe line is provided with cooling water control valve, described cooling water control valve is by adding blue its folding of controller control, described adding in blue container is provided with temperature transducer, and described temperature transducer is transferred to temperature signal to add blue controller.Engine cooling water is flowed through and is added blue container heating pipe line and heat adding indigo plant, thereby can effectively prevent from adding blue freezing.
Further, described in add blue container and be connected by the first one-way valve with source of compressed air, the entrance of described the first one-way valve is connected, exports and adds blue container by the first reduction valve and is connected with source of compressed air; Described source of compressed air is connected with the entrance of mixing chamber by the second one-way valve, and the entrance of described the second one-way valve passes through that the second reduction valve is connected with source of compressed air, outlet is connected with the entrance of mixing chamber.One-way valve can compensate in time according to the variation of adding blue container inner pressure, thereby keeps the constant pressure in container, and one-way valve, by reduction valve and compressed air communication, is controlled at compressed-air actuated pressure in range of needs.
Further, also comprise the exhaust gas temperature sensor that is arranged on engine exhaust pipe and be arranged on the engine operating condition information acquisition sensor on motor, described exhaust gas temperature sensor and engine operating condition information acquisition sensor are transferred to exhaust temperature signal and engine operating condition information signal to add blue controller respectively.Add the signal that blue controller receives engine operating condition information acquisition sensor and exhaust gas temperature sensor, what calculating current working was required adds blue emitted dose, by adjusting electric current, controls metering solenoid valve, and quantitative injection adds indigo plant.
Further, the metered injection branch road that described metering solenoid valve, mixing chamber and nozzle form is at least two-way.Add blue container as source of stable pressure, set up into low pressure common rail system system with one-way valve together with adding blue metering solenoid valve, can multiple nozzles be set simultaneously for indigo plant is added in the filling of SCR system according to different Environmental Conditions.
Further, describedly add blue container and there are three chambers, comprise a larger main chamber and be positioned at two secondary cavities that arrange along the vertical direction main chamber side, in described main chamber, be contained with and add blue solution, describedly add blue controller and be integrated in upper minor chamber, described metering solenoid valve and mixing chamber are integrated in the secondary cavity of below, the end face of described upper minor chamber is lower than the end face of main chamber, be provided with and the communication/power interface that adds blue controller and be connected at the end face of described upper minor chamber, also be provided with the blue jetburner that adds being connected with mixing chamber outlet, describedly add blue jetburner and be connected with nozzle.Add blue controller, metering solenoid valve and add the design that becomes one of blue sets of containers, not only effectively utilized installing space, and convenient management and controlling.
Further, the top and bottom of described Tian Lan container main chamber is respectively arranged with and adds blue filler and residul discharging valve, described in add on blue filler and be provided with pressure-relief valve.In the time that indigo plant is added in filling, first open pressure-relief valve and make to add pressure decreased to barometric pressure in blue container, then discharge adding residue in blue container by residul discharging valve, finally add and add indigo plant from adding blue filler.
Further, described in add in blue container and be provided with liquid level sensor, described liquid level sensor is transferred to liquid level signal to add blue controller.Add the signal that blue controller receiving liquid level sensor sends, in the time adding blue liquid level lower than setting value, report to the police.
Compared with prior art, the present invention has set up the blue loading system of adding of a kind of compressed air-driven, realize and added blue container, add blue controller and add the flexible design in blue metering solenoid valve structural type, not only effectively utilized installing space, and convenient management and control.In addition, the present invention is without adding blue supply pump, directly given and added blue container and pressurize and obtain constant pressure, the accuracy that can guarantee to add blue metered injection by pressurized air.Add blue container as pressure source, by connecting multiple blue metering solenoid valve and nozzle composition low pressure common rail system systems of adding, can carry out free adjusting to adding blue pressure according to the demand of adding blue flow, because the larger volume of Tian Lan container main chamber has good pressure surge balanced capacity, can provide to multiple nozzles according to different Environmental Conditions simultaneously and add indigo plant, applied widely and cost-saving effect be remarkable.
Accompanying drawing explanation
Fig. 1 is the structural representation that adds blue loading system of a kind of compressed air-driven of the present invention, wherein:
wei Ye road,
for signal road,
for gas circuit,
for gas-liquid mixed,
for engine exhaust road;
Fig. 2 is the assembly structure schematic diagram of Fig. 1;
Fig. 3 is another embodiment's of Fig. 1 structural representation, wherein:
wei Ye road,
for signal road,
for gas circuit,
for gas-liquid mixed,
for engine exhaust road.
In figure: 1. source of compressed air, 2. add blue container, 3. add blue controller, 4. metering solenoid valve, 5. mixing chamber, 6. nozzle, 7. filter screen, 8. the first one-way valve, 9. the first reduction valve, 10. the second one-way valve, 11. second reduction valve, 12. air flues, 13. add blue container heating pipe line, 14. cooling water control valves, 15. temperature transducers, 16. exhaust gas temperature sensors, 17. engine operating condition information acquisition sensors, 18. main chamber, 19. upper minor chambers, 20. below secondary cavities, 21. communications/power interface, 22. add blue jetburner, 23. add blue filler, 24. residul discharging valves, 25. pressure-relief valves, 26. liquid level sensors, 27. compressed air inlets, 28. engine cooling water inlets, 29. engine cooling water outs, 30. sensor clusters, 31. catalyst converters.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, first embodiment of the present invention is: a kind of compressed air-driven add blue loading system, comprise source of compressed air 1, add blue container 2, add blue controller 3, metering solenoid valve 4, mixing chamber 5 and nozzle 6, source of compressed air 1 with add blue container 2 and be connected, add the output terminal of blue container 2 successively by filter screen 7, metering solenoid valve 4 is connected with the entrance of mixing chamber 5, another entrance of mixing chamber 5 is connected with source of compressed air 1, the outlet of mixing chamber 5 is connected with nozzle 6, nozzle 6 is positioned at engine exhaust pipe, the action current of metering solenoid valve 4 is controlled by adding blue controller 3.Metering solenoid valve 4 comprises switch electromagnetic valve and proportional electromagnetic valve, guarantees to spray to add blue accurate measurement.Add blue container 2 and be connected by the first one-way valve 8 with source of compressed air 1, the entrance of the first one-way valve 8 is connected, exports and adds blue container 2 by the first reduction valve 9 and source of compressed air 1 and is connected; Source of compressed air 1 is connected with the entrance of mixing chamber 5 by the second one-way valve 10, air flue 12, and the entrance of the second one-way valve 10 passes through that the second reduction valve 11 is connected with source of compressed air 1, outlet is connected with the entrance of mixing chamber 5.Add blue container 2 inside and be provided with the blue container heating pipe line 13 that adds being connected with cooling water pipe of engine road, the water intake that adds blue container heating pipe line 13 is provided with cooling water control valve 14, and cooling water control valve 14 is controlled its folding by adding blue controller 3.Add blue container heating pipe line 13 and also can realize by electrically heated mode, for example, realize heating etc. by electric heating wire is set.Add in blue container 2 and be provided with temperature transducer 15, temperature transducer 15 is transferred to temperature signal to add blue controller 3.Also comprise the exhaust gas temperature sensor 16 being arranged on engine exhaust pipe and be arranged on the engine operating condition information acquisition sensor 17 on motor, exhaust gas temperature sensor 16 and engine operating condition information acquisition sensor 17 are transferred to exhaust temperature signal and engine operating condition information signal to add blue controller 3 respectively.
Add blue container 2, add blue controller 3 and metering solenoid valve 4 both can be integrated into entirety, also can be separate.As shown in Figure 2, the integrated design of native system has three chambers for adding blue container 2, two secondary cavity upper minor chambers 19 that comprise a larger main chamber 18 and be positioned at that main chamber side arranges along the vertical direction and below secondary cavity 20, in main chamber 18, be contained with and add blue solution, add blue controller 3 and be integrated in upper minor chamber 19, metering solenoid valve 4 and mixing chamber 5 are integrated to be in the secondary cavity 20 of below.Metering solenoid valve 4 is fixed in the secondary cavity 20 of below by support, has both shortened blue tube road length, also metered injection solenoid valve 4 is played to effective protective action.Add blue controller 3 and adopt modular design, by withstand voltage, corrosion-resistant, resistant to elevated temperatures special material encapsulation, and use in the fixing upper minor chamber 19 of bolt.The end face of upper minor chamber 19 is lower than the end face of main chamber 18, the end face of secondary cavity 19 is provided with and the communication/power interface 21 that adds blue controller 3 and be connected up, also be provided with the blue jetburner 22 that adds being connected with mixing chamber 5 outlets, add blue jetburner 22 and be connected with nozzle 6.The top and bottom that adds blue container 2 main chamber 18 is respectively arranged with and adds blue filler 23 and residul discharging valve 24, adds on blue filler 23 and is provided with pressure-relief valve 25.Add in blue container 2 and be provided with liquid level sensor 26, liquid level sensor 26 is transferred to liquid level signal to add blue controller 3, in the time adding blue liquid level lower than setting value, reports to the police.The end face of main chamber 18 is respectively equipped with compressed air inlet 27, engine cooling water inlet 28, engine cooling water out 29 and sensor cluster 30, one end of compressed air inlet 27 is communicated with source of compressed air 1, the other end with add blue container 2 and be connected, engine cooling water inlet 28 and engine cooling water out 29 are communicated with the water intake and the water outlet that add blue container heating pipe line 13 respectively, sensor cluster 30 with add blue controller 3 and be connected.
When the present invention works, add blue container 2 and be communicated with by the first one-way valve 8, the first reduction valve 9 and source of compressed air 1, utilize pressurized with compressed air, the pressure that makes to add in blue container 2 keeps stable.Add the signal that blue controller 3 receives engine operating condition information acquisition sensor 17 and exhaust gas temperature sensor 16, what calculating current working was required adds blue emitted dose, by adjusting electric current, control metering solenoid valve 4, the indigo plant of adding after quantitatively filter screen 7 being filtered sprays into mixing chamber 5; Meanwhile, pressurized air is sent in mixing chamber 5 through the second reduction valve 11 and the second one-way valve 10, by the blue atomization of adding spraying into, spray in engine exhaust pipe finally by nozzle 6, engine exhaust spray into add blue outlet pipe in by catalyst converter 31, the engine exhaust after catalyst converter 31 purifies drains into atmosphere.
In the time adding pressure decreased in blue container 2 to setting value, the first one-way valve 8 can be opened automatically, pressure is compensated, thereby keep constant pressure.Add the signal that blue controller 3 sends according to temperature transducer 15, control the keying of cooling water control valve 14; When adding blue temperature when too low, cooling water control valve 14 is opened, and cooling water flow heats adding indigo plant through adding blue container heating pipe line 13, thereby has effectively prevented from adding blue freezing.
Add the signal that blue controller 3 receiving liquid level sensors 26 send, in the time adding blue liquid level lower than setting value, report to the police; Filling while adding indigo plant, is first opened pressure-relief valve 25 and is made to add pressure decreased to barometric pressure in blue container 2, by residul discharging valve 24, the residue adding in blue container 2 is discharged, and finally adds and adds indigo plant from adding blue filler 23.
As shown in Figure 3, an alternative embodiment of the invention and above-described embodiment are basic identical, and its difference is only to add and blue can be divided into three metered injection branch roads through filter screen 7 after out from adding blue container 2, arrives nozzle 6 respectively by metering solenoid valve 4 and mixing chamber 5.Can multiple metering injection branch road need to be set according to using.Add blue container 2 directly as a low pressure common rail system system, the larger volume of its main chamber 18 has good pressure surge balanced capacity, can provide to multiple nozzles 6 according to different Environmental Conditions and add indigo plant.
Add blue container 2 although more used herein; Add blue controller 3; Metering solenoid valve 4; Mixing chamber 5; Nozzle 6; Filter screen 7; The first one-way valve 8; The first reduction valve 9; The second one-way valve 10; The second reduction valve 11; Air flue 12; Add blue container heating pipe line 13; Cooling water control valve 14; Temperature transducer 15; Engine operating condition information acquisition sensor 17; Add blue filler 23; Residul discharging valve 24; Pressure-relief valve 25; Liquid level sensor 26 terms such as grade, but do not get rid of the possibility that uses other terms.Use these terms to be only used to describe more easily and explain essence of the present invention; It is construed to any additional restriction is all contrary with spirit of the present invention.The content not being described in detail in this specification belongs to the known technology of professional and technical personnel in the field.
Claims (8)
- A compressed air-driven add blue loading system, comprise source of compressed air (1), add blue container (2), add blue controller (3), metering solenoid valve (4), mixing chamber (5) and nozzle (6), it is characterized in that: described source of compressed air (1) with add blue container (2) and be connected, the described output terminal that adds blue container (2) is connected with the entrance of mixing chamber (5) by metering solenoid valve (4), another entrance of described mixing chamber (5) is connected with source of compressed air (1), the outlet of described mixing chamber (5) is connected with nozzle (6), described nozzle (6) is positioned at engine exhaust pipe, the action current of described metering solenoid valve (4) is controlled by adding blue controller (3).
- A kind of compressed air-driven according to claim 1 add blue loading system, it is characterized in that: described in add blue container (2) inside be provided be connected with cooling water pipe of engine road add blue container heating pipe line (13), the described water intake that adds blue container heating pipe line (13) is provided with cooling water control valve (14), described cooling water control valve (14) is controlled its folding by adding blue controller (3), described adding in blue container (2) is provided with temperature transducer (15), and described temperature transducer (15) is transferred to temperature signal to add blue controller (3).
- A kind of compressed air-driven according to claim 1 add blue loading system, it is characterized in that: described in add blue container (2) and be connected by the first one-way valve (8) with source of compressed air (1), the entrance of described the first one-way valve (8) is connected, exports and adds blue container (2) by the first reduction valve (9) and source of compressed air (1) and is connected; Described source of compressed air (1) is connected with the entrance of mixing chamber (5) by the second one-way valve (10), and the entrance of described the second one-way valve (10) passes through that the second reduction valve (11) is connected with source of compressed air (1), outlet is connected with the entrance of mixing chamber (5).
- A kind of compressed air-driven according to claim 1 add blue loading system, it is characterized in that: also comprise the exhaust gas temperature sensor (16) being arranged on engine exhaust pipe and be arranged on the engine operating condition information acquisition sensor (17) on motor, described exhaust gas temperature sensor (16) and engine operating condition information acquisition sensor (17) are transferred to exhaust temperature signal and engine operating condition information signal to add blue controller (3) respectively.
- A kind of compressed air-driven according to claim 1 add blue loading system, it is characterized in that: the metered injection branch road that described metering solenoid valve (4), mixing chamber (5) and nozzle (6) form is multichannel.
- 6. according to the blue loading system that adds of a kind of compressed air-driven described in arbitrary claim in claim 1-5, it is characterized in that: described in add blue container (2) and there are three chambers, comprise a larger main chamber (18) and be positioned at two secondary cavities (19 that arrange along the vertical direction main chamber side, 20), in described main chamber (18), be contained with and add blue solution, the described blue controller (3) that adds is integrated in upper minor chamber (19), described metering solenoid valve (4) and mixing chamber (5) are integrated in below secondary cavity (20), the end face of described upper minor chamber (19) is lower than the end face of main chamber (18), be provided with and the communication/power interface (21) that adds blue controller (3) and be connected at the end face of described upper minor chamber (19), also be provided be connected with mixing chamber (5) outlet add blue jetburner (22), the described blue jetburner (22) that adds is connected with nozzle (6).
- A kind of compressed air-driven according to claim 6 add blue loading system, it is characterized in that: described in add blue container (2) main chamber (18) top and bottom be respectively arranged with and add blue filler (23) and residul discharging valve (24), described in add and on blue filler (23), be provided with pressure-relief valve (25).
- A kind of compressed air-driven according to claim 7 add blue loading system, it is characterized in that: described in add in blue container (2) and be provided with liquid level sensor (26), described liquid level sensor (26) is transferred to liquid level signal to add blue controller (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410059869.3A CN103790680B (en) | 2014-02-21 | 2014-02-21 | A kind of compressed air-driven add blue loading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410059869.3A CN103790680B (en) | 2014-02-21 | 2014-02-21 | A kind of compressed air-driven add blue loading system |
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| Publication Number | Publication Date |
|---|---|
| CN103790680A true CN103790680A (en) | 2014-05-14 |
| CN103790680B CN103790680B (en) | 2016-08-24 |
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| CN201410059869.3A Active CN103790680B (en) | 2014-02-21 | 2014-02-21 | A kind of compressed air-driven add blue loading system |
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Cited By (5)
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| CN104110293A (en) * | 2014-06-09 | 2014-10-22 | 武汉添蓝科技有限责任公司 | Marine diesel engine SCR common rail type urea solution spraying system |
| CN104500183A (en) * | 2014-10-17 | 2015-04-08 | 武汉添蓝科技有限责任公司 | Siphon type Adblue urea adding method and device |
| CN105986861A (en) * | 2015-02-10 | 2016-10-05 | 安徽艾可蓝节能环保科技有限公司 | SCR tail gas treatment system for engine |
| CN107559080A (en) * | 2017-10-10 | 2018-01-09 | 广西玉柴机器股份有限公司 | Diesel engine post-processing system |
| CN107559079A (en) * | 2017-10-10 | 2018-01-09 | 广西玉柴机器股份有限公司 | Diesel engine post-processing system |
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| Publication number | Publication date |
|---|---|
| CN103790680B (en) | 2016-08-24 |
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