CN104500183A - Siphon type Adblue urea adding method and device - Google Patents
Siphon type Adblue urea adding method and device Download PDFInfo
- Publication number
- CN104500183A CN104500183A CN201410552494.4A CN201410552494A CN104500183A CN 104500183 A CN104500183 A CN 104500183A CN 201410552494 A CN201410552494 A CN 201410552494A CN 104500183 A CN104500183 A CN 104500183A
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- China
- Prior art keywords
- blue
- add
- spray gun
- siphon
- holding vessel
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Jet Pumps And Other Pumps (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a siphon type Adblue urea adding method and device. An output end of an Adblue urea storage tank is connected with an Adblue urea input end of a siphon spray gun by a measurement electromagnetic valve, the liquid level of the Adblue urea storage tank is higher than the liquid level of the siphon spray gun; a compressed air source is connected with an air input end of the siphon spray gun, and negative pressure is formed on the outlet of the siphon spray gun; a control unit is connected with the measurement electromagnetic valve to control the starting frequency and the opening degree of the measurement electromagnetic valve. The Adblue urea and the compressed air are mixed outside and then sprayed into an engine exhaust pipe at the state of gas-liquid mixture, the crystal problem of an Adblue urea channel is solved, and the measurement precision and the atomization quality of the Adblue urea are increased; a measurement pump is not needed, so that the manufacture difficulty and the production cost of the adding device are reduced; the requirement for electric heating is lowered, and the extra engine power consumption is reduced.
Description
Technical field
The present invention relates to Exhaust Control of Engine technical field, be specifically related to add blue charging method and device needed for diesel engine selective catalytic reduction (hereinafter referred to as " SCR ") technology.
Background technique
Nitrogen oxide is (hereinafter referred to as " NO
x") be one of main noxious emission of motor, more and more heavier to the pollution of air, by extensive concern.Along with the lasting upgrading of Abgasgesetz, domestic and international motor manufacturer tendency adopts SCR technology to reduce the NO of diesel engine
xdischarge.
Adding indigo plant is the reducing agent that SCR technology adopts, and the amount of its filling directly affects NO
xreduction level and air is caused to the degree of secondary pollution, therefore adding blue filling quality is the required key problem solved of SCR technology.
What SCR system was current adds the mode that blue filling apparatus mainly adopts metering pump, add blue with pressurized air in pump head internal mix, spray in engine exhaust pipe with the form of gas-liquid mixture.Mainly there is following problem in which: the mixing chamber of pump head inside is very little, adds blue easily in the formation crystallization of mixing chamber position, causes adding blue flow velocity and forbidden to decline with atomization quality; Metering pump adds specifically executing the task of blue flow velocity needed for bearing, and belong to accurate metering unit, its design difficulty is large, cost is high; Store the devices such as blue tank, pump head, pick-up tube, liquid return pipe that add adding indigo plant and need heating and thermal insulation under cold conditions, and except adding blue tank, other device often adopts electrical heat tracing, causes extra power consumption.Without adding of assisting of air, blue filling apparatus is current also a small amount of application, but adds blue atomization quality for ensureing, add blue jet pressure higher, and nozzle bore is very little, has that system cost is high, the problem of the easy Crystallization Plugging of nozzle.
Summary of the invention
The present invention aims to provide a kind of hydrocone type and adds blue charging method and device, reaches the object of annotating without pump, avoiding crystallization and reducing costs.
For achieving the above object, a kind of hydrocone type designed by the present invention adds blue charging method, it is characterized in that comprising:
1) keep adding the liquid level of the liquid level in blue holding vessel higher than siphon spray gun;
2) utilize pressurized air siphon lance outlet formed negative pressure, and will add indigo plant spray from siphon lance outlet;
3) control to be arranged on the open frequency of the metering solenoid valve added between blue holding vessel and siphon spray gun by control unit and aperture regulates the flow velocity adding indigo plant.
Preferably, utilize pressurized air to clean metering solenoid valve to be exported to and residually in pipeline between siphon lance outlet and siphon spray gun to add indigo plant.Like this, the problem of the easy Crystallization Plugging of nozzle is effectively prevented.
A kind of hydrocone type of the present invention's design adds blue filling apparatus, comprise and add blue holding vessel, control unit, source of compressed air, metering solenoid valve and siphon spray gun, it is characterized in that: described in add blue holding vessel output terminal and be connected with the blue input end that adds of siphon spray gun by metering solenoid valve, described in add the liquid level of liquid level higher than described siphon spray gun of blue holding vessel; Described source of compressed air is connected with the air input of described siphon spray gun, and goes out interruption-forming negative pressure at described siphon spray gun; Described control unit is connected with described metering solenoid valve the open frequency and aperture that control metering solenoid valve.
Preferably, described source of compressed air to be exported with described metering solenoid valve by switch electromagnetic valve and is connected; The keying of described control unit control switch solenoid valve.Like this, when adding blue flow velocity and being zero, opening switch solenoid valve, utilizes pressurized air to clean clean by the residual indigo plant of adding in pipeline and siphon spray gun.
Further, reduction valve is provided with between described source of compressed air and described siphon spray gun air input.Like this, stable condition of negative pressure is maintained by reduction valve at siphon lance outlet.
Further, add blue holding vessel inside described in and be provided with heat exchanger and temperature transducer; Described control unit controls the keying of described heat exchanger, and described heat exchanger adopts electrically heated mode or thermal source to adopt cooling water or the engine fluid of motor; Temperature signal is transferred to control unit by described temperature transducer.Like this, by any one in above-mentioned three kinds of mode of heatings, the indigo plant of adding of adding in blue holding vessel is heated, thus effectively prevent from adding blue freezing.
Further, described in add blue holding vessel top be provided with and add blue filler, described in add bottom blue holding vessel and be provided with residul discharging port.By residul discharging port, the residue added in blue holding vessel is discharged, then added by filler and add indigo plant.
Further, described in add in blue holding vessel and be provided with liquid level sensor, liquid level signal is transferred to control unit by described liquid level sensor.
Further, in described siphon spray gun add blue channel and compressed air channel is separate passage; Described add blue channel run through described compressed air channel one end be export with metering solenoid valve be connected add blue input end, the other end stretches out described compressed air channel.Like this, add blue channel and the compressed air channel of siphon spray gun are separate two-fluid design, add the inside that blue channel is in compressed air channel, and stretch out from compressed air channel end, thus form negative pressure at siphon lance outlet.
The invention has the advantages that: described a kind of hydrocone type adds blue filling apparatus, have employed the mode not needing metering pump, add indigo plant and achieve external mix with pressurized air, both ensure that and sprayed in engine exhaust pipe with the form of gas-liquid mixture, solve again the crystallisation problems of adding in blue channel, improve and add blue measuring accuracy and atomization quality; Described a kind of hydrocone type adds blue filling apparatus, saves metering pump and reduces the manufacture difficulty and cost of production of adding blue filling apparatus; Described a kind of hydrocone type adds blue filling apparatus, eliminate metering pump, pick-up tube and liquid return pipe, and pressurized air is in outside pipeline in siphon piping, to the indigo plant of adding in inner channel, there is insulation effect, therefore reduce to a great extent electrically heated requirement, decrease extra motor power consumption.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present invention
In figure: add blue holding vessel 1, control unit 2, source of compressed air 3, metering solenoid valve 4, siphon spray gun 5 (adding blue channel 5.1, compressed air channel 5.2), switch electromagnetic valve 6, reduction valve 7, heat exchanger 8, temperature transducer 9 add blue filler 10, residul discharging port 11, liquid level sensor 12.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described:
As shown in Figure 1, a kind of hydrocone type of the present invention's design adds blue filling apparatus, comprise and add blue holding vessel 1, control unit 2, source of compressed air 3, metering solenoid valve 4 and siphon spray gun 5, describedly add blue holding vessel 1 output terminal and be connected with the blue input end that adds of siphon spray gun 5 by metering solenoid valve 4, described in add the liquid level of liquid level higher than described siphon spray gun 5 of blue holding vessel 1; Described source of compressed air 3 is connected with the air input of described siphon spray gun 5, and goes out interruption-forming negative pressure at described siphon spray gun 5; Described control unit 2 is connected with described metering solenoid valve 4 open frequency and aperture that control metering solenoid valve 4.
Preferably, described source of compressed air 3 is exported with described metering solenoid valve 4 by switch electromagnetic valve 6 and is connected; The keying of described control unit 2 control switch solenoid valve 6.Like this, when adding blue flow velocity and being zero, opening switch solenoid valve 6, utilizes pressurized air to clean clean by the residual indigo plant of adding in pipeline and siphon spray gun 5.
Further, reduction valve 7 is provided with between described source of compressed air 3 and described siphon spray gun 5 air input.Like this, the stable condition of negative pressure of maintenance is exported by reduction valve 7 at siphon spray gun 5.
Further, add blue holding vessel 1 inside described in and be provided with heat exchanger 8 and temperature transducer 9; Described control unit 2 controls the keying of described heat exchanger 8, and described heat exchanger 8 adopts electrically heated mode or thermal source to adopt cooling water or the engine fluid of motor; Temperature signal is transferred to control unit 2 by described temperature transducer 9.Like this, by any one in above-mentioned three kinds of mode of heatings, the indigo plant of adding of adding in blue holding vessel 1 is heated, thus effectively prevent from adding blue freezing.
Further, described in add blue holding vessel 1 top be provided with and add blue filler 10, described in add bottom blue holding vessel 1 and be provided with residul discharging port 11.By residul discharging port 11, the residue added in blue holding vessel 1 is discharged, then added by filler 10 and add indigo plant.
Further, described in add in blue holding vessel 1 and be provided with liquid level sensor 12, liquid level signal is transferred to control unit 2 by described liquid level sensor 12.
Further, in described siphon spray gun 5 add blue channel 5.1 and compressed air channel 5.2 is separate passage; Described add blue channel 5.1 run through described compressed air channel 5.2 one end be export with metering solenoid valve 4 be connected add blue input end, the other end stretches out described compressed air channel 5.2.Like this, add blue channel 5.1 and the compressed air channel 5.2 of siphon spray gun 5 are separate two-fluid design, add the inside that blue channel 5.1 is in compressed air channel 5.2, and stretch out from compressed air channel 5.2 end, thus go out interruption-forming negative pressure at siphon spray gun 5.
A kind of hydrocone type designed by the present invention adds blue charging method, it is characterized in that comprising:
Keep adding the liquid level of the liquid level in blue holding vessel 1 higher than siphon spray gun 5;
Utilize pressurized air to go out interruption-forming negative pressure at siphon spray gun 5, and will add and blue export ejection from siphon spray gun 5;
Control to be arranged on the open frequency of the metering solenoid valve 4 added between blue holding vessel 1 and siphon spray gun 5 by control unit 2 and aperture regulates the flow velocity adding indigo plant.
Preferably, utilize pressurized air clean metering solenoid valve 4 be exported to siphon spray gun 5 export between pipeline and siphon spray gun 5 in residual add indigo plant.Like this, the problem of the easy Crystallization Plugging of nozzle is effectively prevented.
The control unit be applied in said method and device designed by the present invention, is characterized in that, comprising:
Signal receiving module, for receive from needed for motor add blue flow velocity signal, the exhaust back pressure signal added in temperature signal and liquid level signal in blue holding vessel 1 and engine exhaust pipe;
Storage, adds exhaust back pressure in blue liquid level and engine exhaust pipe to the interact relation adding blue flow velocity for storing to add the open frequency of blue flow velocity and metering solenoid valve 4 and the corresponding relation of aperture and add in blue holding vessel;
Processor, for sending instruction to command output module;
Command output module, the instruction for receiving processor controls to add blue flow velocity and heating and adds and add indigo plant in blue holding vessel 1;
During control unit work:
The blue flow velocity signal that adds needed for the motor received is transferred to processor by signal receiving module, simultaneously, the liquid level signal received and back pressure signal are transferred to processor by signal receiving module, processor is searched in memory to add in blue holding vessel 1 according to above-mentioned liquid level signal and is added exhaust back pressure in blue liquid level and engine exhaust pipe and, to the interact relation adding blue flow velocity, then revise the open frequency of metering solenoid valve and aperture according to above-mentioned interact relation;
Then, the open frequency of revised metering solenoid valve and opening amount signal are transferred to command output module by processor, and command output module receives instruction and controls to add blue flow velocity;
When adding that in blue holding vessel, temperature is close to freezing point, sending heating instructions directly to command output module after processor receives signal from signal receiving module and the indigo plant of adding of adding in blue holding vessel 1 is heated.
Working procedure of the present invention is as follows:
During system works, control unit 2 receives and adds blue emitted dose needed for motor, controls frequency and the aperture of metering solenoid valve 4, will add quantitatively in blue feeding siphon spray gun 5.Pressurized air in source of compressed air 3 maintains stable pressure after reduction valve 7, and in the outlet port of siphon spray gun 5---that is to say that nozzle place utilizes compressed-air actuated high speed flow to form stable condition of negative pressure, make to add indigo plant and adding flowing in blue channel 5.1, the recycling difference of liquid level of adding between blue holding vessel 1 and siphon spray gun 5 produces potential energy thus promotes to add blue flowing, makes to add indigo plant from adding ejection in blue channel 5.1.Meanwhile, after reduction valve 7 reduces pressure, the pressurized air of pressure stability is atomized the indigo plant of adding from siphon spray gun 5 sucking-off, and sprays in engine exhaust pipe.
The signal that control unit 2 receiving liquid level sensor 12 and exhaust back pressure sensor send, when adding blue liquid level and exhaust back pressure changes, utilizes control unit 2 pairs of flow velocitys to revise.Filling is when adding indigo plant, and add indigo plant if residual and there is impurity or inefficacy, the residue that will add in blue holding vessel 1 by residul discharging port 11 is discharged, and finally adds add indigo plant from adding blue filler 10.
The signal that control unit 2 sends according to temperature transducer 9, controls the keying of heat exchanger 8; When adding blue temperature and being too low, heat exchanger 8 is opened, and heats with the indigo plant of adding of adding in blue holding vessel 1, thus effectively prevent the crystallization adding indigo plant.
Control unit 2 is according to the keying of the Signal-controlled switch solenoid valve 6 of motor, when adding blue flow velocity and being zero, the unlatching of control unit 2 control switch solenoid valve 6, utilizes and adds blue purging through the post-decompression pressurized air of reduction valve 7 to the remnants in pipeline and siphon spray gun 5, effectively prevent the appearance of crystallization; When adding blue ejecting system and normally working, the closedown of control unit 2 control switch magnet valve 6, prevents adding indigo plant and enters in compressed air line through switch electromagnetic valve.
Claims (9)
1. hydrocone type adds a blue charging method, it is characterized in that, comprising:
1) keep adding the liquid level of the liquid level in blue holding vessel higher than siphon spray gun;
2) utilize pressurized air siphon lance outlet formed negative pressure, and will add indigo plant spray from siphon lance outlet;
3) control to be arranged on the open frequency of the metering solenoid valve added between blue holding vessel and siphon spray gun by control unit and aperture regulates the flow velocity adding indigo plant.
2. hydrocone type according to claim 1 adds blue charging method, it is characterized in that: utilize pressurized air to clean metering solenoid valve and be exported to and residually in pipeline between siphon lance outlet and siphon spray gun add indigo plant.
3. a hydrocone type adds blue filling apparatus, comprise and add blue holding vessel, control unit, source of compressed air, metering solenoid valve and siphon spray gun, it is characterized in that: described in add blue holding vessel output terminal and be connected with the blue input end that adds of siphon spray gun by metering solenoid valve, described in add the liquid level of liquid level higher than described siphon spray gun of blue holding vessel; Described source of compressed air is connected with the air input of described siphon spray gun, and goes out interruption-forming negative pressure at described siphon spray gun; Described control unit is connected with described metering solenoid valve the open frequency and aperture that control metering solenoid valve.
4. hydrocone type adds blue filling apparatus according to claim 3, it is characterized in that: described source of compressed air to be exported with described metering solenoid valve by switch electromagnetic valve and is connected; The keying of described control unit control switch solenoid valve.
5. hydrocone type adds blue filling apparatus according to claim 3, it is characterized in that: be provided with reduction valve between described source of compressed air and described siphon spray gun air input.
6. hydrocone type adds blue filling apparatus according to claim 3, it is characterized in that: described in add blue holding vessel inside and be provided with heat exchanger and temperature transducer; Described control unit controls the keying of described heat exchanger, and described heat exchanger adopts electrically heated mode or thermal source to adopt cooling water or the engine fluid of motor; Temperature signal is transferred to control unit by described temperature transducer.
7. hydrocone type adds blue filling apparatus according to claim 3, it is characterized in that: described in add blue holding vessel top be provided with and add blue filler, described in add bottom blue holding vessel and be provided with residul discharging port.
8. according to claim 3 or 7, hydrocone type adds blue filling apparatus, it is characterized in that: described in add in blue holding vessel and be provided with liquid level sensor, liquid level signal is transferred to control unit by described liquid level sensor.
9. hydrocone type adds blue filling apparatus according to claim 3, it is characterized in that: in described siphon spray gun add blue channel and compressed air channel is separate passage; Described add blue channel run through described compressed air channel one end be export with metering solenoid valve be connected add blue input end, the other end stretches out described compressed air channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410552494.4A CN104500183B (en) | 2014-10-17 | 2014-10-17 | Hydrocone type adds blue charging method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410552494.4A CN104500183B (en) | 2014-10-17 | 2014-10-17 | Hydrocone type adds blue charging method and device |
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| CN104500183A true CN104500183A (en) | 2015-04-08 |
| CN104500183B CN104500183B (en) | 2018-03-20 |
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| CN201410552494.4A Active CN104500183B (en) | 2014-10-17 | 2014-10-17 | Hydrocone type adds blue charging method and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108722704A (en) * | 2018-06-12 | 2018-11-02 | 江苏普华盛包装科技有限公司 | Dioxygen water atomization plant |
| CN109382354A (en) * | 2018-11-20 | 2019-02-26 | 广西电网有限责任公司南宁供电局 | Disconnecting switch high-pressure wash oiling device |
| CN109436331A (en) * | 2018-11-19 | 2019-03-08 | 深圳供电局有限公司 | Cleaning system and cleaning method based on unmanned aerial vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108722704A (en) * | 2018-06-12 | 2018-11-02 | 江苏普华盛包装科技有限公司 | Dioxygen water atomization plant |
| CN109436331A (en) * | 2018-11-19 | 2019-03-08 | 深圳供电局有限公司 | Cleaning system and cleaning method based on unmanned aerial vehicle |
| CN109382354A (en) * | 2018-11-20 | 2019-02-26 | 广西电网有限责任公司南宁供电局 | Disconnecting switch high-pressure wash oiling device |
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| CN104500183B (en) | 2018-03-20 |
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Owner name: WUHAN TIANLAN MOTOR CONTROL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WUHAN TIANLAN TECHNOLOGY CO., LTD. Effective date: 20150824 |
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Effective date of registration: 20200721 Address after: No.151, Jinling East Road, Weiting Town, Suzhou Industrial Park, Jiangsu Province, 215000 Patentee after: SUZHOU TIANLAN POWER TECHNOLOGY Co.,Ltd. Address before: 312 room 7-4, building 430074, pioneer Plaza, East Lake New Technology Development Zone, Wuhan, Hubei, Optics Valley Patentee before: WUHAN TIANLAN ENGINE EMISSION TECHNOLOGY Co.,Ltd. |