CN104500183B - Hydrocone type adds blue charging method and device - Google Patents
Hydrocone type adds blue charging method and device Download PDFInfo
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- CN104500183B CN104500183B CN201410552494.4A CN201410552494A CN104500183B CN 104500183 B CN104500183 B CN 104500183B CN 201410552494 A CN201410552494 A CN 201410552494A CN 104500183 B CN104500183 B CN 104500183B
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- blue
- spray gun
- siphon
- add
- compressed air
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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)
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Abstract
The present invention discloses a kind of hydrocone type and adds blue charging method and device, adds blue holding vessel output end and is connected by metering solenoid valve with the blue input that adds of siphon spray gun, and the liquid level for adding blue holding vessel is higher than the liquid level of siphon spray gun；Compressed air source is connected with the air input of siphon spray gun, and forms negative pressure in the outlet of siphon spray gun；Control unit is connected with metering solenoid valve controls the open frequency and aperture of metering solenoid valve.Adding blue and compressed air realizes external mix, both ensure that and has been sprayed into the form of gas-liquid mixture in the exhaust pipe of engine, has solved the crystallisation problems added in blue channel again, improve and add blue measuring accuracy and atomization quality；Saving measuring pump reduces the manufacture difficulty and production cost for adding blue filling apparatus；Reducing to electrically heated requirement, reduces extra engine power consumption.
Description
Technical field
The present invention relates to Exhaust Control of Engine technical field, and in particular to (following to diesel engine SCR
Referred to as " SCR ") add blue charging method and device needed for technology.
Background technology
Nitrogen oxides (hereinafter referred to as " NOX") it is one of main noxious emission of engine, the pollution to air is more next
It is heavier, by extensive concern.With the lasting upgrading of Abgasgesetz, domestic and international engine manufacturer tendency is reduced using SCR technology
The NO of diesel engineXDischarge.
It is reducing agent used by SCR technology to add indigo plant, and its amount filled directly affects NOXReduction it is horizontal and to air
The degree of secondary pollution is caused, therefore the filling quality for adding indigo plant is the key problem solved needed for SCR technology.
SCR system it is current add blue filling apparatus mainly using measuring pump by the way of, add blue and compressed air in pump head
Portion mixes, and is sprayed into the form of gas-liquid mixture in the exhaust pipe of engine.Which is primarily present problems with：Inside pump head
Hybrid chamber very little, add blue easily formed at hybrid chamber position and crystallize, cause to add that blue flow velocity is inaccurate and atomization quality declines；Measuring pump is held
Add the specific execution task of blue flow velocity needed for load, belong to accurate metering unit, its design difficulty is big, cost is high；Storage adds indigo plant
The devices such as blue tank, pump head, pipette, liquid back pipe that add need heating and thermal insulation under cold conditions, it is other and in addition to blue tank is added
Device often uses electrical heat tracing, causes extra power consumption.Without air auxiliary add blue filling apparatus currently also have it is a small amount of
Using but to ensure to add the atomization quality of indigo plant, it is higher to add blue injection pressure, and nozzle bore very little, there is that system cost is high, spray
The problem of mouth easy Crystallization Plugging.
The content of the invention
The present invention is intended to provide a kind of hydrocone type adds blue charging method and device, reach no pump filling, avoid crystallizing and drop
The purpose of low cost.
To achieve the above object, a kind of hydrocone type designed by the present invention adds blue charging method, it is characterised in that including：
1) liquid level for keeping adding in blue holding vessel is higher than the liquid level of siphon spray gun；
2) negative pressure is formed in siphon lance outlet using compressed air, and will added blue from the ejection of siphon lance outlet；
3) the unlatching frequency for adding the metering solenoid valve between blue holding vessel and siphon spray gun is arranged on by control unit control
Rate and aperture regulation add the flow velocity of indigo plant.
Preferably, using compressed air clean metering solenoid valve be exported to pipeline between siphon lance outlet and
Residual adds indigo plant in siphon spray gun.So, the problem of being effectively prevented nozzle easy Crystallization Plugging.
A kind of hydrocone type that the present invention designs adds blue filling apparatus, including adds blue holding vessel, control unit, compressed air
Source, metering solenoid valve and siphon spray gun, it is characterised in that：It is described add blue holding vessel output end and pass through metering solenoid valve and siphon spray
The blue input that adds of rifle is connected, and the liquid level for adding blue holding vessel is higher than the liquid level of the siphon spray gun；The compressed air source
It is connected with the air input of the siphon spray gun, and negative pressure is formed in the outlet of the siphon spray gun；Described control unit with
The metering solenoid valve, which is connected, controls the open frequency and aperture of metering solenoid valve.
Preferably, the compressed air source is connected by switch electromagnetic valve and metering solenoid valve outlet；Institute
State the keying of control unit controlling switch magnetic valve.So, when it is zero to add blue flow velocity, switch electromagnetic valve is opened, utilizes compression
Residual in pipeline and siphon spray gun is added indigo plant and cleaned up by air.
Further, pressure-reducing valve is provided between the compressed air source and the siphon spray gun air input.So, lead to
Cross pressure-reducing valve and maintain stable condition of negative pressure in siphon lance outlet.
Further, described add is provided with heat exchanger and temperature sensor inside blue holding vessel；Described control unit controls
The keying of the heat exchanger, the heat exchanger use the cooling water of engine using electrically heated mode or thermal source or started
Machine anti-icing fluid；Temperature signal is transferred to control unit by the temperature sensor.So, by above-mentioned three kinds of mode of heatings
Any one is heated to the indigo plant that adds added in blue holding vessel, so as to effectively prevent adding the icing of indigo plant.
Further, the top for adding blue holding vessel, which is provided with, adds blue filler, it is described add blue storage pot bottom and be provided with put
Residual mouth.The residue added in blue holding vessel is discharged by residul discharging port, is then added by filler and adds indigo plant.
Further, described add in blue holding vessel is provided with liquid level sensor, and the liquid level sensor passes liquid level signal
It is defeated by control unit.
Further, the add blue channel and compressed air channel in the siphon spray gun are separate passage；It is described
It is to add blue input with what metering solenoid valve outlet connected to add blue channel through described compressed air channel one end, and the other end stretches out
The compressed air channel.So, add blue channel and the compressed air channel of siphon spray gun design for separate two-fluid,
Add the inside that blue channel is in compressed air channel, and stretched out from compressed air channel end, so as in siphon lance outlet shape
Into negative pressure.
The advantage of the invention is that：A kind of hydrocone type adds blue filling apparatus, employs the mode for being not required to measuring pump, adds
It is blue to realize external mix with compressed air, it both ensure that and sprayed into the form of gas-liquid mixture in the exhaust pipe of engine, solved again
Determine the crystallisation problems added in blue channel, improved and add blue measuring accuracy and atomization quality；A kind of hydrocone type adds blue filling
Device, saving measuring pump reduces the manufacture difficulty and production cost for adding blue filling apparatus；A kind of hydrocone type adds blue filling
Device, measuring pump, pipette and liquid back pipe are eliminated, and compressed air is on the outside of pipeline in siphon piping, to inner channel
In add it is blue there is insulation effect, therefore largely reduce and to electrically heated requirement, reduce extra engine
Power consumption.
Brief description of the drawings
Fig. 1 is the principle schematic diagram of the present invention
In figure：Add blue holding vessel 1, control unit 2, compressed air source 3, metering solenoid valve 4, siphon spray gun 5 and (add blue channel
5.1st, compressed air channel 5.2), switch electromagnetic valve 6, pressure-reducing valve 7, heat exchanger 8, temperature sensor 9 add blue filler 10, put
Residual mouth 11, liquid level sensor 12.
Embodiment
The present invention is further described with specific embodiment below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of hydrocone type that the present invention designs adds blue filling apparatus, including add blue holding vessel 1, control unit
2nd, compressed air source 3, metering solenoid valve 4 and siphon spray gun 5, it is described to add the blue output end of holding vessel 1 and pass through metering solenoid valve 4 and rainbow
The blue input that adds for inhaling spray gun 5 is connected, and the liquid level for adding blue holding vessel 1 is higher than the liquid level of the siphon spray gun 5；The compression
Air-source 3 is connected with the air input of the siphon spray gun 5, and forms negative pressure in the outlet of the siphon spray gun 5；The control
Unit 2 processed is connected with the metering solenoid valve 4 controls the open frequency and aperture of metering solenoid valve 4.
Preferably, the compressed air source 3 is connected by switch electromagnetic valve 6 and the metering solenoid valve 4 outlet；
The keying of the controlling switch magnetic valve 6 of described control unit 2.So, when it is zero to add blue flow velocity, switch electromagnetic valve 6 is opened, is utilized
Residual in pipeline and siphon spray gun 5 is added indigo plant and cleaned up by compressed air.
Further, pressure-reducing valve 7 is provided between the compressed air source 3 and the air input of siphon spray gun 5.This
Sample, the condition of negative pressure for remaining stable is exported in siphon spray gun 5 by pressure-reducing valve 7.
Further, described add is provided with heat exchanger 8 and temperature sensor 9 inside blue holding vessel 1；Described control unit 2
The keying of the heat exchanger 8 is controlled, the heat exchanger 8 uses the cooling water of engine using electrically heated mode or thermal source
Or engine fluid；Temperature signal is transferred to control unit 2 by the temperature sensor 9.So, above-mentioned three kinds heating are passed through
Any one in mode heats to adding the indigo plant that adds in blue holding vessel 1, so as to effectively prevent adding the icing of indigo plant.
Further, the top for adding blue holding vessel 1, which is provided with, adds blue filler 10, described to add the blue bottom of holding vessel 1 and set
There is residul discharging port 11.The residue added in blue holding vessel 1 is discharged by residul discharging port 11, is then added by filler 10 and adds indigo plant.
Further, described add in blue holding vessel 1 is provided with liquid level sensor 12, and the liquid level sensor 12 believes liquid level
Number it is transferred to control unit 2.
Further, add blue channel 5.1 and the compressed air channel 5.2 in the siphon spray gun 5 lead to for separate
Road；It is described that to add blue channel 5.1 through described one end of compressed air channel 5.2 be blue defeated with adding for the outlet of metering solenoid valve 4 connection
Enter end, the other end stretches out the compressed air channel 5.2.So, siphon spray gun 5 adds blue channel 5.1 and compressed air channel
5.2 design for separate two-fluid, add blue channel 5.1 and are in the inside of compressed air channel 5.2, and lead to from compressed air
The end of road 5.2 is stretched out, so as to form negative pressure in the outlet of siphon spray gun 5.
A kind of hydrocone type designed by the present invention adds blue charging method, it is characterised in that including：
Keep adding the liquid level that the liquid level in blue holding vessel 1 is higher than siphon spray gun 5；
Negative pressure is formed in the outlet of siphon spray gun 5 using compressed air, and indigo plant will be added and export ejection from siphon spray gun 5；
Controlled by control unit 2 and be arranged on the unlatching for adding the metering solenoid valve 4 between blue holding vessel 1 and siphon spray gun 5
Frequency and aperture regulation add the flow velocity of indigo plant.
Preferably, the pipeline being exported to using compressed air cleaning metering solenoid valve 4 between the outlet of siphon spray gun 5
Add indigo plant with what is remained in siphon spray gun 5.So, the problem of being effectively prevented nozzle easy Crystallization Plugging.
The control unit being applied in the above method and device designed by the present invention, it is characterised in that including：
Signal receiving module, for receiving from adding blue flow velocity signal, add in blue holding vessel 1 temperature and believe needed for engine
Number and liquid level signal and the exhaust pipe of engine in exhaust back pressure signal；
Memory, add the open frequency of blue flow velocity and metering solenoid valve 4 and the corresponding relation of aperture for storage and add indigo plant
Add exhaust back pressure in blue liquid level and the exhaust pipe of engine in holding vessel to adding the influence relation of blue flow velocity；
Processor, for sending instruction to command output module；
Command output module, the instruction control for reception processing device adds the flow velocity of indigo plant and heating adds in blue holding vessel 1
Add indigo plant；
When control unit works：
The blue flow velocity signal that adds needed for the engine received is transferred to processor by signal receiving module, meanwhile, signal
The liquid level signal received and back pressure signal are transferred to processor by receiving module, and processor is according to above-mentioned liquid level signal in memory
Middle lookup adds the influence relation for adding exhaust back pressure in blue liquid level and the exhaust pipe of engine in blue holding vessel 1 to adding blue flow velocity, then
It is modified according to the open frequency and aperture of above-mentioned influence relation pair metering solenoid valve；
Then, the open frequency of revised metering solenoid valve and opening amount signal are transferred to instruction output mould by processor
Block, command output module receive the flow velocity that instruction control adds indigo plant；
When adding that temperature is close to freezing point in blue holding vessel, processor from signal receiving module receive signal after directly to finger
Make output module send heating instructions to heat to adding the indigo plant that adds in blue holding vessel 1.
The course of work of the present invention is as follows：
When system works, control unit 2 receives the blue emitted dose that adds needed for engine, controls the frequency of metering solenoid valve 4
And aperture, it will quantitatively add blue be sent into siphon spray gun 5.Compressed air in compressed air source 3 remains steady after pressure-reducing valve 7
Fixed pressure, and in the exit of siphon spray gun 5 --- it that is to say and form stabilization using the high velocity stream of compressed air at nozzle
Condition of negative pressure, make to add it is blue flowed in blue channel 5.1 is added, recycle the liquid level difference production added between blue holding vessel 1 and siphon spray gun 5
Raw potential energy adds blue flowing so as to promote, and makes to add and blue sprays from adding in blue channel 5.1.Meanwhile the pressure stability after the decompression of pressure-reducing valve 7
Compressed air the indigo plant that adds suctioned out from siphon spray gun 5 is atomized, and spray into the exhaust pipe of engine.
Control unit 2 receives the signal that liquid level sensor 12 and exhaust back pressure sensor are sent, when adding blue liquid level and exhaust
Back pressure is changed, and flow velocity is modified using control unit 2.When filling adds indigo plant, if residual adds indigo plant and impurity or failure be present,
The residue added in blue holding vessel 1 can be discharged by residul discharging port 11, finally add indigo plant from adding blue filler 10 and add.
The signal that control unit 2 is sent according to temperature sensor 9, control the keying of heat exchanger 8；When adding, blue temperature is too low
When, heat exchanger 8 is opened, and is heated with adding the indigo plant that adds in blue holding vessel 1, so as to effectively prevent the crystallization for adding indigo plant.
Control unit 2, when it is zero to add blue flow velocity, controls according to the keying of the Signal-controlled switch magnetic valve 6 of engine
The unlatching of the controlling switch magnetic valve 6 of unit 2, using the compressed air after the decompression of pressure-reducing valve 7 in pipeline and siphon spray gun 5
Remnants add blue purging, effectively prevent the appearance of crystallization；When adding blue spraying system normal work, the controlling switch magnetic of control unit 2
The closing of valve 6, prevent that add indigo plant enters in compressed air line through switch electromagnetic valve.
Claims (7)
1. a kind of hydrocone type adds blue filling apparatus, including add blue holding vessel, control unit, compressed air source, metering solenoid valve and
Siphon spray gun, it is characterised in that：It is described to add blue holding vessel output end blue input is added by metering solenoid valve and siphon spray gun
It is connected, the liquid level for adding blue holding vessel is higher than the liquid level of the siphon spray gun；The compressed air source and the siphon spray gun
Air input be connected, and form negative pressure in the outlet of the siphon spray gun；Described control unit and the metering solenoid valve
It is connected and controls the open frequency and aperture of metering solenoid valve；Add blue channel and compressed air channel in the siphon spray gun are phase
Mutually independent passage；The blue channel that adds runs through described compressed air channel one end to add indigo plant with what metering solenoid valve outlet connected
Input, the other end stretch out the compressed air channel；The compressed air source can be by between metering solenoid valve and siphon spray gun
Pipeline and siphon spray gun in residual add indigo plant and clean up, and maintain stable condition of negative pressure in siphon lance outlet.
2. hydrocone type adds blue filling apparatus according to claim 1, it is characterised in that：The compressed air source is by switching electricity
Magnet valve connects with metering solenoid valve outlet；The keying of described control unit controlling switch magnetic valve.
3. hydrocone type adds blue filling apparatus according to claim 1, it is characterised in that：The compressed air source and the siphon
Pressure-reducing valve is provided between spray gun air input.
4. hydrocone type adds blue filling apparatus according to claim 1, it is characterised in that：Described add is provided with heat inside blue holding vessel
Exchanger and temperature sensor；Described control unit controls the keying of the heat exchanger, and the heat exchanger uses electrical heating
Mode or thermal source use engine cooling water or engine fluid；Temperature signal is transferred to control by the temperature sensor
Unit processed.
5. hydrocone type adds blue filling apparatus according to claim 1, it is characterised in that：The top for adding blue holding vessel is provided with
Add blue filler, the indigo plant storage pot bottom that adds is provided with residul discharging port.
6. blue filling apparatus is added according to the hydrocone type of claim 1 or 5, it is characterised in that：Described add is provided with blue holding vessel
Liquid level signal is transferred to control unit by liquid level sensor, the liquid level sensor.
7. adding blue charging method applied to the hydrocone type that any hydrocone type in claim 1~6 adds blue filling apparatus, it is special
Sign is, including：
1) liquid level for keeping adding in blue holding vessel is higher than the liquid level of siphon spray gun；
2) negative pressure is formed in siphon lance outlet using compressed air, and will added blue from the ejection of siphon lance outlet；
3) by control unit control be arranged on add the metering solenoid valve between blue holding vessel and siphon spray gun open frequency and
Aperture regulation adds the flow velocity of indigo plant；
4) remained in the pipeline and siphon spray gun being exported to using compressed air cleaning metering solenoid valve between siphon lance outlet
Add indigo plant.
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 CN104500183A (en) | 2015-04-08 |
| CN104500183B true 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 plane |
| 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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| CN202157846U (en) * | 2011-06-20 | 2012-03-07 | 杭州银轮科技有限公司 | Air-assisted injection system for diesel engine post-treating urea silicon controlled rectifier (SCR) system |
| CN202578856U (en) * | 2012-03-08 | 2012-12-05 | 湖北天雄科技有限公司 | Adblue tank of SCR (Selective Catalyst Reduction) injection system |
| CN204253145U (en) * | 2014-10-17 | 2015-04-08 | 武汉添蓝科技有限责任公司 | Hydrocone type adds blue filling apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997001387A1 (en) * | 1995-06-28 | 1997-01-16 | Siemens Aktiengesellschaft | Catalytic purification process and device for exhaust gas from a combustion system |
| DE102009005790B4 (en) * | 2009-01-22 | 2023-05-17 | Albonair Gmbh | dosing system |
| CN203257520U (en) * | 2013-05-21 | 2013-10-30 | 中国第一汽车股份有限公司 | Gas-assisted urea injection system adopting gravity metering method |
| CN103790680B (en) * | 2014-02-21 | 2016-08-24 | 武汉添蓝发动机排放控制技术有限公司 | A kind of compressed air-driven add blue loading system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202157846U (en) * | 2011-06-20 | 2012-03-07 | 杭州银轮科技有限公司 | Air-assisted injection system for diesel engine post-treating urea silicon controlled rectifier (SCR) system |
| CN202578856U (en) * | 2012-03-08 | 2012-12-05 | 湖北天雄科技有限公司 | Adblue tank of SCR (Selective Catalyst Reduction) injection system |
| CN204253145U (en) * | 2014-10-17 | 2015-04-08 | 武汉添蓝科技有限责任公司 | Hydrocone type adds blue filling apparatus |
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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: 20150824 Address after: 312 room 7-4, building 430074, pioneer Plaza, East Lake New Technology Development Zone, Wuhan, Hubei, Optics Valley Applicant after: Wuhan Tianlan Motor Control Technology Co., Ltd. Address before: 430074, 4, 6, 07, Fuxing Medicine Park, No. 58, Optics Valley Road, East Lake New Technology Development Zone, Hubei, Wuhan Applicant before: Blue science and technology limited Company is added in Wuhan |
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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. |
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