CN105833807B - A kind of mixing aerosol generating device of simulation diesel engine particulate stream - Google Patents
A kind of mixing aerosol generating device of simulation diesel engine particulate stream Download PDFInfo
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- CN105833807B CN105833807B CN201610317238.6A CN201610317238A CN105833807B CN 105833807 B CN105833807 B CN 105833807B CN 201610317238 A CN201610317238 A CN 201610317238A CN 105833807 B CN105833807 B CN 105833807B
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- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
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Abstract
The invention discloses a kind of mixing aerosol generating device of simulation diesel engine particulate stream, dissolved organic matter generating means is arranged based on carbon black aerosol generating means, and ash content aerosol generating device includes three sections, and mixed solution generates section：Ash content containing cup, distilled water containing cup are connected with mixed solution containing cup, and the outlet of mixed solution blender is sequentially connected with mixed solution filter screen, funnel, filtering solution containing cup, filtering solution blender, blender valve, injector threeway, solution jet.Mixed solution evaporator section：Injector threeway is connected to solution jet, and solution jet is sequentially connected with mixing tube, heating spool, heating spool threeway.Ash content aerosol dilution deposits section：Heating spool threeway is sequentially connected with air filter, the second suspended body flowmeter, one entrance of dilution section threeway.The configuration of the present invention is simple controls mixing aerosol generation concentration by a variety of regulative modes, simulates realistically diesel engine particulate stream.
Description
Technical field
The present invention relates to diesel engine automobile exhaust gas processing device field, more particularly to a kind of simulation diesel engine particulate stream
Mixing aerosol generating device.
Background technology
Diesel engine has the higher thermal efficiency and economy, lower CO2The advantages that discharge, is widely used in transporting
Industry.But its discharge quantity of particulate matter is big (discharge capacity is 30 times~80 times with displacement gasoline engine), and serious dirt can be caused to environment
Dye.Stringent discharge standard requires effective, reliable technology granular material discharged to reduce.From control technology, only
It has been difficult to meet current discharge standard by diesel engine emission controls by improving combustion and improvement fuel qualities.Currently, meeting " state IV " discharge
The diesel engine of regulation all generally needs to use post-processing technology, and the following tightened up emission regulation will put forward post-processing technology
Go out higher requirement.Diesel particulate trap (Diesel Particulate Filter, DPF) is to reduce diesel exhaust gas
The important means of particulate matter, and best one of the technology of commercial application prospect in post-processing technology at present.Wherein, wall-flow type
DPF is due to the structure of its alternating expression, and having high arresting efficiency, (physics traps diesel particle, particle capture efficiency is usually
Higher than 95%) being widely used.
The use of carbon black aerosol simulation diesel engine particulate stream is that a kind of comparison is normal currently, in laboratory research DPF
Way eliminates the consumption of direct fund, personnel and the rack for carrying out diesel engine experiment and bringing.But due to diesel engine
Contain a certain amount of dissolved organic matter and ash content in exhaust particulate stream, dissolved organic matter can be combined with carbon soot particles, and grey
The deposition divided can increase the filtering pressure drop of DPF, purely less using the method for carbon black aerosol simulation diesel engine particulate stream
Rationally, therefore, using dissolved organic matter in diesel oil and lubricating oil mixed liquor simulation diesel engine particulate stream, and business is used
Ash content, which carries out quick ash deposition, in flying dust simulation diesel engine particulate stream seems necessary.In dust aerosol generating device
On, domestic common a few money products are mostly that foreign countries research and develop, universal higher in price, upper 100,000 yuans easily.Wherein, German
PALAS companies RBG series dust aerosol generating device uniformly removes certain powder by using rotary brush to generate
Aerosol, concentration are stablized, and can be effectively used to generation carbon black aerosol, but due to ash particles grain size and cause for quality, directly
It connects and is easily precipitated after forming aerosol with gas using ash content, therefore ash content aerosol is generated using dust aerosol generating device
Method good ash content suspension effect is not achieved.
Invention content
The technical problems to be solved by the invention provide a kind of mixing aerosol generation of simulation diesel engine particulate stream
Device, the present apparatus is of simple structure and low cost, simulate diesel engine particulate stream in carbon soot particles, dissolved organic matter and
The mixing aerosol generating device of ash content is dense come the mixing for controlling carbon soot particles and dissolved organic matter by a variety of regulative modes
Degree, ash content generation concentration obtain mixing aerosol, simulate realistically diesel engine particulate stream.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of mixing aerosol generating device of simulation diesel engine particulate stream, including carbon black aerosol generating means,
Dissolved organic matter generating means, ash content aerosol generating device；
The dissolved organic matter generating means is arranged based on carbon black aerosol generating means comprising fuel injector, spray
Oily device control unit, the injector seals of the fuel injector be installed on the aerosol segment occurred of the carbon black aerosol generating means with
On pipeline between aerosol dilution section；The Sampling Interface of the carbon black aerosol generating means is connected to mixing aerosol threeway
One entrance；The ash content aerosol generating device includes that mixed solution generation section, mixed solution evaporator section and ash content aerosol are dilute
Release deposition section；
Mixed solution generates section：Ash content containing cup is connected to mixed solution containing cup by ash content containing cup valve, distillation
Water containing cup is sequentially connected with pneumatic tube threeway, distilled water containing cup valve, mixed solution containing cup, and the mixed solution is held
Cup is equipped with mixed solution blender, and the mixed solution blender outlet is held with mixed solution filter screen, funnel, filtering solution
Cup, filtering solution blender, blender valve, injector threeway, solution jet are sequentially connected, and are held in the filtering solution
Cup is equipped with filtering solution blender；
Mixed solution evaporator section：Injector threeway outlet is connected to solution jet, the solution jet and mixing tube,
Heating spool, heating spool threeway be sequentially connected, the mixing tube is also connected to heater, also with the first suspended body flowmeter, sky
Air filter, air compressor are sequentially connected, the solution jet be also connected to emitted dose for controlling solution jet,
The microcontroller of injection interval；
Ash content aerosol dilution deposits section：The outlet of heating spool threeway one and air filter, the second float-type
Meter, one entrance of dilution section threeway are sequentially connected, and another outlet of heating spool threeway is connected to the dilution by diluting section valve
Another entrance of Duan Santong, the dilution section threeway outlet are connected to mixing aerosol threeway entrance, the mixing aerosol three
Pass-out mouth is connected to DPF.
Further, it is another by injector wash-out valve to be connected to injector threeway for another outlet of the pneumatic tube threeway
One entrance.
Further, the mixed solution filter screen is made of 304 stainless steel filtering nets of different hole mesh numbers, from top to bottom according to
Secondary is 200 mesh, 300 mesh, 400 mesh, 500 mesh and 600 mesh.
Further, the nozzle of the solution jet is tightly connected with mixing tube.
Further, the fuel injector control unit is held for controlling emitted dose, injection interval and the injection of fuel injector
The continuous time.
Further, described air filter one end connects heating pipeline threeway by Ф 8mm316 stainless-steel pipes, separately
One end is connected by Ф 8mm pneumatic tubes.
Further, described dilution section valve one end connects heating pipeline threeway by Ф 8mm316 stainless-steel pipes, separately
One end connects dilution section threeway by Ф 8mm316 stainless-steel pipes.
Further, the ash content aerosol dilution deposition section is additionally provided with heating and heat-insulating device.
Further, the air filter uses three-level air filter, and the first order is using FC grades of centrifugal greases point
From device, the second level is using FT grades of supervisor's pipe filters, and the third level is using the micro- oil mist filters of FA.
Further, all accesses are all made of Ф 8mm pipes and are attached, Ф 8mm pipes include pneumatic tube and 316 not
Become rusty steel steel pipe.
Compared with prior art, the beneficial effects of the invention are as follows：1) simple and reliable for structure, design is unique, can transport for a long time
Row.It can be built using common instrument, equipment；2) the mixing aerosol of stable quantity can be continuously provided.It is controlled using fuel injector
Unit controls dissolved organic matter generating means fuel injector mixed liquor spray volume, injection interval and injection duration；It utilizes
Automatically controlled control ash content distills water mixed solution high-pressure injector spray volume, and ash content sendout having the same can guarantee stable
Ash levels and for a long time continuous offer；3) mixing aerosol concentration range is wide.It is soluble based on carbon black aerosol generating means
Organic matter generating means can provide different compound percentages, and the wide first mixing aerosol of concentration range, simulation diesel engine is not
With dissolved organic matter amount in the exhaust particulate stream under operating mode, various ways are mutually coordinated；It, can be in the case where not changing structure situation
By adjusting amount of distilled water, ash content distills water mixed solution high-pressure injector spray volume, injection interval, air capacity and gas point
Diluted stream changes ash content in the concentration of outlet end than these modes, simulates in exhaust particulate stream of the diesel engine under different operating modes
Ash amount, various ways are mutually coordinated；4) mixed solution generate section can single enough mixed solution be provided realize that solution is fixed dense
Degree, also sustainability offer mixed solution realization solution Variable Composition, can simulate diesel engine and be arranged in the case where determining operating mode or variable working condition in this way
Ash content in aerated particle stream；5) ash content aerosol dilution deposition section uses common Partial flow dilution principle, parallel based on one
The high-efficiency filtration systems of ash content aerosol flow resistance and bypass, thinner ratio are that by flow, (total flow subtracts total flow with ball valve
The aerosol dilution that deashes deposits section filtration fraction flow) ratio；6) apparatus of the present invention have good economic, energy saving, ring
Protect effect.Using diesel oil and lubricating oil mixed liquor Spray Simulation dissolved organic matter, and based on carbon black aerosol generating means with
Carbon black aerosol is combined to form first mixing aerosol, and simulating ash content in diesel engine particulate stream using business flying dust carries out
Ash content aerosol occurs, and is conducive to saving fund and time, and whole system power consumption is low, in the mixing of filtering ash content and distilled water
When solution, the recyclable extra ash content cycling and reutilization of filter screen not will produce emission of substance, at the same filter screen it is detachable,
It recycles, air filtering and ash content aerosol is crossed using three-stage filtration mode, to finally empty；7) apparatus of the present invention operate
Simply, application is strong, since its ash content aerosol concentration range is wide, in addition to that can be used to simulate in diesel engine particles stream other than ash content,
Also filtration system performance test, the Atmospheric particulates research etc. of other field such as chemical industry can be applied.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the mixing aerosol generating device of simulation diesel engine particulate stream of the present invention.
In figure：Carbon black aerosol generating means I, dissolved organic matter generating means II and ash content aerosol generating device
III, dissolved organic matter generating means II is arranged I based on carbon black aerosol generating means comprising fuel injector 1, fuel injector control
Unit 2 processed；And ash content aerosol generating device includes mixed solution generation section III -1, mixed solution evaporator section III -2 and ash content gas
Colloidal sol dilution deposition section III -3.Wherein, mixed solution generation section III -1 includes：Ash content containing cup 3, distilled water containing cup 4, ash content
Containing cup valve 5, distilled water containing cup valve 7, mixed solution containing cup 8, mixed solution blender 9, mixes pneumatic tube threeway 6
Close solution filter screen 10, funnel 11, filtering solution containing cup 12, filtering solution blender 13, blender valve 14；Mixed solution
Evaporator section III -2 includes：Microcontroller 15, injector threeway 16, solution jet 17, injector wash-out valve 18, mixing tube 19,
Heater 20, heating spool 21, heating spool threeway 22, air compressor 23, air filter 24, the first suspended body flowmeter
25；Ash content aerosol dilution deposits section III -3：Air filter 26, dilution section valve 28, adds second suspended body flowmeter 27
Hot attemperator 29, dilution section threeway 30, mixing aerosol threeway 31.
Specific implementation mode
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.As shown in Figure 1, of the invention
The mixing aerosol generating device of the simulation diesel engine particulate stream of offer, the flow direction of entire access is：Solubility has
II fuel injector 1 of machine object generating means generates diesel oil and is combined to form first mixing with carbon black aerosol with the spraying of lubricating oil mixed liquor
Aerosol, and it is based on carbon black aerosol generating means I (such as device described in Chinese patent CN201410289789.7) pipeline,
Reach Sampling Interface；Ash content containing cup 3 connects ash content containing cup valve 5, and distilled water containing cup 4 divides after connecting pneumatic tube threeway 6
Not Lian Jie distilled water containing cup valve 7 and injector wash-out valve 18, ash content containing cup valve 5,7 profit of distilled water containing cup valve
It is passed through mixed solution containing cup 8 with pneumatic tube, mixed solution blender 9 is in mixed solution containing cup 8, mixed solution containing cup
Mixed solution filter screen 10 is accessed in 8 lower ends, and filtering solution flows through funnel 11 by mixed solution filter screen 10 and entrance filtering is molten
Liquid containing cup 12, for filtering solution blender 13 in filtering solution containing cup 12, filtering solution blender 13 connects blender valve
Door 14, injector threeway 16 is separately connected blender valve 14, injector wash-out valve 18 and solution jet 17, with microcontroller
The nozzle of the solution jet 17 of 15 connection transmission signals is tightly connected with mixing tube 19, and air passes through air compressor 23, sky
Air filter 24, the first suspended body flowmeter 25 enter mixing tube 19, and connection heating spool 21 in the outlet of mixing tube 19 heats spool 21
22 1 tunnel of heating spool threeway connection air filter 26, the second suspended body flowmeter 27 of outlet, all the way connection dilute section valve
28, the second suspended body flowmeter 27 and dilution section valve 28 connect dilution section threeway 30 later, finally dilute section threeway 30 and cross pipeline
It is connected to I Sampling Interface of carbon black aerosol generating means and mixes aerosol threeway 31, mixing aerosol threeway 31 exports connection
To DPF.
Before experiment starts, injector wash-out valve 18 is closed, opens ash content containing cup valve 5, distilled water containing cup valve
7, blender valve 14 and dilution section valve 28.Opening heater 20, heating spool 21 and heating and heat-insulating device 29 carry out pre-
Heat, and air is opened by air compressor 23, the first suspended body flowmeter 25 by a small amount of flow, prevent dry combustion method.It is molten when mixing
After liquid containing cup 8, filtering solution containing cup 12 have a certain amount of solution, heater 20, heating spool 21 and heating and thermal insulation dress
It sets 29 and basically reaches set temperature, open mixed solution blender 9,13 preparing experiment of filtering solution blender.When experiment starts,
Carbon black aerosol generating means I, fuel injector 1 and fuel injector control unit 2 are opened, solution jet 17, second is opened simultaneously
Suspended body flowmeter 27.After completing experiment, carbon black aerosol generating means I, fuel injector 1 and fuel injector control unit 2 are closed, together
When close ash content containing cup valve 5, distilled water containing cup valve 7, blender valve 14, open injector wash-out valve 18, clearly
After washing one minute, injector wash-out valve 18, solution jet 17, heater 20, heating spool 21 and heating and thermal insulation are closed
Device 29 closes air compressor 23, the first suspended body flowmeter 25, the second suspended body flowmeter when temperature is down to 50 DEG C or so
27 and dilution section valve 28.Aforesaid operations process more truly simulates the environment residing for diesel particulate, and can
By subsequent accumulation, correlation function is developed by microcontroller 15.
The injector seals of fuel injector 1 are installed on I pipeline of carbon black aerosol generating means, and fuel injector control unit 2 is simultaneously
It is installed on it；Mixed solution generates all parts foundation ash content, distilled water and the solution of section III -1 because gravity can be downward
The characteristics of flowing, is sequentially connected from top to down.Ash content containing cup 3 is placed on the generation of ash content aerosol side by side with distilled water containing cup 4
Device experiment frame top.Ash content containing cup 3 and the 4 cup body trepanning of distilled water containing cup respectively with ash content containing cup valve 5, distilled water
Containing cup valve 7,8 cup lid holes of mixed solution containing cup are coaxial.Mixed solution containing cup 8, mixed solution filter screen 10, funnel
11, filtering solution containing cup 12 and blender valve 14 should central coaxials.Injector wash-out valve 18 connects pneumatic tube three
Logical 6, it is placed side by side with blender valve 14, and right over injector threeway 16, and solution jet 17 is then in injection
Immediately below device threeway 16.Microcontroller 15 is fixed on using instrument case on ash content aerosol generating device experiment frame, and with it is molten
Fluid injector 17 is adjacent.Mixing tube 19 is equally adjacent with solution jet 17, and 19 lower section of mixing tube is heater 20, convenient for adding
Heat, at this point, heater 20 is in the least significant end of ash content aerosol generating device experiment frame, air filter 24, the first float stream
25 adjacent connection of gauge is placed on the middle part of ash content aerosol generating device experiment frame, and the first suspended body flowmeter 25 is by pneumatic
Pipe connects mixing tube 19, and forms upward air-flow, and heating spool 21 connects mixing tube 19 and according to airflow direction, connects up
Heat spool threeway 22.Air filter 26 and air compressor 23, the second suspended body flowmeter 27 and the first suspended body flowmeter 25
In sustained height, opposite installation connects up dilution section valve later for making ash content aerosol generating device experiment frame balance
Door 28, heating and heat-insulating device 29 and dilution section threeway 30, it is molten with carbon black gas that mixing aerosol threeway 31 connects dilution section threeway 30
I Sampling Interface of glue generating means.
Further, ash content containing cup 3 has cup body and cup lid, the trepanning of cup body lower part to be simultaneously fixedly connected with Ф 8mm pneumatic tubes, cup
Lid is provided with Ф 1mm apertures, it is therefore an objective to connect air, while prevent the ash content in cup from raising out.Distilled water containing cup 4 also includes cup body
With cup lid, need to use the difference is that cup body further includes range (present apparatus chooses 500mL) and lower part Ф 8mm pneumatic tubes
Pneumatic tube threeway 6 is separately connected distilled water containing cup valve 7 and injector wash-out valve 18, and cup lid opens that there are one Ф 1mm are small
Hole, it is therefore an objective to connect air, while prevent the too fast volatilization of the distilled water in cup.The reason of for using distilled water is to ensure solution
Without other impurities ingredient.Ash content containing cup valve 5, distilled water containing cup valve 7 are respectively ash content containing cup 3, pneumatic tube threeway 6
The valve connected between mixed solution containing cup 8 can be in mixed solution containing cup by controlled valve or controlling opening of valve
The mixed solution of steady concentration or Variable Composition is obtained in 8.
Mixed solution containing cup 8 also includes cup body and cup lid, and cup body lower part is opened there are one mixed solution tap hole and fixation
Ф 8mm pneumatic tubes are connected, cup lid is driveed there are two hole, and ash content containing cup valve 5, distilled water containing cup valve 7 are separately connected, and
It is coaxial with the 3 cup body trepanning of ash content containing cup, the 4 cup body trepanning of distilled water containing cup.Mixed solution blender 9 is placed in mixed solution Sheng
It puts in cup 8, for entering the ash content and distilled water of mixed solution containing cup 8, since ash particles are heavier, meeting rapid subsidence is being steamed
Distilled water bottom can be such that ash content is sufficiently mixed with distilled water by mixed solution blender 9.Mixed solution filter screen 10 uses
304 stainless steel filtering nets of different hole mesh numbers form, and are followed successively by 200 mesh, 300 mesh, 400 mesh, 500 mesh and 600 mesh from top to bottom.
By multistorey strainer mesh, bulky grain ash content and the insoluble ash in mixed solution can be filtered out so that filtering solution is uniform.More
After secondary filtering, it can dismantle, clean strainer, reach and recycle.Many experiments find that ash content is filtered through rate on 30% left side
It is right.
Filtering solution containing cup 12 also includes cup body and cup lid, be by the connection of funnel 11 and cup lid by filtering solution into
Row is collected, and funnel 11 and cup lid are coaxial, and the trepanning of cup body lower part is simultaneously fixedly connected with Ф 8mm pneumatic tubes for connecting blender valve
14.Filtering solution blender 13 is placed in filtering solution containing cup 12, if for the filtering solution in filtering solution containing cup 12
It does not use for a long time, grey branch rests on bottom of a cup, with distillation water stratification, can make ash content again by filtering solution blender 13
It is sufficiently mixed with distilled water.Blender valve 14 is opened when package unit needs operating, is prevented at filtering solution long-time
In solution jet 17,17 spray orifice of solution jet is blocked.Fuel injector control unit 2, microcontroller 15 are the list voluntarily encoded
Piece machine is respectively used to control fuel injector 1, the emitted dose of solution jet 17, injection interval and injection duration.
Injector threeway 16 connects two solution inlet ports, and one connects blender valve 14, and one connects injector wash-out valve 18,
Purpose is closed after blender valve 14, using distilled water cleaning solution injector 17, prevents from blocking the spray of solution jet 17
Hole, outlet connect solution jet 17.The injector seals of fuel injector 1 be installed on carbon black aerosol generating means aerosol segment occurred with
On pipeline between aerosol dilution section, nozzle and the mixing tube 19 of solution jet 17 are tightly connected, and what is used is purchase
Existing product.Mixing tube 19 1 is connect with the injector seals of solution jet 17, and trepanning nearby and is fixedly connected
Ф 8mm316 stainless-steel pipes, other end connection heating spool 21.Heater 20 is for keeping temperature in mixing tube to be not less than 100
℃.Heating spool 21 keeps temperature in pipe to be not less than 100 DEG C, heater 20 with heat that the junction of spool 21 is same ensures temperature
Degree is not less than 100 DEG C, and connecting ash content aerosol dilution using heating spool threeway 22 in the tail end needs of heating spool 21 deposits
Section III -3.
Air compressor 23, air filter 24 and the first suspended body flowmeter 25 are for providing compressed air.First
It is the moisture and impurity in filtering compressed air to install 24 purpose of air filter before suspended body flowmeter 25 additional.Air filter 26 1
By Ф 8mm316 stainless-steel pipes connection heating spool threeway 22, one end is connected by Ф 8mm pneumatic tubes at end.Due to herein not
100 DEG C of heating and thermal insulation, moisture therein, grey branch are filtered by air filter 26.Second suspended body flowmeter 27 is for controlling
Dilution, outlet end connection dilution section threeway 30.Ash content aerosol dilution deposition section III -3 uses common Partial flow dilution principle,
Based on the high-efficiency filtration systems of parallel an ash content aerosol flow resistance and bypass, thinner ratio is that total flow passes through with ball valve
The ratio of flow (total flow subtracts III -3 filtration fraction flow of ash content aerosol dilution deposition section).It is logical to dilute 28 one end of section valve
Ф 8mm316 stainless-steel pipes connection heating spool threeway 22 is crossed, one end connects dilution section three by Ф 8mm316 stainless-steel pipes
Logical 30.It is kept the temperature from spool threeway 22 is heated using heating and heat-insulating device 29 to dilution section valve 28, then to dilution section threeway 30.
31 outlet of mixing aerosol threeway is connected to DPF.Ash content aerosol is when passing through DPF, since temperature is higher than 100
DEG C, ash-deposition is on DPF at this time, and moisture is condensed by DPF in subsequent pipeline.Since DPF is in Diesel Engine Exhaust Pipe
Residing temperature is often higher than 200 DEG C, therefore meets situation here with 100 DEG C of filtering moisture.Certainly, by adjusting heater
20, spool 21, heating and heat-insulating device 29 are heated, also can reach 200 DEG C of even higher temperature, but not energy-efficient.Air filter 26
Using three-level air filter, the first order uses the solid ionic of FC grades of centrifugal oil-water separators, complete filter 23 μ or bigger,
Upstream gas moisture load allow to reach 25000ppm remove 99% moisture, 40% mist of oil；The second level uses FT grades of main lines
Filter 1 μ of filtering completely or the solid ionic of bigger, upstream gas moisture load allow to reach 2000ppm 100% water of removal
Point, 70% mist of oil；The third level can filter using the micro- oil mist filters of FA, the specially designed density of glass fibre
The solid particles of 0.01 μ, 99.9999% mist of oil.
Parts are in addition to air compressor 23 all mounted on ash content aerosol generating device experiment frame.Ash content gas is molten
Glue generating means experiment frame is equipped with movable castor, easy to remove.23 flow control of air compressor is in 50~300L/min.Institute
Some accesses are all made of Ф 8mm pipes and are attached, including pneumatic tube and 316 stainless-steel pipes.Heater 20, heating spool 21,
The control instrument of heating and heat-insulating device 29 is placed on ash content aerosol generating device experiment frame.
The present invention adds dissolved organic matter generating means on the basis of carbon black aerosol generating means, and molten with ash content gas
Glue generating means is combined, and a mixing aerosol generating device is obtained.Dissolved organic matter generating means passes through oil spout
Device generates diesel oil and sprays with lubricating oil mixed liquor, and is combined to be formed just with carbon black aerosol based on carbon black aerosol generating means
Secondary mixing aerosol is adjusted melting concn by controlling mixed liquor spraying frequency, and utilizes carbon black aerosol generating means
Dilution carries out multimode combination, a wide range of adjusting；Using strainer filtering bulky grain ash content, ash content aerosol is re-formed later, is led to
It crosses and is occurred using solution vaporation-type ash content, solution dilution, controls the dilution of solution emitted dose, the dilution of control air capacity and gas point
Diluted stream carries out multimode combination, a wide range of adjusting, while recycling extra ash content using strainer and being recycled；By what is obtained
Ash content aerosol mixes aerosol and is mixed to get mixing aerosol with first.
Claims (9)
1. a kind of mixing aerosol generating device of simulation diesel engine particulate stream, which is characterized in that including carbon black aerosol
Generating means, dissolved organic matter generating means, ash content aerosol generating device；
The dissolved organic matter generating means is arranged based on carbon black aerosol generating means comprising fuel injector (1), oil spout
The injector seals of device control unit (2), the fuel injector (1) are installed on the aerosol generation of the carbon black aerosol generating means
On pipeline between section and aerosol dilution section；The Sampling Interface of the carbon black aerosol generating means is connected to mixing aerosol
(31) one entrance of threeway；The ash content aerosol generating device includes that mixed solution generates section, mixed solution evaporator section and ash content
Aerosol dilution deposits section；
Mixed solution generates section：Ash content containing cup (3) is connected to mixed solution containing cup (8) by ash content containing cup valve (5),
Distilled water containing cup (4) is sequentially connected with pneumatic tube threeway (6), distilled water containing cup valve (7), mixed solution containing cup (8),
The mixed solution containing cup (8) is equipped with mixed solution blender (9), the mixed solution blender (9) outlet with mix it is molten
Liquid filter screen (10), funnel (11), filtering solution containing cup (12), filtering solution blender (13), blender valve (14), spray
Emitter threeway (16), solution jet (17) are sequentially connected, and are stirred equipped with filtering solution on the filtering solution containing cup (12)
Mix device (13)；
Mixed solution evaporator section：Injector threeway (16) outlet is connected to solution jet (17), the solution jet (17)
It is sequentially connected with mixing tube (19), heating spool (21), heating spool threeway (22), the mixing tube (19) is also connected to heating
Device (20) is also sequentially connected with the first suspended body flowmeter (25), air filter (24), air compressor (23), the solution
Injector (17) be also connected to emitted dose for controlling solution jet (17), injection interval microcontroller (15)；
Ash content aerosol dilution deposits section：The outlet of heating spool threeway (22) one and air filter (26), the second float
Flowmeter (27), (30) one entrance of dilution section threeway are sequentially connected, and another outlet of heating spool threeway (22) is by diluting section valve
Door (28) is connected to described another entrance of dilution section threeway (30), and it is molten that dilution section threeway (30) outlet is connected to gaseous mixture
Glue threeway (31) entrance, mixing aerosol threeway (31) outlet are connected to DPF.
2. a kind of mixing aerosol generating device of simulation diesel engine particulate stream as described in claim 1, feature exist
It is another that injector threeway (16) is connected to by injector wash-out valve (18) in another outlet of, the pneumatic tube threeway (6)
A entrance.
3. a kind of mixing aerosol generating device of simulation diesel engine particulate stream as described in claim 1, feature exist
In, the mixed solution filter screen (10) is made of 304 stainless steel filtering nets of different hole mesh numbers, be followed successively by from top to bottom 200 mesh,
300 mesh, 400 mesh, 500 mesh and 600 mesh.
4. a kind of mixing aerosol generating device of simulation diesel engine particulate stream as described in claim 1, feature exist
In nozzle and the mixing tube (19) of the solution jet (17) are tightly connected.
5. a kind of mixing aerosol generating device of simulation diesel engine particulate stream as described in claim 1, feature exist
In the fuel injector control unit (2) is used to control emitted dose, injection interval and the injection duration of fuel injector (1).
6. a kind of mixing aerosol generating device of simulation diesel engine particulate stream as described in claim 1, feature exist
In described air filter (26) one end connects heating pipeline threeway (22) by Ф 8mm316 stainless-steel pipes, and the other end is logical
Cross the connection of Ф 8mm pneumatic tubes.
7. a kind of mixing aerosol generating device of simulation diesel engine particulate stream as described in claim 1, feature exist
In the dilution section valve (28) one end connects heating pipeline threeway (22) by Ф 8mm316 stainless-steel pipes, and the other end is logical
Cross Ф 8mm316 stainless-steel pipes connection dilution section threeway (30).
8. a kind of mixing aerosol generating device of simulation diesel engine particulate stream as described in claim 1, feature exist
In the ash content aerosol dilution deposition section is additionally provided with heating and heat-insulating device (29).
9. a kind of mixing aerosol generating device of simulation diesel engine particulate stream as described in claim 1, feature exist
In the air filter (26) uses three-level air filter, the first order to use FC grades of centrifugal oil-water separators, the second level
Using FT grades of supervisor's pipe filters, the third level is using the micro- oil mist filters of FA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610317238.6A CN105833807B (en) | 2016-05-13 | 2016-05-13 | A kind of mixing aerosol generating device of simulation diesel engine particulate stream |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610317238.6A CN105833807B (en) | 2016-05-13 | 2016-05-13 | A kind of mixing aerosol generating device of simulation diesel engine particulate stream |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105833807A CN105833807A (en) | 2016-08-10 |
| CN105833807B true CN105833807B (en) | 2018-07-20 |
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| CN201610317238.6A Active CN105833807B (en) | 2016-05-13 | 2016-05-13 | A kind of mixing aerosol generating device of simulation diesel engine particulate stream |
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| CN110102228A (en) * | 2019-04-30 | 2019-08-09 | 清华大学 | For reducing the I. C. engine exhaust particle stream evolution process simulator of motor vehicle emission |
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