CN106512872B - A kind of long-term fluidisation type aerosol generating device with self-dispersing function - Google Patents
A kind of long-term fluidisation type aerosol generating device with self-dispersing function Download PDFInfo
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- CN106512872B CN106512872B CN201611105964.8A CN201611105964A CN106512872B CN 106512872 B CN106512872 B CN 106512872B CN 201611105964 A CN201611105964 A CN 201611105964A CN 106512872 B CN106512872 B CN 106512872B
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Abstract
The present invention provides a kind of long-term fluidisation type aerosol generating device with self-dispersing function, by air-flow supply portion, pneumatic conveying drying part, powder boiling fluidisation part, powder self-dispersing part and powder on-line continuous supply portion composition, due to the unique design of pneumatic conveying drying section and boiling fluidized plate, fluidized state is under the action of so that powder is bubbled air-flow at fluidized plate；In self-dispersing section, part agglomerated powders are further dispersed under the action of high-speed flow, efficiently solve the problems such as the poly- and agglomerating of cohesive powders, vibration agglomeration and water suction deliquesce, particle unevenness existing for the supply in the process of aerosol powder and appearance the problems such as powder is discontinuous out are effectively prevented, ensure that the uniformly continuous supply of aerosol powder.
Description
Technical field
The present invention relates to a kind of solid powder aerosol generating devices more particularly to a kind of with the long-term of self-dispersing function
Fluidisation type aerosol generating device.
Background technique
When major accident occurs for reactor, the reactor core fusant of high temperature can be by pressure vessel burn through, so that being included in
A large amount of radioaerosols of heap in-core escape pressure vessel, enter in containment.Containment, which is used as, prevents radioactive product
It is discharged into last one of barrier of environment, its integrality becomes particularly important.At the same time, the reactor core of melting falls on containment
On bottom plate, is reacted with the concrete of bottom plate and generate a large amount of incoagulable gas.With the continuous accumulation of incoagulable gas, containment
Interior pressure gradually rises, and may finally reach the pressure-bearing limitation of containment and containment is caused to destroy, cause radioactivity gas molten
Glue leaks.For the generation for preventing such accident, nuclear power station is generally used containment filtration exhaust system at present, by actively unloading
The mode of pressure makes the pressure in containment be no more than its carrying limit value, so that it is guaranteed that containment integrity；Meanwhile by being mounted on
Filter device on release pipeline effectively filters the radioaerosol in discharge gas, prevents radioaerosol dirty
Environment is contaminated, therefore carry out containment filtration exhaust system to seem of crucial importance to the confirmatory experiment of aerosol filtration efficiency.
The operating pressure of containment filtration exhaust system is 0.73MPa, and can continuous 36 hours to being discharged in containment
Radioaerosol effectively filtered.The aerosol generated in accident process is in containment mainly in the form of solid powder
In the presence of so needing a kind of solid powder aerosol to occur to be filtered performance test to containment filtration exhaust system
Device can be sustainedly and stably incorporated into containment filtration exhaust system (operating pressure 0.73MPa) big with containment
The characteristic, concentration of aerosol and the comparable aerosol of granular size in gas, and require the solid powder aerosol generating device energy
Aerosol is dispensed to circuit incessantly within enough continuous 36 hours.Common solid powder aerosol generating device domestic at present is state
A few money shaped articles of outer research and development, the TSI3400A type gas including German BEG1000, RBG series aerosol generator and the U.S.
Colloidal sol generator etc..They are mainly based on chain nozzle-type, rotary brush and fluidized bed type.The country is molten about solid powder gas
The development of glue generating device is not yet mature, a kind of only some patents " solid particle aerosol producer "
(200520114532.4), " rotating disk type dust aerosol generating device " (201010136283.4), " toothed belt type aerosol
Generating device " (201120050150.5), " dust aerosol generating device " (CN201010101408.X) and a kind of " dust gas
Colloidal sol generating device " solid particle aerosol producer is mentioned in (201310685850.5).But in existing product and patent
The solid powder aerosol generating device being previously mentioned is dispersed using mechanical moving elements such as conveyer belt, chain and rotating brushes
With carry aerosol solid powder, and powder absorption-dispenser entry position is passed to, at the device portal
Swabbing action makes aerosol powder enter absorption-dispenser by entrance, is then exported aerosol being distributed to required system
System.The system pressure that the device can dispense depends on powder absorption-dispenser exit pressure, in order to high-pressure system
Interior dispatching aerosol, it is necessary to improve powder absorption-dispenser exit pressure.But currently used powder absorbs-matches
Sending device is mainly that jet pipe, diffusion tip or other some depression generators, the structure and principle of these devices determine it
Normal absorption can not be carried out to the aerosol solid powder that mechanical moving element carries under high outlet pressure condition, therefore existing
Solid powder aerosol generating device outlet pressure it is lower (maximum outlet pressure be no more than 0.3MPa), it is impossible to be used in high pressure system
The aerosol of system dispenses.Thus it is unsatisfactory for the requirement of experiment of aerosol filtration efficiency verification in containment filtration exhaust system.Specially
Pneumatic transporting is combined using vibration in sharp " a kind of bitubular multi-stage fluidized circular form aerosol generating device " (201210118392.2)
The mode sent improves original aerosol dispersion method, realizes the purpose continuously dispensed under hyperbaric environment.But by institute
The aerosol particle that need to be dispensed is cohesive powders, poor fluidity, and be easy to produce coalescence, therefore the aerosol in the patent occurs
Device still will appear following point: 1, the influence by carrier gas humidity, and aerosol particle is easy water suction and deliquesces, poly- and agglomerating, shadow
Ring the fluidization characteristic of aerosol；2, it in tedge cohesion and pockets of aerosol can not be further discrete, is directly dispensed into
In pilot system, the unstability of aerosol dispatching concentration is caused.3, due to being chronically in high-frequency vibration, the gas in ring cavity is molten
Glue, which will appear, coalesces agglomerating or even tightly packed phenomenon, so that occurring annular space blocking and powder supply in the lesser situation of annular space
Difficult problem, to can not ensure that stablizing for aerosol dispenses under low concentration.Therefore, occurred using existing aerosol
Device is difficult to ensure the requirement that sticky aerosol is continuously and stably dispensed into hyperbaric environment, to not can guarantee containment filtration
The accuracy of exhaust system strainability test.To solve this deficiency, present invention contemplates that cooperating critical flow using bubbling fluidization
Discrete method provides a kind of long-term fluidisation type aerosol generating device with self-dispersing function.
Summary of the invention
It is accurate to control aerosol dispatching concentration and mention the purpose of the invention is to have the function of self-dispersing to cohesive powders
For a kind of long-term fluidisation type aerosol generating device with self-dispersing function, high pressure on-line continuous powder supply function can be realized,
Guarantee that the aerosol generating device chronically accurately dispenses certain density aerosol into high-pressure system, can be applied to nuclear energy,
Aerosol migration, dispersal behavior research and the filtration system performance test in the fields such as environmental protection and chemical industry, can also be applied to pacify
The aerosol deposition characteristic research of heat exchanger surface in full shell.
The object of the present invention is achieved like this: including air-flow supply portion, pneumatic conveying drying part, powder boiling fluidisation portion
Divide, powder self-dispersing part and powder on-line continuous supply portion, the pneumatic conveying drying part include being arranged on the base
In the intracorporal desiccant of drying cylinder, the powder boiling fluidisation part includes connecting with dry cylinder upper end for dry cylinder, setting
Bubbling cylinder, the probe-type hygrometer being bubbled on cylinder, the boiling fluidisation cylinder connected with cylinder upper end is bubbled are set,
Dry cylinder and the junction for being bubbled cylinder are provided with uniform flow orifice, are arranged in the junction for being bubbled cylinder and boiling fluidisation cylinder
There is fluidized plate, powder self-dispersing part includes the dispersion being arranged on boiling fluidisation cylinder upper end outlet by clamping flange
Orifice plate, the powder on-line continuous supply portion include the high gradient changeover portion communicated with boiling fluidisation cylinder, are arranged in Gao Po
Spend changeover portion end porous gas averaging board, be vertically arranged on high gradient changeover portion loader, be arranged on loader into
Hopper, the magazine being arranged in above feed hopper are provided with valve in magazine, are respectively set in loader and feed hopper
There is a blanking valve, loader is communicated by equilibrium air pressure valve with boiling fluidisation cylinder, and loader also passes through drain tap and big
Gas phase is logical, the air-flow supply portion include by the sequentially connected compressor of pipeline, air accumulator, pneumatic filter and cooling driers,
Cooling driers are connect with main air pipe and tonifying Qi pipeline respectively by valve body, and No.1 pressure reducing valve, one are disposed on tonifying Qi pipeline
Number shut-off valve, No.1 flowmeter and tonifying Qi valve, tonifying Qi valve are connected to the end of high gradient changeover portion, on main air pipe successively
No. two pressure reducing valves, No. two shut-off valves, No. two flowmeters, flow control valves, and the end of main air pipe and dry cylinder are set
Lower end connection.
The invention also includes structure features some in this way:
1. being provided with ground joint on the bubbling cylinder, boiling fluidisation cylinder and dry cylinder.
2. the angle of repose that high gradient feed changeover portion and horizontal direction angle are greater than powder sample.
The identical aperture of diameter is equipped with 3. uniformly setting up separately on the porous gas averaging board；Uniform flow orifice aperture is less than desiccant most
Small particle diameters.
Compared with prior art, the beneficial effects of the present invention are: 1. by using equal spiracular plate and ciculation fluidized plate string
It is coupled structure, keeps distribution of air flow uniform, and entered in boiling fluidisation cylinder from below in a manner of bubbling, makes the dust in generator
In boiling fluidized state under the action of being uniformly bubbled air-flow.2. aerosol generator exit uses self-dispersing orifice plate, make
Air-flow accelerates in orifice plate, is further broken up the aerosol particle of agglomerate using high-speed flow, improves the equal of aerosol supply
Even property.3. realizing high pressure on-line continuous using pressure balance technology adds powder, the long-play of aerosol generator ensure that.
4. utilizing the moisture in the gas dry pipe removal compressed air of generator front end, it is therefore prevented that fluidized plate blocking, to reduce gas molten
Cementing piece.5. each cylinder section is equipped with grounding ports, electrostatic can be exported in time to prevent aerosol particle from assembling.6. being bubbled cylinder
Probe-type hygrometer is installed, the humidity of fluidized plate gas can be entered with real-time measurement, judges whether that desiccant should be replaced in time
To meet the requirement to gas humidity.7. the gas come out from air compressor successively passes through pneumatic filter and cooling driers, prevent
Only impurity blocking homogenizing plate and fluidized plate and the pollution to aerosol sample in air.8. being set at the top of main cylinder using streamlined
Meter prevents air-flow stagnant area, improves whole aerosol luminous efficiency and stability.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of generating device of the invention.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.
In conjunction with Fig. 1~2, the present invention provides a kind of long-term fluidisation type aerosol generating device with self-dispersing function.It should
Aerosol generating device is by air-flow supply portion, pneumatic conveying drying part, powder boiling fluidisation part, powder self-dispersing part and powder
Last on-line continuous supply portion is formed.
The air-flow supply portion mainly by compressor 1, air accumulator 2, gas filtration 3, cooling driers 4, pressure reducing valve 7 and 33,
Shut-off valve 8 and 32, flowmeter 9 and 31, flow control valve 10, tonifying Qi pipeline 34, tonifying Qi valve 30 form, for aerosol generation
The stabilization gas source of device offer certain pressure and flow.
The pneumatic conveying drying part is by drying cylinder 13, desiccant 36, uniform flow orifice 38, mounting flange 14 and connection method
Orchid 15 forms, and desiccant 13 is filled in drying cylinder body, and uniform flow orifice is mounted on the boss in dry cylinder lateral wall face, drying cylinder
Body is connect with bubbling cylinder by flange seal.Mainly place is dried to the air-flow for entering bubbling fluidization cylinder 16 in the part
Reason prevents sticky aerosol powder water suction from deliquescing, and occurs agglomerating hardened problem, while the part can be to gas flow point
With processing is homogenized, to enhance the uniformity for being bubbled boiling at fluidized plate 41.The mounting flange 14 of dry 13 lower part of cylinder with
Pedestal 35 is bolted, and plays fixed effect.
The powder boiling fluidisation part is by bubbling cylinder 16, fluidized plate 41, boiling fluidisation cylinder 18 and connecting flange
17 compositions.Air-flow uniformly enters boiling fluidisation cylinder fluidized plate 41 in a manner of bubbling in the part, so as to more evenly
Rising be deposited on the aerosol of 18 lower part of cylinder, make aerosol powder end in boiling fluidized state, and carry to it；And
The fluidized plate is the material of even compact, provides guarantee for the boiling fluidisation of powder.
The powder self-dispersing part is made of self-dispersing orifice plate 43, clamping flange 19, fixed by clamping flange 19
Disperse orifice plate 43, and is mounted on the outlet port of aerosol generator.The gas for carrying aerosol adds by self-dispersing orifice plate
Speed, high-speed flow can generate percussion to aerosol, so that the block-like aerosol group of ball be broken up；
The powder on-line continuous supply portion is mainly by magazine 20, valve 21, feed hopper 22, loader 26, flat
Weigh air pressure valve 25,24, two blanking valves 23 and 27 of drain tap, high gradient changeover portion 29, the composition of porous gas averaging board 28, real
The function of on-line continuous powder supply under existing high pressure.Magazine is located above feed hopper, and feed hopper is connected to loader, and loader connects
Lead to high gradient feed changeover portion, the first blanking valve is installed between feed hopper and loader, loader and the high gradient are fed transition
The second blanking valve is installed between section, two root canals are installed on loader, drain tap and equilibrium air pressure are installed respectively in two root canals
Valve, high gradient feed changeover portion are connected to boiling fluidisation cylinder.The mounting flange of aerosol generator entirety is connected by bolt
It connects on the base.And gas circuit where the equilibrium air pressure valve is connected to main cylinder top.
Two blanking valves 23 and 27, can make loader 26 respectively with external environment, aerosol generating device
Main body isolation, is used alternatingly, so that normal in aerosol generating device in combination with equilibrium air pressure valve 25, drain tap 24
In operational process, powder sample is able to enter feed hopper, and passes through loader and enter high gradient feed changeover portion, realizes
Line is uninterruptedly to the function of aerosol generating device powder supply.
The identical aperture of a large amount of diameters is uniform-distribution on the porous gas averaging board 28, for accelerating air-flow, high speed gas
The rolling action of stream provides necessary shearing force for the fluidisation of powder, reduces the agglomerate of just dress powder, so that powder is in the high gradient
It is fed in changeover portion and completes primary fluidisation.
The magazine, feed hopper, loader lower part cone generatrices and horizontal direction angle be all larger than powder
Angle of repose, the high gradient feed changeover portion 29 and horizontal direction angle are greater than the angle of repose of powder sample, avoid part powder
Last sample is largely detained in the region.
The aperture of the self-dispersing orifice plate 43 should meet with high flow velocities with disperse aerosol ball block, avoid again
The requirement of high concentration aerosol gas blocking.Self-dispersing orifice plate 43 utilizes 19 clamping fastener of flange, in this way can be according to different gas
Colloidal sol dispenses the demand of concentration, replaces to self-dispersing orifice plate 43.
The uniform flow orifice 38 and fluidized plate 41 is respectively by dry cylinder 13, bubbling cylinder 16 and boiling fluidisation cylinder 18
Side wall surface boss be sealed by the way of face contact.
Drying cylinder 13, bubbling cylinder 16 and the boiling fluidisation cylinder 18 is mounted on ground joint 37,39,42,
And ground joint is connected to inner wall, is influenced aerosol fluidisation to prevent aerosol generator inner accumulation electrostatic, is caused
Excessive aerosol is adsorbed on wall surface.
The bubbling cylinder is equipped with probe-type hygrometer 40, and measurement end is located at tubular axis position, and real-time measurement is dry
Treated gas humidity, and decided whether more to renew desiccant according to measurement result.
38 aperture of uniform flow orifice is less than desiccant smallest particles diameter, prevents desiccant from entering uniform flow orifice aperture
It is uneven to cause assignment of traffic, and causes to be bubbled congestion in cylinder.
Airflow design is used at the top of the boiling fluidisation cylinder 18, and inner wall has smooth coating, it is with higher
Wall surface finish, can both having prevented gas flowing in this way, there are stagnant areas, cause aerosol to be detained, also can prevent wall surface is coarse to make
At particle deposition, to improve whole aerosol luminous efficiency.
41 aperture of fluidized plate is fine and close, and Kong Zhen is evenly distributed, and guarantees fluidisation uniformly and prevents aerosol sample from seeping
Enter in fluidized plate, blocking fluidized plate is to influence fluidized plate utilization rate.
The pneumatic filter 3 can filter the impurity in gas, to prevent aperture in impurity blocking portion homogenizing plate from making
At assignment of traffic unevenness or enter fluidisation section blocking fluidized plate.
The cooling driers 4 carry out preliminary dehumidification treatments to air-flow, can extend the service life of dryer section internal desiccant
Degree of drying with the fluidisation section air that boils is entered, avoids aerosol moisture absorption from agglomerating.
The main air pipe and blowdown pipe road are equipped with pressure reducing valve, regulating valve, shut-off valve and flowmeter, by appropriate
Adjusting can produce the stabilization tolerance for meeting actual requirement.
Basic functional principle of the invention is as follows:
As shown in Figure 1, the working principle of the air-flow supply portion described in it is: compressor is opened when use, by work gas
Body is compressed in air accumulator 2, and air accumulator 2 plays the role of compensator or trimmer pressure, and guarantee is supplied with steady pressure.From air accumulator 2
The working gas of middle outflow enters pneumatic filter 3, is filtered to the impurity in working gas, and impurity blocking is avoided to flow
Orifice plate and fluidized plate, and the pollution to aerosol sample, and air cavity is formed between the homogenizing plate and fluidized plate.After filtering
Gas enter cooling driers 4 and carry out that the first order is dry, and most of moisture removes in cooling driers, it is longer to guarantee that downstream desiccant has
Service life and improve the final mass dryness fraction of gas.Obtained pure, dry gas respectively enters tonifying Qi pipeline 34 and main gas
Pipeline 5.Adjusting pressure reducing valve 7, flow control valve 10 meet the requirements carrier gas flux and pressure, to mention for aerosol generating device
For stable gas source.
As shown in Figure 1 and Figure 2, the powder is dry and the working principle of boiling fluidisation part is: working gas first into
Enter dry cylinder 13 and come into full contact with the desiccant 36 for being placed on dry inner barrel, dry working gas can effectively be prevented
Only aerosol dampness agglomeration, so that more conducively aerosol is carried by gas.Uniform flow orifice 38 is then passed through, is existed to be homogenized gas
Flow on cylinder cross section, the gap between uniform flow orifice 38 and fluidized plate 41 guarantee to complete homogenizing by the air-flow of homogenizing orifice plate
Assigning process.The uniform flow orifice pore size is same, hole battle array arranged distribution it is uniform, guarantee outlet uniformly and flow resistance
Small, 38 aperture of uniform flow orifice is less than desiccant smallest particles diameter, prevents 36 blocking portion uniform flow orifice aperture of desiccant, makes
At assignment of traffic unevenness.Fluidization of the uniform air-flow of assignment of traffic further across fluidized plate 41, the gas out of fluidized plate 41
Stream is flowed out in a manner of being bubbled, and is distributed very evenly on entire cylinder cross section, so that rising for aerosol is turned on cross section
With uniform, avoid the occurrence of cannot the dead angle of rising effect occur, so that the aerosol in boiling fluidisation cylinder 18 is remained stream
Change state is conducive to the uniformity and stability of aerosol dispatching.The aperture cause of fluidized plate 41 is dense and uniform, guarantees even fluidizing
While avoid boiling fluidisation cylinder 18 in aerosol penetrate into fluidized plate 41, and cause fluidized plate blocking and aerosol sample into
Enter upstream pipeline section.Uniform flow orifice 37 and fluidized plate 41 are respectively by dry cylinder 13, bubbling cylinder 16 and boiling fluidisation 18 side of cylinder
Wall surface boss grips, to guarantee good leakproofness and detachability.Gas after fluidizing fluidizes cylinder in boiling
18 lower semisection generates uniformly rising effect, aerosol and the air-flow for fluidisation of boiling and is uniformly mixed together, and cocurrent outlet is molten
Glue generator.It is airflow design at the top of boiling fluidisation cylinder 18, and wall surface finish with higher, ensure that carrier band gas is molten
The air-flow uniform flow aerosol generator of glue prevents stagnant area and separates aerosol entrained by gas and influence whole
Aerosol dispense concentration.Dry cylinder 13, bubbling cylinder 16 and boiling fluidisation cylinder 18 are connected to the respective inner wall of connection respectively
Grounding ports 37,39,42, can by grounding ports export inner barrel formed electrostatic, avoid Electrostatic Absorption aerosol,
And influence aerosol luminous efficiency.It is bubbled cylinder and is connected through a screw thread probe-type hygrometer 40, hygrometer measuring section, which is located at, to be bubbled
16 axial location of cylinder, can gas humidity of the real-time measurement after being dried, it is convenient to judge whether that desiccant is replaced in time.
As shown in Fig. 2, the working principle of the powder self-dispersing part is: containing gas from what boiling fluidisation cylinder flowed out
The gas of colloidal sol pass through self-dispersing orifice plate, gas due to circulation area reduce and flow velocity increases rapidly, the aerosol sample being carried
Product particle since effect of inertia flow velocity is lower, the gentle body of aerosol particle forms very high speed difference.It is poor at high speed to increase
Impact and shear action of the atmospheric to aerosol particle, thus automatically break up ball block biggish in entrained aerosol, from
And achieve the purpose that generate tiny, uniform aerosol dispatching.
As shown in Figure 1, the working principle of the powder on-line continuous powder supply part is: loader passes through exhaust valve respectively
Door 24, equilibrium air pressure valve 25 are communicated with external environment and generating device main body, meanwhile, loader 26 passes through upper and lower two valves
23,27 are connected with feed hopper 22 and high gradient feed changeover portion 29 respectively, and high gradient feed changeover portion 29 then passes through welding side
Formula is connect with boiling fluidisation cylinder 18；When aerosol generating device operation, blanking valve 23, drain tap 24, which are in, closes shape
State, blanking valve 27, equilibrium air pressure valve 25 are in the open state, and loader is isolated with external environment, and fluidize with boiling
Inner barrel is identical, so that the powder in loader be made to fall into high gradient feed section by gravity.Meanwhile coming from tonifying Qi pipeline
34 gas accelerates air-flow through porous gas averaging board 28, and the rolling action of high-speed flow provides necessity for the abundant fluidisation of powder
Turbulent flow and shearing force, reduce the clustering phenomena of powder.So that the most of powder fallen into high gradient feed changeover portion 29 exists
It does not fall within before fluidized plate 38, primary fluidisation is just completed in high gradient changeover portion.When aeresols generator needs add
When aerating colloidal sol powder, valve 21 is opened, and successively closes blanking valve 23 and balance air pressure valve 25, then opens exhaust valve
24, it discharges the pressure in loader 26 to environmental pressure, closes drain tap 24 later, open blanking valve 23, feed hopper
Aerosol powder is fallen into loader 26 by gravity in 22, later, is closed blanking valve 23, is successively opened equilibrium air pressure valve 25
With blanking valve 27, the powder in loader 26 enters boiling fluidisation cylinder under the collective effect of balance pressure and supplemental air flow
In 18, to realize the process that powder on-line uninterruption is supplied to generating device.
To sum up, the present invention allows powder at fluidized plate due to the unique design of pneumatic conveying drying section and boiling fluidized plate
It is bubbled under the action of air-flow in fluidized state；In self-dispersing section, part agglomerated powders are under the action of high-speed flow into one
Step is dispersed, and is efficiently solved the problems such as the poly- and agglomerating of cohesive powders, vibration agglomeration and water suction deliquesce, is effectively prevented
Existing particle unevenness and appearance the problems such as powder is discontinuous out, ensure that aerosol powder during the supply of aerosol powder
Uniformly continuous supply.
Claims (3)
1. a kind of long-term fluidisation type aerosol generating device with self-dispersing function, it is characterised in that: including air-flow supply unit
Point, pneumatic conveying drying part, powder boiling fluidisation part, powder self-dispersing part and powder on-line continuous supply portion, it is described
Pneumatic conveying drying part includes setting drying cylinder on the base, setting in the intracorporal desiccant of drying cylinder, the powder boiling
Fluidisation part includes the bubbling cylinder connecting with dry cylinder upper end, the probe-type hygrometer being bubbled on cylinder and drum is arranged in
It steeps the connected boiling in cylinder upper end and fluidizes cylinder, dry cylinder and the junction for being bubbled cylinder are provided with uniform flow orifice, in drum
The junction of bubble cylinder and boiling fluidisation cylinder is provided with fluidized plate, and powder self-dispersing part includes being set by clamping flange
The dispersion orifice plate on boiling fluidisation cylinder upper end outlet is set, the powder on-line continuous supply portion includes fluidizing cylinder with boiling
High gradient changeover portion that body communicates, is vertically arranged in high gradient transition at the porous gas averaging board that high gradient changeover portion end is arranged in
Loader in section, the feed hopper being arranged on loader, the magazine being arranged in above feed hopper, setting in magazine
There is valve, blanking valve is respectively arranged in loader and feed hopper, loader passes through equilibrium air pressure valve and boiling fluidisation cylinder
Body communicates, and loader also passes through drain tap and communicates with atmosphere, and the air-flow supply portion includes by the sequentially connected pressure of pipeline
Contracting machine, air accumulator, pneumatic filter and cooling driers, cooling driers are connect with main air pipe and tonifying Qi pipeline respectively by valve body, are mended
No.1 pressure reducing valve, No.1 shut-off valve, No.1 flowmeter and tonifying Qi valve, tonifying Qi valve and the high gradient are disposed in feed channel
The end of changeover portion is connected to, and No. two pressure reducing valves, No. two shut-off valves, No. two flowmeters, flow are set gradually on main air pipe and is adjusted
Valve, and the end of main air pipe be connected to the lower end of dry cylinder, the high gradient feed changeover portion refer to feed changeover portion and
There are angles for horizontal direction, and high gradient feed changeover portion and horizontal direction angle are greater than the angle of repose of powder sample.
2. a kind of long-term fluidisation type aerosol generating device with self-dispersing function according to claim 1, feature
It is: is provided with ground joint on the bubbling cylinder, boiling fluidisation cylinder and dry cylinder.
3. a kind of long-term fluidisation type aerosol generating device with self-dispersing function according to claim 1 or 2, special
Sign is: uniformly setting up separately on the porous gas averaging board and is equipped with the identical aperture of diameter；It is minimum that uniform flow orifice aperture is less than desiccant
Particle diameter.
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| CN113457479B (en) * | 2021-07-22 | 2022-09-23 | 上海交通大学 | Dust aerosol generating system with constant and stable quantitative concentration |
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| CN116256301A (en) * | 2023-05-15 | 2023-06-13 | 四川航天拓达玄武岩纤维开发有限公司 | Basalt fiber filter bag filtering experiment device and method |
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| CN106512872A (en) | 2017-03-22 |
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