CN106153816A - Cyclone fluidized bed solids generator - Google Patents
Cyclone fluidized bed solids generator Download PDFInfo
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- CN106153816A CN106153816A CN201610646669.7A CN201610646669A CN106153816A CN 106153816 A CN106153816 A CN 106153816A CN 201610646669 A CN201610646669 A CN 201610646669A CN 106153816 A CN106153816 A CN 106153816A
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- gas circuit
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- fluidized bed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Fluid Mechanics (AREA)
- Cyclones (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a kind of cyclone fluidized bed solids generator, it is in main gas circuit, draw the bypass gas flow driving power as particle generator, bypass gas flow is respectively by bottom and sidewall tangential through hole injection pressure container, the air-flow that bottom is injected is used for driving fluid bed, the air-flow being injected tangentially can form eddy flow and increase air turbulence degree, the solids that comprehensive utilization fluid bed and eddy flow dispersion are dried, form aerosol, thus ensure mass particle, finally by the gas circuit on pressure vessel top, aerosol injected main gas circuit.The present invention need not extra high-pressure air source, will not change air or fuel gas flow and relative scale thereof, can avoid increasing the use of extra effusion meter/flow controller.Utilizing fluid bed and cyclone structure, can be effectively improved the uniformity of particle diffusion, and be prevented effectively from fluid bed formation and stablize gas circuit and lost efficacy, this apparatus structure is simple, convenient operating maintenance, invests and maintenance cost is low.
Description
Technical field
The present invention relates to a kind of solids generator, particularly relate to a kind of cyclone fluidized bed solids generator, should
Generator can be directly accessed raw-gas pipeline and not change general gas flow, and the solid particles being particularly suitable combustion diagnosis occurs
Device.
Background technology
In recent years, Laser Doppler Velocimeter (LDV, Laser Doppler Velocimetry), particle image velocimetry
The laser measuring techniques such as instrument (PIV, Particle Image Velocimetry) are increasingly being used in combustion diagnosis.
When laser measuring techniques such as applying LDV, PIV carries out particle flow measurement, trace particle produces and disseminates is to obtain
Obtain the guarantee of preferable measurement result, be also one of restrictive condition restricting the application of this kind of laser technology.In order to enable accurately to measure stream
The speed of field and structure, trace particle must have good followability, has higher scattered power to laser, in measured zone
Disseminate uniformly and concentration is appropriate.Therefore trace particle produces and conveying is most important, for combustion diagnosis, in addition it is also necessary to examine
Consider particle stability at high temperature.
It is currently based on the liquid particles generator of atomizing type, at high temperature easily decomposes or gasification, it is impossible in burning
Aerocolloidal particle shape is kept during measurement.Existing solids generator, generally uses extra high-pressure air source to drive, from
Set single-nozzle below equipment container, be vertically passed through high velocity air and pass through solid particles layer, carry granule and pass through fine nozzle, real
The conveying of existing solid particles and distribution, but usually can run into owing to airway blockage or solid particles spread uneven, and make
Become the problem that particle occurs to lose efficacy or built up.
Meanwhile, these equipment are generally required for extra high-pressure air source, actually used during generally require extra stream
Gauge or flow controller carry out accurate measurement and control combustion gas and air mass flow in combustor.
Summary of the invention
The particle generator that present invention aims to use in combustion diagnosis at present generally requires additional high pressure
Be easily formed stable gas circuit inside source of the gas and effusion meter/flow controller, and solids generator based on fluidized bed principle and
The problem lost efficacy, it is provided that a kind of easy cyclone fluidized bed solids generator, it is possible to solve at lower cost in fluid bed
Form the problem stablize gas circuit, it is provided that stable, uniform particle sizes, concentration adjustable high-quality aerosol, also can avoid use
Extra source of the gas and effusion meter/flow controller, be particularly suitable for combustion diagnosis.
The cyclone fluidized bed solids generator of the present invention accesses in fuel gas pipeline by joint, including: check valve, master
Gas circuit and pressure vessel, check valve is arranged on main gas circuit upstream, is provided with the first air valve in main gas circuit, and at the first air valve and list
Between valve, have bypass, bypass is provided with the second air valve, if bypass branch is main line, wherein a road after the second air valve
Connecting with pressure vessel bottom, remaining bypass branch is respectively with the swirling inlet hole being opened on pressure vessel circumferential side wall even
Logical, in pressure vessel, bottom is provided with sintering glass plate, and sintering glass plate is placed pressed powder, and pressure vessel has sealing top
Covering, this top cover can be opened, and pressure vessel top is provided with gas circuit and connects with main gas circuit.
In technique scheme, described swirling inlet hole is tangentially offered along pressure vessel circumference so that multiple bypasses divide
Prop up air-flow the most tangentially to inject in pressure vessel, thus form eddy flow, increase air turbulence degree by rotational-flow shearing effect, point
Shot, is formed in being prevented effectively from fluid bed and stablizes gas circuit and lost efficacy.
The first described air valve is globe valve, and the second air valve is needle valve.Can be well by arranging first and second air valve
Regulation enters the air flow rate in main gas circuit and pressure vessel, it is achieved to generating the control of particle concentration in aerosol, in bypass
Middle installation needle valve, need not use particle generator when, can completely close needle valve and block bypass gas flow, and not
Need whole cyclone fluidized bed solids generator to disassemble, simple operation.
Described particle generator also includes eccentric motor and voltage controller power source, and eccentric motor is fixed on pressure by clip to be held
Device outer wall, voltage controller power source is that eccentric motor is powered.Eccentric motor can be relied on to drive cyclone fluidized bed solids generator
Pressure vessel vibrates, and stirs tank interior particle, it is to avoid forms steady air flow path in fluid bed and lost efficacy.And pass through pressure-adjustable
Power supply realizes the rotating speed to eccentric motor and controls, thus controls particle concentration in aerosol.
In order to clear up conveniently, have dumping pit at described pressure vessel bottom, and dumping pit plug is installed.
In order to improve the voltage endurance capability of cyclone fluidized bed solids generator, it is preferable that described main gas circuit and bypass
All use stainless steel tube.
Described pressed powder is usually micron-sized oxide powder.
The present invention based on principle be: in the main gas circuit of air or air mixture draw bypass gas flow be used as particle send out
The driving power of raw device, bypass gas flow is injected separately into by the tangential through hole of particle generator pressure vessel bottom and sidewall, bottom
The air-flow injected is used for driving fluid bed, and the air-flow being injected tangentially can form eddy flow and increase air turbulence degree, comprehensive utilization stream
Change bed and eddy flow disperse the solids being dried, and form aerosol, thus ensure mass particle, finally by pressure vessel top
Aerosol is injected main gas circuit by the gas circuit on portion's sidewall.
The invention has the beneficial effects as follows, it is not necessary to extra source of the gas for particle generate and dispense, will not change air or
Person is gas flow, thus does not interferes with equivalent proportion, it is possible to reduce the use of effusion meter/flow controller.In combination with stream
Change bed and eddy flow, it is possible to increase the quality that particle dispenses.Meanwhile, eddy flow and the use of eccentric motor, it is possible to the lowest cost
Avoid fluid bed is formed the trouble stablizing gas circuit and lost efficacy.The dumping pit of pressure vessel bottom can facilitate after experiment completes
Ground takes out particle powder, it is to avoid particle makes moist.Present configuration is simple, easy to operate, safeguards simple, investment and maintenance cost
Low.
Accompanying drawing explanation
The present invention will be further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the overall structure schematic diagram of the present invention cyclone fluidized bed solids generator.
Fig. 2 is that the present invention cyclone fluidized bed solids generator eddy flow produces schematic diagram (Figure 1A-A cut open to).
Fig. 3 is the application schematic diagram of the present invention cyclone fluidized bed solids generator.
In figure, the 1. main gas circuits 5. pressure vessels top cover (blank flange) of bump joint 2. check valve 3. ball valve 4. are the fastest
Dress thimble connector 7. bump joint 8. pad 9. eccentric motor 10. clip 11. voltage controller power source 12. pressure vessel more than 13.
Orifice plate (sintering glass plate) 14. support 15. dumping pit plug 16. three way cock 17. four-way connection 18. needle valve 19. is revolved
Flow to pore 20. dumping pit
A. source of the gas B. effusion meter/flow controller C. cyclone fluidized bed solids generator D. combustion apparatus.
Detailed description of the invention
Fig. 1 is the front schematic view of cyclone fluidized bed solids generator, and Fig. 2 is that Figure 1A-A cuts open to schematic diagram, i.e. revolves
Stream fluid bed solids particle generator eddy flow produces schematic diagram, and Fig. 3 is the application signal of cyclone fluidized bed solids generator
Figure.As shown in Figure 1, Figure 2 and Figure 3, the cyclone fluidized bed solids generating apparatus of this example, mainly include bump joint 1
With 7, check valve 2, ball valve 3, main gas circuit 4, fast twist flange top cover (by blank flange 5, Quick hoop joint 6, pad 8 is constituted),
Eccentric motor 9, clip 10, voltage controller power source 11, pressure vessel 12, sintering glass plate 13, support 14, three way cock 16, four connect
17, needle valve 18.
This particle generator accesses in gas circuit by bump joint 1 and 7, it is achieved dismounting is (when gas circuit uses rapidly
During flexible pipe, it is also possible to replace with pagoda joint).Check valve 2 is arranged on main gas circuit 4 upstream, installs check valve at approach section permissible
Prevent pressed powder from sailing against the current along gas circuit, pollute the effusion meter/flow controller of upstream, fuel gas flow or oxidation air warp
Being divided into two-way after crossing check valve 2, a main gas circuit of curb is run, and the bypass being opened in main gas circuit of separately leading up to imports eddy flow
In the pressure vessel of fluid bed solids particle generator (being also particle storage container), it is assigned to the big I of air-flow of two-way pipeline
To be regulated by ball valve 3 and needle valve 18.In pressure vessel 12, bottom is provided with sintering glass plate 13, and sintering glass plate 13 is put
Put micron-sized oxide powder and (typically commonly use Al2O3,MgO,TiO2), the air-flow entering pressure vessel is divided into two ways to note
Entering, pressure vessel bottom of leading up to vertically injects, and drives fluid bed, and another then flows to pore from pressure vessel side rotary
Inject, form eddy flow and increase air turbulence degree, dispersed particle, avoid fluid bed to form stable gas circuit simultaneously and lost efficacy.Through perpendicular
Straight air-flow and cyclonic action, micron-sized oxide powder forms uniform aerosol at pressure vessel top, afterwards by setting
Put the gas circuit on pressure vessel top to be injected among main gas circuit and lead to combustion apparatus.
Pressure vessel 12 described in this example is evenly distributed in four swirling inlet holes 19 along it, and described bypass is at pin
Connecting four-way connection 17 after type valve 18, wherein a road connects bottom pressure vessel 12, and remaining two-way respectively connects a threeway
Joint 16 forms 4 bypass branch the most altogether, and 4 bypass branch are connected, as shown in Figure 2 with 4 swirling inlet holes 19 respectively.
In order to regulate main gas circuit and the air flow rate entered in pressure vessel, it is achieved to generating particle concentration in aerosol
Control, in main gas circuit and bypass, be mounted with globe valve 3 and needle valve 18 respectively.Preferably, bypass is installed needle valve, not
The when of needing to use particle generator, needle valve 18 can be completely closed and block bypass gas flow, without whole eddy flow
Fluid bed solids particle generator disassembles.
In order to improve the voltage endurance capability of cyclone fluidized bed solids generator, it is preferable that pipeline uses stainless steel tube,
Gas circuit bifurcated mouth employs three way cock 16 and four-way connection 17 connects.
In order to ensure aerosol mass, pressed powder requires to keep being dried, before pressed powder is joined in container,
Heat well, remove moisture extra in pressed powder.Gas during use should be dried.
In order to add pressed powder in pressure vessel easily, pressure vessels top cover can quickly be opened and seal, this pressure
Force container top pressure closure is made up of blank flange dish 5, seal washer 8 and Quick hoop joint 6.
In order to prevent powder to be placed in pressure vessel the blocking pipeline that makes moist for a long time, after experiment, first open pressure top
Lid, takes out most residual powder, takes out sintering glass plate, and excessive residual powder can be by offering at pressure vessel bottom
Dumping pit 20 be easily removed.
Lost efficacy to prevent formation in fluid bed from stablizing gas circuit further and increased the control ability to aerosol concentration,
The present invention cyclone fluidized bed solids generator is mounted with eccentric motor 9 at pressure vessel outer wall, and eccentric motor passes through two
Stainless steel lathe dog 10 is fixed on pressure vessel, relies on eccentric motor to drive the vibration of cyclone fluidized bed solids generator, stirs
Dynamic tank interior particle, it is to avoid formed in fluid bed and stablize gas circuit and lost efficacy.And realized eccentric motor by pressure-adjustable power supply
Rotating speed control, thus control particle concentration in aerosol.
For ensureing that particle generator produces aerocolloidal quality, it is preferable that when burning is for premixed combustion, cyclone fluidized bed
Solids generator accesses air mixture gas circuit；When using non-premixed combustion, cyclone fluidized bed solids generator connects
Enter the air gas circuit that throughput is bigger.
In order to prevent particle from depositing caking in gas circuit, block gas circuit, it is desirable to the gas circuit between particle generator and equipment
Short as far as possible.
Claims (6)
1. a cyclone fluidized bed solids generator, this particle generator accesses in supply air line by joint, its feature
It is, including: check valve (2), main gas circuit (4) and pressure vessel (12).Check valve (2) is arranged on main gas circuit (4) upstream, is leading
Gas circuit (4) is provided with the first air valve (3), and has bypass between the first air valve (3) and check valve (2), and bypass is provided with
Second air valve (18), at the second air valve (18) if bypass branch is main line afterwards, wherein a road and pressure vessel (12) bottom connect
Logical, remaining bypass branch connects with the swirling inlet hole (19) being opened on pressure vessel (12) circumferential side wall respectively, and pressure holds
Device (12) interior bottom is provided with sintering glass plate (13), and sintering glass plate (13) is placed pressed powder, and pressure vessel (12) has
Top pressure closure (15), this top cover (15) can open, and pressure vessel (12) top is provided with gas circuit and connects with main gas circuit.
Cyclone fluidized bed solids generator the most according to claim 1, it is characterised in that described swirling inlet hole
(19) tangentially offer along pressure vessel (12) circumference.
Cyclone fluidized bed solids generator the most according to claim 1, it is characterised in that the first described air valve
(3) being globe valve, the second air valve (18) is needle valve.
Cyclone fluidized bed solids generator the most according to claim 1, it is characterised in that described particle generator
Also including eccentric motor (9) and voltage controller power source (11), eccentric motor (9) is fixed on pressure vessel (12) outward by clip (10)
Wall, voltage controller power source (11) is eccentric motor (9) power supply.
Cyclone fluidized bed solids generator the most according to claim 1, it is characterised in that described pressure vessel
(12) bottom has dumping pit (20), and is provided with dumping pit plug (15).
Cyclone fluidized bed solids generator the most according to claim 1, it is characterised in that described solids are
Micron-sized oxide powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610646669.7A CN106153816B (en) | 2016-08-09 | 2016-08-09 | Cyclone fluidized bed solids generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610646669.7A CN106153816B (en) | 2016-08-09 | 2016-08-09 | Cyclone fluidized bed solids generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106153816A true CN106153816A (en) | 2016-11-23 |
| CN106153816B CN106153816B (en) | 2018-05-22 |
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ID=57329281
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610646669.7A Active CN106153816B (en) | 2016-08-09 | 2016-08-09 | Cyclone fluidized bed solids generator |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596833A (en) * | 2016-11-28 | 2017-04-26 | 新奥泛能网络科技股份有限公司 | Combustion apparatus |
| CN107132025A (en) * | 2017-06-26 | 2017-09-05 | 西华大学 | Solids filling apparatus and flow field survey device |
| CN113847597A (en) * | 2021-09-14 | 2021-12-28 | 中国空气动力研究与发展中心空天技术研究所 | Gas fuel premixing rotational flow particle generating device |
| CN114487474A (en) * | 2021-12-27 | 2022-05-13 | 北京理工大学 | Device for controlling supply of tracer particles |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2882774Y (en) * | 2005-09-30 | 2007-03-28 | 清华大学 | Solid particle aerosol producer |
| CN101975871B (en) * | 2010-09-27 | 2013-02-20 | 北京航空航天大学 | Fuming-type trace particle generator |
| CN103940573B (en) * | 2014-05-06 | 2016-08-17 | 大连理工大学 | In a kind of small size PIV flow-field test experiment, trace particle dispenses device and cloth scattering method |
| CN204594656U (en) * | 2015-04-15 | 2015-08-26 | 上海交通大学 | Eddy flow guiding type high pressure nano particle apparatus for aerosol creation |
| CN205982205U (en) * | 2016-08-09 | 2017-02-22 | 浙江大学 | Whirl fluidized bed solid particle generator |
-
2016
- 2016-08-09 CN CN201610646669.7A patent/CN106153816B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596833A (en) * | 2016-11-28 | 2017-04-26 | 新奥泛能网络科技股份有限公司 | Combustion apparatus |
| CN107132025A (en) * | 2017-06-26 | 2017-09-05 | 西华大学 | Solids filling apparatus and flow field survey device |
| CN113847597A (en) * | 2021-09-14 | 2021-12-28 | 中国空气动力研究与发展中心空天技术研究所 | Gas fuel premixing rotational flow particle generating device |
| CN113847597B (en) * | 2021-09-14 | 2023-10-10 | 中国空气动力研究与发展中心空天技术研究所 | Gas fuel premixing cyclone particle generating device |
| CN114487474A (en) * | 2021-12-27 | 2022-05-13 | 北京理工大学 | Device for controlling supply of tracer particles |
| CN114487474B (en) * | 2021-12-27 | 2023-02-03 | 北京理工大学 | Device for controlling supply of tracer particles |
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| Publication number | Publication date |
|---|---|
| CN106153816B (en) | 2018-05-22 |
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