CN105728219B - A kind of hit adds self-oscillatory highly viscous fluid two-phase nozzle - Google Patents
A kind of hit adds self-oscillatory highly viscous fluid two-phase nozzle Download PDFInfo
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- CN105728219B CN105728219B CN201610248849.XA CN201610248849A CN105728219B CN 105728219 B CN105728219 B CN 105728219B CN 201610248849 A CN201610248849 A CN 201610248849A CN 105728219 B CN105728219 B CN 105728219B
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- nozzle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
Abstract
It is hit plus self-oscillatory highly viscous liquid two-phase nozzle the invention discloses a kind of, including nozzle, gas are into flow tube and four shock ejector fillers.Highly viscous liquid initially enters shock ejector filler and carries out shock atomization, forms liquid film.Air-flow is flowed into from gas into flow tube, is acted on liquid film, is made liquid sheet breakup at droplet.Then air-flow carrying drop enters the oscillation chamber in nozzle, and air-flow makes drop further be crushed in oscillation intracavitary high frequency oscillation.Finally, air-flow carries droplet and is sprayed from the through-hole in oscillator, completes atomization.Oscillator can slide in nozzle, and be fixed using screw in compression.So the length of oscillation chamber can be adjusted by adjusting position of the oscillator in nozzle.Liquid successively have passed through shock, pneumatic and three kinds of atomization process of self-oscillation in the present invention, effectively improve the atomizing effect of highly viscous fluid.
Description
Technical field
The invention belongs to atomization plants, and in particular to a kind of hit adds self-oscillatory highly viscous fluid two-phase nozzle.
Background technology
Gel fuel has many advantages, such as solid fuel high security, easily stores and be not easy to leak, and has liquid fuel flow
Controllable advantage, and some metallic particles can be added wherein and increase energy is a kind of to have very much fortune in aerospace field
With the fuel of foreground, therefore greatly paid close attention to.But gel fuel is a kind of non-newtonian fluid, viscosity is very high, and there are difficulties
The problem of to be atomized.For gel fuel, generally use direct injection, pressure is rotary or Y type two-phase nozzles, they are all difficult to reach
To good atomizing effect.Current two strands or three strands of impinging injectors can obtain preferable liquid crushing effect and state
The more form of nozzle of inside and outside research, but its fogging degree is still not ideal enough.
Invention content
The purpose of the present invention is to provide a kind of hit to add self-oscillatory highly viscous fluid two-phase nozzle so that highly viscous
(The viscosity order of magnitude is 103More than)Fluid can reach preferable atomizing effect and uniform spatial distribution, be follow-up
Efficient burning tissues provide condition.
Realize that the technical solution of the object of the invention is:A kind of hit adds self-oscillatory highly viscous fluid two-phase spray
Mouth, including nozzle, gas, into flow tube and four shock ejector fillers, nozzle one end is connected with gas into flow tube, gas is into flow tube side
It is symmetrically opened on wall there are four the first through hole being located on the same horizontal plane, four shock ejector fillers are separately fixed at described first
In through-hole.
The nozzle includes the first straight pipe set gradually, collapsible tube and the second straight pipe, the second straight pipe and gas
It being connected into flow tube, the diameter of the first straight pipe is more than the diameter of collapsible tube minimum end face, far from collapsible tube in the first straight pipe
One end is equipped with oscillator, and center is equipped with the second through-hole, and the second the front end of the through hole face constitutes oscillation chamber with the first straight pipe.
Second through-hole is first straight rear expansion through-hole.
Nozzle further includes trip bolt, and the first straight pipe side wall equipped with oscillator is provided with threaded hole, passes through fastening
Screw in compression oscillator.
Oscillation cavity length is Lx, a diameter of D of the first straight pipe11, a diameter of D of collapsible tube minimum end face12, D11For D12
2 ~ 6 times, Lx D112 ~ 3 times, the angle of throat β of collapsible tube is 60 ° ~ 90 °.
The gas includes connection straight tube and inlet pipe connection into flow tube, and connection straight tube outer wall is symmetrically opened same there are four being located at
First through hole on one horizontal plane hits ejector filler for fixed;It connects straight tube one end to be connected with nozzle, the other end and air inlet
Connecting tube is connected, and the center of inlet pipe connection is provided with the first straight rear third through-hole expanded, and the flat segments of third through-hole are for connecting
Connect air source.
The expansion angle of the third through-hole expansion segment is 30 ° ~ 75 °, connects a diameter of D of straight tube21, in inlet pipe connection
A diameter of D of third through-hole flat segments22, D21For D221.5 ~ 3 times.
Further include gasket, gasket is located at gas at the top of the connection straight tube of flow tube, ensureing the close of nozzle and gas influent stream pipe
Feng Xing.
The outlet end for hitting ejector filler is symmetrically provided with 2 inclined holes, the friendship of two inclined holes using end face center as symmetric points
Point is in the connection straight tube of nozzle.
The angle of described two inclined holes is α, and α is 45 ° ~ 120 °.
Compared with prior art, the present invention its remarkable advantage is:(1)Liquid successively have passed through shock, pneumatic and self-excitation
Three kinds of atomization process are vibrated, the atomizing effect of highly viscous fluid is effectively improved.
(2)It uses four and is distributed in conplane two strands of impinging injectors, enhance the effect for hitting atomization.
(3)It can be replaced and adjust for generating the self-oscillatory oscillator of air-flow, be disturbed with obtaining maximum oscillation
It is dynamic.
(4)It is simple in structure, it is easy to implement.
Description of the drawings
Fig. 1 is that the present invention hits the overall structure diagram for adding self-oscillatory highly viscous fluid two-phase nozzle.
Fig. 2 is the D-D sectional views of Fig. 1 of the present invention.
Fig. 3 is that the present invention is hit plus the partial structurtes of the shock ejector filler of self-oscillatory highly viscous fluid two-phase nozzle are shown
It is intended to.
Fig. 4 is that the present invention hits the nozzle arrangements schematic diagram for adding self-oscillatory highly viscous fluid two-phase nozzle.
Fig. 5 is that the present invention is hit plus the gas of self-oscillatory highly viscous fluid two-phase nozzle is into flow tube structural schematic diagram.
Fig. 6 is the nozzle partial structural diagram of the embodiment of the present invention 2.
Specific implementation mode
Present invention is further described in detail below in conjunction with the accompanying drawings.
Combined with Figure 1 and Figure 2, it is a kind of hit plus self-oscillatory highly viscous fluid two-phase nozzle, including nozzle 1, gas into
Flow tube 2 and four shock ejector fillers 3,1 one end of nozzle and gas are connected into flow tube 2, and gas is into being symmetrically provided on 2 side wall of flow tube
Four first through hole being located on the same horizontal plane, four shock ejector fillers 3 are separately fixed in the first through hole.
In conjunction with Fig. 4, nozzle 1 includes the first straight pipe 11, collapsible tube 12 and the second straight pipe 13 set gradually, and second is flat
Straight tube 13 is connected with gas into flow tube 2, and the diameter of the first straight pipe 11 is more than the diameter of the minimum end face of collapsible tube 12, and first is straight
The one end of pipe 11 far from collapsible tube 12 is equipped with oscillator 14, and center is equipped with the second through-hole, the second the front end of the through hole face and first straight
Pipe 11 constitutes oscillation chamber.
Second through-hole is first straight rear expansion through-hole, i.e., is flat end close to the through-hole of 12 one end of collapsible tube.
Nozzle 1 further includes trip bolt 15, and 11 side wall of the first straight pipe equipped with oscillator 14 is provided with threaded hole, is led to
It crosses trip bolt 15 and compresses oscillator 14.
Oscillation cavity length is Lx, a diameter of D of the first straight pipe 1111, a diameter of D of the minimum end face of collapsible tube 1212, D11
For D122 ~ 6 times, Lx D112 ~ 3 times, the angle of throat β of collapsible tube 12 is 60 ° ~ 90 °.
In conjunction with Fig. 5, gas includes connection straight tube 21 and inlet pipe connection 22 into flow tube 2, connects and is symmetrically provided on straight tube 21
Four first through hole being located on the same horizontal plane hit ejector filler 3 for fixed;It is solid with nozzle 1 to connect 21 one end of straight tube
Even, the other end is connected with inlet pipe connection 22, and the center of inlet pipe connection 22 is provided with the first straight rear third through-hole expanded, third
The flat segments of through-hole are for connecting air source, and the expansion segment of third through-hole is for connecting connection straight tube 21.
The expansion angle of the third through-hole expansion segment is 30 ° ~ 75 °, connects a diameter of D of straight tube 2121, inlet pipe connection
A diameter of D of third through-hole flat segments in 2222, D21For D221.5 ~ 3 times.
In conjunction with Fig. 3, the outlet end of ejector filler 3 is hit using end face center as symmetric points, is symmetrically provided with 2 inclined holes 31, two
The intersection point of inclined hole is located in the connection straight tube 21 of nozzle 1.
The angle of described two inclined holes 31 is α, and α is 45 ° ~ 120 °.
Further include gasket 4, gasket 4 is located at gas into 21 top of connection straight tube of flow tube 2, ensures nozzle 1 and gas influent stream
The leakproofness of pipe 2.
Embodiment 1
In conjunction with Fig. 1 to Fig. 5, it is a kind of hit plus self-oscillatory highly viscous fluid two-phase nozzle, including nozzle 1, gas into
Flow tube 2 and four shock ejector fillers 3,1 one end of nozzle and gas are connected into flow tube 2, and gas is into being symmetrically provided with four on 2 side wall of flow tube
A first through hole on the same horizontal plane, four shock ejector fillers 3 are separately fixed in the first through hole.
Nozzle 1 includes the first straight pipe 11, collapsible tube 12 and the second straight pipe 13 that set gradually, in the second straight pipe 13
Wall is equipped with screw thread, is connected into flow tube 2 with gas.The diameter of first straight pipe 11 is more than the diameter of the minimum end face of collapsible tube 12.The
Equipped with oscillator 14, oscillator 14 is cylinder for one one end of straight pipe 11 far from collapsible tube 12, and center is equipped with first straight rear expansion
The second through-hole opened, expansion segment can enhance the distribution of atomization field, and the second the front end of the through hole face is constituted with the first straight pipe 11
Chamber is vibrated, the angle of throat β of collapsible tube 12 is 60 °.The diameter of first straight pipe 11 is more than the diameter of the minimum end face of collapsible tube 12, this
Sample can make air-flow form recirculating zone in oscillation intracavitary.The front end face of 14 second through-hole of oscillator is plane, can be to vibrating chamber
Interior disturbance is reflected, and so that back wave is overlapped with oscillation chamber entry perturbation wave, perturbation wave is amplified, and can make gas in this way
Stream is in oscillation chamber medium-high frequency oscillation, to make drop further be crushed.The diameter D of first straight pipe 1111Most more than collapsible tube 12
The diameter D of small end face12, D11For D123 times, oscillation cavity length be Lx is D112 times.Air-flow carries droplet particles self-constriction
Pipe 12 enters oscillation chamber, after oscillation intracavitary oscillation, into the second through-hole, then sprays.
Nozzle 1 further includes trip bolt 15, and 11 side wall of the first straight pipe equipped with oscillator 14 is provided with threaded hole, is led to
It crosses trip bolt 15 and compresses oscillator 14.
In conjunction with Fig. 5, gas includes connection straight tube 21 and inlet pipe connection 22 into flow tube 2, connects and is symmetrically provided on straight tube 21
Four first through hole being located on the same horizontal plane, for fixing four shock ejector fillers 3.Connection at the top of first through hole is straight
21 outer wall of pipe is provided with screw thread, for being connected with the second straight pipe 13 of nozzle 1.The center of inlet pipe connection 22 be provided with first it is straight after
The flat segments of the third through-hole of expansion, third through-hole are equipped with screw thread, and for connecting air source, the expansion angle of expansion segment is 45 °.Even
Meet the diameter D of straight tube 2121For third through-hole flat segments diameter D in inlet pipe connection 22222 times, air-flow shadow can be prevented in this way
It rings the jet stream before hitting and can allow the flow to be applied on liquid film as far as possible, while can also make air-flow in connection straight tube 21
Interior formation recirculating zone increases action time and the blending efficiency of air.The outlet end for hitting ejector filler 3 is with end face center
Symmetric points, are symmetrically provided with 2 inclined holes 31, and the intersection points of two inclined holes is located at gas into the connection straight tube 21 of flow tube 2.Two inclined holes
31 angle α is 100 °.
Further include gasket 4, gasket 4 is located at gas into 21 top of connection straight tube of flow tube 2, ensures nozzle 1 and gas influent stream
The leakproofness of pipe 2.
Embodiment 2
In conjunction with Fig. 1 to Fig. 6, it is a kind of hit plus self-oscillatory highly viscous fluid two-phase nozzle, including nozzle 1, gas into
Flow tube 2 and four shock ejector fillers 3,1 one end of nozzle and gas are connected into flow tube 2, and gas is into being symmetrically provided on 2 side wall of flow tube
Four first through hole being located on the same horizontal plane, four shock ejector fillers 3 are separately fixed in the first through hole.
Nozzle 1 includes the first straight pipe 11, collapsible tube 12 and the second straight pipe 13 that set gradually, in the second straight pipe 13
Wall is equipped with screw thread, is connected into flow tube 2 with gas.First one end of straight pipe 11 far from collapsible tube 12 is equipped with oscillator 14, center
Equipped with first it is straight after expand the second through-hole, expansion segment can enhance atomization field distribution, the front end face of the second through-hole with
First straight pipe 11 constitutes oscillation chamber, and the angle of throat β of collapsible tube 12 is 60 °.The diameter of first straight pipe 11 is more than collapsible tube 12
The diameter of minimum end face can make air-flow form recirculating zone in oscillation intracavitary in this way.14 second the front end of the through hole face of oscillator is to cut
The conical surface.The angle theta of the conical surface of truncated cone shape and oscillation cavity wall is 60 ° ~ 90 °(75 ° are used herein).Chamber entry perturbation is vibrated to hit
In the second the front end of the through hole face back reflection of truncated cone shape, the reflecting effect of the conical surface is more preferable, and the pressure disturbance bigger of generation enables to
The oscillation of air-flow is more violent, thus to the disturbance of drop also can bigger so that transmitting of the atomizing effect relative to plane
Face is further improved.The diameter D of first straight pipe 1111More than the diameter D of the minimum end face of collapsible tube 1212, D11For D12's
6 times, it is D that oscillation cavity length, which is Lx,113 times.Air-flow carries droplet particles self-constriction pipe 12 and enters oscillation chamber, in oscillation chamber
After interior oscillation, into the second through-hole, then spray.
Further include trip bolt 15,11 side wall of the first straight pipe equipped with oscillator 14 is provided with threaded hole, by tight
Gu screw 15 compresses oscillator 14.
Gas includes connection straight tube 21 and inlet pipe connection 22 into flow tube 2, connects and is located at there are four symmetrically being opened on straight tube 21
First through hole on the same horizontal plane, for fixing four shock ejector fillers 3.21 outer wall of connection straight tube at the top of first through hole
It is provided with screw thread, for being connected with the second straight pipe 13 of nozzle 1.The center of inlet pipe connection 22 be provided with it is first straight after expand the
The flat segments of three through-holes, third through-hole are equipped with screw thread, and for connecting air source, the expansion angle of expansion segment is 60 °.Connect straight tube 21
Diameter D21For third through-hole flat segments diameter D in inlet pipe connection 22223 times, can prevent in this way airflow influence hit before
Jet stream and can allow the flow to be applied on liquid film as far as possible, while can also make air-flow connection straight tube 21 in formed back
Area is flowed, action time and the blending efficiency of air are increased.It is described hit ejector filler 3 outlet end using end face center as symmetric points,
Symmetrical to be provided with 2 inclined holes 31, the intersection points of two inclined holes is located at gas into the connection straight tube 21 of flow tube 2.The folder of two inclined holes 31
Angle α is 65 °.
Further include gasket 4, gasket 4 is located at gas into 21 top of connection straight tube of flow tube 2, ensures nozzle 1 and gas influent stream
The leakproofness of pipe 2.
Workflow
When the nozzle operation, highly viscous liquid is injected from ejector filler 3 is hit, and is sprayed at a high speed by inclined hole 31, two strands
Jet stream can bump against in connection straight tube 21, form liquid film.Air-flow enters from gas into flow tube 2, and airflow direction hangs down with liquid film plane
Direct join acts on liquid film, and the active area of air is very big at this time, aerodynamic to influence strongly, so that liquid film or larger
Particle is further crushed and blends in connection straight tube 21, and air-flow forms recirculating zone in connection straight tube 21, and recirculating zone increases
The action time of air and blending efficiency.Then, air-flow carries droplet particles and enters oscillation chamber.After air-flow enters oscillation chamber,
It is sheared first with the air-flow in oscillation chamber recirculating zone, generates disturbance.Air-flow and disturbance motion are to oscillation chamber near exit shear layer
Separation, disturbance collides the second the front end of the through hole face back reflection of oscillator 14, and is upwardly propagated along separating layer until vibrating chamber
Entrance, when reflected perturbation wave and entry perturbation wave difference integer period, perturbation wave can be applied amplification, and air-flow exists
The higher-order of oscillation occurs in oscillation chamber, to generate prodigious disturbance to droplet particles therein, drop is allow further to be crushed,
Improve atomization quality and subsequent efficiency of combustion.Finally, air-flow carries drop and is sprayed by 14 second through-hole of oscillator, and second
The expansion segment of through-hole expands the spatial distribution of atomization field.
In conclusion the liquid of the present invention successively have passed through shock, pneumatic and three kinds of atomization process of self-oscillation, effectively change
It has been apt to the atomizing effect of highly viscous fluid.It uses four and is distributed in conplane two strands of impinging injectors, enhance shock
The effect of atomization.It is simple in structure, it is easy to implement.
Claims (5)
1. a kind of hit adds self-oscillatory highly viscous fluid two-phase nozzle, it is characterised in that:Including nozzle(1), gas influent stream
Pipe(2)With four shock ejector fillers(3), nozzle(1)One end and gas are into flow tube(2)It is connected, gas is into flow tube(2)It is right on side wall
Claim the first through hole being located at there are four opening on the same horizontal plane, four shock ejector fillers(3)It is logical to be separately fixed at described first
In hole;
The nozzle(1)Including the first straight pipe set gradually(11), collapsible tube(12)With the second straight pipe(13), second is flat
Straight tube(13)With gas into flow tube(2)It is connected, the first straight pipe(11)Diameter be more than collapsible tube(12)The diameter of minimum end face,
First straight pipe(11)Interior separate collapsible tube(12)One end be equipped with oscillator(14), center is equipped with the second through-hole, the second through-hole
Front end face and the first straight pipe(11)Constitute oscillation chamber;
The gas is into flow tube(2)Including connecting straight tube(21)And inlet pipe connection(22), connect straight tube(21)Outer wall is symmetrically opened
There are four the first through hole being located on the same horizontal plane, hit ejector filler for fixed(3);Connect straight tube(21)One end and spray
Mouth(1)It is connected, the other end and inlet pipe connection(22)It is connected, inlet pipe connection(22)Center be provided with it is first straight after expand the
Three through-holes, the flat segments of third through-hole are for connecting air source;
It further include gasket(4), gasket(4)Positioned at gas into flow tube(2)Connection straight tube(21)Top ensures nozzle(1)It is gentle
Body is into flow tube(2)Leakproofness;
The shock ejector filler(3)Outlet end using end face center as symmetric points, be symmetrically provided with 2 inclined holes(31), two inclined holes
Intersection point be located at nozzle(1)Connection straight tube(21)It is interior;
Second through-hole is first straight rear expansion through-hole.
2. according to claim 1 hit adds self-oscillatory highly viscous fluid two-phase nozzle, it is characterised in that:Further include
Trip bolt(15), described to be equipped with oscillator(14)The first straight pipe(11)Side wall is provided with threaded hole, passes through trip bolt
(15)Compress oscillator(14).
3. according to claim 1 hit adds self-oscillatory highly viscous fluid two-phase nozzle, it is characterised in that:Vibrate chamber
Length is Lx, the first straight pipe(11)A diameter of D11, collapsible tube(12)A diameter of D of minimum end face12, D11For D122 ~ 6
Times, Lx D112 ~ 3 times, collapsible tube(12)Angle of throat β be 60 ° ~ 90 °.
4. according to claim 1 hit adds self-oscillatory highly viscous fluid two-phase nozzle, it is characterised in that:Described
The expansion angle of threeway bore expansion section is 30 ° ~ 75 °, connects straight tube(21)A diameter of D21, inlet pipe connection(22)Interior third is logical
A diameter of D of hole flat segments22, D21For D221.5 ~ 3 times.
5. according to claim 1 hit adds self-oscillatory highly viscous fluid two-phase nozzle, it is characterised in that:Described two
A inclined hole(31)Angle be α, α is 45 ° ~ 120 °.
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CN201610248849.XA CN105728219B (en) | 2016-04-20 | 2016-04-20 | A kind of hit adds self-oscillatory highly viscous fluid two-phase nozzle |
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CN110560287A (en) * | 2019-10-15 | 2019-12-13 | 奥来救援科技有限公司 | DC atomizing water gun and water sprayer |
CN114017204A (en) * | 2021-11-05 | 2022-02-08 | 北京航空航天大学 | Ramjet system using energy-containing slurry fuel |
CN114193242A (en) * | 2021-12-22 | 2022-03-18 | 新昌浙江工业大学科学技术研究院 | Polishing method based on self-excited oscillation and force-flow deformation composite effect of polishing solution |
CN115364709A (en) * | 2022-01-28 | 2022-11-22 | 湖南云箭集团有限公司 | High-speed high-pressure atomization mixing process and device for droplet jet printing equipment |
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FR2859650B1 (en) * | 2003-09-12 | 2006-02-24 | Gloster Sante Europ | APPARATUS FOR BRUSTING A LIQUID COMPOSITION |
CN2817908Y (en) * | 2005-08-18 | 2006-09-20 | 公安部上海消防研究所 | Oscillating fine fog nozzle |
CN201015755Y (en) * | 2007-03-12 | 2008-02-06 | 国电科技环保集团山东龙源环保有限公司 | Impact inner-mixing type air bubble atomizing nozzle |
CN102019236B (en) * | 2011-01-04 | 2013-05-01 | 北京航空航天大学 | Self-oscillation jet impact-type nozzle for atomizing complex fluids |
CN103372509B (en) * | 2013-07-05 | 2016-07-06 | 中国航天科技集团公司第六研究院第十一研究所 | A kind of solid tapered effervescent atomizer suitable in high viscosity non-Newtonian fluid |
CN103447185B (en) * | 2013-08-06 | 2015-05-13 | 广东电网公司电力科学研究院 | Dry ice spraying device and dry ice spraying method |
CN203630113U (en) * | 2013-12-11 | 2014-06-04 | 天津开发区合普工贸有限公司 | Fully-closed composite nano aerosol high concentration atomizing experiment device |
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