CN106705122B - A kind of nozzle, nozzle array and burner having both inside and outside dilution zone - Google Patents
A kind of nozzle, nozzle array and burner having both inside and outside dilution zone Download PDFInfo
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- CN106705122B CN106705122B CN201611136457.0A CN201611136457A CN106705122B CN 106705122 B CN106705122 B CN 106705122B CN 201611136457 A CN201611136457 A CN 201611136457A CN 106705122 B CN106705122 B CN 106705122B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/38—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising rotary fuel injection means
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Abstract
The present invention provides a kind of nozzle for having both inside and outside dilution zone, for the coaxial arrangement of wave cyclone in outer wall cylinder, middle cylinder is embedded in wave cyclone, and wave cyclone is divided into inner ring cyclone structure and outer ring cyclone structure；Inner ring, outer ring cyclone structure with, middle cylinder, outer wall cylinder surround inside and outside runner, and dilution zone and outer dilution zone in being formed, the flammable mixture of interior outer flow passage are blended in outlet dilution zone.Fuel and air of the invention do not blend before entering nozzle, the flammable mixture of outer dilution zone has rotary motion, flammable mixer is set to form expansion shape flame in jet expansion under the action of the centrifugal force, improve the stability of burning, the combustible of middle cylinder outlet area outflow is the axial movement of irrotationality, it can prevent from forming strong inverse flow area in jet expansion, reduce flow losses, reduce pollutant emission, while there is good combustion stability and the discharge of low pollution object.
Description
Technical field
The present invention relates to burner technical field more particularly to a kind of nozzle, nozzle arrays for having both inside and outside dilution zone
And burner, it is especially suitable for the various industrial burners such as gas turbine, boiler, chemical furnace.
Background technique
Gas turbine is widely used in electric power, aviation, petroleum due to the features such as single machine is small in size and output power
The industries such as work.Due to energy crisis and environmental degradation, it is badly in need of developing high-efficiency cleaning combustion chamber, it is desirable that combustion chamber has igniting can
It leans on, flameholding, the characteristics such as high-efficient and low emission.Current China problem of environmental pollution is extremely serious, and it is clear to develop gas turbine
Clean combustion technology is very urgent.Gas turbine manufacturer has developed a variety of clean-burning technologies, such as poor premixed combustion technology,
Dilute phase premix and pre-evaporation technology, oil-poor direct injection technology and catalytic combustion technology etc., although these technologies can be effectively reduced
The discharge of pollutant, but the problem of all suffer from combustion instability.The one kind developed such as AM General company is fired for liquid fuel
Nitric oxide discharge can be effectively reduced in the radial grading combustion technology of burning.But since main flame stabilization is in shear layer
Low speed edge, shear layer low-speed region nearby can generate periodic vortex shedding, oscillation be also easy to produce near stable point, non-
Combustion instability phenomenon easily occurs when design conditions are run.It is similar with gas turbine burner, other all types of industries burners
It is faced with the contradiction stablized burning with reduce pollutant emission.
Diffusion combustion advantage is that tempering phenomenon, safety coefficient height, stable and reliable operation, additionally will not be generated in operation
Have the advantages that igniting be relatively easy to, in terms of heat load adjustment, thermic load adjustable extent it is wider, the disadvantage is that only by diffusion when burning
Acting on, which makes air contact with each other with combustion gas, chemically reacts, therefore the length of flame of diffusion flame burner is longer, unit volume
Heating strength it is not high.The advantages of premixed combustion is can to reduce dirt by technologies such as poor premixed combustion, dilute phase premix and pre-evaporations
Object discharge is contaminated, due to being pre-mixed for fuel and oxidant, combustion reaction is influenced to neglect substantially by incorporation time scale
Slightly, combustion velocity and flame propagation velocity is greatly improved, the disadvantage is that flame holding is poor, tempering can be brought
It is more prominent that problem is tempered when security hidden trouble, especially fuel flame spread speed are fast, such as burn hydrogen or hydrogen-rich combustion
Material.
Thus, need a kind of burner for having both diffusion combustion and premixed combustion advantage.
Summary of the invention
(1) technical problems to be solved
In order to solve the above problems existing in the present technology, the present invention provides a kind of nozzle for having both inside and outside dilution zone,
Nozzle array and burner.
(2) technical solution
The present invention provides a kind of nozzles for having both inside and outside dilution zone, comprising: middle cylinder, outer wall cylinder, mesh plate and
Wave cyclone；Wherein, the wave cyclone coaxial arrangement is in the outer wall cylinder；The middle cylinder is along the wave
Unrestrained cyclone is axial, is embedded in the wave cyclone by the outlet end of the wave cyclone, and the wave cyclone is divided
At inner ring cyclone structure and outer ring cyclone structure；The outer ring cyclone structure, middle cylinder and outer wall cylinder surround outer flow passage,
The inner ring cyclone structure and middle cylinder surround inner flow passage；The mesh plate is set in middle cylinder, the mesh plate
Dilution zone in being formed between the outlet end of wave cyclone, the interior dilution zone is connected to inner flow passage；The outer wall cylinder,
The outlet end of wave cyclone and middle cylinder surround outer dilution zone, and the outer dilution zone is connected to outer flow passage, the outer wall circle
The part that cylinder protrudes from middle cylinder forms outlet dilution zone；The fuel and air for flowing into inner flow passage are blended into interior dilution zone
Flammable mixture is revolved as first band, the fuel and air for flowing into outer flow passage can as the second band rotation into the blending of outer dilution zone
Burning mixt, first band revolves flammable mixture becomes irrotationality flammable mixture, irrotationality flammable mixture and second after mesh plate
Band rotation flammable mixture is blended in outlet dilution zone.
Preferably, the wave cyclone is circumferentially spaced by the multiple wave crests radially to rise and fall and multiple troughs
Form, the trough circumferentially arranged surrounds inscribed circle, and the wave crest that circumferentially arranges forms circumcircle, the middle cylinder it is straight
Diameter is between inscribed circle diameter and circumscribed circular diameter.
Preferably, partly or entirely the inner ring cyclone structure is trimmed away along axial direction, the upstream of the wave cyclone
Side section forms a cavity, and interior dilution zone is formed between the bottom and mesh plate of the cavity.
Preferably, groove is trimmed out in the outlet end of the wave cyclone.
Preferably, flame flow road on duty is arranged in nozzle axis, and flammable mixture enters on duty from flame on duty fuel inlet
Flame runner.
Preferably, the outer wall cylinder includes outer wall inner cylinder and covers the outer wall sleeve outside outer wall inner cylinder, the outer wall set
Cylinder can axially move, and realize diffusion combustion mode and premixed combustion mode by adjusting the axial position of the outer wall sleeve
Between conversion.
Preferably, high-field electrode housing is arranged in nozzle axis, and high-field electrode is located in high-field electrode housing, high-field electrode
Electric discharge is formed between discharge tip and jet expansion.
Preferably, the ratio of the perforated area of the mesh plate and mesh plate suqare is 40%-80%.
The present invention also provides a kind of nozzle arrays, including multiple said nozzles, wherein the nozzle array is circle
Array, the circular array include P circle nozzle, and every circle nozzle includes Q nozzle, wherein 1≤P, Q≤100；Alternatively, the spray
Mouth array is rectangular array, and the rectangular array includes P row nozzle, and every row nozzle includes Q nozzle, wherein 1≤P, Q≤
100。
The present invention also provides a kind of burners comprising said nozzle or said nozzle array.
(3) beneficial effect
It can be seen from the above technical proposal that nozzle, nozzle array and the burner for having both inside and outside dilution zone of the invention
It has the advantages that
(1) nozzle of the invention, fuel and air do not blend before entering nozzle, the flammable mixture of outer dilution zone
With rotary motion, so that flammable mixer is formed expansion shape flame in jet expansion under the action of the centrifugal force, improve burning
The combustible of stability, the outflow of middle cylinder outlet area is the axial movement of irrotationality, can prevent from forming strong return in jet expansion
Area is flowed, flow losses is reduced, reduces pollutant emission, while there is good combustion stability and the discharge of low pollution object；
(2) some or all of inner ring cyclone structure structure can be trimmed away, and helped to mitigate nozzle weight, be reduced
Flowage friction loss；
(3) outlet end of wave cyclone can trim out groove, help further to mitigate nozzle weight, reduce stream
Dynamic friction loss；
(4) nozzle axis is provided with flame on duty runner, the channel among wave cyclone can be blocked, make air
It is more uniform with fuel blending, improve the combustibility of nozzle；
(5) outer wall cylinder includes outer wall inner cylinder and covers the outer wall sleeve outside outer wall inner cylinder, and outer wall sleeve can be along axial shifting
The advantages of dynamic, nozzle can be converted between two kinds of combustion modes, vdiverse in function, can make full use of different mode, and as far as possible
The shortcomings that avoiding different mode can be adapted for various operating conditions and fuel, improve combustibility；
(6) high-field electrode housing is set in nozzle location mid-shaft, high-field electrode is located in high-field electrode housing, high-voltage electricity
Electric discharge is formed between pole discharge tip and jet expansion, can be used for nozzle igniting, and is conducive to stablize burning, and high
Pressure electrode jacket can block the channel among wave cyclone structure, keep air and fuel blending more uniform, further increase
The combustibility of nozzle.
Detailed description of the invention
Fig. 1 is the semi-cutaway of the nozzle for having both inside and outside dilution zone of the embodiment of the present invention；
Fig. 2 is the top view of nozzle shown in Fig. 1；
Fig. 3 is the three-dimensional figure that nozzle shown in Fig. 1 omits outer wall cylinder；
Fig. 4 is subdivision graph of the Fig. 3 along certain axial position；
Fig. 5 is the scale diagrams of nozzle shown in Fig. 1；
Fig. 6 is the axial dimension schematic diagram of nozzle shown in Fig. 1；
Fig. 7 is that nozzle shown in Fig. 1 trims part inner ring cyclone structure schematic diagram；
Fig. 8 is that nozzle shown in Fig. 1 trims whole inner ring cyclone structure schematic diagrames；
Fig. 9 is the wave cyclone schematic three dimensional views that Fig. 8 show clipping falls whole inner ring cyclone structures；
Figure 10 is the schematic diagram that groove is trimmed on wave cyclone；
Figure 11 is the schematic diagram with flame on duty runner；
Figure 12 is the diffusion combustion mode schematic diagram with outer wall sleeve；
Figure 13 is the premixed combustion mode schematic diagram with outer wall sleeve；
Figure 14 is the nozzle with Plasma Actuator.
[symbol description]
1- middle cylinder entrance；2- outer wall drum inlet；3- outer wall cylinder；4- support cylinder；5- wave cyclone；6-
Middle cylinder；Dilution zone in 7-；8- mesh plate；The outer dilution zone 9-；10- middle cylinder outlet area；11- exports dilution zone；12-
Jet expansion；13- inner ring cyclone structure；The outer ring 14- cyclone structure；15- groove；16- flame on duty fuel inlet；17- is on duty
Flame runner；18- outer wall sleeve；19- plasma electrical source ground terminal；20- plasma electrical source；21- plasma electrical source is high
Pressure side；22- high-field electrode；23- high-field electrode housing；24- high-field electrode discharge tip；25- outer wall inner cylinder.
A- outer wall drum diameter；B- middle cylinder diameter；The inscribed circle diameter of C- wave cyclone；D- middle cylinder is embedding
Enter the depth of wave cyclone；E- mesh plate thickness；Dilution zone height in F-；G- middle cylinder outlet area height；H- mixes outlet
Confounding height.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and join
According to attached drawing, the present invention is described in more detail.
Please refer to figs. 1 to 4, and the embodiment of the invention provides a kind of nozzles for having both inside and outside dilution zone, comprising: intermediate
Cylinder 6, outer wall cylinder 3, mesh plate 8 and wave cyclone structure 5.Wave cyclone structure is located in outer wall cylinder 3, with outer wall circle
Cylinder 3 is coaxially disposed；Wave cyclone structure includes wave cyclone 5 and support cylinder 4, and wave cyclone 5 is by radially rising and falling
Multiple wave crests and multiple troughs are circumferentially spaced forms, the trough circumferentially arranged surrounds inscribed circle, in wave cyclone
5 are centrally formed inscribed space of circles, and the wave crest circumferentially arranged forms circumcircle；The downstream side part mistake of wave cyclone 5
It crosses and is connected to support cylinder 4.Middle cylinder 6 is axial along wave cyclone 5, is revolved by the outlet end insertion wave of wave cyclone 5
Device 5 is flowed, the diameter of middle cylinder 6 is between inscribed circle diameter and circumscribed circular diameter, wave cyclone 5 is divided into interior
Cyclone structure 13 and 14 two parts of outer ring cyclone structure are enclosed, outer ring cyclone structure 14, middle cylinder 6 and outer wall cylinder 3 surround outer
Runner, inner ring cyclone structure 13 and middle cylinder 6 surround inner flow passage.Mesh plate 8 is set in middle cylinder 6, mesh plate 8 with
Dilution zone 7 in being formed between the outlet end of wave cyclone 5, interior dilution zone 7 are connected to inner flow passage, and outer wall cylinder 3 is along downstream side
To middle cylinder 6 is protruded from, outer wall cylinder 3, the outlet end of wave cyclone 5 and middle cylinder 6 surround outer dilution zone 9, mix outside
Confounding 9 is connected to outer flow passage, and the part that outer wall cylinder 3 protrudes from middle cylinder 6 forms outlet dilution zone 11.
The nozzle of the present embodiment, fuel and air do not blend before entering nozzle, and middle cylinder entrance 1 can be combustion
Material entrance is also possible to air intake, and equally, outer wall drum inlet 2 is also possible to fuel inlet or air intake.In order to realize
Fuel and air must be blended into together by burning, and it is interior dilution zone 7, outer blending respectively that there are three dilution zones in the present embodiment
Area 9, outlet dilution zone 11.To be passed through fuel to middle cylinder entrance 1, outer wall drum inlet 2 is passed through for air, fuel by
Middle cylinder entrance 1 enters nozzle, enters wave cyclone 5 through support cylinder 4, part of fuel flows into inner flow passage, and part is fired
Stream enters outer flow passage, and air enters nozzle by outer wall drum inlet 2, and partial air flows into inner flow passage, and partial air flows into outflow
Road, the fuel and air for flowing into inner flow passage, which enter the blending of interior dilution zone 7, becomes band rotation flammable mixture；Flow into the combustion of outer flow passage
Material and air, which enter the blending of outer dilution zone 9, becomes band rotation flammable mixture, and mesh plate 8 plays a role in filtering, interior dilution zone 7
Band rotation flammable mixture after mesh plate 8, filtered, and becomes irrotationality flammable mixture, mixing that irrotationality is flammable by rotary motion
Object is carried out with the band rotation flammable mixture for flowing out outer dilution zone 9 in outlet dilution zone 11 after the outflow of middle cylinder outlet area 10
Blending, and sprayed and burnt by jet expansion 12.In the present invention, since the flammable mixture of outer dilution zone 9 is with rotation fortune
It is dynamic, so that flammable mixer is formed expansion shape flame in jet expansion 12 under the action of the centrifugal force, improves the stability of burning,
The combustible that middle cylinder outlet area 10 flows out is the axial movement of irrotationality, can prevent from forming strong inverse flow in jet expansion
Area reduces flow losses, reduces pollutant emission, therefore nozzle of the invention has good combustion stability simultaneously
It is discharged with low pollution object.When being passed through air to middle cylinder entrance 1, when outer wall drum inlet 2 is passed through fuel, the work of nozzle
Process is similar with the above process, and details are not described herein.
Eddy flow wave device arrival end cross section profile can be circular ring shape or polygonal annular, it is preferably circular；Eddy flow wave device
Outlet end cross section profile can be sinusoidal waveform, square waveform, triangular waveform, the square waveform with rounded corners；Eddy flow wave
The guide line of device is straight line or curve.Inner flow passage and outer flow passage are oblique flow channel, and fuel and air are respectively in wave cyclone
Two sides, can be generated under oblique flow channeling circumferentially aspect rotary motion, fuel and air wave cyclone outlet into
Row blending.Preferably, in the case where oblique flow channel direction of rotation is rotational case counterclockwise, oblique flow channel and axial angular range
It is -90 ° to 0 °, preferably -30 ° to -60 °；Or oblique flow channel direction of rotation be rotate clockwise in the case of, oblique flow channel with
Axial angular range is 0 ° to 90 °, preferably 30 ° to 60 °.
In the present embodiment, referring to FIG. 5, outer wall drum diameter be A (i.e. the circumscribed circular diameter of wave cyclone 5), in
Between drum diameter be B, the inscribed circle diameter of wave cyclone 5 is C, and A > B > C, preferably B=(A+C)/2.Middle cylinder 6
Cross section profile can be circle, triangle, polygon, it is preferably circular.
Referring to FIG. 6, it is 1mm~1000mm that the depth of the insertion wave cyclone 5 of middle cylinder 6, which is D, preferably D=A/2；
Mesh plate thickness E is 1mm~1000mm, preferably E=5mm；Interior dilution zone height F is 1mm~1000mm, preferably F=A/2；In
Between cylinder outlet area height G be 1mm~1000mm, preferably G=A/2；Outlet dilution zone height H is 1mm~1000mm, preferably
H is between 1.5A~3A.
The ratio of perforated area and mesh plate suqare is 0-100% on mesh plate, that is to say, that mesh plate 8 can not be opened
Hole, fuel and air are only blended by outer flow passage, and the ratio of perforated area and mesh plate suqare is 0 on mesh plate at this time；Mesh
Plate 8 can whole apertures, be equivalent to and be not provided with mesh plate, the flammable mixture of such middle cylinder outlet area 10 is also band rotation
Flammable mixed zone, the ratio of perforated area and mesh plate suqare is 100% on mesh plate.It is preferred that perforated area on mesh plate
Ratio with mesh plate suqare is 40%-80%.The diameter in hole is 0.1-10mm on mesh plate, and the size in hole can be identical
It can be different；The shape in hole can be the combination of circle, ellipse, triangle, polygon either these shapes.
The nozzle of second embodiment of the invention, in order to achieve the purpose that brief description, it is any in above-mentioned first embodiment can
The technical characteristic for making same application describes all and in this, without repeating identical narration.
In the embodiment, the part-structure of the inner ring cyclone structure 13 in middle cylinder 6 is trimmed away along axial direction
The upstream part of (referring to Fig. 7), wave cyclone 5 form a cavity, between the bottom and mesh plate 8 of the cavity in formation
Dilution zone facilitates to mitigate nozzle weight in this way, reduces flowage friction loss.The height of the part-structure trimmed between 0~
Between 100%D.After trimming, the position of mesh plate is also accordingly adjusted, and makes interior dilution zone height F 1mm~1000mm, preferably
F=A/2.
Fig. 8 and Fig. 9 are referred to, in the present embodiment, inner ring cyclone structure 13 can all be trimmed, eddy flow wave
Structure only includes outer ring cyclone structure 14, and the upstream part of wave cyclone 5 forms a cavity, the bottom of the cavity and net
Dilution zone in being formed between orifice plate facilitates further to mitigate nozzle weight in this way, reduces flowage friction loss.After trimming,
The position of mesh plate also accordingly adjusts, and makes interior dilution zone height F 1mm~1000mm, preferably F=A/2.
The nozzle of third embodiment of the invention, in order to achieve the purpose that brief description, it is any in any of the above-described embodiment can
The technical characteristic for making same application describes all and in this, without repeating identical narration.
Referring to Figure 10, in this embodiment, groove 15 is trimmed out in the outlet end of wave cyclone 5, facilitate in this way into
One step mitigates nozzle weight, reduces flowage friction loss.
The nozzle of fourth embodiment of the invention, in order to achieve the purpose that brief description, it is any in any of the above-described embodiment can
The technical characteristic for making same application describes all and in this, without repeating identical narration.
Referring to Figure 11, in this embodiment, flame flow road 17 on duty, flame on duty runner 17 are set in nozzle axis
Run through entire nozzle through support cylinder 4, inscribed space of circles, middle cylinder 6 and mesh plate therein 8, is used to form fire on duty
The flammable mixture of flame enters flame on duty runner 17 from flame on duty fuel inlet 16.Flame on duty channel diameter is 1mm
~1000mm, preferably the inscribed circle diameter C of wave cyclone structure, such flame on duty channel can block wave cyclone 5
Intermediate channel, keeps air and fuel blending more uniform, improves the combustibility of nozzle.Flame on duty is preferably spread
Burning.
The nozzle of fifth embodiment of the invention, in order to achieve the purpose that brief description, it is any in any of the above-described embodiment can
The technical characteristic for making same application describes all and in this, without repeating identical narration.
2 and Figure 13 referring to Figure 1, in this embodiment, outer wall cylinder 3 include outer wall inner cylinder 25 and cover in outer wall inner cylinder
Outer wall sleeve 18 outside 25, outer wall inner cylinder 25, wave cyclone structure and the outlet end of middle cylinder 6 are along axial concordant, outer wall set
Cylinder 18 can axially move, and diffusion combustion mode and premixed combustion may be implemented in the axial position by adjusting outer wall sleeve 18
Conversion between mode.Outer wall sleeve shown in Figure 12 18, outer wall inner cylinder 25, wave cyclone structure, middle cylinder 6 outlet end
It is on same plane, nozzle is diffusion combustion mode at this time；The end of outer wall sleeve outlet shown in Figure 13 goes out in middle cylinder 6
The downstream position at mouth end is premixed combustion mode either middle model of the diffusion combustion to premixed combustion transition at this time.Pass through
Outer wall sleeve 18 is set, nozzle of the invention can be converted between two kinds of combustion modes, and it is vdiverse in function, it can make full use of
The advantages of different mode, and the shortcomings that avoid different mode as far as possible, it can be adapted for various operating conditions and fuel, improve burning
Performance.
The nozzle of sixth embodiment of the invention, in order to achieve the purpose that brief description, it is any in any of the above-described embodiment can
The technical characteristic for making same application describes all and in this, without repeating identical narration.
Referring to Figure 14, in this embodiment, high-field electrode housing 23 is set in nozzle location mid-shaft, outside high-field electrode
Set 23 runs through entire nozzle through support cylinder 4, inscribed space of circles, middle cylinder 6 and mesh plate therein 8, high-field electrode 22
In high-field electrode housing 23, high-field electrode housing 23 is insulating materials, and high-field electrode 22 is conductive material；Plasma
Power supply 20 includes plasma electrical source high-voltage end 21 and plasma electrical source ground terminal 19.High-field electrode 22 and plasma electricity
Source high-voltage end 21 is connected；Outer wall cylinder 3 is ground terminal, is connected with plasma electrical source ground terminal 19；High-field electrode discharge tip
It is formed and is discharged between end 24 and jet expansion 12, can be used for nozzle igniting, and be conducive to stablize burning.Outside high-field electrode
Set diameter is 1mm~1000mm, and the preferably inscribed circle diameter C of wave cyclone 5, such high-field electrode housing 23 can block up
The firmly channel among wave cyclone structure, keeps air and fuel blending more uniform, further improves the flammability of nozzle
Energy.
Seventh embodiment of the invention provides a kind of nozzle array comprising spray described in multiple any of the above-described embodiments
Mouth.
Wherein, which is circular array, which includes P circle nozzle, and every circle nozzle includes Q nozzle,
Wherein 1≤P, Q≤100.
Wherein the nozzle array is rectangular array, which includes P row nozzle, and every row nozzle includes Q nozzle,
Wherein 1≤P, Q≤100.
Eighth embodiment of the invention provides a kind of burner comprising any implementation in above-mentioned the first to six embodiment
More spray orifice nozzle arrays described in nozzle described in example or the 7th embodiment.
So far, attached drawing is had been combined the present embodiment is described in detail.According to above description, those skilled in the art
Member should have clear understanding to the present invention.
It should be noted that in attached drawing or specification text, the implementation for not being painted or describing is affiliated skill
Form known to a person of ordinary skill in the art, is not described in detail in art field.In addition, the above-mentioned definition to each element is not
It is only limitted to various specific structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can carry out it simply
Ground change or replacement, such as:
(1) wave cyclone structure can also select other structures；
(2) direction term mentioned in embodiment, such as "upper", "lower", "front", "rear", "left", "right" etc. are only ginsengs
The direction for examining attached drawing, the protection scope being not intended to limit the invention；
(3) above-described embodiment can be based on the considerations of design and reliability, and the collocation that is mixed with each other uses or and other embodiments
Mix and match uses, i.e., the technical characteristic in different embodiments can freely form more embodiments.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of nozzle for having both inside and outside dilution zone characterized by comprising middle cylinder, outer wall cylinder, mesh plate and wave
Cyclone；Wherein,
The wave cyclone coaxial arrangement is in the outer wall cylinder；
The middle cylinder is axial along the wave cyclone, is embedded in the wave eddy flow by the outlet end of the wave cyclone
Device, the wave cyclone are divided into inner ring cyclone structure and outer ring cyclone structure；
The outer ring cyclone structure, middle cylinder and outer wall cylinder surround outer flow passage, the inner ring cyclone structure and middle cylinder
Surround inner flow passage；
The mesh plate is set in middle cylinder, and interior blending is formed between the mesh plate and the outlet end of wave cyclone
Area, the interior dilution zone are connected to inner flow passage；The outer wall cylinder, the outlet end of wave cyclone and middle cylinder surround outer mix
Confounding, the outer dilution zone are connected to outer flow passage, and the part that the outer wall cylinder protrudes from middle cylinder forms outlet dilution zone；
The fuel and air for flowing into inner flow passage, which enter the blending of interior dilution zone, becomes first band rotation flammable mixture, flows into outer flow passage
Fuel and air, which enter the blending of outer dilution zone, becomes the second band rotation flammable mixture, and first band revolves flammable mixture after mesh plate
As irrotationality flammable mixture, irrotationality flammable mixture and the second band rotation flammable mixture are blended in outlet dilution zone；
Wave cyclone is formed by the multiple wave crests radially to rise and fall and multiple troughs are circumferentially spaced, is circumferentially arranged
Trough surrounds inscribed circle, is centrally formed inscribed space of circles in wave cyclone, and the wave crest circumferentially arranged forms circumcircle；
The diameter of middle cylinder is between inscribed circle diameter and circumscribed circular diameter.
2. nozzle as described in claim 1, which is characterized in that the wave cyclone by multiple wave crests for radially rising and falling and
Multiple troughs are circumferentially spaced to be formed, and the trough circumferentially arranged surrounds inscribed circle, and the wave crest circumferentially arranged forms outer
The diameter of the circle of contact, the middle cylinder is between inscribed circle diameter and circumscribed circular diameter.
3. nozzle as described in claim 1, which is characterized in that the part or all of inner ring cyclone structure is trimmed to about along axial direction
Fall, the upstream part of the wave cyclone forms a cavity, and interior blending is formed between the bottom and mesh plate of the cavity
Area.
4. nozzle as described in claim 1, which is characterized in that trim out groove in the outlet end of the wave cyclone.
5. nozzle as described in claim 1, which is characterized in that flame flow road on duty is arranged in nozzle axis, is used to form on duty
The flammable mixture of flame enters flame on duty runner from flame on duty fuel inlet.
6. nozzle as described in claim 1, which is characterized in that the outer wall cylinder includes outer wall inner cylinder and covers in outer wall inner cylinder
Outer outer wall sleeve, the outer wall sleeve can axially move, and realize diffusion by adjusting the axial position of the outer wall sleeve
Conversion between combustion mode and premixed combustion mode.
7. nozzle as described in claim 1, which is characterized in that high-field electrode housing is arranged in nozzle axis, and high-field electrode is located at
In high-field electrode housing, electric discharge is formed between high-field electrode discharge tip and jet expansion.
8. nozzle as described in claim 1, which is characterized in that the perforated area of the mesh plate and the ratio of mesh plate suqare
For 40%-80%.
9. a kind of nozzle array, which is characterized in that including nozzle described in multiple any one of claims 1 to 8 claims,
Wherein,
The nozzle array is circular array, and the circular array includes P circle nozzle, and every circle nozzle includes Q nozzle, wherein 1
≤P,Q≤100；Alternatively,
The nozzle array is rectangular array, and the rectangular array includes P row nozzle, and every row nozzle includes Q nozzle, wherein 1
≤P、Q≤100。
10. a kind of burner, which is characterized in that it includes nozzle described in any one of claim 1-8 claim, or
Nozzle array as claimed in claim 9.
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| CN201611136457.0A CN106705122B (en) | 2016-12-09 | 2016-12-09 | A kind of nozzle, nozzle array and burner having both inside and outside dilution zone |
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| CN201611136457.0A CN106705122B (en) | 2016-12-09 | 2016-12-09 | A kind of nozzle, nozzle array and burner having both inside and outside dilution zone |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107366929B (en) * | 2017-07-20 | 2020-03-17 | 中国科学院工程热物理研究所 | Nozzle with divergent profile swirler |
| CN108204604B (en) * | 2018-03-13 | 2023-05-23 | 中国航空发动机研究院 | Combustion chamber multi-stage swirl nozzle with periodically varying outlet structure |
| CN110160083B (en) * | 2019-05-24 | 2020-08-18 | 西安航天动力研究所 | Gas-gas mixing flame stabilizer |
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| US5235813A (en) * | 1990-12-24 | 1993-08-17 | United Technologies Corporation | Mechanism for controlling the rate of mixing in combusting flows |
| US5638675A (en) * | 1995-09-08 | 1997-06-17 | United Technologies Corporation | Double lobed mixer with major and minor lobes |
| CN103988020A (en) * | 2011-12-12 | 2014-08-13 | 西门子公司 | Fuel injector for two combustible materials |
| CN105674263A (en) * | 2016-02-23 | 2016-06-15 | 中国科学院工程热物理研究所 | Nozzle with mixing combustion stabilizing structures, nozzle array and combustor |
| CN105757716A (en) * | 2016-02-22 | 2016-07-13 | 中国科学院工程热物理研究所 | Nozzle for premixed combustion, nozzle array and combustor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5235813A (en) * | 1990-12-24 | 1993-08-17 | United Technologies Corporation | Mechanism for controlling the rate of mixing in combusting flows |
| US5638675A (en) * | 1995-09-08 | 1997-06-17 | United Technologies Corporation | Double lobed mixer with major and minor lobes |
| CN103988020A (en) * | 2011-12-12 | 2014-08-13 | 西门子公司 | Fuel injector for two combustible materials |
| CN105757716A (en) * | 2016-02-22 | 2016-07-13 | 中国科学院工程热物理研究所 | Nozzle for premixed combustion, nozzle array and combustor |
| CN105674263A (en) * | 2016-02-23 | 2016-06-15 | 中国科学院工程热物理研究所 | Nozzle with mixing combustion stabilizing structures, nozzle array and combustor |
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| Publication number | Publication date |
|---|---|
| CN106705122A (en) | 2017-05-24 |
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