CN109611835A - A kind of reversed turbulent burner of multi-level gas - Google Patents
A kind of reversed turbulent burner of multi-level gas Download PDFInfo
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- CN109611835A CN109611835A CN201910015818.3A CN201910015818A CN109611835A CN 109611835 A CN109611835 A CN 109611835A CN 201910015818 A CN201910015818 A CN 201910015818A CN 109611835 A CN109611835 A CN 109611835A
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- 239000000446 fuel Substances 0.000 claims abstract description 81
- 239000007921 spray Substances 0.000 claims abstract description 24
- 238000009826 distribution Methods 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 abstract description 28
- 239000008246 gaseous mixture Substances 0.000 abstract description 13
- 239000000567 combustion gas Substances 0.000 abstract description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 description 28
- 238000002156 mixing Methods 0.000 description 8
- 239000012530 fluid Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
A kind of reversed turbulent burner of multi-level gas, including fuel nozzle group and wind-guiding bucket group, the wind-guiding bucket group has specifically included level-one wind-guiding bucket, second level wind-guiding bucket and three-level wind-guiding bucket, the level-one wind-guiding bucket outlet side is equipped with stable flame pan to export level-one rotational flow gas, the second level wind-guiding casing is set to outside level-one wind-guiding bucket and is equipped with several second blades to export second level rotational flow gas, level-one rotational flow gas is contrary with its eddy flow of second level rotational flow gas, which is set to outside second level wind-guiding bucket and is equipped with porous plate to export the straight Gas Jet of high speed；The fuel nozzle group includes primary fuel jet pipe, secondary fuel jet pipe and three-level fuel nozzle, which is located on level-one wind-guiding bucket to spray fuel to level-one rotational flow gas；The secondary fuel jet pipe is located on second level wind-guiding bucket to spray fuel to second level rotational flow gas；The three-level fuel nozzle is located on three-level wind-guiding bucket.The mixability of air and combustion gas is increased substantially, gaseous mixture more evenly, burns more abundant, pollutant emission is lower.
Description
Technical field
The present invention relates to burner arts, especially a kind of reversed turbulent burner of multi-level gas.
Background technique
Energy and environment are related to the most fundamental vital conjuncture of human society, and the industrial revolution is continually advanced anteriorly, the energy
Short supply and environmental pollution become the main problem of human society industrial circle, and there is also huge energy waves at the same time
Take.Gas burner has good pollutant emission characteristic as the key equipment in industrial furnace, compared to coal burner.Together
When environmental consciousness enhancing and environmentally friendly relevant law it is perfect so that improving the emission performance of burner and improving combustion characteristics and make
Efficient operation become people research Important Problems.Different burner structures determine combustion gas and combustion air hybrid mode and
Mixing velocity, and hybrid mode and mixing velocity determine flame mechanism, that is, combustion characteristics of gaseous mixture.
Therefore, designing a kind of burner with high efficiency structure has highly important realistic meaning to industrial furnace or even combustion field
And application value.
Summary of the invention
It is a primary object of the present invention to overcome drawbacks described above in the prior art, a kind of multi-staged air point of improvement is proposed
Match, combustor nozzle arrangement and combustion gas and air reversely rotate the burner structure of hybrid mode.Aim to solve the problem that burner
The problems such as burning, insufficient, fuel energy utilization rate is low, reduces energy waste and the discharge of post-combustion pollution object.
The present invention adopts the following technical scheme:
A kind of reversed turbulent burner of multi-level gas, including fuel nozzle group and wind-guiding bucket group, it is characterised in that: the wind-guiding
Bucket group has specifically included level-one wind-guiding bucket, second level wind-guiding bucket and three-level wind-guiding bucket, which is equipped with stable flame pan
To export level-one rotational flow gas, which is set to outside level-one wind-guiding bucket and is equipped with several second blades to export second level
Rotational flow gas, level-one rotational flow gas is contrary with its eddy flow of second level rotational flow gas, which is set to second level wind-guiding
Bucket it is outer and be equipped with porous plate with export it is accelerated after the straight Gas Jet of high speed；The fuel nozzle group includes primary fuel spray
Pipe, secondary fuel jet pipe and three-level fuel nozzle, the primary fuel jet pipe are located on level-one wind-guiding bucket with to level-one rotational flow gas
Spray fuel；The secondary fuel jet pipe is located on second level wind-guiding bucket to spray fuel to second level rotational flow gas；Three-level fuel spray
Pipe is located on three-level wind-guiding bucket with to high-speed gas injection fuel.
The stable flame pan is cone cell, which is provided with several first blades, which is along the primary fuel jet pipe
Ejection end circle distribution.
The ejection end of the primary fuel jet pipe is equipped with several first spray orifices, which is located at ejection end periphery
And circle distribution.
The section constitution annular of the inlet end of the inlet end of the second level wind-guiding bucket and the three-level wind-guiding bucket.
The ejection end of the secondary fuel jet pipe is equipped with the second spray orifice, which is located at ejection end side and backwards to institute
State level-one wind-guiding bucket.
Several second blades are the opening direction of the second blade and described the around the level-one wind-guiding bucket circle distribution
The opening direction of one blade is opposite.
The inlet end of the inlet end of the level-one wind-guiding bucket and the second level wind-guiding bucket is equipped with varying diameter portion, and the level-one
Wind-guiding bucket is mutually fixed with the three-level wind-guiding bucket.
The three-level wind-guiding bucket inner wall is welded with connecting rod, and connecting rod is equipped with nut；The second level wind-guiding bucket outer wall connects
It is connected to screw rod, which is to be threadedly engaged with nut.
Axis of the ejection end of the three-level fuel nozzle towards the level-one wind-guiding bucket.
The porous plate is equipped with several perforations.
By the above-mentioned description of this invention it is found that compared with prior art, the invention has the following beneficial effects:
1, combustion gas mixes with air bidirectional high-efficiency and stablizes combustion characteristics
Burner primary fuel jet pipe is arranged in stable flame pan center, and primary fuel is sprayed by radial direction, and air flows through surely
Counter-clockwise rotary motion is become from jet stream after flame disk, increases substantially the mixability of air and combustion gas, mixture strength distribution
More uniformly.Compared to jet mixing, rotation mixing causes combustion product fluid to generate reflux, has in terms of stablizing flame combustion
Brilliant advantage.Stable flame pan blade openings angle after this optimization is improving swirl strength while enhancing gaseous mixture mixing uniformity
With flame rigidity, widen that flame is poor to put out boundary.
In second level wind-guiding bucket, secondary fuel jet pipe even circumferential is distributed in front of swirl vane, and injection direction is radial direction,
Fuel jet is mixed after spraying with rear secondary rotating air clockwise, level-one eddy flow and second level eddy flow it is contrary,
Form boundary shear layer, speed first reduces and increases afterwards from outside to inside for gaseous mixture air-flow in shear layer, improves level-one and mixes
The stability of gas burning, while being conducive to the rapid ignition of mixed gas.While fuel and air are mixed,
Under the influence of centrifugal force, the high-temperature product of primary combustion gives secondary gaseous mixture, plays combustion-supporting effect to flows outside, heat transfer
Fruit changes in shear layer velocity reversal, and a high-temperature product is distributed in secondary gaseous mixture periphery, secondary gaseous mixture radially uniform
Homogenous combustion and flame propagation velocity is consistent with air velocity, makes to burn more stable the problems such as overcoming the de- fiery cutoff of burner
And uniformly.
The present invention is by Swirl direction and swirl flow oppositely design concept, so that center gaseous mixture stablizes burning,
Secondary gaseous mixture burns rapidly and uniformity of temperature profile, has effectively highlighted the reversed mixing burner knot of twin-stage proposed by the invention
Structure is in efficiency of combustion, the advantage of fuel burn-off rate and energy saving aspect.
2, there is low NOxPollutant emission characteristic
Natural gas is as a kind of high-efficiency cleaning energy, and easy storage and transport, has thermal efficiency height, dust compared to coal dust
It is low with sulfur dioxide (SO2) emissions, it is widely used in industrial burner.Burner structure proposed by the present invention, air distribution device adjust level-one
Excess air coefficient guarantees that reductions combustion product temperature appropriate is allowed to be evenly distributed while primary fuel full combustion, suppression
Localized hyperthermia processed reduces condition of the nitrogen to conversion of nitrogen oxides, reduces primary combustion NOxGeneration.Secondary wind-guiding bucket
The swirl flow blade of interior arrangement and a swirl vane are reversed, and boundary shear layer drives primary combustion product flow direction to occur
Change, is allowed to be uniformly distributed in secondary gaseous mixture circumferencial direction under continuous rotation flox condition, high-temperature product is lighted rapidly mixed
Gas is closed, since primary combustion product is evenly distributed so that secondary product burning is synchronous and uniformly, under the action of axial velocity, fire
Flame is quickly propagated forward, is shortened combustion product in the high-temperature region residence time, is advantageously reduced NOxGeneration and discharge, increase simultaneously
The degree of filling of strong flame rigidity and flame.For three-level high-velocity jets by fuel gas transmission to flame tail portion, mixture strength is low, and one
Second level high-temperature combustion product lights gaseous mixture, restores imperfect combustion product oxidizing fire by nitrogen oxides simultaneously, has
Effect inhibits NOxGeneration so that burner pollutant emission reduces and meets burning and exhausting standard.
3, the wide Load Regulation of burner
Burner proposed by the invention designs a kind of air distribution mechanism in wind-guiding bucket inlet end.Level-one wind-guiding bucket tail portion and two
Grade wind-guiding bucket tail portion is designed as variable-diameter structure, similar taper, and the angle of the two conical surface and axis is unequal, level-one wind-guiding bucket and three
Grade wind-guiding bucket is fixed, and second level wind-guiding bucket can be moved forward and backward, and second level wind-guiding bucket air through-flow area changes, one, three-level
Wind-guiding bucket air through-flow sectional area is constant, changes auxiliary air coefficient of excess to adjust burner load, burner of the present invention is matched
Wind structure is advantageously implemented wide Load Regulation, meets most as low as the adjusting of maximum load and holding steady operation, does not burn
Device tempering and de- fire, structure is simple, adjusts safe and reliable to operation and easy to maintenance.
Detailed description of the invention
Fig. 1 is perspective view of the present invention；
Fig. 2 is cross-sectional view of the present invention；
Fig. 3 is main view of the present invention；
Fig. 4 is partial sectional view of the present invention；
Wherein 1 is three-level wind-guiding bucket, and 1a, connecting rod, 1b, nut, 2 be three-level fuel nozzle, and 3 be porous plate, 3a, is penetrated
Hole, 4 be second level wind-guiding bucket, and 4a, screw rod, 4b, bearing block, 4c, bearing, 5 be the second blade, and 5a, liner, 6 be secondary fuel spray
Pipe, 6a, the second spray orifice, 7 be stable flame pan, and 7a, the first blade, 8 be primary fuel jet pipe, and 8a, the first spray orifice, 9 be level-one wind-guiding
Bucket, 9a, thin connecting rod.
Specific embodiment
Below by way of specific embodiment, the invention will be further described.
Referring to Fig. 1 to Fig. 4, a kind of reversed turbulent burner of multi-level gas, including fuel nozzle group and wind-guiding bucket group etc., it should
Wind-guiding bucket group includes level-one wind-guiding bucket 9, second level wind-guiding bucket 4 and three-level wind-guiding bucket 1.9 inlet end of level-one wind-guiding bucket, which is equipped with, to be become
Diameter section, similar taper, internal diameter are to be gradually increased or reduce along airintake direction.The outlet side of level-one wind-guiding bucket 9 is equipped with stable flame pan
7, which is cone cell and is equipped with through-hole and several first blade 7a, which is located at 7 middle part of stable flame pan for fuel nozzle
Pass through, the first blade 7a be along the through-hole circle distribution, and the opening direction of the first blade 7a be counterclockwise or clockwise, from
And air-flow is made to export level-one rotational flow gas from stable flame pan 7 through level-one wind-guiding bucket 9, direction is counterclockwise or clockwise.
The second level wind-guiding bucket 4 is sheathed on outside level-one wind-guiding bucket 9, and inlet end also is provided with reducer, similar taper, internal diameter
To be gradually increased or reducing along airintake direction.Several second are additionally provided between 9 outer wall of 4 inner wall of second level wind-guiding bucket and level-one wind-guiding bucket
Blade 5, second blade 5 are around 9 circle distribution of level-one wind-guiding bucket, and second blade 5 and 9 axis of level-one wind-guiding bucket are in a clamp
Angle.The opening direction of second blade 5 is clockwise or counterclockwise, i.e., with the opening direction of the first blade 7a on the contrary, to make
It brings about the desired sensation and flows through the output second level rotational flow gas of second level wind-guiding bucket 4, direction is clockwise or counterclockwise, with level-one rotational flow gas direction
On the contrary.
The three-level wind-guiding bucket 1 is sheathed on outside second level wind-guiding bucket 4, inlet end and the second level wind-guiding bucket 4 of the three-level wind-guiding bucket 1
Section between inlet end is annular.It is fixed with porous plate 3 between 4 outer wall of 1 inner wall of three-level wind-guiding bucket and second level wind-guiding bucket, this is more
Orifice plate 3 is equipped with equally distributed perforation 3a, and the cross-sectional flow area of perforation 3a reduces, according to hydrodynamics flow equation, fluid
After flowing through porous plate 3, the flow velocity of fluid increases.I.e. when gas enters three-level wind-guiding bucket 1 through the perforation 3a output warp on porous plate 3
The straight Gas Jet of high speed after acceleration.
1 inner wall of three-level wind-guiding bucket is welded with the connecting rod 1a radially extended, and the end connecting rod 1a is equipped with nut 1b；Second level is led
4 lateral wall of wind bucket is welded with bearing block 4b, and bearing 4c and screw rod 4a are fixed on bearing block 4b, and the end screw rod 4a passes through bearing 4c
And be interference fitted therewith, screw rod 4b and nut 1b threaded engagement, bearing 4c level fortune is pushed by the rotary motion of screw rod 4b
It is dynamic, and then drive horizontally slipping for second level wind-guiding bucket 4.
The opposite 4 inner wall one end of second level wind-guiding bucket of second blade 5 is i.e. outer to be equipped with liner 5a, and the two is consolidated by way of riveting
Even, liner 5a be low friction coefficient materials, reduce and 4 inner wall of second level wind-guiding bucket between frictional resistance, 5 inner ring of the second blade and
Outer 9 circle of level-one wind-guiding bucket is connected by welding, and 9 end of level-one wind-guiding bucket is solid by thin connecting rod 9a and burner back-end component
Even, thin connecting rod 9a reduces the interference of stream field while guaranteeing bonding strength.
Wind-guiding bucket group of the invention is adjusted air mass flow using air multistage distribution structure, is every grade of fuel with not
With air coefficient guarantee full combustion.The three-level wind-guiding bucket 1 and level-one wind-guiding bucket 9 are relatively fixed, which can
Versus primary wind-guiding bucket 9 and three-level wind-guiding bucket 1 are mobile, since the inlet end of level-one wind-guiding bucket 9 and second level wind-guiding bucket 4 is arranged to become
Diameter section, when second level air duct versus primary wind-guiding bucket 9 is moved forward and backward, the cross-sectional flow area between two reducers will change,
The variation of sectional area changes air mass flow.The cross-sectional flow area of three-level wind-guiding bucket 1 does not occur with the back-and-forth motion of second level air duct
Variation, the i.e. air coefficient of three-level fuel are basically unchanged.
Fuel nozzle group of the invention includes primary fuel jet pipe 8, secondary fuel jet pipe 6 and three-level fuel nozzle 2 etc..
The primary fuel jet pipe 8 is located on level-one wind-guiding bucket 9, and ejection end is equipped with several first spray orifice 8a, several first spray orifice 8a
Positioned at ejection end periphery and circle distribution, to realize Quick uniform mixing to level-one rotational flow gas injection fuel, using this knot
Structure is conducive to improve the contact area of combustion gas and air, enhances the mixability of fuel and air.8 quantity of primary fuel jet pipe
It can be one, two, preferably one；The quantity of first spout not can be uniquely four, eight, ten it is even more.
The secondary fuel jet pipe 6 is located in second level wind-guiding bucket 4, and is located at 5 outside of the second blade.The secondary fuel pipe around
8 circle distribution of primary fuel jet pipe, ejection end are equipped with the second spray orifice 6a, the second spray orifice 6a and are located at ejection end side and backwards one
Grade wind-guiding bucket 9, that is, deviate from the center of circle, realizes Quick uniform mixing to second level rotational flow gas injection fuel, and primary combustion high temperature produces
The combustion-supporting effect of object, the quick full combustion of gaseous mixture.The quantity of the secondary fuel jet pipe 6 is not unique, can be two, four very
To more, the second spray orifice 6a quantity on every secondary fuel jet pipe 6 can be one, two it is even more.
The three-level fuel nozzle 2 is located on three-level wind-guiding bucket 1, and end forms an angle as spray orifice and with axis, spray
The ejection end in hole is directed toward axle center towards the axis of level-one wind-guiding bucket 9.High-velocity fluid after the acceleration of porous plate 3 will fire three times
Material, which is sent to flame end burning-out zone, to burn, and imperfect combustion fuel is carried out full combustion, improves burn-off rate and the combustion of fuel
Burn the disposal of pollutants of product.
The present invention is used cooperatively with fuel delivery means and air transporting arrangement in practical applications, by the burner.Its
In, one, two, three fuel nozzle internal diameter, one, two, three 1 interlude internal diameter of wind-guiding bucket, the opening angle of the first blade 7a, the
The angle of two blades 5 and wind-guiding bucket radial direction, the angle of second level wind-guiding bucket 4 tail portion air distribution mechanism tapered surface and axis, level-one wind-guiding
The angle of 9 tail portion the air distribution mechanism conical surfaces and axis of bucket, 4 front end angle of throat of second level wind-guiding bucket, 1 front end angle of throat of three-level wind-guiding bucket,
Indicate the angle of three-level fuel nozzle 2 injection direction and axis, the ring that second level wind-guiding bucket 4 and 1 air intake of three-level wind-guiding bucket are constituted
Outer diameter, 3 internal diameter of porous plate, 3 outer diameter of porous plate, the parameters such as aperture of porous plate 3 can set according to actual needs.
Applicating example
Burner as shown in Figure 1, including primary fuel jet pipe 8, secondary fuel jet pipe 6, three-level fuel nozzle 2, level-one
Wind-guiding bucket 9, second level wind-guiding bucket 44, three-level wind-guiding bucket 1, porous plate 3, the second blade 5 and stable flame pan 7 etc..Distinguished with R1, R2, R3
It indicates one, two, three fuel nozzle internal diameter, indicates one, two, three wind-guiding bucket interlude internal diameter with R4, R5, R6, use α1It indicates
The opening angle of first blade 7a of stable flame pan 7, uses α2Indicate the second blade 5 and wind-guiding bucket axial direction in second level wind-guiding bucket 4
Angle uses α3The angle for indicating second level wind-guiding bucket 4 tail portion air distribution mechanism tapered surface and axis, uses α4Indicate 9 tail portion of level-one wind-guiding bucket
The angle of the air distribution mechanism conical surface and axis, uses α5It indicates 4 front end angle of throat of second level wind-guiding bucket, uses α6Indicate 1 front end of three-level wind-guiding bucket
Angle of throat uses α7The angle for indicating three-level fuel nozzle 2 nozzle direction and axis, indicates secondary wind-guiding bucket end gas-distributing fan with R7
The three-level air distribution ring outer diameter of structure, indicates 3 internal diameter of porous plate with R8, indicates 3 outer diameter of porous plate with R9, indicates porous plate 3 with R10
Aperture.
In burner shape, length 1000-1200mm, preferably 650mm, diameter 534-600mm.To combustions at different levels
Burn jet pipe and nozzle, R1 17.5mm, nozzle diameter 5-8mm, R2 8.5mm, nozzle diameter 4-6mm, R3 6mm, spray
Outspoken diameter is 3-4mm, and jet pipe thickness is 1.5-2mm, and burner nozzle ends at different levels are connect with natural gas inlet pipe, fuel flow rates at different levels
Individually by throttle valve control, improve the load regulation range of burner, be conducive to accurately burn and it is energy saving.To wind-guidings at different levels
Bucket R4 is 17.5mm, and R5 67mm, R6 265mm, for level-one wind-guiding bucket 9 with a thickness of 1.5mm, 4 thickness of second level wind-guiding bucket is 1.5-
2mm, 1 thickness of three-level wind-guiding bucket is 2mm, wherein wind-guiding bucket at different levels front-end and back-end angle α3It is 150 ° -160 °, preferably 159 °, α4
It is 115-122 °, wherein α2It is 34-40 °, vane thickness 1.5mm, wherein α2It should not be too large, otherwise will cause fluid dynamic energy damage
Lose, reduce flame rigidity and, the angle of throat of wind-guiding bucket at different levels front end is conducive to combustion flame and gathers to central axis and form ratio
More compact petal shape, improves the rigidity of flame, is conducive to the stability of burning, wherein α5It is 28-34 °, preferably 32 °, α6For
25-35 °, preferably 30 °, α7It is 38-45 °, R7 430mm, with a thickness of 2mm, to porous plate 3, R8 380, R9 are
530mm, R10 6mm, aperture is unsuitable much, and small-bore accelerates fluid, and gaseous mixture is sent to flame end and carries out reaction combustion
It burns, improves the burn-off rate of fuel, while carrying out reduction reaction with high temperature pollution product, advantageously reduce the discharge of pollutant.
The above is only a specific embodiment of the present invention, but the design concept of the present invention is not limited to this, all to utilize this
Design makes a non-material change to the present invention, and should all belong to behavior that violates the scope of protection of the present invention.
Claims (10)
1. a kind of reversed turbulent burner of multi-level gas, including fuel nozzle group and wind-guiding bucket group, it is characterised in that: the wind-guiding bucket
Group has specifically included level-one wind-guiding bucket, second level wind-guiding bucket and three-level wind-guiding bucket, the level-one wind-guiding bucket outlet side be equipped with stable flame pan with
Level-one rotational flow gas is exported, which is set to outside level-one wind-guiding bucket and is equipped with several second blades to export second level rotation
Gas body, level-one rotational flow gas is contrary with its eddy flow of second level rotational flow gas, which is set to second level wind-guiding bucket
It is outer and be equipped with porous plate with export it is accelerated after the straight Gas Jet of high speed；The fuel nozzle group include primary fuel jet pipe,
Secondary fuel jet pipe and three-level fuel nozzle, the primary fuel jet pipe are located on level-one wind-guiding bucket to spray to level-one rotational flow gas
Fuel；The secondary fuel jet pipe is located on second level wind-guiding bucket to spray fuel to second level rotational flow gas；The three-level fuel nozzle position
In on three-level wind-guiding bucket with to high-speed gas injection fuel.
2. a kind of reversed turbulent burner of multi-level gas as described in claim 1, it is characterised in that: the stable flame pan is cone
Shape which is provided with several first blades, which is along the primary fuel jet pipe ejection end circle distribution.
3. a kind of reversed turbulent burner of multi-level gas as described in claim 1, it is characterised in that: the primary fuel jet pipe
Ejection end be equipped with several first spray orifices, which is located at ejection end periphery and circle distribution.
4. a kind of reversed turbulent burner of multi-level gas as described in claim 1, it is characterised in that: the second level wind-guiding bucket
The section constitution annular of the inlet end of inlet end and the three-level wind-guiding bucket.
5. a kind of reversed turbulent burner of multi-level gas as described in claim 1, it is characterised in that: the secondary fuel jet pipe
Ejection end be equipped with the second spray orifice, second spray orifice be located at ejection end side and backwards the level-one wind-guiding bucket.
6. a kind of reversed turbulent burner of multi-level gas as claimed in claim 2, it is characterised in that: several second blades
For around the level-one wind-guiding bucket circle distribution, the opening direction of the second blade is opposite with the opening direction of first blade.
7. a kind of reversed turbulent burner of multi-level gas as described in claim 1, it is characterised in that: the level-one wind-guiding bucket
The inlet end of inlet end and the second level wind-guiding bucket is equipped with varying diameter portion, and the level-one wind-guiding bucket and the three-level wind-guiding bucket phase
It is fixed.
8. a kind of reversed turbulent burner of multi-level gas as described in claim 1, it is characterised in that: in the three-level wind-guiding bucket
Wall is welded with connecting rod, and connecting rod is equipped with nut；The second level wind-guiding bucket outer wall is connected with screw rod, and the screw rod and nut are spiral shell
Line cooperation.
9. a kind of reversed turbulent burner of multi-level gas as described in claim 1, it is characterised in that: the three-level fuel nozzle
Ejection end towards the level-one wind-guiding bucket axis.
10. a kind of reversed turbulent burner of multi-level gas as described in claim 1, it is characterised in that: set on the porous plate
There are several perforations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910015818.3A CN109611835B (en) | 2019-01-08 | 2019-01-08 | Multistage gas reverse cyclone burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910015818.3A CN109611835B (en) | 2019-01-08 | 2019-01-08 | Multistage gas reverse cyclone burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109611835A true CN109611835A (en) | 2019-04-12 |
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| CN110388643A (en) * | 2019-07-26 | 2019-10-29 | 合肥工业大学 | The gas-air premixed device of hydrogen-enriched fuel gas combustion with reduced pollutants |
| CN111288448A (en) * | 2020-03-20 | 2020-06-16 | 东营富润智能科技有限公司 | Ultralow nitrogen burner for oil field heating furnace |
| CN111911961A (en) * | 2020-09-02 | 2020-11-10 | 西安交通大学 | Natural gas high-proportion hydrogen-blending combustion burner |
| CN112066371A (en) * | 2020-09-02 | 2020-12-11 | 西安交通大学 | Hydrogen mixes low NOx burner in advance based on flame on duty |
| WO2023103809A1 (en) * | 2021-12-10 | 2023-06-15 | 中国商用飞机有限责任公司 | Bidirectional swirl mixing device for air source system heat exchanger |
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| CN112066371A (en) * | 2020-09-02 | 2020-12-11 | 西安交通大学 | Hydrogen mixes low NOx burner in advance based on flame on duty |
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| CN111911961B (en) * | 2020-09-02 | 2021-07-06 | 西安交通大学 | Natural gas high-proportion hydrogen-blending combustion burner |
| WO2023103809A1 (en) * | 2021-12-10 | 2023-06-15 | 中国商用飞机有限责任公司 | Bidirectional swirl mixing device for air source system heat exchanger |
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