CN107246610A - A kind of diffusion burner and the buner system including combustion chamber - Google Patents
A kind of diffusion burner and the buner system including combustion chamber Download PDFInfo
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- CN107246610A CN107246610A CN201710362241.4A CN201710362241A CN107246610A CN 107246610 A CN107246610 A CN 107246610A CN 201710362241 A CN201710362241 A CN 201710362241A CN 107246610 A CN107246610 A CN 107246610A
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- air
- pipe
- diffusion
- burner
- heat exchange
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
- F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
- F23D11/102—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber
- F23D11/103—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber with means creating a swirl inside the mixing chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
- F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
- F23D11/105—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet at least one of the fluids being submitted to a swirling motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/40—Mixing tubes or chambers; Burner heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/40—Mixing tubes or chambers; Burner heads
- F23D11/408—Flow influencing devices in the air tube
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The invention provides a kind of diffusion burner and its buner system, the diffusion burner includes transitional cylinder, secondary air cylinder, three air intake transition rings, the transition tube rear end connecting secondary enters one end of air duct, the other end of secondary air cylinder connects the first end of three air intake transition rings, fresh air inlet is set on the transitional cylinder, the secondary air cylinder sets fresh air inlet, and three air intake transition rings set air inlet.The present invention has that efficiency of combustion and volumetric power density are high, igniting is reliable, suitable for a variety of extreme environments, heat utilization efficiency is high the characteristics of.
Description
Technical field
The invention belongs to field of combustion technology, and in particular to a kind of actuating unit assistant starting warmer burning
Device.
Background technology
China is vast in territory, and weather is complicated with terrain environment, and Engines Used In Special Vehicle transmission system faces rubs under environment of extremely trembling with fear
The unfavorable factor such as engine ignition difficulties under the secondary locking of wiping, insufficient lubrication, the decline of storage battery power supply ability and hypobaric, greatly
The big reliability for reducing vehicle.Warmer transmits heat as a kind of combustion heat-exchange device by coolant, can be extreme
The cooling system of vehicle, lubricating system, transmission system, dynamical system etc. are heated under environment, each system is reached most preferably
Working condition, eliminates the unfavorable factor that vehicle launch faces.Meanwhile, the lightweight of vehicle and the adaptation of a variety of extreme environmental conditions
Property proposes high power density to warmer, highly integrated, efficient low-consume, the requirement of high adaptivity.
The problem of existing warmer generally faces efficiency of combustion and power density is low, carbon distribution is serious, and warmer technology is most
The key link is that have to meet stable, the efficient, burner of conflagration.Warmer burning is a complicated physics
And chemical process, the physical dimension of influence factor including combustion chamber and shape, the turbulence intensity of Combustion Flow Field and yardstick, whether there is whirlpool
The distribution of air-fuel ratio, turbulent diffusion blending speed etc. in stream countercurrent zone, oil atomizing position and taper, flow field.Carried on the back based on more than
Scape technology and experimental study, the present invention propose a kind of premixing ignition, diffusion burner system.
The content of the invention
The present invention proposes a kind of premixing ignition, diffusion burner mounting seat and its burner, applied to atomized fuel
In high-tension ignition formula warmer, with efficiency of combustion and volumetric power density are high, igniting is reliable, suitable for a variety of extreme environments,
The characteristics of heat utilization efficiency is high.
Technical scheme：A kind of diffusion burner, the diffusion burner includes transitional cylinder, secondary air cylinder, three air intakes
Transition rings, the transition tube rear end connecting secondary enters one end of air duct, and the other end of secondary air cylinder connects three air intake transition
Fresh air inlet is set on the first end of ring, the transitional cylinder, and the secondary air cylinder sets fresh air inlet, three air intake transition rings
Air inlet is set.
Preferably, diffusion burner transitional cylinder is conical ring, transitional cylinder is circumferentially uniformly distributed some circular holes, as diffusion
Burn main air supply channel.
Preferably, diffusion burner secondary air cylinder two ends are designed for opening, one end is connected with transitional cylinder bigger diameter end,
Diffusion combustion space is formed, the other end is connected with three air intake transition rings bigger diameter ends, as diffusion combustion exhaust passage.
Preferably, the uniform some mozzles of diffusion burner secondary air cylinder outer wall, secondary for diffusion burner
Air intake.
Preferably, secondary air cylinder sets multiple rows of fresh air inlet, the length of secondary air cylinder is L, apart from it is secondary enter
The distance of wind drum inlet is X, and the internal diameter of fresh air inlet is D, D=F1(X) following require, is met：
D’>0,0<=X<L/2；
D’<0,L/2<=X<=L.
D ' is D first order derivative.
Preferably, along transitional cylinder to three air intake transition rings directions, the internal diameter of fresh air inlet is along three air intake transition
Ring entrance is increasing to increased amplitude in the middle of three air intake transition rings, to three air intake mistakes in the middle of three air intake transition rings
Cross the ever-reduced amplitude in ring outlet increasing, meet following require：
D”>0,0<=X<L/2；
D”>0,L/2<=X<=L.
D " is D second derivative.
Preferably, being uniformly provided with some circles on three air intake transition rings minor diameter band of column intermediate altitudes of diffusion burner
Hole, major diameter transition thin plate is circumferentially provided with some through holes, is respectively used to diffusion combustion end and does not exhaust fuel oil burning and diffusion combustion
The tissue and fuel oil for burning chamber interior flow field burn.
A kind of buner system, including burner outer barrel, air feed mounting seat, premixing ignition room and diffusion burner, institute
State premixing ignition room and diffusion burner is arranged in burner outer barrel, air feed mounting seat, premixing ignition room and diffusion combustion
Room is linked in sequence successively, and burner outer barrel first end is connected on the outer wall of mounting bracket in the connection of premixing ignition room one end
Heart ventilating opening, other end connection diffusion burner, diffusion burner tail end connection waste gas flue, the diffusion burner is above
Described diffusion burner.
Preferably, heat exchange core body is arranged in waste gas flue, the heat exchange core body includes pipe and flat tube, the pipe
Flow direction with the flow direction of flat liquid in pipe all perpendicular to waste gas, along the flow direction of waste gas, is sequentially distributed pipe
And flat tube.
Preferably, the multiple scattered heat exchange structures of subsection setup in the pipe, the scattered heat exchange structure includes core body
And shell, the core body is arranged in shell, and the shell is connected with heat exchange inside pipe wall, and the core body is included by some numbers
The grid sheet of amount is arranged in a combination, and connection forms lattice and deletes hole between grid sheet；Along the flow direction of circle tube fluid, pipe
It is interior that multiple scattered heat exchange structures are set, from the entrance of pipe to the outlet of pipe, disperse heat exchange structure length increasingly longer；
From the entrance of pipe to the outlet of pipe, scattered heat exchange structure length increasingly longer amplitude is continuously increased.
Compared with prior art, it is of the invention to have the following advantages：
1) present invention proposes a kind of premixing ignition, diffusion burner, it include air feed mounting seat, premixing ignition room,
Diffusion burner, burner outer barrel, the concentric Series connection welding formation burner of four parts are overall.Atomized fuel is exported and pre-
Mixed combustion chamber eddy flow generation plate is parallel, and partial air enters premixing ignition room, the air of rotational flow and atomization through swirl channel
Fuel oil is sufficiently mixed near atomizer and forms flammable oil-gas gaseous mixture, the burning things which may cause a fire disaster burnt as burner ignition, it is ensured that
Reliable ignition.By part flow arrangement lower floor air vent enter lean premixed combustor air to oil-gas mixed Daqu retardation, and
With fuel oil as much as possible formation oil-gas gaseous mixture, while occurring fray-out of flame phenomenon after avoiding ignition process from terminating, it is
The diffusion combustion stage provides premix gaseous mixture, reduces diffusion combustion stage operating pressure, forms the stable flame source of burner,
Be conducive to flame transmission and the raising of efficiency of combustion.
2) diffusion burner transitional cylinder is designed as outer cone ring, and its diameter gradually increases, and is to coordinate big cone angle atomizer
And the tissue of Combustion Flow Field, increase the contact area of fuel oil and air, reduce the probability that fuel oil adheres to wall, while utilizing transition
The circumferentially disposed some circular holes of cylinder, guiding air-flow increases near the unburned fuel oil of flame inside to burning chamber central zone flowing
Air content, improves the burn rate of fuel oil.
3) some cylindrical mozzles are circumferentially near the axial height of diffusion burner secondary air cylinder 1/2, are entered
The partial air of diffusion combustion air intake passage enters combustion chamber at a high speed through mozzle, and the fuel oil ejected and flame are lifted in upper
Portion space, reduction axial movement speed, increases its holdup time in combustion chamber, is conducive to the abundant burning of fuel oil.
4) three air intake transition rings major diameter transition thin plates of diffusion burner are circumferentially provided with some backflow through hole, into diffusion
Burning air intake passage partial air via through holes flow up, in the fuel oil ejected together with being formed between chamber wall gas
Barrier, it is to avoid fuel oil, which is attached on chamber wall, forms carbon distribution, while being guided in air-flow uphill process by conical ring transitional cylinder, with mistake
The air collective effect that the circumferential air admission hole of cylinder enters is crossed, tumble flow is formed in heart district domain in a combustion chamber, increases the mixing journey of oil-gas
Degree, improves fuel oil efficiency of combustion and burning velocity, is conducive to reducing the axial length needed for fuel oil fully burns, shortens burner
Highly.
5) some circular holes are uniformly provided with three air intake transition rings minor diameter band of column intermediate altitudes of diffusion burner, into expansion
The partial air for dissipating burning air intake passage enters burner ends through this hole, flame movement velocity is reduced, with not yet being fired in flame
Most small part fuel oil mixed combustion, improves the efficiency of combustion of fuel oil.
6) present invention sets residual heat heat-exchanging device in waste gas flue, and the heat exchange core body is pipe-flat tube combined type heat exchange
Structure, heat exchange core body front end uses the tubular heat exchange structure of thin-wall circular, is exchanged heat in heat exchange core body rear end using multiple rows of thin-walled flat pipe type
Structure, in diverse location according to the different film boiling phenomenons using different heat exchange structures, effectively reduction water side, drop of recepting the caloric
The low thermic load of heat exchange core body, improves heat exchange efficiency.
7) heat-exchanger rig of the present invention, heat exchange core body uses tubular heat exchanger tube, and the heat exchanger tube diameter is along cigarette
Flow of air direction is tapered into, and can effectively reduce the film boiling phenomenon of water side, is added water side convection heat transfer intensity, is reduced
The thermic load of heat exchange core body, improves heat exchange efficiency.
8) spacing of the scattered heat exchange structure in heat-exchanger rig of the present invention, pipe with apart from pipe entrance away from
From continuous reduction, the film boiling phenomenon of water side can be effectively reduced, water side convection heat transfer intensity is added, reduces heat exchange core
The thermic load of body, improves heat exchange efficiency.
9) length of the scattered heat exchange structure in heat-exchanger rig of the present invention, pipe with apart from pipe entrance away from
From continuous reduction, the film boiling phenomenon of water side can be effectively reduced, water side convection heat transfer intensity is added, reduces heat exchange core
The thermic load of body, improves heat exchange efficiency.
10) heat-exchanger rig of the present invention, sets grating type to disperse in heat exchange structure, exchange heat pipe in heat exchanger tube
Steam water interface is separated, effectively the film boiling phenomenon of reduction water side, is added water side convection heat transfer intensity, is reduced and change
The thermic load of hot core body, improves heat exchange efficiency.
Brief description of the drawings
Premixing ignition, the front views of the embodiment of diffusion burner a kind of of the Fig. 1 for the present invention；
Fig. 2 is Fig. 1 premixing ignition, the left view of diffusion burner；
For the premixing ignition room whirlwind of the present invention front view of plate occurs for Fig. 3；
For the premixing ignition room whirlwind of the present invention sectional view of plate occurs for Fig. 4；
Fig. 5 is the front view of three layers of air intake transition rings of diffusion burner of the present invention.
Fig. 6 is the top view of three layers of air intake transition rings of diffusion burner of the present invention.
Fig. 7 is air feed mounting seat internal structure schematic diagram of the invention；
Fig. 8 is air feed mounting seat external structure schematic diagram of the invention；
Fig. 9 is a kind of front view of embodiment of the UTILIZATION OF VESIDUAL HEAT IN heat-exchanger rig of the present invention；
Figure 10 is the heat exchange core body water side structure figure of UTILIZATION OF VESIDUAL HEAT IN heat-exchanger rig；
Figure 11 is the heat exchange core body gas side structure figure of UTILIZATION OF VESIDUAL HEAT IN heat-exchanger rig；
Figure 12 is the scattered heat exchange structure cross-sectional structure schematic diagram of UTILIZATION OF VESIDUAL HEAT IN heat-exchanger rig；
Figure 13 is that the scattered heat exchange structure of UTILIZATION OF VESIDUAL HEAT IN heat-exchanger rig arranges schematic diagram in heat exchanger tube；
Figure 14 is another schematic diagram for being arranged in heat exchanger tube of bright scattered heat exchange structure of UTILIZATION OF VESIDUAL HEAT IN heat-exchanger rig.
In figure：1. mounting bracket；Positioning boss 1-1；Flange 1-2；2. burn air feed plectane；2-1 center vents；2-2
Circumferential air vent；3. plate occurs for eddy flow；3-1 centre bores；3-2 swirl channels；Raised 3-3；4. part flow arrangement；5. sleeve；6. mistake
Cross cylinder；7. secondary air cylinder；8. three air intake transition rings；9. muff；10. premix exhaust vent；11. premix air intake
Hole；12. main air supply hole；13. mozzle；14. return port；15. three layers of fresh air inlet；16. flow manifold；17 flues, 18 heat exchange cores
Body, 19 front supports, 20 rear supports, 21 upper cover plates, 22 lower covers, 23 import headers, 24 outlet headers, 25 intermediate members,
26 pipes, 27 outlet pipes, 28 separate heat exchange structure, 29 shells, 30 grid sheets, 31 grate openings, 32 flat tubes, 33 fins, 34 exhausts
Mouthful, 35 exhaust outlets, 36 inner fins.
Embodiment
The embodiment to the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of premixing ignition, diffusion burner, the burner include burner outer barrel, air feed and install bottom
Seat, premixing ignition room and diffusion burner, the air feed mounting seat, premixing ignition room and diffusion burner are sequentially connected in series company
Connect, the premixing ignition room and diffusion burner are arranged in burner outer barrel.
Preferably, the air feed mounting seat includes mounting bracket 1 and burning air feed plectane 2, the mounting bracket 1 the
One end open, the second end sets burning air feed plectane 2, and the centrally disposed center vent 2-1 of the burning air feed plectane 2 is surrounded
The circumferentially disposed circumferential air vent 2-2 of center vent 2-1, premixing ignition room first end connection center vent 2-1, second
End connection diffusion burner, the premixing ignition room includes eddy flow and occurs plate 3, part flow arrangement 4 and sleeve 5, the part flow arrangement 4
It is arranged in concentric circles with sleeve 5, sets eddy flow to occur plate 3 in the part flow arrangement 4, is formed and divided between part flow arrangement 4 and sleeve 3
Runner 16 is flowed, the sleeve 3 extends to the center vent 2-1 of burning air feed plectane 2, and close with center vent 2-1 peripheries
Premix air outlet 10 and premix air inlet 11, the premix air outlet 10 are set on envelope connection, the tube wall of the flow manifold 16
Being arranged on eddy flow occurs between plate 3 and center vent and (is arranged on the front end that plate 3 occurs for eddy flow), the premix air inlet 11
Eddy flow is arranged on to occur between plate 3 and diffusion burner；The diffusion burner include transitional cylinder 6, secondary air cylinder 7, three times
Air intake transition rings 8, described one end of transitional cylinder 6 connects the outer wall of part flow arrangement 4, and other end connecting secondary enters one end of air duct 7, two
It is secondary enter air duct 7 the other end connect the first ends of three air intake transition rings 8, fresh air inlet 12, described two are set on the transitional cylinder 6
It is secondary enter air duct 7 fresh air inlet 13 is set, three air intake transition rings 8 set air inlet 15, and the first end of burner outer barrel 9 connects
On the outer wall for being connected on mounting bracket 1, the second end is connected to the second end of three air intake transition rings 8.
The present invention proposes a kind of premixing ignition, diffusion burner, and it includes air feed mounting seat, premixing ignition room, expanded
Combustion chamber, burner outer barrel are dissipated, the concentric Series connection welding formation burner of four parts is overall.Atomized fuel is exported and premix
Combustion chamber eddy flow generation plate is parallel, and partial air enters premixing ignition room through swirl channel, and air and the atomization of rotational flow are fired
Oil is sufficiently mixed near atomizer and forms flammable oil-gas gaseous mixture, the burning things which may cause a fire disaster burnt as burner ignition, it is ensured that can
By igniting.By part flow arrangement lower floor air vent enter lean premixed combustor air to oil-gas mixed Daqu retardation, and with
Fuel oil formation oil-gas gaseous mixture as much as possible, while occurring fray-out of flame phenomenon after avoiding ignition process from terminating, to expand
Dissipate combustion phases and premix gaseous mixture is provided, reduce diffusion combustion stage operating pressure, form the stable flame source of burner, have
Beneficial to flame transmission and the raising of efficiency of combustion.
Preferably, described mounting bracket 1 is provided with burner positioning boss 1-1, the installation positioning of burner is realized.
Preferably, mounting bracket 1 is the stairstepping cylinder of Diameter Gradual Change, first end face is provided with mounting flange 1-2, uses
In burner axially position, lateral surface is provided with installation fixing lug boss 1-1, circumferentially positioned for being carried out to burner.
Preferably, the inner side of mounting bracket 1 is stepped, gradually tapered up from first end to the second end.So as to be formed efficiently
Quick air inlet effect.
Preferably, mounting bracket 1 have three-level ladder, be respectively from first end to the second end the first order, the second level and
It is tapering transition between the third level, three-level ladder, the internal diameter of three-level ladder is followed successively by：180-190mm, 160-170mm, 135-
145mm
Further preferably, the internal diameter of three-level ladder is followed successively by：186mm、163mm、138mm.
By above-mentioned preferred size, air inlet effect is further improved.
Preferably, fixing lug boss 1-1 is arranged on the step of the second level.
The present invention can be effectively improved into burner by setting the preferred of three-level ladder and three-level step dimension
The flowing velocity of air, exercise intensity of the enhancing air in premixing ignition room and diffusion combustion room, increase air and burning
Contact area.
Preferably, center vent is (3.5-4.5) with circumferential air vent gross area ratio:1；Preferably, 3.7:1.
Preferably, the circumferential air vent 2-2 of burning air feed plectane 2 is using center vent 2-1 centers as the center of circle
Sector structure.
Preferably, circumferential air vent 2-2 asymmetric distributions.
Preferably, circumference air vent 2-2 is provided with 8.Described 8 circumferential air vent 2-2 are asymmetric distribution, specifically
It is distributed as：The circumferential air vent 2-2 of foot area is more than the circumferential air vent 2-2 of other positions.
Preferably, the central angle of 7 fan rings of other positions is identical, the angular interval corresponding to other 7 adjacent fan ring sides
It is identical.
Further preferably, the central angle of adjacent 7 fans ring and angular interval corresponding to adjacent fan ring side are identical, are respectively
19 °, 26 °, another fan ring central angle is 23.5 °, and itself and the adjacent angular interval for fanning ring are 17 °, 30.5 °.
By the setting of the shape of above-mentioned center vent and circumferential air vent, position and its angle, fuel oil can be promoted
Just it is sufficiently mixed in premixing ignition room with air, increases the contact area of air and fuel oil initial stage in atomized fuel motion, carry
The burning velocity of high fuel oil, reduces the pressure in diffusion combustion stage, is conducive to reducing burner axial length demand, reduces burning
Body is accumulated.
Preferably, the center of plate 3, which occurs, for the eddy flow is provided with circular hole 3-1, as atomized fuel entrance, eddy flow is circumferentially with
Passage 3-2, is used as the entrance of combustion air.
Preferably, the swirl channel 3-2 is that occur the 3-2 that cracks on plate in eddy flow to be formed.The seam extends to circular hole
3-1.Further preferably, outwards (the first extreme direction of premixing ignition room) is tilted seam 3-2 side 3-3, is led to so as to form eddy flow
Road.Further preferably, the side 3-3 of the tilting is bending structure, and the bending angle of bending structure is preferably obtuse angle.Preferably
100-120 °, preferably 109 °.Preferably, the external diameter of plate occurs closer to eddy flow for inflection point 3-4.Preferably, inflection point
The distance that with eddy flow the internal diameter of plate 3 occurs for 3-4 is 8-10 times, preferably 9 times with external diameter distance.
Preferably, it is 6mm that front edge of board face, which occurs, for the eddy flow with interplanar spacing where the premix air outlet center of circle of upper strata.
Preferably, seam 3-2 side 3-3 and seam opposite side 3-5 formation triangles.Swirl channel section triangle pair
It is 6 °, 65 ° to answer interior angle.It is 17 ° that with eddy flow plate angle, which occurs, for the side 3-3 of tilting.
Preferably, premix fresh air inlet 11 on part flow arrangement 4 is column structure, to part flow arrangement 4 inside extend.
Preferably, the height of column structure is 3mm.
Preferably, circumferentially have several raised swirl channel 3-2 on the basis of the eddy flow generation centre bore of plate 3,
Channel cross-section is triangle, and depth of section gradually increases along away from spiral board center position.
The present invention is by using the premixing ignition room of Novel structure, and plate occurs for atomized fuel entrance and lean premixed combustor eddy flow
Parallel, partial air enters premixing ignition room through swirl channel, and the air of rotational flow fills with atomized fuel near atomizer
Divide and mix and formed flammable oil-gas gaseous mixture, the burning things which may cause a fire disaster burnt as burner ignition, it is ensured that reliable ignition.
Preferably, diffusion burner transitional cylinder 6 is conical ring, miner diameter end is connected with the outlet of premixing ignition room, as pre-
Mixed combustion flame and diffusion combustion fuel filler.
Preferably, transitional cylinder 6 is circumferential to be uniformly distributed some circular holes 12, as the main air supply channel of diffusion combustion.
Diffusion burner transitional cylinder is designed as outer cone ring, and its diameter gradually increases, be in order to coordinate big cone angle atomizer and
The contact area of the tissue of Combustion Flow Field, increase fuel oil and air, reduces the probability that fuel oil adheres to wall, while utilizing transitional cylinder
Circumferentially disposed some circular holes, guiding air-flow increases the sky near the unburned fuel oil of flame inside to burning chamber central zone flowing
Gas content, improves the burn rate of fuel oil.
Preferably, the two ends of diffusion burner secondary air cylinder 7 are designed for opening, one end connects with the bigger diameter end of transitional cylinder 6
Connect, form diffusion combustion space, the other end is connected with three bigger diameter ends of air intake transition rings 8, as diffusion combustion exhaust passage.
Preferably, the uniform some mozzles 13 of the outer wall of diffusion burner secondary air cylinder 7, for diffusion burner two
Secondary air intake.
Preferably, mozzle 13 is arranged at 1/2 axial height plane of secondary air cylinder 7.
Some fresh air inlets are circumferentially near the axial height of diffusion burner secondary air cylinder 1/2, into diffusion combustion
The partial air of air intake passage enters combustion chamber at a high speed through mozzle, and the fuel oil ejected and flame are lifted in upper space,
Reduction axial movement speed, increases its holdup time in combustion chamber, is conducive to the abundant burning of fuel oil.
Preferably, secondary air cylinder 7 sets multiple rows of fresh air inlet 13.The internal diameter of fresh air inlet is along transitional cylinder 6 to three times
The direction of air intake transition rings 8 first increases to be reduced afterwards.
The length of secondary air cylinder 7 is L, and the distance apart from the entrance of secondary air cylinder 7 is X, and the internal diameter of fresh air inlet is
D, D=F1(X) following require, is met：
D’>0,0<=X<L/2；
D’<0,L/2<=X<=L.
D ' is D first order derivative.
By the change of the internal diameter of above-mentioned air inlet 13, according to the fuel combustion situation of secondary air cylinder 7 so that combustion-supporting
Axially rule changes the flow of wind so that burner combustion reaches optimal efficiency of combustion.
It is found through experiments that, by being arranged such, can further improves efficiency of combustion.
Further preferably, along 6 to three directions of air intake transition rings 8 of transitional cylinder, the internal diameter of fresh air inlet is along three air intakes
The entrance of transition rings 8 is increasing to increased amplitude in the middle of three air intake transition rings 8, to three in the middle of three air intake transition rings 8
It is increasing that secondary air intake transition rings 8 export ever-reduced amplitude, meets following require：
D”>0,0<=X<L/2；
D”>0,L/2<=X<=L.
D " is D second derivative.
It is found through experiments that, by being arranged such, can further improves 10% or so efficiency of combustion.
The fresh air inlet is cylindrical mozzle 13, and mozzle 13 penetrates cylinder outer wall face and connected with diffusion combustion intake adit
It is logical.Preferably, mozzle 13 stretches out wall face height 3mm, internal diameter is 10mm.
Preferably, being uniformly provided with some circles on the minor diameter band of column intermediate altitude of three air intake transition rings of diffusion burner 8
Hole 15, major diameter transition thin plate is circumferentially provided with some through holes 14, is respectively used to diffusion combustion end and does not exhaust fuel oil burning and expand
The tissue and fuel oil for dissipating combustion chamber flow field burn.
The end of three air intake transition rings 8 second (i.e. afterbody, Fig. 1 air-out position) the connection waste gas flue 17, waste gas cigarette
UTILIZATION OF VESIDUAL HEAT IN heat-exchanger rig is set in road, and the UTILIZATION OF VESIDUAL HEAT IN heat-exchanger rig includes heat exchange core body 18, heat exchange core body front supports
19 and heat exchange core body rear supports 20, the heat exchange core body 18, front supports 19 and rear supports 20 are arranged on waste gas flue 17
Interior, the heat exchange core body 18 includes upper cover plate 21, lower cover 22 and Duo Gen heat exchanger tubes, and heat exchanger tube connection is through upper cover plate 21 with
Cover plate 22, the front supports 19 and rear supports 20 are located at the two ends of heat exchange core body 18 respectively, are collectively forming with heat exchange core body 18
The gas wing passage of heat-exchanger rig；The connection heat exchange core body of front supports 1 upper cover plate 21, lower cover 22 and the tube wall of flue 17, institute
State the connection heat exchange core body of rear supports 19 upper cover plate 21, lower cover 22 and the tube wall of flue 17, the front supports 19, rear supports
20th, heat exchange core body cover plate and the tube wall of flue 17 are collectively forming the liquid-inlet header 23 and outlet header 24 of heat-exchanger rig.
Heat-exchanger rig of the present invention, regard tube wall as the import header of heat-exchanger rig and a portion of outlet header
Part, using the import header and outlet header of flue tube wall formation heat-exchanger rig, heat-exchanger rig is integrally all disposed within waste gas cigarette
In road, it is to avoid be separately provided import header and outlet header so that heat-exchanger rig take up space it is few, reduction heat exchange core body volume with
Weight, compact conformation.
Preferably, the front supports 19 and rear supports 20 are tubular structure, the tube wall two ends of front supports 19
Connect lower cover 21,22 and flue tube wall, the tube wall two ends connection lower cover 21,22 and flue tube wall of rear supports 20.
By being arranged such so that the waste gas that front supports 19 and rear supports 20 form heat-exchanger rig exhaust gas side respectively enters
Mouth and waste gas outlet, further such that compact conformation.
Managed preferably, the tube wall of described front supports 19, rear supports 20 connects flue 17 by intermediate member 25
Wall, the intermediate member 25 is the platy structure of bending, as shown in Figure 1.
Preferably, the water inlet pipe (not shown) and outlet pipe 27 of the heat-exchanger rig are separately positioned on the tube wall of flue 17
And it is respectively communicated with import header and outlet header.
Preferably, import header is located at the bottom of flue, outlet header is located at the top of flue.
Preferably, the heat exchanger tube includes pipe 26, the pipe 26 is arranged perpendicular to exhaust gas flow direction, along useless
Flow of air direction, the diameter of pipe 26 is less and less.If being S apart from the distance of exhaust gas entrance, then the internal diameter of pipe is D, if D=
F (S), then F ' (S)<0, F ' (S) is F (S) first order derivative.
Because the waste air temperature at inlet of UTILIZATION OF VESIDUAL HEAT IN heat-exchanger rig is very high, hence in so that the liquid formation carbonated drink in heat exchanger tube
Mixture, and along the flow direction of flue gas, the vapour phase ratio formed in steam water interface is more and more lower, and liquid phase ratio is more next
It is higher.Because the vapour phase ratio of front end is high, therefore the space occupied is necessarily big, therefore passes through the change of pipe diameter so that change
The pipe cross-sectional area of the front end of thermal is big, so that inner space is sufficient for the distribution of liquid phase and meets heat exchanger tube
The requirement of pressure, it is to avoid front portion heat exchange pipe pressure is excessive, so that integrally all heat exchange overpressures are uniform for heat exchange core body, keeps away
Exempt from, the service life of extension heat-exchanger rig excessive with pressure.
Preferably, then F " (S)>0, F " (S) are F (S) second derivatives.I.e. along exhaust gas flow direction, pipe it is straight
The less and less amplitude in footpath is continuously increased.
It is found through experiments that, passes through upper F " (S)>0 setting, can further meet the pressure point in diverse location pipe
Cloth, is further ensured that heat exchange overpressure is evenly distributed.
Preferably, as shown in Figure 10, along the flow direction of flue gas, pipe 26 is set to multiple rows of, and the pipe 26 is
Spacing between shifted structure, the center of circle of adjacent pipe 26 is 1.1-1.3 times of the external diameter of pipe 26.The external diameter of pipe 26 is adjacent two
The average value of root heat exchanger tube external diameter.
Preferably, along exhaust gas flow direction, the diameter of latter row's pipe 26 is the 0.93- of adjacent front-seat pipe diameter
0.98 times.
Above-mentioned proportionate relationship is the optimal proportionate relationship by substantial amounts of experiment.Pass through above-mentioned caliber and spacing
The setting of size, enables to pressure distribution to be optimal.
Preferably, the intake channel of the formation gas of front supports 19 side, the exit passageway of the formation gas of rear supports 20 side.
Preferably, the heat exchanger tube includes, subsection setup in pipe 26, the pipe 26 is multiple to separate heat exchange structure 28,
The separation heat exchange structure 28 includes core body and shell 29, and the core body is arranged in shell 29, the shell 29 and pipe 26
Inwall is connected, and the core body includes the connection between a number of grid sheet 30, grid sheet 30 and forms grate opening 31.
Because EGT is very high so that the flow in pipe can form stream-liquid two-phase flow, the present invention is set in pipe
The scattered heat exchange structure of grid heat exchange, is separated the liquid and gas in two-phase fluid by scattered heat exchange structure, by liquid phase
Small liquid group is dispersed into, by gas phase dispersion into minute bubbles, suppresses the backflow of liquid phase, promotes gas phase smooth outflow, play regime flow
Effect, the effect with vibration and noise reducing.Meanwhile, the present invention is by setting grid to disperse heat exchange structure, equivalent in heat exchanger tube
Inner fin is inside added, heat exchange is enhanced, improves heat transfer effect.
The present invention is because all cross-section locations by gas-liquid two-phase in all heat exchanger tubes are disperseed, so that whole
The contact area of gas-liquid interface and the scattered and cooling wall of gas phase boundary is realized on heat exchange tube section and strengthens disturbance, greatly
Big reduces noise and vibrations, enhances heat transfer.
Preferably, the core body for separating heat exchange structure 28 is to be integrally formed.
Preferably, the core body for separating heat exchange structure 28 is welded by grid sheet 30.
Preferably, preferably, setting intercommunicating pore on the grid sheet 30.Realized by intercommunicating pore between grate opening 31
Connection.
, can be between homogeneous lattice gate hole by setting intercommunicating pore, it is ensured that interconnected between adjacent grate opening
Pressure so that the fluid of high pressure runner flows to low pressure, while it is gentle further to separate liquid phase while flow of fluid
Phase, is conducive to further stablizing two-phase flow.
Preferably, along the flow direction (i.e. Figure 13 short transverse) of fluid in pipe 26, pipe 26 is interior to set many
Individual scattered heat exchange structure 28, from the entrance of pipe to the outlet of pipe, the distance between adjacent scattered heat exchange structure is shorter and shorter.
If being H apart from the distance of pipe entrance, the distance between adjacent scattered heat exchange structure is L, L=F1(H), i.e. L be using height H as
The function of variable, L ' is L first order derivative, meets following require：
L’<0；
Main cause is because the gas in pipe understands carrier's liquid, in uphill process, pipe in uphill process
It is constantly heated, cause the gas in biphase gas and liquid flow more and more, because the vapour phase in stream-liquid two-phase flow is more and more, pipe
Interior exchange capability of heat can increase with vapour phase and weaken relatively, and vibrations and its noise also can constantly increase as vapour phase increases
Plus.Therefore need the distance between the adjacent scattered heat exchange structure of setting shorter and shorter.
In addition, exporting to upper header this section from pipe, because the space of this section becomes big suddenly, the change in space can be led
The quick of gas is caused to flow upwards out and assemble, therefore spatial variations can cause the vapour phase (vapour group) of aggregation to enter cold from pipe position
Aggegation pipe, due to gas (vapour) liquid density contrast, air mass leaves adapter position and will moved rapidly upward, and the former locus of air mass is by gas
The liquid that group pushes away wall also by rapid resilience and hits wall simultaneously, formation impingement phenomenon.Gas (vapour) liquid phase is more discontinuous, gas
Reuniting, collection is bigger, and water hammer energy is bigger.Impingement phenomenon can cause larger noise to shake and mechanical shock, and equipment is caused brokenly
It is bad.Therefore in order to avoid the generation of this phenomenon, the distance between adjacent scattered heat exchange structure now set is shorter and shorter, from
And constantly separate gas phase and liquid phase in fluid delivery process, so as to reduce vibrations and noise to the full extent.
It is found through experiments that, by above-mentioned setting, vibrations and noise can be both reduced to the full extent, while can carry
High heat transfer effect.
Further preferably, from the entrance of pipe 26 to the outlet of pipe 26, the distance between adjacent scattered heat exchange structure is more
It is continuously increased come shorter amplitude.That is S " is S second derivative, meets following require：
L”>0；
It is found through experiments that, by being arranged such, can further reduces by 10% or so vibrations and noise, improves simultaneously
11% or so heat transfer effect.
Preferably, each the length of scattered heat exchange structure 28 keeps constant.
Preferably, in addition to the distance between adjacent scattered heat exchange structure 28, disperseing the other parameters of heat exchange structure
(such as length, caliber) keeps constant.
Preferably, along the short transverse of pipe 26, pipe 26 is interior to set multiple scattered heat exchange structures 28, from pipe 26
Entrance to the outlet of pipe 26, the length for disperseing heat exchange structure 28 is increasingly longer.The length for disperseing heat exchange structure is C, C=
F2(X), C ' is C first order derivative, meets following require：
C’>0；
Further preferably, from the entrance of pipe to the outlet of pipe, the length increasingly longer amplitude of heat exchange structure is disperseed
It is continuously increased.That is C " is C second derivative, meets following require：
C”>0；
The change of the distance between for example adjacent scattered heat exchange structure of specific reason is identical.
Preferably, the distance between adjacent scattered heat exchange structure keeps constant.
Preferably, except the length for disperseing heat exchange structure is outside one's consideration, disperse the other parameters of heat exchange structure (such as between adjacent
Away from, caliber etc.) keep constant.
Preferably, along the short transverse of pipe 26, pipe 26 is interior to set multiple scattered heat exchange structures, from pipe 26
The hydraulic diameter for the grate opening 41 that entrance disperses in heat exchange structure 28 to the outlet of pipe 26, difference is less and less.Disperse to change
The grate opening hydraulic diameter of heat structure is Z, Z=F3(X), Z ' is Z first order derivative, meets following require：
Z’<0；
Preferably, from the entrance of pipe to the outlet of pipe, disperseing the grate opening hydraulic diameter of heat exchange structure increasingly
Small amplitude is continuously increased.I.e.
Z " is Z second derivative, meets following require：
Z”>0。
The change of the distance between for example adjacent scattered heat exchange structure of specific reason is identical.
Preferably, the length of scattered heat exchange structure and the distance of adjacent scattered heat exchange structure keep constant.
Preferably, in addition to disperseing the grate opening hydraulic diameter of heat exchange structure, disperseing the other parameter (examples of heat exchange structure
Such as the distance between length, adjacent scattered heat exchange structure) keep constant.
Further preferably, as shown in figure 13, the inside of pipe 26 sets groove, the shell of the scattered heat exchange structure 28
29 are arranged in groove.
Preferably, the aligning inner of the inwall of shell 29 and pipe 26.Pass through alignment so that on the surface of round tube inner wall face
Reach in approximately the same plane, it is ensured that surface it is smooth.
Preferably, the thickness of shell 29 is less than the depth of groove, round tube inner wall face can be so caused to form groove, from
And carry out augmentation of heat transfer.
Further preferably, as shown in figure 14, pipe 26 is welded for multi-segment structure, and the junction of multi-segment structure, which is set, to be divided
Dissipate heat exchange structure 28.This mode causes being simple to manufacture for the pipe for setting scattered heat exchange structure, cost reduction.
By analysis and experiment learn, disperse heat exchange structure between spacing can not be excessive, it is excessive if cause damping
The effect of noise reduction is bad, while can not be too small, it is too small if cause resistance excessive, similarly, the external diameter of grate opening can not mistake
Big or too small, the effect for also resulting in damping noise reduction is bad or resistance is excessive, therefore the present invention is by substantial amounts of experiment,
Preferentially meet normal flow resistance (total pressure-bearing be below 2.5Mpa, or single pipe on-way resistance be less than or equal to 5Pa/
M in the case of) so that being optimal of damping noise reduction, the optimal relation of parameters has been arranged.
Preferably, the distance between adjacent scattered heat exchange structure is L, the length for disperseing heat exchange structure is C, heat exchanger tube
A diameter of D, the fluid flow area of grate opening is A, the Zhou Changwei Z of the fluid circulation of grate opening, meets following require：
L/C=a-b*LN (D/E)；
E=4*A/Z；
Wherein LN is logarithmic function, and a, b is parameter, wherein 4.9<a<6.1,1.3<b<2.1；
10<D<18mm；
8<C<15mm；
25<L<35mm。
Preferably, 5.4<a<5.8,1.6<b<1.9；
Preferably, a=5.52, b=1.93.
The interval S for wherein disperseing heat exchange structure is with the distance between relative two ends of adjacent scattered heat exchange structure；Before i.e.
Face disperses the distance between the front end of the tail end of heat exchange structure with disperseing heat exchange structure below.Referring specifically to Figure 13 mark.
The diameter D of heat exchanger tube refers to the average value of internal diameter and external diameter.
Preferably, pipe length S is between 140-200mm.Further preferably, between 160-180mm.
By the preferred of the optimal geometric scale of above-mentioned formula, it can realize under the conditions of meeting normal flow resistance,
Damping noise reduction reaches optimum efficiency.
Further preferably, as D/E increase, a constantly reduce, b constantly increases.
For other parameters, the parameter such as tube wall, housing wall thickness is set according to normal standard.
Preferably, whole length direction extension of the grate opening 34 in scattered heat exchange structure 28.That is the length of grate opening 34
Equal to the length of scattered heat exchange structure 28.
, can further augmentation of heat transfer by above-mentioned setting, it is possible to increase heat exchange efficiency.
Preferably, the heat exchange inside pipe wall sets groove, the shell of the scattered heat exchange structure is arranged in groove, institute
State the inwall of shell and the aligning inner of pipe.
Preferably, except the grate opening of the formation of shell 29, remaining grate opening is square.
Preferably, described heat exchanger tube includes pipe 26 and flat tube 32, the pipe 26 is distributed in the front end of flat tube 32.
I.e. along the flow direction of waste gas, pipe 26 and flat tube 32 are sequentially distributed.
Main reason is that exhaust gas entrance side temperature is high, therefore liquid easily seethes with excitement, so that stream-liquid two-phase flow is formed, because
Pipe is shaped as circle, and in the case of identical heat exchange area, pipe circulation area is big so that bearing capacity ability is strong, and
With the heat exchange of flue gas, the flue-gas temperature of rear end is relatively low, therefore can use flat tube, flat tube because being shaped as prolate shape,
Free air space is small, and liquid will not seethe with excitement in rear end, therefore does not need big passage to meet pressure requirements, and flat tube heat-transfer surface
Product is big, so that augmentation of heat transfer.Therefore the distribution of flat tube and pipe is passed through so that pressure distribution is relative on the whole for heat-exchanger rig
Uniformly, it is to avoid it is excessive pressure occur, and exchange capability of heat relative increase.
Preferably, the fluid flow area of single pipe is more than single flat tube.
Preferably, the fluid flow area of single pipe is 2-3 times of single flat tube circulation area.
Preferably, described pipe 26 is positioned on front side of heat exchange core body, pipe 26 is often arranged with multiple rows of and contains multiple pipes
26, adjacent two rows pipe 26 is interspersed.32 points described of flat tube is multiple rows of to be arranged in after heat exchange core body close to pipe heat exchange structure
Side, often arranges and contains multiple flat tubes 32, and the forward and backward one-to-one corresponding of adjacent two rows of flat pipes.
Flow direction of the bearing of trend of flat tube 32 parallel to flue gas.
Preferably, flow direction of the flow direction of liquid all perpendicular to waste gas in the pipe 26 and flat tube 32.
Preferably, setting fin 36 inside flat tube, flow channel for liquids in flat tube is divided into multiple small flow channels.Preferably,
Small flow channels hydraulic diameter in the direction flowed along waste gas, different flat tubes constantly diminishes.If the distance apart from exhaust gas entrance is
S, then the hydraulic diameter of flat tube small flow channels is d, if d=F (S), then F ' (S)<0, F ' (S) is F (S) first order derivative.
Main cause is to need the pressure born less and less in the flow direction along waste gas, flat tube, therefore can be by
Hydraulic diameter diminishes, and by the way that hydraulic radius is diminished, can increase heat exchange area, improves exchange capability of heat.Therefore by upper
The setting of feature is stated, pressure requirements can be both met, augmentation of heat transfer can be realized again.
Preferably, along exhaust gas flow direction, the hydraulic diameter of flat tube small flow channels is continuously increased for d amplitude.That is F "
(S)>0, F " (S) are F (S) second derivatives.
For F " (S)>0, heat transfer effect can be significantly improved, and realize pressure balance.Above-mentioned result is by big
The conclusion that the numerical simulation of amount and experiment are obtained.
Preferably, preferably, the small flow channels hydraulic radius in the direction flowed along liquid, same flat tube constantly becomes
It is small.If being S apart from the distance of exhaust gas entrance, then the hydraulic diameter of flat tube small flow channels is d, if d=F (S), then F ' (S)<0, F '
(S) be F (S) first order derivative.
Preferably, along exhaust gas flow direction, the hydraulic diameter of same flat tube small flow channels is continuously increased for d amplitude.
Then F " (S)>0, F " (S) are F (S) second derivatives.Concrete reason is as above.
Preferably, the small flow channels cross section in flat tube is rectangle, size is 2x4mm.
Preferably, the small flow channels cross section between flat tube is triangle.
Preferably, front supports are hollow side-circle transition structure with rear supports, a side end face is square, side
End face is circle, wherein, the square end surface of front supports is connected and fixed with the side end face of heat exchange core body pipe one, seals, circular
End face at the mounting cylinder rear end face air outlet of anterior combustion chamber with fixing, sealing；The square end surface of rear supports and heat exchange core body are flat
The side end face of pipe one is connected and fixed, seals, and circular end face at aft flange device air outlet with fixing, sealing.
Preferably, described UTILIZATION OF VESIDUAL HEAT IN heat-exchanger rig is arranged in the waste gas flue of burner, preferably warmer
Flue.
Preferably, the waste gas flue 17 is combustion chamber mounting cylinder.
Preferably, the exhaust gas entrance temperature of heat-exchanger rig is 1200-1400 degrees Celsius, preferably 1300 degrees Celsius.Make
To be preferred, front-seat pipe is high temperature resistant stainless steel.
Preferably, the heat-exchanger rig sets exhaust outlet 34,35, the exhaust outlet 34 is arranged on the waste gas cigarette of upper collecting chamber
On the tube wall in road 17, the exhaust outlet 35 is arranged on outlet pipe.Preferably, exhaust outlet 34,35 is automatic according to pressure condition
Exhaust.
Preferred embodiment is illustrated below in conjunction with the accompanying drawings.
Fig. 1 show a kind of premixing ignition, the structural representation of the embodiment of diffusion burner.In the example, point is premixed
Fire, diffusion burner use heat-resisting alloy Steel material, and burner is from front to back by air feed mounting seat, premixing ignition room, diffusion
Combustion chamber, muff are connected form successively from beginning to end.Air feed mounting seat is by mounting bracket 1,2 groups of burning air feed plectane
Into mounting bracket 1 is the stairstepping gradually closed up, and burning air feed plectane 2 is embedded at the lower surface circular hole of mounting bracket 1, under two
End face is coplanar.The center of air feed plectane 2 burn provided with circular vent, the fan loop vent of some non-uniform Distributions is circumferentially with
Hole.Premixing ignition room occurs plate 3, part flow arrangement 4, sleeve 5 by eddy flow and constituted, and is provided with if part flow arrangement 4 divides two layers vertically
Dry air vent, upper strata is premix air outlet 10, and lower floor is premix air inlet 11, and eddy flow occurs plate 3 and is coaxially installed on part flow arrangement
Between two layers of air vent and close to premix air outlet, the part flow arrangement 4 for being provided with eddy flow generation plate 3 is coaxially fixed in sleeve 5,
Bottom surface and the bottom surface of sleeve 5 are coplanar and junction is sealed, and part flow arrangement upper surface is less than sleeve upper surface, part flow arrangement 4 and sleeve 5
Between formed split channel 16.The premixing ignition room front portion of combination is penetrated to be fixed in the centre bore of burning air feed plectane 2.Diffusion combustion
Burn room and constitute 8 by transitional cylinder 6, two floor air intake cylinders 7, three floor air intake transition rings, transitional cylinder 6 is conical ring, if being circumferentially provided with
The dry central shaft circular hole vertical with the conical surface, two layers of air intake cylinder 7 are the cylinder of both ends open, two layers of diameter of air intake cylinder 7 with
The big footpath of transitional cylinder 6 is identical, and its front end face aligns fixation with the rear end face of transitional cylinder 6, is fixed with two layers of intermediate altitude of air intake cylinder 7
Circumferentially distributed hollow flow-guiding pipe 13, and with cylinder outer surface insertion, three layers of air intake transition rings 8 by with two layers of air intake cylinder 7
Transition thin plate with diameter is fixed with two layers of lower surface of air intake cylinder 7, is provided with return port 14 and three layers of fresh air inlet 15.Group
The diffusion burner upper surface of conjunction is fixed with lean premixed combustor lower surface co-axially align.Muff 9 is placed on the confession after combination
Fixed after the aligned coplanar of lower surface outside wind mounting seat, lean premixed combustor and diffusion combustion room, bearing keeps sealing.Burning
Diffusion air intake passage 17 is formed between outdoor cylinder and air feed mounting seat, premixing ignition room, diffusion burner.
Specifically, seeing Fig. 1 and Fig. 2, mounting bracket 1 is the stairstepping cylinder of Diameter Gradual Change, and it is convex that upper surface is provided with installation
Edge, for burner axially position, lateral surface is provided with installation fixing lug boss, circumferentially positioned for being carried out to burner.Install
Support 1 is used to install warmer control system and ignition system, and guiding air-flow flows to entry of combustion chamber, increases its flowing speed
Degree, while being also burn air feed plectane 2 and the carrier of the installation of muff 8.In the present embodiment, mounting bracket internal diameter is successively
For：186mm, 163mm, 138mm, a diameter of 198mm of mounting flange.
Specifically, burning air feed plectane 2 is used for the distribution of air needed for burning, the air for flowing through circular vent enters pre-
Mixed combustion chamber, participates in premixing ignition room ignition phase and the burning in diffusion combustion stage, flows through the sky of fan annular, peripheral air vent
Gas enters diffusion burner, participates in the burning in diffusion combustion stage, it is preferred that circular vent is with fanning ring vent area ratio
3.7:1.The circular ventilation hole peripheral of burning air feed plectane shown in Fig. 22 is provided with guide groove in the present embodiment, facilitates premixing ignition room
Install and fix, 8 radial dimension identicals fan looping pit non-uniform Distribution, it is preferred that 7 adjacent fan ring central angles and interval
Central angle is identical, respectively 19 °, 26 °, and another fan ring central angle is 23.5 °, the angular interval of itself and adjacent fan ring is 17 °,
30.5°。
Specifically, premixing ignition room part flow arrangement 4 is axially arranged two layers of forward and backward corresponding air vent, every layer of air vent
Quantity is 6, and upper strata premix air outlet 10 is used to shunt the air entered by the circular vent of burning air feed plectane 2, shunts air
Enter lower floor through split channel 16 and premix air inlet 11, mix with atomized fuel and block that fuel oil is descending, increase Fuel Air
Incorporation time, improves diffusion combustion stability.Eddy flow is provided between two layers of air vent and occurs plate 3, front edge of board face occurs for eddy flow
It is 6mm with the preferred spacing of plane where the premix air outlet center of circle of upper strata, center is provided with circular hole, as atomized fuel entrance, circumferential
It is the swirl channel of triangle and its normal direction with eddy flow generation plate plane at an angle provided with section, for the shape in igniting chamber
Into eddy flow, Fig. 3 is seen, it is preferred that swirl channel section triangle correspondence interior angle is 6 °, 65 °, and with eddy flow plate folder occurs for section normal direction
Angle is 17 °.The air part entered by the circular vent of burning air feed plectane 2 occurs the swirl channel on plate 3 through eddy flow and entered
Enter rear portion combustion space, the combustion mixture needed for igniting is thoroughly mixed to form with the atomized fuel that enters through center hole.
Specifically, diffusion burner transitional cylinder 6 is conical ring, it is preferred that diameter ratio in front and rear end is 9：13, circumferential circle
Hole number is 16, a diameter of 8mm, is uniformly distributed.Two layers of air intake cylinder 7 are the cylinder of both ends open, diameter with after transitional cylinder
End face diameter is equal, it is preferred that the mozzle being distributed at the height of cylinder axial direction 1/2 provided with contour, and mozzle quantity is 10, water conservancy diversion
Pipe is with the insertion of cylinder outer face and aliging.See Fig. 4, three layers of air intake transition rings 8 are provided with return port 14 and three layers of fresh air inlet 15, used
In connection diffusion air intake passage and diffusion combustion chamber interior, it is preferred that return port 14 and three layers of quantity of fresh air inlet 15 be respectively 8 with
36, diameter is respectively 10mm and 2mm.Air needed for burning enters diffusion air intake passage by the circumferential fan annular distance of fuel oil air feed plectane 2
17, and the mozzle 13 on the circumferential circular hole of transitional cylinder 6, secondary air cylinder 7, the backflow in three layers of air intake transition rings 8 respectively
Hole 14 and three layers of fresh air inlet 15 enter diffusion combustion chamber interior and participate in burning, it is preferred that each layer incoming air area of diffusion burner is accounted for
The ratio of diffusion combustion incoming air area is：44%th, 15%, 35%, 6%.Wherein, the circumferential circular hole of transitional cylinder 6 is diffusion combustion
Main air supply channel, hence into air along conical surface normal direction enter flame inside, the sky on the unburned fuel oil periphery of increase flame inside
Gas content, improves efficiency of combustion.Portion is formed the high-speed air that mozzle 13 on secondary air cylinder 7 enters in a combustion chamber
Airbond, reduces flame axial movement speed, increases fuel oil in the holdup time of combustion chamber while with atomized fuel mixed combustion,
Guarantee is sufficiently mixed and burnt, and this measure advantageously reduces axial length needed for fuel oil burning.Recoiled by return port 14 into combustion
The air of room is burnt, atomized fuel is separated with Inner Wall of Combustion Chamber, attachment probability of the fuel oil in wall is reduced, is conducive to eliminating and accumulates
Carbon, meanwhile, air depends on the transitional cylinder conical surface during up and changes flow direction, with the circumferential air phase entered of transitional cylinder 6
Interaction, tumble flow is formed on the top of secondary air cylinder 7, promotes the mixing and burning of air and unburned fuel oil.By three air intakes
The air that hole 15 enters is in the sluggish flame movement velocity of burner ends, it is ensured that the burning of a small amount of uncombusted fuel oil, improves burning
The efficiency of combustion of device, reduces burning wake flame length, reduces rearmounted heat exchanger thermic load.
Burner operation after assembling is initial, and the atomizer being integrated on warmer pot head assembly ejects the combustion of atomization
Oil, the center hole that fuel oil occurs through eddy flow on plate enters eddy flow and occurs postlaminar part space, while occurring through eddy flow circumferential on plate
The air that the swirl channel of arrangement enters back space is sufficiently mixed with atomized fuel, forms air-fuel mixture necessary to igniting
Gas, and gaseous mixture is lighted by the igniter being integrated on pot head assembly, the nucleus of flame formed needed for burner continuous firing.
After lighting a fire successfully, igniter is stopped, atomizer continuation injection fuel oil, and enter with swirl channel and premix air inlet
Eddy flow occurs what is burnt incompletely in the burning things which may cause a fire disaster that postlaminar part space forms stabilization, premixing ignition room in premixing ignition room after air mixing
Fuel oil continues to diffusion burner internal motion.At the same time, air needed for diffusion combustion is through the circumferential fan of air feed plectane that burns
Shape hole enters split channel, enters diffusion burner by the fresh air inlet of transitional cylinder, secondary air cylinder, three air intake transition rings etc.,
Constantly contact and burn with unburned fuel oil surface in the process, the waste gas of generation is discharged through muff small diameter bore
Burner.
Premixing ignition of the present invention, diffusion burner are applied to the small fuel oil formula combustion heat-exchange devices such as warmer
In, the characteristics of with simple in construction, high combustion efficiency, described premixing ignition cell structure may insure burner various extreme
Reliable ignition under environment burns with stable, and multilayer air inlet diffusion combustion structure is conducive to reducing combustion chamber axial length, improved
The volumetric power density of burner.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to this.Any art technology
Personnel, without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should
It is defined when by claim limited range.
Claims (10)
1. a kind of diffusion burner, the diffusion burner includes transitional cylinder, secondary air cylinder, three air intake transition rings, described
Transition tube rear end connecting secondary enters one end of air duct, and the other end of secondary air cylinder connects the first end of three air intake transition rings,
Fresh air inlet is set on the transitional cylinder, and the secondary air cylinder sets fresh air inlet, and three air intake transition rings set air inlet.
2. diffusion burner according to claim 1, it is characterised in that：Diffusion burner transitional cylinder is conical ring, transition
Cylinder is circumferential to be uniformly distributed some circular holes, as the main air supply channel of diffusion combustion.
3. diffusion burner according to claim 1, it is characterised in that：Diffusion burner secondary air cylinder two ends are to open
Mouth design, one end is connected with transitional cylinder bigger diameter end, forms diffusion combustion space, and the other end and three air intake transition rings bigger diameter ends connect
Connect, as diffusion combustion exhaust passage.
4. diffusion burner according to claim 1, it is characterised in that：Diffusion burner secondary air cylinder outer wall is uniform
Some mozzles, for diffusion burner secondary air.
5. diffusion burner according to claim 1, it is characterised in that：Secondary air cylinder sets multiple rows of fresh air inlet, two
The length of secondary air intake cylinder is L, is X apart from the distance of secondary air drum inlet, the internal diameter of fresh air inlet is D, D=F1(X) it is, full
Foot is following to be required：
D’>0,0<=X<L/2；
D’<0,L/2<=X<=L.
D ' is D first order derivative.
6. diffusion burner according to claim 1, it is characterised in that：Along transitional cylinder to three air intake transition rings sides
To, the internal diameter of fresh air inlet is increasing along three air intake transition rings entrances to three increased amplitudes in air intake transition rings centre,
It is increasing to three ever-reduced amplitudes in air intake transition rings outlet in the middle of three air intake transition rings, meet following require：
D”>0,0<=X<L/2；
D”>0,L/2<=X<=L.
D " is D second derivative.
7. diffusion burner according to claim 1, it is characterised in that：Three air intake transition rings minor diameters of diffusion burner
Some circular holes are uniformly provided with band of column intermediate altitude, major diameter transition thin plate is circumferentially provided with some through holes, are respectively used to diffusion combustion
Burn end and do not exhaust fuel oil burning and tissue and the fuel oil burning of diffusion burner interior flow field.
8. a kind of buner system, including burner outer barrel, air feed mounting seat, premixing ignition room and diffusion burner, described
Premixing ignition room and diffusion burner are arranged in burner outer barrel, air feed mounting seat, premixing ignition room and diffusion burner
It is linked in sequence successively, burner outer barrel first end is connected to premixing ignition room one end connection center on the outer wall of mounting bracket
Ventilating opening, other end connection diffusion burner, diffusion burner tail end connection waste gas flue, the diffusion burner will for right
Seek the diffusion burner described in one of 1-7.
9. buner system according to claim 8, it is characterised in that：Heat exchange core body is arranged in waste gas flue, described
Heat exchange core body includes pipe and flat tube, the flow direction of the flow direction of the pipe and flat liquid in pipe all perpendicular to waste gas,
Along the flow direction of waste gas, pipe and flat tube are sequentially distributed.
10. buner system according to claim 9, it is characterised in that：Subsection setup is multiple in the pipe disperses to change
Heat structure, the scattered heat exchange structure includes core body and shell, and the core body is arranged in shell, in the shell and heat exchanger tube
Wall is connected, and the core body includes being arranged in a combination by a number of grid sheet, and connection forms lattice and deleted between grid sheet
Hole；Along the flow direction of circle tube fluid, multiple scattered heat exchange structures are set in pipe, from entrance the going out to pipe of pipe
Mouthful, disperse heat exchange structure length increasingly longer；
From the entrance of pipe to the outlet of pipe, scattered heat exchange structure length increasingly longer amplitude is continuously increased.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710362241.4A CN107246610B (en) | 2017-05-22 | 2017-05-22 | Diffusion combustion chamber and combustor system comprising same |
| CN201910433531.2A CN110274227B (en) | 2017-05-22 | 2017-05-22 | Combustion air supply circular plate and combustor system thereof |
| CN201910433533.1A CN110260304B (en) | 2017-05-22 | 2017-05-22 | Design method of secondary air inlet cylinder and burner system thereof |
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| CN201710362241.4A CN107246610B (en) | 2017-05-22 | 2017-05-22 | Diffusion combustion chamber and combustor system comprising same |
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| CN201910433531.2A Division CN110274227B (en) | 2017-05-22 | 2017-05-22 | Combustion air supply circular plate and combustor system thereof |
| CN201910433533.1A Division CN110260304B (en) | 2017-05-22 | 2017-05-22 | Design method of secondary air inlet cylinder and burner system thereof |
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| Publication Number | Publication Date |
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| CN107246610A true CN107246610A (en) | 2017-10-13 |
| CN107246610B CN107246610B (en) | 2020-05-12 |
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| CN201910433533.1A Expired - Fee Related CN110260304B (en) | 2017-05-22 | 2017-05-22 | Design method of secondary air inlet cylinder and burner system thereof |
| CN201710362241.4A Expired - Fee Related CN107246610B (en) | 2017-05-22 | 2017-05-22 | Diffusion combustion chamber and combustor system comprising same |
| CN201910433531.2A Expired - Fee Related CN110274227B (en) | 2017-05-22 | 2017-05-22 | Combustion air supply circular plate and combustor system thereof |
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| CN201910433533.1A Expired - Fee Related CN110260304B (en) | 2017-05-22 | 2017-05-22 | Design method of secondary air inlet cylinder and burner system thereof |
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| CN201910433531.2A Expired - Fee Related CN110274227B (en) | 2017-05-22 | 2017-05-22 | Combustion air supply circular plate and combustor system thereof |
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| CN104832920A (en) * | 2015-05-25 | 2015-08-12 | 珠海巴陆信息科技有限公司 | Fuel oil burner and steam boiler with same |
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| EP2940389A1 (en) * | 2014-05-02 | 2015-11-04 | Siemens Aktiengesellschaft | Combustor burner arrangement |
| CN104214774B (en) * | 2014-06-13 | 2017-06-27 | 浙江绍兴世纪能源有限公司 | Low-energy-consumptienvironment-friendlyhigh-precision environment-friendlyhigh-precision burner |
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- 2017-05-22 CN CN201910433533.1A patent/CN110260304B/en not_active Expired - Fee Related
- 2017-05-22 CN CN201710362241.4A patent/CN107246610B/en not_active Expired - Fee Related
- 2017-05-22 CN CN201910433531.2A patent/CN110274227B/en not_active Expired - Fee Related
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| EP1528348B1 (en) * | 2003-10-20 | 2014-03-05 | Behr GmbH & Co. KG | Heat exchanger |
| CN202221145U (en) * | 2011-07-29 | 2012-05-16 | 北京北机机电工业有限责任公司 | Compact type original surface heat exchanger for fuel oil and fuel gas heater |
| CN103115354B (en) * | 2013-02-21 | 2015-08-05 | 北京北机机电工业有限责任公司 | A kind of combined type cyclone combustion chamber |
| CN203274557U (en) * | 2013-04-22 | 2013-11-06 | 南京金典制冷实业有限公司 | Wave-sheet diversion grid type spiral heat exchanger |
| CN204329696U (en) * | 2014-12-08 | 2015-05-13 | 西安交通大学 | Wing thermoexcell in a kind of |
| CN104832920A (en) * | 2015-05-25 | 2015-08-12 | 珠海巴陆信息科技有限公司 | Fuel oil burner and steam boiler with same |
| CN206989194U (en) * | 2017-05-22 | 2018-02-09 | 中国北方车辆研究所 | A kind of diffusion burner and the buner system including combustion chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110274227B (en) | 2021-03-16 |
| CN110274227A (en) | 2019-09-24 |
| CN110260304A (en) | 2019-09-20 |
| CN107246610B (en) | 2020-05-12 |
| CN110260304B (en) | 2021-05-28 |
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