CN106090907B - A kind of strong swirl flame diffusion burner of premix - Google Patents
A kind of strong swirl flame diffusion burner of premix Download PDFInfo
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- CN106090907B CN106090907B CN201610409210.5A CN201610409210A CN106090907B CN 106090907 B CN106090907 B CN 106090907B CN 201610409210 A CN201610409210 A CN 201610409210A CN 106090907 B CN106090907 B CN 106090907B
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- air
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/007—Mixing tubes, air supply regulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/14003—Special features of gas burners with more than one nozzle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/14021—Premixing burners with swirling or vortices creating means for fuel or air
Abstract
The invention discloses a kind of strong swirl flame diffusion burners of premix, and the structure design being classified using center, by combustion box, air pipe line, fuel conduit, cyclone, pre-combustion grade airport, pre-combustion grade nozzle and main combustion stage nozzle are constituted；Air pipe line and combustion box import are using being welded to connect, for guiding air to pass through turbulent burner, into combustion chamber in burn；Fuel gas is fed separately into pre-combustion grade and main combustion stage nozzle by fuel conduit, wherein 25% 40% fuel is injected directly into combustion chamber after entering pre-combustion grade nozzle, it is blended with the pre-combustion grade air for being directly entered combustion chamber by pre-combustion grade airport, is diffused burning；The structure for the strong swirl flame diffusion of premix that the present invention uses, is conducive to expand fired downstream area, increases heating region, to realize the smaller burner of usable floor area, so that it may to heat greater room range, while improve efficiency of combustion, reduce the discharge of pollutant.
Description
Technical field
The present invention relates to turbulent burner, more particularly to a kind of strong swirl flame diffusion burner of premix.
Background technology
The burning of coal, oil, natural gas is the thermal power source of each department of national economy, utilizes this chemistry that burns
Reaction, from the various burners for obtaining thermal energy in fuel are also widely used in various metal smelts, boiler is set
The industry such as standby and scientific experiment and civil field, the structure design of burner is to obtain good combustion effect in burner
Principal element, it determines the ignition performance and the flame distribution in flow field and Temperature Distribution of burner, burning is filled
The safe operation and economic benefit set have very important effect.
At present for boiler plant and large heat exchanger heat source burner, mostly use turbulent burner this
Mechanism designs, this is because it is capable of the mixing of efficient hardening fuel and air and high-temperature combustion product and unburned fuel under
Flow flow field in mixed process, and its formed recirculating zone be it is maximally efficient, can be used as stabilization incendiary source, so
The different fields such as the burning of coal dust and fuel gas and gas turbine are widely used.
Now there are many improvement for being directed to turbulent burner, mostly concentrate on to reducing NOxDischarge and flame stabilization
Some researchs, when the situation for needing the space of combustion heating larger, the methods that the overwhelming majority uses are exactly to increase cyclone combustion
The quantity of burner, if it is possible to design a kind of cyclone head can make in the cyclone structure using reduced size it is very big
The temperature of surface area increases, then can simplify burner, reduces maintenance cost, improves operational efficiency.
Premixed combustion can improve efficiency of combustion, and the local flame intensity of effective enhancing may be used also if it is lean premixed
To reduce NOxDischarge capacity, at the same time, premixed combustion can also expand combustion reaction generation range.
The design concept of center classifying cyclone then derives from the design of combustion chamber in aero-engine, the rotation of center classification
Device head is flowed by changing local equivalent proportion, to solve ignition problem under the small operating mode of aero-engine and smolder in big operating mode
The problem of, and characteristics of flame when it is converted under two kinds of operating modes is also beneficial to the burning of stablizing of downstream flame, if but thinking
Expand combustion range downstream, when being allowed to the promotion for providing wider flow field temperature, should also carry out one to its structure
Fixed improvement.
In conclusion the present invention has used for reference the design philosophy of center classifying cyclone based on practical implementation, design
A kind of burner of the strong swirl flame diffusion of premix passes through cyclone after fuel gas and air adequately premix
Strong eddy flow is formed, recirculating zone can be formed and stablize flame, while expanding fired downstream area, increase heating region, to realize
The smaller burner of usable floor area, so that it may to heat greater room range, while improve efficiency of combustion, reduce the row of pollutant
It puts.
Invention content
The technical problem to be solved by the present invention is to：, heating surface (area) (HS small for existing turbulent burner combustion range is small to be lacked
Point provides a kind of turbulent burner that can provide bigger heated perimeter, and the hydrocyclone structure being classified using center gives full play to pre-
Fire the advantages of grade is for igniting and flame stabilization, fuel gas and air premixed after by cyclone, can be effective
It improves efficiency of combustion, reduce air pollution；The main combustion stage structure design of center classifying cyclone is strong cyclone structure, effective to increase
The subtended angle that big premix gas is spread in downstream, increases combustion range, and pre-combustion grade flame premixes main combustion stage the effect of lighting of gas, together
When can efficiently solve main combustion stage ignition problem.
The technical solution adopted by the present invention to solve the technical problems：A kind of strong swirl flame diffusion burner of premix, is adopted
The structure design being classified with center, it is whole to use stainless steel material, heat is obtained by carrying out burning to gaseous fuel, it is main
Structure includes pre-combustion grade nozzle, cyclone, pre-combustion grade airport and main combustion stage nozzle and combustion box, supply air
Air pipe line, the fuel conduit and electric spark igniter for supplying fuel；Air pipe line by welding with combustion box
Be attached, for guide air pass through turbulent burner, into combustion chamber in burn；Fuel conduit supplies fuel respectively
Enter pre-combustion grade and main combustion stage nozzle；The fuel gas for accounting for total amount 25%-40% enters pre-combustion grade nozzle, is injected directly into burning
In room, the air of 25%-40% is blended by pre-combustion grade airport with fuel in air pipe line, is diffused burning；
Aperture is opened on the tube wall of fuel conduit, main combustion stage nozzle is connected to by welding with fuel conduit, and remaining fuel passes through main combustion stage
Nozzle is first premixed with the air in air pipe line, and the swirl vane passed through on cyclone later enters combustion chamber, is carried out pre-
Mixed burning；The eddy flow that main combustion stage air-flow generates can form recirculating zone and be used for stablizing flame, while strong eddy flow can increase air-flow
The angle of flare in the flow field of downstream expands the distribution area of combustible gas in a combustion chamber, it can be achieved that being with cyclone diameter ratio
It burns in 4-6 times of combustion chamber；Electric spark igniter extend into pre-combustion grade downstream by pre-combustion grade airport and nearby flows
In, electric spark igniter is lighted a fire after pre-combustion grade ignited fuel, and the fuel of main combustion stage is lighted by pre-combustion grade flame transmission,
Realize the startup of burner.
Wherein, the cyclone material is stainless steel, and overall diameter 116-124mm, central part is annular, internal diameter
For 25-29mm, outer diameter 65-75mm；The tapped connection for pre-combustion grade nozzle and fuel conduit of inner cylinder face；Outer circle
There is the prismatic blade that 10-16 is a, thickness is 0.8-1.5mm to be uniformly distributed circumferentially on cylinder, is used to form strong eddy flow, design rotation
Fluxion is 0.8-1.0.
Wherein, the pre-combustion grade airport is located on the center anchor ring of cyclone, and 1-3 is provided on center annular portion
Circulation passage of the through-hole that circle is uniformly distributed circumferentially, direction is consistent with air-flow direction as pre-combustion grade air, effectively
The 25%-40% of area duty gas overall flow rate effective area.
Wherein, the pre-combustion grade nozzle is one end open, the closed pipeline in one end；The outer diameter of open at one end is 25-
29mm, internal diameter 17-21mm, outside are tapped for being attached with cyclone；1-3 are provided on the end face of blind end
Diameter is in the direct perforation of 1-2mm, and 10-16 are provided on its cylindrical surface, and circumferentially distribution, direct projection of the diameter in 1-2mm are small
Hole, opening direction are vertical with airflow direction.
Wherein, the material of the main combustion stage nozzle be stainless steel, be one end open L-type pipeline, outer diameter 6-8mm,
Internal diameter is 2-4mm；Open at one end is connect with the aperture on fuel conduit；It is provided on the cylindrical surface at blind end and airflow direction
Direct projection aperture of the 2-3 vertical diameter in 1-2mm；The height of main combustion stage nozzle is 16-20mm so that outlet direct perforation is in diameter
The middle part in swirler blades channel is directed on position.
Wherein, the material of the fuel conduit is stainless steel, and 10-16 diameter is provided in 2- in its upstream portion
The aperture of 4mm is connected to main combustion stage nozzle, and position of opening need to make the front end of main combustion stage nozzle have 6- apart from the blade of cyclone
10mm；Front end is tapped, can be connect with pre-combustion grade nozzle by cyclone.
Wherein, the material of the air pipe line is stainless steel, and a diameter of 120-130mm is slightly larger than cyclone diameter, leaf
Intercuspal space is 2-4mm, is conducive to prevent from being tempered, while also allowing for installing.
Wherein, the ratio that the pre-combustion grade fuel accounts for total fuel is 25%-40%, and the effective area of pre-combustion grade flowing accounts for
The ratio of overall flow rate effective area is 25%-40%.
Wherein, the leading portion of the combustion chamber is the taper that apex angle is 150 ° -170 °, for reducing the flowing that sudden expansion is brought
Loss.
The operation principle of the present invention：Burner is designed as pre-combustion grade and main combustion stage two by the thought being classified using center
Point, wherein the fuel of 25%-40% burns in pre-combustion grade downstream, and the fuel of 60%-75% carries out in the downstream of main combustion stage
Burning, electric spark igniter then reach pre-combustion grade downstream nearby by pre-combustion grade airport.The fuel of pre-combustion grade is by pre-combustion grade
Nozzle is injected directly into combustion chamber, and pre-combustion grade air is entered by pre-combustion grade airport in combustion chamber, due to pre-combustion grade
Nozzle direction is vertical with air-flow direction, is conducive to the quick blending of fuel and air, and it is after entering combustion chamber to blend
Just occur, so the oil-gas ratio of pre-combustion grade downstream part is high, is conducive to being smoothed out for pre-combustion grade ignition process, once pre-burning
Grade is lighted a fire successfully, the flame successful ignition main combustion stage of pre-combustion grade can be utilized, to realize the burning in entire basin.Main combustion stage is fired
Material is ejected by main combustion stage nozzle in air pipe line to be mixed with air, and mixed combustible gas is formed into cyclone blade is crossed
Strong eddy flow forms expansion air-flow, is ignited by pre-combustion grade into the combustion chamber of a diameter of 4-6 times of turbulent burner diameter, carries out pre-
Mixed burning, realizes the purpose for increasing combustion range in combustion chamber, while may also rely on the recirculating zone that strong eddy flow is formed to stablize
Flame；The center hierarchical structure of fuel gas premix can be effectively reduced the discharge of pollutant；Main combustion stage blade and tube wall it
Between gap can then be effectively prevented main combustion stage and be tempered.
The present invention has the advantage that as follows compared with prior art：
(1) the strong swirl flame diffusion burner of premix of the invention, main combustion stage are designed as strong eddy flow, can be effectively in downstream
The larger expansion flowing of subtended angle is formed, expands the combustion range in cyclone downstream, increases heating surface (area) (HS.
(2) the strong swirl flame diffusion burner of premix of the invention uses the design philosophy of center classification, is conducive to a little
Fire, strong eddy flow can form recirculating zone, and the stabilization for being conducive to burning is conducive to carry along with fuel is adequately premixed with air
High burning efficiency, while the generation of pollutant can also be reduced.
(3) structure type of the strong swirl flame diffusion burner of premix of the invention is simple, and easy to assembly, form of nozzle is easy
In processing, be conducive to the overall structure for simplifying the devices combustion parts such as boiler and storage heater, easy to operation and maintenance is applicable more
Kind gaseous fuel, has very wide fuel autgmentability.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the strong swirl flame diffusion burner of premix of the present invention；
Fig. 2 is a kind of strong integrally-built trimetric drawing of swirl flame diffusion burner of premix of the present invention；
Fig. 3 is the schematic diagram of the pre-combustion grade nozzle of the present invention；
Fig. 4 is the main combustion stage nozzle arrangements schematic diagram of the present invention；
Fig. 5 is the hydrocyclone structure schematic diagram of the present invention；
In figure：1 is pre-combustion grade nozzle, and 2 be cyclone, and 3 be pre-combustion grade airport, and 4 be main combustion stage nozzle, and 5 be combustion chamber
Casing, 6 be air pipe line, and 7 be fuel conduit, and 8 be electric spark igniter, and 9 be the first gasket, and 10 be the second gasket.
Specific implementation mode
Below in conjunction with the accompanying drawings and the present invention is discussed in detail in specific implementation mode.
The flame spread burner of the strong eddy flow of a kind of premix described in the present embodiment as shown in Figure 1, using center classification
Design structure, whole using stainless steel material, wherein combustor section includes：Pre-combustion grade nozzle 1, cyclone 2, pre-combustion grade air
Hole 3 and main combustion stage nozzle 4, and the fuel conduit 7 of supply fuel, the air pipe line 6 for supplying air, start the electrical fire of burner
The casing 5 of the combustion chamber of spark lighter 8 and progress combustion reaction process.Fuel gas is fed to device by fuel conduit 7
In, a part of fuel enters directly into the pre-combustion grade air in combustion chamber and passing through pre-combustion grade airport 3 by pre-combustion grade nozzle 1
It is diffused burning；Remaining fuel is entered by main combustion stage nozzle 4 in air pipe line 6, is first premixed with incoming air,
The blade for passing through cyclone 2 later, strong eddy flow is formed in downstream, is diffused burning, and the recirculating zone that strong eddy flow is formed can be realized
Flame stabilization is formed simultaneously diffusive gas flow, increases the range that combustible gas can reach.Start-up course, that is, ignition process of burner
It is realized by electric spark igniter 8, igniter 8 generates high-temperature region and lights pre-combustion grade fuel, then relies on pre-combustion grade flame transmission point
The combustible gas for firing main combustion stage, realizes the startup of whole device.
As shown in Figure 1, fuel conduit 7 and pre-combustion grade nozzle 1 are connect by screw thread with cyclone 2, combustion is realized
The supply of material is sealed in junction equipped with the first gasket 9 and the second gasket 10, to prevent fuel from leaking；Fuel conduit 7
Upstream end is provided with diameter in the 10-16 hole of 2-4mm being uniformly distributed circumferentially, main combustion stage nozzle 4 by the form of welding with
Aperture connection on fuel conduit 7, the position of aperture circumferential direction should make main combustion stage nozzle 4 be substantially aligned with the center of blade path；
The igniting probe of electric spark igniter 8 reaches 1 downstream of pre-combustion grade nozzle nearby by pre-combustion grade airport 3；Air pipe line 6
Tube wall and the blade of cyclone 2 between there are tip clearances, can also be effectively prevented while being easily installed main combustion stage hair
Raw tempering.
As shown in Fig. 2, air pipe line 6 is attached by welding with combustion box 5, guiding air enters combustion
It burns in room；Taper of the leading portion of combustion box 5 at apex angle at 150 ° -170 °, to reduce the loss that sudden expansion is brought；The burner
It may be implemented to heat the space of 4-5 times of a diameter of burner diameter.
As shown in figure 3,1 one end open of pre-combustion grade nozzle is connected to fuel conduit 7, in addition it is machined with the small of direct projection for one section
Hole；Wherein there are 1-3, diameter in the aperture of 1-2mm on end face, is conducive to the local equivalent for improving pre-combustion grade center flow field
Than being provided with vertical with airflow direction, a diameter of 1-2mm direct projection apertures on cylindrical side, total 10-16 are circumferentially uniformly divided
Fuel ejection is done transverse jet, can accelerate the blending rate of air and fuel by cloth, aperture in air.
As shown in figure 4, cyclone 2 is made of the annular section and blade two parts at center；Blade is in center annular portion
External cylindrical surface on be uniformly distributed circumferentially 10-16, be prismatic blade, thickness 0.8-1.5mm, design swirling number is 0.8-
1.0；It is tapped for connecting on the inner cylinder face of the annular section at center；Pre-combustion grade airport 3 is located at the center of cyclone 2
Annular section encloses the through-hole being circumferentially distributed being provided with 1-3 along the direction that air flows, this design will be in air pipe line
Air be divided into two parts, pre-combustion grade air and main combustion stage air, wherein pre-combustion grade air accounts for total 25%-40%, warp
It crosses pre-combustion grade airport 3 and enters combustion chamber, so the 25%- of the effective area of the through-hole also total effective area of duty flow of air
40%；The installation site of cyclone 2 depends on fuel conduit 7, and the exit end face of cyclone 2 and 6 import of combustion chamber should be made flat
Together.
As shown in figure 5, main combustion stage nozzle 4 is L-type, wherein in addition one end open is opened for one section for being connected to fuel conduit 7
It is used to spray fuel in the direct projection aperture of 1-2mm by 2-3, diameters vertical with air-flow direction, this transverse jet
Form contributes to the quick mixing of air and fuel；The height of nozzle should make outlet be substantially aligned with the center of blade path.
Claims (9)
1. a kind of strong swirl flame diffusion burner of premix, it is characterised in that：The structure design being classified using center, it is whole to use
Stainless steel material obtains heat by carrying out burning to gaseous fuel, and primary structure includes pre-combustion grade nozzle (1), cyclone
(2), pre-combustion grade airport (3) and main combustion stage nozzle (4) and combustion box (5), the air pipe line (6) for supplying air, confession
Answer the fuel conduit (7) and electric spark igniter (8) of fuel；Air pipe line (6) by welding with combustion box (5)
Be attached, for guide air pass through turbulent burner, into combustion chamber in burn；Fuel conduit (7) divides fuel
It Gong Ru not pre-combustion grade nozzle (1) and main combustion stage nozzle (4)；The fuel gas for accounting for total amount 25%-40% enters pre-combustion grade nozzle
(1), it is injected directly into combustion chamber, the air of 25%-40% passes through pre-combustion grade airport (3) and combustion in air pipe line (6)
Material blends, and is diffused burning；Aperture is opened on the tube wall of fuel conduit (7), main combustion stage nozzle (4) passes through welding and combustion
Expects pipe road (7) is connected to, and remaining fuel is first premixed with the air in air pipe line (6) by main combustion stage nozzle (4), later
Enter combustion chamber by the swirl vane on cyclone (2), carries out premixed combustion；The eddy flow that main combustion stage air-flow generates can be formed
Recirculating zone is used for stablizing flame, while strong eddy flow can increase the angle of flare of the air-flow in the flow field of downstream, expands combustible gas and is firing
The distribution area in room is burnt, it can be achieved that burning in cyclone diameter than the combustion chamber for 4-6 times；Electric spark igniter
(8) pre-combustion grade downstream is extend into nearby in flow field by pre-combustion grade airport (3), electric spark igniter (8) igniting is by pre-burning
After grade ignited fuel, the fuel of main combustion stage is lighted by pre-combustion grade flame transmission, realizes the startup of burner.
2. a kind of strong swirl flame diffusion burner of premix according to claim 1, it is characterised in that：The cyclone
(2) material is stainless steel, and overall diameter 116-124mm, central part is annular, internal diameter 25-29mm, outer diameter 65-
75mm；The tapped connection for pre-combustion grade nozzle (1) and fuel conduit (7) of inner cylinder face；There is 10-16 on external cylindrical surface
A, thickness is that the prismatic blade of 0.8-1.5mm is uniformly distributed circumferentially, and is used to form strong eddy flow, and design swirling number is 0.8-
1.0。
3. a kind of strong swirl flame diffusion burner of premix according to claim 1, it is characterised in that：The pre-combustion grade
Airport (3) is located on the center anchor ring of cyclone, be provided on center annular portion 1-3 circle be uniformly distributed circumferentially, direction
Circulation passage of the through-hole consistent with air-flow direction as pre-combustion grade air, effective area duty gas overall flow rate significant surface
Long-pending 25%-40%.
4. a kind of strong swirl flame diffusion burner of premix according to claim 1, it is characterised in that：The pre-combustion grade
Nozzle (1) is one end open, the closed pipeline in one end；The outer diameter of open at one end is 25-29mm, internal diameter 17-21mm, outside
It is tapped to be used to be attached with cyclone (2)；Be provided on the end face of blind end 1-3 diameter 1-2mm direct perforation,
Be provided on its cylindrical surface 10-16 circumferentially distribution, diameter in the direct projection aperture of 1-2mm, opening direction and airflow direction
Vertically.
5. a kind of strong swirl flame diffusion burner of premix according to claim 1, it is characterised in that：The main combustion stage
The material of nozzle (4) is stainless steel, is the L-type pipeline of one end open, outer diameter 6-8mm, internal diameter 2-4mm；Open at one end with
Aperture connection on fuel conduit (7)；The 2-3 diameter vertical with airflow direction is provided on the cylindrical surface at blind end in 1-
The direct projection aperture of 2mm；The height of main combustion stage nozzle (4) is 16-20mm so that outlet direct perforation is directed at eddy flow in radial position
The middle part of device (2) blade path.
6. a kind of strong swirl flame diffusion burner of premix according to claim 1, it is characterised in that：The cartridge
The material on road (7) be stainless steel, its upstream portion be provided with 10-16 diameter 2-4mm aperture and main combustion stage nozzle (4)
Connection, position of opening need to make the front end of main combustion stage nozzle (4) have 6-10mm apart from the blade of cyclone (2)；Front end is tapped with spiral shell
Line can be connect by cyclone (2) with pre-combustion grade nozzle (1).
7. a kind of strong swirl flame diffusion burner of premix according to claim 1, it is characterised in that：The air hose
The material on road (8) be stainless steel, a diameter of 120-130mm, be slightly larger than cyclone (2) diameter, tip clearance 2-4mm, favorably
In preventing from being tempered, while also allowing for installing.
8. a kind of strong swirl flame diffusion burner of premix according to claim 1, it is characterised in that：The pre-combustion grade
The ratio that fuel accounts for total fuel is 25%-40%, and the ratio that the effective area that pre-combustion grade flows accounts for overall flow rate effective area is
25%-40%.
9. a kind of strong swirl flame diffusion burner of premix according to claim 1, it is characterised in that：The combustion chamber
Leading portion be taper that apex angle is 150 ° -170 °, to reduce the flow losses that sudden expansion is brought.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610409210.5A CN106090907B (en) | 2016-06-12 | 2016-06-12 | A kind of strong swirl flame diffusion burner of premix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610409210.5A CN106090907B (en) | 2016-06-12 | 2016-06-12 | A kind of strong swirl flame diffusion burner of premix |
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| CN106090907A CN106090907A (en) | 2016-11-09 |
| CN106090907B true CN106090907B (en) | 2018-07-27 |
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