CN109237512A - A kind of altitude environment self-adapting pipe heat exchange type method for controlling combustion - Google Patents
A kind of altitude environment self-adapting pipe heat exchange type method for controlling combustion Download PDFInfo
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- CN109237512A CN109237512A CN201810940961.9A CN201810940961A CN109237512A CN 109237512 A CN109237512 A CN 109237512A CN 201810940961 A CN201810940961 A CN 201810940961A CN 109237512 A CN109237512 A CN 109237512A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
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Abstract
The present invention relates to a kind of altitude environment self-adapting pipe heat exchange type method for controlling combustion.Its technical solution is: passing through the oil mass air quantity for burning required under theoretical calculation analysis altitude environment, environmental data is collected by atmospheric pressure and temperature sensor, substitute into theoretical model, its efficient burning under Different Altitude altitude environment is controlled according to suitable air-fuel ratio regulation air inflow, and by novel combustion head and the double air intake passage intakes of adjusting.Beneficial effect is: adapting to high altitude environment, it is flowed back certainly by flue gas in the steady flame of banking fire plate and porous burner cylinder, it can guarantee that highlands burned flame length will not be too long, reduce pollutant emission, meet the efficient burning under altitude environment in pipeline and externally heat exchange.In addition, acquiring ambient air data in real time for the variation of adaptation plateau atmospheric pressure and taking binary channels to enter the wind according to invariable power amount of fuel and atmospheric pressure elevation data, is conducive to adjusting intake and meets required air capacity of burning under altitude environment.
Description
Technical field
The present invention relates to a kind of burner of altitude environment and method, in particular to a kind of altitude environment is adaptively managed
Road heat exchange type method for controlling combustion.
Background technique
With the national economic development, energy consumption rises year by year, wherein the energy consumption of the logistics departments such as enterprise, organ, school
Specific gravity is larger, and burning is the source of energy, and heat exchange is the transmittance process of energy, and government continues to increase its attention degree.Tibet,
The frigid plateau region such as Qinghai are the important Defence portals in China, and the burning of frigid plateau region and heat exchange mode are being our faces
The great realistic problem faced.
The burning of ordinary burner can not adapt to the variation of ambient enviroment automatically, and altitude environment atmospheric pressure change is big,
When altitude increase, atmospheric pressure is decreased, and atmospheric density reduces, and volume of air supply will increase therewith.If being needed while altitude change
Change burner rating, the single fan passage air inlet and ordinary combustion capitiform formula of ordinary burner cannot achieve, will result in
Air-fuel ratio mismatches, and reduces combustion power and efficiency, disposal of pollutants also significantly increases.At present in various heat-exchanger rigs
In, especially in the shelter class equipment of highlands, it is its major heat source mode that flame, which burns in the duct and exchanges heat,.
Summary of the invention
The purpose of the present invention is to drawbacks described above of the existing technology, provide a kind of altitude environment self-adapting pipe
Heat exchange type method for controlling combustion, the present invention uses the flue gas of combustion barrel from the porous burner barrel structure that flows back, by ambient air
Real time data acquisition, the atmosphere data acquired according to invariable power amount of fuel and in real time calculate burning institute's required airflow, and utilize pipeline
Interior secondary air adjusts air quantity, realizes high-efficient low polluting combustion of the duct type heat exchange burner under Different Altitude environment.
First, porous burner cylinder (2) is mounted on to the inlet of pipeline (1), porous burner cylinder (2) include wind deflector (5),
The inside of banking fire plate (6), smoke backflow plate (7), combustion barrel outer cylinder (8), the combustion barrel outer cylinder (8) is equipped with smoke backflow plate
(7), banking fire plate (6) are installed in the inner cavity of combustion barrel outer cylinder (8), and external in banking fire plate (6) installs wind deflector (5)；
Second, after igniting, by using porous banking fire plate (6) to adjust the length of flame in combustion barrel, banking fire plate (6) is using porous
Cone-plate is radiated, is made of refractory material, the intermediate air-out passage of banking fire plate (6) is level-one air-out passage, which will
The mist of oil that nozzle sprays sends out combustion zone；The slope side aperture of banking fire plate (6) is second level air-out passage, which is used for
Enhance air agitation, the mist of oil sprayed made to put english in combustion barrel, strengthen mist of oil and with air mixing effect, while making flame
The effect of " pasting board " is generated in banking fire plate, so that stablizing for flame be kept to burn under altitude environment；
Third is equipped with wind deflector (5) and smoke backflow plate (7) in combustion barrel, and the wind deflector (5) of top ring side opening is mounted on
The upside of banking fire plate (6), also, the opening of wind deflector is corresponding with notch (6.2) of banking fire plate (6) respectively, and returns with flue gas
Flowing plate (7) constitutes smoke backflow channel, and at the four sides all around of smoke backflow plate, it is small that every face is uniformly arranged multiple smoke backflows
Hole (9), flue gas can be flowed back by smoke backflow aperture (9) carries out second-time burning in combustion barrel, increases recirculating zone, promotes
The mixed firinor fuel burning of mist of oil in altitude environment, flue gas flow back into combustion barrel through wind deflector (5) and smoke backflow plate (7), flue gas
Blending reduces the concentration of combustion process oxygen, and heats combustion air, realizes the pre-vaporized of fuel oil, and promote combustion space temperature
Uniformity；
4th, to keep the oil gas two-phase of optimal air-fuel ratio to be mixed and burned in porous burner cylinder (2) in altitude environment,
Air feed mainly uses binary channels air inlet adjustment technology, and air intake passage is made of combustion barrel air inlet and pipeline air-inlet two parts, respectively
It is realized by combustion barrel air inlet (4) and pipeline air inlet (3), by the analysis and theoretical calculation to altitude environment parameter, is obtained
The volume of air flow that diesel combustion needs under any height above sea level and power in plateau are as follows:
Combustion barrel intake is
Pipeline auxiliary air inlet amount is
In formula:For diesel quality flow rate,For excess air coefficient, WFor combustion power,For real-time atmospheric density,
T is current atmospheric temperature,PFor current altitude atmospheric pressure,P 0 For atmospheric pressure at sea level；
The atmosphere data acquired according to invariable power amount of fuel and in real time calculates combustor institute required airflow, height above sea level constant in power
When degree variation, keeps the i.e. combustion barrel air inlet of main air intake passage constant, change pipeline air-inlet amount；And power and the same time-varying of height above sea level
Change, changes simultaneously the air inflow of combustion barrel and pipeline, meet the best air-fuel ratio requirement of altitude environment duct type combustion flame.
Preferably, the centre bore that the intermediate wind channel of above-mentioned banking fire plate (6) is a diameter 20mm；60 have been opened directly in gradient side
Diameter is the slope side aperture (6.1) of 3.5mm, and 6 long 6.5mm are opened at the top of banking fire plate, 15 ° of wide notches (6.2) is respectively accounted for, ensure that
Air flow rate proportionings and swirl strength at different levels are greater than 0.6.
Preferably, all around the every face in four sides is uniformly arranged 6 diameters and is uniformly distributed for 2mm in smoke backflow plate (7)
Totally 24 smoke backflow apertures (9).
Preferably, above-mentioned porous burner cylinder (2) uses the form of top ring side opening, ejection circulation flue gas and fuel and sky
Gas blending, accelerates burning velocity.
Preferably, above-mentioned wind deflector (5) is mounted on the upside of banking fire plate (6), also, the opening of wind deflector (5) respectively with
The notch (6.2) of banking fire plate (6) is corresponding, and constitutes smoke backflow channel with smoke backflow plate (7), before smoke backflow plate
Left and right four sides, every face are uniformly arranged multiple smoke backflow apertures (9) afterwards, and flue gas can flow back into combustion by smoke backflow aperture (9)
It burns and carries out second-time burning in cylinder.
In above-mentioned steps three, by experiment and numerical value calculate reflux ratio between 8% ~ 16%, the cubic curve R- of fitting
Square value is 0.930, as follows with length of flame relationship,
(1)
In formula:LFor the length of flame,For smoke backflow ratio.
The beneficial effects of the present invention are: fuel-oil atmozation is of poor quality since high conditions cause fuel-viscosity variation to increase, burning effect
Rate reduces, flame is elongated, and pollutant emission increases, and the present invention is to adapt to high altitude environment, the present invention with the steady flame of banking fire plate and
Flue gas from reflux porous burner barrel structure；It can guarantee that the length of flame of highlands diesel combustion will not be too long, meet plateau ring
Efficient burning and externally heat exchange under border in pipeline；
In addition, atmospheric pressure reduces under altitude environment, for the variation for adapting to atmospheric pressure, ambient air data, root are acquired in real time
According to invariable power amount of fuel and atmospheric pressure elevation data, pass through theoretical combustor output power, the best combustion obtained with experiment
Constitutive relation between state, combustion barrel import and conduit entrance volume of air supply adjusts intake, and takes binary channels to enter the wind, and have
Meet required air capacity of burning under altitude environment conducive to intake is adjusted, the altitude environment self-adapting pipe formula heat exchange of realization is used
Efficient burning method.
Detailed description of the invention
Attached drawing 1 is structural schematic diagram of the invention；
Attached drawing 2 is the side view of porous burner cylinder；
Attached drawing 3 is the top view of porous burner cylinder；
Attached drawing 4 is the top view of banking fire plate；
Attached drawing 5 is the structure chart of smoke backflow plate；
In upper figure: pipeline (1), porous burner cylinder (2), pipeline air inlet (3), combustion barrel air inlet (4), wind deflector (5), banking fire
Plate (6), smoke backflow plate (7), combustion barrel outer cylinder (8), smoke backflow aperture 9, slope side aperture (6.1), notch 6.2.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Referring to attached drawing 1, the altitude environment self-adapting pipe heat exchange type method for controlling combustion that the present invention mentions, technical solution
It is: adjusts the intake of double air intake passages suitable for the new combustion barrel structure of altitude environment and real-time height above sea level and power requirement.
The new combustion barrel structure that the present invention uses to combine porous burner cylinder 1, opened using top ring side by porous burner cylinder 1
The form of mouth, ejection circulation flue gas and fuel and air blend, and slow down burning velocity；Banking fire plate 6 is porous radiation cone-plate, is resistance to
Fiery material offers multiple slope sides aperture 6.1 in the side of slope, can effectively solve the problems, such as that altitude environment Flame length is too long.Wherein
Five circles are distributed with along centre bore outward for slope side aperture 6.1；The centre bore of entire banking fire plate 6 is level-one air-out passage, the gradation
The main function of wind is that the mist of oil for spraying nozzle sends out combustion zone；The slope side aperture 6.2 of banking fire plate 6 is second level air-out passage,
The main function of this grade of outlet air be enhancing air agitation, make spray mist of oil put english, strengthen mist of oil and with air mixing effect,
So that flame is generated the effect of " pasting board " in banking fire plate simultaneously, forms flame-stabilizing area；The wind deflector 5 and banking fire plate of top ring side opening
6 and smoke backflow plate (7) constitute smoke backflow channel, flue gas returns through the smoke backflow aperture 9 of wind deflector 5 and smoke backflow plate 7
It flows in combustion barrel, the blending of flue gas reduces the concentration of combustion process oxygen, and heats combustion air, realizes the pre- gas of fuel oil
Change, and promote combustion space temperature uniformity, to prevent local high temperature zone from generating, so inhibiting the generation of NOx, reduces plateau
The discharge of pollutant under environment enhances the combustion efficiency of highlands fuel oil, and then enhances the external heat transfer effect of pipeline.
Air feed of the invention mainly uses binary channels air inlet adjustment technology.Air intake passage is entered the wind by combustion barrel and pipeline air-inlet
Two parts composition, is realized by combustion barrel air inlet (4) and pipeline air inlet (3) respectively.It adopts according to invariable power amount of fuel and in real time
The atmosphere data of collection calculates combustor institute required airflow, in constant height above sea level variation of power, changes pipeline air-inlet amount；And function
Rate and height above sea level change simultaneously, need to change simultaneously the air inflow of combustion barrel and pipeline, meet altitude environment duct type burning fire
The optimum proportioning requirement of flame.
A kind of altitude environment self-adapting pipe heat exchange type method for controlling combustion that the present invention mentions, including following procedure:
First, porous burner cylinder (2) is mounted on to the inlet of pipeline (1), porous burner cylinder (2) includes wind deflector (5), banking fire
The inside of plate (6), smoke backflow plate (7), combustion barrel outer cylinder (8), the combustion barrel outer cylinder (8) is equipped with smoke backflow plate (7), combustion
Banking fire plate (6) are installed in the inner cavity for burning cylinder outer cylinder (8), and external in banking fire plate (6) installs wind deflector (5)；
Second, after igniting, by using porous banking fire plate (6) to adjust the length of flame in combustion barrel, banking fire plate (6) is using porous
Cone-plate is radiated, is made of refractory material, the intermediate air-out passage of banking fire plate (6) is level-one air-out passage, which will
The mist of oil that nozzle sprays sends out combustion zone；The slope side aperture of banking fire plate (6) is second level air-out passage, which is used for
Enhance air agitation, the mist of oil sprayed made to put english in combustion barrel, strengthen mist of oil and with air mixing effect, while making flame
The effect of " pasting board " is generated in banking fire plate, flame is finally kept under altitude environment stablizes burning；
Third is equipped with wind deflector (5) and smoke backflow plate (7) in combustion barrel, and the wind deflector 5 of top ring side opening is mounted on pressure
The upside of fiery plate (6), also, the opening of wind deflector is corresponding with the notch 6.2 of banking fire plate (6) respectively, and with smoke backflow plate
(7) smoke backflow channel is constituted, is uniformly arranged multiple smoke backflow apertures 9 in all around four sides, the every face of smoke backflow plate,
Flue gas can be flowed back by smoke backflow aperture 9 and carry out second-time burning in combustion barrel, and recirculating zone is increased, and be promoted in altitude environment
The mixed firinor fuel burning of middle mist of oil, flue gas flow back into combustion barrel through wind deflector (5) and smoke backflow plate (7), and the blending of flue gas reduces
The concentration of combustion process oxygen, and combustion air is heated, realize the pre-vaporized of fuel oil, and promote combustion space temperature uniformity；
4th, to keep the oil gas two-phase of optimal air-fuel ratio to be mixed and burned in porous burner cylinder (2) in altitude environment,
Air feed mainly uses binary channels air inlet adjustment technology, and air intake passage is made of combustion barrel air inlet and pipeline air-inlet two parts, respectively
It is realized by combustion barrel air inlet (4) and pipeline air inlet (3), by the analysis and theoretical calculation to altitude environment parameter, is obtained
The volume of air flow that diesel combustion needs under any height above sea level and power in plateau are as follows:
Combustion barrel intake is
Pipeline auxiliary air inlet amount is
In formula:For diesel quality flow rate,For excess air coefficient, WFor combustion power,For real-time atmospheric density,
T is current atmospheric temperature,PFor current altitude atmospheric pressure,P 0 For atmospheric pressure at sea level；
The atmosphere data acquired according to invariable power amount of fuel and in real time calculates combustor institute required airflow, in constant height above sea level of power
When degree variation, keeps the i.e. combustion barrel air inlet of main air intake passage constant, change pipeline air-inlet amount；And power and the same time-varying of height above sea level
Change, changes simultaneously the air inflow of combustion barrel and pipeline, meet the best air-fuel ratio requirement of altitude environment duct type combustion flame.
Above-mentioned steps three, by experiment and numerical value calculate reflux ratio between 8% ~ 16%, the cubic curve R- of fitting
Square value is 0.930, as follows with length of flame relationship,
(1).
Referring to following table: the structure of banking fire plate (6) of the present invention is that when smoke backflow calculates and related than numerical value by air distribution
Property analysis:
1 experimental configuration data dependence analysis of table
Note: * indicates the significant correlation on 0.05 horizontal (unilateral side)；* indicates the significant correlation on .01 horizontal (unilateral side)
Preferably, the centre bore that the intermediate wind channel of above-mentioned banking fire plate (6) is a diameter 20mm；Having opened 60 diameters in gradient side is
The slope side aperture 6.1 of 3.5mm, opens 6 long 6.5mm at the top of banking fire plate, respectively accounts for 15 ° wide of notch 6.2, ensure that air quantity at different levels
It is greater than 0.6 with when swirl strength.
Preferably, it is that 2mm is equally distributed total that all around the every face in four sides, which is uniformly arranged 6 diameters, in smoke backflow plate
24 smoke backflow apertures (9).
Preferably, above-mentioned porous burner cylinder (2) uses the form of top ring side opening, ejection circulation flue gas and fuel and sky
Gas blending, accelerates burning velocity.
A kind of altitude environment self-adapting pipe heat exchange type burner that the present invention mentions, including pipeline (1), porous burner cylinder
(2), porous burner cylinder (2), is mounted on the inlet of pipeline (1), porous combustion by pipeline air inlet (3), combustion barrel air inlet (4)
Burning cylinder (2) includes wind deflector (5), banking fire plate (6), smoke backflow plate (7) and combustion barrel outer cylinder (8), the combustion barrel outer cylinder (8)
Inside be equipped with smoke backflow plate (7), banking fire plate (6) are installed in the inner cavity of combustion barrel outer cylinder (8), in the external peace of banking fire plate (6)
It fills wind deflector (5), wind deflector (5), banking fire plate (6) and smoke backflow plate (7) form smoke backflow channel；The banking fire plate (6)
Using porous radiation cone-plate, the intermediate air-out passage of banking fire plate (6) is level-one air-out passage, which sprays nozzle
Mist of oil send out combustion zone；The slope side aperture of banking fire plate (6) is second level air-out passage, and the second level air-out passage is for enhancing air
Disturbance makes the mist of oil sprayed put english in combustion barrel；The wind deflector 5 of top ring side opening is mounted on the upside of banking fire plate (6), and
And the opening of wind deflector is corresponding with the notch 6.2 of banking fire plate (6) respectively, and constitutes smoke backflow with smoke backflow plate (7) and lead to
Road, at the four sides all around of smoke backflow plate, every face is uniformly arranged multiple smoke backflow apertures 9, and flue gas can be returned by flue gas
Stream aperture 9, which flows back into, carries out second-time burning in combustion barrel, increase recirculating zone, promotes the mixing combustion of the mist of oil in altitude environment
It burns, flue gas flows back into combustion barrel through wind deflector (5) and smoke backflow plate (7), and the blending of flue gas reduces combustion process oxygen
Concentration, and combustion air is heated, realize the pre-vaporized of fuel oil, and promote combustion space temperature uniformity.
In addition, slope side aperture 6.1 can be set to spiral structure, flow-disturbing effect is improved.Flue gas is then to pass through negative pressure
Effect, by smoke backflow aperture 9 realize flow back.
The present invention describes in detail below for the adaptability of varying environment variation, is with 120KW combustion power
Example is described in detail, and is suitable for 0m ~ 4000m or more Different Altitude.
Altitude environment adapts to basic model data and application in the present invention:
With BMP085 barometric pressure sensor and TSYS02D temperature sensor, data biography is carried out using double wire system with single-chip microcontroller
Defeated, acquisition environmental data is transmitted in control chip, carries out burning air quantity by built-in good theoretical model and formula of the invention
With the control and regulation of power, make it that can also reach optimal combustion efficiency on plateau.
It is as follows that its height above sea level calculates mathematical model:
In formula:HFor height above sea level,PFor current altitude atmospheric pressure.
Atmospheric density:
In formula:δIt is blower correction factor,TFor current altitude environment temperature,PFor current altitude atmospheric pressure,P 0 For sea
Atmospheric pressure at plane.
The air-fuel ratio automatic adjustment of this system is realized by adjusting volume of air supply.It is can be described as down with mathematical linguistics
Formula:
In formula:Indicate volume of air supply required for optimal air-fuel ratio；TIndicate atmospheric temperature；PIndicate atmospheric pressure；WTable
Show combustion power.The relationship between atmospheric density and atmospheric pressure, atmospheric temperature is given in formula.
The theoretical air dosage of 1kg diesel oil completely burned:
Required air quality is
In formula:For diesel quality flow rate.
Then required volume of air flow
In formula:For diesel quality flow rate,WFor combustion power,For real-time atmospheric density,WFor combustion power, T is to work as
Preceding atmospheric temperature,For excess air coefficient.
Combustion barrel intake is in the present invention
Pipeline auxiliary air inlet amount is in the present invention
It is calculated by taking 120kW power as an example, combustor general power, the low heating value of diesel oil, so combustor amount of fuel, again
Because the efficiency of combustion of combustor is 95%, therefore combustor fuel consumption。
Atmospheric density takes under 0.10MPa,
The theoretical air flow then needed are as follows:
The excess air coefficient is taken to be, then volume of air flow:
(i.e. different altitude height), excess air coefficient can be calculated under varying environment pressureWhen, inventive pipeline formula
Volume of air flow needed for burning is as follows:
According to above data can fitting function curve be entered into controller chip as actually required total under standard height above sea level
Air capacity.According to duct type burning air flow rate proportioning, in the case where determining power, it is 1.0 that combustion barrel, which is in the specified intake that sea level is,, pipeline air inlet intake intake in 0m is 0.2, but increase its intake with height above sea level and increase, total blast volume is full
Foot。
Common burning can not adapt to the variation of ambient enviroment automatically.When altitude increase, atmospheric temperature drops therewith with pressure
Low, atmospheric density reduces, and volume of air supply will increase therewith, and ordinary combustion only has air feed at combustion barrel one, the bad adjusting of air quantity, also without
Method controls the effect burnt under altitude environment.
In addition, burner of the present invention realizes example in application in plateau:
By taking 120kW rated power as an example, under 0.08MPa environmental pressure, i.e. when height above sea level 2000m, required total air is
181.8m3/ h, burner acquire atmosphere data by CPU integrated manipulator in real time, and preset burner at this time quantifies output power
Air quantity require be 181.8m3/ h adjusts combustion barrel part and enters the wind 121.2 m3/ h, pipeline air inlet intake are 60.6 m3/
h.Realize the efficient burning heat exchange under the plateau height above sea level 2000m.
Embodiment 2, difference from Example 1 of the present invention is:
Under 0.07MPa pressure, i.e., when height above sea level is 3075m, required total air is 207.9m3/ h, burner pass through
CPU integrated manipulator acquires atmosphere data in real time, and the air quantity that preset burner at this time quantifies output power requires to be 207.9m3/
H adjusts combustion barrel part and enters the wind 121.2m3/ h, pipeline air inlet intake are 86.7 m3/h.It realizes under the plateau height above sea level 3075m
Efficient burning heat exchange.
Embodiment 3, the present invention is a difference in that with embodiment 1 or 2:
Under 0.06MPa pressure, i.e., when height above sea level is 4175m, required total air is 242.5m3/ h, burner pass through
CPU integrated manipulator acquires atmosphere data in real time, and the air quantity that preset burner at this time quantifies output power requires to be 242.5m3/
H adjusts combustion barrel part and enters the wind 121.2m3/ h, pipeline air inlet intake are 121.3m3/h.It realizes under the plateau height above sea level 4175m
Efficient burning heat exchange.
Embodiment 4, the present invention is a difference in that with embodiment 1-3:
If height above sea level and required power change simultaneously, by atmospheric pressure sensor acquire environmental data, while adjust combustion barrel into
Air quantity and pipeline air inlet intake.If height above sea level becomes 3075m from 2000m, while required power is reduced to 60kW by 120kW.
Air quantity adjusting at this time need to be adjusted in synchronism combustion barrel part air inlet and pipeline air inlet intake.Preset burner at this time quantitatively exports
The air quantity of power requires to be 103.9m3/ h adjusts combustion barrel part and enters the wind 60.6m3/ h, pipeline air inlet intake are 43.3m3/
h.Realize the efficient burning heat exchange of 60kW power under the plateau height above sea level 3075m；
The above is only part preferred embodiment of the invention, and anyone skilled in the art is possibly also with upper
Equivalent technical solution is modified or be revised as to the technical solution for stating elaboration.Therefore, technical solution according to the present invention
Any simple modification carried out or substitute equivalents, belong to the greatest extent the scope of protection of present invention.
Claims (6)
1. a kind of altitude environment self-adapting pipe heat exchange type method for controlling combustion, it is characterized in that including following procedure:
First, porous burner cylinder (2) is mounted on to the inlet of pipeline (1), porous burner cylinder (2) includes wind deflector (5), banking fire
The inside of plate (6), smoke backflow plate (7), combustion barrel outer cylinder (8), the combustion barrel outer cylinder (8) is equipped with smoke backflow plate (7), combustion
Banking fire plate (6) are installed in the inner cavity for burning cylinder outer cylinder (8), and external in banking fire plate (6) installs wind deflector (5)；
Second, after igniting, by using porous banking fire plate (6) to adjust the length of flame in combustion barrel, banking fire plate (6) is using porous
Cone-plate is radiated, is made of refractory material, the intermediate air-out passage of banking fire plate (6) is level-one air-out passage, which will
The mist of oil that nozzle sprays sends out combustion zone；The slope side aperture of banking fire plate (6) is second level air-out passage, which is used for
Enhance air agitation, the mist of oil sprayed made to put english in combustion barrel, strengthen mist of oil and with air mixing effect, while making flame
The effect of " pasting board " is generated in banking fire plate, so that stablizing for flame be kept to burn under altitude environment；
Third is equipped with wind deflector (5) and smoke backflow plate (7) in combustion barrel, and the wind deflector (5) of top ring side opening is mounted on
The upside of banking fire plate (6), also, the opening of wind deflector is corresponding with notch (6.2) of banking fire plate (6) respectively, and returns with flue gas
Flowing plate (7) constitutes smoke backflow channel, and at the four sides all around of smoke backflow plate, it is small that every face is uniformly arranged multiple smoke backflows
Hole (9), flue gas can be flowed back by smoke backflow aperture (9) carries out second-time burning in combustion barrel, increases recirculating zone, promotes
The mixed firinor fuel burning of mist of oil in altitude environment, flue gas flow back into combustion barrel through wind deflector (5) and smoke backflow plate (7), flue gas
Blending reduces the concentration of combustion process oxygen, and heats combustion air, realizes the pre-vaporized of fuel oil, and promote combustion space temperature
Uniformity；
4th, to keep the oil gas two-phase of optimal air-fuel ratio to be mixed and burned in porous burner cylinder (2) in altitude environment,
Air feed mainly uses binary channels air inlet adjustment technology, and air intake passage is made of combustion barrel air inlet and pipeline air-inlet two parts, respectively
It is realized by combustion barrel air inlet (4) and pipeline air inlet (3), by the analysis and theoretical calculation to altitude environment parameter, is obtained
The volume of air flow that diesel combustion needs under any height above sea level and power in plateau are as follows:
Combustion barrel intake is
Pipeline auxiliary air inlet amount is
In formula:For diesel quality flow rate,For excess air coefficient, WFor combustion power,For real-time atmospheric density,
T is current atmospheric temperature,PFor current altitude atmospheric pressure,P 0 For atmospheric pressure at sea level；
The atmosphere data acquired according to invariable power amount of fuel and in real time calculates combustor institute required airflow, height above sea level constant in power
When degree variation, keeps the i.e. combustion barrel air inlet of main air intake passage constant, change pipeline air-inlet amount；And power and the same time-varying of height above sea level
Change, changes simultaneously the air inflow of combustion barrel and pipeline, meet the best air-fuel ratio requirement of altitude environment duct type combustion flame.
2. a kind of altitude environment self-adapting pipe heat exchange type method for controlling combustion according to claim 1, it is characterized in that: institute
State the centre bore that the intermediate wind channel of banking fire plate (6) is a diameter 20mm；It is small that the slope side that 60 diameters are 3.5mm has been opened in gradient side
6 long 6.5mm are opened in hole (6.1) at the top of banking fire plate, are respectively accounted for 15 ° of wide notches (6.2), be ensure that air flow rate proportionings at different levels and rotation
Intensity of flow is greater than 0.6.
3. a kind of altitude environment self-adapting pipe heat exchange type method for controlling combustion according to claim 1, it is characterized in that:
It is that equally distributed totally 24 smoke backflows of 2mm are small that all around the every face in four sides, which is uniformly arranged 6 diameters, in smoke backflow plate (7)
Hole (9).
4. a kind of altitude environment self-adapting pipe heat exchange type method for controlling combustion according to claim 1, it is characterized in that: institute
The form that porous burner cylinder (2) use top ring side opening is stated, ejection circulation flue gas and fuel and air blend, and accelerate burning speed
Degree.
5. a kind of altitude environment self-adapting pipe heat exchange type method for controlling combustion according to claim 1, it is characterized in that: institute
State the upside that wind deflector (5) is mounted on banking fire plate (6), also, the opening of wind deflector (5) notch with banking fire plate (6) respectively
(6.2) corresponding, and smoke backflow channel is constituted with smoke backflow plate (7), at the four sides all around of smoke backflow plate, every face
Multiple smoke backflow apertures (9) are uniformly arranged, flue gas can be flowed back by smoke backflow aperture (9) carries out secondary combustion in combustion barrel
It burns.
6. a kind of altitude environment self-adapting pipe heat exchange type method for controlling combustion according to claim 1, it is characterized in that:
In above-mentioned steps three, by experiment and numerical value calculate reflux ratio between 8% ~ 16%, the cubic curve R- of fitting
Square value is 0.930, as follows with length of flame relationship,
(1)
In formula:LFor the length of flame,For smoke backflow ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN112361331A (en) * | 2019-10-11 | 2021-02-12 | 中国石油大学(华东) | Plateau type fuel oil burner with high injection smoke and design method |
| CN114517988A (en) * | 2020-11-17 | 2022-05-20 | 云米互联科技(广东)有限公司 | Control method of gas water heater, gas water heater and readable storage medium |
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| CN109237512B (en) | 2019-04-30 |
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