CN107435926A - A kind of liquid fuel and Combustion of Premixed device - Google Patents
A kind of liquid fuel and Combustion of Premixed device Download PDFInfo
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- CN107435926A CN107435926A CN201710942575.9A CN201710942575A CN107435926A CN 107435926 A CN107435926 A CN 107435926A CN 201710942575 A CN201710942575 A CN 201710942575A CN 107435926 A CN107435926 A CN 107435926A
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- liquid fuel
- air
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- burner
- liquid
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Classifications
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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
- F23D14/02—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
- F23D14/08—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 with axial outlets at the burner head
-
- 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
- F23D14/10—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 with elongated tubular burner head
-
- 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
- F23D14/60—Devices for simultaneous control of gas and combustion air
-
- 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
-
- 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
- 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
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/82—Preventing flashback or blowback
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/14—Details thereof
- F23K5/22—Vaporising devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/06—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs structurally associated with fluid-fuel burners
- F23Q7/10—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs structurally associated with fluid-fuel burners for gaseous fuel, e.g. in welding appliances
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2209/00—Safety arrangements
- F23D2209/10—Flame flashback
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spray-Type Burners (AREA)
Abstract
A kind of liquid fuel and Combustion of Premixed device, belong to premixed combustion technical field, including：Mixing unit and combustion section, described mixing unit includes, for providing air and the air supply system of hybrid system being delivered to after air is heated, the liquid fuel feed system of hybrid system is delivered to after steam for providing liquid fuel and be converted into liquid fuel, for air and liquid fuel to be carried out into the hybrid system that homogeneous mixes；Described combustion section includes the igniter of burner and setting on the burner, air inlet and exhaust outlet is respectively equipped with the both ends of burner, igniter is close to exhaust outlet side.Beneficial effect of the present invention：A whole set of mixing apparatus is simple in construction, and manufacturing cost is low, and routine use and later maintenance cost are low, and liquid fuel is changed into after steam can form homogeneous charge with air, and igniter structure is simple, and ignition energy is adjustable, and the stable burning of premix can be achieved.
Description
Technical field
The present invention relates to premixed combustion technical field, specifically a kind of liquid fuel and Combustion of Premixed device.
Background technology
Premixed combustion refers to fuel before combustion and air（Or oxygen）In advance fullyMixingForm homogeneous charge,
The process caught fire in burner, burnt, it is another typical combustion mode relative to diffusion combustion.Burner
In in order to realize liquid fuel premixed combustion, it is necessary to which liquid fuel and air are uniformly mixed, after forming homogeneous charge
Feed combustion chamber.Traditional liquid and air mixing device are typically mixed liquid fuel atomization with air by nozzle naturally,
The fuel atomization mode and hybrid mode are difficult to the purpose that homogeneous in the short time mixes.
Burner require combustion mixture it is different in flow rate it is lower can realize reliable ignition, combustion mixture is in high flow rate
Under how to realize that reliable ignition, flame stabilization burning are to need the key technical problem that solves.Current combustion system is in gaseous mixture
When flow velocity is higher there is the defects of too fast of radiating in igniting element, and high flow rate gaseous mixture flows through igniting element, and igniting element radiated
It hurry up, cause ignition energy insufficient；Such as using electric spark as incendiary source, when gaseous mixture flow velocity is higher, spark ignition is difficult to
Fiery core or the easy extinguishing of fiery core are formed, ignition energy deficiency often occurs, it is impossible to the problems such as reliable ignition.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of liquid fuel and Combustion of Premixed device, solve liquid
Fuel forms homogeneous charge and high flow rate ignition of mixed gas with air and stablizes combustion problem.
The present invention is that technical scheme is used by solving above-mentioned technical problem：A kind of liquid fuel and Combustion of Premixed
Device, including for the mixing unit for mixing liquid fuel with air progress homogeneous and gaseous mixture is carried out clean-burning burning
Portion,
Described mixing unit includes, for providing air and the air supply system of hybrid system being delivered to after air is heated,
The liquid fuel feed system of hybrid system is delivered to after steam for providing liquid fuel and be converted into liquid fuel, is used for
The hybrid system that air is mixed with liquid fuel progress homogeneous；
Described combustion section includes the igniter of burner and setting on the burner, and burning is respectively equipped with the both ends of burner
Device air inlet and exhaust outlet, igniter is close to exhaust outlet side；
Described hybrid system includes blender, and blender is hollow seal structure, and the both ends of blender are respectively equipped with air inlet
Exporting with homogeneous charge, the heart is in axial direction fixed with central shaft in a mixer, and the outer surface of central shaft is shape of threads,
Multiple water conservancy diversion fan blades are arranged on center shaft, and the direction blade of two neighboring water conservancy diversion fan blade is reversed；
The igniter includes heating wire, ignition switch and seal pipe, and heating wire is arranged in seal pipe, and ignition switch is located at
Seal pipe is outer and is connected with heating wire, and the length direction of heating wire is arranged resistance to outside perpendicular to the axial direction of seal pipe, the heating wire
High temperature pipe, high-temperature resistant tube surface be provided with multiple supply streams through stomata, the flange that the igniter is set by its both ends with
Burner is tightly connected.
Air supply system of the present invention includes air flow meter, pressurizer tank, air pump and air heater, institute
State air flow meter to connect by the air inlet of pipeline and pressurizer tank, the gas outlet of pressurizer tank is connected by pipeline and air pump
Connect, air pump is connected by the inlet end of pipeline and air heater, and the outlet side of air heater is connected with hybrid system, in institute
The connecting pipe stated between air pump and air heater is provided with air flow control valve.
Liquid fuel feed system of the present invention includes high-pressure nitrogen bottle, liquid fuel holding vessel, fluid flow control
Valve and liquid fuel evaporator processed, the high-pressure nitrogen bottle are connected by pipeline with the entrance of liquid fuel holding vessel, liquid combustion
Expect that the outlet of holding vessel and the entrance of liquid fuel evaporator connect, the fuel vapor outlet port and mixed stocker of liquid fuel evaporator
System is connected, and liquid mass flow is provided with the connecting pipe between the liquid flow control valve and liquid fuel evaporator
Meter.
Water conservancy diversion fan blade of the present invention includes a circular connector and is uniformly arranged on the more of circular connector periphery
Individual blade, described blade are the arc-shaped curved surface with drainage, and it bends to a direction, there is drainage to make gas
With.
In burner of the present invention spark arrester, flame stabilization are sequentially provided with by burner air inlet to igniter direction
Device, described flameholder are connected by flange with burner, and flameholder includes a disk, is uniformly set on the disk
Have multiple flow-disturbing stomatas, be uniformly arranged multiple screwed holes in the peripheral circumferential direction of disk, the flow-disturbing stomata it is a diameter of
3mm。
Liquid fuel evaporator of the present invention includes liquid fuel evaporation tube and heating tube, and liquid fuel evaporation tube is equal
It is even to be spirally wound on heating tube outer surface.
The appearance on connecting pipe surface and blender between liquid fuel evaporator of the present invention and hybrid system
Face is equipped with heat-insulation layer.
Temperature sensor is equipped with air heater and fuel vaporizer of the present invention to monitor air and liquid
The heating-up temperature of fuel.
The number of water conservancy diversion fan blade of the present invention is 4-6, and the distance between two neighboring water conservancy diversion fan blade is 15-
30cm。
Temperature sensor is provided between spark arrester and flameholder of the present invention to monitor the temperature of homogeneous charge.
The beneficial effects of the invention are as follows：The present invention provides a kind of liquid fuel and Combustion of Premixed device, particularly for methanol and sky
The mixing and burning of gas, package unit is simple in construction, and manufacturing cost is low, reduces routine use and later maintenance cost, have with
Lower advantage：
1st, wherein air supply system is used to provide the air needed for liquid fuel combustion, and adjusts the air-fuel needed for fuel combustion
Than air mass flow can be needed to be adjusted by system, and be measured by mass air flow sensor, set air flow meter and sky
Flow control valves, the mass flow of air and the air capacity of control supply are measured respectively；Liquid fuel feed system is used to carry
For the liquid fuel needed for burning and the supply of liquid fuel steam is controlled, sets liquid flow control valve to adjust the confession of fuel
To amount, mass flowmenter is set to measure the fuel quantity of supply；Hybrid system is used for homogeneous fuel combination steam and hot-air；Liquid
Fuel vaporization pipe uniform winding is arranged in outside electric heating tube, increases evaporation heating area, improves evaporation efficiency, evaporator cost
Relatively low, the temperature of electric heater can be adjusted by changing the power of electric heater；
2nd, the rotation direction of the water conservancy diversion leaf blade has two kinds of dextrorotation and derotation, and the rotation direction of water conservancy diversion fan blade is positive and negative to be staggered installation of solid
In centration axis, when air-flow side is varied multiple times through the positive and negative water conservancy diversion fan blade being staggered installation of of rotation direction in fuel vapour and stream of hot air
To, be advantageous to fuel vapour and air uniformly mixes, shortening incorporation time, formation homogeneous charge；
3rd, the connecting pipe surface between liquid fuel evaporator and hybrid system and blender surface are equipped with heat-insulation layer, right
Liquid fuel steam is incubated, and avoids that cooling liquefaction phenomenon occurs in liquid fuel steam flow process, and then be advantageous to fire
Expect the mixing of steam and air；
4th, igniter of the present invention is lighted a fire using heating wire, and igniter cost is cheap and easy to use, and heating wire is using porous
High-temperature resistant tube wraps up heating wire；Multiple stomatas are uniformly opened up on high-temperature resistant tube, gaseous mixture is contacted by stomata with high-temperature electric heated filament,
Igniter is set efficiently to light gaseous mixture；
5th, the length direction of heating wire can be such that the gaseous mixture front of supply is contacted with heating wire perpendicular to the axial direction of seal pipe,
Make ignition results more preferable；Heating wire is helical structure, and spiral helicine heating wire can improve gaseous mixture and be connect with thermal source of lighting a fire
Contacting surface is accumulated, and more effectively lights gaseous mixture, and the firing temperature of heating wire can be by adjusting heating wire link electrode adjustment work
Resistance, so as to change the power of igniter, to adapt to different igniting demands；
6th, it is provided with flameholder before igniter, flameholder creates recirculating zone to form continuous-stable incendiary source, using returning
The backflow of stream area's high-temperature fuel gas provide light fresh combustion mixture needed for energy, avoid being tempered or take off fiery phenomenon and occur, keep
Flame stabilization；Spark arrester is provided with before flameholder, prevents backfire detonation front end gaseous mixture, safety loading coefficient height.
Brief description of the drawings
Fig. 1 is the overall structure diagram of premix combustion systems of the present invention；
Fig. 2 is the overall structure diagram of mixing unit of the present invention；
Fig. 3 is the overall structure diagram of combustion section of the present invention；
Fig. 4 is the structural representation of fluid present invention fuel vaporizer；
Fig. 5 is the structural representation of igniter of the present invention；
Fig. 6 is the structural representation of flameholder of the present invention；
Fig. 7 is the positive structural representation set of water conservancy diversion fan blade of the present invention；
The oppositely arranged structural representation of Fig. 8 positions water conservancy diversion fan blade of the present invention；
Fig. 9 is the positive dimensional structure diagram set of guide vane of the present invention；
Figure 10 is the dimensional structure diagram of guide vane of the present invention.
Marked in figure：1st, air flow meter, 2, pressurizer tank, 3, air pump, 4, air flow control valve, 5, air heating
Device, 6, high-pressure nitrogen bottle, 7, liquid fuel holding vessel, 8, liquid flow control valve, 9, liquid mass flow meter, 10, liquid combustion
Expect evaporator, 10-1, liquid fuel evaporation tube, 10-2, heating tube, 11, heat-insulation layer, 12, blender, 12-1, central shaft, 12-
2nd, water conservancy diversion fan blade, 13, homogeneous charge outlet, 14, burner, 15, igniter, 15-1, heating wire, 15-2, high-temperature resistant tube,
15-3, ignition switch, 15-4, stomata, 15-5, seal pipe, 15-6, support, 15-7, link electrode, 16, flameholder, 16-
1st, flow-disturbing stomata, 17, spark arrester, 18, burner air inlet, 19, exhaust outlet, 20, circular connector, 21, blade, 22, temperature
Sensor.
Embodiment
As illustrated, a kind of liquid fuel and Combustion of Premixed device, including for liquid fuel and air to be carried out
The mixing unit and gaseous mixture is carried out clean-burning combustion section that homogeneous mixes,
Described mixing unit includes, for providing air and the air supply system of hybrid system being delivered to after air is heated,
The liquid fuel feed system of hybrid system is delivered to after steam for providing liquid fuel and be converted into liquid fuel, is used for
The hybrid system that air is mixed with liquid fuel progress homogeneous；
Described combustion section includes the igniter 15 of burner 14 and setting on the burner, is set respectively at the both ends of burner 14
There are burner air inlet 18 and exhaust outlet 19, igniter 15 includes blender close to the side of exhaust outlet 19, described hybrid system
12, blender 12 is duct type sealing structure, and the both ends of blender 12 are respectively equipped with air inlet and homogeneous charge outlet 13,
The center of blender 12 is in axial direction fixed with central shaft 12-1, and central shaft 12-1 outer surface is shape of threads, in central shaft
Multiple water conservancy diversion fan blade 12-2 coordinated with root surface screw thread, two neighboring water conservancy diversion fan blade 12-2 blade side are arranged on 12-1
To being reversed；
The igniter 15 includes heating wire 15-1, ignition switch 15-3 and seal pipe 15-5, and heating wire 15-1 is arranged at close
In tube sealing 15-5, ignition switch 15-3 is located at outside seal pipe 15-5 and is connected with heating wire, and heating wire 15-1 length direction hangs down
Directly in being arranged high-temperature resistant tube 15-2 outside seal pipe 15-5 axial direction, the heating wire 15-1, high-temperature resistant tube 15-2 surfaces are provided with more
Individual supply stream through stomata 15-4, the igniter 15 is tightly connected by the flange that its both ends is set and burner 14.
Further, described air supply system includes air flow meter 1, pressurizer tank 2, air pump 3 and air heating
Device 5, the air flow meter 1 are connected by pipeline with the air inlet of pressurizer tank 2, and the gas outlet of pressurizer tank 2 passes through pipeline
It is connected with air pump 3, air pump 3 is connected by pipeline with the inlet end of air heater 5, and the outlet side of air heater 5 is with mixing
System is connected, and air flow control valve 4 is provided with the connecting pipe between the air pump 3 and air heater 5.
Further, described liquid fuel feed system includes high-pressure nitrogen bottle 6, liquid fuel holding vessel 7, fluid flow
Control valve 8 and liquid fuel evaporator 10, the high-pressure nitrogen bottle 6 are connected by pipeline with the entrance of liquid fuel holding vessel 7,
The outlet of liquid fuel holding vessel 7 is connected with the entrance of liquid fuel evaporator 10, the fuel vapour of liquid fuel evaporator 10
Outlet is connected with hybrid system, is set on the connecting pipe between the liquid flow control valve 8 and liquid fuel evaporator 10
There is liquid mass flow meter 9.
Further, the water conservancy diversion fan blade 12-2 includes a circular connector 20 and is uniformly arranged on circular connector periphery four
Multiple blades 21 in week, described blade 21 is the arc-shaped curved surface with drainage, and it bends to a direction, is had to gas
There is drainage.
Further, spark arrester 17, fire are sequentially provided with by burner air inlet 18 to the direction of igniter 15 in the burner 1
Flame stabilizer 16, described flameholder 16 are connected by flange with burner 14, and flameholder 16 includes a disk,
Multiple flow-disturbing stomata 16-1 are uniformly provided with the disk, multiple screwed holes are uniformly arranged in the peripheral circumferential direction of disk, it is described
Flow-disturbing stomata 16-1 a diameter of 3mm.
Further, described liquid fuel evaporator 10 includes liquid fuel evaporation tube 10-1 and heating tube 10-2, liquid
The winding of fuel vaporization pipe 10-1 uniform spirals is arranged on heating tube 10-2 outer surfaces.
Further, the connecting pipe surface between the liquid fuel evaporator 10 and hybrid system and blender 12
Outer surface is equipped with heat-insulation layer 11.
Further, be equipped with temperature sensor on the air heater 5 and fuel vaporizer 10 with monitor air and
The heating-up temperature of liquid fuel.
Further, described water conservancy diversion fan blade 12-2 number is 4-6, and between two neighboring water conservancy diversion fan blade 12-2 away from
From for 15-30cm.
Further, described burner 14 is pipe burner, and material is high temperature resistant stainless steel pipe, and pipe burner
Length is not less than 500mm.
Further, described high-temperature resistant tube 15-2 is insulation tube.
Further, temperature sensor 22 is provided between the spark arrester 17 and flameholder 16.
Further, the connected mode between water conservancy diversion fan blade 12-2 and central shaft 12-1 is is rotatably connected, water conservancy diversion fan blade 12-
The 80%-95% of the pipe diameter of 2 a diameter of blender 12, the water conservancy diversion fan blade 12-2 that rotation direction is interlocked constantly change airflow direction and entered
Row stirring, is advantageous to the mixing of air and liquid fuel steam, shortens incorporation time, forms homogeneous charge.
Further, the connected mode fixation between water conservancy diversion fan blade 12-2 and central shaft 12-1 is that water conservancy diversion fan blade 12-2 can not be around
Central shaft 12-1 is rotated, and water conservancy diversion fan blade 12-2 diameter is equal with the pipe diameter of blender 12 or water conservancy diversion fan blade 12-2 is with mixing
Clutch 12 is interference fitted, and water conservancy diversion fan blade 12-2 relative positions are fixed, and gas is continuous by the positive and negative water conservancy diversion fan blade that is staggered successively
Change airflow direction to be mixed automatically, the extraneous powered belt movable vane piece that provides is provided and rotates i.e. achievable homogeneous mixing.
Further, transparent windows are provided between flameholder 16 and igniter 15 to observe gaseous mixture in combustion chamber
Combustion case.
Further, described heating wire 15-1 diameters are not less than 2mm；
Further, the high-temperature resistant tube 15-2 is connected that to be fixed on high-temperature resistant tube 15-2 close by support 15-6 with seal pipe 15-5
Tube sealing 15-5 center.
Further, there is described igniter 15 four link electrode 15-7, heating wire 15-1 to pass through link electrode 15-7
It is connected with ignition switch 15-3, the ignition energy for changing link electrode by adjusting ignition switch 15-3 and adjusting igniter 15.
Further, transparent observation window is provided between the flameholder 16 and igniter 15, the observation window is by quartz
Glass is made.
Further, the link electrode 15-7 outer surfaces between the seal pipe 15-5 outer walls and ignition switch 15-3 are provided with
Insulating barrier.
Further, the liquid fuel evaporation tube 10-1 is the copper pipe that diameter is not more than 6mm, if diameter is too big, can be dropped
Low vaporization effect, liquid fuel evaporation tube 10-1 are copper pipe, good heat conduction effect, improve vaporizing liquid efficiency.
Further, premixing combustion apparatus of the invention can realize the premixed combustion of homogeneous charge, excess air in exhaust
Coefficient variable error is less than 1%.
Operation principle of the present invention：When all valves are closed in a device, air flow control valve 4 is opened, is connect
The power supply of ventilation pump 3 and air heater 5, sets the heating-up temperature of air heater, and air is entered by air flow meter 1
Pressurizer tank 2, enters air heater 5 after the pressurization of air pump 3 and air flow control valve 4, and air heater 5 adds air
Enter blender 12 after heat；
The power supply of liquid fuel feed system is connected, opens the valve and liquid flow control valve 8 of high-pressure nitrogen bottle 6, liquid combustion
Material flows to mass flowmenter 9 through liquid flow control valve 8 under nitrogen pressure, subsequently into liquid fuel evaporator 10, heating
Make liquid fuel evaporation, form steam and enter blender 12；After air and fuel vapour enter blender 12, air and steam stream
Water conservancy diversion fan blade 12-2 rotations are driven during dynamic, for gaseous mixture after first water conservancy diversion fan blade, air-flow is in be rotated clockwise,
Break the laminar motion of air and fuel vapour in mixing duct, gaseous mixture air-flow after second water conservancy diversion fan blade is in counterclockwise
Direction rotates, and can realize uniform mixing by 6 water conservancy diversion fan blades, fuel vapour and air successively, form homogeneous mixture, and lead to
Cross burner air inlet 18 and enter combustion system.
Ignition switch 15-3 is opened, homogeneous charge is reached in burner 14 by spark arrester 17, flameholder 16, by
Igniter lights gaseous mixture；When mixed airflow is through flow-disturbing stomata 16-1 uniform on flameholder 16, gaseous mixture is in flow-disturbing gas
Recirculating zone is formed after the 16-1 of hole, the backflow of high-temperature fuel gas automatically provides the energy lighted needed for fresh combustion mixture, so that
Fresh combustion mixture is constantly ignited；The combustion system is additionally provided with spark arrester 17, spark arrester 17 using heat transfer effect and
Wall effect, prevent burned flame from backfire detonation unburned mixture occurs.
Claims (10)
1. a kind of liquid fuel and Combustion of Premixed device, including it is mixed for liquid fuel to be mixed with air progress homogeneous
Conjunction portion and gaseous mixture is set to carry out clean-burning combustion section,
Described mixing unit includes, for providing air and the air supply system of hybrid system being delivered to after air is heated,
The liquid fuel feed system of hybrid system is delivered to after steam for providing liquid fuel and be converted into liquid fuel, is used for
The hybrid system that air is mixed with fuel vapour progress homogeneous；
Described combustion section includes burner（14）And the igniter of setting on the burner（15）, in burner（14）Both ends
It is respectively equipped with burner air inlet（18）And exhaust outlet（19）, igniter（15）Close to exhaust outlet（19）Side；It is characterized in that：
Described hybrid system includes blender（12）, blender（12）For duct type sealing structure, blender（12）Both ends
It is respectively equipped with air inlet and homogeneous charge outlet（13）, in blender（12）Center is in axial direction fixed with central shaft
（12-1）, central shaft（12-1）Outer surface be shape of threads, in central shaft（12-1）On be arranged multiple water conservancy diversion fan blades（12-2）, phase
Adjacent two water conservancy diversion fan blades（12-2）Direction blade be reversed；
The igniter（15）Including heating wire（15-1）, ignition switch（15-3）And seal pipe（15-5）, heating wire（15-
1）It is arranged at seal pipe（15-5）It is interior, ignition switch（15-3）Positioned at seal pipe（15-5）Outer and and heating wire（15-1）Connection,
Heating wire（15-1）Length direction perpendicular to seal pipe（15-5）Axial direction, the heating wire（15-1）It is arranged high-temperature resistant tube outside
（15-2）, high-temperature resistant tube（15-2）Surface be provided with it is multiple supply stream through stomata（15-4）, the igniter（15）Pass through it
The flange and burner that both ends are set（14）It is tightly connected.
2. a kind of liquid fuel according to claim 1 and Combustion of Premixed device, it is characterised in that：Described air
Feed system includes air flow meter（1）, pressurizer tank（2）, air pump（3）And air heater（5）, the air mass flow
Gauge（1）Pass through pipeline and pressurizer tank（2）Air inlet connection, pressurizer tank（2）Gas outlet pass through pipeline and air pump（3）Even
Connect, air pump（3）Pass through pipeline and air heater（5）Inlet end connection, air heater（5）Outlet side and hybrid system
Connection, in the air pump（3）With air heater（5）Between connecting pipe be provided with air flow control valve（4）.
3. a kind of liquid fuel according to claim 1 and Combustion of Premixed device, it is characterised in that：Described liquid
Fuel feed system includes high-pressure nitrogen bottle（6）, liquid fuel holding vessel（7）, liquid flow control valve（8）Steamed with liquid fuel
Send out device（10）, the high-pressure nitrogen bottle（6）Pass through pipeline and liquid fuel holding vessel（7）Entrance connection, liquid fuel storage
Tank（7）Liquid outlet and liquid fuel evaporator（10）Liquid inlet connection, liquid fuel evaporator（10）Fuel steam
Vapor outlet is connected with hybrid system, in the liquid flow control valve（8）With liquid fuel evaporator（10）Between connecting tube
Road is provided with liquid mass flow meter（9）.
4. a kind of liquid fuel according to claim 1 and Combustion of Premixed device, it is characterised in that：The water conservancy diversion wind
Leaf（12-2）Including a circular connector（20）And it is uniformly arranged on multiple blades of circular connector periphery（21）, it is described
Blade（21）For the arc-shaped curved surface with drainage, it bends to a direction, has drainage to gas；It is described to lead
Flow fan blade（12-2）Diameter and blender pipe diameter are equal.
5. a kind of liquid fuel according to claim 1 and Combustion of Premixed device, it is characterised in that：The burner
（1）It is interior by burner air inlet（18）To igniter（15）Direction is sequentially provided with spark arrester（17）, flameholder（16）, it is described
Flameholder（16）Pass through flange and burner（14）Connection, flameholder（16）Including a disk, on the disk
It is uniformly provided with multiple flow-disturbing stomatas（16-1）, the flow-disturbing stomata（16-1）A diameter of 3mm.
6. a kind of liquid fuel according to claim 3 and Combustion of Premixed device, it is characterised in that：Described liquid
Fuel vaporizer（10）Including liquid fuel evaporation tube（10-1）And heating tube（10-2）, liquid fuel evaporation tube（10-1）Uniformly
It is spirally wound on heating tube（10-2）Outer surface.
7. a kind of liquid fuel and Combustion of Premixed device according to Claims 2 or 3, it is characterised in that：The liquid
Fluid fuel evaporator（10）Connecting pipe surface and blender between hybrid system（12）Outer surface be equipped with insulation
Layer（11）.
8. a kind of liquid fuel and Combustion of Premixed device according to Claims 2 or 3, it is characterised in that：The sky
Hot-air heater（5）And fuel vaporizer（10）On be equipped with temperature sensor to monitor the heating temperature of air and liquid fuel
Degree.
9. a kind of liquid fuel according to claim 1 and Combustion of Premixed device, it is characterised in that：Described water conservancy diversion
Fan blade（12-2）Number be 4-6, and two neighboring water conservancy diversion fan blade（12-2）The distance between be 15-30cm.
10. a kind of liquid fuel according to claim 5 and Combustion of Premixed device, it is characterised in that：The back-fire relief
Device（17）With flameholder（16）Between be provided with temperature sensor（22）To monitor the temperature of homogeneous charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942575.9A CN107435926A (en) | 2017-10-11 | 2017-10-11 | A kind of liquid fuel and Combustion of Premixed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942575.9A CN107435926A (en) | 2017-10-11 | 2017-10-11 | A kind of liquid fuel and Combustion of Premixed device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107435926A true CN107435926A (en) | 2017-12-05 |
Family
ID=60462282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710942575.9A Pending CN107435926A (en) | 2017-10-11 | 2017-10-11 | A kind of liquid fuel and Combustion of Premixed device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107435926A (en) |
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| CN108947209A (en) * | 2018-09-07 | 2018-12-07 | 台嘉玻璃纤维有限公司 | A kind of glass fibre pure oxygen kiln automatic burner control system |
| CN110260311A (en) * | 2019-07-22 | 2019-09-20 | 广州合隆智能设备有限公司 | Commercial gas turbine is pressurized double mixing burners |
| CN110979684A (en) * | 2019-12-11 | 2020-04-10 | 贵州理工学院 | Can realize unmanned aerial vehicle of accurate seeding |
| CN111066772A (en) * | 2019-12-27 | 2020-04-28 | 鲍光彪 | Trunk expelling parasite device for garden maintenance |
| CN112283701A (en) * | 2020-12-29 | 2021-01-29 | 烟台工程职业技术学院(烟台市技师学院) | Premixed mixed fuel burner |
| CN115728438A (en) * | 2022-11-18 | 2023-03-03 | 天津大学 | Device and method for testing combustion characteristics of variable ignition energy working medium |
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| CN115728438B (en) * | 2022-11-18 | 2024-05-28 | 天津大学 | Device and method for testing combustion characteristics of variable ignition energy working medium |
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Application publication date: 20171205 |