CN105627317B - Rapidly mixing tubulose flame burner with axial jet - Google Patents
Rapidly mixing tubulose flame burner with axial jet Download PDFInfo
- Publication number
- CN105627317B CN105627317B CN201511029736.2A CN201511029736A CN105627317B CN 105627317 B CN105627317 B CN 105627317B CN 201511029736 A CN201511029736 A CN 201511029736A CN 105627317 B CN105627317 B CN 105627317B
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- China
- Prior art keywords
- flame
- burner
- glass tube
- quartz glass
- nozzle
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2204/00—Burners adapted for simultaneous or alternative combustion having more than one fuel supply
-
- 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
- F23D2900/21—Burners specially adapted for a particular use
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
The present invention relates to a kind of rapidly mixing tubulose flame burners with axial jet.Burner according to the present invention including burner body and axial jet device, has eddy flow mixing chamber inside burner body；Burner body further includes at least two air flow inlets tangentially connected along eddy flow mixing chamber with eddy flow mixing chamber.Fuel and the oxidant of the present invention injects burner from the tangential fine crack entrance for being distributed in circumference respectively, flow velocity is relatively low or oxygen concentration is higher in addition pure oxygen in the case of can prevent the tempering even generation of explosion.The present invention is using aerodynamic characteristic on the inner wall of quartz glass tube, form one layer of unburned gas film that density is larger, temperature is relatively low, the flame region inside quartz glass tube is wrapped, the heat reduced between flame and wall surface is transmitted, it is effectively reduced the loss of heat, heat utilization efficiency is high, easily obtains higher temperature, can improve the quality of gas flame cuttiug and the yield of flame synthesis nano particle.
Description
Technical field
The present invention relates to combustion fields, and in particular to a kind of rapidly mixing tubulose flame burner with axial jet.
Background technology
Since Chinese welding society and Chinese welding association set up, two Conferences be the development of cutting industry, cutting technique and
Popularization and application are made that outstanding contribution.At this stage, the utilization of gas flame cuttiug industrially is very universal, larger to thickness
The cutting of the low carbon steel plate material of (being more than 20mm), the saving energy, at low cost, cut quality is high, raw due to having for gas flame cuttiug
The advantages that efficient is produced, is widely used.The fields use such as shipbuilding, automobile in China is very universal.In addition, flame
Nano materials are also gradually valued by people, since hydrocarbon flame is capable of providing hot environment and carbon source, required combustion
It is relatively easy to burn equipment, it is easy to implement, it is widely used in a variety of applications.
However gas flame cuttiug technology at this stage there is it is many problem of, generally there are edge defect, cutting sections to lack
Fall into, dross, crackle the problems such as, this has a great impact to gas flame cuttiug processing quality, affects gas flame cuttiug to a certain extent
Promote the use of.The main reason for causing these problems is the temperature for being unable to the pre- thermal-flame of flexible modulation, and metal plate is damaged
It is bigger；Nozzle is easily blocked and is even damaged, and has influenced the flatness in gas flame cuttiug face；It is not high enough to preheat flame temperature, leads
It is cracked on cause cut surface, influence the processing quality of gas flame cuttiug；Cutting member surface uneven heating, causes cut edge to collapse
Deng.In order to improve the quality of gas flame cuttiug, higher requirement is proposed to gas flame cuttiug burner, it is desirable to be able to which flexible modulation is pre-
The temperature of thermal-flame improves the service life of nozzle, reduces dross, heats the advantages that fast.The flame synthetic technology of nano material
It is more at this stage that Stagnant flame area (turbulent combustion) is generated to realize using swirl flame.On the one hand, turbulence type flame is not easy
Precise controlling, Flame Temperature Distribution may be unevenly distributed, and the nano particle diameter of synthesis is uneven, on the other hand, the type
Burner is difficult to realize the synthesis of high-volume nano particle.Therefore, design it is a kind of have security reliability, can work long hours,
Stability is high, heating temperature is uniform and controllable burner becomes have very much realistic meaning.
A kind of rapidly mixing tubulose flame burner with axial jet of the present invention, can preferably adjust eddy flow tubulose
Flame structure length, the advantages of most critical is that the pure oxygen preheating length of flame can extend, and ensures to automate machine under rough interfaces
Tool cutting is smoothly carried out, and meets cutting thickness requirement；Simultaneously, moreover it is possible to form uniform, stable, controllable flame, flame temperature can
To realize the regulation and control in 1200-2600 degrees Celsius of section by changing oxygen flow, thus reach nanometer in more wide temperature range
The high-volume synthetic technology of particle.In addition, it is dangerous without tempering during this flame burner work, securely and reliably, and except gas
Burning is outer, it may also be used for the features such as solid, liquid burns and heating, and fuel source is extensive, simple in structure, requirement is low.
Invention content
The purpose of the present invention is to solve part uneven heating is cut during gas flame cuttiug, dross, cut surface occurs
Defect has the problems such as crackle and flame nano materials yield are not high enough to propose a kind of rapidly mixing tube with axial jet
Shape flame burner.
A kind of rapidly mixing tubulose flame burner with axial jet, burner include burner body and axially penetrate
Device is flowed, there is eddy flow mixing chamber inside burner body；It is tangential along eddy flow mixing chamber that burner body further includes at least two
The air flow inlet connected with eddy flow mixing chamber.
Further, burner body includes front cover body, eddy flow frame and rear cover ontology；Axial jet device includes spray
Mouth；Through-hole is provided on nozzle；Rear cover ontology is provided with through-hole；Nozzle is arranged on inside through-hole；At least two air flow inlets are set
It puts on eddy flow frame.
Further, eddy flow frame is internally provided at least two slots, and slot is internally provided with adjustment block corresponding with slot number amount,
Air flow inlet is formed between adjustment block and the side wall of slot.
Further, rear cover ontology is used with nozzle and is threadedly coupled.
Further, adjustment block has the curved guiding surface coordinated with eddy flow mixing chamber.
Further, at least two air flow inlets include fuel inlet and oxidant inlet, and fuel and oxidant are by leading
It manages and is connected with being connected to the adapter of eddy flow frame.
Further, burner further includes quartz glass tube, and quartz glass tube passes through glass tube fixing sleeve and front cover body
It is connected.
Further, quartz glass tube is concentric with eddy flow mixing chamber intrados and diameter is equal.
Further, front cover body, eddy flow frame and rear cover ontology are connected using fastening bolt.
Further, adjustment block is fixed with eddy flow frame using fastening bolt.
The characteristics of burner is：1) fuel injects in the combustion chamber of burner rapidly from tangential inlet respectively with oxidant
It is mixed and burned, these tangential inlets are distributed on the circumferencial direction and circumference axial direction of combustion chamber, in high oxygen concentration even pure oxygen
Under conditions of can effectively prevent the generation of tempering phenomenon, have good security reliability, disclosure satisfy that gas flame cuttiug to each
The requirement of kind temperature.2) proportioning of oxygen and diluent is adjusted by flowmeter, it can be with the concentration of flexible modulation oxygen, so as to change
Become the temperature of pre- thermal-flame, widened the rapidoprint field of gas flame cuttiug, improve the processing quality of nano material.3) it utilizes
The tangential inlet duct that is distributed on the circumference of combustion chamber and air intake duct vertically, the gas for making to flow at a high speed is along locular wall and pipe
Wall high speed rotation is pushed ahead, and this gas-dynamic behaviour makes unreacted fuel gas be tightly attached on the inner wall of eddy flow quartz glass tube, is formed
The gas membrane that one layer density is larger, temperature is relatively low, has wrapped the flame of tubular body, has contained between flame and wall surface
Conduction of heat effectively reduces the loss of flame heat regulating, improves preheating flame temperature, and the tubular flame of formation has very
Good dynamic stability and thermal stability form the uniform flame of radial temperature profile in pipe interior zone, can be to being cut
Cutter member surface is evenly heated.4) unburned air film has separated being in direct contact for flame and flame combustion wall, reduces gas flame cuttiug
The wall surface temperature of burner plays the role of being effectively protected, extends the service life of burner, expands combustion to burner
The scope of selecting material of burner.5) due to the swirling flow characteristic of pre- thermal-flame, the ablation and blocking of nozzle are prevented to a certain extent；Nozzle
With fluidic device using being threadedly coupled, can flexible modulation nozzle according to demand size.6) pre- thermal-flame rotates in pipe
Flowing, the flame of outflow rotation, heats work piece surface at nozzle；Swirl flame is carried out to heating member surface
Flame is not easy to extinguish during heating, and can blow down the dross generated during gas flame cuttiug to a certain extent, improves flame
The quality of cutting.7) this burner can increase fluidic device and form gas flame cuttiug burner in the axial direction, can also be in axial direction
On be passed through predecessor, nano material is produced using flame synthetic method, since the flame of formation is laminar flow tubular flame, more
Be easy to control, can improve the quality of nano material processing, and according to yield it is different can with the size of change burning device, from
And carry out large batch of production；In addition it is also possible to heating for metal surface etc., purposes is very extensive.
Advantageous effect：
1. the fuel of the present invention injects the burning of burner with oxidant from the tangential fine crack entrance for being distributed in circumference respectively
Interior is rapidly mixed and burned, flow velocity is relatively low or oxygen concentration is higher in addition pure oxygen in the case of can prevent tempering from even exploding
Generation, have intrinsic security reliability.
2. the temperature that the present invention by adjusting oxygen concentration, can be adjusted with the temperature of the pre- thermal-flame of flexible modulation, pre- thermal-flame
Degree range is big, and the rapidoprint of gas flame cuttiug broadens.
3. the present invention, using aerodynamic characteristic on the inner wall of quartz glass tube, one layer of density of formation is larger, temperature is relatively low
Unburned gas film has wrapped the flame region inside quartz glass tube, and the heat reduced between flame and wall surface is transmitted, and is had
The loss for reducing heat of effect, heat utilization efficiency is high, easily obtains higher temperature, can improve the quality of gas flame cuttiug.
4. the present invention is due to its eddy flow flow behavior, can effective protection burner wall surface, prevent ablation, extend burner
Service life；Meanwhile nozzle swirl flame is not easy to extinguish on heating member surface, heating effect is good, additionally it is possible to blow down flame and cut
The dross generated in the process is cut, improves the efficiency and quality of gas flame cuttiug.
5. the present invention can be used to rapidly mixing and be pre-mixed two kinds of different combustion cases, can be formed uniformity of temperature profile,
The laminar flow tubular flame of safety and stability；Due to having good dynamic characteristics and thermal stability, cutting material surface is heated evenly,
The quality of gas flame cuttiug can be improved, reduces the generation of crackle.
6. the present invention can obtain the gas flame cuttiug gap of different in width by replacing hole number N2 and size on nozzle.
Due to the swirling flow characteristic of pre- thermal-flame, nozzle is protected to a certain extent, and gap is prevented to be interfered deformation.
7. the present invention can be not only used for gas flame cuttiug, it can also be used to the heating of metal surface, it can also be used to the fire of nano material
Flame synthesizes, and use scope is very extensive.
Description of the drawings
The attached drawing for forming the part of the application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the outside drawing of gas flame cuttiug burner；
Fig. 2 is the half sectional view of gas flame cuttiug burner；
Fig. 3 is the cyclone outside drawing of gas flame cuttiug burner；
Reference sign：1st, quartz glass tube；2nd, glass tube fixing sleeve；3rd, front cover body；4th, copper backing；5th, pipe connects
Head；6th, cyclone；7th, rear cover ontology；8th, fixing bolt；9th, nozzle；10th, pipe fitting；11st, copper washer.
Specific embodiment
In order to better illustrate objects and advantages of the present invention, the specific embodiment of the present invention is come with reference to diagram
It further illustrates.
A kind of rapidly mixing tubulose flame burner with axial jet, main parts size include：Quartz glass tube 1,
Glass tube fixing sleeve 2, copper washer 11, front cover body 3, copper backing 4, cyclone 6, rear cover ontology 7, nozzle 9, pipe fitting 10, Gu
Determine 8 grade of bolt composition.
Front cover body 3 is coordinated with quartz glass tube 1 using transition, copper washer 10 is inserted in quartz glass tube 1, by glass
Pipe fixing sleeve 2 is inserted in quartz glass tube 1 and is threadedly coupled with the use of burner front cover body 3；Tangentially enter with N1 in cyclone 6
Mouth gap, it is tangent with the circular chamber among cyclone 6, N1 pipe fitting 5 is externally connected in cyclone, it is tangential with N1
Gap communicates respectively；It is tapped through hole among rear cover of burner ontology 7, nozzle 9, using being threadedly coupled, is being sprayed with rear cover ontology 7
The pore that quantity is a diameter of X of N2 is dispersed on mouth 9；Front cover body 3, cyclone 6, rear cover ontology 7 pass through N3 fixing bolt 8
It links together, forms a gas flame cuttiug burner rapidly mixed with axial jet.
In use, fuel is flowed into the slot entrance of cyclone with oxidant by pipe fitting 5 respectively, in quartz glass tube
The mixed gas of eddy flow is formed in 1, is lighted at 1 nozzle of quartz glass tube with igniter, Gas Jet is flowed into through pipe fitting 10
It in the through-hole of rear cover of burner ontology 7, is flowed out through nozzle 9, a jet stream is formed inside tubular flame, it is pre- in external tubular flame
Under conditions of heat, jet flame cuts industrial materials.Predecessor can be also directly added into stream portion, it is real in large quantity
Existing flame synthesis nano particle.
Above-described description has been further described the object, technical solutions and advantages of the present invention, answers
Understand, the foregoing is merely the specific implementation process of the present invention, for explaining the present invention, are not intended to limit the present invention
Protection domain, any modification, equivalent substitution, improvement and etc. done all within the spirits and principles of the present invention, should be included in
Within protection scope of the present invention.The present invention can be used for the situation of pre-mixing combustion, i.e. fuel is tangential after being mixed with oxidant
It is passed through in burner, though not can effectively prevent tempering, can still form uniformity of temperature profile, stably and controllable laminar flow tubulose fire
Flame prevents ablation phenomen.The burning of premixing form employs same structure, thus also within protection scope of the present invention.
Claims (1)
1. a kind of rapidly mixing tubulose flame burner with axial jet, it is characterised in that：Including quartz glass tube (1),
Glass tube fixing sleeve (2), copper washer (11), front cover body (3), copper backing (4), pipe fitting one (5), cyclone (6), rear cover sheet
Body (7), fixing bolt (8), nozzle (9), pipe fitting two (10)；
Its connection relation：Front cover body (3) is coordinated with quartz glass tube (1) using transition, and copper washer (11) set, glass tube is solid
Fixed set (2) is sequentially sleeved in quartz glass tube (1) outside, glass tube fixing sleeve (2) is rotated clockwise, with screw thread and burner protecgulum
Ontology (3) connects, and copper washer (11) is compressed；It can adjust and cut on demand with N1 adjustment block, adjustment block in cyclone (6)
To entry gap width, and ensure that the circular hole among tangential inlet gap and cyclone (6) is tangent, connect outside cyclone (6)
N1 pipe fitting one (5) is connected to, is communicated respectively with N1 tangential gaps；It is tapped through hole among rear cover of burner ontology (7), spray
Mouth (9) using being threadedly coupled, is dispersed with the pore that quantity is a diameter of XX of N2 with rear cover ontology (7) on nozzle (9)；By nozzle
(9) after screwing in place, the mode being connected through a screw thread tightens pipe fitting two (10) and rear cover ontology (7)；Front cover body (3),
Cyclone (6), rear cover ontology (7) are linked together by N3 fixing bolt (8), and formation combination facilitates, is conveniently replaceable, zero
Part is versatile, can be directly used in the industrial tubular flame cutting burner of guidance；
The course of work：Fuel is flowed into the gap of cyclone (6) with oxidant by pipe fitting (5) respectively, in quartz glass tube
(1) mixed gas of eddy flow is formed in, is lighted at quartz glass tube (1) nozzle with igniter, Gas Jet flows into burner
It in the through-hole of rear cover ontology (7), is flowed out through nozzle, a flame jet is formed inside tubular flame, it is pre- in external tubular flame
Under conditions of heat, jet flame cuts industrial materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029736.2A CN105627317B (en) | 2015-12-31 | 2015-12-31 | Rapidly mixing tubulose flame burner with axial jet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029736.2A CN105627317B (en) | 2015-12-31 | 2015-12-31 | Rapidly mixing tubulose flame burner with axial jet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105627317A CN105627317A (en) | 2016-06-01 |
| CN105627317B true CN105627317B (en) | 2018-07-10 |
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| CN201511029736.2A Expired - Fee Related CN105627317B (en) | 2015-12-31 | 2015-12-31 | Rapidly mixing tubulose flame burner with axial jet |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106082633B (en) * | 2016-08-22 | 2019-07-23 | 长飞光纤光缆股份有限公司 | It is a kind of for depositing the burner and deposition method of preform |
| CN107036100B (en) * | 2017-05-31 | 2019-02-22 | 北京理工大学 | A kind of axis with expansion segment cuts more cyclone gas-liquids and consolidates multiphase flow burner |
| CN107084390B (en) * | 2017-05-31 | 2019-01-29 | 北京理工大学 | A kind of clean gas-liquid double fuel Dual-cyclone combustor |
| CN107461739B (en) * | 2017-08-11 | 2018-12-11 | 北京理工大学 | A kind of multiple jet burner of the promotion liquid fuel atomization based on interior contour stealth |
| CN107511123B (en) * | 2017-09-29 | 2023-04-14 | 清华大学 | Atomized flame nanoparticle synthesis system based on multi-cyclone reinforced mixing |
| CN112836392B (en) * | 2021-03-05 | 2022-02-01 | 中国华能集团清洁能源技术研究院有限公司 | Experimental device and method for researching combustion characteristics of pulverized coal particles in turbulent flow field |
| CN113777215B (en) * | 2021-09-26 | 2023-08-25 | 西安航天动力研究所 | Test device for jet flow booster research |
| CN114459024B (en) * | 2022-02-11 | 2023-05-23 | 清华大学 | Flame synthesis burner capable of realizing axial and tangential combined rotational flow flexible adjustment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1942396A (en) * | 2004-03-15 | 2007-04-04 | 苏黎世联合高等工业学校 | Flame synthesis of metal salt manoparticles, in particular calcium and phosphate comprising nanoparticles |
| CN104456625A (en) * | 2014-11-11 | 2015-03-25 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Air inlet structure for fuel nozzle of gas turbine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5826043B2 (en) * | 2012-01-13 | 2015-12-02 | 大阪瓦斯株式会社 | Light forming device |
| WO2013170138A1 (en) * | 2012-05-10 | 2013-11-14 | University Of Connecticut | Methods and apparatus for making catalyst films |
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2015
- 2015-12-31 CN CN201511029736.2A patent/CN105627317B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1942396A (en) * | 2004-03-15 | 2007-04-04 | 苏黎世联合高等工业学校 | Flame synthesis of metal salt manoparticles, in particular calcium and phosphate comprising nanoparticles |
| CN104456625A (en) * | 2014-11-11 | 2015-03-25 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Air inlet structure for fuel nozzle of gas turbine |
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| CN105627317A (en) | 2016-06-01 |
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