CN104566378B - Burner nozzle based on electric arc discharge plasma - Google Patents
Burner nozzle based on electric arc discharge plasma Download PDFInfo
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- CN104566378B CN104566378B CN201310520201.XA CN201310520201A CN104566378B CN 104566378 B CN104566378 B CN 104566378B CN 201310520201 A CN201310520201 A CN 201310520201A CN 104566378 B CN104566378 B CN 104566378B
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- Prior art keywords
- nozzle
- electrode
- burner
- burner nozzle
- arc discharge
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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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
Abstract
The invention provides a burner nozzle based on electric arc discharge plasma. According to the burner nozzle, gas around the nozzle is heated by means of high-voltage discharge; meanwhile, a plurality of active particles which have contribution to a combustion reaction are produced. Compared with anti-extinguishment devices of other types, the process of generating the active particles has the advantages of more stable performance, lower power consumption, prevention of extinguishing of the burner with less electric energy, and extremely low running cost.
Description
Technical field
The present invention relates to burner field, more particularly, to a kind of burner nozzle based on arc discharge plasma.
Background technology
Some low-calorie gaseous fuels all can be produced in chemical industry, petroleum industry, the production process of steel and iron industry.
, it is the associated gas that ironmaking processes produce, H in combustible component taking blast furnace gas as a example2Less, and noble gases CO2、N2It is more,
Calorific value is only 2.5～3.5MJ/Nm3.The problem that gas turbine runs in burning blast-furnace gas has：
(1) calorific value relatively low so that ignition difficulties；
(2)H2Content less so that poor combustion stability, be susceptible to lean state and stop working；
(3) it is susceptible to the phenomenon of CO incomplete combustion under running on the lower load, cause efficiency of combustion to be decreased obviously.
The main method currently solving these problems has：(1) it is blended in blast furnace gas using coke-stove gas and improve heat
Value, makes burning easily organize；(2) in a combustion chamber using blast furnace gas and two kinds of fuel of fuel oil, (low negative lacking blast furnace gas
Lotus) when can switch fuel oil at any time, to guarantee flameholding；(3) it is used light diesel or coke-stove gas point to fight as fire on duty
Flame is with stable burning.Coke-stove gas, fuel oil and diesel oil etc. are all high-grade energy for blast furnace gas, in order to effectively sharp
Expend these high-grade energies with blast furnace gas in a large number, undoubtedly can increase system operation cost so that the big discounting of economic benefit
Button.Therefore, to prevent low calorific value gas fuel in combustion gas in the urgent need to finding a kind of more simply effective, economical and practical method
Flame-out problem in turbine combustion room.
Additionally, in aerospace field, for aero-engine, when occurring flame-out in high-altitude it is desirable to being capable of point again
Fire.But due to high aerial rarefaction of air, content of oxygen in air is low, and pressure and temperature is low, need also exist for using preventing from stopping working
Device.
Content of the invention
(1) technical problem to be solved
In view of above-mentioned technical problem, the invention provides a kind of simply effective, economical and practical based on arc discharge etc. from
The burner nozzle of daughter.
(2) technical scheme
According to an aspect of the invention, it is provided a kind of burner nozzle based on arc discharge plasma.This combustion
Burner nozzle includes：High-voltage ac power；Nozzle body, in a tubular form, N number of nozzle bore is formed at its top for its underpart, itself and high pressure
The earth terminal of alternating current power supply is electrically connected with；Arc discharge assembly, is fixed on the central authorities of nozzle body, and its top has downwards simultaneously court
The electrode of M metal material is set to nozzle bore, and this M electrode is electrically connected with the high-pressure side of high-voltage ac power；Wherein, should
Burner nozzle in working order under, between the nozzle body part around any one of M electrode and respective nozzle hole produce
Raw arc discharge, to heat the fuel gas being sprayed by nozzle bore, and the fuel gas molecular ionization of part is active ion,
To promote the burning of fuel gas.
(3) beneficial effect
From technique scheme as can be seen that the present invention had based on the burner nozzle of arc discharge plasma following
Beneficial effect：
(1) utilize electrion, the gas around nozzle is heated, produce simultaneously and multiple contribute to combustion reaction and enter
The active particle of row, the process of this generation active particle is more stable compared to other kinds of anti-flame device performance, power consumption
Relatively low, only consume less electricity prevent from burner stop working, operating cost is extremely low；
(2) device overall simple is compact, small volume, only need to change the nozzle segment of existing burner it is not necessary to be equipped with it
Its igniter, the cost of popularization and application is relatively low；
(3) can be for the different discharge parameter of different regulating working conditions to meet demand, simple to operate, flexible configuration.
Brief description
Figure 1A is the structural representation according to the embodiment of the present invention based on arc discharge plasma burner nozzle；
Figure 1B partly cuts open axonometric chart for burner nozzle shown in Figure 1A；
Fig. 2A is the close-up plan view of burner nozzle upper part shown in Figure 1A；
Fig. 2 B is the axonometric chart of burner nozzle upper part shown in Figure 1A.
【Main element symbol description of the present invention】
10- high-voltage ac power；
11- high-pressure side；12- earth terminal；
20- nozzle body；
21- gas passage；22nd, 23- nozzle bore；
24- gas stable cavity；25- gas access；
30- arc discharge assembly
31- support set；32- second insulating part；
33- metal bar；34- electrodes base；
35- first insulating part；36th, 37- electrode.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.It should be noted that in accompanying drawing or description describe, similar or identical portion
Divide all using identical figure number.The implementation not illustrating in accompanying drawing or describing, is those of ordinary skill in art
Known form.In addition, though the demonstration of the parameter comprising particular value can be provided herein, it is to be understood that parameter need not definitely etc.
It is worth in corresponding, but can be similar to be worth accordingly in acceptable error margin or design constraint.Mention in embodiment
Direction term, for example " on ", D score, "front", "rear", "left", "right" etc., be only the direction of refer to the attached drawing.Therefore, the side of use
It is used to explanation to term not for limiting the scope of the invention.
In the present invention, it is disposed about multiple electrodes in burner nozzle aperture, after electrode connects high-tension electricity, by neighbouring gas electricity
From producing plasma, on the other hand produced plasma one side can produce promotion burning anti-with hot gas
The active particle that should carry out, and then reach burner ignition and prevent from combustion process, occurring burner to stop working.
It is proposed that a kind of burner based on arc discharge plasma sprays in one exemplary embodiment of the present invention
Mouth.Figure 1A is the structural representation according to the embodiment of the present invention based on arc discharge plasma burner nozzle；Figure 1B is figure
Burner nozzle shown in 1A partly cut open axonometric chart.Refer to Figure 1A and Figure 1B, the present embodiment burner nozzle includes：High-voltage alternating
Power supply 10；Nozzle body 20, is prepared by metal material, and in a tubular form, N number of nozzle bore (22,23) is formed at its top for its underpart, its with
The earth terminal of high-voltage ac power 10 is electrically connected with；Arc discharge assembly 30, is fixed on the central authorities of nozzle body 20, and its top has
Have and M electrode (36,37), the high-pressure side of this M electrode (36,37) and high-voltage ac power 10 are set downwardly and toward nozzle bore
It is electrically connected with；Wherein, burner nozzle in working order under, nozzle body around electrode (36,37) and nozzle bore (22,23)
Arc discharge is produced between part, to heat the fuel gas being sprayed by nozzle bore, and the fuel gas molecular ionization by part
For active ion, to promote the burning of fuel gas.
In the present embodiment, due to not having dielectric to stop between electrode (36,37) and nozzle bore (22,23), therefore
Produce is arc discharge, and the plasma that electric discharge produces with hot gas and can generate various active particle.Active particle exists
Important function is served, this is because the chemical reaction of oxidized, particularly chain reaction pass through generation in combustion reaction
Active centre (chain carrier) is carried out, and these active centres are typically atom and group isoreactivity particle, and the speed of chain reaction
Concentration depending on active particle in combustion zone.Therefore, if utilize discharge plasma before combustion or in combustion process
Produce a number of active component in unburned area, igniting can be played and prevent flame-out effect.
To the present embodiment, the various pieces based on arc discharge plasma burner nozzle are carried out specifically individually below
Bright.
The voltage of high-voltage ac power 10 is the voltage that can excite plasma in prior art, those skilled in the art
The scope of this voltage can clearly be known.Generally, the scope of this voltage is 500V-50kV.Preferably, this high-voltage alternating
Power supply is adjustable power supply, so that the different discharge parameter of different regulating working conditions can be directed to meet demand, its output voltage
, between 500V-50kV, its reference frequency output is between 100Hz-200kHz for scope.
In the present embodiment, nozzle body 20 is similar with nozzle of the prior art.Fuel gas is entered by gas by pipeline
The gas stable cavity 24 of mouth 25 entrance lower ends, then stable air-flow passes through gas passage 21, is sprayed by nozzle bore (22,23) etc.
Go out.Wherein, nozzle bore (the 22,23) adjacent material of nozzle body top outer rim is metal material, such as rustless steel, high temperature resistant conjunction
Gold.
Fig. 2A is the close-up plan view of burner nozzle upper part shown in Figure 1A.Fig. 2 B is burner shown in Figure 1A
The axonometric chart of upper end of nozzle part.Refer to Fig. 2A and Fig. 2 B, the present embodiment arc discharge assembly 30 includes：Support set 31, its
Equally in a tubular form, it is fixed on the tubular lower of nozzle body；Metal bar 33, its underpart is sheathed in support set 31, with support set
There is between 31 second insulating part 32；Electrodes base 34, its underpart is electrically connected with metal bar 33；M electrode (36,37), point
Not Cheng inverted "L" shaped, its lower end is fixed on electrodes base 34, and its upper end is stretched out to side bending and right down after nozzle body 20
Accurate corresponding nozzle bore；Wherein, the periphery of the lower end of metal bar 33 top, electrodes base 34 and M electrode has the first insulation
Part 35.
Support set 31 plays effect that is fixing and supporting the second insulating part 32 and metal bar 33.Metal bar 33 and electrodes base
34 are connected, and play the effect of conduction, and material is copper or aluminum.
First insulating part 35 is high-temperature insulation material, and its effect is to avoid occurring between electrode and the metal of nozzle interior
Electric discharge, this insulant is located at nozzle exit, and during burner operation, temperature is higher at this, therefore needs from as ceramic, quartzy
The high-temperature insulation materials such as glass.Second insulating part 32, is used for preventing metal bar from discharging with surrounding metal, due at this away from spray
Mouth, temperature is not high, therefore selects politef as insulant.
Refer to Fig. 2A and Fig. 2 B, in the present embodiment, nozzle bore number N is 4, and electrode number M is 4, i.e. each nozzle
Hole corresponds to an electrode, but the present invention is not limited thereto.In the present invention, electrode number at least 1, no more than nozzle
The number in hole.When electrode number is identical with nozzle number of perforations, each electrode pair answers a nozzle bore.Electrode number is less than nozzle
During number of perforations, can be every one, two or more nozzle bores one electrode of arrangement.The value of M can between 2～10, N's
Value can also be between 2～10.
In the present invention, the material of electrode can be tungsten, molybdenum or high-temperature alloy.Eletrode tip and nozzle hole outlets are located flat
The vertical dimension in face can be between 1mm-50mm.The tip of electrode is in the projector distance nozzle of nozzle hole outlets place plane
Hole centre distance can be between 0-50mm.
The cross section of electrode is circle, ellipse, triangle, tetragon, polygon.When the cross section of electrode is circular,
Its diameter can be between 0.1-10mm.When the cross section of electrode is oval, its long axis length can be between 0.1-10mm
Between.When the cross section of electrode is triangle, tetragon, polygon, its length of side can be between 0.1-10mm.Additionally, it is electric
The tip of pole can be cone, elliptic cone, triangular pyramid, pyramid shape, polygonal pyramid shape.
So far, already in connection with accompanying drawing, the present embodiment has been described in detail.According to above description, those skilled in the art
The present invention should be had based on the burner nozzle of arc discharge plasma and clearly recognize.
Additionally, the above-mentioned definition to each element and method is not limited in various concrete structures, the shape mentioned in embodiment
Shape or mode, those of ordinary skill in the art can simply be changed to it or be replaced.
In sum, the present invention provide a kind of burner nozzle based on arc discharge plasma, its can be used for aviation,
The industries such as chemical industry, generating, metallurgy, can solve the problem that under gas turbine off-design behaviour, lower heat of combustion gas when flame-out problem,
And the problem stopped working in aero-engine high-altitude.
Particular embodiments described above, has carried out detailed further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail bright, be should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to the present invention, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement done etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (12)
1. a kind of burner nozzle based on arc discharge plasma is it is characterised in that include：
High-voltage ac power；
Nozzle body, in a tubular form, N number of nozzle bore is formed at its top for its underpart, and it is electrically connected with the earth terminal of high-voltage ac power
Connect；
Arc discharge assembly, is fixed on the central authorities of described nozzle body, and its top has downwards and from nozzle bore outside direction spray
Nozzle aperture arranges the electrode of M metal material, and this M electrode is electrically connected with the high-pressure side of high-voltage ac power；
Wherein, this burner nozzle in working order under, nozzle around any one of described M electrode and respective nozzle hole
Arc discharge is produced between body part, to heat the fuel gas being sprayed by described nozzle bore, and the fuel gas by part
Molecular ionization is active ion, to promote the burning of described fuel gas.
2. burner nozzle according to claim 1 it is characterised in that described high-voltage ac power be regulated power supply, its
, between 500V-50kV, its reference frequency output is between 100Hz-200kHz for output voltage range.
3. burner nozzle according to claim 1 is it is characterised in that the material of described electrode is tungsten, molybdenum or high temperature resistant
Alloy.
4. burner nozzle according to claim 1 is it is characterised in that the nozzle bore of described nozzle body top outer rim is all
Enclosing material is rustless steel or high-temperature alloy.
5. burner nozzle according to claim 1 is it is characterised in that the tip of described electrode is located with nozzle hole outlets
The vertical dimension of plane is between 1mm-50mm；The tip of described electrode is sprayed in the projector distance of nozzle hole outlets place plane
Nozzle aperture centre distance is between 0-50mm.
6. burner nozzle according to claim 1 is it is characterised in that described arc discharge assembly includes：
Support set, in a tubular form, is fixed on the tubular lower of described nozzle body；
Metal bar, its underpart is sheathed in described support set, has the second insulating part and described support set between；
Electrodes base, its underpart is electrically connected with described metal bar；
Described M electrode, is in inverted "L" shaped respectively, and described electrodes base is fixed in its lower end, and it is backward that nozzle body is stretched out in its upper end
Side bends, and is directed at corresponding nozzle bore down；
Wherein, the periphery of the lower end of the top of described metal bar, electrodes base and M electrode has the first insulating part.
7. burner nozzle according to claim 6 is it is characterised in that the material of described first insulating part is pottery or stone
English glass, the material of described second insulating part is politef.
8. burner nozzle according to claim 6 is it is characterised in that described metal bar is copper with the material of electrodes base
Or aluminum.
9. burner nozzle according to claim 6 is it is characterised in that the cross section of described electrode is circular, oval
Or polygon；The tip of electrode is cone, elliptic cone or polygonal pyramid shape.
10. burner nozzle according to claim 9 is it is characterised in that described polygon is triangle or tetragon.
11. burner nozzles according to claim 9 are it is characterised in that described polygonal pyramid shape is triangular pyramid or four ribs
Taper.
12. burner nozzles according to any one of claim 1 to 9 are it is characterised in that described N >=M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310520201.XA CN104566378B (en) | 2013-10-29 | 2013-10-29 | Burner nozzle based on electric arc discharge plasma |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310520201.XA CN104566378B (en) | 2013-10-29 | 2013-10-29 | Burner nozzle based on electric arc discharge plasma |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104566378A CN104566378A (en) | 2015-04-29 |
| CN104566378B true CN104566378B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310520201.XA Active CN104566378B (en) | 2013-10-29 | 2013-10-29 | Burner nozzle based on electric arc discharge plasma |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138824B (en) * | 2017-06-09 | 2020-01-21 | 宁波舜宇仪器有限公司 | Discharging unit, welding device comprising discharging unit and welding method |
| CN110542115A (en) * | 2018-05-28 | 2019-12-06 | 美的集团股份有限公司 | Combustion-supporting device and combustor |
| CN112556444A (en) * | 2020-12-31 | 2021-03-26 | 唐山燕山钢铁有限公司 | System for use blast furnace gas and natural gas co-combustion foaming ceramic or brick that permeates water |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998028223A1 (en) * | 1996-12-24 | 1998-07-02 | H2-Tech S.A.R.L. | Method and devices for producing hydrogen by plasma reformer |
| EP1887282A1 (en) * | 2005-05-13 | 2008-02-13 | Plazarium Ltd | Burner |
| CN101291561A (en) * | 2007-04-16 | 2008-10-22 | 通用电气公司 | Ablative plasma gun |
| CN201652348U (en) * | 2010-04-07 | 2010-11-24 | 中国石油化工集团公司 | Plasma burner |
| CN102625557A (en) * | 2012-03-30 | 2012-08-01 | 大连理工大学 | Generating device for atmospheric bare electrode cold plasma jet |
| CN102721081A (en) * | 2012-06-26 | 2012-10-10 | 哈尔滨工程大学 | Nozzle for enhancing atomization by plasma |
-
2013
- 2013-10-29 CN CN201310520201.XA patent/CN104566378B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998028223A1 (en) * | 1996-12-24 | 1998-07-02 | H2-Tech S.A.R.L. | Method and devices for producing hydrogen by plasma reformer |
| EP1887282A1 (en) * | 2005-05-13 | 2008-02-13 | Plazarium Ltd | Burner |
| CN101291561A (en) * | 2007-04-16 | 2008-10-22 | 通用电气公司 | Ablative plasma gun |
| CN201652348U (en) * | 2010-04-07 | 2010-11-24 | 中国石油化工集团公司 | Plasma burner |
| CN102625557A (en) * | 2012-03-30 | 2012-08-01 | 大连理工大学 | Generating device for atmospheric bare electrode cold plasma jet |
| CN102721081A (en) * | 2012-06-26 | 2012-10-10 | 哈尔滨工程大学 | Nozzle for enhancing atomization by plasma |
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| CN104566378A (en) | 2015-04-29 |
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