CN86106900B - Combustible gas burner for soaking - Google Patents
Combustible gas burner for soaking Download PDFInfo
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- CN86106900B CN86106900B CN 86106900 CN86106900A CN86106900B CN 86106900 B CN86106900 B CN 86106900B CN 86106900 CN86106900 CN 86106900 CN 86106900 A CN86106900 A CN 86106900A CN 86106900 B CN86106900 B CN 86106900B
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- gas
- burner
- swirl element
- combustion
- swirl
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Abstract
The present invention belongs to the technical field of a burner, particularly to a combustible gas burner for soaking furnaces of steel plants. Rotational flow elements are respectively arranged in a primary combustible gas passage, a secondary combustible gas passage and a combustion-supporting gas passage of a burner body; a jet flow passage of a burner brick forms a truncated cone shape, a passage outlet forms a circular arc shape, and then combustible gas and combustion-supporting air entering soaking furnaces are uniformly mixed, and form a mixed combustible gas flow with good spreadability.
Description
The invention belongs to technical field of burner, the fuel burner nozzle that particularly a kind of steel plant soaking pit is used.
At present, adjustable gaseous fuel burner used on steel plant's soaking pit both at home and abroad, the fuel burner nozzle using with domestic relevant producer of for example U.S. meter Te Lan---Luo Si company introduction, the feature of these burners is, in use procedure, can be according to different needs, obtain the long and short adjustable air mixture for soaking pit stream.Metallurgical industry publishing house version in June nineteen eighty-three, the Cai Qiaofang of Kunming Polytechnic College chief editor, book for college " heating furnace " chapter 8 soaking pit, in the 217th to 223 pages, burner one saves, disclose a kind of like this burner arrangement for soaking pit, its structure is the burner of tape guide blade, and Gas Flow is flowed out by center sleeve, on gas pipe outer wall, there are some guide vanes, become 22 °～30 ° angles with central axis.Speed when air sprays is like this accelerated and is produced rotation, and whole flame forms a jet that rotation is advanced, and makes flame temperature comparatively even along the distribution of furnace superintendent.Fig. 8-6 show a kind of flame-adjustable burner of adjusting wind type, by changing the ratio of central shaft Tangential Wind aweather and around, adjustable flame length.But there is obvious shortcoming in these burners: make to enter the combustion gas in soaking pit and help combustion gas mixing inhomogeneous, the air mixture stream of formation is thin, and spreadability is bad.
The object of the invention is, the problem existing for above-mentioned fuel burner nozzle makes improvements, and propose a kind of combustion gas and combustion-supporting gas that can make to enter in soaking pit and mixed, and the good fuel burner nozzle of spreadability.
For achieving the above object, the present invention adopts a kind of new departure.Burner body is made up of concentric three layers of sleeve pipe.One time gas-flow is flowed out by a gas sleeve center.Secondary gas-flow first flows in the secondary blast tube of secondary gas sleeve and a gas sleeve composition, because end is sealed, finally the swirl element on secondary gas sleeve outer wall by being installed near end, flow to the combustion-supporting gas channel place being made up of shell and secondary gas sleeve.The combustion-supporting gas channel that combustion air current is made up of shell and secondary gas sleeve flows out.Each air-flow all forms swirling eddy by swirl element separately.Combustion air current is first mixed to form air mixture stream with secondary gas-flow rotating Vortex in combustion air current passage.Can reduce like this resistance ， And that secondary gas-flow sprays combustion air current obtains mixing good rotation and open up the air mixture of penetrating and flow.A combustion gas mixes with the air mixture stream reverse rotation of secondary combustion gas, combustion-supporting gas in the fluidic channel of burner block, strengthens the mixing of a combustion gas and secondary combustion gas, combustion-supporting gas.This burner is particularly useful for combustion gas, soaking pit that combustion-supporting atmospheric pressure is lower.
Fig. 1 is structural representation of the present invention;
Fig. 2 is secondary gas sleeve structure chart in Fig. 1;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is a gas rotary fluid element structure chart in Fig. 1;
Fig. 5 is the A-A side view of Fig. 4.
Below in conjunction with accompanying drawing, the present invention is illustrated:
Fuel burner nozzle is made up of burner block and burner body two parts.
Burner block part comprises burner block 1, fluidic channel 8, outlet 9 and import 10 etc.Fluidic channel can be that truncated cone or top are two kinds of forms of truncated cone for cutting cylindrical bottom, extends expansion by import to outlet, and its angle of flare β is 15 °.Outlet is circular arc, and arc radius R is 140mm, and import has an interface, for affixed burner body.
Burner body part comprises 2, gas sleeves 4 of shell, 3, blast tubes 13 of secondary gas sleeve, secondary blast tube 12,11, fuel gas inlet G of combustion-supporting gas channel
1, secondary fuel gas inlet G
2, help fuel gas inlet A, a gas rotary fluid element 7, secondary gas rotary fluid element 5, combustion-supporting cyclonic current element 6.Each swirl element is positioned at respective channel, burner body head.
The each several part inverse scope of fuel burner nozzle of the present invention is as follows:
Swirl element 6 forms by being no less than 10 spiral flow blades of arranging with swirl element 5 rotating Vortexes, and each swirl vane is fixed on the outer wall of secondary gas sleeve 3 heads, is positioned at after swirl element 5 its eddy flow angle α
4for: 18 °≤α
4≤ 25 °.
Adopt fuel burner nozzle of the present invention to there is following positive effect:
The secondary gas rotary fluid element 5 that the embodiment of fuel burner nozzle of the present invention adopts is made up of 16 jet pipes that rotation is arranged clockwise, and each jet pipe is fixed on the outer wall of secondary gas sleeve 3 heads, and communicates with secondary blast tube 12; Nozzle exit is oblate, before being positioned at combustion-supporting gas channel 11, combustion-supporting cyclonic current element 6; Each jet pipe anglec of rotation α
2be 65 °, the angle of intersection (α of jet pipe center line and burner axis
3/ 2) be 65 °.The spiral flow blade composition that combustion-supporting cyclonic current element 6 is 12 left-handed arrangements, each swirl vane is fixed on the outer wall of secondary gas sleeve 3 heads, after being positioned at secondary gas rotary fluid element 5, its eddy flow angle α
4it is 25 °.One time gas rotary fluid element 7 is made up of the swirl vane of 6 dextrorotation arrangements, and each swirl vane is fixed on the inwall of gas sleeve 4 heads, its eddy flow angle α
1be 18 °, its angle of bend γ is 13 °.One time gas sleeve 4 itself forms a blast tube 13, is positioned at three-channel innermost layer; Space between secondary gas sleeve 3 and shell 2 forms combustion-supporting gas channel 11, is positioned at three-channel outermost layer; Space between gas sleeve 4 and secondary gas sleeve 3 forms secondary blast tube 12, is positioned at three-channel intermediate layer.
Using coal gas as combustion gas, air is as combustion-supporting gas.When work, air enters air duct 11 by air swirl element 6 from air intlet A, forms left-handed air stream.Secondary coal gas is by secondary gas inlet G
2enter secondary gas passage 12, by secondary coal gas swirl element 5, form secondary coal gas identical from air stream direction of rotation and that angle is different.In air duct 11 before air swirl element 6, secondary coal gas mixes in this rotation with air, forms the air mixture stream of rotation scattering.A coal gas is by a gas inlet G
1enter gas passage 13 one time, by a coal gas swirl element 7, form with secondary coal gas, air Mixture and flow the dextrorotation air-flow that direction of rotation is contrary.In burner block fluidic channel 8, one time coal gas further mixes with the air mixture stream of secondary coal gas and air, fluidic channel wall and outlet thereof are conducive to the scattering of the air mixture stream of secondary coal gas, air, and make it according to the ideal distribution mode expansion of burning gases in soaking pit, form the good combustion-gas flow of spreadability mixing.
By said the present invention fuel burner nozzle, be used on upside list burner soaking pit and test, the flame profile forming for fuel burner nozzle under heat condition in difference is as shown in the table:
Data are the observation data while opening bell before ★ oblique line, and after oblique line, data are the observation data of bell while closing.
Claims (3)
1. steel plant's combustible gas burner for soaking, it mainly comprises by shell (2), burner block (1) composition of the burner body of secondary gas sleeve (3) and (4) three layers of concentric tubes of a gas sleeve and swirl element (7) composition and the band fluidic channel (8) of burner body export department, it is characterized in that: seal the outlet of the secondary blast tube (12) between secondary gas sleeve (3) and a gas sleeve (4), on secondary gas sleeve (3) outer wall, near the port of export, swirl element (5) is installed, thereby make secondary combustion gas flow to the combustion-supporting gas being formed by shell (2) and secondary gas sleeve (3) through swirl element (5) by (11) exit, on secondary gas sleeve (3) outer wall, being positioned at swirl element (5) installs and the homodromal swirl element of swirl element (5) (6) afterwards, swirl element (7) with swirl element (5), (6) reverse rotation is installed on the inwall of the close exit of a gas sleeve (4), burner block (1) has import (10) and the expansion outlet (9) of affixed burner body.
2. according to the said fuel burner nozzle of claim 1, it is characterized in that: swirl element (5) is made up of the jet pipe that is no less than 12 rotation arrangements, nozzle exit is oblate, is positioned at combustion-supporting gas channel (11), each jet pipe anglec of rotation α
2for: 55 °≤α
2the angle of intersection α of≤65 ° of jet pipe center lines and burner axis
3/ 2 are: 55 °≤α
3/ 2≤65 °; Swirl element (6) forms by being no less than 10 spiral flow blades, each eddy flow angle α
4for: 18 °≤α
4≤ 25 °; Swirl element (7) forms by being no less than 6 swirl vanes, the eddy flow angle α of swirl vane
1for: 18 °≤α
1≤ 25 °, its angle of bend γ is: 13 °≤γ≤17 °.
3. according to the said fuel burner nozzle of claim 1 or 2, it is characterized in that: fluidic channel (8) is that semicircle section cylindrical channel and Lower Half are that semicircular arc truncated cone passage forms by the first half, and its angle of flare β is: 7 °≤β≤15 °; Outlet (9) is circular arc, and arc radius R is: 140mm≤R≤180mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106900 CN86106900B (en) | 1986-10-17 | 1986-10-17 | Combustible gas burner for soaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106900 CN86106900B (en) | 1986-10-17 | 1986-10-17 | Combustible gas burner for soaking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86106900A CN86106900A (en) | 1988-04-27 |
| CN86106900B true CN86106900B (en) | 1988-11-09 |
Family
ID=4803406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86106900 Expired CN86106900B (en) | 1986-10-17 | 1986-10-17 | Combustible gas burner for soaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86106900B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427827C (en) * | 2006-05-23 | 2008-10-22 | 王志祥 | Internal combustion blast furnace gas special nozzle with pyramid trustum jet device |
| CN101561140B (en) * | 2009-05-25 | 2012-11-14 | 重庆赛迪工业炉有限公司 | Wide-flame burner nozzle |
| CN103206708B (en) * | 2013-03-20 | 2018-05-11 | 洛阳腾节炉业科技有限公司 | A kind of heat-accumulating burner |
| CN106016263B (en) * | 2016-08-12 | 2018-07-03 | 吴德福 | A kind of no-fuel-switch heat-storage type burner gas gun |
| CN107514636B (en) * | 2017-10-10 | 2023-09-08 | 安徽科达洁能股份有限公司 | Burner for suspension roasting furnace and application thereof |
| CN107906514B (en) * | 2017-12-04 | 2024-04-09 | 安德森热能科技（苏州）有限责任公司 | Flat flame low-nitrogen burner |
-
1986
- 1986-10-17 CN CN 86106900 patent/CN86106900B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86106900A (en) | 1988-04-27 |
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| SE01 | Entry into force of request for substantive examination | ||
| PB01 | Publication | ||
| C06 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |