CN201145278Y - Continuous casting tundish baking combustion nozzle - Google Patents
Continuous casting tundish baking combustion nozzle Download PDFInfo
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- CN201145278Y CN201145278Y CNU2007200759563U CN200720075956U CN201145278Y CN 201145278 Y CN201145278 Y CN 201145278Y CN U2007200759563 U CNU2007200759563 U CN U2007200759563U CN 200720075956 U CN200720075956 U CN 200720075956U CN 201145278 Y CN201145278 Y CN 201145278Y
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- combustion chamber
- burner
- flange
- burner shell
- hole pipe
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Abstract
The utility model relates to a roasting device for steel-making equipment, in particular to a roasting burner of a continuous casting tundish. The continuous casting tundish roasting burner comprises a burner shell, an air inlet pipe, a gas inlet pipe, a combustion chamber and a flange; the air inlet pipe is positioned on one side of the burner shell; the gas inlet pipe is positioned on the rear side of the burner shell; the combustion chamber is positioned in the burner shell; the flange is positioned on the front end of the burner shell; the gas inlet pipe is led to the combustion chamber; the air inlet pipe is led to the burner shell; the combustion chamber is divided into a front combustion chamber and a rear combustion chamber which are in sleeve-type connection; the front combustion chamber extends forwards; the outer wall of the front combustion chamber is a thick flange; the inside of the flange is made of corhart; the outside of the flange is covered by refractory steel; and a plurality of rows of pores uniformly distributed are arranged on the sleeve wall of the rear combustion chamber. Combustion in the burner is full so as to reduce the burning noise after ejection; and the burner has long life span and strong applicability.
Description
Technical field
The utility model relates to a kind of apparatus for baking of steelmaking equipment, relates in particular to the roasting nozzle of continuous casting tundish.
Background technology
Tundish is an important metallurgical tank commonly used during steel-making continuous casting is produced, and could satisfy manufacturing technique requirent after needing before use to be baked to its lining temperature about 1100 ℃.For reaching this baking temperature, metallurgy industry generally uses high combustion rate burner.Domestic coal gas high combustion rate burner as Beijing Iron﹠Steel Design﹠Research Institute's development, the GS type natural gas high combustion rate burner of University Of Chongqing's development.External as Britain Hotwork coal gas high combustion rate burner, the coal gas high combustion rate burner that former Soviet Union heavy-duty machine factory produces.The benefit of high combustion rate burner is to form the circulation of powerful thermal current in stove, eliminates the upper and lower temperature difference in the stove, and shortcoming is because ratio of combustion is more concentrated, causes environmental protection indexs such as harmful substance in the flue gas and noise to exceed standard contaminated environment easily.
Tundish apparatus for baking during existing certain unit steel-making continuous casting is produced adopts through type high-speed gas burner, and its structure is referring to Fig. 1.After wind entered from air intake 1, one time wind was 6 hole peripheric jet flows, accounts for 2.6% of total blast volume, and secondary, tertiary air are 6 hole axial jets, accounted for 2.6% (accounting for 7.8% altogether) of total blast volume respectively, and four times wind is circumferential weld shape spout, accounts for 92.2% of total blast volume.Coal gas enters from gas entry 2, is the straight tube jet.Produce huge turbulent combustion noise after 6 hole peripheric jet flows and the coal gas mixed combustion in combustion chamber 3, noise reaches as high as 108dB.The mixing of coal gas and air is abundant inadequately inside and outside the combustion chamber in addition, and it is not thorough to burn, and atmosphere is inhomogeneous in the bag, and combustion flame is unstable, causes stoving time long, has wasted coal gas.Interior outward flange 5,4 is a heat-resisting steel material, and easy to crack causing scrapped behind long high-temperature baking.
The utility model content
The purpose of this utility model is to provide a kind of porous premix tundish roasting nozzle, and this burner internal combustion is abundant, has reduced the combustion noise after the ejection, the burner long service life, and applicability is strong.
The utility model is achieved in that a kind of continuous casting tundish roasting nozzle, comprise burner shell, air hand-hole pipe, coal gas hand-hole pipe, combustion chamber, flange, air hand-hole pipe is positioned at burner shell one side, coal gas hand-hole pipe is positioned at the burner shell rear side, the combustion chamber is positioned at burner shell, flange is positioned at the burner shell front end, and coal gas hand-hole pipe leads to the combustion chamber, and air hand-hole pipe leads to burner shell; The combustion chamber is divided into forward and backward combustion chamber, and preceding combustion chamber is that socket type is connected with the after-combustion chamber, and preceding combustion chamber stretches out forward, the outer wall of preceding combustion chamber is a thick flange, be made of refractory material in the flange, flange coats heat resisting steel outward, has the uniform aperture of many rows on the sleeve wall of after-combustion chamber.
Combustion chamber is the conical surface before described, and its front end face spreads, and helps the spouting velocity of high-temperature flue gas.
Described after-combustion chamber sleeve wall has four row's apertures vertically, and every row is along circumferentially being evenly equipped with six apertures, and it is abundant in the burner internal combustion to be convenient to combustion gas.
The utility model increases a wind feeding amount by increasing the aperture on the after-burner sleeve wall, and coke-stove gas and air meet at mutually and carry out pre-burning in the after-burner, make burning more abundant, produce high-temperature flue gas.Preceding combustion chamber is stretched out forward, and preceding combustion chamber is diffusion type and sprays forward, guaranteed the spouting velocity of high-temperature flue gas, and because burning is finished in the combustion chamber, and combustion noise is present in the combustion chamber, thereby the combustion noise after the ejection reduced.The high speed flue gas jet of burner ejection has promoted the circulation of gas in the tundish, and even furnace atmosphere has satisfied the requirement of baking process.Burner flame rigidity of the present utility model improves, and the combustion heat value height simultaneously because of sufficient combustion, has reduced gas consumption amount and air-fuel ratio, has saved electric energy.
The combustion chamber inside, front and back and the flange of the utility model burner adopt refractory material casting to form, and the outside heat resisting steel that adopts coats, and it is high temperature resistant to reach 1700 ℃, and improved the service life of burner greatly.The anterior flange form that adopts of burner, its applicability is strong, can also can normally use under the bigger condition of the distortion of the preheating gate on the tundish clad.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is existing through type high-speed gas nozzle structure schematic diagram;
Fig. 2 is the utility model continuous casting tundish roasting nozzle structural representation.
Among the figure: 1 air hand-hole, 2 coal gas hand-holes, 3 combustion chambers, 4 outward flanges, 5 inner flanges, 11 air hand-hole pipes, 12 coal gas hand-hole pipes, 13 flanges, 14 combustion chambers, 15 apertures, 16 refractory materials, 17 after-combustion chambeies, 18 preceding combustion chambers, 19 muscle bodies, 20 burner shells.
The specific embodiment
Referring to Fig. 2, a kind of continuous casting tundish roasting nozzle comprises burner shell 20, air hand-hole pipe 11, coal gas hand-hole pipe 12, combustion chamber 14, flange 13.Air hand-hole pipe 11 is positioned at burner shell 20 1 sides, and air hand-hole pipe 11 leads to burner shell 20, has aperture 15 on 14 walls of combustion chamber; Coal gas hand-hole pipe 12 is positioned at burner shell 20 rear sides, and coal gas hand-hole pipe 12 leads to combustion chamber 14, with air mixed combustion.Combustion chamber 14 is positioned at burner shell 20, and combustion chamber 18 and after-combustion chamber 17 before combustion chamber 14 is divided into, preceding combustion chamber 18 and after-combustion chamber 17 are for socket type is connected, and preceding combustion chamber 18 stretches out forward, and preceding combustion chamber 18 is the conical surface, and its front end face spreads; The outer wall of preceding combustion chamber 18 is a thick flange 13, forms by refractory material 16 cast in the flange 13, and is mixed with muscle body 19 with reinforcement intensity, and flange 13 outer coating heat resisting steel, flange 13 is positioned at burner shell 20 front ends.Have the uniform aperture 15 of many rows on 17 sleeve wall of after-combustion chamber, in the present embodiment, after-combustion chamber 17 sleeve wall have four row's apertures vertically, and every row is along circumferentially being evenly equipped with six apertures 15.
After front and back combustion chamber 18,17 inside of burner and flange 13 adopted refractory material 16 cast to form, it is high temperature resistant to reach 1700 ℃, and the coating of outside employing heat resisting steel, and improved the service life of burner greatly.The anterior flange form that adopts of burner, its applicability is strong, even also can normally use under the bigger condition of the distortion of the preheating gate on the tundish clad.
The results showed that the continuous casting tundish roasting nozzle of continuous casting tundish roasting nozzle is compared with existing through type burner, noise is reduced to present average 81dB by original average 93dB, helps execute-in-place and technical staff's physical and mental health; The burner life-span is present more than 8 months by bringing up in original 2 months; Coke-stove gas consumption on average reduces by 18%; And under the situation that the preheating gate of tundish clad is out of shape, burner of the present utility model also can normally use.
Claims (3)
1. continuous casting tundish roasting nozzle, comprise burner shell, air hand-hole pipe, coal gas hand-hole pipe, combustion chamber, flange, air hand-hole pipe is positioned at burner shell one side, coal gas hand-hole pipe is positioned at the burner shell rear side, the combustion chamber is positioned at burner shell, flange is positioned at the burner shell front end, and coal gas hand-hole pipe leads to the combustion chamber, and air hand-hole pipe leads to burner shell; It is characterized in that: the combustion chamber is divided into forward and backward combustion chamber, preceding combustion chamber is that socket type is connected with the after-combustion chamber, preceding combustion chamber stretches out forward, the outer wall of preceding combustion chamber is a thick flange, constitute by refractory material in the flange, flange coats heat resisting steel outward, has the uniform aperture of many rows on the sleeve wall of after-combustion chamber.
2. continuous casting tundish roasting nozzle according to claim 1 is characterized in that: preceding combustion chamber is the conical surface, its front end face diffusion.
3. porous premix tundish roasting nozzle according to claim 1 and 2 is characterized in that: after-combustion chamber sleeve wall has four row's apertures vertically, and every row is along circumferentially being evenly equipped with six apertures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200759563U CN201145278Y (en) | 2007-11-26 | 2007-11-26 | Continuous casting tundish baking combustion nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200759563U CN201145278Y (en) | 2007-11-26 | 2007-11-26 | Continuous casting tundish baking combustion nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201145278Y true CN201145278Y (en) | 2008-11-05 |
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ID=40082158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200759563U Expired - Fee Related CN201145278Y (en) | 2007-11-26 | 2007-11-26 | Continuous casting tundish baking combustion nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201145278Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110579A (en) * | 2021-10-29 | 2022-03-01 | 光大环保技术研究院（南京）有限公司 | Spiral-flow type gas burner suitable for working condition that back pressure of outlet of combustion chamber is positive pressure and working method thereof |
-
2007
- 2007-11-26 CN CNU2007200759563U patent/CN201145278Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110579A (en) * | 2021-10-29 | 2022-03-01 | 光大环保技术研究院（南京）有限公司 | Spiral-flow type gas burner suitable for working condition that back pressure of outlet of combustion chamber is positive pressure and working method thereof |
| CN114110579B (en) * | 2021-10-29 | 2023-11-21 | 光大环保技术研究院（南京）有限公司 | Swirl type gas burner suitable for working condition that back pressure of outlet of combustion chamber is positive pressure and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20161126 |