CN201680704U - Small center furnace cover of electric arc furnace - Google Patents
Small center furnace cover of electric arc furnace Download PDFInfo
- Publication number
- CN201680704U CN201680704U CN2010202088137U CN201020208813U CN201680704U CN 201680704 U CN201680704 U CN 201680704U CN 2010202088137 U CN2010202088137 U CN 2010202088137U CN 201020208813 U CN201020208813 U CN 201020208813U CN 201680704 U CN201680704 U CN 201680704U
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- CN
- China
- Prior art keywords
- water cooling
- furnace cover
- cooling tube
- water
- refractory material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a small center furnace cover of an electric arc furnace, which comprises a fire-resistance material furnace cover body (1) and an electrode hole (2). The utility model is characterized in that a water cooling pipe (3) is arranged in the fire-resistance material furnace cover body (1) and is completely arranged in the fire-resistance material furnace cover body (1), a water inlet end (4) and a water outlet end (5) of the water cooling pipe (3) are arranged on the upper surface of the fire-resistance material furnace cover body (1) near the outer edge, the water inlet end (4) and the water outlet end (5) of the water cooling pipe (3) exposed out of the upper surface of the fire-resistance material furnace cover body (1) are outwards bended in the approximately horizontal direction to extend out of the outer edge of the fire-resistance material furnace cover body (1), and the whole water cooling pipe (3) forms a closed loop for cooling. Through the embedded arrangement of a water cooling pipeline in the fire-resistance material furnace cover body of the small center furnace cover of the electric arc furnace, the utility model realizes the cooling effect through water introduction, reduces the temperature of the small center furnace cover, reduces the high-temperature chemical etching speed, reduces the high-temperature peeling, and greatly prolongs the service life.
Description
Technical field
The utility model belongs to metallurgical technology field, is the improvement to the little bell in converter center, relates in particular to the little bell in a kind of electric arc furnaces center.
Background technology
Modern electric arc furnaces bell generally is made up of big bell of water-cooled and center port lid, and the little bell in center also claims bell trigonum or central lid.The little bell in center is generally anti-material and makes, its effect: the one, and the heat in arc furnace smelting procedure shielding arc light and stove reduces heat and scatters and disappears, protection furnace roof equipment; The 2nd, prevent that the big bell of water-cooled from joining the electric starting the arc and beating leakage, reduce unnecessary heat and stop.But along with the shortening in electric arc furnace smelting cycle, unit interval energy input strengthens, the particularly increase of oxygen supply intensity, and chemical reaction velocity sharply increases, and forms the oxidizing atmosphere of high temperature, high pressure in the stove, and the condition of work of the little bell in center worsens.The high temperature furnace slag of the washing away of high temperature gas flow, splash and the chemical erosion of gas reduce the center port lid life-span significantly.Because the center port lid life-span is low and unstable, can not realize that more switching center9's port lid is synchronous with the plan blowing out, influence the continuity of electric arc furnace smelting, finally influence the stability of continuous casting.Not only cause production efficiency to reduce, and influence product quality.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, and the little bell in electric arc furnaces center of a kind of high life is provided, and avoids the big bell of water-cooled to join the electric starting the arc simultaneously and beats leakage.Realize that the technical scheme that purpose of the present invention is taked is: this little bell includes refractory material bell body and the electrode hole with the refractory material cast molding, be provided with water cooling tube in the refractory material bell body, and water cooling tube is arranged in the refractory material bell body fully, water cooling tube turnover water end (W.E.) is arranged on the upper surface of refractory material bell body near outer rim, expose the outside level of approximation direction of the water cooling tube entrance end bending of refractory material bell body upper surface, stretch out the external edge of refractory material bell.Whole water cooling tube forms closed circuit cooling.Be to increase cooling surface, the water cooling tube shape that in refractory material bell body, takes the shape of the letter U, the outer surface of water cooling tube is provided with fixedly reinforcing bar, and water cooling tube closely is connected with refractory material bell body.
The utility model is by burying the water-cooled pipeline underground in the refractory material bell body of the little bell in electric arc furnaces center, water flowing is cooled off, and has reduced the temperature of the little bell in center, has reduced the high temeperature chemistry erosive velocity, has reduced high temperature and has peeled off, and the life-span increases considerably; The water cooling tube outer surface is provided with fixedly reinforcing bar, has increased the bonding tightness of water cooling tube and refractory material bell body; Water cooling tube plays the effect of skeleton, and in-out end stretches out the external edge of refractory material bell in addition, can avoid center port lid to use the later stage to crash in the stove.The utility model also is applicable to the little bells in smelting furnace center such as ladle refining furnace.
Description of drawings
Fig. 1 is a vertical view of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1 in the utility model;
Fig. 3 is the B-B cutaway view of Fig. 1 in the utility model.
Among the figure, 1, refractory material bell body, 2, electrode hole, 3, water cooling tube, 4, water inlet end, 5, the water side, 6, fixing reinforcing bar.
The specific embodiment
With reference to accompanying drawing, this little bell includes refractory material bell body 1 and electrode hole 2, be provided with water cooling tube 3 in the refractory material bell body 1, and water cooling tube 3 is arranged in the refractory material bell body 1 fully, water cooling tube 3 water inlet ends 4 and water side 5 are arranged on the upper surface of refractory material bell body 1 near outer rim, expose the water inlet end 4 and the port of export 5 outside level of approximation direction bendings of the water cooling tube 3 of refractory material bell body 1 upper surface, stretch out refractory material bell body 1 outward flange.Whole water cooling tube 3 forms closed circuit cooling.Be to increase cooling surface, water cooling tube 3 shape that in refractory material bell body 1, takes the shape of the letter U, the outer surface of water cooling tube 3 is provided with fixedly reinforcing bar 6, and water cooling tube 3 and refractory material bell body 1 are combined closely.
The utility model on the make before the little bell of the heart, is embedded into water cooling tube, and water cooling tube also plays the effect of skeleton, and the center port of avoiding covers local bulk and caves in.Because the water flowing cooling, center port interior surface is to water cooling tube, and temperature reduces gradually, lower near near the regional temperature the water cooling tube, can eliminate the different stress that cause with the bell body heat coefficient of expansion of metal tube under the hot conditions.The water cooling tube outer surface is welded with the long fixedly reinforcing bar of 5～20mm, and water cooling tube and the anti-material of bell body are combined closely.Water cooling tube is the heat-resistance stainless steel pipe, must not form closed loop around electrode and connect.
Claims (3)
1. little bell in electric arc furnaces center, include refractory material bell body (1) and electrode hole (2), it is characterized in that being provided with in the refractory material bell body (1) water cooling tube (3), and water cooling tube (3) is arranged in the refractory material bell body (1) fully, water cooling tube (3) water inlet end (4) and water side (5) are arranged on the upper surface of refractory material bell body (1) near outer rim, the water inlet end (4) and the outwards level of approximation direction bending of the port of export (5) of exposing the water cooling tube (3) of refractory material bell body (1) upper surface, stretch out refractory material bell body (1) outward flange, whole water cooling tube (3) forms closed circuit cooling.
2. according to the little bell in the said electric arc furnaces of claim 1 center, it is characterized in that water cooling tube (3) shape that in refractory material bell body (1), takes the shape of the letter U.
3. according to the little bell in the said electric arc furnaces of claim 1 center, it is characterized in that the outer surface of water cooling tube (3) is provided with fixedly reinforcing bar (6), water cooling tube (3) and refractory material bell body (1) are combined closely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202088137U CN201680704U (en) | 2010-05-31 | 2010-05-31 | Small center furnace cover of electric arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202088137U CN201680704U (en) | 2010-05-31 | 2010-05-31 | Small center furnace cover of electric arc furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201680704U true CN201680704U (en) | 2010-12-22 |
Family
ID=43345745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202088137U Expired - Fee Related CN201680704U (en) | 2010-05-31 | 2010-05-31 | Small center furnace cover of electric arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201680704U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839627A (en) * | 2010-05-31 | 2010-09-22 | 莱芜钢铁集团有限公司 | Small cover on center of arc furnace |
| CN103575092A (en) * | 2012-08-08 | 2014-02-12 | 代忠 | Furnace cover of titanium and iron separation electric arc furnace |
-
2010
- 2010-05-31 CN CN2010202088137U patent/CN201680704U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839627A (en) * | 2010-05-31 | 2010-09-22 | 莱芜钢铁集团有限公司 | Small cover on center of arc furnace |
| CN103575092A (en) * | 2012-08-08 | 2014-02-12 | 代忠 | Furnace cover of titanium and iron separation electric arc furnace |
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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 |
Granted publication date: 20101222 Termination date: 20150531 |
|
| EXPY | Termination of patent right or utility model |