CN2521223Y - Stress reducing water-cooled furnace mouth - Google Patents
Stress reducing water-cooled furnace mouth Download PDFInfo
- Publication number
- CN2521223Y CN2521223Y CN 02212664 CN02212664U CN2521223Y CN 2521223 Y CN2521223 Y CN 2521223Y CN 02212664 CN02212664 CN 02212664 CN 02212664 U CN02212664 U CN 02212664U CN 2521223 Y CN2521223 Y CN 2521223Y
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- stress
- water
- cooling
- furnace water
- cooling mouth
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Abstract
The utility model relates to a stress-lessening water-cooling furnace for steelmaking furnace usage of steel enterprises, relating to the metallurgical facilities. The furnace comprises a stress-lessening water-cooling furnace body, cooling water-pipes and a break arranged on the stress-lessening water-cooling furnace body. The break is disposed on the stress-lessening water-cooling furnace body along the radial direction. An inner coil of the stress-lessening water-cooling furnace body is cooled by a special-purpose cooling water-pipe, and the other cooling water-pipe connected by a plurality of cooling water-pipes cools the rest portion of the stress-lessening water-cooling furnace body. With the existence of the break, the stress which is produced by the unbalance heating absorbed by each portion of the stress-lessening water-cooling furnace body is obviously reduced. The inner coil of the stress-lessening water-cooling furnace body is cooled by the special-purpose cooling water-pipe, then the cooling effect is reinforced, heating in the position of the inner coil is reduced, and then the stress is decreased. Resulting from the decreased stress, cracks generated by the heat stress of the stress-lessening water-cooling furnace are minimized. Consequently, the durability of the stress-lessening water-cooling furnace is prolonged.
Description
The utility model be use on a kind of iron and steel enterprise steel-making converter subtract the stress furnace water-cooling mouth, relate to smelting equipment.
The life-span of furnace water-cooling mouth directly has influence on the furnace life and the production of converter.Existing furnace water-cooling mouth is a foundry goods that integral body is circular, and its inside is cast into the multi-ring annular water-cooled tube, feeds the water quench fire door in the water-cooled tube during furnace water-cooling mouth work, so that fire door is not by high temperature institute's scaling loss or fusing.The modal reason of scrapping of furnace water-cooling mouth is a crackle, the furnace water-cooling mouth not long crackle that just occurs duration of service that has.Though the material to furnace water-cooling mouth has been carried out many improvement, the situation of crackle still often takes place.Analyze its reason, mainly be because the heat imbalance that the furnace water-cooling mouth each several part is subjected to: the liquid metal during steel-making in the converter and the turnover of slag all will be passed through from furnace water-cooling mouth, and have molten steel or slag to be splashed on the fire door often, but also a large amount of radiant heat and the invasion and attack of high-temperature flue gas will be subjected to steel-making in the converter time.These liquid metal and slag and high-temperature flue gas mainly pass through from the inner ring of furnace water-cooling mouth, radiant heat in the converter that the inner ring of furnace water-cooling mouth is subjected to is also maximum, when molten steel or slag splash out in the stove, adhere to also maximum on the furnace water-cooling mouth inner ring, after being heated, the furnace water-cooling mouth inner ring to expand, and the less calories that other positions of furnace water-cooling mouth body are subjected to, swell increment is also few, when the huge thermal expansion stress of furnace water-cooling mouth inner ring surpasses the intensity at other position of furnace water-cooling mouth body, crackle just appears in the furnace water-cooling mouth body, because the variation repeatedly of stress, the water-cooled tube of cracks is broken to leak, and furnace water-cooling mouth is scrapped.
The utility model provide a kind of can reduce thermal stresses effectively subtract the stress furnace water-cooling mouth.
The scheme that the utility model adopts is: what subtract the whole loop structure of stress furnace water-cooling mouth body radially has a fracture, and annulus is cut off.Subtract the Ω shape water-cooled tube cooling of the inner ring of stress furnace water-cooling mouth by special use, another root water-cooled tube is formed by connecting by many Ω shape water-cooled tubes, and cooling subtracts the rest part of stress furnace water-cooling mouth body.Fracture forms by cutting off, and cuts off by materials such as taggers to brush the refractory paint casting mold of packing into when the casting, and after molten iron poured into casting mold, the molten iron that cuts off both sides was cut off separately, made to subtract stress furnace water-cooling mouth body at fracture of partition place formation.
The shape of fracture can be made curved surface, to prevent to subtract stress furnace water-cooling mouth generation buckling deformation, and for buckling deformation little subtract the stress furnace water-cooling mouth, fracture can make planar, the plane fracture can be added to cut off and forms by when casting, also can be by being processed to form, by there not being other to cut off material in the fracture that is processed to form.
After the utility model adopts above structure, when subtracting the work of stress furnace water-cooling mouth, the heat that the fire door inner ring is subjected to is big, bigger expansion occurs, and the less calories that other positions of fire door body are subjected to, swell increment is also few, at this moment owing to the existence of fracture on the fire door body, can change the size in incision position gap, thereby stress is reduced to minimum, because water-cooled tube is a Ω shape, STRESS VARIATION repeatedly can not influence water-cooled tube.The fire door inner ring is owing to special-purpose water-cooled tube cooling, cool off and strengthen, and the also corresponding heat that reduces this place has reduced stress.Because reducing of stress subtracts the stress furnace water-cooling mouth and also reduced by the crackle that thermal stresses produces, prolonged in the life-span that subtracts the stress furnace water-cooling mouth.
Below in conjunction with accompanying drawing embodiment of the present utility model is done detailed description.
Figure one is the front view of the utility model embodiment one, two, wherein 1 for subtracting stress furnace water-cooling mouth body, 2 for cooling off the Ω shape water-cooled tube that subtracts stress furnace water-cooling mouth inner ring, 3 subtract the water-cooled tube that is formed by many Ω shape pipe coupling at other position of stress furnace water-cooling mouth body for cooling, 4 for subtracting the fracture on the stress furnace water-cooling mouth body, and 5 for subtracting stress furnace water-cooling mouth inner ring.
Figure two is the M-N-O-K sectional view of the front view of the utility model embodiment one, two;
Figure three is the A-A broken section enlarged view of the utility model embodiment one front view;
Figure four is the A-A broken section enlarged view of the utility model embodiment two front views;
Shown in figure one, in embodiment one, two, there is a fracture 4 that the circular stress furnace water-cooling mouth body 1 that subtracts is disconnected.Subtract a Ω shape water-cooled tube 2 coolings of the inner ring 5 of stress furnace water-cooling mouth body 1 by special use, another root water-cooled tube 3 is formed by connecting by many Ω shape water-cooled tubes, and cooling subtracts the rest part of stress furnace water-cooling mouth body 1.
In embodiment one, fracture 4 shapes are curved surfaces, to prevent water black furnace mouth body 1 buckling deformation take place.Fracture 4 is to be formed by the partition shown in figure three, cuts off by materials such as taggers to brush the refractory paint casting mold of packing into when the casting, and after molten iron poured into casting mold, the molten iron that cuts off both sides was cut off separately, made fire door form a fracture at the partition place.
In embodiment two, fracture 4 shapes are planes, no longer are curves as the shape at partition place among the figure four, but straight line.For buckling deformation little subtract the stress furnace water-cooling mouth, fracture can make planar.Fracture can also can adopt method for processing to form with the same method manufacturing of embodiment one, does not have other to cut off material in the fracture that adopts working method to make.
When subtracting the work of stress furnace water-cooling mouth, the heat that its inner ring 5 is subjected to is big, bigger expansion appears, and the less calories that other positions are subjected to, swell increment is also few, at this moment owing to subtract the existence of fracture 4 on the stress furnace water-cooling mouth body 1, the fire door body can change the size in incision position gap, thereby stress is reduced to minimum, because water-cooled tube is a Ω shape, STRESS VARIATION repeatedly can not influence water-cooled tube.Subtract stress furnace water-cooling mouth inner ring 5 because 2 coolings of special-purpose water-cooled tube are arranged, cooling is strengthened, and the also corresponding heat that reduces this place has reduced stress.Because reducing of stress subtracts the stress furnace water-cooling mouth and also reduced by the crackle that thermal stresses produces, the life-span prolongs.
Claims (7)
1, a kind of being used for subtracts the stress furnace water-cooling mouth on iron and steel enterprise's steel-making converter fire door, and it is characterized in that: as shown in drawings, subtracting has a fracture 4 on the stress furnace water-cooling mouth body 1, and circular fire door body is cut off.Subtract a Ω shape water-cooled tube 2 coolings of stress furnace water-cooling mouth inner ring 5 by special use, another root water-cooled tube 3 is formed by connecting by many Ω shape water-cooled tubes, and cooling subtracts the rest part of stress furnace water-cooling mouth body 1.
2, the stress furnace water-cooling mouth that subtracts according to claim 1, cooling fire door inner ring 5 has many with the water-cooled tube 3 of outside part.
3, the stress furnace water-cooling mouth that subtracts according to claim 1, the shape of fracture 4 is curved surfaces.
4, the stress furnace water-cooling mouth that subtracts according to claim 1, the shape of fracture 4 is planes, fracture 4 is perpendicular to and subtracts stress furnace water-cooling mouth body 1.
5, the stress furnace water-cooling mouth that subtracts according to claim 1, the shape of fracture 4 is planes, this plane is not orthogonal to and subtracts stress furnace water-cooling mouth body 1.
6, according to the described stress furnace water-cooling mouth that subtracts of claim 1, fracture 4 forms by cutting off, and cuts off by materials such as taggers to brush the refractory paint casting mold of packing into when casting, after molten iron pours into casting mold, the molten iron that cuts off both sides is cut off separately, makes fire door form a fracture at the partition place.
7, according to the described furnace water-cooling mouth of claim 1, fracture 4 does not have other to cut off material by being processed to form in the fracture 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212664 CN2521223Y (en) | 2002-02-05 | 2002-02-05 | Stress reducing water-cooled furnace mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212664 CN2521223Y (en) | 2002-02-05 | 2002-02-05 | Stress reducing water-cooled furnace mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2521223Y true CN2521223Y (en) | 2002-11-20 |
Family
ID=33692305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02212664 Expired - Fee Related CN2521223Y (en) | 2002-02-05 | 2002-02-05 | Stress reducing water-cooled furnace mouth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2521223Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061354A (en) * | 2011-01-27 | 2011-05-18 | 马鞍山钢铁股份有限公司 | Water-cooling furnace opening structure of converter |
| CN107723409A (en) * | 2017-10-11 | 2018-02-23 | 上海宝钢铸造有限公司 | Cooling tube anticollision furnace water-cooling mouth |
-
2002
- 2002-02-05 CN CN 02212664 patent/CN2521223Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061354A (en) * | 2011-01-27 | 2011-05-18 | 马鞍山钢铁股份有限公司 | Water-cooling furnace opening structure of converter |
| CN107723409A (en) * | 2017-10-11 | 2018-02-23 | 上海宝钢铸造有限公司 | Cooling tube anticollision furnace water-cooling mouth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |