CN203807500U - Hot blast stove scale weld cracking preventing structure - Google Patents
Hot blast stove scale weld cracking preventing structure Download PDFInfo
- Publication number
- CN203807500U CN203807500U CN201420214153.1U CN201420214153U CN203807500U CN 203807500 U CN203807500 U CN 203807500U CN 201420214153 U CN201420214153 U CN 201420214153U CN 203807500 U CN203807500 U CN 203807500U
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- scale
- stove
- weld
- hot blast
- blast stove
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Abstract
The utility model discloses a hot blast stove scale weld cracking preventing structure, relating to the technical field of hot blast stove equipment accessories. The hot blast stove scale weld cracking preventing structure comprises a support fixed on the outer wall of hot blast stove scale and a cooling water elbow opposite to or above a scale weld, wherein the cooling water elbow is fixed on the support, one end of the cooling water elbow is closed and has a radian consistent with that of the outer wall of the scale, and more than six water outlets are uniformly formed in one side of the cooling water elbow corresponding to the scale. In the working process of a hot blast stove, the cooling water elbow uninterruptedly sprays cooling water to the reddish weld through the water outlets to cool the weld, so that internal stress accumulation and scale cracking at the weld can be avoided. In this way, the scale weld cracking accident is eliminated, the labor intensity of welding the scale by an operator is alleviated, the accidents of wind running and encapsulation openings caused by cracking of the hot blast stove scale are avoided, and the synergy is significant. The hot blast stove scale weld cracking preventing structure disclosed by the utility model is simple, and can be used for effectively eliminating the internal stress of the scale weld and preventing the scale weld from cracking.
Description
Technical field
The utility model relates to hot-blast furnace equipment attachment technique field.
Background technology
Hotblast stove is one of visual plant in ironmaking system, and its effect is to be sent to blast furnace the cold wind of sending from blast furnace blowing engine is heated to hot blasts more than 1200 degree by 120 degree.
In actual production, hotblast stove generally adopts two burnings one to send, or two burn two operating method of sending.Burn stove chamber temperature the highest at 1350 degree, flue-gas temperature, at 350 degree, is generally incubated at 1 hour 30 minutes, by checker brick heating in hotblast stove.Hot blast temperature drops to 1000 while spending, and heating stops changing stove air-supply; The out-of-blast beginning of stove of former air-supply heated.Cold wind temperature is generally 120 degree, from hotblast stove bottom, enters, and is heated to top exit temperature reaches 1200 degree left and right by checker brick.So alternately burn stove air-supply, air-supply burning stove.Particularly upper part of hotblast stove, because the temperature variation of stove skin is large especially, causes first half stove intracutaneous stress to strengthen, and the place of the indivedual composition inequalities of steel plate and the solid weld seam of not prison welding are just opened like this.Little owing to being that negative pressure stove skin changes while burning stove, and stove skin bears during air-supply, be the pressurized air of high pressure-temperature oxygen enrichment, particularly cracking place just as gas cutting moment breach star flower flash into a hole, race wind is serious.Run wind and can cause the fluctuation of blast furnace air quantity, time have the air port accident of filling and the stove accident that has some setbacks to occur, affect every year ten million yuan of benefit.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of simple in structure, can effectively eliminate stove skin weld seam internal stress, prevent the anti-hotblast stove stove skin weld cracking structure that weld seam snaps.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of anti-hotblast stove stove skin weld cracking structure, comprise and be fixed on the support of hotblast stove stove skin outer wall and over against stove skin weld seam or the weld seam water coolant bend pipe of side on the upper side, described water coolant bend pipe is fixed on support, described water coolant bend pipe one end is sealed and is had the radian consistent with stove skin outer wall, and the corresponding stove skin of described water coolant bend pipe weld seam one side is provided with 6 above posticums.
Preferably, be provided with the return flume being fixed on stove skin outer wall under described water coolant bend pipe, described return flume bottom is provided with return water pipe.
Preferably, the wall thickness of described return flume is 2mm, the high 200mm of being, the wide 300mm of being, described water coolant bend pipe diameter is 25mm, and described posticum diameter is 6mm, and the spacing of adjacent posticum is 100mm.
Adopt the beneficial effect that technique scheme produces to be: by support, to be fixed on the stove skin weld seam right on of hotblast stove or the water coolant bend pipe in side on the upper side, the corresponding stove skin of water coolant bend pipe direction is provided with 6 above posticums, in hotblast stove working process, water coolant is continual to cool to rubescent weld seam, the water coolant of spray can avoid that the internal stress of commissure is gathered, stove skin cracking, the water flowing down along weld seam is back to return flume, and then by return water pipe, is back to the water leg of cooling water system.Eliminated like this stove skin weld cracking accident, not only alleviated the labour intensity of operator's soldering stove skin, and avoided the accident of filling with air port because of the race wind that hotblast stove stove skin cracking causes to occur, synergy is remarkable, ten million yuan of annual synergy.The utility model is simple in structure, can effectively eliminate stove skin weld seam internal stress, can prevent stove skin weld cracking.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the partial enlarged drawing of I in Fig. 1;
In figure: 1-support, 2-return flume, 3-return water pipe, 4-hotblast stove, 5-weld seam, 6-water coolant bend pipe, 7-posticum.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As Fig. 1, 2, a kind of anti-hotblast stove stove skin weld cracking structure shown in 3, comprise and be fixed on the support 1 of hotblast stove 4 stove skin outer walls and over against stove skin weld seam 5 or the weld seam 5 water coolant bend pipe 6 of side on the upper side, described water coolant bend pipe 6 is fixed on support 1, described water coolant bend pipe 6 one end sealings, and there is the radian consistent with stove skin outer wall, corresponding stove skin one side of described water coolant bend pipe 6 is provided with 6 above posticums 7, under described water coolant bend pipe 6, be provided with the return flume 2 being fixed on stove skin outer wall, described return flume 2 bottoms are provided with return water pipe 3, the wall thickness of described return flume 2 is 2mm, height is 200mm, wide is 300mm, described water coolant bend pipe 6 diameters are 25mm, described posticum 7 diameters are 6mm, the spacing of adjacent posticum 7 is 100mm.
During enforcement, by support 2 be fixed on stove skin weld seam 5 right ons of hotblast stove 4 or on the upper side side a water coolant bend pipe 6, the corresponding stove skin of water coolant bend pipe 6 weld seam 5 directions are provided with 6 above posticums 7, in hotblast stove 4 working process, can make that water coolant is continual to cool to rubescent weld seam 5, the water coolant of spray can avoid that the internal stress at weld seam 5 places is gathered, stove skin cracking; According to the outside dimension of hotblast stove 4, of the thick iron sheet of 2mm, make again the return flume 2 of wide 300mm, high 200mm, return flume 2 one sides are provided with the radian consistent with stove skin outer wall and are fixed on stove skin outer wall, and the arc edge lengths that is fixed on stove skin outer wall is greater than 2 times of welding bead length, return flume 2 horizontal weldings be connected on stove skin weld seam 5 under 500mm place, the water coolant spraying by posticum 7 is ejected on weld seam 5 and along stove skin outer wall and flows down, and be back to return flume 2, and then by return water pipe 3, be back to the water leg of the cooling water system of hotblast stove 4.
In sum, utilize the utility model not only to eliminate stove skin weld cracking accident, the corresponding labour intensity that alleviates operator's soldering stove skin, has also avoided the accident of filling with air port because of the race wind that hotblast stove stove skin cracking causes to occur, synergy is remarkable, ten million yuan of annual synergy.The utlity model has simple in structurely, can effectively eliminate the feature of stove skin weld seam internal stress, effect is remarkable, can prevent that stove skin weld seam from ftractureing again, has very strong practicality.
Claims (3)
1. an anti-hotblast stove stove skin weld cracking structure, it is characterized in that: comprise being fixed on the support (1) of hotblast stove (4) stove skin outer wall and over against stove skin weld seam (5) or weld seam (5) the water coolant bend pipe (6) of side on the upper side, described water coolant bend pipe (6) is fixed on support (1), described water coolant bend pipe (6) one end is sealed and is had the radian consistent with stove skin outer wall, and the corresponding stove skin of described water coolant bend pipe (6) weld seam one side is provided with 6 above posticums (7).
2. anti-hotblast stove stove skin weld cracking structure according to claim 1, is characterized in that: under described water coolant bend pipe (6), be provided with the return flume (2) being fixed on stove skin outer wall, described return flume (2) bottom is provided with return water pipe (3).
3. anti-hotblast stove stove skin weld cracking structure according to claim 2, it is characterized in that: the wall thickness of described return flume (2) is 2mm, the high 200mm of being, the wide 300mm of being, described water coolant bend pipe (6) diameter is 25mm, described posticum (7) diameter is 6mm, and the spacing of adjacent posticum (7) is 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214153.1U CN203807500U (en) | 2014-04-29 | 2014-04-29 | Hot blast stove scale weld cracking preventing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214153.1U CN203807500U (en) | 2014-04-29 | 2014-04-29 | Hot blast stove scale weld cracking preventing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203807500U true CN203807500U (en) | 2014-09-03 |
Family
ID=51446283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420214153.1U Expired - Fee Related CN203807500U (en) | 2014-04-29 | 2014-04-29 | Hot blast stove scale weld cracking preventing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203807500U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702063A (en) * | 2015-11-17 | 2017-05-24 | 鞍钢股份有限公司 | Method for cooling air leaking flange of supporting plate of hot blast valve |
| CN110306001A (en) * | 2018-03-27 | 2019-10-08 | 宝山钢铁股份有限公司 | Protective cover for blast furnace cooling board component |
-
2014
- 2014-04-29 CN CN201420214153.1U patent/CN203807500U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702063A (en) * | 2015-11-17 | 2017-05-24 | 鞍钢股份有限公司 | Method for cooling air leaking flange of supporting plate of hot blast valve |
| CN110306001A (en) * | 2018-03-27 | 2019-10-08 | 宝山钢铁股份有限公司 | Protective cover for blast furnace cooling board component |
| CN110306001B (en) * | 2018-03-27 | 2021-11-16 | 宝山钢铁股份有限公司 | Protective cover for cooling plate assembly of blast 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20170429 |