CN209873002U - Converter tapping hole connecting and fixing device - Google Patents
Converter tapping hole connecting and fixing device Download PDFInfo
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- CN209873002U CN209873002U CN201920449096.8U CN201920449096U CN209873002U CN 209873002 U CN209873002 U CN 209873002U CN 201920449096 U CN201920449096 U CN 201920449096U CN 209873002 U CN209873002 U CN 209873002U
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Abstract
The utility model discloses a connecting and fixing device for a converter steel tapping hole, which comprises a reference plate, a connecting plate, an annular steel plate and a steel tapping hole head brick; the steel tapping hole comprises a multi-section annular brick, a steel pipe penetrates through the middle of the annular brick, annular steel plates are arranged at two ends of the multi-section annular brick, and the annular steel plates are welded with the steel pipe; the reference plate and the connecting plate are sleeved on the brick at the head of the tapping hole, and the reference plate is fixedly connected with the furnace shell; the connecting plate is arranged at the front part of the reference plate, the connecting plate is connected with the reference plate through bolts, and the connecting plate is connected with the steel pipe through local welding. The utility model effectively ensures the reliability of connection and fixation of the steel tapping hole, has accurate positioning of the steel tapping hole, and avoids the problems that the annular gap between the brick of the steel tapping hole and the furnace lining is uneven due to poor positioning of the steel tapping hole, and the filling is not practical when filling refractory materials, so that molten steel enters the gap, and the normal replacement of the steel tapping hole next time is seriously influenced; the phenomenon that the bricks on the steel tapping head fall off and molten steel is scattered during steel tapping is avoided, the damage of the reference plate is avoided, the replacement and the maintenance are convenient, and the labor intensity of field operators is greatly reduced.
Description
Technical Field
The utility model relates to the technical field of metallurgy, in particular to a converter steel tapping hole connecting and fixing device.
Background
The service condition and the service life of the steel-tapping hole are an important control link of converter steelmaking, and for a large converter with a sliding plate slag-stopping system, a special mode is provided for the connection and the fixation of the steel-tapping hole, and the connection and the fixation are safe and firm. However, for the converter without using the sliding plate slag stopping system, the connection and fixation of the steel tapping hole are very difficult, and at present, the main connection and fixation modes of domestic steel mills include welding, wedge-shaped object extrusion, spraying material gap filling and the like, and the following results are shown: 1. the steel tapping hole area has severe environment and high temperature, the welding part is frequently subjected to desoldering, the wedge-shaped object is deformed and shed by heating, the sprayed material is pulverized and the like; 2. the bricks at the steel tapping hole head are not firmly fixed and fall off after the desoldering, the deformation and the falling off and the pulverization, the shape of the steel tapping hole is changed, molten steel is scattered during the steel tapping, the quality of the molten steel is seriously influenced, and the equipment such as a ladle car and the like is easily burnt out by the scattered high-temperature molten steel, so that production accidents are caused; 3. due to poor positioning of the steel tapping hole, an annular gap between a brick of the steel tapping hole and a furnace lining is not uniform, and infilled filling is possible when a refractory material is filled, so that molten steel enters the gap, the normal replacement of the steel tapping hole next time is seriously influenced, and a large amount of manpower and material resources are wasted; meanwhile, the reference plate of the furnace body steel tapping hole is easy to burn out due to the falling of the outer-hole brick, so that the steel tapping hole and the reference plate cannot be firmly and tightly connected when the steel tapping hole is replaced next time. The process is repeated, the quality of molten steel is influenced, the service life of a steel tapping hole is shortened, and the labor intensity of field operation workers is greatly improved. Therefore, it is desired to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The purpose of the invention is as follows: the utility model aims at providing a fixing device is connected to converter tapping hole, the device have effectively guaranteed the tapping hole and connected and fixed reliability, and the tapping hole location is accurate, and molten steel free stream phenomenon when having avoided the oral brick of tapping to drop and tapping has avoided the damage of benchmark board, and it is convenient to change the maintenance, has alleviateed on-the-spot operation workman's intensity of labour by a wide margin.
The technical scheme is as follows: in order to realize the aim, the converter steel-tapping hole connecting and fixing device comprises a reference plate, a connecting plate, an annular steel plate and a whole steel-tapping hole brick; the whole steel-tapping hole brick is formed by connecting a plurality of sections of small annular bricks, a steel pipe penetrates through the middle part of the small annular bricks, annular steel plates are arranged at two ends of the small annular bricks, and the annular steel plates and the steel pipe are welded together, so that the integrity and the connection fastening of the whole steel-tapping hole brick are ensured; the connecting plate is sleeved at the head of the whole steel tapping hole brick, the reference plate is replaced in the period of furnace service and is fixedly connected with a furnace shell steel plate, and the reference plate cannot be replaced in the period of normal production; the connecting plate is arranged at the front part of the reference plate, the connecting plate is connected with the reference plate through bolts, the cross section of the connecting plate is triangular, and the connecting plate and the steel pipe are welded locally, so that the position of the whole steel tapping hole in the furnace body is fixed accurately.
Further, the section of the reference plate is circular.
Further, open 3 first bolt holes on the benchmark board, 3 first bolt holes evenly distributed are on the benchmark board.
Furthermore, 3 second bolt holes are formed in the connecting plate, and the positions of the second bolt holes correspond to the positions of the 3 first bolt holes in the reference plate.
Further, the first bolt hole is a non-through hole, and the second bolt hole is a through hole.
Further, the reference plate is made of a steel plate having a thickness of 70 mm; the depth of the first bolt hole is 40 mm.
Has the advantages that: compared with the prior art, the utility model has the following apparent advantage: the device effectively ensures the connection and fixation reliability of the steel tapping hole, and the steel tapping hole is accurately positioned, so that the phenomenon that molten steel enters a gap between a brick and a furnace lining cannot occur; when the steel tapping hole is replaced, the connecting plate is convenient to detach, the new steel tapping hole is fast and convenient to position and fasten, the bricks on the steel tapping hole and the whole steel tapping hole can be better protected to be intact, the reference plate and the connecting plate are not washed by molten steel during the use period of the steel tapping hole to cause damage, the steel tapping hole is free of abnormal phenomena such as free flow, and the time for replacing the steel tapping hole is shortened by 40 minutes compared with the time for replacing the steel tapping hole in the prior art; in the prior art, the tapping hole is changed once every 140 furnaces, the average service life of the improved tapping hole of the utility model reaches about 280 furnaces, and the 140 furnaces are improved on the same scale; meanwhile, in the service life of the steel tapping hole, no maintenance is needed, and an unplanned steel tapping hole is not formed due to the fact that a connecting plate is damaged or bricks on the steel tapping hole are broken, so that the continuity of normal production is guaranteed, and the labor intensity of field operation workers is greatly reduced.
Drawings
FIG. 1 is a schematic structural view of a connecting and fixing device for a steel tapping hole of a converter according to the present invention;
FIG. 2 is a schematic cross-sectional view of a datum plate;
FIG. 3 is a cross-sectional view of a web;
FIG. 4 is a schematic cross-sectional view of an annular steel plate;
FIG. 5 is a schematic view showing the overall structure of the connecting and fixing device for each component and the steel tapping hole of the converter.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 5, the new structural type of the connecting and fixing device for the steel tapping hole of the converter provided by the embodiment comprises a reference plate 1, a connecting plate 3, an annular steel plate 5 and a steel tapping hole head brick 6; the steel pipe runs through the steel tapping hole, a plurality of sections of ring bricks are sleeved outside the steel pipe, annular steel plates 5 are arranged at two ends of the plurality of sections of ring bricks, and the annular steel plates 5 are welded with the steel pipe; the steel tapping hole head brick 6 is sleeved with a connecting plate 3, the connecting plate is arranged in front of the reference plate, and the connecting plate is fixedly connected with the reference plate through bolts when the steel tapping hole is replaced.
The section of the reference plate 1 is circular, is fixedly connected with a furnace shell, and is not allowed to be detached in the normal production process; the reference plate 1 is made of a steel plate with the thickness of 70 mm; 3 first bolt holes 2 are uniformly formed in the reference plate 1 at equal angles, and the first bolt holes 2 are non-through holes and have the depth of 40 mm; the connecting plate 3 is triangle-shaped, adopts the steel sheet preparation of thickness 10mm, has seted up 3 second bolt holes 4 on the connecting plate 3, and the second bolt hole is the perforating hole, and the position of second bolt hole corresponds with the position of three first bolt holes on the benchmark board 1. The connecting plate 3 is sleeved on a brick 6 at the steel tapping hole head and is connected with the steel pipe through local welding, so that a set of complete steel tapping hole is formed. The connection mode effectively guarantees the connection and fixation reliability of the steel tapping hole, the steel tapping hole is accurately positioned, the damage caused by that the reference plate and the connecting plate are washed by molten steel during the use period of the steel tapping hole can be avoided, and abnormal phenomena such as scattered flow and the like of the steel tapping hole are avoided.
The steel tapping hole belongs to a vulnerable part, when the steel tapping hole is replaced, a converter body is tilted to 150 degrees, three bolts on a connecting plate are disassembled by a pneumatic wrench, the connecting plate is taken down, an original steel tapping hole brick is crushed and cleaned by a hole drilling (expanding) machine to establish a cylindrical channel, a set of complete steel tapping hole is arranged at the front section of a reference plate, and a new steel tapping hole brick is arranged in the cylindrical channel; the first bolt holes 2 on the reference plate and the second bolt holes 4 on the connecting plate are aligned, the bolts are fastened by a pneumatic wrench, so that the steel tapping hole is always positioned at the center of the cylindrical channel, a ring gap of about 3 cm between a steel tapping hole brick and a lining refractory material is filled with a refractory material, and the steel tapping hole brick and the lining refractory material can be put into use after being fixed and sintered. Therefore, when the steel tapping hole is replaced, the connecting plate is convenient to detach, the new steel tapping hole is fast and convenient to position and fasten, and the intact bricks of the steel tapping hole and the whole steel tapping hole can be better protected.
Claims (6)
1. A converter tapping hole connecting and fixing device is characterized in that: comprises a reference plate (1), a connecting plate (3), an annular steel plate (5) and a steel tapping hole head brick (6); the steel tapping hole comprises a multi-section annular brick, a steel pipe penetrates through the middle of the annular brick, annular steel plates (5) are arranged at two ends of the multi-section annular brick, and the annular steel plates (5) are welded with the steel pipe;
the connecting plate (3) is sleeved on a brick (6) at the head of the tapping hole, and the reference plate (1) is fixedly connected with the furnace shell; the connecting plate (3) is arranged at the front part of the reference plate (1), the cross section of the connecting plate (3) is triangular, the connecting plate (3) is connected with the reference plate (1) through bolts, and the connecting plate (3) is connected with the steel pipe through local welding.
2. The converter tap hole attachment and fixation device as recited in claim 1, further comprising: the section of the reference plate (1) is circular.
3. The converter tap hole attachment and fixation device as recited in claim 1, further comprising: open on benchmark board (1) and have 3 first bolt holes (2), 3 first bolt holes evenly distributed are on the benchmark board.
4. The converter tap hole attachment and fixation device as recited in claim 1, further comprising: and 3 second bolt holes (4) are formed in the connecting plate (3), and the positions of the second bolt holes correspond to the positions of the 3 first bolt holes in the reference plate (1).
5. The converter tap hole attachment and fixation device as recited in claim 1, further comprising: the first bolt hole is a non-through hole, and the second bolt hole is a through hole.
6. The converter tap hole attachment and fixation device as recited in claim 5, further comprising: the reference plate (1) is made of a steel plate with the thickness of 70 mm; the depth of the first bolt hole is 40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920449096.8U CN209873002U (en) | 2019-04-03 | 2019-04-03 | Converter tapping hole connecting and fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920449096.8U CN209873002U (en) | 2019-04-03 | 2019-04-03 | Converter tapping hole connecting and fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209873002U true CN209873002U (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920449096.8U Active CN209873002U (en) | 2019-04-03 | 2019-04-03 | Converter tapping hole connecting and fixing device |
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| Country | Link |
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| CN (1) | CN209873002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763798A (en) * | 2020-06-18 | 2020-10-13 | 钢铁研究总院 | Converter tapping hole, converter and converter building and tapping method |
-
2019
- 2019-04-03 CN CN201920449096.8U patent/CN209873002U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763798A (en) * | 2020-06-18 | 2020-10-13 | 钢铁研究总院 | Converter tapping hole, converter and converter building and tapping method |
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