CN213951254U - LF refining furnace door with water inlet and return pipe rotating device - Google Patents
LF refining furnace door with water inlet and return pipe rotating device Download PDFInfo
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- CN213951254U CN213951254U CN202022687363.0U CN202022687363U CN213951254U CN 213951254 U CN213951254 U CN 213951254U CN 202022687363 U CN202022687363 U CN 202022687363U CN 213951254 U CN213951254 U CN 213951254U
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Abstract
The utility model relates to a to LF refining furnace gate that has into wet return rotary device that LF refining furnace gate advances wet return improves and guarantees to avoid frequent leaking, including the furnace gate body that has inside water cavity, communicating return communicating pipe with the inside water cavity of furnace gate body and intake communicating pipe, return communicating pipe and intake communicating pipe communicate with each other with water path in the rotatory pivot both ends of leading to the water respectively, have the water return rotary joint and the rotary joint that advances of leading to rather than the switch-on respectively on the rotatory pivot end of leading to water that both ends have the water path, return rotary joint and the rotary joint that advances to the water again respectively with the fixed water pipe of return and the fixed water pipe of intaking put through mutually, the utility model discloses a advance to the furnace gate, the structure of wet return is reformed transform, has solved the metal collapsible tube problem of leaking because of buckling and has gone into the hydrogen white point quality risk that the molten steel arouses because of the water droplet.
Description
Technical Field
The utility model relates to an improve LF refining furnace gate, in particular to improve LF refining furnace gate that has into wet return rotary device and guarantee to avoid frequently leaking to the wet return of LF refining furnace gate.
Background
An LF refining furnace (abbreviated as LF furnace) is a key device for refining molten steel. A furnace door is arranged on a water-cooled furnace cover of a key component of the LF furnace, and is used for observing the conditions in the furnace and measuring temperature, sampling and adding metallurgical slag charge by a furnace operator in front of the furnace. Due to the complex conditions in the LF furnace, the conditions in the furnace need to be frequently observed, temperature measurement sampling and slag charge adding are needed, the opening frequency of the furnace door is very high, and almost every furnace steel needs to be opened and closed for more than 20 times.
The water inlet and return pipe of the original water-cooling furnace door is connected with inlet water and return water by two metal hoses, one end of each hose is connected with a joint of a water pipe fixed on the furnace cover, and the other end of each hose is directly connected with a shell of the water-cooling furnace door. Because the furnace door is the rotatory switching, cause the metal collapsible tube frequent buckling at the in-process of frequent switching, the hose trouble that often appears leaks, easily causes white point quality problem, and is unfavorable for the safety in production. The problem of frequent water leakage cannot be solved by continuously improving the quality of the hose, and only the consumption of the hose reaches more than 60 according to statistics of the consumption of the original water-cooling furnace door all the year round.
Therefore, the structures of the water inlet pipe and the water return pipe of the furnace door must be redesigned to ensure the product quality and avoid the quality problem of white spots.
Disclosure of Invention
The utility model aims to solve the problem that the water inlet return hose of the LF furnace water-cooling furnace door frequently leaks water and provide a LF refining furnace door with water inlet return pipe rotating device, avoid causing hydrogen white point quality problem in the molten steel with frequently leaking.
The technical scheme of the utility model is realized like this:
the utility model provides a LF refining furnace gate with advance wet return rotary device, includes the furnace gate body that has inside water cavity, return water communicating pipe and the communicating pipe of intaking that communicates with the inside water cavity of furnace gate body mutually, return water communicating pipe and intake communicating pipe are connected with the water route in the rotatory pivot both ends of water service respectively, install return water rotary joint and the rotary joint of intaking rather than the intercommunication on the rotatory pivot end of water service that has the water route at both ends respectively, return water rotary joint and the rotary joint of intaking are again respectively with the fixed water pipe of return water and intake fixed water pipe mutually communicate.
The side surface of the furnace door body is provided with a furnace door body water return port and a furnace door body water inlet, and the water return communicating pipe and the water inlet communicating pipe are communicated with a water cavity in the furnace door body through the furnace door body water return port and the furnace door body water inlet respectively.
The upper and lower positions between the oven door body and the water-through rotating pivot are also connected with an oven door upper connecting rod and an oven door lower connecting rod.
The water-through rotating pivot with water paths at two ends is respectively provided with a water-through rotating pivot shaft surface water return hole and a water-through rotating pivot shaft surface water inlet hole, and the water-through rotating pivot shaft surface water return hole and the water-through rotating pivot shaft surface water inlet hole are respectively communicated with a water return communicating pipe and a water inlet communicating pipe.
An upper rotary base and a lower rotary base which support the rotation of the furnace door are arranged at the upper position and the lower position of the door frame of the LF furnace water cooling furnace, and a water-through rotary pivot is arranged in the upper rotary base and the lower rotary base through step shafts processed at the two ends of the water-through rotary pivot.
The water paths arranged at the two ends of the water-through rotating pivot are respectively a rotating pivot water return channel and a rotating pivot water inlet channel, the water-through rotating pivot shaft surface water return hole is drilled through with the rotating pivot water return channel, and the water-through rotating pivot shaft surface water inlet hole is drilled through with the rotating pivot water inlet channel.
The backwater rotary joint and the water inlet rotary joint communicated with two ends of the water through rotary pivot are purchased HD type rotary joints.
The other ends of the backwater fixed water pipe and the water inlet fixed water pipe, one ends of which are respectively communicated with the backwater rotary joint and the water inlet rotary joint, are respectively communicated with the backwater pipeline and the water supply pipeline, when the furnace door is opened and closed in a rotating mode, a part of the backwater rotary joint and a part of the water inlet rotary joint rotate along the water flowing rotary pivot, and the backwater fixed water pipe and the water inlet fixed water pipe are kept static.
The furnace door body is formed by welding steel plates in a splicing mode, and the inner water cavity is separated into water outlets by steel strips.
The technical scheme of the utility model the positive effect that produces as follows:
the LF refining furnace is a key device for refining molten steel. A key component of an LF furnace is a furnace door on a water-cooled furnace cover, which is used for observing the conditions in the furnace and measuring temperature, sampling and adding metallurgical slag by operating personnel in front of the furnace. The water inlet and return pipe of the original water-cooling furnace door is connected with inlet water and return water by two metal hoses, one end of each hose is connected with a joint of a water pipe fixed on the furnace cover, and the other end of each hose is directly connected with a shell of the water-cooling furnace door. Because the furnace door is the rotatory switching, cause the metal collapsible tube frequent buckling at the in-process of frequent switching, the hose trouble that often appears leaks, easily causes white point quality problem, and is unfavorable for the safety in production.
The utility model discloses a furnace gate improves return water pipe and rotary device, through structural design, will supply, return water passageway direct design inside the swivel pivot, then utilize the characteristic of purchasing swivel elbow outward, in rotatory switching furnace gate, swivel elbow follows the pivot rotation, and fixed pipeline keeps static, has avoided the frequent problem of leaking that buckles and cause of metal collapsible tube. The utility model discloses simple structure is compact, and is as an organic whole with the welding of furnace gate body, and the reliability is higher.
Drawings
Fig. 1 is a front view of the structure of the present invention.
Fig. 2 is a cross-sectional view taken along line a-a of fig. 1.
The labels in the figures are: 1. a furnace door body; 2. A connecting rod on the furnace door; 3. a furnace door lower connecting rod; 4. a backwater communicating pipe; 5. a water inlet communicating pipe; 6. a water-passing rotating pivot; 7. a backwater rotary joint; 8. a water inlet rotary joint; 9. a backwater fixed water pipe; 10. water is fed into the fixed water pipe; 11. rotating the base upwards; 12. a lower rotating base; 13. the rotating pivot returns to the water channel; 14. a water inlet channel of the rotating pivot; 15. a water return hole is arranged on the surface of the water-passing rotating pivot shaft; 16. a water inlet hole is arranged on the shaft surface of the water-passing rotating pivot; 17. a furnace door body water return hole; 18. a water inlet hole of the furnace door body.
Detailed Description
As shown in fig. 1 and 2, the furnace door of the LF refining furnace with the water inlet and return pipe rotating device comprises a furnace door body 1 with an internal water cavity, a water return communicating pipe 4 and a water inlet communicating pipe 5 communicated with the internal water cavity of the furnace door body 1, wherein the water return communicating pipe 4 and the water inlet communicating pipe 5 are respectively communicated with water paths in two ends of a water passing rotating pivot 6, the ends of the water passing rotating pivot 6 with water paths at two ends are respectively provided with a water return rotating joint 7 and a water inlet rotating joint 8 communicated with the water returning rotating joint, and the water return rotating joint 7 and the water inlet rotating joint 8 are respectively communicated with a water return fixed water pipe 9 and a water inlet fixed water pipe 10. When the water-passing rotating pivot 6 rotates, the water inlet and the water return are kept to pass through.
The side surface of the furnace door body 1 is provided with a furnace door body water return port 17 and a furnace door body water inlet 18, and the water return communicating pipe 4 and the water inlet communicating pipe 5 are communicated with a water cavity in the furnace door body 1 through the furnace door body water return port 17 and the furnace door body water inlet 18 respectively.
A furnace door upper connecting rod 2 and a furnace door lower connecting rod 3 are also connected between the furnace door body 1 and the water-through rotating pivot 6 at the upper and lower positions.
The water-passing rotating pivot 6 with water paths at two ends is respectively provided with a water-passing rotating pivot surface water return hole 15 and a water-passing rotating pivot surface water inlet hole 16, and the water-passing rotating pivot surface water return hole 15 and the water-passing rotating pivot surface water inlet hole 16 are respectively communicated with the water return communicating pipe 4 and the water inlet communicating pipe 5.
An upper rotary base 11 and a lower rotary base 12 for supporting the rotation of the furnace door are arranged at the upper and lower positions of the door frame of the LF furnace water cooling furnace, and a water-through rotary pivot 6 is arranged in the upper rotary base 11 and the lower rotary base 12 through stepped shafts processed at the two ends of the water-through rotary pivot. The upper rotary base 11 and the lower rotary base 12 are used for supporting the oven door to rotate.
The water paths arranged at the two ends of the water-passing rotating pivot 6 are a rotating pivot water return channel 13 and a rotating pivot water inlet channel 14 respectively, a water-passing rotating pivot shaft surface water return hole 15 is drilled through the rotating pivot water return channel 13, and a water-passing rotating pivot shaft surface water inlet hole 16 is drilled through the rotating pivot water inlet channel 14.
The backwater rotary joint 7 and the water inlet rotary joint 8 communicated with the two ends of the water-through rotary pivot 6 are purchased HD type rotary joints.
The other ends of a backwater fixed water pipe 9 and a water inlet fixed water pipe 10, one ends of which are respectively communicated with the backwater rotary joint 7 and the water inlet rotary joint 8, are respectively communicated with a backwater pipeline and a water supply pipeline, when the furnace door is opened and closed in a rotating mode, a part of the backwater rotary joint 7 and a part of the water inlet rotary joint 8 rotate along with the water flowing rotary pivot 6, and the backwater fixed water pipe 9 and the water inlet fixed water pipe 10 are kept static.
The furnace door body 1 is formed by welding steel plates in a splicing mode, and a water outlet channel is separated from the interior of the furnace door body by a steel plate strip. Step shafts are processed at two ends of the rotating pivot 6 and used for mounting a rotating base and a connecting rod connected with a furnace door.
The furnace door body is formed by welding 8mm thick steel plates in a splicing manner, and a 6mm steel plate strip is used for separating a water outlet channel inside the furnace door body; a water inlet and return hole DN25 is arranged on the side surface of one side of the rotating shaft of the oven door.
One end of the furnace door connecting rod is welded after being assembled with the rotating pivot, the other end of the furnace door connecting rod is welded with the furnace door body, and the parallelism between the axis of the connecting rod and the side surface of the furnace door is noticed in the welding process; one end of the communicating pipe is welded with the water port of the furnace door, the other end of the communicating pipe is welded with the opening on the axial surface of the rotating pivot, and the welding line is a continuous fillet welding line and cannot leak. After the rotating pivot step shaft and the rotating base are assembled, the rotating base is connected and installed with the installation hole in the furnace door frame through a bolt. The purchased HD-type rotary joint is arranged at the threaded connection ends at the two ends of the rotary pivot, and a sealing adhesive tape is required to be wound to avoid leakage. One end of the fixed pipe is installed on the rotary joint, and the other end of the fixed pipe is connected with the water supply and return pipeline of the equipment. And meanwhile, the fixed pipe is required to be subjected to pipe clamp fixing. And after the installation is finished, performing switch test and water flowing for leakage test.
Claims (9)
1. The utility model provides a LF refining furnace gate with advance wet return rotary device, includes furnace gate body (1) that has inside water cavity, return water communicating pipe (4) and intake communicating pipe (5) that put through mutually with inside water cavity of furnace gate body (1), its characterized in that: the backwater communicating pipe (4) and the water inlet communicating pipe (5) are respectively communicated with water paths in two ends of the water-passing rotating pivot (6), the end heads of the water-passing rotating pivot (6) with the water paths at two ends are respectively provided with a backwater rotating joint (7) and a water inlet rotating joint (8) which are communicated with the backwater communicating pipe and the water inlet rotating joint, and the backwater rotating joint (7) and the water inlet rotating joint (8) are respectively communicated with a backwater fixed water pipe (9) and a water inlet fixed water pipe (10).
2. The furnace door of the LF refining furnace with the water inlet and return pipe rotating device as claimed in claim 1, wherein: the side surface of the furnace door body (1) is provided with a furnace door body water return port (17) and a furnace door body water inlet (18), and the water return communicating pipe (4) and the water inlet communicating pipe (5) are communicated with a water cavity in the furnace door body (1) through the furnace door body water return port (17) and the furnace door body water inlet (18) respectively.
3. The furnace door of the LF refining furnace with the water inlet and return pipe rotating device as claimed in claim 1, wherein: the upper and lower positions between the oven door body (1) and the water-through rotating pivot (6) are also connected with an oven door upper connecting rod (2) and an oven door lower connecting rod (3).
4. The furnace door of the LF refining furnace with the water inlet and return pipe rotating device as claimed in claim 1, wherein: a water-passing rotary pivot shaft (6) with water paths at two ends is respectively provided with a water-passing rotary pivot shaft surface water return hole (15) and a water-passing rotary pivot shaft surface water inlet hole (16), and the water-passing rotary pivot shaft surface water return hole (15) and the water-passing rotary pivot shaft surface water inlet hole (16) are respectively communicated with a water return communicating pipe (4) and a water inlet communicating pipe (5).
5. The furnace door of the LF refining furnace with the water inlet and return pipe rotating device as claimed in claim 1, wherein: an upper rotating base (11) and a lower rotating base (12) for supporting the rotation of the furnace door are arranged at the upper position and the lower position of the door frame of the LF furnace water cooling furnace, and a water-through rotating pivot (6) is arranged in the upper rotating base (11) and the lower rotating base (12) through step shafts processed at the two ends of the water-through rotating pivot.
6. The furnace door of the LF refining furnace with the water inlet and return pipe rotating device as claimed in claim 1, wherein: water paths arranged at two ends of the water-passing rotating pivot (6) are a rotating pivot water return channel (13) and a rotating pivot water inlet channel (14), a water-passing rotating pivot shaft surface water return hole (15) is drilled through the rotating pivot water return channel (13), and a water-passing rotating pivot shaft surface water inlet hole (16) is drilled through the rotating pivot water inlet channel (14).
7. The furnace door of the LF refining furnace with the water inlet and return pipe rotating device as claimed in claim 1, wherein: the backwater rotary joint (7) and the water inlet rotary joint (8) communicated with the two ends of the water-through rotary pivot (6) are purchased HD-type rotary joints.
8. The furnace door of the LF refining furnace with the water inlet and return pipe rotating device as claimed in claim 1, wherein: the other ends of a backwater fixed water pipe (9) and a water inlet fixed water pipe (10), one ends of which are respectively communicated with the backwater rotary joint (7) and the water inlet rotary joint (8), are respectively communicated with a backwater pipeline and a water supply pipeline, when the furnace door is opened and closed in a rotating mode, one part of the backwater rotary joint (7) and one part of the water inlet rotary joint (8) rotate along with the water passing rotary pivot (6), and the backwater fixed water pipe (9) and the water inlet fixed water pipe (10) are kept static.
9. The furnace door of the LF refining furnace with the water inlet and return pipe rotating device as claimed in claim 1, wherein: the furnace door body (1) is formed by welding steel plates in a splicing manner, and a water outlet channel is separated by a steel plate strip inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022687363.0U CN213951254U (en) | 2020-11-19 | 2020-11-19 | LF refining furnace door with water inlet and return pipe rotating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022687363.0U CN213951254U (en) | 2020-11-19 | 2020-11-19 | LF refining furnace door with water inlet and return pipe rotating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213951254U true CN213951254U (en) | 2021-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022687363.0U Active CN213951254U (en) | 2020-11-19 | 2020-11-19 | LF refining furnace door with water inlet and return pipe rotating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213951254U (en) |
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2020
- 2020-11-19 CN CN202022687363.0U patent/CN213951254U/en active Active
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