An adaptive quick-change device for the lance tail of a converter

Abstract

A converter adaptive oxygen lance quick-change device at the lance tail, comprising a first adjustment plate, a second adjustment plate, a trolley, a sealing seat, an adjustment hemisphere, and a hemisphere support seat. The trolley is provided with a trolley platform. The first adjustment plate is detachably connected to the trolley platform, and the second adjustment plate is detachably connected to the trolley platform. The trolley platform is provided with a U-shaped groove, and the hemisphere support seat is fixed at the upper end of the U-shaped groove. The adjustment hemisphere is fixed on the oxygen lance, and the adjustment hemisphere matches the hemisphere support seat. The second adjustment plate is fixedly connected to the oxygen lance, and the three sealing seats are fixed on the first adjustment plate. The present invention changes the traditional way of quickly replacing the oxygen lance and well solves the problems of "complicated oxygen lance replacement, long time consumption, and low operation efficiency" in steelmaking operations.

Description

Technical Field

[0001] The present invention belongs to a converter smelting device, and particularly relates to a converter adaptive oxygen lance tail quick-change device. Background Art

[0002] The oxygen lance is one of the important equipment for converter steelmaking. The working environment of the oxygen lance is harsh, its service life is short, and it needs to be replaced relatively frequently. Therefore, the length of time for replacing the oxygen lance will directly affect the normal production of the converter and the output.

[0003] Ordinary oxygen lance replacement devices need to be connected by flanges and bolts. During the installation and disassembly process, 30 - 40 bolts need to be replaced. This method not only has low work efficiency and high labor intensity, but also has a high temperature and poor environment at the operation site, which is harmful to human health. In addition, when installing the oxygen lance, due to the large self-weight of the oxygen lance, it is very difficult to align the oxygen lance with the center of the furnace mouth, and it takes more than two hours to adjust the lance. The traditional oxygen lance quick-change device is prone to gnawing the sealing devices of oxygen and inlet (return) water when adjusting the oxygen lance angle, resulting in air leakage and water leakage, affecting the normal progress of production. Summary of the Invention

[0004] The purpose of the present invention is to provide a converter adaptive oxygen lance tail quick-change device. The present invention changes the traditional way of quickly replacing the oxygen lance and well solves the problems of "complicated oxygen lance replacement, long time consumption, and low operation efficiency" in steelmaking operations.

[0005] To achieve the above purpose, the present invention is implemented by adopting the following technical solutions:

[0006] A converter adaptive oxygen lance tail quick-change device includes an adjustment plate one, an adjustment plate two, a trolley, a socket, an adjustment hemisphere, and a hemisphere support seat. The trolley is provided with a trolley platform. The adjustment plate one is detachably connected to the trolley platform, and the adjustment plate two is detachably connected to the trolley platform. The trolley platform is provided with a U-shaped groove, and the hemisphere support seat is fixed at the upper end of the U-shaped groove. The adjustment hemisphere is fixed on the oxygen lance, and the adjustment hemisphere matches the hemisphere support seat. The adjustment plate two is fixedly connected to the oxygen lance, and the three sockets are fixed on the adjustment plate one.

[0007] The three sockets on the adjustment plate one are arranged in an equilateral triangle. A flange is installed corresponding to each socket at the bottom of the adjustment plate one, and the flanges are respectively connected to an inlet water metal hose, a return water metal hose, and an oxygen metal hose.

[0008] The size of the U-shaped groove matches the diameter of the oxygen lance.

[0009] A positioning pin is fixed on the trolley platform, and a positioning pin hole is provided at the corresponding position of the adjustment plate two.

[0010] When assembling the oxygen gun onto the trolley, first fix the adjustment plate 2 to the trolley platform, and then fix the adjustment plate 1 to the trolley platform.

[0011] Compared with the existing technology, the beneficial effects of the present invention are:

[0012] 1) With the present invention, oxygen lances can be plugged in and out freely, which improves the efficiency of lance replacement. The time required to replace an oxygen lance is shortened from 2 to 3 hours to less than 30 minutes. The interchangeability of oxygen lances is also guaranteed, thus achieving efficient, continuous and fast-paced steelmaking.

[0013] 2) The oxygen lance and the trolley are connected through a hemispherical support seat and an adjustment hemisphere, which makes it easy to adjust the oxygen lance;

[0014] 3) The present invention adopts two split adjustment plates to ensure that the O-ring in the sealing seat is not worn when the gun position is adjusted, thereby ensuring sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of a converter adaptive oxygen lance tail quick-change device according to the present invention.

[0016] Figure 2 It is a top view of a converter adaptive oxygen lance tail quick-change device according to the present invention.

[0017] Figure 3 The present invention is a schematic diagram of the oxygen lance plug-in of a converter adaptive oxygen lance tail quick-change device.

[0018] In the figure: 1. Adjustment plate 1, 2. Oxygen pin holder, 3. Water inlet pin holder, 4. Water return pin holder, 5. Adjustment plate 2, 6. Trolley, 7. Connector, 8. O-ring, 9. Oxygen gun, 10. Adjustment hemisphere, 11. Positioning pin, 12. Trolley platform, 13. Metal hose, 14. Bolt, 15. Flange 1, 16. Hemisphere support seat, 17. Connector, 18. Flange 2. DETAILED DESCRIPTION

[0019] The following further describes the embodiments of the present invention in conjunction with specific examples:

[0020] See Figures 1 - 3 A quick-changing device for the tail of an adaptive oxygen lance of a converter comprises an adjustment plate 1, an adjustment plate 2 5, a trolley 6, a plug connector 7, an adjustment hemisphere 10, and a hemisphere support seat 16. The trolley 6 is provided with a trolley platform 12, the adjustment plate 1 is detachably connected to the trolley platform 12, the adjustment plate 2 5 is detachably connected to the trolley platform 12, the trolley platform 12 is provided with a U-shaped groove, and a hemisphere support seat 16 is fixed at the upper end of the U-shaped groove. The adjustment hemisphere 10 is fixed on the oxygen lance 9, the adjustment hemisphere 10 matches the hemisphere support seat 16, the adjustment plate 2 5 is fixedly connected to the oxygen lance 9, and the three plug connectors 7 are fixed on the adjustment plate 1.

[0021] The three socket joints 7 on the first adjusting plate 1 are arranged in an equilateral triangle, and a flange is installed at the bottom of the first adjusting plate 1 corresponding to each socket joint 7, and the flanges are respectively connected to the water inlet metal hose, the water return metal hose, and the oxygen metal hose.

[0022] The size of the U-shaped groove matches the diameter of the oxygen lance 9.

[0023] A positioning pin 11 is fixed on the trolley platform 12, and a positioning pin hole is provided at the corresponding position of the second adjusting plate 5.

[0024] When assembling the oxygen lance 9 onto the trolley 6, first fix the second adjusting plate 5 to the trolley platform 12, and then fix the first adjusting plate 1 to the trolley platform 12 to ensure that the O-ring 8 inside the socket joint 7 is not worn when adjusting the lance position.

[0025] Example 1:

[0026] Design the size of the first adjusting plate 1 as a steel plate with a length of 800 mm and a width of 300 mm. Drill two round holes with a diameter of φ273 mm and one round hole with a diameter of φ402 mm on the first adjusting plate 1. The three round holes are distributed in an equilateral triangle. Weld the corresponding flange 15 in sequence on the three round holes. The socket joint 7 is welded and fixed to the flange 15. The height of the socket joint 7 is 500 mm to form the water inlet pin seat 3, the water return pin seat 4, and the oxygen pin seat 2. The O-ring 8 is installed inside the socket joint 7 to seal the connection between the water inlet and return pipes, the oxygen pipe and the socket joint 7. Weld and install the corresponding connecting pipes 17 in sequence below the three round holes. The connecting pipes 17 are welded and fixed to the flange 2 18. The flange 2 18 is connected to the oxygen, water inlet and return metal hoses 13 through bolts. Design the size of the second adjusting plate 5 as a steel plate with a length of 600 mm and a width of 200 mm. Cut out a U-shaped groove with a corresponding size on the second adjusting plate 5 according to the diameter of the oxygen lance 9. The second adjusting plate 5 is welded to the oxygen lance 9, the adjusting hemisphere 10 is welded to the oxygen lance 9, and the hemisphere support seat 16 is welded to the trolley platform 12. Design the size of the positioning pin 11 as a cylinder with a diameter of φ100 mm and a length of 500 mm. The positioning pin 11 is welded to the trolley platform 12. The first adjusting plate 1 and the second adjusting plate 5 are connected and fixed to the trolley platform 12 through bolts.

[0027] When installing the oxygen lance 9, align the positioning pin holes on the second adjusting plate 5 with the positioning pins 11 on the trolley platform 12 to quickly position the oxygen lance 9. The water inlet pipe, oxygen pipe and return water pipe on the oxygen lance 9 are respectively inserted into the water inlet pin seat 3, oxygen pin seat 2 and return water pin seat 4 on the first adjusting plate 1. The O-ring 8 on the connector 7 ensures the sealing performance of the insertion. According to the requirements of the lance position, adjust the angle of the oxygen lance 9 by adjusting the fitting angle between the hemispherical body 10 and the hemispherical support seat 16. Since the centerlines of the hemispherical body 10 and the hemispherical support seat 16 are always consistent with the centerline of the oxygen lance 9, it makes the on-site lance adjustment work easier. After determining the angle, tighten the bolt 14 between the second adjusting plate 5 and the trolley platform 12. After fixing the oxygen lance 9, tighten the bolt 14 between the first adjusting plate 1 and the trolley platform 12. When disassembling the oxygen lance, only 8 bolts need to be disassembled, which is simple and convenient.

[0028] When assembling the oxygen lance, fix the second adjusting plate 5 first and then the first adjusting plate 1, which can ensure that the O-ring 8 in the seal seat 7 is not worn when adjusting the lance position and ensure the sealing performance.

[0029] The above is only the preferred specific implementation mode of the present invention for patent, but the protection scope of the present invention for patent is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention for patent, according to the technical solution and its concept of the present invention for patent, makes equivalent substitution or change, and should be covered by the protection scope of the present invention for patent.

Claims

1. An adaptive oxygen lance tail quick-change device for a converter, characterized in that, It includes adjusting plate 1, adjusting plate 2, trolley, socket joint, adjusting hemisphere, and hemisphere support seat. The trolley is provided with a trolley platform. The adjusting plate 1 is detachably connected to the trolley platform, and the adjusting plate 2 is detachably connected to the trolley platform. The trolley platform is provided with a U-shaped groove, and the hemisphere support seat is fixed at the upper end of the U-shaped groove. The adjusting hemisphere is fixed on the oxygen lance, and the adjusting hemisphere matches the hemisphere support seat. The adjusting plate 2 is fixedly connected to the oxygen lance, and three socket joints are fixed on the adjusting plate 1; When assembling the oxygen lance to the trolley, first fix the adjusting plate 2 to the trolley platform, and then fix the adjusting plate 1 to the trolley platform; The three socket joints on the adjusting plate 1 are arranged in an equilateral triangle. A flange is installed corresponding to each socket joint at the bottom of the adjusting plate 1, and the flanges are respectively connected to the inlet water metal hose, the return water metal hose, and the oxygen metal hose; The size of the U-shaped groove matches the diameter of the oxygen lance; A positioning pin is fixed on the trolley platform, and a positioning pin hole is provided at the corresponding position of the adjusting plate 2.

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