Plug-in type converter oxygen lance capable of being quickly replaced

Abstract

The utility model relates to the technical field of converter oxygen lances, in particular to a plug-in type quick-change converter oxygen lance which comprises a quick-change fixing seat, an oxygen branch pipe, a water inlet branch pipe and a water return branch pipe, and the ends of the oxygen branch pipe, the water inlet branch pipe and the water return branch pipe are all fixedly arranged in the quick-change fixing seat. The two parts jointly penetrate through the quick-change fixing seat and are welded and fixed with the combined oxygen lance nozzle; the other ends of the water inlet branch pipe and the water return branch pipe are communicated with the cooling pipe; the ends, located in the quick-change fixing base, of the oxygen branch pipe, the water inlet branch pipe and the water return branch pipe are fixedly connected with outer sleeves used for being connected with an oxygen supply pipe, a water supply pipe and a water return pipe in an inserted mode. The converter oxygen lance and the oxygen lance trolley are accurately installed, additional alignment is not needed, the sealing performance is good, the installation or replacement speed is high, and the operation rate of a converter can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of converter oxygen lances, in particular to an insertable, quickly-replaceable converter oxygen lance. Background Art

[0002] The converter oxygen lance is a crucial oxygen blowing device for converter steelmaking. The nozzle is a vulnerable component, and the lance itself is also susceptible to damage. Replacing the nozzle or repairing the lance requires removing the old, unusable lance from the converter and replacing it with a new, repaired lance with a new nozzle.

[0003] Flanges are typically used to connect the oxygen, water, and return pipes on conventional converter oxygen lances to the oxygen, water, and return metal hoses on the converter. Each pair of flanges requires eight to twelve bolts to secure them together, making removal of these numerous bolts time-consuming and labor-intensive. Furthermore, the oxygen lance must be removed from the lance carriage on the lance slide. Consequently, oxygen lance replacement takes a significant amount of time, significantly impacting work efficiency. Utility Model Content

[0004] Based on the above problems, the purpose of the present invention is to provide a converter oxygen lance that is easy to replace.

[0005] The technical solution adopted by the utility model is: an insertable quick-change converter oxygen lance, comprising: a quick-change fixing seat and an oxygen branch pipe, a water inlet branch pipe, and a water return branch pipe, the ends of which are fixedly arranged in the quick-change fixing seat, and a cooling pipe is provided on the outside of the other end of the oxygen branch pipe. The two pipes pass through the quick-change fixing seat and are welded and fixed to the combined oxygen lance nozzle.

[0006] The other ends of the water inlet branch pipe and the water return branch pipe are both connected to the cooling pipe;

[0007] The ends of the oxygen branch pipe, the water inlet branch pipe and the return water branch pipe located in the quick-change fixing seat are all fixedly connected to the outer sleeve for plugging with the oxygen supply pipe, the water supply pipe and the return water pipe.

[0008] Furthermore, sealing rings are provided at the joints between the outer sleeve and the oxygen supply pipe, the water supply pipe and the return water pipe.

[0009] The beneficial effects of the utility model are:

[0010] 1. The converter oxygen lance and oxygen lance trolley provided by the utility model can be installed or replaced quickly, thereby improving the operating rate of the converter.

[0011] 2. The converter oxygen lance provided by the utility model is well sealed with the metal hose.

[0012] 3. The converter oxygen lance and oxygen lance trolley provided by the utility model are accurately installed and do not need to be aligned separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a plug-in quick-change converter oxygen lance of the utility model;

[0014] Figure 2 for Figure 1 Right view;

[0015] Figure 3 This is a schematic diagram of the connection between the outer tube and the oxygen supply tube;

[0016] Including: 1. Combined oxygen lance nozzle; 2. Cooling pipe; 3. Quick-change fixing seat; 4. Water inlet branch pipe; 5. Oxygen branch pipe; 6. Return water branch pipe; 7. Outer sleeve; 8. Oxygen supply pipe; 9. Sealing ring. DETAILED DESCRIPTION

[0017] The technical solution adopted by the present invention will be described clearly and in detail below with reference to the accompanying drawings.

[0018] like Figure 1-2 As shown, the utility model provides a plug-in quick-change converter oxygen lance, comprising: a quick-change fixing seat 3 and an oxygen branch pipe 5, a water inlet branch pipe 4, and a water return branch pipe 6, all of which have their ends fixed in the quick-change fixing seat 3;

[0019] Among them, the other end of the oxygen branch pipe 5 is provided with a cooling pipe 2 on the outside, and the two pass through the quick-change fixing seat 3 and are welded and fixed to the combined oxygen lance nozzle 1;

[0020] The other ends of the water inlet branch pipe 4 and the water return branch pipe 6 are both connected to the cooling pipe 2;

[0021] The ends of the oxygen branch pipe 5, the water inlet branch pipe 4, and the water return branch pipe 6 located in the quick-change fixing seat 3 are all fixedly connected to the outer sleeve 7;

[0022] Multiple outer sleeves 7 are used to connect the oxygen supply pipe 8, water supply pipe and return pipe (not shown in the figure) respectively by plugging;

[0023] Specifically, such as Figure 3 Taking the oxygen branch pipe 5 shown separately as an example of the plug-in connection between the oxygen supply pipe 8 and the outer sleeve 7, the oxygen branch pipe 5, the water inlet branch pipe 4, and the return water branch pipe 6 located in the quick-change fixing seat 3 are respectively connected to the oxygen supply pipe 8, the water supply pipe and the return water pipe through the outer sleeve 7 by plug-in connection, thereby realizing the quick connection of the plug-in quick-change converter oxygen gun provided by the utility model, and since the plug-in quick-change converter oxygen gun and the oxygen gun trolley are connected by plug-in connection, the installation is simple and maintenance is convenient.

[0024] During specific use, the quick-change fixing seat 3 can be fixed on the oxygen gun trolley, and the oxygen branch pipe 5, the water inlet branch pipe 4, and the return water branch pipe 6 are respectively connected to the oxygen supply pipe 8, the water supply pipe and the return water pipe through the outer sleeve 7 by plugging. The oxygen supply pipe 8 continuously provides oxygen, and the oxygen is blown from the combined oxygen gun nozzle 1 to the molten steel through the oxygen branch pipe 5. During the process, the water supply pipe passes through the water inlet branch pipe 4 to pass cooling water for cooling the combined oxygen gun nozzle 1 into the cooling pipe 2, and the cooling water returns to the return water pipe through the return water branch pipe 6, thereby realizing the circulation of cooling water.

[0025] Furthermore, a sealing ring 9 may be provided at the joints between the outer sleeve 7 and the oxygen supply pipe 8, the water supply pipe and the return pipe to improve the sealing performance of the joints.

[0026] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plug-in quick-change converter oxygen lance, characterized in that: include: The quick-change fixing seat (3) and the oxygen branch pipe (5), the water inlet branch pipe (4), and the water return branch pipe (6) whose ends are fixedly arranged in the quick-change fixing seat (3) are provided. The other end of the oxygen branch pipe (5) is provided with a cooling pipe (2) on the outside. The two pipes pass through the quick-change fixing seat (3) and are welded and fixed to the combined oxygen gun nozzle (1). The other ends of the water inlet branch pipe (4) and the water return branch pipe (6) are both connected to the cooling pipe (2); The ends of the oxygen branch pipe (5), the water inlet branch pipe (4), and the return water branch pipe (6) located in the quick-change fixing seat (3) are fixedly connected to the outer sleeve (7) for plugging with the oxygen supply pipe (8), the water supply pipe, and the return water pipe.

2. The plug-in quick-change converter oxygen lance according to claim 1, characterized in that: Sealing rings (9) are provided at the joints between the outer sleeve (7) and the oxygen supply pipe (8), the water supply pipe and the return pipe.

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