CN221837039U - A quick-replaceable steel tapping port assembly for an extra-large converter - Google Patents

Abstract

The utility model discloses a steel tapping hole assembly capable of being replaced quickly for an oversized converter, and belongs to the technical field of steelmaking. The utility model comprises an end brick and an inner nozzle brick, wherein the end brick comprises a replacement brick and an end fixing brick, and the replacement brick is arranged between the inner nozzle brick and the end fixing brick. The original end brick structure is improved into a structure of a replacement brick and an end fixed brick, and the problems that the contact surface of the original end brick is oxidized and loosened obviously and molten steel is easy to leak caused by replacing the inner nozzle brick for a plurality of times are solved by replacing the replacement brick. The inner holes of the replacement brick and the end fixing brick are designed to be straight holes, so that molten steel flushing is concentrated on the upper side of the end fixing brick, meanwhile, the thickness of the matched joint surface is reduced from outside to inside, corrosion to the contact surface of the replacement brick and the end fixing brick is reduced, and the service life of the steel tapping hole assembly is effectively guaranteed.

Description

A quick-replaceable steel tapping port assembly for an extra-large converter

Technical Field

The utility model relates to the technical field of steelmaking, in particular to a fast-replaceable steel outlet assembly for an extra-large converter.

Background Art

During the converter steelmaking process, the molten steel in the converter enters the ladle from the taphole assembly. In order to achieve slag blocking, the converter slide slag blocking technology is usually adopted. Specifically, a slag blocking slide is set at the outlet of the taphole assembly. The taphole assembly includes a taphole head brick, a taphole pipe brick, an inner water nozzle brick and a fixed steel pipe rack, and the slag blocking slide is connected to the inner water nozzle brick.

A steel-tap assembly and a converter are found by searching CN107400752A, and the steel-tap assembly includes: inner water inlet bricks, steel-tap head bricks and steel-tap pipe bricks connected in sequence, wherein the inner water inlet bricks and steel-tap head bricks are aluminum-carbon parts. The steel-tap assembly disclosed in the utility model is designed to be aluminum-carbon parts by designing the inner water inlet bricks and steel-tap head bricks. Since the aluminum-carbon material has better thermal shock resistance and erosion resistance than the magnesium-carbon material, and has higher strength, hardness and wear resistance, the ability of the end faces of the inner water inlet bricks and steel-tap head bricks to adhere to the fire mud is effectively reduced, and the cleaning of the fire mud is convenient, so that the end faces of the inner water inlet bricks and steel-tap head bricks are not easily damaged, and the service life of the inner water inlet bricks and steel-tap head bricks is effectively extended, thereby improving the service life of the steel-tap assembly; at the same time, the slag blocking safety is also improved.

The connection part between the tapping end brick and the inner nozzle brick is a plane or a mother-and-child joint bonded by fire mud. The contact part is a surface contact, and the probability of air infiltrating the contact surface during use is high. Among them, except for the replacement of the tapping assembly, the end bricks are not replaced, and the inner nozzle bricks are replaced. The contact surface is oxidized, loosened, and peeled due to the repeated replacement of the inner nozzle bricks. Since the end bricks need to be used in conjunction with multiple sets of inner nozzle bricks, the impact of oxidation and loosening of the contact surface is more obvious. The service life of the tapping end bricks has become the key to directly determine whether the tapping can have a long life.

Utility Model Content

The technical problem to be solved by the utility model is: how to solve the problem that the end brick needs to be used in conjunction with multiple sets of inner nozzle bricks in succession, and the contact surface is obviously oxidized and loose, so a method for improving the end brick structure is proposed, and an end brick capable of replacing the contact part with multiple sets of inner nozzle bricks is designed.

In order to solve the above technical problems, the utility model has obtained the technical solution of the utility model through practice and summary. The utility model adopts the following technical solution:

A fast-replaceable steel outlet assembly for an extra-large converter comprises an end brick and an inner water outlet brick. The end brick comprises a replacement brick and an end fixing brick. The replacement brick is installed between the inner water outlet brick and the end fixing brick.

Preferably, the outer ring of the replacement brick is provided with a connecting ring, and at least one group of connecting rings is provided.

Preferably, a connecting surface is provided between the replacement brick and the end fixing brick, and the connecting surface is a plug-in structure or a mortise and tenon structure.

Preferably, the replacement brick is provided with a socket plug, and the end fixing brick is provided with a socket slot, and the socket plug and the socket slot are adapted to each other to form a plug-in structure.

Preferably, the thickness of the connecting surface decreases from the outside to the inside.

Preferably, the inner holes of the replacement brick and the end fixing brick are straight holes.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model improves the original end brick structure into a structure of replacement bricks and end fixed bricks. By replacing the replacement bricks, the problem of frequent replacement of the inner water inlet bricks causing the contact surface with the original end bricks to be oxidized and loose, which is prone to leakage of molten steel, is solved. The inner holes of the replacement bricks and the end fixed bricks are designed as straight holes, so that the erosion of molten steel is concentrated on the upper side of the end fixed bricks. At the same time, the thickness of the joint surface decreases from the outside to the inside, which reduces the erosion of the contact surface of the replacement bricks and the end fixed bricks, thereby effectively ensuring the service life of the outlet assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of an embodiment of the utility model;

FIG2 is a schematic diagram of the overall structure of an embodiment of the present utility model;

Fig. 3 is a schematic diagram of the overall structure of the replacement brick of the utility model;

FIG4 is a schematic diagram of the overall structure of an embodiment of the present utility model;

In the figure: end brick 1, replacement brick 101, end fixing brick 102, connecting ring 103, socket 104, socket slot 105, inner water outlet brick 2, round hole steel outlet brick 3, steel pipe 4, steel pipe cross 5, retaining ring pipe for grouting material 6, cover plate 7 and inner water outlet pressure plate 8, tail brick 9.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

Example 1

As shown in Figures 1 and 3, a quickly replaceable extra-large converter tapping port assembly includes an end brick 1 and an inner water outlet brick 2, and also includes a round hole tapping port brick 3, a steel pipe 4, a steel pipe cross 5, a retaining ring pipe 6 for grouting material, a cover plate 7 and an inner water outlet pressure plate 8, and a tail brick 9. The round hole tapping port brick 3, the steel pipe 4, the steel pipe cross 5, the retaining ring pipe 6 for grouting material, the cover plate 7 and the inner water outlet pressure plate 8, and the tail brick 9 are all existing technical contents and are not described in detail.

The inventor of the utility model has only improved the structure of the original end bricks. The end bricks 1 include replacement bricks 101 and end fixing bricks 102. The replacement bricks 101 are installed between the inner water inlet bricks 2 and the end fixing bricks 102. The end fixing bricks 102 can be replaced by the replacement bricks 101, so that after the inner water inlet bricks 2 are replaced many times, if the contact surface is corroded, the contact surface erosion problem can be solved by replacing the replacement bricks 101.

Based on the above embodiment, the following improvements are made. As shown in Figures 1 and 3, the outer ring of the replacement brick 101 is provided with a connecting ring 103, and at least one group of connecting rings 103 is provided. The stability of the replacement brick 101 after replacement is achieved by applying fire mud on the connecting rings 103.

Based on the above embodiment, the following improvements are made. As shown in FIG2 , a connection surface is provided between the replacement brick 101 and the end fixing brick 102 . The connection surface is a plug-in structure or a mortise and tenon structure, and can also be a male and female end.

Based on the above embodiment, the following improvements are made. As shown in FIG2 , the replacement brick 101 is provided with a socket plug 104, and the end fixing brick 102 is provided with a socket slot 105. The socket plug 104 and the socket slot 105 are adapted to each other to form a plug-in structure.

Based on the above embodiment, the following improvements are made, as shown in Figures 2 and 4, the thickness of the connection surface decreases from the outside to the inside. The connection surface is designed to be along the steel output direction, thereby reducing the contact surface erosion between the replacement brick 101 and the end fixed brick 102.

Based on the above embodiment, the following improvements are made. As shown in Figures 1 to 4, the inner holes of the replacement brick 101 and the end fixing brick 102 are straight holes. This allows the molten steel to be flushed and concentrated on the upper side of the end fixing brick. At the same time, the thickness of the matching joint surface decreases from the outside to the inside, which reduces the erosion of the contact surface between the replacement brick and the end fixing brick, thereby effectively ensuring the service life of the steel outlet assembly.

The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. Equivalent replacement or change based on the technical solution of the utility model and its utility model concept should be included in the protection scope of the utility model.

Claims (3)

1. A fast-replaceable steel outlet assembly for an extra-large converter, comprising an end brick and an inner nozzle brick, wherein the end brick comprises a replacement brick and an end fixed brick, and the replacement brick is installed between the inner nozzle brick and the end fixed brick; A connection surface is provided between the replacement brick and the end fixing brick, and the connection surface is a plug-in structure or a mortise and tenon structure; The thickness of the connecting surface decreases from the outside to the inside; The inner holes of the replacement brick and the end fixing brick are straight holes. 2. A quickly replaceable steel outlet assembly for an extra-large converter according to claim 1, characterized in that the outer ring of the replacement brick is provided with a connecting ring, and at least one group of connecting rings is provided. 3. A quickly replaceable steel outlet assembly for an extra-large converter according to claim 2, characterized in that a socket plug is provided on the replacement brick, a socket slot is provided on the end fixing brick, and the socket plug and the socket slot are adapted to each other to form a plug-in structure.