RH dip pipe steel liner structure convenient to weld

Abstract

The utility model discloses an RH dip pipe steel liner structure convenient to weld, which comprises a straight cylinder, a plurality of steel plate blocks are uniformly distributed at the upper end of the straight cylinder, the steel plate blocks are welded with the straight cylinder, deformed steel bars are wound on the outer side surfaces of the plurality of steel plate blocks, the upper end surface of the straight cylinder is provided with positioning grooves, and the number of the positioning grooves corresponds to that of the steel plate blocks. According to the RH dip pipe steel liner structure convenient to weld, the steel plate blocks are convenient to weld, the quality of the steel liner is improved, and the service life of the steel liner is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of refining furnaces, in particular to a RH impregnated tube steel liner structure which is convenient for welding. Background Art

[0002] The RH furnace immersion tube is an important component of the RH refining furnace, which mainly includes refractory bricks and steel bladder. The refractory bricks and the steel bladder are filled with self-flowing materials, and the outer side of the steel bladder is poured with castables. Among them, the steel bladder mainly supports the refractory bricks.

[0003] Since the closing end of the steel bladder is an arc-shaped structure, it is difficult to roll it in one piece. Therefore, a new steel bladder structure of an RH furnace immersion tube disclosed in Patent No. CN209778920U solves the technical problem of high difficulty in rolling in one piece by welding the steel plates in a circle. However, the steel plates in the patent require workers to tilt and position them during welding, which is very time-consuming and easily leads to uneven end faces of the steel plates after welding, resulting in uneven support for refractory bricks during use. At the same time, the threaded steel bars will also tilt when welded at the head and tail, reducing the service life of the steel bladder. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects, provide an RH impregnated tube steel bladder structure that is easy to weld, facilitate the welding of steel plates, be beneficial to improving the quality of the steel bladder, and effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an RH immersion tube steel liner structure that is easy to weld, comprising a straight cylinder, a plurality of steel plates are evenly distributed on the upper end of the straight cylinder, the steel plates are welded to the straight cylinder, the outer sides of the plurality of steel plates are surrounded by threaded steel, the upper end surface of the straight cylinder is provided with positioning grooves corresponding to the number of steel plates, the lower end of the steel plate is integrally connected with an insert plate, and the size of the insert plate is adapted to the positioning groove.

[0006] As a preferred technical solution of the utility model, at least two support frames are provided on the outer side of the straight cylinder, one end of the support frame is welded to the straight cylinder, and the other end of the support frame is welded to the steel plate, and the welding position of the support frame and the steel plate is the same as the welding position of the bottom layer of threaded steel.

[0007] As a preferred technical solution of the utility model, the number of the support frames is four, and the four support frames are evenly distributed on the outer side of the straight tube.

[0008] As a preferred technical solution of the utility model, at least one layer of connecting plate is provided at the upper end of the supporting frame, and one end of the connecting plate is welded to the steel plate.

[0009] As a preferred technical solution of the utility model, the number of the positioning grooves is twelve, and the twelve positioning grooves are evenly distributed on the upper end surface of the straight tube.

[0010] As a preferred technical solution of the utility model, the angle between the insert plate and the steel plate is 60°.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the RH immersion tube steel bladder that is easy to weld has a reasonable structural design and is easy to operate. By arranging a positioning groove on the straight tube, the plug block that is integrally connected to the steel plate is placed in the positioning groove during welding, which is convenient for workers to weld and saves time and effort. At the same time, the end of the steel plate is ensured to be flat so that the force is evenly applied, which greatly improves the uniformity of the steel bladder's support for the refractory bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is the front view of the utility model;

[0014] Figure 3 It is a top view of the utility model;

[0015] Figure 4 It is a schematic diagram of the structure of a straight tube;

[0016] Figure 5 This is a schematic diagram of the structure of the steel plate.

[0017] In the figure: 1 straight tube, 2 steel plate, 3 threaded steel, 4 positioning groove, 5 plug plate, 6 support frame, 7 connecting plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is a schematic diagram of the present invention). Figure 2 Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0019] See also Figure 1-5The utility model provides a technical solution: a RH immersion tube steel bladder structure that is easy to weld, including a straight cylinder 1, a plurality of steel plates 2 are evenly distributed on the upper end of the straight cylinder 1, the steel plates 2 are welded to the straight cylinder 1, and the outer sides of the plurality of steel plates 2 are surrounded by threaded steel 3. The upper end surface of the straight cylinder 1 is provided with positioning grooves 4 corresponding to the number of steel plates 2. In order to ensure the uniformity of the support of the steel plates 2 to the refractory bricks, the number of the positioning grooves 4 is twelve, and the twelve positioning grooves 4 are evenly distributed on the upper end surface of the straight cylinder 1. The lower end of the steel plate 2 is integrally connected with an insert plate 5, and the size of the insert plate 5 is adapted to the positioning groove 4. When welding, the insert plate 5 at the lower end of the steel plate 2 is inserted into the positioning groove 4, and then the steel plate 2 is welded to the end face of the straight cylinder 1 to ensure that the end faces of all the steel plates 2 are in the same horizontal plane after welding.

[0020] Furthermore, in order to ensure that the welding position of the threaded steel 3 is horizontal, at least two support frames 6 are arranged on the outer side of the straight tube 1, one end of the support frame 6 is welded to the straight tube 1, and the other end of the support frame 6 is welded to the steel plate 2. The welding position of the support frame 6 and the steel plate 2 is the same as the welding position of the bottom threaded steel 3. During welding, the threaded steel 3 is placed on the support frame 6, and after the head and tail welding is completed, the threaded steel 3 is welded to the steel plate 2. At the same time, the support frame 6 plays a fixed supporting role on the steel plate 2, thereby improving the supporting strength of the steel plate 2 to the refractory bricks.

[0021] Furthermore, in order to improve the supporting stability of the threaded steel bar 3 , the number of the supporting frames 6 is four, and the four supporting frames 6 are evenly distributed on the outer side of the straight tube 1 .

[0022] Furthermore, in order to facilitate the welding of multiple threaded steel bars 3, at least one layer of connecting plate 7 is provided at the upper end of the support frame 6. One end of the connecting plate 7 is welded to the steel plate block 2. The threaded steel bars 3 are placed on the connecting plate 7 and welded. If three threaded steel bars 3 are needed, add one layer of connecting plate 7 on the connecting plate 7, and so on.

[0023] Furthermore, in order to improve the supporting strength of the refractory bricks and facilitate the stable placement of the insert plate 5 in the positioning groove 4, the angle between the insert plate 5 and the steel plate 2 is 60°.

[0024] When in use: insert the plug plate 5 at the lower end of the steel plate 2 into the positioning groove 4 at the end of the straight tube 1 to ensure that the protruding length of the steel plate 2 is the same, and then weld the steel plate 2 to the end face of the straight tube 1. At this time, four steel plates 2 are provided with support frames 6, and the support frames 6 are welded to the side of the straight tube 1; according to the fixed position of the threaded steel 3, the support frame 6 and the connecting plate 7 are welded to the corresponding height position of the steel plate 2, and then the threaded steel 3 is placed on the support frame 6 and the connecting plate 7 to ensure that the circular ring surrounded by the threaded steel 3 is in the same plane. After the threaded steel 3 is welded head to tail, the threaded steel 3 is spot welded to the outer side of the steel plate 2.

[0025] The utility model can facilitate the welding of the steel plate 2 so that its end faces are on the same horizontal plane, saving time and effort, and at the same time ensuring that the threaded steel 3 is horizontally welded to the outer side of the steel plate 2 around it, which is convenient for workers to operate, improves the supporting stability of the steel bladder to the refractory bricks, and prolongs the service life of the steel bladder.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A RH immersion pipe steel liner structure that is easy to weld, comprising a straight tube (1), a plurality of steel plates (2) are evenly distributed on the upper end of the straight tube (1), the steel plates (2) are welded to the straight tube (1), and the outer side surfaces of the plurality of steel plates (2) are surrounded by threaded steel (3), characterized in that: The upper end surface of the straight cylinder (1) is provided with positioning grooves (4) corresponding to the number of the steel plates (2), and the lower end of the steel plate (2) is integrally connected with an insert plate (5), and the insert plate (5) is adapted to the size of the positioning grooves (4).

2. The RH impregnated tube steel liner structure that is easy to weld according to claim 1, characterized in that: At least two support frames (6) are arranged on the outer side surface of the straight tube (1), one end of the support frame (6) is welded to the straight tube (1), and the other end of the support frame (6) is welded to the steel plate (2), and the welding position of the support frame (6) and the steel plate (2) is the same as the welding position of the bottom layer of threaded steel (3).

3. The RH impregnated tube steel liner structure that is easy to weld according to claim 2, characterized in that: The number of the support frames (6) is four, and the four support frames (6) are evenly distributed on the outer side surface of the straight tube (1).

4. The RH impregnated tube steel liner structure that is easy to weld according to claim 2, characterized in that: At least one layer of connecting plate (7) is provided at the upper end of the supporting frame (6), and one end of the connecting plate (7) is welded to the steel plate (2).

5. The RH impregnated tube steel liner structure that is easy to weld according to claim 1, characterized in that: The number of the positioning grooves (4) is twelve, and the twelve positioning grooves (4) are evenly distributed on the upper end surface of the straight cylinder (1).

6. The RH impregnated tube steel liner structure that is easy to weld according to claim 1, characterized in that: The included angle between the insert plate (5) and the steel plate (2) is 60°.

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