Converter and backing ring fixing device

Abstract

The utility model provides a converter and backing ring fixing device which fixes a backing ring and a converter body, the converter body is arranged in the backing ring, the fixing device comprises a plurality of supporting seats welded with the outer wall of the converter body and a plurality of connecting seats welded with the top and the bottom of the backing ring respectively, and the connecting seats and the supporting seats are arranged in a one-to-one correspondence mode. And the connecting seat is U-shaped and is clamped and fixed with the supporting seat. By adding the fixing device disclosed by the utility model, the conditions that the converter is unstable in connection, abnormal sound is generated and a converter shell shakes in the use process in the original converter and towing ring fixing mode are eliminated, the safe operation of equipment is ensured, the maintenance time is saved, and the maintenance efficiency is improved. According to the fixing device, spot inspection and spot welding can be carried out under the condition that hidden dangers exist at the joint of a certain independent supporting seat and a converter body or at the joint of a certain independent connecting seat and a towing ring, and the fixing device can be installed within a short overhaul time to eliminate the hidden dangers.

Description

Technical Field

[0001] The utility model relates to the technical field of converter steelmaking equipment, in particular to a fixing device for a converter and a trunnion ring. Background Art

[0002] The existing connection between the converter trunnion ring and the converter shell mainly has two connection methods: spherical hinge and suspension. The spherical hinge connection method is commonly used in a single furnace with three T-shaped spherical hinges. The support is fixed on the trunnion ring, and fastening is implemented by using the large flange and nuts at the top of the shell. The suspension connection is also applied to the single-furnace three-point suspension device. It is necessary to pre-weld the supports at the designated points of the converter and the trunnion ring. The supports are bridged by connecting plates, and articulated bearings are built in to ensure flexibility.

[0003] After running for three to five years, the above two connection methods are often accompanied by abnormal noises or unstable swinging of the shell, posing serious safety hazards to production. Even if all spare parts are available, the replacement operation takes seven to fifteen days. If the shell is detected to be deformed, the maintenance period will be further extended, seriously affecting production efficiency and equipment safety. In view of the long technical maintenance time, complex installation process and high precision requirements, maintenance cannot be carried out until the next furnace lining period, which poses challenges to continuous safe operation and shortening of downtime. Summary of the Utility Model

[0004] In view of the above defects of the prior art, the purpose of the utility model is to provide a fixing device for a converter and a trunnion ring, which eliminates abnormal noises and the shaking of the converter shell, ensures the safe operation of the equipment and saves maintenance time.

[0005] The utility model provides the following technical solutions:

[0006] A fixing device for a converter and a trunnion ring fixes the trunnion ring and the converter body. The converter body is placed inside the trunnion ring. The fixing device includes a plurality of support seats welded to the outer wall of the converter body and a plurality of connection seats welded to the top and bottom of the trunnion ring respectively. The connection seats and the support seats are arranged in one-to-one correspondence. The connection seats are concave-shaped and are clamped and fixed with the support seats.

[0007] Further, four groups of the support seats and the connection seats are respectively arranged corresponding to the top and bottom of the trunnion ring.

[0008] Further, the four groups of the support seats and the connection seats are equally angularly distributed around the axis of the converter body.

[0009] Further, the connection seat includes a pair of L-shaped fixing plates fixedly connected to the trunnion ring. A clamping groove is provided between the two fixing plates. The support seat includes a support plate welded to the converter body. A pair of vertical plates are fixedly connected to the support plate. The side of the vertical plate close to the converter body is welded to the converter body. The support plate is tightly clamped with the clamping groove.

[0010] Further, the vertical plate is a triangular plate.

[0011] Further, the vertical plate has the same radian as the corresponding position of the furnace shell.

[0012] Further, the welding spacing of the two vertical plates on the support plate is 1 / 2 to 3 / 4 of the length of the support plate.

[0013] Further, both the support seat and the connection seat are made of steel plates.

[0014] The beneficial effects of the present utility model are as follows:

[0015] Based on the original fixing scheme of the converter and the trunnion ring, the present utility model implements an improvement measure of installing fixing devices symmetrically at the upper and lower parts of the trunnion ring, eliminating the instability of the converter connection in the original fixing method of the converter and the trunnion ring, the abnormal noise that will occur during use, and the shaking of the converter furnace shell. It reduces the wear of the converter in the original fixing scheme and extends the service life of the converter; and through the method of clamping and fixing multiple groups of support seats and connection seats, it is possible to perform spot inspection and spot welding in the case of potential hazards at the connection between a single support seat and the converter body or between a single connection seat and the trunnion ring. The fixing device of the present utility model can be installed with a shorter repair time to eliminate the potential hazards without waiting for the major overhaul stage of the converter; the addition of the fixing device of the present utility model can complete the installation and welding work within a shorter downtime, and regularly check and spot check in daily life. If it falls off, welding can be carried out again. Description of the Drawings

[0016] Figure 1 It is the front view of the fixing device for the converter and the trunnion ring in the embodiment of the present utility model;

[0017] Figure 2 It is the top view of the fixing device for the converter and the trunnion ring in the embodiment of the present utility model;

[0018] Figure 3 It is the structural schematic diagram of the fixing device for the converter and the trunnion ring in the embodiment of the present utility model.

[0019] Description of the reference numerals: 1. Trunnion ring; 2. Converter body; 3. Support seat; 3.1. Support plate; 3.2. Vertical plate; 4. Connection seat; 4.1. Fixing plate; 4.2. Clamping groove. Detailed Embodiment

[0020] The following describes the embodiments of the present utility model in detail. The following embodiments are implemented on the premise of the technical solution of the present utility model, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present utility model is not limited to the following embodiments.

[0021] Embodiment

[0022] Referring to Figures 1 to 3 , an embodiment of the present utility model provides a fixing device for a converter and a trunnion ring, which fixes the trunnion ring 1 and the converter body 2. The converter body 2 is placed inside the trunnion ring 1. The fixing device includes a plurality of support seats 3 welded to the outer wall of the converter body 2 and a plurality of connecting seats 4 welded to the top and bottom of the trunnion ring 1 respectively. The connecting seats 4 and the support seats 3 are arranged in one-to-one correspondence. The connecting seat 4 is concave-shaped and is snap-fitted and fixed with the support seat 3.

[0023] Based on the original fixing scheme of the converter and the trunnion ring 1, in the embodiment of the present utility model, the fixing device realizes the further fixing of the converter body 2 and the trunnion ring 1 through the support seats 3 welded separately to the converter body 2 and the connecting seats 4 welded separately to the trunnion ring 1, and the snap-fitting and fixing between the support seats 3 and the connecting seats 4; the support seats 3 and the connecting seats 4 are evenly arranged at corresponding positions on the upper and lower sides of the trunnion ring 1. Through the snap-fitting and fixing method of several groups of corresponding support seats 3 and connecting seats 4 one by one, the fixing of the trunnion ring 1 and the converter body 2 in different directions is realized, making the connection of the converter body 2 more stable, eliminating the unstable connection of the converter in the original fixing method of the converter and the trunnion ring 1, the abnormal noise that will occur during use and the shaking of the converter shell, reducing the wear of the converter in the original fixing scheme, and extending the service time of the converter; and through the snap-fitting and fixing method of multiple groups of support seats 3 and connecting seats 4, when there are potential hazards at the connection between a single support seat 3 and the converter body 2 or at the connection between a single connecting seat 4 and the trunnion ring 1, spot inspection and spot welding can be carried out, and the fixing device of the present utility model can be installed with a shorter maintenance time, eliminating the potential hazards without waiting for the major overhaul stage of the converter. Adding the fixing device of the present utility model can complete the installation and welding work within a shorter shutdown time, regularly check and spot-check in daily life, and if it falls off, welding can be carried out again. In addition, the converter body 2 is welded to the support seat 3, the trunnion ring 1 is welded to the connecting seat 4, and the support seat 3 and the trunnion ring 1 are not welded. The trunnion ring 1 and the converter body 2 are further fixed through the snap-fitting and fixing method of the connecting seat 4 and the support seat 3. The converter body 2 and the trunnion ring 1 do not directly contact, which can prevent the deformation of the trunnion ring 1 caused by the thermal deformation of the converter body 2.

[0024] In this embodiment, four groups of support seats 3 and connecting seats 4 are respectively arranged corresponding to the top and bottom of the trunnion ring 1, and the four groups of support seats 3 and connecting seats 4 are equally angularly distributed around the axis of the converter body 2.

[0025] Four groups of support seats 3 and connecting seats 4 are symmetrically installed at corresponding positions on the upper and lower parts between the converter body 2 and the trunnion ring 1, which can realize the fixation in the up and down, left and right, front and back directions between the trunnion ring 1 and the converter body 2, and prevent the relative movement between the converter body 2 and the trunnion ring 1.

[0026] The connecting seat 4 includes a pair of L-shaped fixing plates 4.1 fixedly connected to the drag ring 1. A clamping groove 4.2 is provided between the two fixing plates 4.1. The support seat 3 includes a support plate 3.1 and two vertical plates 3.2. One side of the support plate 3.1 close to the converter body 2 is welded to the converter body 2. One side of the vertical plate 3.2 close to the converter body 2 is welded to the converter body 2, and the vertical plate is welded to the support plate 3.1. The support plate 3.1 is clamped between two oppositely arranged fixing plates 4.1. The support plate 3.1 is clamped with the clamping groove 4.2, the support plate 3.1 abuts against the drag ring 1, and there is no gap between both sides of the support plate 3.1 and the adjacent fixing plates 4.1.

[0027] The vertical plate 3.2 is a triangular plate and has the same radian as the corresponding position of the converter body 2; the welding spacing of the vertical plate 3.2 on the support plate 3.1 is 1 / 2 to 3 / 4 of the length of the support plate 3.1; both the support seat 3 and the connecting seat 4 are made of steel plates.

[0028] The implementation principle of a converter and drag ring fixing device provided by the present utility model is as follows: during use, eight groups of support seats 3 are welded separately on the outer wall of the converter body 2. The same side surfaces of the support plate 3.1 and the vertical plate 3.2 are welded to the outer wall of the converter body 2. Eight groups of connecting seats 4 are welded separately on the drag ring 1. The fixing plates 4.1 of the connecting seat 4 are welded to the drag ring 1. The eight groups of connecting seats 4 are evenly distributed on the top and bottom of the drag ring 1, and the connecting seat 4 and the support seat 3 are arranged in one-to-one correspondence. Four groups are welded correspondingly on the top and bottom of the drag ring 1 respectively. The support seat 3 and the drag ring 1 are not welded. The clamping groove 4.2 formed by the two L-shaped fixing plates 4.1 is clamped with the support plate 3.2, and the support plate 3.1 abuts against the drag ring 1, realizing the fixation of the converter body 2 and the drag ring 1 in all directions.

[0029] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present utility model without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A device for fixing a converter and a support ring, fixing a drag ring and a converter body, wherein the converter body is placed in the drag ring, characterized in that: The fixing device includes a plurality of supporting seats welded to the outer wall of the converter body and a plurality of connecting seats respectively welded to the top and bottom of the drag ring. The connecting seats are arranged one by one corresponding to the supporting seats. The connecting seats are concave-shaped and are fixedly connected to the supporting seats.

2. The converter and support ring fixing device according to claim 1, characterized in that: Four groups of support seats and connecting seats are respectively arranged on the top and bottom of the drag ring.

3. The converter and support ring fixing device according to claim 2, characterized in that: The four groups of support seats and connecting seats are distributed at equal angles around the axis of the converter body.

4. The converter and support ring fixing device according to claim 1, characterized in that: The connecting seat includes a pair of L-shaped fixing plates fixedly connected to the drag ring, and a clamping groove is provided between the two fixing plates. The supporting seat includes a supporting plate, and the supporting plate is welded to the converter body. The supporting plate is fixedly connected to a pair of vertical plates, and the side of the vertical plate close to the converter body is welded to the converter body, and the supporting plate is tightly clamped with the clamping groove.

5. The converter and support ring fixing device according to claim 4, characterized in that: The vertical plate is a triangular plate.

6. The converter and support ring fixing device according to claim 4, characterized in that: The vertical plate has an arc that is the same as the arc of the corresponding position of the furnace shell.

7. The converter and support ring fixing device according to claim 4, characterized in that: The welding distance between the two vertical plates on the support plate is 1 / 2 to 3 / 4 of the length of the support plate.

8. The converter and support ring fixing device according to any one of claims 1 to 7, characterized in that: The supporting seat and the connecting seat are both made of steel plates.

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