Dismounting device for rotating joint of converter

Abstract

The utility model relates to a converter rotating joint dismounting device, and belongs to the technical field of converter equipment maintenance in the metallurgical industry. According to the technical scheme, the tool comprises a first jackscrew (1), a first threaded sleeve (2), supporting plates (3), an insertion hole (4), a second threaded sleeve (5), a second jackscrew (6) and an insertion rod (7), the first jackscrew (1) is a right-hand thread bolt and matched with the first threaded sleeve (2), the second jackscrew (6) is a left-hand thread bolt and matched with the second threaded sleeve (5), the supporting plates (3) are the same and are evenly distributed in the circumferential direction, and the insertion hole (4) is formed in the insertion rod (7). An inserting hole (4) matched with the inserting rod (7) is formed in the center of each supporting plate (3), and the first threaded sleeve (2) and the second threaded sleeve (5) are welded to the two ends of the supporting plates (3) respectively to form an overall frame. The rotary joint replacing device has the advantages that the rotary joint replacing work can be efficiently and safely completed, the working efficiency is improved, it can be guaranteed that equipment is not damaged, and the safety of constructors can also be guaranteed.

Description

Technical Field

[0001] This utility model relates to a converter rotary joint disassembly device, belonging to the technical field of converter equipment maintenance in the metallurgical industry. Background Technology

[0002] A converter rotary joint is a dynamic rotary sealing device that transfers cooling fluid, gaseous, and pressurized media from a static system to a dynamic rotating system. Based on the trunnion, it is classified into drive-end rotary joints and driven-end rotary joints; based on the fluid medium, it is classified into water swirl joints and air swirl joints. Water swirl joints primarily cool the furnace cap, furnace mouth, support ring, and trunnion. Air swirl joints mainly transmit argon or nitrogen gas to protect the furnace bottom during converter steelmaking. If the converter is equipped with a sliding plate slag-blocking mechanism, the air swirl joint also needs to be connected to a hydraulic pipeline to achieve automatic control of the sliding plate slag-blocking hydraulic cylinder. The hydraulic pipeline operates at high pressure, requiring strict sealing. The rotary joint and trunnion connection uses a snap-fit ​​type, and there is a short section seal with an internal rubber ring. This requires that the rotary joint not be subjected to significant impact during disassembly, and that disassembly be carried out symmetrically to avoid damage to the rubber seal and contact surface. Existing disassembly methods involve pulling with a hand chain hoist or striking with a flat chisel, which easily damages the rubber seal and contact surface. Therefore, designing a simple, efficient, and safe disassembly device is essential. Utility Model Content

[0003] The purpose of this utility model is to provide a converter rotary joint disassembly device that can efficiently and safely complete the rotary joint replacement work, which not only improves the work efficiency, but also ensures that the equipment is not damaged and the safety of the construction personnel, thus solving the problems existing in the background technology.

[0004] The technical solution of this utility model is:

[0005] A converter rotary joint disassembly device includes a first set screw, a first threaded sleeve, a support plate, an insertion hole, a second threaded sleeve, a second set screw, and an insertion rod. The first set screw is a positive thread bolt that mates with the first threaded sleeve, and the second set screw is a negative thread bolt that mates with the second threaded sleeve. There are multiple identical support plates evenly distributed in the circumferential direction. Each support plate has an insertion hole at its center that mates with the insertion rod. The first threaded sleeve and the second threaded sleeve are welded to both ends of the support plate to form an overall frame.

[0006] The overall frame is a columnar structure that is thicker in the middle and thinner at both ends.

[0007] The support plates are six identical plates, which are evenly distributed in a circumferential direction.

[0008] The support plate is an arc-shaped plate.

[0009] The diameter of the insertion rod matches the diameter of the insertion hole.

[0010] The beneficial effects of this utility model are: the device has a reasonable structure, low manufacturing cost, and is safe and reliable. It can complete the rotary joint replacement work efficiently and safely, which not only improves the work efficiency, but also ensures that the equipment is not damaged, thereby improving the production efficiency of the converter. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the insertion rod of this utility model;

[0013] Figure 3 This is a schematic diagram illustrating the application of this utility model;

[0014] In the diagram: 1. Set screw 1; 2. Threaded sleeve 1; 3. Support plate; 4. Insertion hole; 5. Threaded sleeve 2; 6. Set screw 2; 7. Insert rod; 8. Trunnion; 9. Disassembly device; 10. Rotary joint. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and examples.

[0016] See attached document Figure 1-3 A converter rotary joint disassembly device includes a set screw 1, a threaded sleeve 2, a support plate 3, an insertion hole 4, a threaded sleeve 5, a set screw 6, and an insertion rod 7. The set screw 1 is a straight thread bolt that mates with the threaded sleeve 2, and the set screw 6 is a reverse thread bolt that mates with the threaded sleeve 5. There are multiple identical support plates 3, evenly distributed in the circumferential direction. Each support plate 3 has an insertion hole 4 at its center that mates with the insertion rod 7. The threaded sleeve 2 and the threaded sleeve 5 are welded to both ends of the support plate 3, forming an overall frame.

[0017] In this embodiment, refer to the appendix Figure 1-3 The converter rotary joint disassembly device includes a top screw 1, a threaded sleeve 2, a support plate 3, a socket 4, a threaded sleeve 2 5, a top screw 2 6, and a plug rod 7, wherein:

[0018] Set screw 1 is a straight thread bolt that mates with threaded sleeve 2. Set screw 6 is a reverse thread bolt that mates with threaded sleeve 5. Support plate 3 is an arc-shaped plate, consisting of 6 identical pieces evenly distributed circumferentially. A insertion hole 4 is opened at the center of support plate 3. Threaded sleeve 2 and threaded sleeve 5 are welded to the two end faces of support plate 3 respectively, forming a frame structure that is thick in the middle and thin at both ends. Insert rod 7 is slightly smaller than insertion hole 4 and can be inserted into insertion hole 4. Rotating insertion rod 7 can extend and retract the disassembly device 9 along the axial direction.

[0019] See attached document Figure 1-3The disassembly device 9 adopts a frame structure that is thicker in the middle and thinner at both ends. The support plate 3 and the threaded sleeves at both ends are fully welded to ensure the strength of the structure. The set screw 1 and set screw 2 6 use positive and negative thread bolts. When the support plate 3 is rotated, both ends contract or extend simultaneously. The threads of the threaded sleeve 1 2 and set screw 1 1 are matched, and the threads of the threaded sleeve 2 5 and set screw 2 6 are matched. There are a total of 6 support plates 3, which are evenly distributed along the circumference for easy operation. The size of the insertion rod 7 is slightly smaller than that of the insertion hole 4. Using the lever principle, the insertion rod 7 can be easily rotated to drive the disassembly device 9 to rotate. The minimum length of the disassembly device 9 is less than the installation distance between the trunnion 8 and the rotary joint 10, so as to facilitate the insertion of the disassembly device 9.

[0020] The method of using this utility model is as follows:

[0021] To replace the rotary joint 10 of the converter, first, tilt the furnace body to zero degrees, de-energize the tilting system and hang a sign, close all media valves and take energy isolation measures. Suspend a hand-operated hoist at the top of the center of gravity of the rotary joint 10, attach the hoisting wire rope, and pull the hand-operated hoist so that the rotary joint 10 is just under force. First, remove the swing supports on both sides of the rotary joint 10, and then remove the connecting bolts between the rotary joint 10 and the trunnion 8. Then, at least two disassembly devices 9 need to be used together. Tighten the first and second settling screws 6 at both ends of the disassembly device 9 back to the shortest distance. Place the two disassembly devices 9 symmetrically on the left and right sides in the gap between the trunnion 8 and the rotary joint 10. Then, rotate the insertion rod 7 to make the first and second settling screws 6 gradually move outward until they are slightly under force and then stop. Then, rotate the insertion rods 7 of the two disassembly devices 9 simultaneously and slowly to make the gap surfaces on both sides evenly under force until the rotary joint 10 is completely disengaged from the trunnion 8. Then, pull the hand-operated hoist to make the rotary joint 10 land smoothly. At this point, the disassembly of the rotary joint 10 is completed.

[0022] It should be further noted that this utility model must be used in pairs, with no fewer than two, to ensure that the parts to be disassembled are evenly stressed. If three of these utility models are used at the same time, they must be evenly arranged on a 360° circumference, that is, the included angle between two adjacent utility models is 120°.

Claims

1. A converter rotary union disassembly device, characterized by: It includes a set screw 1 (1), a threaded sleeve 1 (2), a support plate (3), a socket (4), a threaded sleeve 2 (5), a set screw 2 (6), and a plug rod (7). The set screw 1 (1) is a straight thread bolt that mates with the threaded sleeve 1 (2). The set screw 2 (6) is a reverse thread bolt that mates with the threaded sleeve 2 (5). There are multiple identical support plates (3) that are evenly distributed in the circumferential direction. Each support plate (3) has a socket (4) at its center that mates with the plug rod (7). The threaded sleeve 1 (2) and the threaded sleeve 2 (5) are welded to both ends of the support plate (3) to form an overall frame.

2. A rotary joint dismounting device for a converter according to claim 1, characterized in that: The overall frame is a columnar structure that is thicker in the middle and thinner at both ends.

3. A rotary union disassembly device according to claim 2, wherein: The support plates (3) are six identical, and the six support plates (3) are evenly distributed in the circumferential direction.

4. A rotary union disassembly device according to claim 3, wherein: The support plate (3) is an arc-shaped plate.

5. A rotary union disassembly device according to claim 1, wherein: The diameter of the insertion rod (7) matches the diameter of the insertion hole (4).

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