Cage for overhauling converter flue

Abstract

The utility model relates to a suspension cage for overhauling a converter flue, and belongs to the technical field of metallurgical equipment maintenance in the metallurgical industry. According to the technical scheme, the device comprises a top frame (2), a bottom frame (3), stand columns (4), supporting cross beams (9), lifting lugs (10) and a bottom plate (11), the top frame (2) and the bottom frame (3) are connected together through the stand columns (4), a plurality of connecting rods which are arranged vertically are arranged between every two connected stand columns (4), the supporting cross beams (9) and the lifting lugs (10) are arranged on the top frame (2), the bottom plate (11) is arranged on the bottom frame (3), and the supporting cross beams (9) and the lifting lugs (10) are arranged on the bottom plate (11). The top frame (2) and the bottom frame (3) are both rectangular frames, and the top frame (2) and the bottom frame (3) are connected together through four stand columns (4) to form the rectangular suspension cage (1). According to the utility model, the converter flue can be effectively inspected and repaired, the safety of construction operation can be ensured, and the maintenance time is shortened.

Description

Technical Field

[0001] The utility model relates to a hanging cage for repairing a converter flue, belonging to the technical field of metallurgical equipment repair in the metallurgical industry. Background Art

[0002] The converter vaporization cooling system is one of the important equipment in converter steelmaking. The converter flue, as the main equipment of the vaporization cooling system, plays the role of transporting high-temperature flue gas and generating high-value-added saturated steam. Due to its harsh working conditions and complex operating environment, it is greatly affected by alternating thermal stress and has a high failure rate. Regular inspection and maintenance are required. The reliable operation of the converter flue is the key factor to ensure stable converter production.

[0003] At present, the common inspection method used by various steel companies is to use the downtime to level the converter, place a ladder on the converter unloading ring, and inspect the lower flue. However, the upper flue is too high to be reached by the ladder, so the only option is to erect a scaffolding on the converter body. However, this method consumes a lot of manpower and material resources, and the construction time is long, which reduces the production efficiency of the converter. Whether using a ladder to inspect the lower flue or erecting a scaffolding to inspect the upper flue, both have an adverse impact on the safety of the construction workers. Therefore, it is very necessary to design a simple and safe flue inspection device. Utility Model Content

[0004] The purpose of the utility model is to provide a hoisting cage for converter flue maintenance, which can effectively inspect and repair the converter flue, ensure the safety of construction operations, shorten the maintenance time, improve the work efficiency of converter flue maintenance, and solve the problems existing in the background technology.

[0005] The technical solution of the utility model is:

[0006] A cage for inspecting and repairing a converter flue comprises a top frame, a bottom frame, columns, supporting beams, lifting ears and a bottom plate. The top frame and the bottom frame are connected together by a plurality of columns. A plurality of connecting rods arranged vertically are provided between the two connected columns. The top frame is provided with supporting beams and lifting ears, and the bottom frame is provided with a bottom plate.

[0007] The top frame and the bottom frame are both rectangular frames, and the top frame and the bottom frame are connected together by four columns to form a rectangular cage.

[0008] The supporting cross beams on the top frame are fixed on the top frame and arranged relatively in four groups, with two beams in each group.

[0009] The lifting ears on the top frame are two that are fixed on the top frame and arranged opposite to each other.

[0010] The connecting rods arranged up and down between the two connected columns include movable rods and fixed rods. The three sides of the rectangular cage are fixed rods arranged up and down, and the other side is a movable rod arranged up and down, or the upper and lower ends are fixed rods and the middle is a movable rod.

[0011] Both ends of the movable rod are respectively provided with an insertion rod which is an integral structure with the movable rod, and a socket which matches the insertion rod is provided on the column.

[0012] A well-shaped frame is fixed in the bottom frame, and the bottom plate is fixed on the well-shaped frame.

[0013] The beneficial effects of the utility model are: the device has a reasonable structure, low production cost, is safe and reliable, can perform comprehensive inspection and repair of the flue interior, increases the safety of construction operations, shortens the maintenance time of the converter flue, and improves the efficiency of converter production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a partial view of the utility model;

[0016] Figure 3 This is a schematic diagram of the application of the utility model;

[0017] In the figure: cage 1, top frame 2, bottom frame 3, column 4, movable rod 5, socket 6, fixed rod 7, cross frame 8, supporting beam 9, lifting lug 10, bottom plate 11, movable section 12, fixed section 13, movable smoke hood 14, converter body 15, auxiliary muzzle 16, oxygen muzzle 17. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Refer to the attached Figure 1-3 A cage for converter flue maintenance comprises a top frame 2, a bottom frame 3, columns 4, supporting beams 9, lifting ears 10 and a bottom plate 11. The top frame 2 and the bottom frame 3 are connected together by multiple columns 4. Multiple connecting rods arranged up and down are provided between the two connected columns 4. The top frame 2 is provided with supporting beams 9 and lifting ears 10, and the bottom frame 3 is provided with a bottom plate 11.

[0020] In this embodiment, refer to the attached Figure 1-3 The cage includes a top frame 2, a bottom frame 3, a column 4, a fixed rod 7, a movable rod 5, a socket 6, a lifting lug 10, a supporting beam 9, a bottom plate 11 and a tic-tac-toe frame 8, wherein:

[0021] The top frame 2 and the bottom frame 3 are both rectangular frames. The top frame 2 and the bottom frame 3 are respectively welded firmly to the four columns 4 to form a rectangular cage 1. The fixed rods 7 are evenly distributed on the four sides of the rectangular cage 1 and are firmly welded to the columns 4. The sockets 6 are evenly arranged in the middle part of one side of the cage 1. The movable rods 5 have plug-in rods at both ends, and the plug-in rods are inserted into the sockets 6. The lifting ears 10 are welded to both sides of the top frame 2 for easy lifting. The supporting beams 9 are evenly distributed on the top frame 2. A cross frame 3 is provided at the bottom of the cage 1 to support the construction personnel. The cross frame 3 is covered with a bottom plate 11, and the bottom plate 11 is firmly welded to the bottom frame 3.

[0022] In this embodiment, refer to the attached Figure 1-3 The cage adopts a frame structure, and all the connection parts are fully welded to ensure the strength of the structure; the frame size of the cage is 500mm, and the construction workers can turn around in the cage to check and repair defects in various parts of the flue; the movable rod 5 can be disassembled at will, which is suitable for construction workers of different heights. The insertion rods at both ends of the movable rod 5 are of sufficient length to ensure that they are firmly combined with the sockets, and the corresponding number of movable rods can be removed according to the size of the forward leaning angle of the construction workers; the well frame 8 is a well-shaped structure, which is firmly welded to the bottom frame 3 to provide sufficient bearing capacity for the construction workers; the bottom plate 11 adopts a patterned plate to prevent slipping; there are 8 supporting beams in total, which are evenly distributed on the four sides of the cage.

[0023] The method of using the utility model is as follows:

[0024] The utility model has two main functions: function one: to inspect the appearance of the converter flue cooling water pipe, check the slag condition, and measure the wall thickness; function two: to weld and repair the leaking points of the flue, or to replace them partially. When the converter flue needs to be inspected and repaired, first stop smelting the converter, move the furnace mouth to the steel-discharging position, reduce the speed of the primary dust removal fan to 600r / min, turn off the nitrogen sealing gas source of the oxygen lance, hang two steel wire ropes of equal length on the lifting lug 10, use a remote-controlled overhead crane to lift the cage 1 to the top of the oxygen lance mouth 17, slowly lower the cage into the flue until the supporting beam 9 contacts and stabilizes the top flange of the oxygen lance mouth 17, remove the lifting wire rope, and the operator wears a safety belt and goes down along the fixed rod 7 to the bottom of the cage. According to the actual situation of the work content, location, and height of the operator, remove several movable rods 5, and then carry out inspection, repair and other operations. After the operation is completed, the movable rod 5 is restored, the operator climbs out of the cage, and uses the overhead crane to lift the cage to the storage location. At this point, the inspection is completed.

Claims

1. A hanging cage for converter flue maintenance, characterized by: The invention comprises a top frame (2), a bottom frame (3), columns (4), a supporting beam (9), a lifting lug (10) and a bottom plate (11), wherein the top frame (2) and the bottom frame (3) are connected together by a plurality of columns (4), a plurality of connecting rods arranged vertically are provided between the two connected columns (4), a supporting beam (9) and a lifting lug (10) are provided on the top frame (2), and a bottom plate (11) is provided on the bottom frame (3); the connecting rods arranged vertically between the two connected columns (4) comprise a movable rod (5) and a fixed rod (7), the three sides of the rectangular cage (1) are all fixed rods (7) arranged vertically, and the other side is a movable rod (5) arranged vertically, or the upper and lower ends are fixed rods (7) and the middle is a movable rod (5); the two ends of the movable rod (5) are respectively provided with an insertion rod which is an integral structure with the movable rod (5), and the columns (4) are provided with a socket (6) which matches the insertion rod.

2. The converter flue maintenance cage according to claim 1, characterized in that: The top frame (2) and the bottom frame (3) are both rectangular frames, and the top frame (2) and the bottom frame (3) are connected together by four columns (4) to form a rectangular hanging cage (1).

3. The converter flue maintenance cage according to claim 2, characterized in that: The supporting cross beams (9) on the top frame (2) are fixed on the top frame (2) and arranged relatively in four groups, with two beams in each group.

4. The converter flue maintenance cage according to claim 2, characterized in that: The lifting ears (10) on the top frame (2) are two fixed on the top frame (2) and arranged opposite to each other.

5. The converter flue maintenance cage according to claim 1, characterized in that: A well-shaped frame (8) is fixed inside the bottom frame (3), and the bottom plate (11) is fixed on the well-shaped frame (8).

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