CN210458247U

CN210458247U - Device for replacing converter lifting smoke hood

Info

Publication number: CN210458247U
Application number: CN201920730490.9U
Authority: CN
Inventors: 李洪博; 王志爽; 何东升; 邓晓凝; 李宏林
Original assignee: Tangshan Iron and Steel Group Co Ltd; HBIS Co Ltd Tangshan Branch
Current assignee: Tangshan Iron and Steel Group Co Ltd; HBIS Co Ltd Tangshan Branch
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-05-05
Anticipated expiration: 2029-05-21

Abstract

The utility model discloses a device for replacing a converter lifting smoke hood, which comprises a slide rail, a flat frame plate and a supporting vertical frame; slide rail fixed connection is on the front and back both sides of flat frame board, and the left part of flat frame board is equipped with the window that blocks converter tray upper end, the top surface and the flat frame board right part fixed connection of support grudging post, the bottom surface and the converter platform fixed connection of support grudging post. When the utility model is operated, the lifting smoke hood is divided into an upper section and a lower section, and the lifting lugs at the right end part of the flat frame plate are matched with the chain block to respectively draw the two sections of lifting smoke hoods to the truck crane position; the utility model has the characteristics of simple structure, convenient operation under the prerequisite of the protection furnace body, swiftly accomplish the lift petticoat pipe safely and change.

Description

Device for replacing converter lifting smoke hood

Technical Field

The utility model belongs to the technical field of metallurgical maintenance instrument technique and specifically relates to a change device of converter lift petticoat pipe.

Background

The trunnion ring and the trunnion on the periphery of the converter main body of the steel plant are main components for supporting the converter body and transmitting the tilting moment, are one of key devices of a converter body system, and the converter body is connected with the trunnion ring through a connecting device. Because the furnace body is heavy and can be tilted plus or minus 360 degrees along with the trunnion ring through the connecting device, and the furnace body and the trunnion ring can be deformed under the action of mechanical and thermal loads, on one hand, the furnace body must be firmly fixed on the trunnion ring to ensure that the furnace body load can be uniformly transferred to the trunnion ring and the correct position of the furnace body in the trunnion ring can be kept when the converter is at any position, and on the other hand, the furnace body and the trunnion ring can be thermally expanded and can avoid the displacement from being limited under the condition that relative displacement is generated in the radial direction and the axial direction, so that a supporting system can bear additional load, and the furnace shell or the trunnion ring can be seriously deformed and damaged. The section of the backing ring is of a rectangular box structure, and a cooling water channel is arranged in the backing ring for reducing thermal stress.

The lifting smoke hood is arranged above the converter main body to ensure that the air pressure inside and outside the smoke hood is approximately equal, so that the condition that the operating environment in front of the converter is deteriorated due to the escape of furnace gas is avoided, and the quality of recovered coal gas is not reduced due to the fact that air is sucked is avoided. There is the clearance between lift petticoat pipe and the converter fire door, if the clearance is too big in the smelting process, a large amount of smoke and dust can be passed through the mode of flue gas fluctuation and escape from here and worsen the factory building internal environment, carries out the lift operation to the lift petticoat pipe in smelting period, adjusts the clearance between fire door and the petticoat pipe to with the control of fire door micro-differential pressure in a reasonable within range. When tapping, slag discharging, scrap steel adding and molten iron adding are finished in the blowing process, the smoke hood can be lifted without hindering the tilting of the converter.

In the prior art, a special tool for replacing the lifting smoke hood is not provided, and the lifting smoke hood is horizontally moved out of the upper part of the furnace body to be replaced when a furnace lining is replaced. The converter of the Tang-Steel Rolling Mill is newly improved in 2014, the upper space of the converter is limited, and the smooth production is affected and the converter needs to be replaced urgently because the lifting smoke hood has serious water leakage. Through computer three-dimensional animation simulation, the upper space of the converter is limited, and according to the condition, the furnace body cannot be damaged when the lifting smoke hood is replaced. Therefore, on the premise of protecting the furnace body, how to quickly replace the lifting smoke hood in a narrow space becomes an important issue of maintenance work.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a device of change converter lift petticoat pipe is provided, change the lift petticoat pipe through the method of rotating furnace body cooperation truck crane, have simple structure, convenient operation is swift, guarantees furnace body safety, saves labour and time, reduces the characteristics of potential safety hazard.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a device for replacing a converter lifting smoke hood comprises a slide rail, a flat frame plate and a supporting vertical frame; slide rail fixed connection is on the front and back both sides of flat frame board, the left part of flat frame board is equipped with the window that can block converter tray upper end, the top surface and the flat frame board right part fixed connection of support grudging post, the bottom surface and the converter platform fixed connection of support grudging post.

Foretell device of change converter lift petticoat pipe still includes the chain block, plat frame board right-hand member portion is equipped with fixed lug, the right end hook of chain block is in the lug, and the left end of chain block is equipped with the left end hook that can be connected with the lift petticoat pipe, and the wire rope of chain block is located the plat frame board.

According to the device for replacing the lifting smoke hood of the converter, the top surface of the supporting vertical frame is in butt joint with the right part of the flat frame plate through the bolt, and the bottom surface of the supporting vertical frame is welded with the converter platform.

The utility model provides a device for replacing a converter lifting smoke hood, which is provided with a slide rail, a flat frame plate and a supporting vertical frame; slide rail fixed connection is on the front and back both sides of flat frame board, and the left part of flat frame board is equipped with the window that blocks converter tray upper end, the top surface and the flat frame board right part fixed connection of support grudging post, the bottom surface and the converter platform fixed connection of support grudging post. When the utility model is operated, the lifting smoke hood is divided into an upper section and a lower section to fall down, and the lifting lugs at the right end part of the horizontal frame plate are matched with the chain block to respectively pull the two sections of lifting smoke hoods to the truck crane position; the lifting smoke hood has the characteristics of simple structure, convenience in operation and capability of rapidly and safely completing the replacement of the lifting smoke hood on the premise of protecting the furnace body.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of a converter body;

fig. 3 is a construction schematic diagram for replacing the lifting smoke hood by adopting the device.

The parts in the figures are numbered: the device comprises a slide rail 1, a flat frame plate 2, a window 3, a converter trunnion ring 4, a left end hook 5, a chain block 6, a right end hook 7, a lifting lug 8, a bolt 9, a supporting vertical frame 10, a converter platform 11, a converter body 12, a trunnion 13 on the trunnion ring, a lifting smoke hood 14 and a furnace body bottom surface 15, wherein W is the width of the window 3 in the left-right direction, and B is the width of the converter trunnion ring 4 in the left-right direction.

The specific implementation mode is as follows:

in fig. 1, reference numeral W denotes a width of the window 3 in the left-right direction, and reference numeral B denotes a width of the converter trunnion ring 4 in the left-right direction. The upper end of the trunnion ring 4 of the converter can be clamped only by making the width W of the window 3 in the left-right direction slightly larger than the width B of the trunnion ring 4 in the left-right direction. The construction steps adopting the device are as follows: firstly, the converter body 12 is rotated to enable the bottom surface 15 of the converter body to face to the left, and the converter backing ring 4 is kept in a vertical state; secondly, the window 3 at the left part of the flat frame plate 2 clamps the upper end part of the converter trunnion ring 4 by utilizing the stability of the converter trunnion ring 4; thirdly, the top surface of the supporting vertical frame 10 is butted with the right part of the flat frame plate 2 through a bolt 9, and the bottom surface of the supporting vertical frame 10 is welded with the converter platform 11; fourthly, the lifting smoke hood is dismounted twice and respectively falls on the slide rail 1 on the upper left part of the flat frame plate 2; fifthly, the lifting smoke hood 14 is moved out along the slide rail 1 by the chain block 6. In order to reduce the friction force between the smoke cage 14 and the slide rail 1, a lubricant can be coated on the surface of the slide rail. The structure ensures the stability of the whole device, ensures safe and efficient construction on the premise of protecting the converter body 12, and completes the maintenance task of replacing the lifting smoke hood. And installing a new lifting smoke hood 14 for reverse operation. And (5) after the construction is finished, removing the flat frame plate 2 and the supporting vertical frame 10, and restoring the converter body 12 to a normal production state.

Claims

1. The utility model provides a change device of converter lift petticoat pipe which characterized in that: comprises a slide rail (1), a flat frame plate (2) and

a support stand (10); slide rail (1) fixed connection is on the front and back both sides of platform board (2), the left part of platform board (2) is equipped with window (3) that can block converter trunnion ring (4) upper end, the top surface and the platform board (2) right part fixed connection of support grudging post (10), the bottom surface and converter platform (11) fixed connection of support grudging post (10).

2. The apparatus for replacing a lift hood of a converter according to claim 1, wherein: still include chain block (6), platform board (2) right-hand member portion is equipped with fixed lug (8), right end hook (7) of chain block (6) hook in lug (8), the left end of chain block (6) is equipped with left end hook (5) that can be connected with lift petticoat pipe (14), and the wire rope of chain block (6) is located platform board (2).

3. The apparatus for replacing a lift hood of a converter according to claim 2, wherein: the top surface of the supporting vertical frame (10) is butted with the right part of the flat frame plate (2) through a bolt (9), and the bottom surface of the supporting vertical frame (10) is welded with the converter platform (11).