Device for evaporative cooling of fixed flue of converter

Abstract

The utility model discloses a device for vaporizing and cooling a fixed flue of a converter, which relates to the technical field of overhaul of converter steelmaking equipment in the metallurgical industry, and comprises a fixed flue, a tail flue, a fixed hoisting tool and a movable hoisting device, the fixed flue comprises a first lower-section flue, a first middle-section flue, a first upper-section flue and a first connecting pipe; the fixed hoisting tool is used for hoisting the first lower-section flue, the first middle-section flue, the first upper-section flue and the first connecting pipe to designed positions; the movable hoisting device is used for hoisting the second lower-section flue, the second interruption flue, the second upper-section flue and the second connecting pipe to designed positions, the structure is simple, and the replacement safety of the evaporative cooling flue is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of the overhaul of converter steelmaking equipment in the metallurgical industry, in particular to a device for the fixed flue of converter vaporization cooling. Background Art

[0002] At present, the converter vaporization cooling flue is an important equipment in the converter steelmaking process. It is an essential equipment for absorbing the heat and dust generated during the converter smelting process, and it is the flue of the waste heat boiler and dust removal system for negative energy steelmaking in the converter. The working environment is harsh, and it bears the high-temperature change of alternating cold and heat. Due to the harsh working conditions, the vaporization cooling flue leaks water at the end of its service life, bringing major hidden dangers to the safe production of the converter and seriously threatening the lives and property safety of personnel.

[0003] When the service life of the vaporization cooling flue expires, replacement needs to be organized. However, the converter vaporization cooling flue is in a compact structure, and the space position is very limited. It is very difficult to replace the fixed flue, and most of the implementation processes involve large-scale hoisting or even dangerous and major operations. The implementation process is highly dangerous and is likely to cause casualties or major economic losses. Content of the Utility Model

[0004] The purpose of the utility model is to provide a device for the fixed flue of converter vaporization cooling, so as to solve the problems existing in the above-mentioned prior art, with a simple structure and effectively improving the safety of replacing the vaporization cooling flue.

[0005] To achieve the above purpose, the utility model provides the following scheme:

[0006] The utility model provides a device for the fixed flue of converter vaporization cooling, including: a fixed flue, a tail flue, a fixed hoisting tool, and a movable hoisting device. The fixed flue includes a first lower-section flue, a first middle-section flue, a first upper-section flue, and a first connecting pipe. The first lower-section flue is connected to the movable flue through a flange. The first lower-section flue is used for welding and fixing with the first middle-section flue. The first middle-section flue is sleeved and fixed at the bottom of the first connecting pipe. The first upper-section flue is sleeved and fixed at the top of the first connecting pipe. The tail flue includes a second lower-section flue, a second middle-section flue, a second upper-section flue, and a second connecting pipe. The second lower-section flue is used for welding and fixing with the second middle-section flue. The second middle-section flue is sleeved and fixed at the bottom of the second connecting pipe. The second upper-section flue is sleeved and fixed at the top of the second connecting pipe. The top of the second upper-section flue is used for fixing with the first upper-section flue through a flange. The fixed hoisting tool is arranged on the high bay of the converter, and the fixed hoisting tool is used for hoisting the first lower-section flue, the first middle-section flue, the first upper-section flue, and the first connecting pipe to the designed position. The movable hoisting device is used for hoisting the second lower-section flue, the second middle-section flue, the second upper-section flue, and the second connecting pipe to the designed position.

[0007] Preferably, the fixed hoisting tool includes a charging bay crane and an oxygen lance bay crane.

[0008] Preferably, it further includes a plurality of platforms, and a chain block or an electric hoist is arranged below the platforms.

[0009] Preferably, the movable hoisting device is a ground hydraulic truck crane in the tapping bay.

[0010] The utility model has achieved the following technical effects compared with the prior art:

[0011] The utility model provides a device for the fixed flue of converter vaporization cooling. By fabricating the fixed flue and the tail flue in sections, reducing the single-piece weight and the external dimensions, and adopting a recommended hoisting with a relatively high safety factor, the installation and positioning of the flue can be realized, the risk coefficient during the construction process is reduced, the construction period is shortened. In addition, by providing a first connecting pipe and a second connecting pipe, it is used to adjust the error between the pipes after installation and alignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of the device for the fixed flue of converter vaporization cooling provided by the present utility model;

[0014] Figure 2 It is a schematic structural diagram of the fixed flue in the device for the fixed flue of converter vaporization cooling provided by the present utility model;

[0015] Figure 3 It is a schematic structural diagram of the tail flue in the device for the fixed flue of converter vaporization cooling provided by the present utility model;

[0016] In the figure: 1. Charging bay crane; 2. Oxygen lance bay crane; 3. Fixed flue; 4. Movable flue; 5. Tail flue; 6. Chain block or electric hoist; 7. Hydraulic truck crane; 8. First upper section flue; 9. First middle section flue; 10. First lower section flue; 11. Second upper section flue; 12. Second middle section flue; 13. Second lower section flue. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] The purpose of the present utility model is to provide a device for the fixed flue of converter vaporization cooling, so as to solve the problems existing in the above-mentioned prior art, with a simple structure and effectively improve the safety of replacing the vaporization cooling flue.

[0019] In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Embodiment 1

[0021] This embodiment provides a device for the fixed flue 3 of converter vaporization cooling, as Figures 1 to 3 shown, including: a fixed flue 3, a tail flue 5, a fixed lifting tool and a movable lifting device. The fixed flue 3 includes a first lower-section flue 10, a first middle-section flue 9, a first upper-section flue 8 and a first connecting pipe. The first lower-section flue 10 is connected to the movable flue 4 through a flange. The first lower-section flue 10 is used for welding and fixing with the first middle-section flue. The first middle-section flue 9 is sleeved and fixed at the bottom of the first connecting pipe. The first upper-section flue 8 is sleeved and fixed at the top of the first connecting pipe. The tail flue 5 includes a second lower-section flue 13, a second middle-section flue 12, a second upper-section flue 11 and a second connecting pipe. The second lower-section flue 13 is used for welding and fixing with the second middle-section flue 12. The second middle-section flue is sleeved and fixed at the bottom of the second connecting pipe. The second upper-section flue 11 is sleeved and fixed at the top of the second connecting pipe. The top of the second upper-section flue 11 is used for fixing with the first upper-section flue 8 through a flange. The fixed lifting tool is arranged on the high bay of the converter and is used for hoisting the first lower-section flue 10, the first middle-section flue 9, the first upper-section flue 8 and the first connecting pipe to the designed position. The movable lifting device is used for hoisting the second lower-section flue 13, the second middle-section flue 12, the second upper-section flue 11 and the second connecting pipe to the designed position.

[0022] In a preferred solution of this embodiment, the fixed lifting tool includes a charging bay crane 1 and an oxygen lance bay crane 2, with a simple structure and a high safety factor.

[0023] In a preferred solution of this embodiment, the device for the fixed flue 3 of converter vaporization cooling further includes a plurality of platforms, and a chain block or an electric hoist 6 is arranged below the platforms.

[0024] In a preferred solution of this embodiment, the movable hoisting device is the ladle bay floor hydraulic truck crane 7, which has a simple structure and a high safety factor.

[0025] In a preferred solution of this embodiment, the lengths of the first connecting pipe and the second connecting pipe are 800 - 1000 mm (the specific dimensions are reserved according to actual needs), which are used to adjust the error between pipes after installation alignment.

[0026] Embodiment 2

[0027] This embodiment also provides a replacement method for using the device of the converter vaporization cooling fixed flue as described above, including the following steps:

[0028] Figure 2 During the manufacturing of the fixed flue 3, it is divided into three sections according to the drawing outer dimensions, namely the first upper flue 8, the first middle flue 9, and the first lower flue 10. Among them, the first upper flue 8 and the first middle flue 9 are installed, aligned, and fixed with the first connecting pipe in the middle, and the tube bundles of the first middle flue 9 and the first lower flue 10 are fixed by direct interface welding. The specific installation method:

[0029] Use the charging bay crane 1 to lift and transport the first upper pipe 8 to the oxygen lance bay, use the oxygen lance bay crane 2 to lift it to a certain height, and then use the chain block set under the platform to "relay" and transport it in reverse to the position of the first upper pipe 8 for temporary fixation;

[0030] Similarly, use the charging bay crane 1, the oxygen lance bay crane 2, and the chain block set under the platform to transport the first middle flue 9 in reverse to the designed position for temporary fixation;

[0031] Similarly, use the charging bay crane 1, the oxygen lance bay crane 2, and the chain block set under the platform to transport the first lower flue 10 in reverse to the designed position for temporary fixation;

[0032] Move the movable flue 4 back to its original position and adjust it to the involved elevation, and align, adjust, and temporarily fix the first lower flue 10 with the movable flue 4 using the lower flange;

[0033] Align the lower ends of the tube bundles of the first middle flue 9 with the tube bundles of the first lower flue 10 and adjust them, and weld each tube bundle interface;

[0034] Adjust the first upper flue 8 to the set elevation and align it, and weld and fix the first connecting pipe between the first upper flue 8 and the first middle flue 9 and the flat steel between the tube bundles.

[0035] Figure 3In the process of manufacturing the tail flue 5, it is divided into three sections according to the external dimensions of the drawing, namely the second upper flue 11, the second middle flue 12, and the second lower flue 13. The second upper flue 11 and the second middle flue 12 are installed, aligned, and fixed with a second connecting pipe in the middle, and the tube bundles of the second middle flue 12 and the second lower flue 13 are fixed by direct interface welding. The specific installation method is as follows:

[0036] Use the ground hydraulic truck crane 7 in the tapping bay to lift the second upper flue 11 to the platform, and then use the electric hoist 6 installed under the platform to "relay" and transport it to the design elevation of the second upper flue 11 and align and fix it with the flange of the first upper flue 8 for fixing the flue;

[0037] Similarly, use the ground hydraulic truck crane 7 in the tapping bay and the electric hoist 6 installed under the platform to transport the second lower flue 13 to the designed position and temporarily fix it;

[0038] Similarly, use the ground hydraulic truck crane 7 in the tapping bay and the electric hoist 6 installed under the platform to transport the second middle flue 12 to the expected position and temporarily fix it;

[0039] Align the lower openings of the tube bundles of the second middle flue 12 with the tube bundles of the second lower flue 13 and align them, and weld each tube bundle interface;

[0040] Weld and fix the flat steel between the second connecting pipe in the middle of the second upper flue 11 and the second middle flue 12 and the tube bundles.

[0041] In the present utility model, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A device for the fixed flue of the converter vaporization cooling, characterized in that: Comprising: A fixed flue, the fixed flue includes a first lower-section flue, a first middle-section flue, a first upper-section flue and a first connecting pipe. The first lower-section flue is connected to the movable flue through a flange. The first lower-section flue is used for welding and fixing with the first middle-section flue. The first middle-section flue is sleeved and fixed at the bottom of the first connecting pipe. The first upper-section flue is sleeved and fixed at the top of the first connecting pipe; A tail flue, the tail flue includes a second lower-section flue, a second middle-section flue, a second upper-section flue and a second connecting pipe. The second lower-section flue is used for welding and fixing with the second middle-section flue. The second middle-section flue is sleeved and fixed at the bottom of the second connecting pipe. The second upper-section flue is sleeved and fixed at the top of the second connecting pipe. The top of the second upper-section flue is used for fixing with the first upper-section flue through a flange; A fixed hoisting tool, the fixed hoisting tool is arranged on the high bay of the converter. The fixed hoisting tool is used for hoisting the first lower-section flue, the first middle-section flue, the first upper-section flue and the first connecting pipe to the designed position; and A movable hoisting device, the movable hoisting device is used for hoisting the second lower-section flue, the second middle-section flue, the second upper-section flue and the second connecting pipe to the designed position.

2. The device for the fixed flue of the converter vaporization cooling according to claim 1, characterized in that: The fixed hoisting tool includes a charging bay crane and an oxygen lance bay crane.

3. The device for the fixed flue of the converter vaporization cooling according to claim 2, wherein: It further includes a plurality of platforms, and a chain block or an electric hoist is arranged below the platforms.

4. The device for the fixed flue of the converter vaporization cooling according to claim 3, characterized in that: The movable hoisting device is a ladle bay ground hydraulic truck crane.

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