阅读说明：本技术 一种大型顶底复吹转炉防护装置模块化安装方法 (Modular installation method for protective device of large top-bottom combined blown converter ) 是由 孔炯 朱红刚 钱洁玲 施光涛 陈志� 郭建华 杨静 郑治飞 张俊 于 2019-11-20 设计创作，主要内容包括：本发明公开了一种大型顶底复吹转炉防护装置模块化安装方法,涉及建筑施工技术领域。该大型顶底复吹转炉防护装置模块化安装方法,包括如下步骤：S1、进行准备工作：组装转炉防护装置,并将其坐落与炉前平台钢结构上,同时搭设一组装支架,为型钢制成,高1m,以保证铸铁板的螺栓安装,S2、将倾动侧防护装置划分为倾动侧防护装置Ⅰ、倾动侧防护装置Ⅱ以及倾动侧防护装置连接部分,在已设置好的组装支架上。该大型顶底复吹转炉防护装置模块化安装方法,利用转炉炉前平台的平整场地,并制作组装胎膜,将其支架、横撑、铸铁板等按照合理分区组装在一起,再利用汽车吊和卷扬滑轮接力吊装就位以提高安装质量和安装效率,减少了安装的安全风险。(The invention discloses a modular installation method of a protective device of a large top-bottom combined blown converter, and relates to the technical field of building construction. The modular installation method of the protective device of the large top-bottom combined blown converter comprises the following steps: s1, preparation: assembling the protective device of the converter, placing the protective device on a steel structure of a platform in front of the converter, simultaneously erecting an assembling support which is made of section steel and is 1m high to ensure the bolt installation of a cast iron plate, and S2 dividing the tilting side protective device into a tilting side protective device I, a tilting side protective device II and a connecting part of the tilting side protective device on the assembled support. According to the modular installation method of the large top-bottom combined blown converter protection device, a flat field of a converter front platform is utilized, an assembly tire membrane is manufactured, a support, a cross brace, a cast iron plate and the like are assembled together according to reasonable partitions, and then an automobile crane and a winch pulley are used for hoisting in place in a relay manner to improve the installation quality and the installation efficiency, and the installation safety risk is reduced.)

1. A modular installation method for a protective device of a large top-bottom combined blown converter is characterized by comprising the following steps: the method comprises the following steps:

s1, preparation: assembling a converter protection device, placing the converter protection device on a steel structure of a platform in front of the converter, and simultaneously erecting an assembling support which is made of section steel and is 1m high so as to ensure the bolt installation of a cast iron plate;

s2, dividing the tilting side protection device into a tilting side protection device I, a tilting side protection device II and a tilting side protection device connecting part, respectively placing stand columns on the set assembly support, controlling the distance, firstly installing transverse supports, fixing by spot welding, then pulling and setting diagonal bracing sizes, and formally welding after all control is finished, wherein the sequence of a welding machine is from the middle to the periphery, and hanging cast iron plates after all welding is finished;

s3, hoisting of the tilting side protection device: after the assembly and welding of the tilting side protection device I are finished, the tilting side protection device I is hoisted by utilizing an automobile crane standing on a platform of 11.25m, slowly enters the side surface of the converter, and is hoisted in place by utilizing a hoisting pulley block arranged below the platform of 27.3m in a relay manner, the tilting side protection device I is fixedly welded on a steel structure platform in front of the converter, then the tilting side protection device II is hoisted by utilizing the same method, after the hoisting of the two components is finished, the connecting part of the tilting side protection device is installed, so that the tilting side protection device I and the tilting side protection device II form a whole, and a vacant part of the cast iron plate is filled;

s4, mounting a non-tilting side protection device and a furnace rear protection device;

s5, mounting a furnace front protection device: the furnace front protection device is located on the track of the furnace front steel structure platform, the alignment is completed, the fixing is firm, the trolley on the lower portion of the furnace front protection device is hoisted to the track of the furnace front protection device, the ground assembly is carried out on the upper portion of the furnace front protection device, and the trolley is divided into two pieces to be integrally transported to the trolley on the lower portion of the furnace front protection device.

2. The modular installation method of the protective device of the large-scale top-bottom combined blown converter according to claim 1, characterized in that: in step S1, the converter protection devices are divided into tilting side protection devices, non-tilting side protection devices, stokehole protection devices, and stokehole protection device parts, and are assembled according to regions.

3. The modular installation method of the protective device of the large-scale top-bottom combined blown converter according to claim 1, characterized in that: in step S1, before the installation of the converter protection device, the steel structure of the platform in front of the converter needs to be retested to confirm whether the size and welding work of the converter protection device are completed, and the installation of the converter protection device needs to be performed after the installation of the converter body is completed.

Technical Field

The invention relates to the technical field of building construction, in particular to a modular installation method of a protective device of a large top-bottom combined blown converter.

Background

With the rapid development of economy and the guidance of the policy of the country encouraging the elimination of post-production capacity, the metallurgical industry faces the updating of production processes and equipment, and needs to build or expand steelmaking system equipment correspondingly to increase the capacity and ensure the quality, converter equipment is the most popular and universal steelmaking main equipment and is directly related to the yield and the quality of molten steel in a steel mill.

The oxygen converter steelmaking is a steelmaking method in which molten iron and a small amount of scrap steel are used as raw materials, a flux (active limestone, fluorite, dolomite, etc.) and an iron alloy are added, and oxygen is blown in a converter. In the process of steel making, because the temperature of molten steel is high, the influence on the surrounding structural strength is large, and accidents are easily caused by a large amount of generated smoke, slag splashing and the like, a totally-enclosed structure is necessary to be designed around the converter body to seal the converter so as to intensively discharge smoke and prevent various accidents caused by high-temperature molten steel. The structure is called a converter protection device, and has the functions of ensuring that the main structure and the structure are not damaged and deformed under the direct contact of high-temperature flue gas and splashed high-temperature slag and steel, protecting operators and equipment, and collecting the converter flue gas.

Converter protector surrounds the converter and just can carry out follow-up installation after the converter body installation finishes, because the influence of converter body, though converter protector has the driving above its when installation but most region can't directly hoist and mount in place, and steel structural component is many, and the mounted position is narrow and small, and the operation degree of difficulty is big and work efficiency is low, appears the hoist and mount accident easily.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a modular installation method of a large top-bottom combined blown converter protection device, which solves the problems that although a travelling crane is arranged above the converter protection device during installation, most areas cannot be directly hoisted in place, a plurality of steel structure components are arranged, the installation position is narrow, the operation difficulty is high, the working efficiency is low, and hoisting accidents are easy to occur.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a modular installation method for a protective device of a large top-bottom combined blown converter comprises the following steps:

s1, preparation: assembling a converter protection device, placing the converter protection device on a steel structure of a platform in front of the converter, and simultaneously erecting an assembling support which is made of section steel and is 1m high so as to ensure the bolt installation of a cast iron plate;

s2, dividing the tilting side protection device into a tilting side protection device I, a tilting side protection device II and a tilting side protection device connecting part, respectively placing stand columns on the set assembly support, controlling the distance, firstly installing transverse supports, fixing by spot welding, then pulling and setting diagonal bracing sizes, and formally welding after all control is finished, wherein the sequence of a welding machine is from the middle to the periphery, and hanging cast iron plates after all welding is finished;

s3, hoisting of the tilting side protection device: after the assembly and welding of the tilting side protection device I are finished, the tilting side protection device I is hoisted by utilizing an automobile crane standing on a platform of 11.25m, slowly enters the side surface of the converter, and is hoisted in place by utilizing a hoisting pulley block arranged below the platform of 27.3m in a relay manner, the tilting side protection device I is fixedly welded on a steel structure platform in front of the converter, then the tilting side protection device II is hoisted by utilizing the same method, after the hoisting of the two components is finished, the connecting part of the tilting side protection device is installed, so that the tilting side protection device I and the tilting side protection device II form a whole, and a vacant part of the cast iron plate is filled;

s4, mounting a non-tilting side protection device and a furnace rear protection device;

s5, mounting a furnace front protection device: the furnace front protection device is located on the track of the furnace front steel structure platform, the alignment is completed, the fixing is firm, the trolley on the lower portion of the furnace front protection device is hoisted to the track of the furnace front protection device, the ground assembly is carried out on the upper portion of the furnace front protection device, and the trolley is divided into two pieces to be integrally transported to the trolley on the lower portion of the furnace front protection device.

Preferably, in step S1, the converter protection device is divided into a tilting side protection device, a non-tilting side protection device, a stokehole protection device and a stokehole protection device, and is performed according to regions during assembly.

Preferably, in step S1, before the installation of the converter protection device, the steel structure of the platform in front of the converter needs to be retested to confirm whether the size and welding work of the converter protection device are completed, and the installation of the converter protection device needs to be performed after the installation of the converter body is completed.

(III) advantageous effects

The invention provides a modular installation method of a protective device of a large top-bottom combined blown converter. The method has the following beneficial effects: according to the modular installation method of the large top-bottom combined blown converter protection device, a flat field of a converter front platform is utilized, an assembly tire membrane is manufactured, a support, a cross brace, a cast iron plate and the like are assembled together according to reasonable partitions, and then an automobile crane and a winch pulley are used for hoisting in place in a relay manner to improve the installation quality and the installation efficiency, and the installation safety risk is reduced.

Drawings

FIG. 1 is a schematic plan view of a converter protection device according to the present invention.

FIG. 2 is a layout view of a tilting-side converter protection device according to the present invention.

Fig. 3 is an assembly view of the tilting side protection device i according to the present invention.

Fig. 4 is a schematic view of a method for installing the tilting side protection device i according to the present invention.

Fig. 5 is a schematic view of the installation of the stokehole protection device 1.

Fig. 6 is a schematic view of the installation of the stokehole protection device according to the present invention 2.

In the figure: 1. a converter; 2. a tilt side guard; 3. a non-tilting side guard; 4. a stokehole guard; 5. a furnace rear protection device; 6. a furnace front steel structure platform; 7. a converter tilting side trunnion; 8. a tilting side protection device I; 9. a tilting side protection device II; 10. a tilt side guard attachment portion; 11. a column; 12. bracing; 13. transversely supporting; 14. a cast iron plate; 15. assembling a bracket; 16. a truck crane; 17. a hoisting pulley block; 18. a land-furnace front protection device; 19. a stokehole guard rail; 20. a trolley at the lower part of the stokehole protection device; 21. the upper part of the furnace front protection device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a modular installation method for a protective device of a large top-bottom combined blown converter comprises the following steps:

s1, preparation: assembling a converter protection device, placing the converter protection device on a steel structure of a converter front platform, simultaneously erecting an assembling support which is made of section steel and is 1m high to ensure the bolt installation of a cast iron plate, wherein the converter protection device is divided into a tilting side protection device, a non-tilting side protection device, a converter front protection device and a converter rear protection device, the assembling is carried out according to regions during the assembling, the converter protection device needs to retest the steel structure of the converter front platform before being arranged, and the installation condition of the converter protection device is met, and the arrangement of the converter protection device needs to be carried out after the converter body is completely installed;

s2, dividing the tilting side protection device into a tilting side protection device I, a tilting side protection device II and a tilting side protection device connecting part, respectively placing stand columns on the set assembly support, controlling the distance, firstly installing transverse supports, fixing by spot welding, then pulling and setting diagonal bracing sizes, and formally welding after all control is finished, wherein the sequence of a welding machine is from the middle to the periphery, and hanging cast iron plates after all welding is finished;

s3, hoisting of the tilting side protection device: after the assembly and welding of the tilting side protection device I are finished, the tilting side protection device I is hoisted by utilizing an automobile crane standing on a platform of 11.25m, slowly enters the side surface of the converter, and is hoisted in place by utilizing a hoisting pulley block arranged below the platform of 27.3m in a relay manner, the tilting side protection device I is fixedly welded on a steel structure platform in front of the converter, then the tilting side protection device II is hoisted by utilizing the same method, after the hoisting of the two components is finished, the connecting part of the tilting side protection device is installed, so that the tilting side protection device I and the tilting side protection device II form a whole, and a vacant part of the cast iron plate is filled;

s4, mounting a non-tilting side protection device and a furnace rear protection device;

s5, mounting a furnace front protection device: the furnace front protection device is located on the track of the furnace front steel structure platform, the alignment is completed, the fixing is firm, the trolley on the lower portion of the furnace front protection device is hoisted to the track of the furnace front protection device, the ground assembly is carried out on the upper portion of the furnace front protection device, and the trolley is divided into two pieces to be integrally transported to the trolley on the lower portion of the furnace front protection device.

In summary, the modular installation method of the large top-bottom combined blown converter protection device utilizes the flat field of the converter front platform, manufactures the assembled tire membranes, assembles the supports, the cross braces, the cast iron plates and the like together according to reasonable partitions, and then uses the truck crane and the hoisting pulley to hoist in place in a relay manner so as to improve the installation quality and the installation efficiency and reduce the safety risk of installation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.