Modular mounting method for side wall structure of furnace body of large heating furnace

Abstract

A modular installation method for a side wall structure of a furnace body of a large heating furnace comprises the following steps that each side wall body of a furnace wall is divided into a soaking section module, a heating section module and a preheating section module, and preprocessing is carried out; determining a mounting position in a construction site; and mounting the soaking section module, the heating section module and the preheating section module at the mounting positions. According to the modular mounting method for the side wall structure of the large heating furnace body, the furnace wall structure of the heating furnace is prefabricated into a plurality of sections offline in advance, so that the furnace wall structure module can be quickly mounted, a large amount of hoisting operation is avoided, field high-place operation is greatly reduced, the safety risk is reduced, and the space of a heating furnace production area is not occupied; the furnace wall module can be manufactured in advance before production stopping, and then the production stopping time of the heating furnace is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical engineering, and in particular to a modular installation method for a side wall structure of a large heating furnace. Background Art

[0002] The length of the heating furnace wall shell can generally reach 40 to 50 meters, and the installation process is generally from front to back and from bottom to top. The conventional construction method is to first erect the columns, then connect the cross braces, and finally lay the furnace wall panels and assemble them on site. In order to make the project links closely linked, welding, assembly, hoisting and other operations often need to be carried out at the same time. The workload of on-site assembly is large. Therefore, when installing and welding the furnace wall shell, the efficiency will inevitably be reduced and the installation period will be extended. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a modular installation method for the side wall structure of a large heating furnace, which can quickly install the furnace wall structure modules, avoid a large number of lifting operations, and greatly reduce on-site high-altitude operations, reduce safety risks, and do not occupy space in the heating furnace production area. The furnace wall modules can be manufactured in advance before production is stopped, thereby shortening the shutdown time of the heating furnace.

[0004] The present invention provides a modular installation method for a side wall structure of a large heating furnace, comprising the following steps: Each side of the furnace wall is divided into a soaking section module, a heating section module and a preheating section module, and pre-processed; Determine the installation location at the construction site; The soaking section module, the heating section module and the preheating section module are installed at the installation position.

[0005] In one embodiment, the step of dividing each side wall of the furnace body into a soaking section module, a heating section module and a preheating section module, and performing pre-processing further includes: According to the different areas corresponding to the furnace wall, each side wall is divided into a soaking section module, a heating section module and a preheating section module, wherein the heating section module includes a heating section 1 and a heating section 2; According to the shapes, the modules are welded through columns, cross braces and furnace wall steel plates to form the soaking section module, heating section module and preheating section module.

[0006] In one embodiment, determining the installation location at the construction site further includes: Conduct measurements at the construction site and determine the installation locations; Embedded parts are embedded in the corresponding installation points.

[0007] In one embodiment, the installation of the soaking section module, the heating section module and the preheating section module at the installation position further includes: Transfer the soaking section module, the heating section module and the preheating section module to the preset positions respectively; Install the soaking section module, the heating section module and the preheating section module in sequence according to their positions to form a wall on one side, and install diagonal braces to support the wall; The walls on the remaining sides are installed according to the formed wall on one side.

[0008] In one embodiment, the installation method further comprises: Install the furnace top beam on the wall to connect the walls; The diagonal braces supporting the wall are removed.

[0009] The modular installation method of the side wall structure of a large heating furnace provided by the present invention prefabricates the furnace wall structure of the heating furnace into several sections offline in advance, and the furnace wall structure modules can be quickly installed, thus avoiding a large number of hoisting operations and greatly reducing on-site high-altitude operations, thereby reducing safety risks and not occupying space in the production area of ​​the heating furnace. The furnace wall modules can be manufactured in advance before production is stopped, thereby shortening the shutdown time of the heating furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 A schematic diagram of the modular structure of a furnace wall of a large heating furnace provided by the present invention for the modular installation method of the furnace body side wall structure.

[0012] Figure 2 A structural schematic diagram of a soaking section module of a modular installation method for a side wall structure of a large heating furnace provided by the present invention. DETAILED DESCRIPTION

[0013] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0015] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0016] The terms "first", "second", "third", etc. are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0017] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0018] See also Figure 1 and Figure 2 The modular installation method of the side wall structure of a large heating furnace provided by the present invention comprises the following steps: S1, divide each side wall of the furnace wall into a soaking section module, a heating section module and a preheating section module, and perform pre-processing.

[0019] It is understandable that the above steps may further include: S101, dividing each side wall into a soaking section module, a heating section module and a preheating section module according to different areas corresponding to the furnace wall, wherein the heating section module includes a first heating section and a second heating section.

[0020] It is understandable that the heating furnace formed by the furnace wall has different areas. According to the positions of the furnace wall corresponding to each area, the furnace wall is divided into a soaking section module, a heating section module and a preheating section module. Numbers can also be marked on the soaking section module, the heating section module and the preheating section module as serial numbers. Please refer to Figure 1, the soaking section module (①-⑧ in the figure are columns), the length is 10.525 meters and the height is 4.29 meters. The columns can be H-shaped steel (250×175), the spacing between the columns is 1500mm, and the cross braces are welded to the columns. The furnace wall steel plate is 6mm thick and welded to the columns and cross braces; the second section is the second heating section (9-15 columns in the figure), the length is 9.9 meters and the height is 4.74 meters. The third section is the first heating section (16-23 columns), the length is 12 meters and the height is 4.74 meters. The fourth section is the preheating section module (24-30), the length is 10.835 meters and the height is 3.94 meters.

[0021] S102, according to the shapes, the columns, cross braces and furnace wall steel plates are welded to form a soaking section module, a heating section module and a preheating section module.

[0022] It is understandable that the structural frame of the columns and cross braces of each section is welded with the furnace wall steel plate on the inside of the frame. The anchor hook sleeves of the furnace wall steel plate and various instrument detection holes and burner installation holes are welded and reserved together. In order to reduce the amount of high-altitude work on the job site and ensure the quality of structural welding and installation, the processing and welding are carried out in accordance with the drawings and the divided module sizes in the processing plant. The furnace wall structure on both sides is divided into 4 sections on each side, with a total of 8 modules. After splicing, welding and painting in the processing plant, mark them well. When splicing and welding, pay attention to symmetrical and uniform welding to prevent deformation of the bottom furnace wall steel plate.

[0023] S2, determine the installation location at the construction site.

[0024] It is understandable that the above steps may further include: S201, measure at the construction site and determine the installation points.

[0025] It is understandable that the construction site is the location of the furnace bottom ring beam.

[0026] S202, embedding embedded parts at corresponding installation points.

[0027] It can be known that, during subsequent installation, the embedded parts can be bolt holes provided on the furnace bottom ring beam.

[0028] S3, installing the soaking section module, the heating section module and the preheating section module at the installation position.

[0029] It is understandable that the above steps may further include: S301, transport the soaking section module, the heating section module and the preheating section module to the preset positions respectively.

[0030] It can be known that after each section is brought into the site, its appearance is checked to see if it is intact. According to the installation number, the corresponding section is transported to the installation site using a flatbed truck.

[0031] S302, installing the soaking section module, the heating section module and the preheating section module in sequence according to their positions to form a wall on one side, and installing diagonal braces to support the wall.

[0032] It can be understood that after the installation of the soaking section module, the heating section module and the preheating section module, a side wall, namely the furnace wall module, is formed, and the installation sequence can be performed according to the marked information.

[0033] S303, installing the walls on the remaining sides according to the formed wall on one side.

[0034] It is understandable that after one side of the furnace wall module is in place, the position and verticality are adjusted, and after being fixed with a temporary diagonal brace, the furnace wall module at the corresponding position on the other side is installed in the same way.

[0035] S4, installing the furnace top beam on the wall to connect the walls; Remove the diagonal braces supporting the wall.

[0036] From the above description, it can be known that the modular installation method of the side wall structure of the furnace body of a large heating furnace provided by the present invention prefabricates the furnace wall structure of the heating furnace into several sections offline in advance, and can quickly install the furnace wall structure modules, thus avoiding a large number of hoisting operations and greatly reducing on-site high-altitude operations, thereby reducing safety risks and not occupying space in the production area of ​​the heating furnace. The furnace wall modules can be manufactured in advance before production is stopped, thereby shortening the shutdown time of the heating furnace.

[0037] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A modular installation method for the side wall structure of a large heating furnace, characterized in that: The steps include: Each side of the furnace wall is divided into a soaking section module, a heating section module and a preheating section module, and pre-processed; Determine the installation location at the construction site; The soaking section module, the heating section module and the preheating section module are installed at the installation position.

2. The modular installation method of the side wall structure of a large heating furnace according to claim 1, characterized in that: The step of dividing each side wall of the furnace body into a soaking section module, a heating section module and a preheating section module, and performing pre-processing further includes: According to the different areas corresponding to the furnace wall, each side wall is divided into a soaking section module, a heating section module and a preheating section module, wherein the heating section module includes a heating section 1 and a heating section 2; According to the shapes, the modules are welded through columns, cross braces and furnace wall steel plates to form the soaking section module, heating section module and preheating section module.

3. The modular installation method of the side wall structure of a large heating furnace as claimed in claim 2, characterized in that: Determining the installation location at the construction site further includes: Conduct measurements at the construction site and determine the installation locations; Embedded parts are embedded in the corresponding installation points.

4. The modular installation method of the side wall structure of a large heating furnace as claimed in claim 3, characterized in that: The installation of the soaking section module, the heating section module and the preheating section module at the installation position further includes: Transfer the soaking section module, the heating section module and the preheating section module to the preset positions respectively; Install the soaking section module, the heating section module and the preheating section module in sequence according to their positions to form a wall on one side, and install diagonal braces to support the wall; The walls on the remaining sides are installed according to the formed wall on one side.

5. The modular installation method of the side wall structure of a large heating furnace as claimed in claim 4, characterized in that: The installation method further comprises: Install the furnace top beam on the wall to connect the walls; The diagonal braces supporting the wall are removed.

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