Modular installation and construction method for CAP1000 annular air pipe

Abstract

The invention discloses a modular installation construction method for a CAP1000 annular air duct, which comprises the following steps: S1, construction preparation: determining the installation position of a bracket and the number of air ducts, and determining whether the bracket is conflicted with a hoisting hook and other installation items; s2, air pipe prefabrication; s3, air pipe assembly, wherein the multiple air pipes are assembled into a combined air pipe according to the field installation position; s4, reserving an actual measurement section of the combined air pipe; s5, hoisting the steel containment and the combined air pipe in place, and installing a temporary support at the hoisting point position of the combined air pipe in the hoisting process; and S6, actually-measured section installation: after the combined air pipe and the steel containment are hoisted, the reserved actually-measured sections are actually measured on site and then prefabricated and installed into a whole, and finally the installation process is completed. The air pipe is prefabricated in advance, the welding amount of a construction platform can be reduced, the turning frequency is reduced, installation is carried out on an assembling site, the high-altitude operation risk can be reduced, the working efficiency can be improved, and more time can be saved compared with on-site installation.

Description

Technical Field

[0001] The invention relates to the technical field of building construction and installation, and in particular to a modular installation and construction method for a CAP1000 annular air duct. Background Art

[0002] Currently, the annular air ducts are installed section by section on site. Before installation, scaffolding needs to be set up to provide a construction platform. The annular air ducts and brackets are heavy and need to be hoisted into place through a ring crane. The overall installation period is long, the operation height difference is large, and the construction risk is high. Summary of the invention

[0003] The purpose of the present invention is to provide a modular installation and construction method of a CAP1000 annular air duct, so as to solve the above-mentioned technical problems.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A modular installation and construction method for a CAP1000 annular air duct, comprising:

[0006] S1. Construction preparation: determine the bracket installation position and the number of air ducts, and confirm whether there is a conflict with the lifting hook and other installation items;

[0007] S2, air duct prefabrication;

[0008] S3, assembling air ducts, assembling several air ducts into a combined air duct according to the on-site installation location;

[0009] S4, reserved for the measured section of the combined air duct;

[0010] S5. The steel containment and combined air duct are hoisted into place. During the hoisting process, temporary supports need to be installed at the hoisting points of the combined air duct;

[0011] S6, installation of the measured section. After hoisting the combined air duct and the steel containment, the reserved measured section is measured on site and then prefabricated and installed as a whole to complete the installation process.

[0012] Preferably, during the construction preparation stage, it is necessary to carry out positioning and laying out at the assembly site, and use BIM modeling to identify in advance whether the combined air ducts and brackets conflict with the steel containment, lifting hooks and other installation items. If there is a conflict, it needs to be corrected in time.

[0013] Preferably, during the prefabrication process of the air duct, the materials need to be cut according to the design drawings and conversion drawings.

[0014] As a further preference, the air duct is made of a stainless steel plate with a thickness of 1.5 mm to 2.5 mm.

[0015] Preferably, in S4, four combined air duct measuring sections are provided to prevent relative displacement of the steel containment shell and the combined air duct during transportation.

[0016] Preferably, in S4, before transporting the steel containment shell and the combined air duct, it is necessary to perform a stress analysis on the combined air duct, and observe whether there is relative displacement between the steel containment shell and the combined air duct during transportation.

[0017] Preferably, the temporary support is arranged in a U-shape or an L-shape.

[0018] Preferably, before installing the measured section, the air duct of the measured section needs to be measured on site and prefabricated and installed according to the final positioning condition.

[0019] The above technical solution has the following advantages or beneficial effects:

[0020] The installation and construction method of the present invention can be applied to the hoisting of annular air ducts and steel containment modules. By prefabricating the air ducts in advance, the amount of welding on the construction platform can be reduced, and the number of transfers can be reduced. The installation can be carried out at the assembly site, which can reduce the risk of high-altitude operations and improve work efficiency. Compared with on-site installation, it can save more time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a flow chart of the modular installation and construction method of the CAP1000 annular air duct in the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the CAP1000 annular air duct in the present invention.

[0023] In the figure: 1. Combined air duct; 2. Steel containment shell; 3. Bracket. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments 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.

[0025] In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Figure 1 It is a flow chart of the modular installation and construction method of the CAP1000 annular air duct in the present invention; Figure 2 This is a schematic diagram of the CAP1000 annular air duct structure in the present invention; see Figure 1 to Figure 2 As shown, a preferred embodiment is shown, which shows a modular installation and construction method of a CAP1000 annular air duct, including:

[0028] S1. Construction preparation: determine the installation position of bracket 3 and the number of air ducts, and confirm whether there is a conflict with the lifting hook and other installation items;

[0029] S2, air duct prefabrication;

[0030] S3, assembling air ducts, assembling several air ducts into a combined air duct 1 according to the on-site installation positions;

[0031] S4, the measured section of combined air duct 1 is reserved;

[0032] S5. The steel containment 2 and the combined air duct 1 are hoisted into place. During the hoisting process, temporary supports need to be installed at the hoisting points of the combined air duct 1.

[0033] S6, installation of the measured section, after hoisting the combined air duct 1 and the steel containment shell 2, the reserved measured section is prefabricated and installed as a whole after on-site measurement, and the installation process is finally completed. The construction of the annular air duct in this embodiment is mainly composed of two parts: in-depth prefabrication in the workshop and modular installation of the steel containment shell 2. During construction preparation, it is necessary to locate and lay out the lines at the assembly site, and use BIM modeling to identify in advance whether the combined air duct 1 and the bracket 3 conflict with the steel containment shell 2, the hoisting hook and other installation items. If there is a conflict, it needs to be corrected in time, which can avoid repeated rework, effectively improve work efficiency, and save costs.

[0034] Furthermore, as a preferred implementation, during the prefabrication of the air duct, it is necessary to cut the material according to the design drawings and the conversion drawings. The air duct in this embodiment is made of a stainless steel plate with a thickness of 1.5 mm to 2.5 mm. Since the air duct is easily deformed during the hoisting and transportation process, in this embodiment, it is necessary to install temporary supports at the hoisting points for reinforcement to prevent deformation. The temporary supports can be set in a U-shape or L-shape.

[0035] Further, as a preferred implementation, in S4, four measuring sections of the combined air duct 1 are provided to prevent the relative displacement of the steel containment shell 2 and the combined air duct 1 during transportation. In this embodiment, the measuring sections provided can ensure the release of stress during transportation of the combined air duct 1, and the measuring sections are established on the basis of finite element analysis. The setting of the measuring sections can also avoid relative movement between the air ducts, and can avoid damage caused by mutual squeezing of the air ducts. In this embodiment, the number of measuring sections can be set as needed.

[0036] Further, as a preferred implementation, in S4, before transporting the steel containment shell 2 and the combined air duct 1, it is necessary to perform a force analysis on the combined air duct 1, and observe whether there is any relative displacement between the steel containment shell 2 and the combined air duct 1 during transportation.

[0037] Furthermore, as a preferred implementation, before the measured section is installed, it is necessary to prefabricate and install the measured section air duct after on-site measurement based on the final placement conditions, and the installation can be completed if the requirements are met.

[0038] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A modular installation and construction method for a CAP1000 annular air duct, characterized in that: include: S1. Construction preparation: determine the bracket installation position and the number of air ducts, and confirm whether there is a conflict with the lifting hook and other installation items; S2, air duct prefabrication; S3, assembling air ducts, assembling several air ducts into combined air ducts according to the site, transport vehicle and on-site installation location; S4, reserved for the measured section of the combined air duct; S5. The steel containment and combined air duct are hoisted into place. During the hoisting process, temporary supports need to be installed at the hoisting points of the combined air duct; S6, installation of the measured section. After hoisting the combined air duct and the steel containment, the reserved measured section is measured on site and then prefabricated and installed as a whole to complete the installation process.

2. The modular installation and construction method of the CAP1000 annular air duct according to claim 1, characterized in that: During the construction preparation stage, it is necessary to carry out positioning and laying out at the assembly site, and use BIM modeling to identify in advance whether the combined air ducts and brackets conflict with the steel containment, lifting hooks and other installation items. If there is a conflict, it needs to be corrected in time.

3. The modular installation and construction method of the CAP1000 annular air duct according to claim 1, characterized in that: During the duct prefabrication process, it is necessary to cut materials according to the design drawings and conversion drawings.

4. The modular installation and construction method of the CAP1000 annular air duct according to claim 3 is characterized in that: The air duct is made of stainless steel plate with a thickness of 1.5mm to 2.5mm.

5. The modular installation and construction method of the CAP1000 annular air duct according to claim 1, characterized in that: In S4, four combined air duct measuring sections are provided to prevent relative displacement of the steel containment and the combined air duct during transportation.

6. The modular installation and construction method of the CAP1000 annular air duct according to claim 1, characterized in that: In S4, before transporting the steel containment shell and the combined air duct, it is necessary to perform a stress analysis on the combined air duct, and observe whether there is relative displacement between the steel containment shell and the combined air duct during transportation.

7. The modular installation and construction method of the CAP1000 annular air duct according to claim 1, characterized in that: The temporary support is arranged in a U-shape or an L-shape.

8. The modular installation and construction method of the CAP1000 annular air duct according to claim 1, characterized in that: Before installing the measured section, it is necessary to prefabricate and install the measured section air duct after on-site measurement based on the final placement situation.

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