CAP1000 nuclear power bulk material installation method and CAP1000 nuclear power structure

Abstract

The application provides a CAP1000 nuclear power bulk material installation method and a CAP1000 nuclear power structure. The CAP1000 nuclear power bulk material installation method comprises the following steps: dividing a support structure used for installing bulk materials into multiple parts to form multiple support components; selecting a relative positioning point on each support component; converting the position of the bulk material corresponding to the support component relative to a theoretical coordinate system into a position relative to the relative positioning point, and installing the bulk material on the support component based on the relative positioning point to form an installation module; and assembling multiple installation modules. Through the combination of the relative positioning point and the theoretical coordinate system, the installation of the bulk material can be performed before the support is hoisted to the nuclear island, thereby advancing the installation of the bulk material and changing the construction logic of installing the bulk material after the civil structure, so that the construction progress can be greatly improved.

Description

Technical Field

[0001] This invention relates to the field of nuclear power plant construction technology, and more specifically, to a method for installing bulk materials for CAP1000 nuclear power plants and a CAP1000 nuclear power plant structure. Background Technology

[0002] Generally, in nuclear power projects, bulk materials can be divided into the following four categories: process piping materials (including pipes, fittings, supports, etc.), cables and accessories, instrumentation valves and fittings, and other materials. The quantity of bulk materials is huge, the specifications are numerous, and the installation process is complicated.

[0003] Currently, in the construction of bulk materials for CAP1000 nuclear power plants, the general construction logic is as follows: after the civil engineering or steel structure (support structure) installation is completed, bulk material installation begins, and the layout and positioning are carried out according to the nuclear island coordinate system. Then, the bulk materials are installed based on the layout and positioning results. The CAP1000 nuclear power project involves a large number of support structures. Generally, during construction, the support structures are first assembled at the assembly site, and then hoisted to the nuclear island after assembly. However, during this period, due to the construction logic and the absence of a nuclear island coordinate system, the installation of bulk materials cannot begin, affecting the construction progress. Furthermore, considering the cumulative tolerances between the theoretical coordinate system and the support structure, as well as the effects of hoisting deformation, the deviations of the installed bulk materials are difficult to control within the design requirements. Summary of the Invention

[0004] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0005] The purpose of this invention is to provide a method for installing bulk materials in CAP1000 nuclear power plants, which can improve the technical problems of time-consuming installation and slow construction progress of bulk materials in the prior art.

[0006] The present invention also aims to provide a CAP1000 nuclear power plant structure that can improve the technical problems of time-consuming installation of large quantities of materials and slow construction progress in the prior art.

[0007] Embodiments of the present invention can be implemented in the following ways:

[0008] A method for installing bulk materials in a CAP1000 nuclear power plant, wherein the bulk materials are supported by a bracket; the method for installing bulk materials in a CAP1000 nuclear power plant includes:

[0009] The support structure used to install the bulk materials is divided into multiple parts to form multiple support components;

[0010] Select a relative positioning point on each of the aforementioned support components;

[0011] The position of the bulk material corresponding to the support component relative to the theoretical coordinate system is converted to the position relative to the relative positioning point, and the bulk material is installed onto the support component with the relative positioning point as the reference to form an installation module.

[0012] The installation modules are assembled together.

[0013] Optionally, the step of assembling multiple installation modules includes:

[0014] Obtain the theoretical coordinate system for nuclear island construction;

[0015] The relative positioning point is located using the theoretical coordinate system as a reference.

[0016] Assemble multiple installation modules.

[0017] Optionally, the step of assembling multiple installation modules further includes:

[0018] The multiple installation modules are hoisted to the construction site for assembly.

[0019] Optionally, before the step of hoisting the multiple installation modules to the construction site for assembly, the CAP1000 nuclear power bulk material installation method further includes:

[0020] The stress calculation of the installation module is performed, and the position of the lifting point is determined by eccentric analysis.

[0021] Optionally, after assembling the multiple installation modules, the CAP1000 nuclear power bulk material installation method further includes:

[0022] Obtain the nuclear island coordinate system;

[0023] The location of the bulk materials is verified by checking the coordinate system of the nuclear island to confirm the accuracy of the installation location of the bulk materials.

[0024] Optionally, the assembly of the multiple installation modules can be carried out simultaneously during the civil construction process.

[0025] Optionally, the mounting module may further include structural components mounted on the bracket component.

[0026] A CAP1000 nuclear power plant structure, wherein bulk materials in the CAP1000 nuclear power plant structure are installed using the aforementioned CAP1000 nuclear power plant bulk material installation method.

[0027] The beneficial effects of the CAP1000 nuclear power bulk material installation method and CAP1000 nuclear power structure provided by the embodiments of the present invention include:

[0028] This invention provides a method for installing bulk materials in a CAP1000 nuclear power plant. The method includes dividing a support structure for installing bulk materials into multiple parts to form multiple support components; selecting relative positioning points on each support component; converting the position of the bulk material relative to the theoretical coordinate system relative to the relative positioning point, and installing the bulk material onto the support component using the relative positioning point as a reference to form an installation module; and assembling the multiple installation modules. By combining the relative positioning points with the theoretical coordinate system, the installation of bulk materials can be carried out before the support structure is hoisted to the nuclear island, thus advancing the installation of bulk materials and changing the construction logic of installing civil engineering structures first and then bulk materials, thereby significantly improving the construction progress.

[0029] The embodiments of the present invention also provide a CAP1000 nuclear power structure in which bulk materials are installed using the above-mentioned CAP1000 nuclear power bulk material installation method, thus having the beneficial effect of advancing the installation of bulk materials and greatly improving the construction progress. Attached Figure Description

[0030] The above-described features and advantages of the present invention will be better understood after reading the following detailed description of embodiments of the present disclosure in conjunction with the accompanying drawings. In the drawings, components are not necessarily drawn to scale, and components having similar related characteristics or features may have the same or similar reference numerals.

[0031] Figure 1 A step diagram of the CAP1000 nuclear power bulk material installation method according to one aspect of the present invention is shown;

[0032] Figure 2 A partial structural schematic diagram of the CAP1000 nuclear power plant structure provided according to one aspect of the present invention is shown;

[0033] Figure 3 A schematic diagram of the installation module provided according to one aspect of the present invention is shown.

[0034] 100-CAP1000 nuclear power plant structure; 110-Installation module; 111-Support component; 112-Bulk materials; 113-Relative positioning point; 120-Support structure. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0036] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," "outer," or "vertical" appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use, and does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0037] At the same time, it should be noted that the terms "first" and "second" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0038] In the description of this invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components, etc. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Figure 1 This is a step diagram illustrating the CAP1000 nuclear power bulk material installation method provided in this embodiment. Figure 2 This is a partial structural diagram of the CAP1000 nuclear power plant structure 100 provided in this embodiment. Figure 2 The bracket shown is formed by assembling multiple bracket components 111. Please refer to the reference. Figure 1 and Figure 2 This embodiment provides a method for installing bulk materials in a CAP1000 nuclear power plant, and also provides a CAP1000 nuclear power plant structure 100. The bulk materials 112 in the CAP1000 nuclear power plant structure 100 are installed using the CAP1000 nuclear power plant bulk material installation method.

[0040] Specifically, the CAP1000 nuclear power bulk material installation method provided in this embodiment includes the following steps:

[0041] S01: The support structure 120 used for installing bulk materials 112 is divided into multiple parts to form multiple support components 111.

[0042] Multiple support components 111 are multiple sub-components of the support structure 120. The complete support structure 120 can be formed by assembling multiple support components 111. The specific structure of the support structure 120 is described in... Figure 1 As shown in the figure. Specifically, the support component 111 can be multiple parts assembled from the existing support structure 120; or, before splicing, the components of the support structure 120 can be divided into multiple parts during the design process of the support structure 120 according to the installation requirements of the bulk materials 112, thereby obtaining a range of multiple support components 111, and then the specific components of each support component 111 can be designed, and finally multiple support components 111 that can exist independently of each other can be obtained by splicing.

[0043] Furthermore, in the process of dividing the support structure 120 into multiple parts, it is necessary to consider the installation requirements of the bulk materials 112 to ensure that each bulk material 112 can be pre-installed and fixed on the support component 111 after division. Moreover, the hoisting capacity of the construction site must also be considered during the division to ensure that each support component 111 can be hoisted individually.

[0044] Alternatively, the support component 111 can be configured as a combination of welded steel structures.

[0045] S02: Select a relative positioning point 113 on each bracket component 111.

[0046] Figure 3 A schematic diagram of the installation module 110 provided in this embodiment is shown. This module will be described later. Figure 3 The structural module shown includes a support component 111. Please refer to the reference. Figures 1-3 In this embodiment, the CAP1000 nuclear power bulk material installation method further includes selecting a relative positioning point 113 on each support component 111. The selection of the relative positioning point 113 can be based on the installation position of the support component 111 and the bulk materials 112 to be installed on it, ensuring that each bulk material 112 can be positioned and installed according to the relative positioning point 113.

[0047] Optionally, such as Figure 3 The position of a relative positioning point 113 on a bracket component 111 is shown. It can be understood that in some other embodiments, or for other bracket components 111, the position of the relative positioning point 113 may be set at other locations, or even at a location not on the surface of the bracket component 111.

[0048] S03: Convert the position of the bulk material 112 corresponding to the bracket component 111 relative to the theoretical coordinate system to the position relative to the relative positioning point 113, and install the bulk material 112 onto the bracket component 111 with the relative positioning point 113 as the reference to form the installation module 110.

[0049] The installation module 110 can be viewed as a structural module formed by installing bulk materials 112 onto the support component 111. During the design of the CAP1000 nuclear power plant structure 100, both the support structure 120 and the bulk materials 112 are positioned according to the theoretical coordinate system. Therefore, after executing step S02, the position of the relative positioning point 113 in the theoretical coordinate system is determined and unique. Given that the installation position of the bulk materials 112 in the theoretical coordinate system is determined, the position of the bulk materials 112 relative to the theoretical coordinate system can be converted into the position relative to the relative positioning point 113 on the support component 111 to be installed. Then, based on this position and using the relative positioning point 113 as a reference, the installation of the bulk materials 112 can be carried out. This ensures the installation requirements of the bulk materials 112 even when the nuclear island has not been completed and a nuclear island coordinate system does not exist, changing the construction logic of installing the civil engineering structure first and then the bulk materials 112.

[0050] Furthermore, if, in addition to the bulk material 112, other structural components need to be installed on the support structure 120 in the CAP1000 nuclear power structure 100, then during the assembly of the installation module 110, these structural components can be correspondingly installed onto the support component 111. In other words, in this embodiment, the installation module 110 also includes structural components installed on the support component 111.

[0051] S04: Assemble multiple installation modules 110.

[0052] After performing step S03, the obtained multiple installation modules 110 can be assembled.

[0053] Because the construction logic has been changed, the installation and positioning of bulk materials 112 does not depend on the nuclear island coordinate system during the execution of step S03. Therefore, the nuclear island civil construction and the operation of step S04 can be carried out simultaneously.

[0054] Specifically, the steps for assembling the multiple installation modules 110 include:

[0055] S41: Obtain the theoretical coordinate system for nuclear island construction.

[0056] Since the location of the nuclear island was also determined using a theoretical coordinate system during the design of the CAP1000 nuclear power structure 100, the nuclear island will be constructed according to the theoretical coordinate system during the civil engineering process. Therefore, when assembling the installation module 110, the location of the nuclear island based on the theoretical coordinate system can be obtained first.

[0057] S42: Position the relative positioning point 113 using the theoretical coordinate system as a reference.

[0058] After obtaining the theoretical coordinate system for nuclear island construction in step S41, the relative positioning point 113 can be positioned according to the theoretical coordinate system, thereby ensuring the accurate positioning of multiple installation modules 110.

[0059] Meanwhile, when positioning the relative positioning point 113 based on the theoretical coordinate system, the installation position of the bulk material 112 can also be compared and analyzed according to the theoretical coordinate system to reduce the installation error of the bulk material 112. This process can be performed after step S43 described later.

[0060] S43: Perform assembly of multiple installation modules 110.

[0061] Multiple installation modules 110 were hoisted to the construction site for assembly.

[0062] By setting the assembly of multiple installation modules 110 and the assembly of the multiple installation modules 110 themselves in different locations, the amount of welding work on the island can be reduced, the amount of work at height can be reduced, and thus the risk of working at height can be reduced.

[0063] Since the installation module 110 is transferred to the construction site for assembly by hoisting, the CAP1000 nuclear power bulk material installation method also includes, before executing step S43, performing stress calculations on the installation module 110 and determining the hoisting point positions through eccentric analysis. This facilitates the hoisting operation.

[0064] The step of performing the stress calculation on the installation module 110 can be performed before step S43, for example, after step S01.

[0065] Furthermore, after assembling multiple installation modules 110, the CAP1000 nuclear power bulk material installation method also includes:

[0066] Obtain the nuclear island coordinate system. Verify the location of bulk material 112 using the nuclear island coordinate system to confirm the accuracy of its installation position.

[0067] The CAP1000 nuclear power bulk material installation method and CAP1000 nuclear power structure 100 provided by the embodiments of the present invention enable the installation of bulk materials 112 at the assembly site. Through modular design, the installation of bulk materials 112 and civil construction can be carried out in parallel, so that the actual deviation generated during the installation of bulk materials 112 is controlled within the design range, realizing the modular installation of bulk materials 112, effectively shortening the construction period and improving economic efficiency.

[0068] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for installing bulk materials in a CAP1000 nuclear power plant, wherein the bulk materials are supported by a bracket; characterized in that, The CAP1000 nuclear power bulk material installation method includes: The support structure for installing the bulk materials is divided into multiple parts to form multiple support components. In the process of forming multiple support components, the installation requirements of the bulk materials and the hoisting capacity of the construction site are taken into account to ensure that each bulk material can be pre-installed and fixed on the support component after division, and to ensure that each support component can be hoisted individually. Select a relative positioning point on each of the aforementioned support components; The position of the bulk material corresponding to the support component relative to the theoretical coordinate system is converted to the position relative to the relative positioning point, and the bulk material is installed onto the support component with the relative positioning point as the reference to form an installation module. Multiple installation modules are assembled; wherein the step of assembling multiple installation modules is performed simultaneously with the step of forming the installation module; The steps of assembling multiple installation modules include: Obtain the theoretical coordinate system for nuclear island construction; The relative positioning points are located using the theoretical coordinate system as a reference; wherein, the installation positions of the bulk materials are compared and analyzed based on the theoretical coordinate system. The assembly of multiple installation modules is carried out; wherein the assembly of multiple installation modules and the assembly of the multiple installation modules themselves are carried out in different locations; Following the step of assembling multiple installation modules, the CAP1000 nuclear power bulk material installation method further includes: Obtain the nuclear island coordinate system; The location of the bulk materials is verified by checking the coordinate system of the nuclear island to confirm the accuracy of the installation location of the bulk materials; The step of assembling multiple installation modules further includes: The multiple installation modules are hoisted to the construction site for assembly. Before the step of hoisting the multiple installation modules to the construction site for assembly, the CAP1000 nuclear power bulk material installation method further includes: The stress calculation of the installation module is performed, and the position of the lifting point is determined by eccentric analysis.

2. The CAP1000 nuclear power bulk material installation method according to claim 1, characterized in that, The assembly of the multiple installation modules is carried out simultaneously during the civil construction process.

3. The CAP1000 nuclear power bulk material installation method according to claim 1, characterized in that, The installation module also includes structural components mounted on the bracket component.

4. A CAP1000 nuclear power plant structure, characterized in that, The bulk materials in the CAP1000 nuclear power plant structure are installed using the CAP1000 nuclear power plant bulk material installation method as described in any one of claims 1-3.

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