High-temperature gas cooled reactor core supporting structure integrated installation system and installation method

Abstract

The invention provides an integrated mounting system and method for a high-temperature gas cooled reactor core supporting structure, and relates to the technical field of nuclear power construction, the integrated mounting system for the high-temperature gas cooled reactor core supporting structure comprises a pre-assembly plant, and a bridge crane is arranged in the pre-assembly plant; the first operation platform is provided with pre-assembly cabins arranged in multiple rows and multiple columns, each pre-assembly cabin is correspondingly provided with two cantilever cranes, and the cantilever cranes are used for reshipment, namely installation, of equipment in the pre-assembly cabins. The integrated mounting system for the high-temperature gas cooled reactor core supporting structure solves the problem that the reactor core supporting structure is lack of an integrated pre-assembly environment outside a nuclear island plant, and provides guarantee for smoothly realizing integrated pre-assembly of the reactor core supporting structure outside the nuclear island plant; the construction difficulty is correspondingly reduced, the construction operation environment is improved, and the construction level of nuclear power engineering in China and the economical efficiency of high-temperature gas cooled reactor nuclear power are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power construction, and in particular to an integrated installation system and installation method for a high-temperature gas-cooled core support structure. Background Art

[0002] The high temperature gas-cooled reactor is an advanced nuclear energy technology with independent intellectual property rights and fourth-generation technical characteristics in my country. It has inherent safety characteristics, a wide range of applications, and very broad commercial prospects. The core support structure of the high temperature gas-cooled reactor is one of the core components of a nuclear power plant and an important guarantee for the safe operation of the reactor. Its installation operation is the difficulty of installation and construction and is the key path that affects the construction progress of the entire nuclear power plant.

[0003] Research on how to shorten the construction period of core support structure installation, ensure safety and improve its construction quality is of great significance to improving the engineering construction level and market competitiveness of high-temperature gas-cooled reactor nuclear power plants. Summary of the invention

[0004] The object of the present invention is to provide an integrated installation system and installation method for a high temperature gas-cooled reactor core support structure, so as to alleviate the technical problem of a long installation period of a high temperature gas-cooled reactor core support structure.

[0005] The present invention provides an integrated installation system for a high-temperature gas-cooled reactor core support structure, comprising a pre-assembly plant, wherein a bridge crane is arranged in the pre-assembly plant; the pre-assembly plant has a roof, and an openable and closable top cover is arranged on the roof;

[0006] A first operating platform is correspondingly arranged at the lower end of the top cover, the first operating platform is arranged in the preassembly area of ​​the preassembly plant, and a transfer area is arranged outside the preassembly plant;

[0007] The first operating platform has pre-assembly cabins arranged in multiple rows and columns, and each pre-assembly cabin is correspondingly provided with two cantilever cranes, and the cantilever cranes are used for transporting and installing equipment in the pre-assembly cabin.

[0008] In an optional embodiment, it further includes a second operating platform, the second operating platform includes a plurality of disassembly platforms, and the plurality of disassembly platforms are arranged in sequence from bottom to top;

[0009] The disassembly platform comprises a concentrically arranged bearing platform and an annular overlapping platform, wherein the annular overlapping platform is sleeved outside the bearing platform; a through hole is arranged in the bearing platform, and a ladder is arranged in the through hole;

[0010] A plurality of first load-bearing columns are evenly arranged on the lower end surface of the bearing platform, and an auxiliary bracket is arranged between the first load-bearing columns and the annular overlapping platform.

[0011] The second operating platform is used to lift the disassembly platform into the high-temperature gas-cooled core support structure in sequence following the cylinder installation process of the high-temperature gas-cooled core support structure during the integrated installation of the high-temperature gas-cooled core support structure. In this way, during the installation of the high-temperature gas-cooled core support structure, it is convenient to install it inside the high-temperature gas-cooled core support structure and it can be increased as the height of the high-temperature gas-cooled core support structure increases.

[0012] In an optional embodiment, a plurality of lifting components are provided on the bearing platform.

[0013] In an optional embodiment, a plurality of second load-bearing columns are arranged between two adjacent load-bearing platforms, and the second load-bearing columns are evenly arranged along the circumference of the through hole;

[0014] Connecting rods are arranged between two adjacent first load-bearing columns, between two adjacent second load-bearing columns, and between adjacent first load-bearing columns and second load-bearing columns.

[0015] In an optional embodiment, the preassembled factory building includes an above-ground factory building and an underground factory building; the underground factory building has a raft foundation; and the first operating platform is arranged on the raft foundation.

[0016] In an optional embodiment, the roof has a support bracket, and the top cover is fixed to the support bracket by bolts.

[0017] In an optional embodiment, the first operating platform includes an upper load-bearing work platform and at least one lower supporting work platform arranged at the lower end of the upper load-bearing work platform; a cabin passage leading to the preassembled cabin is arranged on the lower supporting work platform.

[0018] In an optional embodiment, a support adjustment tool is provided in the preassembly compartment, and the support adjustment tool is used to support the high temperature gas-cooled core support structure.

[0019] The integrated installation system for the high-temperature gas-cooled core support structure provided by the present invention solves the problem of the lack of an integrated pre-assembly environment for the core support structure outside the nuclear island building, and provides a guarantee for the smooth implementation of the integrated pre-assembly of the core support structure outside the nuclear island building; it reduces the construction difficulty accordingly and improves the construction working environment, which is of great significance to improving the construction level of my country's nuclear power projects and the economy of high-temperature gas-cooled reactor nuclear power, and promoting the implementation and commercial promotion of major scientific and technological projects of high-temperature gas-cooled reactors.

[0020] The present invention also provides a method for integrated installation of a high-temperature gas-cooled reactor core support structure, which is installed using the integrated installation system of the high-temperature gas-cooled reactor core support structure in the above-mentioned embodiment, and includes the following steps:

[0021] S1, assembling the support adjustment tooling in the pre-assembly compartment, arranging the shim group on the support adjustment tooling, so that the support adjustment tooling forms the support surface requirements for supporting the high temperature gas-cooled core support structure;

[0022] S2, hoisting the fourth cylinder of the high temperature gas-cooled core support structure onto the support adjustment tooling and adjusting the horizontality of the fourth cylinder;

[0023] Then, a disassembly platform of the second operating platform is assembled in the fourth cylinder, and the third cylinder is hoisted onto the fourth cylinder;

[0024] S3, assembling a disassembly platform of the second operating platform in the third cylinder and connecting the two disassembly platforms;

[0025] After the second cylinder is hoisted onto the third cylinder, a disassembly platform is assembled in the second cylinder and connected to the disassembly platform below;

[0026] The first cylinder is hoisted onto the second cylinder, and then the horizontality of the cylinder of the high-temperature gas-cooled core support structure is adjusted by the support adjustment tool.

[0027] In an optional embodiment, the process further includes S4, pre-assembling a middle metal, graphite and carbon core support structure.

[0028] The present invention provides an integrated installation method for a high-temperature gas-cooled reactor core support structure to solve the problem of lack of adjustment measures after uneven settlement of the reactor core support structure, thereby providing a guarantee for smoothly achieving the quality of integrated pre-assembly of the reactor core support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic structural diagram of an integrated installation system for a high-temperature gas-cooled core support structure provided by an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A structural schematic diagram of a first operating platform of the high-temperature gas-cooled core support structure integrated installation system shown;

[0032] Figure 3 for Figure 2 A schematic structural diagram of the upper load-bearing working platform of the first operating platform shown;

[0033] Figure 4 for Figure 2 A schematic structural diagram of the lower supporting working platform of the first operating platform shown;

[0034] Figure 5 for Figure 1 The structural schematic diagram of the cantilever crane of the high temperature gas-cooled core support structure integrated installation system shown in FIG.

[0035] Figure 6 for Figure 1 A structural schematic diagram of a second operating platform of the high-temperature gas-cooled core support structure integrated installation system shown;

[0036] Figure 7 for Figure 6 A schematic structural diagram of a disassembly platform of the second operating platform shown;

[0037] Figure 8 for Figure 1 A schematic structural diagram of the connection between the roof and the top cover of the high-temperature gas-cooled core support structure integrated installation system shown;

[0038] Fig. 9 for Figure 8 A schematic diagram of the structure of the connection between the roof and the top cover shown;

[0039] Fig.10 for Figure 1 The structural schematic diagram of the support adjustment tooling of the high temperature gas-cooled core support structure integrated installation system shown;

[0040] Fig.11 A structural schematic diagram of a high-temperature gas-cooled reactor core support structure installed in a high-temperature gas-cooled reactor core support structure integrated installation system provided in an embodiment of the present invention.

[0041] Icons: 100-preassembly building; 101-preassembly area; 102-transfer area; 200-roof; 300-top cover; 400-bridge crane; 500-first operating platform; 501-preassembly cabin; 502-upper load-bearing working platform; 503-lower supporting working platform; 504-cabin passage; 600-cantilever crane; 700-second operating platform; 701-load-bearing platform; 702-annular lap platform; 703-perforation; 704-first load-bearing column; 705-second load-bearing column; 706-ladder; 707-hoisting parts; 708-auxiliary bracket; 800-fourth cylinder; 900-third cylinder; 110-second cylinder; 120-first cylinder; 130-raft foundation; 140-support bracket. DETAILED DESCRIPTION

[0042] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.

[0043] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the products of the present application are usually placed when in use. They are only for the convenience of describing the present application and simplifying the 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 application.

[0045] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "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 an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0046] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings.

[0047] Example

[0048] Reference Figure 1-Figure 11 The present invention provides an integrated installation system for a high-temperature gas-cooled core support structure, comprising a pre-assembly plant 100, in which a bridge crane 400 is arranged; the pre-assembly plant 100 has a roof 200, on which an openable and closable top cover 300 is arranged;

[0049] A first operating platform 500 is correspondingly arranged at the lower end of the top cover 300. The first operating platform 500 is arranged in the preassembly area 101 of the preassembly plant 100. A transfer area 102 is arranged outside the preassembly plant 100.

[0050] The first operating platform 500 has pre-assembly cabins 501 arranged in multiple rows and columns, and each pre-assembly cabin 501 is correspondingly provided with two cantilever cranes 600, and the cantilever cranes 600 are used for transporting and installing equipment in the pre-assembly cabin 501.

[0051] In some embodiments, the preassembly building 100 has a roof 200, and the roof 200 has a top cover 300, and the top cover 300 can be opened and closed. When the core support structure and the second operating platform 700 need to be hoisted into the preassembly cabin 501, the top cover 300 can be opened and hoisted into the preassembly cabin 501 from the top cover 300.

[0052] A first operating platform 500 is arranged in the preassembly building 100, and six preassembly compartments 501 are arranged on the first operating platform 500, so that the preassembly building 100 can simultaneously install multiple core support structures in an integrated manner.

[0053] The transfer area 102 outside the preassembly building 100 is used for storing core support structure items and for cargo transfer; the preassembly area 101 is used for cleaning, inspection and assembly of the metal core support structure.

[0054] A 100t bridge crane 400 is installed in the pre-assembly workshop 100, with a span of about 23.55m and an upper limit of the hook of 25m. An auxiliary lifting mechanism is configured on the crane, with a lifting capacity of 20t.

[0055] Reference Figure 6 and Figure 7 In an optional embodiment, it further includes a second operating platform 700, the second operating platform 700 includes a plurality of disassembly platforms, and the plurality of disassembly platforms are sequentially arranged from bottom to top;

[0056] The disassembly platform includes a concentrically arranged bearing platform 701 and an annular overlapping platform 702, wherein the annular overlapping platform 702 is sleeved outside the bearing platform 701; a through hole 703 is arranged in the bearing platform 701, and a ladder 706 is arranged in the through hole 703;

[0057] A plurality of first load-bearing columns 704 are evenly arranged on the lower end surface of the bearing platform 701 , and an auxiliary bracket 708 is arranged between the first load-bearing columns 704 and the annular overlapping platform 702 .

[0058] In an optional implementation, a plurality of hoisting components 707 are provided on the carrying platform 701 .

[0059] In an optional embodiment, a plurality of second load-bearing columns 705 are disposed between two adjacent bearing platforms 701, and the second load-bearing columns 705 are evenly disposed along the circumference of the through hole 703;

[0060] Connecting rods are provided between two adjacent first load-bearing columns 704 , between two adjacent second load-bearing columns 705 , and between adjacent first load-bearing columns 704 and second load-bearing columns 705 .

[0061] In some embodiments, the second operating platform 700 has three disassembly platforms, and the heights from bottom to top are 3000mm, 5000mm and 5000mm respectively; the outer diameter of the bearing platform 701 of the disassembly platform is 4360mm, and the width of the bearing platform 701 is 1200mm; it can bear a weight of 3t, and a plurality of lifting parts 707 are arranged on the bearing platform 701, which makes it convenient to lift the bearing platform 701 into the cylinder of the high-temperature gas-cooled core support structure.

[0062] A ladder 706 is provided in each disassembly platform to facilitate the workers to move between different disassembly platforms, and a guardrail is provided at the top of the second operating platform 700 to effectively prevent the workers from accidentally falling into the through hole 703 of the carrying platform 701.

[0063] Reference Figure 2 In an optional embodiment, the preassembled factory building 100 includes an above-ground factory building and an underground factory building; the underground factory building has a raft foundation 130; and the first operating platform 500 is arranged on the raft foundation 130.

[0064] In some embodiments, the overall size of the preassembly building 100 is 57m×45m×33m (length×width×height); and it is divided into a transfer area 102 and a preassembly area 101; wherein, the preassembly area 101 also has an underground building, that is, the total height of the first operating platform 500 is 20m, wherein a height of 7.5m is below the horizontal plane; the first operating platform 500 is arranged on a raft foundation 130; the elevation of the foundation surface can be adjusted according to the rock formation conditions below the raft foundation 130, and the raft foundation 130 needs to meet the 4800t load-bearing requirement after the overall assembly of the core support structure.

[0065] Reference Figure 8 and Fig. 9 In an optional embodiment, the roof 200 has a support bracket 140, and the top cover 300 is fixed to the support bracket 140 by bolts.

[0066] In some embodiments, the roof 200 has a support bracket 140, and the top cover 300 is fixed to the support bracket 140 by bolts; when the top cover 300 needs to be removed from the roof 200, the top cover 300 and the support bracket 140 can be separated by removing the bolts, that is, the top cover 300 can be removed from the roof 200, which facilitates the lifting of the core support structure from the roof 200 to the preassembly building 100.

[0067] When the top cover 300 is removed, the space opened on the roof 200 is sufficient for lifting out the core support structure and passing through the pulley block of the 3600t crane. The detachable roof 200 is fixed to the support bracket by bolts, and the support bracket is welded to the upper end of the grid of the roof 200.

[0068] In an optional embodiment, the first operating platform 500 includes an upper load-bearing work platform 502 and at least one lower supporting work platform 503 arranged at the lower end of the upper load-bearing work platform 502; a cabin passage 504 leading to the preassembled cabin 501 is arranged on the lower supporting work platform 503.

[0069] The first operating platform 500 includes an upper load-bearing work platform 502 and three lower support work platforms 503. The three lower support work platforms 503 are arranged in sequence, and the upper load-bearing work platform 502 is arranged on the uppermost lower support work platform 503. The upper load-bearing work platform 502 can bear 100 tons, which can meet the construction requirements of the core support structure. The lower support work platform 503 is only arranged with passages leading to each cabin.

[0070] Reference Fig.10 In an optional embodiment, it is characterized in that a support adjustment tool is provided in the preassembly compartment 501, and the support adjustment tool is used to support the high-temperature gas-cooled core support structure.

[0071] The support adjustment tooling includes a hydraulic jack, an upper support and a lower support; the combination of the hydraulic jack, the upper support and the lower support can be used to adjust the core support structure in the pre-assembly stage.

[0072] The integrated installation system for the high-temperature gas-cooled core support structure provided by the present invention solves the problem of the lack of an integrated pre-assembly environment for the core support structure outside the nuclear island building, and provides a guarantee for the smooth implementation of the integrated pre-assembly of the core support structure outside the nuclear island building; it reduces the construction difficulty accordingly and improves the construction working environment, which is of great significance to improving the construction level of my country's nuclear power projects and the economy of high-temperature gas-cooled reactor nuclear power, and promoting the implementation and commercial promotion of major scientific and technological projects of high-temperature gas-cooled reactors.

[0073] The present invention also provides a method for integrated installation of a high-temperature gas-cooled reactor core support structure, which is installed using the integrated installation system of the high-temperature gas-cooled reactor core support structure in the above-mentioned embodiment, and includes the following steps:

[0074] S1, assembling the support adjustment tooling in the pre-assembly compartment 501, arranging the shim group on the support adjustment tooling, so that the support adjustment tooling forms a support surface that can be used to support the high temperature gas-cooled core support structure;

[0075] S2, hoisting the fourth cylinder 800 of the high temperature gas-cooled core support structure onto the support adjustment tooling and adjusting the horizontality of the fourth cylinder 800;

[0076] Then, a disassembly platform of the second operating platform 700 is assembled in the fourth cylinder 800, and then the third cylinder 900 is hoisted onto the fourth cylinder 800;

[0077] S3, assembling a disassembly platform of the second operating platform 700 in the third cylinder 900 and connecting the two disassembly platforms;

[0078] After the second cylinder 110 is hoisted onto the third cylinder 900, a disassembly platform is assembled in the second cylinder 110 and connected to the disassembly platform below;

[0079] The first cylinder 120 is hoisted onto the second cylinder 110, and then the horizontality of the cylinder of the high temperature gas-cooled core support structure is adjusted by the support adjustment tool.

[0080] In an optional embodiment, the process further includes S4, pre-assembling a middle metal, graphite and carbon core support structure.

[0081] The high temperature gas-cooled core support structure has a first cylinder 120, a second cylinder 110, a third cylinder 900 and a fourth cylinder 800 arranged in sequence from top to bottom; the support adjustment tool has a shim group, and the shim group is used to form a support surface that can be used to support the high temperature gas-cooled core support structure;

[0082] The fourth cylinder 800, the disassembly platform, the third cylinder 900, the disassembly platform, the second cylinder 110, the disassembly platform and the first cylinder 120 are hoisted in sequence. As the core support structure increases, the disassembly platforms are installed on the disassembly platform in sequence, so that the second operating platform 700 can meet the requirements for installing the core support structure.

[0083] Installation of the core support structure also requires installation of other items, including pre-assembly of the bottom metal core support structure; pre-assembly of the material irradiation tube assembly, pre-assembly of the bottom metal core support structure, the ball outlet connecting pipe assembly, the ball outlet connecting pipe limit ring assembly, the ball outlet tube assembly, the supporting roller and lower supporting plate assembly, the absorption ball lower supporting plate-bottom plate through-tube, the cold helium gas channel metal connecting pipe and metal tenon.

[0084] It also includes the pre-assembly of the middle metal, graphite and carbon core support structure: bottom limiting I-beam assembly, bottom insulation layer carbon bricks, hot gas duct mouth metal flow-blocking structure, hot gas chamber assembly, bottom reflective layer graphite and carbon assembly, cold helium gas channel bellows assembly, tightening belt assembly, anti-rotation key assembly, side reflective layer graphite and side insulation layer carbon brick assembly, top 3-layer limiting I-beam assembly, top reflective layer and side insulation layer carbon brick assembly, top insulation layer carbon brick assembly.

[0085] Pre-assembly of the top metal core support structure: pre-assembly of the outer ring of the positioning plate, pre-assembly of the metal flow-blocking structure on the top carbon brick, pre-assembly of the positioning plate, pre-assembly of the metal flow-blocking structure on the positioning plate, pre-assembly of the control rods, absorber balls, and neutron source guide tubes on the positioning plate, pre-assembly of the pressure plate anti-rotation key and pressure plate assembly, pre-assembly of the disc spring assembly, pre-assembly of the upper support plate, pre-assembly of the absorber balls and neutron source guide tubes on the upper support plate.

[0086] Reference Fig.11 The high temperature gas-cooled core support structure is an existing technology, and the high temperature gas-cooled core support structure integrated installation system is used for the installation of the high temperature gas-cooled core support structure.

[0087] The present invention provides an integrated installation method for a high-temperature gas-cooled reactor core support structure to solve the problem of lack of adjustment measures after uneven settlement of the reactor core support structure, thereby providing a guarantee for smoothly achieving the quality of integrated pre-assembly of the reactor core support structure.

[0088] The invention relates to an integrated installation method and system for the core support structure of a high temperature gas-cooled reactor nuclear power plant, and belongs to the technical field of nuclear power engineering construction. The method includes designing and constructing a core support structure pre-assembly plant 100, thereby realizing the integrated pre-assembly of 6 sets of core support structures outside the nuclear island plant; designing and manufacturing a core support structure assembly platform, thereby realizing the assembly of the segmented cylinder of the core support structure; designing and manufacturing a core support structure support tooling, thereby realizing the adjustment of the core support structure after settlement.

[0089] The integrated installation and construction method of the core support structure of a high-temperature gas-cooled reactor nuclear power plant not only solves the construction difficulties in assembling the core support structure and reduces construction quality and safety risks, but more importantly, it greatly shortens the critical path construction period and ensures the engineering quality of the installation of the main equipment on the nuclear island.

[0090] A method for integrated installation of a core support structure of a high-temperature gas-cooled reactor nuclear power plant, the method comprising designing and constructing a core support structure preassembly building 100, thereby solving the problem of lack of an integrated preassembly environment outside a nuclear island building of the core support structure, and providing a guarantee for smoothly realizing the integrated preassembly of the core support structure outside a nuclear island building; the method comprising designing and manufacturing a core support structure assembly platform, thereby solving the problem of lack of a construction work surface when assembling a segmented cylinder of the core support structure, and providing a guarantee for smoothly realizing the segmented cylinder assembly of the core support structure; the method comprising designing and manufacturing a core support structure support tooling, thereby solving the problem of lack of adjustment measures after uneven settlement of the core support structure, and providing a guarantee for smoothly realizing the quality of integrated preassembly of the core support structure.

[0091] The present invention adopts a variety of professional designs and advanced processes, which reduces the construction difficulty and improves the construction environment. The present invention is of great significance to improving the construction level of my country's nuclear power projects and the economy of high-temperature gas-cooled reactor nuclear power, and promoting the implementation and commercialization of major scientific and technological projects of high-temperature gas-cooled reactors.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated installation system for a high-temperature gas-cooled core support structure, characterized in that: The invention comprises a preassembly plant (100), wherein a bridge crane (400) is arranged in the preassembly plant (100); the preassembly plant (100) has a roof (200), and an openable and closable top cover (300) is arranged on the roof (200); A first operating platform (500) is correspondingly arranged at the lower end of the top cover (300), the first operating platform (500) is arranged in a preassembly area (101) of a preassembly plant (100), and a transfer area (102) is arranged outside the preassembly plant (100); The first operating platform (500) has pre-assembly cabins (501) arranged in multiple rows and columns, and each pre-assembly cabin (501) is correspondingly provided with two cantilever cranes (600), and the cantilever cranes (600) are used for transporting and installing equipment in the pre-assembly cabin (501).

2. The high temperature gas-cooled reactor core support structure integrated installation system according to claim 1, characterized in that: It also includes a second operating platform (700), the second operating platform (700) includes a plurality of disassembly platforms, and the plurality of disassembly platforms are arranged in sequence from bottom to top; The disassembly platform comprises a bearing platform (701) and an annular overlapping platform (702) which are arranged concentrically, wherein the annular overlapping platform (702) is sleeved outside the bearing platform (701); a through hole (703) is arranged inside the bearing platform (701), and a ladder (706) is arranged inside the through hole (703); A plurality of first load-bearing columns (704) are evenly arranged on the lower end surface of the bearing platform (701), and an auxiliary bracket (708) is arranged between the first load-bearing columns (704) and the annular overlapping platform (702).

3. The high temperature gas-cooled reactor core support structure integrated installation system according to claim 2, characterized in that: A plurality of hanging parts (707) are arranged on the bearing platform (701).

4. The high temperature gas-cooled core support structure integrated installation system according to claim 3, characterized in that: A plurality of second load-bearing columns (705) are arranged between two adjacent bearing platforms (701), and the second load-bearing columns (705) are evenly arranged along the circumference of the through hole (703); Connecting rods are provided between two adjacent first load-bearing columns (704), between two adjacent second load-bearing columns (705), and between adjacent first load-bearing columns (704) and second load-bearing columns (705).

5. The high temperature gas-cooled reactor core support structure integrated installation system according to claim 1, characterized in that: The preassembled factory building (100) comprises an above-ground factory building and an underground factory building; the underground factory building has a raft foundation (130); and the first operating platform (500) is arranged on the raft foundation (130).

6. The high temperature gas-cooled reactor core support structure integrated installation system according to claim 1, characterized in that: The roof (200) has a support bracket (140), and the top cover (300) is fixed on the support bracket (140) by bolts.

7. The high temperature gas-cooled reactor core support structure integrated installation system according to claim 1, characterized in that: The first operating platform (500) comprises an upper load-bearing working platform (502) and at least one lower supporting working platform (503) arranged at the lower end of the upper load-bearing working platform (502); a cabin passage (504) leading to the pre-assembled cabin (501) is arranged on the lower supporting working platform (503).

8. The high temperature gas-cooled reactor core support structure integrated installation system according to claim 1, characterized in that: A support adjustment tool is arranged in the pre-assembly compartment (501), and the support adjustment tool is used to support the high-temperature gas-cooled core support structure.

9. A method for integrated installation of a high-temperature gas-cooled core support structure, characterized in that: The installation is performed using the integrated installation system for the high temperature gas-cooled core support structure according to any one of claims 1 to 8, and includes the following steps: S1, assembling a support adjustment tool in a pre-assembly compartment (501), arranging a shim group on the support adjustment tool, so that a support surface that can be used to support a high-temperature gas-cooled reactor core support structure is formed on the support adjustment tool; S2, hoisting the fourth cylinder (800) of the high temperature gas-cooled core support structure onto the support adjustment tooling and adjusting the horizontality of the fourth cylinder (800); Then, a disassembly platform of the second operating platform (700) is assembled in the fourth cylinder (800), and then the third cylinder (900) is hoisted onto the fourth cylinder (800); S3, assembling a disassembly platform of the second operating platform (700) in the third cylinder (900) and connecting the two disassembly platforms; After the second cylinder (110) is hoisted onto the third cylinder (900), a disassembly platform is assembled inside the second cylinder (110) and connected to the disassembly platform below; The first cylinder (120) is hoisted onto the second cylinder (110), and then the horizontality of the cylinder of the high-temperature gas-cooled core support structure is adjusted by a support adjustment tool.

10. The method for integrated installation of a high temperature gas-cooled reactor core support structure according to claim 9, characterized in that: Also included is S4, the pre-assembly of the mid-section metal, graphite and carbon core support structure.

Images