Anti-deformation bracket for nuclear power station containment transportation

Abstract

The utility model relates to the technical field of nuclear power stations, in particular to an anti-deformation bracket for nuclear power station containment transportation. The nuclear power station containment transportation anti-deformation bracket comprises a truss and a supporting cushion frame. The truss comprises a plurality of main frame bodies, and the plurality of main frame bodies are sequentially connected end to end to form a main frame; the plurality of supporting pad frames are arranged at intervals, and are sequentially connected through the main frame; in every two adjacent main frame bodies, a first lifting lug is arranged on one main frame body, a second lifting lug is arranged on the other main frame body, the first lifting lug and the second lifting lug are connected through a first pin shaft after being matched, one of the first lifting lug and the second lifting lug is a single-side lifting lug, and the other one of the first lifting lug and the second lifting lug is a double-side lifting lug. The utility model provides an anti-deformation bracket for transportation of a containment vessel of a nuclear power station, which is used for preventing the containment vessel from being deformed in the transportation process.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant technology, and in particular to a deformation-resistant support for transporting nuclear power plant containment structures. Background Technology

[0002] Currently, the containment vessel serves as a crucial protective barrier for the nuclear reactor during the construction of nuclear power plants, and its construction and transportation processes require extremely high levels of safety and precision. The containment vessel of the AP series nuclear power plants adopts modular construction technology, dividing this large steel component into several modules for manufacturing, transportation, and assembly. These modules include the bottom head, the shell (several sections), and the top head, which are ultimately assembled through hoisting and welding.

[0003] This modular construction technology can significantly improve construction efficiency, but it also faces many challenges in the transportation phase. Because the containment structure is thin-walled, its local stiffness is low, making it susceptible to deformation under external forces during transportation. Typically, containment modules are transported using four transport vehicles. However, during the lifting, traveling, and turning processes of the transport vehicles, asynchronous operation between the vehicles can easily cause relative displacement, leading to structural deformation or damage to the containment. This deformation not only increases the difficulty of assembling the containment but may also affect its final strength and function.

[0004] Therefore, it is imperative to transport the containment vessel as a complete module. However, how to improve the rigidity of the containment vessel during transportation and prevent it from deforming has become an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a deformation-resistant support for transporting nuclear power plant containment vessels, so as to at least prevent the containment vessels from deforming during transportation.

[0006] To achieve the above objectives, this utility model provides a nuclear power plant containment transport anti-deformation bracket, which includes a truss and a support pad for fixing to a transport vehicle.

[0007] The truss includes a main frame, and multiple main frames are provided. The multiple main frames are connected end to end to form a main frame. Multiple support pads are provided, and the multiple support pads are spaced apart and connected in sequence through the main frame.

[0008] In two adjacent main frames, one main frame is provided with a first lifting lug and the other main frame is provided with a second lifting lug. The first lifting lug and the second lifting lug are connected by a first pin after they are engaged. Among the first lifting lug and the second lifting lug, one is a single-sided lifting lug and the other is a double-sided lifting lug.

[0009] Furthermore, the truss also includes a first latch, and the first pin connects the first lifting lug and the second lifting lug, and is locked by the first latch.

[0010] Furthermore, the main frame has a polygonal structure, and the number of the main frame's corners is the same as the number of the support pads, with multiple support pads connected one-to-one to each corner of the main frame.

[0011] Furthermore, the truss also includes a reinforcing frame, the two ends of which are respectively connected between two adjacent side structures of the main frame.

[0012] Furthermore, multiple reinforcing frames are provided, and each reinforcing frame is correspondingly provided at each corner of the main frame.

[0013] Furthermore, the main frame and / or the reinforcing frame are made of square or round tubing.

[0014] Furthermore, the reinforcing frame is provided with a third lifting lug, and the main frame of the main frame is provided with a fourth lifting lug. The third lifting lug and the fourth lifting lug are connected by a second pin after they are engaged. Among the third lifting lug and the fourth lifting lug, one is a single-sided lifting lug and the other is a double-sided lifting lug.

[0015] Furthermore, the truss also includes a second latch, which locks the second pin after it connects the third lug and the fourth lug.

[0016] Furthermore, the main frame has a quadrilateral structure, and there are four support pads, which are respectively located at the four corners of the main frame.

[0017] Furthermore, the support frame includes multiple pads, which are sequentially spliced ​​together along the thickness direction of the pads to form a support surface, and the main frame is connected to the support surface.

[0018] By adopting the above technical solution, the nuclear power plant containment transport anti-deformation bracket of this utility model has at least the following beneficial effects:

[0019] In this bracket, for example, among two adjacent main frames, one is a first main frame and the other is a second main frame. The first main frame is provided with a first lifting lug, and the second main frame is provided with a second lifting lug. Optionally, the first lifting lug is a single-sided lifting lug and the second lifting lug is a double-sided lifting lug, or the first lifting lug is a double-sided lifting lug and the second lifting lug is a single-sided lifting lug. The following explanation uses the example of the first lifting lug being a single-sided lifting lug and the second lifting lug being a double-sided lifting lug.

[0020] It should be noted that both single-sided and double-sided lifting lugs are existing technologies. A single-sided lifting lug has one connecting plate, while a double-sided lifting lug has two connecting plates spaced apart. Lifting lug holes are provided on both the connecting plate on the single-sided lifting lug and the two connecting plates on the double-sided lifting lug.

[0021] When using this bracket, the support pads need to be fixed to the transport vehicle, and then the truss is assembled. Multiple main frame bodies are sequentially connected end to end to form the main frame, that is, adjacent main frame bodies are connected by the first pin. Specifically, a connecting plate of a single-sided lifting lug on the first main frame body is inserted between two connecting plates of a double-sided lifting lug on the second main frame body, so that the lifting lug holes of the single-sided lifting lug and the two double-sided lifting lugs correspond. Then, the first pin is sequentially passed through the three lifting lug holes, completing the assembly of the main frame in the truss. The assembled main frame is then fixed to the support pads, and multiple support pads are sequentially connected through the main frame at intervals, thus completing the installation of the bracket.

[0022] With this setup, the containment vessel is placed on multiple support frames during transportation. These support frames are connected sequentially and at intervals through the main frame, allowing the main frame to limit and fix the support frames, preventing relative displacement of the support frames during transportation and thus preventing deformation of the containment vessel.

[0023] It should be noted that adjacent main frame sections are connected via single-sided or double-sided lifting lugs and a first pin. Compared to bolted connections, which require more time for installation and disassembly, this method reduces the number of connecting parts, lowers the assembly difficulty and workload of the truss, reduces the labor intensity of workers, improves installation and disassembly efficiency, and significantly shortens the installation and disassembly time. In summary, the nuclear power plant containment vessel transport anti-deformation bracket of this embodiment has a simple structure, is easy to manufacture, and is convenient to install and disassemble. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the nuclear power plant containment transport anti-deformation bracket and the containment provided in an embodiment of the present invention;

[0026] Figure 2 This is one of the structural schematic diagrams of the main frame of the nuclear power plant containment transport anti-deformation bracket provided in this embodiment of the utility model;

[0027] Figure 3 This is the second structural schematic diagram of the main frame of the nuclear power plant containment transport anti-deformation bracket provided in this embodiment of the utility model;

[0028] Figure 4 This is one of the structural schematic diagrams of the reinforcing frame in the anti-deformation bracket for transporting nuclear power plant containment structures provided in this embodiment of the utility model;

[0029] Figure 5 This is the second schematic diagram of the reinforcing frame in the anti-deformation support for transporting the nuclear power plant containment structure, provided in this embodiment of the utility model.

[0030] Figure 6 A partial structural diagram of the truss in the nuclear power plant containment transport anti-deformation bracket provided in this embodiment of the utility model (the part between adjacent main frames);

[0031] Figure 7 for Figure 6 Enlarged view of a section of the central truss structure;

[0032] Figure 8 A partial structural diagram of the truss in the nuclear power plant containment transport anti-deformation bracket provided in this embodiment of the utility model (the part between the main frame and the reinforcing frame).

[0033] Figure label:

[0034] 1- Truss; 11- Main frame; 12- Reinforcing frame;

[0035] 2-Support pad frame;

[0036] 31-First lifting lug; 32-Second lifting lug; 33-First pin; 34-First latch;

[0037] 41 - Third lug; 42 - Fourth lug;

[0038] 5-Containment. Detailed Implementation

[0039] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Example

[0043] Please see Figure 1 This embodiment provides a deformation-resistant transport bracket for nuclear power plant containment structures. The bracket includes a truss 1 and support pads 2 for fixing to a transport vehicle. The truss 1 includes multiple main frame bodies 11, which are sequentially connected end-to-end to form a main frame. Multiple support pads 2 are spaced apart and sequentially connected through the main frame. Please refer to [link to previous document]. Figure 2 and Figure 3 and combined Figure 6 and Figure 7 In two adjacent main frames 11, one main frame 11 is provided with a first lifting lug 31 and the other main frame 11 is provided with a second lifting lug 32. After the first lifting lug 31 and the second lifting lug 32 are engaged, they are connected by a first pin 33. Among the first lifting lug 31 and the second lifting lug 32, one is a single-sided lifting lug and the other is a double-sided lifting lug.

[0044] For example, in two adjacent main frame bodies 11, one main frame body 11 is the first main frame body, and the other main frame body 11 is the second main frame body. The first main frame body is provided with a first lifting lug 31, and the second main frame body is provided with a second lifting lug 32. Optionally, the first lifting lug 31 is a single-sided lifting lug, and the second lifting lug 32 is a double-sided lifting lug, or the first lifting lug 31 is a double-sided lifting lug, and the second lifting lug 32 is a single-sided lifting lug. The following explanation uses the example of the first lifting lug 31 being a single-sided lifting lug and the second lifting lug 32 being a double-sided lifting lug.

[0045] It should be noted that both single-sided and double-sided lifting lugs are existing technologies. A single-sided lifting lug has one connecting plate, while a double-sided lifting lug has two connecting plates spaced apart. Lifting lug holes are provided on both the connecting plate on the single-sided lifting lug and the two connecting plates on the double-sided lifting lug.

[0046] When using this bracket, the support pad 2 needs to be fixed to the transport vehicle, and then the truss 1 is assembled. Multiple main frame bodies 11 are connected end to end to form the main frame, that is, adjacent main frame bodies 11 are connected by the first pin 33. Specifically, a connecting plate of a single-sided lifting lug on the first main frame body is inserted between two connecting plates of a double-sided lifting lug on the second main frame body, so that the lifting lug holes of the single-sided lifting lug and the two connecting plates of the double-sided lifting lug correspond. Then, the first pin 33 is passed through the three lifting lug holes in sequence, completing the assembly of the main frame in the truss 1. Then, the assembled main frame is fixed to the support pad 2, so that multiple support pads 2 are connected in sequence through the main frame at intervals, thus completing the installation of the bracket.

[0047] With this configuration, when transporting the containment vessel 5, the containment vessel 5 is placed on multiple support pads 2, which support the containment vessel 5. The multiple support pads 2 are connected sequentially and at intervals through the main frame, so that the main frame can limit and fix the multiple support pads 2, preventing the multiple support pads 2 from shifting relative to each other during transportation, which would cause the containment vessel 5 to deform during transportation.

[0048] It should be noted that adjacent main frame bodies 11 are connected via single-sided or double-sided lifting lugs and a first pin 33. Compared to bolted connections, which require more time for installation and disassembly, the connection method of the main frame bodies 11 in this embodiment reduces the number of connecting parts, lowers the assembly difficulty and workload of the truss 1, reduces the labor intensity of the workers, improves installation and disassembly efficiency, and significantly shortens the installation and disassembly time. In summary, the nuclear power plant containment transport anti-deformation bracket structure of this embodiment is simple, easy to manufacture, and convenient to install and disassemble.

[0049] Preferably, please refer to Figure 6 and Figure 7 In this embodiment, the truss 1 also includes a first latch 34. After the first pin 33 connects the first lifting lug 31 and the second lifting lug 32, it is locked by the first latch 34.

[0050] This design prevents the first pin 33 from falling off the first lifting lug 31 and the second lifting lug 32, thereby improving the connection strength between adjacent main frame bodies 11.

[0051] Preferably, in this embodiment, the main frame has a polygonal structure, and the number of corners of the main frame is the same as the number of support pads 2. Multiple support pads 2 are connected to each corner of the main frame in a one-to-one correspondence.

[0052] For example, the main frame may have a quadrilateral, pentagonal, hexagonal, or heptagonal structure, and correspondingly, the number of supporting pads 2 may be four, five, six, or seven.

[0053] With this setup, the support pad 2 is connected to the corner of the main frame, thus providing more stable and reliable support for the main frame.

[0054] It should be noted that the main frame is formed by multiple main frame bodies 11 connected end to end in sequence. Therefore, when the main frame has a polygonal structure, each side structure of the main frame may include several main frame bodies 11. Optionally, each side structure of the main frame may include one, two, three or four main frame bodies 11. The number is not limited here and should be selected according to actual needs.

[0055] Preferably, please refer to Figure 1 In this embodiment, the truss 1 also includes a reinforcing frame 12, the two ends of which are respectively connected between two adjacent side structures of the main frame.

[0056] The reinforcement frame 12 improves the structural stability of the main frame and prevents deformation of the main frame to a certain extent, thereby improving the structural strength of the truss 1 and preventing the relative displacement of the support pad 2 during transportation, which would affect the rigid transportation of the containment 5.

[0057] Preferably, please refer to Figure 1 In this embodiment, multiple reinforcing frames 12 are provided, and the multiple reinforcing frames 12 are provided one-to-one at each corner of the main frame.

[0058] In other words, a reinforcing frame 12 is installed at each corner of the main frame, which further improves the structural stability of the main frame and prevents the main frame from deforming.

[0059] Optionally, the main frame 11 is made of square or round tube, or the reinforcing frame 12 is made of square or round tube, or both the main frame 11 and the reinforcing frame 12 are made of square or round tube.

[0060] Among them, square or round tubes, compared with angle steel, have no sharp edges in their overall structure, which fundamentally avoids the risk of damaging the slings during the hoisting of truss 1 and increases the safety of truss 1.

[0061] Preferably, please refer to Figure 4 and Figure 5 and combined Figure 8 In this embodiment, the reinforcing frame 12 is provided with a third lifting lug 41, and the main frame 11 of the main frame is provided with a fourth lifting lug 42. After the third lifting lug 41 and the fourth lifting lug 42 are engaged, they are connected by a second pin. Among the third lifting lug 41 and the fourth lifting lug 42, one is a single-sided lifting lug and the other is a double-sided lifting lug.

[0062] Optionally, the third lug 41 is a single-sided lug and the fourth lug 42 is a double-sided lug, or the third lug 41 is a double-sided lug and the fourth lug 42 is a single-sided lug. The following explanation uses the example of the third lug 41 being a single-sided lug and the fourth lug 42 being a double-sided lug.

[0063] With this setup, the reinforcing frame 12 is connected to the main frame 11 of the main frame through a single-sided lifting lug, a double-sided lifting lug, and a second pin. Compared with bolted connections, which require more time for installation and disassembly, the connection method in this embodiment reduces the number of connecting parts used, reduces the assembly difficulty of the truss 1, the assembly workload, and the labor intensity of the workers, improves the installation and disassembly efficiency, and greatly shortens the installation and disassembly time.

[0064] Preferably, in this embodiment, the truss 1 further includes a second latch, and after the second pin connects the third lifting lug 41 and the fourth lifting lug 42, it is locked by the second latch.

[0065] This design prevents the second pin from detaching from the third lifting lug 41 and the fourth lifting lug 42, thereby improving the connection strength between the reinforcing frame 12 and the main frame 11 of the main frame.

[0066] Preferably, please refer to Figure 1 In this embodiment, the main frame has a quadrilateral structure, and there are four support pads 2, which are respectively set at the four corners of the main frame.

[0067] This configuration, while providing stable and reliable support for the containment vessel 5, reduces the number of support pads 2 in the bracket and simplifies the structure of the truss 1, thereby reducing the cost of the bracket and improving its economic efficiency.

[0068] In summary, the bracket in this embodiment improves construction efficiency, reduces usage costs, and lowers the labor intensity of workers while ensuring the transportation of the containment vessel 5.

[0069] For example, see Figure 1 In this embodiment, the main frame has a quadrilateral structure, each side structure includes two main frame bodies 11, so the main frame as a whole includes eight main frame bodies 11. There is a reinforcing frame 12 between two adjacent side structures, so there are four reinforcing frames 12.

[0070] Preferably, please refer to Figure 1 In this embodiment, the support frame 2 includes multiple pads. The multiple pads are spliced ​​together in sequence along the thickness direction of the pads to form a support surface. The main frame is connected to the support surface, and the safety shell 5 is disposed on the support surface.

[0071] In summary, the bracket in this embodiment has a simple overall structure, a compact and ingenious design, high structural strength and rigidity, and strong connection strength. The length of truss 1 can be adjusted according to the needs of the goods. It is suitable for the overall transportation and deformation prevention of large thin-walled structures, such as the transportation of the AP nuclear power plant containment vessel 5 cylinder and top end cap, and the transportation of the entire SC shielded building module. It can effectively improve the transportation efficiency of containment vessel 5, and has high structural strength and versatility. It can adapt to the transportation needs of various modules in the modular construction of nuclear power plants, ensuring the safety and economy of the transportation process. It has the following advantages:

[0072] Multifunctionality: The truss 1 section height is less than one meter, and it can pass through the gap between the support piers of the containment 5, making it suitable for the transportation of the cylinder and top end cap, thus expanding its application range.

[0073] Error prevention: The significant differences in structure and size of each truss section 1 greatly reduce the possibility of incorrect assembly of truss 1, making it easier to use truss 1.

[0074] Economic efficiency: The small size and low weight of truss 1 significantly reduce its manufacturing cost. Short-distance transport can be completed using a manual forklift. In addition, due to its ingenious structural design, the installation and dismantling efficiency is high, reducing labor and equipment costs and significantly lowering the total construction cost, resulting in good economic efficiency.

[0075] In addition, the operating steps for using the nuclear power plant containment transport anti-deformation bracket in this embodiment are as follows:

[0076] Step 1: Complete the manufacturing of truss 1 and support pad 2 according to the design drawings.

[0077] Step 2: Mark the outline of truss 1 on the ground at the assembly location of containment 5, determine the placement position of each section of truss 1, and place the temporary supports for truss 1 assembly. The height of the temporary supports shall not be lower than the height of the assembly supports for containment 5.

[0078] Step 3: Determine the assembly sequence of truss 1, transport the first section of truss 1 to containment 5, and use a crane or other means to hoist truss 1 onto the support and position it according to the line.

[0079] Step 4: Transport and hoist the second truss section 1 in sequence, and install the first pin 33 between trusses 1.

[0080] Step 5: Install the other trusses 1 in the same way to complete the assembly of trusses 1. The entire truss 1 should be raised to a height not lower than the bottom of the containment 5 by no less than 8 supports.

[0081] Step 6: The transport vehicle group, carrying the support frame 2, is positioned according to the transport plan.

[0082] Step 7: Use connecting plates to weld the truss 1 support pad 2 together.

[0083] Step 8: After the containment vessel 5 is transported, cut off the connecting plate between the truss 1 and the support pad 2, disassemble the truss 1, and transport the truss 1 to a temporary storage site for future use.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A deformation-resistant transport bracket for nuclear power plant containment structures, characterized in that, Includes a truss (1) and a support pad (2) for fixing to the transport vehicle; The truss (1) includes a main frame (11), and multiple main frame (11) are provided. Multiple main frame (11) are connected end to end to form a main frame. Multiple support pads (2) are provided, and multiple support pads (2) are spaced apart and connected in sequence through the main frame. In two adjacent main frame bodies (11), one main frame body (11) is provided with a first lifting lug (31), and the other main frame body (11) is provided with a second lifting lug (32). After the first lifting lug (31) and the second lifting lug (32) are engaged, they are connected by a first pin (33). Among the first lifting lug (31) and the second lifting lug (32), one is a single-sided lifting lug and the other is a double-sided lifting lug.

2. The nuclear power plant containment vessel transport anti-deformation bracket according to claim 1, characterized in that, The truss (1) also includes a first latch (34), and the first pin (33) is locked by the first latch (34) after connecting the first lug (31) and the second lug (32).

3. The nuclear power plant containment vessel transport anti-deformation bracket according to claim 1, characterized in that, The main frame has a polygonal structure, and the number of the main frame's corners is the same as the number of the support pads (2). Multiple support pads (2) are connected one-to-one to each corner of the main frame.

4. The nuclear power plant containment transport anti-deformation bracket according to claim 3, characterized in that, The truss (1) also includes a reinforcing frame (12), the two ends of which are respectively connected between two adjacent side structures of the main frame.

5. The nuclear power plant containment vessel transport anti-deformation bracket according to claim 4, characterized in that, Multiple reinforcing frames (12) are provided, and the multiple reinforcing frames (12) are provided one-to-one at each corner of the main frame.

6. The nuclear power plant containment vessel transport anti-deformation bracket according to claim 4, characterized in that, The main frame (11) and / or the reinforcing frame (12) are made of square or round tubes.

7. The nuclear power plant containment vessel transport anti-deformation bracket according to claim 4, characterized in that, The reinforcing frame (12) is provided with a third lifting lug (41), and the main frame (11) of the main frame is provided with a fourth lifting lug (42). The third lifting lug (41) and the fourth lifting lug (42) are connected by a second pin after they are engaged. Among the third lifting lug (41) and the fourth lifting lug (42), one is a single-sided lifting lug and the other is a double-sided lifting lug.

8. The nuclear power plant containment transport anti-deformation bracket according to claim 7, characterized in that, The truss (1) also includes a second latch, which locks the third lifting lug (41) and the fourth lifting lug (42) after the second pin is connected.

9. The nuclear power plant containment vessel transport anti-deformation bracket according to claim 3, characterized in that, The main frame has a quadrilateral structure, and there are four support pads (2), which are respectively located at the four corners of the main frame.

10. The nuclear power plant containment transport anti-deformation bracket according to any one of claims 1-9, characterized in that, The support frame (2) includes multiple pads. Along the thickness direction of the pads, the multiple pads are spliced ​​together in sequence to form a support surface. The main frame is connected to the support surface.

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