Flange connecting structure

Abstract

The invention provides a flange connecting structure, which relates to the technical field of flange connection of power line repair towers, and comprises a first flange, a second flange, a first inserting part and a second inserting part, the first flange and the second flange are connected through a first inserting part in the first preset direction, and the first preset direction is parallel to the axis of the first flange and the axis of the second flange. The first flange and the second flange are connected through a second inserting part in the second preset direction, and the second preset direction is arranged in the radial direction of the first flange and the second flange. The flange can be quickly aligned and connected along the axial direction through the first inserting part, and the second inserting part ensures the safe locking in the radial direction, so that the connecting process between the tower sections of the power repair tower is greatly simplified, and the construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of flange connection technology for power emergency repair towers, and more specifically, to a flange connection structure. Background Technology

[0002] Currently, most power emergency repair tower sections are connected using flange bolts. This method has significant drawbacks: construction is time-consuming and inefficient; the strength and service life of the bolt connections are easily affected; and construction is complex.

[0003] Because existing flange connections rely on bolt fastening, bolts require high-precision hole alignment, which makes rapid positioning difficult in a hoisting environment, resulting in time consumption and reduced construction efficiency; because bolts are prone to loosening under alternating loads, connection strength and service life are reduced; and because flange connections require a large number of bolts, construction complexity is increased. Summary of the Invention

[0004] The main objective of this invention is to provide a flange connection structure to solve the technical problems of time-consuming and inefficient construction, low bolt connection strength and short service life, and complex construction caused by the use of bolted connections for the flanges of power emergency repair towers in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a flange connection structure is provided, comprising a first flange, a second flange, a first insertion portion, and a second insertion portion;

[0006] The first flange and the second flange are connected by a first plug-in portion along a first preset direction, the first preset direction being parallel to the axis of the first flange and the axis of the second flange; the first flange and the second flange are connected by a second plug-in portion along a second preset direction, the second preset direction being radially arranged along the first flange and the second flange.

[0007] In some embodiments, the first plug-in portion includes a first socket and a first plug, which are plugged into each other; one of the first socket and the first plug is provided on the first flange, and the other of the first socket and the first plug is provided on the second flange.

[0008] In some embodiments, the inner surface of the first socket and the outer surface of the first plug are fitted together.

[0009] In some embodiments, there are multiple first sockets arranged circumferentially along the first flange or the second flange; there are multiple first plugs arranged circumferentially along the first flange or the second flange; the multiple first sockets and the multiple first plugs are configured in a one-to-one correspondence, and each first socket is plugged into and connected to the corresponding plug.

[0010] In some embodiments, the outer diameter of the first flange is larger than the outer diameter of the second flange, and the second insertion part includes: a second insertion hole and a second insert. The second insertion hole is opened on the side wall of the second flange, and the axis of the second insertion hole is arranged radially along the second flange. The first flange is provided with a connecting part, and the connecting part is provided with a first through hole. The first through hole and the second insertion hole are connected by the second insert.

[0011] In some embodiments, there are multiple second sockets, which are arranged circumferentially along the second flange; there are multiple connecting parts, which are arranged circumferentially along the first flange, and the multiple connecting parts and the multiple second sockets are arranged in a one-to-one correspondence; there are multiple second plugs, which are arranged in a one-to-one correspondence with the multiple second sockets, and each second socket is connected to the first through hole of the corresponding connecting part through the second plug.

[0012] In some embodiments, the second jack is interference-fitted with the second plug.

[0013] In some embodiments, the connection portion of the first flange is fitted against the sidewall of the second flange.

[0014] In some embodiments, the second insertion hole is formed on the side wall of the second flange away from the first flange; the first through hole is formed on the side of the connection portion away from the first flange.

[0015] In some embodiments, the first flange and the second flange are coaxially arranged; and / or,

[0016] Both the first flange and the second flange are annular structures.

[0017] This invention provides a flange connection structure that enables rapid axial alignment and connection of the flange through a first insertion part, while a second insertion part ensures radial safety locking. This greatly simplifies the connection process between power repair tower sections and improves construction efficiency. Compared with traditional bolted connections, this solution reduces the complexity and danger of high-altitude operations. Simultaneously, the mechanical engagement and anti-disengagement pin design ensure the stability and reliability of the connection, maintaining good performance even under harsh environmental conditions. Furthermore, this connection method supports multiple disassembly and assembly without compromising connection quality due to repeated use, extending the service life of the repair tower and reducing maintenance costs. It is particularly suitable for emergency repairs and rapid deployment scenarios.

[0018] In summary, this invention not only improves the assembly speed of power repair towers but also ensures their structural stability and safety, which has significant benefits for improving the power grid's emergency response capabilities and reducing repair costs. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 An assembly schematic diagram of an embodiment of a flange connection structure according to the present invention is shown;

[0021] Figure 2 A schematic diagram of an embodiment of a flange connection structure according to the present invention is shown;

[0022] Figure 3 A bottom view of an embodiment of a flange connection structure according to the present invention is shown;

[0023] Figure 4 A schematic diagram of a first flange, a first insert, and a connecting part according to an embodiment of a flange connection structure based on the present invention is shown.

[0024] Figure 5 A schematic diagram of a second flange and a first socket according to an embodiment of a flange connection structure based on the present invention is shown.

[0025] The above figures include the following reference numerals:

[0026] 100, First flange; 110, Connecting part; 111, First through hole; 200, Second flange; 300, First insertion part; 310, First insertion hole; 320, First insert; 400, Second insertion part; 410, Second insertion hole; 420, Second insert. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 5 As shown, the first embodiment of the present invention provides a flange connection structure, including a first flange 100, a second flange 200, a first insertion portion 300, and a second insertion portion 400; the first flange 100 and the second flange 200 are connected by the first insertion portion 300 along a first preset direction, the first preset direction being parallel to the axis of the first flange 100 and the axis of the second flange 200; the first flange 100 and the second flange 200 are connected by the second insertion portion 400 along a second preset direction, the second preset direction being radially arranged along the first flange 100 and the second flange 200.

[0029] By applying the technical solution of this embodiment, rapid connection of the flange of the power emergency repair tower can be achieved. The flange connection structure includes a first flange 100, a second flange 200, a first insertion part 300, and a second insertion part 400. The first flange 100 and the second flange 200 are mechanically engaged through the first insertion part 300 along a first preset direction. The first preset direction is parallel to the axis of the two flanges, achieving preliminary positioning and improving connection strength, and restricting the radial movement of the first flange 100 and the second flange 200. At the same time, the two flanges are further strengthened in connection stability along the second preset direction, i.e., radially, through the second insertion part, which restricts the axial displacement of the first flange 100 and the second flange 200, forming a dual safety guarantee mechanism.

[0030] This design reduces reliance on traditional bolt connections, significantly improving the construction efficiency of emergency repair towers, lowering the risk of reduced connection strength due to insufficient bolt tightening, and simplifying the construction process. The mechanical interlocking structure formed by the first insertion part 300 and the second insertion part 400 increases friction, effectively resisting lateral and longitudinal external forces and ensuring the stability of the tower structure. It not only enhances connection safety but also allows for rapid assembly and disassembly, avoiding damage to the flange hole walls caused by repeated drilling, and extending the service life of the flange and the emergency repair tower. In summary, this technical solution effectively solves the problems of time-consuming and inefficient flange connection construction, environmental influence on bolt connection strength, and complex construction processes in existing power emergency repair tower technologies, greatly improving the assembly efficiency and safety performance of emergency repair towers.

[0031] Furthermore, in this embodiment, as Figure 2 and Figure 5 As shown, the first plug-in portion 300 includes: a first plug hole 310 and a first plug 320, which are plugged into each other; one of the first plug hole 310 and the first plug 320 is provided on the first flange 100, and the other of the first plug hole 310 and the first plug 320 is provided on the second flange 200.

[0032] In this embodiment, the first insertion part 300 consists of a first insertion hole 310 and a first insert 320, which are connected by insertion to achieve rapid docking. Specifically, one of the first flange 100 and the second flange 200 is equipped with the first insertion hole 310, and the other is equipped with the first insert 320. This configuration allows the first insert 320 to be accurately inserted into the first insertion hole 310 during tower segment splicing, forming a stable insertion structure. This design eliminates the reliance on bolts in traditional flange connections, greatly simplifies the connection process, and improves the efficiency of on-site assembly of power repair towers. At the same time, the mechanical interlocking effect of the first insertion part 300 combined with the anti-loosening structure of the pin ensures the strength and stability of the connection, maintaining good working condition even in harsh natural environments and reducing safety hazards caused by loose connections. In addition, this connection method supports repeated disassembly and assembly of tower segments, avoids potential wear on the hole walls in bolted connections, extends the service life of the flange, and reduces the maintenance cost of power repair towers. In summary, the introduction of the first plug-in part 300 makes the new power repair tower flange connection method more efficient, safe, and durable, especially suitable for emergency repairs or frequent disassembly and assembly, significantly improving the emergency response capability and maintenance efficiency of power facilities.

[0033] Furthermore, in this embodiment, the inner surface of the first socket 310 and the outer surface of the first plug-in 320 are fitted together.

[0034] In this embodiment, the close fit between the first socket 310 and the first plug-in 320 achieves precise alignment and stable connection of the connecting components. Friction exists between the first socket 310 and the first plug-in 320, which restricts axial movement between the first flange 100 and the second flange 200. Specifically, the inner surface of the first socket 310 and the outer surface of the first plug-in 320 are tightly fitted together, forming a mechanical interlocking structure. This structure not only improves the overall rigidity of the connecting components but also effectively reduces safety hazards caused by unstable connections. When the first plug-in 320 is inserted into the first socket 310, the tight fit ensures the accuracy and stability of the connection. Furthermore, this anti-detachment pin structure further enhances the safety performance of the connection. In practical applications, this close fit eliminates the need for additional fasteners or complex hole-aligning operations, simplifying the assembly process and improving work efficiency. In addition, due to the direct interlocking of the plug-in and socket, the stress distribution at the connection point is more uniform, which helps extend the service life of the power repair tower flange. In summary, the fitting arrangement of the first socket 310 and the first plug 320 is one of the key technical points for achieving fast, safe and convenient connection in this invention, and it plays a vital role in the connection process.

[0035] Furthermore, in this embodiment, there are multiple first sockets 310, which are arranged circumferentially along the first flange 100 or the second flange 200; there are multiple first plugs 320, which are arranged circumferentially along the first flange 100 or the second flange 200; the multiple first sockets 310 and the multiple first plugs 320 are configured in a one-to-one correspondence, and each first socket 310 is plugged into and connected to the corresponding first plug 320.

[0036] Preferably, a plurality of first insertion holes 310 are evenly arranged along the circumference of the first flange 100 or the second flange 200; a plurality of first inserts 320 are evenly arranged along the circumference of the first flange 100 or the second flange 200.

[0037] In this embodiment, the connection between the first flange 100 and the second flange 200 is achieved through multiple first insertion holes 310 and multiple first inserts 320 arranged circumferentially. These components are evenly distributed and aligned along the circumference of the flange, forming a one-to-one corresponding insertion structure. When the first flange 100 and the second flange 200 are mated, the first inserts 320 automatically embed into the corresponding first insertion holes 310, forming a preliminary mechanical engagement, ensuring the stability and safety of the flange connection. This multi-point distributed connection mechanism can significantly improve the strength and support capacity of the connection area without adding extra burden, especially performing excellently when bearing longitudinal and lateral loads. In addition, this connection method simplifies the assembly process, avoids cumbersome bolt alignment and tightening, greatly improves construction efficiency, and also facilitates subsequent disassembly and maintenance. By setting inserts and insertion holes on the outer edge of the flange, not only is rapid positioning and engagement achieved, but also, through pin fixing, an effective anti-detachment structure is formed, ensuring the reliability and durability of the power repair tower in complex environments.

[0038] Furthermore, in this embodiment, as Figure 3 and Figure 4 As shown, the outer diameter of the first flange 100 is larger than the outer diameter of the second flange 200. The second insertion part 400 includes: a second insertion hole 410 and a second insert 420. The second insertion hole 410 is opened on the side wall of the second flange 200, and the axis of the second insertion hole 410 is arranged radially along the second flange 200. The first flange 100 is provided with a connecting part 110, and a first through hole 111 is opened on the connecting part 110. The first through hole 111 and the second insertion hole 410 are connected by the second insert 420.

[0039] In this embodiment, the outer diameter of the first flange 100 is designed to be larger than that of the second flange 200 to ensure stability and guidance during docking. The second insertion portion 400 includes a second insertion hole 410 and a second insert 420. The second insertion hole 410 is radially disposed on the side wall of the second flange 200, while the connecting portion 110 of the first flange 100 has a first through hole 111 corresponding to the second insertion hole 410. During the tower section docking process, the second insertion hole 410 and the first through hole 111 are precisely aligned and connected by the second insert 420. This design not only achieves rapid positioning and locking of the flange, but also avoids reliance on a large number of bolts, significantly improving construction efficiency. The combination of the pin and the through hole creates a locking mechanism at multiple points, ensuring the reliability and safety of the flange connection. Simultaneously, the interlocking structure formed by the first socket 310 and the first insert 320, along with the pin anti-detachment structure formed by the second socket 410, the second insert 420, and the connecting part 110, work synergistically to further enhance the strength of the connection, ensuring the stability and service life of the tower in harsh environments. Overall, this connection method simplifies the construction process, reduces the risks of high-altitude operations, and improves the assembly and disassembly speed of the modular power repair tower, making it suitable for rapid deployment and adjustment in emergency repair scenarios.

[0040] Furthermore, in this embodiment, there are multiple second sockets 410, which are arranged circumferentially along the second flange 200; there are multiple connecting parts 110, which are arranged circumferentially along the first flange 100, and the multiple connecting parts 110 and the multiple second sockets 410 are arranged in a one-to-one correspondence; there are multiple second plugs 420, which are arranged in a one-to-one correspondence with the multiple second sockets 410, and each second socket 410 is connected to the first through hole of the corresponding connecting part 110 through the second plug 420.

[0041] Preferably, a plurality of second insertion holes 410 are evenly arranged along the circumference of the second flange 200; a plurality of connecting parts 110 are evenly arranged along the circumference of the first flange 100. The uniform arrangement ensures that the first flange 100 and the second flange 200 are subjected to uniform stress, thereby improving the stability and safety of the connection.

[0042] In this embodiment, the second flange 200 is provided with multiple second insertion holes 410 circumferentially, and the first flange 100 is provided with multiple connecting parts 110 circumferentially, with each corresponding to the other. Multiple second inserts 420 correspond one-to-one with the second insertion holes 410, connecting the first through hole and the second insertion hole 410 of the corresponding connecting part 110 through the second insert 420. This design enables multi-point positioning and stable connection of flanges in adjacent tower sections, avoiding the instability that may result from single-point connections. The use of inserts and through holes on the outer edge of the flange allows for rapid fixing after tower section alignment, significantly improving construction efficiency. Simultaneously, the multi-point positioning and locking design enhances the strength and stability of the flange connection, ensuring the tower remains stable even under severe wind conditions. Furthermore, the convenience of this connection method is also reflected in disassembly; the flange can be quickly disassembled without complex tools, facilitating tower maintenance and repair.

[0043] Furthermore, a pressure detection element is provided at the end of the second plug-in 420 near the second flange 200. The pressure detection element is electrically connected to the remote control system and transmits the pressure data it detects to the remote control system. When the pressure difference transmitted to the remote control system by each pressure detection element is within a preset value, it can be determined that each second plug-in 420 is under uniform stress and the second plug-in 420 is locked in place. Specifically, the pressure detection element is a strain gauge.

[0044] In this embodiment, a pressure detection element is provided at the end of the second plug-in 420 near the second flange 200. The pressure detection element transmits the pressure data it detects to the remote control system, which can accurately determine whether the second plug-in 420 is installed in place. This not only improves the efficiency of the flange connection, but also makes the flange connection safer and more reliable.

[0045] Furthermore, in this embodiment, the second socket 410 and the second plug-in 420 are interference-fitted.

[0046] In this embodiment, when the second socket 410 and the second plug-in 420 are connected by an interference fit, this connection method ensures a tight fit and strength between the two. An interference fit is a mechanical connection method that utilizes the elastic deformation of the material to achieve a secure connection by making the diameter of the plug-in slightly larger than the inner diameter of the socket. In the quick connection method of the power repair tower flange, this design not only enhances the stability of the connection but also effectively prevents the connection from loosening under external forces, thereby improving the overall safety and structural reliability of the repair tower. The effect of the interference fit is that it achieves a firm connection between the pin assembly and the flange without additional fasteners, simplifying the assembly process and improving construction efficiency. At the same time, the repeated disassembly and assembly characteristic of the interference fit allows the repair tower to maintain good connection performance after multiple uses, extending the service life of the equipment and reducing maintenance costs. In specific applications, the interference fit between the second socket 410 and the second plug-in 420 can also effectively seal the connection, reducing the impact of external environmental factors on the flange connection, further ensuring the stable operation of the power repair tower in harsh environments. Of course, this interference fit method also has broad application prospects in other prefabricated structures that require quick, stable, and reusable assembly and disassembly.

[0047] Furthermore, in this embodiment, the connecting portion 110 of the first flange 100 is fitted to the side wall of the second flange 200.

[0048] In this embodiment, the connecting portion 110 of the first flange 100 is fitted against the sidewall of the second flange 200, creating direct friction between them. This not only restricts radial movement between the first flange 100 and the second flange 200 but also restricts axial movement between them. This design aims to optimize the connection stability and ease of assembly and disassembly between the flanges. The precise fit between the connecting portion 110 and the sidewall allows for rapid positioning of the upper and lower flanges during docking, avoiding the cumbersome hole-fixing required in traditional bolted connections and significantly improving construction efficiency. The fitted structure between the connecting portion and the sidewall also ensures the strength of the connection area, enhancing the overall structural stability. Furthermore, this design allows for flange assembly and disassembly without bolts, preventing wear on the flange holes caused by frequent bolt removal and extending the flange's service life. It also reduces the complexity and risk of high-altitude operations, enabling rapid and safe tower section connection and disassembly. In practical applications, this improvement is not only applicable to the splicing of tower sections in power repair towers, but can also be widely used in prefabricated steel structures that require rapid assembly and disassembly, demonstrating its unique advantages in emergency repair and modular construction scenarios. Of course, in other embodiments not shown, this fitting structure can be further optimized, for example, by increasing the friction coefficient of the contact surfaces and introducing auxiliary positioning devices to improve the reliability of the connection and the ease of assembly and disassembly.

[0049] Furthermore, in this embodiment, the second insertion hole 410 is opened on the side wall of the second flange 200 away from the first flange 100; the first through hole 111 is opened on the side of the connecting part 110 away from the first flange 100.

[0050] In this embodiment, the second insertion hole 410 is located on the side wall of the second flange 200 away from the first flange 100, while the first through hole 111 is located on the side of the connecting part 110 away from the first flange 100. This structural design ensures that when the upper and lower flanges are mated, the second insertion hole 410 and the first through hole 111 can be accurately aligned, facilitating the insertion of the second plug 420 and thus quickly locking the flanges together. After the second plug 420 is inserted, it not only fixes the first flange 100 and the second flange 200, but also further enhances the stability of the connection through the anti-detachment function of the second plug 420. Overall, this connection method initially positions the tower section through the mechanical engagement of the first insertion hole 310 and the second plug 420, and then locks it using the cooperation of the second insertion hole 410 and the second plug 420, achieving a fast and safe connection without bolts, significantly improving the efficiency and reliability of power repair tower section connections. When the second flange 200 is connected below the first flange 100, the second insertion hole 410 is opened on the side wall of the second flange 200 away from the first flange 100, while the first through hole 111 is opened on the side of the connecting part 110 away from the first flange 100. In this way, after the second insertion hole 410 and the first through hole 111 are connected by the second plug 420, they can support the entire weight of the second flange 200 and improve the overall connection strength.

[0051] Furthermore, in this embodiment, the first flange 100 and the second flange 200 are coaxially arranged; and / or, both the first flange 100 and the second flange 200 are annular structures.

[0052] In this embodiment, the first flange 100 and the second flange 200 are coaxially arranged, and both are annular structures. This design ensures precise alignment and stable connection during the flange connection process. By setting matching first inserts 320 and first insertion holes 310 on the relative contact surfaces of the upper and lower flanges, and by setting a second insert 420 and a first through hole 11 on the outer edge of the flange, a rapid and secure connection between power repair tower sections is achieved. The convex-concave interlocking structure utilizes the mechanical interlocking principle to ensure initial positioning and tight interlocking when the tower sections are connected, effectively transferring the longitudinal and transverse loads of the tower body and improving the strength of the connection area. The pin anti-detachment structure further enhances the reliability of the connection. By inserting the second insert 420, the connection part is locked, preventing the tower section from accidentally falling off under the action of external forces such as wind load or earthquake. This connection method not only significantly improves construction efficiency, reduces high-altitude operation time, and reduces safety risks, but also facilitates repeated disassembly and assembly, reduces wear on the flange hole walls, and extends the service life of the flange. The overall design simplifies the connection process of power repair tower sections, making it suitable for emergency repair scenarios and improving the flexibility and response speed of repair operations.

[0053] Furthermore, the second socket 410 is located on the centerline between two adjacent first plugs 320, a design that can improve the connection strength and connection density along the circumference of the second flange 200.

[0054] During the assembly of the power emergency repair tower, the tower section is first hoisted to the designated position, aligning the first flange 100 and the second flange 200 along the axial direction. At this point, the first insertion holes 310 and the first inserts 320 on the two flanges begin to interlock, achieving initial positioning through mechanical fitting. Subsequently, the first insert 320 automatically embeds into the corresponding first insertion hole 310, forming a multi-point mechanical interlocking structure, further securing the flange connection. In the second stage of flange connection, the operator inserts the second insert 420 into the pre-aligned second insertion hole 410 and the first through hole 111. This action not only strengthens the radial connection between the flanges but also ensures a tight fit between the second insertion hole 410 and the second insert 420 through an interference fit, forming an anti-detachment structure and completing the rapid and stable connection of the tower section. The entire process eliminates the need for the complex operation of traditional bolts, significantly improving construction efficiency while ensuring the strength and stability of the connection, making it suitable for rapid emergency repairs and the construction of modular power towers.

[0055] This invention provides a flange connection structure that enables rapid axial alignment and connection of the flange via a first insertion part 300, while a second insertion part 400 ensures radial safety locking. This significantly simplifies the connection process between power repair tower sections and improves construction efficiency. Compared to traditional bolted connections, this solution reduces the complexity and danger of high-altitude operations. Simultaneously, the mechanical engagement and anti-disengagement pin design ensure the stability and reliability of the connection, maintaining good performance even under harsh environmental conditions. Furthermore, this connection method supports multiple disassembly and assembly without compromising connection quality due to repeated use, extending the service life of the repair tower and reducing maintenance costs. It is particularly suitable for emergency repairs and rapid deployment scenarios.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A flange connection structure, characterized in that, It includes a first flange (100), a second flange (200), a first plug-in part (300), and a second plug-in part (400); The first flange (100) and the second flange (200) are connected by a first plug-in portion (300) along a first preset direction, the first preset direction being parallel to the axis of the first flange (100) and the axis of the second flange (200); The first flange (100) and the second flange (200) are connected by a second plug-in portion (400) along a second preset direction, which is radially arranged along the first flange (100) and the second flange (200).

2. The flange connection structure according to claim 1, characterized in that, The first connector (300) includes: A first socket (310) and a first plug-in (320) are connected by insertion; one of the first socket (310) and the first plug-in (320) is provided on the first flange (100), and the other of the first socket (310) and the first plug-in (320) is provided on the second flange (200).

3. The flange connection structure according to claim 2, characterized in that, The inner surface of the first socket (310) and the outer surface of the first plug (320) are fitted together.

4. The flange connection structure according to claim 2, characterized in that, There are multiple first sockets (310), and the multiple first sockets (310) are arranged circumferentially along the first flange (100) or the second flange (200); there are multiple first plugs (320), and the multiple first plugs (320) are arranged circumferentially along the first flange (100) or the second flange (200); the multiple first sockets (310) and the multiple first plugs (320) are set in a one-to-one correspondence, and each first socket (310) is plugged into and connected to the corresponding first plug (320).

5. The flange connection structure according to claim 1, characterized in that, The outer diameter of the first flange (100) is larger than the outer diameter of the second flange (200), and the second insertion portion (400) includes: The second socket (410) and the second plug-in (420) are provided. The second socket (410) is opened on the side wall of the second flange (200), and the axis of the second socket (410) is arranged radially along the second flange (200). The first flange (100) is provided with a connecting part (110), and the connecting part (110) is provided with a first through hole (111). The first through hole (111) and the second socket (410) are connected by the second plug-in (420).

6. The flange connection structure according to claim 5, characterized in that, There are multiple second sockets (410), which are arranged around the second flange (200); there are multiple connecting parts (110), which are arranged around the first flange (100), and the multiple connecting parts (110) and the multiple second sockets (410) are arranged in a one-to-one correspondence; there are multiple second plugs (420), which are arranged in a one-to-one correspondence with the multiple second sockets (410), and each second socket (410) is connected to the first through hole of the corresponding connecting part (110) through the second plug (420).

7. The flange connection structure according to claim 5, characterized in that, The second socket (410) is interference-fitted with the second plug (420).

8. The flange connection structure according to claim 5, characterized in that, The connecting portion (110) of the first flange (100) is fitted to the side wall of the second flange (200).

9. The flange connection structure according to claim 5, characterized in that, The second insertion hole (410) is located on the side wall of the second flange (200) away from the first flange (100); the first through hole (111) is located on the side of the connection part (110) away from the first flange (100).

10. The flange connection structure according to claim 1, characterized in that, The first flange (100) and the second flange (200) are coaxially arranged; and / or, the first flange (100) and the second flange (200) are both annular structures.

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