Flange connection structure and split tower drum connection structure

Abstract

The application discloses a flange connecting structure and a split type tower drum connecting structure, relates to the field of mechanical connecting structures, and particularly discloses the flange connecting structure and the split type tower drum connecting structure. The flange connecting structure comprises two groups of flange plates arranged in parallel, the rear end face of the flange plate is used for fixed connection with a workpiece, a plurality of groups of locking plates are arranged in parallel along the length direction of the flange plate, the locking plate is in the shape of an I or C, the locking plate is clamped outside the two groups of flange plates, the limiting arms at the two ends of the locking plate can limit the increase of the spacing between the two groups of flange plates, and a sealing gasket is fixed with the locking plate. The flange connecting structure and the split type tower drum connecting structure are provided with the locking plates between the flange plates, the clamping mode is used to replace the traditional bolt and rivet structure, the cross-sectional area of the locking plates is increased relative to the bolt and the rivet, the shearing resistance is improved, the fracture probability is reduced, the sealing gasket is arranged at the split part, the traditional glass cement is replaced, and the water seepage probability in the operation process is reduced.

Description

Technical Field

[0001] This invention relates to the field of mechanical connection structure technology, and more specifically, to a flange connection structure. Furthermore, this invention also relates to a segmented tower connection structure including the above-mentioned flange connection structure. Background Technology

[0002] Workpieces with a large surface area are often assembled from multiple plates during production, and their joints are usually fixed by welding or flange connection.

[0003] Taking the wind power industry as an example, the longitudinal flange connections of segmented towers in the current wind power industry are usually connected by bolts or rivets. There is a large gap between the two longitudinal flanges, which causes the bolts or rivets to be subjected to great shear force, posing a risk of breakage. In addition, the original waterproofing measures at the segmentation points were to use waterproof adhesive, which often resulted in water seepage at the segmentation points after a period of operation. Moreover, the existing technology requires that the support plates between the longitudinal flange plates on both sides be at the same height. If the heights are inconsistent, they will not provide support. Furthermore, the support plates must be fully welded to the tower, and the flange plates also need to be welded to the tower. The welds are relatively dense, which can easily lead to stress concentration and tower fatigue.

[0004] In summary, how to provide a flange connection structure and a segmented tower connection structure that can avoid flange failure and tower fatigue, while reducing the probability of water seepage at the segmentation points, is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a flange connection structure that uses a locking plate between flange plates to replace the traditional bolt and rivet structure through a snap-fit ​​connection. Its cross-sectional area is increased compared to bolts and rivets, which improves shear resistance and reduces the probability of breakage. Furthermore, it uses a sealing gasket at the segmentation point to replace the traditional glass glue, which reduces the probability of water leakage during operation.

[0006] Another objective of this invention is to provide a segmented tower connection structure including the above-described flange connection structure, which can solve the same technical problem and achieve the same objective.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A flange connection structure, comprising:

[0009] Two sets of flange plates are arranged in parallel, and the rear end face of the flange plates is used for fixed connection with the workpiece;

[0010] Several sets of locking plates are arranged side by side along the length of the flange plate. The locking plates are I-shaped or C-shaped. The locking plates are snapped onto the outside of two sets of flange plates. The limiting arms at both ends of the locking plates can limit the increase of the distance between the two sets of flange plates.

[0011] A sealing gasket fixed to the locking plate is used to cover the joint of the workpiece to achieve a seal.

[0012] Preferably, a pressing block is fixedly provided at the middle position of the locking plate, and the sealing gasket is fixedly connected to the pressing block; the pressing block is used to press the sealing gasket to achieve contact sealing between the sealing gasket and the workpiece.

[0013] Preferably, the extrusion block is positioned between the two sets of flange plates, and the end of the extrusion block abuts against the flange plate to prevent the flange plates on both sides from getting close to each other.

[0014] Preferably, a plurality of support plates are provided between the two sets of flange plates, the ends of the support plates abutting against the flange plates to prevent the flange plates on both sides from getting close to each other.

[0015] Preferably, the support plate is fixedly connected to the flange plate on only one side, and the rear end face of the support plate on the corresponding side is fixedly connected to the workpiece.

[0016] Preferably, the support plate abuts against the flange plate on the other side, and the rear end face of the support plate on the corresponding side is in close contact with the workpiece.

[0017] Preferably, the other end of the support plate abuts against the flange plate, and an auxiliary sealing gasket is provided on the rear end face of the corresponding side of the support plate, the auxiliary sealing gasket being used to seal the contacting workpiece.

[0018] Preferably, the front end face of the flange plate is provided with a connecting fixing plate by locking bolts. The connecting fixing plate abuts against the front end face of the locking plate to restrict the locking plate from moving away from the workpiece.

[0019] Preferably, the front end face of the flange plate is provided with several sets of fixing grooves, and the locking plate is engaged in the fixing grooves.

[0020] Preferably, the opening direction of the fixing groove is the front end face of the flange plate, and the front end face of the locking plate is outside the opening of the fixing groove. The front end face of the flange plate is provided with a connecting fixing plate by locking bolts. The connecting fixing plate abuts against the front end face of the locking plate to restrict the locking plate from moving away from the workpiece.

[0021] A segmented tower connection structure includes the aforementioned flange connection structure, wherein the rear end face of the flange plate is fixedly connected to the edge of the side wall of the segmented tower.

[0022] The flange connection structure provided by this invention has at least the following advantages compared to the prior art:

[0023] 1. The locking plate is installed with the flange plate by snap-fit. Its working principle is that the end limiting arm abuts against the side end face of the flange plate, preventing the two sets of flange plates from moving away from each other. The force between the limiting arm and the side end face of the flange plate is friction. When the two sets of workpieces are misaligned, that is, when the two workpieces are not coplanar, traditional connectors will experience shear stress. However, with the locking plate structure, the friction between the locking plate and the limiting arm and the side end face of the flange plate will be offset, thereby reducing the shear stress borne by the locking plate. At the same time, the cross-sectional area of ​​the locking plate itself can be increased according to design requirements to ensure its pull-out resistance, thereby reducing the probability of connection structure failure. Moreover, the maintenance difficulty and frequency are reduced compared to traditional equipment throughout the entire service life.

[0024] 2. By adding sealing gaskets at the joints of the workpieces, the sealing performance at the joints is improved, which solves the problem of water seepage into the inner wall of the tower that requires regular maintenance.

[0025] The segmented tower connection structure provided by the present invention includes the above-mentioned flange connection structure, which can solve the same technical problem and has the same beneficial effect, and will not be described in detail here. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a specific embodiment provided by the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the two flange assemblies combined according to the present invention;

[0029] Figure 3 This is a schematic diagram of the rear end face structure of the two flange assemblies combined according to the present invention.

[0030] Figure 4 This is a schematic diagram of the flange assembly structure on the left side provided by the present invention;

[0031] Figure 5This is a schematic diagram of the flange assembly structure on the right side provided by the present invention;

[0032] Figure 6 This is a schematic diagram of the locking block assembly structure provided by the present invention;

[0033] Figure 7 This is a schematic diagram of the connecting and fixing plate structure provided by the present invention.

[0034] Figures 1-7 middle:

[0035] 1. Flange assembly; 101. Flange plate; 1011. Fixing groove; 1012. Threaded hole; 102. Support plate; 2. Locking block assembly; 201. Locking plate; 2011. Limiting arm; 202. Pressing block; 203. Sealing gasket; 3. Connecting fixing plate; 301. Through hole; 4. Locking bolt. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The core of this invention is to provide a flange connection structure in which a locking plate is set between the flange plates, and a snap-fit ​​method is used to replace the traditional bolt and rivet structure. Its cross-sectional area is increased compared with bolts and rivets, which improves shear resistance and reduces the probability of breakage. In addition, the addition of sealing gaskets at the joints replaces the traditional glass glue, which reduces the probability of water leakage during operation.

[0038] Another core aspect of this invention is to provide a segmented tower connection structure that includes the aforementioned flange connection structure, which can solve the same technical problem and achieve the same objective.

[0039] Please refer to Figures 1-7 , Figure 1 A flange connection structure includes:

[0040] Two sets of flange plates 101 are arranged in parallel, and the rear end face of the flange plate 101 is used for fixed connection with the workpiece.

[0041] Several sets of locking plates 201 are arranged in parallel along the length of the flange plate 101. The locking plates 201 have an I-shaped or C-shaped structure. The locking plates 201 are snapped onto the outside of the two sets of flange plates 101. The limiting arms 2011 at both ends of the locking plates 201 can limit the increase of the distance between the two sets of flange plates 101.

[0042] The sealing gasket 203, which is fixed to the locking plate 201, is used to cover the joint of the workpiece to achieve a seal.

[0043] Taking the use of fixing the longitudinal joint of the wind turbine tower as an example, two sets of flange plates 101 are arranged on both sides of the joint of the tower sections. Locking plates 201 are used to limit the two sets of flange plates 101 instead of traditional bolts or rivets. The structure of locking plates 201 can be I-shaped or C-shaped. It mainly relies on the limiting arm 2011 at its end to abut against the opposite surface of the two sets of flange plates 101, thereby limiting the maximum distance between the two sets of flange plates 101 and preventing the joint of the tower sections from increasing. Moreover, compared with bolts and rivets, locking plates 201 have a larger cross section and improved shear resistance. Compared with bolts, which require regular torque checks, their maintenance process is simpler. It is only necessary to check whether they have fallen off or broken.

[0044] Meanwhile, a sealing gasket 203 is set inside the locking plate 201. When the locking plate 201 and the flange plate 101 are snapped together, the working surface of the sealing gasket 203 can closely fit the inner surface of the tower section and cover the joint between the tower sections, thereby achieving a sealing effect at the joint and preventing external water seepage.

[0045] It is worth noting that the fixing method of the sealing gasket 203 and the locking plate 201 is not limited here. The preferred method is, but not limited to, pasting. In some embodiments, after the locking plate 201 is snapped into the flange plate 101, it can apply a certain compressive force to the sealing gasket 203, thereby causing the sealing gasket 203 to be deformed against the inner wall of the tower section, further improving the sealing performance at the joint.

[0046] like Figure 6 As shown, a pressing block 202 is fixedly installed in the middle of the locking plate 201, and the sealing gasket 203 is fixedly connected to the pressing block 202; the pressing block 202 is used to press the sealing gasket 203 to achieve a sealing contact between the sealing gasket 203 and the workpiece; the locking plate 201 and the pressing block 202 are a locking buckle assembly 2 integrally cast or welded, that is, by adding the pressing block 202 inside the locking plate 201, the pressing force of the locking plate 201 on the sealing gasket 203 is increased;

[0047] Meanwhile, in some embodiments, the cross-section of the compression block 202 is designed as a frustoconical shape, that is, the contact area between the compression block 202 and the locking plate 201 is smaller than the contact area between the compression block 202 and the sealing gasket 203. In other words, by increasing the compression block 202, the compression area between the locking plate 201 and the sealing gasket 203 is enlarged, so that a single locking plate 201 can cover a larger joint area.

[0048] Furthermore, in some embodiments, the pressing block 202 is positioned between the two sets of flange plates 101, and the end of the pressing block 202 abuts against the flange plate 101 to prevent the flange plates 101 on both sides from approaching each other. That is, in this embodiment, the length of the pressing block 202 is equal to the distance between the two sets of flange plates 101. After the locking buckle assembly 2 is engaged, the pressing block 202 is inserted into the gap between the two sets of flange plates 101, and the end abuts against the opposite surfaces of the two sets of flange plates 101, thereby preventing the two sets of flange plates 101 from approaching each other. Combined with the limiting arm 2011 of the locking plate 201, the two sets of flange plates 101 are prevented from moving away from each other, thereby achieving the purpose of using the locking buckle assembly 2 to limit the change in the distance between the two sets of flange plates 101. Compared with the traditional bolt connection, the connection through the locking buckle assembly 2 eliminates the need to worry about the decrease in bolt torque. It is only necessary to check whether it has fallen off or broken. The maintenance process is relatively simpler, and the maintenance frequency can be appropriately reduced.

[0049] However, if the length of the extrusion block 202 and the spacing between the two sets of flange plates 101 are set to be equal, it is necessary to ensure the welding accuracy of the flange plate 101 and the tower section, and to ensure the stability of the spacing between the two sets of flange plates 101. That is, the welding process needs to rely on the tooling template to ensure the welding accuracy. This process is mainly completed on the tower installation site, which increases the difficulty of operation.

[0050] Therefore, in some other embodiments, the length of the pressing block 202 is made smaller than the distance between the two sets of flange plates 101, and the end of the pressing block 202 no longer abuts against the flange plate 101 for support; instead, it is as follows: Figure 2 and Figure 3 As shown, several sets of support plates 102 are provided between the two sets of flange plates 101. The ends of the support plates 102 abut against the flange plates 101 to prevent the flange plates 101 on both sides from getting closer to each other. That is, the support plates 102 are added between the two sets of flange plates 101 to replace the pressing blocks 202 for support, preventing the distance between the two sets of flange plates 101 from decreasing. Combined with the limiting arm 2011 of the locking plate 201, the two sets of flange plates 101 are prevented from moving away from each other. Thus, the purpose of limiting the change of the distance between the two sets of flange plates 101 is achieved by using the locking block assembly 2 and the support plates 102 together.

[0051] In this method, the spacing between the two flange plates 101 will not affect the assembly of the locking block assembly 2, reducing the assembly difficulty of the locking block assembly 2. However, the spacing between the two flange plates 101 still needs to meet the installation requirements of the support plate 102. There are also various ways to fix the support plate 102, such as welding all contact surfaces of the support plate 102 with other components, or welding only some contact surfaces while other areas are in close contact. Simulation analysis found that if the support plate 102 is welded to all contact surfaces, stress concentration will occur due to too many welds at the joint, which will cause metal fatigue of the tower and affect the durability of the tower.

[0052] Therefore, in some embodiments, the support plate 102 is fixedly connected only to the flange plate 101 on one side, and the rear end face of the support plate 102 on the corresponding side is fixedly connected to the workpiece, such as... Figure 5 As shown, the right end face of the first support plate 102a is fixedly connected to the first flange plate 101a to form the flange assembly 1 on the right side. The preferred connection method is welding, such as... Figure 4 As shown, the left end face of the second support plate 102b is fixedly connected to the second flange plate 101b, forming the flange assembly 1 on the left side. The support plates 102 in the flange assemblies 1 on both sides are arranged crosswise, and the free ends of the support plates 102 abut against their corresponding flange plates 101, as shown. Figure 3 As shown;

[0053] During the design process, the spacing between the support plates 102 should be uniform to ensure that a good seal can be formed between the locking block assembly 2 and the workpiece after assembly. This also helps to ensure the design consistency of the locking block assembly 2. When replacement is required, the parts are highly interchangeable, thereby reducing maintenance costs.

[0054] like Figure 2 and Figure 5 As shown, the distance between the two sets of support plates 102 in the same flange assembly 1 is L3. After the assembly is completed, that is, after the support plates 102 in the two sets of flange assemblies 1 are arranged in a cross pattern, the distance between the two adjacent sets of support plates 102 is L2. At this time, L3 = 2 * L2 should be satisfied. At the same time, after the locking block assembly 2 is assembled, the side of the sealing gasket 203 should be able to contact and seal with the side wall of the support plate 102, so as to ensure that there is no sealing gap at the joint of the tower section.

[0055] In some embodiments, the support plate 102 abuts against the flange plate 101 on the other side, and the rear end face of the support plate 102 on the corresponding side is in close contact with the workpiece.

[0056] To ensure that the other end of the support plate 102 can make close contact with the workpiece to form a sealing surface, it is necessary to ensure the welding accuracy of the support plate 102 and the flange plate 101 within the same flange assembly 1. Specifically, the welding is performed after fixing with a backing plate fixture. This process can be carried out in the factory, which reduces the welding difficulty and improves the welding accuracy compared to welding on the tower installation site.

[0057] In other embodiments, in order to reduce the welding accuracy requirements of the support plate 102 and the flange plate 101 within the same flange assembly 1, the following scheme is adopted: the other end of the support plate 102 abuts against the flange plate 101, and an auxiliary sealing gasket is provided on the rear end face of the corresponding side of the support plate 102. The sealing gasket is used to seal with the contacting workpiece. By providing an auxiliary sealing gasket, the sealing is achieved by the compression deformation of the auxiliary sealing gasket, thereby reducing the welding accuracy requirements of the support plate 102 and the flange plate 101, and thus reducing the processing difficulty.

[0058] With the above-mentioned arrangement of the support plate 102, the welding length between the support plate 102 and the tower section can be reduced, the welding seam between the support plate 102 and the flange plate 101 on the other side can be eliminated, thereby reducing stress concentration at the joint of the workpiece, reducing metal fatigue of the tower, and improving the durability of the tower.

[0059] Generally, the locking plate 201 is snapped between two sets of flange plates 101, and the limiting arm 2011 at its end abuts against the outer wall of the flange plate 101, and there is a large friction between them. This friction can prevent the locking block assembly 2 from falling off and can provide extrusion force for the extrusion block 202 to extrude the sealing gasket 203. However, in some embodiments, the locking bolt 4 is used to fix the locking block assembly 2 separately to the flange plate 101 or the tower section. The axial direction of the locking bolt 4 is consistent with the direction of the extrusion force applied by the extrusion block 202, which further prevents the locking block assembly 2 from falling off and further ensures the stability of the extrusion force on the sealing gasket 203.

[0060] However, in other embodiments, such as Figure 1 As shown, a connecting fixing plate 3 is provided on the front end face of the flange plate 101 via locking bolts 4. The connecting fixing plate 3 abuts against the front end face of the locking plate 201 to limit the locking plate 201 from moving away from the workpiece. By adding the connecting fixing plate 3, multiple sets of locking block assemblies 2 can be synchronously fixed, and as shown... Figure 7 As shown, several sets of through holes 301 are provided on the surface of the connecting fixing plate 3 for fixing the locking bolts 4, so as to prevent the locking block assembly 2 from falling off due to the failure of a single locking bolt 4.

[0061] In some embodiments, the front end face of the flange plate 101 is provided with a plurality of fixing grooves 1011, and the locking plate 201 is engaged in the fixing grooves 1011; thereby limiting the relative positional relationship between the locking block assembly 2 and the flange plate 101, preventing the locking plate 201 from sliding along the length direction of the flange plate 101. Furthermore, for the I-shaped locking plate 201, when it is engaged in the fixing grooves 1011, both ends of its limiting arms 2011 can abut against the sides of the flange plate 101. Figure 1 As shown, this ensures that the force is evenly distributed at its ends, thereby improving its shear resistance.

[0062] Furthermore, the opening direction of the fixing groove 1011 is the front end face of the flange plate 101, and the front end face of the locking plate 201 is outside the opening of the fixing groove 1011. The front end face of the flange plate 101 is provided with a connecting fixing plate 3 by locking bolts 4. The connecting fixing plate 3 abuts against the front end face of the locking plate 201 to limit the locking plate 201 from moving away from the workpiece. The locking plate 201 is fixed and pre-tightened by the connecting fixing plate 3. Through the force transmission of the extrusion block 202, the sealing gasket 203 has an initial pre-tightening force, which fits tightly against the inner wall of the tower, improving the sealing performance. In this process, since the front end face of the locking plate 201 protrudes from the fixing groove 1011, the extrusion of the locking plate 201 by the connecting fixing plate 3 is not interfered with by the flange plate 101. In addition, as Figure 2 As shown, on the surface of the flange plate 101, the fixing groove 1011 and the threaded hole 1012 for fixing the locking bolt 4 are arranged at intervals. That is, each set of fixing groove 1011 has an independent threaded hole 1012 on both sides for fixing the locking bolt 4. Thus, the squeezing force on the inner wall of the tower can be adjusted for each locking block assembly 2, that is, the screwing depth of the locking bolt 4 on both sides can be adjusted, thereby eliminating the problem of poor sealing caused by insufficient precision during welding or assembly.

[0063] In other embodiments, the thickness of the locking plate 201 is less than the depth of the fixing groove 1011. That is, after the connecting fixing plate 3 is fixed, the locking plate 201 still has a forward and backward displacement in the fixing groove 1011. During this process, the sealing gasket 203 will be squeezed. This solves the problem that when the tower sections on both sides are misaligned, the locking buckle assembly 2 can undergo a slight relative torsion with the flange assembly 1 instead of being subjected to a large shear force and breaking, thus further improving its durability.

[0064] In addition to the flange connection structures disclosed in the above embodiments, the present invention also provides a segmented tower connection structure including the above flange connection structure, wherein the rear end face of the flange plate 101 is fixedly connected to the edge of the segmented side wall of the tower. The structures of other parts of the segmented tower connection structure are described in the prior art and will not be repeated here.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0066] The flange connection structure provided by this invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A flange connection structure, characterized in that, include: Two sets of flange plates (101) are arranged in parallel, and the rear end face of the flange plate (101) is used for fixed connection with the workpiece. A number of locking plates (201) are arranged side by side along the length of the flange plate (101). The locking plates (201) are I-shaped or C-shaped. The locking plates (201) are snapped onto the outside of the two sets of flange plates (101). The limiting arms (2011) at both ends of the locking plates (201) can limit the increase of the distance between the two sets of flange plates (101). A sealing gasket (203) is fixed to the locking plate (201), the sealing gasket (203) is used to cover the joint of the workpiece to achieve a seal; The flange plate (101) has a number of fixing grooves (1011) on its front end face. The locking plate (201) is snapped into the fixing groove (1011). The opening direction of the fixing groove (1011) is the front end face of the flange plate (101), and the front end face of the locking plate (201) is outside the opening of the fixing groove (1011). The front end face of the flange plate (101) is provided with a connecting fixing plate (3) by locking bolts (4). The connecting fixing plate (3) abuts against the front end face of the locking plate (201) to restrict the locking plate (201) from moving away from the workpiece. The thickness of the locking plate (201) is less than the groove depth of the fixing groove (1011). After the connecting fixing plate (3) is fixed, the locking plate (201) has a forward and backward displacement in the fixing groove (1011).

2. The flange connection structure according to claim 1, characterized in that, A pressing block (202) is fixedly provided in the middle of the locking plate (201), and the sealing gasket (203) is fixedly connected to the pressing block (202); the pressing block (202) is used to press the sealing gasket (203) to achieve the sealing gasket (203) and the workpiece to make contact and seal.

3. The flange connection structure according to claim 2, characterized in that, The extrusion block (202) is positioned between the two sets of flange plates (101), and the end of the extrusion block (202) abuts against the flange plate (101) to prevent the flange plates (101) on both sides from getting close to each other.

4. The flange connection structure according to claim 1, characterized in that, Several sets of support plates (102) are provided between the two sets of flange plates (101), and the ends of the support plates (102) abut against the flange plates (101) to prevent the flange plates (101) on both sides from getting close to each other.

5. The flange connection structure according to claim 4, characterized in that, The support plate (102) is fixedly connected to the flange plate (101) on one side only, and the rear end face of the support plate (102) on the corresponding side is fixedly connected to the workpiece.

6. The flange connection structure according to claim 5, characterized in that, The support plate (102) abuts against the flange plate (101) on the other side, and the rear end face of the support plate (102) on the corresponding side is in close contact with the workpiece.

7. The flange connection structure according to claim 6, characterized in that, The other side of the support plate (102) abuts against the flange plate (101), and an auxiliary sealing gasket is provided on the rear end face of the corresponding side of the support plate (102), which is used to seal the contacting workpiece.

8. A segmented tower connection structure, characterized in that, The flange connection structure includes any one of claims 1-7, wherein the rear end face of the flange plate (101) is fixedly connected to the edge of the tower section sidewall.

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