Tower drum structure and fan system

Abstract

The invention relates to the technical field of wind power towers, and discloses a tower structure and a fan system. The tower barrel structure is used for the fan system and comprises segmented tower barrels and connecting pieces, each segmented tower barrel comprises a tower barrel piece and a plurality of longitudinal stiffening ribs, the longitudinal stiffening ribs are arranged on the inner wall of the tower barrel piece at intervals in the circumferential direction of the tower barrel piece, the number of the segmented tower barrels is multiple, at least two segmented tower barrels are sequentially connected to form segmented tower barrels, and the number of the segmented tower barrels is at least two; every two adjacent sectional tower barrels are connected through a connecting piece. The longitudinal stiffening ribs are arranged on the inner wall of the tower drum part, so that the structural strength of the sectional tower drum is improved, the thickness of the tower drum part is reduced, and the manufacturing and mounting cost of the tower drum structure is saved.

Description

Technical Field

[0001] This invention relates to the field of wind turbine tower technology, specifically to a tower structure and wind turbine system. Background Technology

[0002] The tower structure is the supporting structure of a wind turbine generator, made of rolled steel plates, used to support the weight of the unit and convert wind energy at high altitudes into electrical energy. As the units move towards the multi-megawatt range, the tower structure continues to grow taller, and the demand for the rigidity and strength of the tower structure is also increasing.

[0003] In existing technologies, the stiffness and strength of the tower structure are improved by increasing the diameter of the tower structure and the thickness of the steel plate.

[0004] However, the above methods lead to an increase in the amount of steel used in the tower structure, resulting in higher manufacturing and installation costs. Summary of the Invention

[0005] This invention provides a tower structure and a wind turbine system to solve the problem of high manufacturing and installation costs of tower structures in the prior art.

[0006] In a first aspect, the present invention provides a tower structure for a wind turbine system, comprising: a segmented tower, the segmented tower including a tower member and a plurality of longitudinal stiffening ribs, the plurality of longitudinal stiffening ribs being spaced apart along the circumference of the tower member on the inner wall of the tower member, the segmented tower being a plurality of segments, at least two of the segmented towers being sequentially connected to form a sectioned tower, the sectioned tower being at least two; and a connector, adjacent two sectioned towers being connected by the connector.

[0007] Based on the aforementioned technical methods, multiple longitudinal stiffening ribs are incorporated within the tower components, improving the rigidity and strength of the segmented tower without increasing the thickness of the components, thus reducing manufacturing costs. Furthermore, dividing the tower structure into multiple segments, each formed by connecting at least two segments, allows for efficient transportation and installation. The segments can be transported to the installation site and then assembled using connectors. The shorter length of the segments eliminates the need for specialized transport, further reducing transportation costs. Simultaneously, compared to manufacturing complete tower structures directly, batch production of segmented towers improves manufacturing efficiency, reduces operational complexity, increases the yield of segmented towers, thereby reducing material waste and saving on manufacturing costs.

[0008] Therefore, the tower structure provided in this application saves on the manufacturing and installation costs of the tower structure in terms of material consumption, transportation costs, and manufacturing costs.

[0009] In one optional embodiment, the longitudinal stiffening rib is a channel steel; the channel steel extends axially along the tower component, the channel steel includes a bottom wall and two side walls connected to both sides of the bottom wall, the ends of the two side walls are connected to the inner wall of the tower component; along the circumference of the tower component, the side walls of two adjacent channel steels are arranged opposite to each other, and there is a gap between the side walls of two adjacent channel steels.

[0010] In this way, the channel steel forms longitudinal stiffeners, and under the same weight, the section modulus of the channel steel is larger, which is conducive to further reducing the wall thickness of the tower components and saving the manufacturing cost of the tower structure. Fixing the two side wall ends of the channel steel to the inner wall of the tower component by welding helps to reduce the deformation generated during the welding of the longitudinal stiffeners, reduce residual stress, and improve the fatigue life of the segmented tower.

[0011] In one optional embodiment, the bottom wall of the channel steel, the two side walls of the channel steel, and the inner wall of the tower component together form a receiving cavity, which is filled with concrete.

[0012] Thus, filling the cavity with concrete helps to improve the bending stiffness and fatigue life of the channel steel, thereby enhancing the supporting role of the channel steel and improving the overall structural strength of the tower structure. This also helps to further reduce the thickness of the tower components and save on the manufacturing cost of the tower structure.

[0013] In one optional embodiment, the segmented tower further includes flange plates; the flange plates are located at both ends opposite to the tower component along its own axial direction and cover the end faces of the longitudinal stiffening ribs; the flange plates have a plurality of bolt holes, the bolt holes corresponding to the gaps between two adjacent longitudinal stiffening ribs.

[0014] Thus, after the flange plate is installed, the cavity formed by the tower components and the channel steel is closed. If the bolt holes are set to correspond to the cavity, there will be no operating space for installing bolts. Therefore, the bolt holes need to be set to correspond to the gap between the side walls of two adjacent channel steels. This gap provides sufficient operating space for the installers, allowing them to insert and tighten bolts at the gap, which facilitates construction.

[0015] In one alternative embodiment, two adjacent sections of the same segmented tower are bolted together by the flange plate.

[0016] Thus, when the number of channel steels in different sections of the same tower section is consistent, the number of bolt holes on the flange plates of different sections is also consistent. Therefore, the position of the bolt holes can be adjusted appropriately to ensure that the bolt holes on adjacent flange plates correspond one-to-one, and the bolts are passed through the two adjacent flange plates to complete the connection of the tower sections. This enables rapid assembly of the tower sections, simplifies the operation, and shortens the installation time of the tower structure.

[0017] In one alternative implementation, the inner diameter of the segmented tower decreases sequentially from the wind turbine foundation to the wind turbine steel tower of the wind turbine system.

[0018] Thus, the tower structure is conical in shape, with the inner diameter of the tower sections closer to the wind turbine foundation being larger, which can provide a larger section modulus and ensure that the bottom of the tower structure can withstand large bending moments, thus ensuring the overall stability of the wind turbine system. In addition, the inner diameter of the tower sections closer to the wind turbine steel tower is smaller, which can meet the lower stress at the top of the tower structure and reduce the wind-receiving area at the top of the tower structure, further improving the stability of the tower structure.

[0019] In one alternative implementation, between any two of the segmented tower sections, the cross-sectional area of ​​the channel steel of the segmented tower section closer to the wind turbine foundation of the wind turbine system is greater than the cross-sectional area of ​​the channel steel of the segmented tower section closer to the wind turbine steel tower of the wind turbine system; and / or, the number of channel steels of the segmented tower section closer to the wind turbine foundation is greater than the number of channel steels of the segmented tower section closer to the wind turbine steel tower.

[0020] Therefore, the thickness of the channel steel must correspond to the thickness of the tower components, and the ratio between the two must be controlled within a certain range to ensure the strengthening effect of the channel steel while avoiding welding overload. Furthermore, since there is a gap between the sidewalls of two adjacent channel steels, when the inner diameter of the segmented tower components decreases, the number of channel steels in the corresponding segmented tower can be reduced to ensure sufficient installation space for the channel steels and prevent adjacent channel steels from contacting each other.

[0021] In one optional embodiment, the connector includes a first mounting surface and a second mounting surface, which are respectively connected to the flange plates of the segmented tower sections of two adjacent segmented tower sections.

[0022] Thus, since the number of channel steels in the two adjacent tower sections is different, the number of bolt holes on the flange plates of the two tower sections is also different. The bolt holes of the two adjacent flange plates cannot be completely matched, making it difficult to connect them directly with bolts. Therefore, a first mounting surface and a second mounting surface can be set on the connector. The first mounting surface and the second mounting surface are connected to the two flange plates respectively, thereby reducing the impact of the reduction in the inner diameter of the tower section on the connection between the tower sections and ensuring the stability of the connection between the tower sections.

[0023] In one optional embodiment, connection holes are provided on both the first mounting surface and the second mounting surface, and the connection holes correspond one-to-one with the bolt holes of the flange plate.

[0024] The connection between the connector and the flange plate can be achieved by passing bolts through the connection hole and bolt hole in sequence, thereby stably connecting two adjacent tower sections together.

[0025] Secondly, the present invention also provides a wind turbine system, comprising: a wind turbine foundation; a wind turbine steel tower; and a tower structure as described in any one of the above claims, wherein both ends of the tower structure are respectively connected to the wind turbine foundation and the wind turbine steel tower.

[0026] This helps ensure the overall stability and reliability of the wind turbine system while reducing the installation and maintenance costs of the wind turbine system. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the tower structure according to an embodiment of the present invention; Figure 2 for Figure 1 Sectional view of the central tower structure along line AA; Figure 3 for Figure 2 A schematic diagram of the structure when the cavity is filled with concrete; Figure 4 This is a schematic diagram of the connecting parts of the tower structure according to an embodiment of the present invention; Figure 5 for Figure 4 BB-direction sectional view of the middle connector; Figure 6 This is a perspective view of the segmented tower section according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure when two adjacent segmented tower sections are connected according to an embodiment of the present invention; Figure 8 for Figure 1 A schematic diagram of the use of the central tower structure in a wind turbine system.

[0029] Explanation of reference numerals in the attached figures: 100 - Tower structure; 110 - Segmented tower; 111 - Sectionalized tower; 1111 - Tower component; 1111a - Receiving cavity; 1112 - Channel steel; 1112a - Bottom wall; 1112b - Side wall; 1113 - Flange plate; 1113a - Bolt hole; 1113b - Bolt; 120 - Connector; 121 - First mounting surface; 1211 - Connecting hole; 122 - Second mounting surface; 200-Wind turbine foundation; 300 - Wind turbine steel tower; 310 - Hub; 320 - Blade; 330 - Nacelle. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0031] As the background section demonstrates, existing technologies require increasing the diameter of the tower structure and the thickness of the steel plates to improve its rigidity and strength. However, this approach leads to increased steel consumption and higher manufacturing and installation costs for the tower structure.

[0032] To address the aforementioned technical problems, this application provides a tower structure comprising multiple segmented tower sections and connecting components. Each segmented tower section includes a tower section member and multiple longitudinal stiffening ribs disposed on the inner wall of the tower section member. At least two segmented tower sections are connected to form a sectioned tower section, which is then connected by connecting components to form the tower structure. By providing multiple longitudinal stiffening ribs within the tower section member, the rigidity and strength of the sectioned tower section can be improved without increasing the thickness of the tower section member, thus saving on manufacturing costs. Furthermore, dividing the tower structure into multiple segmented tower sections, each section formed by connecting at least two segmented tower sections, allows for easy transport and installation of the tower structure. The segmented tower sections are relatively short, eliminating the need for specialized transportation and saving on transportation costs. Simultaneously, compared to directly manufacturing complete tower structures, batch manufacturing of segmented tower sections improves manufacturing efficiency, reduces operational difficulty, increases the yield rate of segmented tower sections, thereby reducing material waste and saving manufacturing costs. Therefore, the tower structure provided in this application saves on the manufacturing and installation costs of the tower structure in terms of material consumption, transportation costs, and manufacturing costs.

[0033] The following is combined with Figures 1 to 8 The following describes embodiments of the present invention.

[0034] According to an embodiment of the present invention, see Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, on one hand, a tower structure 100 is provided for a wind turbine system, including a segmented tower 111 and a connector 120. The segmented tower 111 includes a tower member 1111 and a plurality of longitudinal stiffening ribs. The plurality of longitudinal stiffening ribs are arranged at intervals along the circumference of the tower member 1111 on the inner wall of the tower member 1111. There are multiple segmented towers 111, and at least two segmented towers 111 are connected in sequence to form a segmented tower 110. There are at least two segmented towers 110. Adjacent segmented towers 110 are connected by connectors 120.

[0035] In this embodiment, the tower structure 100 is divided into multiple segmented tower sections 111, allowing for mass production of these sections. Compared to directly manufacturing the complete tower structure 100, the segmented tower sections 111 are lower in height, avoiding complex operations such as overhead welding at high altitudes. This improves the first-pass yield of the segmented tower sections 111, reducing the scrap rate, saving production costs, and increasing production efficiency. Furthermore, the stiffness and strength requirements of the segmented tower sections 111 at different heights vary. By segmenting the tower structure 100, the thickness, diameter, and material of the segmented tower sections 111 within each segment can be flexibly adjusted, improving processing accuracy.

[0036] Furthermore, during transportation, either the segmented tower 111 or the sectioned tower 110 can be transported directly. Since the segmented tower 111 and sectioned tower 110 are relatively short, they can be transported using ordinary flatbed trucks or standard containers without special transport requirements. After transporting the segmented tower 111 or sectioned tower 110 to the installation location, they can be assembled into the tower structure 100, which helps save on the transportation costs of the tower structure 100. After transportation to the installation location, the segmented tower 111 can be assembled into the sectioned tower 110 first, and then a crane can be used to lift and assemble the sectioned tower 110. Completing the assembly of the segmented tower 111 on the ground reduces high-altitude work, lowers installation difficulty and costs. Since the overall weight of the sectioned tower 110 is smaller than that of the tower structure 100, a small-tonnage crane can meet the installation requirements, helping to reduce hoisting costs and thus lowering the installation cost of the tower structure 100.

[0037] In addition, the inner wall of the tower component 1111 of the segmented tower 111 is provided with multiple longitudinal stiffening ribs, which can improve the structural strength and rigidity of the segmented tower 111 without increasing the thickness of the tower component 1111, thus meeting the strength requirements of the tower structure 100. Therefore, it is beneficial to save the material cost of the segmented tower 111, thereby saving the manufacturing cost of the tower structure 100.

[0038] In specific implementation, the shape of the tower component 1111 can be cylindrical, conical, square, etc. This application embodiment does not limit this, and the longitudinal stiffening ribs can be arranged at intervals on the inner wall of the tower component 1111.

[0039] The longitudinal stiffening ribs extend along the axial direction of the tower component 1111. The longitudinal stiffening ribs can be integrally set with the tower component 1111, for example, by locally increasing the wall thickness of the tower component 1111. Alternatively, the longitudinal stiffening ribs can be independently set as reinforcing structures. When manufacturing the segmented tower 111, the steel plate is first rolled by rollers to obtain the tower component 1111. Then, the longitudinal stiffening ribs are installed on the inner wall of the tower component 1111 and fixed to the inner wall of the tower component 1111 by welding or other methods. This application embodiment does not limit this and can be reasonably set according to the actual situation.

[0040] Therefore, the tower structure 100 provided in this application embodiment saves on the manufacturing and installation costs of the tower structure 100 in many aspects, such as production cost, transportation cost, hoisting cost, and consumable cost, while meeting the requirements of stiffness and strength.

[0041] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, the longitudinal stiffening rib is a channel steel 1112; the channel steel 1112 extends axially along the tower component 1111, and the channel steel 1112 includes a bottom wall 1112a and two side walls 1112b connected to both sides of the bottom wall 1112a. The ends of the two side walls 1112b are connected to the inner wall of the tower component 1111; along the circumferential direction of the tower component 1111, the side walls 1112b of two adjacent channel steels 1112 are arranged opposite to each other, and there is a gap between the side walls 1112b of two adjacent channel steels 1112.

[0042] In practical implementation, the channel steel 1112 forms longitudinal stiffening ribs. Under the same weight, the section modulus of the channel steel 1112 is larger, which is conducive to further reducing the wall thickness of the tower component 1111 and saving the manufacturing cost of the tower structure 100.

[0043] It should be noted that when the tower component 1111 is cylindrical or conical, the inner wall of the tower component 1111 is curved, while the bottom wall 1112a of the channel steel 1112 is flat. Therefore, it is difficult to directly connect the bottom wall 1112a to the inner wall of the tower component 1111. However, since the widths of the two side walls 1112b of the channel steel 1112 are equal, the ends of the two side walls 1112b of the channel steel 1112 can be fixed to the inner wall of the tower component 1111 by welding, which helps to ensure the stability of the connection between the channel steel 1112 and the tower component 1111.

[0044] Furthermore, when the inner wall of the tower component 1111 is curved, if two adjacent channel steels 1112 are too close, they may come into contact or even partially overlap, affecting installation and reinforcement. In addition, the weld between each sidewall 1112b and the tower component 1111 causes lateral shrinkage. If two sidewalls 1112b are too close, the high-temperature zone of the weld may overlap, resulting in excessive residual tensile stress and causing local bulging or tearing of the tower component 1111. Therefore, a gap exists between the sidewalls 1112b of adjacent channel steels 1112 to separate the high-temperature zone, reducing residual stress and deformation during welding and improving the fatigue life of the segmented tower 111. Simultaneously, maintaining a certain gap between the sidewalls 1112b provides sufficient operating space for the installation and welding of the channel steels 1112, facilitating later inspection and maintenance.

[0045] In some embodiments, the gap between the sidewalls 1112b of any two adjacent channel steels 1112 is equal, which helps to improve the uniformity of stiffness and profitability of each part of the segmented tower 111, thereby ensuring that the stiffness and strength of the tower structure 100 can meet the support requirements of the wind turbine system.

[0046] In one embodiment, see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the bottom wall 1112a of the channel steel 1112, the two side walls 1112b of the channel steel 1112, and the inner wall of the tower component 1111 together form a receiving cavity 1111a, which is filled with concrete.

[0047] It is understandable that filling the cavity 1111a with concrete can improve the bending stiffness and fatigue life of the channel steel, thereby improving the supporting role of the channel steel 1112, and thus improving the overall structural strength of the tower structure 100. This can also help to further reduce the thickness of the tower component 1111 and save on the manufacturing cost of the tower structure 100.

[0048] In practical implementation, some of the receiving cavities 1111a inside the segmented tower 111 can be filled with concrete, or the receiving cavities 1111a inside the segmented tower 111 with higher structural strength requirements can be filled with concrete according to the height of the wind turbine system or other parameters, while the receiving cavities 1111a of other segmented tower 111 can remain empty. This application embodiment does not limit whether to fill with concrete or the method of filling with concrete, and can make a reasonable choice according to the actual situation.

[0049] In one embodiment, see Figure 1 , Figure 2 , Figure 6 and Figure 8As shown, from the wind turbine foundation 200 to the wind turbine steel tower 300 of the wind turbine system, the inner diameter of the segmented tower 111 decreases sequentially.

[0050] It is understandable that the tower structure 100 is generally conical, with the section 111 near the wind turbine foundation 200 having a larger inner diameter, which can provide a larger section modulus, ensuring that the bottom of the tower structure 100 can withstand large bending moments and guaranteeing the overall stability of the wind turbine system. Conversely, the section 111 near the wind turbine steel tower 300 has a smaller inner diameter, which can both meet the lower stress requirements at the top of the tower structure 100 and reduce the wind-receiving area at the top of the tower structure 100, further improving the stability of the tower structure 100. Since the bending moment required at higher elevations is smaller, the section 111 near the wind turbine steel tower 300 can have its inner diameter reduced, and the wall thickness of the tower component 1111 can also be reduced, as long as the structural strength requirements are met. Specific adjustment parameters can be reasonably set according to actual conditions, and this application embodiment does not impose any limitations on this.

[0051] In addition, the inner diameter and thickness of the tower components 1111 of the segmented tower 111 located at the top of the tower structure 100 are reduced, which helps to further reduce the steel required for the tower structure 100. When transporting the segmented tower 111, multiple segmented towers 111 can also be stacked for transport, which helps to further save on the manufacturing and transportation costs of the tower structure 100.

[0052] In one embodiment, see Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, between any two segmented tower sections 111, the cross-sectional area of ​​the channel steel 1112 of the segmented tower section 111 closer to the wind turbine foundation 200 of the wind turbine system is greater than the cross-sectional area of ​​the channel steel 1112 of the segmented tower section 111 closer to the wind turbine steel tower 300 of the wind turbine system; and / or, the number of channel steel 1112 of the segmented tower section 111 closer to the wind turbine foundation 200 is greater than the number of channel steel 1112 of the segmented tower section 111 closer to the wind turbine steel tower 300.

[0053] Understandably, the thickness of the channel steel 1112 needs to correspond to the thickness of the tower component 1111, and the ratio between the two needs to be controlled within a certain range to ensure the strengthening effect of the channel steel 1112 while avoiding welding overload. Therefore, as the wall thickness of the tower component 1111 of the segmented tower 111 gradually decreases along the direction from the wind turbine foundation 200 to the wind turbine steel tower 300, the cross-sectional area of ​​the channel steel 1112 of each segmented tower 111 also gradually decreases. Here, the cross-sectional area of ​​the channel steel 1112 refers to the sum of the cross-sectional areas of the bottom wall 1112a and the two side walls 1112b of the channel steel 1112.

[0054] Furthermore, since there is a gap between the sidewalls 1112b of two adjacent channel steels 1112, when the inner diameter of the tower component 1111 of the segmented tower 111 decreases, the number of channel steels 1112 of the corresponding segmented tower 111 can also be reduced to ensure that the channel steels 1112 have sufficient installation space and to prevent two adjacent channel steels 1112 from contacting each other. For example, the number of channel steels 1112 in each segmented tower 111 along the direction from the wind turbine foundation 200 to the wind turbine steel tower 300 can be reduced sequentially; or only the number of channel steels 1112 in each segmented tower 110 can be adjusted. For different segmented towers 111 in the same segmented tower 110, since the difference in inner diameter is small, installation can be carried out by adjusting the gap between the channel steels 1112, without reducing the number of channel steels 1112. The specific adjustment method is not limited in this embodiment and can be reasonably set according to the height, inner diameter and other parameters of the segmented tower 111.

[0055] In one embodiment, see Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the segmented tower 111 also includes a flange plate 1113; the flange plate 1113 is located at both ends opposite to the tower component 1111 along its own axial direction and covers the end face of the longitudinal stiffening rib; a plurality of bolt holes 1113a are opened on the flange plate 1113, and the bolt holes 1113a correspond to the gap between two adjacent longitudinal stiffening ribs.

[0056] It should be noted that the flange plate 1113 and the tower component 1111 can be connected by welding. After the flange plate 1113 is installed, the receiving cavity 1111a formed by the tower component 1111 and the channel steel 1112 is closed. If the bolt hole 1113a is set to correspond to the receiving cavity 1111a, there will be no operating space to install the bolt 1113b. Therefore, the bolt hole 1113a needs to be set with a gap corresponding to the side wall 1112b of the two adjacent channel steels 1112. This gap provides sufficient operating space for the installer to insert and tighten the bolt 1113b at the gap, which facilitates construction.

[0057] Similarly, once the receiving cavity 1111a is completely sealed by the flange plate 1113, it will be impossible to fill the receiving cavity 1111a with concrete. Therefore, the filling of concrete needs to be carried out before the flange plate 1113 is installed. It can be carried out when one flange plate 1113 is installed or when no flange plate 1113 is installed. This application embodiment does not limit this.

[0058] In one embodiment, see Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, two adjacent sections of the same segmented tower 110 are connected by flange plate 1113 and bolts 1113b.

[0059] Understandably, when the number of channel steels 1112 in different sections of the same tower section 110 is consistent, the number of bolt holes 1113a on the flange plates 1113 of the different sections of the tower section 111 is also consistent. Therefore, the position of the bolt holes 1113a can be adjusted appropriately to ensure that the bolt holes 1113a on two adjacent flange plates 1113 correspond one-to-one, and the bolts 1113b are passed through the two adjacent flange plates 1113 to complete the connection of the sections of the tower section 111. This allows for the rapid assembly of the sections of the tower section 110, simplifies the operation, and shortens the installation time of the tower structure 100.

[0060] In one embodiment, see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, the connector 120 includes a first mounting surface 121 and a second mounting surface 122, which are respectively connected to the flange plates 1113 of the segmented tower 111 of two adjacent segmented towers 110.

[0061] In practical implementation, since the number of channel steels 1112 in the segmented tower 111 within two adjacent segmented tower 110 is different, the number of bolt holes 1113a provided on the flange plates 1113 of the two segmented tower 111 is different. The bolt holes 1113a of the two adjacent flange plates 1113 cannot correspond completely, making it difficult to connect directly with bolts 1113b. Therefore, a first mounting surface 121 and a second mounting surface 122 can be provided on the connector 120. The first mounting surface 121 and the second mounting surface 122 are respectively connected to the two flange plates 1113, thereby reducing the impact of the reduction in the inner diameter of the segmented tower 111 on the connection between the segmented tower 110 and ensuring the stability of the connection between the segmented tower 110.

[0062] Specifically, connection holes 1211 are provided on both the first mounting surface 121 and the second mounting surface 122, and the connection holes 1211 on the first mounting surface 121 and the second mounting surface 122 correspond one-to-one with the bolt holes 1113a of the two flange plates 1113.

[0063] Therefore, the connection between the connector 120 and the flange plate 1113 can be achieved by passing the bolt 1113b through the connection hole 1211 and the bolt hole 1113a in sequence, thereby stably connecting the two adjacent segmented tower sections 110 together.

[0064] In addition, when the number of channel steels 1112 of two adjacent sections of tower 111 within the same section of tower 110 is different, the two sections of tower 111 within the same section of tower 110 can also be connected by connectors 120 to ensure the stability of the connection between the sections of tower 111. This application embodiment does not limit this, and can make reasonable selections according to the specific distribution of the channel steels 1112 and the bolt holes 1113a on the flange plate 1113.

[0065] In a specific implementation, the connector 120 can be an annular channel steel, with the first mounting surface 121 and the second mounting surface 122 formed on the two flanges of the annular channel steel. The web of the annular channel steel is located between two adjacent tower sections 1111. In this way, connection holes 1211 can be opened on the first mounting surface 121 and the second mounting surface 122 respectively, and the groove of the annular channel steel can also provide a certain operating space for tightening bolts 1113b, which facilitates the connection between the connector 120 and the flange plate 1113. Alternatively, the connector 120 can also be a solid structure without cavities, which is beneficial to enhance the structural strength of the connector 120 and ensure the supporting role of the connector 120 on the segmented tower section 111. In this case, the connection holes 1211 on the first mounting surface 121 and the second mounting surface 122 are both blind holes, and the bolts can be screwed into the connection holes 1211 through the flange plate to complete the installation. Of course, the specific structure of the connector 120 is not limited in this application embodiment, as long as it has a first mounting surface 121 and a second mounting surface 122 that are arranged opposite to each other along the axial direction of the segmented tower 110.

[0066] According to an embodiment of the present invention, on the other hand, see also... Figure 1 , Figure 2 and Figure 8 As shown, a wind turbine system is also provided, including a wind turbine foundation 200, a wind turbine steel tower 300 and any of the above-mentioned tower structures 100, with both ends of the tower structure 100 connected to the wind turbine foundation 200 and the wind turbine steel tower 300, respectively.

[0067] In this embodiment, the wind turbine foundation 200 is fixed to the ground and can be of different structures such as an extended foundation, a beam-slab foundation, or a pile cap foundation. This embodiment does not limit the type of foundation. The wind turbine steel tower 300 is equipped with structures such as a hub 310, blades 320, and a nacelle 330. The segmented tower sections 111 located at both ends of the tower structure 100 are connected to the wind turbine foundation 200 and the wind turbine steel tower 300 respectively through flanges at their ends. The wind turbine foundation safely and durablely transfers the huge load from the nacelle 330, blades 320, and tower structure 100 to the ground, thereby ensuring that the wind turbine system does not collapse or sink. By using the aforementioned tower structure 100, it is beneficial to ensure the overall stability and reliability of the wind turbine system while reducing the installation and maintenance costs of the wind turbine system.

[0068] In summary, this application provides a tower structure 100 and a wind turbine system. The manufacturing and installation process of the tower structure 100 includes: obtaining a tower component 1111 by rolling a steel plate with rollers; welding channel steel 1112 to the inner wall of the tower component 1111; pouring concrete into the channel steel 1112; welding flange plates 1113 to both ends of the tower component 1111, and aligning the bolt holes 1113a of the flange plates 1113 with the gaps between two adjacent channel steels 1112 to complete the manufacturing of the segmented tower 111; connecting two segmented towers 111 through the flange plates 1113 to obtain a segmented tower 110; connecting multiple segmented towers 110 sequentially through connectors 120 to obtain a complete tower structure 100; and finally connecting both ends of the tower structure 100 to the wind turbine foundation 200 and the wind turbine steel tower 300 respectively through the flange plates 1113 to complete the installation of the tower structure 100. Therefore, the tower structure 100 of this application embodiment enhances the structural strength of the tower component 1111 by channel steel 1112 without increasing the thickness of the tower component 1111, which is beneficial to the overall steel consumption of the tower structure 100 and saves the manufacturing cost of the tower structure 100. At the same time, dividing the tower structure 100 into multiple segmented tower sections 111 facilitates transportation and installation, which is beneficial to further save the transportation and installation costs of the tower structure 100.

[0069] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A tower structure (100) for a wind turbine system, characterized in that, The application relates to a wind turbine system, which comprises: a segmented tower drum (111), which comprises a tower drum piece (1111) and a plurality of longitudinal stiffening ribs, the longitudinal stiffening ribs being arranged on the inner wall of the tower drum piece (1111) in a circumferential direction of the tower drum piece (1111), and a plurality of the segmented tower drums (111) are connected in sequence to form a segmented tower drum (110), and the segmented tower drum (110) is at least two; a connecting piece (120), which is used for connecting two adjacent segmented tower drums (110).

2. The tower structure (100) according to claim 1, characterized in that The longitudinal stiffening rib is a channel steel (1112). The channel steel (1112) extends along the axial direction of the tower drum piece (1111), and the channel steel (1112) comprises a bottom wall (1112a) and two side walls (1112b) connected to the two sides of the bottom wall (1112a), and the end of each of the two side walls (1112b) is connected to the inner wall of the tower drum piece (1111). In the circumferential direction of the tower drum piece (1111), the side walls (1112b) of two adjacent channel steels (1112) are arranged oppositely, and a gap is formed between the side walls (1112b) of the two adjacent channel steels (1112).

3. The tower structure (100) according to claim 2, characterized in that The bottom wall (1112a) of the channel steel (1112), the two side walls (1112b) of the channel steel (1112) and the inner wall of the tower drum piece (1111) jointly form a containing cavity (1111a), and the containing cavity (1111a) is filled with concrete.

4. The tower structure (100) according to claim 1, characterized in that The segmented tower drum (111) further comprises a flange plate (1113). The flange plate (1113) is arranged at the two ends of the tower drum piece (1111) in the axial direction of the tower drum piece (1111) and covers the end face of the longitudinal stiffening rib. A plurality of bolt holes (1113a) are formed in the flange plate (1113), and the bolt holes (1113a) correspond to the gaps between the two adjacent longitudinal stiffening ribs.

5. The tower structure (100) according to claim 4, characterized in that Two adjacent segmented tower drums (111) of the same segmented tower drum (110) are connected by the flange plate (1113) and bolts (1113b).

6. The tower structure (100) according to any one of claims 1-5, characterized in that The inner diameter of the segmented tower drum (111) gradually decreases from the fan foundation (200) to the fan steel tower drum (300) of the fan system.

7. The tower structure (100) according to claim 6, characterized in that The cross-sectional area of the channel steel (1112) of the segmented tower drum (111) close to the fan foundation (200) is greater than that of the channel steel (1112) of the segmented tower drum (111) close to the fan steel tower drum (300) of the fan system; and / or The number of the channel steels (1112) of the segmented tower drum (111) close to the fan foundation (200) is greater than that of the channel steels (1112) of the segmented tower drum (111) close to the fan steel tower drum (300) of the fan system.

8. The tower structure (100) according to claim 4, characterized in that The connecting piece (120) comprises a first mounting surface (121) and a second mounting surface (122), and the first mounting surface (121) and the second mounting surface (122) are connected with the flange plate (1113) of the adjacent two segmented tower drums (110) respectively.

9. The tower structure (100) according to claim 8, characterized in that The first mounting surface (121) and the second mounting surface (122) are both provided with connecting holes (1211), and the connecting holes (1211) correspond to the bolt holes (1113a) of the flange plate (1113) one by one.

10. A fan system characterized by, Comprise: A fan foundation (200); A fan steel tower drum (300); The tower drum structure (100) as claimed in claims 1-9, and two ends of the tower drum structure (100) are connected with the fan foundation (200) and the fan steel tower drum (300) respectively.

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