Tower drum, manufacturing method of tower drum and wind generating set

Abstract

The invention provides a tower drum, a manufacturing method of the tower drum and a wind generating set. The tower drum comprises a first tower drum section and a second tower drum section which are in butt joint in the height direction of the tower drum, a plurality of first connecting through holes are formed in the first tower drum section in the circumferential direction, a plurality of second connecting through holes are formed in the second tower drum section in the circumferential direction, and the first connecting through holes and the second connecting through holes are arranged in an up-down staggered mode. The tower drum further comprises an annular plate and a plurality of arc-shaped plates, the annular plate is arranged on the outer side of the tower drum in a sleeving mode at the butt joint position of the first tower drum section and the second tower drum section, the arc-shaped plates are arranged on the inner side of the tower drum in the circumferential direction, and first fasteners penetrate through the arc-shaped plates and first connecting through holes and are fixedly connected with the annular plate. The second fastening piece penetrates through the arc-shaped plate and the second connecting through hole and is fixedly connected with the annular plate. According to the tower drum, the high connection stability is achieved.

Description

Technical Field

[0001] This application relates to the technical field of tower barrels, and more specifically, to a tower barrel, a manufacturing method of the tower barrel, and a wind turbine generator set. Background Art

[0002] With the development of the enlargement of the unit, the size of the tower barrel and the load borne by the tower barrel are also increasing synchronously. Existing tower barrels are usually formed by connecting each tower barrel section in the height direction. Specifically, the tower barrel includes an upper tower barrel section and a lower tower barrel section. Among them, the upper tower barrel section and the lower tower barrel section are stacked in the height direction and connected by an L-shaped flange. The connecting bolts of the L-shaped flange deviate from the tower barrel, and its bearing capacity is limited. There is a risk of disconnection and opening when loaded, which affects the connection stability between adjacent tower barrel sections, resulting in poor connection stability of the tower barrel. Summary of the Invention

[0003] Therefore, the purpose of this application is to provide a tower barrel and a wind turbine generator set to solve the problem of connection stability between adjacent tower barrel sections.

[0004] According to the first aspect of this application, a tower barrel is provided. The tower barrel includes a first tower barrel section and a second tower barrel section that are butted in the height direction of the tower barrel. The first tower barrel section is provided with a plurality of first connection through holes along the circumferential direction, and the second tower barrel section is provided with a plurality of second connection through holes along the circumferential direction. The plurality of first connection through holes and the plurality of second connection through holes are arranged in an up-and-down staggered manner. The tower barrel further includes an annular plate and a plurality of arc-shaped plates. At the butting portion of the first tower barrel section and the second tower barrel section, the annular plate is sleeved on the outer side of the tower barrel, and the plurality of arc-shaped plates are arranged along the circumferential direction on the inner side of the tower barrel. A first fastener passes through the arc-shaped plate, the first connection through hole and is fixedly connected to the annular plate, and a second fastener passes through the arc-shaped plate, the second connection through hole and is fixedly connected to the annular plate.

[0005] For the tower barrel provided according to the embodiment of this application, the plurality of first connection through holes on the first tower barrel section and the plurality of second connection through holes on the second connection section are arranged in an up-and-down staggered manner. At the butting portion of the first tower barrel section and the second tower barrel section, the annular plate is sleeved on the outer side of the tower barrel, and the plurality of arc-shaped plates are arranged along the circumferential direction on the inner side of the tower barrel. A first fastener passes through the arc-shaped plate, the first connection through hole and is fixedly connected to the annular plate, and a second fastener passes through the arc-shaped plate, the second connection through hole and is fixedly connected to the annular plate. In this way, each fastener can pass through the arc-shaped plate and the tower barrel wall and then be connected to the annular plate, so that the butting portion of the first tower barrel section and the second tower barrel section is pressed between the plurality of arc-shaped plates and the annular plate, thereby ensuring the connection stability of the tower barrel section.

[0006] Specifically, a plurality of first threaded holes and a plurality of second threaded holes are provided in the circumferential direction of the annular plate. The plurality of first threaded holes and the plurality of second threaded holes are staggered up and down. The plurality of first threaded holes are respectively aligned with the plurality of first connection through holes, and the plurality of second threaded holes are respectively aligned with the plurality of second connection through holes. The plurality of first fasteners respectively pass through the arc-shaped plate and the first connection through hole and are threadedly connected to the first threaded holes, and the plurality of second fasteners respectively pass through the arc-shaped plate and the second connection through hole and are threadedly connected to the second threaded holes.

[0007] In these embodiments, a plurality of first threaded holes and a plurality of second threaded holes are provided in the circumferential direction of the annular plate. The plurality of first threaded holes and the plurality of second threaded holes are staggered up and down. The plurality of first threaded holes are respectively aligned with the plurality of first connection through holes, and the plurality of second threaded holes are respectively aligned with the plurality of second connection through holes. During connection, the plurality of first fasteners respectively pass through the arc-shaped plate and the first connection through hole and are threadedly connected to the first threaded holes, and the plurality of second fasteners respectively pass through the arc-shaped plate and the second connection through hole and are threadedly connected to the second threaded holes. In this way, the plurality of first fasteners and the plurality of second fasteners on the tower barrel can be arranged in a staggered manner up and down and are respectively arranged in the circumferential direction of the tower barrel, with the same force transmission path as the tower barrel wall. Therefore, the connection between adjacent tower barrel segments can be ensured, and further the stability of the tower barrel connection can be ensured.

[0008] In some embodiments, one end of the first threaded hole and the second threaded hole facing the outside of the tower barrel is closed, and one end facing the inside of the tower barrel is open.

[0009] In these embodiments, when the plurality of first fasteners and second fasteners are respectively connected to the corresponding first threaded holes and second threaded holes, the ends of the plurality of fasteners are not exposed to the environment. In this way, it can be ensured that the performance of the fasteners during use is not easily affected by the environment. In addition, the steps of anti-corrosion of the fasteners can be omitted, thereby reducing the cost of anti-corrosion of the fasteners and the later maintenance cost.

[0010] In some embodiments, the annular plate includes an annular plate body and a plurality of internal threaded columns. At positions corresponding to the first threaded holes and the second threaded holes, a plurality of receiving holes are respectively provided on the annular plate body. The internal threaded columns are arranged in the receiving holes and are integrally connected to the annular plate body. The first threaded holes and the second threaded holes are respectively formed on the corresponding internal threaded columns.

[0011] In these embodiments, a first threaded hole and a second threaded hole are respectively formed on a plurality of internal threaded columns embedded in the main body of the annular plate. In this way, on the one hand, the machining accuracy of the first threaded hole and the second threaded hole on the annular plate can be ensured, the alignment difficulty of the arc-shaped plate, the tower barrel wall and the holes on the annular plate is reduced, and the installation of the fasteners is ensured. On the other hand, the annular plate is an integral part and the cost is relatively high. When sleeved on the outer side of the tower barrel, it is not easy to replace. By forming the first threaded hole and the second threaded hole on the corresponding internal threaded columns, during the later maintenance process, the threaded holes for installing the fasteners can be maintained by replacing the internal threaded columns, thus avoiding the trouble of replacing the annular plate again.

[0012] In some embodiments, a plurality of the arc-shaped plates are arranged adjacent to each other in the circumferential direction of the tower barrel and are spliced into a ring.

[0013] In these embodiments, a plurality of arc-shaped plates are arranged adjacent to each other in the circumferential direction of the tower barrel, so that the butt joint of the first tower barrel section and the second tower barrel section can be fixed in multiple directions along the tower barrel wall in the circumferential direction, further ensuring the stability of the connection.

[0014] In some embodiments, in the circumferential direction of the tower barrel, two opposite side edges of the arc-shaped plate are inclined with respect to the vertical direction, and adjacent arc-shaped plates are in contact with each other at the side edges.

[0015] In these embodiments, a plurality of arc-shaped plates are in contact with each other. In this way, a plurality of arc-shaped plates can be stressed as a whole, and thus a plurality of fasteners arranged thereon can also be stressed evenly, further ensuring the stability of the connection of the tower barrel.

[0016] In some embodiments, a first mounting hole and a second mounting hole are provided on each arc-shaped plate. The first mounting hole and the second mounting hole are arranged vertically staggered. The position of the first mounting hole corresponds to that of the first connection through hole, and the position of the second mounting hole corresponds to that of the second connection through hole. The number of the first mounting holes and the second mounting holes on each arc-shaped plate is not equal.

[0017] In these embodiments, a first mounting hole corresponding to the position of the first connection through hole and a second mounting hole corresponding to the position of the second connection through hole are provided on each arc-shaped plate, and the number of the first mounting holes and the second mounting holes on each arc-shaped plate is not equal. When connecting, a plurality of first fasteners pass through the first mounting holes, the first connection through holes on each arc-shaped plate and are threadedly connected to the first bolt holes, and a plurality of second fasteners pass through the second mounting holes, the second connection through holes on each arc-shaped plate and are threadedly connected to the second bolt holes. Based on the positioning principle, a certain limiting effect can be achieved to prevent a plurality of arc-shaped plates from shifting after connection, so that the connection performance of the tower barrel is not affected by the shifting after connection.

[0018] In some embodiments, the arc-shaped plate is conical, trapezoidal, triangular or parallelogram-shaped; and / or in the circumferential direction of the tower barrel, two adjacent arc-shaped plates are alternately inverted up and down.

[0019] In these embodiments, the arc-shaped plates that are generally conical, trapezoidal, triangular or parallelogram-shaped can be alternately arranged upside down, so as to facilitate the installation of multiple arc-shaped plates. For example, it is convenient to enclose multiple arc-shaped plates in the circumferential direction to form a ring.

[0020] In some embodiments, the connection line between the first mounting hole and the second mounting hole on each arc-shaped plate forms an isosceles triangle.

[0021] In some embodiments, each arc-shaped plate includes an arc-shaped plate body and a plurality of convex columns. At positions corresponding to the first mounting hole and the second mounting hole, a plurality of receiving grooves are provided on the arc-shaped plate body. The convex columns are arranged in the receiving grooves and are integrally connected to the arc-shaped plate body. The first mounting hole and the second mounting hole are respectively formed on the corresponding convex columns.

[0022] In these embodiments, a plurality of receiving grooves are provided on the arc-shaped plate body, and the convex columns are arranged in the receiving grooves and are integrally connected to the arc-shaped plate body. The first mounting hole and the second mounting hole are formed on the convex columns. In this way, on the one hand, the processing accuracy of the first mounting hole and the second mounting hole that is not affected by the radian can be ensured. On the other hand, it can be made such that the fastener abuts against the end face of the convex column after connection. Compared with the scheme where the fastener directly abuts against the arc surface, the possibility of the fastener loosening due to shaking can be reduced.

[0023] According to a second aspect of the present application, a method for manufacturing a tower barrel, wherein the method includes: providing a first tower barrel section, the first tower barrel section being provided with a plurality of first connection through holes along the circumferential direction; providing a second tower barrel section, the second tower barrel section being provided with a plurality of second connection through holes along the circumferential direction. An annular plate is provided on the outer periphery of the end of one of the first tower barrel section and the second tower barrel section, and the annular plate is docked with the other of the first tower barrel section and the second tower barrel section in the height direction, so that the plurality of first connection through holes and the plurality of second connection through holes are arranged in a vertically staggered manner; a plurality of arc-shaped plates are provided on the inner wall of the tower barrel corresponding to the docking position of the first tower barrel section and the second tower barrel section; a first fastener is used to pass through the arc-shaped plate, the first connection through hole and be fixedly connected to the annular plate, and a second fastener is used to pass through the arc-shaped plate, the second connection through hole and be fixedly connected to the annular plate, so that the tower barrel wall corresponding to the docking position is clamped between the annular plate and the plurality of arc-shaped plates, thereby connecting the first tower barrel section and the second tower barrel section.

[0024] According to a third aspect of the present application, a wind turbine generator is provided, wherein the wind turbine generator includes a tower barrel according to each of the above embodiments. Description of the Drawings

[0025] Through the description of the embodiments in conjunction with the drawings, the above and / or other features and aspects of the inventive concept will become clear and easy to understand.

[0026] Figure 1 is a partial structural schematic diagram of a tower barrel provided according to an embodiment of the present application;

[0027] Figure 2 is a partial cross-sectional structural schematic diagram of a tower barrel provided according to an embodiment of the present application;

[0028] Figure 3 is an enlarged cross-sectional structural schematic diagram of a tower barrel provided according to an embodiment of the present application;

[0029] Figure 4 is a structural schematic diagram of a first tower barrel section provided according to an embodiment of the present application;

[0030] Figure 5 is a structural schematic diagram of a second tower barrel section provided according to an embodiment of the present application;

[0031] Figure 6 is a structural schematic diagram of the butt joint of the first tower barrel section and the second tower barrel section provided according to an embodiment of the present application;

[0032] Figure 7 is a structural schematic diagram of an annular plate provided according to an embodiment of the present application;

[0033] Figure 8 is a perspective structural schematic diagram of an internal threaded column provided according to an embodiment of the present application;

[0034] Figure 9 is a structural schematic diagram of an arc-shaped plate provided according to an embodiment of the present application.

[0035] Symbol Description:

[0036] 10. First tower barrel section; 11. First connection through hole; 12. First annular body;

[0037] 20. Second tower barrel section; 21. Second connection through hole; 22. Second annular body;

[0038] 30. Annular plate; 31. First threaded hole; 32. Second threaded hole; 33. Annular plate body; 331. Accommodating hole; 34. Internal threaded column;

[0039] 40. Arc-shaped plate; 41. First mounting hole; 42. Second mounting hole; 43. Arc-shaped plate body; 44. Convex column;

[0040] 51. First fastener; 52. Second fastener. Detailed implementation manners

[0041] It should be noted that the definitions of orientation terms such as "upper", "lower", "top" and "bottom" in this application are all based on the orientation of the product when it is placed vertically in the normal use state as the reference direction. It should not be construed as a specific limitation on the embodiments of this application. In addition, in the context, it should also be explained that when it is mentioned that one element is connected to another element, it can be either directly connected or indirectly connected, unless it is clearly stated that one element is directly connected to another element.

[0042] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0043] Example embodiments of the inventive concept will be described in more detail below. Although example embodiments of the inventive concept are described below, it should be understood that the inventive concept can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the inventive concept can be fully conveyed to those skilled in the art.

[0044] According to a first aspect of the present application, a tower barrel is provided, and the tower barrel is used in a wind turbine generator set. Wherein, as Figures 1 to 7 shown, the tower barrel includes a first tower barrel section 10 and a second tower barrel section 20 that are butted in the height direction of the tower barrel. The first tower barrel section 10 is provided with a plurality of first connection through holes 11 along the circumferential direction, and the second tower barrel section 20 is provided with a plurality of second connection through holes 21 along the circumferential direction. The plurality of first connection through holes 11 and the plurality of second connection through holes 21 are arranged in a vertically staggered manner. The tower barrel further includes an annular plate 30 and a plurality of arc-shaped plates 40. At the butting position of the first tower barrel section 10 and the second tower barrel section 20, the annular plate 30 is sleeved on the outer side of the tower barrel, and the plurality of arc-shaped plates 40 are arranged along the circumferential direction on the inner side of the tower barrel. The first fasteners 51 pass through the arc-shaped plates 40, the first connection through holes 11 and are fixed to the annular plate 30, and the second fasteners 52 pass through the arc-shaped plates 40, the second connection through holes 21 and are fixed to the annular plate 30.

[0045] According to the tower barrel provided by the embodiment of the present application, a plurality of first connection through holes 11 on the first tower barrel section 10 and a plurality of second connection through holes 21 on the second tower barrel section 20 are arranged in a vertically staggered manner. At the docking position of the first tower barrel section 10 and the second tower barrel section 20, an annular plate 30 is sleeved on the outer side of the tower barrel, and a plurality of arc-shaped plates 40 are arranged along the circumferential direction on the inner side of the tower barrel. A first fastener 51 passes through the arc-shaped plate 40, the first connection through hole 11 and is fixed to the annular plate 30, and a second fastener 52 passes through the arc-shaped plate 40, the second connection through hole 21 and is fixed to the annular plate 30. In this way, each fastener can pass through the arc-shaped plate 40 and the tower barrel wall and then be connected to the annular plate 30, so that the docking position of the first tower barrel section 10 and the second tower barrel section 20 can be pressed between the plurality of arc-shaped plates 40 and the annular plate 30, thereby ensuring the connection stability of the segmented tower barrel. In addition, the connection method of this segmented tower barrel is relatively simple and is suitable for popularization and application.

[0046] According to the present application, the first tower barrel section 10 and the second tower barrel section 20 can be respectively formed by rolling steel plates. In some embodiments, the tower barrel can also be a hollow cylindrical structure. In the case where the tower barrel is a cylindrical structure, the prefabricated first tower barrel section 10 and the second tower barrel section 20 can be universal. In other embodiments, the tower barrel is hollow and has a tapered structure with a smaller upper part and a larger lower part. In the case where the tower barrel is a tapered structure, the first tower barrel section 10 and the second tower barrel section 20 need to be prefabricated respectively. In the drawings of the present application, although only an example of the tower barrel being a cylindrical structure is shown, it does not mean that the tower barrel protected by the present application must be a tower barrel with a cylindrical structure.

[0047] According to the present application, the first tower barrel section 10 is located at the upper end of the second tower barrel section 20. A plurality of first connection through holes 11 are provided along the circumferential direction at the lower end of the first tower barrel section 10, and a plurality of second connection through holes 21 are provided along the circumferential direction at the upper end of the second tower barrel section 20. After the first tower barrel section 10 and the second tower barrel section 20 are initially docked in the height direction of the tower barrel, the plurality of first connection through holes 11 and the plurality of second connection through holes 21 can be arranged in a vertically staggered manner.

[0048] As Figure 1 、 Figure 4 and Figure 5 shown, the first tower barrel section 10 includes a first annular body 12 and a plurality of first connection through holes 11 arranged along the circumferential direction of the first annular body 12. Among them, the plurality of first connection through holes 11 are respectively located at the lower end of the first annular body 12. The second tower barrel section 20 includes a second annular body 22 and a plurality of second connection through holes 21 arranged along the circumferential direction on the second annular body 22. Among them, the plurality of second connection through holes 21 are respectively located at the upper end of the second annular body 22. During installation, the first annular body 12 and the second annular body 22 are docked in the height direction, and the plurality of first connection through holes 11 and the plurality of second connection through holes 21 can be arranged in a vertically staggered manner.

[0049] In these embodiments, a plurality of first connection through-holes 11 are arranged near the lower end of the first tower barrel section 10, and a plurality of second connection through-holes 21 are arranged near the upper end of the second tower barrel section 20. In this way, the size of the required annular plate 30 can be reduced to a certain extent, and in addition, the stability of the connection can be ensured.

[0050] In the embodiments of the present application, the plurality of first connection through-holes 11 and the plurality of second connection through-holes 21 are arranged in a vertically staggered manner. Exemplarily, the plurality of first connection through-holes 11 are located in the circumferential direction of the first tower barrel section 10 and above, and the plurality of second connection through-holes 21 are located in the circumferential direction of the second tower barrel section 20 and below. On the circumferential plane of the tower barrel, the projections of the plurality of first connection through-holes 11 and the plurality of second connection through-holes 21 on the circumferential plane do not completely overlap or do not overlap at all. In a preferred embodiment, as Figure 1 shown, the plurality of first connection through-holes 11 and the plurality of second connection through-holes 21 are arranged vertically, and their projections on the circumferential plane do not overlap at all. In this way, the adjacent fasteners for fixing the first tower barrel section 10 and the second tower barrel section 20 can be arranged at a preset inclination angle, so as to avoid dislocation and further ensure the stability of the connection. In the present application, the term "vertically staggered" can be understood with reference to the above definition.

[0051] In some embodiments, at the docking joint of the first tower barrel section 10 and the second tower barrel section 20, the annular plate 30 is sleeved on the outer side of the tower barrel and abuts against the tower barrel wall at the docking joint. A plurality of first threaded holes 31 and a plurality of second threaded holes 32 are provided in the circumferential direction of the annular plate 30. The plurality of first threaded holes and the plurality of second threaded holes are vertically staggered. The plurality of first threaded holes 31 are respectively aligned with the plurality of first connection through-holes 11, and the plurality of second threaded holes 32 are respectively aligned with the plurality of second connection through-holes 21. There are a plurality of first fasteners 51 and a plurality of second fasteners 52. The plurality of first fasteners 51 respectively pass through the arc-shaped plate 40, the first connection through-holes 11 and are threadedly connected to the first threaded holes 31, and the plurality of second fasteners 52 respectively pass through the arc-shaped plate 40, the second connection through-holes 21 and are threadedly connected to the second threaded holes 32.

[0052] In these embodiments, a plurality of first threaded holes and a plurality of second threaded holes are staggered up and down. The plurality of first threaded holes 31 are respectively aligned with the plurality of first connection through holes 11, and the plurality of second threaded holes 32 are respectively aligned with the plurality of second connection through holes 21. During connection, the plurality of first fasteners 51 respectively pass through the first connection through holes 11 and are connected to the first threaded holes 31, and the plurality of second fasteners 52 respectively pass through the second connection through holes 21 and are connected to the second threaded holes 32. In this way, the plurality of first fasteners 51 and the plurality of second fasteners 52 can be staggered up and down and are respectively arranged in the circumferential direction of the tower barrel, and have the same force transmission path as the tower barrel wall. Therefore, the connection stability between adjacent tower barrel segments can be further ensured, and thus the stability of the tower barrel connection can be ensured.

[0053] In the embodiments of the present application, the number of the plurality of first threaded holes 31 corresponds to the number of the plurality of first connection through holes 11, and the number of the plurality of second threaded holes 32 corresponds to the number of the plurality of second connection through holes 21. During connection, the construction personnel can visually determine that the plurality of second threaded holes 32 are respectively aligned with the plurality of second connection through holes 21 one by one. It is also possible to assist in determining that the centers of the plurality of second threaded holes 32 are respectively aligned with the plurality of second connection through holes 21 by means of relevant instruments.

[0054] In the embodiments of the present application, the annular plate 30 refers to a plate that is generally annular and can be formed by rolling a steel plate. The present application does not limit that the annular plate must be an annular structure with equal diameter in the narrow sense. This is because the tower barrel is usually in a conical structure with a smaller upper part and a larger lower part. Those skilled in the art can understand that the annular plate 30 has a conical structure adapted to the outer wall surface of the tower barrel. In this way, it can be sleeved outside the tower barrel and abutted against the outer wall surface of the tower barrel. Therefore, when connecting fasteners, it can ensure cooperation with the fasteners and clamp the butt joint, further ensuring the firmness of the connection between the segmented tower barrels.

[0055] According to the present application, an annular plate can be provided on the outer side of the tower barrel. In order to avoid the inner wall surface of the tower barrel being worn by the installation of fasteners, an annular plate can also be provided on the inner side of the tower barrel, so that the fasteners can be prevented from directly contacting the wall surface of the tower barrel. Specifically, an annular plate is provided on the inner wall surface of the tower barrel corresponding to the butt joint of the first tower barrel section 10 and the second tower barrel section 20. However, in the case where a plurality of first connection through holes 11 and a plurality of second connection through holes 21 on the first tower barrel section 10 and the second tower barrel section 20 are arranged in a vertically staggered manner, if annular plates are provided on both the inner and outer wall surfaces of the tower barrel, the processing precision requirements for each hole on the inner wall surface annular plate, the tower barrel wall, and the outer wall surface annular plate are extremely high. Only in this way can the holes be aligned one by one during installation. In order to reduce the processing precision requirements, the present application is provided with a plurality of arc-shaped plates on the inner wall of the tower barrel corresponding to the butt joint of the first tower barrel section 10 and the second tower barrel section 20. The plurality of arc-shaped plates and the annular plate 30 on the outer wall of the tower barrel are respectively arranged on the inner and outer sides of the tower barrel wall and clamp the tower barrel wall corresponding to the butt joint of the first tower barrel section 10 and the second tower barrel section 20 when cooperating with the fasteners. In this way, it is possible to avoid being limited by the influence of processing precision. In addition, the weight of the tower barrel can be reduced, and it has the same strength as the tower barrel with annular plates provided on both the inner and outer wall surfaces.

[0056] In some embodiments, the tower barrel further includes a plurality of arc-shaped plates 40. The plurality of arc-shaped plates 40 are circumferentially spaced and arranged on the inner wall of the tower barrel corresponding to the butt joint of the first tower barrel section 10 and the second tower barrel section 20. A plurality of first fasteners 51 respectively pass through the arc-shaped plates 40, the first connection through holes 11 and are threadedly connected to the annular plate 30. A plurality of second fasteners 52 respectively pass through the arc-shaped plates 40, the second connection through holes 21 and are threadedly connected to the annular plate 30.

[0057] In the embodiments of the present application, the arc-shaped plate 40 has an arc-shaped structure adapted to the inner wall surface of the tower barrel. In this way, the plurality of arc-shaped plates 40 are circumferentially arranged on the inner wall of the tower barrel corresponding to the butt joint of the first tower barrel section and the second tower barrel section. The fasteners can pass through the arc-shaped plates 40 and the tower barrel wall and then be connected to the annular plate 30, so that the tower barrel wall corresponding to the butt joint of the first tower barrel section 10 and the second tower barrel section 20 is clamped between the arc-shaped plate 40 and the annular plate 30, thereby further ensuring the stability of the connection of the tower barrel sections.

[0058] In some embodiments, the plurality of arc-shaped plates 40 are adjacent to each other in the circumferential direction of the tower barrel and are spliced into a ring shape.

[0059] In these embodiments, the plurality of arc-shaped plates 40 are adjacent to each other in the circumferential direction of the tower barrel, and can fix the tower barrel wall corresponding to the butt joint of the first tower barrel section 10 and the second tower barrel section 20 in multiple directions in the circumferential direction.

[0060] In some embodiments, in the circumferential direction of the tower barrel, the two opposite side edges of the arc-shaped plate 40 are inclined with respect to the vertical direction, and adjacent arc-shaped plates 40 are in contact with each other at the side edges.

[0061] In these embodiments, multiple arc-shaped plates 40 are in contact with each other. In this way, multiple arc-shaped plates 40 can be stressed as a whole, and thus multiple fasteners arranged thereon can also be stressed evenly, thereby further ensuring the stability of the connection of the tower barrel.

[0062] In some embodiments, each arc-shaped plate 40 is provided with a first mounting hole 41 and a second mounting hole 42. The first mounting hole 41 and the second mounting hole 42 are arranged in a vertically staggered manner. The first mounting hole 41 corresponds to the position of the first connection through hole 11, and the second mounting hole 42 corresponds to the position of the second connection through hole 21. The number of the first mounting holes 41 and the second mounting holes 42 on each arc-shaped plate 40 is not equal. Figure 9 In the illustrated example, the number of mounting holes on the arc-shaped plate 40 can be three. Among them, the number of the first mounting holes 41 is 2, and the number of the second mounting holes 42 is 1. Of course, in some embodiments, the number of the first mounting holes 41 can be 2, and the number of the second mounting holes 42 can be 1. In addition, the present application does not limit that the number of mounting holes on the arc-shaped plate 40 must be the above-mentioned 3. In some embodiments, according to the diameter of the tower barrel, the mounting holes on the arc-shaped plate 40 can also be five or seven.

[0063] In these embodiments, a first mounting hole 41 corresponding to the position of the first connection through hole 11 is provided on each arc-shaped plate 40, a second mounting hole 42 corresponding to the position of the second connection through hole 21 is provided, and the number of the first mounting holes 41 and the second mounting holes 42 on each arc-shaped plate 40 is not equal. When connecting, multiple first fasteners pass through the first mounting holes 41, the first connection through holes 11 on each arc-shaped plate and are threadedly connected to the first threaded holes 31, and multiple second fasteners 52 pass through the second mounting holes 42, the second connection through holes 21 on each arc-shaped plate and are threadedly connected to the second threaded holes 32. Based on the positioning principle, it can play a certain limiting role to prevent multiple arc-shaped plates 40 from misaligning after connection, so that the connection performance of the tower barrel is not affected by misalignment after connection.

[0064] According to the present application, the shapes of some of the multiple arc-shaped plates 40 can be the same, so that it is convenient to prefabricate the arc-shaped plates 40 in advance. For example, but not limited to, in some embodiments, multiple arc-shaped plates 40 are formed into a centrally symmetric figure with an angle, such as an equilateral triangle, a parallelogram or a rhombus.

[0065] According to the present application, the arc-shaped plates 40 are arranged regularly in the circumferential direction of the tower barrel, and the mounting holes thereon are arranged as regularly as possible, so that a plurality of fasteners can also be arranged regularly in the circumferential direction to ensure the connection performance of the tower barrel.

[0066] In some embodiments, the arc-shaped plates 40 are generally conical or trapezoidal, and in the circumferential direction of the tower barrel, two adjacent arc-shaped plates 40 are alternately inverted up and down.

[0067] In these embodiments, the arc-shaped plates 40 that are generally conical or trapezoidal can be arranged alternately inverted up and down, so as to facilitate the installation of a plurality of arc-shaped plates 40.

[0068] In some embodiments, the connection line between the first mounting hole 41 and the second mounting hole 42 on each arc-shaped plate 40 forms an isosceles triangle. For example, each arc-shaped plate 40 includes three mounting holes, and the connection line of the centers of the three mounting holes forms an isosceles triangle.

[0069] In these embodiments, when there are three mounting holes on the arc-shaped plate 40, in the form of a group of three fasteners, the triangular structure formed by surrounding the fasteners can limit the arc-shaped plate 40, avoiding the dislocation of the arc-shaped plate 40 after connection, so that the connection performance of the tower barrel will not be affected by dislocation after connection. In addition, the repeated arrangement of the mounting holes on the arc-shaped plate can save the manufacturing cost to a certain extent.

[0070] During the use of the tower barrel, it will shake to a certain extent with the wind. Thus, the connection part of the tower barrel will fail due to the shaking. Therefore, the connection reliability between two adjacent tower barrel segments is extremely important. According to some embodiments of the present application, the inner wall surfaces of the first tower barrel segment 10 and the second tower barrel segment 20 are arc surfaces, and the second fasteners 52 and the first fasteners 51 are all fastening bolts. Thus, the ends of a plurality of second fasteners 52 and first fasteners 51 are fixed on the annular plate 30, and the bolt heads of the second fasteners 52 and first fasteners 51 directly act on the inner arc wall surface of the tower barrel, which may affect the force on the fasteners. For example, the bolts are prone to loosen due to vibration, thus affecting the connection reliability of the tower barrel. And, forming threaded holes or through holes on the arc surface requires strict control during the manufacturing process, and the formed holes are prone to deviation and have low precision, making it difficult to meet the alignment requirements. Especially for large-sized components such as tower barrels that are difficult to implement on a numerically controlled machine tool, it is even more difficult to ensure that their precision can meet the alignment requirements between holes. It can be seen that it is necessary to ensure that the holes on the arc-shaped plate and the annular plate can be aligned with the connection through holes on the above-mentioned tower barrel segments.

[0071] In order to prevent the fasteners from loosening and ensure that each hole can be aligned with the connecting through holes on the above-mentioned tower barrel section, in some embodiments, each arc-shaped plate 40 includes a plurality of planar regions, and the first mounting hole 41 and the second mounting hole 42 are respectively formed on the corresponding planar regions.

[0072] Specifically, each arc-shaped plate 40 includes an arc-shaped plate body 43 and a plurality of convex columns 44. At positions corresponding to the first mounting hole 41 and the second mounting hole 42, a plurality of receiving grooves are provided on the arc-shaped plate body 43, and the convex columns 44 are arranged in the receiving grooves and connected to the arc-shaped plate body 43 as a whole. The first mounting hole 41 and the second mounting hole 42 are respectively formed on the corresponding convex columns 44.

[0073] In the embodiment of the present application, the arc-shaped plate body 43 includes a plate-shaped structure with a preset radian, and the convex column 44 is a columnar structure with a planar region at its end.

[0074] In these embodiments, a plurality of receiving grooves are provided on the arc-shaped plate body 43, the convex columns 44 are arranged in the receiving grooves and connected to the arc-shaped plate body 43 as a whole, and the first mounting hole 41 and the second mounting hole 42 are formed on the convex columns 44. In this way, on the one hand, the processing accuracy of the first mounting hole 41 and the second mounting hole 42 of each arc-shaped plate 40 will not be affected by the radian, and on the other hand, the fasteners can be made to abut against the planar region at the end of the convex column 44 after connection. Compared with the solution where the fasteners directly abut against the arc surface, the possibility of the fasteners loosening due to shaking can be reduced.

[0075] In a situation where the wind environment is harsh, the fasteners are prone to corrosion due to environmental influence. In order to ensure the performance of the fasteners during use, usually, before connecting the tower barrels, certain anti-corrosion treatments are carried out on the fasteners, and the cost of such anti-corrosion treatments is relatively high.

[0076] In order to ensure the performance of the fasteners during use, in some embodiments, the ends of the first threaded hole 31 and the second threaded hole 32 facing the outside of the tower barrel are closed, and the ends facing the inside of the tower barrel are open. In this way, when a plurality of fasteners are connected to the first threaded hole 31 and the second threaded hole 32, the ends of the plurality of fasteners are not exposed to the environment. In this way, it can be ensured that the performance of the fasteners during use is not easily affected by the environment. In addition, the steps of anti-corrosion of the fasteners can be omitted, thereby reducing the cost of anti-corrosion of the fasteners and the later maintenance cost.

[0077] In some embodiments, the annular plate 30 includes an annular plate body 33 and a plurality of internal threaded posts 34. At positions corresponding to the first threaded hole 31 and the second threaded hole 32, a plurality of receiving holes 331 are respectively provided on the annular plate body 33. The internal threaded posts 34 are disposed in the receiving holes 331 and are integrally connected to the annular plate body 33. The first threaded hole 31 and the second threaded hole 32 are respectively formed on the corresponding internal threaded posts 34.

[0078] In the embodiments of the present application, the internal threaded post 34 is a columnar structure having a first threaded hole 31 and a second threaded hole 32 at the central portion. In Figure 8 the illustrated example, the internal threaded post 34 has two opposite end faces. The first threaded hole 31 and the second threaded hole 32 respectively extend from one end face towards the other end face and do not penetrate the other end face.

[0079] In these embodiments, the first threaded hole 31 and the second threaded hole 32 are formed on the internal threaded posts 34 embedded in the annular plate body 33. Thus, on the one hand, the machining accuracy of the first threaded hole 31 and the second threaded hole 32 on the annular plate 30 can be ensured, the alignment difficulty of the arc-shaped plate 40, the tower barrel wall, and the various holes on the annular plate 30 is reduced, and the installation of the fasteners is ensured. On the other hand, the annular plate 30 is an integral part and the cost is relatively high. When sleeved on the outer side of the tower barrel, it is not easy to replace. By forming the first threaded hole 31 and the second threaded hole 32 on the corresponding internal threaded posts 34, during the later maintenance process, the maintenance of the threaded holes for installing the fasteners can be achieved by replacing the internal threaded posts 34, thereby avoiding the trouble of replacing the annular plate 30 again.

[0080] According to a second aspect of the present application, there is provided a method for manufacturing a tower barrel. The tower barrel includes a first tower barrel section 10 and a second tower barrel section 20. The first tower barrel section 10 is provided with a plurality of first connection through holes 11 along the circumferential direction, and the second tower barrel section 20 is provided with a plurality of second connection through holes 21 along the circumferential direction. The method for manufacturing the tower barrel includes:

[0081] Step S101: Provide the first tower barrel section 10, and the first tower barrel section 10 is provided with a plurality of first connection through holes 11 along the circumferential direction.

[0082] Step S102: Provide the second tower barrel section 20, and the second tower barrel section 20 is provided with a plurality of second connection through holes 21 along the circumferential direction.

[0083] Step S103: Dispose the annular plate 30 on the outer periphery of the end of one of the first tower barrel section 10 and the second tower barrel section 20, and make the one dock with the other of the first tower barrel section 10 and the second tower barrel section 20 in the height direction through the annular plate 30, so that the plurality of first connection through holes 11 and the plurality of second connection through holes 21 are arranged in a vertically staggered manner.

[0084] Step S104, a plurality of arc-shaped plates 40 are arranged on the inner wall of the tower barrel corresponding to the docking position between the first tower barrel section 10 and the second tower barrel section 20.

[0085] Step S105, a first fastener 51 passes through the arc-shaped plate 40, the first connection through hole 11 and is connected to the annular plate 30, and a second fastener 52 passes through the arc-shaped plate 40, the second connection through hole 21 and is connected to the annular plate 30, so that the tower barrel wall corresponding to the docking position is clamped between the annular plate 30 and the plurality of arc-shaped plates 40, thereby connecting the first tower barrel section 10 and the second tower barrel section 20.

[0086] According to the tower barrel provided by the embodiment of the present application, a plurality of first connection through holes 11 on the first tower barrel section 10 and a plurality of second connection through holes 21 on the second tower barrel section 20 are arranged in a vertically staggered manner. At the docking position between the first tower barrel section 10 and the second tower barrel section 20, the annular plate 30 is sleeved on the outer side of the tower barrel, and a plurality of arc-shaped plates 40 are arranged circumferentially on the inner side of the tower barrel. The first fastener 51 passes through the arc-shaped plate 40, the first connection through hole 11 and is fixed to the annular plate 30, and the second fastener 52 passes through the arc-shaped plate 40, the second connection through hole 21 and is fixed to the annular plate 30. In this way, each fastener can pass through the arc-shaped plate 40 and the tower barrel wall and then be connected to the annular plate 30, so that the docking position of the first tower barrel section 10 and the second tower barrel section 20 can be pressed between the plurality of arc-shaped plates 40 and the annular plate 30, thereby ensuring the connection stability of the segmented tower barrel. In addition, the connection method of this segmented tower barrel is relatively simple and is suitable for popularization and application.

[0087] According to the present application, during connection, a vertical installation method can be adopted. The annular plate 30 is sleeved and fixed on the end of one of the first tower barrel section 10 and the second tower barrel section 20. Then, a crane is used to dock it with the other of the first tower barrel section 10 and the second tower barrel section 20 in the height direction. Then, a plurality of arc-shaped plates 40 are arranged at intervals circumferentially inside the tower barrel, and the first fastener 51 passes through the arc-shaped plate 40, the first connection through hole 11 and is threadedly connected to the annular plate 30, and the second fastener 52 respectively passes through the arc-shaped plate 40, the second connection through hole 21 and is threadedly connected to the annular plate 30. In this way, through the bolt fastening force between the fastener and the annular plate 30, the tower barrel wall corresponding to the docking position of the first tower barrel section 10 and the second tower barrel section 20 is squeezed between the arc-shaped plate 40 and the annular plate 30. In this way, the stability of the tower barrel connection can be ensured. In addition, the connection operation of the fastener can be carried out inside the tower barrel, which can ensure the safety of personnel construction.

[0088] According to the present application, the first tower barrel section 10 and the second tower barrel section 20 are stacked and docked in the height direction of the tower barrel, and the first tower barrel section 10 is located above or below the second tower barrel section 20.

[0089] In some embodiments, the first tower barrel section 10 is located above the second tower barrel section 20. Step S103: Provide an annular plate 30 on the outer periphery of the end of one of the first tower barrel section 10 and the second tower barrel section 20, and butt it against the other one of the first tower barrel section 10 and the second tower barrel section 20 in the height direction, and arrange a plurality of first connection through holes 11 and a plurality of second connection through holes 21 in a vertically staggered manner, including:

[0090] Step S1031: Provide an annular plate 30 on the outer periphery of the end of the first tower barrel section 10, and butt the first tower barrel section 10 against the second tower barrel section 20 in the height direction through the annular plate 30, and arrange a plurality of first connection through holes 11 and a plurality of second connection through holes 21 in a vertically staggered manner.

[0091] In some embodiments, the manufacturing method of the tower barrel further includes: adjusting the butt joint position of the first tower barrel section 10 and the second tower barrel section 20 so that the first connection through holes 11 and the second connection through holes 21 of the first tower barrel section 10 and the second tower barrel section 20 are arranged in a vertically staggered manner after butt joint. Specifically, a clamping groove is provided on one of the first tower barrel section 10 and the second tower barrel section 20, and a clamping rib is provided on the other one of the first tower barrel section 10 and the second tower barrel section 20. The step of adjusting the butt joint position of the first tower barrel section 10 and the second tower barrel section 20 includes: when the first tower barrel section 10 and the second tower barrel section 20 are butted, fitting the clamping rib into the clamping groove, so as to ensure that the first connection through holes 11 and the second connection through holes 21 of the first tower barrel section 10 and the second tower barrel section 20 are arranged in a vertically staggered manner after butt joint.

[0092] In these embodiments, the clamping ribs and the clamping grooves are prefabricated on the first tower barrel section 10 and the second tower barrel section 20 in advance. When manufacturing the tower barrel, the butt joint steps of the first tower barrel section 10 and the second tower barrel section 20 can be simplified, the butt joint difficulty can be reduced, and the work efficiency can be improved. Especially, it has higher superiority for offshore installation restricted by the environment and with a tight construction period.

[0093] According to the present application, in step S1031, an annular plate 30 is provided on the outer periphery of the end of the first tower barrel section 10. The manufacturing method of the tower barrel includes: aligning the first connection through hole of the first tower barrel section 10 with the corresponding threaded hole of the annular plate 30.

[0094] Specifically, a positioning groove is provided on the end side wall of one of the first tower barrel section 10 and the annular plate 30, and a positioning rib is provided on the end side wall of the other of the first tower barrel section 10 and the annular plate 30. The alignment of the plurality of first threaded holes 31 with the plurality of first connection through holes 11 respectively, and the alignment of the plurality of second threaded holes 32 with the plurality of second connection through holes 21 respectively include: aligning the positioning groove with the positioning rib, so as to align the plurality of first threaded holes 31 with the plurality of first connection through holes 11 respectively, and the plurality of second threaded holes 32 with the plurality of second connection through holes 21 respectively, that is, aligning the plurality of connection through holes on the first tower barrel section 10 with the plurality of bolt holes on the annular plate 30 one by one.

[0095] In these embodiments, prefabricating the positioning groove and the positioning rib at the corresponding positions of the first tower barrel section 10 and the annular plate 30 in advance can simplify the docking steps of the first tower barrel section 10 and the annular plate 30 and reduce the docking difficulty.

[0096] According to the third aspect of the present application, a wind turbine generator is provided, wherein the wind turbine generator includes a tower barrel provided according to each of the above embodiments. Therefore, it also has all the beneficial effects of each of the above embodiments, so details will not be described herein again.

[0097] Although the present invention has been specifically shown and described with reference to the exemplary embodiments of the present invention, those of ordinary skill in the art will understand that various changes in form and details can be made herein without departing from the spirit and scope of the present invention as defined by the claims and their equivalents. The embodiments should be considered only in a descriptive sense and not for the purpose of limitation. Therefore, the scope of the present invention is not defined by the specific embodiments of the present invention, but by the claims, and all differences within this scope will be construed as being included in the present invention.

Claims

1. A tower barrel, characterized in that, the tower barrel includes a first tower barrel section (10) and a second tower barrel section (20) docked in the height direction of the tower barrel. The first tower barrel section (10) is provided with a plurality of first connection through holes (11) along the circumferential direction, and the second tower barrel section (20) is provided with a plurality of second connection through holes (21) along the circumferential direction. The plurality of first connection through holes (11) and the plurality of second connection through holes (21) are arranged in a staggered manner up and down. The tower barrel further includes an annular plate (30) and a plurality of arc-shaped plates (40). At the docking position of the first tower barrel section (10) and the second tower barrel section (20), the annular plate (30) is sleeved on the outer side of the tower barrel, and the plurality of arc-shaped plates (40) are arranged along the circumferential direction on the inner side of the tower barrel. A first fastener (51) passes through the arc-shaped plate (40), the first connection through hole (11) and is fixed to the annular plate (30), and a second fastener (52) passes through the arc-shaped plate (40), the second connection through hole (21) and is fixed to the annular plate (30).

2. The tower barrel according to claim 1, characterized in that, a plurality of first threaded holes (31) and a plurality of second threaded holes (32) are arranged on the circumference of the annular plate (30). The plurality of first threaded holes and the plurality of second threaded holes are staggered up and down. The plurality of first threaded holes (31) are respectively aligned with the plurality of first connection through holes (11), and the plurality of second threaded holes (32) are respectively aligned with the plurality of second connection through holes (21). The plurality of first fasteners (51) respectively pass through the arc-shaped plate (40), the first connection through hole (11) and are threadedly connected to the first threaded holes (31), and the plurality of second fasteners (52) respectively pass through the arc-shaped plate (40), the second connection through hole (21) and are threadedly connected to the second threaded holes (32).

3. The tower barrel according to claim 2, characterized in that, one ends of the first threaded holes (31) and the second threaded holes (32) facing the outer side of the tower barrel are closed, and one ends facing the inner side of the tower barrel are open.

4. The tower barrel according to claim 3, characterized in that, the annular plate (30) includes an annular plate main body (33) and a plurality of internal threaded columns (34). At positions corresponding to the first threaded holes (31) and the second threaded holes (32), a plurality of receiving holes (331) are respectively arranged on the annular plate main body (33). The internal threaded columns (34) are arranged in the receiving holes (331) and are connected to the annular plate main body (33) as a whole. The first threaded holes (31) and the second threaded holes (32) are respectively formed on the corresponding internal threaded columns (34).

5. The tower barrel according to any one of claims 1 to 4, characterized in that, the plurality of arc-shaped plates (40) are sequentially arranged in the circumferential direction of the tower barrel to be spliced into a ring.

6. The tower barrel according to any one of claims 1 to 4, characterized in that, In the circumferential direction of the tower barrel, two opposite side edges of the arc-shaped plate (40) are inclined with respect to the vertical direction, and adjacent arc-shaped plates (40) are in contact with each other at the side edges.

7. The tower barrel according to claim 6, characterized in that, the arc-shaped plate (40) is conical, trapezoidal, triangular or parallelogram-shaped; and / or in the circumferential direction of the tower barrel, two adjacent arc-shaped plates (40) are alternately inverted up and down.

8. The tower barrel according to claim 1, characterized in that, each arc-shaped plate (40) is provided with a first mounting hole (41) and a second mounting hole (42), the first mounting hole (41) and the second mounting hole (42) are arranged staggeredly up and down, the position of the first mounting hole (41) corresponds to the position of the first connection through hole (11), and the position of the second mounting hole (42) corresponds to the position of the second connection through hole (21).

9. The tower barrel according to claim 8, characterized in that, the connection line of the first mounting hole (41) and the second mounting hole (42) on each arc-shaped plate (40) forms an isosceles triangle.

10. The tower barrel according to claim 8 or 9, characterized in that, each arc-shaped plate (40) includes an arc-shaped plate main body (43) and a plurality of convex columns (44), at positions corresponding to the first mounting hole (41) and the second mounting hole (42), a plurality of receiving grooves are provided on the arc-shaped plate main body (43), the convex columns (44) are arranged in the receiving grooves and are integrally connected with the arc-shaped plate main body (43), and the first mounting hole (41) and the second mounting hole (42) are respectively formed on the corresponding convex columns (44).

11. A manufacturing method of a tower barrel, characterized in that, the method includes: providing a first tower barrel section (10), the first tower barrel section (10) is provided with a plurality of first connection through holes (11) along the circumferential direction; providing a second tower barrel section (20), the second tower barrel section (20) is provided with a plurality of second connection through holes (21) along the circumferential direction; arranging a ring plate (30) on the outer periphery of the end of one of the first tower barrel section (10) and the second tower barrel section (20), and making the one dock with the other of the first tower barrel section (10) and the second tower barrel section (20) in the height direction through the ring plate (30), and making a plurality of the first connection through holes (11) and a plurality of the second connection through holes (21) be arranged staggeredly up and down; arranging a plurality of arc-shaped plates (40) on the inner wall of the tower barrel corresponding to the docking position of the first tower barrel section (10) and the second tower barrel section (20); using a first fastener (51) to pass through the arc-shaped plate (40), the first connection through hole (11) and be fixedly connected with the ring plate (30), using a second fastener (52) to pass through the arc-shaped plate (40), the second connection through hole (21) and be fixedly connected with the ring plate (30), so that the tower barrel wall corresponding to the docking position is clamped between the ring plate (30) and a plurality of the arc-shaped plates (40), thereby connecting the first tower barrel section (10) and the second tower barrel section (20).

12. A wind turbine generator set, characterized in that, The wind turbine generator set includes a tower barrel as described in any one of claims 1 to 10 or a tower barrel manufactured by the manufacturing method of the tower barrel as described in claim 11.

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