Wind power tower and wind turbine generator system

Abstract

The application discloses a wind power tower and a wind turbine unit, which comprises a concrete cylinder section and a steel cylinder section. The concrete cylinder section comprises a straight cylinder section and a transition cylinder section. The straight cylinder section is arranged on a base. The transition cylinder section is arranged at the upper end of the straight cylinder section along the height direction of the straight cylinder section. The outer diameter of the transition cylinder section is equal to that of the straight cylinder section. The thickness of the straight cylinder section is t1, and the thickness of the transition cylinder section is t2. The ratio of t2 to t1 is greater than or equal to 2. The height of the transition cylinder section is h, and 1m is less than or equal to h and is less than or equal to 4m. The inner diameter of the transition cylinder section is d1. The steel cylinder section is arranged at the upper end of the transition cylinder section. The inner diameter of the steel cylinder section is d2, and d2 is greater than or equal to d1. The concrete cylinder section comprises the straight cylinder section, so that the structure of the straight cylinder section is simple, thereby reducing the construction difficulty and the construction cost of the whole wind power tower. In addition, the height of the transition cylinder section is relatively high, so that the transition cylinder section can bear a large stress, thereby ensuring that the overall structural strength of the concrete cylinder section meets the design use requirement.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power generation equipment, and in particular to a wind power tower and a wind turbine generator. BACKGROUND

[0002] The wind power tower is a support structure of a wind turbine head and is one of important component structures of the wind turbine generator. In the related art, in order to reduce the wind force on the upper end of the wind power tower and reduce the load of the wind power tower, the wind power tower is often formed in a shape in which the outer diameter size of the upper end is much smaller than the outer diameter size of the lower end, and in order to avoid the phenomenon that the diameter of the cross section of the wind power tower changes sharply and causes stress concentration, the wind power tower is often designed in a shape in which the diameter of the cross section gradually decreases from the lower end to the upper end. Considering the material cost, concrete is often used as the material of the lower half of the wind power tower, and steel is often used as the material of the upper half of the wind power tower. However, the concrete structure with the gradually decreasing diameter of the cross section has high manufacturing difficulty, resulting in high construction cost of the wind power tower. SUMMARY

[0003] The wind power tower and the wind turbine generator disclosed by the embodiments of the present application have the following beneficial effects.

[0004] In order to achieve the above-mentioned purpose, in a first aspect, the present application discloses a wind power tower, comprising:

[0005] a concrete cylinder section, the concrete cylinder section comprising a straight cylinder section and a transition cylinder section, the straight cylinder section being arranged on a base, the transition cylinder section being arranged on the upper end of the straight cylinder section along the height direction of the straight cylinder section, the outer diameter size of the transition cylinder section being equal to the outer diameter size of the straight cylinder section, the thickness of the straight cylinder section being t1, the thickness of the transition cylinder section being t2, t2 / t1≥2, the transition cylinder section having a height h, 1m≤h≤4m; and

[0006] a steel cylinder section, the steel cylinder section being arranged on the upper end of the transition cylinder section, the outer diameter of the steel cylinder section being smaller than the outer diameter of the transition cylinder section, and the inner diameter of the steel cylinder section being greater than or equal to the inner diameter of the transition cylinder section.

[0007] As an optional implementation, in the embodiments of the first aspect of the present application, 0.25m≤t1≤0.6m, 1m≤t2≤6m, the inner diameter of the transition cylinder section is d1, the outer diameter of the transition cylinder section is d3, 2m≤d1≤5m, and 6m≤d3≤15m.

[0008] As an optional embodiment, in an embodiment of the first aspect of the present invention, the concrete cylinder section is further provided with a reinforcement cylinder, which is located inside the straight cylinder section and connected between the transition cylinder section and the inner wall surface of the straight cylinder section; or, the reinforcement cylinder is located above the straight cylinder section and connected between the transition cylinder section and the straight cylinder section.

[0009] As an optional implementation, in an embodiment of the first aspect of the present invention, the wind turbine tower further includes a crossbeam, the crossbeam is located on the inner side of the reinforcement tube, and both ends of the crossbeam are respectively connected to the reinforcement tube.

[0010] As an optional implementation, in an embodiment of the first aspect of the present invention, a first prestressed steel bar is arranged in the circumferential direction in the reinforcing tube and / or the transition tube section.

[0011] As an optional embodiment, in an embodiment of the first aspect of the present invention, the steel cylinder section includes a first cylinder section and a second cylinder section. Along the height direction, the first cylinder section is arranged at the upper end of the transition cylinder section, and the second cylinder section is arranged at the upper end of the first cylinder section, and the structural strength of the first cylinder section is stronger than the structural strength of the second cylinder section.

[0012] As an optional embodiment, in an embodiment of the first aspect of the present invention, the first barrel section includes a flange seat and a connecting barrel section, the flange seat includes an inner ring part, a connecting part and an outer ring part arranged in sequence from the inside to the outside, the inner ring part and / or the outer ring part are fixedly connected to the upper end of the transition barrel section, the connecting barrel section is arranged on the connecting part, and the second barrel section is arranged on the connecting barrel section.

[0013] As an optional embodiment, in an embodiment of the first aspect of the present invention, the first barrel section further includes a plurality of stiffening ribs, and the plurality of stiffening ribs are arranged at intervals along the circumference of the connecting barrel section, and the stiffening ribs are connected between the connecting barrel section and the outer ring part, or, the stiffening ribs are connected between the connecting barrel section and the inner ring part.

[0014] As an optional implementation, in an embodiment of the first aspect of the present invention, the transition barrel section is provided with a first through hole;

[0015] The wind turbine tower also includes a second prestressed steel bar, one end of which is fixedly connected to the outer ring part or the inner ring part, and the other end of the second prestressed steel bar is used to pass through the first through hole and fixedly connected to the base, and the second prestressed steel bar is used to tighten the flange seat and the base.

[0016] In a first aspect, the application discloses a wind turbine, which comprises a base, a wind turbine head and a wind tower tube as described in the first aspect above, the straight tube section of the wind tower tube is arranged on the base, and the wind turbine head is arranged on the steel tube section of the wind tower tube.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] The wind tower tube and the wind turbine provided by the application have the following advantages: along the height direction of the concrete tube section, the shape and size of the cross section of the straight tube section included in the concrete tube section do not change, the straight tube section has a simple structure, low manufacturing difficulty and low manufacturing cost.

[0019] In addition, since the outer diameter size of the transition tube section is equal to the outer diameter size of the straight tube section, the transition tube section can be directly arranged on the upper end of the straight tube section, and since the thickness t1 of the straight tube section and the thickness t2 of the transition tube section satisfy t2 / t1≥2, that is, the thickness t2 of the transition tube section is greatly different from the thickness t1 of the straight tube section, the inner diameter size of the transition tube section is greatly different from the outer diameter size of the straight tube section, so that the inner diameter size d1 of the transition tube section satisfies d1≤d2, and thus the steel tube section can be directly arranged on the upper end of the transition tube section, that is, the difference between the outer diameter of the straight tube section and the inner diameter size of the steel tube section can be eliminated by the transition tube section, so that the steel tube section and the straight tube section are connected.

[0020] Further, since the outer diameter size of the transition tube section is greatly different from the inner diameter size of the steel tube section, the cross-sectional diameter of the wind tower tube sharply changes at the connection position between the transition tube section and the steel tube section, and thus the stress on the transition tube section is extremely large during use. Based on this, the height h of the transition tube section is set to 1m≤h≤4m, that is, the height of the transition tube section is relatively high, so as to enhance the structural strength of the transition tube section, so that the transition tube section can withstand a large stress, and thus the overall structural strength of the concrete tube section meets the design use requirement. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only show some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0022] Figure 1 is a structural schematic diagram of the wind tower tube (arranged on the base) disclosed in the first aspect of the embodiment of the application;

[0023] Figure 2 is a partial structural schematic diagram of the wind tower tube disclosed in the first aspect of the embodiment of the application;

[0024] Figure 3 is another structural partial schematic view of the wind power tower drum disclosed by the first aspect of the embodiment of the present application;

[0025] Figure 4 is another structural partial schematic view of the wind power tower drum disclosed by the first aspect of the embodiment of the present application;

[0026] Figure 5 is Figure 3 is a sectional view along the direction A-A in the above-mentioned figure;

[0027] Figure 6 is a structural schematic view of the concrete drum segment and the cross beam disclosed by the first aspect of the embodiment of the present application;

[0028] Figure 7 is Figure 3 is an enlarged schematic view of the position B in the above-mentioned figure;

[0029] Figure 8 is Figure 3 is a sectional view along the direction C-C in the above-mentioned figure;

[0030] Figure 9 is a structural schematic view of the wind turbine generator set disclosed by the second aspect of the embodiment of the present application;

[0031] Figure 10 is a partial enlarged schematic view of the wind turbine generator set disclosed by the second aspect of the embodiment of the present application.

[0032] Figure: 1, wind power tower drum; 10, concrete drum segment; 100, straight drum segment; 101, transition drum segment; 101a, first through hole; 101b, first threaded connection structure; 101c, second threaded connection structure; 102, reinforcing drum; 103, first prestressed steel bar; 11, steel drum segment; 110, first drum segment; 1101, flange seat; 1101a, inner ring part; 1101b, connecting part; 1101c, outer ring part; 1102, connecting drum segment; 1103, stiffening rib; 111, second drum segment; 12, cross beam; 120, first sub beam; 121, second sub beam; 13, second prestressed steel bar; 2, wind turbine generator set; 20, base; 200, basement; 201, second avoiding hole; 21, wind turbine head. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0035] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0036] In addition, the terms "mount", "set", "provided with", "connected", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In addition, the terms "first", "second", and the like are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0038] The technical solutions of the present application will be further described below in conjunction with the embodiments and the drawings.

[0039] Please refer to Figure 1 With Figure 2 is a structural schematic diagram of a wind power tower (provided on a base) disclosed by the first aspect of the embodiment of the present application, Figure 2 is a partial structural schematic diagram of the wind power tower disclosed by the first aspect of the embodiment of the present application, the first aspect of the embodiment of the present application discloses a wind power tower, which can be applied to a wind turbine generator set having a base 20, so that in actual construction, the wind power tower 1 can be arranged on the base 20 of the wind turbine generator set (for example, Figure 1As shown). Specifically, the wind turbine tower 1 includes a concrete cylinder section 10 and a steel cylinder section 11. The concrete cylinder section 10 includes a straight cylinder section 100 and a transition cylinder section 101. The straight cylinder section 100 is used to be arranged on the base 20. Along the height direction P of the straight cylinder section 100, the transition cylinder section 101 is arranged at the upper end of the straight cylinder section 100. The outer diameter of the transition cylinder section 101 is equal to the outer diameter of the straight cylinder section 100. The thickness of the straight cylinder section 100 is t1, and the thickness of the transition cylinder section 101 is t2, t2 / t1≥2, the transition cylinder section 101 has a height h, 1m≤h≤4m, the transition cylinder section 101 has an inner diameter size d1, the steel cylinder section 11 is arranged at the upper end of the transition cylinder section 101, and the outer diameter of the steel cylinder section 11 is smaller than the outer diameter of the transition cylinder section 101, and the steel cylinder section 11 has an inner diameter size d2, d2≥d1. Among them, Figure 1 and Figure 2 The height direction P is shown by an arrow.

[0040] By making the concrete cylinder section 10 include the straight cylinder section 100 and the shape and size of the cross section of the straight cylinder section 100 do not change along the height direction P of the concrete cylinder section 10, the structure of the straight cylinder section 100 is simple, the manufacturing difficulty is low, and the manufacturing cost is low.

[0041] In addition, since the outer diameter of the transition barrel section 101 and the straight barrel section 100 is equal to the outer diameter of the straight barrel section 100, the transition barrel section 101 can be directly arranged at the upper end of the straight barrel section 100. Since the thickness t1 of the straight barrel section 100 and the thickness t2 of the transition barrel section 101 satisfy t2 / t1≥2, for example, t2 / t1 can be 2, 2.5, 3, 3.5, 3.7, 4, 4.2, 4.5, 4.7, 5, 5.2, 5.5, 5.7, 6, 6.2, 6.5, 6.7, 7, 8, 9, 10, 15 or 20, etc. That is, the thickness t2 of the transition barrel section 101 may be significantly different from the thickness t1 of the straight barrel section 100. Therefore, the inner diameter dimension of the transition barrel section 101 is significantly different from the outer diameter dimension of the straight barrel section 100, so that the inner diameter dimension d1 of the transition barrel section 101 and the inner diameter dimension d2 of the steel barrel section 11 satisfy d1≤d2, so that the steel barrel section 11 can be directly arranged at the upper end of the transition barrel section 101. In other words, the difference between the outer diameter of the straight barrel section 100 and the inner diameter dimension of the steel barrel section 11 can be eliminated through the transition barrel section 101, so as to connect the steel barrel section 11 to the straight barrel section 100.

[0042] Further, since the outer diameter size of the transition cylinder segment 101 and the outer diameter size of the steel cylinder segment 11 are greatly different, the cross-sectional diameter of the wind power tower cylinder 1 changes sharply at the joint of the transition cylinder segment 101 and the steel cylinder segment 11, and thus the stress on the transition cylinder segment 101 is extremely large during use. The transition cylinder segment 101 provided in the embodiment has a height h, and in order to make the structural strength of the transition cylinder segment 101 higher so that the transition cylinder segment 101 can withstand greater stress, the overall structural strength of the concrete cylinder segment 10 meets the design use requirements. The height h of the transition cylinder segment 101 should be higher, and in order to save the material used by the transition cylinder segment 101, thereby reducing the construction cost of the wind power tower cylinder 1, the height h of the transition cylinder segment 101 should not be too high. Based on this, the height h of the transition cylinder segment 101 satisfies 1m≤h≤4m, for example, the height h can be 1m, 1.2m, 1.4m, 1.5m, 1.6m, 1.8m, 2m, 2.2m, 2.4m, 2.5m, 2.6m, 2.8m, 3m, 3.2m, 3.4m, 3.5m, 3.6m, 3.8m or 4m, etc.

[0043] It can be understood that the size of the transition cylinder segment 101 has a greater impact on the stress of each cylinder segment, and thus the size of the transition cylinder segment 101 is considered in the embodiment. Specifically, as described above, the outer diameter size of the transition cylinder segment 101 is equal to the outer diameter size of the straight cylinder segment 100, and the inner diameter size d1 of the transition cylinder segment 101 and the inner diameter size d2 of the steel cylinder segment 11 satisfy d1≤d2, so as to achieve the effect of eliminating the difference between the outer diameter of the straight cylinder segment 100 and the inner diameter size of the steel cylinder segment 11 through the transition cylinder segment 101, thereby connecting the steel cylinder segment 11 and the straight cylinder segment 100 through the transition cylinder segment 101. Therefore, it can be understood that the inner diameter size d1 of the transition cylinder segment 101 is determined by the inner diameter size d2 of the steel cylinder segment 11, the outer diameter size d3 of the transition cylinder segment 101 is determined by the outer diameter size of the straight cylinder segment 100, and the thickness t2 of the transition cylinder segment 101 is determined by the difference between the outer diameter size of the straight cylinder segment 100 and the inner diameter size d2 of the steel cylinder segment 11.

[0044] It can be understood that the larger the outer diameter size of each cylinder segment, the stronger the load capacity of each cylinder segment, the smaller the outer diameter size of each cylinder segment, the smaller the area affected by the wind force on each cylinder segment, and the less the construction material used by each cylinder segment, and the lower the construction cost. Therefore, the outer diameter size of each cylinder segment cannot be too large or too small. Based on this, optionally, the outer diameter size of the straight cylinder segment 100, i.e., the outer diameter size d3 of the transition cylinder segment 101, can satisfy 6m≤d3≤15m, for example, the outer diameter size of the straight cylinder segment 100, i.e., the outer diameter size d3 of the transition cylinder segment 101, can be 6m, 6.5m, 7m, 7.5m, 8m, 8.5m, 9m, 9.5m, 10m, 10.5m, 11m, 11.5m, 12m, 12.5m, 13m, 13.5m, 13m, 13.5m or 15m, etc.

[0045] Similarly, considering the balance between the load capacity, material cost and wind area of the steel cylinder segment 11, the inner diameter size d2 of the steel cylinder segment 11 can satisfy: 2m≤d2≤5m, and accordingly, the inner diameter size d1 of the transition cylinder segment 101 can satisfy: 2m≤d1≤5m under the premise of d1≤d2, for example, the inner diameter size d1 of the transition cylinder segment 101 can be 2m, 2.2m, 2.4m, 2.5m, 2.6m, 2.8m, 3m, 3.2m, 3.4m, 3.5m, 3.6m, 3.8m, 4m, 4.2m, 4.4m, 4.5m, 4.6m, 4.8m or 5m, etc.

[0046] In order to make the thickness t2 of the transition cylinder segment 101 achieve the effect of eliminating the difference between the outer diameter of the straight cylinder segment 100 and the inner diameter size of the steel cylinder segment 11, and at the same time, the thickness t2 of the transition cylinder segment 101 is not too thick to cause too much self-weight of the transition cylinder segment 101 and too much additional stress at the connection between the transition cylinder segment 101 and the straight cylinder segment 100, the thickness t2 of the transition cylinder segment 101 can satisfy: 1m≤t2≤6m, for example, the thickness t2 can be 1m, 1.5m, 2m, 2.5m, 3m, 3.5m, 4m, 4.5m, 5m, 5.5m or 6m, etc.

[0047] Next, the structures of the various parts of the wind power tower cylinder 1 will be described in detail in combination with the drawings.

[0048] Please refer to FIG. 1 and FIG. 2. Figures 1 to 4 As shown in FIG. 1 and FIG. 2, in order to further improve the structural strength of the transition cylinder segment 101 and further improve the load capacity of the transition cylinder segment 101, the first prestressed steel bars 103 can be arranged in the transition cylinder segment 101 along the circumferential direction I. It can be understood that the more the first prestressed steel bars 103 arranged in the transition cylinder segment 101, the higher the structural strength of the transition cylinder segment 101, and therefore, the first prestressed steel bars 103 arranged in the transition cylinder segment 101 can be multiple, and the multiple first prestressed steel bars 103 are arranged in the height direction P.

[0049] In some embodiments, in order to make the structural strength of the straight cylinder segment 100 higher to meet the use requirements, the thickness t1 of the straight cylinder segment 100 should be thicker, and in order to save the material used by the straight cylinder segment 100 and thus reduce the construction cost of the wind power tower cylinder 1, the thickness t1 of the straight cylinder segment 100 should not be too thick, and based on this, the thickness t1 of the straight cylinder segment 100 can satisfy: 0.25m≤t1≤0.6m, for example, the thickness t1 can be 0.25m, 0.3m, 0.35m, 0.4m, 0.45m, 0.5m, 0.55m or 0.6m, etc.

[0050] Since the inner and outer diameters of the straight cylinder section 100 remain unchanged along the height direction P, the straight cylinder section 100 can be optionally constructed on the base 20 in a slip-form manner, which is low in construction difficulty and directly forms the straight cylinder section 100 on the base 20, and the connection between the straight cylinder section 100 and the base 20 is stable.

[0051] In other embodiments, the straight cylinder section 100 can also be constructed by precasting a plurality of cylinder sections and connecting the plurality of cylinder sections. It can be understood that since the inner and outer diameters of the straight cylinder section 100 remain unchanged along the height direction P, the plurality of cylinder sections can be equal in size, i.e., the same specification precast cylinder sections can be produced in a larger batch, so that the precast cylinder sections are lower in manufacturing cost, thereby reducing the overall construction cost of the wind turbine tower 1.

[0052] In some embodiments, the straight cylinder section 100 and the transition cylinder section 101 can be integrally formed, or the straight cylinder section 100 and the transition cylinder section 101 can be separately provided. In an optional example, the transition cylinder section 101 is formed by formwork pouring at the top end of the straight cylinder section 100, so that the straight cylinder section 100 and the transition cylinder section 101 are integrally formed, the connection between the straight cylinder section 100 and the transition cylinder section 101 is stable, and the connection between the straight cylinder section 100 and the transition cylinder section 101 can withstand greater stress.

[0053] Please refer to Figure 3 and Figure 4 In some embodiments, the concrete cylinder section 10 can also be provided with a reinforcing cylinder 102. The reinforcing cylinder 102 is located inside the straight cylinder section 100 and connected between the inner wall surfaces of the transition cylinder section 101 and the straight cylinder section 100, or the reinforcing cylinder 102 is located above the straight cylinder section 100 and connected between the transition cylinder section 101 and the straight cylinder section 100, so that the reinforcing cylinder 102 increases the effective force transmission area between the transition cylinder section 101 and the straight cylinder section 100, strengthens the connection between the transition cylinder section 101 and the straight cylinder section 100, and assists in the conduction of the load between the transition cylinder section 101 and the straight cylinder section 100, thereby releasing part of the stress acting on the connection between the transition cylinder section 101 and the straight cylinder section 100, and relieving the excessive stress at the connection between the transition cylinder section 101 and the straight cylinder section 100. In the above embodiments, Figure 3 and Figure 4 In the above embodiments, the junctions of the reinforcing cylinder 102 with the transition cylinder section 101 and the straight cylinder section 100 are shown by dashed lines, Figure 3 In the above embodiments, the reinforcing cylinder 102 is located inside the straight cylinder section 100 and connected between the inner wall surfaces of the transition cylinder section 101 and the straight cylinder section 100, Figure 4As shown in FIG. 1, the reinforcing cylinder 102 is located above the straight cylinder segment 100, and the reinforcing cylinder 102 is connected between the transition cylinder segment 101 and the straight cylinder segment 100. It can be understood that the dashed line is only used to show two different situations of the junctions of the reinforcing cylinder 102 and the transition cylinder segment 101 and the straight cylinder segment 100, respectively, and does not represent the physical structure, nor constitutes a limitation on the positions of the junctions of the reinforcing cylinder 102 and the transition cylinder segment 101 and the straight cylinder segment 100, respectively.

[0054] For the convenience of description, the radial direction of the concrete cylinder segment 10 is defined as the radial direction R, and the circumferential direction around the central axis O of the concrete cylinder segment 10 is defined as the circumferential direction I, Figure 3 With Figure 4 the coordinate axes in FIG. 1 show the height direction P, the radial direction R, and the circumferential direction I.

[0055] Optionally, the cross section of the reinforcing cylinder 102, which is cut by a plane parallel to the height direction P and the radial direction R, can be square, rectangular, triangular, sector-shaped, or other shapes, such as Figure 3 With Figure 4 shown in FIG. 1, Figure 3 As shown in FIG. 1, the cross section of the reinforcing cylinder 102 is rectangular, Figure 4 As shown in FIG. 1, the cross section of the reinforcing cylinder 102 is triangular. It can be understood that as long as the reinforcing cylinder 102 can be connected between the transition cylinder segment 101 and the straight cylinder segment 100, the cross section of the reinforcing cylinder 102 is not specifically limited in the embodiment.

[0056] In some embodiments, the reinforcing cylinder 102 can also be made of concrete, and can be formed by formwork at the top end of the straight cylinder segment 100, so that the reinforcing cylinder 102 is integrally formed with the straight cylinder segment 100, thereby increasing the connection strength between the reinforcing cylinder 102 and the straight cylinder segment 100.

[0057] As Figure 4As shown, in order to further improve the structural strength of the reinforced cylinder 102, so as to further improve the load capacity of the reinforced cylinder 102, in an optional embodiment, a first prestressed steel bar 103 can be arranged in the circumferential direction I in the reinforced cylinder 102. It can be understood that the more the first prestressed steel bars 103 arranged in the reinforced cylinder 102, the higher the structural strength of the reinforced cylinder 102, and therefore, the first prestressed steel bars 103 arranged in the reinforced cylinder 102 can be multiple, and the multiple first prestressed steel bars 103 are arranged in the height direction P. It can be understood that from the foregoing, the first prestressed steel bars 103 can also be arranged in the transition cylinder section 101, and therefore, when the first prestressed steel bars 103 are arranged in the wind power tower cylinder 1, they can be arranged in the transition cylinder section 101 to improve the structural strength of the transition cylinder section 101, or they can be arranged in the reinforced cylinder 102 to improve the structural strength of the reinforced cylinder 102, or they can be arranged in both the transition cylinder section 101 and the reinforced cylinder 102 to improve the structural strength of both the transition cylinder section 101 and the reinforced cylinder 102. The specific arrangement can be set according to the actual situation, and this embodiment does not make specific limitations.

[0058] In another optional embodiment, the wind power tower cylinder 1 can also include a cross beam 12, which is located on the inner side of the reinforced cylinder 102, and the two ends of the cross beam 12 are connected to the reinforced cylinder 102, thereby improving the structural strength of the reinforced cylinder 102 through the cross beam 12. Specifically, the cross beam 12 can be a steel beam with good hardness and toughness, so that the cross beam 12 can be used to bear a larger load while the deformation is smaller, so that the overall structural shape of the cross beam 12 and the reinforced cylinder 102 is more stable. Further, the reinforced cylinder 102 can be pre-buried with multiple threaded structures, and the cross beam 12 can be connected to the threaded structures to be connected to the reinforced cylinder 102 through the threaded structures, thereby facilitating the installation of the cross beam 12 on the reinforced cylinder 102 by the operator.

[0059] Please refer to Figure 5 and Figure 6 Optionally, the cross beam 12 can be multiple, so as to increase the structural strength of the cross beam 12 by increasing the number of the cross beam 12. Specifically, the multiple cross beams 12 can be arranged in the radial direction R of the wind power tower cylinder 1 (as shown in Figure 5 ), or the multiple cross beams 12 can include multiple first sub-beams 120 and multiple second sub-beams 121, the multiple first sub-beams 120 are arranged in the radial direction R of the wind power tower cylinder 1, the multiple second sub-beams 121 are arranged in the radial direction R of the wind power tower cylinder 1, the first sub-beams 120 and the second sub-beams 121 intersect and connect (as shown in Figure 6 ), so that the multiple cross beams 12 are connected to form a whole, so that the structural strength of the cross beam 12 is stronger.

[0060] Of course, it can be understood that, in order to improve the structural strength of the reinforcing cylinder 102, the design of the above-mentioned cross beam 12 and the design of the above-mentioned first prestressed steel bar 103 can exist at the same time, for example, the first prestressed steel bar 103 can be arranged on the reinforcing cylinder 102 at the same time, and the above-mentioned cross beam 12 can also be arranged inside the reinforcing cylinder 102.

[0061] In some embodiments, as known from the foregoing, the straight cylinder section 100 and the transition cylinder section 101 can be integrally poured or separately poured, and because the volume of the transition cylinder section 101 is large, the weight of the transition cylinder section 101 is large, and in the process of formwork pouring and forming, the load borne by the formwork is large, therefore, a supporting structure needs to be arranged below the formwork to support the formwork, reduce the deformation caused by the large load borne by the formwork, thereby avoiding the shape of the transition cylinder section 101 formed by pouring from being greatly changed to affect the stress and performance of the transition cylinder section 101. At the same time, as described above, the cross beam 12 is connected to the inside of the reinforcing cylinder 102 to improve the structural strength of the reinforcing cylinder 102. Based on this, in the process of pouring and forming the transition cylinder section 101 by formwork, the cross beam 12 can also be used as a supporting structure for the formwork, that is, the formwork can be arranged on the cross beam 12 for pouring of concrete, so that the transition cylinder section 101 is directly formed above the straight cylinder section 100 and the reinforcing cylinder 102, thereby the connection between the transition cylinder section 101 and the straight cylinder section 100 and the reinforcing cylinder 102 is more stable, and there is no need to additionally arrange a supporting structure, and the construction process of the concrete cylinder section 10 is simpler. It can be seen that the arrangement of the cross beam 12 not only plays a role in structural reinforcement of the reinforcing cylinder 102, but also provides support for the pouring of the transition cylinder section 101, which is beneficial to simplify the construction process of the wind power tower cylinder 1.

[0062] Please refer to Figure 7 and Figure 8 Because the inner diameter size d2 of the steel cylinder section 11 is much smaller than the outer diameter size d3 of the transition cylinder section 101, the stress at the connection between the steel cylinder section 11 and the transition cylinder section 101 is large. Based on this, in some embodiments, the steel cylinder section 11 can include a first cylinder section 110 and a second cylinder section 111, along the height direction P, the first cylinder section 110 is arranged at the upper end of the transition cylinder section 101, and the second cylinder section 111 is arranged at the upper end of the first cylinder section 110, and the structural strength of the first cylinder section 110 is stronger than that of the second cylinder section 111, so that in the steel cylinder section 11, the first cylinder section 110 used to connect with the transition cylinder section 101 can be adapted to bear a large stress, while the structural strength of the remaining part of the steel cylinder section 11, that is, the second cylinder section 111, can meet the design requirements and will not be too strong, so that the structure of the second cylinder section 111 is more reasonable and the cost is more economical.

[0063] Specifically, the first barrel section 110 may include a flange seat 1101 and a connecting barrel section 1102. The flange seat 1101 may include an inner ring portion 1101a, a connecting portion 1101b, and an outer ring portion 1101c arranged in sequence from the inside to the outside. The inner ring portion 1101a and / or the outer ring portion 1101c are fixedly connected to the upper end of the transition barrel section 101. The connecting barrel section 1102 is arranged on the connecting portion 1101b. The second barrel section 111 is arranged on the connecting barrel section 1102. Figure 7 The dashed lines in the figure illustrate the boundaries between the connecting portion 1101b and the inner ring portion 1101a, the outer ring portion 1101c, and the connecting barrel section 1102. It should be understood that the dashed lines are merely used to illustrate one aspect of the boundaries between the connecting portion 1101b and the inner ring portion 1101a, the outer ring portion 1101c, and the connecting barrel section 1102, and do not represent the physical structure, nor do they define the locations of the boundaries between the connecting portion 1101b and the inner ring portion 1101a, the outer ring portion 1101c, and the connecting barrel section 1102.

[0064] Optionally, the inner ring portion 1101a can be fixedly connected to the upper end of the transition barrel section 101, or the outer ring portion 1101c can be fixedly connected to the upper end of the transition barrel section 101, or both the inner ring portion 1101a and the outer ring portion 1101c can be fixedly connected to the upper end of the transition barrel section 101 to fix the first barrel section 110 to the upper end of the transition barrel section 101. Taking the example of the inner ring portion 1101a and the outer ring portion 1101c both being fixedly connected to the upper end of the transition barrel section 101, the upper end of the transition barrel section 101 may be pre-buried with a plurality of first threaded connection structures 101b and a plurality of second threaded connection structures 101c. The plurality of first threaded connection structures 101b are arranged at intervals I along the circumference of the transition barrel section 101 corresponding to the inner ring portion 1101a, and the inner ring portion 1101a is fixedly connected to the first threaded connection structure 101b. The plurality of second threaded connection structures 101c are arranged at intervals I along the circumference of the transition barrel section 101 corresponding to the outer ring portion 1101c, and the outer ring portion 1101c is fixedly connected to the second threaded connection structure 101c, thereby achieving fixed connection of the first barrel section 110 to the upper end of the transition barrel section 101.

[0065] In some embodiments, the first cylinder section 110 can further comprise a plurality of stiffening ribs 1103 arranged along the circumferential direction I of the connecting cylinder section 1102, the stiffening ribs 1103 being connected between the connecting cylinder section 1102 and the outer ring portion 1101c, or the stiffening ribs 1103 being connected between the connecting cylinder section 1102 and the inner ring portion 1101a. By arranging the stiffening ribs 1103, the structural strength of the connecting cylinder section 1102 and the flange base 1101 as a whole can be enhanced, thereby enhancing the structural strength of the first cylinder section 110 as a whole. It can be appreciated that, in order to conduct the stress at the connection between the first cylinder section 110 and the transition cylinder section 101 to the outer periphery of the transition cylinder section 101 as much as possible, so as to disperse the stress to the straight cylinder section 100 as much as possible, thereby reducing the stress received by the transition cylinder section 101, the plurality of stiffening ribs 1103 can be connected between the connecting cylinder section 1102 and the outer ring portion 1101c.

[0066] Further, in order to enhance the connection strength and stability between the first cylinder section 110, the transition cylinder section 101, the straight cylinder section 100 and the base 20, so as to form the first cylinder section 110, the transition cylinder section 101 and the straight cylinder section 100 into a more stable whole structure, and to enhance the connection stability between the straight cylinder section 100 and the base 20, a pre-stressed steel bar can be arranged to tighten the first cylinder section 110, the transition cylinder section 101, the straight cylinder section 100 and the base 20.

[0067] Specifically, the transition cylinder section 101 can be provided with a first through hole 101a, and the wind power tower cylinder 1 can further comprise a second pre-stressed steel bar 13, one end of the second pre-stressed steel bar 13 being fixedly connected to the inner ring portion 1101a or the outer ring portion 1101c, and the other end of the second pre-stressed steel bar 13 being arranged through the first through hole 101a and fixedly connected to the base 20. The second pre-stressed steel bar 13 is used to tighten and connect the flange base 1101 and the base 20, thereby connecting the first cylinder section 110, the transition cylinder section 101, the straight cylinder section 100 and the base 20, and achieving the effects of enhancing the strength and stability of the whole structure of the wind power tower cylinder 1 and enhancing the connection stability between the wind power tower cylinder 1 and the base 20.

[0068] Further, the second prestressed steel bars 13 can be multiple, and the multiple second prestressed steel bars 13 are arranged along the circumference I at intervals, and correspondingly, the first through holes 101a can also be multiple, and the multiple first through holes 101a are arranged along the circumference I at intervals, so as to increase the number of the second prestressed steel bars 13 to increase the tension force applied by the second prestressed steel bars 13 between the flange seat 1101 and the base 20, so as to further improve the strength, stability of the overall structure of the wind power tower drum 1 and the connection stability of the wind power tower drum 1 and the base 20. In addition, by arranging the multiple second prestressed steel bars 13 along the circumference I at intervals, the tension force applied by the second prestressed steel bars 13 can be balanced, so that the stress of the overall wind power tower drum 1 and the overall wind power tower drum 1 and the base 20 is balanced, and the structural stability of the overall wind power tower drum 1 and the overall wind power tower drum 1 and the base 20 is good.

[0069] It can be understood that when the second prestressed steel bars 13 are used to tension the connection between the outer ring part 1101c and the base 20, the stress generated in the transition drum section 101 due to the tension force applied by the second prestressed steel bars 13 is more easily conducted towards the outer circumference of the transition drum section 101, and thus is more easily released to the straight drum section 100, so that the stress received by the transition drum section 101 is smaller.

[0070] By arranging the concrete drum section 10 to include the straight drum section 100, and the shape and size of the cross section of the straight drum section 100 do not change along the height direction P of the concrete drum section 10, the structure of the straight drum section 100 is simple, the manufacturing difficulty is low, and the manufacturing cost is low, so as to reduce the construction difficulty and construction cost of the overall wind power tower drum 1.

[0071] In addition, by arranging the transition drum section 101, and arranging the outer diameter size of the transition drum section 101 to be equal to the outer diameter size of the straight drum section 100, and arranging the inner diameter size d1 of the transition drum section 101 and the inner diameter size d2 of the steel drum section 11 to satisfy d1≤d2, the difference between the outer diameter of the straight drum section 100 and the inner diameter size of the steel drum section 11 can be eliminated through the transition drum section 101, so as to realize the connection of the steel drum section 11 and the straight drum section 100.

[0072] Further, since the cross-sectional diameter of the wind power tower drum 1 changes sharply at the connection between the transition drum section 101 and the steel drum section 11, the stress received by the transition drum section 101 is extremely large during use. Based on this, the transition drum section 101 provided by the embodiment is arranged to satisfy 1m≤h≤3m for the height h of the transition drum section 101, i.e., the height h of the transition drum section 101 is relatively high, so that the transition drum section 101 can withstand a larger stress, so that the overall structural strength of the concrete drum section 10 meets the design use requirements.

[0073] Please refer to Figure 9 and Figure 10 ,Figure 9 is a structural schematic diagram of a wind turbine generator set disclosed by the second aspect of the embodiment of the present application, Figure 10 is a partial enlarged schematic diagram of the wind turbine generator set disclosed by the second aspect of the embodiment of the present application, the second aspect of the embodiment of the present application discloses a wind turbine generator set 2, comprising a base 20, a wind turbine head 21 and the wind tower drum 1 as described in the first aspect above, the straight cylinder segment 100 of the wind tower drum 1 is arranged on the base 20, and the wind turbine head 21 is arranged on the steel cylinder segment 11 of the wind tower drum 1. The base 20 is at least partially arranged underground to fix the wind tower drum 1 and the wind turbine head 21 to the ground, the manufacturing difficulty of the wind tower drum 1 is low, and the manufacturing cost is low, so that the manufacturing difficulty of the whole wind turbine generator set 2 is low, and the manufacturing cost is low.

[0074] As described above, in order to strengthen the connection strength and stability between the wind tower drum 1 and the base 20, so as to form a more stable whole structure of the wind tower drum 1 and the base 20, the wind tower drum 1 and the base 20 can be pulled tightly by arranging the prestressed steel bars.

[0075] Specifically, the base 20 can be provided with a basement 200 and a second through hole 201, two ends of the second through hole 201 are respectively communicated with the interior space of the basement 200 and the transition cylinder segment 101. One end of the second prestressed steel bar 13 is arranged in the first through hole 101a of the transition cylinder segment 101 and fixedly connected to the inner ring part 1101a or the outer ring part 1101c, and the other end of the second prestressed steel bar 13 is arranged in the second through hole 201 and extends into the basement 200, so that the operator can pull the second prestressed steel bar 13 tightly in the basement 200, and the second prestressed steel bar 13 is fixedly connected to the top surface of the basement 200, thereby realizing the installation of the second prestressed steel bar 13.

[0076] Alternatively, the other end of the second prestressed steel bar 13 can be anchoringly connected to the hole wall of the second through hole 201, thereby increasing the effective connection area of the second prestressed steel bar 13 and the basement 200, enhancing the connection stability, and enabling the second prestressed steel bar 13 and the basement 200 to be used for jointly bearing greater stress.

[0077] The wind tower drum and the wind turbine generator set disclosed by the embodiments of the present application are introduced in detail above, the principles and implementation manners of the present application are described by applying specific examples in this paper, and the above embodiment description is only used to help understand the wind tower drum and the wind turbine generator set of the present application and the core idea thereof; meanwhile, for the general technical personnel in the field, the specific implementation manners and application ranges will be changed according to the idea of the present application, and in view of the above, the content of the specification should not be understood as the limitation of the present application.

Claims

1. A wind turbine tower, characterized in that: include: A concrete cylinder section, comprising a straight cylinder section, a transition cylinder section, and a reinforcement cylinder; the straight cylinder section is configured to be disposed on a base; the transition cylinder section is disposed at the upper end of the straight cylinder section along the height direction of the straight cylinder section; the outer diameter of the transition cylinder section is equal to the outer diameter of the straight cylinder section; the thickness of the straight cylinder section is t1; the thickness of the transition cylinder section is t2; t2 / t1 ≥ 2; the transition cylinder section has a height h, 1 m ≤ h ≤ 4 m; when the reinforcement cylinder is located inside the straight cylinder section, the reinforcement cylinder is connected between the transition cylinder section and the inner wall surface of the straight cylinder section; or, when the reinforcement cylinder is located above the straight cylinder section, the reinforcement cylinder is connected between the transition cylinder section and the straight cylinder section; a steel cylinder section, the steel cylinder section being disposed at the upper end of the transition cylinder section, the outer diameter of the steel cylinder section being smaller than the outer diameter of the transition cylinder section, and the inner diameter of the steel cylinder section being greater than or equal to the inner diameter of the transition cylinder section; and a crossbeam, the crossbeam being located inside the reinforcement tube, and the two ends of the crossbeam being respectively connected to the reinforcement tube; Wherein, first prestressed steel bars are arranged in the circumferential direction in the reinforcing tube and / or the transition tube section.

2. The wind turbine tower according to claim 1, characterized in that: 0.25m≤t1≤0.6m, 1m≤t2≤6m, the inner diameter of the transition cylinder section is d1, the outer diameter of the transition cylinder section is d3, 2m≤d1≤5m, 6m≤d3≤15m.

3. The wind turbine tower according to claim 1 or 2, characterized in that: The steel cylinder section includes a first cylinder section and a second cylinder section. Along the height direction, the first cylinder section is arranged at the upper end of the transition cylinder section, and the second cylinder section is arranged at the upper end of the first cylinder section, and the structural strength of the first cylinder section is stronger than that of the second cylinder section.

4. The wind turbine tower according to claim 3, characterized in that: The first barrel section includes a flange seat and a connecting barrel section. The flange seat includes an inner ring part, a connecting part and an outer ring part arranged in sequence from the inside to the outside. The inner ring part and / or the outer ring part are fixedly connected to the upper end of the transition barrel section. The connecting barrel section is arranged on the connecting part, and the second barrel section is arranged on the connecting barrel section.

5. The wind turbine tower according to claim 4, characterized in that: The first barrel section further includes a plurality of stiffening ribs, which are arranged at intervals along the circumference of the connecting barrel section. The stiffening ribs are connected between the connecting barrel section and the outer ring portion, or between the connecting barrel section and the inner ring portion.

6. The wind turbine tower according to claim 4, characterized in that: The transition cylinder section is provided with a first through hole; The wind turbine tower also includes a second prestressed steel bar, one end of which is fixedly connected to the outer ring part or the inner ring part, and the other end of the second prestressed steel bar is used to pass through the first through hole and fixedly connected to the base, and the second prestressed steel bar is used to tighten the flange seat and the base.

7. A wind turbine generator set, characterized in that: It comprises a base, a wind turbine generator head and a wind turbine tower according to any one of claims 1 to 6, wherein the straight cylinder section of the wind turbine tower is arranged on the base, and the wind turbine generator head is arranged on the steel cylinder section of the wind turbine tower.

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