Wind power tower drum and middle anchoring section thereof

Abstract

The embodiment of the utility model discloses a wind power tower drum and the middle anchoring section thereof, the middle anchoring section is used for connecting a first tower drum section and a second tower drum section of the wind power tower drum, the middle anchoring section comprises an anchoring section main body and an anchoring cattle leg part, and the anchoring section main body is provided with a plurality of through hole channels penetrating through the drum wall of the anchoring section main body along the length direction of the anchoring section main body; the anchoring cattle leg part is arranged on the inner circumferential surface of the anchoring section main body and extends inwards, a plurality of anchoring hole channels are formed in the anchoring cattle leg part, the anchoring hole channels are used for allowing second in-vivo prestressed tendons of the wind power tower barrel to penetrate through, and the top ends of the second in-vivo prestressed tendons are anchored to the upper end face of the anchoring cattle leg part. According to the wind power tower drum, the first internal prestressed tendons and the second internal prestressed tendons are adopted for tensioning the prestress of the concrete tower drum twice, and the prestress requirement of the whole tower drum is met. The middle anchoring section is arranged in the middle of the concrete tower drum, so that the problem of compression fatigue of the wind power tower drum is effectively solved, and meanwhile, the use amount of prestressed tendons is also reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power, in particular to a wind power tower. Background Art

[0002] Traditional onshore wind turbine towers usually use single-tube steel towers, steel trusses, steel-concrete composite towers, etc. With the large-scale wind turbines, traditional wind turbine towers generally have problems such as unreasonable tension node settings and insufficient bearing capacity, which makes it difficult to meet the load requirements of large units such as 10MW unit platforms. In addition, due to the high fatigue load level of the unit, the prestressing level needs to be controlled, which puts forward higher requirements for the prestressing arrangement of the wind turbine tower. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the utility model provides a middle anchoring section of a wind power tower.

[0004] The embodiment of the utility model also proposes a wind power tower having the intermediate anchoring section.

[0005] The middle anchoring section of the wind turbine tower of the embodiment of the utility model is used to connect the first tower section and the second tower section of the wind turbine tower. The middle anchoring section includes an anchoring section main body, which is a cylindrical structure. The anchoring section main body is provided with a plurality of through-holes penetrating its cylinder wall along its length direction, and the plurality of through-holes are arranged at intervals along the circumference of the anchoring section main body, and the through-holes are used to penetrate the first internal prestressed tendons of the wind turbine tower; an anchoring corbel portion, which is arranged on the inner circumference of the anchoring section main body and extends inwardly, and is provided with a plurality of anchoring holes, and the plurality of anchoring holes are arranged at intervals on the circumference of the anchoring section main body, and the top end opening of the anchoring hole is located on the upper end face of the anchoring corbel portion, and the anchoring hole is used to penetrate the second internal prestressed tendons of the wind turbine tower, and the top end of the second internal prestressed tendons is anchored on the upper end face of the anchoring corbel portion.

[0006] In some embodiments, a plurality of mounting holes are provided in the cylindrical wall of the anchoring section body, the bottom ends of the plurality of anchoring holes are connected one-to-one with the top ends of the plurality of mounting holes, an angle is formed between the axial direction of the anchoring hole and the axial direction of the mounting hole, and the bottom end opening of the mounting hole is located at the bottom end of the anchoring section body.

[0007] In some embodiments, the plurality of through holes and the plurality of mounting holes are alternately arranged in a circumferential direction of the anchoring segment body.

[0008] In some embodiments, an angle is formed between the axial direction of the anchoring hole and the axial direction of the through hole, and the bottom ends of the plurality of anchoring holes are connected to the plurality of through holes in a one-to-one correspondence.

[0009] In some embodiments, there are multiple anchoring corbels, and the multiple anchoring corbels are arranged at intervals in the circumferential direction of the anchoring section body, and each of the anchoring corbels is provided with at least one anchoring channel.

[0010] In some embodiments, the middle anchoring section is straight-cylindrical, the through-hole extends along the axial direction of the middle anchoring section, and there is an angle between the axial direction of the anchoring hole and the axial direction of the middle anchoring section, and the angle is less than or equal to 15 degrees.

[0011] A wind turbine tower according to an embodiment of the utility model comprises: a concrete tower section, wherein the concrete tower section comprises a first tower section, an intermediate anchoring section and a second tower section which are sequentially connected from top to bottom, wherein the intermediate anchoring section is the intermediate anchoring section described in any one of the above embodiments, wherein the first tower section is provided with a plurality of first prestressed tensioning holes spaced apart in the circumferential direction of the concrete tower section, and the second tower section is provided with a plurality of second prestressed tensioning holes spaced apart in the circumferential direction of the concrete tower section; a plurality of first internal prestressed tendons, wherein the first internal prestressed tendons are passed through the corresponding first prestressed tensioning holes, the through holes and the second prestressed tensioning holes to perform prestressed tensioning on the first tower section, the intermediate anchoring section and the second tower section; a plurality of second internal prestressed tendons, wherein the second internal prestressed tendons are passed through the corresponding second prestressed tensioning holes and the anchoring holes to perform prestressed tensioning on the second tower section and the intermediate anchoring section, and the top end of the second internal prestressed tendons is anchored on the upper end surface of the anchoring corbel.

[0012] The wind turbine tower of the utility model embodiment uses the first body prestressed tendons and the second body prestressed tendons to tension the prestress of the concrete tower twice, which can minimize the prestress application level and meet the prestress requirements of the entire tower under the premise of ensuring construction safety. An intermediate anchoring section is set in the middle of the concrete tower, and a protruding anchoring corbel is provided on the inner side of the intermediate anchoring section, and the top of the second body prestressed tendons is anchored on the anchoring corbel, which effectively solves the problem of compressive fatigue of the wind turbine tower and also reduces the amount of prestressed tendons.

[0013] In some embodiments, the concrete tower section includes a plurality of concrete tower pipe segments connected in sequence in the vertical direction, wherein at least some of the concrete tower pipe segments are ultra-high performance concrete pipe segments.

[0014] In some embodiments, the concrete tower section includes a plurality of straight barrel sections and at least one transition section, wherein the plurality of straight barrel sections are arranged in sequence in the vertical direction, and two adjacent straight barrel sections in the vertical direction are connected by the transition section, and the diameter of the upper straight barrel section is smaller than the diameter of the lower straight barrel section, and at least a portion of the transition section is constructed as a conical section whose diameter gradually decreases from bottom to top.

[0015] In some embodiments, there are multiple transition sections, including: a conical transition section, a first channel for passing prestressed tendons is provided in the conical transition section, and the top of the first channel is located on the inner side of its bottom end; an intermediate transition section, a second channel for passing prestressed tendons is provided in the intermediate transition section, and the top of the second channel is located on the inner side of its bottom end, the thickness of the intermediate transition section is greater than that of the conical transition section, the height of the intermediate transition section is less than that of the conical transition section, and the angle between the second channel and the vertical direction is greater than the angle between the first channel and the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a perspective view of a wind power tower according to an embodiment of the utility model.

[0017] Figure 2 It is a cross-sectional view of the middle anchoring section of the wind power tower according to an embodiment of the utility model.

[0018] Figure 3 It is a top view of the middle anchoring section of the wind power tower according to an embodiment of the utility model.

[0019] Figure 4 It is a cross-sectional view of a tapered transition section of a wind power tower according to an embodiment of the utility model.

[0020] Figure 5 It is a cross-sectional view of the middle transition section of the wind power tower according to an embodiment of the utility model.

[0021] Reference numerals:

[0022] Wind power tower 100,

[0023] Concrete tower section 110, first tower section 111, middle anchoring section 112, anchoring section body 1121, through-hole 11211, installation hole 11212, anchoring corbel 1122, anchoring hole 11221, embedded anchor 1123, second tower section 113, straight section 114, transition section 115, tapered transition section 1151, first hole 11511, middle transition section 1152, second hole 11521, embedded thin-walled steel pipe 11522, concrete tower tube section 116, top anchoring section 117,

[0024] Steel transition section 120 , steel tower section 130 , tower foundation 140 . DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0026] Below Figure 1-Figure 5 The wind turbine tower 100 of the present utility model is described as an example. Figure 1 and Figure 2 As shown, the wind turbine tower 100 includes a concrete tower section 110, a plurality of first internal prestressed tendons and a plurality of second internal prestressed tendons.

[0027] The concrete tower section 110 includes a first tower section 111 , a middle anchoring section 112 and a second tower section 113 which are sequentially connected from top to bottom, that is, the middle anchoring section 112 connects the first tower section 111 and the second tower section 113 of the wind turbine tower 100 .

[0028] The middle anchoring section 112 specifically includes an anchoring section body 1121 and an anchoring corbel 1122. The anchoring section body 1121 is a cylindrical structure, and includes a plurality of through-holes 11211, which penetrate the cylindrical wall of the anchoring section body 1121 along the length direction of the anchoring section body 1121, and the plurality of through-holes 11211 are arranged at intervals along the circumference of the anchoring section body 1121, and the through-holes 11211 are used to penetrate the first internal prestressed tendons. The anchoring corbel portion 1122 is arranged on the inner circumference of the anchoring section main body 1121 and extends inwardly. A plurality of anchoring holes 11221 are arranged on the anchoring corbel portion 1122. The plurality of anchoring holes 11221 are arranged at intervals in the circumferential direction of the anchoring section main body 1121. The top opening of the anchoring hole 11221 is located on the upper end surface of the anchoring corbel portion 1122. The anchoring hole 11221 is used for passing the second internal prestressed tendons.

[0029] The first tower section 111 is provided with a plurality of first prestressed tensioning channels spaced apart in the circumferential direction of the concrete tower section 110 , and the second tower section 113 is provided with a plurality of second prestressed tensioning channels spaced apart in the circumferential direction of the concrete tower section 110 .

[0030] The first internal prestressed tendons are passed through the corresponding first prestressed tensioning holes, through holes 11211 and second prestressed tensioning holes, and prestressed tensioning is performed on the first tower section 111, the middle anchoring section 112 and the second tower section 113. In other words, the first internal prestressed tendons are passed through the first prestressed tensioning holes of the first tower section 111, the second prestressed tensioning holes of the second tower section 113 and the through holes 11211 of the middle anchoring section 112. After tensioning, the top end of the first internal prestressed tendons extends upward from the top end of the first tower section 111 and is anchored, and the bottom end of the first internal prestressed tendons extends downward from the bottom end of the second tower section 113 and is anchored.

[0031] The second internal prestressed tendons are passed through the corresponding second prestressed tensioning holes and anchor holes 11221 to perform prestressing tensioning on the second tower section 113 and the middle anchor section 112, and the top of the second internal prestressed tendons is anchored at the upper end surface of the anchoring corbel 1122. In other words, the second internal prestressed tendons are passed through the second prestressed tensioning holes of the second tower section 113, and the top of the second internal prestressed tendons passes upward through the anchor hole 11221 of the middle anchor section 112 and is anchored at the upper end surface of the anchoring corbel 1122, and the bottom end of the second internal prestressed tendons extends downward from the bottom end of the second tower section 113 and is anchored.

[0032] The wind turbine tower of the utility model embodiment uses the first body prestressed tendons and the second body prestressed tendons to tension the prestress of the concrete tower twice, which can minimize the prestress application level and meet the prestress requirements of the entire tower under the premise of ensuring construction safety. An intermediate anchoring section is set in the middle of the concrete tower, and a protruding anchoring corbel is provided on the inner side of the intermediate anchoring section, and the top of the second body prestressed tendons is anchored on the anchoring corbel, which effectively solves the problem of compressive fatigue of the wind turbine tower and also reduces the amount of prestressed tendons.

[0033] In some embodiments, the multiple second prestressed tensioning channels arranged in the second tower section 113 are divided into two groups, wherein the top ends of several second prestressed tensioning channels in the first group of second prestressed tensioning channels are connected one-to-one with the multiple through channels 11211 of the middle anchoring section 112, and the prestressed tendons in the first body extend downward from the through channels 11211 into the corresponding second prestressed tensioning channels, and extend downward along the second prestressed tensioning channels.

[0034] like Figure 2 and Figure 3As shown, a plurality of mounting holes 11212 are provided in the wall of the anchoring section body 1121, the bottom ends of the plurality of anchoring holes 11221 are connected one-to-one with the top ends of the plurality of mounting holes 11212, an angle is formed between the axial direction of the anchoring hole 11221 and the axial direction of the mounting hole 11212, and the bottom end opening of the mounting hole 11212 is located at the bottom end of the anchoring section body 1121. The plurality of mounting holes 11212 are connected one-to-one with the top ends of a plurality of second prestressed tensioning holes in the second group of second prestressed tensioning holes, the plurality of second internal prestressed tendons are correspondingly arranged in the second group of second prestressed tensioning holes, the top ends of the second internal prestressed tendons extend upward into the corresponding mounting holes 11212, and are anchored to the upper end surface of the anchoring corbel 1122 after passing through the corresponding anchoring holes 11221.

[0035] Furthermore, on the circumference of the middle anchoring section 112, at least one through hole 11211 is arranged between two adjacent installation holes 11212, and then a plurality of first internal prestressed tendons and a plurality of second internal prestressed tendons are cross-arranged on the circumference of the anchoring section main body 1121. After tensioning, the concrete tower section 110 is subjected to more uniform stress.

[0036] As an example, in Figure 3 In the illustrated embodiment, ten installation holes 11212 and thirty through holes 11211 are arranged at intervals in the circumferential direction of the middle anchoring section 112, and three through holes 11211 are arranged between two adjacent installation holes 11212. Ten groups of second internal prestressed tendons are respectively arranged in the ten installation holes 11212 and anchored on the upper end faces of the corresponding anchoring corbels 1122. Thirty groups of first internal prestressed tendons are respectively arranged in the thirty through holes 11211, extend upward through the through holes 11211, and are anchored on the top of the concrete tower section 110.

[0037] exist Figure 2 In the embodiment shown, the middle anchoring section 112 is a straight cylinder, the through hole 11211 extends along the axial direction of the middle anchoring section 112, and an angle is formed between the axial direction of the anchoring hole 11221 and the axial direction of the middle anchoring section 112 (the axial direction of the through hole 11211). In addition, a pre-embedded anchor 1123 for anchoring the top end of the second internal prestressed tendon is provided at the top of the anchoring hole 11221.

[0038] Optionally, the angle between the axial direction of the anchoring hole 11221 and the axial direction of the middle anchoring section 112 is less than or equal to 15 degrees. If the angle between the axial direction of the anchoring hole 11221 and the axial direction of the middle anchoring section 112 is greater than 15 degrees, it is easy to cause the prestress loss to increase, and during tensioning, the force load on the anchoring leg part 1122 is large, which is easy to cause the anchoring leg part 1122 structure to be damaged.

[0039] Preferably, the angle between the axial direction of the anchoring hole 11221 and the axial direction of the middle anchoring section 112 is less than or equal to 12 degrees. For example, the angle between the axial direction of the anchoring hole 11221 and the axial direction of the middle anchoring section 112 is 10 degrees.

[0040] In other examples, there is an angle between the axial direction of the anchoring hole 11221 and the axial direction of the through hole 11211, the bottom ends of the multiple anchoring holes 11221 are connected to the multiple through holes 11211 in a one-to-one correspondence, and the top end of the second internal prestressed tendon extends upward from the bottom of the middle anchoring section 112 into the corresponding through hole 11211, and then extends into the corresponding anchoring hole 11221 and extends upward along the anchoring hole 11221, thereby anchoring on the upper end surface of the anchoring corbel 1122. The first internal prestressed tendon and the second internal prestressed tendon are jointly arranged in the second prestressed tensioning hole, reducing the number of the second prestressed tensioning holes, and reducing the manufacturing difficulty and manufacturing cost of the second tower section 113.

[0041] In some embodiments, Figure 3 As shown, the middle anchoring section 112 has a plurality of anchoring corbels 1122, and the plurality of anchoring corbels 1122 are arranged at intervals in the circumferential direction of the anchoring section main body 1121, and each anchoring corbel 1122 is provided with at least one anchoring channel 11221, that is, a plurality of second internal prestressed tendons are anchored one by one to the upper end surfaces of the plurality of anchoring corbels 1122. Such an arrangement reduces the concrete material used in the middle anchoring section 112 and reduces the manufacturing cost of the middle anchoring section 112.

[0042] Below Figure 1-5 The wind turbine tower 100 according to the embodiment of the present invention is described as an example.

[0043] like Figure 1 As shown, the wind turbine tower 100 includes a concrete tower section 110 , a steel transition section 120 and a steel tower section 130 .

[0044] At least part of the pipe section of the concrete tower section 110 is an ultra-high performance concrete pipe section, that is, at least part of the sections of the concrete tower section 110 are made of ultra-high performance concrete (UHPC). The concrete tower section 110 includes a plurality of straight barrel sections 114 and at least one transition section 115. The plurality of straight barrel sections 114 are arranged in sequence in the vertical direction, and two adjacent straight barrel sections 114 in the vertical direction are connected by the transition section 115. Moreover, in the two adjacent straight barrel sections 114 in the vertical direction, the diameter of the upper straight barrel section 114 is smaller than the diameter of the lower straight barrel section 114, and at least a part of the transition section 115 is constructed as a tapered section whose diameter gradually decreases from bottom to top, so as to transitionally connect two adjacent straight barrel sections 114 in the vertical direction with different diameters.

[0045] The steel tower section 130 is located above the concrete tower section 110. The steel tower section 130 is connected to the top of the concrete tower section 110 through the steel transition section 120. The steel tower section 130 is used to install the wind turbine. In other words, the bottom of the steel transition section 120 is connected to the top of the concrete tower section 110, and the steel tower section 130 is connected to the top of the steel transition section 120.

[0046] The wind turbine tower 100 adopts a steel-ultra-high performance concrete composite structure. The bottom of the wind turbine tower 100 is a concrete tower section 110, at least part of which is composed of ultra-high performance concrete prefabricated components. The middle part is transitioned by a steel transition section 120, and the top is composed of a steel tower section 130. The wind turbine tower 200 of the utility model embodiment makes full use of the strength of ultra-high performance concrete (UHPC). Under the premise of meeting the structural safety, ultra-high performance concrete has lower dosage and better performance than traditional concrete. The tower section may not have structural steel bars or less structural steel bars. Therefore, the concrete tower section 110 of the utility model embodiment is thinner and lighter than the traditional tower. The lightweight structure can reduce the resonance of the wind turbine tower 100, can adapt to higher load levels, meet more stringent resonance frequency requirements, and achieve a balance between bearing capacity and frequency requirements. The steel tower section 130 connected at the top further increases the height of the wind turbine tower 100. The steel tower section has low cost and high construction efficiency.

[0047] The installation steps of the wind power tower 100 are as follows: after the concrete tower section 110 and the steel transition section 120 are installed, prestressed strands are threaded and tensioned, and then the steel tower section 130 is connected to the steel transition section 120 through an L-shaped flange.

[0048] exist Figure 1 In the example shown, the concrete tower section 110 includes four straight sections 114 and three transition sections 115. In the vertical direction, the straight sections 114 and the transition sections 115 are arranged alternately, and the structure of the concrete tower section 110 from bottom to top is straight section 114-transition section 115-straight section 114-transition section 115-straight section 114-transition section 115-straight section 114. In addition, the diameters of the four straight sections 114 increase step by step from top to bottom. The middle anchoring section 112 is located in the middle of the straight section 114 at the top.

[0049] It should be noted that in other examples, the number of straight sections 114 and transition sections 115 of the concrete tower section 110 can be other numbers, for example, the straight section 114 is two sections, the transition section 115 is one section, and the structure of the concrete tower section 110 from bottom to top is straight section 114-transition section 115-straight section 114.

[0050] like Figure 1As shown, the concrete tower section 110 includes a plurality of concrete tower tube sections 116 connected in sequence in the vertical direction, wherein the four straight sections 114 each include a plurality of concrete tower tube sections 116 connected in sequence in the vertical direction. It can be understood that the diameters of the plurality of concrete tower tube sections 116 in each straight section 114 are the same.

[0051] Among the several concrete tower pipe segments 116 of the concrete tower section 110 , at least some of the concrete tower pipe segments 116 are ultra-high performance concrete pipe segments, that is, at least some of the concrete tower pipe segments 116 are made of ultra-high performance concrete (UHPC).

[0052] Optionally, the plurality of concrete tower pipe segments 116 of the concrete tower section 110 are all ultra-high performance concrete pipe segments.

[0053] Optionally, among the several concrete tower tube segments 116 of the concrete tower section 110, a portion of the concrete tower tube segments 116 are ultra-high performance concrete tube segments, and another portion of the concrete tower tube segments 116 are high-strength concrete tube segments and / or ordinary concrete tube segments. In practical applications, the concrete tower tube segments 116 can be reasonably combined and arranged according to the strength calculation results of the concrete tower section 110 to form the concrete tower section 110. For example, among the three adjacent concrete tower tube segments 116 of the concrete tower section 110, one is an ultra-high performance concrete tube segment, one is a high-strength concrete tube segment, and the other is an ordinary concrete tube segment.

[0054] Specifically, Figure 1 As shown, the transition section 115 includes a tapered transition section 1151 and an intermediate transition section 1152. There are two tapered transition sections 1151 and one intermediate transition section 1152, and the intermediate transition section 1152 is located between the two tapered transition sections 1151 in the vertical direction.

[0055] like Figure 4 As shown, the diameter of the tapered transition section 1151 gradually increases from top to bottom. A first hole 11511 for passing prestressed tendons is provided in the tapered transition section 1151. The top of the first hole 11511 is located inside the bottom, that is, the first hole 11511 gradually tilts from bottom to top toward the central axis of the tapered transition section 1151, thereby achieving the transition of the prestressed tendons. Figure 4 In the example shown, the first channel 11511 is an inclined channel having an angle with the axial direction of the tapered transition section 1151 .

[0056] like Figure 5As shown, a pre-buried thin-walled steel pipe 11522 is provided in the middle transition section 1152. The pre-buried thin-walled steel pipe 11522 defines a second channel 11521 for passing prestressed tendons. The top of the second channel 11521 is located on the inner side of its bottom. The height of the middle transition section 1152 is smaller than the conical transition section 1151, and the thickness of the middle transition section 1152 is greater than the conical transition section 1151 to ensure sufficient strength. The angle between the second channel 11521 and the vertical direction is greater than the angle between the first channel 11511 and the vertical direction. Figure 5 In the example shown, the second channel 11521 is an inclined channel with a certain curvature, so the middle transition section 1152 can achieve a larger diameter change within a lower height, saving material consumption.

[0057] like Figure 1 As shown, the concrete tower section 110 also includes a top anchoring section 117 , which is disposed above and connected to the topmost concrete tower pipe section 116 , and the top end of the first internal prestressed tendon is anchored at the top of the top anchoring section 117 .

[0058] like Figure 1 As shown, the wind turbine tower 100 includes a tower foundation 140 , the bottom of the concrete tower section 110 is arranged on and connected to the tower foundation 140 , and the bottom ends of the first internal prestressed tendons and the second internal prestressed tendons are both anchored on the tower foundation 140 .

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0063] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An intermediate anchoring section of a wind turbine tower, characterized in that: The middle anchoring section is used to connect the first tower section and the second tower section of the wind turbine tower, and the middle anchoring section includes: An anchoring section body, the anchoring section body is a cylindrical structure, the anchoring section body is provided with a plurality of through-holes penetrating its cylinder wall along its length direction, the plurality of through-holes are arranged at intervals along the circumference of the anchoring section body, and the through-holes are used to penetrate the first internal prestressed tendons of the wind power tower; Anchoring corbel, the anchoring corbel is arranged on the inner circumferential surface of the anchoring section body and extends inwardly, the anchoring corbel is provided with a plurality of anchoring holes, the plurality of anchoring holes are arranged at intervals in the circumferential direction of the anchoring section body, the top opening of the anchoring hole is located on the upper end surface of the anchoring corbel, the anchoring hole is used for passing the second internal prestressed tendons of the wind turbine tower, the top end of the second internal prestressed tendons is anchored on the upper end surface of the anchoring corbel.

2. The middle anchoring section of the wind turbine tower according to claim 1, characterized in that: A plurality of mounting holes are arranged in the cylinder wall of the anchoring section body, the bottom ends of the plurality of anchoring holes are connected one by one with the top ends of the plurality of mounting holes, an angle is formed between the axial direction of the anchoring hole and the axial direction of the mounting hole, and the bottom end opening of the mounting hole is located at the bottom end of the anchoring section body.

3. The middle anchoring section of the wind turbine tower according to claim 2, characterized in that: The plurality of through holes and the plurality of mounting holes are alternately arranged in the circumferential direction of the anchoring section body.

4. The middle anchoring section of the wind turbine tower according to claim 1, characterized in that: An included angle is formed between the axial direction of the anchoring hole and the axial direction of the through hole, and the bottom ends of the plurality of anchoring holes are connected to the plurality of through holes in a one-to-one correspondence.

5. The middle anchoring section of a wind turbine tower according to any one of claims 1 to 4, characterized in that: There are multiple anchoring corbels, which are arranged at intervals in the circumferential direction of the anchoring section body, and each of the anchoring corbels is provided with at least one anchoring channel.

6. The middle anchoring section of the wind turbine tower according to claim 1, characterized in that: The middle anchoring section is a straight cylinder type, the through hole extends along the axial direction of the middle anchoring section, and there is an angle between the axial direction of the anchoring hole and the axial direction of the middle anchoring section, and the angle is less than or equal to 15 degrees.

7. A wind power tower, characterized in that: include: A concrete tower section, the concrete tower section comprising a first tower section, an intermediate anchoring section and a second tower section which are sequentially connected from top to bottom, wherein the intermediate anchoring section is the intermediate anchoring section according to any one of claims 1 to 6, the first tower section is provided with a plurality of first prestressed tensioning channels which are spaced apart in the circumferential direction of the concrete tower section, and the second tower section is provided with a plurality of second prestressed tensioning channels which are spaced apart in the circumferential direction of the concrete tower section; A plurality of first internal prestressed tendons, wherein the first internal prestressed tendons are inserted into the corresponding first prestressed tensioning holes, the through holes and the second prestressed tensioning holes to perform prestressed tensioning on the first tower section, the middle anchoring section and the second tower section; A plurality of second internal prestressed tendons are provided in the corresponding second prestressed tensioning holes and the anchoring holes to perform prestressed tensioning on the second tower section and the middle anchoring section, and the top ends of the second internal prestressed tendons are anchored on the upper end surface of the anchoring corbel.

8. The wind turbine tower according to claim 7, characterized in that: The concrete tower section includes a plurality of concrete tower pipe sections which are sequentially connected in the vertical direction, wherein at least some of the concrete tower pipe sections are ultra-high performance concrete pipe sections.

9. The wind turbine tower according to claim 7, characterized in that: The concrete tower section includes a plurality of straight sections and at least one transition section. The plurality of straight sections are arranged in sequence in the vertical direction. Two adjacent straight sections in the vertical direction are connected by the transition section. The diameter of the upper straight section is smaller than the diameter of the lower straight section. At least a portion of the transition section is constructed as a conical section whose diameter gradually decreases from bottom to top.

10. The wind turbine tower according to claim 9, characterized in that: There are multiple transition sections, and the transition sections include: A conical transition section, wherein a first hole for passing prestressed tendons is provided in the conical transition section, and the top end of the first hole is located inside the bottom end thereof; An intermediate transition section is provided with a second channel for passing prestressed tendons, the top of the second channel is located on the inner side of its bottom end, the thickness of the intermediate transition section is greater than that of the conical transition section, the height of the intermediate transition section is less than that of the conical transition section, and the angle between the second channel and the vertical direction is greater than the angle between the first channel and the vertical direction.

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