New reinforced steel tower structure and wind turbine generator set

Abstract

The utility model provides a novel stiffened steel tower structure and a wind turbine generator set, wherein the novel stiffened steel tower structure comprises a plurality of tower assemblies that can be assembled, each tower assembly comprising a tower body, a plurality of annular stiffeners connected to the inner wall of the tower body, and a plurality of vertical stiffeners; a plurality of first connection assemblies are arranged between two adjacent annular stiffeners; a second connection assembly is arranged at the intersection of the annular stiffeners and the vertical stiffeners; a first docking plate and a second docking plate are arranged at both ends of the vertical stiffeners, respectively, for connecting with the second docking plate and the first docking plate of the upper and lower adjacent tower assemblies. This embodiment can improve the connection strength between the vertical stiffeners and the annular stiffeners and the tower body by arranging the first connection assembly and the second connection assembly. The first docking assembly and the second docking assembly can improve the connection strength of adjacent tower assemblies, thereby improving the reliability of the novel stiffened steel tower structure.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine towers, in particular to a novel stiffened steel tower structure. Background Art

[0002] In wind power projects, the wind turbine tower is the supporting structure of the wind turbine generator set. The steel tower is made of rolled steel plates. Its main function is to support the weight of the unit and convert wind energy into electrical energy.

[0003] The height of the steel tower depends on the size of the wind turbine and the expected wind energy resources, and can reach tens of meters or even hundreds of meters. Therefore, the steel tower needs to have greater rigidity and strength to meet the design requirements.

[0004] In order to meet the above requirements, the diameter of the steel vertebral tube tower frame of the relevant tower tube is getting larger and larger, the steel wall thickness is increasing, and the amount of steel used is increasing, which greatly increases the production and installation costs.

[0005] Therefore, a new type of steel tower is needed to solve the above problems. Utility Model Content

[0006] The content of this utility model is used to introduce the concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this disclosure is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0007] The utility model provides a novel stiffened steel tower structure and a wind turbine generator set to solve the technical problems mentioned in the above background technology part.

[0008] In a first aspect, the utility model provides a novel stiffened steel tower structure, comprising a plurality of assembleable tower assemblies, wherein:

[0009] Each of the tower assemblies comprises a tower body, a plurality of annular reinforcing ribs connected to the inner wall of the tower body, and a plurality of vertical reinforcing ribs, wherein the plurality of annular reinforcing ribs are arranged at intervals in the vertical direction, and the plurality of vertical reinforcing ribs are arranged around the axis of the tower body;

[0010] A plurality of first connection components are arranged between two adjacent annular reinforcement ribs, wherein the first connection components are buckled to the vertical reinforcement ribs and connected to the inner wall of the tower body;

[0011] A second connection component is provided at the intersection of the annular reinforcement rib and the vertical reinforcement rib, and the second connection component is buckled to the intersection and connected to the inner wall of the tower body;

[0012] The two ends of the vertical reinforcing rib are respectively provided with a first butt joint plate and a second butt joint plate for connecting with the second butt joint plate and the first butt joint plate of the upper and lower adjacent tower assemblies.

[0013] Optionally, the first connecting component includes a groove adapted to the cross-section of the vertical reinforcing rib, the bottom surface of the groove is engaged with the upper surface of the vertical reinforcing rib, and two side walls of the groove are connected to the tower body.

[0014] Optionally, the groove is formed by splicing two symmetrically arranged first L-shaped plates, and a connecting plate is fixed to the first end of each of the first L-shaped plates. In the assembled state, the two connecting plates are tightly connected by bolts; the second end of each of the first L-shaped plates is connected to a first reinforcing plate extending outward, and the first reinforcing plate is connected to the tower body.

[0015] Optionally, the second connecting component includes a cross groove adapted to the intersection of the annular reinforcement rib and the vertical reinforcement rib, the bottom surface of the cross groove is engaged with the upper surface of the intersection, and the side wall of the cross groove is connected to the tower body.

[0016] Optionally, the cross groove is formed by splicing four second L-shaped plates, the first end of each of the second L-shaped plates is connected to the first end of the third L-shaped plate extending inward, and the second end of the third L-shaped plate is also connected to the fourth L-shaped plate; in the assembled state, the second L-shaped plates are engaged with the side walls of the intersection; the third L-shaped plate is engaged with the upper surface of the intersection; the fourth L-shaped plate is tightly engaged with two adjacent fourth L-shaped plates by bolts; the second end of the second L-shaped plate is connected to a second reinforcing plate extending outward, and the second reinforcing plate is connected to the tower body.

[0017] Optionally, angle steels are welded to both ends of each of the vertical reinforcement ribs, and the angle steels are also welded to the inner wall of the tower body.

[0018] Optionally, the first butt joint plate includes a first plate body fixed to the angle steel at the upper end of the vertical reinforcing rib, and a plurality of protrusions are fixed to the upper end of the first plate body.

[0019] Optionally, the second docking plate includes a second plate body fixed to the angle steel at the lower end of the vertical reinforcement rib, and the lower end of the second plate body is provided with a plurality of recessed portions adapted to the plurality of protrusions. In the assembled state, the plurality of protrusions are inserted into the recessed portions one by one.

[0020] Optionally, each of the protrusions is provided with a first through hole; the second plate body is provided with a second through hole penetrating the inner recess, and in the assembled state, bolts pass through the first through hole and the second through hole, so that the first docking plate and the second docking plate are fastened and connected.

[0021] In a second aspect, the utility model further provides a wind turbine generator set, comprising a connected wind turbine, a new stiffened steel tower structure and a foundation, wherein the new stiffened steel tower structure is a new stiffened steel tower structure as described in any embodiment of the first aspect.

[0022] The above embodiments of the utility model have the following beneficial effects: through the novel stiffened steel tower structure of some embodiments of the utility model, on the basis of staggered arrangement of multiple annular stiffeners and multiple vertical stiffeners, the first connection assembly can further enhance the connection strength of the vertical stiffeners. The second connection assembly can also enhance the connection strength between the intersection and the tower body, thereby enhancing the strength of each tower assembly.

[0023] The new reinforced steel tower structure is assembled from multiple tower components, which facilitates the transportation of materials and the construction process. The first connecting plate and the second connecting plate can further enhance the connection strength of two adjacent tower components on the basis of the commonly used flange connection, thereby improving the overall stability of the new reinforced steel tower structure and thus improving the reliability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A cross-sectional view of an embodiment of a wind turbine generator set of the utility model;

[0026] Figure 2 It is a structural schematic diagram of an embodiment of the novel stiffened steel tower structure of the utility model;

[0027] Figure 3 A top view of a first connecting assembly of the present invention;

[0028] Figure 4 It is a front view of the first connecting component of the utility model;

[0029] Figure 5 It is a structural schematic diagram of an embodiment of the second connecting assembly of the utility model;

[0030] Figure 6 This is a structural schematic diagram of another embodiment of the second connecting assembly of the utility model;

[0031] Figure 7 It is a structural schematic diagram of an embodiment of the first docking plate of the utility model;

[0032] Figure 8 This is a schematic diagram of the structure after the first docking plate of the utility model is installed;

[0033] Fig. 9 It is a structural schematic diagram of an embodiment of the second docking plate of the utility model;

[0034] Fig.10 It is a schematic structural diagram of the second docking plate of the utility model after installation.

[0035] Description of reference numerals:

[0036] 1: tower body; 11: flange;

[0037] 2: Annular reinforcement;

[0038] 3: vertical reinforcement; 31: angle steel;

[0039] 4: first connecting assembly; 41: first L-shaped plate; 42: connecting plate; 43: first reinforcing plate;

[0040] 5: second connecting assembly; 51: second L-shaped plate; 52: third L-shaped plate; 53: fourth L-shaped plate; 54: second reinforcing plate;

[0041] 61: first docking plate; 611: first plate body; 612: raised portion; 613: first through hole;

[0042] 62: second docking plate; 621: second plate body; 622: inner recess; 623: second through hole;

[0043] 7: Wind turbine;

[0044] 8: Basics. DETAILED DESCRIPTION

[0045] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] 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" and the like indicating directions or positional relationships are based on the directions 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 device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0049] First see Figure 1 and Figure 2 , Figure 1 A cross-sectional view of an embodiment of a wind turbine generator set of the utility model; Figure 2 FIG. 1 is a schematic diagram of a structure of an embodiment of the novel reinforced steel tower structure of the utility model. Figure 1 and Figure 2 As shown, the novel stiffened steel tower structure is assembled from a plurality of tower assemblies. Flanges 11 may be provided at the upper and lower ends of each tower assembly, and the flanges 11 of two adjacent tower assemblies are fixedly connected by bolts. Those skilled in the art may determine the height and diameter of each of the above tower assemblies based on parameters such as the height or diameter of the novel stiffened steel tower structure.

[0050] Each tower assembly includes a tower body 1, a plurality of annular reinforcing ribs 2 welded to the inner wall of the tower body 1, and a plurality of vertical reinforcing ribs 3. The tower body 1 can be formed into a cylindrical structure by welding after cutting the steel plate into a curved shape by a rolling bending machine.

[0051] The plurality of annular reinforcing ribs 2 are arranged at intervals along the vertical direction. The plurality of vertical reinforcing ribs 3 are arranged around the axis of the tower body 1. In actual work, the vertical reinforcing ribs 3 are usually welded first, and then the annular reinforcing ribs 2 are divided into a plurality of arc-shaped pieces and welded between adjacent vertical reinforcing ribs 3. Therefore, the annular reinforcing ribs 2 and the vertical reinforcing ribs 3 form a plurality of intersections. As an example, the annular reinforcing ribs 2 and the vertical reinforcing ribs 3 can be perforated I-beams.

[0052] It should be noted that those skilled in the art can determine the number and spacing of the annular reinforcement ribs 2 and the vertical reinforcement ribs 3 according to the height and diameter of the tower body 1 .

[0053] In order to further enhance the connection strength between the vertical reinforcement rib 3 and the tower body 1, one or more first connection components 4 may be provided in the section of the vertical reinforcement rib 3 between two adjacent annular reinforcement ribs 2. In the assembled state, the first connection components 4 are buckled onto the vertical reinforcement rib 3 and welded to the inner wall of the tower body 1.

[0054] See next Figure 3 and Figure 4 And continue to read Figure 2 , Figure 3 A top view of a first connecting assembly of the present invention; Figure 4 The first connecting component 4 of the utility model can include a groove, the shape of which is adapted to the cross section of the vertical reinforcing rib 3. In the assembled state, the groove is buckled onto the vertical reinforcing rib 3, the bottom surface of the groove is engaged with the upper surface of the vertical reinforcing rib 3, and the ends of the two side walls of the groove are welded to the tower body 1.

[0055] Furthermore, the groove can also be formed by splicing two symmetrically arranged first L-shaped plates 41. Figure 3 and Figure 4 The first end ( Figure 4 The second end (right end) of the first L-shaped plate 41 is fixed with a connecting plate 42. Figure 4 A first reinforcing plate 43 extending outward is fixedly provided at the left end of the Figure 2 As shown, in the assembled state, the two connecting plates 42 are tightly connected by bolts, so that the two first L-shaped plates 41 are spliced ​​to form the above-mentioned groove. Each first L-shaped plate 41 is respectively connected to the upper surface and the side of the vertical reinforcement rib 3. The above-mentioned first reinforcement plate 43 is welded to the inner wall of the tower body 1.

[0056] By setting the groove of the first connecting component 4 separately, the adaptability of the first connecting component 4 can be improved. The reason is that in actual construction, the width of the vertical reinforcing rib 3 may have errors, or welding slag or debris may remain on both sides, which will cause the groove to be unable to be properly buckled on the vertical reinforcing rib 3. By bolting the two connecting plates 42, the width of the groove can be adaptively adjusted, thereby improving the flexibility of the first connecting component 4.

[0057] See next Figure 5 and Figure 6 And continue to read Figure 2 , Figure 5 It is a structural schematic diagram of an embodiment of the second connecting assembly of the utility model; Figure 6 FIG. 1 is a structural diagram of another embodiment of the second connecting assembly of the utility model; Figure 2 As shown, the intersection of the annular reinforcement rib 2 and the vertical reinforcement rib 3 is provided with a second connection component 5, which is buckled to the intersection and connected to the inner wall of the tower body 1. Figure 5 The second connection assembly 5 may include a cross groove adapted to the shape of the intersection. In the assembled state, the bottom surface of the cross groove engages with the upper surface of the intersection, and the top of the side wall of the cross groove is welded to the tower body 1.

[0058] Furthermore, the cross groove can be formed by splicing four second L-shaped plates 51. Figure 6 As shown, the first end ( Figure 6 The upper end shown in FIG. 1 and the first end of the third L-shaped plate 52 ( Figure 6 The third L-shaped plate 52 is connected to the inner wall of the third L-shaped plate 52 shown in the figure, and the third L-shaped plate 52 extends toward the middle of the intersection. The second end ( Figure 6 The outer wall of the third L-shaped plate 52 shown in the figure is also connected to the fourth L-shaped plate 53. The fourth L-shaped plate 53 extends in a direction perpendicular to the third L-shaped plate 52. In the assembled state, the four second L-shaped plates 51 are engaged with the side walls of the intersection, the four third L-shaped plates 52 are engaged with the upper surface of the intersection, and the fourth L-shaped plate 53 is tightly engaged with two adjacent fourth L-shaped plates 53 by bolts. Further, the second end ( Figure 6 A second reinforcing plate 54 extending outward is connected to the lower end of the tower (as shown), and the second reinforcing plate 54 is welded to the tower body 1.

[0059] Similarly, by setting the cross groove of the second connection component 5 separately, the adaptability of the second connection component 5 can be improved. The reason is that in actual construction, the size of the intersection may not be uniform due to the situation of welds, residual welding slag or debris. In this way, the cross groove cannot be properly buckled on the intersection. By bolting the four fourth L-shaped plates 53, the size of the cross groove can be adaptively adjusted, thereby improving the flexibility of the second connection component 5.

[0060] The two ends of the vertical reinforcement rib 3 are respectively provided with a first butt joint plate 61 and a second butt joint plate 62, which are used to connect with the second butt joint plate 62 and the first butt joint plate 61 of the upper and lower adjacent tower components. Figure 7 , Figure 8 , Fig. 9 and Fig.10 To explain, Figure 7 It is a structural schematic diagram of an embodiment of the first docking plate of the utility model; Figure 8 This is a schematic diagram of the structure after the first docking plate of the utility model is installed; Fig. 9 It is a structural schematic diagram of an embodiment of the second docking plate of the utility model; Fig.10 It is a schematic structural diagram of the second docking plate of the utility model after installation.

[0061] like Figure 7 As shown, the first docking plate 61 includes a first plate body 611 and three protrusions 612 disposed on the upper end of the first plate body 611. Each protrusion 612 is provided with a first through hole 613. Fig. 9 As shown, the second docking plate 62 includes a second plate body 621 corresponding to the shape of the first plate body 611. Three inner recesses 622 are provided at the bottom of the second plate body 621, and the inner recesses 622 are adapted to the protrusions 612. Three second through holes 623 are also provided on the second plate body 621, and each second through hole 623 passes through a corresponding inner recess 622.

[0062] Figure 8 Shown is the top of the lower tower assembly. Fig.10 The bottom of the upper tower assembly is shown. Figure 8 and Fig.10 As shown, angle steels 31 can be provided at both ends of the vertical reinforcement ribs 3. The angle steels 31 are respectively welded to the vertical reinforcement ribs 3 and the inner wall of the tower body 1, further strengthening the vertical reinforcement ribs 3 and providing a basis for installing the first butt joint plate 61 and the second butt joint plate 62.

[0063] That is to say, except for the top and bottom tower components, the angle steels 31 above the other tower components are welded to the bottom of the first plate 611, and the angle steels 31 below the tower components are welded to the upper end of the second plate 621. The first docking plate 61 of a tower component is connected to the second docking plate 62 of the tower component adjacent above. The second docking plate 62 of the tower component is connected to the first docking plate 61 of the tower component adjacent below, thereby further improving the connection strength between the tower components on the basis of the flange 11 connection.

[0064] When the flanges 11 of two adjacent tower assemblies are docked, the three protrusions 612 are inserted into the three recesses 622 one by one, and three bolts can pass through the first through holes 613 and the second through holes 623 to lock the first docking plate 61 and the second docking plate 62.

[0065] It should be noted that the number of the protrusions 612 and the inner recesses 622 is not fixed, and those skilled in the art can adjust it according to actual conditions. In addition, the first docking plate 61 and the second docking plate 62 can also be swapped in the direction of the vertical reinforcement rib 3, and the first docking plate 61 can also be set below the tower assembly.

[0066] Please review Figure 1 The utility model also provides a wind turbine generator set 7, including a wind turbine generator 7, a new type of stiffened steel tower structure and a foundation 8 connected in sequence from top to bottom. The new type of stiffened steel tower structure is the new type of stiffened steel tower structure described in the above embodiments. The wind turbine generator set can be newly built or an existing wind turbine generator set reinforced with the new type of stiffened steel tower structure. Post-embedded reinforcement anchoring is performed on the built foundation 8, and then concrete is poured to form a newly built foundation column pier, which is rigidly connected to the vertical stiffener 3 to form a reinforced structural system.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A new type of stiffened steel tower structure, characterized in that: It includes a plurality of tower components that can be assembled, wherein: Each of the tower assemblies comprises a tower body, a plurality of annular reinforcing ribs connected to the inner wall of the tower body, and a plurality of vertical reinforcing ribs, wherein the plurality of annular reinforcing ribs are arranged at intervals in the vertical direction, and the plurality of vertical reinforcing ribs are arranged around the axis of the tower body; A plurality of first connection components are arranged between two adjacent annular reinforcement ribs, wherein the first connection components are buckled to the vertical reinforcement ribs and connected to the inner wall of the tower body; A second connection component is provided at the intersection of the annular reinforcement rib and the vertical reinforcement rib, and the second connection component is buckled to the intersection and connected to the inner wall of the tower body; The two ends of the vertical reinforcing rib are respectively provided with a first butt joint plate and a second butt joint plate for connecting with the second butt joint plate and the first butt joint plate of the upper and lower adjacent tower assemblies.

2. The novel stiffened steel tower structure according to claim 1 is characterized in that: The first connection assembly includes a groove adapted to the cross-section of the vertical reinforcing rib, the bottom surface of the groove is engaged with the upper surface of the vertical reinforcing rib, and two side walls of the groove are connected to the tower body.

3. The novel stiffened steel tower structure according to claim 2 is characterized in that: The groove is formed by splicing two symmetrically arranged first L-shaped plates, and a connecting plate is fixed to the first end of each of the first L-shaped plates. In the assembled state, the two connecting plates are tightly connected by bolts; the second end of each of the first L-shaped plates is connected to a first reinforcing plate extending outward, and the first reinforcing plate is connected to the tower body.

4. The novel stiffened steel tower structure according to claim 1 is characterized in that: The second connection assembly includes a cross groove adapted to the intersection of the annular reinforcement rib and the vertical reinforcement rib, the bottom surface of the cross groove is engaged with the upper surface of the intersection, and the side wall of the cross groove is connected to the tower body.

5. The novel stiffened steel tower structure according to claim 4 is characterized in that: The cross groove is formed by splicing four second L-shaped plates, the first end of each of the second L-shaped plates is connected to the first end of the third L-shaped plate extending inward, and the second end of the third L-shaped plate is also connected to the fourth L-shaped plate; in the assembled state, the second L-shaped plates are engaged with the side walls of the intersection; the third L-shaped plate is engaged with the upper surface of the intersection; the fourth L-shaped plate is tightly engaged with two adjacent fourth L-shaped plates by bolts; the second end of the second L-shaped plate is connected to a second reinforcing plate extending outward, and the second reinforcing plate is connected to the tower body.

6. The novel reinforced steel tower structure according to claim 1 is characterized in that: Angle steels are welded to both ends of each vertical reinforcing rib, and the angle steels are also welded to the inner wall of the tower body.

7. The novel reinforced steel tower structure according to claim 1 is characterized in that: The first butt joint plate comprises a first plate body fixed to an angle steel at an upper end of a vertical reinforcing rib, and a plurality of protrusions are fixed at an upper end of the first plate body.

8. The novel stiffened steel tower structure according to claim 7 is characterized in that: The second docking plate includes a second plate body fixed to the angle steel at the lower end of the vertical reinforcement rib, and the lower end of the second plate body is provided with multiple recessed portions adapted to the multiple protrusions. In the assembled state, the multiple protrusions are inserted into the recessed portions one by one.

9. The novel reinforced steel tower structure according to claim 8 is characterized in that: Each of the protruding portions is provided with a first through hole; the second plate body is provided with a second through hole penetrating the inner recess, and in the assembled state, bolts pass through the first through hole and the second through hole, so that the first butt joint plate and the second butt joint plate are fastened and connected.

10. A wind turbine generator set, characterized in that: It comprises a connected wind turbine, a new type of stiffened steel tower structure and a foundation, wherein the new type of stiffened steel tower structure is the new type of stiffened steel tower structure as described in any one of claims 1-9.

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