Assembled tower structure, wind turbine generator unit and installation method

Abstract

The application provides an assembled tower structure, a wind turbine generator and a mounting method. The assembled tower structure comprises a plurality of tower components which can be assembled, each of the tower components comprising two tower bodies which can be assembled, each of the tower bodies comprising a plurality of vertical profile steels in an annular array, the plurality of vertical profile steels being filled with concrete to form a steel-concrete structure in an annular shape; the tower body further comprising an annular steel plate connected to the open end of the plurality of vertical profile steels; the tower body further comprising a connecting plate connected to the connecting end of each vertical profile steel; each tower component further comprising a connecting piece, the connecting ends of the plurality of vertical profile steels of the two tower bodies being connected to two ends of the connecting piece through the corresponding connecting plates. The embodiment adopts a plurality of tower components for assembly, thereby providing convenience for transportation and construction. The tower body spliced by the vertical profile steels can enhance the strength of the tower body and reduce the cost. The connecting plate is arranged to facilitate connection with the connecting piece and can also improve the connecting strength.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fan tower drum, in particular to a spliced tower drum structure, a wind turbine generator unit and a mounting method. BACKGROUND

[0002] In a wind power project, the fan tower drum is a support structure of the wind turbine generator unit, the steel tower drum is rolled from a steel plate, and the main function is to support the weight of the unit and convert wind energy into electrical energy.

[0003] The height of the steel tower drum is determined according to the size of the fan and the expected wind energy resources, and can reach dozens of meters or even hundreds of meters. Therefore, the steel tower drum needs to have greater stiffness and strength to meet the design requirements.

[0004] To meet the above requirements, the diameter of the related tower drum steel tubular tower is getting larger and larger, the wall thickness of the steel material is increasing, and the amount of steel material is increasing, which greatly increases the manufacturing and installation costs.

[0005] Therefore, a new type of tower drum structure is needed to solve the above problems. SUMMARY

[0006] The summary part of the present application is used to introduce the concept in a simple form, which will be described in detail in the specific embodiment part. The summary part of the present application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0007] The present application provides a spliced tower drum structure, a wind turbine generator unit and a mounting method to solve the technical problems mentioned in the background part.

[0008] In a first aspect, the present application provides a spliced tower drum structure, comprising a plurality of tower drum assemblies that can be spliced, wherein,

[0009] Each tower drum assembly comprises two tower drum bodies that can be spliced, each tower drum body comprises a plurality of vertically arranged steel bars in an annular array, and the plurality of vertically arranged steel bars are filled with concrete to form an annular steel-concrete structure;

[0010] The tower drum body further comprises an annular steel plate connected to the open end of the plurality of vertically arranged steel bars, and the annular steel plate is used to connect with the adjacent tower drum assembly;

[0011] The tower drum body further comprises a connecting plate connected to the connecting end of each vertically arranged steel bar;

[0012] Each tower drum assembly further comprises a connecting piece, and the connecting ends of the plurality of vertically arranged steel bars of the two tower drum bodies are connected to both ends of the connecting piece through the corresponding connecting plates.

[0013] Optionally, the tower structure assembled by the tower section assemblies is conical.

[0014] Optionally, the vertical section steel is gradually reduced in cross section from bottom to top.

[0015] Optionally, the length of the connecting plate is greater than the cross section height of the vertical section steel, and the two ends of the connecting plate protrude from the two ends of the vertical section steel in the assembled state.

[0016] Optionally, bolt holes for connecting the connecting member are formed in the two ends of the connecting plate protruding from the vertical section steel.

[0017] Optionally, the connecting member is formed by bending an I-beam and welding the head and tail.

[0018] Optionally, bolt holes corresponding to the connecting plate are formed on the flanges at the upper and lower ends of the connecting member.

[0019] Optionally, the vertical section steel is welded to the middle of the annular steel plate, and bolt holes are formed on the inner and outer sides of the annular steel plate relative to the tower body.

[0020] In a second aspect, the application further provides a wind turbine generator unit, comprising a wind turbine, an assembled tower structure and a foundation connected together, wherein the assembled tower structure is the assembled tower structure as described in any one of the embodiments of the first aspect.

[0021] In a third aspect, the application further provides an installation method for the wind turbine generator unit, comprising:

[0022] welding the open ends of the plurality of vertical section steels to the annular steel plate in a ring-shaped array and centrally;

[0023] welding the connecting plate to the connecting end of each vertical section steel;

[0024] pouring concrete into the vertical section steel through a mold to form a ring-shaped steel-concrete structure;

[0025] connecting the connecting plates of the two tower bodies to the upper and lower ends of the connecting member to assemble a tower section assembly;

[0026] connecting the annular steel plate at the lower end of the lowest tower section assembly to the foundation, and connecting the annular steel plate at the upper end of the lowest tower section assembly to the annular steel plate at the lower end of the adjacent tower section assembly, and assembling all the tower section assemblies to form the tower structure;

[0027] connecting the annular steel plate at the upper end of the uppermost tower section assembly to the wind turbine tower, and installing the nacelle, hub and blades.

[0028] The above-mentioned embodiments of the present application have the following beneficial effects: the assembled tower structure of some embodiments of the present application is assembled by multiple tower components, which provides convenience for material transportation and construction process.

[0029] The multiple vertically arranged steel plates are used to replace the steel plates to form the steel tower, which can enhance the strength of the tower body. The steel-concrete structure formed by pouring concrete can further enhance the strength of the tower body.

[0030] The connecting plates arranged at both ends of the vertically arranged steel plates are convenient for connection with the connecting members, and can also improve the connection strength of two tower bodies or adjacent tower components.

[0031] The tower structure has low cost, can provide sufficient bearing capacity, and is relatively convenient and fast in manufacturing process, material transportation and construction process. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed in the description of the specific embodiments or prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0033] Figure 1 Structure diagram of an embodiment of the tower component of the present application;

[0034] Figure 2 Top view of another embodiment of the connecting plate and the vertically arranged steel plate after connection;

[0035] Figure 3 Top view of another embodiment of the connecting plate and the vertically arranged steel plate after connection;

[0036] Figure 4 Top view of another embodiment of the connecting plate and the vertically arranged steel plate after connection;

[0037] Figure 5 Top view of another embodiment of the connecting plate and the vertically arranged steel plate after connection;

[0038] Figure 6 Structure diagram of an embodiment of the connecting member of the present application;

[0039] Figure 7 Structure diagram of an embodiment of the wind turbine generator of the present application.

[0040] BRIEF DESCRIPTION OF DRAWINGS

[0041] 11, vertical steel; 12, concrete; 2, connecting plate; 3, connecting piece; 4, ring steel plate; 5, foundation; 6, tower; 7, nacelle; 8, hub; 9, blade. DETAILED DESCRIPTION

[0042] The technical solutions of the present application will be described in detail below with reference to the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of the present application.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality of" means two or more, unless otherwise explicitly and specifically limited. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. 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.

[0045] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0046] First, please refer to Figure 1 and Figure 2 , Figure 1 is a structural schematic view of an embodiment of the tower assembly of the present application; Figure 2 is a top view of an embodiment of the connecting plate and vertical steel after connection. As Figure 1 and Figure 2As shown, the assembled tower structure is assembled by a plurality of tower components. Each tower component comprises two tower bodies, which are surrounded by a plurality of vertically arranged steel bars 11 in an annular array. As an example, the vertically arranged steel bars 11 can be I-beams. The specification of the vertically arranged steel bars 11 and the number of the vertically arranged steel bars 11 can be determined by the strength requirement of the tower structure by those skilled in the art. In addition, the adjacent two vertically arranged steel bars 11 can be spaced apart or connected by welding, which can be adjusted by those skilled in the art according to the actual situation, and is not limited here.

[0047] The assembled tower structure can be conical, and therefore, the two tower bodies in each tower component gradually decrease in cross section from bottom to top. The vertically arranged steel bars 11 in each tower body can also be arranged to gradually decrease in cross section from bottom to top.

[0048] Next, please refer to Figure 3 and continue to refer to Figure 1 and Figure 2 , Figure 3 is a top view of another embodiment of the connecting plate connected with the vertically arranged steel bar of the present application. As shown in Figures 1 to 3 , one end of the connecting end of each vertically arranged steel bar 11 is welded with a connecting plate 2.

[0049] Next, taking the upper tower body as an example, the lower end of each vertically arranged steel bar 11 is welded with a connecting plate 2, as shown in Figure 2 , the connecting plate 2 can be square, the width of the connecting plate 2 is matched with the width of the vertically arranged steel bar 11, and the length of the connecting plate 2 is set to be greater than the cross-sectional height of the vertically arranged steel bar 11. In the assembled state, the two ends of the connecting plate 2 protrude from the two ends of the vertically arranged steel bar 11. Bolt holes are provided at the two ends of the connecting plate 2 protruding from the vertically arranged steel bar 11.

[0050] As shown in Figure 3 , in order to enhance the strength of the tower body, the concrete 12 is poured between the plurality of vertically arranged steel bars 11 by an annular mold to form a steel-concrete tower body.

[0051] Please refer to Figure 4 and Figure 5 and continue to refer to Figure 1 , Figure 4 is a top view of an embodiment of the annular steel plate connected with the vertically arranged steel bar of the present application; Figure 5 is a top view of another embodiment of the annular steel plate connected with the vertically arranged steel bar of the present application. As shown in Figure 1 and Figure 4 , the open end of the vertically arranged steel bar 11 is welded on the annular steel plate 4, and the adjacent vertically arranged steel bars 11 are welded to form a circumferential tower structure tower body, and the above open end is Figure 1The upper end of the upper tower body and the lower end of the lower tower body.

[0052] Still taking the upper tower body as an example, the upper end of the vertical steel 11 is welded with the middle part of the annular steel plate 4, and a plurality of bolt holes are arranged on the two sides of the annular steel plate 4 protruding from the tower body. Figure 5 The figure shows the schematic diagram of the connection with the annular steel plate 4 when the vertical steel 11 in the tower body is poured with concrete 12 to form a steel-concrete tower body.

[0053] Next, please refer to Figure 6 and continue to refer to Figure 1 , Figure 6 The structure schematic diagram of an embodiment of the connecting piece of the application. As Figure 6 shown, the connecting piece 3 is also arranged between the two tower bodies. The connecting piece 3 can be formed by bending an I-beam and welding the head and tail. The bolt holes are arranged on the two sides of the upper flange and the lower flange of the connecting piece 3 relative to the web. The bolt holes of the upper flange correspond to the bolt holes on the connecting plate 2 connected with the upper tower body, and are connected by bolts. The bolt holes of the lower flange correspond to the bolt holes on the connecting plate 2 connected with the lower tower body, and are connected by bolts. In this way, the two tower bodies are assembled into a tower assembly.

[0054] The bolt holes of the annular steel plates 4 on the upper and lower tower assemblies correspond to the bolt holes of the annular steel plates 4 of the adjacent tower assemblies above and below, and can be connected by bolts. In this way, a plurality of tower assemblies can be assembled according to the height required by the wind turbine generator set to form a tower structure.

[0055] The application also provides a wind turbine generator set. Please refer to Figure 7 , Figure 7 The structure schematic diagram of an embodiment of the wind turbine generator set of the application. The wind turbine generator set includes a wind turbine generator, an assembled tower structure and a foundation 5. The assembled tower structure is the assembled tower structure described in the above embodiments. The wind turbine generator can include blades 9, the blades 9 are connected with a hub 8, the hub 8 is connected with a generator arranged in a nacelle 7. A fan tower 6 is connected at the bottom of the nacelle 7. The fan tower 6 is connected with the upper end of the assembled tower structure through a flange. The lower end of the assembled tower structure is connected with the foundation 5.

[0056] The application further provides an installation method for the wind turbine generator set.

[0057] Next, molds are arranged on the inner and outer sides of the vertical steel profiles 11 of the tower body, and concrete 12 is poured to form a tower body of a steel-concrete structure.

[0058] Then, the connecting plates 2 of two tower bodies are connected to the upper and lower ends of the connecting member 3 by bolts, respectively, to assemble a tower body assembly.

[0059] By using the above method, the tower body assemblies are transported to the site. The annular steel plate 4 at the lower end of the bottommost tower body assembly is connected to the foundation 5 by bolts. The annular steel plate 4 at the upper end of the bottommost tower body assembly is connected to the annular steel plate 4 at the lower end of the adjacent tower body assembly by bolts, and all the tower body assemblies are assembled to form the tower structure. Next, the annular steel plate 4 at the upper end of the uppermost tower body assembly is connected to the wind turbine tower 6 by flanges. Finally, the nacelle 7, the hub 8 and the blades 9 are installed on the wind turbine tower 6 to complete the installation.

[0060] The above installation method can improve the processing efficiency and make the transportation and construction process convenient and fast.

[0061] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A modular tower structure, characterized in that, Includes multiple assembleable tower components, among which, Each tower assembly includes two assembleable tower bodies, each tower body includes multiple annular arrays of vertical steel sections, with concrete filling the spaces between the multiple vertical steel sections to form an annular steel-concrete structure; The tower body also includes an annular steel plate connected to the open ends of multiple vertical steel sections, the annular steel plate being used to connect with adjacent tower components; The tower body also includes a connecting plate connected to the connecting end of each vertical steel section; Each of the tower components also includes a connector, and the connecting ends of multiple vertical steel sections of the two tower bodies are connected to the two ends of the connector through corresponding connecting plates; The length of the connecting plate is set to be greater than the cross-sectional height of the vertical steel section. In the assembled state, both ends of the connecting plate protrude beyond the ends of the vertical steel section. The connecting plate has bolt holes at both ends protruding from the vertical steel for connecting to the connecting parts; The connector is formed by bending an I-beam and welding the ends together. The vertical steel section is welded to the middle of the annular steel plate, and bolt holes are provided on the inner and outer sides of the annular steel plate relative to the main body of the tower.

2. The assembled tower structure according to claim 1, characterized in that, The tower structure formed by assembling each tower component is conical.

3. The assembled tower structure according to claim 2, characterized in that, The vertical steel section gradually decreases in cross-section from bottom to top.

4. The assembled tower structure according to claim 1, characterized in that, The upper and lower end flanges of the connector are provided with bolt holes corresponding to the connecting plate.

5. A wind turbine generator set, characterized in that, It includes a connected wind turbine, a prefabricated tower structure, and a foundation, wherein the prefabricated tower structure is the prefabricated tower structure as described in any one of claims 1-4.

6. A method for installing a wind turbine generator set as described in claim 5, comprising: Multiple vertical steel sections are welded in a circular array with their open ends centered onto a circular steel plate. Weld a connecting plate to each vertical steel section at its connection end; A ring-shaped steel-concrete structure is formed by pouring concrete into vertical steel sections using molds. The connecting plates of the two tower bodies are connected to the upper and lower ends of the connector to assemble them into a tower assembly. Connect the annular steel plate at the bottom of the bottom tower assembly to the foundation; connect the annular steel plate at the top of the bottom tower assembly to the annular steel plate at the bottom of the adjacent tower assembly, and assemble all the tower assemblies in this way to form the tower structure. The annular steel plate at the top of the uppermost tower assembly is connected to the wind turbine tower and the nacelle, hub, and blades are installed there.

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