Spliced steel tower drum structure and manufacturing and installation method thereof

Abstract

The present application relates to the technical field of wind power tower, in particular to a spliced steel tower structure and a manufacturing and installation method thereof. The spliced steel tower structure comprises segmented steel towers and connecting pieces. The lower part of the segmented steel towers is connected with a fan foundation. The upper part of the segmented steel towers is connected with the connecting pieces. The upper part of the connecting pieces is connected with a fan steel tower. The segmented steel towers comprise sectional steel towers. The sectional steel towers comprise multiple groups of channel steels. Each group of channel steels comprises two channel steels which are connected at the flanges. The sectional steel towers are formed by splicing the channel steels. The segmented steel towers are formed by splicing the sectional steel towers. The bottom part of the segmented steel towers is connected with the fan foundation. The top part of the segmented steel towers is connected with the connecting pieces. The whole spliced steel tower structure is formed. The rigidity and strength of the steel tower can be improved without increasing the wall thickness and height of the tower. The load bearing capacity of the fan unit is met. The amount of steel consumed by the steel tower is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power tower, in particular to a spliced steel tower structure and a manufacturing and installation method thereof. BACKGROUND

[0002] In a wind power project, a wind turbine tower is a support structure of a wind turbine generator, a steel tower is rolled from a steel plate, and its main function is to support the weight of the generator and convert wind energy into electrical energy. The height of the steel tower is determined according to the size of the wind turbine and the expected wind energy resources, and can reach tens of meters or even hundreds of meters. With the rapid development of wind turbines, the steel tower needs to have greater height, stiffness and strength, resulting in the increasing diameter of the traditional steel tower, the increasing thickness of the steel material, and the increasing amount of steel material, which greatly increases the manufacturing and installation costs. While meeting the requirements of height, stiffness and strength, the project cost also needs to be considered. For multi-megawatt wind turbine generators, a new type of steel tower structure has become an urgent problem to be solved. SUMMARY

[0003] The first object of the present application is to provide a spliced steel tower structure, which can improve the stiffness and strength of the steel tower without increasing the wall thickness and height of the tower, meet the bearing capacity of the wind turbine generator, and effectively reduce the amount of steel consumed by the steel tower.

[0004] The second object of the present application is to provide a manufacturing and installation method of the spliced steel tower structure, which is convenient and fast, the raw materials such as channel steel and steel plate are convenient for transportation, and the transportation cost can be effectively reduced.

[0005] The present application provides a spliced steel tower structure, which comprises a segmented steel tower and a connecting piece.

[0006] The lower part of the segmented steel tower is connected with a wind turbine foundation.

[0007] The upper part of the segmented steel tower is connected with a connecting piece.

[0008] The upper part of the connecting piece is connected with a wind turbine steel tower.

[0009] The segmented steel tower comprises a plurality of segmented steel towers.

[0010] The segmented steel tower comprises a plurality of groups of channel steel, each group of channel steel comprises two channel steels, and the two channel steels are connected at the flanges.

[0011] Preferably, the top of the wind turbine steel tower is connected with a nacelle, one side of the nacelle is connected with a hub, and the hub is connected with blades.

[0012] Preferably, the connecting piece is in the form of a box without a bottom surface, the side surface of the connecting piece is provided with a reserved opening, and the top of the connecting piece is also provided with a reserved opening.

[0013] Further preferably, the connecting piece is bolted with the steel tower drum of the wind turbine through the reserved hole on the top of the connecting piece.

[0014] Further preferably, the connecting piece is bolted with the segmented steel tower drum through the reserved hole on the side of the connecting piece.

[0015] Preferably, the adjacent segmented steel tower drums are connected by welding.

[0016] Preferably, the adjacent segmented steel tower drums are connected by flanges.

[0017] The application also provides a manufacturing and installation method of the segmented steel tower drum structure, and the steps are as follows:

[0018] S1: The flanges of two channel steels are welded to form a group of channel steels, so that the two channel steels are spliced into the cross-sectional shape of a square tube;

[0019] S2: Each group of channel steels is welded and spliced into a segmented steel tower drum;

[0020] S3: A plurality of segmented steel tower drums are welded and spliced into a segmented steel tower drum;

[0021] S4: The segmented steel tower drums are connected by flanges;

[0022] S5: The bottom of the segmented steel tower drum is connected with the foundation of the wind turbine;

[0023] S6: The top of the segmented steel tower drum is connected with the connecting piece;

[0024] S7: The connecting piece is connected with the steel tower drum of the wind turbine.

[0025] Further preferably, in S2, each group of channel steels is welded by webs or flanges, and finally spliced into a quadrilateral segmented steel tower drum.

[0026] Further preferably, in S6, the connecting piece is fixedly connected with the four sides of the segmented steel tower drum by bolt connection.

[0027] Beneficial effects:

[0028] The technical scheme of the application splices channel steels to form a segmented steel tower drum, splices the segmented steel tower drum to form a segmented steel tower drum, connects the bottom of the segmented steel tower drum with the foundation of the wind turbine, connects the top of the segmented steel tower drum with the connecting piece, forms an integrated segmented steel tower drum structure, and then connects the segmented steel tower drum structure with the connecting piece and the steel tower drum of the wind turbine to form a stable segmented steel tower drum structure. The segmented steel tower drum structure can improve the rigidity and strength of the steel tower drum without increasing the wall thickness and height of the steel tower drum, meets the bearing capacity of the wind turbine unit, and effectively reduces the amount of steel consumed by the steel tower drum. The manufacturing and installation method of the segmented steel tower drum structure is convenient and fast, the raw materials such as channel steels and steel plates are convenient to transport, and the transportation cost can be effectively reduced. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is an elevation view of the spliced ​​steel tower structure of the present invention;

[0031] Figure 2 This is a cross-sectional view AA of the spliced ​​steel tower structure of the present invention;

[0032] Figure 3 This is a three-dimensional view of the connecting components in the spliced ​​steel tower structure of the present invention;

[0033] Figure 4 This is a top view of the connecting components in the spliced ​​steel tower structure of the present invention;

[0034] Figure 5 This is a side view of the connecting component in the spliced ​​steel tower structure of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1: Wind turbine foundation; 2: Channel steel; 3: Segmented steel tower; 4: Sectional steel tower; 5: Connecting parts; 6: Wind turbine steel tower; 7: Nacelle; 8: Hub; 9: Blades. Detailed Implementation

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0039] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an implied order of precedence of the features so indicated. Thus, features having "first", "second", "third" designations can include one or more of the features implicitly or explicitly. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise expressly specified. In addition, the terms "mounting", "connected", "connection" should be interpreted broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, or internal communication of 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.

[0040] As shown in Figures 1 to 5 The present application provides a spliced steel tower structure, which comprises segmented steel tower 4 and connecting piece 5. The lower part of the segmented steel tower 4 is connected with the fan foundation 1, the upper part of the segmented steel tower 4 is connected with the connecting piece 5, the upper part of the connecting piece 5 is connected with the fan steel tower 6, and the segmented steel tower 4 comprises segmented steel tower 3, and the segmented steel tower 3 comprises a plurality of groups of channel steel 2, each group of channel steel 2 comprises two channel steels 2 connected at the flanges. Figure 2 As shown in The two channel steels 2 are first spliced into the cross-sectional shape of a square tube by welding the flanges of the two channel steels 2, and the two channel steels 2 spliced into a group of channel steels 2, and the channel steels 2 between groups are also spliced by welding, and finally spliced into a segmented steel tower 3 by welding.

[0041] The technical scheme of the present application splices the channel steel 2 to form the segmented steel tower 3, splices the segmented steel tower 3 to form the segmented steel tower 4, connects the bottom of the segmented steel tower 4 with the fan foundation 1, connects the top of the segmented steel tower 4 with the connecting piece 5, forms the overall spliced steel tower structure, and connects with the connecting piece 5 and the fan steel tower 6 to form a stable spliced steel tower structure, which can improve the rigidity and strength of the steel tower under the condition of not increasing the wall thickness and height of the tower, meet the bearing capacity of the fan unit, and effectively reduce the amount of steel consumed by the steel tower.

[0042] As shown in Figure 1 The top of the fan steel tower 6 is connected with the nacelle 7, one side of the nacelle 7 is connected with the hub 8, and the hub 8 is connected with the blade 9.

[0043] As shown in Figure 3 The connecting piece 5 is in the shape of a box without a bottom surface, the side surface of the connecting piece 5 is provided with a reserved opening, and the top of the connecting piece 5 is also provided with a reserved opening. The connecting piece 5 is made of a steel plate. The connecting piece 5 is connected with the fan steel tower 6 through the reserved opening in the top of the connecting piece 5. The connecting piece 5 is connected with the segmented steel tower 4 through the reserved opening in the side surface of the connecting piece 5.

[0044] Adjacent segmented steel tower drums 3 are connected by welding. Adjacent segmented steel tower drums 4 are connected by flanges.

[0045] The application also provides a manufacturing and installation method of the spliced steel tower drum structure, and the steps are as follows:

[0046] S1: welding the flanges of two channel steels 2 into a group of channel steels 2, so that the two channel steels 2 are spliced into the cross-sectional shape of a square tube;

[0047] S2: welding each group of channel steels 2 to splice segmented steel tower drums 3;

[0048] S3: welding a plurality of segmented steel tower drums 3 to splice segmented steel tower drums 4;

[0049] S4: connecting the segmented steel tower drums 4 by flanges;

[0050] S5: connecting the bottom of the segmented steel tower drum 4 with the wind turbine foundation 1;

[0051] S6: connecting the top of the segmented steel tower drum 4 with the connecting piece 5;

[0052] S7: connecting the connecting piece 5 with the wind turbine steel tower drum 6.

[0053] In S2, each group of channel steels 2 is welded by webs or flanges, and finally spliced into a quadrilateral segmented steel tower drum 3. Figure 2 As shown in the figure, in the quadrilateral segmented steel tower drum 3, each group of channel steels 2 between the upper edge and the lower edge is welded by a web, and each group of channel steels 2 between the two side edges is welded by a flange.

[0054] In S6, the connecting piece 5 is fixedly connected with the four sides of the segmented steel tower drum 4 by a bolt connection mode.

[0055] The manufacturing and installation method of the spliced steel tower drum structure is convenient and fast, and has low cost. The raw materials such as channel steels 2 and steel plates are convenient to transport, which can effectively reduce the transportation cost.

[0056] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing 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 spliced steel tower structure, characterized by, The segmented steel tower drum and the connecting piece are included; The fan foundation is connected to the lower part of the segmented steel tower drum; The connecting piece is connected to the upper part of the segmented steel tower drum; The fan steel tower drum is connected to the upper part of the connecting piece; The connecting piece is in the shape of a box without a bottom surface, and the side surface and the top of the connecting piece are provided with reserved openings; the connecting piece and the fan steel tower drum are connected through the reserved opening in the top of the connecting piece by means of bolts; the connecting piece and the segmented steel tower drum are connected through the reserved opening in the side surface of the connecting piece by means of bolts; The segmented steel tower drum includes segmented steel tower drums; The segmented steel tower drum includes a plurality of groups of channel steels, each group of channel steels including two channel steels connected at the flanges; The manufacturing and installation method of the segmented steel tower drum structure is as follows: S1: The flanges of the two channel steels are welded to form a group of channel steels, so that the two channel steels are spliced into the cross-sectional shape of a square tube; S2: Each group of channel steels is welded through the web or the flange, and finally spliced into a quadrilateral segmented steel tower drum; S3: A plurality of segmented steel tower drums are welded and spliced into a segmented steel tower drum; S4: The segmented steel tower drums are connected through flanges; S5: The bottom of the segmented steel tower drum is connected to the fan foundation; S6: The top of the segmented steel tower drum is connected to the connecting piece; S7: The connecting piece is connected to the fan steel tower drum.

2. The spliced steel tower structure of claim 1, wherein The machine cabin is connected to the top of the fan steel tower drum, one side of the machine cabin is connected to the hub, and the blades are connected to the hub.

3. The spliced steel tower structure of claim 1, wherein The adjacent segmented steel tower drums are connected through welding.

4. The spliced steel tower structure of claim 1, wherein, The adjacent segmented steel tower drums are connected through flanges.

5. The spliced steel tower structure of claim 1, wherein In S6, the connecting piece is fixedly connected to the four sides of the segmented steel tower drum by means of bolts.

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