A ring-type steel-concrete tower structure

Abstract

The application relates to the wind power technology field, in particular to a circular ring type steel-concrete tower structure. The circular ring type steel-concrete tower structure comprises a steel tower, the steel tower comprises an inner ring steel tower and an outer ring steel tower, the outer ring steel tower is arranged outside the inner ring steel tower, and concrete is poured between the outer ring steel tower and the inner ring steel tower. The circular ring type steel tower structure is formed by two steel towers with different diameters, the connection between the towers is realized through first connecting pieces and second connecting pieces, and the stable structure system is formed by pouring the concrete between the inner ring steel tower and the outer ring steel tower; under the condition that the wall thickness or height of the tower is not increased, the rigidity and strength of the original steel tower are improved, the bearing capacity of the wind turbine unit is met, and the steel amount of the steel tower is effectively reduced. The novel structure is low in cost, can provide sufficient bearing capacity, and is relatively convenient and fast in manufacturing process, material transportation and construction process and the like.

Description

Technical Field

[0001] This invention relates to the field of wind power technology, and in particular to a circular steel-concrete tower structure. Background Technology

[0002] In wind power projects, the wind turbine tower is the supporting structure of the wind turbine generator. The steel tower, made of rolled steel plates, primarily supports the weight of the turbine and converts wind energy into electrical energy. The height of the steel tower depends on the size of the wind turbine and the expected wind energy resources, and can reach tens or even hundreds of meters. With the rapid development of wind turbines, steel towers need to have greater height, rigidity, and strength, leading to increasingly larger diameters and thicker steel walls in traditional steel conical towers, resulting in increased steel consumption and significantly higher manufacturing and installation costs. Meeting the requirements for height, rigidity, and strength while also considering project costs has made the development of new steel tower structures a pressing issue for multi-megawatt wind turbine generators. Summary of the Invention

[0003] The purpose of this invention is to provide a circular steel-concrete tower structure that can solve the problems existing in the prior art.

[0004] The present invention provides a circular steel-concrete tower structure, which includes a steel tower, the steel tower comprising an inner steel tower and an outer steel tower, the outer steel tower being sleeved on the outside of the inner steel tower, and concrete being poured between the outer steel tower and the inner steel tower.

[0005] Preferably, the steel tower is a segmented structure, comprising multiple segmented steel tower sections connected in sequence.

[0006] Preferably, adjacent tower sections are connected by a first connector;

[0007] The first connector includes a steel-concrete square tube and two U-shaped components, with a U-shaped component provided at each end of the steel-concrete square tube;

[0008] The segmented steel tower is inserted into the opening of the U-shaped component, and the segmented steel tower and the U-shaped component are fixed together by bolts.

[0009] Preferably, the steel-concrete square tube and the U-shaped component are connected by welding.

[0010] Preferably, holes are pre-drilled on both the segmented steel tower and the U-shaped component, and the bolts are inserted into the holes.

[0011] Preferably, the annular steel-concrete tower structure comprises multiple steel tower sections connected in sequence.

[0012] Preferably, adjacent steel tower sections are connected by flanges.

[0013] Preferably, the topmost steel tower section in the multi-section steel tower is provided with a second connector at its end, and is connected to the wind turbine steel tower section through the second connector.

[0014] Preferably, the second connecting member includes an annular I-beam and a U-shaped component, wherein the U-shaped component is disposed on the annular I-beam.

[0015] Preferably, the annular steel-concrete tower structure includes steel towers of various heights.

[0016] Compared with existing methods that increase the height and wall thickness of steel towers to meet the multi-megawatt requirements of wind turbine units, the beneficial effects of the annular steel-concrete tower structure of the present invention are:

[0017] The novel structure of this invention is simple, forming a circular steel tower structure using two steel tower cylinders of different diameters. A stable structural system is then formed by pouring concrete between the inner and outer rings of the steel tower cylinders. This improves the rigidity and strength of the original steel tower cylinder without increasing the tower wall thickness or height, while still meeting the load-bearing capacity of the wind turbine unit, effectively reducing the amount of steel used in the tower cylinder. This new structure is low-cost, provides sufficient load-bearing capacity, and is relatively convenient and quick in terms of manufacturing process, material transportation, and construction. Attached Figure Description

[0018] 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.

[0019] Figure 1 Elevation view of the annular steel-concrete tower structure provided for a specific embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of the steel tower provided for a specific embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure of the first connector provided for a specific embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of the second connector provided for a specific embodiment of the present invention;

[0023] Figure 5 This is a partial layout diagram of the segmented steel tower provided for a specific embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1: Steel tower; 2: Segmented steel tower; 3: First connecting piece; 4: Second connecting piece; 5: Wind turbine tower;

[0026] 11: First section of steel tower; 12: Second section of steel tower; 13: Third section of steel tower;

[0027] 21: Inner ring steel tower, 22: Outer ring steel tower, 23: Concrete. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] like Figures 1 to 5As shown, this embodiment provides a circular steel-concrete tower structure, which includes a steel tower 1, an inner steel tower 21 and an outer steel tower 22, the outer steel tower 22 being sleeved on the outside of the inner steel tower 21, and concrete 23 being poured between the outer steel tower 22 and the inner steel tower 21.

[0032] Specifically, the annular steel-concrete tower structure includes two steel towers 1 with different diameters. The steel tower 1 with a smaller diameter is the inner ring steel tower 21, and the steel tower 1 with a larger diameter is the outer ring steel tower 22. The inner ring steel tower 21 and the outer ring steel tower 22 are nested together to form an annular steel tower structure 1, and concrete 23 is poured between the two annular steel towers 1.

[0033] The steel tower 1 is a segmented structure, which includes multiple segmented steel towers 2 connected in sequence.

[0034] The segmented steel tower sections 2 are connected by a first connector 3, which includes a steel-concrete square tube and two U-shaped parts. A U-shaped part is provided at both ends of the steel-concrete square tube.

[0035] The segmented steel tower 2 is inserted into the opening of the U-shaped component, and the segmented steel tower 2 and the U-shaped component are fixed by bolts.

[0036] The steel-concrete square tube includes an annular square tube, into which concrete 23 is poured to form steel-concrete. U-shaped steel components are welded to the upper and lower sides of the steel-concrete square tube, and holes are reserved on both sides of the U-shaped components to facilitate bolt connection with the segmented annular steel tower 2.

[0037] The annular steel-concrete tower structure comprises multiple steel tower sections 1 connected in sequence. For example, the steel tower sections 1 connected in sequence include a first steel tower section 11, a second steel tower section 12, and a third steel tower section 13.

[0038] Adjacent steel tower sections are connected by flanges. The topmost steel tower section 1, which is connected in sequence, is equipped with a second connector 4 and is connected to the wind turbine steel tower section 5 through the second connector 4.

[0039] The second connecting piece 4 consists of an annular H-beam and a U-shaped component. The bottom flange of the H-beam is welded to the U-shaped component, while the inner side of the U-shaped component is welded to the outer side of the annular steel-concrete tower. The outer side of the top flange of the H-beam is provided with equidistant reserved holes. The inner side of the wind turbine steel tower 5 is provided with a flange plate, and the flange plate is provided with holes that are consistent with the flange position of the H-beam. The bolts are inserted into the holes of the flange plate of the wind turbine steel tower 5. When connecting with the second connecting piece 4, the bolts are inserted into the holes of the second connecting piece 4, and then the nuts are tightened with the bolts, thereby completing the connection between the second connecting piece 4 and the wind turbine steel tower 5.

[0040] The wind turbine steel tower 5 is connected to the annular steel-concrete tower structure via the second connector 4, forming a new structural system. This solves the problem of increased tower wall thickness and workload caused by increased tower height, stiffness, and strength. The number of tower sections and the height and diameter of each section vary depending on the height of the steel tower 1.

[0041] To further illustrate the above-mentioned annular steel-concrete tower structure, this embodiment also provides a method for fabricating and installing the above-mentioned annular steel-concrete tower structure, as detailed below:

[0042] In terms of manufacturing and installation, firstly, rollers are used to continuously roll and press the surface of the steel plate to form segmented annular steel plates with a smaller diameter. These smaller-diameter annular tower sections are then welded together to form segmented inner circular steel tower sections 21. Next, rollers are used to continuously roll and press the surface of the steel plate to form two outer ring steel tower sections 22 with a larger half-diameter. These outer ring steel tower sections 22 are then aligned with the smaller-diameter steel tower section 21 at the same center and welded together to form segmented circular steel tower sections 2. The segmented circular steel tower sections 2 are bolted together using a first connecting piece 3 to form a segmented steel tower section. Pre-drilled holes are provided around the bottom and top of the segmented circular steel tower sections 2, with the hole positions matching the pre-drilled holes in the first connecting piece 3, thus achieving the connection between the segmented circular steel tower sections 2.

[0043] After connecting the two sections of the steel tower 2, the third, fourth, and subsequent sections of the steel tower 2 are installed according to the above connection steps and methods, forming segmented steel towers 11, 12, and 13. At this point, concrete 23 is poured between the outer ring steel tower 22 and the inner ring steel tower 21, and flange plates are welded to both ends of the segmented steel towers 11, 12, and 13. Then, high-strength bolts are used to fasten the two sections of the steel tower 1 together. Afterwards, depending on the size of the wind turbine, the segmented steel towers 11, 12, and 13 of different heights are connected by flanges to complete the installation of the entire annular steel tower structure. The topmost segmented annular steel tower 13 is connected to the second connecting piece 4. Then, through pre-drilled holes at the top of the second connecting piece 4 that align with the bottom of the wind turbine steel tower 5, bolts are used to fasten the connection to the wind turbine steel tower 5, thereby enabling the wind turbine to generate electricity.

[0044] In summary, the above-mentioned annular steel-concrete tower structure has the following advantages:

[0045] A circular steel tower structure is formed by using two steel towers of different diameters. The towers are connected by a first connector 3 and a second connector 4, and concrete 23 is poured between the inner and outer rings to stabilize the structural system. This improves the rigidity and strength of the original steel tower 1 without increasing the tower wall thickness or height, while meeting the load-bearing capacity of the wind turbine unit and effectively reducing the amount of steel used in the tower 1. This novel structure is low-cost, provides sufficient load-bearing capacity, and is relatively convenient and quick in terms of manufacturing process, material transportation, and construction.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circular ring type steel-concrete tower structure, characterized by, The system includes a steel tower, which comprises an inner steel tower and an outer steel tower. The outer steel tower is fitted over the outer side of the inner steel tower, and concrete is poured between the outer and inner steel towers. The steel tower is a segmented structure, comprising multiple sequentially connected segmented steel tower sections; adjacent segmented steel tower sections are connected by a first connector. The first connector includes a steel-concrete square tube and two U-shaped components, with a U-shaped component provided at each end of the steel-concrete square tube; The segmented steel tower is inserted into the opening of the U-shaped component, and the segmented steel tower and the U-shaped component are fixed by bolts; The steel-concrete square tube and the U-shaped component are connected by welding. Holes are pre-drilled on both the segmented steel tower and the U-shaped component. The bolts are inserted into the holes, and the hole positions are consistent with the pre-drilled hole positions of the first connecting component, thereby realizing the connection between the segmented annular steel towers. The annular steel-concrete tower structure comprises multiple steel tower sections connected in sequence. A second connector is provided at the end of the topmost steel tower section, and is connected to the wind turbine tower section via this connector. The second connector comprises an annular H-beam and a U-shaped component, with the U-shaped component mounted on the annular H-beam. The bottom flange of the H-beam is welded to the U-shaped component, while the inner side of the U-shaped component is welded to the outer side of the annular steel-concrete tower section. Equidistant pre-drilled holes are provided on the outer side of the top flange of the H-beam. A flange plate is provided on the inner side of the wind turbine tower section, with holes on the flange plate aligned with the flange positions of the H-beam. Bolts are inserted into the holes on the flange plate of the wind turbine tower section. When connecting to the second connector, the bolts are inserted into the holes of the second connector, and then the nuts are tightened to complete the connection between the second connector and the wind turbine tower section.

2. The torus steel-concrete tower structure according to claim 1, characterized in that, Adjacent steel tower sections are connected by flanges.

3. The torus steel-concrete tower structure according to claim 1, characterized in that, The aforementioned annular steel-concrete tower structure includes steel towers of various heights.

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