Annular section steel-concrete tower drum structure

Abstract

The invention relates to the technical field of wind power, in particular to an annular section steel-concrete tower drum structure. The annular section steel-concrete tower tube structure comprises a steel tower tube, the steel tower tube comprises an inner annular steel tower tube and an outer annular steel tower tube, the outer annular steel tower tube is arranged on the outer side of the inner annular steel tower tube in a sleeving mode, and concrete is poured between the outer annular steel tower tube and the inner annular steel tower tube. The annular steel tower drum structure is formed by the two steel tower drums with different diameters, the tower drums are connected through the first connecting piece and the second connecting piece, and the concrete is poured between the inner annular steel tower drum and the outer annular steel tower drum to form a stable structural system, so that the rigidity and the strength of the original steel tower drum are improved under the condition that the wall thickness or the height of the tower drum is not increased; and the bearing capacity of a fan unit is met, and the steel amount of the steel tower drum is effectively reduced. The novel structure is low in cost, can provide enough bearing capacity, and is relatively convenient and rapid in the manufacturing process, the material transportation process, the construction process and the like.

Description

Technical Field

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

[0002] In wind power projects, wind turbine towers are the supporting structures of wind turbines. Steel towers are made of rolled steel plates. Their main function is to support the weight of the unit and convert 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 of meters or even hundreds of meters. With the rapid development of wind turbines, steel towers need to have greater height, rigidity and strength, resulting in the increasing diameter of traditional steel vertebral tube towers, increasing steel wall thickness, and increasing steel consumption, which greatly increases the cost of production and installation. In order to meet the requirements of height, rigidity and strength, it is also necessary to take into account the project cost. For multi-megawatt wind turbines, a new type of steel tower structure has become an issue that needs to be urgently addressed. Summary of the invention

[0003] The object of the present invention is to provide a circular ring-shaped steel-concrete tower structure, which can solve the problems existing in the prior art.

[0004] The present invention provides a circular steel-concrete tower structure, which comprises a steel tower. The steel tower comprises an inner steel tower and an outer steel tower. The outer steel tower is sleeved on the outer side of the inner steel tower, and concrete is poured between the outer steel tower and the inner steel tower.

[0005] Preferably, the steel tower is a segmented structure, and the steel tower includes a plurality of segmented steel towers connected in sequence.

[0006] Preferably, adjacent segmented towers are connected via a first connecting member;

[0007] The first connecting member comprises a steel-concrete square tube and two U-shaped members, and a U-shaped member is disposed at each end of the steel-concrete square tube;

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

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

[0010] Preferably, holes are reserved on the segmented steel tower and the U-shaped member, and the bolts are inserted into the holes.

[0011] Preferably, the circular steel-concrete tower structure comprises a plurality of steel tower sections connected in sequence.

[0012] Preferably, adjacent steel towers are connected via flanges.

[0013] Preferably, a second connecting piece is provided at the end of the topmost steel tower tube among the multiple sections of steel tower tubes connected in sequence, and is connected to the wind turbine steel tower tube via the second connecting piece.

[0014] Preferably, the second connecting member comprises an annular I-beam and a U-shaped member, and the U-shaped member is arranged on the annular I-beam.

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

[0016] Compared with the existing method of increasing the height and wall thickness of the steel tower to meet the multi-megawatt requirements of the wind turbine unit, the circular steel-concrete tower structure of the present invention has the following beneficial effects:

[0017] The new structure of the present invention is simple. It forms a circular steel tower structure by two steel towers of different diameters, and pours concrete between the inner and outer ring steel towers to form a stable structural system. Without increasing the wall thickness or height of the tower, the rigidity and strength of the original steel tower are improved, and the bearing capacity of the wind turbine unit is met, effectively reducing the amount of steel in the steel tower. The new structure is low-cost, can provide sufficient bearing capacity, and is relatively convenient and fast in manufacturing technology, material transportation and construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

[0021] Figure 3 A schematic structural diagram of a first connecting member provided for a specific embodiment of the present invention;

[0022] Figure 4 A schematic structural diagram of a second connecting member provided in a specific embodiment of the present invention;

[0023] Figure 5 A partial layout diagram of a segmented steel tower provided for a specific implementation manner of the present invention.

[0024] Description of reference numerals:

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

[0026] 11: the first section of the steel tower, 12: the second section of the steel tower, 13: the third section of the steel tower;

[0027] 21: Inner ring steel tower, 22: Outer ring steel tower, 23: Concrete. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] 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 limiting the present invention.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes 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 invention, "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 those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

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

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

[0033] The steel tower 1 is a segmented structure, and includes a plurality of segmented steel towers 2 that are connected in sequence.

[0034] The segmented steel towers 2 are connected by a first connecting member 3. The first connecting member 3 includes a steel-concrete square tube and two U-shaped members. A U-shaped member is provided at each end of the steel-concrete square tube.

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

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

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

[0038] The adjacent segmented steel towers are connected by flanges. The end of the topmost steel tower 1 in the multiple sequentially connected steel towers 1 is provided with a second connector 4 and connected to the wind turbine steel tower 5 through the second connector 4 .

[0039] The second connecting member 4 is composed of an annular I-beam and a U-shaped component, the bottom flange of the I-beam is welded to the U-shaped component, and the inner side of the U-shaped component is welded to the outer side of the circular steel-concrete tower, and equidistant reserved holes are arranged on the outer side of the top flange of the I-beam, wherein a flange plate is arranged on the inner side of the wind turbine steel tower 5, and holes are arranged on the flange plate in the same position as the flange of the I-beam, and bolts are inserted into the holes of the flange plate of the wind turbine steel tower 5, and then when connecting with the second connecting member 4, the bolts are inserted into the holes of the second connecting member 4, and then the nuts and bolts are tightened, thereby completing the connection between the second connecting member 4 and the wind turbine steel tower 5.

[0040] The wind turbine steel tower 5 is connected to the circular steel-concrete tower structure through the second connecting member 4, thereby forming a new structural system. The problem of increasing the tower height, rigidity and strength, resulting in increased tower wall thickness and engineering volume is solved. Depending on the height of the steel tower 1, the number of tower sections and the height and diameter of each section are also different.

[0041] In order to further illustrate the above circular steel-concrete tower structure, this embodiment also provides a method for manufacturing and installing the above circular steel-concrete tower structure, which is specifically shown as follows:

[0042] In terms of the manufacturing and installation method, firstly, rollers are used to continuously roll the surface of the steel plate to form a segmented annular steel plate with a smaller diameter, and the annular tower with a smaller diameter is welded to form a segmented inner ring circular steel tower 21. Then, rollers are used to continuously roll the surface of the steel plate to form two 1 / 2 larger outer ring steel towers 22, and then they are aligned with the same center of the steel tower 21 with a smaller diameter, and the two 1 / 2-sliced ​​outer ring steel towers 22 are fixedly connected by welding to form a segmented circular ring steel tower 2. The segmented circular ring steel towers 2 are bolted together by the first connecting member 3 to form a segmented steel tower. Reserved holes are set around the bottom and top of the segmented circular ring steel tower 2, and the positions of the holes are consistent with the positions of the reserved holes of the first connecting member 3, thereby realizing the connection between the segmented circular ring steel towers 2.

[0043] After the connection of the two sections of the steel tower 2 is completed, the third section, the fourth section, and other sections of the steel tower 2 are installed according to the above connection steps and forms to form segmented steel towers 11, 12, and 13. At this time, concrete 23 is poured between the outer ring steel tower 22 and the inner ring steel tower 21, and flange plates are welded at both ends of the segmented steel tower 11, 12, and 13, and then the two sections of the steel tower are fastened and connected with high-strength bolts. After that, the steel tower 1 uses flange connection to complete the installation of the entire annular steel tower structure according to the size of the wind turbine, and the segmented annular steel tower 13 at the top is connected to the second connecting member 4, and then the top of the second connecting member 4 is used to set the same position as the reserved hole at the bottom of the wind turbine steel tower 5 to achieve bolted connection with the wind turbine steel tower 5, thereby realizing the power generation of the wind turbine.

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

[0045] The circular steel tower structure is formed by two steel towers of different diameters, the towers are connected by the first connecting member 3 and the second connecting member 4, and the concrete 23 is poured between the inner and outer ring steel towers to form a stable structural system. Without increasing the wall thickness or height of the tower, the rigidity and strength of the original steel tower 1 are improved, and the bearing capacity of the wind turbine unit is met, effectively reducing the amount of steel in the steel tower 1. This new structure is low-cost, can provide sufficient bearing capacity, and is relatively convenient and fast in manufacturing technology, material transportation and construction process.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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 steel-concrete tower structure, characterized in that: It comprises a steel tower, which comprises an inner ring steel tower and an outer ring steel tower. The outer ring steel tower is sleeved on the outer side of the inner ring steel tower, and concrete is poured between the outer ring steel tower and the inner ring steel tower.

2. The circular steel-concrete tower structure according to claim 1 is characterized in that: The steel tower is a segmented structure, and the steel tower includes a plurality of segmented steel towers connected in sequence.

3. The circular steel-concrete tower structure according to claim 2 is characterized in that: Adjacent segmented towers are connected via a first connecting piece; The first connecting member comprises a steel-concrete square tube and two U-shaped members, and a U-shaped member is disposed at each end of the steel-concrete square tube; The segmented steel tower is inserted into the opening of the U-shaped member, and the segmented steel tower and the U-shaped member are fixed by bolts.

4. The circular steel-concrete tower structure according to claim 3 is characterized in that: The steel-concrete square tube and the U-shaped member are connected by welding.

5. The circular steel-concrete tower structure according to claim 3 is characterized in that: Holes are reserved on the segmented steel tower and the U-shaped member, and the bolts are inserted into the holes.

6. The circular steel-concrete tower structure according to claim 1 is characterized in that: The circular steel-concrete tower structure comprises a plurality of steel tower sections connected in sequence.

7. The circular steel-concrete tower structure according to claim 6 is characterized in that: Adjacent steel towers are connected by flanges.

8. The circular steel-concrete tower structure according to claim 6, characterized in that: A second connecting piece is provided at the end of the topmost steel tower tube among the multiple sections of steel tower tubes connected in sequence, and is connected to the wind turbine steel tower tube through the second connecting piece.

9. The circular steel-concrete tower structure according to claim 8, characterized in that: The second connecting member includes an annular I-beam and a U-shaped component, and the U-shaped component is arranged on the annular I-beam.

10. The circular steel-concrete tower structure according to claim 6, characterized in that: The circular steel-concrete tower structure includes steel towers of various heights.

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