Wind power tower transition section structure of double-layer ring beam combined concrete filled steel tubular column

Abstract

The invention relates to the field of wind generating set towers, in particular to a wind power tower transition section structure of a double-layer ring beam combined steel pipe concrete column, which comprises an upper ring beam and a lower ring beam, the upper ring beam and the lower ring beam are connected through a plurality of annularly arranged connecting columns, and a combined tower drum is arranged between the upper ring beam and the lower ring beam. The combined tower drum comprises a plurality of fragmentation units which are annularly arranged. The height of the transition section can be designed as required, and the transition section is transformed into a fabricated annular transition section and is decomposed into a plurality of units, so that construction, transportation and installation are facilitated; from the cross section of the transition section, the inertia moment of the upper and lower ring beam mode transition section is obviously improved, and the bending resistance of the section of the transition section is further improved.

Description

Technical Field

[0001] The present invention relates to the field of wind turbine towers, and in particular to a wind turbine tower transition section structure with double-layer ring beams and combined steel tube concrete columns. Background Art

[0002] At present, wind turbine towers with a height of more than 100m usually adopt the method of concrete + pure steel tube. Its structure mainly consists of the upper traditional steel tower tube and the lower steel tube concrete support, as well as the middle transition section. Figure 1 As shown, the structure of the existing intermediate transition section of the tower mainly includes an upper ring beam and a lower ring beam. The upper ring beam and the lower ring beam are connected by a connecting column. The existing intermediate transition section is connected, and its transition section is a combination of a steel platform and a tower. The steel pipe above the transition section penetrates the tower and is prone to stress concentration. The transition section and the lower tower frame are connected by four cylinders, which fail to form a complete closed loop. Therefore, when subjected to a large torque, the stress of the steel platform exceeds the standard. Summary of the Invention

[0003] In view of the above problems, the purpose of the present invention is to provide a wind turbine tower transition section structure with double-layer ring beams and combined steel tube concrete columns. The present invention adopts the following technical solutions:

[0004] The present invention provides a wind turbine tower transition section structure with a double-layer ring beam combined with steel tube concrete columns, comprising an upper ring beam and a lower ring beam, wherein the upper ring beam and the lower ring beam are connected by a plurality of annularly arranged connecting columns, and is characterized in that a combined tower is arranged between the upper ring beam and the lower ring beam, and the combined tower includes a plurality of annularly arranged segmented units.

[0005] Preferably, the upper ring beam and the lower ring beam are both assembled from multiple arc segments.

[0006] Preferably, the upper ring beam includes a steel jacket located outside and a ring beam filling concrete filled in the steel jacket.

[0007] Preferably, the structure of the lower ring beam is the same as that of the upper ring beam.

[0008] Preferably, the connecting column comprises a steel pipe and a column pipe filled with concrete inside the steel pipe.

[0009] Preferably, the slicing unit is a single-layer steel plate or a double-layer steel plate sandwich structure.

[0010] Preferably, the combined tower is located in the middle of an annular area surrounded by a plurality of the connecting columns; the upper end of the segmented unit is connected to the upper ring beam, and the lower end is connected to the lower ring beam.

[0011] Preferably, the slice unit is arranged between two adjacent connecting columns; the upper end of the slice unit is connected to the upper ring beam, the lower end is connected to the lower ring beam, and the side of the slice unit is connected to the adjacent connecting columns.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] The height of the transition section of the present invention can be designed as needed, and it can be transformed into an assembled annular transition section, which can be decomposed into several units for easy construction, transportation and installation. From the perspective of the cross section of the transition section, the moment of inertia of the upper and lower ring beam mode transition section is significantly improved, thereby improving the bending resistance of the transition section. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the structure of the middle transition section of the tower in the background technology

[0016] Figure 2 This is a schematic structural diagram of a wind power tower transition section in Embodiment 1 of the present invention;

[0017] Figure 3 Schematic top view of a specific connection method 1 of the slicing units in the first embodiment of the present invention;

[0018] Figure 4 Schematic top view of a second specific connection method of the slicing units in the first embodiment of the present invention;

[0019] Figure 5 This is a schematic structural diagram of the upper and lower ring beams and connecting columns in Example 1 of the present invention;

[0020] Figure 6 This is a schematic diagram of the main structure of the transition section of a wind power tower in the second embodiment of the present invention;

[0021] Figure 7 Schematic diagram of a top view of the upper ring beam in the third embodiment of the present invention;

[0022] Figure 8 Schematic diagram of the longitudinal section of the transition section of a wind power tower in the third embodiment of the present invention;

[0023] Figure 9 Schematic diagram of the longitudinal section of the transition section of a wind turbine tower in the fourth embodiment of the present invention;

[0024] Figure 10 for Figure 9 A schematic diagram of a side view structure;

[0025] Figure 11 This is a side structural schematic diagram of the joint steel sleeve in the fifth embodiment of the present invention with a reinforcing steel plate installed.

[0026] Explanation of the accompanying symbols: 1. Upper ring beam; 101. Steel sleeve; 102. Ring beam filled with concrete; 2. Lower ring beam; 3. Connecting column; 301. Steel pipe; 302. Column pipe filled with concrete; 4. Modular tower; 401. Slice unit; 5. Column ear plate; 6. Ring beam ear plate; 7. Joint steel sleeve; 8. Reinforcement steel plate. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Example 1

[0029] like Figure 2 As shown, this embodiment discloses a wind turbine tower transition section structure of a double-layer ring beam combined steel tube concrete column, including an upper ring beam 1 and a lower ring beam 2. The upper ring beam 1 and the lower ring beam 2 are connected by multiple annularly arranged connecting columns 3. A combined tower 4 is arranged between the upper ring beam 1 and the lower ring beam 2. The combined tower 4 includes multiple annularly arranged segmented units 401.

[0030] In this embodiment, the slice unit 401 is arranged between two adjacent connecting columns 3. The upper end of the slice unit 401 is connected to the upper ring beam 1, the lower end is connected to the lower ring beam 2, and the side of the slice unit 401 is connected to the adjacent connecting columns 3.

[0031] The material of the slice unit 401 is usually a steel plate. The slice unit 401 can be a single-layer steel plate or a double-layer steel plate sandwich structure. The double-layer steel plate sandwich structure can also be filled with concrete.

[0032] The upper end of the slice unit 401 can be connected to the upper ring beam 1 by welding, and the lower end can be welded to the lower ring beam 2.

[0033] like Figure 3 As shown, a slicing unit 401 is arranged between two connecting columns 3, and corresponding column ear plates 5 are welded to the outer walls of the connecting columns 3. The side edges of the slicing unit 401 are connected to the column ear plates 5 on the adjacent connecting columns 3 by bolt assemblies.

[0034] like Figure 4 As shown, two slice units 401 are arranged between the two connecting columns 3. The two slice units 401 can be connected by bolts, and the sides of the slice units 401 and the adjacent connecting columns 3 can be connected by bolt assemblies or welding.

[0035] like Figure 5As shown, the upper ring beam 1 typically includes a hollow steel casing 101, within which is poured a ring beam-filled concrete 102. The lower ring beam 2 has the same structure as the upper ring beam 1. The connecting column 3 comprises a hollow steel pipe 301, within which is poured a column-filled concrete 302. The ends of the steel pipe 301 of the connecting column 3 are welded to the steel casing 101.

[0036] Example 2

[0037] like Figure 6 As shown, in this embodiment, the combined tower 4 is located in the middle of the annular area surrounded by multiple connecting columns 3; the upper end of the slice unit 401 is connected to the upper ring beam 1, and the lower end is connected to the upper ring beam 1, and two adjacent slice units 401 are connected to each other.

[0038] The material of the slice unit 401 is usually steel plate, wherein the upper end of the slice unit 401 is connected to the upper ring beam 1 by welding, and the lower end is welded to the lower ring beam 2. The two slice units 401 are connected by bolts or welding.

[0039] The rest of the structure in this embodiment is the same as that in the first embodiment.

[0040] Example 3

[0041] like Figure 7 As shown, in this embodiment, both the upper ring beam 1 and the lower ring beam 2 adopt a segmented design. Specifically, each is constructed from multiple arcuate segments. Each arcuate segment has connecting bolt holes at its end, and adjacent arcuate segments are connected via bolt assemblies. The segments can be positioned in two different locations: one near the connecting columns 3 and the other between the two connecting columns 3.

[0042] like Figure 8 As shown, in this embodiment, the bottom surface of the upper ring beam 1 and the top surface of the lower ring beam 2 are both provided with ring beam lugs 6, and the top and bottom of the slice unit 401 are connected to the corresponding ring beam lugs 6 on the ring beam through bolt assemblies.

[0043] Example 4

[0044] like Figure 9 As shown, in this embodiment, the upper ring beam 1 and the lower ring beam 2 are both designed in segments, that is, the upper ring beam 1 and the lower ring beam 2 are both spliced together by multiple arc segments, and the ends of each ring beam arc segment are connected by a joint steel sleeve 7, and the two ends of the joint steel sleeve 7 are fixed to the ends of the ring beam arc segment by welding.

[0045] like Figure 10As shown, in this embodiment, ring beam ear plates 6 are welded to the bottom surface of the upper ring beam 1, the top surface of the lower ring beam 2 and the joint steel sleeve 5, and the top and bottom of the segmented unit 401 are connected to the corresponding mounting ear plates on the ring beam through bolt assemblies.

[0046] Example 5

[0047] like Figure 11 As shown, in this embodiment, the upper ring beam 1 and the lower ring beam 2 are both designed in segments, that is, the upper ring beam 1 and the lower ring beam 2 are both spliced together by multiple arc segments, and the ends of each ring beam arc segment are connected by a joint steel sleeve 7, and the two ends of the joint steel sleeve 7 are fixed to the ends of the ring beam arc segment by welding.

[0048] In order to strengthen the structural strength between the joint steel sleeve 7 and the arc section of the ring beam, a reinforcing steel plate 8 is installed between the joint steel sleeve 7 and the ring beam. During installation, the reinforcing steel plate 8 is first welded to the inner wall of the joint steel sleeve 7, and then the joint steel sleeve 7 is sleeved on the arc section of the ring beam. After that, the joint steel sleeve 7, the reinforcing steel plate 8 and the arc section of the ring beam are welded and fixed.

[0049] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A wind turbine tower transition section structure with a double-layer ring beam combined with a steel tube concrete column, comprising an upper ring beam (1) and a lower ring beam (2), wherein the upper ring beam (1) and the lower ring beam (2) are connected by a plurality of connecting columns (3) arranged in an annular manner, characterized in that: A combined tower (4) is provided between the upper ring beam (1) and the lower ring beam (2), and the combined tower (4) comprises a plurality of slice units (401) arranged in an annular manner.

2. The wind turbine tower transition section structure of double-layer ring beam combined steel tube concrete column according to claim 1 is characterized by: The upper ring beam (1) and the lower ring beam (2) are both assembled from a plurality of arc-shaped segments.

3. The wind turbine tower transition section structure of double-layer ring beam combined steel tube concrete column according to claim 1 is characterized by: The upper ring beam (1) comprises a steel casing (101) located outside and a ring beam filling concrete (102) filled in the steel casing (101).

4. The wind turbine tower transition section structure of double-layer ring beam combined steel tube concrete column according to claim 2 is characterized by: The structure of the lower ring beam (2) is the same as that of the upper ring beam (1).

5. The wind turbine tower transition section structure of double-layer ring beam combined steel tube concrete column according to claim 1 is characterized by: The connecting column (3) comprises a steel pipe (301) and a column pipe filled concrete (302) filled inside the steel pipe (301).

6. The wind turbine tower transition section structure of double-layer ring beam combined steel tube concrete column according to claim 1 is characterized by: The slicing unit (401) is a single-layer steel plate or a double-layer steel plate sandwich structure.

7. The wind turbine tower transition section structure of double-layer ring beam combined steel tube concrete column according to claim 1 is characterized by: The combined tower (4) is located in the middle of an annular area surrounded by a plurality of connecting columns (3); The upper end of the slice unit (401) is connected to the upper ring beam (1), and the lower end is connected to the lower ring beam (2).

8. The wind turbine tower transition section structure of double-layer ring beam combined steel tube concrete column according to claim 1 is characterized by: The slicing unit (401) is arranged between two adjacent connecting pillars (3); The upper end of the slice unit (401) is connected to the upper ring beam (1), and the lower end is connected to the lower ring beam (2); the side of the slice unit (401) is connected to the adjacent connecting column (3).

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