CN211737373U - A prefabricated concrete tower of assembled for wind turbine generator system - Google Patents

A prefabricated concrete tower of assembled for wind turbine generator system Download PDF

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Publication number
CN211737373U
CN211737373U CN201921922283.XU CN201921922283U CN211737373U CN 211737373 U CN211737373 U CN 211737373U CN 201921922283 U CN201921922283 U CN 201921922283U CN 211737373 U CN211737373 U CN 211737373U
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China
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layer arc
arc sheet
bottom layer
sheet
middle layer
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CN201921922283.XU
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郝二通
杨峰
陆瑞军
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Wu Weiyue
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BEIJING WANYUAN INDUSTRY CO LTD
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines

Abstract

The invention relates to the technical field of wind power generation, and particularly discloses an assembled precast concrete tower for a wind turbine generator. The tower comprises a bottom layer arc sheet, a middle layer arc sheet, a top layer arc sheet and a top connecting section, wherein a plurality of steel strand pore channels are distributed on the bottom layer arc sheet, the middle layer arc sheet and the top layer arc sheet along the circumference, the bottom layer arc sheet, the middle layer arc sheet and the top layer arc sheet are sequentially installed upwards and penetrate through the steel strand pore channels on each arc sheet through steel strands for connection, a plurality of arc sheets on each layer form a cone frustum structure, and an internal reinforcing beam is arranged on a vertical seam; the horizontal seams of the bottom layer arc sheet, the middle layer arc sheet and the top layer arc sheet are arranged in a staggered mode. The tower can solve the problem that the traditional concrete tower is insufficient in shear resistance and torsion resistance safety redundancy, provides an assembly-type prefabricated concrete tower which is reliable in assembly and efficient in hoisting, and can be widely applied to a concrete section of a full-hybrid tower or a hybrid tower of a wind turbine generator.

Description

A prefabricated concrete tower of assembled for wind turbine generator system
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to an assembled precast concrete tower for a wind turbine generator.
Background
Wind power generation is around the world in the rise for more than ten years and becomes the most important form of green energy development and utilization. At present, the problems of being far away from a power grid receiving end, being difficult to be connected to a grid, being difficult to be absorbed and the like generally exist in the high wind speed areas in the three north of China, and the abandoned wind is serious, so that the low wind speed areas in the middle east and the south become key development areas of the wind power plant. Generally, the height of a tower of a fan is improved as one of main solutions for improving the power generation capacity of a low wind speed area, according to measurement and calculation of a wind field in the middle of China, the height of a hub is improved from 80 meters to 120 meters, and the annual power generation capacity can be increased by 33%.
The steel tower of the traditional wind turbine generator is about 80 meters high, when the height exceeds 100 meters, the cost of the steel tower is increased in a nonlinear mode, the frequency of the steel tower and the rotation frequency of a wind wheel are easy to intersect, the defects of the steel tower can be effectively avoided by a fully-mixed tower or a mixed tower, and the steel tower has the advantages of being prefabricated in segments, convenient to transport, convenient to hoist, good in damping performance and the like. For the concrete section of the prefabricated full-concrete tower or the prefabricated high-efficiency prefabricated concrete tower, the lower area of the prefabricated full-concrete tower or the prefabricated high-efficiency prefabricated concrete tower bears very large bending moment, shearing force and torque, the traditional concrete tower is mainly tensioned through prestressed steel strands to ensure that the bending moment effect cannot cause tensile stress of the concrete assembled section, and the shearing force and the torque are mainly provided through friction, so that the problem of insufficient safety redundancy is obviously caused, and therefore, the method for finding the prefabricated concrete tower which is reliable in assembly and high in hoisting efficiency has important significance for the development of the wind turbine generator in a low wind speed area.
Disclosure of Invention
The invention aims to provide an assembled precast concrete tower for a wind turbine generator, and solves the problem of insufficient shear resistance and torsion resistance safety redundancy of the traditional concrete tower.
The technical scheme of the invention is as follows: an assembled precast concrete tower frame for a wind turbine generator comprises a bottom layer arc sheet, a middle layer arc sheet, a top layer arc sheet and a top connecting section, wherein a plurality of steel strand pore channels are distributed on the bottom layer arc sheet, the middle layer arc sheet, the top layer arc sheet and the top connecting section along the circumference, the bottom layer arc sheet, the middle layer arc sheet and the top layer arc sheet are sequentially installed upwards and penetrate through the steel strand pore channels on each arc sheet through steel strands for connection, a plurality of arc sheets on each layer form a cone frustum structure, and an internal reinforcing beam is arranged on a vertical seam; the top connecting section is a circular ring section, the upper end of the top connecting section is a plane, and the top connecting section is connected with the top arc sheet in a matching way through a steel strand; the horizontal seams of the bottom layer arc sheet, the middle layer arc sheet and the top layer arc sheet are arranged in a staggered manner; the number of said intermediate deck arc segments is determined based on the total height of the concrete tower.
The bottom layer arc piece comprises two types of arc pieces, namely a bottom layer arc piece A and a bottom layer arc piece B; the bottom layer arc sheets A are higher than the bottom layer arc sheets B, and the bottom layer arc sheets A and the bottom layer arc sheets are alternately connected to form a bottom layer truncated cone structure; the middle layer arc sheet and the top layer arc sheet have the same height.
The bottom layer arc piece comprises a bottom layer arc piece A and a bottom layer arc piece B, the arc lengths of the bottom layer arc piece A and the bottom layer arc piece B are both a quarter of circumference, and the bottom layer arc piece A is higher than the bottom layer arc piece B; the middle layer arc piece comprises a middle layer arc piece A and a middle layer arc piece B, and the heights of the middle layer arc piece A and the middle layer arc piece B are the same; the top layer arc piece comprises a top layer arc piece A and a top layer arc piece B, and the top layer arc piece A and the top layer arc piece B are the same in height.
The bottom layer arc sheets A and the bottom layer arc sheets B are alternately arranged on the base boss and are connected by the tension of the steel strand penetrating through the steel strand pore passage; the middle layer arc sheet A is arranged at the upper end of the bottom layer arc sheet A, and the middle layer arc sheet B is arranged on the bottom layer arc sheet B and is connected and fixed by a steel strand penetrating through a steel strand duct; the top layer arc sheet A is arranged at the upper end of the middle layer arc sheet A, and the top layer arc sheet B is arranged on the middle layer arc sheet B and is connected and fixed by a steel strand running through a steel strand duct; the bottom surface of the top connecting section is provided with two symmetrical notches which are butted with the top layer arc sheet A, and the top connecting section is connected with the top layer arc sheet, the middle layer arc sheet and the bottom layer arc sheet into a whole by a steel strand which passes through a steel strand pore channel in the top connecting section.
And an internal reinforcing beam is arranged between vertical seams between the arc sheets and is connected with a bracket connected to the embedded plate through bolts.
The structure is characterized in that 4 vertical seams between the bottom arc sheet A and the bottom arc sheet B are provided, 4 groups of internal reinforcing beams are arranged between the 4 vertical seams in the internal reinforcing beams, each group of internal reinforcing beams are distributed at equal intervals along the vertical direction, the interval is 3-5 m, the internal reinforcing beams are connected with brackets connected to the embedded plate through bolts, and the reinforcing beams are preferably made of I-shaped steel; and the middle layer arc sheets and the top layer arc sheets are uniformly and vertically provided with internal stiffening beam structures which are the same as the bottom layer arc sheets.
When the horizontal seams among the bottom layer arc sheet, the middle layer arc sheet, the top layer arc sheet and the top connecting section are connected, leveling steel gaskets are arranged among the horizontal seams, rubber gaskets are pasted on two side edges in the wall thickness direction, and cementing materials are injected into the horizontal seams.
When the bottom layer arc sheet, the middle layer arc sheet, the top layer arc sheet and the vertical seams among the layers of the top connecting section are connected, rubber gaskets are pasted on two side edges in the wall thickness direction, and cementing materials are injected into the vertical seams.
The height of the bottom layer arc piece A and the height of the bottom layer arc piece B are 8-15 m, and the height of the bottom layer arc piece A is 0.5-1.5 m higher than that of the bottom layer arc piece B.
The tower frame formed by the bottom layer arc sheet, the middle layer arc sheet, the top layer arc sheet and the top connecting section is of a cone frustum structure with a gradient of 2-3 degrees.
The invention has the following remarkable effects: the assembled precast concrete tower for the wind turbine generator can overcome the problem of insufficient shear resistance and torsion resistance safety redundancy of the traditional concrete tower, is reliable to assemble and efficient to hoist, and can be widely applied to a concrete section of a full-hybrid tower or a hybrid tower of the wind turbine generator.
Drawings
FIG. 1 is a schematic structural view of an assembled precast concrete tower structure for a wind turbine generator according to the present invention;
FIG. 2 is a front view of an assembled precast concrete tower for a wind turbine generator set according to the present invention;
FIG. 3 is a top view of an assembled precast concrete tower for a wind turbine generator set according to the present invention;
FIG. 4 is a bottom view of an assembled precast concrete tower for a wind turbine generator set according to the present invention;
FIG. 5 is a front cross-sectional view of an assembled precast concrete tower for a wind turbine generator set according to the present invention;
FIG. 6 is a schematic perspective view of an arc sheet in an assembled precast concrete tower for a wind turbine generator according to the present invention;
FIG. 7 is a schematic structural diagram of a top connecting section of an assembled precast concrete tower for a wind turbine generator according to the present invention;
FIG. 8 is a schematic view of the connection of horizontal seams between arc segments in an assembled precast concrete tower for a wind turbine generator set according to the present invention;
FIG. 9 is a schematic view of the connection of vertical seams between arc sheets in an assembled precast concrete tower for a wind turbine generator according to the present invention;
in the figure: 1. a bottom layer arc sheet A; 2. a bottom layer arc sheet B; 3. an intermediate layer arc sheet A; 4. an intermediate layer arc sheet B; 5. a top arc sheet A; 6. a top arc sheet B; 7. a top connection section; 8. a steel strand pore channel; 9. an internal stiffening beam; 10. leveling the steel gasket; 11. a cementitious material; 12. a rubber gasket.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1 to 9, an assembled precast concrete tower for a wind turbine generator system comprises a bottom layer arc sheet, a middle layer arc sheet, a top layer arc sheet and a top connecting section, wherein the bottom layer arc sheet is provided with a plurality of layers of middle arc sheets, and the middle layer arc sheet is provided with the top layer arc sheet and the top connecting section to form a truncated cone structure with a gradient of 2 to 3 degrees; the bottom layer arc piece comprises two types of arc pieces, namely a bottom layer arc piece A1 and a bottom layer arc piece B2, the bottom layer arc piece A1 is higher than the bottom layer arc piece B2, and a plurality of bottom layer arc pieces A1 and a plurality of bottom layer arc pieces B2 are sequentially connected to form a bottom layer truncated cone structure, for example, the arc lengths of the bottom layer arc piece A1 and the bottom layer arc piece B2 are both one-fourth of circumference, the heights of the bottom layer arc piece A1 and the bottom layer arc piece B2 are 8-15 m, and the height of the bottom layer arc piece A1 is 0.5-1.5 m higher than that of the bottom layer arc piece B2; steel strand ducts 8 are distributed in the bottom arc sheet A1 and the bottom arc sheet B2 at equal intervals along the circumference, and the diameter of each steel strand duct 8 is 95-105 mm; the bottom layer arc sheets A1 and the bottom layer arc sheets B2 are alternately arranged on the base boss and are connected by steel strands penetrating through the pore channel in a tensioning manner; the structure comprises a pre-buried plate, a reinforcing beam, a plurality of bottom arc sheets A1, a plurality of bottom arc sheets B2, a plurality of groups of internal reinforcing beams 9, a plurality of groups of internal reinforcing beams B2 and a plurality of groups of internal reinforcing beams B2, wherein the internal reinforcing beams A1 and the bottom arc sheets B2 form a complete truncated cone structure, the 4 groups of internal reinforcing beams 9 are arranged among 4 vertical seams in the internal reinforcing beams, each group of internal reinforcing beams are distributed at equal intervals along the vertical direction, the intervals are 3; the middle layer arc sheets comprise a middle layer arc sheet A3 and a middle layer arc sheet B4, the height of the middle layer arc sheet A3 is the same as that of the middle layer arc sheet B4, the arc lengths of the middle layer arc sheet A3 and the middle layer arc sheet B4 which are alternately arranged are quarter of the circumference, the middle layer arc sheet A3 is installed at the upper end of the bottom layer arc sheet A1, the middle layer arc sheet B4 is installed on the bottom layer arc sheet B2 and is fixedly connected by steel strands penetrating through the steel strand duct 8; the top layer arc sheets comprise a top layer arc sheet A5 and a top layer arc sheet B6, wherein the top layer arc sheet A5 and the top layer arc sheet B6 are the same in height, the top layer arc sheet A5 and the top layer arc sheet B6 are alternately arranged, the arc lengths of the top layer arc sheet A5 and the top layer arc sheet B6 are all quarter of circumference, the top layer arc sheet A5 is installed at the upper end of the middle layer arc sheet A3, the top layer arc sheet B6 is installed on the middle layer arc sheet B4, and the top layer arc sheet A and the top layer arc sheet B36; the top connecting section 7 is a circular ring section, the top surface of the top connecting section is a plane and is connected with an engine room or a steel tower section bottom flange, the bottom surface of the top connecting section 7 is provided with two symmetrical notches which are butted with the top layer arc sheet A5 and pass through a steel strand pore channel 8 in the top connecting section 7 through a steel strand, and the top connecting section 7 is connected with the top layer arc sheet, the middle layer arc sheet and the bottom layer arc sheet to form a whole; the vertical seams of the middle layer arc sheets and the top layer arc sheets are uniformly provided with internal stiffening beam 9 structures which are the same as the bottom layer arc sheets; when horizontal seams among the bottom layer arc sheet, the middle layer arc sheet, the top layer arc sheet and the top connecting section 7 are connected, leveling steel gaskets 10 are installed among the horizontal seams, rubber gaskets 12 are adhered to two sides in the wall thickness direction, and cementing materials 11 are injected into the horizontal seams, wherein the cementing materials 11 are preferably inorganic cementing materials; when the vertical seams among the arc pieces are connected, rubber gaskets 12 are stuck on two sides in the wall thickness direction, and cementing materials 11 are injected into the vertical seams.
The invention relates to a general construction process of an assembled precast concrete tower for a wind turbine generator, which comprises the following steps:
s1, hoisting a bottom layer arc sheet A1 and a bottom layer arc sheet B2;
s2, installing an internal reinforcing beam 9 of the bottom layer arc sheet;
s3, carrying out grouting connection on a vertical seam between the bottom layer arc sheet A1 and the bottom layer arc sheet B2;
s4, arranging leveling steel gaskets 10 on the top surfaces of the bottom layer arc sheet A1 and the bottom layer arc sheet B2;
s5, hoisting an intermediate layer arc sheet A3 and an intermediate layer arc sheet B4;
s6, mounting an internal reinforcing beam 9 of the middle layer arc sheet;
s7, carrying out horizontal seam grouting connection between the bottom layer arc piece and the middle layer arc piece;
s8, carrying out vertical seam grouting connection between the middle layer arc piece A3 and the middle layer arc piece B4;
s9, arranging leveling steel gaskets 10 on the top surfaces of the middle layer arc sheets A3 and the middle layer arc sheets B4;
s10, completing the hoisting of all arc pieces, completing the connection of horizontal seams and vertical seams and completing the installation of the internal stiffening beam 9;
s11, hoisting the top connecting section 7;
s12, performing horizontal seam grouting connection between the top layer arc sheet and the top connecting section 7;
s13, pulling the steel strand;
and S14, tensioning according to the specified tensioning requirement, wherein the bottom layer arc sheet is connected with the base boss in a tensioning manner, and the top layer arc sheet is connected with the top connecting section 7 in a tensioning manner.

Claims (10)

1. The utility model provides a can assemble precast concrete tower for wind turbine generator system which characterized in that: the tower comprises a bottom layer arc sheet, a middle layer arc sheet, a top layer arc sheet and a top connecting section (7), wherein a plurality of steel strand pore channels (8) are distributed on the bottom layer arc sheet, the middle layer arc sheet, the top layer arc sheet and the top connecting section along the circumference, the bottom layer arc sheet, the middle layer arc sheet and the top layer arc sheet are sequentially installed upwards and penetrate through the steel strand pore channels (8) on each arc sheet through steel strands for connection, a plurality of arc sheets on each layer form a conical frustum structure, and an internal reinforcing beam (9) is arranged on a vertical seam; the top connecting section (7) is a circular ring section, the upper end of the top connecting section is a plane, and the top connecting section is connected with the top arc sheet in a matching way through a steel strand; the horizontal seams of the bottom layer arc sheet, the middle layer arc sheet and the top layer arc sheet are arranged in a staggered manner; the number of said intermediate deck arc segments is determined based on the total height of the concrete tower.
2. An assemblable precast concrete tower for a wind turbine unit according to claim 1, characterised in that: the bottom layer arc sheet comprises two types of arc sheets, namely a bottom layer arc sheet A (1) and a bottom layer arc sheet B (2); the bottom layer arc sheets A (1) are higher than the bottom layer arc sheets B (2), and the bottom layer arc sheets A (1) and the bottom layer arc sheets B (2) are alternately connected to form a bottom layer truncated cone structure; the middle layer arc sheet and the top layer arc sheet have the same height.
3. An assemblable precast concrete tower for a wind turbine unit according to claim 1, characterised in that: the bottom layer arc piece comprises two types of arc pieces, namely a bottom layer arc piece A (1) and a bottom layer arc piece B (2), the arc lengths of the bottom layer arc piece A (1) and the bottom layer arc piece B (2) are quarter of the circumference, and the bottom layer arc piece A (1) is higher than the bottom layer arc piece B (2); the middle layer arc piece comprises a middle layer arc piece A (3) and a middle layer arc piece B (4), and the heights of the middle layer arc piece A (3) and the middle layer arc piece B (4) are the same; the top layer arc piece comprises a top layer arc piece A (5) and a top layer arc piece B (6), and the top layer arc piece A (5) and the top layer arc piece B (6) are the same in height.
4. An assemblable precast concrete tower for a wind turbine unit according to claim 3, characterised in that: the bottom layer arc sheets A (1) and the bottom layer arc sheets B (2) are alternately arranged on the base boss and are connected by steel strands penetrating through the steel strand pore passages (8) in a tensioning manner; the middle layer arc sheet A (3) is arranged at the upper end of the bottom layer arc sheet A (1), the middle layer arc sheet B (4) is arranged on the bottom layer arc sheet B (2) and is connected and fixed by a steel strand penetrating through a steel strand pore passage (8); the top layer arc sheet A (5) is arranged at the upper end of the middle layer arc sheet A (3), the top layer arc sheet B (6) is arranged on the middle layer arc sheet B (4) and is connected and fixed by steel strands running through the steel strand pore passage (8); the bottom surface of the top connecting section (7) is provided with two symmetrical notches which are butted with the top layer arc sheet A (5), and the top connecting section (7) is connected with the top layer arc sheet, the middle layer arc sheet and the bottom layer arc sheet to form a whole by a steel strand penetrating through a steel strand pore passage (8) in the top connecting section (7).
5. An assembled precast concrete tower for a wind turbine according to any one of claims 1 to 4, characterized in that: an internal reinforcing beam (9) is arranged between vertical seams between the arc sheets, and the internal reinforcing beam (9) is connected with a bracket connected to the embedded plate through bolts.
6. An assemblable precast concrete tower for a wind turbine unit according to claim 4, characterised in that: the structure is characterized in that 4 vertical seams between the bottom arc sheet A (1) and the bottom arc sheet B (2) are provided, 4 groups of internal stiffening beams (9) are arranged between the 4 vertical seams in the bottom arc sheet A, each group of internal stiffening beams are distributed at equal intervals along the vertical direction, the intervals are 3-5 m, and the internal stiffening beams (9) are connected with brackets connected to the embedded plate through bolts; and the middle layer arc sheets and the top layer arc sheets are uniformly and vertically sewed with internal stiffening beam (9) structures which are the same as those of the bottom layer arc sheets.
7. An assembled precast concrete tower for a wind turbine as claimed in any one of claims 1 to 4, characterized in that: when the horizontal seams among the bottom layer arc sheet, the middle layer arc sheet, the top layer arc sheet and the top connecting section (7) are connected, leveling steel gaskets (10) are arranged among the horizontal seams, rubber gaskets (12) are pasted on two side edges in the wall thickness direction, and cementing materials (11) are injected into the horizontal seams.
8. An assembled precast concrete tower for a wind turbine as claimed in any one of claims 1 to 4, characterized in that: when the bottom layer arc sheet, the middle layer arc sheet, the top layer arc sheet and the top connecting section (7) are connected through the vertical seams, rubber gaskets (12) are pasted on two side edges in the wall thickness direction, and cementing materials (11) are injected into the vertical seams.
9. An assemblable precast concrete tower for a wind turbine unit according to claim 4, characterised in that: the height of the bottom layer arc piece A (1) and the height of the bottom layer arc piece B (2) are 8-15 m, and the height of the bottom layer arc piece A (1) is 0.5-1.5 m higher than that of the bottom layer arc piece B (2).
10. An assemblable precast concrete tower for a wind turbine unit according to claim 1, characterised in that: the tower frame formed by the bottom layer arc sheet, the middle layer arc sheet, the top layer arc sheet and the top connecting section is of a cone frustum structure with a gradient of 2-3 degrees.
CN201921922283.XU 2019-11-08 2019-11-08 A prefabricated concrete tower of assembled for wind turbine generator system Active CN211737373U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921922283.XU CN211737373U (en) 2019-11-08 2019-11-08 A prefabricated concrete tower of assembled for wind turbine generator system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921922283.XU CN211737373U (en) 2019-11-08 2019-11-08 A prefabricated concrete tower of assembled for wind turbine generator system

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Publication Number Publication Date
CN211737373U true CN211737373U (en) 2020-10-23

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Effective date of registration: 20221013

Address after: No.8, Huancheng Road, Fengcheng Town, Tianzhu County, Qiandongnan Miao and Dong Autonomous Prefecture, Guizhou 556600

Patentee after: Wu Weiyue

Address before: 100176 Aerospace Science Park, No. 6, Jinxiu Street, Daxing District Economic and Technological Development Zone, Beijing

Patentee before: BEIJING WANYUAN INDUSTRY Co.,Ltd.