Assembly type wind power tower tube structure

Abstract

The utility model discloses an assembly type wind power tower tube structure which comprises a plurality of tower rings, each tower ring is formed by splicing a plurality of tower pieces, prestressed holes are formed in the circumferential direction of the tower pieces, the prestressed holes form a closed annular hole channel, and annular prestressed tendons are installed in the annular hole channel. Concave tenons are arranged on the bottom surfaces and the left side surfaces of the tower pieces, and convex tenons are arranged on the top surfaces and the right side surfaces of the tower pieces; shallow seams are formed in the tower pieces; a water stop rubber strip is arranged in the shallow opening seam; vertical holes penetrating through the upper face and the lower face are formed in the tower pieces, after the multiple tower rings are assembled, the corresponding vertical holes form vertical hole channels penetrating through the upper end and the lower end of the tower barrel, and vertical prestressed tendons are installed in the vertical hole channels. According to the tower tube structure, the manufacturing cost is effectively reduced and the construction period is shortened in a factory prefabrication and field assembly mode, annular and vertical prestress is applied to the whole tower tube structure, the structural strength is improved, and the tower tube structure has high durability and long service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power tower construction technical field, concretely relates to a kind of fabricated wind power tower structure. BACKGROUND

[0002] With the increasing demand for clean energy worldwide, wind power, as an important source of renewable energy, is expanding in scale. In order to make more efficient use of wind energy resources, wind turbine generators are constantly developing towards larger capacity and higher hub height. In wind power projects, the cost of the tower accounts for a large proportion. Traditional manufacturing and installation methods can result in high costs, for example, on-site pouring of concrete towers requires a long construction period, involves a large amount of on-site manpower and material resources, and the quality control is relatively difficult. The utility model patent with publication number CN 118242227 A discloses a wind power tower, which includes a tower body and an anti-loose structure. The tower body includes multiple segmented cylinder segments, which are sequentially connected along the circumference of the tower body. A connecting structure is provided between adjacent two segmented cylinder segments. The anti-loose structure is provided between adjacent two segmented cylinder segments to prevent the connecting structure from loosening. The multiple segmented cylinder segments are connected by the connecting structure, and the anti-loose structure is used to prevent the connecting structure from loosening, thereby ensuring the stability of the tower connection. However, the overall structural strength of the tower after connection is relatively poor, and the water infiltration in the tower is serious, which seriously affects the service life of the wind tower. SUMMARY

[0003] The utility model aims to provide a kind of fabricated wind power tower structure, the tower is effectively reduced manufacturing cost by the way of factory prefabrication and on-site assembly, shorten construction period, its whole adds circumferential and vertical prestress, increases structural strength, with higher durability and service life.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A kind of fabricated wind power tower structure, including multiple tower rings gradually decreasing from bottom to top, each tower ring is spliced by multiple tower pieces, prestressed holes are provided in the circumferential direction of the tower piece, when a tower ring is spliced, the prestressed holes form a closed annular channel, and circumferential prestressed reinforcement is installed in the annular channel. A concave dove is provided on the bottom surface and the left side surface of the tower piece, and a convex dove compatible with the concave dove is provided on the top surface and the right side surface of the tower piece. A shallow slit is provided on the upper and lower left and right four planes of the tower piece, and multiple shallow slits are provided at intervals. A waterproof rubber strip is fixedly arranged in the shallow slit. A vertical hole is provided on the tower piece, which penetrates the upper and lower surfaces. The corresponding vertical holes of multiple tower rings form a vertical channel that penetrates the upper and lower ends of the tower after assembly, and vertical prestressed reinforcement is installed in the vertical channel.

[0006] Preferably, the inner surface of one of the tower pieces of each tower ring is provided with a prestressed hole inlet and a prestressed hole outlet, one end of the ring prestressed tendon is inserted into the prestressed hole inlet and is inserted out of the prestressed hole outlet, and prestress is applied through the two ends of the ring prestressed tendon.

[0007] Preferably, an anchoring assembly is installed at the prestressed hole inlet and the prestressed hole outlet, respectively, and the two ends of the ring prestressed tendon are installed on one of the anchoring assemblies, respectively.

[0008] Preferably, the anchoring assembly comprises an anchor pad and a plurality of clamping pieces installed on the anchor pad, a through hole is provided on the anchor pad, the plurality of clamping pieces are installed in the through hole, and the end of the ring prestressed tendon is installed between the plurality of clamping pieces.

[0009] Preferably, an arc-shaped connecting hole is provided on the tower piece, the arc-shaped connecting hole passes through two adjacent side surfaces of the tower piece, when two tower pieces are spliced, an arc-shaped connecting piece is used to pass through two arc-shaped connecting holes corresponding in position to fix and connect the two tower pieces, and two adjacent tower rings are fixed and connected through arc-shaped connecting pieces after splicing.

[0010] Preferably, a vertical hole passing through the upper and lower surfaces is provided on the tower piece, a plurality of tower rings are spliced, corresponding vertical holes form a vertical hole channel passing through the upper and lower ends of the tower barrel, and a vertical prestressed tendon is installed in the vertical hole channel.

[0011] In the utility model, the tower piece is prefabricated in a factory according to size requirements, and then is quickly spliced at a construction site, so that the manufacturing cost is effectively reduced, the construction period is shortened, and the economic benefit of a wind power project is improved. The concave and convex structures arranged in the circumferential direction of the tower piece are used for positioning two adjacent tower pieces and increasing the shear resistance after structural connection. The shallow joints arranged in the circumferential direction of the tower piece facilitate the installation of the waterstop rubber strip, the waterproof capacity of the connection position is improved through a plurality of waterstop rubber strips, and the phenomenon of water seepage in the tower during use is avoided.

[0012] After one tower ring is spliced, ring prestress is applied to form a whole, and the structure is stable. After each tower ring is hoisted and spliced, vertical prestress is applied to the whole tower barrel through the vertical prestressed tendon, so that a tower barrel structure with high structural stability and long service life is formed.

[0013] The tower piece is constructed by a factory pre-assembly and on-site assembly operation mode, avoids on-site wet operation, and reduces construction time and cost. Through prestress application, the tower drum has higher rigidity, stability and durability, can better resist wind load and other external force actions, reduces deformation and vibration of the tower drum, improves operation safety of the wind turbine generator unit, prolongs service life of the tower drum, and reduces maintenance cost. When the tower ring is assembled, the position of each tower piece is adjusted by using a foundation connecting part, all tower rings with different sizes can be assembled on one foundation connecting part, has strong adaptability, improves assembly efficiency, and reduces overall cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a tower piece structure schematic view of the utility model;

[0015] Figure 2 It is a tower drum overall structure schematic view of the utility model;

[0016] Figure 3 It is an anchoring assembly structure schematic view of the utility model;

[0017] Figure 4 It is a schematic view of the connection state of two adjacent tower pieces of the utility model;

[0018] Figure 5 It is a schematic view of the circumferential prestressed tendon plane structure of the utility model;

[0019] In the drawing: 1, tower ring; 2, circumferential prestressed tendon; 3, anchoring assembly; 4, vertical prestressed tendon; 6, arc-shaped connecting hole; 7, arc-shaped connecting piece; 10, tower piece; 11, female swallow; 12, male swallow; 13, shallow mouth slit; 14, prestressed hole; 15, vertical hole; 30, anchor pad; 31, clamping piece. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawings:

[0021] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 indicated, an assembled wind power tower drum structure includes multiple tower rings 1 gradually decreasing from bottom to top, and the multiple tower rings 1 are vertically sequentially assembled to form a tower drum structure. Each tower ring 1 is spliced by multiple tower pieces 10, a female swallow 11 is arranged on the bottom surface and the left side surface of the tower piece, and a male swallow 12 matched with the female swallow 11 is arranged on the top surface and the right side surface of the tower piece; two adjacent tower pieces 10 are positioned and connected through the female swallow 11 and the male swallow 12.

[0022] The shallow slit 13 is arranged on the upper, lower, left and right planes of the tower piece 10, and is arranged through the circumferential direction of the tower piece 10. The shallow slit 13 is arranged in multiple rows. A water stop rubber strip is arranged in the shallow slit 13 by pasting and fixing. The water stop rubber strip expands when encountering water, has good waterproof capacity, and avoids external water entering the inside of the tower drum through the joint gap.

[0023] The prestressed hole 14 is arranged on the inner circumferential direction of the tower piece 10. When one tower ring 1 is assembled, the corresponding prestressed hole 14 forms a closed annular channel. The circumferential prestressed tendon 2 is arranged in the annular channel. Specifically, the prestressed hole entrance and the prestressed hole exit are arranged on the inner surface of one of the tower pieces 10 of each tower ring 1. One end of the circumferential prestressed tendon 2 is inserted into the prestressed hole entrance and exits from the prestressed hole exit. The prestress is applied through the two ends of the circumferential prestressed tendon 2. Of course, a construction groove can be arranged on the tower piece 10. The prestressed hole entrance and the prestressed hole exit are arranged in the construction groove. When the prestress of the circumferential prestressed tendon 2 is applied, the construction groove is sealed. In a preferred embodiment, the end of each annular channel is in a spatially inclined and crossed shape. The two ends of the annular channel are inclined and crossed and exit the inner surface of the tower piece 10.

[0024] The arc-shaped connecting hole 6 is arranged on the tower piece 10. Each arc-shaped connecting hole 6 passes through the adjacent two side surfaces of the tower piece 10, which can be the top surface and the left side surface, the top surface and the right side surface, the top surface and the inner side surface, the left side surface and the inner side surface, the right side surface and the inner side surface, the bottom surface and the left side surface, the bottom surface and the right side surface, or the bottom surface and the inner side surface. When two tower pieces are assembled, the arc-shaped connecting piece 7 is used to pass through the two arc-shaped connecting holes 6 at corresponding positions to fixedly connect the two tower pieces 10. The end of the arc-shaped connecting piece 7 has external threads, which facilitates connection and fixation. The adjacent two tower rings 1 are also fixedly connected by the arc-shaped connecting piece 7.

[0025] In a preferred embodiment, the anchor assembly 3 is arranged at the prestressed hole entrance and the prestressed hole exit, respectively. The two ends of the circumferential prestressed tendon 2 are arranged on one anchor assembly 3, respectively.

[0026] The anchor assembly 3 includes an anchor pad 30 fixedly arranged at the position of the prestressed hole entrance or the prestressed hole exit, and a plurality of clamping pieces 31 arranged on the anchor pad 30. The anchor pad 30 is provided with a through hole for arranging the clamping pieces 31. The plurality of clamping pieces 31 are arranged in the through hole. The end of the circumferential prestressed tendon 2 is arranged between the plurality of clamping pieces 31. After the prestress is applied, the plurality of clamping pieces 31 are fastened to ensure the stability of the structure.

[0027] The vertical hole 15 is arranged on the tower piece 10, and the corresponding vertical holes 15 of the plurality of tower rings 1 form vertical hole channels penetrating the upper and lower ends of the tower drum after assembly, and the vertical prestressed tendons 4 are installed in the vertical hole channels.

[0028] The installation method of the fabricated wind power tower drum structure comprises the following steps:

[0029] Step one, the tower piece 10 is prefabricated, the reinforcement cage is placed in different specifications of molds, the vertical pipes and horizontal arc-shaped pipes are arranged at the specified positions in the molds, the concrete is slowly introduced into the molds, and the vibrating rod is used for vibrating; after pouring, the concrete surface is leveled, and after the concrete strength reaches the preset value, the mold is removed; the vertical pipe pouring forms the vertical hole 15, and the horizontal arc-shaped pipe pouring forms the prestressed hole 14.

[0030] Step two, the tower ring 1 is assembled, the tower piece 10 is transported to the construction site, the foundation connecting part 5 is arranged at the flat position of the construction site, the tower piece 10 is hoisted on the foundation connecting part one by one for assembly, the circumferential prestressed tendon 2 is sequentially installed when the adjacent two tower pieces 10 are installed, and is fixedly connected through the arc-shaped connecting piece 7; after the assembly of one tower ring 1 is completed, the circumferential prestressed tendon 2 is prestressed, the tower ring 1 is hoisted after the prestress is applied, and then the next tower ring 1 is assembled one by one.

[0031] Step three, the tower ring 1 is assembled, after the prestress of the lowermost tower ring 1 is applied, the tower ring 1 is hoisted to the tower drum foundation, a plurality of vertical prestressed tendons 4 are inserted into the corresponding vertical hole channels, the tower ring 1 is installed one by one from bottom to top, and the adjacent two tower rings 1 are fixedly connected through the arc-shaped connecting piece 7 to form the tower drum, and the plurality of vertical prestressed tendons 4 are prestressed after installation to complete the construction.

[0032] The above embodiments are only a number of descriptions of the concept and implementation of the present application, and are not limited thereto, and under the concept of the present application, the technical solutions without substantial transformation are still within the protection scope.

Claims

1. A fabricated wind turbine tower structure comprising a plurality of tower rings that are progressively smaller from bottom to top, each tower ring being assembled from a plurality of tower segments, characterized in that: The prestressed holes are arranged in the circumferential direction of the tower piece, and form closed annular channels after the tower ring is assembled, and the circumferential prestressed tendons are arranged in the annular channels; the concave sparrow is arranged on the bottom surface and the left side surface of the tower piece, and the convex sparrow matched with the concave sparrow is arranged on the top surface and the right side surface of the tower piece; the shallow mouth slits are arranged on the upper, lower, left and right four surfaces of the tower piece and are connected, and the shallow mouth slits are arranged in multiple rows; the waterproof rubber strips are fixedly arranged in the shallow mouth slits.

2. The fabricated wind power tower structure according to claim 1, characterized in that: The prestressed hole entrance and the prestressed hole exit are arranged on the inner surface of one tower piece of each tower ring, one end of the circumferential prestressed tendon is inserted into the prestressed hole entrance and is taken out of the prestressed hole exit, and the prestress is applied through the two ends of the circumferential prestressed tendon.

3. The fabricated wind power tower structure according to claim 2, characterized in that: The anchor assembly is arranged at the prestressed hole entrance and the prestressed hole exit, respectively, and the two ends of the circumferential prestressed tendon are arranged on one anchor assembly, respectively.

4. The fabricated wind power tower structure according to claim 3, characterized in that: The anchor assembly comprises an anchor base plate and a plurality of clamping pieces arranged on the anchor base plate, a through hole is arranged on the anchor base plate, the plurality of clamping pieces are arranged in the through hole, and the end of the circumferential prestressed tendon is arranged between the plurality of clamping pieces.

5. The fabricated wind power tower structure according to claim 1 or 3, characterized in that: The arc-shaped connecting holes are arranged on the tower piece and pass through the adjacent two side surfaces of the tower piece; when two tower pieces are assembled, the arc-shaped connecting pieces are used to pass through the two arc-shaped connecting holes corresponding in position to fix and connect the two tower pieces; when two adjacent tower rings are assembled, the arc-shaped connecting pieces are also used to fix and connect the two tower rings.

6. The fabricated wind power tower structure according to claim 5, characterized in that: The vertical holes passing through the upper and lower surfaces are arranged on the tower piece, the corresponding vertical holes of the plurality of tower rings form the vertical hole channels passing through the upper and lower ends of the tower drum after the plurality of tower rings are assembled, and the vertical prestressed tendons are arranged in the vertical hole channels.

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