CN217873106U

CN217873106U - Lattice tower of wind generating set

Info

Publication number: CN217873106U
Application number: CN202222215250.XU
Authority: CN
Inventors: 崔新维; 魏锋; 崔逸南
Original assignee: Suzhou Xinsanli Wind Power Technology Co ltd
Current assignee: Suzhou Xinsanli Wind Power Technology Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-11-22
Anticipated expiration: 2032-08-23

Abstract

The utility model discloses a wind generating set lattice pylon. The tower is at least composed of three main supporting legs, each main supporting leg is composed of three round tubes welded with a plurality of web members, each main supporting leg is connected by a plurality of auxiliary rod members, the three round tubes forming the main supporting legs are divided into two types, the first type of round tubes are of a steel tube concrete structure, the second type of round tubes are common steel tubes, and the auxiliary rod members are connected with the same horizontal position connecting nodes of the round tubes into a whole through the web members. And the lattice tower is connected with a tower barrel adapter of the wind generating set and is connected with the foundation. The tower has the advantages of small floor area, high safety performance and high material utilization rate, can simplify the manufacturing process of the wind driven generator supporting structure, and reduces the production and transportation cost of the wind driven generator supporting structure.

Description

Lattice tower of wind generating set

Technical Field

The utility model belongs to the technical field of wind power generation, concretely relates to wind generating set lattice tower.

Background

Wind power is a power generation mode with the greatest large-scale development value and commercial development prospect in the field of renewable energy sources, and available wind energy is widely distributed and has huge reserves in the global scope.

The tower is taken as an important component of a wind generating set and plays an important role in transmitting wind pressure load and unit gravity load to a base part, the design level of the tower directly influences the working performance and reliability of the wind generating set, at present, the tower in the field of wind power generation generally adopts a cylindrical structure formed by rolling steel plates, the manufacturing method is simple, the working space is safe, and the tower is popular in the field of wind power generation.

CN207048900U, a truss tower is provided, the defect that a circular cylinder is inconvenient to transport is overcome by the scheme, and the pure truss tower is not suitable for a wind generating set with frequent random load due to incomplete symmetry of the structure.

CN112922785A, a truss type tower is proposed, but the scheme is based on a truss concept, the main structure form is also a traditional tower form, only the diameter of the tower is reduced, and the truss structure is not really introduced into the tower of the wind generating set.

Disclosure of Invention

In view of this, the utility model provides an aim at provides a wind generating set lattice tower to solve the drum tower diameter too huge, the transportation difficulty, and the single pole leg structure of conventional truss structure pylon is unstable, and bearing capacity is single thin, and the bearing direction has the problem of limitation

To achieve the above object, a first aspect provides a wind turbine generator system lattice tower, comprising: main landing leg and auxiliary rod spare.

The main supporting leg is in a latticed column form formed by three round tubes, and every two round tubes are not parallel to each other.

On the cross section of the main supporting leg, the connecting line of the centers of the sections of the three circular tubes is triangular, and the connecting line of the centers of the triangular centroids is the central line of the main supporting leg; the two round tubes of the main supporting leg are first round tubes, and the other round tube of the main supporting leg is a second round tube.

The basic shape of the lattice tower is a polygonal pyramid frustum shape at least comprising three side edges, the center line of the main supporting leg is superposed with the side edges of the polygonal pyramid, the first type of round tube is positioned on the outer side of the polygonal pyramid frustum, and the second type of round tube is positioned on the inner side of the polygonal pyramid frustum.

It is adjacent be provided with a plurality of between the main landing leg auxiliary member spare, auxiliary member spare contains alternately down tube and horizontal pole, auxiliary member spare through the hookup node with the hookup of first type pipe, lie in same horizontal position on the main landing leg two be provided with lattice column web member between the hookup node, the form of web member is the horizontal pole.

The basic shape of the main supporting leg is an inverted triangular pyramid shape, and the axes of the three circular tubes are superposed with the side edges of the inverted triangular pyramid.

Every the pipe is formed by the concatenation of the multisection pipe of the same diameter with the same wall thickness, perhaps forms by the concatenation of the multisection pipe of different diameters or different wall thicknesses, and the concatenation mode is flange joint or welds as an organic whole.

The first round pipe is a concrete steel pipe, the second round pipe is a common steel pipe, concrete injected into the concrete steel pipe is dense concrete, vibration is sufficient during pouring, air bubbles are not allowed to be generated, pre-branch steel pipe concrete can be selected for the steel pipe concrete, concrete can be injected into the round pipe on site, and vibration is carried out to form the steel pipe concrete.

The main supporting leg is provided with at least one inhaul cable, two ends of the inhaul cable are respectively positioned at the top end and the bottom end of the main supporting leg, and the zipper is fixed through anchorage devices at the top end and the bottom end; the stay cable is arranged between or inside the concrete steel pipes in the main supporting leg, the stay cable is provided with prestress, and the prestress of the zipper is tensioned before the concrete of the steel pipes is poured.

The top end of each main supporting leg is connected with an adapter piece in a tower frame of the wind generating set, the bottom end of each main supporting leg is connected with a foundation of the wind generating set, and the main supporting legs are connected with the adapter piece and the foundation in a flange connection or welding mode.

The top ends of the three round pipes are respectively provided with an independent connecting structure which is used for connecting with the adapter; the bottom ends of the three circular tubes are provided with integrated connecting structures, and the integrated connecting structures are used for being connected with the foundation.

The connecting surface of the independent connecting structure is perpendicular to the axis of the round pipe, the connecting surface of the integrated connecting structure is perpendicular to the central line of the main supporting leg, and meanwhile, the connecting surface of the integrated connecting structure is parallel to the end surface of the base.

A second aspect provides a wind park comprising a wind park lattice tower as described in the first aspect.

The beneficial effects of the above technical scheme include:

the above technical scheme, the utility model, can not use the steel cylinder tower of major diameter, make the pylon become three pillar owner landing leg lattice truss structure, make things convenient for modular production and long distance mass transport, concrete filled steel tube's design module has strengthened the compressive property on pylon basis simultaneously, the introduction of cable unit has promoted the tensile strength on pylon basis, the form of the big triangle lower part in upper portion is little triangular, when guaranteeing wind generating set pylon bearing capacity, the investigation area in soil has been reduced, and the basis can prevent seepage, the resistance to compression, reduce inhomogeneous settlement.

Drawings

Fig. 1 is a front view of a lattice tower of a wind turbine generator system according to an embodiment of the present invention;

fig. 2 is a top view of a lattice tower of a wind turbine generator system according to an embodiment of the present invention;

fig. 3 is a partial enlarged view of a main leg of a lattice tower of a wind turbine generator system according to an embodiment of the present invention;

fig. 4 is an enlarged view of an upper portion of a support leg of a lattice tower of a wind turbine generator system according to an embodiment of the present invention;

fig. 5 is an enlarged view of a lower portion of a support leg of a lattice tower of a wind turbine generator system according to an embodiment of the present invention;

fig. 6 is a bottom view of a lattice tower of a wind turbine generator system according to an embodiment of the present invention;

fig. 7 is a partial enlarged view of a lattice tower guide of a wind turbine generator system according to an embodiment of the present invention.

The reference numbers illustrate:

1. an adapter; 2. a main leg; 2.1, a first type round pipe; 2.2, a second round pipe; 3. a lattice column web member; 4. an auxiliary bar member; 5. a foundation; 5.1, a bearing platform; 5.2, tubular piles; 6. A horizontal cross pull rod; 7. a pull cable; 8. a guide frame; 9 ground tackle

It is noted that the above-described figures are intended to illustrate the features of the invention and are not intended to show any actual structure or to reflect the details of the dimensions, relative proportions, etc. of the various components. In order to more clearly illustrate the principles of the present invention and to avoid obscuring the same with unnecessary detail, the examples in the figures have been simplified. These illustrations do not present an inconvenience to those skilled in the relevant art in understanding the present invention, and an actual wind turbine generator system lattice tower may include more components.

Detailed Description

In order to make the purpose and technical solution of the embodiment of the present invention clearer, the following description is combined with the relevant drawings of the embodiment of the present invention to carry out complete description on the embodiment of the present invention. This patent describes only a few embodiments and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

After the wind generating set is large-sized, if the foundation in the tower barrel structure form is adopted, the diameter of the tower barrel becomes large, the hoisting and long-distance transportation are not facilitated, the cost is increased, and the structural stability and the safety are caused to have problems after the tower frames are all in the single-strut truss structure form. Therefore, the embodiment of the utility model provides an invent wind generating set lattice tower, can be with tower modular production, the transportation of being convenient for and installation have guaranteed the reliable and stable of tower simultaneously to can reduce wind generating set area.

The utility model discloses mainly include main landing leg 2 and auxiliary rod piece 4, and two pipes of main landing leg 2 are the steel pipe concrete structure, simultaneously be equipped with prestressing force's cable 7 between the steel pipe concrete structure, adjacent pass through flange joint or weld as an organic wholely by auxiliary rod piece between the main landing leg 2 for maintain the relative position of main landing leg 2, promote the stability of wind generating set lattice tower.

The utility model discloses the principle that utilizes has: 1. the concrete-filled steel tube has remarkable compression resistance and weaker tensile resistance and compression resistance, and the steel tube concrete is applied with pressure in advance through the prestressed inhaul cable, so that the value of tension can be reduced when the steel tube concrete structure is subjected to the tension; 2. the truss structure dead weight is light and handy, and the member is mostly two power poles, and the permeability of wind is strong.

As shown in fig. 1, a wind turbine generator system lattice tower comprises: main supporting legs 2, auxiliary rods and inhaul cables 7.

2 main parts of main landing leg comprise three pipes, the central axis of three pipes is nonparallel mutually, every pipe is welded into the straight tube by the steel pipe of the same pipe diameter of 5 sections, the pipe diameter is 280mm, the wall thickness is 12mm from the upper portion of main landing leg to the lower part in proper order, 10mm, 8mm, the distribution of this kind of pipe diameter and wall thickness, make full use of the mechanical properties of material, can practice thrift the steel quantity under the prerequisite of guaranteeing the bearing capacity, save manufacturing cost.

Furthermore, the connecting lines of the centers of the three circular tubes on the cross section of the main supporting leg are triangular, and the connecting line of the centers of the connecting lines of the centroids of the triangular shapes is the central line of the main supporting leg; the three round tubes of the main supporting leg are divided into two types, wherein two round tubes are a first type round tube 2.1, the other round tube is a second type round tube 2.2, and the triangular area at the upper part of the main supporting leg 2 is 8m ² The triangular area at the lower part of the main supporting leg is 2m ² 。

Furthermore, the basic shape of the lattice tower is a quadrangular frustum pyramid shape, the central line of the main supporting leg 2 is superposed with the side edge of the quadrangular frustum pyramid, the first type of round tube 2.1 is positioned on the outer side of the quadrangular frustum pyramid, the second type of round tube 2.2 is positioned on the inner side of the quadrangular frustum pyramid, the top of the quadrangular frustum pyramid is a square with the side length of 8.5m, and the bottom of the quadrangular frustum pyramid is a square with the side length of 65 m.

Furthermore, an auxiliary rod member 4 is arranged between each main supporting leg 2, the auxiliary rod member 4 is a cross diagonal rod, the diameter of the rod is 168mm, the wall thickness is 6mm, the shearing support is mainly provided for the main supporting leg 2 of the lattice tower, the torsion resistance and the tensile resistance of the structure are improved, meanwhile, the auxiliary rod member 4 is connected with a first type of circular tube 2.1 through a connecting node, a web member 3 of the lattice column is arranged between two connecting nodes at the same horizontal position, the diameter of the web member 3 is 180mm, the wall thickness is 10mm, the connecting node is a welding node in the lattice tower, and meanwhile, a horizontal cross pull rod 6 is further arranged between the main supporting legs 2 and used for improving the stability of the lattice tower.

Further, the first type of circular tube 2.1 of the lattice tower is of a steel pipe concrete structure, wherein concrete is poured into the first type of circular tube 2.1 when the steel pipe concrete structure leaves a factory, the strength grade of the concrete is C60, the waterproof grade is P8, the concrete is vibrated and compacted after the first type of circular tube 2.1, and the concrete is not allowed to be isolated.

Furthermore, every main leg 2 is provided with a cable 7, the cable 7 both ends are located the top and the bottom of main leg, fix through the ground tackle 9 that is located 2 tops of main leg and 2 bottoms of main leg, it has 15 guide brackets to weld on the web member 3 of lattice column simultaneously, as the guider of cable 7, avoid interfering with all the other member spares, guide bracket 7 is two 15cm long, the pipe that the diameter 100mm wall thickness is 4mm is through welding on the web member 7 of lattice column, the central line of these two pipes is the V son shape, the diameter of cable 7 is 3cm simultaneously, the cable body is the steel strand wires, the pretension that sets up is not less than 150KN.

Furthermore, the top end of a main supporting leg 2 of each lattice tower is connected with an adapter 1 in the tower of the wind generating set, the bottom end of the main supporting leg 2 of each lattice tower is connected with a foundation 5 of the wind generating set, wherein the joint of the main supporting leg 2 of each lattice tower and the adapter 1 is in a welding mode, the bottom of the adapter is provided with an interface connected with a circular tube of the main supporting leg 2, the circular tube is welded with the interface, the bottom of the main supporting leg 2 is provided with a flange integrated with the circular tube of the main supporting leg 2, the end surface of the foundation connected with the bottom of the main supporting leg 2 is provided with a foundation flange, and the foundation 5 is connected with the bottom of the main supporting leg 2 in a flange and fastener mode during installation.

Further, the connecting surface of the foundation 5 is perpendicular to the axis of the round pipe, the foundation 5 is a pile type foundation and comprises a bearing platform 5.1 and a tubular pile 5.2, the bearing platform 5.1 is a cast-in-place concrete reinforcement structure, the bearing platform 5.1 is a cube structure with the length, the width and the height being 300cm, 300cm and 200cm, the poured concrete is C60 in grade, the waterproof grade is P8, the concrete surface is uniform and free of cracks, the tubular pile 5.2 is pre-supported hollow concrete, the tubular pile 5.2 is 60cm in diameter, 40cm in inner diameter and 3m in length, a cross-shaped pile head is welded at the bottom end of the prefabricated tubular pile 5.2, the prefabricated tubular pile 5.2 is convenient to enter the soil, and each foundation comprises 1 bearing platform and 4 pre-supported tubular piles.

The utility model discloses a novel part lies in:

1. the main supporting legs 2 are provided, the original truss structure of the single-tube supporting column is improved, and the stability and reliability of the lattice tower of the wind generating set are enhanced.

2. The steel pipe concrete structure is added into the lattice tower, so that the steel consumption is reduced, and the stability and the safety of the tower are improved.

3. Each supporting leg 2 is large in top and small in bottom, so that the occupied area is reduced while the bearing performance is guaranteed.

4. The prestressed inhaul cable structure is introduced into the lattice tower of the wind generating set with the steel pipe concrete structure, and the material performance is fully utilized.

The utility model discloses the technical effect that the technical feature that relates to in corresponds has:

1. the main supporting leg improves the supporting capacity of a single supporting leg, has an obvious effect on reducing the weight of the whole tower and can improve the stability of the tower;

2. each main supporting leg adopts a form of big top and small bottom, which is beneficial to reducing the occupied area and saving the installation cost of the wind generating set;

3. the steel pipe concrete structure of the prestressed inhaul cable is beneficial to saving the steel consumption, fully utilizing the material characteristics and reducing the manufacturing cost.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The terms "mounted, connected and connected" in the present application are to be understood broadly, unless otherwise explicitly stated or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A lattice tower of a wind generating set at least comprises a main supporting leg and an auxiliary rod piece, and is characterized in that,

the main supporting leg is a three-round-tube lattice column, and three round tubes of the three-round-tube lattice column are not parallel to each other

On the cross section of the main supporting leg, the connecting line of the centers of the cross sections of the three circular tubes is triangular, and the connecting line of the centroids of the two triangles is the central line of the main supporting leg; the two round pipes of the main supporting leg are first round pipes, and the third round pipe of the main supporting leg is a second round pipe;

the basic shape of the lattice tower is a polygonal frustum shape with at least three lateral edges, the center line of the main supporting leg is superposed with the lateral edges of the polygonal frustum, the first type of round tube is positioned on the outer side of the polygonal frustum, and the second type of round tube is positioned on the inner side of the polygonal frustum;

the auxiliary rod piece is arranged between the adjacent main supporting legs and connected with the first type of circular tube through connecting nodes, and lattice column web members are arranged between the two connecting nodes on the same horizontal position on the main supporting legs.

2. A wind park lattice tower as claimed in claim 1,

the basic shape of the main supporting leg is an inverted triangular frustum shape, and the axes of the three circular tubes are superposed with the lateral edges of the inverted triangular frustum.

3. A wind park lattice tower as claimed in claim 1,

each circular tube is formed by splicing a plurality of sections of circular tubes with the same diameter and the same wall thickness, or formed by splicing a plurality of sections of circular tubes with different diameters or different wall thicknesses.

4. A wind park lattice tower as claimed in claim 1,

concrete is arranged inside the first round pipe, and the second round pipe is a common steel pipe; the concrete inside the first circular tube is prefabricated or formed by cast-in-place.

5. A wind park lattice tower as claimed in claim 4,

the main supporting leg is provided with at least one inhaul cable, and two ends of the inhaul cable are respectively positioned at the top end and the bottom end of the main supporting leg; the guy cable is arranged between or inside the concrete steel pipes in the main supporting leg, and the guy cable is provided with prestress.

6. A wind park lattice tower as claimed in claim 1,

the top end of each main supporting leg is connected with an adapter in a tower frame of the wind generating set, and the bottom end of each main supporting leg is connected with a foundation of the wind generating set.

7. A wind park lattice tower as claimed in claim 6,

the top ends of the three round pipes are respectively provided with an independent connecting structure which is used for connecting with the adapter; the bottom ends of the three round pipes are provided with integrated connecting structures, and the integrated connecting structures are used for being connected with the foundation.

8. A wind park lattice tower as claimed in claim 7,

the connecting surface of the independent connecting structure is perpendicular to the axis of the round pipe, and the connecting surface of the integrated connecting structure is perpendicular to the center line of the main supporting leg.

9. A wind park comprising a wind park lattice tower according to any one of claims 1 to 8.