Multi-unit inhaul cable self-balancing wind power supporting structure system

Abstract

The utility model provides a multi-unit inhaul cable self-balancing wind power supporting structure system which is used for solving the problems that an existing supporting structure can only be provided with a single wind generating set, efficiency is low, and the supporting structure is large in occupied area and overturning moment. Comprising two or more inclined tower columns, the multiple inclined tower columns intersect at the same rigid joint, and fixed wind turbine generators are installed at the top ends of the multiple inclined tower columns; a plurality of parallel transverse inhaul cables are connected between every two adjacent inclined tower columns, the transverse inhaul cables are sequentially arranged from bottom to top in the vertical direction, and rotary yaw wind facing assemblies are further arranged at the bottoms of the inclined tower columns. By means of the inclined tower columns, the inclined supporting legs and the inhaul cables which are arranged in the crossed mode, installation of the multiple draught fan units is achieved, meanwhile, the occupied area is reduced, the capacity of the wind driven generator is effectively improved, and therefore the draught fan manufacturing cost of the unit generating capacity is reduced, and the obvious economical advantage is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power, in particular to a cable self-balancing wind power supporting structure system for multiple units. Background Art

[0002] Due to its beautiful appearance, small space occupation and high support height, the independent tower structure has been widely used in large wind turbines. Traditional independent towers generally use cylindrical or conical steel towers, which are composed of multiple sections connected by flanges.

[0003] However, with the development trend of large-scale wind turbines, the height and diameter of the tower are increasing. For existing independent wind turbine towers, the horizontal displacement (i.e., stiffness index) at the center of the wind turbine hub at the top of the tower is proportional to the cube of the tower. Therefore, in order to make the tower meet the stiffness and strength indicators, the cost of the tower increases exponentially with the height of the tower.

[0004] At the same time, the production, transportation and installation costs of large-diameter towers are high. The towers are processed and manufactured in workshops, which requires large-scale manufacturing equipment, and each segment needs a large-diameter flange connection, which increases the production cost; the transportation is more difficult due to restrictions on road load or turning radius, bridges and tunnels, etc.; large-diameter towers are heavy, and large-tonnage cranes are required for installation, which increases the installation cost. Due to the limitations of existing manufacturing equipment, roads and crane capacity, there are many problems in the manufacture, transportation and installation of large towers that need to be solved urgently.

[0005] In addition, large-diameter towers require large foundation supports. Wind loads form a huge overturning moment at the bottom of the tower, so a large and solid reinforced concrete foundation is needed to resist this effect. However, the traditional independent foundation has sufficient compressive strength but insufficient anti-overturning ability. In order to meet the large overturning moment requirements of the wind turbine foundation, it is necessary to increase the plane size of the foundation and set strong prestressed anchors. The efficiency of the foundation structure tends to decrease, resulting in a large waste of design resources. In addition, the construction of the foundation is a large-volume reinforced concrete construction, which has a long construction period, high difficulty, poor stability, and difficult to guarantee construction quality. Utility Model Content

[0006] The purpose of the utility model is to provide a cable self-balancing wind power support structure system with multiple units, which is used to solve the problems that the existing support structure can only be equipped with a single generator set, the power generation is low, and the support structure occupies a large area and has a large overturning moment.

[0007] A cable self-balancing wind power support structure system for multiple units, characterized in that it comprises two or more inclined towers, the bottoms of several inclined towers intersect at the same rigid node, and the tops of several inclined towers are all equipped with fixed wind turbines;

[0008] A plurality of mutually parallel transverse cables are connected between adjacent inclined tower columns, and the plurality of transverse cables are arranged in sequence from bottom to top along the vertical direction. A rotating yaw wind-facing component is also arranged at the bottom of the inclined tower column.

[0009] Optionally, it further comprises oblique supporting legs arranged obliquely, the number of the oblique supporting legs being greater than or equal to three;

[0010] The top end of the inclined support leg is connected to the bottom ends of several inclined tower columns, the axis of the inclined support leg intersects with the axis of several inclined tower columns at the rigid node, and the bottom ends of adjacent inclined support legs are connected by tie rods.

[0011] Optionally, assume that the number of inclined tower columns is M, and the number of inclined legs is N, wherein the axes of the M inclined legs coincide with the axes of the M inclined tower columns respectively, and N is greater than or equal to M.

[0012] Optionally, a plurality of lateral cables are connected between the bottom ends of the inclined legs and the inclined tower column;

[0013] One ends of the plurality of lateral cables are connected to the bottom ends of the oblique legs, and the other ends of the plurality of lateral cables are connected to the inclined tower columns in sequence from bottom to top.

[0014] Optionally, the number of the inclined tower columns is three groups, and lateral cables are connected between the bottom ends of the inclined legs and the inclined tower columns on both sides thereof.

[0015] Optionally, the number of the inclined tower columns is two groups, and the inclined tower columns further include inclined struts, one end of each of the inclined struts is connected to the bottom of the inclined tower column, and the axes of the inclined struts intersect at the rigid node.

[0016] Optionally, a plurality of rear upward cables are connected between the other end of the oblique support rod and the inclined tower column, and a plurality of rear downward cables are connected between the other end of the oblique support rod and the oblique supporting leg;

[0017] One ends of the plurality of rear upward cables and the plurality of rear downward cables are connected to the other end of the oblique support rod, the plurality of rear upward cables are sequentially connected to the upper part of the inclined tower column from bottom to top along the axial direction of the inclined tower column, and the other ends of the plurality of rear downward cables are respectively connected to the plurality of oblique legs.

[0018] Optionally, the side where the impeller of the wind turbine is located is defined as the front side of the inclined tower column, and lateral cables are connected between the bottom end of the inclined support leg located on the front side and the inclined tower columns on both sides thereof;

[0019] A plurality of lateral cables are connected between the bottom end of the rear oblique support leg and the inclined tower column above the rear oblique support leg.

[0020] Optionally, the yaw-to-wind assembly includes an annular track beam and a plurality of sliders slidably arranged on the annular track beam, and the tower seat is mounted on the sliders via a movable bracket.

[0021] Optionally, the yaw wind-facing assembly includes a base cylinder, a gear ring sleeved on the outer wall of the base cylinder, and a collar rotatably sleeved on the base cylinder;

[0022] A plurality of connecting plates are installed on the outer wall of the collar, and the plurality of connecting plates are rotatably arranged in sequence along the axis of the base cylinder. The other ends of the plurality of connecting plates are connected to a tower base mounting plate, and a gear is rotatably installed on the lower end surface of the tower base mounting plate. The plurality of gears are engaged with the gear ring, and the tower seat is mounted on the tower base mounting plate through a movable bracket.

[0023] Due to the adoption of the above technical solution, the utility model has the following advantages:

[0024] 1. This application realizes the installation of multiple wind turbine units while reducing the floor space through cross-arranged inclined towers, inclined legs and a number of cables, effectively increasing the capacity of wind turbines, thereby reducing the cost of wind turbines per unit of power generation, and has obvious economic advantages.

[0025] 2. The present application sets lateral cables and transverse cables on both sides of the tower frame, so that the absolute value of the bending moment of the tower frame is greatly reduced or even 0, which is beneficial to greatly reduce the steel consumption of the tower frame and effectively reduce the construction cost of the tower frame.

[0026] 3. In order to avoid blades sweeping the tower, conventional wind power generation has a certain cone angle and elevation angle. The cone angle and elevation angle of the wind rotor have an important impact on the performance and working stability of the wind turbine. This application can effectively avoid interference between the blades and the tower through the inclined tower frame design, improve the angle size of the wind rotor cone angle and elevation angle, and improve the power generation efficiency.

[0027] 4. This application can make the foundation only subject to pressure or extremely small tension by adjusting the center of gravity or adjusting the cable tension, thereby greatly reducing the amount of steel and concrete used in the foundation and reducing the construction cost; and the lightweight tower column and foundation are conducive to transportation and installation, and do not require super-large lifting equipment, reducing construction costs.

[0028] 5. This application uses vibration reduction treatment such as installing cable shock absorbers or tower TMD dampers to effectively prevent large-scale vibration of the tower and avoid fatigue damage.

[0029] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings of the present utility model are described as follows.

[0031] Figure 1 This is a schematic diagram of the structure of the wind power support structure system in Example 1 of the utility model.

[0032] Figure 2 This is a schematic diagram of the structure of the wind power support structure system in Example 2 of the utility model.

[0033] Figure 3 It is a structural schematic diagram of the guide rail type yaw wind facing component of the utility model.

[0034] Figure 4 It is a structural schematic diagram of the gear-type yaw wind-facing component of the utility model.

[0035] In the figure: 1- inclined tower column; 2- wind turbine; 3- transverse cable; 4- oblique support leg; 5- rigid node; 6- lateral cable; 7- oblique support rod; 8- rear upward cable; 9- rear downward cable; 10- annular track beam; 11- slider; 12- tower base; 13- movable bracket; 14- foundation cylinder; 15- gear ring; 16- collar; 17- connecting plate; 18- tower base mounting plate; 19- gear; 20- pull rod. DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0037] Embodiment 1:

[0038] like Figure 1 A cable self-balancing wind power support structure system for two units is shown, characterized in that it comprises two or more inclined towers 1, the bottoms of several inclined towers 1 intersect at the same rigid node 5, and the tops of several inclined towers 1 are all equipped with fixed wind turbines 2;

[0039] A plurality of mutually parallel transverse cables 3 are connected between adjacent inclined tower columns 1. The plurality of transverse cables 3 are arranged in sequence from bottom to top along the vertical direction. A rotating yaw wind-facing component is also arranged at the bottom of the inclined tower column 1.

[0040] like Figure 1As shown, it also includes oblique supporting legs 4 arranged obliquely, and the number of the oblique supporting legs 4 is greater than or equal to three;

[0041] The top end of the inclined leg 4 is connected to the bottom ends of several inclined tower columns 1 , the axis of the inclined leg 4 intersects with the axis of several inclined tower columns 1 at the rigid node 5 , and the bottom ends of adjacent inclined legs 4 are connected by tie rods 20 .

[0042] In this embodiment, the number of the inclined tower columns 1 and wind turbines 2 is two groups, and the number of the inclined legs 4 is three groups. As one embodiment of the present application, the axes of the two inclined legs 4 are respectively arranged to coincide with two of the inclined tower columns 1. As another embodiment of the present application, the axes of the inclined legs 4 are not arranged to coincide with the inclined tower columns 1.

[0043] In this embodiment, by cross-arranged inclined tower columns 1, inclined legs 4 and cables, the installation of two wind turbine units is achieved while reducing the floor space, effectively increasing the capacity of the wind turbine, thereby reducing the cost of the wind turbine per unit of power generation, and having obvious economic advantages.

[0044] like Figure 1 As shown, the side where the impeller of the wind turbine is located is defined as the front side of the inclined tower column 1, and lateral cables 6 are connected between the bottom end of the inclined support leg 4 located on the front side and the inclined tower columns 1 on both sides thereof, and a plurality of lateral cables 6 are connected between the bottom end of the inclined support leg 4 located on the rear side and the inclined tower column 1 above it, one end of the plurality of lateral cables 6 is connected to the bottom end of the inclined support leg 4, and the other ends of the plurality of lateral cables 6 are connected to the inclined tower column 1 in sequence from bottom to top.

[0045] like Figure 1 As shown, it also includes an inclined diagonal brace 7 , one end of which is connected to the bottom of the inclined tower column 1 , and the axes of the diagonal brace 7 intersect at the rigid node 5 .

[0046] like Figure 1 As shown, a plurality of rear upward cables 8 are connected between the other end of the oblique support rod 7 and the inclined tower column 1, and a plurality of rear downward cables 9 are connected between the other end of the oblique support rod 7 and the oblique support leg 4;

[0047] One ends of the plurality of rear upward cables 8 and the plurality of rear downward cables 9 are connected to the other end of the oblique support rod 7, the plurality of rear upward cables 8 are sequentially connected to the upper part of the inclined tower column 1 from bottom to top along the axial direction of the inclined tower column 1, and the other ends of the plurality of rear downward cables 9 are respectively connected to the plurality of oblique legs 4.

[0048] In this embodiment, there are four groups of lateral cables 6, two of which have one end connected to the bottom end of the oblique support leg 4 located on the front side, and the other ends of the two groups of lateral cables 6 are respectively connected to two inclined tower columns 1 from bottom to top; the other two groups of lateral cables 6 have one end connected to the bottom end of the other two oblique support legs 4, and the other ends of the two groups of lateral cables are respectively connected to the inclined tower columns 1 above them from bottom to top.

[0049] In this embodiment, the lateral cables 6, the rear upward cables 8 and the rear downward cables 9 are all pre-tensioned cables, and vibration dampers are installed at both ends of the cables.

[0050] In this embodiment, by installing a cable damper or a tower TMD damper, the tower is effectively prevented from vibrating greatly and fatigue damage is avoided. A self-balancing support system is formed by setting lateral cables 6 and transverse cables 3, rear upward cables 8 and rear downward cables 9 to reduce the stress on the foundation. The number of tower cable nodes is adjusted according to the length of the inclined tower column 1 to ensure the reasonable stress on the tower column segment, and the absolute value of the bending moment of the inclined tower column 1 is very small or even zero through pre-adjustment optimization.

[0051] As an embodiment of the present application, Figure 3 As shown, the yaw wind-facing assembly includes an annular track beam 10 and a plurality of sliders 11 slidably arranged on the annular track beam 10 , and a tower seat 12 is installed on the sliders 11 through a movable bracket 13 .

[0052] In this embodiment, the yaw wind component is set to achieve different angles of deflection according to the wind direction, thereby improving the conversion efficiency of wind power generation. When the wind direction changes, the slider 11 moves along the annular track beam 10, thereby driving the self-balancing wind power support structure to rotate.

[0053] As another embodiment of the present application, Figure 4 As shown, the yaw wind assembly includes a base cylinder 14, a gear ring 15 sleeved on the outer wall of the base cylinder 14, and a collar 16 rotatably sleeved on the base cylinder 14;

[0054] A plurality of connecting plates 17 are installed on the outer wall of the collar 16, and the plurality of connecting plates 17 are rotatably arranged in sequence along the axis of the base cylinder 14. The other ends of the plurality of connecting plates 17 are connected to a tower base mounting plate 18, and a gear 19 is rotatably installed on the lower end surface of the tower base mounting plate 18. The plurality of gears 19 are engaged with the gear ring 15, and the tower base 12 is installed on the tower base mounting plate 18 through a movable bracket 13.

[0055] In this embodiment, when the wind direction changes, the collar 16 rotates around the base cylinder 14 , and at the same time, under the meshing and guiding action of the gear ring 15 and the gear 19 , the self-balancing wind power support structure is driven to rotate stably.

[0056] Embodiment 2:

[0057] like Figure 2 The structure shown includes two or more inclined tower columns 1, the bottoms of several inclined tower columns 1 are crossed and connected to each other, the axes of several inclined tower columns 1 intersect at the same rigid node 5, and the tops of several inclined tower columns 1 are all installed with fixed wind turbines 2;

[0058] A plurality of mutually parallel transverse cables 3 are connected between adjacent inclined tower columns 1. The plurality of transverse cables 3 are arranged in sequence from bottom to top along the vertical direction. A rotating yaw wind-facing component is also arranged at the bottom of the inclined tower column 1.

[0059] like Figure 2 As shown, it also includes oblique supporting legs 4 arranged obliquely, and the number of the oblique supporting legs 4 is greater than or equal to three;

[0060] The top end of the inclined leg 4 is connected to the bottom ends of several inclined tower columns 1 , the axis of the inclined leg 4 intersects with the axis of several inclined tower columns 1 at the rigid node 5 , and the bottom ends of adjacent inclined legs 4 are connected by tie rods 20 .

[0061] In this embodiment, the number of the inclined tower column 1, the wind turbine 2 and the inclined legs 4 are all three groups. As one embodiment of the present application, the axes of the three inclined legs 4 are respectively arranged to coincide with the three inclined tower columns 1. As another embodiment of the present application, the axes of the inclined legs 4 are not arranged to coincide with the inclined tower column 1.

[0062] In this embodiment, the installation of three wind turbine units is achieved through the cross-arranged inclined tower columns 1, inclined legs 4 and cables, while reducing the floor space and effectively increasing the capacity of the wind turbine, thereby reducing the cost of the wind turbine per unit of power generation, which has obvious economic advantages.

[0063] like Figure 2 As shown, lateral cables 6 are connected between the bottom ends of the inclined legs 4 and the inclined tower columns 1 on both sides thereof.

[0064] In this embodiment, there are three groups of lateral cables 6, each group includes four lateral cables 6, two of which are connected to the inclined tower column 1 on one side of the inclined leg 4, and the other two are connected to the inclined tower column 1 on the other side of the inclined leg 4.

[0065] In this embodiment, the lateral cable 6 is a pre-tensioned cable; and both ends of the lateral cable 6 are equipped with vibration dampers.

[0066] In this embodiment, by installing a cable damper or a tower TMD damper, the tower is effectively prevented from vibrating greatly and fatigue damage is avoided. A self-balancing support system is formed by setting the lateral cables 6 and the transverse cables 3 to reduce the stress on the foundation. The number of tower cable nodes is adjusted according to the length of the inclined tower column 1 to ensure the reasonable stress on the tower column segment, and the absolute value of the bending moment of the inclined tower column 1 is very small or even zero through pre-adjustment optimization.

[0067] As an embodiment of the present application, Figure 3 As shown, the yaw wind-facing assembly includes an annular track beam 10 and a plurality of sliders 11 slidably arranged on the annular track beam 10 , and a tower seat 12 is installed on the sliders 11 through a movable bracket 13 .

[0068] In this embodiment, the yaw wind component is set to achieve different angles of deflection according to the wind direction, thereby improving the conversion efficiency of wind power generation. When the wind direction changes, the slider 11 moves along the annular track beam 10, thereby driving the self-balancing wind power support structure to rotate.

[0069] As another embodiment of the present application, Figure 4 As shown, the yaw wind assembly includes a base cylinder 14, a gear ring 15 sleeved on the outer wall of the base cylinder 14, and a collar 16 rotatably sleeved on the base cylinder 14;

[0070] A plurality of connecting plates 17 are installed on the outer wall of the collar 16, and the plurality of connecting plates 17 are rotatably arranged in sequence along the axis of the base cylinder 14. The other ends of the plurality of connecting plates 17 are connected to a tower base mounting plate 18, and a gear 19 is rotatably installed on the lower end surface of the tower base mounting plate 18. The plurality of gears 19 are engaged with the gear ring 15, and the tower base 12 is installed on the tower base mounting plate 18 through a movable bracket 13.

[0071] In this embodiment, when the wind direction changes, the collar 16 rotates around the base cylinder 14 , and at the same time, under the meshing and guiding action of the gear ring 15 and the gear 19 , the self-balancing wind power support structure is driven to rotate stably.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A cable self-balancing wind power support structure system for multiple units, characterized in that: It comprises two or more inclined tower columns (1), wherein the bottoms of several inclined tower columns (1) intersect at the same rigid node (5), and the tops of several inclined tower columns (1) are all equipped with fixed wind turbine sets (2); A plurality of mutually parallel transverse cables (3) are connected between adjacent inclined tower columns (1), and the plurality of transverse cables (3) are arranged in sequence from bottom to top along the vertical direction. A rotating yaw wind-facing component is also arranged at the bottom of the inclined tower column (1).

2. A cable self-balancing wind power support structure system for multiple units according to claim 1, characterized in that: It also includes inclined supporting legs (4) arranged obliquely, wherein the number of the inclined supporting legs (4) is greater than or equal to three; The top end of the inclined support leg (4) is connected to the bottom ends of the plurality of inclined tower columns (1), the axis of the inclined support leg (4) and the axis of the plurality of inclined tower columns (1) intersect at the rigid node (5), and the bottom ends of adjacent inclined support legs (4) are connected via a tie rod (20).

3. A cable self-balancing wind power support structure system for multiple units according to claim 2, characterized in that: Assume that the number of inclined tower columns (1) is M, and the number of inclined legs (4) is N, wherein the axes of the M inclined legs (4) coincide with the axes of the M inclined tower columns (1), respectively, and N is greater than or equal to M.

4. A cable self-balancing wind power support structure system for multiple units according to claim 3, characterized in that: A plurality of lateral cables (6) are connected between the bottom ends of the inclined legs (4) and the inclined tower column (1); One end of each of the lateral cables (6) is connected to the bottom end of the inclined leg (4), and the other ends of each of the lateral cables (6) are sequentially connected to the inclined tower column (1) from bottom to top.

5. A cable self-balancing wind power support structure system for multiple units according to claim 4, characterized in that: The number of the inclined tower columns (1) is three groups, and lateral cables (6) are connected between the bottom ends of the inclined legs (4) and the inclined tower columns (1) on both sides thereof.

6. A cable self-balancing wind power support structure system for multiple units according to claim 5, characterized in that: The inclined tower column (1) is provided in two groups and further comprises inclined braces (7) arranged obliquely, one end of the inclined brace (7) being connected to the bottom of the inclined tower column (1), and the axes of the inclined braces (7) intersecting at the rigid node (5).

7. A cable self-balancing wind power support structure system for multiple units according to claim 6, characterized in that: A plurality of rear upward cables (8) are connected between the other end of the oblique support rod (7) and the inclined tower column (1), and a plurality of rear downward cables (9) are connected between the other end of the oblique support rod (7) and the oblique support leg (4); One end of each of the plurality of rear upward cables (8) and the plurality of rear downward cables (9) is connected to the other end of the oblique support rod (7); the plurality of rear upward cables (8) are sequentially connected to the upper portion of the inclined tower column (1) from bottom to top along the axis of the inclined tower column (1); and the other ends of the plurality of rear downward cables (9) are respectively connected to the plurality of oblique legs (4).

8. The cable self-balancing wind power support structure system of multiple units according to claim 7, characterized in that: The side where the impeller of the wind turbine is located is defined as the front side of the inclined tower column (1), and lateral cables (6) are connected between the bottom ends of the inclined legs (4) located on the front side and the inclined tower columns (1) on both sides thereof; A plurality of lateral cables (6) are connected between the bottom end of the rear oblique support leg (4) and the inclined tower column (1) above the rear oblique support leg (4).

9. The cable self-balancing wind power support structure system of multiple units according to claim 1, characterized in that: The yaw wind-facing assembly comprises an annular track beam (10) and a plurality of sliders (11) slidably arranged on the annular track beam (10); a tower seat (12) is mounted on the sliders (11) via a movable bracket (13).

10. The cable self-balancing wind power support structure system of multiple units according to claim 1, characterized in that: The yaw wind-facing assembly comprises a base cylinder (14), a gear ring (15) sleeved on the outer wall of the base cylinder (14), and a collar (16) rotatably sleeved on the base cylinder (14); A plurality of connecting plates (17) are mounted on the outer wall of the collar (16), and the plurality of connecting plates (17) are rotatably arranged in sequence along the axis of the base cylinder (14). The other ends of the plurality of connecting plates (17) are connected to a tower base mounting plate (18). A gear (19) is rotatably mounted on the lower end surface of the tower base mounting plate (18), and the plurality of gears (19) are meshed with the gear ring (15). The tower base (12) is mounted on the tower base mounting plate (18) via a movable bracket (13).

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