Inhaul cable foundation structure of wind generating set

Abstract

The utility model provides an inhaul cable foundation structure of a wind generating set. The inhaul cable foundation structure comprises a prefabricated special-shaped disc type structure, the zipper is vertically connected with the disc type structure, and the disc type structure is used for fixing the zipper; one end of the zipper is used for being connected with a wind generating set. According to the technical scheme, the disc type structure is prefabricated in a factory, cast-in-place is not needed, and compared with the prior art, under the same burial depth, the disc type structure is stable in pulling resistance and good in anti-overturning stability, and meanwhile construction is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a guy wire foundation structure of a wind turbine generator set. Background Art

[0002] With the rapid development of the wind power generation industry, large wind turbines have been widely used, and small wind turbine generator sets are also booming. Due to the small size of small wind turbine generator sets, there are also many forms of their upper structures, such as self-standing type, self-standing guyed type and other structural forms. Although the bottom load of small wind turbine generator sets is small, their foundation design is very important. It is necessary to not only ensure the stability of the upper structure, but also consider the actual situation encountered in the foundation construction of small wind turbine generator sets. Therefore, it is necessary to meet the design requirements and be convenient for construction.

[0003] The traditional guy wire foundation of a small wind turbine generator set is generally a rectangular or strip-shaped counterweight foundation, and at the same time, the buried depth of the foundation is relatively shallow, and the anti-pull stability and anti-overturning stability of the foundation are poor. Content of the Utility Model

[0004] The utility model mainly provides a guy wire foundation for a small wind turbine generator set to solve the problems of thin overburden soil, low anti-pull stability and low anti-overturning stability of the traditional guy wire foundation of a small wind turbine generator set.

[0005] To solve the above technical problems, the technical solution of the present invention is as follows:

[0006] A guy wire foundation structure of a wind turbine generator set, comprising:

[0007] A prefabricated special-shaped disc structure;

[0008] A guy wire perpendicularly connected to the disc structure, and the disc structure is used to fix the guy wire;

[0009] One end of the guy wire is used to connect to a wind turbine generator set.

[0010] Optionally, the disc structure includes a first part, a second part and a third part connected in sequence;

[0011] The first part and the third part are respectively arranged on both sides of the second part;

[0012] The first part and the third part are symmetrically arranged.

[0013] Optionally, both the first part and the third part are trapezoidal structures;

[0014] The second part is a rectangular structure.

[0015] Optionally, both the first part and the third part are set according to a first specification;

[0016] The second division is arranged according to the second specification.

[0017] Optionally, two through holes are provided in the second division, and the through holes are used to fix the zip fastener.

[0018] Optionally, a first long reinforcing bar is arranged at one end of the disc structure for supporting the structural force.

[0019] Optionally, a second long reinforcing bar is further included;

[0020] The first long reinforcing bar and the second long reinforcing bar are arranged perpendicular to each other.

[0021] Optionally, the first long reinforcing bar and the second long reinforcing bar are connected by wire.

[0022] Optionally, a U-shaped bolt is further included;

[0023] The U-shaped bolt penetrates through the through hole;

[0024] The zip fastener is fixed to one side of the disc structure by the U-shaped bolt.

[0025] Optionally, the second long reinforcing bar is arranged according to the first spacing and the first specification.

[0026] The above solution of the present utility model has at least the following beneficial effects:

[0027] The above solution of the present utility model includes: a prefabricated special-shaped disc structure; a zip fastener vertically connected to the disc structure, and the disc structure is used to fix the zip fastener; one end of the zip fastener is used to connect a wind power generating set. The disc structure of this technical solution is prefabricated in the factory and does not require on-site casting. Compared with the prior art at the same buried depth, its anti-pull stability and anti-overturning stability are good. At the same time, the construction is simple and convenient. Based on the counterweight of the same specification, the cable tray foundation structure can greatly increase the thickness of the overlying soil above. Description of the Drawings

[0028] Figure 1 is the plan view of the cable foundation of the wind power generating set in the embodiment of the present utility model;

[0029] Figure 2 is Figure 1 the first schematic cross-sectional view of A-A in

[0030] Figure 3 is the schematic connection diagram of the cable of the wind power generating set and the foundation in the embodiment of the present utility model;

[0031] Figure 4 is Figure 1 the second schematic cross-sectional view of A-A in

[0032] Figure 5 It is a schematic diagram of the U-bolt of the cable foundation of the wind turbine generator in the embodiment of the present utility model;

[0033] Figure 6 It is a schematic diagram of the first continuous long steel bar in the embodiment of the present utility model;

[0034] Figure 7 It is a schematic diagram of the second continuous long steel bar in the embodiment of the present utility model;

[0035] Figure 8 It is a three-dimensional schematic diagram of the disc structure in the embodiment of the present utility model;

[0036] Explanation of reference numerals:

[0037] 1. Disc structure; 2. Cable; 3. Wind turbine generator; 4. First part; 5. Second part; 6. And third part; 7. Through hole; 8. First continuous long steel bar; 9. Second continuous long steel bar; 10. U-bolt. Detailed implementation manners

[0038] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0039] As Figures 1 to 8 shown, an embodiment of the present utility model provides a cable foundation structure for a wind turbine generator, including:

[0040] A prefabricated special-shaped disc structure 1;

[0041] A cable 2 vertically connected to the disc structure 1, and the disc structure 1 is used to fix the cable 2;

[0042] One end of the cable 2 is used to connect to the wind turbine generator 3.

[0043] In this embodiment, as Figure 4 and Figure 8 shown, a prefabricated special-shaped disc structure 1; the disc structure 1 includes a first part 4, a second part 5 and a third part 6 connected in sequence; the first part 4 and the third part 6 are respectively arranged on both sides of the second part 5; the first part 4 and the third part 6 are symmetrically arranged; both the first part 4 and the third part 6 are trapezoidal structures; the second part 5 is a rectangular structure.

[0044] The prefabricated special-shaped disc structure 1 is the core component of the entire cable 2 basic structure. It is designed and manufactured in a prefabricated manner, facilitating on-site installation and reducing the construction period. The special-shaped design aims to maximize structural strength and stability while optimizing material usage and reducing the overall weight.

[0045] The cable 2 is a key component connecting the disc structure 1 and the wind turbine generator 3. It bears the huge tensile force generated during the operation of the wind turbine generator 3. The cable 2 is perpendicularly connected to the disc structure 1 to ensure the linearity and stability of force transmission.

[0046] The wind turbine generator 3 is installed at one end of the cable 2 and is fixed to the foundation through the cable 2 and the disc structure 1.

[0047] The first division 4 and the third division 6 of the disc structure 1 are both trapezoidal structures. This design not only provides good mechanical stability but also can disperse the force in multiple directions, reducing stress concentration. The hypotenuse of the trapezoidal structure can more effectively resist the horizontal force, such as the lateral force generated by the wind turbine generator 3. The two are symmetrically arranged on both sides of the second division 5, further enhancing the balance and stability of the entire structure.

[0048] The second division 5 is a rectangular structure. As the connecting bridge between the first division 4 and the third division 6, its rectangular design provides a large contact area, which helps to enhance the connection strength with the first and third divisions.

[0049] The disc structure of this technical solution is prefabricated in the factory and does not require on-site pouring, greatly reducing the foundation project volume. Compared with the existing technology at the same buried depth, its anti-pull stability and anti-overturning stability are good, and the construction is simple and convenient at the same time.

[0050] In an optional embodiment of the present utility model, the disc structure 1 includes a first division 4, a second division 5, and a third division 6 connected in sequence;

[0051] The first division 4 and the third division 6 are respectively arranged on both sides of the second division 5;

[0052] The first division 4 and the third division 6 are symmetrically arranged.

[0053] In this embodiment, as a part of the disc structure 1, the first division 4 is located on one side of the second division 5. It undertakes the important task of transmitting the tensile force of the cable 2 to the entire basic structure. Since it is designed as a trapezoidal structure, this shape not only provides sufficient support area but also can effectively disperse and resist external forces in multiple directions, such as the lateral force generated during the operation of the wind turbine generator.

[0054] The second division 5 serves as a bridge connecting the first division 4 and the third division 6. The second division 5 plays a role of connecting the upper and lower parts. It is designed as a rectangular structure, and this design provides a larger contact area, enhancing the connection strength with the first division 4 and the third division 6.

[0055] The third division 6 corresponds to the first division 4. The third division 6 is located on the other side of the second division 5 and is symmetrically arranged with the first division 4. This symmetrical design not only enhances the balance and stability of the entire disc structure but also makes the structure more aesthetically pleasing and harmonious in appearance. Similarly, the third division 6 is also designed as a trapezoidal structure to provide mechanical properties and support capabilities similar to those of the first division 4.

[0056] The first division 4, the second division 5, and the third division 6 are connected in sequence to form a continuous and inseparable whole. This connection method ensures the smooth transmission of forces within the structure.

[0057] The first division 4 and the third division 6 are respectively arranged on both sides of the second division 5. This layout makes the entire disc structure 1 have a larger width and stability in the transverse direction, and at the same time, it is also convenient for connecting and fixing with the zipper 2.

[0058] The symmetrical arrangement of the first division 4 and the third division 6 is an important feature of the disc structure 1. This symmetry not only improves the visual aesthetic of the structure but more importantly enhances the mechanical properties and stability of the structure. During the operation of the wind turbine generator 3, the symmetrical structure design can better resist the influence of various external forces, ensuring the safe and stable operation of the wind turbine generator.

[0059] In an optional embodiment of the present utility model, both the first division 4 and the third division 6 are trapezoidal structures;

[0060] The second division 5 is a rectangular structure.

[0061] In this embodiment, the trapezoidal structure design of the first division 4 and the third division 6. The trapezoidal structure is a geometric shape with stable support and good force dispersion ability; in the disc structure, the first division 4 and the third division 6 are designed as trapezoids. The trapezoidal structure has a larger bottom area in the horizontal direction, which helps to increase the contact area with the foundation or soil and improve the stability of the foundation. At the same time, the hypotenuse of the trapezoid can effectively resist lateral forces, preventing the structure from tilting or shifting under the action of external factors such as wind force.

[0062] During the operation of the wind turbine generator 3, huge tensile forces and overturning moments will be generated. The trapezoidal structure design enables these forces to be more evenly distributed on the foundation structure, reducing the occurrence of stress concentration phenomena, thereby improving the overall strength and durability of the structure.

[0063] The rectangular structure of the second branch 5, being a common geometric shape, has extensive applications in engineering. In the disc structure, the second branch 5 is designed as a rectangle, and the rectangular structure provides a relatively large contact area, which helps to enhance the connection strength between the first branch 4 and the third branch 6. At the same time, the first branch 4, the second branch 5, and the third branch 6 are successively cast with concrete to ensure the smooth transfer of forces within the structure.

[0064] In an alternative embodiment of the present utility model, both the first branch 4 and the third branch 6 are set according to the first specification;

[0065] The second branch 5 is set according to the second specification.

[0066] In this embodiment, as the main load-bearing and stabilizing parts of the disc structure, the first branch 4 and the third branch 6 are designed with the same specification to ensure that they have similar mechanical properties and load-bearing capacities.

[0067] According to factors such as the model, weight, and wind load of the wind turbine generator 3, determine the size parameters such as the bottom width, height, and inclined side angle of the trapezoid to achieve the best load-bearing effect and force distribution.

[0068] As a guy foundation structure applied to a small wind turbine generator, the first branch 4 and the third branch 6 are in the shape of a right trapezoid, with its height set to 250 mm, the bottom side length set to 200 mm, and the top side length set to 100 mm;

[0069] The second branch 5, being a bridge connecting the first branch 4 and the third branch 6, needs to be firmly connected to the first branch 4 and the third branch 6. Therefore, its size and shape may need to match the interfaces of these two branches. The lengths of its two sides can be set to 200 mm and 300 mm respectively, or can be set according to the actual project.

[0070] In an alternative embodiment of the present utility model, two through holes 7 are provided on the second branch 5, and the through holes 7 are used to fix the guy wire 2.

[0071] In this embodiment, the through holes 7 serve as the connection points between the guy wire 2 and the disc structure 1. The guy wire is fixed in the through holes by bolts or other fasteners, thereby realizing the tight connection between the guy wire 2 and the disc structure 1. This connection method can resist the huge tensile force generated by the wind turbine generator and ensure that the guy wire 2 will not loosen or fall off.

[0072] Since the zip fastener 2 bears a huge tensile force in the wind turbine generator 3, multiple fixing points need to be provided on the disc structure 1 to disperse these forces. The two through holes 7 on the second branch 5 are designed for this purpose, and they can evenly transfer the tensile force generated by the zip fastener to each part of the disc structure, thus avoiding local stress concentration and damage.

[0073] The position and size of the through hole 7 can also be adjusted according to needs to adapt to wind turbine generators 3 of different models, specifications and installation positions. This flexibility enables the disc structure to be widely used in various wind power projects. In a specific embodiment, the through hole 7 can be set with a diameter of 38 mm.

[0074] The size of the through hole 7 should be determined according to the diameter of the zip fastener, the type and size of the fastener, and the required connection strength. If the size is too small, it may cause the fastener to be unable to be installed or the connection to be insecure; if the size is too large, it may reduce the connection strength and stability.

[0075] The position of the through hole 7 should be arranged at a suitable position on the second branch 5, preferably in the middle part of the second branch 5. The middle distance between the two through holes 7 is preferably 120 mm to ensure the stable and reliable connection between the zip fastener 2 and the disc structure 1. At the same time, the influence of various forces and torques generated during the operation of the wind turbine generator 3 on the through hole position also needs to be considered to avoid structural damage caused by uneven stress.

[0076] In an optional embodiment of the present utility model, a first through-long steel bar 8 is provided at one end of the disc structure 1 for supporting the structural stress.

[0077] In this embodiment, the first through-long steel bar 8 penetrates through a part or all of the disc structure 1 to form a longitudinal strengthening framework. This framework structure can effectively resist the bending moment and shear force generated by external loads (such as wind load, unit self-weight, etc.), and enhance the supporting ability of the disc structure.

[0078] Since the steel bar has a high tensile strength and stiffness, the setting of the first through-long steel bar 8 can significantly improve the bearing capacity and deformation ability of the disc structure under the stressed state. During the operation of the wind turbine generator 3, when the zip fastener 2 is subjected to a huge tensile force, the first through-long steel bar 8 can share part of the tensile force and prevent the structure from being damaged due to overload.

[0079] The first through-long steel bar 8 tightly connects each part of the disc structure 1, enhancing the integrity of the structure.

[0080] The specifications of the first continuous long steel bar 8 (such as diameter, material, etc.) should be selected according to the specific requirements and force-bearing conditions of the disc structure 1. Generally speaking, the larger the diameter of the steel bar and the better the material, the higher its load-bearing capacity and stiffness. Preferably, the steel bar has a diameter of 8 mm, a length of 840 mm, and is 30 mm away from the structure edge to ensure sufficient steel bar cover thickness.

[0081] The arrangement of the first continuous long steel bar 8 should be reasonable to ensure that it can effectively play its role. Usually, the steel bar should be arranged along the force-bearing direction of the disc structure and form a tight composite structure with other materials such as concrete.

[0082] An optional embodiment of the present utility model further includes a second continuous long steel bar 9;

[0083] The first continuous long steel bar 8 and the second continuous long steel bar 9 are arranged perpendicular to each other.

[0084] In this embodiment, the first continuous long steel bar 8 and the second continuous long steel bar 9 are arranged perpendicular to each other to form a grid-shaped strengthening system. This grid structure can effectively limit the deformation of the structure during the force-bearing process and improve the overall stiffness of the structure. During the operation of the wind turbine 3, when subjected to external loads such as wind loads and the self-weight of the unit, this grid structure can maintain the shape and stability of the structure.

[0085] Since the first continuous long steel bar 8 and the second continuous long steel bar 9 are perpendicular to each other, they can disperse the forces generated by external loads to various parts of the structure. This effect of dispersed force-bearing helps to reduce the occurrence of local stress concentration phenomena and improve the load-bearing capacity and durability of the structure.

[0086] The specifications of the first continuous long steel bar 8 and the second continuous long steel bar 9 should be selected according to the specific requirements and force-bearing conditions of the disc structure 1. Generally speaking, the diameter, material, and quantity of the steel bar need to be accurately calculated and designed to ensure that the structure has sufficient load-bearing capacity and stiffness. The second continuous long steel bar 9 can be a steel bar with a diameter of 6 mm and a length of 415 mm.

[0087] The first continuous long steel bar 8 and the second continuous long steel bar 9 should be perpendicular to each other and evenly arranged at each key part of the disc structure, so as to ensure that an effective grid-shaped strengthening system can be formed during the force-bearing process of the structure and improve the overall performance of the structure.

[0088] An optional embodiment of the present utility model, the first continuous long steel bar 8 and the second continuous long steel bar 9 are connected by iron wire.

[0089] In this embodiment, the wire connection is relatively flexible and can be adjusted according to the actual on-site situation. During the construction of the disc structure 1, if there are deviations in the positions of the first and second continuous steel bars 8 and 9 or fine adjustments are required, using wire connection allows for easier adjustment to ensure the accuracy and stability of the connection.

[0090] The wire connection is simple and fast in construction and does not require complex equipment and processes. At the construction site, workers can quickly use wire to tie two steel bars together, thus accelerating the construction progress.

[0091] The wire connection is usually carried out by binding. During the binding process, it is necessary to ensure that the wire is tightly wound around the two steel bars and forms a firm knot. At the same time, attention should also be paid to the density and uniformity of the binding to ensure the overall strength of the connection.

[0092] An alternative embodiment of the present utility model further includes a U-bolt 10;

[0093] The U-bolt 10 passes through the through-hole 7;

[0094] The zip tie 2 is fixed to one side of the disc structure 1 by the U-bolt.

[0095] In this embodiment, the U-bolt 10 passes through the through-hole 7 in the disc structure 1 and fixes the zip tie 2 to one side of the disc structure 1 through its special shape and fastening method. This fixing method is not only firm and reliable but also convenient for installation and disassembly.

[0096] When the wind turbine 3 is operating, the zip tie 2 will bear a huge tensile force. The U-bolt 10 distributes the tensile force to multiple parts of the disc structure 1 through its structural characteristics, thereby reducing the occurrence of local stress concentration and improving the load-bearing capacity and durability of the structure.

[0097] Since the wind turbine 3 will generate certain vibrations and deformations during operation, the U-bolt 10 has a certain elasticity and adaptability, and can absorb and relieve the influence of these deformations on the structure to a certain extent.

[0098] The specifications of the U-bolt 10 (such as diameter, material, length, etc.) should be determined according to the diameter of the zip tie, the thickness of the disc structure, and the required connection strength. Generally speaking, the larger the diameter of the bolt and the better the material, the higher its load-bearing capacity and safety.

[0099] The fastening method of the U-bolt 10 is also very important. Usually, accessories such as nuts and washers are used to ensure the fastening effect of the bolt. During the fastening process, it is necessary to pay attention to controlling the fastening torque to avoid problems caused by over-tightening or over-loosening.

[0100] The installation position of the U-bolt 10 should be selected according to the design requirements and force conditions of the disc structure. Generally speaking, it should be installed at a position with greater force and relatively stable structure to ensure the reliability and safety of the connection.

[0101] In an alternative embodiment of the present utility model, the second continuous reinforcement 9 is arranged according to the first spacing and the first specification.

[0102] In this embodiment, the first spacing refers to the distance between adjacent two reinforcements of the second continuous reinforcement 9 in the disc structure. The setting of this spacing is comprehensively considered based on various factors such as the force analysis of the structure, design requirements, and construction convenience. A reasonable spacing can ensure that the reinforcements are evenly distributed in the structure, effectively transfer and disperse the forces generated by external loads, thereby improving the overall stability and load-bearing capacity of the structure. In a specific embodiment, the preferred spacing between the second continuous reinforcements 9 is 177.5 mm.

[0103] The first specification refers to the specific parameters such as the diameter and material of the second continuous reinforcement 9. The determination of these parameters also needs to be comprehensively considered based on factors such as the force condition of the structure, design requirements, and economy. Generally, the larger the diameter of the reinforcement, the stronger its load-bearing capacity. In a specific embodiment, the preferred specification of the second continuous reinforcement 9 is a diameter of 6 mm and a length of 415 mm.

[0104] In the design process, first, it is necessary to conduct a force analysis on the disc structure 1 to clarify the force characteristics and requirements of the structure under different working conditions; then, according to the results of the force analysis, determine the first spacing and the first specification of the second continuous reinforcement 9.

[0105] In a specific project, the anti-pulling bearing capacity of the foundation should meet the following requirements:

[0106]

[0107] Among them, T: wire tension (along the wire); ω: the angle between the cable tension and the ground; V t : soil-covered volume; γ s : soil-covered unit weight; K1: stability coefficient; K2: stability coefficient;

[0108] Under the same buried depth, for the traditional counterweight foundation, the anti-pulling stability calculation:

[0109] Buried depth 600, single-layer φ8@200 steel mesh, the volume of the concrete counterweight is 0.136 m 3 ;

[0110] V t = 0.288 M 3 γ s = 16 KN / M 3 Gf = 0.136 x 22 = 2.992 KN

[0111] K1 = 1.7, K2 = 1.4,

[0112]

[0113] The foundation structure of this solution, anti-pulling stability calculation;

[0114] Buried depth 600, concrete disk volume 0.054 m 3 ;

[0115] V t = 0.55 M 3 , γ s = 16 KN / M 3 , G f = 0.054 x 22 = 1.188 KN

[0116] K1 = 1.7, K2 = 1.4, ω = 45°, sin90° = 1

[0117]

[0118] In summary: The anti-pulling bearing capacity of the cable disk foundation result is more than 20% higher than that of the traditional counterweight foundation, and at the same time, the foundation project quantity is reduced by more than 50%.

[0119] The above is the preferred implementation manner of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle described in the present utility model, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope of the present utility model.

Claims

1. A cable foundation structure for a wind turbine generator, characterized in that, Comprising: A prefabricated special-shaped disc structure (1); A zip fastener (2) vertically connected to the disc structure (1), and the disc structure (1) is used to fix the zip fastener (2); One end of the zip fastener (2) is used to connect to a wind turbine generator (3).

2. The cable foundation structure of the wind turbine generator set according to claim 1, characterized in that, The disc structure (1) includes a first section (4), a second section (5), and a third section (6) connected in sequence; The first section (4) and the third section (6) are respectively arranged on both sides of the second section (5); The first section (4) and the third section (6) are symmetrically arranged.

3. The cable foundation structure of a wind turbine generator according to claim 2, wherein, Both the first section (4) and the third section (6) are trapezoidal structures; The second section (5) is a rectangular structure.

4. The cable foundation structure of the wind turbine generator set according to claim 2, wherein, Both the first section (4) and the third section (6) are arranged according to a first specification; The second section (5) is arranged according to a second specification.

5. The cable foundation structure of the wind turbine generator set according to claim 2, characterized in that Two through holes (7) are provided on the second section (5), and the through holes (7) are used to fix the zip fastener (2).

6. The guy foundation structure of the wind turbine generator set according to claim 1, characterized in that, One end of the disc structure (1) is provided with a first long-through reinforcing bar (8) for supporting the structural stress.

7. The cable foundation structure of the wind turbine generator set according to claim 6, characterized in that, It further includes a second long-through reinforcing bar (9); The first long-through reinforcing bar (8) and the second long-through reinforcing bar (9) are arranged perpendicular to each other.

8. The guy foundation structure of the wind turbine generator set according to claim 7, characterized in that, The first long-through reinforcing bar (8) and the second long-through reinforcing bar (9) are connected by wire.

9. The cable foundation structure of the wind turbine according to claim 5, characterized in that, It further includes a U-shaped bolt (10); The U-shaped bolt (10) penetrates through the through hole (7); The zip fastener (2) is fixed to one side of the disc structure (1) by the U-shaped bolt.

10. The cable foundation structure of the wind turbine according to claim 7, characterized in that, The second long-through reinforcing bar (9) is arranged according to a first spacing and a first specification.

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