Wind turbine fixing structure

Abstract

The utility model discloses a wind turbine fixing structure which comprises a foundation ring support placed in a foundation pit formed in the ground. The bottom of the foundation ring is connected with the top of the foundation ring support, and the top of the foundation ring extends to the position above the ground and is connected with the tower drum. The reinforcement cage sleeves the outer ends of the foundation ring bracket and the foundation ring and is poured with concrete; a plurality of connecting steel bars are arranged on the foundation ring support and the foundation ring in a penetrating mode, and the connecting steel bars and the steel bar cage are bundled. The fixing mechanism can be used for fixing the tower drum of the wind turbine, so that the stability of the wind turbine when bearing large wind power at the high position is effectively guaranteed, and the situation that the bottom of the tower drum shakes when bearing wind power in different directions for a long time, and then subsequent toppling is caused is avoided.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine installation technology, specifically a wind turbine fixing structure. Background Technology

[0002] With the increasing global demand for clean energy, wind energy, as a clean, pollution-free, and renewable energy source, is receiving increasing attention for its development and utilization. Wind power generation converts the kinetic energy of wind into electrical energy through wind turbine generators, playing a crucial role in reducing carbon emissions. As an important component of wind turbine generators, the wind turbine tower not only bears the heavy responsibility of supporting the unit but also needs to absorb the vibrations generated during operation to ensure that the wind turbine generator can efficiently utilize wind energy.

[0003] Currently, wind turbine towers are generally installed on a foundation fixing mechanism using bolts and nuts. The common fixing mechanism mainly consists of a supporting cylinder and concrete poured outside the supporting cylinder. The specific operation involves vertically placing the supporting cylinder in the foundation, then pouring concrete and backfilling with loose soil to level the ground, and finally securing the wind turbine tower to the supporting cylinder with bolts and nuts. However, during actual wind turbine operation, the wind turbine tower needs to withstand wind forces from different directions, coupled with the continuous absorption of vibrations generated by the turbine. These factors can easily cause gaps to appear between the fixing mechanism and the external concrete. Once these gaps appear, they can cause the wind turbine tower to sway, affecting not only the stability and efficiency of wind power generation, but also, in severe cases, endangering the safe operation of the entire wind power facility, leading to equipment damage, increased maintenance costs, and other adverse consequences. Utility Model Content

[0004] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a wind turbine fixing structure. This fixing structure uses a steel cage set outside the foundation ring support and the foundation ring to pour concrete inside and outside the steel cage, thereby improving the tensile strength of the concrete. At the same time, the connecting steel bars set through the foundation ring support and the foundation ring can be tied to the external steel cage, making the connecting steel bars and the concrete an integral whole, thereby effectively preventing the wind turbine tower from swaying and improving stability.

[0005] This utility model is implemented by providing a wind turbine fixing structure, including a foundation ring support, which is placed in a foundation pit opened on the ground;

[0006] The base ring is connected at the bottom to the top of the base ring support, and extends to the ground and is connected to the tower.

[0007] The reinforcing cage is fitted onto the foundation ring support and the outer end of the foundation ring, and then concrete is poured into it.

[0008] Several connecting steel bars are installed through the foundation ring support and the foundation ring, and the connecting steel bars are tied to the steel cage.

[0009] Preferably, the foundation pit is paved with a layer of crushed stone and a drainage ditch is provided. The outer end of the foundation ring support is provided with an embedded part inserted into the crushed stone layer. A concrete pad layer is poured on the outside of the foundation ring support.

[0010] Preferably, the thickness of the crushed stone layer is 15-20cm.

[0011] Preferably, a backfill layer is provided above the crushed stone layer, and the highest point of the backfill layer is flush with the ground.

[0012] Preferably, a pipeline is provided in the foundation ring. One end of the pipeline is pre-embedded in the backfill layer and connected to the external equipment. The other end is set in the foundation ring and extends into the tower to connect with the wind turbine above.

[0013] Preferably, the foundation ring support and the foundation ring are connected by a flange, and several connecting steel bars are inserted through the foundation ring support and the foundation ring at the part where they are inserted into the foundation pit. The steel cage is a cylindrical structure that is sleeved on the outside of the foundation ring support and the foundation ring and tied to the connecting steel bars. Concrete is poured inside and outside the steel cage.

[0014] Preferably, a tension ring is provided on the outer side of the end of the base ring extending above the ground, and the tension ring is connected to a tensioning steel bar pre-installed on the ground.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This fixed structure utilizes a reinforcing cage installed outside the foundation ring support and foundation ring. During concrete pouring inside and outside the cage, the reinforcing cage effectively restrains and strengthens the concrete. When the concrete is subjected to tensile force, the reinforcing cage effectively distributes the load, significantly improving the tensile strength of the concrete. Simultaneously, connecting reinforcing bars are threaded through the foundation ring support and foundation ring and can be tied to the external reinforcing cage. This connection method ensures a tight bond between the connecting reinforcing bars and the concrete. In actual operation, when the wind turbine tower is subjected to various complex loads and tends to sway, the connecting reinforcing bars can evenly distribute the load from the tower into the surrounding concrete. Through the coordinated work of the concrete and the reinforcing cage, they jointly resist the load, greatly improving the connection strength and overall integrity between the foundation ring and the concrete.

[0017] Because the reinforcing cage enhances the tensile strength of the concrete, and the connecting steel bars strengthen the overall connection stability, the two work together to make the entire foundation structure more stable in supporting the wind turbine tower. When the tower sways due to wind force, the foundation structure can effectively suppress the sway amplitude of the tower thanks to its good tensile and shear resistance and stable connections. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute any limitation on the present invention. In the drawings:

[0019] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the basic ring support and the basic ring of this utility model;

[0021] In the diagram: 1. Ground; 2. Foundation pit; 3. Crushed stone layer; 4. Embedded parts; 5. Concrete cushion layer; 6. Foundation ring support; 7. Foundation ring; 8. Reinforcing cage; 9. Pipeline; 10. Tower; 11. Tensioning ring; 12. Connecting reinforcing bars. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this utility model and are not intended to limit this utility model in any way. The accompanying drawings in this utility model are only for illustrative purposes and to facilitate understanding of the embodiments and are not intended to limit this utility model in any way.

[0023] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0024] As described in the background section, existing wind turbine tower fixing structures typically consist of a supporting cylinder and concrete poured outside the supporting cylinder. When the tower is subjected to wind forces from different wind directions for extended periods and to absorb vibrations from the turbine, gaps can easily form between the supporting cylinder and the concrete, causing the tower to sway and compromising its stability.

[0025] Based on the above reasons, in order to solve the above problems, this utility model provides the following technical solution:

[0026] Example 1,

[0027] Please see the appendix Figure 1 and attached Figure 2 A type of wind turbine mounting structure.

[0028] Includes a foundation ring support 6, which is placed in the foundation pit 2 opened on the ground 1;

[0029] The base ring 7 is connected at the bottom to the top of the base ring support 6, and extends to the ground 1 and is connected to the tower 10 at the top.

[0030] The reinforcing cage 8 is fitted onto the outer ends of the foundation ring support 6 and the foundation ring 7 and then concrete is poured.

[0031] Several connecting steel bars 12 are installed through the foundation ring support 6 and the foundation ring 7, and the connecting steel bars 12 are tied to the steel cage 8.

[0032] In this embodiment, a layer of crushed stone 3 is laid in the foundation pit 2 of the ground 1 and a drainage ditch is opened. An embedded part 4 is provided at the outer end of the foundation ring support 6 and inserted into the crushed stone layer 3. A concrete pad layer 5 is poured on the outside of the foundation ring support 6.

[0033] In this embodiment, the thickness of the gravel layer 3 is 15-20cm.

[0034] In this embodiment, a backfill layer is provided above the crushed stone layer 3, and the highest point of the backfill layer is flush with the ground surface 1.

[0035] Setting a gravel layer can increase the bearing capacity of the foundation and accelerate the drainage of water from the foundation soil. At the same time, the gravel layer can protect the underlying foundation soil.

[0036] During installation, a foundation pit 2 is first excavated at a suitable location on the ground 1. After reaching a suitable depth, the foundation ring support 6 and the embedded parts 4 are placed in the foundation pit 2, and a layer of crushed stone 3 and a concrete cushion 5 are laid. After the concrete is poured and solidified, the foundation ring 7 and the foundation ring support 6 are connected by flanges and leveled. A reinforcing cage 8 is then installed on the outside. The connecting reinforcing bars 12 are then passed through the pre-set through holes in the reinforcing cage 8, the foundation ring support 6, and the foundation ring 7. The two ends of the connecting reinforcing bars 12 are tied to the reinforcing cage 8. Finally, a formwork is set on the outside of the reinforcing cage to pour concrete. After the concrete solidifies, the formwork is removed and a backfill layer is filled into the foundation pit. Finally, the tower 10 can be installed above the foundation ring 7.

[0037] Example 2,

[0038] Based on Embodiment 1, in order to ensure that the electricity generated by the wind turbine is transmitted to external equipment, a pipeline 9 is provided in the foundation ring 7. One end of the pipeline 9 is pre-embedded in the backfill layer 2 and connected to the external equipment, while the other end is set in the foundation ring 7 and extends into the tower 10 to connect with the wind turbine above.

[0039] Example 3,

[0040] Please see the appendix Figure 2 Based on Example 1, in order to improve the connection strength between the foundation ring support and the foundation ring and the externally poured concrete and avoid gaps, the foundation ring support 6 and the foundation ring 7 are connected by flanges. Several connecting steel bars 12 are inserted through the parts of the foundation ring support 6 and the foundation ring 7 into the foundation pit 2. The steel cage 8 is a cylindrical structure that is sleeved on the outside of the foundation ring support 6 and the foundation ring 7 and tied with the connecting steel bars 12. Concrete is poured inside and outside the steel cage 8.

[0041] Example 4,

[0042] Based on Embodiment 1, in order to further improve the stability of the fixed structure, a tension ring 11 is provided on the outer side of the end of the base ring 7 that extends above the ground 1. The tension ring 11 is connected to the tensioning steel bars preset on the ground. The tensioning steel bars evenly distributed on the outer end of the base ring can improve the supporting force of the base ring and prevent it from tilting to one side.

[0043] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A wind turbine fixing structure, characterized in that: include, The foundation ring support is placed in the foundation pit opened on the ground; The base ring is connected at the bottom to the top of the base ring support, and extends to the ground and is connected to the tower. The reinforcing cage is fitted onto the foundation ring support and the outer end of the foundation ring, and then concrete is poured into it. Several connecting steel bars are installed through the foundation ring support and the foundation ring, and the connecting steel bars are tied to the steel cage.

2. The wind turbine fixing structure according to claim 1, characterized in that: The foundation pit is filled with a layer of crushed stone and a drainage ditch is dug. The outer end of the foundation ring support is equipped with a pre-embedded part inserted into the crushed stone layer. A concrete pad layer is poured on the outside of the foundation ring support.

3. The wind turbine fixing structure according to claim 2, characterized in that: The thickness of the gravel layer is 15-20cm.

4. The wind turbine fixing structure according to claim 2, characterized in that: A backfill layer is provided above the crushed stone layer, and the highest point of the backfill layer is flush with the ground.

5. The wind turbine fixing structure according to claim 4, characterized in that: The foundation ring is equipped with a pipeline. One end of the pipeline is pre-embedded in the backfill layer and connected to the external equipment. The other end is set in the foundation ring and extends into the tower to connect with the wind turbine above.

6. The wind turbine fixing structure according to claim 1, characterized in that: The foundation ring support and the foundation ring are connected by flanges. Several connecting steel bars are inserted through the foundation ring support and the foundation ring at the part where they are inserted into the foundation pit. The steel cage is a cylindrical structure that is fitted outside the foundation ring support and the foundation ring and tied to the connecting steel bars. Concrete is poured inside and outside the steel cage.

7. The wind turbine fixing structure according to claim 1, characterized in that: A tension ring is provided on the outer side of the end of the base ring that extends above the ground, and the tension ring is connected to a tensioning steel bar pre-installed on the ground.

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