Semi-assembled foundation structure for a wind turbine generator
Patent Information
- Application Number
- CN202522212415.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-10-20
AI Technical Summary
[0003]本实用新型的主要目的是提出一种风力发电机组的半装配式基础结构，旨在解决现有技术中整体浇筑基础施工周期长，而装配式基础整体承载能力较低的技术问题
[0014]This invention proposes a semi-assembled foundation structure for wind turbine generators. The inner cylinder, outer cylinder, and multiple ribs are assembled together, enabling the foundation structure to quickly form a framework with a certain load-bearing capacity, thus significantly reducing the construction cycle. The inner cylinder, outer cylinder, and multiple ribs together form a casting cavity, which is connected to the cavity of the steel pipe column. When concrete is poured into the casting cavity, the concrete flows into the pipe cavity, and the concrete and steel pipe column together form a steel-concrete composite pile. The concrete in the casting cavity strengthens the connection between the ribs and the inner and outer cylinders, and the concrete and framework together form a load-bearing whole, thus preventing the connection nodes of the framework from becoming weak points and ensuring the overall load-bearing capacity of the foundation structure. The concrete inside the steel pipe column and the concrete in the casting cavity are integrally formed, allowing the steel-concrete composite pile to be firmly connected to the upper part of the foundation structure. The steel-concrete composite pile can penetrate deep into the stable strata below the ground, possessing good load-bearing capacity and providing stable support for the foundation structure above it, thereby ensuring the stable support of the wind turbine generator tower and further improving the overall load-bearing capacity of the foundation structure. During the concrete forming stage, the framework formed by the inner cylinder, outer cylinder, and multiple ribs can also serve as the forming mold for the upper concrete of the foundation structure, and the steel pipe column can also serve as the forming mold for the lower concrete of the foundation structure. This eliminates the need for dedicated concrete molds, reduces construction steps, and saves construction costs.
Smart Images
Figure CN224728992U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wind power generation technology, and in particular to a semi-assembled foundation structure for a wind turbine generator set. Background Technology
[0002] The foundation structure of a wind turbine generator is a crucial component of a wind power generation system. Its main function is to support the wind turbine tower and its superstructure, and to safely transfer the weight and vibration loads of the tower to the ground. Common wind turbine generator foundation structures include monolithic cast-in-place foundations and prefabricated assembled foundations. Monolithic cast-in-place foundations are formed by pouring reinforced concrete in one go. Due to the large volume of the wind turbine generator foundation structure, multiple pours are required, resulting in a long construction period. Prefabricated assembled foundations are assembled from prefabricated components, offering advantages such as fast construction speed and lower requirements for site conditions. However, the connection nodes between prefabricated components can easily become weak points in the structure, leading to a lower overall load-bearing capacity of the foundation. Utility Model Content
[0003] The main purpose of this utility model is to propose a semi-assembled foundation structure for wind turbine generator sets, which aims to solve the technical problems of long construction cycle of integral cast-in-place foundations and low overall load-bearing capacity of prefabricated foundations in the existing technology.
[0004] To achieve the above objectives, the present invention proposes a semi-assembled foundation structure for a wind turbine generator set, comprising a base plate, an inner cylinder, an outer cylinder, and multiple ribs. The inner cylinder is disposed on the base plate and extends vertically, forming an installation cavity inside for mounting the tower of the wind turbine generator set. The outer cylinder is disposed on the base plate and extends vertically, surrounding the side of the inner cylinder away from the installation cavity. Multiple ribs are distributed circumferentially around the inner cylinder, each rib connecting the inner cylinder and the outer cylinder. The inner cylinder, the outer cylinder, and any two adjacent ribs together form a casting cavity. The base plate has through holes corresponding to each casting cavity, and a steel pipe column is disposed corresponding to each through hole. The steel pipe column extends vertically, with its upper end passing through the corresponding through hole and its lower end inserted below the ground. A cavity is formed inside the steel pipe column, and each cavity communicates with the corresponding casting cavity.
[0005] In one embodiment, a partition is connected between any two adjacent ribs. The partition is spaced apart from both the inner cylinder and the outer cylinder. The partition divides the casting cavity into a first sub-casting cavity and a second sub-casting cavity. The bottom plate has two through holes corresponding to the first sub-casting cavity and the second sub-casting cavity, and each through hole is provided with a steel pipe column.
[0006] In one embodiment, the rib plate protrudes into the two casting cavities located on both sides of it to form two mounting protrusions, and both ends of the partition plate are provided with mounting grooves that are inserted and engaged with the mounting protrusions.
[0007] In one embodiment, each of the mounting protrusions protrudes in a direction perpendicular to the side surface of the rib, and the end face of the partition is set at an angle to the side surface of the rib.
[0008] In one embodiment, each of the partitions extends vertically and is at the same height as the outer cylinder.
[0009] In one embodiment, the inner cylinder is formed by sequentially splicing multiple inner splicing plates along the circumferential direction, and the outer cylinder is formed by sequentially splicing multiple outer splicing plates along the circumferential direction. The number of inner splicing plates and outer splicing plates are the same and they are arranged in a one-to-one correspondence. Each inner splicing plate is connected to the corresponding outer splicing plate by a rib.
[0010] In one embodiment, the inner side of the inner splicing plate is a curved surface that fits against the wall of the tower, the outer side of the inner splicing plate is a plane, the inner side of the outer splicing plate is a plane, and the inner side of each outer splicing plate and the outer side of the corresponding inner splicing plate are parallel to each other.
[0011] In one embodiment, the heights of the multiple inner splicing panels are the same, the heights of the multiple outer splicing panels are the same, and the height of the inner splicing panels is greater than the height of the outer splicing panels. The top surface of the rib is inclined downward from the inside to the outside.
[0012] In one embodiment, the inner splicing plate, the outer splicing plate, and the rib plate are all prefabricated panels.
[0013] In one embodiment, a flange is connected to the top of the inner cylinder.
[0014] This invention proposes a semi-assembled foundation structure for wind turbine generators. The inner cylinder, outer cylinder, and multiple ribs are assembled together, enabling the foundation structure to quickly form a framework with a certain load-bearing capacity, thus significantly reducing the construction cycle. The inner cylinder, outer cylinder, and multiple ribs together form a casting cavity, which is connected to the cavity of the steel pipe column. When concrete is poured into the casting cavity, the concrete flows into the pipe cavity, and the concrete and steel pipe column together form a steel-concrete composite pile. The concrete in the casting cavity strengthens the connection between the ribs and the inner and outer cylinders, and the concrete and framework together form a load-bearing whole, thus preventing the connection nodes of the framework from becoming weak points and ensuring the overall load-bearing capacity of the foundation structure. The concrete inside the steel pipe column and the concrete in the casting cavity are integrally formed, allowing the steel-concrete composite pile to be firmly connected to the upper part of the foundation structure. The steel-concrete composite pile can penetrate deep into the stable strata below the ground, possessing good load-bearing capacity and providing stable support for the foundation structure above it, thereby ensuring the stable support of the wind turbine generator tower and further improving the overall load-bearing capacity of the foundation structure. During the concrete forming stage, the framework formed by the inner cylinder, outer cylinder, and multiple ribs can also serve as the forming mold for the upper concrete of the foundation structure, and the steel pipe column can also serve as the forming mold for the lower concrete of the foundation structure. This eliminates the need for dedicated concrete molds, reduces construction steps, and saves construction costs. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0016] Figure 1 A schematic diagram of an embodiment of the semi-assembled foundation structure for a wind turbine generator set provided by this utility model; Figure 2 A partial structural schematic diagram of an embodiment of the semi-assembled foundation structure of the wind turbine generator set provided by this utility model; Figure 3 A partial top view of an embodiment of the semi-assembled foundation structure of the wind turbine generator set provided by this utility model; Figure 4 A partial side view of an embodiment of the semi-assembled foundation structure of the wind turbine generator provided by this utility model.
[0017] Explanation of icon numbers: 10. Inner cylinder; 11. Inner splicing plate; 12. Mounting cavity; 13. Flange; 20. Outer cylinder; 21. Outer splicing plate; 22. Casting cavity; 221. First sub-casting cavity; 222. Second sub-casting cavity; 30. Rib plate; 301. Mounting protrusion; 31. Partition plate; 311. Mounting groove; 40. Base plate; 41. Through hole; 50. Steel pipe column.
[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0022] In this utility model, the descriptions of directions such as "up" and "down" are as follows: Figure 4 The directions shown are for reference only and are used to interpret the location. Figure 4 The relative positional relationship between the components in the shown posture is such that if the specific posture changes, the directional indication will also change accordingly.
[0023] Common wind turbine foundation structures include monolithic cast-in-place foundations and precast assembled foundations. Monolithic cast-in-place foundations are formed by pouring reinforced concrete in one go. Due to the large volume of wind turbine foundation structures, the foundation structure needs to be poured in multiple intervals, resulting in a long construction period. Precast assembled foundations are assembled from precast components, which has the advantages of fast construction speed and low requirements for site conditions. However, the connection nodes between precast components can easily become weak points in the structure, leading to a decrease in the overall load-bearing capacity of the foundation structure.
[0024] This utility model proposes a semi-assembled foundation structure for a wind turbine generator set, including a base plate 40, an inner cylinder 10, an outer cylinder 20, and multiple ribs 30. The inner cylinder 10 is disposed on the base plate 40 and extends vertically, with an installation cavity 12 formed inside the inner cylinder 10 for mounting the tower of the wind turbine generator set. The outer cylinder 20 is disposed on the base plate 40 and extends vertically, surrounding the side of the inner cylinder 10 away from the installation cavity 12. Multiple ribs 30 are distributed circumferentially around the inner cylinder 10. 0 connects the inner cylinder 10 and the outer cylinder 20. The inner cylinder 10, the outer cylinder 20 and any two adjacent ribs 30 together form a casting cavity 22. The bottom plate 40 has through holes 41 corresponding to each casting cavity 22. A steel pipe column 50 is set in each through hole 41. The steel pipe column 50 extends vertically. The upper end of the steel pipe column 50 passes through the corresponding through hole 41, and the lower end of the steel pipe column 50 is inserted below the ground. A cavity is formed inside the steel pipe column 50. Each cavity is interconnected with the corresponding casting cavity 22.
[0025] Please see Figure 1The inner cylinder 10, outer cylinder 20, and multiple ribs 30 are all supported on the base plate 40. The inner cylinder 10 encloses and forms the mounting cavity 12 for installing the wind turbine generator. Multiple ribs 30 are spaced apart between the inner cylinder 10 and the outer cylinder 20, with each end of the rib 30 supported by the inner cylinder 10 and the outer cylinder 20 respectively. The multiple ribs 30 divide the space between the inner cylinder 10 and the outer cylinder 20 into multiple pouring cavities 22 for pouring concrete. Through holes 41 are provided on the base plate 40 corresponding to the positions of each pouring cavity 22. Steel pipe columns 50 pass through the through holes 41 and extend downward, so that the pipe cavity is connected to the pouring cavity 22 through the through holes 41. The top of the steel pipe column 50 does not protrude from the top surface of the base plate 40, so that the concrete in the pouring cavity 22 can flow into the pipe cavity. During the construction of the semi-prefabricated foundation structure, the inner cylinder 10, outer cylinder 20, and multiple ribs 30 are first assembled to form the skeleton of the foundation structure. Then, concrete is poured into each pouring cavity 22. The concrete in each pouring cavity 22 flows through the through hole 41 into the cavity of the corresponding steel pipe column 50. The concrete and the steel pipe column 50 together form a steel-concrete composite pile, and the concrete inside the steel pipe column 50 and the concrete in the pouring cavity 22 are integrally formed, ensuring a tight connection between the steel-concrete composite pile and the foundation structure, forming a semi-prefabricated foundation structure with integrated load-bearing capacity. It can be noted that the base slab 40 can be cast in place. Before pouring the base slab 40, each steel pipe column 50 is driven into the ground, with its top extending above the ground. During the pouring of the base slab 40, the tops of the steel pipe columns 50 are temporarily sealed to prevent concrete from flowing into the steel pipe columns 50. The thickness of the base slab 40 is not less than the length of the steel pipe columns 50 extending above the ground.
[0026] The semi-assembled foundation structure for wind turbine generators proposed in this utility model consists of an inner cylinder 10, an outer cylinder 20, and multiple ribs 30 assembled together. This allows the foundation structure to quickly form a framework with a certain load-bearing capacity, significantly reducing the construction period. The inner cylinder 10, outer cylinder 20, and multiple ribs 30 together enclose a casting cavity 22, which is connected to the cavity of the steel pipe column 50. When concrete is poured into the casting cavity 22, the concrete in the casting cavity 22 flows into the cavity, and the concrete and the steel pipe column 50 together form a steel-concrete composite pile. The concrete in the casting cavity 22 strengthens the connection between the ribs 30 and the inner cylinder 10 and outer cylinder 20. The concrete and the framework together form a load-bearing whole, thus preventing the connection nodes of the framework from becoming weak points and ensuring the overall load-bearing capacity of the foundation structure. The concrete inside the steel pipe column 50 is integrally formed with the concrete in the pouring cavity 22, ensuring a tight connection between the steel pipe concrete pile and the upper part of the foundation structure. The steel pipe concrete pile can penetrate deep into stable strata below the ground, possessing excellent load-bearing capacity and providing stable support for the foundation structure above it. This ensures the foundation structure's stable support for the wind turbine tower, further improving the overall load-bearing capacity of the foundation structure. During the concrete forming stage, the framework formed by the inner cylinder 10, outer cylinder 20, and multiple ribs 30 can also serve as the forming mold for the upper concrete of the foundation structure, and the steel pipe column 50 can also serve as the forming mold for the lower concrete of the foundation structure. This eliminates the need for dedicated concrete molds, reducing construction steps and saving construction costs.
[0027] In one embodiment, a partition 31 is connected between any two adjacent ribs 30. The partition 31 is spaced apart from the inner cylinder 10 and the outer cylinder 20. The partition 31 divides the casting cavity 22 in which it is located into a first sub-casting cavity 221 and a second sub-casting cavity 222. The bottom plate 40 has two through holes 41 corresponding to the first sub-casting cavity 221 and the second sub-casting cavity 222, and each through hole 41 is provided with a steel pipe column 50.
[0028] Please continue reading. Figure 1The two ends of the partition 31 are respectively connected to two adjacent ribs 30, and the partition 31 is spaced apart from both the inner cylinder 10 and the outer cylinder 20, so that the partition 31 is located near the middle of the two ribs 30, thereby dividing the casting cavity 22 into a first sub-casting cavity 221 and a second sub-casting cavity 222. The first sub-casting cavity 221 is closer to the inner cylinder 10, and the second sub-casting cavity 222 is closer to the outer cylinder 20. Since the volume of the foundation structure is large, the volume of the casting cavity 22 is also large. Dividing the large-volume casting cavity 22 into the first sub-casting cavity 221 and the second sub-casting cavity 222, and pouring concrete in them separately, can avoid uneven shrinkage caused by excessive concrete volume, thereby ensuring the molding quality of the concrete. Each first sub-casting cavity 221 and each second sub-casting cavity 222 are connected to a steel pipe column 50. The multiple steel pipe columns 50 are independent of each other, so that each steel pipe column 50 can provide independent support for the concrete in its corresponding first sub-casting cavity 221 or the first sub-casting cavity 221, avoiding the failure of a single steel pipe column 50 from affecting the stability of the entire foundation structure.
[0029] In one embodiment, the rib 30 protrudes into two casting cavities 22 located on both sides to form two mounting protrusions 301, and both ends of the partition 31 are provided with mounting grooves 311 that are inserted and engaged with the mounting protrusions 301.
[0030] Please see Figure 2 Each rib 30 has two partitions 31 connected to its two sides. Each partition 31 has two adjacent ribs 30 connected to its two ends. Two mounting protrusions 301 are provided on each side of the rib 30 facing the two adjacent casting cavities 22. Two mounting grooves 311 are provided at each end of the partitions 31. The ribs 30 and partitions 31 are detachably connected by the insertion and engagement of the mounting protrusions 301 and the mounting grooves 311. This facilitates the installation of the partitions 31 after the ribs 30 are assembled, effectively improving the construction speed of the foundation structure. By engaging the two mounting protrusions 301 with the mounting grooves 311 on the two partitions 31, multiple annularly spaced ribs 30 are connected by multiple partitions 31 to form a whole. The partitions 31 provide lateral support to the ribs 30, effectively improving the stability of the foundation structure.
[0031] In one embodiment, each mounting protrusion 301 protrudes in a direction perpendicular to the side of the rib 30, and the end face of the partition 31 is set at an angle to the side of the rib 30.
[0032] Please see Figure 3The protruding direction of the mounting protrusion 301 is perpendicular to the rib 30, facilitating the forming of the mounting protrusion 301 on the rib 30. The end face of the partition 31 abuts against the side of the rib 30 at an angle, and the recessed direction of the mounting groove 311 is set at an angle relative to the extending direction of the partition 31, so that the recessed direction of the mounting groove 311 matches the protruding direction of the mounting protrusion 301, achieving a stable connection between the partition 31 and the rib 30. The force direction between the mounting protrusion 301 and the mounting groove 311 is set at an angle to the connection direction between the rib 30 and the partition 31, preventing the partition 31 from detaching due to lateral compression by the rib 30, thus improving the connection stability between the partition 31 and the rib 30.
[0033] In one embodiment, each partition 31 extends vertically and is at the same height as the outer cylinder 20.
[0034] It can be explained that the height of the partition 31 is the same as the height of the outer cylinder 20. There is a second sub-pouring cavity 222 between the partition 31 and the outer cylinder 20. When pouring concrete into the second sub-pouring cavity 222, the top surface of the concrete is made to be flush with the top of the partition 31 and the outer cylinder 20. The lateral force of the partition 31 can be transferred to the outer cylinder 20 through the concrete in the second sub-cavity. The force between the partition 31 and the outer cylinder 20 is uniform, thereby improving the integrity and lateral force capacity of the foundation structure.
[0035] In one embodiment, the inner cylinder 10 is formed by splicing multiple inner splicing plates 11 sequentially along the circumferential direction, and the outer cylinder 20 is formed by splicing multiple outer splicing plates 21 sequentially along the circumferential direction. The number of inner splicing plates 11 and outer splicing plates 21 are the same and they are arranged in a one-to-one correspondence. A rib 30 is connected between each inner splicing plate 11 and the corresponding outer splicing plate 21.
[0036] Understandably, multiple inner splicing plates 11 are sequentially spliced end to end to form an annular inner cylinder 10, and the multiple inner splicing plates 11 together enclose an installation cavity 12; multiple outer splicing plates 21 are sequentially spliced end to end to form an annular outer cylinder 20, each outer splicing plate 21 surrounding the corresponding inner splicing plate 11, and ribs 30 are spliced between corresponding inner splicing plates 11 and outer splicing plates 21. The multiple inner splicing plates 11, multiple outer splicing plates 21, and multiple ribs 30 can be quickly assembled on site through modular splicing, effectively improving the construction speed of the foundation structure.
[0037] In one embodiment, the inner side of the inner splicing plate 11 is a curved surface that fits against the wall of the tower, the outer side of the inner splicing plate 11 is a flat surface, the inner side of the outer splicing plate 21 is a flat surface, and the inner side of each outer splicing plate 21 and the outer side of its corresponding inner splicing plate 11 are parallel to each other.
[0038] Furthermore, multiple inner splicing plates 11 are mutually enclosed to form an installation cavity 12 for installing the wind turbine tower. The inner surface of each inner splicing plate 11 is curved with the same curvature as the tower wall, ensuring that the inner surface of the inner cylinder 10 is tightly fitted to the tower wall, thus providing stable support for the tower. The outer surface of each inner splicing plate 11 and the inner surface of the corresponding outer splicing plate 21 are parallel to each other. Ribs 30 are connected between the outer surface of the inner splicing plate 11 and the inner surface of the corresponding outer splicing plate 21, with the extension direction of the ribs 30 perpendicular to the outer surface of the inner splicing plate 11 and also perpendicular to the inner surface of the outer splicing plate 21. This ensures that the connecting surfaces of the ribs 30 and the inner and outer splicing plates 11 and 21 are tightly abutted, allowing for smooth stress transfer between the ribs 30 and the inner and outer splicing plates 11 and 21, significantly improving the connection stiffness and overall stability between the foundation structure and the tower. It can be explained that the inner edge of the cross-section of the inner cylinder 10 is circular, the outer edge of the cross-section of the inner cylinder 10 is a regular polygon, the cross-section of the outer cylinder 20 is a regular polygon, and the number of sides of the outer cylinder 20 cross-section is the same as that of the inner cylinder 10 cross-section.
[0039] In one embodiment, the heights of the multiple inner splicing plates 11 are the same, the heights of the multiple outer splicing plates 21 are the same, and the height of the inner splicing plates 11 is greater than the height of the outer splicing plates 21. The top surface of the rib plate 30 is inclined downward from the inside to the outside.
[0040] Please see Figure 4 The height of the inner cylinder 10 is greater than that of the outer cylinder 20, providing a larger contact area between the inner cylinder 10 and the tower, thus improving the support effect of the inner cylinder 10 on the tower. From the inner cylinder 10 to the outer cylinder 20, the stress transmitted to the tower gradually decreases, and the height of the outer cylinder 20 decreases accordingly, maximizing the utilization of material properties. The top surface of the rib plate 30 is inclined downward from the inner splicing plate 11 to the outer splicing plate 21. At the connection between the rib plate 30 and the inner splicing plate 11, the top surface of the rib plate 30 is flush with the top of the inner splicing plate 11. At the connection between the rib plate 30 and the outer splicing plate 21, the top surface of the rib plate 30 is flush with the top of the outer splicing plate 21. This allows the rib plate 30 to smoothly transfer the force of the inner cylinder 10 to the outer cylinder 20, effectively optimizing the stress transmission path within the foundation structure.
[0041] In one embodiment, the inner splicing plate 11, the outer splicing plate 21, and the rib plate 30 are all prefabricated panels.
[0042] Understandably, the inner splicing panel 11, outer splicing panel 21, and rib plate 30 are prefabricated in the factory, requiring only assembly on-site according to a pre-set sequence. This significantly reduces on-site workload and is unaffected by weather conditions, greatly improving construction accuracy and efficiency. The prefabricated panels are produced under strict factory control, ensuring consistent forming quality and load-bearing capacity among components, thereby guaranteeing uniform stress distribution within the foundation structure.
[0043] In one embodiment, a flange 13 is connected to the top of the inner cylinder 10.
[0044] It can be noted that the upper surface of flange 13 is provided with evenly distributed flange bolt holes for bolt connection with the corresponding flange at the bottom of the wind turbine tower. When the tower is installed, its bottom flange is tightly connected to flange 13 by a high-strength bolt group, so that the tower load is evenly transferred to the top of the inner cylinder 10 through flange 13.
[0045] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.
Claims
1. A semi-assembled foundation structure for a wind turbine generator set, characterized in that, include: Base plate; The inner cylinder is disposed on the base plate and extends vertically, and the interior of the inner cylinder forms an installation cavity for mounting the tower of the wind turbine generator set; An outer cylinder is disposed on the base plate and extends vertically, and the outer cylinder surrounds the inner cylinder on the side opposite to the mounting cavity; Multiple ribs are distributed circumferentially around the inner cylinder, and each rib connects the inner cylinder and the outer cylinder. The inner cylinder, the outer cylinder, and any two adjacent ribs together enclose a casting cavity. The bottom plate has through holes corresponding to each casting cavity, and a steel pipe column is provided for each through hole. The steel pipe column extends vertically, with its upper end passing through the corresponding through hole and its lower end inserted below the ground. A cavity is formed inside the steel pipe column, and each cavity is interconnected with the corresponding casting cavity.
2. The semi-assembled foundation structure of the wind turbine generator set as described in claim 1, characterized in that, A partition is connected between any two adjacent ribs. The partition is spaced apart from both the inner cylinder and the outer cylinder. The partition divides the casting cavity into a first sub-casting cavity and a second sub-casting cavity. The bottom plate has two through holes corresponding to the first sub-casting cavity and the second sub-casting cavity, and each through hole is provided with a steel pipe column.
3. The semi-assembled foundation structure of the wind turbine generator set as described in claim 2, characterized in that, The ribs protrude into the two casting cavities on both sides to form two mounting protrusions, and each end of the partition is provided with a mounting groove that engages with the mounting protrusion.
4. The semi-assembled foundation structure of the wind turbine generator set as described in claim 3, characterized in that, Each of the mounting protrusions protrudes in a direction perpendicular to the side of the rib, and the end face of the partition is set at an angle to the side of the rib.
5. The semi-assembled foundation structure of the wind turbine generator set as described in claim 2, characterized in that, Each of the partitions extends vertically, and the partitions are at the same height as the outer cylinder.
6. The semi-assembled foundation structure of the wind turbine generator set as described in any one of claims 1 to 5, characterized in that, The inner cylinder is formed by splicing multiple inner splicing plates together sequentially along the circumference, and the outer cylinder is formed by splicing multiple outer splicing plates together sequentially along the circumference. The number of inner splicing plates and outer splicing plates are the same and they are arranged in a one-to-one correspondence. Each inner splicing plate is connected to the corresponding outer splicing plate by a rib plate.
7. The semi-assembled foundation structure of the wind turbine generator set as described in claim 6, characterized in that, The inner side of the inner splicing plate is a curved surface that fits against the wall of the tower. The outer side of the inner splicing plate is flat, and the inner side of the outer splicing plate is flat. The inner side of each outer splicing plate and the outer side of its corresponding inner splicing plate are parallel to each other.
8. The semi-assembled foundation structure of the wind turbine generator set as described in claim 6, characterized in that, Multiple inner splicing panels have the same height, multiple outer splicing panels have the same height, and the height of the inner splicing panels is greater than the height of the outer splicing panels. The top surface of the rib plate is inclined downward from the inside to the outside.
9. The semi-assembled foundation structure of the wind turbine generator set as described in claim 6, characterized in that, The inner splicing plate, the outer splicing plate, and the rib plate are all prefabricated panels.
10. The semi-assembled foundation structure of the wind turbine generator set as described in any one of claims 1 to 5, characterized in that, A flange is connected to the top of the inner cylinder.