A mountain wind turbine foundation structure

Abstract

The utility model relates to the technical field of foundation installation of wind turbine generator sets, and specifically to a mountain wind turbine foundation structure, which is convenient for installing wind turbines in foundation pits in mountains, including a central column, multiple groups of support parts, multiple groups of embedded plates and sealing rings, the central column is fixedly arranged in the middle of the foundation pit, multiple groups of embedded plates and multiple groups of support parts are arranged in an array along the circumferential direction on the outside of the central column with the central column as the center, the support parts and the embedded plates are staggered, that is, each group of embedded plates is located between two groups of support parts adjacent to it, the embedded plates are inserted in the lower part of the central column, the support parts are plugged in and fastened with screws, and a sealing ring is inserted in the upper part of the central column, the lower surface of the sealing ring is in contact with the upper surface of the embedded plate and is fixedly connected to the support parts. In the utility model, the support parts and embedded plates are sequentially spliced ​​to form the entire wind turbine foundation, avoiding the occurrence of problems such as cracking of the entire wind turbine foundation due to terrain factors, and reducing safety hazards.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation installation of a wind power generator set, in particular to a foundation structure of a mountain wind power generator fan. Background Art

[0002] Wind power is a pollution-free, renewable, clean energy. Wind farms have high power generation, stable wind turbine operation, and mature manufacturing technology. They have been widely used in recent years. Due to the rich wind resources in mountainous environments, some wind turbines are installed in mountainous environments. Generally, the foundation of mountain wind power generation is a large-diameter independent foundation, which requires excavation of foundation pits on the mountain and then on-site pouring. However, the mountainous environment makes it inconvenient to transport the materials and equipment of the wind power generation foundation structure, and the construction is difficult, the construction period is long, and the project cost is high.

[0003] Although the current prefabricated wind power generation foundation structure can reduce the difficulty of construction and shorten the construction period, the existing prefabricated wind power generation foundation first arranges prefabricated beam and slab units along the circumferential direction, and the two adjacent prefabricated beam and slab units are connected by joint grouting operations, and the ends of the prefabricated beam and slab units in the circumferential direction are bundled by prestressed steel cables to provide annular prestress. If this structure is used, the prestressed steel cables are not easy to operate when they are bundled along the circumferential direction, and it is not easy to ensure the annular prestress in the middle part of the prefabricated beam and slab units. In addition, the mountain environment is relatively harsh and the geology is relatively complex. The joint grouting is easily affected by the mountain environment and the geological influence, resulting in cracking and failure, thereby affecting the stability of the entire power generation wind turbine foundation structure. Utility Model Content

[0004] The main purpose of the utility model is to provide a mountain wind power generator fan foundation structure, which can effectively solve the above problems.

[0005] The utility model provides the following technical solution: a mountain wind turbine foundation structure, which is convenient for installing the wind turbine in a foundation pit in the mountain, comprising a central column, multiple groups of support parts, multiple embedded plates and a sealing ring, wherein the central column is fixedly arranged in the middle of the foundation pit, multiple embedded plates and multiple groups of support parts are arranged in an array along the circumferential direction on the outside of the central column, the support parts and the embedded plates are staggered, each of the embedded plates is located between two adjacent groups of support parts, the embedded plates are plugged into the lower part of the central column, the support parts are plugged into the embedded plates and are fixedly connected by screws, a sealing ring is sleeved on the outer side of the upper part of the central column, the lower surface of the sealing ring abuts against the upper surface of the embedded plate and is fixedly connected to the support part, and multiple ribs are fixedly arranged on the inner side of the support part along the circumferential direction.

[0006] Furthermore, the support portion includes an inner steel plate and an outer steel plate, both of which are fan-shaped. One end of the inner steel plate abuts against the outer wall of the central column, and the other end is plugged and fixedly connected to the outer steel plate through a positioning block.

[0007] Furthermore, an inner fixing plate is fixedly arranged in the middle of the inner steel plate, and a plurality of inner ribs are fixedly arranged on both sides of the inner fixing plate; an outer fixing plate is fixedly arranged in the middle of the outer steel plate, and a plurality of outer ribs are fixedly arranged on both sides of the outer fixing plate; the ends of the inner ribs and the outer ribs are both in contact with the side walls of the embedded plate.

[0008] Furthermore, a plurality of positioning strips are symmetrically arranged on both sides of the embedded plate, and a plurality of corresponding slots are symmetrically opened on both sides of the lower part of the inner steel plate and the outer steel plate, and the slots on the inner steel plate and the outer steel plate are respectively plugged into and fixedly connected with the corresponding positioning strips.

[0009] Furthermore, the lower part of the embedded plate is inserted into the ground of the foundation pit, and a plurality of grooves are spaced apart along the circumferential direction on the outer wall of the central column. A convex plate is fixedly provided at one end of the embedded plate close to the central column, and the convex plate is inserted into and fixedly connected with the lower part of the groove.

[0010] Furthermore, a plurality of through holes are spaced apart at one end of the embedded plate away from the convex plate, anchor rods are passed through the through holes, and the lower ends of the anchor rods are inserted into the ground of the foundation pit.

[0011] Furthermore, the lower surfaces of the inner steel plate and the outer steel plate are in contact with the ground of the foundation pit.

[0012] Furthermore, a plurality of reinforcement strips are arranged at intervals along the circumferential direction on the inner wall of the sealing ring, and the reinforcement strips are plugged into and fixedly connected to the upper portion of the groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, the support part and the embedded plate are sequentially spliced ​​to form the entire fan foundation. The inner steel plate and the outer steel plate are plugged into the embedded plate and then fastened with screws. There is no need to grout the joints, thus avoiding the problem of cracking of the entire fan foundation due to terrain factors and reducing safety hazards.

[0015] 2. In the utility model, the inner steel plate and the outer steel plate, the support part and the embedded plate all adopt a splicing structure, which is convenient for transportation, and ribs are arranged on both sides of the inner steel plate and the outer steel plate along the circumferential direction, so that the whole fan foundation is evenly stressed, avoiding the use of a structure with circumferential prestressed steel cables bundled, which is easy to operate, and the arranged ribs can also increase the strength of the splicing seam, which is not easy to be damaged.

[0016] 3. In the utility model, the groove on the outer wall of the center column plays a positioning role for the embedded plate. After the installation is completed, the sealing ring is inserted into the upper part of the center column to strengthen the strength of the center column. By welding the connection between the sealing ring and the inner steel plate, the stability of the entire fan foundation is further enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the inner steel plate structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the outer steel plate structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the connection structure between the central column, the sealing ring and the embedded plate of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the embedded plate of the utility model.

[0024] 1. Center column; 11. Groove; 12. First fixing hole; 13. Second fixing hole; 2. Support part; 21. Inner steel plate; 211. Inner fixing plate; 212. Inner rib plate; 213. First slot; 214. Second slot; 215. Positioning block; 22. Outer steel plate; 221. Outer fixing plate; 222. Outer rib plate; 223. Third slot; 224. Fourth slot; 225. Positioning groove; 3. Embedded plate; 31. Protruding plate; 311. First positioning hole; 32. Through hole; 33. Positioning strip; 331. First insert strip; 332. Second insert strip; 333. Third insert strip; 334. Fourth insert strip; 4. Sealing ring; 41. Reinforcement strip; 42. Second positioning hole; 5. Anchor rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Specific implementation examples Figure 1-6As shown: a mountain wind turbine foundation structure, which is convenient for installing the wind turbine in a foundation pit in the mountain, including a central column 1, multiple groups of support parts 2, multiple embedded plates 3 and a sealing ring 4, the central column 1 is fixedly arranged in the middle of the foundation pit, multiple embedded plates 3 and multiple groups of support parts 2 are arranged in an array along the circumferential direction on the outside of the central column 1, the support parts 2 and the embedded plates 3 are staggered, that is, each embedded plate 3 is located between two adjacent groups of support parts 2, and multiple groups of support parts 2 and multiple embedded plates 3 are spliced ​​in sequence to form a truncated cone shape, the embedded plate 3 is plugged into the lower part of the central column 1, the support part 2 is plugged into the embedded plate 3 and fixedly connected, a sealing ring 4 is sleeved on the outer side of the upper part of the central column 1, the lower surface of the sealing ring 4 abuts against the upper surface of the embedded plate 3 and is fixedly connected to the support part 2, and a plurality of ribs are fixedly arranged on the inner side of the support part 2 along the circumferential direction.

[0027] Furthermore, the support portion 2 includes an inner steel plate 21 and an outer steel plate 22 both of which are fan-shaped. One end of the inner steel plate 21 abuts against the outer wall of the central column 1, and the other end is plugged and fixedly connected to the outer steel plate 22 through a positioning block 215.

[0028] Furthermore, an inner fixing plate 211 is fixedly arranged in the middle of the inner steel plate 21, and a plurality of inner ribs 212 are fixedly arranged on both sides of the inner fixing plate 211, and the inner ribs 212 are perpendicular to the inner fixing plate 211; an outer fixing plate 221 is fixedly arranged in the middle of the outer steel plate 22, and a plurality of outer ribs 222 are fixedly arranged on both sides of the outer fixing plate 221, and the outer ribs 222 are perpendicular to the outer fixing plate 221; the ends of the inner ribs 212 and the outer ribs 222 are both in contact with the side walls of the embedded plate 3; the inner steel plate 21 and the outer steel plate 22, the support part 2 and the embedded plate 3 all adopt a splicing structure for convenient transportation; and ribs are circumferentially arranged on both sides of the inner steel plate 21 and the outer steel plate 22, so that the entire fan foundation is evenly stressed, avoiding the use of a structure in which prestressed steel cables are bundled in the circumferential direction, and the operation is convenient; and the arranged ribs can also increase the strength of the splicing seam, which is not easily damaged.

[0029] Furthermore, the cross section of the embedded plate 3 is roughly a right-angled trapezoid. In the present embodiment, the embedded plate 3 and the central column 1 are both cast by concrete. Positioning strips 33 are symmetrically arranged on both sides of the embedded plate 3. The positioning strips 33 are sequentially arranged from the inside to the outside along the radius direction of the central column 1, namely, the first insertion strip 331, the second insertion strip 332, the third insertion strip 333 and the fourth insertion strip 334. The lengths of the first insertion strip 331, the second insertion strip 332, the third insertion strip 333 and the fourth insertion strip 334 also decrease in sequence. The first slot 213 and the second slot 214 are symmetrically arranged on both sides of the lower part of the inner steel plate 21. The first slot 213 is located on the side of the second slot 214 close to the central column 1. The first slot 213 is plugged into the first insertion strip 331, the second slot 214 is plugged into the second insertion strip 332, and the first insertion strip 331 and the second insertion strip 334 are plugged into the second insertion strip 332. 2 are both in contact with the inner upper surface of the inner steel plate 21 and are fastened with screws, the third slot 223 and the fourth slot 224 are symmetrically opened on both sides of the lower part of the outer steel plate 22, the third slot 223 is located on the side of the fourth slot 224 close to the central column 1, the third slot 223 is plugged with the third plugging strip 333, the fourth slot 224 is plugged with the fourth plugging strip 334, the upper surfaces of the third plugging strip 333 and the fourth plugging strip 334 are both in contact with the inner upper surface of the outer steel plate 22 and are fastened with screws, the positioning block 215 is arranged at intervals on the side of the inner steel plate 21 away from the central column 1, the lower part of the side of the outer steel plate 22 close to the central column 1 is opened with a corresponding positioning slot 225, the positioning slot 225 is plugged with the positioning block 215 and is fastened with screws, and the upper surface of the positioning block 215 is in contact with the inner upper surface of the outer steel plate 22.

[0030] Furthermore, the lower part of the embedded plate 3 is inserted into the ground of the foundation pit, and a plurality of grooves 11 are spaced apart along the circumferential direction on the outer wall of the central column 1, and a plurality of first fixing holes 12 are spaced apart and penetrated at the lower part of the groove 11. A convex plate 31 is fixedly provided at one end of the embedded plate 3 close to the central column 1, and the convex plate 31 is plugged into the lower part of the groove 11. A plurality of first positioning holes 311 are spaced apart on the surface of one side of the convex plate 31 close to the central column 1, and the first positioning holes 311 correspond one-to-one to the first fixing holes 12 and are fastened and connected by screws.

[0031] Furthermore, a plurality of through holes 32 are spaced apart at one end of the embedded plate 3 away from the convex plate 31 , and anchor rods 5 are passed through the through holes 32 , and the lower ends of the anchor rods 5 are inserted into the ground of the foundation pit.

[0032] Furthermore, the lower surfaces of the inner steel plate 21 , the outer steel plate 22 and the convex plate 31 are all in contact with the foundation pit ground.

[0033] Furthermore, the sealing ring 4 is made of a steel structure, and a plurality of reinforcement strips 41 are arranged at intervals along the circumferential direction on the inner wall of the sealing ring 4. The reinforcement strips 41 are plugged into the upper part of the groove 11, and a plurality of second positioning holes 42 are opened at intervals in the middle of the reinforcement strip 41. A plurality of second fixing holes 13 are opened at intervals in the upper part of the groove 11. The second positioning holes 42 correspond to the second fixing holes 13 one by one and are fastened and connected by screws. The groove 11 opened on the outer wall of the center column 1 plays a positioning role for the embedded plate 3. After the installation is completed, the sealing ring 4 is inserted into the upper part of the center column 1 to reinforce the strength of the center column 1. By welding the connection between the sealing ring 4 and the inner steel plate 21, the stability of the entire fan foundation is further enhanced.

[0034] When a mountain wind turbine foundation structure is in use, a foundation pit is dug at the location where the wind turbine needs to be installed, a central column 1 is installed at the center of the foundation pit, and a pre-buried pit is dug according to the size of the embedded plate 3, the convex plate 31 of the embedded plate 3 is inserted into the lower part of the groove 11, and the lower end of the embedded plate 3 is inserted into the pre-buried pit, the lower end of the anchor rod 5 is passed through the through hole 32 and driven into the ground, and at the same time, the pre-buried pit is backfilled and the embedded plate 3 is fixed to the central column 1 by screws inserted into the first fixing hole 12 and the first positioning hole 311, and the other embedded plates 3 are installed in this way, the first slot 213 of the inner steel plate 21 is plugged into the first insertion strip 331, the second slot 214 is plugged into the second insertion strip 332, and the inner steel plate 21 is fastened to the embedded plates 3 on both sides of it by screws, and the positioning slot 225 of the outer steel plate 22 is connected to the already The positioning block 215 of the installed inner steel plate 21 is plugged in and fastened by screws to fasten the outer steel plate 22 to the inner steel plate 21. At the same time, the third slot 223 of the outer steel plate 22 is plugged in the third insertion strip 333, and the fourth slot 224 is plugged in the fourth insertion strip 334, and the outer steel plate 22 is fastened to the embedded plates 3 on both sides of it by screws, and the installation of the support part 2 is completed by analogy. When all the support parts 2 are installed, the reinforcement strip 41 of the sealing ring 4 is plugged in the groove 11, and the lower surface of the sealing ring 4 is fitted with the arc surface formed by splicing multiple inner steel plates 21 and multiple embedded plates 3. The screws are inserted into the second fixing holes 13 and the second positioning holes 42, and the sealing ring 4 is fixedly connected to the central column 1. At the same time, the connection between the sealing ring 4 and the inner steel plate 21 is welded. At this time, the installation of the entire fan foundation is completed. When the device is in use, the support part 2 and the embedded plate 3 are sequentially spliced ​​to form the entire fan foundation. The inner steel plate 21 and the outer steel plate 22 are plugged into the embedded plate 3 and then fastened with screws. There is no need to grout the joints, thus avoiding problems such as cracking of the entire fan foundation due to terrain factors and reducing safety hazards.

Claims

1. A mountain wind turbine foundation structure is convenient for installing a wind turbine in a foundation pit in a mountain area, and is characterized by: The invention comprises a central column (1), multiple groups of support parts (2), multiple embedded plates (3) and a sealing ring (4); the central column (1) is fixedly arranged in the middle of a foundation pit; the multiple embedded plates (3) and multiple groups of support parts (2) are arranged in an array along the circumferential direction on the outside of the central column (1); the support parts (2) and the embedded plates (3) are arranged in a staggered manner; each embedded plate (3) is located between two adjacent groups of support parts (2); the embedded plates (3) are plugged into the lower part of the central column (1); the support parts (2) and the embedded plates (3) are plugged into and fixedly connected by screws; the sealing ring (4) is sleeved on the outer side of the upper part of the central column (1); the lower surface of the sealing ring (4) abuts against the upper surface of the embedded plate (3) and is fixedly connected to the support parts (2); and the inner side of the support parts (2) is fixedly provided with multiple ribs along the circumferential direction.

2. A mountain wind turbine foundation structure according to claim 1, characterized in that: The support portion (2) comprises an inner steel plate (21) and an outer steel plate (22) both of which are fan-shaped; one end of the inner steel plate (21) abuts against the outer wall of the central column (1), and the other end is plugged and fixedly connected to the outer steel plate (22) via a positioning block (215).

3. A mountain wind turbine foundation structure according to claim 2, characterized in that: An inner fixing plate (211) is fixedly arranged in the middle of the inner steel plate (21), and a plurality of inner ribs (212) are fixedly arranged on both sides of the inner fixing plate (211); an outer fixing plate (221) is fixedly arranged in the middle of the outer steel plate (22), and a plurality of outer ribs (222) are fixedly arranged on both sides of the outer fixing plate (221); and the ends of the inner ribs (212) and the outer ribs (222) are both in contact with the side wall of the embedded plate (3).

4. A mountain wind turbine foundation structure according to claim 3, characterized in that: A plurality of positioning strips (33) are symmetrically arranged on both sides of the embedded plate (3), and a plurality of corresponding slots are symmetrically opened on both sides of the lower parts of the inner steel plate (21) and the outer steel plate (22), and the slots on the inner steel plate (21) and the outer steel plate (22) are respectively plugged into and fixedly connected with the corresponding positioning strips (33).

5. A mountain wind turbine foundation structure according to claim 1, characterized in that: The lower part of the embedded plate (3) is inserted into the ground of the foundation pit, a plurality of grooves (11) are arranged on the outer wall of the central column (1) at intervals in the circumferential direction, and a convex plate (31) is fixedly arranged at one end of the embedded plate (3) close to the central column (1), and the convex plate (31) is inserted into and fixedly connected with the lower part of the groove (11).

6. A mountain wind turbine foundation structure according to claim 5, characterized in that: A plurality of through holes (32) are provided at intervals at one end of the embedded plate (3) away from the convex plate (31), anchor rods (5) are inserted into the through holes (32), and the lower ends of the anchor rods (5) are inserted into the ground of the foundation pit.

7. A mountain wind turbine foundation structure according to claim 4, characterized in that: The lower surfaces of the inner steel plate (21) and the outer steel plate (22) are both in contact with the ground of the foundation pit.

8. A mountain wind turbine foundation structure according to claim 5, characterized in that: A plurality of reinforcement strips (41) are arranged at intervals along the circumferential direction on the inner wall of the sealing ring (4), and the reinforcement strips (41) are plugged into and fixedly connected to the upper part of the groove (11).

Images