Modular support structure for onshore wind turbine generators

Abstract

The utility model relates to a kind of assembly type support structure for land wind turbine generator unit, including concrete cushion, prefabricated main component being installed on concrete cushion and the positioning ring device fixedly installed with cooperation concrete cushion;The prefabricated main component includes annular bottom plate, annular pier is set on annular bottom plate and the rib beam connected between annular bottom plate and annular pier, the positioning ring device cooperation annular pier positioning installation, the bottom of annular bottom plate is formed with multiple bottom plate cavities for cooperation concrete cushion pouring use;The assembly type support structure for land wind turbine generator unit of the technical scheme, by positioning ring device, ensure that annular pier part inside prefabricated main body is positioned and installed accurately, provide installation datum for positioning ring bottom plate installation, by the bottom plate cavity set in annular bottom plate lower end, ensure that annular bottom plate and concrete cushion between grouting forming is full, grouting density meets construction demand, improve overall construction quality.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine generators, specifically to an assembled support structure for onshore wind turbine generator sets. Background Technology

[0002] Wind power, as an important renewable energy source, has experienced rapid development, and the future development of the wind power industry will continue to show an expansion trend of "coordinated development between onshore and offshore areas, with accelerated growth on both tracks." Currently, the foundation structures for onshore wind power projects generally still use cast-in-place spread foundations or cast-in-place pile cap foundations, but these types of foundations have problems such as large casting volumes, difficulties in on-site curing, and long construction periods. Many existing support structures are constructed and installed using prefabricated structures. However, the support structure of prefabricated foundations is generally assembled from precast components. If the precast components are directly installed together, and the main structure of the precast components is poured with the concrete pad, it is easy to cause insufficient grouting density between the precast main components and the pad, resulting in substandard construction in the pouring area. At the same time, because the overall structure is large after prefabrication, and the manufacturing precision of prefabricated structures is not high, direct installation will further amplify the defects during grouting and affect the final construction quality.

[0003] Therefore, to solve the above problems, a prefabricated support structure for onshore wind turbine generators is needed. Utility Model Content

[0004] This technical solution provides an assembled support structure for onshore wind turbine generators. Through a positioning ring device, it ensures the accurate positioning and installation of the annular column part inside the prefabricated main body, providing an installation benchmark for the installation of the positioning ring base plate. The base plate cavity set at the lower end of the annular base plate ensures that the grouting between the annular base plate and the concrete cushion layer is full and the grouting density meets the construction requirements, thereby improving the overall construction quality.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An assembled support structure for onshore wind turbine generator sets includes a concrete base layer, a prefabricated main component installed on the concrete base layer, and a positioning ring device for fixed installation in conjunction with the concrete base layer; the prefabricated main component includes an annular base plate, an annular column set on the annular base plate, and a rib beam connecting the annular base plate and the annular column; the positioning ring device is used for positioning and installation in conjunction with the annular column; the bottom of the annular base plate has multiple base plate cavities for use in conjunction with the pouring of the concrete base layer.

[0006] Furthermore, multiple base plate cavities are continuously distributed at the bottom of the annular base plate, and each base plate cavity is provided with a cavity grouting hole for grouting.

[0007] Furthermore, the rib beam has grouting holes along the vertical direction for grouting into the bottom plate cavity.

[0008] Furthermore, a support pad is arranged between the bottom plate cavity and the concrete pad layer.

[0009] Furthermore, the positioning ring device includes a positioning ring body, a positioning post installed on the positioning ring body, a vertical support ring plate, and a positioning ring anchor rod that is fixedly installed in conjunction with the vertical support ring plate. The positioning ring anchor rod is fixedly installed within the concrete cushion layer.

[0010] Furthermore, the positioning ring body has a positioning ring mounting hole, and the positioning post is locked in the positioning ring mounting hole and the upper end of the positioning post is positioned and installed in conjunction with the annular platform post.

[0011] Furthermore, the positioning ring anchor rods are multiple, and these multiple positioning ring anchor rods are evenly distributed along the outer circumference of the vertical support ring plate.

[0012] Furthermore, a positioning ring rib is provided between the vertical support ring plate and the positioning ring body.

[0013] Furthermore, a post-cast cushion layer is poured on the concrete cushion layer, and an anchor bolt assembly is provided on the annular column with the lower end of the anchor bolt assembly installed inside the post-cast cushion layer.

[0014] Furthermore, the outer surface of the annular base plate and the outer surface of the annular column are respectively provided with base plate hoop positioning grooves and column positioning grooves.

[0015] The beneficial effects of this technical solution are: This technical solution provides an assembled support structure for onshore wind turbine generators. Through a positioning ring device, it ensures the accurate positioning and installation of the annular column part inside the prefabricated main body, providing an installation benchmark for the installation of the positioning ring base plate. The base plate cavity set at the lower end of the annular base plate ensures that the grouting between the annular base plate and the concrete cushion layer is full and the grouting density meets the construction requirements, thereby improving the overall construction quality. Attached Figure Description

[0016] Figure 1 This is a schematic cross-sectional view of the present invention (B is the ground plane); Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the prefabricated main body component of this utility model; Figure 4 This is a schematic diagram of the base plate cavity of the prefabricated main component of this utility model; Figure 5 This is a schematic diagram of the marking of the concrete cushion layer of this utility model; Figure 6This is a schematic diagram of the positioning ring device of this utility model; Figure 7 for Figure 6 Sectional view of AA.

[0017] The attached diagram lists the components represented by each number as follows: 1-Precast main component; 2-Rib beam; 3-Annular base plate; 4-Annular pedestal; 5-Anchor bolt; 6-Steel strand; 7-Cavity grouting hole; 8-Positioning ring device; 9-Concrete pad; 10-Quick-drying cement; 11-Supporting pad; 12-Alignment line; 13-Positioning ring body; 14-Positioning column; 15-Base plate cavity; 16-Upper anchor plate; 17-Lower anchor plate; 31-Base plate stirrup positioning ring groove; 41-Anchor bolt hole; 42-Pedestal positioning ring groove; 71-Rib beam grouting hole; 81-Positioning ring anchor rod; 82-Positioning ring rib plate; 83-Vertical support ring plate; 91-Post-cast pad. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-4 As shown in the embodiment of this application, an assembled support structure for an onshore wind turbine generator set includes a concrete pad 9, a prefabricated main component 1 installed on the concrete pad 9, and a positioning ring device 8 for fixed installation in conjunction with the concrete pad 9; the prefabricated main component includes an annular base plate 3, an annular column 4 set on the annular base plate 3, and a rib beam 2 connecting the annular base plate 3 and the annular column 4; the positioning ring device 8 is positioned and installed in conjunction with the annular column 4; and the bottom of the annular base plate 3 has a plurality of base plate cavities 15 for use in conjunction with the pouring of the concrete pad 9.

[0023] The prefabricated support structure for onshore wind turbine generators in this technical solution uses a positioning ring device 8 to ensure accurate positioning and installation of the annular column 4 inside the prefabricated main body, providing an installation benchmark for the positioning ring base plate 3. The base plate cavity 15 set at the lower end of the annular base plate 3 ensures that the grouting between the annular base plate 3 and the concrete cushion layer 9 is full and the grouting density meets the construction requirements, thus improving the overall construction quality.

[0024] In this embodiment, multiple bottom plate cavities 15 are continuously distributed at the bottom of the annular bottom plate 3, and the bottom plate cavities 15 are provided with cavity grouting holes 7 for grouting.

[0025] like Figure 4 , Figure 5 As shown, the bottom of the annular base plate 3 is provided with multiple base plate cavities 15, which are continuously arranged along the radial direction (i.e., Figure 2 The bottom of the annular base plate 3 is arranged in a radial direction. The base plate cavity 15 can be made of quick-drying cement 10 as the main structure. The continuous distribution of the base plate cavity 15 structure allows the bottom to be divided into small areas for grouting during the grouting process, which ensures the internal density and improves the construction process.

[0026] In this embodiment, the rib beam 2 is provided with rib beam grouting holes 71 in the vertical direction for grouting into the bottom plate cavity 15.

[0027] like Figures 3-5 As shown, the rib beam 2 is arranged in the middle of the annular base plate 3, which serves to connect and support the annular base plate 3 and the annular column 4. In order to ensure the density of the grouting inside the annular base plate 3, rib beam grouting holes 71 are also opened on the rib beam 2 to cooperate with the grouting construction and ensure the density of each position. Of course, grouting pipes are installed at both the cavity grouting hole 7 and the rib beam grouting hole 71 (the specific installation of the grouting pipes adopts the existing technology, which will not be described in detail here) to cooperate with the grouting construction.

[0028] In this embodiment, a support pad 11 is arranged between the bottom plate cavity 15 and the concrete pad 9.

[0029] like Figure 5 As shown, during the installation of the base plate cavity 15, multiple pads are distributed between the base plate cavity 15 and the concrete pad 9. Support pads 11 are reasonably arranged in each cavity area according to the force distribution. The pads can be ABS pads (existing pads, which will not be described in detail here). The depth of the support pads 11 is basically the same as that of the base plate cavity 15. By setting the support pads 11, it is convenient to make fine adjustments to the installation height of the prefabricated main component 1 during installation, thereby improving the construction accuracy of the product.

[0030] In this embodiment, the positioning ring device 8 includes a positioning ring body 13, a positioning post 14 installed on the positioning ring body 13, a vertical support ring plate 83, and a positioning ring anchor 81 fixedly installed in conjunction with the vertical support ring plate 83. The positioning ring anchor 81 is fixedly installed in the concrete cushion layer 9.

[0031] like Figures 6-7 As shown, the positioning ring device 8 serves as the positioning and installation reference for the prefabricated main component 1. Its vertical support ring plate 83 serves as the main frame, and positioning ring anchor rods 81 are set on the outer circumference. When the concrete pad 9 is poured, the positioning ring anchor rods 81 are pre-embedded in the concrete pad 9 to cooperate with the pouring construction. After the concrete pad 9 solidifies, its positioning ring device 8 serves as the reference component to cooperate with the installation of the annular column 4, ensuring the accuracy of subsequent construction.

[0032] In this embodiment, the positioning ring body 13 is provided with a positioning ring mounting hole, and the positioning post 14 is locked and installed in the positioning ring mounting hole, with the upper end of the positioning post 14 cooperating with the annular platform post 4 for positioning and installation.

[0033] Multiple sets of positioning ring mounting holes are evenly distributed along the circumference on the positioning ring body 13. The positioning ring mounting holes are in pairs. When in use, the positioning post 14 passes through the positioning ring mounting hole, the lower end is locked by the lock nut, and the upper end passes through the positioning ring mounting hole and extends upward to a certain height, which facilitates the subsequent positioning and installation of the annular column 4. Of course, the corresponding position on the annular column 4 is provided with positioning holes for use with the positioning post 14. The method of using two positioning ring mounting holes in a pair facilitates installation while ensuring that the rotation limit is maintained during construction.

[0034] In this embodiment, the positioning ring anchor rods 81 are multiple, and these multiple positioning ring anchor rods 81 are evenly distributed along the outer circumference of the vertical support ring plate 83. The evenly spaced multiple positioning ring anchor rods 81 ensure that the overall structure is stably and reliably installed within the concrete pad layer 9.

[0035] In this embodiment, a positioning ring rib plate 82 is provided between the vertical support ring plate 83 and the positioning ring body 13. The positioning ring rib plate 82 is fixedly installed between the vertical support ring plate 83 and the positioning ring body 13 (at the lower end of the positioning ring body). The positioning ring rib plate 82 improves the overall mass of the positioning device and ensures that its performance is met.

[0036] In this embodiment, a post-cast cushion layer 91 is poured on the concrete cushion layer 9, and an anchor bolt assembly is provided on the annular column 4, with the lower end of the anchor bolt assembly installed inside the post-cast cushion layer 91.

[0037] The anchor bolt assembly includes an upper anchor plate 16, a lower anchor plate 17, and an anchor bolt 5. Each precast component has an anchor bolt hole 41 on the top surface of the annular column 4. The lower end of the anchor bolt 5 extends into the post-cast pad 91, and the upper end extends out of the upper end surface of the annular column 4 and is locked with the upper anchor plate 16 to ensure its structural performance.

[0038] In this embodiment, the outer surface of the annular base plate 3 and the outer surface of the annular column 4 are respectively provided with a base plate stirrup positioning groove 31 and a column positioning groove 42.

[0039] Positioning ring groove structures are provided on the annular base plate 3 and annular column 4 of the prefabricated main components. The subsequent structure cooperates to tension and lock the steel strands 6 to ensure the overall structural performance.

[0040] The overall structural construction process is as follows: S1. First, level and install the positioning ring device 8 at the foundation pit location, then pour the concrete cushion layer 9, and check the flatness of the positioning ring device 8 and the concrete cushion layer 9. S2, using the positioning ring device 8 as a reference, draw several positioning lines 12 on the poured concrete pad 9, and assemble the precast components in sequence with the positioning lines 12 and positioning columns 14 aligned with them. S3. After assembly, install the anchor bolt assembly and verify the assembly accuracy by checking the verticality of anchor bolt 5 and the horizontality of upper anchor plate 16. S4, Grouting of the annular bottom plate 3 is carried out. Grout is injected into each bottom plate cavity 15 through the grouting port. Grout is injected into each bottom plate cavity 15 in a spiral manner from the outside to the inside. When grout overflows from all grouting ports in the compartment, wooden plugs are used to seal them. S5. After the grouting inside the annular base plate 3 is completed, the vertical joint sealing mold is installed at the vertical joint between adjacent precast components. The vertical joint between adjacent annular base plates 3 is grouted by cast-in-place method, and the vertical joint between adjacent annular columns 4 is grouted by pressure injection method (the grouting method adopts existing technology and will not be described in detail here). S6, after the grouting material reaches the design strength, the upper and lower prestressed steel strands 6 are threaded and tensioned; S7. After tensioning is completed, high-strength grouting material is injected at 16 points on the upper anchor plate. S8. Once the grouting material reaches the design strength, the steel tower can be hoisted.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabricated support structure for onshore wind turbine generator sets, characterized in that: It includes a concrete cushion layer (9), a precast main component installed on the concrete cushion layer (9), and a positioning ring device (8) for fixed installation in conjunction with the concrete cushion layer (9); the precast main component includes an annular base plate (3), an annular column (4) set on the annular base plate (3), and a rib beam (2) connecting the annular base plate (3) and the annular column (4). The positioning ring device (8) is installed in conjunction with the annular column (4). The bottom of the annular base plate (3) has a plurality of base plate cavities (15) for use in conjunction with the pouring of the concrete cushion layer (9).

2. The prefabricated support structure for onshore wind turbine generators according to claim 1, characterized in that: Multiple bottom plate cavities (15) are continuously distributed at the bottom of the annular bottom plate (3), and the bottom plate cavities (15) are provided with cavity grouting holes (7) for grouting.

3. The prefabricated support structure for onshore wind turbine generators according to claim 2, characterized in that: The rib (2) has grouting holes (71) in the vertical direction for grouting into the bottom plate cavity (15).

4. The prefabricated support structure for onshore wind turbine generators according to claim 2, characterized in that: A support pad (11) is arranged between the bottom plate cavity (15) and the concrete pad (9).

5. The prefabricated support structure for onshore wind turbine generators according to claim 1, characterized in that: The positioning ring device (8) includes a positioning ring body (13), a positioning column (14) installed on the positioning ring body (13), a vertical support ring plate (83), and a positioning ring anchor rod (81) fixedly installed in conjunction with the vertical support ring plate (83). The positioning ring anchor rod (81) is fixedly installed in the concrete cushion layer (9).

6. The prefabricated support structure for onshore wind turbine generators according to claim 5, characterized in that: The positioning ring body (13) has a positioning ring mounting hole, and the positioning post (14) is locked in the positioning ring mounting hole and the upper end of the positioning post (14) is positioned and installed in conjunction with the annular platform post (4).

7. The prefabricated support structure for onshore wind turbine generators according to claim 5, characterized in that: The positioning ring anchor rods (81) are multiple and are evenly distributed along the outer circumference of the vertical support ring plate (83).

8. The prefabricated support structure for onshore wind turbine generators according to claim 5, characterized in that: A positioning ring rib (82) is provided between the vertical support ring plate (83) and the positioning ring body (13).

9. The prefabricated support structure for onshore wind turbine generators according to claim 1, characterized in that: A post-cast cushion layer (91) is poured on the concrete cushion layer (9), and an anchor bolt assembly is provided on the annular column (4) with the lower end of the anchor bolt assembly installed in the post-cast cushion layer (91).

10. The prefabricated support structure for onshore wind turbine generators according to claim 1, characterized in that: The outer surface of the annular base plate (3) and the outer surface of the annular column (4) are respectively provided with a base plate hoop positioning groove (31) and a column positioning groove (41).

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