Fan foundation and equipment cabinet platform integrated structure and installation method

Abstract

The invention discloses a draught fan foundation and equipment cabinet platform integrated structure and an installation method, the draught fan foundation comprises a middle ring extending into a lower foundation, the top of the middle ring is provided with a steel tower butt joint boss, the periphery of the middle ring is provided with a plurality of supporting legs, one end of each supporting leg is connected with the steel tower butt joint boss and the middle ring, and the other end of each supporting leg is connected with the lower foundation; a large-diameter inner cavity is formed in the middle ring, a small-diameter inner cavity communicated with the inner cavity is formed in the middle of the steel tower butt joint boss, and the steel tower butt joint boss is used for fixing a butt joint steel tower. The ring main unit platform enters the large-diameter inner cavity from the small-diameter inner cavity and is fixedly connected with the cavity wall pre-embedded plate of the large-diameter inner cavity; the transformer platform is mounted on the upper end face of the steel tower butt joint boss; and the alternating current device platform is positioned above the transformer platform and is fixedly arranged in the steel tower. The advantages of the fan foundation and the steel tower are reasonably utilized, the equipment cabinet platform is reasonably arranged in a limited space, the design weight of the steel tower is reduced, and the maintenance cost of an electrical system is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbine equipment, and in particular to an integrated structure of a wind turbine foundation and an equipment cabinet platform and an installation method. Background Art

[0002] The wind turbine equipment cabinet platform is one of the core components of the wind turbine. Its main function is to support and protect the wind turbine equipment cabinet. It is located at a specific position of the wind turbine to ensure the safe and stable operation of the equipment cabinet.

[0003] Currently, there are two common ways to install equipment cabinet platforms: the first is to place the equipment cabinet outside the wind turbine tower, which requires a large space to be reserved for the equipment cabinet installation location, which is costly; the second is to install all platforms inside the steel tower, which increases the difficulty of steel tower design and significantly increases the weight of the steel tower, which is not conducive to equipment cabinet maintenance.

[0004] Therefore, in view of the above technical problems, how to reduce the design weight of the steel tower and reduce the operation and maintenance costs are technical problems that technical personnel in this field need to solve. Summary of the invention

[0005] The purpose of this application is to provide an integrated structure and installation method of a fan foundation and equipment cabinet platform, rationally utilize the respective advantages of the fan foundation and the steel tower, and rationally layout the equipment cabinet platform in a limited space, thereby reducing the design weight of the steel tower, extending the service life of the electrical system, and reducing the maintenance cost of the electrical system.

[0006] To achieve the above objectives, the present application provides an integrated structure of a fan foundation and an equipment cabinet platform, comprising:

[0007] The wind turbine foundation comprises an intermediate ring extending into the lower foundation, a steel tower docking boss is provided on the top of the intermediate ring, a plurality of supporting legs are provided on the outer periphery of the intermediate ring, one end of the supporting leg is connected to the steel tower docking boss and the intermediate ring, and the other end is connected to the lower foundation, the interior of the intermediate ring has a large-diameter inner cavity extending into the lower foundation, the middle of the steel tower docking boss is provided with a small-diameter inner cavity connected to the inner cavity, and the steel tower docking boss is used to fix the docking steel tower;

[0008] The ring main unit platform enters the large diameter inner cavity from the small diameter inner cavity and is fixedly connected to the cavity wall embedded plate of the large diameter inner cavity;

[0009] The transformer platform is mounted on the upper end surface of the butt boss of the steel tower and is located within the cylindrical range of the steel tower;

[0010] The AC platform is located above the transformer platform and is fixedly arranged in the steel tower.

[0011] Preferably, the intermediate ring and the supporting legs are cast together with the lower foundation.

[0012] Preferably, the intermediate ring located above the lower foundation is provided with a basic door connected to the large-diameter inner cavity, and an escape door corresponding to the position of the communicator platform is provided on the steel tower.

[0013] Preferably, an upper anchor plate is provided on the upper end surface of the steel tower docking boss, and the transformer platform is fixed to the steel tower docking boss through the upper anchor plate.

[0014] Preferably, the ring main unit platform comprises:

[0015] The inner ring platform comprises a platform support frame and an inner ring platform plate arranged at the upper end of the platform support frame, the lower end of the platform support frame is placed on the bottom of the large-diameter inner cavity, the inner ring platform plate is located in the middle section of the large-diameter inner cavity, and the outer diameter of the inner ring platform is smaller than the inner diameter of the small-diameter inner cavity;

[0016] The outer ring platform comprises an outer ring platform plate fixedly connected to the platform support frame, a plurality of the outer ring platform plates are distributed on the outer periphery of the inner ring platform plate, the outer ring platform plate is coplanar with the inner ring platform plate, and the outer contours of the plurality of outer ring platform plates are adapted to the cavity wall of the large diameter inner cavity, and are fixedly connected to the embedded plate on the cavity wall of the large diameter inner cavity.

[0017] Preferably, the platform support frame includes columns and platform beams, one end of the multiple columns is arranged at the bottom of the large-diameter inner cavity, and the platform beam is fixedly arranged at the other end of the multiple columns. The platform beam is a channel steel with an integral arc bend, and the outer ring of the channel steel is evenly welded with a support adapter plate for connecting the outer ring platform plate.

[0018] Preferably, a bolt adjustment seat is installed at the lower end of the column, and the bolt adjustment seat includes a first support plate fixed to the lower end of the column, the first support plate is provided with a screw hole, a bolt is passed through the screw hole, the bolt head is connected to the second support plate, and the second support plate abuts against the bottom of the large-diameter inner cavity.

[0019] Preferably, the inner ring of the outer ring platform plate is provided with a first support member fixedly connected to the support adapter plate, and the outer ring of the outer ring platform plate is provided with a second support member fixedly connected to the embedded plate.

[0020] Preferably, the first support member and the second support member both include angle irons, a reinforcing rib is provided in the middle of the angle iron, and the angle irons on both sides of the reinforcing rib are respectively used to connect two adjacent outer ring platform plates.

[0021] An installation method, applicable to the above-mentioned integrated structure of fan foundation and equipment cabinet platform, comprises:

[0022] Fabricate wind turbine foundation and steel tower;

[0023] The inner ring platform is hoisted, and the inner ring platform enters the large diameter inner cavity from the small diameter inner cavity, and the outer ring platform is installed on the outer periphery of the inner ring platform, and the outer ring platform is fixed to the cavity wall of the large diameter inner cavity;

[0024] The AC platform and steel tower are installed, and the steel tower is hoisted in a vertical state;

[0025] Hoist the ring main unit to the ring main unit platform, make and install the transformer platform, hoist the transformer to the transformer platform, and hoist the converter to the converter platform;

[0026] The steel tower is inserted into the steel tower docking boss and flanged.

[0027] Compared with the above background technology, the fan foundation of the present application includes an intermediate ring, the intermediate ring has a large diameter inner cavity, the ring network cabinet platform is arranged in the large diameter inner cavity, a steel tower docking boss is arranged on the top of the intermediate ring, the transformer platform is installed on the upper end face of the steel tower docking boss, and the upper end face of the fan foundation is load-bearing, and the converter platform is located in the steel tower above the transformer platform, so that the equipment cabinet platform is divided into three layers of upper, middle and lower. In this arrangement, only the converter platform is located in the steel tower, which greatly reduces the design weight of the steel tower and is conducive to cost control. The present application reasonably utilizes the space of the fan foundation and the steel tower, and arranges the electrical system in a reasonable integrated and layered manner, thereby extending the service life of the electrical system and reducing the maintenance cost of the electrical system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the integrated structure of the fan foundation and equipment cabinet platform provided in the embodiment of the present application;

[0030] Figure 2 A schematic diagram of the wind turbine foundation structure provided in an embodiment of the present application;

[0031] Figure 3 A cross-sectional view of a fan foundation provided in an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the structure of the communicator platform provided in the embodiment of the present application;

[0033] Figure 5 A schematic diagram of the transformer platform structure provided in an embodiment of the present application;

[0034] Figure 6 A schematic diagram of the structure of the ring main unit platform provided in the embodiment of the present application;

[0035] Figure 7 A schematic diagram of the inner ring platform structure provided in an embodiment of the present application;

[0036] Figure 8 A schematic diagram of the structure of the platform support frame provided in the embodiment of the present application;

[0037] Fig. 9 A schematic diagram of the bolt adjustment seat structure provided in an embodiment of the present application;

[0038] Fig.10 A schematic diagram of the structure of the outer ring platform plate provided in an embodiment of the present application;

[0039] Fig.11 A schematic diagram of the structure of the first support member and the second support member provided in an embodiment of the present application;

[0040] Fig.12 A flow chart of the installation method provided in an embodiment of the present application.

[0041] In the figure: 1- fan foundation; 2- ring main unit platform; 3- transformer platform; 4- AC platform; 5- steel tower; 6- AC cabinet; 7- transformer cabinet; 8- ring main unit; 9- bolt adjustment seat;

[0042] 11-middle ring; 12-steel tower docking boss; 13-support leg; 14-foundation door; 15-lower foundation; 16-upper anchor plate; 111-large diameter inner cavity; 121-small diameter inner cavity;

[0043] 21-inner ring platform; 22-outer ring platform; 211-inner ring platform plate; 212-platform support frame; 2121-column; 2122-platform beam; 2123-support adapter plate; 221-outer ring platform plate; 222-first support member; 223-second support member; 2221-angle iron; 2222-reinforcement rib;

[0044] 51-Escape door;

[0045] 91 - first support plate; 92 - bolt; 93 - second support plate. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0049] like Figure 1 As shown, in this embodiment, a structure integrating a fan foundation and an equipment cabinet platform is provided, including a fan foundation 1. The current foundations are all cast on the ground, and the upper end surface of the foundation is basically flush with the ground. The foundation construction and foundation strength cannot be met in sandy areas or areas with soft soil. The fan foundation 1 of the present application has a lower foundation 15, which can be extended into the ground for a certain length and fixed on the ground by pouring concrete; at the same time, the fan foundation 1 also includes an intermediate ring 11 extending into the lower foundation 15, and the intermediate ring 11 can be cast with the lower foundation 15 concrete to form an integrated structure, thereby improving the overall stability of the fan foundation 1. A steel tower docking boss 12 is provided on the top of the intermediate ring 11, and a plurality of evenly distributed support legs 13 are provided on the outer periphery of the intermediate ring 11. One end of the support leg 13 is connected to the steel tower docking boss 12 and the intermediate ring 11, and the other end is cast with the lower foundation 15 or the ground, thereby strengthening the fan foundation 1 and ensuring that the load is transferred to the ground to meet the foundation construction in sandy areas.

[0050] Please refer to Figure 3 The interior of the middle ring 11 has a large-diameter inner cavity 111 extending into the lower foundation 15, and the middle part of the steel tower docking boss 12 is provided with a small-diameter inner cavity 121 connected to the inner cavity. The ring network cabinet platform 2 can be hoisted from the small-diameter inner cavity 121 into the large-diameter inner cavity 111, and the ring network cabinet platform 2 is fixedly set inside the middle ring 11 through the embedded plate of the cavity wall of the large-diameter inner cavity 111.

[0051] The transformer platform 3 is installed on the upper end surface of the steel tower docking boss 12. At the same time, the steel tower docking boss 12 is also used to fix the docking steel tower 5, and after the steel tower 5 is installed, the transformer platform 3 can be located within the cylindrical range of the steel tower. The transformer platform 3 is located above the transformer platform 3 and is fixedly arranged in the steel tower 5.

[0052] In summary of the above embodiments, the fan foundation 1 of the present application includes an intermediate ring 11, the intermediate ring 11 has a large diameter inner cavity 111, the ring network cabinet platform 2 is arranged in the large diameter inner cavity 111, the top of the intermediate ring 11 is provided with a steel tower docking boss 12, the transformer platform 3 is installed on the upper end face of the steel tower docking boss 12, and the upper end face of the fan foundation 1 is load-bearing, and the AC platform 4 is located in the steel tower 5 above the transformer platform 3, so that the equipment cabinet platform is divided into three layers of upper, middle and lower. In this arrangement, only the converter platform is located in the steel tower 5, which greatly reduces the design weight of the steel tower 5 and is conducive to cost control. The present application reasonably utilizes the space of the fan foundation 1 and the steel tower 5, and arranges the electrical system in a relatively closed space between the fan foundation 1 and the steel tower 5 in a reasonable integrated and layered manner, thereby extending the service life of the electrical system and reducing the maintenance cost of the electrical system.

[0053] In some embodiments, the intermediate ring 11 located above the lower foundation 15 is provided with a basic door 14 connected to the large diameter inner cavity 111, and an escape door 51 corresponding to the position of the exchanger platform 4 is provided on the steel tower 5. Please refer to Figure 1 and Figure 2 The current foundation is roughly flush with the ground, and the tower door is relatively low relative to the ground, which poses a risk of being buried by wind and sand. However, the present application arranges a foundation door 14 and an escape door 51 at the converter platform positions of the intermediate ring 11 and the steel tower 5, respectively. The foundation door 14 is a maintenance passage for the equipment cabinet and a regular access passage for personnel, and the escape door 51 is an escape tower door for special circumstances (such as extreme windy and sandy weather).

[0054] An upper anchor plate 16 is provided on the upper end surface of the steel tower docking boss 12, and the transformer platform 3 is fixed to the steel tower docking boss 12 through the upper anchor plate 16. In addition, a water cooling system can be arranged in the large diameter inner cavity 111, and the water cooling system can be placed on the ring network cabinet platform 2 to cool down the electrical equipment; a lifting system can also be arranged in the large diameter inner cavity 111 and the small diameter inner cavity 121 to make full use of the internal space of the fan foundation 1.

[0055] Figure 4 A schematic diagram of the structure of the communicator platform 4 provided in the embodiment of the present application; Figure 5 A schematic diagram of the structure of the transformer platform 3 provided in the embodiment of the present application; Figure 6This is a structural schematic diagram of the ring main unit platform 2 provided in the embodiment of the present application; after the AC platform 4, the transformer platform 3, and the ring main unit platform 2 are installed in place, the corresponding AC cabinet 6, the transformer cabinet 7, and the ring main unit 8 can be hoisted.

[0056] The ring main unit platform 2 includes an inner ring platform 21 and an outer ring platform 22. Figure 6 The bearing area of ​​the ring main unit platform 2 is circular as a whole to adapt to the cavity wall of the large diameter inner cavity 111. Further, the inner ring platform 21 includes a platform support frame 212 and an inner ring platform plate 211 arranged at the upper end of the platform support frame 212. Please refer to Figure 7 The lower end of the platform support frame 212 is placed on the bottom of the large diameter inner cavity 111, and the inner ring platform plate 211 is located in the middle section of the large diameter inner cavity 111. The outer diameter of the inner ring platform 21 is smaller than the inner diameter of the small diameter inner cavity 121.

[0057] It should be pointed out that when hoisting the ring main unit platform 2, it can be hoisted in parts, that is, after the inner ring platform 21 is manufactured, the inner ring platform 21 can be hoisted first, and then hoisted downward from the top of the fan foundation 1. The inner ring platform 21 passes through the small-diameter inner cavity 121 into the large-diameter inner cavity 111, and the installation of the inner ring platform 21 and the outer ring platform 22 is completed in the large-diameter inner cavity 111.

[0058] The outer ring platform 22 includes an outer ring platform plate 221 fixedly connected to the platform support frame 212, and multiple outer ring platform plates 221 can smoothly pass through the small diameter inner cavity 121 into the large diameter inner cavity 111. Multiple outer ring platform plates 221 are distributed on the outer periphery of the inner ring platform plate 211. The outer ring platform plate 221 and the inner ring platform plate 211 are coplanar, and the outer contours of the multiple outer ring platform plates 221 are adapted to the cavity wall of the large diameter inner cavity 111, and are fixedly connected to the embedded plates on the cavity wall of the large diameter inner cavity 111, thereby forming a Figure 6 The ring main unit platform 2 is shown.

[0059] Please refer to Figure 8 The platform support frame 212 includes columns 2121 and platform beams 2122. One end of the plurality of columns 2121 is arranged at the bottom of the large-diameter inner cavity 111, and the platform beams 2122 are fixedly arranged at the other ends of the plurality of columns 2121. The platform beams 2122 and the columns 2121 can be fixed by welding or screwing. Of course, a plurality of cross beams can be added in the middle of the columns 2121 to improve the overall stability of the platform support frame 212. The platform beams 2122 are integrally curved arcs of channel steel to fit the inner ring platform plate 211 with a circular outer contour. The outer ring of the channel steel is uniformly welded with support adapter plates 2123 for connecting the outer ring platform plate 221, so that the inner ring platform plate 211 and the outer ring platform plate 221 are regarded as an integrated plate-like structure.

[0060] In addition, in order to ensure that the ring main unit platform 2 can be stably arranged in the large diameter inner cavity 111, a bolt adjustment seat 9 can also be installed at the lower end of the column 2121, please refer to Fig. 9 and Fig.10 The bolt adjustment seat 9 includes a first support plate 91 fixed to the lower end of the column 2121. The first support plate 91 is provided with a screw hole, and a bolt 92 is passed through the screw hole. Two sets of nuts are provided on the outer periphery of the bolt 92. The two sets of nuts are clamped on the first support plate 91. The head of the bolt 92 is connected to the second support plate 93, and the second support plate 93 abuts against the bottom of the large-diameter inner cavity 111. By adjusting the position of the two sets of nuts, the protruding length of the bolt 92 relative to the first support plate 91 is adjusted, and then the height of the corresponding column 2121 is adjusted to ensure that the column 2121 can stand stably.

[0061] Please refer to Fig.10 The inner ring of the outer ring platform plate 221 is provided with a first support member 222 fixedly connected to the support adapter plate 2123, and the outer ring of the outer ring platform plate 221 is provided with a second support member 223 fixedly connected to the embedded plate. The first support member 222 and the second support member 223 both include angle irons 2221, please refer to Fig.11 A reinforcing rib 2222 is provided in the middle of the angle iron 2221, and the angle irons 2221 on both sides of the reinforcing rib 2222 are respectively used to connect two adjacent outer ring platform plates 221, so that the multiple outer ring platform plates 221 are relatively fixed to form a stable outer ring support structure, and cooperate with the inner ring platform plate 211 to form a stable support structure for the ring network cabinet platform 2.

[0062] The ring main unit platform 2 of the present application adopts a split design of an inner ring platform 21 and an outer ring platform 22. The inner ring platform 21 can be hoisted as a whole through the small-diameter inner cavity 121, saving the work hours of assembling the platform plate and the support frame on site.

[0063] This embodiment also provides an installation method, which can be applied to the above-mentioned integrated structure of the fan foundation 1 and the equipment cabinet platform, please refer to Fig.12 , the method comprising:

[0064] Produce a wind turbine foundation 1 and a steel tower 5;

[0065] The inner ring platform 21 is hoisted, and the inner ring platform 21 enters the large diameter inner cavity 111 from the small diameter inner cavity 121, and the outer ring platform 22 is installed on the outer periphery of the inner ring platform 21, and the outer ring platform 22 is fixed to the cavity wall of the large diameter inner cavity 111;

[0066] The AC platform 4 and the steel tower 5 are installed, and the steel tower 5 is hoisted in a vertical state;

[0067] Hoist the ring main unit 8 to the ring main unit platform 2, make and install the transformer platform 3, hoist the transformer to the transformer platform 3, and hoist the converter to the converter platform;

[0068] The steel tower is inserted into the steel tower docking boss 12 and flange-butted.

[0069] The converter platform, transformer platform 3, and ring main unit platform 2 are all independent of each other and have no production sequence. This avoids the need for conventional equipment cabinet platforms to be installed in sequence, which affects the production progress.

[0070] After the on-site construction of the wind turbine foundation 1 is completed, the ring network cabinet platform 2 and the transformer platform 3 can be installed in advance at the same time, and the rear of the steel tower 5 can be installed downward as a whole to improve the on-site installation progress.

[0071] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0072] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. An integrated structure of a fan foundation and an equipment cabinet platform, characterized in that: include: A wind turbine foundation (1), comprising an intermediate ring (11) extending into a lower foundation (15), a steel tower docking boss (12) being provided at the top of the intermediate ring (11), a plurality of support legs (13) being provided at the outer periphery of the intermediate ring (11), one end of the support leg (13) being connected to the steel tower docking boss (12) and the intermediate ring (11), and the other end being connected to the lower foundation (15), the intermediate ring (11) having a large-diameter inner cavity (111) extending into the lower foundation (15), a small-diameter inner cavity (121) being provided in the middle of the steel tower docking boss (12) and being connected to the inner cavity, and the steel tower docking boss (12) being used for fixing and docking the steel tower (5); The ring main unit platform (2) enters the large-diameter inner cavity (111) from the small-diameter inner cavity (121) and is fixedly connected to a cavity wall embedded plate of the large-diameter inner cavity (111); A transformer platform (3) is mounted on the upper end surface of the steel tower docking boss (12) and is located within the cylindrical range of the steel tower (5); The AC platform (4) is located above the transformer platform (3) and is fixedly arranged in the steel tower (5).

2. The integrated structure of fan foundation and equipment cabinet platform according to claim 1 is characterized in that: The intermediate ring (11) and the supporting legs (13) are cast together with the lower foundation (15).

3. The integrated structure of fan foundation and equipment cabinet platform according to claim 1 is characterized in that: The intermediate ring (11) located above the lower foundation (15) is provided with a basic door (14) communicating with the large-diameter inner cavity (111), and an escape door (51) corresponding to the position of the communicator platform (4) is provided on the steel tower (5).

4. The integrated structure of fan foundation and equipment cabinet platform according to claim 1 is characterized in that: An upper anchor plate (16) is provided on the upper end surface of the steel tower docking boss (12), and the transformer platform (3) is fixed to the steel tower docking boss (12) via the upper anchor plate (16).

5. The integrated structure of fan foundation and equipment cabinet platform according to claim 1 is characterized in that: The ring main unit platform (2) comprises: The inner ring platform (21) comprises a platform support frame (212) and an inner ring platform plate (211) arranged at the upper end of the platform support frame (212); the lower end of the platform support frame (212) is placed on the bottom of the large-diameter inner cavity (111); the inner ring platform plate (211) is located in the middle section of the large-diameter inner cavity (111); and the outer diameter of the inner ring platform (21) is smaller than the inner diameter of the small-diameter inner cavity (121); The outer ring platform (22) comprises an outer ring platform plate (221) fixedly connected to the platform support frame (212), a plurality of the outer ring platform plates (221) being distributed on the periphery of the inner ring platform plate (211), the outer ring platform plate (221) being coplanar with the inner ring platform plate (211), and the outer contours of the plurality of the outer ring platform plates (221) being adapted to the cavity wall of the large-diameter inner cavity (111), and being fixedly connected to the embedded plate on the cavity wall of the large-diameter inner cavity (111).

6. The integrated structure of fan foundation and equipment cabinet platform according to claim 5 is characterized in that: The platform support frame (212) comprises columns (2121) and platform beams (2122), one end of the plurality of columns (2121) is arranged at the bottom of the large-diameter inner cavity (111), and the platform beam (2122) is fixedly arranged at the other end of the plurality of columns (2121), and the platform beam (2122) is an integrally arc-bent channel steel, and the outer ring of the channel steel is evenly welded with a support adapter plate (2123) for connecting the outer ring platform plate (221).

7. The integrated structure of fan foundation and equipment cabinet platform according to claim 6 is characterized in that: A bolt adjustment seat (9) is installed at the lower end of the column (2121), and the bolt adjustment seat (9) comprises a first support plate (91) fixed to the lower end of the column (2121), the first support plate (91) is provided with a screw hole, a bolt (92) is passed through the screw hole, the head of the bolt (92) is connected to a second support plate (93), and the second support plate (93) is in contact with the bottom of the large-diameter inner cavity (111).

8. The integrated structure of fan foundation and equipment cabinet platform according to claim 6 is characterized in that: The inner ring of the outer ring platform plate (221) is provided with a first support member (222) fixedly connected to the support adapter plate (2123), and the outer ring of the outer ring platform plate (221) is provided with a second support member (223) fixedly connected to the embedded plate.

9. The integrated structure of fan foundation and equipment cabinet platform according to claim 8 is characterized in that: The first support member (222) and the second support member (223) both comprise angle irons (2221), a reinforcing rib (2222) being provided in the middle of the angle irons (2221), and the angle irons (2221) on both sides of the reinforcing rib (2222) are respectively used to connect two adjacent outer ring platform plates (221).

10. An installation method, characterized in that: The integrated structure of the fan foundation and the equipment cabinet platform according to any one of claims 1 to 9 comprises: Fabricate a wind turbine foundation (1) and a steel tower (5); The inner ring platform (21) is hoisted, the inner ring platform (21) enters the large diameter inner cavity (111) from the small diameter inner cavity (121), the outer ring platform (22) is installed on the outer periphery of the inner ring platform (21), and the outer ring platform (22) is fixed to the cavity wall of the large diameter inner cavity (111); The exchanger platform (4) and the steel tower (5) are installed, and the steel tower (5) is hoisted to be in a vertical state; Hoisting the ring main unit (8) to the ring main unit platform (2), manufacturing and installing the transformer platform (3), hoisting the transformer to the transformer platform (3), and hoisting the converter to the converter platform; The steel tower (5) is inserted into the steel tower docking boss (12) and flange-butted.

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