A tower base equipment framework for a wind turbine

Abstract

The present invention discloses a tower base equipment framework for a wind turbine generator, which comprises a converter - control layer, a transformer layer, and a main bracket vertically connecting the converter - control layer and the transformer layer; both the converter - control layer and the transformer layer include a platform framework and a platform board arranged above the platform framework for installing electrical equipment, and the platform framework is connected to the main bracket; the platform board includes a main platform board and a plurality of peripheral platform boards arranged circumferentially of the main platform board and coplanar with the main platform board, and all the peripheral platform boards are flip - hinged to the edge of the main platform board. The above - mentioned tower base equipment framework for a wind turbine generator can save transportation space, while taking into account the convenience of hoisting and improving the assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power equipment, and particularly relates to a tower base equipment framework of a wind turbine generator set. Background Art

[0002] With the maturity and improvement of wind power generation technology and the active support of relevant policies, offshore wind power has entered a period of rapid development, which also brings many problems, such as complex load simulation, poor accessibility, and great hoisting difficulty. Among them, the hoisting problem is particularly prominent. Due to the short construction window at sea, in order to improve the hoisting efficiency, a high degree of equipment integration is required. There are many tower base equipment for offshore high-power units, such as transformers, converters, ring main units, control cabinets, auxiliary transformers, switch cabinets, and supporting cooling equipment. Therefore, it is necessary to integrate the above-mentioned equipment into a whole as much as possible, and the integration needs to consider the influencing factors such as transportation, tower barrel sleeving, cable and pipeline layout. The tower base equipment framework is large in volume and has the problem of inconvenient transportation. If it is designed into multiple assembled modules for assembly, although the transportation size will be reduced, the assembly efficiency will be low.

[0003] Therefore, how to balance the transportation convenience and assembly efficiency of the tower base equipment framework has become a technical problem to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of the present invention is to provide a tower base equipment framework of a wind turbine generator set, the platform plate of which can be turned and folded, which is convenient for transportation and hoisting, and the hoisting and assembly efficiency of the equipment framework is improved.

[0005] To achieve the above purpose, the present invention provides a tower base equipment framework of a wind turbine generator set, including a converter-control layer, a transformer layer, and a main bracket vertically connecting the converter-control layer and the transformer layer;

[0006] Both the converter-control layer and the transformer layer include a platform frame and a platform plate arranged above the platform frame for installing electrical equipment, and the platform frame is connected to the main bracket;

[0007] The platform plate includes a main platform plate and a plurality of peripheral platform plates arranged circumferentially on the main platform plate and coplanar with the main platform plate, and all the peripheral platform plates are hinged and turned at the edge of the main platform plate.

[0008] Optionally, the peripheral platform plate includes a hinge fixing member fixedly connected to the outer periphery of the main platform plate, a rib plate rotatably connecting the hinge fixing member, and a platform plate end face perpendicular to the rib plate;

[0009] When the rib plate is turned and opened relative to the hinge fixing member, the platform plate end face is flush with the main platform plate.

[0010] Optionally, an I-beam for limiting the peripheral platform plate is provided on the lower end surface of the periphery of the main platform plate. The I-beam is arranged below the connection between the upper end surface of the hinge fixing member and the main platform plate, and the notch of the I-beam faces the hinge fixing member.

[0011] Optionally, one end of the rib plate connecting the hinge fixing member is provided with a hinge shaft, and the hinge fixing member is provided with a hinge hole that cooperates with the hinge shaft;

[0012] The hinge hole is an oblong hole, and the length extension direction of the oblong hole is the same as the radial direction of the main platform plate.

[0013] Optionally, the platform frame is a double-layer frame, and the bottom end of the platform frame is provided with mounting feet connected to the main bracket.

[0014] Optionally, the mounting feet and the main bracket are provided with mutually cooperating flange plates and screw holes. The flange plate is provided with positioning pin holes, and positioning pins are arranged in the positioning pin holes.

[0015] Optionally, convex holes are provided at the edge of the main platform plate, and a corbel connection bracket for connecting the main platform plate and the tower wall is arranged in the convex holes.

[0016] Optionally, the corbel connection bracket includes a pressing block, a corbel connecting member, and a tower wall connecting member for connecting the tower wall;

[0017] The pressing block is an angle block. The lower end surface of the angle block is connected to the upper end surface of the corbel connecting member, and the side end surface of the angle block is used for connecting the tower wall;

[0018] The corbel connecting member is connected to the platform frame through the side wall. The tower wall connecting member is connected below the corbel connecting member, and the tower wall connecting member is used for connecting the tower wall.

[0019] Optionally, the platform frame and the corbel connecting member are connected by bolts. Strip-shaped holes are provided on the side walls of both the platform frame and the tower corbel connecting member, and the length directions of the strip-shaped holes of the platform frame and the strip-shaped holes of the corbel connecting member are perpendicular to each other.

[0020] Compared with the above background art, the wind turbine tower base equipment framework provided by the present invention includes a converter-control layer and a transformer layer. The converter-control layer and the transformer layer are arranged vertically and are connected by a vertically arranged main bracket. Each layer includes a platform frame for carrying electrical equipment and a platform board for construction workers to stand and operate. The platform frame is connected to the main bracket. The platform board is laid above the platform frame and extends circumferentially around the platform frame. The size of the platform board becomes an important factor restricting transportation and hoisting. In the present invention, the platform board is set as a main platform board and peripheral platform boards connected to the circumference of the main platform board. The peripheral platform boards are hinged and flipped at the edge of the main platform board. During transportation or hoisting, the peripheral platform boards can be folded towards the main platform board to reduce the transportation volume. After hoisting in place, the peripheral platform boards are folded and set coplanar with the main platform board. The above-mentioned main platform board is convenient for transportation and does not require the assembly of the platform board. After hoisting in place, the peripheral platform boards can be directly flipped and opened, which improves the assembly efficiency of the wind turbine tower base equipment framework while facilitating transportation and hoisting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0022] Figure 1 Schematic diagram of the wind turbine tower base equipment framework provided by the embodiment of the invention;

[0023] Figure 2 For Figure 1 Schematic diagram of the platform frame in the middle;

[0024] Figure 3 For Figure 1 Schematic diagram of the platform board when the peripheral platform board is opened in the middle;

[0025] Figure 4 For Figure 1 Schematic diagram of the platform board when the peripheral platform board is flipped in the middle;

[0026] Figure 5 For Figure 4 Enlarged view of the hinge of the peripheral platform board in the middle;

[0027] Figure 6 For Figure 1 Partial enlarged view of part A in the middle;

[0028] Figure 7 Partial enlarged view of the horn connection bracket;

[0029] Figure 8 Rear view after assembly of the cow horn connection bracket

[0030] Wherein:

[0031] 1 - Main bracket, 2 - Platform frame, 3 - Platform plate, 4 - Main platform plate, 41 - Convex hole, 42 - Electrical equipment installation hole, 5 - Peripheral platform plate, 51 - Hinge fixing piece, 52 - Rib plate, 53 - End face of platform plate, 54 - Flange, 55 - Hinge shaft, 56 - Hinge hole, 57 - Tipping groove, 6 - I-beam, 7 - Mounting foot, 71 - Flange plate, 72 - Location pin hole, 73 - Location pin, 8 - Cow horn connection bracket, 81 - Press block, 82 - Cow horn connecting piece, 83 - Tower wall connecting piece, 84 - Tower wall stud, 9 - Tower barrel wall Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] In order to enable those skilled in the art in this technical field to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0034] Please refer to Figures 1 to 8 , Figure 1 , which is a schematic diagram of the tower base equipment framework of the wind turbine provided by the embodiment of the invention Figure 2 is Figure 1 a schematic diagram of the middle platform frame in Figure 3 is Figure 1 a schematic diagram of the platform plate when the peripheral platform plate in Figure 4 is Figure 1 opened, and Figure 5 is Figure 4 a schematic diagram of the platform plate when the peripheral platform plate in Figure 6 is Figure 1 tipped, Figure 7 is Figure 8 an enlarged view of the hinge of the peripheral platform plate in

[0035] The tower base equipment framework of the wind turbine provided by the present invention mainly includes a converter-control layer and a transformer layer, which are arranged vertically between layers and connected by a vertically arranged main support 1. Among them, the converter-control layer includes a converter layer and a control cabinet installation layer. Each layer includes a platform frame 2 connected to the main support 1. A platform board 3 is arranged on the platform frame 2. Electrical equipment such as transformers, converters, ring main units, auxiliary transformers, switch cabinets, and supporting cooling equipment are installed on the platform boards 3 of each layer and are carried by the platform frame 2 and the main support 1. Since the maintenance and operation of electrical equipment require a certain space, the platform board 3 provides an operating space for construction and maintenance personnel. The platform board 3 usually extends along the platform frame 2 to its outer periphery. The area of the platform board 3 is relatively large, making transportation and hoisting inconvenient. The present invention divides the platform board 3 into a main platform board 4 located in the central part and an outer peripheral platform board 5 arranged on the outer periphery of the main platform. The outer peripheral platform board 5 is hinged and flipped on the main platform board 4. First, the main platform board 4, the platform frame 2, and the corresponding electrical equipment are integrated into one body. During transportation, the outer peripheral platform board 5 can be flipped relative to the main platform board 4. After transportation in place, the whole is hoisted. After hoisting in place, the outer peripheral platform board 5 is flipped and opened. This not only saves transportation space but also reduces assembly construction through the integrated design of the platform board 3, facilitating the overall integration of the platform board 3, the platform frame 2, and the corresponding electrical equipment for transportation and hoisting, and improving construction efficiency.

[0036] The following will introduce the tower base equipment framework of the wind turbine provided by the present invention in detail with reference to the accompanying drawings and specific embodiments.

[0037] In a specific embodiment provided by the present invention, each layer of the tower base equipment framework of the wind turbine includes a platform frame 2 and a platform board 3. The platform frame 2 adopts a double-layer frame structure. The upper layer is used for laying the platform board 3 and installing electrical equipment. The bottom channel steel frame also serves as a bridge support beam. The lower channel steel frame helps to provide the strength of the overall platform frame 2 and at the same time reduces welding deformation during the processing. Considering the size of the galvanizing tank during the anti-corrosion treatment of the platform frame 2, the double-layer frames, that is, between the upper layer and the bottom channel steel frame, are connected by bolts, which is convenient for separate galvanizing treatment. The upper layer frame can be formed by connecting a rectangular frame and auxiliary beams. The size and shape of the platform frame 2 can be determined according to the power of the wind turbine and the floor area occupied by the corresponding electrical equipment.

[0038] The platform board 3 is laid on the upper surface of the platform frame 2. The geometric center or the center of gravity of the platform board 3 and the platform frame 2 coincide and are connected by bolts. The structure of the platform board 3 is as Figure 1 、 Figure 3 and Figure 4As shown in the figure, the platform plate 3 includes a main platform plate 4 and a plurality of peripheral platform plates 5 arranged along the circumference of the main platform plate 4. The peripheral platform plates 5 are hinged to the edge of the main platform plate 4. Specifically, the peripheral platform plate 5 is provided with a hinge fixing member 51, a rib plate 52 that rotates relative to the hinge fixing member 51, and a platform plate end face 53 vertically provided on the upper end face of the rib plate 52. The hinge fixing member 51 is fixedly connected to the outer periphery of the main platform plate 4. The hinge fixing member 51 is provided with a hinge hole 56 and a flipping groove 57. One end of the rib plate 52 is provided with a hinge shaft 55. The hinge shaft 55 is arranged in the hinge hole 56. When the hinge shaft 55 rotates relative to the hinge hole 56, the rib plate 52 moves into the flipping groove 57. The flipping groove 57 is arranged along the radial direction of the main platform plate 4. When the peripheral platform plate 5 is flipped open, that is, when the platform plate end face 53 is coplanar with the main platform plate 4, the rib plate 52 just abuts against the bottom of the flipping groove 57. The flipping groove 57 plays a role in limiting the rib plate 52, ensuring that the peripheral platform plate 5 is coplanar with the main platform plate 4 after being opened, and playing a role in extending the main platform plate 4.

[0039] Preferably, the hinge hole 56 is a strip-shaped hole that extends along the radial direction of the main platform plate 4. When the peripheral platform plate 5 is flipped towards the main platform plate 4, the hinge shaft 55 can move a certain distance along the radial direction of the main platform plate 4 in the hinge hole 56, so that the plurality of flipped peripheral platform plates 5 are staggered from each other, avoiding interference between adjacent peripheral platform plates 5.

[0040] The arrangement of the rib plate 52 and the flipping groove 57 not only plays a role in flipping and limiting the platform plate end face 53 of the peripheral platform plate 5, but also the arrangement of the rib plate 52 improves the support strength of the platform plate 3. A flanging 54 that extends vertically upward and is perpendicular to the platform plate end face 53 can also be arranged on the outer periphery of the platform plate end face 53. When the platform plate end face 53 is coplanar with the end face of the main platform plate 4, the flanging 54 extends vertically upward, preventing sundries on the platform plate 3 during construction, such as nuts, from slipping off the platform plate 3 and causing injury due to high-altitude falling objects.

[0041] Furthermore, a limiting structure is also provided circumferentially on the lower end face of the main platform plate 4. The limiting structure is arranged at the connection between the hinge fixing member 51 and the main platform plate 4, playing a role in supporting and limiting the hinge fixing member 51. The limiting structure can be an I-beam 6 or a channel steel welded below the upper end faces of the main platform plate 4 and the hinge fixing member 51. The groove opening of the I-beam 6 or the channel steel faces the outer radial direction of the platform plate 3, that is, the hinge fixing member 51 shown in the figure. This avoids deformation of the hinge fixing member 51 resulting in excessive flipping of the peripheral platform plate 5. Some of the peripheral platform plates 5 are provided with notches, which can be used for pipelines to pass through.

[0042] An electrical equipment installation hole 42 is provided in the center of the platform plate 3, so that electrical equipment such as transformers and converter controllers can be directly placed on the platform frame 2 through the electrical equipment installation hole 42. Since the number and size of electrical equipment installed on each layer of the platform frame 2 and the platform plate 3 are different, the number and size of the electrical equipment installation holes 42 on each layer of the platform plate 3 are also different.

[0043] The layers are connected by the platform plate 3, the platform frame 2 and the main bracket 1. The platform plate 3, the platform frame 2 and the electrical equipment are integrated and assembled before being hoisted. Below the platform frame 2, more specifically below the bottom channel steel frame, there are mounting feet 7 corresponding to the number of the main brackets 1. The mounting feet 7 and the main bracket 1 are both provided with flanges 71 that match each other, and the flanges 71 are provided with screw holes that match in position and number. In order to align the screw holes of the flange 71 of the mounting feet 7 with the screw holes of the flange 71 of the main bracket 1, positioning pin holes 72 are also provided on the flanges 71 of the two. The screw holes between the flanges 71 are positioned by arranging positioning pins 73 in the positioning pin holes 72, so as to facilitate bolt tightening.

[0044] After the single-layer platform plate 3 is assembled, the main bracket 1 is set on the upper end surface of the platform plate 3 to assemble the upper platform plate 3 or the electrical equipment layer. The main bracket 1 can be connected to the upper end surface of the platform plate 3 or the platform frame 2 by anchor bolts, or can be directly welded and fixed, completing the construction of the wind turbine tower base equipment frame at one time. The surrounding part of the equipment frame is also provided with a tower wall 9 for protection.

[0045] In order to further improve the support strength of the equipment frame and its platform plate 3, a bracket connection system is also provided between the platform plate 3 and the tower wall 9. Figure 1 , Figure 6 , Figure 7 and Figure 8 The main platform plate 4 is provided with a convex hole 41 for installing a corbel connection bracket 8 on its periphery. The corbel connection bracket 8 is connected to the platform frame 2, the platform plate 3 and the tower wall 9 through the convex hole 41. The corbel connection bracket 8 specifically includes a pressing block 81, a corbel connector 82 arranged below the pressing block 81, and a tower wall connector 83 arranged below the corbel connector 82. The corbel connector 82 and the pressing block 81 are inserted into the convex hole 41, the upper end face of the corbel connector 82 is fixedly connected to the pressing block 81 by bolts, the inner end face of the corbel connector 82 is fixedly connected to the platform frame 2 by bolts, and the lower end face of the corbel connector 82 is in contact with and abuts against the upper end face of the tower wall connector 83, and is fixed by bolts, so as to transfer part of the gravity of the platform frame 2 to the tower wall connector 83. The tower wall connector 83 is fixedly installed on the tower wall 9.

[0046] The briquette 81 is specifically an angular briquette 81, including two end faces perpendicular to each other. The lower end face is fixedly connected to the upper end face of the bracket connecting piece 82, and the side end face is provided with tower wall studs 84 for fixedly connecting to the tower barrel wall 9. The briquette 81 and the tower wall connecting piece 83 connect the tower barrel wall 9, realizing that part of the gravity of the platform plate 3 and the platform frame 2 is transmitted to the tower barrel wall 9 through the bracket connecting support 8, improving the stress condition of the platform frame 2. The briquette 81 can not only be an angular briquette 81, but also be cube-shaped, as long as it can play the role of connecting the bracket connecting piece 82 and the tower barrel wall 9.

[0047] In order to ensure the adjustment margin when connecting the platform frame 2 and the tower barrel wall 9, the screw holes opened on the end face where the platform frame 2 and the bracket connecting piece 82 are in contact are strip-shaped holes with different directions. For example, the strip-shaped hole of the platform frame 2 extends vertically, and the strip-shaped hole of the bracket connecting piece 82 extends horizontally. Sufficient adjustment margin is left through the different-direction setting of the strip-shaped holes, facilitating the installation of the bracket connecting support 8 in place.

[0048] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities. The layout and installation of electrical equipment, that is, the setting of the converter-control layer and the transformer layer, can refer to the prior art. The core of the present invention lies in improving the equipment framework, facilitating transportation, improving construction efficiency, and improving the overall stress of the equipment framework.

[0049] The above has introduced in detail the equipment framework of the wind turbine tower base provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A tower base equipment framework for a wind turbine unit, characterized in that, It includes a converter-control layer, a transformer layer, and a main bracket (1) vertically connecting the converter-control layer and the transformer layer; Both the converter-control layer and the transformer layer include a platform frame (2) and a platform board (3) arranged above the platform frame (2) for installing electrical equipment, and the platform frame (2) is connected to the main bracket (1); The platform board (3) includes a main platform board (4) and a plurality of peripheral platform boards (5) arranged circumferentially on the main platform board (4) and coplanar with the main platform board (4), and all the peripheral platform boards (5) are flip-hinged to the edge of the main platform board (4); A convex hole (41) is provided at the edge of the main platform board (4), and a bracket connection bracket (8) for connecting the main platform board (4) and the tower barrel wall (9) is arranged in the convex hole (41); The bracket connection bracket (8) includes a pressing block (81), a bracket connecting piece (82), and a tower wall connecting piece (83) for connecting the tower barrel wall (9); The pressing block (81) is an angle block, the lower end surface of the angle block is connected to the upper end surface of the bracket connecting piece (82), and the side end surface of the angle block is used for connecting the tower barrel wall (9); The bracket connecting piece (82) is connected to the platform frame (2) through the side wall, the tower wall connecting piece (83) is connected below the bracket connecting piece (82), and the tower wall connecting piece (83) is used for connecting the tower barrel wall (9); The platform frame (2) adopts a double-layer frame structure, and the double layers of frames are connected by bolts.

2. The tower base equipment framework for a wind turbine unit according to claim 1, characterized in that, The peripheral platform board (5) includes a hinge fixing piece (51) fixedly connected to the outer periphery of the main platform board (4), a rib plate (52) rotatably connected to the hinge fixing piece (51), and a platform board end surface (53) perpendicular to the rib plate (52); When the rib plate (52) is flipped open relative to the hinge fixing piece (51), the platform board end surface (53) is flush with the main platform board (4).

3. The tower base equipment framework for a wind turbine unit according to claim 2, characterized in that, One end of the rib plate (52) connected to the hinge fixing piece (51) is provided with a hinge shaft (55), and the hinge fixing piece (51) is provided with a hinge hole (56) matching the hinge shaft (55); The hinge hole (56) is an oblong hole, and the length extension direction of the oblong hole is the same as the radial direction of the main platform board (4).

4. The tower base equipment framework for a wind turbine unit according to claim 3, characterized in that, An I-beam (6) for limiting the peripheral platform board (5) is provided on the lower end surface of the circumference of the main platform board (4), the I-beam (6) is arranged below the connection part of the upper end surface of the hinge fixing piece (51) and the main platform board (4), and the notch of the I-beam (6) faces the hinge fixing piece (51).

5. The tower base equipment framework for a wind turbine unit according to claim 4, characterized in that, The platform frame (2) is a double-layer frame, and an installation foot (7) connected to the main bracket (1) is provided at the bottom end of the platform frame (2).

6. The tower base equipment framework for a wind turbine unit according to claim 5, characterized in that, The installation foot (7) and the main bracket (1) are provided with mutually matching flange plates (71) and screw holes, the flange plate (71) is provided with a positioning pin hole (72), and a positioning pin (73) is arranged in the positioning pin hole (72).

7. The tower base equipment framework for a wind turbine unit according to claim 6, characterized in that, The main platform board (4) is provided with electrical equipment installation holes (42) for electrical equipment to pass through and fit the platform frame (2).

8. The tower base equipment framework for a wind turbine unit according to claim 1, characterized in that, The platform frame (2) and the bracket connector (82) are connected by bolts. Strip-shaped holes are formed in the side walls of both the platform frame (2) and the bracket connector (82), and the length directions of the strip-shaped holes in the platform frame (2) and the strip-shaped holes in the bracket connector (82) are perpendicular to each other.

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