Maintenance device of offshore wind generating set

Abstract

The invention relates to the technical field of offshore platforms, and provides a maintenance device of an offshore wind generating set, which comprises a hanging bracket, a guide structure and a winch, the hanging support is used for being arranged in a cabin of a center stand column, the guide structure is arranged on the hanging support, and the winch is used for being arranged on a platform formed by the center stand column and a side column. A steel wire rope of the winch is wound on the guide structure, and the winch is used for hoisting a part to be replaced. According to the maintenance device of the offshore wind generating set, the hoisting support and the guide structure are arranged in the cabin of the center stand column, the hoisting force direction of the winch can be changed, the winch is arranged on the platform, a part to be replaced is transferred from the lower portion of the cabin, and the problem that the wind generating set cannot be maintained after being installed on the center stand column is solved; the blank of the self-operation and maintenance technology of the four-stand-column type floating wind generating set is filled, the operation and maintenance cost is reduced, and meanwhile the operation and maintenance time is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore platforms, and particularly to a maintenance device for an offshore wind turbine generator set. Background Art

[0002] A transformer is an important component of an offshore wind turbine generator set. Due to its large self-weight and size, when replacing it, it needs to be lifted out and lifted into the nacelle of the wind turbine generator set by relying on large lifting equipment. The floating body structure of a floating wind turbine generator set is usually a three-column type or a four-column type. The three-column type is composed of three columns, and the three columns are arranged in a triangular shape; the four-column type is composed of four columns, and the four columns are arranged in a Y-shaped pattern.

[0003] For the four-column type, since the wind turbine generator set is installed on the central column and there are three side columns distributed around it, even a small floating crane maintenance ship cannot approach the central column, making the maintenance of the wind turbine generator set a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0004] The present invention provides a maintenance device for an offshore wind turbine generator set to solve the defect that components of a wind turbine generator set with a four-column type floating body structure cannot be replaced when a failure occurs in the prior art.

[0005] The present invention provides a maintenance device for an offshore wind turbine generator set, including: a hanging support, a guiding structure, and a winch; the hanging support is used to be arranged in the nacelle of the central column, the guiding structure is arranged on the hanging support, and the winch is used to be arranged on the platform formed by the central column and the side columns; the steel wire rope of the winch is wound around the guiding structure, and the winch is used to lift the component to be replaced.

[0006] According to the maintenance device for an offshore wind turbine generator set provided by the present invention, the guiding structure includes a first pulley, and the steel wire rope is wound around the first pulley and then connected to the component to be replaced.

[0007] According to the maintenance device for an offshore wind turbine generator set provided by the present invention, the guiding structure includes: a first pulley and a second pulley, the first pulley is connected to the hanging support; the steel wire rope is wound around the first pulley and the second pulley and then connected to the hanging support, and the second pulley is used to be connected to the component to be replaced.

[0008] According to the maintenance device for an offshore wind turbine generator set provided by the present invention, the guiding structure further includes a third pulley, the third pulley is connected to the hanging support, and the steel wire rope is sequentially wound around the third pulley, the first pulley, and the second pulley and then connected to the hanging support.

[0009] A maintenance device for an offshore wind turbine provided by the present invention further includes a tractor, which is configured to be arranged on the platform, and a towing rope of the tractor is detachably connected to the component to be replaced.

[0010] A maintenance device for an offshore wind turbine provided by the present invention, the hanging bracket includes: a first cross beam and a first longitudinal beam, the first cross beam is vertically arranged with the first longitudinal beam and is detachably connected; the first cross beam is used for connecting with the inner wall of the nacelle, the first pulley is arranged on the first cross beam, and the third pulley is arranged on the first longitudinal beam.

[0011] A maintenance device for an offshore wind turbine provided by the present invention, the hanging bracket further includes: a second cross beam and a second longitudinal beam, the second longitudinal beam is arranged parallel to the first longitudinal beam and is detachably connected to the first cross beam; both ends of the second cross beam are detachably connected to the first longitudinal beam and the second longitudinal beam respectively, and the second longitudinal beam is used for connecting with the inner wall of the nacelle.

[0012] A maintenance device for an offshore wind turbine provided by the present invention further includes a transport trolley, which is configured to be arranged on the platform and is used for transporting the component to be replaced.

[0013] A maintenance device for an offshore wind turbine provided by the present invention further includes a crane, which is configured to be arranged on the platform and is used for lifting a new component onto the transport trolley and lifting an old component off the transport trolley.

[0014] A maintenance device for an offshore wind turbine provided by the present invention further includes a transport ship, which is used for transporting the component to be replaced, and the crane is also used for lifting a new component on the transport ship onto the transport trolley and lifting the old component on the transport trolley onto the transport ship.

[0015] The maintenance device for an offshore wind turbine provided by the present invention can change the lifting force direction of the winch by arranging a hanging bracket and a guiding structure in the nacelle of the central column, and arranging a winch on the platform to transport the component to be replaced from the lower part of the nacelle, solving the problem that the wind turbine cannot be repaired after being installed on the central column, filling the gap in the self-operation and maintenance technology of the four-column floating wind turbine, reducing the operation and maintenance cost, and shortening the operation and maintenance time at the same time. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of a maintenance device for an offshore wind turbine generator provided by the present invention.

[0018] Figure 2 is Figure 1 a schematic structural diagram of the hanging support shown in

[0019] Reference numerals: 1. Hanging support; 2. Winch; 3. Tractor; 4. Transport trolley; 5. Crane; 6. Transport ship; 8. Transformer; 11. First cross beam; 12. First longitudinal beam; 13. Second cross beam; 14. Second longitudinal beam; 21. Steel wire rope; 31. Towing rope; 71. First pulley; 72. Second pulley; 73. Third pulley; 74. Hanging beam; 81. Base; 101. Central column; 102. Side column; 103. Platform. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention with reference to the drawings in the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present invention belong to the scope of protection of the present invention.

[0021] The following combines Figure 1 and Figure 2 to describe the maintenance device for an offshore wind turbine generator of the present invention.

[0022] As Figure 1 and Figure 2 shown, in the embodiment of the present invention, the maintenance device for an offshore wind turbine generator includes: a hanging support 1, a guiding structure, and a winch 2. The hanging support 1 is used to be arranged in the nacelle of the central column 101, the guiding structure is arranged on the hanging support 1, and the winch 2 is used to be arranged on the platform 103 formed by the central column 101 and the side column 102. The steel wire rope 21 of the winch 2 is wound around the guiding structure, and the winch 2 is used to lift the component to be replaced.

[0023] Specifically, the wind turbine generator is disposed on the central column 101. The hanging support 1 is arranged in the nacelle of the central column 101, and the winch 2 is located outside the nacelle. The steel wire rope 21 of the winch 2 extends into the nacelle and is wound around the guiding structure. In an alternative embodiment of the present invention, the guiding structure may be a fixed pulley. After the steel wire rope 21 is wound around the fixed pulley, it is connected to the component to be replaced. When the winch 2 winds and unwinds the rope, the component to be replaced can be lifted or lowered. In another alternative embodiment, the guiding structure may also be a pulley block composed of a fixed pulley and a movable pulley. After the steel wire rope 21 is wound around the fixed pulley and the movable pulley, it is connected to the hanging support 1. When the winch 2 winds and unwinds the rope, the component to be replaced can be lifted or lowered, and at the same time, the load on the winch 2 and the steel wire rope 21 can be reduced. It can be understood that the guiding structure may also be other forms of pulley blocks to guide the direction of the steel wire rope 21 or further reduce the load on the winch 2 and the steel wire rope 21.

[0024] When specifically replacing a component, first disassemble the faulty old component and lower it to the ground of the nacelle by the winch 2, and then the winch 2 lifts the new component to the wind turbine generator.

[0025] The maintenance device of the offshore wind turbine generator provided by the embodiment of the present invention can change the lifting force direction of the winch by arranging a hanging support and a guiding structure in the nacelle of the central column, and arrange a winch on the platform to transfer the component to be replaced from the lower part of the nacelle, solving the problem that the wind turbine generator cannot be repaired after being installed on the central column, filling the gap in the self-operation and maintenance technology of the four-column floating wind turbine generator, reducing the operation and maintenance cost, and shortening the operation and maintenance time at the same time.

[0026] It can be understood that in the embodiment of the present invention, the component to be replaced can be any component in the wind turbine generator. Hereinafter, the component to be replaced is a transformer 8 for illustration.

[0027] As Figure 2 shown, in an embodiment of the present invention, the guiding structure includes a first pulley 71. The first pulley 71 is connected to the hanging support 1. After the steel wire rope 21 is wound around the first pulley 71, it is connected to the transformer 8 to lower or lift the transformer. The first pulley 71 is used to guide the direction of the steel wire rope 21.

[0028] As Figure 2 shown, in another embodiment of the present invention, the guiding structure includes: a first pulley 71 and a second pulley 72. The first pulley 71 is connected to the hanging support 1, and the second pulley 72 is used to be connected to the transformer 8. After the steel wire rope 21 is wound around the first pulley 71 and the second pulley 72, it is connected to the hanging support 1. In this embodiment, by arranging the first pulley 71, the direction of the steel wire rope 21 can be guided, and by arranging the second pulley 72, the load on the winch 2 and the steel wire rope 21 can be reduced, reducing the material cost.

[0029] Further, the guiding structure further includes a third pulley 73. The third pulley 73 is connected to the hanging support 1. The steel wire rope 21 is sequentially wound around the third pulley 73, the first pulley 71, and the second pulley 72 and then connected to the hanging support 1. By arranging the first pulley 71 and the third pulley 73 to guide the running direction of the steel wire rope 21, the transformer 8 can be lifted to the wind turbine generator unit.

[0030] Further, the maintenance device of the offshore wind turbine generator unit further includes a hanging beam 74. The hanging beam 74 is connected to the rotating shaft of the second pulley 72, and the hanging beam 74 is used to lift the transformer 8.

[0031] As Figure 2 shown, in the embodiment of the present invention, the hanging support 1 includes: a first cross beam 11 and a first longitudinal beam 12. The first cross beam 11 and the first longitudinal beam 12 can be transported to the interior of the nacelle through the nacelle lifting opening or the elevator in the tower barrel, and then assembled in the nacelle. The first cross beam 11 is horizontally arranged and connected to the inner wall of the nacelle. The first longitudinal beam 12 is vertically arranged with respect to the first cross beam 11 and is detachably connected to facilitate disassembly when not in use. The first pulley 71 is arranged on the first cross beam 11, and the third pulley 73 is arranged on the first longitudinal beam 12.

[0032] In this embodiment, as Figure 1 shown, the wind turbine generator unit is located at the top of the central column 101, while the hoist 2 is located on the platform 103. There is a certain distance between the wind turbine generator unit and the hoist 2. Therefore, when installing the hanging support 1 in the nacelle, the hanging support 1 is installed on the upper part of the nacelle, so as to lift the transformer 8 to the wind turbine generator unit through the first pulley 71 and the third pulley 73 for replacing the transformer 8.

[0033] As Figure 2 shown, in the embodiment of the present invention, the hanging support 1 further includes: a second cross beam 13 and a second longitudinal beam 14. The second longitudinal beam 14 is arranged parallel to the first longitudinal beam 12 and is detachably connected to the first cross beam 11. Both ends of the second cross beam 13 are detachably connected to the first longitudinal beam 12 and the second longitudinal beam 14 respectively, and the second longitudinal beam 14 is used to be connected to the inner wall of the nacelle.

[0034] In this embodiment, the second cross beam 13 and the second longitudinal beam 14 can also be assembled with the first cross beam 11 and the first longitudinal beam 12 after being transported into the nacelle. By assembling the first cross beam 11, the first longitudinal beam 12, the second cross beam 13, and the second longitudinal beam 14 into a frame structure, the strength of the hanging support 1 can be improved, and the hanging support 1 can be prevented from being pulled down by the hoist 2 when lifting the transformer 8.

[0035] As Figure 1As shown, in an embodiment of the present invention, the maintenance device of the offshore wind turbine generator further includes a tractor 3. The tractor 3 is configured to be disposed on the platform 103, and the towing rope 31 of the tractor 3 is detachably connected to the transformer 8.

[0036] Specifically, when the winch 2 hoists or lowers the transformer 8, the towing rope 31 of the tractor 3 is connected to the transformer 8. The towing rope 31 is used to provide traction during the hoisting or lowering process of the transformer 8, preventing the transformer 8 from swaying during the hoisting or lowering process and ensuring the stable hoisting of the transformer 8. Optionally, when hoisting the transformer 8, the transformer 8 can be tied up with a steel wire rope, and both the hanging beam 74 and the towing rope 31 are connected to the steel wire rope.

[0037] As Figure 1 shown, in an embodiment of the present invention, the maintenance device of the offshore wind turbine generator further includes a transport trolley 4. During actual use, the old transformer is disassembled from the wind turbine generator, connected to the hanging beam 74, and the winch 2 pays out the rope to place the old transformer on the transport trolley 4. After the transport trolley 4 transports the old transformer away, the new transformer is transported to the hoisting position, the hanging beam 74 is connected to the new transformer 8, and the winch 2 takes in the rope to hoist the new transformer 8 to the wind turbine generator.

[0038] As Figure 1 shown, in an embodiment of the present invention, the maintenance device of the offshore wind turbine generator further includes a crane 5. The crane 5 is configured to be disposed on the platform 103 and is used to hoist the new transformer onto the transport trolley 4 and lift the old transformer off the transport trolley 4.

[0039] As Figure 1 shown, the maintenance device of the offshore wind turbine generator further includes a transport ship 6. The transport ship 6 is used to transport the new transformer to the vicinity of the platform. The crane 5 is also used to hoist the new transformer on the transport ship 6 onto the transport trolley 4 and lift the old transformer on the transport trolley 4 onto the transport ship 6.

[0040] The following details the usage method of the maintenance device of the offshore wind turbine generator provided by the embodiment of the present invention.

[0041] The first cross beam 11, the first longitudinal beam 12, the second cross beam 13 and the second longitudinal beam 14 are transported to the inside of the nacelle through the nacelle hoist opening or the elevator in the tower barrel and assembled inside the nacelle, so that the end of the first cross beam 11 and the second longitudinal beam 14 are fixed to the inner wall of the nacelle. A first pulley 71 is installed on the first cross beam 11, a third pulley 73 is installed on the first longitudinal beam 12. After the steel wire rope 21 of the winch 2 bypasses the third pulley 73, the first pulley 71 and the second pulley 72 in sequence, the steel wire rope 21 is fixed to the first cross beam 11.

[0042] Remove the connecting bolts of the base 81 of the transformer 8 and the rear frame of the nacelle, remove the cover plate of the lifting opening at the bottom of the old transformer, connect the lifting beam 74 to the old transformer, and connect the towing rope 31 to the base 81 of the transformer 8. The hoist 2 pays out the rope, and lowers the old transformer from the lifting opening to the transport trolley 4. The transport trolley 4 transports the old transformer to near the crane 5, and the crane 5 lifts it onto the transport ship 6.

[0043] The crane 5 lifts the new transformer from the transport ship 6 onto the transport trolley 4, and the transport trolley 4 transports the new transformer to the transformer lifting opening. The lifting beam 74 is connected to the new transformer, the towing rope 31 of the tractor 3 is connected to the base 81 of the transformer 8, and the hoist 2 lifts the new transformer 8 to the wind turbine generator set. Then, bolt-connect the new transformer to the rear frame of the nacelle.

[0044] The maintenance device of the offshore wind turbine generator set provided by the embodiment of the present invention does not need to rely on the crane on the operation and maintenance ship for component hoisting, and can be realized by the crane 5 on the platform 103, which greatly reduces the search cycle and usage cost of the ship; at the same time, there is no need to remove the top of the nacelle cover, and the components to be replaced are directly lowered from the inside of the nacelle, with simple construction technology and high safety.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A maintenance device for an offshore wind turbine generator set, characterized in that: include: Hanging brackets, guide structures and winches; The hanging bracket is used to be arranged in the cabin of the central column, the guide structure is arranged on the hanging bracket, and the hoist is used to be arranged on the platform formed by the central column and the side column; The steel wire rope of the hoist is wound around the guide structure, and the hoist is used to lift the component to be replaced.

2. The maintenance device for an offshore wind turbine generator set according to claim 1, characterized in that: The guide structure comprises a first pulley, and the steel wire rope is wound around the first pulley and then connected to the component to be replaced.

3. The maintenance device for an offshore wind turbine generator set according to claim 1, characterized in that: The guide structure comprises: a first pulley and a second pulley, wherein the first pulley is connected to the hanging bracket; The steel wire rope is wound around the first pulley and the second pulley and then connected to the hanging bracket. The second pulley is used to connect to the component to be replaced.

4. The maintenance device for an offshore wind turbine generator set according to claim 3, characterized in that: The guide structure also includes a third pulley, which is connected to the hanging bracket. The steel wire rope is sequentially wound around the third pulley, the first pulley and the second pulley and then connected to the hanging bracket.

5. The maintenance device for an offshore wind turbine generator set according to claim 1, characterized in that: It also includes a traction machine, which is used to be arranged on the platform, and a traction rope of the traction machine is detachably connected to the component to be replaced.

6. The maintenance device for an offshore wind turbine generator set according to claim 4, characterized in that: The hanging bracket comprises: a first cross beam and a first longitudinal beam, wherein the first cross beam is vertically arranged with the first longitudinal beam and is detachably connected; The first cross beam is used to be connected to the inner wall of the cabin, the first pulley is arranged on the first cross beam, and the third pulley is arranged on the first longitudinal beam.

7. The maintenance device for an offshore wind turbine generator set according to claim 6, characterized in that: The hanging bracket further comprises: a second cross beam and a second longitudinal beam, wherein the second longitudinal beam is arranged parallel to the first longitudinal beam and is detachably connected to the first cross beam; Two ends of the second cross beam are detachably connected to the first longitudinal beam and the second longitudinal beam respectively, and the second longitudinal beam is used to be connected to the inner wall of the cabin.

8. The maintenance device for an offshore wind turbine generator set according to claim 1, characterized in that: It also includes a transport trolley, which is used to be set on the platform and is used to transport the parts to be replaced.

9. The maintenance device for an offshore wind turbine generator set according to claim 8, characterized in that: It also includes a crane, which is used to be set on the platform and is used to lift new components onto the transport trolley and lift old components away from the transport trolley.

10. The maintenance device for an offshore wind turbine generator set according to claim 9, characterized in that: It also includes a transport ship, which is used to transport the parts to be replaced. The crane is also used to lift the new parts on the transport ship onto the transport trolley, and to lift the old parts on the transport trolley onto the transport ship.

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