KR20130128877A - Maintenance system for offshore wind generator and maintenance method for offshore wind generator - Google Patents

Abstract

A maintenance system and method of an offshore wind power generator is disclosed. The maintenance system of an offshore wind power generator according to an embodiment of the present invention is a maintenance system of an offshore wind power generator in which a tower is supported on a platform located above the sea level, and includes a first object on which a transfer object is installed. A lifting device for moving from a position to any second position below the platform; And a transfer device for slidingly moving the transfer object to a third position located on the deck of the ship approaching the offshore wind turbine at the second position.

Description

Maintenance system for offshore wind generator and maintenance method for offshore wind generator

The present invention relates to a maintenance system and method of an offshore wind turbine.

A wind power generator is a structure for converting wind energy into electric energy, and a plurality of blades which generally use wind energy, a hub connecting each blade, a nacelle including a gearbox and a generator, and a blade, a hub, and a nacelle It comprises a supporting tower.

Recently, wind power generators are installed on the sea with good location conditions. The process of developing this offshore wind turbine is as follows. When the blade rotates due to wind energy, the main shaft connected to the blade also rotates. The rotational force of the main shaft is transmitted to the generator via a gear box and the like, and the generator produces electric power. This power is transmitted via cable to a converter mounted below the tower. The power goes through a rectification process in the converter and is then sent to a land plant via a medium voltage transformer.

If a problem occurs with these transformers, they must be taken out of the tower for repair or replacement. To this end, conventionally involved the use of chain blocks to lift the transformer at the installation location, followed by the installation of separate moving equipment to take the transformer out of the tower.

The transformer was taken out of the tower and loaded onto the vessel using a crane mounted on the vessel approaching the offshore wind turbine. However, there is a problem that it may take a long time when the transformer is shipped at sea using a crane because the weather conditions must be considered.

Embodiments of the present invention seek to provide a maintenance system and method for an offshore wind turbine configured to quickly and effectively ship an object to be repaired or replaced on a ship.

According to an aspect of the present invention, a maintenance system of an offshore wind power generator, in which a tower is supported on a platform located above the sea level, wherein the transport object installed in the bottom of the tower is moved below the platform at a first position where the transport object is installed. An elevating device for moving to a second position; And a transport apparatus for slidingly moving the transport object to a third position located on the deck of the ship approaching the offshore wind turbine at the second position.

At this time, the elevating device, the lifting plate for supporting the transfer object when the transfer object moves from the first position to the second position; And it may include a driving unit for moving the lifting plate.

In this case, the driving unit may include a hydraulic cylinder or a winch.

At this time, when the drive unit includes a hydraulic cylinder, the hydraulic cylinder is made of a plurality, one end of each hydraulic cylinder is coupled to the corner of the lifting plate, the other end of each hydraulic cylinder can be coupled to the support bracket supported on the platform. have.

On the other hand, the object to be transported can be selectively fixed on the lifting plate and at the third position respectively.

On the other hand, the conveying apparatus includes a plurality of conveying rollers disposed along a moving path of the transformer between the second position and the third position, and some of the plurality of conveying rollers are disposed on the elevating plate to move together with the elevating plate. And supporting the object to be transported when the object to be transported is in the second position.

At this time, some of the plurality of transfer rollers may be disposed on the extension member extending in the second position direction from the vessel.

Alternatively, the conveying device comprises: a support member protruding from the vessel in a second position direction and retractable to the vessel; And a support roller disposed on the support member.

On the other hand, the transfer object may include a transformer or a switch panel.

According to another embodiment of the present invention, as a maintenance method of an offshore wind power generator in which a tower is supported on a platform located above the sea surface, the transfer object installed in the bottom portion of the tower may be disposed below the platform at the first position where the transfer object is installed. Moving to a second position of; And slidingly moving the object to be transported from the second position to a third position located on the deck of the ship approaching the offshore wind turbine. The maintenance method of the offshore wind turbine can be provided.

In this case, the transfer object may be selectively fixed on the support plate for supporting the transfer object in a process of moving from the first position to the second position, and selectively fixed on the third position.

According to the embodiment of the present invention, the lifting object can be quickly lowered from the first position to the second position, and the sliding object can be quickly and easily slidably moved from the second position to the third position, thereby as a whole. Shipment of the transport object to the ship for maintenance can be done quickly and effectively.

1 is a view showing a maintenance system of an offshore wind power generator according to an embodiment of the present invention,
FIG. 2 is a schematic view of a part of a maintenance system of an offshore wind power generator according to an embodiment of the present invention as viewed from the upper side of a first position;
3 is a schematic view of a part of a maintenance system of an offshore wind turbine generator according to an embodiment of the present invention as viewed from the top of a third position;
Figure 4 is a flow chart of the maintenance method of the offshore wind power generator according to an embodiment of the present invention,
5 to 7 is a view for explaining a maintenance method of the offshore wind power generator according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals, do.

1 is a view showing a maintenance system of an offshore wind power generator according to an embodiment of the present invention, Figure 2 is a portion of the maintenance system of an offshore wind power generator according to an embodiment of the present invention from the upper side of the first position 3 is a schematic view of a part of a maintenance system of an offshore wind turbine generator according to an embodiment of the present invention viewed from an upper side of a third position.

First, referring to FIG. 1, the maintenance system 1 of the offshore wind turbine generator according to the present embodiment includes a lifting device 10 and a transfer device 30, and a tower 83 of the offshore wind turbine generator 80. The transfer object 85 installed in the inner bottom portion is quickly and effectively transferred to the marine 90 approaching the offshore wind turbine 80.

Here, the offshore wind power generator 80 may have a form in which the tower 83 is supported on the platform 81 positioned above the sea surface. The platform 81 may, for example, be located on the jacket structure 87 supported on the sea bottom, but is not limited thereto.

The transfer object 85 may include, for example, but is not limited to, a transformer or a switch panel installed and operated at the inner bottom of the tower 83. The transfer object 85 may be transported for repair or replacement when a problem occurs during normal operation after being installed at the inner bottom portion of the tower 83.

The lifting device 10 moves the transfer object 85 from the first position P1 to the second position P2. The first position P1 is located inside the tower 83 to the position where the transfer object 85 is installed. The second position P2 may be any position below the platform 81, for example, below in the vertical direction of the first position P1.

The second position P2 may be determined by, for example, the height of the deck 91 of the vessel 90 approaching the offshore wind turbine 80 to ship the transfer object 85 to be replaced or repaired.

According to the present embodiment as described above, the conveying object 85 can be quickly lowered from the first position P1 to the second position P2 by the elevating device 10. In this case, a separate operation of moving the object to be transported 85 in the horizontal direction at the first position P1 and pulling it out of the tower 83 and then lowering it below the platform 81 by using an offshore crane (not shown) is omitted. The entire process of loading the transfer object 85 to the vessel 90 can be made simply and quickly.

The lifting device 10 may not operate when the transfer object 85 is in normal operation, but may operate when there is a problem with the transfer object 85 and needs replacement or repair. In this case, the transfer object 85 may be moved to the second position P2 by the elevating device 10 when a problem occurs while operating normally in a state fixed to the first position P1.

The lifting device 10 may include a lifting plate 11 and a driving unit.

The elevating plate 11 supports the transfer object 85 when the transfer object 85 moves from the first position P1 to the second position P2.

The elevating plate 11 may support the transfer object 85 at the first position P1 in a state of being disposed inside the through hole penetrating the platform 81 in the vertical direction. The transfer object 85 supported by the elevating plate 11 passes through the through hole when the elevating plate 11 descends.

The elevating plate 11 may be manufactured by using a cut portion of the platform 81 when the through hole is formed in the platform 81 or may be manufactured separately from the through hole.

A part 32 of the transfer roller 31 to be described later may be disposed on the elevating plate 11. In this case, the transfer object 85 may move from the first position P1 to the second position P2 together with the elevating plate 11 while being supported by a portion 32 of the transfer roller 31. The description will be described later.

The driving unit provides a driving force for moving the lifting plate 11. 1 and 2, the drive unit may include a hydraulic cylinder 12. The hydraulic cylinders 12 may be plural, and each hydraulic cylinder 12 may be installed at a corner of the elevating plate 11.

One end of the hydraulic cylinder 11 may be coupled to the support bracket 14 installed on the platform 81, and the other end of the hydraulic cylinder 11 may be coupled to the lifting plate 11.

Alternatively the drive may comprise a winch (not shown). In this case, the winch is fixedly installed on the support bracket 34 installed on the platform 81 to provide a driving force directly to the elevating plate 11 or a pulley installed on the support bracket 14 installed on the platform 81 (not shown). The driving force may be provided to the elevating plate 11 through c). In addition, various types of driving units may be proposed.

1 and 2, the transfer object 85 may be selectively fixed on the elevating plate 11. To this end, the first position fixing portion 21 may be used, and the first position fixing portion 21 penetrates the lifting support 23 and the lifting support 23 formed on the side surface of the transfer object 85 and the lifting plate. It may include a fixing bolt 24 for coupling to (11). In the first position fixing part 21 configured as described above, when the fixing bolt 24 is tightened, the transfer object 85 is fixed to the lifting plate 11, and when the fixing bolt 24 is loosened, the feeding to the lifting plate 11 is performed. The position fixing state of the object 85 may be released.

For example, when the transfer object 85 operates normally in the first position P1 or while the transfer object 85 moves to the second position P2, the transfer object 85 is placed on the elevating plate 11. Position can be fixed. When the transfer object 85 reaching the second position P2 moves to the third position P3, the position fixing state of the lifting plate 11 of the transfer object 85 may be released.

Alternatively, of course, various forms of the first position fixing may be proposed.

According to the present embodiment, the transfer device 30 slides the transfer object 85 from the second position P2 to the third position P3. The third position P3 is located on the deck 91 of the ship 90 approaching the offshore wind turbine 80 to ship the transfer object 85. The transfer object 85 may be moved to the land by the vessel 90 after the position is fixed at the third position P3. Alternatively, the transfer object 85 may be directly repaired on the ship in a state fixed in the third position P3. The third position P3 may be spaced apart from the second position P2 in the horizontal direction, but is not limited thereto.

The conveying apparatus 30 may include a plurality of conveying rollers 31 arranged along the movement path of the conveying object 85 between the second position P2 and the third position P3. In this case, the plurality of transfer rollers 31 may be continuously disposed along the movement path of the transfer object 85 to continuously move the transfer object 85. When the transfer object 85 moves from the second position P2 to the third position P3, a method of pushing the transfer object 85 using a hydraulic cylinder (not shown) or the like may be used, but is not limited thereto.

Alternatively, although not shown, the conveying device may include a conveying rail disposed along the movement path of the conveying object 85 between the second position P2 and the third position P3. In this case, a balance portion may be interposed between the transfer object 85 and the transfer rail, and the balance portion may slide along the transfer rail while supporting the transfer object 85. Of course, various types of transport apparatus can be proposed.

According to the present embodiment, some of the plurality of transfer rollers 31 may be disposed on the elevating plate 11. Thus, the roller 32 (henceforth a movement roller 32) arrange | positioned on the elevating plate 11 moves with the elevating plate 11. At this time, the moving roller 32 may be rotatably supported by the rotary support 17 installed on the elevating plate 11, as shown in FIG.

This moving roller 32 may support the transfer object 85 when the transfer object 85 is in the second position P2. Of course, the conveying roller 20 may support the conveying object 85 when the conveying object 85 is in the first position P1 and moves from the first position P1 to the second position P2, respectively. . To this end, the transfer object 85 may be installed while being supported by the moving roller 32 in the installation step of the offshore wind power generator (80).

According to the present embodiment as described above, since the transfer object 85 that descends below the platform 81 and reaches the second position P2 is already supported by the moving roller 32 belonging to the transfer roller 31. The object to be conveyed 85 can be slid and moved from the second position P2 to the third position P3 simply and easily.

When the transfer object 85 is in the second position P2, the moving roller 32 may be arranged in series with the rest 33 of the transfer roller 31. At this time, the movement roller 32 and the rest 33 may be configured so that a step does not occur in the movement path of the transfer object 85.

In addition, referring to FIG. 1, some of the transfer rollers 31 may be disposed on the extension member 40. The extension member 40 is a vessel 90 in the process of loading the transfer object 85 to the vessel 90, in particular in the process of moving the transfer object 85 from the second position (P2) to the third position (P3) This jacket structure 87 is used to prevent excessive access.

The extension member 40 may extend from the vessel 90 in the second position P2. The extension member 40 may be disposed to extend toward the second position P2 through the empty space of the lattice structure of the jacket structure 87 so as not to interfere with the jacket structure 87. Alternatively, the extension member 40 may be extended to the second position P2 through an opening (not shown) separately installed in the jacket structure 87 to facilitate the entry and exit of the extension member 40.

Alternatively, although not shown, the conveying device protrudes from the vessel 90 in the second position P2 and is supported by a support member (not shown) disposed on the support member (not shown) and retractable to the vessel 90 (not shown). May include). The support member may for example be advanced to protrude laterally of the deck 91 and may retract to the center side of the deck 91. The support member may have a plate shape and may slide on the deck 91 of the vessel 90. Such a transfer device can operate as follows. When the object to be conveyed 85 reaches the second position P2, the supporting member protrudes toward the elevating plate 11 side. Thereafter, the transfer object 85 is moved to the support member by using a hydraulic cylinder or the like. At this time, the transfer object 85 may be located on the support roller on the support member, and may be fixed on the support member. Thereafter, the supporting member is retracted to move the transfer object 85 to the third position P3.

1 and 3, the transfer object 85 reaching the third position P3 by the transfer roller 31 may be selectively fixed to the vessel 90, for which the second position height may be fixed. Government 22 may be used.

The second position fixing part 22 penetrates the protruding support part 23 and the protruding support part 23 formed at the side of the transfer object 85 and is fixed to the deck 91 of the ship 90 by the fixing bolt 24. It may include. In this case, when the fixing bolt 24 is tightened, the position fixing state of the transfer object 85 is maintained at the third position P3. When the fixing bolt 24 is released, the position of the transfer object 85 is held at the third position P3. The position fixing state can be released. Alternatively, various types of second position fixings may of course be proposed.

When the transfer object 85 is fixed in the third position P3, the ship 90 may move to the land or the like for replacement or repair in a state in which the transfer object 85 is shipped.

Alternatively, the transfer object 85 can be repaired directly on board once the position is fixed in the third position P3.

In the marine wind power generator maintenance system 1 according to the present embodiment described above, the transfer object 85 moves from the first position P1 to the third position P3 via the second position P2. The process can be made simple and continuous, so that the operation of shipping the transport object 85 requiring maintenance to the ship can be made quickly and effectively.

Figure 4 is a flow chart of the maintenance method of the offshore wind power generator according to an embodiment of the present invention, Figures 5 to 7 are views for explaining the maintenance method of the offshore wind power generator according to an embodiment of the present invention. Hereinafter, the method according to the present embodiment will be described with reference to FIGS. 4 to 7, but is not limited thereto based on the maintenance system 1 of the offshore wind turbine described above for convenience of description.

First, referring to FIGS. 4 and 5, when a problem occurs during normal operation of the transfer object 85 in the first position P1, the lifting object 85 is lifted to replace or repair the transfer object 85. In operation S110, the second position P2 is moved from the first position P1 to the second position P2 by the reference numeral 10. At this time, the transfer object 85 may be fixed to the lifting plate 11 before moving to the second position (P2). When the fixing of the position of the transfer object 85 is completed, the hydraulic cylinder 12 may be operated to move the lifting plate 11 to the second position P2. At this time, the second position (P2) may be located on the same horizontal plane as the third position (P3) located on the deck 91 of the vessel 90 approaching the offshore wind power generator 80, but is not limited thereto. Do not.

When the transfer object 85 moves to the second position P2 by the elevating device 10 as described above, the transfer object 85 is moved horizontally from the first position P1 and pulled out of the tower 83. After the separate operation of descending below the platform 81 by using an offshore crane (not shown) can be omitted so that the entire process of loading the transfer object 85 to the vessel 90 can be made simply and quickly.

4 and 6, the transfer object 85 that has reached the second position P2 by the elevating device 10 can be slidably moved to the third position P3 by the transfer roller 31. (S130). At this time, since the moving roller 32 of the conveying roller 31 is arrange | positioned at the elevating plate 11, and supports the conveying object 85, the conveying object which reached | attained the 2nd position P2 by the elevating apparatus 10. The 85 can be quickly moved to the third position P3.

Referring to FIG. 7, the transfer object 85 having reached the third position P3 by the transfer roller 31 may be fixed in position at the third position P3.

In this case, the transfer object 85 may move to the land or the like for replacement or repair in a state of being shipped to the vessel 90. When the ship 90 arrives on land or the like, the transport object 85 may be transported to the destination after the position fixing state of the transport object 85 is released at the third position P3.

Alternatively, the transfer object 85 can be repaired directly on board, with the position fixed at the third position P3.

Such a method according to this embodiment can quickly lower the transfer object 85 from the first position P1 to the second position P2 by the elevating device 10, and at the second position P2. By moving the transfer object 85 quickly to the third position P3, the movement is easy, so that the operation of loading the transfer object 85 to the ship 90 for maintenance as a whole can be performed quickly and effectively. .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, many modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

10: lifting device
11: lifting plate
12: Hydraulic cylinder
30: Feeding device
31: feed roller
32: feed roller
80: offshore wind power generator
81: platform
83: Tower
85: transfer object
87: Jacket Structure
90: ship
91: deck

Claims (11)

As a maintenance system for offshore wind power generators whose towers are supported on platforms located above sea level,
An elevating device for moving a transfer object installed in the inner bottom portion of the tower from a first position where the transfer object is installed to an arbitrary second position below the platform; And
And a transfer device for slidingly moving the transfer object to a third position located on a deck of the ship approaching the offshore wind generator at the second position.
The method of claim 1,
The lifting device,
A lifting plate which supports the transfer object when the transfer object moves from the first position to the second position; And
It characterized in that it comprises a drive unit for moving the lifting plate, maintenance system of the offshore wind power generator.
3. The method of claim 2,
The driving unit includes:
A maintenance system of an offshore wind turbine, characterized in that it comprises a hydraulic cylinder or a winch.
The method of claim 3,
When the drive unit includes the hydraulic cylinder,
The hydraulic cylinder is made of a plurality,
One end of each hydraulic cylinder is coupled to the corner portion of the lifting plate,
The other end of each hydraulic cylinder is coupled to a support bracket which is supported on the platform, maintenance system of the offshore wind turbine.
3. The method of claim 2,
And said transfer object is selectively fixed on said lifting plate and in said third position, respectively.
3. The method of claim 2,
The transfer device,
A plurality of transfer rollers disposed along the movement path of the transformer between the second position and the third position,
Some of the plurality of feed rollers,
It is disposed on the elevating plate and moving with the elevating plate, characterized in that for supporting the transfer object when the transfer object is in the second position, the maintenance system of the offshore wind turbine.
The method according to claim 6,
Some of the plurality of feed rollers,
It is disposed on the extending member extending in the second position direction from the vessel, the maintenance system of the offshore wind turbine.
3. The method of claim 2,
The transfer device,
A support member protruding from the vessel in the second position direction and retractable to the vessel; And
And a support roller disposed on the support member.
The method of claim 1,
The transport object is characterized in that it comprises a transformer or switch panel, offshore wind turbine maintenance system.
As a maintenance method of an offshore wind power generator whose tower is supported on a platform located above sea level,
Moving a transfer object installed in the inner bottom portion of the tower from a first position in which the transfer object is installed to any second position below the platform; And
Sliding the moving object from the second position to a third position located on the deck of the ship approaching the offshore wind turbine, the maintenance method of the offshore wind turbine
The method of claim 10,
The transfer object,
In the process of moving from the first position to the second position is selectively fixed on the support plate for supporting the transfer object,
And selectively fixed in position at the third position.

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