KR20140001043A - Rotor rotating apparatus for wind turbine - Google Patents

Abstract

A rotor rotating device for a wind turbine is disclosed. According to an embodiment of the present invention, the rotor rotating device for a wind turbine comprises a disk combining module detachably combined with a rotor lock disk using a plurality of disk holes on the flat surface of the rotor lock disk in the circumferential direction; and a module rotation part connected to the disk combining module to rotate the disk combining module.

Description

ROTOR ROTATING APPARATUS FOR WIND TURBINE}

The present invention relates to a rotor rotating apparatus for a wind turbine, and more particularly, to a rotor rotating apparatus for a wind generator capable of rotating a hub of the rotor.

Representative forms of power generation to produce electricity include fossil fuel-based thermal power generation and nuclear power generation using nuclear fission.

However, thermal power generation has a problem of enormous construction cost along with the problem of pollution caused by the use of energy generated by the combustion of fossil fuel.

Nuclear power generation is advantageous for producing a large amount of electricity, but it requires huge facility costs to block radiation leakage, as well as the strong resistance of local residents due to the risk of radiation leakage, and it is not easy to dispose of waste, and it is a minor accident. In addition, there are various problems such that there is always a risk that can cause serious environmental destruction.

Accordingly, studies are being actively conducted to use natural energy as wind energy, tidal power, hydro power, solar heat, and the like as a permanent energy source that can be freed and depleted from pollution problems caused by thermal power or nuclear power generation.

In particular, wind power is emerging as an alternative in terms of the use of natural energy among power generation using natural energy. Wind power generation is simple in structure and installation, easy to operate and manage, and unmanned and automated. As a result, the introduction has increased dramatically in recent years.

On the other hand, in the past, wind power structures were mainly made on land, but due to various problems such as environmental damage caused by noise and vibration, increased power generation capacity, and aesthetics and location constraints, wind farms have recently been intensive. The trend is to build them in groups.

Wind power generator is a device for producing electrical energy from the rotational energy by the wind, a rotor having a hub (hub) is connected to a plurality of blades (blade) rotated by the wind, and a nacelle connected to the rotor ( and a nacelle cover for supporting and protecting the nacelle, and a tower for supporting the blades, the rotor, the nacelle, and the nacelle cover.

On the other hand, the operation of installing the blade in the hub, the blade is gripped by using a separate blade gripping device, and then proceeds while using the crane to enter the blade gripped to the blade gripping device to the hub.

Looking at the case of sequentially installing a plurality of blades, that is, three in the hub in this way, first, one blade is installed on one side of the hub by the above method. Next, rotate the hub in the direction that the blade enters so that the second blade can be installed on the other side of the hub. Then, enter the second blade and install it. In the same way, rotate the hub and install the third blade. The installation can be completed.

At this time, when the hub is to be rotated in the direction of entering the blade, the following method has been conventionally used.

That is, in the prior art, after connecting the inching gear on the gearbox connected to the rotating shaft that is interlocked with the hub and the high speed rotating shaft connecting the generator driven by the rotational force of the rotating shaft transmitted from the gearbox, the inching gear The hub was rotated in the reverse direction by forcibly rotating it. Here, the inching gear is a device for forcibly rotating the rotary shaft, and refers to a gear mounted on the rotary shaft to be rotated by a separately provided drive motor.

However, in this case, if the high speed rotation shaft is forcibly rotated using the inching gear, that is, when the driven gear connected to the driven shaft inside the gearbox is rotated to rotate the main gear connected to the main shaft, the driven gear may be damaged. Problems may occur.

Republic of Korea Patent No. 10-0988920

Therefore, the technical problem to be achieved by the present invention is a simple yet efficient structure that can easily rotate the hub of the rotor to solve the problem of gear damage as before, and furthermore, a rotor for a wind power generator that can improve the efficiency of installation work of the blade It is to provide a rotating device.

According to an aspect of the present invention, a disk coupling module detachably coupled to the rotor lock disk using a plurality of disk holes formed along the circumferential direction of a rotor lock disk plate; And a rotor rotating device connected to the disk coupling module, the module rotating unit rotating the disk coupling module.

The disk coupling module includes a module body; And at least one insertion protrusion protruding from the module body and inserted into the disc hole of the rotor lock disk.

The module body may be an arc module body or a disc module body.

The module rotating unit, the winding drum; And one end may be fixed to the winding drum is wound on the winding drum and the other end may include a wire connected to the disk coupling module.

The disk coupling module may further include a protruding boss for a wire guide formed to protrude from the module body to the opposite side of the insertion protrusion and partially guided by the wire.

The wire may be arranged to be in and out of the nacelle cover through a wire through hole formed in a nacelle cover forming the exterior of the rotor lock disk.

The module rotating unit may include: a drum actuator connected to the winding drum to rotate the winding drum in a forward or reverse direction; A hub position sensor for detecting a position of the hub; And a controller for controlling the operation of the drum actuator based on information from the hub position sensor.

The disc coupling module may further include a rocker for locking the top insertion protrusion inserted into the disc hole on the opposite side of the rotor lock disc.

According to the present invention, it is possible to easily rotate the hub of the rotor as a simple and efficient structure to solve the problem of gear damage as before, and further improve the installation work efficiency of the blade.

1 is a front view of a wind turbine, showing a state in which one blade is transferred.
Figure 2 is a perspective view of the rotor rotating device for a wind turbine generator according to the first embodiment of the present invention coupled to the rotor lock disk.
3 is a perspective view of the hub removed from FIG.
4 is an exploded perspective view of FIG.
5 is a rear perspective view of FIG. 4.
6 is a control block diagram of the rotor rotating apparatus for a wind turbine shown in FIG.
7 is a perspective view of a state in which the rotor rotating apparatus for a wind turbine according to the second embodiment of the present invention is coupled to a rotor lock disk.
8 is an exploded perspective view of Fig.
FIG. 9 is a partial side structural view of the wind turbine rotor rotating apparatus according to the third embodiment of the present invention coupled to the rotor lock disk.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

1 is a front view of a wind turbine, showing a state in which one blade is transported, Figure 2 is a perspective view of a wind turbine rotor rotating apparatus according to a first embodiment of the present invention coupled to the rotor lock disk .

1 and 2, the wind turbine is connected to a nacelle (not shown) and rotates according to the rotation of the blades 110 and the blades 110, which are rotated by the wind blades 110. ) Includes a rotor (120) having a hub (121) to which it is connected, and a tower (101).

The nacelle receives the rotational motion of the blade 110 to produce electrical energy, such as the rotating shaft 151 and the rotating shaft connected to the mechanical parts, such as the hub 121, which play an important role in driving the wind power generator. 151 is connected to the gear box 156, a structure including a generator 157 is provided on one side of the gear box 156, driven by the rotational force of the rotary shaft 151 transmitted from the gear box 156 Collectively called.

The nacelle cover 130 is coupled to the outside of the nacelle to protect the nacelle. Since the nacelle cover 130 is exposed to the outside air as it is, it is always exposed to snow, rain or sunlight, so that some degree of rigidity must be ensured. Therefore, the nacelle cover 130 is made of a non-metal or metal composite material with excellent durability.

Blade 110 is a kind of wing that is rotated by the wind to generate a rotational movement. The blade 110 disposed radially with respect to the rotor 120 has a streamlined wing shape to be easily rotated by the wind.

The wind power generator according to the present embodiment includes three blades 110 so as to pursue stability while maximizing the characteristics of the wind, but is not limited thereto. The scope of the present invention is limited by the number of blades 110. It doesn't work.

The hub 121 of the rotor 120 is a place where a plurality of blades 110 are connected. The hub 121 may have a substantially circular shape when viewed from the front, and may have a dome shape when viewed from the side. One side of the hub 121 is connected to the nacelle described above.

The tower 101 is a shaft that is vertically disposed up and down, and supports axial loads on structures such as the plurality of blades 110, the hub 121, the nacelle and the nacelle cover 130.

The tower 101 is a hollow pipe-like structure, and a cable or the like is passed through the inner empty space of the tower 101. The cable may be various kinds of cables including power cables for power transmission, cables for communication, and the like.

In the structure of such a wind turbine, as shown in FIG. 1, a brief description will be given of the operation of installing a plurality of blades 110 in the hub 121 of the rotor 120.

First, after gripping the blade 110 with the gripping unit 140, one blade 110 is transferred adjacent to the hub 121.

Here, the gripping unit 140 may include a root gripper 141 for gripping the blade root and a tip gripper 142 for gripping the blade tip.

After one blade 110 is installed in the blade connecting portion 123 of the hub 121, the hub 121 is rotated to maintain the blade connecting portion 123 of the hub 121 in a horizontal state.

Then, install the second blade 110 by entering, and in the same way by rotating the hub 121 to install the third blade 110, the installation work of the blade 110 can be completed.

When the blade 110 is installed during the installation process, there is a task of rotating the hub 121. In rotating the hub 121, the main gear (not shown) provided in the gear box 156 in the case of rotating the hub 121 by forcibly rotating the inching gear by attaching an inching gear as in the prior art; The driven gear (not shown) may be damaged.

Therefore, the main gear and the driven gear in the gearbox 156 is not damaged, a means for easily rotating the hub 121 of the rotor 120 as a simple and efficient structure is required, which is the wind power of this embodiment The rotor rotor 170 for the generator is in charge.

FIG. 3 is a perspective view of the hub removed from FIG. 2, FIG. 4 is an exploded perspective view of FIG. 3, FIG. 5 is a rear perspective view of FIG. 4, and FIG. 6 is a control block diagram of the rotor rotating device for a wind turbine shown in FIG. 2. to be.

2 to 6, the rotor rotation apparatus 170 for the wind power generator of the present embodiment, when trying to install the blade 110 to the hub 121 of the rotor 120, as shown in Figure 1, in a different manner than conventional As for rotating the hub 121, the disk coupling module 180 and the module rotating unit 190 is included.

Prior to the description of the disk coupling module 180, a rotor lock disk 160 will be described.

The rotor lock disc 160 is provided inside the nacelle cover 130 and is connected to the rotary shaft 151.

The rotor lock disk 160 is rotated in conjunction with the hub 121 and the rotating shaft 151, and the hub 121 and the rotating shaft when the wind turbine is being repaired or when the blade 110 is installed and replaced in the hub 121. 151 serves to fix.

As described above, in order to install the blade 110 in the hub 121, the hub 121 needs to be rotated. The rotor rotating device 170 for the wind turbine generator according to the present embodiment is different from the conventional rotor lock disk 160. ), The hub 121 is rotated.

In this case, there is no need to use a complicated inching gear as in the prior art, and the problem of gear damage can also be naturally solved.

Rotor lock disc 160 may be selectively constrained by clamp 162. A plurality of disk holes 161 are formed in the plate surface of the rotor lock disk 160 along its circumferential direction.

The disk hole 161 is a hole generally formed in the rotor lock disk 160 and is not intentionally formed to use the rotor rotating apparatus 170 for a wind power generator according to the present embodiment.

On the other hand, the disk coupling module 180 is a part detachably coupled to the rotor lock disk 160.

The disc coupling module 180 includes a module body 181, a plurality of insertion protrusions 182 protruding from the module body 181, and inserted into the disc holes 161 of the rotor lock disc 160. It is formed to protrude to the module body 181 on the opposite side of the 182, and includes a wire guide protrusion boss 183 for the wire 192 of the module rotation part 190 is partially guided.

In this embodiment, the module body 181 is applied as an arc-shaped module body 181 rather than a complete circular shape. The arc module body 181 may have a trajectory smaller than a semicircle.

A plurality of insertion protrusions 182 are disposed along the circumferential surface of the arc module body 181. Although one insertion protrusion 182 may be provided, a plurality of insertion protrusions 182 may be provided and inserted into the disc hole 161, as in the present embodiment, which may be advantageous in providing a large torque.

In this case, the spacing of the insertion protrusions 182 may be provided to be the same as the spacing of the disk holes 161. Of course, since the arc-shaped module body 181 is not circular, the number of insertion protrusions 182 is smaller than the number of disk holes 161.

The wire guide protrusion boss 183 is a part in which the wire 192 of the module rotating part 190 is partially guided, and a wire holder 184 for fixing the wire 192 of the module rotating part 190 is provided at one side thereof. do.

The module rotating unit 190 is connected to the disk coupling module 180, and serves as a drive for rotating the disk coupling module 180.

The module rotating unit 190 may be applied as a so-called winch. That is, the module rotating unit 190 includes a winding drum 191 and a wire 192.

The wire 192 has one end fixed to the winding drum 191 and wound around the winding drum 191, and the other end is guided to the wire guide protrusion boss 183 of the disc coupling module 180, followed by the wire holder 184. It is fixed to).

Accordingly, when the winding drum 191 is rotated in the forward or reverse direction, the wire 192 is wound or unwound to interlock with the operation of the winding drum 191 to rotate the rotor lock disc 160 while the disc coupling module 180 is rotated. Rotational movement of the hub 121 may be implemented.

The wire 192 may enter and exit the nacelle cover 130 through a wire through hole 131 formed at the bottom of the nacelle cover 130.

On the other hand, in the case of a small wind power generator may be considered to rotate the winding drum 191 by hand.

However, in the case of a large wind turbine, since the tower 101 is a huge structure of about 100 meters, it is impossible to manually rotate the winding drum 191 for the rotational movement of the hub 121 applied to the wind turbine. Do.

Accordingly, the module rotating unit 190 includes a drum actuator 193, a hub position detecting unit 194 and a controller 195.

The drum actuator 193 is connected to the winding drum 191 and serves to rotate the winding drum 191 in the forward or reverse direction. The hub position detector 194 detects how much the hub 121 should be rotated. Since the hub position detecting unit 194 according to the present embodiment may be configured by combining a known sensor for detecting a position, detailed description thereof will be omitted.

The controller 195 controls the operation of the drum actuator 193 based on the information from the hub position sensor 194.

The controller 195 performing this role may include a central processing unit 195a (CPU), a memory 195b (MEMORY), and a support circuit 195c (SUPPORT CIRCUIT).

The central processing unit 195a may be one of various computer processors that may be industrially applied to control the operation of the drum actuator 193 based on information from the hub position sensor 194 in this embodiment. The memories 195b and MEMORY are connected to the central processing unit 195a. The memory 195b is a computer readable recording medium which can be installed locally or remotely, and is readily available, such as, for example, random access memory (RAM), ROM, floppy disk, hard disk or any digital storage form. At least one or more memories. A support circuit 195c (SUPPORT CIRCUIT) is combined with the central processing unit 195a to support typical operation of the processor. Such support circuit 195c may include a cache, a power supply, a clock circuit, an input / output circuit, a subsystem, and the like.

In this embodiment, a series of processes and the like for controlling the operation of the drum actuator 193 based on the information from the hub position detecting unit 194 may be stored in the memory 195b. Typically software routines may be stored in memory 195b. The software routines may also be stored or executed by other central processing units (not shown).

Although the process according to this embodiment has been described as being executed by a software routine, it is also possible that at least some of the processes of this embodiment are performed by hardware. As such, the processes of the present embodiment may be implemented by software executed on a computer system, or by hardware such as an integrated circuit, or by a combination of software and hardware.

By this configuration, the disk coupling module 180 is coupled to the rotor lock disk 160 while allowing the plurality of insertion protrusions 182 to be inserted into the disk holes 161 of the rotor lock disk 160, and the hub 121. Rotating the winding drum 191 in the forward direction based on the position of, for example, when the wire 192 is wound in the direction A of FIG. 2, the disk coupling module 180 is rotated while interlocking with the operation of the rotor lock disk 160. It is to rotate, through which the rotational motion (see B of FIG. 2) of the hub 121 can be implemented.

In this case, there is no need to use a complicated inching gear as in the prior art, and the problem of gear damage can also be naturally solved.

As described above, according to the present exemplary embodiment, the hub 121 of the rotor 120 may be easily rotated as a simple and efficient structure, thereby solving the problem of gear damage, and further improving the installation efficiency of the blade 110. You can do it.

FIG. 7 is a perspective view of a rotor rotating apparatus for a wind turbine according to a second embodiment of the present invention coupled to a rotor lock disk, and FIG. 8 is an exploded perspective view of FIG. 7.

Referring to these drawings, the rotor rotation apparatus 270 for a wind power generator of the present embodiment also includes a disk coupling module 280 and the module rotation unit 190.

In the case of this embodiment, the structure of the disc coupling module 280 is slightly different from the above-described embodiment. That is, in the present embodiment, the disk coupling module 280 protrudes from the disk module body 281 and the disk module body 281 and the plurality of insertion protrusions 282 inserted into the disk holes 161 of the rotor lock disk 160. And a wire guide protrusion boss 283 formed to protrude to the disc-shaped module body 281 on the opposite side of the insertion protrusion 282 and to which the wire 192 of the module rotating unit 190 is partially guided. A wire holder 284 fixing the wire 192 of the module rotating unit 190 is also provided on the wire guide protrusion boss 283.

Thus, even if the disk module body 281 different from the above-described embodiment is applied, there is no problem in providing the effect of the present embodiment.

FIG. 9 is a partial side structural view of the wind turbine rotor rotating apparatus according to the third embodiment of the present invention coupled to the rotor lock disk.

Referring to this figure, the disk coupling module 380 of this embodiment also includes a plurality of inserts protruding from the module body 381 and the disk holes 161 of the rotor lock disk 160 protruding from the module body 381. Protrusion 382, and protruding boss 383 for the wire guide is formed to protrude to the module body 381 on the opposite side of the insertion projection 382, the wire 192 of the module rotation part 190 is partially guided do. A wire holder 384 for fixing the wire 192 of the module rotating part 190 is also provided on the wire guide protrusion boss 383.

In addition to this, the disk coupling module 380 of the present embodiment includes a plurality of lockers for locking the insertion protrusions 382 inserted into the disk holes 161 of the rotor lock disk 160 on the opposite side of the rotor lock disk 160. 385).

As such, when the rocker 385 locks the insertion protrusions 382 inserted into the disk holes 161 on the opposite side, the disk coupling module 380 randomly rotates the rotor lock disk 160 during the installation of the blade 110. Falling out can be prevented.

Here, for the configuration of the insertion protrusions 382 and the rocker 385, a variety of configurations can be applied to a known configuration, the detailed description thereof will be omitted.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

101: Tower 110: Blade
120: rotor 121: hub
123: blade connection 130: nacelle cover
140: gripping unit 151: rotary shaft
156: gearbox 157: generator
160: rotor lock disc 161: disc hole
162: Clamp 170: Rotor rotating device for wind power generator
180: disc coupling module 181: module body
182: insertion protrusion 183: projecting boss for wire guide
184: wire holder 190: module rotation
191: winding drum 192: wire
193: Drum Actuator 194: Hub Position Detection
195: controller

Claims (8)

A disk coupling module detachably coupled to the rotor lock disk using a plurality of disk holes formed along a circumferential direction of a rotor lock disk plate; And
The rotor rotating device for a wind turbine coupled to the disk coupling module, comprising a module rotating unit for rotating the disk coupling module. The method of claim 1,
The disk coupling module,
Module body; And
Rotor rotating device for a wind turbine comprising at least one insertion protrusion protruding from the module body is inserted into the disk hole of the rotor lock disk. 3. The method of claim 2,
Wherein the module body is an arc (arc) type module or disk-shaped module rotor rotor rotation apparatus for a wind turbine. 3. The method of claim 2,
The module rotating unit,
Winding drum; And
One end is fixed to the winding drum is wound on the winding drum and the other end is a rotor for a wind turbine comprising a wire connected to the disk coupling module. 5. The method of claim 4,
The disk coupling module,
It is formed to protrude to the module body on the opposite side of the insertion projection, the rotor rotor for a wind turbine further comprises a wire guide protrusion boss for the wire is partially guided. 5. The method of claim 4,
The wire is a rotor rotor for a wind turbine is disposed to be entered into and out of the nacelle cover through a wire through hole formed in the nacelle cover (nacelle cover) forming the appearance of the rotor lock disk. 7. The method according to any one of claims 4 to 6,
The module rotating unit,
A drum actuator connected to the winding drum to rotate the winding drum in a forward or reverse direction;
A hub position sensor for detecting a position of the hub; And
And a controller for controlling the operation of the drum actuator based on information from the hub position sensing unit. The method according to any one of claims 2 to 6,
The disk coupling module,
And a rocker for locking the insertion protrusion inserted into the disk hole on the opposite side of the rotor lock disk.

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