KR102164296B1 - Rotor locking apparatus for wind turbine - Google Patents

Abstract

The present invention relates to a rotor locking device for a wind power generator, including: a tower; a nacelle installed on the top of the tower; a rotor that has a plurality of blades rotationally installed and is installed at one end of the nacelle; a rotor lock disk that is installed in the rotor among the facing portions of the rotor and the nacelle, rotates together with the rotor, and has a plurality of through holes in a part thereof; a main frame installed on the nacelle; and a fixing unit that is installed on the main frame and restricts or allows rotation of the rotor as the head of the insertion unit is inserted into or withdrawn from the through hole of the rotor lock disk by the operation of the driving unit.

Description

Rotor locking apparatus for wind turbine}

The present invention relates to a rotor locking device for a wind turbine and a control method thereof, and more particularly, a link part of a fixing unit is pivotably connected to the main body by a forward/reverse motion of a driving part, and a linear reciprocation by a pivoting operation of the link part It is possible to improve reliability and safety by limiting or allowing the rotation of the rotor through a link structure such as a movably installed rod part and an insertion part to reduce or allow the rotation of the rotor, reduce manufacturing cost, and prevent safety accidents in advance. It relates to a rotor locking device for a wind turbine and a control method thereof.

As fossil fuels are recognized as the cause of global warming, international movements to reduce the use of fossil fuels are becoming active, such as penalizing countries with large amounts of fossil fuels. Recently, fossil fuels are recycled or renewable energy is being used. Renewable energy converted and used is in the spotlight as an alternative resource. Unlike fossil fuels, new and renewable energy is not depleted because it can be recycled, and has the advantage of being eco-friendly because it emits less pollutants or carbon dioxide.

Types of renewable energy include geothermal energy, tidal energy, bio energy, solar energy, and wind energy. Among them, wind power, a power generation method that uses wind energy, converts wind power into mechanical energy. It refers to a method of generating electricity by turning a generator with mechanical energy.

In general, a wind power generator includes a tower installed on the ground or sea level, a nacelle installed on the tower, and a rotor installed on one side of the nacelle. Blades are rotatably installed in such a rotor to generate power from a generator as the blades rotate by wind.

When installing, transporting, or maintaining and repairing wind turbines, the relevant work must be performed while the rotor is fixed so that the rotor does not rotate. This is to prevent damage or damage or safety accidents caused by rotation of the rotor in advance.

As such, a conventional rotor locking device has been proposed in order to limit the rotation of the rotor.

The rotor of a wind turbine is a large structure, and to prevent rotation of the rotor, the rotor locking or unlocking is achieved simply through the forward and backward motion of a reciprocating piston (Korean Patent Registration Publication No. 10-0821704, Wind Generator with a Rotor Locking Structure).

However, the conventional rotor locking device for a wind turbine and its control method is a device that is simply driven by a reciprocating, forward and backward motion of a piston, considering that the rotor is a fairly large structure, and a plurality of rotor locking devices are used to implement locking or unlocking of the rotor. As it has to be installed, the manufacturing cost increases, and the system for controlling it is complicated, and there is a problem that many malfunctions occur.

In addition, the conventional rotor locking device for a wind turbine and its control method is to increase the size of the piston when the rotor locks or unlocks through the forward and backward motion of the reciprocating piston. There is a problem that it is not possible to miniaturize the generator, and the overall weight increases as a large number of piston devices are used, making maintenance difficult.

Moreover, the conventional rotor locking device and its control method for a wind turbine are operated by a simple reciprocating motion of a piston, and the rotor is unlocked in case of some malfunctions, resulting in damage to the rotor or a safety accident, reducing reliability, and shortening the lifespan. There was a problem.

In addition, the conventional rotor locking device for a wind turbine and its control method has a problem in that it is not easy to detect the operation in the locked or unlocked state, causing inconvenience to the user or operator, and reducing the stability.

Korean Patent Registration Publication No. 10-0821704 Korean Patent Publication No. 10-2013-0137938 Korean Patent Registration Publication No. 10-1524157

The present invention is to solve the above problems, and an object of the present invention is to enable the link part of the fixed unit to be pivotably connected to the main body by the forward and backward motion of the driving part, and to enable linear reciprocating movement by the turning operation of the link part. Rotor locking device for wind turbines and its control to minimize the number of installations by limiting or permitting the rotation of the rotor through the link structure such as the installed rod part and the insertion part, thereby minimizing the number of installations and reducing manufacturing costs. To provide a way.

In addition, another object of the present invention is not simply locking/unlocking the rotor according to the reciprocating movement of the piston through the link structure, but locking or unlocking the rotor by the operating principle of the link structure. It is to provide a rotor locking device for a wind turbine and a control method thereof that can improve reliability and safety by preventing safety accidents in advance.

Moreover, another object of the present invention is to minimize the number of installations of the rotor locking device through a link structure, thereby reducing maintenance time and cost, promoting the convenience of workers, and increasing the life of the wind turbine. It is to provide a rotor locking device for aircraft and a control method thereof.

The rotor locking device for a wind turbine according to the present invention in order to achieve the object of the present invention is a tower; A nacelle installed on the tower; A rotor having a plurality of blades rotatably installed and installed at one end of the nacelle; A rotor lock disk installed in the rotor among portions facing the rotor and the nacelle, rotating together with the rotor, and having a plurality of through holes in a portion thereof; A main frame installed on the nacelle; And a fixing unit installed on the main frame and restricting or allowing rotation of the rotor as the head of the insertion unit is inserted into or extracted from the through hole of the rotor lock disk by the operation of the driving unit.

In addition, in another preferred embodiment of the rotor locking device for a wind turbine according to the present invention, the rotor locking device for a wind turbine further includes a control unit for controlling the operation of the driving unit, wherein the fixing unit penetrates the rotor lock disk. It may be installed in plurality on the main frame to correspond to the position of the ball.

In addition, in another preferred embodiment of the rotor locking device for a wind power generator according to the present invention, the fixing unit of the rotor locking device for a wind power generator is formed at the other end of the horizontal plate and a pair of horizontal plates spaced apart from and facing each other. A body portion having a vertical plate and fixedly installed on the main frame portion; A driving unit provided with a housing unit and a cylinder unit installed in the interior of the housing unit so as to be able to move forward and backward, and is rotatably installed on one side of the body unit; A link unit having one end connected to the driving unit and the other end pivotally coupled to the other side of the body unit by the operation of the driving unit; A rod portion having one end connected to the link portion and linearly reciprocating by a turning operation of the link portion; And an insertion portion having a joint portion extending at one end of the head portion, the joint portion being connected to the other end of the rod portion, and linearly reciprocating in association with the linear reciprocating movement of the rod portion.

In addition, in another preferred embodiment of the rotor locking device for a wind power generator according to the present invention, the fixing unit of the rotor locking device for a wind power generator senses a pull-in state or a pull-out state in the through hole of the head part according to the operation of the driving part. A sensing unit configured to transmit a sensing result to the control unit; And a fixing pin for detachably coupling the main body part and the driving part, the main body part and the link part, the link part and the rod part, the link part and the driving part, and the rod part and the insertion part. can do.

In addition, in another preferred embodiment of the rotor locking device for a wind turbine according to the present invention, one side of the sensing unit of the fixing unit of the rotor locking device for a wind turbine is coupled to a receiving portion formed concave at one end of the head, and the rod A dog portion extending parallel to the portion; A guide portion extending from an upper portion of the horizontal plate to contact the vertical plate so as to prevent separation of the dog portion; And a sensing unit coupled to one end of the guide unit to detect a positional state of the dog unit.

In addition, in another preferred embodiment of the rotor locking device for a wind turbine according to the present invention, the vertical plate of the main body of the fixing unit of the rotor locking device for a wind turbine includes a guide hole formed through the vertical plate, and The dog part may be pulled out or pulled into the guide hole by interlocking with the pulling in or pulling out of the through hole of the head part according to the operation of the driving part.

Further, in another preferred embodiment of the rotor locking device for a wind turbine according to the present invention, the housing portion of the fixing unit of the rotor locking device for a wind turbine is formed on one side of the horizontal plate based on the vertical center line of the horizontal plate. It is connected to the ball, and the link part is connected to a coupling hole formed on the other side of the horizontal plate with respect to the vertical center line of the horizontal plate, and the pivot hole of the link part is connected, and the fixing hole and the coupling hole are the vertical center line of the horizontal plate. It may be formed on the horizontal plate to face each other diagonally on the basis of.

Further, in another preferred embodiment of the rotor locking device for a wind turbine according to the present invention, the cylinder portion of the fixing unit of the rotor locking device for a wind turbine is connected to a connecting hole formed on one side of the link portion, and the rod portion A mounting hole formed at one end may be connected to a connect hole formed at one side of the other end of the link part, and a fastening hole formed at the other end of the rod part may be connected to the joint part.

Further, in another preferred embodiment of the rotor locking device for a wind turbine according to the present invention, the turning hole and the connecting hole of the fixing unit of the rotor locking device for a wind turbine are formed to be spaced apart from each other along the horizontal direction of the link part, and the The turning hole and the connect hole may be formed to be spaced apart from each other along the vertical direction of the link part.

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The rotor locking device for a wind turbine according to the present invention and a control method thereof include a rod that is pivotably connected to the main body by a forward and backward motion of a driving unit, and is installed to enable linear reciprocation by a pivoting operation of the link unit. There is an effect of minimizing the number of installations by limiting or allowing the rotation of the rotor through a link structure such as a part and an insertion part, thereby minimizing the wind power generator and reducing manufacturing cost.

In addition, the rotor locking device for a wind turbine according to the present invention and a control method thereof are not simply locking/unlocking of the rotor according to the reciprocating movement of the piston through the link structure, but locking or unlocking the rotor by the operating principle of the link structure. Thus, there is an effect of improving reliability and safety by preventing a safety accident in advance by fundamentally preventing the rotor lock from being released.

Moreover, the rotor locking device for a wind turbine and a control method thereof according to the present invention minimizes the number of installation of the rotor locking device through a link structure, thereby reducing maintenance time and cost, promoting the convenience of the operator, and the life of the wind turbine. There is an effect that can increase.

1 is a conceptual diagram of a wind turbine having a rotor locking device for a wind turbine according to the present invention.
Figure 2 shows a partial perspective view of the rotor locking device for a wind turbine according to the present invention.
3 shows a layout view of a rotor lock disk, a main frame, and a fixing unit in an unlocked state of the rotor locking device for a wind turbine according to the present invention.
4 shows a layout view of a rotor lock disk, a main frame, and a fixing unit in a locking state of the rotor locking device for a wind turbine according to the present invention.
5 is a perspective view of a fixing unit of the rotor locking device for a wind turbine according to the present invention in an unlocked state.
6 is a perspective view of the fixing unit of the rotor locking device for a wind turbine according to the present invention in a locked state.
7 is an exploded perspective view of the fixing unit of the rotor locking device for a wind turbine according to the present invention.
8 shows an enlarged view of part A of FIG. 3.
9 shows an enlarged view of part B of FIG. 4.
10 is a flowchart illustrating a method of controlling a rotor locking device for a wind turbine according to the present invention.

Hereinafter, with reference to the drawings of a rotor locking device for a wind turbine and a control method thereof according to an embodiment of the present invention will be described in detail. The following embodiments are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. In addition, in the drawings, the size and thickness of the device may be exaggerated for convenience. Throughout the specification, the same reference numbers indicate the same elements.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only the present embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have it, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification. In the drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity of description.

The terms used in this specification are for describing exemplary embodiments, and therefore, are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprise" and/or "comprising" refers to the presence of one or more other components, steps, actions and/or elements, and/or elements, steps, actions and/or elements mentioned. Or does not exclude additions.

1 shows a conceptual diagram of a wind turbine having a rotor locking device for a wind turbine according to the present invention, and FIG. 2 is a partial perspective view of a rotor locking device for a wind turbine according to the present invention. 3 shows a layout view of a rotor lock disk, a main frame, and a fixing unit in an unlocked state of the rotor locking device for a wind turbine according to the present invention, and FIG. 4 is a rotor locking device for a wind turbine according to the present invention in a locking state. It shows the layout of the rotor lock disk, the main frame, and the fixing unit. 5 is a perspective view showing a perspective view of a fixing unit of the rotor locking device for a wind turbine according to the present invention in an unlocked state, and FIG. 6 is a perspective view showing a perspective view of the fixing unit of the rotor locking device for a wind turbine according to the present invention in a locked state. , Figure 7 shows an exploded perspective view of the fixing unit of the rotor locking device for a wind turbine according to the present invention. FIG. 8 shows an enlarged view of part A of FIG. 3, and FIG. 9 shows an enlarged view of part B of FIG. 4. 10 is a flowchart illustrating a method of controlling a rotor locking device for a wind turbine according to the present invention.

The definitions of terms used below are as follows. "Horizontal direction" means the transverse direction in the same member, that is, the W direction in Fig. 7, and the "vertical direction" means the longitudinal direction in the same member, that is, the L direction in Fig. 7 while being orthogonal to the horizontal direction. The "direction" means a vertical direction in the same member while being perpendicular to the horizontal direction and the vertical direction. In addition, upward (upper) means a direction from "height direction" to an upward direction, and lower (lower) means a direction from "height direction" to downward. "One side (one end)" and "the other side (the other end)" mean either end of the same member in the horizontal direction. That is, "one side" means the front end in the horizontal direction in FIGS. 1 to 8, and the "other side" means the left end in the horizontal direction. "One end" and "the other end" mean either end of the same member in the vertical direction. That is, "one end" means one end in the vertical direction in FIGS. 1 to 8, and "the other end" means the other end in the vertical direction.

A rotor locking device for a wind turbine 1 according to the present invention will be described with reference to FIGS. 1 to 9. The rotor locking device for a wind turbine according to the present invention includes a tower 300, a nacelle 200, a rotor 100, a rotor lock disk 400, a main frame 500, a fixing unit 600, and a control unit 700. Includes.

The tower 300 is installed on land or on the sea. The tower 300 is installed on land or on the sea in the form of a post, performs a basic post function in which a nacelle and a rotor are installed, and is formed at a constant height for smooth rotation of the blades.

The nacelle 200 is installed on the tower 300. Various devices for generating electricity are installed in the nacelle 200 by rotational power caused by rotation of the blade. For example, a shaft with the other end connected to the blade to rotate with the blade, a bearing inserted into the shaft to support the rotation of the shaft, a gearbox connected with one end of the shaft to convert the rotation of the shaft from low to high speed, and the rotation shaft of the gearbox It is connected to a generator that generates electricity by high-speed rotation of the rotating shaft of the gearbox, a power converter that converts the power produced by the generator, a cooler that cools the generator and power converter, and changes the voltage of the electricity produced by the power converter or generator. A hydraulic drive device for driving various devices such as a transformer, a blade fixing, and the like, and a control unit 700 are installed inside the nacelle.

The rotor 100 is installed at the other end of the nacelle, and a plurality of blades are disposed on the hub to enable rotation and angle adjustment. That is, a hub is rotatably installed at the other end of the rotor, and a plurality of blades are disposed on the hub at a predetermined angle.

The rotor lock disk 400 is installed on the rotor among the portions facing the rotor and the nacelle, rotates together with the rotor, and has a plurality of through holes 410 in a portion thereof. That is, the rotor lock disk 400 is disposed between the rotor and the nacelle, but is coupled to the rotor and rotates together with the rotor. Further, a through hole is formed adjacent to the circumferential surface of the rotor lock disk 400. A plurality of through-holes 410 are formed to be regularly spaced apart at a predetermined angle with respect to the rotation center of the shaft or the rotor lock disk. For example, if three through holes are formed in the rotor lock disk, they are formed adjacent to the circumferential surface of the rotor lock disk so as to be 120 degrees apart from the rotation center of the rotor lock disk. If six are formed, the rotation center of the rotor lock disk It is formed adjacent to the circumferential surface of the rotor lock disk so as to be separated from the reference by 60 degrees.

The main frame 500 is installed at the other end of the nacelle 200. The main frame 500 is formed of a material having a predetermined rigidity and is fixedly installed inside the other end of the nacelle. A drive train, which is a power transmission device composed of a shaft, a bearing, and a gearbox, is installed on the main frame 500. The shaft rotates by the rotation of the blades by the main frame, and even when the generator is operated, vibration and noise are minimized to increase the life and durability of the equipment, and the energy consumption can be minimized to increase the efficiency of the wind turbine. have.

The fixing unit 600 is installed on the main frame, and the head portion 651 of the insertion portion 650 is inserted into or withdrawn into the through hole 410 of the rotor lock disk 400 by the operation of the driving unit 630. Limit or allow rotation of (100). That is, when the head of the insertion part of the fixing unit is inserted into the through hole by the operation of the driving part, the rotor becomes a locking state in which rotation is not possible. Conversely, the head of the insertion part of the fixing unit is in the through hole by the operation of the driving part. When withdrawn, the rotor is in an unlocking state in which it can rotate. A plurality of fixing units may be installed on the main frame to correspond to the positions of the through holes of the rotor lock disk. That is, for example, if three through holes are formed in the rotor lock disk, the fixing unit is also installed on the main frame so as to be 120 degrees apart from the center of rotation of the rotor lock disk so as to correspond to the position of the through holes on the main frame. When formed, the fixing unit is also installed on the main frame to be spaced apart from the center of rotation of the rotor lock disk by 60 degrees to correspond to the position of the through hole in the main frame. Also, if necessary, it may be installed smaller than the number of through holes. That is, as will be described later, the rotor locking device for a wind turbine according to the present invention operates in a link method, unlike the conventional rotor locking device, so that the rotor can be stably locked/unlocked with a small number even at a relatively large capacity, and the cylinder By solving the problem caused by the malfunction of the rotor, the rotor locking function can be basically easily performed even if at least one is installed. Therefore, it is possible to reduce the overall manufacturing cost and maintenance cost of the wind turbine.

The control unit 700 controls the operation of the driving unit. That is, the controller 700 operates to draw in or withdraw the cylinder part of the driving part by a signal received from the central control system, and lock or unlock the rotor by transmitting the signal detected by the sensing part of the sensing part to the central control system. While controlling the status, it monitors the locking/unlocking status of the rotor and delivers the monitored results to the manager in real time. Accordingly, it is possible to prevent damage or damage to the blade or the rotor due to a malfunction of the rotor locking device, prevent safety accidents in advance, maximize the reliability and stability of the wind turbine, and promote the convenience of the operator.

5 to 7, the fixing unit 600 of the rotor locking device for a wind turbine according to the present invention includes a main body 610, a link part 620, a driving part 630, a rod part 640, It includes an insertion part 650, a sensing part 660, and a fixing pin 670.

The main body 610 is fixedly installed on the main frame. The main body 610 includes a pair of horizontal plates 611 formed to be spaced apart from and facing each other and a vertical plate 614 formed at the other end of the horizontal plate. Although not necessarily limited thereto, preferably, the horizontal plate 611 is generally formed in a "V" shape, and the vertical plate is formed parallel to the V-shaped bent portion in a vertical direction.

A fixing hole 612 is formed on one side of the horizontal plate to which the housing unit is coupled, and a coupling hole 613 is formed on the other side of the horizontal plate to be connected to the turning hole of the link unit. In addition, the vertical plate includes a guide hole 615 formed through the vertical plate. The horizontal plate and the vertical plate are formed in the form of a metal plate.

The driving unit 630 is installed to be rotatable on one side of the main body. The driving part 620 includes a housing part 631 and a cylinder part 632 installed in the housing part so as to be able to move forward and backward. The driving unit 630 may be formed of a hydraulic cylinder or a pneumatic cylinder.

One end of the link unit 620 is connected to the housing of the driving unit, and the other end of the link unit 620 is pivotably coupled to the other side of the body unit by the operation of the driving unit. The link part includes a connecting hole 622 formed through one end of the link part so as to be connected to the cylinder part, a turning hole 621 formed through the connecting hole at the other end of the link part so as to be connected to the coupling hole in a vertical direction, and a seating hole formed on one side of the rod part. It is provided with a connect hole 623 is formed through so as to face the turning hole in the horizontal direction on one side of the link to be connected. Although not necessarily limited thereto, preferably, the link portion 620 is formed in the shape of a ""-shaped metal plate.

One end of the rod part 640 is connected to the link part and moves linearly by the rotational motion of the link part. The other end of the rod part 640 is connected to the joint part 653 of the insertion part to allow the linear reciprocating movement of the rod part to the insertion part. Deliver. That is, the rod part 640 has a mounting hole 641 formed through the rod part to connect with the connect hole on one side, and a fastening hole 642 formed through the rod part so as to face the mounting hole in a vertical direction to couple with the joint part. ). Although not limited thereto, the rod portion is formed in the form of a metal bar or a metal plate.

As described above, the insertion portion 650 includes a cylindrical head portion 651 having a predetermined length and diameter and a joint portion 653 protruding from one end of the head portion. The head portion 651 is formed to be recessed in a portion of the head portion and includes a receiving portion to which the other side of the dog portion to be described later is coupled. Such, the insertion unit 650 is connected to the other end of the joint portion of the rod portion in conjunction with the linear reciprocating movement of the rod portion to linearly reciprocate the head portion.

The sensing unit 660 senses an incoming (locking, locking) state or an outgoing (unlocking, unlocking) state in the through hole of the head according to the operation of the driving unit, and transmits the sensing result to the control unit.

The fixing pin 670 is detachably coupled to the body portion and the drive portion, the body portion and the link portion, the link portion and the rod portion, the link portion and the driving portion, and the rod portion and the insertion portion. The fixing pin 670 is formed in the form of a pin type or a bolt and a nut, a rivet in a form capable of snap coupling, press-fitting, and the body part and the driving part, the body part and the link part, the link part and the rod part, the link part and the driving part, and The rod part and the insertion part are detachably coupled.

Specifically, the fixing pin 670 is inserted into the fixing hole to couple the body part and the housing part, and is coupled through the turning hole and the coupling hole at the same time to couple the body part and the link part, and to couple the link part and the cylinder part. It is coupled to the connection hole, and is coupled through the connection hole and the seating hole at the same time to couple the link portion and the rod portion, and is coupled through the fastening hole and the joint portion to couple the rod portion and the joint portion. In this way, as it is easy to assemble and disassemble each component constituting the fixing unit by means of the fixing pin, maintenance time and cost can be reduced, and the convenience of the operator can be achieved.

As shown in Figs. 5 to 7, the sensing unit 660 of the fixing unit of the rotor locking device for a wind turbine according to the present invention includes a dog unit 661, a guide unit 662, and a sensing unit 663. do.

One side of the dog portion 621 is coupled to a receiving portion 652 formed concave at one end of the head portion to extend parallel to the rod portion in the horizontal direction. The dog part is formed in the form of a thin metal bar.

The guide portion 622 is formed to extend so that the other end of the guide portion contacts the vertical plate from the top of the horizontal plate. The guide part 622 is formed in a pair so as to face each other in the horizontal direction on the upper part of the horizontal plate to prevent the dog part from being separated to facilitate contact with the sensing part by the dog part drawn in or withdrawn through the guide hole, and straight reciprocation of the dog part Guide the movement.

The sensing unit 623 is coupled to one end of the guide unit to detect the position of the dog unit. That is, when the head part is brought into or out of the through hole by the linear reciprocating movement of the rod part according to the operation of the driving part, the dog part installed in the receiving part of the head part is also formed through the vertical plate in connection with the linear reciprocating movement of the head part. (615) is pulled out or pulled in, and the detection part 623 is formed as a proximity sensor, and when the dog part is pulled into the guide hole and approaches the detection part, it is recognized as locking of the rotor. It is recognized as the unlocking of the ground rotor. The recognized signal of this sensing unit is transmitted to the control unit.

Therefore, in the rotor locking device for a wind turbine according to the present invention, the link part of the fixing unit is pivotably connected to the main body by the forward and backward motion of the driving part, and the rod part is installed to enable linear reciprocation by the pivoting operation of the link part. The number of installations can be minimized by limiting or allowing the rotation of the rotor through a link structure such as an insertion part, thereby minimizing the wind turbine and reducing manufacturing cost.

The combined state and operation principle of the rotor locking device for a wind turbine according to the present invention will be described with reference to FIGS. 3 to 9.

The housing part 631 of the driving part 630 is connected by a fixing pin to a fixing hole 612 formed on one side of the horizontal plate based on the vertical center line (C) of the horizontal plate, and the link part 620 is a horizontal plate. The pivoting hole 621 of the link part is connected to the coupling hole 613 formed on the other side of the horizontal plate based on the vertical center line (C) of the link unit by a fixing pin. At this time, the fixing hole 612 and the coupling hole 613 are formed in the horizontal plate to face each other diagonally with respect to the vertical center line (C) of the horizontal plate.

The cylinder part 632 is connected to a connection hole 622 formed on one side of the link part by a fixing pin. In the rod part 640, a mounting hole 641 formed at one end of the rod part is connected by a fixing pin to a connect hole 623 formed at one side of the other end of the link part, and a fastening hole 642 formed at the other end of the rod part is a joint part. It is connected to by a fixing pin.

The turning hole 621 and the connection hole 622 of the link part 620 are formed to be spaced apart from each other along the horizontal direction (L) of the link part, and the link part 620, the turning hole 621 and the connect hole 623 are It is formed to be spaced apart from each other along the vertical direction (W) of the link portion.

Accordingly, when the housing part rotates around the fixed hole by the in/out of the cylinder part or the link part rotates around the turning hole and the coupling hole by the rotational force of the connecting hole of the link part connected to the cylinder part, the link part only rotates with the minimum rotational motion of the link part. By linearly reciprocating the rod part connected to the negative connect hole and linearly reciprocating the insertion part by interlocking with the linear reciprocating movement of the rod part, the rotor locking device is miniaturized to reduce weight, thereby securing the convenience of assembly and transportation. By performing the locking/unlocking operation of the rotor by operation, it prevents malfunction due to the existing simple linear movement, thereby improving reliability and stability, minimizing the number of installations even in the case of large equipment, and reducing the capacity of the drive unit to reduce manufacturing cost. You can save.

As described above, in order to drive the locking/unlocking of the rotor with a link structure according to the minimum turning operation, the horizontal length (L) of the link portion must be greater than the vertical length (W) of the link portion. ) Preferably, the ratio (L:W) of the horizontal length (L) of the link portion and the vertical length (W) of the link portion is 1: 0.3 to 0.8. If the ratio (L:W) of the horizontal length (L) of the link part and the vertical length (W) of the link part is less than 0.3, sufficient linear reciprocation of the rod part is not secured even by the turning operation, and the rotor locks/ There is a problem that the unlocking operation cannot be implemented. In addition, when the ratio (L:W) of the horizontal length (L) of the link portion and the vertical length (W) of the link portion is greater than 0.8, the size of the link portion increases and the horizontal plate of the body portion is relatively As the size of the vertical plate and the size of the driving part must be increased, the device cannot be miniaturized, and the manufacturing cost is increased. The ratio (L:W) of the horizontal length (L) of the link portion and the vertical length (W) of the link portion is most preferably 1: 0.6. When the ratio (L:W) of the horizontal length (L) of the link portion and the vertical length (W) of the link portion is 1: 0.6, the rod portion can move linearly and reciprocally according to the turning angle of the link portion, so the overall horizontal of the rod locking device The size of the vertical direction is reduced to achieve miniaturization, and manufacturing cost is reduced by using a hydraulic device with a small capacity, and durability and stability can be maximized by preventing unnecessary operations.

When the rotor needs to be locked in situations such as the installation, maintenance, or emergency of a wind turbine, or when this situation is resolved and the rotor needs to be unlocked, the control unit receives a signal from the operator working in the central control system or nacelle.

When the control unit receives the related signal, it operates the driving unit according to the received signal. That is, in the case of unlocking the rotor as shown in FIGS. 3, 5, and 8, the cylinder portion is compressed and the link portion is rotated so that the rod portion moves linearly backward, and at the same time, the head portion of the insertion portion also moves linearly backward and the head portion is drawn out into the through hole. do. At the same time, the dog part coupled to the receiving part of the head part also moves backwards and is inserted through the guide hole to be brought in close to the sensing part. The detection unit transmits an unlocking signal to the control unit as the dog unit approaches within a predetermined distance, and the control unit transmits the unlocking signal to the operator again from the central control system or nacelle.

On the contrary, in the case of rotor locking as shown in FIGS. 4, 6, and 9, the cylinder portion is extended and the link portion is rotated in the opposite direction to move the rod portion straight forward, and at the same time, the head portion of the insertion portion also moves linearly forward and the head portion enters the through hole. do. At the same time, the dog portion coupled to the receiving portion of the head portion is also moved straight forward and is drawn out through the guide hole to move away from the sensing portion. The detection unit transmits a locking signal to the control unit as the dog unit deviates from a predetermined distance, and the control unit transmits the locking signal to the operator again from the central control system or nacelle.

Therefore, in the rotor locking device for a wind turbine according to the present invention, the link part of the fixing unit is pivotably connected to the main body by the forward and backward motion of the driving part, and the rod part is installed to enable linear reciprocation by the pivoting operation of the link part. The number of installations can be minimized by limiting or allowing the rotation of the rotor through a link structure such as an insertion part, thereby minimizing the wind turbine and reducing manufacturing cost.

In addition, the rotor locking device for a wind turbine according to the present invention is not simply locking/unlocking the rotor according to the reciprocating movement of the piston through the link structure, but locking or unlocking the rotor by the operating principle of the link structure. Reliability and safety can be improved by preventing the release of the product from being released in advance and preventing safety accidents in advance.

Moreover, the rotor locking device for a wind turbine according to the present invention minimizes the number of installations of the rotor locking device through a link structure, thereby reducing maintenance time and cost, promoting the convenience of workers, and increasing the life of the wind turbine. have.

A method of controlling a rotor locking device for a wind turbine according to the present invention will be described with reference to FIG. 10. In the blade fixing device for a wind turbine according to the present invention, the operator can manually operate the blade fixing device in each wind turbine, but the blade fixing device for a wind turbine can be automatically operated and controlled remotely from the central control system. There is also.

Hereinafter, a method of controlling a blade fixing device for a wind turbine that is remotely managed by a central control system will be described.

The central control system or the user transmits an operation command for locking or unlocking the rotor to the control unit.

After the transfer step S1, the driving unit is operated by a transmission signal from the control unit.

The head portion is drawn in or out of the through hole of the rotor lock disk by the operation of the driving portion.

After the step (S2) in which the head portion is drawn into or out of the through hole, the dog portion of the sensing unit is drawn out or drawn into the guide hole as the head portion is drawn in or out of the through hole of the rotor lock disk.

After the step (S3) in which the dog unit is withdrawn or inserted into the guide hole, the sensing unit of the sensing unit detects whether the dog unit is in a pull-out state or a pull-in state.

After the detection step S4, the detection result of the detection unit is transmitted to the control unit.

After the step of transmitting to the control unit (S5), the determination signal of the control unit is transmitted to the central control system.

After the step of transmitting to the central control system (S6), if there is an error according to the transmitted signal result, an alarm is generated. If there is no problem, monitor rotor locking or rotor unlocking.

In this way, by automatically operating the rotor locking device remotely by the control method of the rotor locking device for a wind turbine according to the present invention, the convenience of the operator is achieved, operation costs are reduced through rapid work, and safety accidents can be prevented. I can.

In the detailed description of the present invention described above, it has been described with reference to preferred embodiments of the present invention, but those skilled in the art or those of ordinary skill in the relevant technical field of the present invention described in the claims to be described later It will be understood that various modifications and changes can be made to the present invention without departing from the spirit and technical scope. Therefore, the technical scope of the present invention should not be limited to the content described in the detailed description of the specification, but should be determined by the claims.

1: wind power generator, 100: rotor,
110: blade, 200: nacelle,
300: tower, 400: rotor lock disk,
410: through hole, 500: main frame,
600: fixing unit, 610: main body,
620: link unit, 630: driving unit,
640: rod portion, 650: insertion portion,
660: sensing unit, 670: fixing pin,
700: control unit.

Claims (10)

tower;
A nacelle installed on the tower;
A rotor having a plurality of blades rotatably installed and installed at one end of the nacelle;
A rotor lock disk installed in the rotor among portions facing the rotor and the nacelle, rotating together with the rotor, and having a plurality of through holes in a portion thereof;
A main frame installed on the nacelle;
A fixing unit installed on the main frame and restricting or allowing rotation of the rotor as the head of the insertion unit is inserted into or extracted from the through hole of the rotor lock disk by the operation of the driving unit; And
Includes; a control unit for controlling the operation of the driving unit,
The fixing unit is provided in plurality on the main frame to correspond to the position of the through hole of the rotor lock disk,
The fixing unit,
A body portion having a pair of horizontal plates formed to be spaced apart and facing each other and a vertical plate formed at the other end of the horizontal plate, and fixedly installed on the main frame portion;
A driving unit provided with a housing unit and a cylinder unit installed in the interior of the housing unit so as to be able to move forward and backward, and is rotatably installed on one side of the body unit;
One end is connected to the driving unit, the other end is a link unit pivotably coupled to the other side of the main body by the operation of the driving unit;
A rod portion having one end connected to the link portion and linearly reciprocating by a turning operation of the link portion; And
A rotor for a wind turbine, comprising: a joint portion extending at one end of the head portion, and an insertion portion connected to the other end of the rod portion to linearly reciprocate in connection with the linear reciprocating movement of the rod portion. lock.
delete delete The method of claim 1,
The fixing unit,
A sensing unit that senses a pull-in state or a pull-out state in the through hole of the head unit according to the operation of the driving unit and transmits a sensing result to the control unit; And
The main body and the driving unit, the main body and the link unit, the link unit and the rod unit, the link unit and the drive unit, and a fixing pin for detachably coupling the rod unit and the insertion unit; Rotor locking device for a wind turbine, characterized by.
The method of claim 4,
The sensing unit,
A dog portion coupled to one side of a receiving portion concavely formed at one end of the head portion to extend parallel to the rod portion;
A guide portion extending from an upper portion of the horizontal plate to contact the vertical plate so as to prevent separation of the dog portion; And
And a sensing unit coupled to one end of the guide unit to detect the positional state of the dog unit.
The method of claim 5,
The vertical plate includes a guide hole formed through the vertical plate,
The dog part is a rotor locking device for a wind turbine, characterized in that the pull-out or pull-out into the guide hole in connection with the pull-in or pull-out of the through hole of the head according to the operation of the driving part.
The method of claim 6,
The housing part is connected to a fixing hole formed on one side of the horizontal plate based on a vertical center line of the horizontal plate,
The link portion is connected to the pivoting hole of the link portion to a coupling hole formed on the other side of the horizontal plate based on a vertical center line of the horizontal plate,
The fixing hole and the coupling hole are formed in the horizontal plate so as to face each other diagonally with respect to the vertical center line of the horizontal plate.
The method of claim 7,
The cylinder part is connected to a connection hole formed on one side of the link part,
The rod part is a rotor locking device for a wind turbine, characterized in that a mounting hole formed at one end of the rod part is connected to a connect hole formed at one side of the other end of the link part, and a fastening hole formed at the other end of the rod part is connected to the joint part. .
The method of claim 8,
The turning hole and the connecting hole are formed to be spaced apart from each other along the horizontal direction of the link part,
The swing hole and the connect hole are formed to be spaced apart from each other along the vertical direction of the link portion.
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