KR101584273B1 - Tidal generator using a magnetic coupler with strut watertight - Google Patents

Abstract

The present invention relates to a tide generator of a strut watertight structure using a magnetic coupler. More specifically, the purpose of the tide generator of a strut watertight structure using a magnetic coupler is as follows. Power is delivered by means of a magnetic coupler separated into an outer rotor and an inner rotor in a strut part supporting a nacelle part, thereby preventing the inflow of external seawater into an inner generating device and easily performing maintenance. In order to achieve the purpose, the tide generator of a strut watertight structure using a magnetic coupler according to the present invention, comprises: a duct, which forms a flow path; a nacelle part, on which a hub, which is rotated by a blade receiving power by fluid flow, is mounted; a strut part, which connects one end of the duct and the nacelle part; and a generator, which receives kinetic energy generated from the nacelle part through the strut part and converts into electric energy. In this regard, the strut part includes: an inner rotor on which an inner magnetic material is mounted so that kinetic energy generated from the nacelle part is rotated by means of a bevel gear; an outer rotor, on which an outer magnetic material, which receives magnetic force by interlocking with the inner magnetic material in the inner rotor, is mounted, wherein the outer magnetic material is installed on the inner periphery of the outer rotor; and a part for preventing fluid inflow, which is spaced from the outer magnetic material, protects the outer rotor, and seals the outer rotor from water.

Description

TECHNICAL FIELD [0001] The present invention relates to a tidal water generator having a strut water tight structure using a magnetic coupler,

The present invention relates to an algae generator of a strut watertight structure using a magnetic coupler, and more particularly, to an algae generator having a strut watertight structure using a magnetic coupler. The algae generator is separated into an outer rotor and an inner rotor, The present invention relates to an algae generator of a strut watertight structure using a magnetic coupler which prevents external seawater from flowing into an internal power generator and facilitates maintenance because the power is transmitted using a magnetic coupler.

Major developments using marine energy are tidal power generation using the potential energy of seawater and tidal power generation using the kinetic energy of seawater.

The tidal power generator is a power generation device that extracts energy from tidal currents, that is, tidal current, while using tide as a power source.

Tidal power generation is a method of generating electric energy by generating electricity by using the water level difference between reservoir and sea level at the time of ebb tide by installing seawater and blocking the seawater by blocking the seawater only with the dike where tide occurs. In other words, it is a system similar to hydroelectric power generation system in which a dam is constructed only at a large tidal range, and a dam is constructed at a river estuary and the turbine is rotated at the time of tide and ebb.

On the other hand, tidal power generation does not need to install a dam like a tidal power generation because it is a method of using the fast flow of seawater, that is, the flow of natural seawater. Propeller type, Darrieus type, Savonius type, and modified or modified versions of these turbine generators are used for tidal power generation.

Since the tidal generator requires only a water turbine generator required for power generation without a tidal dam, the cost is low, but the flow rate of the tidal flow must be above a certain speed, so it is difficult to select a suitable place. There is a disadvantage in that the amount of power generation is influenced. However, seawater distribution is free and has little impact on the marine environment.

Therefore, in the case of tidal current, it is possible to know the forecast of the flow almost accurately and to make regular development. The west coast of Korea is evaluated as the best place for tidal current generation.

Korean Patent Registration No. 10-1002174 entitled " Active Drift Control Multi-array Horizontal Axial Tidal Power Generation Device " (2010.12.10.), Korean Patent Registration No. 10-1226018 entitled " Tidal Generator " , And Korean Patent Registration No. 10-1056695, entitled " Algae generator for correcting eccentricity and eccentricity correction method " (Aug. 2011).

Conventionally, an example of a conventional tidal power generator has a problem that it is generally difficult to maintain a watertight structure for preventing intrusion of seawater because a power generation turbine is located in water and a structure including a generator and a power train is located in the water It was inherent.

In other words, most faults in algae power generation are caused by parts of nacelle including powertrain and generator due to aging of watertight structure, and double or triple watertight structure can be adopted to reduce maintenance cost. However, The production cost of the generator is increased because the performance can not be guaranteed during the lifetime of the generator due to the structural problem that the inside and the outside are not completely separated so as to be blocked.

In addition, there is a problem that it takes a long time to perform maintenance due to the disassembly of the double or triple watertight structure or due to the nature of the underwater environment, and the cost increases.

That is, the conventional tidal power generator has a problem in that maintenance and repair are costly due to the nature of the underwater environment, and most of the causes of the trouble are the seawater flowing into the equipment, which requires complete watertightness.

Korean Patent Registration No. 10-1002174, entitled " Active Orientation Control Multi-array Horizontal Axial Algae Power Generation Device " (2010.12.10.) Korean Patent Registration No. 10-1226018, entitled 'Bird Generator' (2013.01.18.) Korean Patent Registration No. 10-1056695, entitled " Algae Generating Device and Eccentricity Correction Method Correcting Eccentricity " (2011.08.08.)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the problems of the prior art, and to provide a method of transmitting power by using a magnetic coupler, which is separated into an outer rotor and an inner rotor, The present invention provides an algae generator of a strut watertight structure using a magnetic coupler that prevents external seawater from entering the internal power generation device and facilitates maintenance.

In order to achieve the above object, the present invention provides a tidal-water-tight tidal-type power generator using a magnetic coupler according to the present invention, comprising: a duct for forming a flow path; A strut portion connecting one side of the duct and the nacelle portion and a generator for receiving kinetic energy generated from the nacelle portion through the strut portion and converting the kinetic energy into electric energy, An outer rotor having an inner magnetic body mounted on the inner rotor so that the kinetic energy generated by the inner rotor is rotated through the bevel gear, And a plurality of outer magnetic poles Comprises a; protection and fluid inflow block unit for watertight.

According to the present invention, since the outer rotor (INER ROTOR) and the INNER ROTOR transmit power by using permanent magnets (magnetic material), it is generally possible to perform physical separation of the portion vulnerable to watertightness There is an advantage that the seawater inflow can be blocked from the source.

In addition, the inner rotor can be watertight while protecting the inner rotor between the outer rotor and the inner rotor through the inlet / outlet interception part 330, Can be prevented.

The strand water-tight structure algae generator using the magnetic coupler according to the embodiment of the present invention has less noise or vibration and is more maintenance-friendly than the technique using the conventional seal.

In addition, the outer rotor (OUTER ROTOR) and the inner rotor (INNER ROTOR) are spaced apart from each other by a predetermined distance, and the separated portion is filled with seawater (fluid) .

1 is a schematic perspective view illustrating a concept of a magnetic coupler according to an embodiment of the present invention.
2 is a schematic view for explaining a configuration of a stride water tight structure algae generator using a magnetic coupler according to an embodiment of the present invention.
FIG. 3 is a view showing a portion 'A' of FIG. 2. FIG.
4 is a view showing a portion 'B' in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, however, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

In the accompanying drawings, some of the constituent elements are exaggerated, omitted or schematically shown, and the size of each constituent element does not completely reflect the actual size. In addition, the same reference numerals are assigned to the same or corresponding components throughout the accompanying drawings.

FIG. 1 is a schematic perspective view showing a concept of a magnetic coupler according to an embodiment of the present invention. FIG. 2 is a schematic view for explaining the configuration of a stride water tight structure algae generator using a magnetic coupler according to an embodiment of the present invention. FIG. 3 is a view showing a portion 'A' in FIG. 2, and FIG. 4 is a view showing a portion 'B' in FIG.

As shown in FIG. 1, a main feature of the present invention is that a magnetic coupler that is separated into an outer rotor and an inner rotor is used, and a strut using a magnetic coupler according to an embodiment of the present invention is used. The tide generator of the watertight structure includes a cylindrical inner rotor 310 including an inner magnetic body 311 and a hollow cylindrical outer rotor 320 including an outer magnetic body 321 And a fluid inflow blocking portion 330 spaced apart from the outer magnetic body 321 by a predetermined distance to protect the outer rotor 320 and maintain watertightness.

Because of this, a magnetic coupler that transmits kinetic energy as magnetic force by using a magnetic body (permanent magnet) and physically connects the nacelle to a non-contact power transmission is installed to block fluid inflow. You can make it outstanding.

Here, the nacelle portion according to the present invention is formed to be rotatable about a strut portion that connects a nacelle portion in a cylindrical shape having a predetermined length, and has a streamlined body that can rotate around the strut portion due to the action of lift and drag by the flow of the fluid. .

However, the shape of the nacelle is not limited to a cylindrical shape and can be applied to various shapes such as elliptical shape and polygonal shape as long as the function thereof is not problematic, so that the technical idea of the present invention is not limited to the shape mentioned in the embodiment of the present invention.

In addition, the inside of the nacelle has a structure capable of transmitting power to a generator described later by using a bevel gear.

2 to 4, an algae generator of a strut watertight structure using a magnetic coupler will be described.

2, an algae generator of a strut watertight structure using a magnetic coupler according to an exemplary embodiment of the present invention includes a duct 100 forming a flow path, a rotor 200 rotated by a blade 210, A strut part 300 connecting one side of the duct 100 to the nacelle 200 and a nacelle part 300 connected to the nacelle part 300 through the strut part 300, And a generator 400 for receiving kinetic energy generated by the generator 200 and converting the kinetic energy into electric energy.

As shown in FIG. 3, the blade 210 is rotated by the fluid flow through the hub 220 integrally connected thereto, and the hub 220 is rotated in the vertical direction with respect to the center axis on which the hub 220 rotates The bevel gear 230 mounted in the nacelle portion 200 is provided.

The rotational force converted by the bevel gear 230 is transmitted to the generator 400 by the later described strut 300 including the inner rotor 310 and the outer rotor 320.

4, an inner magnetic body 311 composed of a magnetic material is mounted on the outer circumferential surface of the inner rotor 310 connected to the vertical axis of the bevel gear 230).

The outer magnetic body 321 receiving the magnetic force interlocked with the inner magnetic body 311 is mounted on the inner circumferential surface of the outer rotor 320 and the outer rotor 320 is positioned below the outer magnetic body 321.

In particular, the inner rotor 310 and the outer rotor 320 are spaced apart from each other by a predetermined distance, and are spaced apart from each other by a magnetic force.

A fluid inflow blocking portion 330 for protecting and sealing the outer rotor 320 is disposed between the inner rotor 310 and the outer rotor 320.

In addition, the fluid inflow blocking portion 330 may be made of a non-magnetic material such as stainless steel, ceramic, or plastic to protect the outer rotor 310 and provide a water-tight and fluid magnetic force. And may be formed or coated with a thin film.

In this way, the inside and the outside are physically completely separated by using the magnetic coupler, so that the watertightness can be improved.

That is, since the magnetic coupler composed of the inner rotor 310, the outer rotor 320, and the inflow blocking portion 330 is used, a physical gap in which the fluid can flow is not made, .

On the other hand, between the fluid inflow blocking portion 330 and the inner partition wall portion 340 is sealed with an O-ring 331 for watertightness.

Each component is described in detail as follows.

The duct 100 corresponds to a passage through which the fluid flows, thereby forming a flow path to smoothly generate algae.

The nacelle 200 is mounted with a hub 220 that is rotated by a blade 210 that is urged by a fluid flow.

That is, the hub 220 integrally connected to the blade 210 receives the force of the blade surface due to the flow of the fluid and rotates through the received force to generate mechanical kinetic energy. At this time, the rotational force generated by the hub 220 located at the front end of the nacelle 200 is transmitted to the bevel gear 230 inside the nacelle 200, and the rotational force, which rotates about the center axis of the nacelle 200, 300 in the direction of the central axis.

Accordingly, in this embodiment, the nacelle 200 including the blades 210 in the form of a wing can be adjusted to face in the direction opposite to the direction of the tide (fluid flow) for efficient power generation.

The strut part 300 connects one side of the duct 100 with the nacelle 200 and supports the nacelle 200.

The inside of the strut 300 includes an inner rotor 310 receiving power through the bevel gear 230 of the nacelle 300 and an outer rotor 320 interlocked with the inner rotor 310 to rotate magnetically, .

More specifically, the strut part 300 receives rotational force from the bevel gear 230 of the nacelle part 200 and is physically separated using a magnetic force to be watertight and transmits power, In this embodiment, an inner rotor 310 equipped with an inner magnetic body 311, an outer rotor 320 mounted with an outer magnetic body 321, and a fluid inflow blocking portion 230 are provided. 331 and an inner partition wall portion 340. The main device is protected from the fluid and is sealed and watertight by being positioned inside the strut portion 300.

The inner rotor 310 has a circular hub shape in which an inner magnetic body 311 is mounted on the outer peripheral surface to transmit a magnetic force.

The outer rotor 320 has a circular hub shape having an outer magnetic body 321 mounted on an inner peripheral surface of the inner rotor 310 to receive a magnetic force interlocked with the inner magnetic body 311.

On the other hand, the inner magnetic body 311 and the outer magnetic body 321 are members having magnetic properties such as permanent magnets.

The inflow blocking portion 330 is spaced apart from the outer magnetic body 321 by a predetermined distance to form a protective film to protect the outer rotor 320 and to be water tight and is fixed in the strut portion 300 by the inner partition wall portion 340 .

In addition, the inflow preventing portion 330 uses a non-magnetic material such as stainless steel or plastic.

When the inner rotor 310 rotates, a magnetic force is generated in the non-contact outer magnetic body 321 interlocked with the inner magnetic body 311 in the inner rotor 310 to rotate the outer rotor 320, So that electric energy is obtained.

The O-ring 331 is used to seal the gap between the inflow blocking portion 330 and the inner partition wall portion 340.

The inner partition wall portion 340 receives the magnetic force from the inner rotor 310 and the inner rotor 310 and the inflow blocking portion 330 are spaced apart from each other by a predetermined distance so that the outer rotor 320 can rotate smoothly And is fixed to the strut part 300 so as to be held.

The generator 400 receives kinetic energy generated from the nacelle 200 through the strut 300 and converts the energy into electric energy.

Hereinafter, the operation of the stride water tight structure algae generator using the magnetic coupler according to the embodiment of the present invention will be described.

First, the hub 220 is rotated by the force of the blade 210 due to the flow of the fluid passing through the duct 100 in which the flow path is formed.

The rotational force generated in the hub 220 is changed in the direction of the center axis of the strut 300 from the center axis direction of the nacelle 200 through the bevel gear 230 inside the nacelle 200.

That is, the hub 220 integrally connected to the blade 210 receives the force of the blade surface due to the flow of the fluid and rotates through the received force to generate mechanical kinetic energy. At this time, the rotational force generated by the hub 220 located at the front end of the nacelle 200 is transmitted to the bevel gear 230 inside the nacelle 200, and the rotational force, which rotates about the center axis of the nacelle 200, 300 in the direction of the central axis.

The inner rotor 310 which receives the power through the bevel gear 230 of the nacelle 300 rotates.

When the inner rotor 310 rotates, a magnetic force is generated in the non-contact outer magnetic body 320 interlocked with the inner magnetic body 311 in the inner rotor 310 to rotate the outer rotor 320, So that electric energy is obtained.

This has the following advantages.

OUTER ROTOR and INNER ROTOR transmit the power by using permanent magnet (magnetic body). Therefore, it is necessary to physically separate seawater inflow from source that is vulnerable to watertightness of the tidal generator, There is an advantage that it can block.

In addition, the inner rotor can be watertight while protecting the inner rotor between the outer rotor and the inner rotor through the inflow / outflow blocking part 330, There is an advantage.

In other words, since the inner rotor and the outer rotor are separated by applying the magnet coupler to the strut portion, there is an advantage that the watertightness of the bird generator can be increased.

That is, a watertight structure is required so that the generator is in water and water is prevented from flowing into the generator. According to the embodiment of the present invention, the inside and the outside are physically separated using the magnetic coupler to fundamentally block the inflow of water It has the advantage of being able to.

The inner rotor 310 which is the upper part of the strut part 300 and the outer rotor 320 which is the lower part of the strut part 300 are physically separated from each other.

Accordingly, the strand water-tight bird generator using the magnetic coupler according to the embodiment of the present invention has less noise or vibration and is more maintenance-friendly than the technology using the conventional seal, The watertight structure using a seal which is periodically replaced according to the life of the watertight structure is advantageous.

In addition, the outer rotor (OUTER ROTOR) and the inner rotor (INNER ROTOR) are spaced apart from each other by a predetermined distance, and the separated portion is filled with seawater (fluid) .

Further, in the case of the magnet coupler method, there is an advantage that noise is reduced because the power transmission is non-contact.

Up to now, the tide water tight structure algae generator using the magnetic coupler of the present invention has been described with reference to the embodiments. The present specification and drawings disclose one embodiment of the present invention, and although specific terms are used, they are used in a generic sense only to facilitate the description of the present invention and the understanding of the present invention.

Accordingly, the scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms without departing from the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

310: inner rotor 311: inner magnetic body
320: Outer rotor 321: Outer magnetic body
330:

Claims (2)

A duct forming a flow path,
A nacelle portion on which a hub rotating by a blade which is subjected to a force by a fluid flow is mounted,
A strut portion connecting one side of the duct and the nacelle,
And a generator for receiving kinetic energy generated from the nacelle portion through the strut portion and converting the kinetic energy into electric energy,
In the strut portion
A cylindrical inner rotor in which an inner magnetic body is mounted so as to rotate kinetic energy generated by the nacelle through a bevel gear,
A cylindrical outer rotor having an outer magnetic body mounted on an inner circumferential surface thereof and having an outer magnetic body coupled to the inner magnetic body in the inner rotor to receive a magnetic force,
And a fluid inflow blocking portion that is spaced apart from the outer magnetic body by a predetermined distance to protect and tightly seal the outer rotor.
The method according to claim 1,
And an o-ring is formed at one side of the strut portion to seal the inlet / outlet portion from the inlet / outlet portion, and a strut watertight structure algae generator using the magnetic coupler.

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