KR101584272B1 - Tidal mooring generator using a magnetic coupler underwater - Google Patents

Abstract

The present invention relates to an underwater mooring tide generator using a magnetic coupler. More specifically, the underwater mooring tide generator transmits power to shafting that is vulnerable to water-tightness by utilizing a magnetic coupler separated into an outer rotor and an inner rotor, thereby preventing the inflow of outer seawater into a mechanical device and facilitating maintenance. According to the present invention, the underwater mooring tide generator using a magnetic coupler, which has a nacelle part toward the direction facing the direction of fluid flow, comprises: an outer part, which is combined with a blade part that is arranged outside the nacelle part to generate rotation force according to the flow of fluid, and consists of a outer rotor in which an outer magnetic material is included; and a tide generating part, which is combined with a supporting part that is arranged inside the nacelle part to support the nacelle part, and consists of a generator that generates power by receiving rotation force from the outside, an inner rotor that is installed on the rotation axis of the generator, an inner magnetic material that is installed on the outer periphery of the inner rotor and is interlocked with the outer magnetic material in the outer rotor to receive magnetic, and an inner partition part that is spaced from the inner magnetic material at a predetermined distance so as to protect and waterproof the inner rotor.

Description

TECHNICAL FIELD [0001] The present invention relates to an underwater mooring tidal generator using a magnetic coupler,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater mooring tidal generator using a magnetic coupler, and more particularly, to a tidal current generator using a magnetic coupler which is separated into an outer rotor and an inner rotor, To an underwater mooring tidal generator using a magnetic coupler for preventing external seawater from flowing into an internal mechanical device and facilitating maintenance.

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 above-mentioned problems of the prior art, and to provide a power transmission system using a magnetic coupler which is separated into an outer rotor and an inner rotor in a shaft- The present invention provides an underwater mooring algae generator using a magnetic coupler that prevents external seawater from flowing into an internal mechanical device and facilitates maintenance.

According to an aspect of the present invention, there is provided an algae generator having a nacelle portion facing a direction in which a fluid flows, the alga generator having a nacelle portion, And an outer rotor having an outer magnetic body therein, the outer rotor being coupled to the blade portion for generating a rotational force in accordance with the flow of the outer rotor. A generator that is provided on the inner side of the nacelle and is coupled to a support portion for supporting the nacelle and receives a rotational force from the outside to generate electric power; an inner rotor installed on a rotary shaft of the generator; An inner magnetic body for receiving a magnetic force interlocked with the outer magnetic body in the inner magnetic body, and an inner wall part spaced apart from the inner magnetic body by a predetermined distance to protect and watertighten the inner rotor.

The present invention relates to a seal which is less noise or vibration than a conventional seal technology and is maintenance-friendly, and which is periodically changed according to the life of the seal due to wear of the seal, There is an advantage over the watertight structure.

In addition, a magnet coupler is applied to the tip of the nacelle to separate the outboard portion with the blade portion from the bird's power generation portion, thereby increasing the watertightness of the bird's power generator.

In addition, since the outboard portion including the blade portion and the bird's power generator are separated from each other in a non-contact and physical manner, there is an advantage that the impact from the outboard portion can be mitigated.

In addition, even if a slip occurs at a cutter speed (CUT OUT SPEED), the impact is reduced because the slip is not directly transmitted to the inside of the tidal generator.

In addition, a cutter speed (CUT OUT SPEED) can receive a constant torque, so that there is an advantage that it can be continuously developed.

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 an underwater mooring tidal generator using a magnetic coupler according to an embodiment of the present invention.
FIG. 3 is a detailed view of the magnetic coupler portion of FIG. 2. 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 illustrating a concept of a magnetic coupler according to an embodiment of the present invention. FIG. 2 is a schematic view for explaining a configuration of an underwater mooring tidal generator using a magnetic coupler according to an embodiment of the present invention And FIG. 3 is a detailed view of the magnetic coupler portion of 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. In the present invention, The Moirring tidal generator includes an outer rotor 110 including an outer magnetic body 120; And an inner partition wall 230 which is formed to include the inner rotor 210 including the inner magnetic body 220 and is spaced apart from the inner magnetic body 220 by a predetermined distance to protect and water tightly seal the inner rotor 210 .

Therefore, power can be transmitted by using a magnetic body (permanent magnet), and the inner and outer sides of the nacelle can be physically separated to block fluid inflow.

Here, the nacelle portion according to the present invention has a cylindrical shape with a predetermined length and is formed to be rotatable about a support portion supporting the nacelle portion. The nacelle portion is a streamlined body capable of rotating about the support portion, .

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.

The inside of the nacelle also serves to seal the algae generator 200, which will be described later, from the fluid.

2 to 3, a description will be made of an underwater mooring tidal generator using a magnetic coupler.

The underwater mooring tidal generator using the magnetic coupler according to the embodiment of the present invention includes an outboard part 100 corresponding to the outside of the nacelle and an algae generator 200 corresponding to the inside of the nacelle, The tern 100 includes an outer rotor 110, an outer magnetic body 120 and a blade 130. The tern power generation unit 200 includes an inner rotor 210, an inner magnetic body 220, (230).

More specifically, an underwater mooring tidal generator using a magnetic coupler according to an embodiment of the present invention includes a nacelle 10 having a nacelle 10 facing a direction in which a fluid flows, The outer rotor 100 includes a hollow cylindrical outer rotor 110 coupled to a blade 130 that generates a rotational force in accordance with the flow of the fluid and includes an outer magnetic body 120 therein. Wow; A generator 250 disposed inside the nacelle unit 10 and coupled to a support unit 300 for supporting the nacelle unit 10 and receiving a rotational force from the outside to generate electric power; An inner magnetic body 220 installed on the outer peripheral surface of the inner rotor 210 and receiving a magnetic force interlocked with the outer magnetic body 120 in the outer rotor 110, And a bird's power generator 200 having an inner partition wall 230 spaced apart from the magnetic body 220 by a predetermined distance to protect and water-tighten the inner rotor 210.

The inner partition wall 230 receives a magnetic force from the outer rotor 110 and is spaced apart from the inner rotor 210 by a predetermined distance so as to smoothly rotate the inner rotor 210, The inner support 240 is fixed to the inner support 240.

In addition, the inner partition wall 230 may be formed of a non-magnetic material such as stainless steel, ceramic, plastic, or the like and may be formed or coated with a thin film to protect and waterproof the inner rotor 210.

Meanwhile, the generator 250 may be installed outside the nacelle 10, if necessary, to generate power by receiving the power.

As shown in FIGS. 2 and 3, each component will be described as follows.

In the present embodiment, the outer rotor 110, the outer magnetic body 120, and the blade portion (not shown) are disposed in the outboard portion 100. The outboard portion 100 is a member that is installed in water and rotates by a current 130). Therefore, in the present embodiment, the nether section 10 should be adjusted so that the outboard part 100 including the blade part in the form of a wing is directed in the direction opposite to the direction of the tide (fluid flow) for efficient power generation.

The outer rotor 110 has an outer magnetic body 120, which is a magnetic substance such as a permanent magnet, in the form of an annular hub.

As a result, kinetic energy is supplied through the blade 130 on which the blades having the force of the fluid flow are mounted, thereby rotating the streamer-shaped outer unit 100 surrounding the outer rotor 110.

That is, a blade is installed in the blade 130, and is converted into rotational motion of the outboard part 100 through a force received on the blade surface by the flow of the fluid, thereby generating mechanical kinetic energy. Since the outer rotor 100 rotates at this time, the non-contact inner magnetic body 220 interlocked with the outer magnetic body 120 in the outer rotor 100 generates a magnetic force so that the inner rotor 210 rotates, And is transmitted to the generator 250, which will be described later, connected to the rotating shaft to obtain electric energy.

The tidal power generator 200 includes an internal generator 250 connected to the rotation shaft of the inner rotor 210 and coupled to the outer rotor 100 to receive a rotational force from the magnetic rotor 210, .

That is, the tidal power generator 200 is a device for generating power by receiving rotational force from the outboard part 100 as magnetic force, and in this embodiment, the inner rotor 210, the inner magnetic body 220, And an inner support 240 or a generator 250. The inner support 240 or the generator 250 is located inside the nacelle 10 and is protected from fluid and sealed and watertight.

The inner rotor 210 has a circular hub shape having an inner magnetic body 220 mounted on the outer circumferential surface of the outer rotor 110 in cooperation with the outer magnetic body 120 described above.

On the other hand, the outer magnetic body 120 and the inner magnetic body 220 are magnetic members such as permanent magnets.

The inner partition wall 230 is spaced apart from the inner magnetic body 220 by a predetermined distance to form a protective film to protect the inner rotor 210 and to be watertight and fixed to the nacelle 10 by an inner support 240 described later.

In addition, the inner partition wall 230 uses a non-magnetic material such as stainless steel or plastic.

The inner support 240 receives the magnetic force from the outer rotor 110 so that the inner rotor 210 and the inner wall 230 are separated from each other by a predetermined distance so that the inner rotor 210 can rotate smoothly And is fixed to the nacelle portion 10 so as to be held.

The generator 250 receives the rotational force from the rotational axis of the inner rotor 210 to generate electric power. Further, the generator 250 may be provided outside the nacelle 10, if necessary.

The nacelle 10 according to the present invention is a main part of an algae generator according to an embodiment of the present invention in which the outboard part 100 and the algae generator part 200 are mounted and operated. (Not shown).

The support part 300 supports the nacelle part 10 including the outboard part 100 and the bird's electricity generator part 200 to be rotatable.

Further, in the tidal mooring tidal generator using the magnetic coupler according to the embodiment of the present invention, the tidal generator 10 having the nacelle portion 10 facing the direction in which the fluid flows faces the outer side of the nacelle portion 10 And an outer rotor 110 coupled to the blade 130 to generate a rotational force according to a flow of the fluid and including an outer magnetic body 120 therein; A generator 250 disposed inside the nacelle unit 10 and coupled to a support unit 300 for supporting the nacelle unit 10 and receiving a rotational force from the outside to generate electric power; An inner magnetic body 220 installed on the outer circumferential surface of the inner rotor 210 to receive a magnetic force interlocked with the outer magnetic body 120 in the outer rotor 110 and an inner magnetic body 220 And an inner partition wall portion 230 that is spaced apart from the outer rotor portion 210 by a predetermined distance and protects the inner rotor 210 and is water tight. May be arranged symmetrically with respect to the central axis of the support part 300. [

This is because, for the purpose of increasing the energy efficiency, the underwater mooring alga generator using the magnetic coupler according to the embodiment of the present invention is disposed on the left and right with respect to the central axis of the support part 300, .

The inner partition wall 230 receives a magnetic force from the outer rotor 110 and is spaced apart from the inner rotor 210 by a predetermined distance so as to smoothly rotate the inner rotor 210, The inner support 240 is fixed to the inner support 240.

Hereinafter, the operation of the underwater mooring tidal generator using the magnetic coupler according to the embodiment of the present invention will be described.

First, the blade portion 130 is pressed by a current (fluid flow) to rotate the outer portion 100 including the outer rotor 110 on which the outer magnetic body 120 is mounted.

At the same time, the inner rotor 210, which is mounted with the inner magnetic body 220 interlocked with the outer rotor 100 in a non-contact manner, receives the magnetic force of the inner magnetic body 220 by the magnetic force of the outer magnetic body 120, do.

Meanwhile, the inner partition wall 230 is spaced apart from the inner magnetic body 220 by a predetermined distance to protect the inner rotor 210 and form a protective film to be water tight.

The inner rotor 210 receives the rotating force generated from the outer rotor 100 by magnetic force and transmits the rotating force to the generator 250 connected to the rotating shaft of the inner rotor 210. [

The generator 250 converts the mechanical energy, which is a rotational force transmitted from the inner rotor 210, into electrical energy to generate electricity.

This has the following advantages.

OUTER ROTOR and INNER ROTOR transmit power by using permanent magnet (magnetic material), so physical separation (shafting), which is the most vulnerable part to the watertightness of the tidal generator, The sea water inflow can be blocked at the source.

In addition, since the inner rotor can be watertight while protecting the inner rotor through the inner partition wall 230 between the outer rotor and the inner rotor, it is possible to prevent the inflow of seawater. There is an advantage.

In other words, a magnet coupler is applied to the tip of the nacelle to separate the outboard portion with the blade portion from the bird's power generation portion, thereby increasing the watertightness of the bird's power generator.

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 outboard portion 100 outside the nacelle 10 and the bird's electricity generator 200 inside the nacelle 10 are physically separated from each other and thus have an advantage of convenient maintenance or repair.

Accordingly, the underwater mooring tidal 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, There is an advantage over the watertight structure using a seal that must be periodically replaced in accordance with the life of the seal.

In addition, since the outboard portion including the blade portion and the bird's power generator are separated from each other in a non-contact and physical manner, there is an advantage that the impact from the outboard portion can be mitigated.

In addition, even if a slip occurs at a cutter speed (CUT OUT SPEED), the impact is reduced because the slip is not directly transmitted to the inside of the tidal generator.

In addition, a cutter speed (CUT OUT SPEED) can receive a constant torque, so that there is an advantage that it can be continuously developed.

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) .

In addition, even when a slip is issued when an allowable torque is exceeded, an excessive torque can be avoided, and there is an advantage that damages of a shaft system and electronic equipment including an internal generator can be reduced.

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

Particularly, the magnetic coupling system has an advantage in favor of a driving apparatus and a power transmission in a region where damage is high (i.e., when an unpredictable momentary high torque is generated).

In addition, even if the blade portion is partially broken by external floating materials (garbage, stone, etc.), it is physically separated so that an impact applied to the nacelle portion can be mitigated.

Up to now, the underwater mooring tidal generator using the magnetic coupler of the present invention has been described through 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.

100:
110: outer rotor 120: outer magnetic body
200:
210: inner rotor 220: inner magnetic body
230: inner partition wall portion

Claims (2)

A tidal generator having a nacelle portion facing a direction opposite to a direction in which a fluid flows,
And an outer rotor having a hollow cylindrical outer rotor coupled to a blade portion provided on the outer side of the nacelle and generating a rotational force in accordance with the flow of the fluid, the outer rotor including an outer magnetic body;
And a support portion provided on the inner side of the nacelle portion to support the nacelle portion,
A cylindrical inner rotor disposed on a rotating shaft of the generator; and an outer rotor disposed on an outer circumferential surface of the inner rotor and interlocked with the outer magnetic body in the outer rotor to transmit a magnetic force And a tidal power generating unit having an inner magnetic body for receiving the inner magnetic body and an inner wall for separating the inner magnetic body from the inner magnetic body and protecting and sealing the inner rotor.
The method according to claim 1,
Wherein the tidal power generating unit is provided with an inner support for fixing the inner partition wall and the inner rotor to the nacelle with a predetermined space therebetween.

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