KR20080086148A - Wave-force generation system - Google Patents

Abstract

A wave-force generation system is provided to amplify power of a uni-directional torque delivering unit. A wave-force generation system includes an ocean structure(1) and a buoyance member(2). The buoyance member includes a torque generating unit, a uni-directional torque delivering unit(40), and a generator(60). The torque generating unit reversibly rotates in order to convert lifting and dropping force of the buoyancy member into torque. The generator receives power from the uni-directional torque delivering unit to generate electricity. The torque generating unit includes two pairs of wheels(21) and belts(25). The wheels are mounted on an outer portion of the buoyancy member. A pulley(23) is mounted on a plurality of rotational shafts(31). The belt is provided to deliver the torque of the pulley to the uni-directional torque delivering unit.

Description

Wave generation system {Wave-force generation system}

1 is a perspective view showing a wave power generation system according to the present invention;

FIG. 2 is an exploded perspective view of the buoyancy body usable in the wave power generation system shown in FIG. 1; FIG.

3 is a partially cutaway perspective view of the buoyancy body shown in FIG. 2;

4 is a plan sectional view of the buoyancy body shown in FIG. 3;

5 is a cross-sectional view of the one-way rotational force transmitting means shown in FIGS. 3 and 4;

Figure 6 is an enlarged perspective view of the excerpt of the one-way torque transmission means shown in FIG.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 2; FIG.

8 is a side cross-sectional view showing another embodiment of the unit buoyancy body shown in FIG. 7;

9 is a perspective view illustrating another embodiment of the unit buoyancy body illustrated in FIG. 2.

* Explanation of Signs of Major Parts of Drawings *

1: Offshore Structure 1a: Operating Space

2: buoyant body 21: wheels

22: shaft 23, 24: pulley

25, 25a: belt 34: power input gear

40: one-way power transmission means 44, 45: one-way clutch

46: power output gear 60: generator

70: capacitor 121: pinion

122: rack 123: sprocket

125: chain

The present invention relates to wave power generation, and more particularly, it is possible to simplify the whole system by integrally embedding a generator in a buoyancy body so that a new one can be easily replaced in case of failure of the unit buoyancy body. It relates to a wave power generation system.

In general, wave power generation is a power generation using wave energy of waves, and there is a method of floating a buoyant body in the sea and installing a facility on the coast. It is also estimated that the total wave power available in the world's oceans is 40 PW (Petawatt: 1 PW). Of course, not all of this wave energy is effectively used as electric power.

Various ideas have been proposed until recently, and the current practical use is the use of air turbines. The raising and lowering motion of the sea surface caused by blue is made into the flow of air by the piston, and the generator is driven by turning the air turbine. In the way of fixing to the shore, etc., both ends are fixed to the inner wall and the like. In accordance with the rising and lowering motion of the sea surface caused by the wave, the sea level in the cylinder is also lifting and lowering, and air flow is generated.

In the case of the floating method is often used as a floating lighthouse. Although the barrel moves up and down in accordance with the blue, the sea level in the barrel does not move in full agreement with it. Thus, a flow of air occurs in the barrel. This method is used for power supplies such as route markers.

Recently, due to the depletion of resources and excessive use of energy, studies are being actively conducted to generate electricity by generating power using solar energy, wind power, wave power, and the like, and in particular, Korean Patent Publication No. 1999-0080155 When the buoyancy cylinder is raised or lowered, and a gear rod coupled on the buoyancy cylinder is simultaneously raised or lowered, a technique for generating power by rotating the gear is proposed.

However, the power generation apparatus as described above has a constraint that the gear bar should be lengthened by the length from the low point to the high point of the buoyancy body, and also requires a space for the gear bar to move up and down in the upper part of the structure. It is natural to follow the inefficiency that cannot utilize the space in the upper part of the structure.

In particular, when the vertical movement of the buoyancy cylinder due to waves is not constant, it seems that the coupling between the gear rod and the gear is not smooth and the operation is not performed properly, and the occurrence of failure frequently occurs due to mechanical defects.

To this end, the present applicant has applied for a wave power generation system for generating power as well as the rotational force generated as the buoyancy body rises as well as the rotational force generated by the lowering as Korean Patent Application No. 2007-13639.

This wave power generation system is capable of transmitting accurate driving force in generating power according to the height change of the height of the wave, and it is possible to improve the power generation through the one-way power transmission device for both the lifting force and the lowering force of the buoyancy body due to the waves. By installing a plurality of systems connected to each other to maximize the power generation.

However, the above patent application invention is provided with a separate buoyancy body and a generator, so that the overall system configuration is complicated, and if the buoyancy body connected to the chain is damaged, the replacement operation is not easy and the replacement cost is high. There was a problem.

Accordingly, the present invention can simplify the whole system by integrally embedding a generator in the buoyancy body, and to provide a wave power generation system that can be easily replaced with a new one when the unit buoyancy fails.

The present invention for achieving the above object, in the wave power generation system having a marine structure with a working space is formed, and a buoyancy body which is raised and lowered by waves in the working space of the marine structure: Forward and reverse rotational force generating means for converting the lifting and lowering force of the buoyancy body into rotational force; One-way rotational force transmission means such that power is always transmitted in the same direction even when the rotational force generated by the rotational force generating means rotates forward and backward; And characterized in that it comprises a generator for generating electricity by receiving the output power of the one-way rotational force transmission means.

In the present invention, the rotational force generating means, at least two sets of wheels rotatably mounted on the outside of the buoyancy body; It is preferable to have a pulley mounted on the rotating shaft of the plurality of wheels, and belts for transmitting the rotational force of the pulley to the one-way rotational force transmitting means.

In addition, the rotational force generating means, the racks mounted inside the marine structure; At least two sets of pinion gears rotatably mounted to the outside of the buoyancy body and rotatably engaged with the racks, respectively; It is preferable to have a pulley mounted on the rotation shaft of the plurality of pinion gears, and belts for transmitting the rotational force of the pulley to the one-way rotational force transmitting means.

And the sprocket is mounted on the rotating shaft, it may be provided with a chain for transmitting the rotational force of the sprocket to the one-way rotational force transmission means.

In addition, the buoyancy body may further include a means for amplifying the output power of the one-way torque transmission means, which is preferably composed of a gear train including a plurality of gears.

Hereinafter, with reference to the accompanying drawings, the configuration of the most preferred embodiment of the present invention will be described in detail.

1 shows a schematic perspective view of a wave power generation system according to the present invention, the offshore structure 1 used in the present invention may be installed or positioned in the sea in a fixed or floating manner. In addition, the offshore structure 1 preferably has an upper side and a side as well as a lower side so that the wave force is transmitted to the buoyancy body 2 as it is, and in order to increase the power of development, a plurality of buoyancy bodies 2 have an offshore structure. It is preferable to install in (1).

As can be seen in Figure 1, the height of the buoyancy body 2 is different by the height of the wave (W), if the wave (W) severely hit the power generation can be increased.

2 shows an excerpt perspective view of one buoyancy body 2 and the marine structure 1, the buoyancy body 2 is in close contact with the inner wall of the operating space (1a) of the marine structure (1) waves (W) It is going to go up and down by).

When the buoyancy body (2) is raised and lowered, the lifting and lowering force of the buoyancy body (2) can be converted into a rotational force for this purpose, the buoyancy body (2) is provided with a rotational force generating means capable of forward and reverse rotation, this rotational force generating means Includes eight wheels 21 rotatably mounted to the exterior of the buoyancy body 2, and as shown in FIGS. 3 and 4, on the rotary shaft 22 of the plurality of wheels 21, respectively. A pulley 23 mounted and belts 25 and 25a for transmitting the rotational force of the pulley 23 to the pulley 24, respectively.

When the pulleys 24 are rotated by the belts 25 and 25a, the spur gears 32 and 32a arranged on the respective rotation shafts 31 and 31a rotate, respectively, and the diameter of the rotation shaft 31 is increased. A large spur gear 33 is built up, and the spur gear 33 is engaged with another small diameter spur gear 34 to rotate.

Here, the spur gear 34 forms a power input gear of the one-way rotational force transmission means 40, and the one-way rotational force transmission means 40 is a rotating shaft of the power input gear 34 as shown in FIG. Even if 34a) rotates forward and backward, the rotation shaft 46a of the power output gear 46 (see FIG. 6) always rotates in only one direction.

As such, the one-way rotational force transmitting means 40 rotates the wheel 21 of the rotational force generating means forward and backward, even though the pulley 24 rotates the rotational shaft 34a. It used a one-way rotational force transmission means 40 according to Utility Model Registration No. 20-0422089 registered and filed by the applicant.

Accordingly, the one-way rotational force transmission means 40 used in the present invention is capable of generating power by transmitting rotational force in the same direction as well as when the buoyancy body 2 rises and descends, and the first and second one-way directions. The power output gear 46 is always rotated in a constant direction by using the clutches 44 and 45, and the rotating shaft 46a generates electricity through the gear trains 51 and 52 for amplifying the rotational force. It was to be delivered to the generator (60). The electricity generated in this way is stored in the capacitor 70 via a cable (not shown) to be transmitted to the outside if necessary.

Referring again to FIGS. 2 and 9, reference numerals 27 and 127 denote stoppers that can be detached at the time of replacement of the buoyancy body 2 and that the buoyancy body 2 is not detached arbitrarily. ) Is also preferably installed on the lower side of the marine structure (1).

Referring to the operation of the embodiment of the present invention configured as described above, the buoyancy body 2 is raised and lowered in the operating space (1a) of the structure 1 according to the height of the crest, in this case the buoyancy body (2) Eight wheels 21 rotatably attached to the outside of the) will rotate.

For example, when the buoyancy body 2 rises in the arrow direction A as shown in FIG. 7, the wheels 21 on the right side rotate in the clockwise direction B, and the wheels 21 on the left side counterclockwise. (C), in this case, the rotary shaft 34a shown in FIG. 6 and the power input gear 34 shown in FIG. 4 rotate clockwise, so that the gears 42 and 43 All will rotate counterclockwise.

Accordingly, as the gear 43 and the shaft 43a rotate counterclockwise, the one-way clutch 45 is caught by the latch 48 and rotates counterclockwise, whereas the one-way clutch 44 has the shaft 42a being counterclockwise. As it rotates in the clockwise direction, the shaft 42a becomes free without being affected by the rotational force of the shaft 42a. At this time, the counterclockwise rotation of the one-way clutch 45 is engaged to rotate clockwise.

As a result, as the one-way clutch 45 rotates counterclockwise, the power output gear 46 rotates clockwise.

Thus, as shown in Figure 6, the power output gear 46 is rotated in the clockwise direction, the rotational force generated so that the gear train (51, 52) for amplifying the rotational force as shown in Figures 3 and 4 Can be delivered to the generator 60 to generate electricity through the electricity is stored in the capacitor 70 via a cable (not shown) to be transmitted to the outside if necessary.

On the other hand, when the buoyancy body 2 descends in the direction opposite to the arrow direction A as shown in FIG. 7, the wheels 21 on the right side rotate in the counterclockwise direction, and the wheels 21 on the left side clockwise. In this case, the rotation shaft 34a and the power input gear 34 shown in FIG. 6 rotate counterclockwise, and the gears 42 and 43 all rotate clockwise. .

Accordingly, as the gear 42 and the shaft 42a rotate clockwise, the one-way clutch 44 is caught by the latch 47 and rotates clockwise, while the one-way clutch 45 has the shaft 43a clockwise. As it rotates, it becomes free without being affected by the rotational force of the shaft 43a. At this time, it is engaged by the counterclockwise rotational force of the one-way clutch 44 to rotate counterclockwise.

As a result, as the one-way clutch 45 rotates counterclockwise, the power output gear 46 rotates clockwise.

Thus, as shown in Figure 6, the power output gear 46 is rotated in the clockwise direction, the rotational force generated so that the gear train (51, 52) for amplifying the rotational force as shown in Figures 3 and 4 Can be delivered to the generator 60 to generate electricity through the electricity is stored in the capacitor 70 via a cable (not shown) to be transmitted to the outside if necessary.

As a result, since the power output gear 46 meshed with the second one-way clutch 45 generates the generator 60 while rotating counterclockwise, the height of the digging is increased, so that the buoyancy body 2 is raised or dug. Since the power output gear is always rotated counterclockwise even when the buoyancy body 2 is lowered due to the height of the power generation force is improved.

On the other hand, Figure 8 is a side cross-sectional view of another embodiment of the present invention, the sprocket 123 is mounted on the rotating shaft 22 of the wheel 21, the rotational force of the sprocket 123 is a chain 125 Except that the transmission to the gear 32 via the same as that using the above-described belt and pulley, detailed description thereof will be omitted.

9 shows another modified example of the rotational force generating means of the present invention, which has racks 122 mounted inside the marine structure 1a and engaged with the racks 122 outside the buoyancy body 2. Since at least two sets of rotatable pinion gears 121 are rotatably mounted, the detailed description thereof will be omitted since they are the same as those using the above-described belt and pulley.

As described above, the present invention can simplify the whole system by integrally embedding a generator in a buoyancy body, and easily replace it with a new one when a unit buoyancy body breaks down. It is a very useful invention that can transmit the driving force.

Although the present invention has been described with reference to the accompanying drawings, the present invention is not limited thereto and there may be many variations and modifications within the scope of the following claims.

Claims (6)

In a wave power generation system having an offshore structure having an operating space and a buoyancy body which is moved up and down by waves in the offshore operating space: In the buoyancy body, Forward and reverse rotational force generating means for converting the lifting and lowering force of the buoyancy body into rotational force; One-way rotational force transmission means such that power is always transmitted in the same direction even when the rotational force generated by the rotational force generating means rotates forward and backward; And And a generator for generating electricity by receiving the output power of the one-way rotational force transmitting means. According to claim 1, The rotational force generating means, At least two sets of wheels rotatably mounted to the outside of the buoyancy body; And a belt for transmitting the rotational force of the pulley to the one-way rotational force transmitting means. According to claim 1, The rotational force generating means, Racks mounted inside the marine structure; At least two sets of pinion gears rotatably mounted to the outside of the buoyancy body and rotatably engaged with the rack; And a pulley mounted on the rotation shaft of the plurality of pinion gears, and belts for transmitting the rotational force of the pulley to the one-way rotational force transmitting means. The rotating shaft according to claim 2 or 3, A sprocket is mounted, the wave power generation system characterized in that it comprises a chain for transmitting the rotational force of the sprocket to the one-way rotational force transmission means. The wave power generation system according to claim 1, further comprising means for amplifying the output power of the one-way rotational force transmitting means in the buoyancy body. 6. The wave power generation system according to claim 5, wherein the means for amplifying the output power of the one-way rotational force transmitting means comprises a gear train including a plurality of gears.

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