KR20110134669A - A wave power generator - Google Patents

Abstract

PURPOSE: A wave power generation apparatus is provided to control the elasticity modulus of a support unit and the weight of a steel body using a resonance principle. CONSTITUTION: A wave power generation apparatus comprises a buoyancy generation unit(200), a steel body(400), a support unit(800), a movement converting unit(600), and a generation unit(900). The steel body is formed in the top of the buoyancy generation unit. The support unit elastically supports the steel body and vibrates the steel body using wave. The movement converting unit is connected to the vibrating steel body and converts the position change of the steel body into rotational motion. The generation unit is connected to the movement converting unit and generates electricity by receiving the rotational motion from the movement converting unit.

Description

Wave power generator

The present invention relates to a wave power generator for generating electricity by forming an excitation-type translational vibration system using the vertical motion of the wave.

In general, wave power generation is a method of generating power by generating power using up and down kinetic energy of waves. When the air in the chamber is compressed and expanded, it can be classified as floating using the flow of air generated through the nozzle.

However, the floating type has a problem that is difficult to apply when the low crest is relatively developed a lot of stationary.

On the other hand, in the case of the stationary wave power generator in general, in response to the change in the height of the wave, a floating motion is generated using a force that rises or descends, and the generator is operated by the generated rotational motion to generate electricity.

Therefore, there is a problem that the power generation efficiency depends on digging.

It is an object of the present invention to provide a wave power generation apparatus for producing electricity by rotating a generator with vibration energy of a rigid body by forming a foundation-type translational vibration system including a rigid body whose position is changed by waves and buoyancy forming means for elastically supporting it. It is.

Another object of the present invention is to provide a wave power generation apparatus to determine the optimum spring constant value based on the resonance principle in consideration of the wavelength of the wave appearing different for each installation region, and to improve the power generation efficiency by applying this.

Still another object of the present invention is to provide a wave power generation apparatus in which stability and power generation efficiency are improved by determining the length of an optimized buoyancy forming means in consideration of the wavelength of waves.

The present invention provides a buoyancy forming means, a rigid body provided on the upper side of the buoyancy forming means, support means for elastically supporting the rigid body between the buoyancy forming means and the rigid body to vibrate the rigid body by waves, and the vibrating rigid body It is connected with, the movement conversion means for converting the position change of the rigid body according to the vibration to the rotational movement and the power generation means connected to the movement conversion means for generating electricity by receiving the rotational movement, the motion conversion means is the rigid body A plurality of racks provided on one side of the pinion and one-to-one correspond to the rack and the pinion to rotate in accordance with the movement of the rack, and the center of rotation of the pinion and the power generating means is located on the same line to transmit the rotational motion of the pinion to the power generating means. And a plurality of pinions, wherein the plurality of pinions are connected to one of the at least two rotating shafts to transmit the rotating motion. In addition, each pinion is characterized in that the connection means for forming a selective connection relationship between the pinion and the rotation axis so that the selective rotational motion can be transmitted to the rotation axis.

The connecting means includes a first ratchet to allow a rotational movement to be transmitted to the rotary shaft during the downward movement of the rigid body, and a second ratchet to transmit the rotary motion to the rotary shaft during the upward movement of the rigid body. It is characterized by.

The plurality of racks include a first rack for transmitting a rotational movement to the rotational axis during the ascending movement of the rigid body, and a second rack for transmitting the rotational movement to the rotational axis during the lowering movement, wherein the first rack and the second rack The rack is characterized in that it is opposed.

One side of the rigid body is characterized in that it is further provided with a yaw inner means for guiding the position movement of the rigid body.

The urinary inner means includes a guide forming a moving path of the rigid body, and a slider connecting the guide and the rigid body.

The support means is one or more suspension springs, and the spring constant value of the suspension spring is proportional to the weight of the rigid body or the vibration frequency square of the wave of the installation area, and is determined to be inversely proportional to the sum of the number of suspension springs supporting the rigid bodies in parallel. It is characterized by.

The length of the buoyancy forming means is greater than half the wavelength of the installation area waves, characterized in that determined in the length range corresponding to the entire wavelength.

The wave power generator according to the present invention is configured to vibrate while being elastically supported by a rigid body having a predetermined weight connected to a supporting means having elasticity.

Therefore, in the wave power generation apparatus according to the present invention, by adjusting the weight of the rigid body and the elastic modulus of the support means based on the resonance principle, it is possible to form a larger displacement than the case where the displacement is generated depending on the wave height and buoyancy. The generation cycle has the advantage that it can be formed faster.

In addition, the rigid body can be converted to a rotational movement of the position change by the vibration by the motion conversion means including a rack, pinion and ratchet, the rotary shaft connected to the generator is one direction in all the up or down movement of the rigid body Only one direction rotation of the pinion is transmitted to the rotation axis so that it can rotate.

Therefore, since the positional change of the rigid body due to vibrations all generate a rotational movement for power generation, the power generation efficiency is improved.

1 is a view showing an embodiment of a wave power generation apparatus according to the present invention.
Figure 2 is a view for showing a detailed configuration of a wave power generation apparatus according to an embodiment of the present invention.
Figure 3 is a view for showing a detailed configuration of a wave power generation apparatus according to another embodiment of the present invention.
4 is an exploded perspective view of the wave power generator according to the embodiment shown in FIG.
5 is a view for showing the direction of rotation of the pinion according to the upward movement of the rigid body of the main portion of the present invention.
6 is a partially enlarged view of FIG. 5;
Figure 7 is a view for showing the direction of rotation of the pinion in accordance with the lowering motion of the rigid body of the main component of the present invention.
8 is a partially enlarged view of FIG. 7;
9 is a view for explaining the basic excitation translational vibration system of the wave power generator according to the present invention.
10 is a view for showing the optimum length of the buoyancy forming means according to the wavelength of the wave.

Hereinafter, with reference to the drawings will be described a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention can easily suggest other embodiments within the scope of the same idea.

1 is a view showing an embodiment of a wave power generation apparatus according to the present invention.

Referring to the drawings, the wave power generating apparatus 100 according to the present invention is buoyancy is formed larger than the gravity received by the object buoyancy forming means 200 to float on the water, and the upper side of the buoyancy forming means 200 The exterior is formed by a housing 140 accommodating therein a plurality of configurations for generating electricity in.

The wave power generator 100 may further include an anchor 120. The anchor 120 is fixed to the floating position of the buoyancy forming means 200 so that the wave power generator 100 according to the present invention can produce electricity at a predetermined position.

In addition, in addition to the anchor 120, a plurality of wave power generating apparatus 100 according to the present invention may be provided connected to the connection means 150.

Here, the connection means 150 may be a rope for connecting the plurality of wave power generators 100, or may be composed of a power line for transferring the produced power.

On the other hand, the housing 140 is provided with a plurality of configurations for power generation.

2 is a view for showing a detailed configuration of a wave power generation apparatus according to an embodiment of the present invention for the detailed description, Figure 3 is a view for showing a detailed configuration of a wave power generation apparatus according to another embodiment of the present invention 4 is an exploded perspective view of the wave power generator according to the embodiment shown in FIG.

Referring to these drawings, the housing 140 is provided with a base plate 160 for providing a mounting space of a plurality of configurations described later. That is, the base plate 160 allows a plurality of components to be stably coupled and operate on the upper side of the buoyancy forming means 200.

And, the upper side of the base plate 160, the rigid body 400 having a predetermined weight, the support means 800 for elastically supporting the rigid body 400 to generate translational vibration, and the translation of the rigid body 400 Motion conversion means 600 for converting the position change according to the vibration to the rotational motion and the power generation means 900 for producing electricity by the rotational motion generated through the motion conversion means 600.

In detail, the rigid body 400 may be formed to have a variety of materials or shapes as a weight having a predetermined weight, the lower surface is supported by the support means (800). Therefore, although not shown, a coupling structure such as welding or interference fitting may be formed on the bottom surface of the rigid body 400 so that one side of the support means 800 may be fixed.

In addition, the rigid body 400 is provided with a rack accommodating part 420 so that the rack, which is one component of the motion converting means 600, can be accommodated.

The rack accommodating part 420 is recessed upward from the lower surface of the rigid body 400, and may be formed in plural according to the number of racks to be accommodated.

The relationship between the rack and the rack receiving portion 420 will be described in detail in the description of the motion converting means 600 below.

On the other hand, the support means 800 is an object having elasticity, such as a suspension spring may be determined in consideration of the load and the amount of power generation of the rigid body 400.

That is, the support means 800 may be used to determine the elastic modulus in consideration of the degree of tension and compression or the displacement of the rigid body 400 with respect to the load, the object having the determined elastic modulus. In addition, the support means 800 may be provided in plural to be configured to more stably support the rigid body 400.

On the other hand, the movement converting means 600 includes a plurality of configurations for converting the displacement of the rigid body 400 vibrating while being elastically supported by the support means 800 as described above.

In detail, the motion converting means 600 includes a plurality of racks provided in the rack accommodating part 420, pinions corresponding to the racks in one-to-one correspondence and rotating according to the movement of the racks, and the pinion and the power generating means 900. The rotation axis of the rotation axis 680 is located on the same line to allow the rotational movement of the pinion to be transmitted to the power generation means 900 is included. That is, the rotation shaft 680 may be connected to the rotor constituting the power generating means 900.

Meanwhile, in the illustrated embodiment, two rack receiving parts 420 are formed in the rigid body 400, and a pair of racks are accommodated in the rack receiving part 420, respectively.

Here, the paired rack is the first rack 440 is engaged with the first pinion 620 to be described below during the upward movement of the rigid body 400 to generate a rotational movement of the first pinion 620 and the In the lowering movement of the rigid body 400 is divided into a second rack 460 that is engaged with the second pinion 640 to be described below to generate a rotational movement of the second pinion 640, and are positioned in opposite directions to each other. .

That is, the first rack 440 is fixed to one surface of the rack accommodating part 420, and the second rack 460 is fixed to the surface facing the one surface to which the first rack 440 is fixed. .

The first rack 440 and the second rack 460 are positioned to be spaced apart from each other by a predetermined distance so as to prevent the pinion which is engaged with and rotated from each other. As a result, the first rack 440 and the second rack 460 are located diagonally within the rack receiving portion 420.

On the other hand, the first pinion 620 and the second pinion 640 which rotates in engagement with the rack provided as described above is coupled to the rotating shaft 680 to transmit the rotational movement to the power generating means (900). Here, a connection means is further provided between the rotation shaft 680 and the pinion for transmitting the rotational motion to the rotation shaft 680 according to the rotation direction of the pinion.

The connecting means is configured to transmit a rotational motion to the rotating shaft 680 only when the pinion rotates in either a clockwise or counterclockwise direction, and the pawls and ratchets provided in the pinion This can be applied.

In detail, the first pinion 620 and the second pinion 640 are provided with a first ratchet 610 and a second ratchet 630 which are combined with the rotation shaft 680 to rotate.

That is, the rotation shaft 680 and the pinion are connected to each other through the bearing 650 so as not to directly engage and rotate.

And, the teeth of the ratchet are arranged so that the teeth including the vertical surface and the inclined surface in one direction, the pinion in contact with the teeth formed on the ratchet can be transmitted to the rotation axis 680 in accordance with the rotation direction of the pinion. Detents 622 and 642 are provided.

Accordingly, the detents 622 and 642 are in contact with the inclined surface or the vertical surface in accordance with the rotation direction of the pinion, and the rotational movement of the pinion is selectively transmitted to the ratchet to rotate the rotation shaft 680 in only one direction.

In addition, the rotating shaft 680 is rotated as described above is formed to protrude a predetermined height above the base plate 160, the shaft support for connecting the rotating shaft 680 and the rotor of the power generating means 900 at the same height Rotatably supported by 170. The shaft support 170 may further include a bush 190 for smooth rotation of the rotation shaft 680.

In addition, the rotation shaft 680 passing through the shaft support 170 may be further connected to the balancing gear box 300 as in the embodiment shown in FIG. 3 for more balanced rotation.

That is, the balancing gear box 300 can rotate while supporting one end of the rotating shaft 680 stably, thereby improving power generation efficiency.

On the other hand, one side of the rigid body 400 is provided with a yaw inside means 500 so that the displacement of the rigid body 400 vibrated by the support means 800 can be formed more stably.

In detail, the urinary inner means 500 is connected to the left / right side or the front / rear side of the rigid body 400 to guide the vertical movement of the rigid body 400, and protrudes upward from the base plate 160. It is formed to include a guide 520 for forming a movement path of the rigid body 400, and a slider 480 provided on the side of the rigid body 400 to be slidably connected to the guide 520. .

That is, at least one slider 480 is provided on the side of the rigid body 400, and the slider 480 is configured to be fitted to the guide 520.

Therefore, the rigid body 400 vibrated by the support means 800 can be repeatedly moved along a predetermined path by the slider 480 and the guide 520.

In addition, a guide support panel 510 may be further provided at one side of the guide 520 to double the supporting force of the guide 520 according to the vibration of the rigid body 400.

Hereinafter, the operation of the present invention having the configuration as described above will be described.

When the wave wave generator in the state in which the wave power generating apparatus 100 according to the present invention is floating on the sea, the rigid body 400 moves in parallel with the upward movement and the downward movement, and the upward or downward movement of the rigid body 400 is It will provide the force to rotate the pinion.

For the detailed description, FIG. 5 is a view for showing the rotation direction of the pinion according to the upward movement of the rigid body, which is a main component of the present invention, and FIG. 6 is a partially enlarged view of FIG.

As shown in these figures, when the rigid body 400 moves upward, the support means 800 is tensioned, and the first rack 440 and the second rack 460 are lifted, and the first is moved. The pinion 620 and the second pinion 640 are rotated.

Here, the first rack 440 is located on the left side of the first pinion 620 to rotate the first pinion 620 in a clockwise direction, when the first pinion 620 is rotated in this way The detent 622 is in contact with the vertical surface of the first ratchet 610 coupled with.

Accordingly, while the detent 622 and the first ratchet 610 interfere with each other, the rotational movement of the first pinion 620 is transmitted to the first ratchet 610, and the rotational movement of the first ratchet 610 is performed. Is transmitted to the rotating shaft 680 to be able to rotate the power generating means 900.

In contrast, the second rack 460 is positioned on the right side of the second pinion 640 to rotate the second pinion 640 in a counterclockwise direction.

Here, since the second ratchet 630 coupled with the second pinion 640 is coupled in the same manner as the coupling structure of the first pinion 620 and the first ratchet 610, the second pinion 640 The detent 642 rides over the inclined surface while contacting the inclined surface of the second ratchet 630.

Therefore, the rotational motion of the second pinion 640 does not allow the second ratchet 630 to rotate so that the rotational motion is not transmitted to the rotational shaft 680.

As a result, during the upward movement of the rigid body 400, only the rotational movement of the first pinion 620 is transmitted to the rotation shaft 680, and the second pinion 640 transmits the force to the rotation shaft 680. It can't be done, it's gone.

On the other hand, Figure 7 is a view for showing the rotational direction of the pinion according to the lowering motion of the rigid body of the main portion of the present invention, Figure 8 is a partial enlarged view of FIG.

As shown in these figures, when the rigid body 400 is lowered, the first pinion 620 rotates counterclockwise, and the second pinion 640 rotates clockwise.

Accordingly, as described with reference to FIGS. 5 and 6, only the rotational movement of the second pinion 640 that rotates in the clockwise direction is transmitted to the rotation shaft 680 through the second ratchet 630, and the first pinion 620 is It is futile.

As a result, in the wave power generator 100 according to the present invention, when the rigid body 400 rises, the rotational motion of the first pinion 620 is transmitted to the rotating shaft 680 to generate a rotating force for power generation. When 400 is lowered, the rotational motion of the second pinion 640 is transmitted to the rotation shaft 680 to generate a rotational force for power generation.

In addition, since the support means 800 adds a vibration period formed by the load of the rigid body 400 and the elastic modulus of the support means 800 to the movement of the rigid body 400 due to the wave of the rigid body 400. Displacement can be effectively proceeded, thereby enabling a more stable rotation of the plurality of pinions and the rotating shaft 680. Thus, the power generation means 900 is able to produce a steady electricity based on a stable rotational force.

On the other hand, below to look at the translational vibration equation for a preferred embodiment of the wave power generator 100 having the configuration as described above.

9 is a view for explaining the basic vibration-type vibration oscillation system of the wave power generator according to the present invention.

In the wave power generation apparatus 100 according to the present invention, the optimum value of the spring constant k constituting the basic excitation vibration oscillation system can be derived from the following equation.

...................① (m : 강체, c : 스프링감쇄계수, ω : 파도의 진동수)

① (m: rigid body, c: spring damping coefficient, ω: wave frequency)

here,

.................................②

.................................

...③

... ③

.....................................④

...................................... ④

................................⑤

......................

ego,

라 두면,

If you put it,

...........⑥

........... ⑥

(X: translational amplitude of the rigid body, Y: digging)

............⑦

............ ⑦

Becomes

Where the natural frequency of the translational vibrometer

.................................⑧

.................................

And the frequency ratio is

................................................⑨

................................................ ⑨

Damping ratio

....................⑩

.......... ⑩

Therefore, if the spring constant value k is determined under the condition that X / Y becomes the maximum when ignoring the damping effect in Equation 6, the displacement of the wave height can be transmitted as the vibration displacement.

In this case, since the frequency ratio r is 1 in Equation ⑧, since the frequency ω of the normal wave is known, the optimum spring constant value is determined by Equation 아래 below.

..............................................⑪

.............

That is, in the wave power generator 100 according to the present invention, the value of the spring constant k for optimum power generation efficiency is proportional to the weight of the rigid body and / or the vibration frequency square of the wave, and the number of springs supporting the rigid bodies in parallel. Since it is inversely proportional to the sum, the spring constant value constituting the translational vibration system can be determined in consideration of the above.

On the other hand, in the wave power generation apparatus 100 according to the present invention is to determine the length of the buoyancy forming means 200 in consideration of the wavelength of the installation sea wave.

For the detailed description, FIG. 10 is a view for showing the optimum length of the buoyancy forming means according to the wavelength of the wave.

Referring to the drawings, when the wavelength of the wave is referred to as "λ", the length of the buoyancy forming means 200 is referred to as "L",

또는

일 경우에는 파도의 파장에 비해 부력형성수단(200)의 길이가 짧아 상기 부력형성수단(200)이 안정적으로 병진운동을 하지 못할 뿐 아니라, 전복될 가능성을 가진다.

or

In one case, the length of the buoyancy forming means 200 is shorter than the wavelength of the wave, so that the buoyancy forming means 200 may not be stably translated and may be overturned.

Therefore, in the wave power generator 100 according to the present invention,

와 같은 길이범위에서 상기 부력형성수단(200)의 길이를 설계함으로써, 안정적인 병진운동은 물론 파도에 의해 전복되는 상황이 발생하지 않도록 함으로써 발전효율이 향상될 수 있도록 한다.

By designing the length of the buoyancy forming means 200 in the length range, such as the stable translational movement as well as to avoid the situation to be overturned by waves so that the power generation efficiency can be improved.

100 ..... Wave Power Generator 120 ..... Anchor
140 ..... Housing 160 ..... Base plate
200 ..... buoyancy forming means 300 ..... balancing gear box
400 ..... rigid 420 ..... rack receptacle
440 ..... the first rack 460 ..... the second rack
480 ..... slider 500 .....
510 ..... guide support panel 520 ..... guide
600 ..... Transformation means 610 ..... first ratchet
620 ..... the first pinion 630 ..... the second ratchet
640 ..... 2nd Pinion 650 ..... Bearing
680 ..... axis of rotation 800 ..... supporting means
900 ..... Power Generation

Claims (7)

Buoyancy forming means;
A rigid body provided above the buoyancy forming means;
Support means for vibrating the rigid body by waves by elastically supporting the rigid body between the buoyancy forming means and the rigid body;
A motion converting means connected to the vibrating rigid body and converting the positional change of the rigid body into the rotating motion due to the vibration; And
It is connected to the movement converting means; generating means for generating electricity by receiving a rotational movement; includes,
The motion conversion means,
A plurality of racks provided at one side of the rigid body;
Pinion and one-to-one correspond to the rack and rotates according to the movement of the rack,
A rotational axis of the pinion and the center of rotation of the power generating means is located on the same line so that the rotational motion of the pinion can be transmitted to the power generating means,
At least two pinions are connected to one or more rotational shafts to transmit rotational movements, and each pinion forms a selective connection relationship between the pinion and the rotational shafts so that selective rotational movements can be transmitted to the rotational shafts. Wave power generation apparatus provided with a connection means.
The method of claim 1, wherein the connecting means,
A first ratchet to allow a rotational movement to be transmitted to the rotational shaft during the downward movement of the rigid body;
And a second ratchet configured to transmit a rotational motion to the rotational shaft during the upward movement of the rigid body.
The method of claim 1, wherein the plurality of racks,
A first rack for transmitting a rotational movement to the rotational shaft during the upward movement of the rigid body;
It includes a second rack for transmitting a rotational movement to the rotating shaft when moving down,
The first rack and the second rack is opposed to the wave power generator.
The method of claim 1, wherein the one side of the rigid body,
Wave power generation apparatus is further provided for the inner yaw means for guiding the movement of the rigid body.
The urinary intramuscular means according to claim 4,
A guide forming a movement path of the rigid body;
Wave generator comprising a slider for connecting the guide and the rigid body.
The method of claim 1 wherein the support means is one or more suspension springs,
The spring constant value of the suspension spring is proportional to the weight of the rigid body or the vibration frequency square of the wave installation area, and is determined to be inversely proportional to the total number of suspension springs supporting the rigid body in parallel.
According to claim 1, wherein the length of the buoyancy forming means,
Wave power generation device that is larger than half the wavelength of the installation wave and is determined in the length range corresponding to the whole wavelength.

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