KR102183627B1 - Wave Power Generator Having Pendulum Movement Part And Linear Reciprocating Cylinder Part - Google Patents

Abstract

Disclosed is a wave power generator. According to one embodiment of the present invention, the wave power generator comprises: a wave power absorption unit which includes a pair of floating support units floating on the seawater surface, bound with each other while being separated by regular intervals using a link structure so that positions thereof are changeable upward and downward in accordance with the height of waves; energy shape conversion units respectively mounted on each of the floating support units, include a pendulum movement unit which makes a pendulum movement in accordance with changes in the angle of the link structure in accordance with the differences in height between the pair of floating support units, and a linear reciprocating cylinder unit which converts the reciprocating movement of the pendulum movement unit into a linear reciprocating movement; and a power generation unit which is mounted near the linear reciprocating cylinder unit to generate a rotary movement through changes in the hydraulic pressure generated by the linear reciprocating movement of the linear reciprocating cylinder unit and to convert the rotary kinetic energy generated into electric energy. According to the present invention, the wave power generator is able to effectively absorb the reciprocating upward/downward kinetic energy of the wave having diverse heights, cycles, and directions by using a stable structure, to convert the reciprocating upward/downward movement kinetic energy absorbed into a rotary movement by using the linear reciprocating cylinder unit and a hydraulic motor, thereby remarkably improving power generation efficiency.

Description

Wave Power Generator Having Pendulum Movement Part And Linear Reciprocating Cylinder Part}

The present invention relates to a wave power generator comprising a pendulum motion part and a linear reciprocating cylinder part, and more particularly, to a wave power generator that absorbs vertical reciprocating kinetic energy at sea level and converts it into pendulum motion and linear reciprocating motion, and then generates electricity. .

In general, wave power generation refers to the conversion of water particles into electric energy through an energy conversion device when the water surface periodically moves up and down by waves.

Such wave power generation can be divided into a floating body type and a fixed type according to the installation method. First, the floating body type is excellent in terms of efficient use of wave energy by a device floating in the sea and the surrounding facilities.

Next, the fixed type is installed on a fixed substrate, which is advantageous in design and construction, can be used in combination with other facilities such as a breakwater, and it is easy to receive the extracted energy.

In addition, according to the method of using the energy of the wave, it can be divided into wave power generation using vertical motion, horizontal motion, and underwater pressure, respectively.

Among them, looking at the operating principle of the floating body type and the air turbine type, the large part of the device is a vertical cylinder, the diameter is several tens of centimeters, and the length is several meters. Its bottom is open so that water can flow in freely.

A'buoy' is attached to the upper part of the cylinder to prevent the entire cylinder from sinking, and since the motion of the wave becomes smaller as it moves away from the water surface, the water surface in the cylinder does not move much.

On the contrary, since the buoy moves up and down by the wave, the water surface in the cylinder moves up and down relative to the cylinder. Therefore, the pressure in the air chamber fluctuates.

In addition, there is an air inlet at the top of the cylinder, which consists of a check valve device that opens only to the inside. When the water surface in the cylinder goes down, air flows into the air chamber as the pressure in the air chamber decreases, and when the water surface rises, the pressure rises and flows out through the air turbine installed above. At this time, as the air turbine rotates, the generator connected thereto generates power.

However, such a conventional wave power generation system is not easy to install due to its complicated structure, and thus there is a problem that the efficiency of power generation is not large.

In order to solve this problem, as shown in FIG. 1, a wave power generation system using a floating structure has been developed.

In the case of a wave power generation system different from the prior art, a generator is included in a fixed connection device, and electric power is produced by converting a reciprocating motion of the connecting device due to a difference in elevation of sea level into a rotational motion of a piston.

However, in this case, too, there is a problem that the vertical reciprocating kinetic energy of waves having various wave heights, periods, and directions cannot be effectively absorbed.

Therefore, there is a need for a technology capable of solving the problems according to the prior art mentioned above.

Korean Registered Patent Publication No. 10-0989594 (Registration date: October 18, 2010)

It is an object of the present invention to effectively absorb the vertical reciprocating kinetic energy of waves having various wave heights, periods, and directions using a stable structure, and absorb the absorbed vertical reciprocating kinetic energy and convert it into pendulum motion and linear reciprocating motion. It is to provide a wave generator including a configuration capable of remarkably improving power generation efficiency by converting it into a rotational motion using a linear reciprocating cylinder part and a hydraulic motor.

A wave generator according to an aspect of the present invention for achieving this purpose includes a pair of floating support parts that are spaced apart from each other by a link structure so as to be suspended on the sea level and change the vertical position according to the wave height. A wave power absorption unit; A pendulum movement unit mounted on each of the floating support units and performing a pendulum movement according to a change in the angle of the link structure according to the height difference of the pair of floating support units, and a linear reciprocating cylinder unit converting the reciprocating motion of the pendulum movement unit into a linear reciprocating movement. An energy form conversion unit; And a power generation unit mounted adjacent to the linear reciprocating cylinder unit, generating a rotational motion through hydraulic pressure change generated by the linear reciprocating movement of the linear reciprocating cylinder unit, and converting the generated rotational kinetic energy into electric energy. It can be a configuration.

In an embodiment of the present invention, the wave power absorbing unit includes: a first floating support unit for mounting a vertical support frame floating on the sea surface and extending by a predetermined height above the sea surface; A second floating support unit floating on the sea level and mounting a vertical support frame extending at an upper portion thereof by a predetermined height; A first horizontal link whose both ends are bound by a hinge structure to the vertical support frames of the first floating support part and the second floating support part so as to separate the distance between the first floating support part and the second floating support part by a predetermined distance; And both ends of the first floating support part and the second floating support part are bound by a hinge structure so as to separate the distance between the first floating support part and the second floating support part by a predetermined distance, and the first horizontal link It may be a configuration including a; a second horizontal link that is spaced apart from and arranged by a predetermined height to form a four-fold link structure together with two vertical support frames and the first horizontal link.

In one embodiment of the present invention, the first floating support portion and the second floating support portion, a floating body having a built-in material floating on the sea surface and having a planar plate-shaped structure; A plate-shaped structure extending downward from both sides of the floating body by a predetermined length, and maintaining a specific posture of the floating body against reciprocating movement of the floating body; And a reinforcing wire for fixing the position of the vertical support frame by connecting the upper end of the vertical support frame from one side or the upper surface of the floating body portion to each other.

In an embodiment of the present invention, the first floating support part and the second floating support part may include a driving force providing part mounted inside or at one side of the floating body part and providing power to the blade variable part; And a blade variable part mounted inside or on one side of the floating body part and changing a direction of the posture maintaining blade.

In one embodiment of the present invention, the pendulum movement unit is rotatably mounted on a binding joint of the second horizontal link and the vertical support frame to interlock with the rotational motion of the second horizontal link, and the extension direction of the second horizontal link A wave power transmission frame having a structure extending to form a predetermined angle and having a sliding member that slides along a sliding rail of a pendulum rod at one end; A pendulum rod bound by a hinge structure to enable a pendulum movement on an upper portion of the vertical support frame and having a sliding rail formed in a direction parallel to the extending longitudinal direction; And a pendulum weight mounted on the lower end of the pendulum rod.

In this case, the sliding member may have a rectangular ring or a circular ring structure surrounding a part of the outer circumferential surface of the pendulum rod, and the sliding member may be a structure coupled by a wave power transmission frame and a hinge coupling part.

In one embodiment of the present invention, the wave power transmission frame may be configured to include a sliding member position changing structure capable of changing the distance from the binding joint to the sliding member.

In one embodiment of the present invention, one end of the linear reciprocating cylinder part is bound by a hinge structure with one end of the pendulum movement part, and the other end of the linear reciprocating cylinder part communicates with a hydraulic tank mounted on or inside the floating support part. It is bound by a hinge structure, and the hydraulic tank may be configured to communicate with the power generation unit.

In this case, the power generation unit may include a hydraulic motor that is communicated by a hydraulic pipe so as to receive hydraulic pressure of a fluid stored in the hydraulic tank, and generates a rotational motion by hydraulic pressure transmitted by the hydraulic pipe; A flywheel mounted on one end of a rotating shaft rotated by the hydraulic motor and driven to rotate; And a generator mounted on the other end of the rotating shaft rotating by the hydraulic motor to convert rotational kinetic energy into electrical energy.

As described above, according to the wave generator of the present invention, by providing a wave power absorption unit, a pendulum movement unit, a linear reciprocating cylinder unit, an energy form conversion unit, and a power generation unit of a specific structure, the vertical wave having various wave heights, periods, and directions Wave power including a configuration that can effectively absorb reciprocating kinetic energy using a stable structure, and convert the absorbed vertical reciprocating kinetic energy into rotational motion using a linear reciprocating cylinder part and a hydraulic motor to significantly improve power generation efficiency. Generators can be provided.

1 is a front view showing a wave generator according to the prior art.
2 is a perspective view showing a wave generator according to an embodiment of the present invention.
3 is a diagram showing a state in which the wave generator of FIG. 2 is applied to the sea.
Figure 4 is a diagram showing the underwater state of the wave generator of Figure 3;
5 is a partially enlarged view showing a part of the wave power generator shown in FIG. 2.
6 is a schematic diagram showing a wave power absorbing unit and a pendulum movement unit of a wave power generator according to an embodiment of the present invention.
7 is a schematic diagram showing a pendulum motion part of a wave generator according to an embodiment of the present invention.
8 is a perspective view showing a linear reciprocating cylinder according to an embodiment of the present invention.
9 is a schematic diagram showing the operating principle of the linear reciprocating cylinder unit and the power generation unit of Fig. 8;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to this, terms or words used in the present specification and claims are not limited to a conventional or dictionary meaning and should not be interpreted, but should be interpreted as meanings and concepts consistent with the technical idea of the present invention.

Throughout this specification, when a member is said to be located "on" another member, this includes not only the case where the member is in contact with the other member, but also the case where another member exists between the two members. Throughout this specification, when a certain part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

Figure 2 is a perspective view showing a wave power generator according to an embodiment of the present invention is shown, Figure 3 is a picture showing a state in which the wave power generator of Figure 2 is applied to the sea, and Figure 4 is the wave power generator of Figure 3 A picture showing the underwater state of is shown.

Referring to these drawings, the wave power generator 100 according to the present embodiment includes a wave power absorbing unit 110 of a specific structure, a pendulum motion unit 120, a linear reciprocating cylinder unit 130, an energy form conversion unit 140, and By providing the power generation unit 150, the vertical reciprocating kinetic energy of waves having various wave heights, periods, and directions can be effectively absorbed by using a stable structure, and the absorbed vertical reciprocating kinetic energy can be effectively absorbed with the linear reciprocating cylinder unit 130 It is possible to provide a wave generator including a configuration capable of remarkably improving power generation efficiency by converting it into rotational motion using the hydraulic motor 151.

Hereinafter, each component constituting the wave generator 100 according to the present embodiment will be described in detail with reference to the drawings.

5 is a partial enlarged view showing a part of the wave power generator shown in FIG. 2, and FIG. 6 is a schematic diagram showing a wave power absorbing unit of the wave power generator according to an embodiment of the present invention, and FIG. 7 A schematic diagram showing a pendulum motion part of a wave generator according to an embodiment of the present invention is shown.

Referring to these drawings, the wave power absorbing unit 110 according to the present embodiment is a pair of floating support units that are spaced apart from each other by a link structure so as to be able to float on the sea level and change the vertical position according to the wave height of the wave. It may be a configuration including (111a, 111b).

Specifically, the wave power absorption unit 110 may have a configuration including a first floating support part 111a, a second floating support part 111b, a first horizontal link 113a, and a second horizontal link 113b. The first floating support part 111a is a structure that floats on the sea level, and may have a structure in which a vertical support frame 112a extending by a predetermined height is mounted on the top. The second floating support part 111b is a structure that floats on the sea level, and may have a structure in which a vertical support frame 112b extending by a predetermined height is mounted on the top.

The first horizontal link 113a includes a first floating support part 111a and a second floating support part 111b so that the distance between the first floating support part 111a and the second floating support part 111b is separated by a predetermined distance. Both ends of each of the vertical support frames (112a, 112b) are bound by a hinge structure.

The second horizontal link 113b has a first floating support part 111a and a second floating support part 111b so that the distance between the first floating support part 111a and the second floating support part 111b is separated by a predetermined distance. It is a structure in which both ends are bound to each vertical support frame by a hinge structure. At this time, the second horizontal link (113b) is arranged to be spaced apart from the first horizontal link (113a) by a predetermined height to form a four-fold link structure together with the two vertical support frames (112a, 112b) and the first horizontal link (113a). It is desirable to form.

In this case, as shown in FIG. 6, the first floating support part 111a and the second floating support part 111b floating on the sea level are reciprocated up and down by the wave, and at this time, two vertical support frames 112a , 112b), the fourth link structure formed by the first horizontal link 113a and the second horizontal link 113b induces a reciprocating motion as illustrated in FIG. 6.

On the other hand, as shown in FIGS. 2 to 4, the first floating support portion 111a and the second floating support portion 111b according to the present embodiment, the floating body portion 114 of a specific structure, the posture maintenance blade 115 ) And a reinforcing wire 116 may be included.

Specifically, the floating body portion 114 may have a planar plate-shaped structure with a built-in material floating on the sea surface.

The attitude maintaining blade 115 is a plate-shaped structure extending downward from both sides of the floating body portion 114 by a predetermined length, and sets a specific attitude of the floating body portion 114 against the reciprocating movement of the floating body portion 114. Can be maintained. It goes without saying that the posture maintenance blade 115 may have an airfoil structure or a streamlined structure in a transverse cross-section, and may be changed into various structures according to an application environment and an operator's intention.

In some cases, a driving force providing unit may be mounted inside or on one side of the floating body unit 114 to provide power to the variable blade unit. At this time, the blade variable portion is a configuration that is mounted inside or on one side of the floating body portion 114 and may change the direction of the posture maintaining blade 115.

In addition, by connecting the upper ends of the vertical support frames 112a and 112b from one side or the upper surface of the floating body portion 114 to each other using a reinforcing wire 116 to stably fix the position of the vertical support frame.

The energy form conversion unit 140 may be configured to include a pendulum movement unit 120 and a linear reciprocating cylinder unit 130 having a specific structure.

Specifically, the pendulum movement unit 120, as a configuration mounted on each of the floating support (111a, 111b), the pendulum movement according to the angle change of the link structure according to the height difference of the pair of floating support (111a, 111b) Structure.

More specifically, as shown in FIGS. 5 to 7, the pendulum movement unit 120 includes a wave power transmission frame 121 of a specific structure, a pendulum rod 122, and a pendulum weight 123 I can.

The wave power transmission frame 121 is rotatably mounted on the binding joint J1 of the second horizontal link 113b and the vertical support frames 112a and 112b to interlock with the rotational motion of the second horizontal link 113b to be. At this time, the wave power transmission frame 121 is a structure that extends to form a predetermined angle with the extending direction of the second horizontal link 113b, and slides at one end along the sliding rail 125 of the pendulum rod 122 It is preferable that the member 124 is mounted.

More specifically, the sliding member 124 according to the present embodiment may have a rectangular ring or a circular ring structure surrounding a part of the outer circumferential surface of the pendulum rod 122 as shown in FIGS. 5 to 7. At this time, the sliding member 123 is preferably bound by the wave power transmission frame 121 and the hinge coupling portion (J2).

The pendulum rod (122, pendulum rod) is a configuration that is bound by a hinge structure (J3) to enable pendulum movement on the upper portion of the vertical support frame (112a, 112b), the sliding rail 125 in a direction parallel to the extension It may be a formed structure.

In addition, the pendulum weight 123 is a configuration mounted on the lower end of the pendulum rod 122, of course, can be changed and applied in various forms.

The height of the first floating support part 111a and the second floating support part 111b changes according to the wave height, and accordingly, the movement of the second horizontal link 113b forming a four-fold link structure occurs. At this time, the wave power transmission frame 121 interlocking with the second horizontal link 113b rotates by a predetermined angle with respect to the binding joint J1. The sliding member 124 (position J2) mounted at one end of the wave power transmission frame 121 is slidingly driven along the sliding rail 125 formed on the pendulum rod 122, and as a result, the pendulum movement of the pendulum weight 123 occurs. Is done.

In some cases, the wave power transmission frame 121 may further include a sliding member position changing structure capable of changing the distance from the binding joint J1 to the sliding member 124, J2 position. In order to realize a pendulum motion having an amplitude within a certain range even at various wave heights of waves, a structure for changing the position of the sliding member can be used. Specifically, the shorter the distance from the binding joint (J1) to the sliding member (124, J2 position), the narrower the amplitude of the pendulum motion can be implemented, and from the binding joint (J1) to the sliding member (124, J2 position) The longer the distance, the wider the amplitude of the pendulum motion can be realized. That is, the higher the wave height of the blue wave is, the shorter the distance from the binding joint (J1) to the sliding member 124, J2 is, and the lower the wave height of the wave is, the sliding member (124, J2 position) from the binding joint (J1) By changing the distance to long, it is possible to implement a pendulum motion having an amplitude within a certain range even at various wave heights of waves.

In this case, by providing a detection sensor for detecting a wave height of a blue wave and a driving device for correcting the position of the sliding member 124 based on the detected data, the corresponding operation can be implemented as an automated system.

8 is a perspective view showing a linear reciprocating cylinder unit according to an embodiment of the present invention, and Fig. 9 is a schematic diagram showing the operating principle of the linear reciprocating cylinder unit of FIG.

Referring to these drawings, the linear reciprocating cylinder unit 130 according to the present embodiment is configured to convert the reciprocating motion of the pendulum motion unit 120 into a linear reciprocating motion.

Specifically, one end of the linear reciprocating cylinder unit 130 is bound by the one end of the pendulum motion unit 120 and the hinge structure 131. At the same time, the other end of the linear reciprocating cylinder unit 130 is preferably bound by a hinge structure 132 communicating with the hydraulic tank 133 mounted on or inside the floating support unit. At this time, the hydraulic tank 133 is in communication with the power generation unit 150.

The power generation unit 150 according to the present embodiment is a configuration including a hydraulic motor 151, a flywheel 152 and a generator 153 performing a specific role, and the hydraulic change generated from the linear reciprocating cylinder unit 130 Can be used to carry out power generation.

Specifically, the hydraulic motor 151 is communicated by the hydraulic pipe 134 so as to receive the hydraulic pressure of the fluid stored in the hydraulic tank 133, and rotated by the hydraulic pressure transmitted by the hydraulic pipe 134 It can cause movement.

The hydraulic motor is a device that receives hydraulic oil and rotates a drive shaft, and examples thereof include a gear motor, an axial piston motor, and a radial piston motor, but are not limited thereto. Since the specific operating principle of the hydraulic motor is a known technology, it will be omitted in this patent specification.

The flywheel 152 may be mounted on one end of a rotating shaft rotated by a hydraulic motor 151 and driven to rotate.

In addition, the generator 153 may be mounted on the other end of the rotating shaft rotated by the hydraulic motor 151 to convert rotational kinetic energy into electrical energy.

As described above, according to the wave generator of the present invention, the wave power absorption unit 110, the pendulum movement unit 120, the linear reciprocating cylinder unit 130, the energy form conversion unit 140, and the power generation unit 150 of a specific structure. ), the vertical reciprocating kinetic energy of waves having various wave heights, periods, and directions can be effectively absorbed by using a stable structure, and the absorbed vertical reciprocating kinetic energy can be effectively absorbed by the linear reciprocating cylinder unit 130 and the hydraulic motor 151 ) Can be used to provide a wave generator including a configuration capable of remarkably improving power generation efficiency by converting it into rotational motion.

In the above detailed description of the present invention, only specific embodiments according thereto have been described. However, it should be understood that the present invention is not limited to a particular form mentioned in the detailed description, but rather, it is understood to include all modifications, equivalents, and substitutes within the spirit and scope of the present invention as defined by the appended claims. Should be.

That is, the present invention is not limited to the specific embodiments and description described above, and any person having ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims, various modifications are implemented. It is possible, and such modifications will fall within the protection scope of the present invention.

100: wave generator
110: wave power absorption unit
111a: first floating support
111b: second floating support
112a, 112b: vertical support frame
113a: first horizontal link
113b: second horizontal link
114: floating body
115: posture maintenance blade
116: reinforcing wire
120: pendulum exercise unit
121: wave power transmission frame
122: pendulum rod
123: pendulum weight
124: sliding member
125: sliding rail
130: linear reciprocating cylinder part
131: hinge structure
132: hinge structure
133: hydraulic tank
134: hydraulic pipe
140: energy form conversion unit
150: power generation department
151: hydraulic motor
152: flywheel
153: generator
J1: binding joint between the second horizontal link 113b and the vertical support frame 112a, 112b
J2: hinged portion of the sliding member 123 and the wave power transmission frame 121
J3: The hinge structure of the pendulum movement center of the pendulum rod 122

Claims (5)

A wave power absorbing unit 110 including a pair of floating support parts 111a and 111b that are floating on the sea level and are bonded to each other by a predetermined distance apart from each other by a link structure so that the vertical position can be changed according to the wave height of the wave;
The pendulum movement unit 120, and the pendulum movement unit 120, which are mounted on each of the floating support parts 111a and 111b and perform a pendulum movement according to a change in the angle of the link structure according to the height difference between the pair of floating support parts 111a and 111b. Energy form conversion unit 140 including a linear reciprocating cylinder unit 130 for converting the reciprocating motion of) into a linear reciprocating motion; And
It is mounted adjacent to the linear reciprocating cylinder part 130 and generates a rotational motion through hydraulic change generated by the linear reciprocating motion of the linear reciprocating cylinder part 130, and then converts the generated rotational kinetic energy into electric energy. Power generation unit 150;
Wave power generator comprising a.
The method of claim 1,
The wave power absorbing unit 110,
A first floating support part 111a floating on the sea level and mounting a vertical support frame 112a extending at the top by a predetermined height;
A second floating support part 111b floating on the sea level and mounting a vertical support frame 112b extending at an upper portion thereof by a predetermined height;
The vertical support frame 112a of each of the first floating support part 111a and the second floating support part 111b so that the distance between the first floating support part 111a and the second floating support part 111b is separated by a predetermined distance, 112b) the first horizontal link (113a) bound by a hinge structure at both ends; And
Both ends of each of the first floating support part 111a and the second floating support part 111b are vertically supported so that the distance between the first floating support part 111a and the second floating support part 111b is separated by a predetermined distance. It is bound by a hinge structure and is arranged spaced apart from the first horizontal link 113a by a predetermined height to form a four-fold link structure together with the two vertical support frames 112a and 112b and the first horizontal link 113a. 2 horizontal link (113b);
Wave power generator comprising a.
The method of claim 2,
The pendulum exercise unit 120,
The second horizontal link (113b) and the vertical support frame (112a, 112b) is mounted so as to be rotatable to the binding joint (J1) to interlock with the rotational motion of the second horizontal link (113b), the second horizontal link (113b) A wave power transmission frame 121 having a sliding member 124 that slides along the sliding rail 125 of the pendulum rod 122 at one end of the structure extending to form a predetermined angle with the extending direction of the pendulum rod 122;
A pendulum rod 122 that is bound by a hinge structure J3 on the upper part of the vertical support frames 112a and 112b to enable a pendulum movement, and has a sliding rail 125 formed in a direction parallel to the extension length direction ; And
A pendulum weight 123 mounted on the lower end of the pendulum rod 122;
Wave power generator comprising a.
The method of claim 1,
One end of the linear reciprocating cylinder part 130 is bound by one end of the pendulum motion part 120 and a hinge structure 131,
The other end of the linear reciprocating cylinder unit 130 is bound by a hinge structure 132 communicating with a hydraulic tank 133 mounted on or inside the floating support unit,
The hydraulic tank 133 is a wave generator, characterized in that in communication with the power generation unit 150.
The method of claim 4,
The power generation unit 150,
The hydraulic motor 151 communicates with the hydraulic pipe 134 to receive the hydraulic pressure of the fluid stored in the hydraulic tank 133 and generates a rotational motion by the hydraulic pressure transmitted by the hydraulic pipe 134 ;
A flywheel 152 mounted on one end of a rotating shaft rotated by the hydraulic motor 151 and driven to rotate; And
A generator 153 mounted on the other end of the rotating shaft rotated by the hydraulic motor 151 to convert rotational kinetic energy into electrical energy;
Wave power generator comprising a.

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