KR101842911B1 - Tidal current power generation plant - Google Patents

Abstract

Disclosed is a tidal current power generator. The tidal current power generator according to the present invention is formed with a flow path through which seawater passes in a guide unit, and is formed to be inclined in a gradually lowered shape toward both sides from the central portion of a guidance plate where seawater flows. In addition, the central portion of the guidance plate is located on an identical surface with the seawater surface, and the upper surface of the flow path is opened. Then, seawater introduced into one side of the flow path and discharged through the other side of the flow path has increased flow rate by being expanded while passing through the central portion of the guidance plate. A rotation body is installed in a portion of the guidance plate where the flow rate of the seawater increases such that the rotation body rotates at a high speed. Accordingly, power generating efficiency can be improved.

Description

{TIDAL CURRENT POWER GENERATION PLANT}

The present invention relates to an algae generator that generates electricity using the flow of seawater.

Today, research and development on renewable energy is in full swing, and there is no worry of exhaustion, not only renewal but also environmental pollution. One of the generators that can produce renewable energy is a tidal generator that produces electric energy using the flow of seawater.

Generally, the tidal generator includes a rotating shaft that is rotatably installed, a blade that is formed on an outer circumferential surface of the rotating shaft and rotates the rotating shaft based on the rotation of the rotating shaft by a drag against the flow of seawater, And a capacitor for storing the generated electricity.

If the flow velocity of the seawater is high, the rotating speed of the rotating shaft is increased, so that the power generation efficiency can be improved. For the above reasons, various types of tidal generators capable of increasing the flow rate of seawater are being researched and developed.

However, since the tidal generator is located below the sea surface and is submerged in seawater, there is a limit to increase the flow rate below the sea surface.

Prior art relating to the tidal generator is disclosed in Korean Patent Laid-Open Publication No. 10-2013-0016783 (February 19, 2013).

Korean Patent Laid-Open Publication No. 10-2013-0016783 (Algae Generating Device)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tidal generator capable of solving all the problems of the prior art.

Another object of the present invention is to provide an algae generator capable of enhancing the power generation efficiency by increasing the flow rate of seawater.

According to an aspect of the present invention, there is provided an algae generator comprising: a float floating on a sea surface; a guide unit supported on the float to form a passage through which seawater flows; The guide unit is rotatably supported on an outer portion of the guide unit and generates a rotational force for generating electricity by rotating by the flow of seawater. The guide unit is formed in a shape that is gradually lowered from the center to both ends, And the central portion of the guide unit forming the flow path is located on the same plane as the sea surface.

The tidal generator according to the embodiment of the present invention is formed such that a flow passage for passing seawater is formed inside the guide unit and is inclined downward toward the both sides with respect to the center of the guide plate through which the seawater flows. The central portion of the guide plate is positioned on the same plane as the sea surface, and the upper surface of the flow path is opened. Then, as the seawater flowing into one side of the flow path and discharged to the other side passes through the center portion side of the guide plate, it expands and the flow rate increases. However, since the rotating body is installed at the portion of the guide plate where the flow rate of the seawater is increased, the rotating body rotates at a high speed. As a result, the power generation efficiency can be improved.

1 is a perspective view of an algae generator according to an embodiment of the present invention;
FIG. 2 is an enlarged perspective view of the guide unit and the rotating body shown in FIG. 1; FIG.
Fig. 3 is a partially exploded perspective view of Fig. 2; Fig.
Fig. 4 is a side sectional view of Fig. 2; Fig.
5 is an enlarged perspective view of the portion "A"
6 is a partially exploded perspective view of a guide unit according to another embodiment of the present invention;

It should be noted that, in the specification of the present invention, the same reference numerals as in the drawings denote the same elements, but they are numbered as much as possible even if they are shown in different drawings.

Meanwhile, the meaning of the terms described in the present specification should be understood as follows.

The word " first, "" second," and the like, used to distinguish one element from another, are to be understood to include plural representations unless the context clearly dictates otherwise. The scope of the right should not be limited by these terms.

It should be understood that the terms "comprises" or "having" does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It should be understood that the term "at least one" includes all possible combinations from one or more related items. For example, the meaning of "at least one of the first item, the second item and the third item" means not only the first item, the second item or the third item, but also the second item and the second item among the first item, Means any combination of items that can be presented from more than one.

It should be understood that the term "and / or" includes all possible combinations from one or more related items. For example, the meaning of "first item, second item and / or third item" may include not only the first item, the second item or the third item but also two of the first item, Means a combination of all items that can be presented from the above.

It is to be understood that when an element is referred to as being "connected or installed" to another element, it may be directly connected or installed with the other element, although other elements may be present in between. On the other hand, when an element is referred to as being "directly connected or installed" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

Hereinafter, a tidal power generator according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an algae generator according to an embodiment of the present invention.

The tidal power generator 100 according to the present embodiment can generate electricity using the flow of seawater and includes a floating body 110, a guide unit 130, and a rotating body 150 can do. The tidal power generator 100 according to the present embodiment can generate renewable energy without affecting the surrounding ecosystem because it is generated using the flow of seawater.

The float 110 may float above sea level, and may include a floating sea structure or the like. When the float 110 is provided as a floating structure, a driving unit for moving the float 110 may be installed in the float 110.

The guide unit 130 and the rotating body 150 will be described with reference to Figs. 1 to 4. Fig. FIG. 2 is an enlarged perspective view of the guide unit and the rotating body shown in FIG. 1, FIG. 3 is a partially exploded perspective view of FIG. 2, and FIG. 4 is a side sectional view of FIG.

As shown in the figure, the guide unit 130 can be supported by the float 110, and the flow path 130a through which the seawater passes can be formed while guiding the flow of the seawater. At this time, the guide unit 130 forming the flow path 130a may be inclined downward from the central portion toward the both end portions. The central portion of the guide unit 130 forming the flow path 130a is preferably located on the same plane as the sea surface.

The guide unit 130 may include a support plate 131, a guide plate 133, a first side plate 135 and a second side plate 137.

The support plate 131 may have a predetermined length and be formed flat.

The guide plate 133 may be supported on the upper surface of the support plate 131 and may be inclined downwardly from the center toward the both ends. A support rib 138 may be provided between the guide plate 133 and the support plate 131 so that the guide plate 133 bent and tilted with respect to the center portion can be supported by the support plate 131. [

The guide plate 133 may form the channel 130a, and the center of the guide plate 133 may be positioned on the same plane as the sea surface. Here, the fact that the center portion of the guide plate 133 is located on the same plane as the sea surface can cause the sea level to be formed by waves, so that the center portion of the guide plate 133 can be disposed within a range of normal wave height Will be self-evident.

The guide plates 133 may be formed symmetrically on both sides with respect to the center. Since the guide plate 133 is formed symmetrically with respect to the center portion, it can be used when seawater is introduced from the left side and discharged to the right side, or from the right side to the left side. That is, the tidal power generator 110 of the present invention can be used without changing its position even when the tidal direction changes, such as tide and ebb.

The first side plate 135 may be provided on one side of the support plate 131 and one side of the guide plate 133 and the second side plate 137 may be provided on the other side of the support plate 131, As shown in FIG. Thus, the first side plate 135 and the second side plate 137 can form side surfaces of the flow path 130a. Then, the flow path 130a and both side surfaces are formed by the guide plate 133, the first side plate 135 and the second side plate 137, and the upper surface of the flow path 130a is opened.

The rotating body 150 may be rotatably supported by a portion outside the center of the guide unit 130 forming the flow path 130a and may generate a rotational force for generating electricity while rotating by the flow of seawater .

The rotating body 150 may include a rotating shaft 151 and a blade 155.

The rotary shaft 151 is perpendicular to the flow of the seawater, and one end side and the other end side of the rotary shaft 151 can be supported by the first side plate 135 and the second side plate 137, respectively. A bearing 158 for supporting the rotary shaft 151 may be installed at a portion of the first side plate 135 and the second side plate 137 where the rotary shaft 151 is supported so that the rotary shaft 151 can rotate smoothly have. The rotary shaft 151 may be connected to a power generating unit 160 (see FIG. 1) including a field generating electricity and an armature and a capacitor for storing the generated electricity.

A plurality of blades 155 may be radially provided on the outer circumferential surface of the rotary shaft 151. The blade 155 can rotate the rotating shaft 151 while revolving around the rotating shaft 151 by the drag force against the flow of the seawater. Then, the rotating shaft 151 is rotated by the blade 155, and the power generating unit 160 can generate power by the rotation of the rotating shaft 151.

Seawater is incompressible. When the guide unit 130a is completely submerged under the sea surface, there is almost no change in the flow velocity of the seawater flowing into the flow passage 130a, the flow velocity of the seawater flowing through the flow passage 130a and the flow velocity of the seawater discharged from the flow passage 130a none.

In the tidal power generator according to the present embodiment, the upper surface of the oil passage 130a of the guide unit 130 is opened, and the center side of the guide plate 133 forming the oil passage 130a is positioned on the same plane as the sea surface. Then, when the seawater flowing into the one end side of the flow pathway 130a passes through the central portion side of the flow pathway 130a, the flow rate can be increased while expanding.

Further, the rotating body 150 is provided on the side of the increased flow path 130a and is rotated at a high speed, so that the power generation efficiency can be improved.

Experimental Example

1. Experimental conditions

The length of the support plate 131 is 20 m and the height from the support plate 131 to the center of the guide plate 133 is 2.77 m so that the support plate 131 and the guide plate 133 form 15.5 °, 133) and discharged to the left side. The central portion of the guide plate 133 was positioned on the same plane as the sea surface, and the flow rate of the source stream was 0.5 m / sec.

Thus, the flow rate along each point of the guide plate 133 was measured five times.

At this time, the position C is the central portion of the guide plate 133, and the positions P1 to P5 are the positions of the left portion with respect to the center of the guide plate 133. More specifically, the position P1 is a point where the height from the support plate 131 to the guide plate 133 is 2.65 m, the position P2 is a position where the height from the support plate 131 to the guide plate 133 is 2.50 m, The position P4 from the support plate 131 to the guide plate 133 is 2.25 m and the position P4 is the position where the height from the support plate 131 to the guide plate 133 is 1.95 m and the position P5 is the position where the height from the support plate 131 to the guide plate 133 133) is 1.70 m in height.

2. Measured flow rate

location Minimum flow rate (m / sec) Maximum flow rate (m / sec) Average flow rate (m / sec) C 1.2 1.5 1.3 P1 1.3 1.5 1.35 P2 1.5 1.8 1.6 P3 1.5 1.9 1.8 P4 1.3 1.6 1.4 P5 0.6 1.0 0.8

As a result of measuring the flow rate at each point, the lowest flow velocity, the maximum flow velocity and the average flow velocities at position C were 1.2 m / sec, 1.5 m / sec and 1.3 m / sec, The minimum flow velocity, the maximum flow velocity and the average flow velocities at the position P2 were 1.5 m / sec, 1.8 m / sec, and 1.6 m / sec, respectively, at the positions P2, The minimum flow rate, the maximum flow rate and the average flow rate at the position P5 were 1.3 m / sec, 1.6 m / sec and 1.4 m / sec at the position P5, respectively. m / sec, and the minimum flow velocity, the maximum flow velocity and the average flow velocities at the position P5 were 0.6 m / sec, 1.0 m / sec, and 1.8 m / sec.

That is, the average flow velocity of the source was at the maximum around the position P3. Therefore, if the rotating shaft 151 of the rotating body 150 is disposed on the side of the position P3, the rotating body 150 can rotate at the maximum speed, and the power generation efficiency can be improved. At this time, the blade 155 positioned below the rotary shaft 151 about the rotary shaft 151 may be submerged in seawater.

Similar results were obtained when the angle formed between the support plate 131 and the guide plate 133 was 10 °, 20 ° and 30 °.

In conclusion, it is preferable that the rotating body 150 is installed on the left side of the guide plate 133, assuming that the seawater flows into the right side of the guide plate 133 and is discharged to the left side. More specifically, it is preferable that the support plate 131 and the guide plate 133 form an angle of 10 ° to 30 °. The height from the support plate 131 to the center of the guide plate 133 is H 1, The rotational axis 151 of the rotating body 150 is positioned in a position immediately above the position H1: H2 = 1: 0.75 to 0.85, where H2 is the height from the receiving plate 131 to the guide plate 133 desirable.

The central portion of the guide plate 133 of the guide unit 130 is preferably located on the same plane as the sea surface. However, depending on the extent to which the float 110 is immersed in the seawater, the center portion of the guide plate 133 may not be located on the same plane as the sea surface.

To this end, the guide unit 130 may be installed to be movable up and down relative to the float 110. 1 and 5, both end faces of the first side plate 135 and both end faces of the second side plate 137 are inserted and supported in the float 110 A support rail 112 may be provided.

Teeth are formed on both end surfaces of the first side plate 135 and the second side plate 137 and the first side plate 135 and the second side plate 137 are raised and lowered by using a motor 114 or the like, The guide unit 130 can be raised and lowered.

The tidal generator according to the present embodiment is characterized in that the flow path 130a through which the seawater passes is formed inside the guide unit 130 and the guide plate 133 forming the flow path 130a is gradually lowered As shown in FIG. The central portion of the guide plate 133 is located on the same plane as the sea surface, and the upper surface of the channel 130a is opened. Then, the seawater flowing into one side of the flow path 130a and discharged to the other side expands from the center side of the guide plate 133 to increase the flow velocity. However, since the rotating body 150 is provided at the portion of the guide plate 133 in which the flow velocity of seawater is increased, it rotates at a high speed. As a result, the power generation efficiency can be improved.

FIG. 6 is a partially exploded perspective view of the guide unit according to another embodiment of the present invention, and only differences from FIG. 2 will be described.

The guide unit 230 may further include a supplementary guide plate 239 rotatably installed at both ends of the guide plate 233. The guide unit 230 may include a support plate 231 and a first side plate 235 and a second side plate 235. [ 237 may extend to the auxiliary guide plate 239. [ At this time, the space formed by the support plate 231, the first side plate 235, the second side plate 237 and the auxiliary guide plate 239 is the flow path 230a.

One side of the auxiliary guide plate 239 is rotatably mounted on the guide plate 233 to adjust the amount of seawater flowing into the channel 230a.

That is, when the auxiliary guide plate 239 rotates with respect to the guide plate 233 and is in parallel with the auxiliary guide plate 239 and the guide plate 233, the maximum amount of seawater can be introduced into the flow path 230a. When the auxiliary guide plate 239 rotates with respect to the guide plate 233 and the other end side of the auxiliary guide plate 239 is positioned on the upper side, a relatively small amount of seawater can flow into the flow passage 230a.

The auxiliary guide plate 239 can be rotated by the motor 240 or the like.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of. Therefore, the scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention.

100: bird generator
110: float 112: support rail
114: motor
130: guide unit 131:
133: guide plate 135: first side plate
137: second side plate 138: support rib
130a: Euro
150: rotating body 151: rotating shaft
155: blade
160: Power generation unit
239: Supplemental sign board

Claims (8)

Float floating on sea level;
A guide unit which is supported by the float and forms a passage through which seawater flows; And
And a rotating body rotatably installed on an outer side of a central portion of the guide unit forming the flow path and generating a rotational force for generating electricity while being rotated by the flow of seawater,
The guide unit includes:
Base plate;
A guide plate disposed on the upper portion of the support plate to form the flow passage through which the seawater flows, the guide plate being inclined in such a manner as to be gradually lowered toward the both end portions from the center portion, And
A first side plate and a second side plate which are respectively installed on one side surface of the receiving plate and one side surface of the guide plate and on the other side surface of the receiving plate and on the other side surface of the guide plate, ≪ / RTI &
The base plate is flat,
The angle formed between the support plate and the guide plate is 10 ° to 20 °,
The height from the base plate to the central portion of the guide plate is H1, and the height from the base plate to the guide plate at the portion where the rotational body is installed is H2,
H1: H2 = 1: 0.75 to 0.85. delete The method according to claim 1,
The guide plates are symmetrical on both sides with respect to the center,
When seawater flows into one side of the guide plate and is discharged to the other side,
Wherein the rotating body is supported by the first side plate and the second side plate so as to be positioned at the other side of the guide plate. delete The method according to claim 1,
The rotating body includes:
A rotary shaft which is perpendicular to the flow of seawater and is rotatably supported by the first side plate and the second side plate at one end side and the other end side, respectively; And
And a plurality of blades radially formed on an outer circumferential surface of the rotating shaft and rotating the rotating shaft while revolving around the rotating shaft by a drag force against the flow of the seawater. The method according to claim 1,
Wherein the guide unit further comprises a supplementary guide plate rotatably installed at both ends of the guide plate,
Wherein the support plate, the first side plate, and the second side plate are extended to the auxiliary guide plate. The method according to claim 1,
Wherein the guide unit is installed so as to be movable up and down relative to the float. 8. The method of claim 7,
Wherein the auxiliary fluid is provided with a support rail on which both end faces of the first side plate and both end faces of the second side plate are inserted and supported.

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