KR102617366B1 - Hydropower generator with flow control unit - Google Patents

Abstract

A hydroelectric power generation device with a flow rate control unit according to the present invention includes first and second water turbines installed vertically on a module frame and rotated by flowing water, and a generator that generates power by the rotational force of the first and second water turbines. , It includes a guide that disperses and guides flowing water to the first and second water turbine sides in the width direction of the waterway, respectively,
The first and second water turbines are arranged spaced apart along the water flow direction, are spaced apart in a partially overlapping structure along the width direction of the waterway, and rotate in opposite directions to each other,
The guide is installed biased toward the second water turbine with respect to the first water turbine disposed upstream among the first and second water turbines to disperse flowing water to the first and second water turbine sides, and is installed on the module frame or the external frame supporting it. A flow rate control unit capable of varying the flow rate of the water flowing into the first water turbine side is installed.

Description

Hydropower generator with flow control unit}

The present invention relates to a hydroelectric power generation device, and more specifically, to a hydroelectric power generation device having a flow rate control unit that can adjust the flow rate in the water turbine according to the water quantity.

In general, a hydroelectric power plant produces electricity by rotating a water wheel using the flow energy of running water and using this rotational force to rotate a generator.

Republic of Korea Registered Utility Model Publication No. 20-0480800 (registration date: July 1, 2016) discloses a 'waterway-type small hydro power generation device using discharge water from land-based fish farms.'

The disclosed small hydro power generation device is composed of a water turbine blade section consisting of a water turbine blade that rotates with the water wheel axis by discharge water on each of two water axes installed perpendicular to the discharge water channel, and the water shaft axis is located at the center of the discharge water channel. By being installed side by side and spaced the same distance apart on both left and right sides, the water turbine blades are arranged in a symmetrical structure based on the center of the discharge water channel.

However, in the case of small hydro power generation devices according to the prior art, there is a design limitation in that the symmetrical structure of the water turbine blades is limited to a size of less than 1/2 of the entire waterway width. Therefore, when the waterway width is narrow, the size of each water turbine blade section is also small, thereby reducing the amount of power generation. There is a limit to this, and the water flow can only flow through a narrow gap between the water wheel and the edge of the waterway, so the flow resistance increases rapidly, and there is a problem in that air bubbles are generated between the water wheels with a symmetrical structure, and eddies that increase the water resistance are generated.

Republic of Korea Patent Publication No. 2012-0052459 discloses a hydroelectric power generation system using a waterway, and Korean Patent Publication No. 2017-0109494 discloses a waterway-type hydroelectric power generation device.

Republic of Korea Patent Publication No. 2012-0110270 discloses a transverse flow water turbine installed in a waterway.

In the case of the disclosed water turbine using a conventional waterway, the width of the waterway is limited, so there is a problem in that the flow speed cannot be varied when a certain amount of water flows. Therefore, it is difficult to vary the rotation speed of the water wheel.

Republic of Korea Registered Utility Model Publication No. 20-0480800 Republic of Korea Patent Publication No. 2012-0052459 Republic of Korea Patent Publication No. 2017-0109494 Republic of Korea Patent Publication No. 2012-0110270

The present invention is intended to solve the above problems, and provides a hydroelectric power generation device with a flow rate control unit that can change the rotation of the water wheel and thereby increase the degree of freedom by varying the flow rate regardless of the width of the waterway. 0

In order to achieve the above object, a hydroelectric power generation device having a flow rate control unit of the present invention includes first and second water wheels installed perpendicularly to a module frame installed in a waterway and rotated by the flowing water of the waterway, and the first and second water turbines. It includes a generator that generates power by the rotational force of the water wheel, and a guide that distributes and guides flowing water to the first and second water wheels, respectively;

The first and second water turbines are arranged spaced apart along the water flow direction, are arranged in a partially overlapping structure along the width direction of the waterway, and rotate in opposite directions,

The guide is installed biased toward the second water turbine with respect to the first water turbine disposed upstream among the first and second water turbines, and disperses flowing water to the first and second water turbine sides,

The external frame supporting the module frame is provided with a flow rate control unit that can vary the flow rate of the water flowing into the first water turbine.

In the present invention, each blade of the first and second water turbines has a leading edge portion formed radially perpendicular to the rotation axis, a leading edge portion extending radially from the leading edge portion, and a rotational direction with respect to the leading edge portion. It may include a trailing edge portion bent in the opposite direction.

The guide has an inclined portion inclined toward the first water turbine along the width direction of the water channel with respect to the water flow direction, and is inclined vertically or at a smaller angle than the inclined portion from the inclined portion along the flowing direction toward the second water turbine and moves the water flow direction. Accordingly, it may include a guide panel including an end shorter than the inclined portion.

The inclined portion of the guide panel may be longer than the first aberration toward the upstream along the water flow direction.

The guide is provided at the bottom of the guide panel and may further include a support panel disposed below the first and second water wheels and coupled to the first and second water wheels so that the first and second water wheels can rotate.

The waterway is further provided with an external frame, and one module frame is installed on the inner lower side of the external frame, or a plurality of module frames are installed in a row along the width direction of the waterway or along the water flow direction, The first and second water wheels are installed as a set on the lower side of each module frame, one guide is provided integrally, and one generator may be installed on the upper side of each module frame.

And the flow rate control unit includes first and second angle control axes rotatably installed on both sides of the water turbine of the module frame in a direction parallel to the axis of sorption, and the first and second angle control axes are installed to allow oil flowing into the first water turbine side. It has first and second blades for controlling the speed, and first and second rotation drives installed on the module frame to rotate the first and second angle adjustment sides at a predetermined angle, respectively.

In the hydroelectric power generation device with the flow rate control unit according to the present invention, the first and second water turbines are arranged spaced apart along the width direction of the waterway, are installed spaced apart along the water flow direction, and are arranged to partially overlap along the width direction of the waterway. As the flowing water is distributed to the first and second water turbines by the guide, the degree of freedom in water turbine design can be relatively increased even in narrow waterways. By adjusting the width of the waterway, the flow rate of the water can be adjusted, thereby improving power generation efficiency.

In particular, when the flow rate of running water is relatively low, a decrease in power generation due to the flow speed can be prevented by increasing the flow speed to increase the kinetic energy of the running water.

In addition, in the hydroelectric power generation device according to the present invention, since the first and second water wheels are installed alternately along the width direction of the water channel, even if they rotate in opposite directions, there is no bubbles between the first and second water wheels and vortices that interfere with the rotation of the water wheels. occurrence can be reduced.

1 is a plan view of a hydroelectric power plant with a flow rate control unit according to a first embodiment of the present invention;
Figure 2 is a perspective view showing an excerpt of a module for power generation shown in Figure 1;
Figures 3 and 4 are side views of a hydroelectric power plant with a flow rate control unit installed;

An example of a hydroelectric power plant having a flow rate control unit according to the present invention is shown in Figures 1 to 4.

Referring to the drawings, the hydroelectric power plant according to the present invention includes an external frame 10 and at least one module (M), and each module (M) includes one module frame 20 and one generator ( 30), first and second aberrations (40, 50), and a guide (60).

The external frame 10 may be fixedly installed on the water channel 2 so as to be located above the first and second water turbines 40 and 50. That is, the external frame 10 may be installed in a structure spanning both edges of the waterway 2 along the width direction of the waterway. The external frame 10 is not limited to the above-described embodiment, and can be any structure capable of supporting the module.

The external frame 10 is equipped with the necessary components for hydroelectric power generation, and solar panels may also be installed so that it can also be used for solar power generation.

The modules (M) may be installed one or more in a row along the width direction of the waterway on one external frame (10). Additionally, the modules (M) may be installed one or more in a row along the water flow direction on one external frame (10).

The module frame 20 of each module (M) modules and binds the first and second water wheels 40 and 50, one guide 60, and one generator 30 into one set. The module frame 20 may be detachably coupled to the external frame 10 using a bolt fastening method or the like. Therefore, the number of modules bound to one external frame 10 can be selectively determined depending on the waterway 2 environment, etc.

Each module frame 20 may be fixedly installed on the inner lower side of the external frame 10. Each module frame 20 may be formed as a box structure with an open top. The first and second water wheels (40, 50) and the guide (60) are installed on the lower side of each module frame (20), and the generator (30) and the first and second water wheels (40, 50) are installed on the upper side of each module frame (20). Power transmission elements such as belts, gears, etc. may be installed to transmit rotational force to the generator 30.

The first and second water wheels 40 and 50 are rotated by running water. For convenience of explanation below, among the first and second aberrations 40 and 50, the one located relatively upstream is referred to as the first aberration 40, and the one located relatively downstream is referred to as the second aberration 50.

The first and second water wheels 40 and 50 may have the same structure and size to drive one generator 30. The first and second water wheels 40 and 50 are installed on the module frame 20 vertically in the water and vertically, respectively.

The first and second water turbines 40 and 50 may have a structure in which a plurality of them are stacked in the vertical direction along the vertical length. The first and second water turbines 40 and 50 have a plurality of blades 44 and 54 arranged radially around rotation axes 42 and 52, respectively. Each wing (44, 54) may be composed of a leading edge portion and a trailing edge portion in the radial direction of the rotation axis (42, 52). The leading edge portion is formed in a radial direction from the rotation axes 42 and 52, and the trailing edge portion extends radially from the leading edge portion, but may be bent at a certain angle or a certain curvature in the direction opposite to the rotation direction with respect to the leading edge portion. there is.

In particular, the trailing edge portions of the wings 44 and 54 of the first and second water turbines 40 and 50 can be bent in opposite directions so that the first and second water turbines 40 and 50 can rotate in opposite directions. there is. Accordingly, the first and second water wheels 40 and 50 can be efficiently rotated by the flowing water guided by the guide 60.

These first and second water turbines 40 and 50 are especially arranged to be spaced apart along the width direction of the waterway, and are arranged to be spaced back and forth along the water flow direction and are also arranged in a partially overlapping structure along the width direction of the waterway. That is, in the case of the present invention, the required width along the width direction of the waterway is smaller than when the first and second water wheels (40, 50) are installed in a row, so even in the narrow waterway (2), the first and second water turbines (40) , 50) can be installed together in pairs, and the installable size range of the first and second water wheels (40, 50) can be relatively wide compared to the width of the waterway, enabling power generation above a certain level even in a narrow waterway (2) This is possible.

In addition, the waterway (2) is relatively narrowed by the first and second water turbines (40, 50) only in the part where the first and second water turbines (40, 50) overlap along the water flow direction, and the first and second water turbines (40, 50) In the areas where 40 and 50) do not overlap, the waterway (2) can be secured relatively widely, so the flow resistance is not large. In addition, the flow of water can be stopped between the first and second water wheels 40 and 50 along the width direction of the waterway to prevent bubbles or eddies from forming.

The guide 60 disperses and guides the flowing water toward the first and second water turbines 40 and 50, respectively, and includes a guide panel 62.

The guide panel 62 is installed in parallel with the first water turbine 40 arranged upstream along the width direction of the waterway, and is biased toward the second water wheel 50 along the width direction of the waterway with respect to the first water wheel 40. It is installed to distribute and guide the flowing water to the first and second water channels (40) and (50). That is, the waterway 2 has an area where the first waterwheel 40 is arranged in parallel with the guide panel 62 with respect to the guide panel 62 along the width direction of the waterway, and a second waterwheel on the downstream side of the guide panel 62. It can be divided into an area where (50) is placed.

Furthermore, the guide panel 62 may be composed of an inclined portion and an end portion 62b along the water flow direction.

The inclined portion 62a of the guide panel 62 has a structure inclined at a certain angle or curvature toward the first water turbine 40 along the width direction of the water channel with respect to the flow direction. The inclined portion 62a of the guide panel 62 may be disposed upstream along the water flow direction to be longer than the first water turbine 40. Therefore, since the inclined portion 62a of the guide panel 62 obscures the portion on the side of the second aberration 50 among the first aberrations 40 along the width direction of the waterway, the first aberration 40 along the width direction of the waterway Based on , the flowing water is guided to a part of the first water turbine 40 opposite to the guide panel 62, so that the first water turbine 40 can be efficiently rotated in one direction. Additionally, the flowing water dispersed toward the second water turbine 50 can be smoothly guided toward the second water turbine 50 along the width direction of the waterway by the inclined portion 62a of the guide panel 62. In addition, the second water turbine 50 can also be efficiently rotated in one direction as a portion of the first water turbine 40 side along the width direction of the waterway is covered by the guide panel 62, and flowing water is guided to the opposite portion. .

The end portion 62b of the guide panel 62 is a portion extending from the inclined portion 62a toward the second water turbine 50 along the water flow direction, and is perpendicular to the water flow direction or along the width direction of the water channel with respect to the water flow direction. It has a structure that is inclined toward the first water turbine 40 but at a smaller angle than the inclined portion 62a of the guide panel 62. The end portion 62b of the guide panel 62 may be formed shorter than the inclined portion 62a of the guide panel 62 along the water flow direction. Therefore, flowing water can be induced while appropriately covering the first and second water turbines 40 and 50 by the guide panel 62. Additionally, it is possible to prevent running water from flowing into the unnecessary portion (2a) between the first and second water turbines (40, 50).

The upper end of the guide panel 62 may be coupled to the lower side of the module frame 20 and integrally bound to the module frame 20. Additionally, the guide 60 may further include a support panel 64.

The support panel 64 of the guide 60 is provided at the bottom of the guide panel 62 and is disposed below the first and second water wheels 40 and 50 so that the first and second water wheels 40 and 50 are supported by the bearings. It is coupled so that it can be rotated by, etc. That is, the support panel 64 of the guide 60 is arranged in a horizontal plane in the vertical direction and supports the first and second water turbines 40 and 50 so that they can rotate.

And the external frame 10 supporting the module frame is installed with a water turbine module, that is, a flow rate control unit 70 that can adjust the flow rate to the water wheel side.

And the flow rate control unit 70 includes first and second angle control axes 71 and 75 rotatably installed in a direction parallel to the axis of sorption on both sides of the water wheel on the module frame or the external frame 10 supporting it. And, first and second blades (72) (76) installed on the first and second angle adjustment shafts (71) and (75) to control the speed of water flowing into the first water turbine side, and the external frame (10) ) or installed on the module frame 20 and provided with first and second rotation driving parts 73 and 77 for rotating the first and second angle adjustment axes 71 and 72 respectively at a predetermined angle.

It is preferable that the first and second rotation drives use geared motors, and the first and second blades (72) and (76) installed on the first and second angle adjustment shafts (71) and (75), respectively, rotate with respect to the water channel. It is installed on both sides and has a width that can guide water to the water wheel.

The effects of the hydroelectric power generation device having the flow rate control unit according to the present invention configured as described above will be described in detail as follows.

First, the flowing water is distributed to the first water turbine 40 side and the second water turbine 50 side along the width direction of the waterway on the guide panel 62. The flowing water distributed toward the first water turbine 40 is guided to the opposite side of the guide 60 along the width direction of the waterway based on the first water turbine 40, and the first water turbine 40 rotates clockwise with respect to the water flow direction. do. The flowing water distributed toward the second water turbine (50) flows past the guide panel (62) and is then guided to the opposite side of the guide (60) along the width direction of the waterway based on the second water wheel (50). ) is rotated counterclockwise relative to the direction of water flow. The rotational force of the first and second water wheels 40 and 50 is transmitted to the generator 30 to produce electric power.

Since the first and second water turbines 40 and 50 installed in the water channel 2 are arranged alternately in the water flow direction, design freedom of the first and second water turbines 40 and 50 can be increased, and the first and second water turbines 40 and 50 can be As the numbers 40 and 50 rotate in opposite directions, interference in the water flow direction can be reduced, thereby reducing the generation of bubbles and vortices. In particular, by being installed in the width direction of the water channel 2, the flow speed of water flowing through the water channel is reduced, thereby preventing the problem of a decrease in the rotational force of the water wheel.

As described above, in the process of generating power by water flowing through the waterway, when the speed of water flowing through the waterway for power generation is relatively low, the first and second rotary drives (73) (77) are driven to drive the first and second blades ( 72) Rotate (76) so that the water can flow to the first water turbine (40). In this way, the flow area of the water flowing through the waterway is reduced and the flow speed becomes relatively fast, thereby improving power generation efficiency.

As described above, the technical ideas described in the embodiments of the present invention can be implemented independently or in combination with each other. In addition, the present invention has been described through the embodiments described in the drawings and detailed description of the invention, but these are merely illustrative, and various modifications and other equivalent embodiments can be made by those skilled in the art. possible. Therefore, the technical protection scope of the present invention should be determined by the attached patent claims.

Claims (7)

ㅁFirst and second water turbines installed perpendicularly to the module frame installed in the waterway and rotated by running water, a generator that generates power by the rotational force of the first and second waterwheels, and flowing water in the width direction of the waterway It includes a guide that distributes and guides the first and second aberration sides, respectively,
The first and second water turbines are arranged spaced apart along the water flow direction, are spaced apart in a partially overlapping structure along the width direction of the waterway, and rotate in opposite directions to each other,
The guide is installed biased toward the second water turbine with respect to the first water turbine disposed upstream among the first and second water turbines to disperse flowing water to the first and second water turbine sides, and is installed on the module frame or the external frame supporting it. A hydroelectric power generation device with a flow rate control unit, characterized in that a flow rate control unit capable of varying the flow rate of water flowing into the first water turbine is installed. In claim 1,
Each wing of the first and second water turbines has a leading edge formed radially perpendicular to the rotation axis, and a trail extending radially from the leading edge and curved in a direction opposite to the rotation direction with respect to the leading edge. A hydroelectric power generation device with a flow rate control unit comprising a ring edge portion. In claim 1,
The guide has an inclined portion inclined toward the first water turbine along the width direction of the water channel with respect to the water flow direction, and is inclined vertically or at a smaller angle than the inclined portion from the inclined portion along the flowing direction toward the second water turbine and moves the water flow direction. Accordingly, a hydroelectric power generation device having a flow rate control unit including a guide panel including an end shorter than the inclined portion. In claim 3,
A hydroelectric power generation device with a flow rate control unit, characterized in that the inclined portion of the guide panel is longer than the first water turbine toward the upstream along the flow direction. In claim 3,
The guide is provided at the bottom of the guide panel, and is disposed on the lower side of the first and second water turbines and further includes a support panel coupled to allow the first and second water turbines to rotate. Hydroelectric power generation with a flow rate control unit Device. In claim 1,
The waterway is further provided with an external frame that supports the module frame,
The first and second water turbines are installed as a set on the lower side of each module frame, one guide is provided integrally, and a flow rate control unit is installed on the upper side of each module frame. A hydroelectric power plant. In claim 1,
The flow rate control unit includes first and second angle control axes rotatably installed on both sides of the water turbine of the module frame in a direction parallel to the axis of sorption, and the first and second angle control axes are installed to control the flow of water flowing into the first water turbine. Flow rate control comprising first and second blades for controlling the speed, and first and second rotation drives installed on the module frame to rotate the first and second angle adjustment sides at a predetermined angle, respectively. Hydroelectric power plant with units.

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