KR20200028795A - Small hydropower generation system using fish farm - Google Patents

Abstract

The present invention provides a small hydropower system including: an inlet line for introducing seawater into a farm; an outlet line for discharging water from the farm; an inlet pump installed on the upstream side of the inlet line; an outlet pump installed on the upstream side of the outlet line; small hydropower generation devices which are installed at an interval in a lengthwise direction at one or more installation sections selected from a first upstream section from the inlet pump in the inlet line and a second downstream section from the outlet pump in the outlet line; and a device for storing electrical energy produced by the small hydropower generation devices.

Description

Small Hydro Power Generation System Using Farms {SMALL HYDROPOWER GENERATION SYSTEM USING FISH FARM}

An embodiment of the present invention relates to a small-sized power generation system that generates electricity using water (seawater) used for farming aquatic plants and animals in an on-shore tank farm.

Generally, small hydro power refers to small-scale hydro power with a capacity of 10,000 km to less than 15,000 km. This small hydro power generation is not very different from the general large-scale hydro power generation in principle, but considering the fact that the large-scale hydro power has a very negative impact on the environment, it is harmonized with local regional conditions and technically simple hydro power. It can be called development.

Since this small-scale power generation is clean energy and has a high energy density compared to other types of renewable energy sources, it is evaluated as an existing resource with great development value, and technology development and development support projects focus on developed countries such as the United States and Europe. As it has already been actively progressing.

In addition, small-scale power generation is evaluated as a representative eco-friendly low-carbon green technology as it has less CO2 emissions than other energy sources, and it is an energy source that belongs to the higher energy production per unit capacity among new and renewable energy. It is a practical energy with a long history and relatively low dependence on raw materials abroad.

Looking at the previous devices or systems for small-scale power generation, mechanical energy of aberrations and water turbines rotatably installed by the potential energy of water flowing along the waterways in waterways (clearing, piping, rivers, etc.) is converted into electrical energy (power). It includes a generator (rotor, stator).

However, since the devices or systems up to the previous, the generator is axially connected to the aberration or is disposed in a separate space from the aberration, it is impossible or very difficult to apply in the middle of the pipe.

Moreover, even if a plurality of aberrations are applied to the piping, the potential energy of the water flowing along the piping becomes steeper toward the downstream, unless the drop between the upstream and the downstream is relatively large in the piping. Since it is weakened, there is a problem that the amount of power generation is small compared to the number of installations of aberrations. That is, in the water flowing along the pipe, the impeller of the aberration acts only as a resistance to significantly reduce the flow rate of the water, so, unlike the aberration disposed on the upstream side, power generation in the case of the aberration disposed on the downstream side relatively There is a problem that the efficiency becomes extremely bad.

Republic of Korea Registered Patent Publication No. 10-1341860 (2013.12.17.) Republic of Korea Utility Model Publication No. 20-0480800 (2016.07.07.) Republic of Korea Registered Patent Publication No. 10-1654899 (2016.09.07.) Republic of Korea Patent Publication No. 10-2017-0116915 (2017.10.20.) Republic of Korea Registered Patent Publication No. 10-1784493 (2017.11.06.)

The embodiments of the present invention are easily applicable to piping for introducing water (seawater) to aquaculture plants or discharging discharged water from aquaculture plants, and more advantageous hydroelectric power generation in terms of reducing water flow velocity (potential energy of water) and reducing width. The purpose is to provide a system.

The problem to be solved is not limited to this, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, an inlet line forming an inlet conduit for introducing seawater into an onshore tank farm and an exhaust line forming an outlet conduit for discharging discharged water from the aquaculture plant; An inlet pump installed upstream from the inlet line and an outlet pump installed upstream from the outlet line; Along the lengthwise direction of the installation section on at least one or more installation sections selected from the first section between the inlet pump and the farm in the inlet line and the second section between the outlet pump and the distal end of the outlet pipe in the outlet line Power generation devices 5 installed at intervals and configured to produce electric power using hydraulic power in the installation section; A small hydro power generation system may be provided, including an energy storage system (ESS) that stores electric power (electrical energy) produced by the power generation devices 5.

Each of the power generation devices 5 includes a water pipe (10) in which both ends of the longitudinal direction of the piping of the installation section are connected in series so as to be rotatable relative to a center line (A1); Arranged in the inner flow path 13 of the water pipe 10, and composed of a central axis 21 on the center line A1 and blades 22 around the central axis 21 and the blade 22 ) Are coupled to the inner wall of the internal flow path 13, and an impeller 20 rotated with the water pipe 10 by hydraulic force; A rotor provided around the water pipe 10; And a stator disposed around the rotor.

The water pipe 10 includes a water inlet 11 at one end in the longitudinal direction, a water outlet 12 at the other end in the longitudinal direction, and the inside connecting the water inlet 11 and the water outlet 12 It may have a flow path (13).

The blades 22 are disposed along the periphery of the central axis 21, and respectively, from the front region 221 and the front region 221, where water from the inlet 11 of the water pipe 10 collides. It may be composed of a rear region 222 formed to form a vortex that moves toward the water outlet (12) of the water pipe 10 by rotating the water.

Each of the power generation devices 5 is provided to rotate with the water pipe 10 on the outer circumference of the water pipe 10, and is formed in the longitudinal direction of the water pipe 10, and of the water pipe 10. Auxiliary wings 30 spaced from each other along the outer circumferential direction; It may further include a rotational force providing means for providing rotational force to the auxiliary blades (30) using pneumatics.

Means for solving the problems will be more specific and clear through examples, drawings, and the like described below. In addition, in the following, various solutions other than the solutions mentioned can be further suggested.

1 is a block diagram showing a small hydro power generation system according to an embodiment of the present invention.
FIG. 2 is a perspective view showing the tubular power generation device shown in FIG. 1.
3 is a cross-sectional view taken along line AA in FIG. 2.
4 is a cross-sectional view taken along line BB in FIG. 3.
5 is a perspective view showing the impeller shown in FIGS. 3 and 4.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. For reference, in the drawings referenced to describe an embodiment of the present invention, the size of a component, the thickness of a line, and the like may be exaggerated for convenience of understanding. In addition, the terms used to describe the embodiments of the present invention are mainly defined in consideration of the functions in the present invention, and thus may vary according to a user's, operator's intention, and customs. Therefore, the terms should be interpreted based on the contents throughout the present specification.

A configuration of a small hydro power generation system according to an embodiment of the present invention is illustrated in FIGS. 1 to 5.

As shown in Figure 1, the hydroelectric power generation system according to an embodiment of the present invention, the inlet line forming an inlet pipe for introducing seawater in the sea adjacent to the shore tank farm adjacent to the coast, and discharged water from the farm It includes a discharge line forming a discharge pipe discharged to the adjacent ocean.

Both the inlet and outlet lines are pipes made up of pipes. According to the inlet line and the discharge line, seawater can be provided to the aquaculture plant through the inlet line, and the seawater used in the aquaculture plant can be discharged to the ocean by the discharge line.

The small-scale power generation system according to an embodiment of the present invention includes a plurality of pipe type generation apparatus installed in an inlet line, an inlet pump installed upstream from an inlet line, an outlet pump installed in an outlet line, and an inlet line and / or an outlet line 5), and further includes an energy storage system (ESS) for storing electric power (electrical energy) produced by the tubular power generation devices 5.

At least one of the inlet pump and the discharge pump may be a double volute pump.

The tubular power generation devices 5 installed in the inlet line may be installed in the first section upstream of the inlet line based on the inlet pump. That is, in the section between the inlet pump and the fish farm in the inlet line, the tubular power generation devices 5 may be arranged at intervals along the longitudinal direction to be spaced apart from each other.

The tubular power generation devices 5 installed in the discharge line may be installed in the second section downstream of the discharge pump in the discharge line. That is, in the section between the discharge pump and the distal end of the discharge pipe in the discharge line, the tubular power generation devices 5 may be arranged at intervals along the longitudinal direction to be spaced apart from each other.

The tubular power generators 5 are configured to produce electric power using the energy of seawater moving along the installation section in the installation section in which the tubular power generators 5 are arranged.

2 to 5, each of the tubular power generation devices 5 of the small hydro power generation system according to an embodiment of the present invention includes an aberration, a rotor, and a stator. The aberration includes a water pipe 10 and an impeller 20.

The water pipe 10 is connected to the pipe of the installation section so that both ends in the longitudinal direction are rotatable relative to the center line A1. The water pipe 10 has an inlet 11 at one end in the longitudinal direction, an outlet 12 at the other end in the longitudinal direction, and an internal passage 13 connecting the inlet 11 and the outlet 12. Of course, the inner flow path 13 is formed between the inlet 11 and the outlet 12.

The impeller 20 is disposed in the internal flow path 13. The impeller 20 consists of a central axis 21 on the center line A1 and blades 22 around the central axis 21. The blades 22 are coupled to the inner wall of the inner passage 13. When seawater (hereinafter referred to as water) moving along the pipe of the installation section is introduced into the internal flow path 13 through the inlet 11, the impeller 20 moves the inflowing water toward the outlet 12 In the rotation by the energy acting on the blades 22 in the same direction with the water pipe (10).

The blades 22 are arranged around the central axis 21. Each of the blades 22 has a front region 221 where water from the inlet 11 collides and a rear region 222 formed to rotate the water from the front region 221 to form a vortex that is moved toward the outlet 12. It consists of. That is, when the impeller 20 is rotated by hydraulic power, the rear region 222 of the blades 22 forms a vortex by its shape. Vortices have a relatively fast flow rate, unlike water flows flowing in parallel.

According to this, in the tubular hydrophobic power generator according to the embodiment of the present invention, it is possible to reduce the width at which the flow rate of water (potential energy of water) is reduced by the impeller 20. In other words, it is possible to provide water with a reduced flow rate reduction width to aberration arranged downstream of the pipe, thereby preventing the power generation efficiency due to the downstream aberration from rapidly decreasing.

Reference numeral 30 is an auxiliary wing, and reference numeral 40 is a magnet. In addition, 50 is a casing, and 60 is a coil.

Each aberration includes auxiliary wings 30. The auxiliary wings 30 are provided to rotate in the same direction with the water pipe 10 on the outer circumference of the water pipe 10. The auxiliary wings 30 are formed in the longitudinal direction of the water pipe 10 and are arranged at regular intervals so as to be spaced apart from each other along the outer circumferential direction of the water pipe 10.

The magnet 40 is provided at regular intervals so as to be spaced apart from each other along the outer circumferential direction of the water pipe 10 at a central portion of each outer circumference of the water pipe 10, and may be a permanent magnet. The magnets 40 constitute a rotor.

The casing 50 is configured to have a shape surrounding each of the water pipes 10.

The coil 60 constitutes a stator. The coil 60 is provided to correspond to the magnets 40 on the inner circumference of each casing 50.

Electric power is produced in each generator including a rotor with magnets 40 and a stator with coil 60 due to the phenomenon of electromagnetic induction.

Each aberration further includes a rotation force providing unit. The rotational force providing unit serves to provide rotational force to the auxiliary wings 30 using pneumatic pressure. The rotation force providing unit, the air passage formed in the inner circumferential direction on the inner circumference of the portion surrounding the auxiliary blades 30 in the casing 50 (including a space formed between the outer circumference of the water pipe and the inner circumference of the casing), and the inlet of the air passage And a blower and an ejector respectively connected to the outlet. The rotation force providing unit may include only one of a blower and an ejector.

According to the blower, it is possible to provide rotational force to the auxiliary wings 30 by forcibly injecting air into the air passage. According to the ejector, it is possible to provide rotational force to the auxiliary wings 30 by forcibly evacuating the air in the air passage to lower the pressure in the air passage.

The blower and / or the ejector may operate by the electric power produced by the generator when the flow rate of water moving along the pipe is equal to or less than a predetermined set flow rate.

The power stored in the energy storage device can be used to operate a small-scale power generation system according to an embodiment of the present invention, such as an inlet pump, an exhaust pump, a blower, an ejector, and the like.

Although the present invention has been described above, the present invention is not limited by the disclosed embodiments and the accompanying drawings, and can be variously modified by those skilled in the art without departing from the spirit of the present invention.

In addition, the technical idea described in the embodiments of the present invention may be implemented independently of each other, or two or more may be performed in combination with each other.

5: tubular power generation device
10: water pipe
11: Inlet
12: Exit
13: internal flow
20: impeller
21: central axis
22: blade
221: front area of the blade
222: rear area of the blade
30: auxiliary wing
40: magnet
50: casing
60: coil

Claims (4)

An inlet line forming an inlet conduit for introducing water from the ocean into the onshore tank farm and an outlet line forming an outlet conduit for discharging discharged water from the aquaculture plant;
An inlet pump installed upstream from the inlet line and an outlet pump installed upstream from the outlet line;
Along the lengthwise direction of the installation section on at least one or more installation sections selected from the first section between the inlet pump and the farm in the inlet line and the second section between the outlet pump and the distal end of the outlet pipe in the outlet line Power generation devices 5 installed at intervals and configured to produce electric power using hydraulic power in the installation section;
Including the energy storage device for storing the power produced by the power generation device (5),
Small Hydro Power System. The method according to claim 1,
Each of the power generation device 5,
A water pipe 10 in which both ends of the longitudinal direction are connected to the pipe of the installation section in a line to enable rotational movement based on the center line A1;
Arranged in the inner flow path 13 of the water pipe 10, the central axis 21 on the center line A1 and the blades 22 around the central axis 21, and the blades 22 An impeller (20) rotated together with the water pipe (10) by hydraulic power by being coupled to the inner wall of the inner flow passage (13);
A rotor provided around the water pipe 10 to rotate together with the water pipe 10;
Comprising a stator disposed around the rotor,
Small Hydro Power System. The method according to claim 2,
The blades 22 are disposed along the periphery of the central axis 21, respectively, from the front region 221 and the front region 221 where water from the inlet 11 of the water pipe 10 collides. Consisting of a rear region 222 formed to form a vortex that moves toward the water outlet 12 of the water pipe 10 by rotating the water of the
Small Hydro Power System. The method according to claim 2 or claim 3,
Each of the power generation device 5,
It is provided to rotate with the water pipe 10 on the outer circumference of the water pipe 10, and is formed in the longitudinal direction of the water pipe 10, and the auxiliary wings spaced from each other along the outer circumferential direction of the water pipe 10 30 and;
Further comprising a rotational force providing means for providing rotational force to the auxiliary blades 30 using pneumatic,
Small Hydro Power System.

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