JP2021195947A - Power generation device by conveyer water turbine using low head water channel - Google Patents

Abstract

To provide a small hydraulic power generation device that is hard to be influenced by the width of a water channel, does not require river construction, has large rotation torque, can efficiently convert low head flowing water energy into mechanical energy, is hard to be influenced by impurities, can always receive stable rotations regardless of time zones, and can also supply business electric power.SOLUTION: A small hydraulic power generation device has a fixing platform 1 that fixes a conveyer water turbine in an irrigation channel or a river, rotation rollers 2, 3, and 4 installed at both ends of a lower part and an upper end portion of a center like as an isosceles triangle, a belt conveyer 5 that rotates while surrounding the three rotation rollers, and a plurality of water receiving plates 6 attached to a surface of the belt conveyer 5. The water receiving plate 6 can open/close to one side of the surface of the belt conveyer 5, is fixed so as not to open beyond a right angle, is installed so as to receive force toward a water flow, and rotates the conveyer 5 with force received by the water receiving plate 6 to generate power.SELECTED DRAWING: Figure 1

Description

In the present invention, the energy of flowing water in a water channel or a river is converted into rotational energy by a conveyor turbine, which leads to power generation.

Speaking of hydropower, the first thing that comes to mind is a large dam and a power plant that uses the potential energy of the water generated by that dam.
Hydroelectric power generation, which does not emit carbon dioxide, is popular all over the world as clean energy, but when a dam is used, it requires a certain geographical location environment, a sufficient amount of water, and large-scale civil engineering work.
Therefore, a power generation system using a low head canal has recently attracted attention.
It is said that running water nurtures a large amount of energy and the capacity factor is considerably higher than that of solar and wind power.
The present invention aims to lead to small hydroelectric power generation by fully utilizing the energy of flowing water such as irrigation canals and rivers.

JP-A-2019-173597 JP-A-2010-096043

Power generation using irrigation canals or rivers has been around for a long time, but its scale is small, profitability is severe, and maintenance is troublesome, so its spread as a business is not good enough.
Most of the low-head power generation so far is like a conventional water turbine, and it is fixed across the irrigation canal to install it, or it is fixed with a certain slope (spiral type) by river construction. Is common. Therefore, it is difficult to install in wide rivers and the utilization rate is low.

In the present invention, since the fixed pedestal is installed directly in the water stream, it is not easily affected by the width of the waterway and does not require river construction. By receiving the force of the water flow as it is with multiple receiving plates, the conveyor is moved by a linear motion longer than that of a normal water turbine, so that the rotational torque is large and the low head water energy can be efficiently converted into mechanical energy.
In addition, since the rotation torque is large, it is not easily affected by impurities, and stable rotation can always be obtained regardless of the time of day, which can be connected to business power supply.

It is a device that can be installed anywhere where water flows at low heads such as irrigation canals and rivers, and it is less affected by the seasons, day and night, wind, etc., and can always supply power efficiently at low cost.

It is a front view of the power generation device of the conveyor water turbine of this invention. It is a perspective view of a conveyor water turbine. It is an image diagram of the state where a plurality of conveyor water turbines are connected.

Hereinafter, the power generation system of the present invention will be described based on the embodiment shown in the figure.

FIG. 1 is an image diagram of a single power unit for power generation of the present invention.
First, a fixed pedestal (1) is installed in a river or irrigation canal. Rotating rollers (2) and (3) are attached to both ends of the lower part of the fixed frame. The rotating roller (4) is fixed to the upper end of the vertical fixing support in the middle, and the roller (4) is always at a height above the water surface.

A plurality of receiving plates (6) are fixed to the surface of the belt conveyor (5), and the rotating rollers (2), (3), and (4) are surrounded and installed so as to be rotatable. When the conveyor rotates, the backing plate (6) attached to the surface is sequentially expanded by the water flow as it passes through the roller (2) (so that the opening angle does not exceed 90 degrees with respect to the conveyor).

The force of the water receiving plate rotates the entire conveyor, and the three rollers also rotate at the same time.
A coaxial gear (7) is installed on the upper rotary roller (4) and connected to a generator to generate electricity.

When the water flow flows from the rotating rollers (2) to (3) as shown in FIG. 1, the receiving plates attached to the conveyors are in the expanded state, and the mechanical force that propels the water flowing force in the same direction. And move the conveyor from (2) to (3). At that time, the rotational force at which the conveyor rotates the rollers is close to the total propulsive force of the receiving plates developed between (2) and (3), respectively.

If the rotational energy obtained above is connected to a power generation turbine to generate power, the power generation efficiency will be considerably higher than that of a conventional water turbine.

The size and scale of the equipment of the present invention can be changed depending on the situation, and the size can be changed flexibly depending on the depth of the water flow and the width of the river. In some cases, it is possible to generate electricity with a larger force in a state where a plurality of units are connected by a roller chain or the like (see FIG. 3).

The equipment of the present invention is simple and easy to install, and because of its large rotational force, it is not easily affected by the season, day and night, and head, and enables stable energy supply at all times.

(1) Fixed stand (2) Rotating roller (3) Rotating roller (4) Upper rotating roller (5) Belt conveyor (6) Receiving plate (7) Gear

Claims (1)

A fixed stand for fixing the conveyor turbine to the irrigation canal or river is provided, and rotating rollers are provided at both ends of the lower part and at the upper end of the center like an isosceles triangle, and a belt conveyor surrounds the three rollers and can rotate. Install multiple water receiving plates that can be opened and closed on only one side on the surface of the belt conveyor, fix the water receiving plates so that they do not open more than a right angle, and receive force toward the flow of water. A hydraulic power generation device that is installed in the area and uses the received force to convert the flowing energy of water into mechanical energy, which rotates a conveyor and connects it to power generation.

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