JPS61158509A - Lake water effluent power generater - Google Patents

Abstract

PURPOSE:To simplify structure, by a method where the lower part of an expand able effluent cylinder body is connected to a main effluent pipe, the upper most part thereof is suspended by means of floats to locate the body in water, and a water turbine generator is installed within the main pipe. CONSTITUTION:Lake water in a surface part is fed in an effluent cylinder body through the upper end of an expandable effluent cylinder body 1 suspended in water at a specified distance from a float 2, and is discharged in a water passage for irrigation flowing through a main effluent pipe 7. As a water level in a lake is lowered, the effluent cylinder body 1 is decreased in size, an effluent pipe 4 is brought into contact with a stopper 6 attached to the lower end of an effluent cylinder 3 on the stationary side, and the uppermost effluent cylinder 5 is forced into contact with the stopper 6 to stop discharge. This enables the water turbine of a water turbine generator 10 to be always rotated by means of a head H extending from a water surface to the main effluent pipe 7, resulting in stable generation of an electric power.

Description

[Detailed Description of the Invention] Industrial field This invention relates to a device for discharging water from a lake or reservoir, and uses a lake water discharging device that can discharge only surface water and has a simple structure and is inexpensive. Regarding discharge power generation equipment.

BACKGROUND TECHNOLOGY In general, when snowmelt water is used as irrigation water, unlike underground water, the water temperature is low and may have an adverse effect on crops. The method used was to use only the

As shown in Figure 2, as a device for discharging only the surface water of a lake, several discharge branch pipes (8) and gates (9) are provided on the embankment of a lake, etc. in the direction of the depth of the lake water, and these are discharged. Equipment was often used that connected to the main pipe (n) and opened the gate at the top where water could be taken in to release surface water.

In addition, in this discharge facility, there is a water turbine power generation unit 1110, which is an underwater installation type that combines a water turbine and a generator, in the discharge main (inside the main pipe).
0 was inserted, and a power generation device was used that utilized the head difference of the discharged lake water.

However, with the above-mentioned conventional equipment, it is necessary to install a plurality of discharge branch pipes as a discharge device, and also to provide a vertical hole in the embankment and install a gate in the branch pipe to open and close it, which requires a large amount of cost to install the equipment. In addition, since the water intake of the outlet branch pipe is fixed, it is not necessarily possible to take in only surface water due to the relationship between the lake water level and the water intake, and the gate must be opened and closed sequentially according to changes in water level. In addition, it is not easy to inspect and manage gates and discharge branch pipes, and opening the lowest gate may result in the release of fish and shellfish living in lakes, etc. There was a problem.

In addition, as shown in the drawing, the discharge power generation device has a head difference of H from the water surface to the turbine, but there are multiple discharge branch pipes (
8) In the vertical hole that connects the water column, it is practically impossible to prevent the water column in the vertical hole from discontinuing with the lake water, so the head applied to the water turbine generator is reduced to h. However, there were problems with reduced power generation capacity and lack of stability.Furthermore, because the water turbine generator was installed inside the waterway, various problems were caused in equipment costs and maintenance management.

Purpose of the Invention The object of the present invention is to provide a lake water discharge device that can discharge only surface water from a lake or reservoir regardless of changes in the water level, has a simple structure, is easy to install and handle, and is safe. By utilizing this lake water discharge device, the aim is to create a lake water discharge power generation device that has stable and high power generation capacity and is easy to install and maintain.

Structure of the Invention This invention incorporates a plurality of tubes into a telescope type so that they can expand and contract in the axial direction, and the tube with the smallest diameter of the main body of the discharge tube is connected to a lake,
Connects to the main discharge pipe installed at the bottom of a reservoir, etc., and suspends the largest diameter tube with a float and places the discharge tube body vertically in the water, or incorporates multiple or single tubes into a bellows type. It is expandable and retractable in the axial direction, and the lower part of the discharge tube body is connected to the lake.

Connected to the main discharge pipe installed at the bottom of a reservoir, etc., with the top part suspended by a float and the discharge tube body placed vertically in the water, connected to the lower part of the discharge tube body and/or the discharge tube. This is a lake water discharge power generation device characterized by comprising a water turbine generator placed in a discharge main pipe portion or a water turbine connected to a generator, and generating power by taking lake water etc. from the top of the discharge tube main body.

The main body of the discharge tube is constructed by incorporating multiple tubes in a telescope shape or in a bellows shape, with each tube length set in consideration of water depth, water pressure, amount of overlap during contraction, tube material and strength, etc. If it is configured to be expandable in the axial direction, it can be made of steel pipes, FRP, or PVC.

It may be a tube made of any material such as synthetic rubber or plastic, or any telescope or bellows assembly structure.

Further, in the case of a telescope type, a water-sealing structure is preferable to prevent lake water etc. from entering through the connection and assembly portion of the plurality of tubes, and to a degree that does not impede smooth expansion and contraction of the telescope shape. In addition, in the case of a bellows type, a water-sealing structure can be easily achieved, but it is necessary to consider the strength to withstand the required water pressure, since it is necessary to assemble the rubber cylinder through a large number of ring reinforcing members. By using, for example, metal connecting tubes at the upper and lower ends of the tube, connection to the float or the discharge main pipe becomes easy.

In addition, in this invention, 8 of the telescope type discharge tube main body is
Connect the tube with the smallest diameter of the simple tube vertically to a discharge main installed horizontally at the bottom of a lake, reservoir, etc., and suspend the tube with the largest diameter at the top with a float to create a discharge tube. Since the main body is placed vertically in the water and water can be taken in between the float and the upper end of the uppermost position, the amount of discharged water can be adjusted as appropriate by adjusting the distance between the float and the upper end of the discharge pipe.

As long as the distance between the float and the upper end of the discharge tube can be adjusted, any method other than suspension using a chain or rod may be used to suspend the discharge tube body using a float.

In addition, the float must have enough buoyancy to suspend the main body of the discharge tube underwater, allow each part to float, and allow the length of the body of the discharge tube to expand and contract in response to changes in the water level. The float may be made of any material or structure as long as it can be held. In addition to the main float that obtains buoyancy on the water surface, there are also 8 floating floats.
It is also a good idea to simply provide an auxiliary float to reduce the load on the main float and reduce the size of the main float.

The water turbine generator according to the present invention needs to be disposed at the lower part of the main body of the discharge pipe, in the main part of the discharge pipe connected perpendicularly to the discharge pipe, or across both of the above, so it is possible to use a variable pitch or fixed pitch prover type turbine. An underwater installation type in which a generator and a generator are integrated is preferable, and the generator is preferably suspended and disposed within a pipe. Alternatively, it is also possible to apply a configuration in which only the water turbine is placed in the discharge tube and the rotational force is transmitted to a generator installed on the water surface. Furthermore, the shape of the passage inside the discharge pipe or the corresponding part of the discharge pipe where the turbine etc. are arranged is made into an appropriate shape as a turbine rotation chamber, and the water turbine generator is installed via a sheet module that forms the turbine rotation chamber. It's also good.

Effects of the Invention The water discharge device according to the present invention uses a float that obtains buoyancy at least on the water surface, so that, for example, a telescope-like extensible water pipe is arranged such that the upper end of the water pipe and the float are separated by a predetermined distance depending on the water level of lake water or the like. Because it holds and expands and contracts, the amount of water intake can be set freely, and only surface water from lakes etc. can be taken in and released at all times. Furthermore, since it is only composed of a float and a telescope-like or bellows-like tube, it has the advantage of being simple in structure, easy to manufacture and install at low cost, and easy to handle and maintain.

The discharge power generation device according to the present invention is capable of constantly applying discharge water with a drop from the water surface to near the lake bottom to the water wheel of the water turbine generator placed at the bottom of the discharge tube installed vertically toward the lake bottom underwater. Therefore, compared to conventional power generation equipment, water turbine generators have the advantage of higher and more stable power generation capacity.
Since the discharge tube is installed by its own weight on a suspension support or a pre-formed seat within the main body of the discharge tube, it is extremely easy to maintain and manage, and can be installed extremely easily and at low cost.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a longitudinal sectional view showing the structure of an embodiment of a discharge power generator according to the present invention. Here, an example using a telescope type discharge tube will be explained.

The lake water discharge power generation device according to the present invention includes a discharge tube main body (1)
It consists of a float (2) and a water turbine power generation IN (10).

The discharge tube main body (1) consists of three discharge tubes (3), (4), and (51) made of steel pipes whose inner diameters gradually increase.Through water-stop gaskets on the inner periphery of each tube end, the inner diameters are telescoped. It connects to a large tube one after another and can be assembled in a telescopic manner.

On the other hand, there is a discharge main (
'7) is buried, and the lower end of the minimum diameter discharge tube (3) of the discharge tube body (1) is connected and fixed perpendicularly to the horizontally arranged discharge main pipe (the end of the sword pipe, that is, in the vertical direction The connection is fixed.

In addition, a float (2) having a rubber air bag configuration is connected to the upper end of the discharge tube (5), which has the largest diameter of the discharge tube body (1), with a chain. It is suspended by the buoyancy of (2) and can float in the water, and the distance from the upper end of the underwater discharge tube (5) to the water surface is always constant for the length of the chain, and can be set arbitrarily. . Furthermore, a mechanical mechanism that moves up and down in accordance with the water surface position may be used, such as a screw mechanism or a pulley mechanism, as long as the same purpose is achieved.

The water turbine generator IN (10) is an underwater installation type in which the turbine and generator are integrated, and the water turbine part is stabilized by its own weight on the 7 flange part in the cylinder at the position where it enters the discharge main pipe (7). The discharge main pipe connected to the discharge pipe (3) is formed into a passage through which all discharged water passes through the blades of the water turbine. It can be lifted from above with a chain block (11) and taken out for inspection.

Various methods can be used to suspend the water turbine generator (10), such as suspending it with an arm that overhangs the embankment, or suspending it with a boat or a float.

In the above configuration, surface lake water is taken into the cylinder from the upper end of the discharge cylinder main body (1) suspended in the water at a constant interval from the float [21], and is passed through the discharge main pipe (7). Discharged into irrigation canals. The water level of the lake water decreases as water is discharged, but since the discharge pipe (4H5) is suspended by a float and the lowest position of the discharge pipe (3) is fixed, as the water level decreases, First, the amount of overlap between the discharge tube (3) and the discharge tube (4) changes. When the water level further decreases, the floating discharge tube (4) comes into contact with a stopper (6) provided around the lower end of the fixed side discharge tube (3), and this discharge tube (
4) and the uppermost discharge tube (5) changes, and after the uppermost discharge tube (5) comes into contact with the stop spit (6), the water level does not drop any further and the water inhabits the lake. This prevents fish and shellfish from being released into the lake along with the lake water.

In this way, the lake water taken in and discharged from the upper end of the discharge pipe main body (1) always has a head difference H from the water surface to the discharge main pipe (7), which allows the water wheel to rotate and stable power generation. becomes.

During power generation, the amount of water that passes through the turbine is determined by the depth of the water, so there may be cases where there is more water than necessary for irrigation, or there is insufficient water.
2) or by installing a bypass pipe (13) for water intake? l
It is also good to have a configuration that allows the general amount of water to be adjusted as appropriate.
.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of a lake water discharge device according to the present invention. FIG. 2 is an explanatory diagram showing a conventional lake water discharge facility. 1... Discharge pipe body, 2... Float, 3, 4.5...
Outlet tube, 6... Stopper, 1... Outlet main pipe, 10.
...Water wheel starting machine, 11...Chain block. Figure 1 Figure 2

Claims (1)

[Claims] 1 A plurality of tubes or a single tube are assembled into a telescope type or bellows type so that they can be expanded and contracted in the axial direction, and the lower part of the discharge tube body is connected to a discharge main installed at the bottom of a lake, reservoir, etc., and the top The discharge tube body is suspended by a float and the discharge tube body is placed vertically in the water, and the discharge tube body is connected to a water turbine generator or generator placed in the lower part of the discharge tube body and/or the inner part of the discharge main connected to the discharge tube. 1. A lake water discharge power generation device comprising a water wheel and generating power by taking lake water, etc. from the top of the discharge tube main body.