JPS6124713A - Water-intake and drainage device - Google Patents

Abstract

PURPOSE:To prevent the occurrence of turbidity even at the time of small amount of water, by a method wherein surrounding is enclosed by means of an underwater fence which is water permeable but prevents the flow of turbidity particle, a floating water-conveyance conduit having an intake and drainage port is installed, and water is collected and drained in the position of a surface part. CONSTITUTION:An intake drainage device B is adapted to suck water from the outside into a fence surrounding area 2', prevent enterance of turbidity particle with the aid of an underwater fence 1', and suck only clean water through an intake drainage port 3'a into a flexible water-conveyance duct 3'. The water is drained through an intake drainage port 3a by means of a water-conveyance duct 3 of an intake drainage device A, and even if turbid particle is contained in the water, the water is prevented from flowing out to the outside. When a water level is lowered, since the water-conveyance pipe 3' is flexible, the intake drainage port 3'a is moved alongwith lowering of a water level for intake. This, since the intake drainage port can always be positioned to the surface part of a water area, enables water to be always sucked and drained in a clean state.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water intake/drainage device, which prevents pollution from occurring when, for example, water is discharged from a dam or when water is taken in or discharged from a dam for pumping storage power generation. The present invention relates to a device that does this.

Conventional technology For example, a dam installed for pumped storage power generation is configured as a double dam, and for example, during the day, water from the upper dam is used for power generation, and the used water is stored in the lower dam. This water is pumped up to the upper dam at night, and this water is used again for power generation. In such a case, if the water pumped from the lower dam is polluted, the water from the upper dam will also become cloudy, which is undesirable.If the water volume of the lower dam decreases, the mud at the bottom will be pumped up with the water. This will make it even more likely.

Furthermore, when water from a dam is discharged, as described above, when the amount of water in the dam decreases, the mud at the bottom is discharged, which is undesirable because polluted water is discharged.

Problems to be Solved by the Invention As mentioned above, in the past, for example, when water is taken in or discharged from a dam, pollution may occur, especially when the amount of water is low, and appropriate measures have not been taken to deal with this problem. There wasn't.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a fenced area in a water body surrounded by an underwater fence that allows water to pass through and prevents the flow of pollutant particles, and also provides an intake and drainage outlet. A flexible water conduit pipe having at least a portion near the water intake/drainage port suspended by a floating body is provided in the water area, and the intake/drainage port is located in the surface area within the area surrounded by the fence. The system is characterized in that water is introduced into the water conduit pipe for intake, or water is introduced into the water conduit pipe from the outside and drained from the intake/drainage port.

A flexible pipe with a working intake/outlet suspended by a floating body is provided in a body of water, and this is surrounded by an underwater fence, so that the intake/outlet can always be located at the surface layer of the water. Therefore, it is possible to supply or discharge water from the surface layer of the water area.

Embodiment Next, an embodiment of the present invention will be explained based on FIGS. 1 and 2.

FIG. 1 is an explanatory diagram of a dam for pumped storage power generation equipped with the device of this embodiment. Devices A and B are provided, respectively.

The water intake and drainage device A is provided with a fence surrounding area 2 surrounded by underwater fences 1.1 in a water body.

That is, the underwater fence 1 is a water-permeable planar body 1b that blocks the flow of pollution particles to the floating body 1a, but allows water to freely circulate.
These underwater fences 1.1
... are connected in a ring as shown in Figure 2 to divide the water area, preventing the inflow of pollution particles into this surrounding area z, and preventing the pollution particles within this area from flowing out of the area. Only clean water can flow freely within and outside the area. Although details of the water-permeable planar body 1b are not shown in the drawings, for example, a net with hair-like fibers rolled up in a cutlet shape to allow water to pass through is attached here and there to the net.

Reference numeral 3 denotes a flexible water conduit made of rubber or the like; one end of this conduit 3 is provided with an intake/drainage port 3a, and the other end is connected to a pipe 4 penetrating through the wall of dam a. It is connected. And, on the tip side of this water pipe 3, there is a floating body 5.5.
- is installed, the intake and drainage ports 3a can be located on the surface layer of the water area, and the length of the water conduit 3 is sufficient so that when the water level of the water area falls, the intake and drainage ports 3a can move accordingly. is giving.

Similar to the above-mentioned intake and drainage equipment A, the intake and drainage equipment B also has underwater fences 1°, 1° . The tip on the intake/outlet side is suspended by floating bodies 5'', 5'', etc., and the other end is connected to the pipe 4.

Next, the operation of this embodiment will be explained.

When pumping water from the lower dam b, a pump (not shown) is operated to pump water from the water intake and drainage device B to the water intake and drainage device A. At this time, in the water intake and drainage device B, water is sucked into the fence surrounding area 2' from the outside, but even if this water is polluted, the polluted particles are blocked by the underwater fences 1', 1', etc. Only clean water is available at the intake and drain outlet 3'
water is drawn into the flexible water pipe 3' from the water intake/drainage device A, and is discharged from the water intake/drainage port 3a through the flexible water pipe 3 of the water intake/drainage device A. This discharged water is clean water, but even if it contains pollutant particles, these particles remain within the fenced area 2 and do not flow outside, so the water area outside is filled with cleaner water. be discharged.

In this way, the water is pumped up, and the amount of water in dam b decreases.
When the water level drops (then, since the water conduit 3' is flexible and has enough length, the intake/outlet port 31a moves to follow the drop in the water level, and the situation is the same as in the previous case. This water is discharged from the water intake and drainage system wA, but since the water pipe 3 is flexible and has enough length, the water intake and drainage port 3a also increases as the water level rises. It moves by following the flow of water and always discharges clean water.

The above water intake and drainage devices A and B are installed on both sides of the water intake and drainage sides.
However, even if the water intake and drainage device B is omitted and water is taken directly from the pipe 4, pollutant particles are removed by the water intake and drainage device A and only clean water is discharged to the outside of the fence surrounding area 2. Note that the pollutant particles settle and accumulate at the bottom.

Effects of the Invention According to the present invention, an area surrounded by an underwater fence is provided in a water area, and a flexible water conduit having an intake/outlet is provided in this area. Even if this happens, the flexible water conduit can follow this and the intake and drainage ports can always be located in the surface layer of the water body, so heavy water or drainage can always be carried out with clean water. Accordingly, the water intake diagram 2 is a plan view of the device.

In the figure, 1.1" is the underwater fence, 2.2" is the area surrounding the fence, 3.3" is the water pipe, 3a, 3'a are the intake and drainage ports, and 5.5" is the floating body.

ts2 diagram

Claims (1)

[Claims] (1) In addition to providing a fenced area in a water body surrounded by an underwater fence that allows water to pass through and prevents the flow of pollutant particles, a flexible structure that has an intake and drainage port and at least the portion near the intake and drainage port is suspended by a floating body. A water conduit pipe is installed in the water area, and the intake/drainage port is located in the surface area within the area surrounded by the fence, and water is introduced from the intake/drainage port to the water pipe to take in water, or water is introduced into the water pipe from the outside. A water intake/drainage device characterized in that the water is drained from the intake/drainage port.