JPS5945044B2 - A device that automatically maintains the upstream water level at a constant level using a water-type rubber dam. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rubber dam (also called Fabry dam Gomzeki) made for the purpose of water intake from a river, and a device that automatically maintains the upstream water level at a constant level. be.

The gist of the present invention is that when opening and closing the valve 7 of the water supply pipe 8 into the rubber dam 15 in conjunction with the upstream water level and opening and closing the valve 10 of the drain pipe 9 from within the rubber dam 15, The interlocking method is a rubber dam device that uses a float 3 installed in a water tank 2 connected to the upstream river, and the water level of the upstream river is adjusted via the water tank 2 connected to the upstream river. The tank is connected to the inside of the rubber dam 15 so that water at a water pressure corresponding to the water pressure is supplied into the rubber dam 15.

According to the device of the present invention, as the river water level rises, water in the rubber dam 15 is drained to lower the height of the dam and keep the upstream water level constant, and conversely, when the river water level starts to fall, the rubber dam 15 By replenishing water inside the dam and raising the height of the dam, the upstream water level can be maintained constant.

Therefore, the device of the present invention eliminates the need for a power device such as a pump, and therefore does not require any human labor for management or maintenance of the pump or the like.

(The only manual work required is initial adjustment and maintenance.

) The possibility of disasters occurring due to operational errors, especially during floods, can be completely prevented.

As shown in FIG. 3, the river upstream of the rubber dam 15 and the water tank 2 in which the floats 3, 3 are floated are connected by a connecting pipe 1,
As the river water level changes, the water level of the water tank 2 is made to change accordingly.

Floats 3, 3 are floated in this water tank 2, and floats 3.
3 moves to follow changes in the water level in the water tank 2, the wire ropes 5, 5 or lever bars 6, 6 connected to the floats 3, 3 open and close valves 7, 10 of the water supply pipe 8 and drain pipe 9 (
or gate) operated by its opening and closing device.

In this case, the valve 7 of the water supply pipe 8 moves in the direction of closing as the upstream water level rises, and the valve 10 of the drain pipe 9 moves in the direction of opening as the upstream water level rises.

Further, the valves 7 and 10 are set so that they open and close at different water levels, that is, the valve on the water supply pipe 8 side operates when the water level is low, and the valve on the drain pipe 9 side operates when the water level is high.
, 5, the length of the lever bars 6, 6, and the length and shape of the opening/closing handle of the valve or gate.

If the opening and closing water levels of the water supply pipe and drainage pipe valves are significantly different due to reasons such as the water level rising quickly during floods in some rivers, it is better to have separate float tanks for water supply and drainage.

Furthermore, even if the set upstream water level is considerably higher than the height of the dam, a separate water tank may be used for reasons such as the need to shift the point where the upstream water level is sensed a considerable distance upstream from the dam point.

FIG. 4 shows a second embodiment of the present invention, in which the water level in the water tank 2 tends to fluctuate due to water supply to the rubber dam 15.
Alternatively, this is for cases where it is better to create a separate water supply tank 13 that also serves as a sand settling area because there is a lot of sand mixed into the water from the river.

Another water tank 13 is interposed between the water tank 2 and the water supply valve 7.

Water may be supplied into the water supply tank 13 through the cock 12 from another water source, for example, water from a mountain spring.

As described above, the present invention is designed to supply water at a pressure corresponding to the water level of the upstream river to the rubber dam 15 through the water tank 2 connected to the upstream river. Due to the structure in which the rubber dam is connected, the water level upstream of the rubber dam is always maintained at the set water level.
Since it does not require a drive device such as a pump, it is a fully automatic system that does not require human labor for pump maintenance, etc. Moreover, because the configuration is simple, there is no risk of failure and it is highly reliable. has.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; Fig. 1 is a configuration diagram of a system using a wire rope, Fig. 2 is a configuration diagram of a system using a rod, and Fig. 3 is a configuration diagram of a system using a rubber dam. FIG. 4 is an overall configuration diagram showing the second embodiment. 1 is a connecting pipe with the river, 2 is a water tank for floats, 3 is a float, 4 is a float stopper, 5 is a wire rope,
6 is a lever rod, 7 is a water supply pipe valve, 8 is a water supply pipe into the rubber dam, 9 is a drainage pipe from the rubber dam, 10 is a drainage pipe valve, 11 is a water discharge pipe to the downstream river, 12 is a cock, 13
is a water tank, 14 is an on-off valve, 15 is a rubber dam, 16
is the upstream water level detection port.

Claims (1)

[Claims] 1. In opening and closing the valves of the water supply pipe into the rubber dam and opening and closing the valves of the drainage pipe from inside the rubber dam in conjunction with the upstream water level, the method of interlocking with the upstream water level is the same as that of the upstream river. In a rubber dam device that utilizes floats installed in connected water tanks, water at a pressure equivalent to the water level of the upstream river is introduced into the rubber dam through the water tank connected to the upstream river. A device for automatically maintaining a constant upstream water level using a water-type rubber dam, characterized in that the water tank and the inside of the rubber dam are communicated so as to supply water.