JPS5917942Y2 - surface water intake device - Google Patents

Description

[Detailed explanation of the idea] This proposal relates to a surface water intake device that can reduce the weight of the entire structure.

A conventional water intake device has a structure in which a water intake pipe and a water intake plate fixed to the pipe are guided and supported so as to be movable up and down inside a water intake tower having vertical columns arranged in a polygonal shape.

In this case, if the diameter of the water intake plate is increased in order to limit the approaching flow velocity so as not to entrain the cold water below the water intake plate, the water intake tower will also become larger and construction costs will increase.

The purpose of the present invention is to provide a surface water intake device that can extend the intake plate to the outside of the water tower and limit the approaching flow rate without enlarging the water intake tower.

The illustrated embodiment will be described below. A telescopic water intake pipe 1 of a well-known structure is provided at the center of a support column 2 arranged in a triangular shape, and a lowermost water intake pipe 1b is fixed to the bottom of the water and communicates with a water conveyance pipe 3. The outwardly curved periphery of the upper end of the uppermost water intake pipe 1a and the periphery of the center hole of the horizontal water intake plate 4 are connected.

A boat-shaped rectifier plate 5 is fixed to a portion of the water intake plate 4 that passes through the support column toward the center of the water intake pipe to surround the support column 2.
Float 6 is fixed on the top of.

The float 6 has a smaller diameter than the water intake plate 4, and is guided and supported by a guide roller 8 mounted facing the support through hole 7 in contact with the support 2 so as to be able to move horizontally up and down.

The lower surface of the float 6 hangs down toward the center of the water intake pipe, and forms a spout 9 between it and the water intake plate 4.

The float 6 has a buoyancy that supports the weight of movable parts such as the telescopic intake pipe 1 and the intake plate 4, and holds the intake plate 4 at the depth of the surface warm water layer from which water is to be taken. Constructed to rise above.

10 is a screen erected around the outer periphery of the water intake plate 4.

Surface water above the water intake plate 4 flows into the water intake pipe 1 through the spout 9 and is taken in.

In this case, since the water intake plate 4 can extend outward regardless of the arrangement of the support columns 2, the flow velocity passing through the screen 10, that is, the approaching flow velocity is selected so as not to involve the cold water below the water intake plate 4. It is easy to do.

The present invention has the above configuration, and has the effect that the water intake tower can be made smaller compared to the required outer diameter of the water intake plate.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an elevational view partially shown in cross section, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1.

Claims (1)

[Scope of utility model registration request] A plurality of vertical columns are erected in a polygonal shape, and a water intake plate extending outward from the columns and a float above the vertical columns are fixed to the top of a telescopic intake pipe installed at the center of the vertical columns, and the intake plate and frome are fixed to the top of the expandable intake pipe. A rectifying plate surrounding the support is provided between the float and the water intake plate, and a spout whose center faces the upper end opening of the telescopic intake pipe is formed between the float and the water intake plate, and the float is guided and supported by the support so that it can move up and down, and the buoyancy of the float is used to guide and support the float. A surface water intake device characterized by holding a water intake plate at a predetermined water depth.