JPS5941244Y2 - Surface water intake gate - Google Patents

Description

[Detailed description of the invention] This invention relates to a surface water intake gate in surface water intake or selective water intake equipment.

Generally, surface water intake equipment provided on a dam body etc. is mainly intended for intake of water for agricultural use, but may also serve as intake of water for power generation.

When a headrace is provided along the inclined wall on the side of the dam reservoir, a roller gate-type water intake gate that is raised and lowered along an inclined guide rail is provided in front of the headrace.

That is, in the conventional water intake equipment, as shown in Figs. 2 front wall 4
Intermediate door stop wall portions 6 are protruded from the lower half portion between both overhanging side walls 5 at predetermined intervals in the height direction, and the water level is controlled by a rope 8 using a groove T provided in both overhanging side walls 5 as a guide. A water intake gate 9 is provided which can be raised and lowered following the water intake gate 9, and a screen (not shown) is provided between both projecting side walls 5 at the front end to prevent floating matter from flowing in.

Further, in the front wall 4, a water intake 10 is provided in a predetermined height direction so as to penetrate the front wall 4 at a portion corresponding to the upper surface 6A of each of the intermediate wall portions 6 or in the vicinity thereof, and so that they do not overlap when viewed from above. Slide gates 11 are provided at intervals, and each gate 11 is connected to a spindle 14 operated by an opening/closing device 13 provided on the top end 12 of the dam body, and can be opened/closed individually. It is now possible to take in water.

Watertight rubber (not shown) is fixed to the front end of each intermediate door wall 6 and to both ends of the back of the water intake gate 9, and the lobe 8 is wound by a winding device 15 installed on the top end 12 of the dam body. It is wound up or rewound by the upper machine 15.

By the way, since the conventional water intake gate 9 is a roller gate type, when the upper end of the water intake gate 9 is located at the position shown by h in FIG. There are cases where this is not possible, and there is a drawback that water intake is intermittent.

This invention was made to solve the above-mentioned drawbacks, and examples will be described below with reference to FIGS. 3 and 4.

Components in FIGS. 3 and 4 that have the same configuration as those in FIGS. 1 and 2 are designated by the same reference numerals as those shown in FIGS. 1 and 2, and their explanation will be omitted.

In FIGS. 3 and 4, the water intake gate 9 has a gate main body 21.
and a semicircular shape (it may be square, trapezoidal, or semielliptical) that is attached vertically to its upper end and projects forward when viewed from above.

) water intake basin 22 and gate hanging parts 2 extended to the upper ends of both sides
3 and a roller 24.

The upper end of the water intake basin 22 is widened into a trumpet shape to form an overflow section 22A, and since the overall length of the overflow edge is long, the water intake effect can be increased.

25 is a side dust screen. According to the water intake gate according to this invention, as shown by the two-dot chain line in FIG.
When located above the upper surface 6A, the water intake 1 is located at a position below between the front end of the intermediate door stop wall 6 and the water intake tray 220.
Water can be taken from 0.

Therefore, by opening the lower slide gate 11, water is taken from the Kami-Senryo water intake 10, and the required amount of water can be continuously obtained.

In the water intake gate according to this invention, a water intake basin 22 having an arcuate rectangular or trapezoidal shape protruding forward when viewed from a plane is vertically attached to the upper end of a gate main body 21.
Since the overflow section 22A is expanded in a trumpet shape, the necessary water intake amount can be continuously obtained even when the water surface is near the top and bottom of the intermediate wall section 6, and the water intake effect can be increased. .

[Brief explanation of the drawing]

Figure 1 is a vertical side view showing the schematic configuration of conventional water intake equipment;
Figure 2 is an enlarged view of part ■ in Figure 1, Figure 3 is a sectional view corresponding to Figure 2 showing an embodiment of this invention, and Figure 4 is t in Figure 3.
It is an enlarged sectional view taken along the v-rv line. 1... Reservoir side slope, 2... Headrace, 4... Front wall, 6... Intermediate door stop wall, 8... Lifting rope, 9
... Water intake gate, 10 ... Water intake, 11 ... Slide gate, 21 ... Water intake gate body, 22 ... Water intake basin, 22A ... Overflow part.

Claims (1)

[Scope of utility model registration request] A headrace 2 is provided parallel to a reservoir-side slope 1 of a dam body, etc., and a plurality of water intakes 10 that communicate with the headrace 2 are provided at predetermined intervals in the height direction of the front wall 4. 10
are each provided with a slide gate 11, and an intermediate door stop wall portion 6 is provided at the lower front surface of each water intake port 10,
In a type of water intake equipment in which a surface water intake gate 9 is raised and lowered parallel to the slope 1 by a lifting rope 8 and follows the water level in front of the intermediate door wall 6, the water intake gate 9 has an upper end of the gate body 21. A surface water intake gate in which a water intake basin 22 protruding forward is installed vertically, and an overflow part 22A of this water intake basin 22 is expanded in a trumpet shape.