JPS6223852Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a surface water intake device equipped with a water intake gate that moves up and down in accordance with the water level for taking in surface water from a dam reservoir, settling pond, etc.

Conventionally, as a surface water intake device, a plurality of water intake cylinders are provided that can be expanded and contracted in the vertical direction, and the upper end of the topmost cylinder is provided with a water intake basin (water intake plate) that expands into a ragged shape, and a floating plate is provided above the water intake basin. A floating cylinder gate is known in which the lower end of the lowermost cylinder is connected to the water conduit (see Japanese Utility Model Publication No. 57-28913). and the outer peripheral edge of the water intake basin is located within the same vertical cylindrical plane as the outer peripheral edge of the float, or extends further outward than the float,
It is generally designed to prevent the cold water below the intake basin from being drawn in. However, although entrainment of cold water is prevented, since the flowing water hits the outer circumferential surface of the float, the situation of flowing in is noticeable and there is a problem that the flow of surface water is difficult to stabilize.

The purpose of this invention is to solve the above-mentioned problems and to obtain a surface water intake device in which the flow is not noticeable and the flow is stable.

In other words, the feature of this invention is that in a surface water intake device in which a float whose lower side is a rectifying plate is attached above the upper end water intake plate of the gate (including cylinder gate, semicircular gate, and flat plate gate). , a water flow stabilizing vane plate that protrudes further outward than the outer end of the water intake plate is attached to the outer edge of the float. According to this invention, since the stabilizing blades are almost horizontal and are positioned below the water surface and floating, the water flow flowing into the outer edge of the baffle plate at the outer end of the float is directed toward the stabilizing blade plate. As a result, the flow is horizontal, and the flow near the end of the stabilizing vane also becomes horizontal, making the flow completely inconspicuous.

Hereinafter, embodiments of this invention will be described in detail with reference to the drawings.

Figures 1 and 2 show a surface water intake device consisting of a vertical cylinder gate, and the cylinder gate 1 consists of a plurality of water intake cylinders 1A, 1B, 1
C and 1D are configured to be expandable and retractable in the vertical direction, and are supported via a support arm 5 having a guide roller 4 at the tip of a guide rail 3A fixed to a water intake tower 3 installed upright in a reservoir 2, etc. , and is designed to be guided up and down according to changes in the water level. At the upper end of the uppermost cylinder 1A, there is provided a water intake plate 6 in the shape of a flap that expands outward.
The lower end of the lowermost cylinder 1D is communicated with the buried water conduit 7. And each cylinder 1A~1
A locking ring (not shown) is provided at the connecting part of D, so that each of the lower cylinders 1B to 1D can be suspended from the uppermost cylinder 1A, and each is made of watertight rubber (not shown). Water other than surface water is prevented from flowing into the cylinder gate 1. On the water intake plate 6 of the uppermost cylinder 1A, approximately top-shaped hollow floats 8 are attached by tension rods 9 at predetermined intervals. The lower side of this hollow float 8 is a rectifying plate 8A.
The outer circumferential edge 8B is in the same cylindrical plane as the outer circumferential edge 6A of the water intake plate 6, and a donut plate-shaped water flow stabilizing vane plate 10 projects approximately horizontally on the outer circumferential edge 8B of the current plate. It is set up. This water flow stabilizing vane plate 1
A stiffener 11 whose inner end is fixed to the outer peripheral surface 8C of the float is fixed to the upper surface of the float.

Note that the tension rod 9 extends upward from the upper surface of the float 8 and is connected to the lifting beam 1.
2 is installed. Further, the stability of the float 8 can be improved by attaching a guide roller (not shown) to the outer peripheral end of the water flow stabilizing vane 10.

In the first embodiment of this invention, since the water flow stabilizing vanes 10 of the cylinder gate 1 are located at a predetermined position below the water surface, the water flowing toward the water intake opening 13 becomes an almost horizontal flow, and the flow situation is not noticeable. In addition, the stability of the flow is improved, vibration of the float 8 is prevented, and stable water intake can be smoothly performed.

FIG. 3 shows a second embodiment of this invention, which is a water intake device in which a cylinder gate 21 is configured to move up and down along a guide rail 23 arranged on an inclined surface of a dam reservoir, etc. The view is shown upward from the top of the top cylinder 21A. In this second embodiment, the uppermost cylinder 21A is
The upper end is curved so that the outer end of the water intake plate 26 is in a substantially horizontal state. Each cylinder 21A and lifting beam 32 is supported and guided by framed support arms 25 and 35 on the inclined guide rail 23 via guide rollers 24 and 34 attached to the lower ends thereof. The lifting beam 32 is connected to both outer sides of the support arm 25 of the uppermost cylinder 21A by tension rods 33. The float 28 is attached to the water intake plate 26 by a tension rod 29, and the float 28 is attached to the water intake plate 26 by a tension rod 29.
The end of 8A is extended to form a water flow stabilizing vane 30, and a stiffener 31 is fixed to the lower side of the vane 30. The upper end of a screen 36 surrounding the outer peripheral end of the water flow stabilizing vane 30 is attached. Each lower end of the screen 36 is attached to a mounting ring 38 extending from below the water intake plate 26 via a support member 37.
A screen 39 is also attached. In addition,
A ring-shaped stabilizing vane may be attached to the lower side of the water flow stabilizing vane 30.

This second embodiment also operates in the same manner as the first embodiment, and is expected to have the same effects.

The embodiment of this invention is for a cylinder gate type, but the door body has a semicircular cross section or an arc shape close to this, and can be expanded and contracted by an appropriate number of arcs so that the arc bulges toward the upstream side. It can also be used for surface water intake gates that allow the door body to expand and contract in response to changes in water level in combination with water level.Furthermore, it can also be used for surface water intake gates with arm-type water intake pipes and water intake plates protruding from the top end of flat gates. Of course, it can also be used for gates, etc.

Since the surface water intake device according to this invention has the above-mentioned configuration, by simply installing the water flow stabilizing vanes, which have an extremely simple structure, the flow is not noticeable, the flow is stable, and the vibration of the float is reduced. This has the effect of eliminating water from the surface and allowing smooth and effective surface water intake.

[Brief explanation of the drawing]

Figures 1 and 2 show the first embodiment of this invention, in which Figure 1 is a central longitudinal sectional front view, Figure 2 is an enlarged sectional view of the upper part, and Figure 3 is a schematic diagram showing the second embodiment of this invention. FIG. 1, 21...Cylinder gate, 1A, 21A
...Top cylinder, 8,28...Float,
8A, 28A... Current plate, 9... Tension rod, 6, 26... Water intake plate, 10, 30... Water flow stabilizing vane plate.

Claims (1)

[Scope of utility model registration request] In a surface water intake device in which a float whose lower side is a rectifying plate is attached above the water intake plate at the upper end of the gate, a water flow stabilizing blade is provided on the outer edge of the float and protrudes further outward than the outer edge of the water intake plate. A surface water intake device characterized in that a board is attached.