JPS585701Y2 - Cylinder type surface water intake device - Google Patents

Description

[Detailed explanation of the invention] This invention allows stored water to flow in from the intake plate opening at the top of the intake pipe by moving the telescopic multi-stage intake pipe installed at the front of the water intake tower up and down according to the water level. This invention relates to a cylindrical surface water intake device.

Conventional surface water intake devices of this type are equipped with a guide rail on a separate water intake tower outside the intake pipe, or a guide rail is embedded in the dam body of the dam and the intake plate at the top of the intake pipe is placed along this guide rail. This allows water intake to be raised and lowered by providing both vertical guidance and lateral support.

However, in this type of surface water intake device, in order to slow down the inflow speed of the water intake (spout) at the top of the water intake pipe compared to its intended use, an intake plate with a diameter much larger than the inner diameter of the water intake pipe is installed, or a float type water intake is installed. Since it is common to form a large water intake with a float, the distance from the middle and lower intake pipes to the guide rail of the water intake tower is long. A guide roller is installed at the bottom to support a series of water intake pipes.

In addition, the mutual support of the pipes is provided by the outside of the lower (or upper) part of the main pipe and the upper part (
(or lower part) A pair of guide rollers are installed on the inside so that they move up and down using the inner and outer surfaces of each tube as guides.

Therefore, with this type of structure, the lateral forces caused by wind and wave pressure must be supported by a beam with the uppermost arm and the lowermost part of the intake pipe as fulcrums, and the rollers that support the pipes must be supported in the vertical direction. When the distance is short, an extremely large force is applied to a portion of the roller to support the moment between the fulcrums, and the degree of bending is large due to the gap between the roller and the water intake pipe, which is required for structural manufacturing. It is unstable, and the rubber backing that is attached for watertightness may become over-compressed or may become separated on the opposite side, reducing the original action of the watertight rubber.

There is also a high risk of foreign objects getting stuck in the gap between the rubber and the water intake pipe.

In particular, in order to cope with horizontal forces during earthquakes, it is necessary to increase the thickness of the intake pipe or install reinforcing materials, which is uneconomical.

This invention has been improved in view of the above-mentioned drawbacks, and has the structure described in detail below to increase stability and rationally support the intake pipe against wind wave pressure, seismic force, etc., and to raise and lower the intake pipe. The design aims to improve strength and rigidity by smoothing the surface, and increasing watertightness to prevent excessive force from acting on it.

The details will be explained below with reference to the embodiments shown in the drawings.

In Fig. 1, 1 is a plurality of cylinders 1at with different diameters.
1b... is a series of intake pipes that are stacked in a multistage manner so that they can be expanded and contracted vertically, and each cylinder has a diameter that increases as the lower cylinder goes up, and the upper cylinders fit into the hollow interior of the cylinder in turn. When pulled out, it becomes a single hollow tube.

Reference numeral 2 denotes a water intake board provided at the top of the water intake pipe 1 , which has an inlet (spout) 3 opened around it and a screen 4 .

5 is a float, which is attached to the upper part of the water intake board 2, but this float may not be provided in some cases.

Reference numeral 6 denotes a pillar (center post) erected at the center of the water intake pipe 1, and the water intake pipe 1 moves up and down using the pillar 6 as a guide.

Each cylinder 1at1b that constitutes the water intake pipe 1...
- As shown in FIGS. 2 and 3, arms 7 are provided protruding from the inner surface of each lower part toward the central column 6 at equal intervals and at equal angles, and a guide roller 8 is attached to the tip.

The guide roller 8 comes into contact with the outer surface of the column 6 to support the lateral force and guide the vertical movement.

Another guide roller 9 is provided on the upper inner surface of each cylinder 1a, 1b, . ing.

Further, a watertight rubber 10 is provided at the upper end of each of the cylinders 1a, Ib, .

Numerals 11 and 12 are locking pieces that prevent the inner and outer cylinders from being pulled out.

13 is a water intake tower fixed upright in parallel with the water intake pipe 1, and a machine room 14 is provided in the upper part above the water surface.

Reference numeral 15 denotes a lifting beam driven by a hoisting machine 16, which is suspended from a rope 17 to move up and down, and by hooking the float 5 or water intake board 2 to the hook 18, the entire beam is lifted when necessary.

Reference numeral 19 denotes a water control gate, which is suspended by a rope 21 of a winding machine 20 in the hollow interior of the water intake tower 13 and moves up and down to open and close the lower intake channel 22 that communicates with the inside of the intake pipe 1; has been raised to.

23 is a connecting bridge. Among the guide rollers 8 provided at equal intervals around the circumference, those facing each other in the front and rear or left and right directions, or several suitable rollers, are used as grooved rollers having grooves 8a as shown in FIG. The guide rails 6aVc provided in the longitudinal direction are fitted.

In this way, each cylinder 1 is connected to the fixed column 6.
It is possible to accurately guide vertical movement of a, lb, . . . without floating or wobbling in the rotational direction.

The hoist 16 is hoisted onto the lifting beam 15.
When the water intake pipe 1 is lifted by the water intake pipe 1, or when the water intake plate 2 moves up and down according to changes in the water level of the stored water, the arm 7
The guide roller 8 at the tip of the column rolls on the outer surface of the column 6, and the guide roller 9 rolls on the outer surface of the cylinder (1b in Fig. 2) fitted in the upper part of the cylinder, so that the The structure is supported by the central pillar 6,
The pipes are always supported at the same distance and long length in the vertical direction, and there is no excessive support force between the pipes, large bends, or problems with the watertight rubber part, so the pipes can be installed smoothly with stable support force. In addition to being able to raise and lower the water pipe, it improves strength and rigidity, reduces the risk of foreign matter (7)'5 being trapped, and requires only the screen to be installed at the spout, making it highly economical and structurally efficient. It also has a simplified structure, is durable, and easy to implement.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional side view of the entire device of the present invention, FIG. 2 is an enlarged sectional view of the water intake pipe connection part, and FIG. 3 is a lateral plan view of the same. 1... Water intake pipe, 1a, 1b... Cylinder 2...
・Water intake board, 3...Water intake, 4...Screen 6・
...Column, 7...Arm, 8, 9...Guide roller 6a...Guide rail 8a...Groove.

Claims (3)

[Scope of utility model registration request] (1) Multiple cylinders with different diameters are stacked in stages so that they can be expanded and contracted vertically to form a series of intake pipes, and a pillar is erected at the center of the intake pipe, and each cylinder has a lower or upper inner surface of the husband. A cylinder characterized by having several arms protruding toward the central column, and a guide roller attached to the tip of each arm so that a series of water intake pipes move up and down using the central column as a guide. Type surface water intake device. (2) In the cylinder type surface water intake device according to claim (1) of the utility model registration, vertical movement is guided by the outer surface of the cylinder inserted into the upper or lower inner surface of each cylinder, respectively. This is equipped with another guide roller. (3) In the cylindrical surface water intake device according to claim (1) of the utility model registration, the central pillar in the water intake pipe is fitted with a groove of a guide roller attached to the tip of the arm on its outer peripheral surface. A guide rail is provided to guide movement in the vertical direction.