JPS62228509A - Intake equipment of dam - Google Patents

Abstract

PURPOSE:To obtain surface intake equipment having high water tightness by a method in which an intake tube of an arch-shaped cross section is formed in a bellows form, a pair of guide rails are provided vertically for the wall face of a dam body, and the vertical end of the intake tube is slidably attached to the rails. CONSTITUTION:Above an intake tube 3 communicating with a water conveyance tube 5, a pair of guide rails 6 are attached vertically to the wall face of a dam body 4. An arch-shaped skeleton frame 7 of an intake tube 3 consisting of a bellows-shaped outer tube made of a rubberized cloth is attached to the rails 6 and slidably moved by a roller 10. In taking surface water, the vertical positions of a mouthpiece 13 at the upper end of the tube 3 are regulated by a winder 15 on the dam body 4. Since the tube 3 made of rubberized cloth has a bellows form, the leakage of water from the tube 3 can be avoided because of the absence of coupled portion on the tube 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water intake device that takes water from a dam or the like for use as agricultural or industrial water.

[Conventional technology]

Conventional water intake devices installed in dams, etc., change the water level depending on the season and water usage conditions, and depending on the purpose of use, surface water intake or selective water intake is performed, so the water level can be adjusted by raising and lowering the intake. It is designed to respond to changes in the The method for raising and lowering this spout is as follows:
The intake pipe was installed vertically below the water surface and was designed to be expandable and retractable, and the intake pipe was expanded and contracted using the buoyancy of a float attached to the mouth and a hoist to raise and lower the mouth.

FIGS. 6 and 7 show conventional examples of water intake devices used for the above purpose, in which the water intake pipe has a semicircular cross section. In this water intake device 51, a water intake pipe 54 having a semicircular cross section is attached so as to surround a water intake groove 53 provided vertically on the upstream side of an embankment body 52. This water intake pipe 5
4 consists of three stages, the lowest stage water intake pipe 54e is fixed to the base, and the middle stage and upper stage water intake pipes 54b, 54. a
are fitted, and can be expanded and contracted in the vertical direction along the bank body 52. At the top of this upper water intake pipe 54a! m
A plate 55 is attached to form a spout 56, and
The current plate 55 is suspended by a hoist 58 provided on a workbench 57 extending from the top of the embankment body 52. Further, a dust removal screen 59 is attached to surround the water intake pipe 54, and a water conduit pipe 60 is provided at the bottom of the water intake groove 53, and an emergency gate 61 is provided at the entrance thereof.

With the above structure, the water intake pipe 54 is expanded and contracted by the hoisting machine 58 in accordance with changes in the water level 63 of the dam, and the mouth portion 56 is moved up and down to intake water.

[Problem that the invention seeks to solve]

In this way, the water intake device 51 has good hydraulic properties because the water intake pipe 54 has a semicircular shape with respect to the upstream side, and the water intake device 51 has good hydraulic properties.
Since the water intake pipes 54 are supported by the water intake pipes 2, this is advantageous in terms of structure, and the civil engineering structure for supporting the water intake pipes 4 is also simplified.

However, each water intake pipe 54a, 54b, 54c
Since it has a semicircular shape, it is difficult to make the fitting part completely watertight, and in the case of surface water intake, there is a problem that the water intake temperature changes depending on the pond water. There is also the problem that the watertight structure becomes complicated, leading to increased manufacturing and installation costs.

The present invention was made to solve the above problems, and
To provide a water intake device having a simple structure using a bellows-shaped water intake pipe and having excellent water retention properties.

[Means for solving problems]

In the present invention, an intake pipe having an arch-shaped cross section is bent into a bellows shape so that it can be expanded and contracted in the vertical direction, and the vertical end of the intake pipe is slid onto a guide rail provided along the wall surface of the embankment. It is characterized in that it is movably attached and the water intake pipe expands and contracts as the water level fluctuates to take in water.

[For production]

It is constructed as described above, and when the mouth part attached to the top of the intake pipe is raised and lowered in response to changes in the water level of the dam,
The intake pipe expands and contracts in the vertical direction while being guided by the guide rail. In this way, the surface water of the dam is taken in from the mouth and guided to the water pipe that penetrates the bottom of the dam body.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. Figure 1 is a longitudinal cross-sectional view showing the overall configuration of the water intake device, Figure 2
The figure is a partial longitudinal sectional view showing the structure of the intake pipe, FIG. 3 is a skeleton diagram of the intake pipe, FIG. 4 is a horizontal sectional view of the guide rail, and FIG. 5 is a sectional view of the mouth part.

The water intake device 1 consists of a water conduit connecting pipe 2 and a water intake pipe 3. The water conduit connecting pipe 2 is connected to the embankment body 4 on the upstream side of the conduit pipes passing through the bottom of the embankment body 4 so as to cover the inlet of the water conduit pipe 5. Fixed. The water intake pipe 3 is installed on the upper part of the water supply connection pipe 2, and its structure has a semicircular shape as shown in FIG. A frame 7 assembled on the bridge is placed over the bridge. The guide rail 6 is the fourth
As shown in the figure, it is mounted on a base hardware 8 fixed to the embankment body 4 and has a C-shaped square groove 9, within which rollers 10 attached to both ends of the framework 7 rotate. It is freely interlocked. In this way, on the semicircular outer circumferential side of the frame 7 attached to the guide rail 6.

The outer tube 11 is made of a flexible material, such as a rubber-coated cloth sheet, and is bent into a bellows-like shape so as to be expandable and contractible. At the top of the water intake pipe 3 configured as described above,
As shown in FIG. 5, a drinking spout 13 having a screen 12 on its circumferential surface is attached, and its lower part is joined to the water guide connection pipe 2.

Furthermore, the water intake pipe 3 is connected to the intake pipe 13 by a hoisting machine 15 installed on a workbench 14 extending from the upper surface of the embankment body 4.
is suspended so as to maintain a predetermined height. Note 1
Numeral 6 denotes chains, which are provided in a plurality of rows in the vertical direction at appropriate intervals outside the water intake pipe 3, and each frame 7 is suspended to reduce the back strain applied to the outer pipe 11.

The water intake pipe 1 is configured as described above, and the water level of the dam 2
When the hoisting machine 15 is activated in response to changes in the intake pipe 1 to raise and lower the mouth part 3, the outer pipe 11 of the intake pipe 3 is bent into a bellows shape, and the outer pipe 1 is held. Since the four ridges 7 are moved together within the guide rail 6 by the rollers 10, the water intake pipe '3 expands and contracts while being guided by the guide rail 6. Therefore, the mouth part 1 is designed to correspond to fluctuations in the water level between the upper limit water level 21 and the lower limit water level 21' of the dam.
3 is raised and lowered, the water intake pipe 3 also expands and contracts as it rises and lowers, and water can be taken from the surface of the dam from the mouth part 13.

(Effects of the Invention) As explained above, in the present invention, the water intake pipe is formed in an arch shape toward the upstream side, and the water intake pipe is supported and guided by the embankment body, so that hydraulic efficiency and stability are improved. In addition to being advantageous in terms of structure, since the receptacle 7 and the pipe are integrated into a single piece, it is easy to manufacture, has good elasticity, and can accommodate a wide range of water level changes. In addition, since the water intake pipe has no sliding parts or fitting parts, there is no problem that the water intake temperature changes due to filtered water, and it is possible to reduce equipment costs and perform proper surface water intake.

[Brief explanation of drawings]

Figures 1 to 5 are examples of the present invention and car on the 1st floor)',)
, Figure 1 is a vertical cross-sectional view showing the overall structure of the water intake device, Figure 2 is a partial vertical cross-sectional view showing the structure of the water intake pipe, Figure 3 is a framework diagram of the water intake pipe, and Figure 1 is a guide 1. - cross-sectional view of the main plane, No. 3)
4 is a cross section of the spout [4, FIG. 6 is a 5ivIi side view showing the overall configuration of the conventional water intake device, and FIG.・・・・・・Eisui tribute, 2・・・Water collection pipe, 4
...Empty body, 5... Water pipe, 6...
Guide rail, 11...Outer tube, 13...
・Application submitted by Kawasaki Heavy Industries Co., Ltd. Agent Motokan Honma 2 Zutoshi 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 1

Claims (1)

[Claims] An intake pipe with an arch-shaped cross section is bent into a bellows shape so that it can be expanded and contracted in the vertical direction, and the vertical end of the intake pipe can be slid on a guide rail provided along the wall surface of the embankment body. installation,
A water intake device for a dam that is characterized by extracting water by expanding and contracting the intake pipe as the water level fluctuates.