JPH01250512A - Cylinder gate of multistage means - Google Patents

Abstract

PURPOSE:To widen the range of an intake, by combining a wall having a drainage port, with two filters, in the shape of the triangle of a horizontal cross-sectional area, and by setting a cylinder gate in a surrounded space. CONSTITUTION:The side wall 10 of a drainage section set at a dam or the like is lined with two filters 13 in the shape of the rough triangle of a horizontal cross-sectional area. After that, on the side wall 10 and the engaging sections of the filters 13, respectively, rails 11, 12 are erected, and on the rails, a telescopically moving cylinder 14 is set to be freely elevated, and the lowest end of the cylinder 14 is set on a drainage port, and the top section is set confronted with the filters 13. Then, intake water is run into a pair of mouthpieces 15, 15 opening over all the widths of the filters 13, through the two filters 13. As a result, around and in the mouthpieces, eddy or turbulent flow is hardly generated, and surface water can be attracted in a wide range.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a multistage cylinder gate for surface water intake in dams and the like.

(Conventional technology) Roller gates and cylinder gates have traditionally been used in dam selective water intake equipment. However, multi-stage roller gates have heavy gate bodies and are uneconomical because they require grooves to be installed according to the number of gate stages, and cylinder gates have a screen surrounding the water intake gate. Because it is wrapped around a circuit, it is heavy and has problems such as maintenance costs such as repainting.

Kirimi Dam's water intake facility was constructed to solve these problems.

As shown in Figures 10 and 11, Kirimi Dam's water intake equipment has a multi-stage pipe structure similar to that of a cylinder gate, with the intake gate 2 having a lanopa-shaped intake only on the L flow side, and three sides facing It is installed in a space surrounded by a concrete wall 3 so that it can be raised and lowered freely. In the figure, 4 is Saimaki E machine, 5 is a wire rope for raising the intake gate, 6 is an inspection pedestal for supporting the inspection stairs and the lower end of the reduced intake gate, 7 is a screen, and 8 is a drain.

(Problem to be Solved by the Invention) In the above water intake equipment, an inspection staircase is arranged on the back side of the cylinder gate, that is, on the side wall surface, and an inspection frame is housed. It is necessary to protrude it. Therefore, even if the spout is wide,
Its scope is limited and construction costs are high.

In the present invention, two filters are attached to a side wall surface to form a substantially triangular space without protruding a concrete wall, and the inside of this space is located as close as possible to the side wall surface. By arranging the cylinder gate to move up and down, the present invention provides a multistage cylinder gate that has an extremely wide water intake range and is inexpensive to construct.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides surface water intake equipment installed in a dam etc., in which a first rail (11) is installed vertically on a side wall (10) of a drainage location. A second rail (12) is attached to the side wall, and a second rail (12) is erected parallel to the rail at a position away from the side wall, and extends from the vicinity of the second rail (12) toward the side wall (lO). and said pair of rails (1
1, 12) surrounding two filters (13)
and the pair of rails (11, 12) flJI
A plurality of telescopic cylinders (14) are provided so as to be movable up and down, the lowermost end of the cylinder (14) is connected to a drain port, and the uppermost cylinder (14) is equipped with the two filters (13). A pair of spouts (15, 15) are provided facing each other and opening over substantially the entire width of the filter (13).

(Function) Since the present invention has the above configuration, the water intake is 2 times.
It passes through two filters and flows into a pair of spouts that are open over the entire width of the filter. Since the spout is located as close as possible to the side wall, surface water can be sucked in over a wide range of angles with almost no eddies or turbulence occurring in the area around the spout or inside the spout.

During construction, there is only a slight overhang of concrete around the gate, and the framework is simplified, reducing construction costs.

An inspection stand for reducing the cylinder and raising it to the inspection position and supporting its lower end may be movably provided at a position crossing the cylinder hoistway from the second rail side.

(Example) Embodiments of the present invention will be described based on the drawings.

A drainage port 20 is provided near a side wall 10 of a dam or the like.

A low wall 21 is constructed surrounding the drain 20. and,
A first rail 11 is vertically attached to the side wall 10, and a second rail 12 is erected and faces the first rail 11 in parallel. The lower part of the second rail 12 is attached to the inner wall of the fence 21, and the upper part is attached along the support column 22a. Two girders 22b extend diagonally from the support 22a to the side wall 10 to form a substantially triangular space as shown in FIG.

In IQa, a filter 13 is installed in each portion where the 0 digit 22b, which is an overhang peer, is located.

1st. A plurality of telescopic cylinders 14 are provided between the second rails 11, 12 so as to be movable up and down while being guided. The cylinder 14 is formed by sequentially connecting cylindrical bodies having different diameters, and the lowermost cylinder 14 is normally connected to the drain port 20. On the outer surface of each cylinder 14, an auxiliary girder 23 having a recess similar to the cross-sectional shape of the rail is protruded so as to be located on the opposite side. are mounted in groups of three to smoothly guide the cylinders 14 along the rails 11,12. The first rail 11 may be two rails as shown in FIG. A pair of spouts 15 facing the two filters 13 and opening over substantially the entire width of the filters 13 are attached to the uppermost cylinder 14 . Drinking mouth 15
As shown in FIG. 1, the water guiding section includes a cylinder 14 at the top that opens approximately at the center, and a side wall located on the side wall IO side.
5a. The pair of spouts 15 are arranged symmetrically with respect to the opening. The shape of the side wall 15a was determined through wood grain experiments, and is designed to allow running water to flow smoothly without stagnation. As shown in FIG. 2, an inverted cone 14b whose center is aligned with the center of the cylinder 14 is attached to the ceiling.

The auxiliary girder 23 fixed to the uppermost cylinder 14 connects the connecting rod 2 to the hanging girder 25 located above the uppermost cylinder 14.
The parts are connected as appropriate by B.

A pulley 27 is rotatably attached to the upper surface of the hanging girder 25, and the pulley 27 is connected to a winding rock (not shown) attached to the upper part of the frame structure 22 so that it can be hoisted up using a wire rope 28. . 30 in FIGS. 3 and 4 is an operation room in which a hoisting rock is installed.

In the middle of the frame structure 22, as shown in FIGS. 3 and 4, a one-inspection stand 31 is attached for horizontal movement. The details are shown in FIGS. 7 to 9.

The position where the inspection stand 31 is installed is that when all the cylinders 14 are reduced and raised to the highest level with a hoisting machine while maintaining the reduced state, it can be moved to the bottom of the reduced all cylinders 14. This is a possible position. At this location, a pair of rotating rails 32 are attached, which are rotatably pivoted at a position in contact with the side wall 1O. Take. In the horizontal position, the tip can be received by the frame girder 33. The interval between the pair of rotation rails 32 is the lowest cylinder (having the maximum diameter) 1
4, and in a state leaning toward the side wall 10, the entire reduced cylinder 14 can pass through the cylinder hoistway without any obstruction.

The rotating rail 32 forms a pair of rails together with the fixed rail 34 on the frame girder 33. An inspection stand 31 having wheels on a pair of rails straddles the rail.

Since the inspection stand 31 crosses the support column 22a and the rail 12, the support column 22a and the rail 12 have a cutout structure. As shown in FIG. 9, in the column 22a, a gate-shaped frame 35 is attached to the upper surface of the pedestal girder 33, and the circular frame 35 supports the upper part of the column 22a.The 0-inspection pedestal 31 is a circular frame. 35 through the side wall 10
You will be moving on the rail towards. A notched rail portion 12a having a length that fills the notched interval of the rail 12 is fixed to the rear surface of the inspection pedestal 31, and the inspection pedestal 31 is fixed at the farthest position from the side wall lO.
・Install the inspection stand 3 so as to fill the notch in the rail 12.
1. During water intake, all cylinders are below the inspection pedestal 31, so the inspection pedestal 31
may be moved to position 31 in Figure 7.
In the figure, 33a is a stopper.

(Effects of the Invention) Since the present invention has the above configuration, it has the following effects.

■ There is no need to maintain a hydraulically limited distance between the cylinder and the side wall of a dam, etc., and the cylinder can be positioned as close to the side wall as the surrounding conditions allow, making it ideal for extending concrete walls. Since this is not necessary, construction costs can be reduced.

■ Since the spout faces in two directions, water can be taken from a wider area than with a single spout.

■ Since the frame structure has a two-sided structure, the weight is reduced.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional plan view of the vicinity of the spout of the cylinder gate of the present invention, FIG. W42 is a partially cutaway side view of the vicinity of the spout, and FIG. 3 is an overall side view of the cylinder gate of the present invention. Fig. 4 is a front view thereof, Fig. 5 is a sectional view taken along line A-A in Fig. 4, Fig. 6 is a sectional view taken along line B-B in Fig. 4, and Fig. 7 is for inspection. FIG. 8 is a side view of FIG. 7; FIG. 9 is a front view showing the relationship between the portal frame and the inspection mount; FIG. 1O is another embodiment of the present invention. FIG. 11 is a side view of a conventional cylinder gate, and FIG. 12 is a cross-sectional plan view of the vicinity of a conventional spout. 10, , , , , side wall 11, +2. , , Rail 13 , , Filter 14 , , Cylinder 15 , +5. ,,,, Noguchi Patent Applicant Toyokuni Kogyo Co., Ltd. (and 2 others) Fig. 2 Fig. 5 Fig. 6 Fig. 7 Fig. 9 Fig. 10 Fig. 11 Fig. 12

Claims (1)

[Claims] (1) In surface water intake equipment installed in a dam, etc., a first rail is attached vertically to the side wall of the drainage point, and a second rail is attached parallel to the rail at a position away from the side wall.
rails are erected, two filters are stretched from a support supporting the second rail toward the side wall so as to surround the pair of rails, and a plurality of telescopic filters are provided between the pair of rails. The cylinder is provided so as to be movable up and down, and the lowermost end of the cylinder shaft is connected to a drain port, and the uppermost cylinder has a pair of openings facing the two filters and extending over substantially the entire width of the filters. A multi-stage cylinder gate featuring a spout.