JPS6019138Y2 - Door opening/closing device for water intake equipment - Google Patents

Description

[Detailed description of the invention] This invention is a method for opening and closing intake holes arranged vertically on side walls or water intake towers to take in surface water or intermediate water from dam reservoirs and sedimentation ponds. Regarding door opening/closing devices.

Conventionally, a vertically long gate with an approximately U or approximately semi-cylindrical cross section, a bottom plate and an open top and rear side was placed along the front of the reservoir side wall (or water intake tower), and a gate with a length shorter than the vertical length of the gate was installed on the reservoir side wall. Several water intake holes, each with opening/closing doors on the downstream side, are arranged in a row in the vertical direction with a distance between them, and a vertically long gate is lowered from the upper intake hole to cover the lower intake hole, and the intake holes facing the gate are lowered. Water intake devices in which doors are opened sequentially are already known.

By the way, in conventional water intake devices of this kind, each opening/closing door must be provided with an opening/closing device (for example, a hydraulic cylinder), and most of these opening/closing devices are always located underwater. There are problems with maintenance, inspection, and troubleshooting.

This invention solves the above-mentioned problems by installing one door opening/closing machine on the side wall of the reservoir or the top of the water intake tower, and also connects each opening/closing door via a rod and a lock/unlock device. This was done with the aim of minimizing the number of machines installed.

That is, in this invention, water intake holes are provided at predetermined intervals in the vertical direction on the side wall of a dam reservoir or the front wall of a water intake passage provided in a water intake tower, and an opening/closing door is installed at the entrance or exit of each intake hole. In water intake facilities equipped with a They are connected to each other via an operating rod and a locking/unlocking device that enables them to be connected and separated.

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

Figures 1 to 7 show a first embodiment in which this invention is adopted for surface water intake equipment, in which a vertically long water intake is formed along the front wall IB of the hoistway IA formed at the front of the water intake tower 1. gate 2
is made to move up and down following the water level.

This water intake gate 2 has a flat plate shape, and has a water intake tray 2A at the upper end whose edges are expanded outward, and a screen 2B.
is provided, a bottom plate 2C is provided at the lower end, and an elevation path 1A is provided.
A watertight rubber (not shown) is attached to a portion in contact with the side wall IC, and is configured to move up and down while being guided by one groove ID.

In addition, this water intake gate 2 is suspended by a hanging rope 4 wound around a gate hoisting machine drum 3 installed on the top IE of the water intake tower, and the rotation of this hoisting machine drum 3 follows the water level. It is raised and lowered to ensure optimal water intake.

On the front wall IB of the water intake communication passage 5 of the water intake tower 1, there is a reservoir 01.
A plurality of water intake holes 6 penetrating between the sides, that is, the rear part of the gate;
7, 8, and 9 are arranged in the vertical direction at intervals shorter than the vertical length of the water intake gate 2, and openings on the downstream side (outlet side) of each intake hole 6 to 9 are provided with opening/closing doors 10, 11, respectively. ,12
, 13 are provided.

The lower end 5A of the water intake communication passage 5 is communicated with the entrance of the water intake pipe 14, and communicates with the waterway outside the reservoir.

The lower end of an opening/closing operation rod 15 is connected to the center of the upper end of the top stage opening/closing door 10, and the upper end of this operation rod 15 is connected to an opening/closing machine, that is, a hydraulic cylinder device 16 installed upright on the top end 1E of the water intake tower. This hydraulic cylinder device 1
6, the fully open/close doors 10 to 13 are opened and closed.

Door opening/closing operation rods 17, 18, and 19 are attached to both sides of the lower ends of the opening/closing doors 10 to 12, except for the lowest-stage opening/closing door 13, respectively.

Further, each of the doors 11 to 13 except for the uppermost door 10 has a connecting pipe 20 on the back surface of which is connected to the operating rod 1, the upper and lower ends of which protrude slightly from the upper and lower ends of the door body.
7 to 19 are installed in a position where they pass through, and this connecting pipe 2
A blind lid 21 is fixed to the lower end of the pipe 20 fixed to the opening/closing door 11° 12, and the upper end of the operating rod 18. They are connected via 24.

As shown in FIGS. 5 and 6, a lock/unlock device 25 is incorporated in the upper end of the connecting pipe 20. As shown in FIGS.

That is, as shown in detail in FIG. 6, this lock/unlock device 25 is fixed by bolts 26 or the like at regular intervals above and below the upper end of the connecting pipe 20, and has a rod inserted through the center. Support rings 29 and 30 each have holes 27 and 28, and a support ring 29 that is tightly fitted over the outside of the rod 18 and 19 and has upper and lower ends.
．． 30 and a metal sleeve 31 attached to each.

The support ring 29.30 is provided with a pressure oil supply port 32 and an unlock port 33, and these ports 32.33 communicate with the inside of the sleeve 31.

Also, the rod insertion holes 27 of the support rings 29 and 30.
Seal rings 34 and 35 are respectively fitted in 2B, and sleeve fitting holes 36 and 3 of support rings 29 and 30
7 are also fitted with seal rings 38, 39.

This sleeve 31 has a plurality of annular grooves 4b on its inner peripheral surface.
(or spiral groove) and both ends have an inner diameter of 3
1A is made larger, and the internal protrusion contact surface 31B is
The rods 17 to 19 are tightly fitted to the outside diameter of 7°18.19, and the rods 17 to 19 are mechanically locked at any position of the rod stroke S to connect them.

When pressure oil flows between the sleeve 31 and each of the rods 17 to 19, the sleeve 31 is expanded in the circumferential direction as shown by the two-dot chain line in FIG. 6 due to the elastic deformation of the metal. ~ Solve the interference of 19, rod 1
A clearance is created where 7 to 19 move up and down with minimal resistance.

Therefore, when the pressure oil is removed from the unlock port 33, the inner surface 31B of the sleeve 31 comes into close contact with the outer peripheral surfaces of the rods 17 to 19, the locking function is restored, and the two are connected.

Incidentally, reference numerals 41 and 42 are oil pipes connected to the ports 32 and 33, which are guided into the hydraulic unit 43 installed on the top IE of the water intake tower.

Further, the opening/closing doors 10 to 13 are prevented from lowering below this position by a stopper (not shown) when the water intake holes 6 to 9 are closed.

Next, the operation of the opening/closing door according to this invention will be explained with reference to FIG.

FIG. 7A shows a state in which all the water intake holes 6 to 9 are closed, and in this state, pressure oil is supplied to the lock/unlock device 25 of each opening/closing door 11 to 13 in its sleeve 31. Therefore, the sleeve 31 is in the unlocked state as shown by the two-dot chain line in FIG.
19, the opening/closing door 10 can be pulled up by the hydraulic cylinder device 16 to bring the water intake hole 6 into the fully open state as shown in the opening in FIG.

Therefore, when the pressure oil in the sleeve 31 of the lock/aflock device 25 of the opening/closing door 11 is removed from the unlock port 33, the sleeve 31 returns to its old state as shown by the solid line in FIG. 6, and the locking function is restored. , hydraulic cylinder device 16
When the opening/closing door 10 is pulled up, the opening/closing door 11 is also pulled up and the water intake hole 7 is opened, resulting in the state shown by C in FIG.

Further, the locking/unlocking device 25 of the opening/closing door 11 is left in the locked state, and the locking/unlocking device 25 of the opening/closing door 12 is also kept in the locked state as described above to move the waist opening/closing door 10 into the locked state using the hydraulic cylinder device 16. By pulling up, the opening/closing doors 10 to 12 are raised together, and the water intake hole 8 is also opened, resulting in the state shown in FIG. 7-2.

Furthermore, when the locking/unlocking device 25 of the opening/closing door 13 is also locked and the opening/closing door 10 is pulled up by the hydraulic cylinder device 16, all the opening/closing doors 10 to 13 are raised, the water intake hole 9 is also opened, and all the water intake holes 6 -9 is in the state of 1 open.

In this way, the opening/closing doors 10 to 13 are sequentially opened and closed in accordance with the water level of the reservoir 01, and surface water intake or selective water intake can be performed as desired.

In addition, when the opening/closing doors 10 to 13 are fully closed, the seventh
The operations can be performed in the reverse order of E → II → C → B → B as shown in the figure.

Since the door opening/closing device according to this invention is configured as described above, one opening/closing device for the water intake hole opening/closing door, such as a hydraulic cylinder device or a hoisting machine, can open and close a large number of opening/closing doors sequentially following the water level. It is possible to perform surface water intake or selective water intake, and the lock/unlock device connects and separates the upper and lower gates with ease, certainty, and high safety.Furthermore, the lock state can be maintained at any position during operation or rod stroke. Since the opening/closing door can be kept in a half-open state, the entire device has a simple structure, which is economical and easy to maintain and inspect.

In addition, the lock/unlock device 25 may have its connecting pipe 20 attached to the upper opening/closing door, and the operating rods 17 to 19 may be fixed to the upper end of the lower opening/closing door.

Furthermore, the connecting pipe 20 may be provided penetratingly inside the door, as shown in FIG. 9, instead of being attached to the back of the door as in the first embodiment. Of course.

FIG. 8 shows a second embodiment of this invention, in which a water intake communication passage 5 is provided along an inclined side wall 01A of a dam reservoir 01, and is opened in the front face of this side wall 01A and connected to the water intake communication passage 5. Penetrated water intake holes 6 to 9 are provided, and opening and closing doors 10 to 13 are respectively arranged on the side of the reservoir 01, and the opening and closing devices of the opening and closing doors 10 to 13 are the same as in the first embodiment. The same reference numerals will be used, and explanations of the configuration and effects will be omitted.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and Figs. 1 to 7 show the first embodiment of this invention. Fig. 1 is a schematic front view of the entire water intake facility, and Fig. 2 is the ■Longitudinal side view along the line, Figure 3 is a rear view of the opening/closing door, Figure 4 is a right side view of Figure 3, and Figure 5 is a vertical cross section showing the installation state of the lock/unlock device on the opening/closing door. Figure 6 is an enlarged sectional view of part ■ in Figure 5, Figure 7 is an explanatory diagram of the operation of the opening/closing door, Figure 8 is a vertical sectional side view showing the second embodiment of this invention, and Figure 9 is the lock. - It is a schematic sectional view showing an example of attachment of an unlocking device in a door body. 01... Reservoir, OIA... Side wall, 1
...Water tower, IB...Front wall, 1E.
...Top of side wall (or water intake tower), 5...
Water intake communication passage, 6-9... Water intake hole, 10-13.
...Opening/closing door, 15... Door opening/closing operating rod, 16... Opening/closing machine, 17-19... Operating rod, 20... Connection Pipe, 25...
・Nakatsuku unlock device.

Claims (1)

[Scope of utility model registration request] A water intake in which intake holes are provided at predetermined intervals in the vertical direction on the side wall of a dam reservoir or the front wall of an intake passage provided in a water intake tower, and an opening/closing door is provided at the entrance or exit of each intake hole. In the equipment, the top opening/closing door can be moved up and down by an opening/closing machine installed on the side wall or the top of the water intake tower, and each of the upper and lower opening/closing doors is connected to an operating rod connected to one of them and an operating rod connected to either side.・Door opening/closing devices in water intake facilities that are connected via lock/unlock devices that allow separation.