JP2538365B2 - Water level fluctuation type flow station - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water level fluctuation type flow station used for aeration purification of stored water.

(Prior Art) In a dam or the like that stores a large amount of water, a flow station is floated above the water surface to purify the stored water. In this flow station, the float that surrounds and holds the water flow generating machine is moored to the land part via a mooring rope, while the water intake pipe of the water flow generating machine is installed with the water intake port at a slight distance from the bottom of the pond. Therefore, it can be moved up and down according to the fluctuation of the water level. Then, the stored water at the bottom of the pond sucked into the submersible pump is sprayed into the atmosphere so that the stored water is subjected to aeration and is purified, and a beautiful landscape is added.

(Problems to be Solved by the Invention) In a conventional flow station, since it is expected that the ascending / descending height will increase the margin length of the mooring rope mooring the float, it may stop at about 2 m to 3 m. Many.

Therefore, in a dam or the like where the water level fluctuates significantly, the flow station tilts when the water level is low and the fountain posture of the water flow generating machine collapses, and when the water level is high, the water intake port of the water absorption pipe floats significantly from the bottom of the pond and the water mass at the bottom of the pond There was a problem that the aeration process could not be performed.

In view of such conventional circumstances, the present invention makes it possible to properly maintain the fountain posture of the water flow generating machine even when the water level changes greatly, and to evenly aerate the water mass at the bottom of the pond. The purpose is to provide a variable flow station.

(Means for Solving the Problem) A water level fluctuation type flow station of the present invention includes a float floating above the water surface, a water flow generating machine integrally attached to the float with the suction side facing downward, and the water flow generation. The draft pipe is connected to the float so as to extend downward to the suction side of the machine, and the draft pipe that can be expanded and contracted in the vertical direction, and one end is attached to the lower end of this draft pipe, and the other end is attached. The end of the mooring rope moored to the land and the float so that the middle part of the mooring rope is slidably held are attached to the float, and the vicinity of the end of the mooring rope attached to the lower end of the draft pipe is drafted. A rope holder for holding the rope in a vertical state along the pipe.

(Operation) In the water level fluctuation type flow station of the present invention, the float is moored at an arbitrary position on the water surface by the mooring rope, and the water flow generating machine attached to the float is
Water is sucked from the bottom end of the long draft pipe to generate an upward water flow. In such a state, when the water level drops, the float descends as the water level drops, so that the mooring rope having one end moored on land pulls the lower end of the long draft. At this time, since the mooring rope is in a state where the portion near the end attached to the lower end of the long draft is vertically held by the rope holder attached to the float, the long draft is , Surely contracted.

Even when the water level rises, since the rope retainer holds the portion near the end of the mooring rope attached to the lower end of the long draft in a vertical state, the long draft is reliably extended. It

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The water level fluctuation type flow station 1 shown in FIGS. 1 and 2 is a reservoir B in which the water level fluctuation of a dam or the like is extremely large.
Applied to the float 2, rope retainers 3,3,
Water flow generator 4, long draft 5 and mooring rope 6,6
The main part is configured.

That is, the suction side of the water flow generating machine 4, which is held by the float 2 so as to be able to move up and down so as to follow the fluctuation of the water level in the reservoir B, is connected to a mounting flange 13 of an elongated draft 5 which is expandable and contractible, which will be described later. The long draft 5 includes the rope binding metal fittings 20 and 20 at the lower end of the long draft, which will be described later.
Mooring piles 8,8 driven into the onshore section 7 surrounding Reservoir B
The suction depth D can be adjusted by adjusting the length of the mooring ropes 6, 6 that connect with (only one side is shown).

The float 2 is provided with a float body 2b on an outer peripheral portion of a frame 2a, and anti-rotation rods 2c, 2c standing upright inside the float body 2b are hooked metal fittings 4a, 4a of the water flow generating machine 4. Are engaged.

In the lobe holders 3, 3, rollers 3b are pivotally supported by brackets 3a fixed at symmetrical positions on the outer circumference of the float 2, and the mooring rope 6 is hung inside the rollers 3b. Each rope holder 3 holds a portion near each end of each mooring rope 6 attached to the lower end of the long draft 5 in a vertical state along the long draft 5. Instead of the roller structure of this example, the rope holders 3, 3 may be one in which the mooring rope 6 is passed through a slippery annular body.

The water flow generating machine 4 is a known two-stage fountain device, in which the water sucked by the submersible pump 4b is ejected radially from the nozzle N so as to cover the float 2.
It is configured so that the aeration process is performed by falling onto the surrounding water surface while splashing the water.

The long draft 5 is provided in a multi-stage telescopic structure in which an upper cylinder 10, an intermediate cylinder 11 and a lower cylinder 12 are fitted in order.

A mounting flange 13 and an upper receiving flange 14 are provided at both ends of the upper tubular body 10, an intermediate hooking flange 15 and an intermediate receiving flange 16 are provided at both ends of the intermediate tubular body 11, and a lower tubular body 12 is provided. A lower hooking flange 17 and a lower receiving flange 18 are provided at both ends of the. Long draft 5
When the length is shortened, most of the intermediate cylinder body 11 and the upper cylinder body 10 are accommodated inside the lower cylinder body 12, while when the long draft 5 is extended, the upper receiving flange 14 of the upper cylinder body 10 is The intermediate hooking flange 15 of the intermediate cylinder 11 and the lower hooking flange 17 of the lower cylinder 12 are supported on the intermediate receiving flange 16 so that the maximum extension length is regulated. ing. 19 ... Reinforcing ribs provided on the cylindrical portion of the lower cylindrical body 12. 20 and 20 are metal fittings for binding the rope.

Although only one intermediate cylinder 11 is shown in this example, when the depth of the reservoir B is deeper, the number of intermediate cylinders 11 is increased in multiple stages. Reference numeral 21 is a cable of the water flow generating machine 7 and is connected to a switchboard on land or the like. Also, the mooring ropes 6 and 6 are shown in this example as connecting two ropes respectively.
Each one may be used.

 Next, the operation of the above embodiment will be described.

In FIG. 1, the lengths of the mooring ropes 6 and 6 are adjusted in advance so that the variable water flow station 1 is moored to the mooring piles 8 and 8 of the land portion 7 by adjusting to the blowing depth D at the high water level H. To do. Next, by activating the water flow generating machine 4, the water bottom W of the reservoir B is sucked from the lower end of the long draft 5 and ejected from the nozzle N to perform aeration processing.

At this time, the water stored in reservoir B changes from high water level H to low water level L.
When it moves toward, the float 2 descends as the water level of the stored water decreases, and the water flow generating machine 4 integrated with the float 2 also descends. At this time, since the lower end portion of the long draft 5, that is, the lower cylindrical body 12 is restricted from descending by the mooring ropes 6 moored to the land portion 7, the upper portion of the long draft 5 is restricted. The tubular body 10 and the intermediate tubular body 11 are lowered relative to the lower tubular body 12 whose descent is restricted, and the upper tubular body 10 and the intermediate tubular body 11 are housed in the lower tubular body 12. As a result, the long draft 5 is in a contracted state. The middle portion of each mooring rope 6 is slidably held by the rope holder 3,
As the float 2 descends, the middle portion of each mooring rope 6 slides with respect to the rope holder 3, and the vicinity of the end of each mooring rope 6 attached to the lower tubular body 12 follows the long draft 5. Hold the vertical state. As a result, the lower tubular body 12 is held in the vertical state by the respective mooring ropes 6, and the upper tubular body 10 and the intermediate tubular body 11 are securely fitted into the vertically held lower tubular body 12. .

As described above, since the mooring ropes 6 restrict the lowering of the lower cylindrical body 12 of the long draft 5, the long draft 5 is reliably contracted. As a result, the suction depth D indicated by the distance from the bottom surface of the reservoir to the lower end of the lower tubular body 12 does not change even if the water level changes. Moreover, while the long draft 5 is contracted, the aeration process of the pond bottom water mass W by the water flow generating machine 4 is continuously performed in a normal fountain posture.

On the other hand, when the stored water in the reservoir B fluctuates from a low water level to a high water level, the rope holders 3 and 3 operate in the opposite manner to raise the float 2 and the water flow generating machine 4, The aeration process of the pond bottom water mass W is continuously performed in a normal fountain posture while the draft 5 extends.

(Effect of the Invention) In the water level variable flow station of the present invention, the end of the mooring rope is attached to the lower end of the long draft attached to the water flow generating machine, and the portion near the end of this mooring rope is Since the rope retainer attached to the float holds it vertically, the mooring rope can reliably expand and contract the long draft as the float moves up and down as the water surface moves up and down. it can.
As a result, even in a reservoir such as a dam where the water level fluctuates extremely, not only can the aeration process be performed even on the water mass at the bottom of the pond, but also the fountain posture of the water flow generating machine can be maintained in a normal state.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a front view of a water level fluctuation type flow station provided in a reservoir, and FIG. 2 is a plan view thereof. 1 ... Water level type flow station 2 ... Float, 3 ... Rope holder 4 ... Water flow generating machine, 5 ... Long draft 6 ... Mooring rope, 7 ... Land section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Nakayama 3-243 Shirute, Tsurumi-ku, Yokohama-shi, Kanagawa Shinmeiwa Kogyo Co., Ltd. (56) References JP-A-49-57658 ) Actual development Sho 55-137994 (JP, U) Actual development Sho 53-91365 (JP, U)

Claims (1)

(57) [Claims] 1. A float floating above the water surface, a water flow generating machine integrally attached to the float with the suction side facing downward, and a float extending downward to the suction side of the water flow generating machine. A draft pipe that is connected and expandable in the vertical direction, and one end of the draft pipe is attached to the lower end of the draft pipe, and the other end is mooring rope moored to the land. A rope holder that is attached to the float so as to slidably hold the intermediate portion of the rope and that holds the vicinity of the end of the mooring rope attached to the lower end of the draft pipe in a vertical state along the draft pipe, A water level fluctuation type flow station comprising: