JPH0628212Y2 - Water tracking fountain - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a water level tracking type fountain device capable of following a water level fluctuation by a fountain nozzle arranged near a water surface such as a sea surface or a lake surface.

[Conventional technology]

As a conventional water level follow-up fountain device, there is a fountain nozzle equipped on a float or a ship that floats on the water surface. In such a water level follow-up fountain device, the float is moored by a mooring mechanism composed of a combination of a chain and an anchor, or the quay and the float are connected by a mooring rod via a universal joint, thereby forming a fountain nozzle. It prevented the drainage and tilting of large amplitude. Further, as disclosed in Japanese Examined Patent Publication No. 58-45902, by providing a float or a pontoon with an attitude control function, the tilt of the float or the pontoon due to waves and the like, and the fountain nozzle are minimized, In some cases, the shape of the fountain ejected from the fountain nozzle was less affected by waves.

[Problems to be solved by the device]

The above-mentioned conventional water level follow-up fountain device is equipped with a fountain nozzle on a float or a pontoon which is inherently susceptible to waves, and the mooring mechanism also completely prevents the fountain nozzle from tilting due to waves. It did not have a possible function. However, the effect of waves does not appear significantly on the shape of the fountain in a small-scale device where the height of the fountain ejected from the fountain nozzle is not so high,
Even if the fountain nozzle tilted slightly due to the influence of the waves, it was possible to form a fountain with a certain shape.

However, in a large-scale device that sprays fountains up to a height of 150 m, for example, if the float or pontoon tilts slightly together with the fountain nozzles due to the effects of waves, the top of the fountains ejected from the fountain nozzles will be greatly misaligned. The fountain's normal form cannot be maintained. For example, in a large-scale device where the height of the fountain reaches 150 m, if the fountain nozzle is tilted 3 degrees from the normal posture, calculation (150 x tan3
At °), misalignment of 8 m occurs at the top of the fountain.

In addition, the reaction force (fountain reaction force) applied to the float or pontoon when the fountain is spouted is F = rQv / g, where r: specific volume of water Q: flow rate of fountain v: flow velocity in fountain nozzle g: gravity For large-scale fountains that reach a height of 150 m, the reaction force of the fountain can reach 4500 kg. Even if it was, the float or the barge vibrated and the attitude was not controlled sufficiently.

As is clear from the above, the conventional water level follow-up fountain device is suitable for a small-scale device, but is not suitable for a large-scale device.

The present invention has been made in view of the above problems. Even though the fountain nozzle can follow the fluctuation of the water level, the fountain nozzle does not tilt or vibrate due to the influence of waves or fountain reaction force. It is an object of the present invention to provide a water level follow-up fountain device that can achieve the following.

[Means for Solving the Problems]

In the water level tracking type fountain device of the present invention, a carriage equipped with a fountain nozzle is movably arranged on an inclined rail laid on an inclined surface between a shore and a water bottom.

[Action]

In the water level tracking type fountain device having this configuration, by moving the bogie along the inclined rail, the fountain nozzle mounted on the bogie can follow the water level fluctuation. Further, tilting of the fountain nozzle due to the influence of waves and the reaction force of the fountain is reliably suppressed by the inclined rail.

〔Example〕

FIG. 1 is a schematic side view of a water level follow-up fountain device according to an embodiment of the present invention, and FIG. 2 is a plan view thereof. Reference numeral 1 denotes an inclined rail, most of which is on an inclined surface 4 between a shore and a water bottom. Is laid under the water. The sloping surface 4 may be artificially formed on the coast or lake shore, or may be a natural use of the coast or lake shore. 2 is a dolly,
Equipped with fountain nozzle 3 and rotatable wheel 5
It is movably arranged on the inclined rail 1 via. It is desirable that the dolly 2 does not separate from the inclined rail 1 even when subjected to an external force due to waves or the like. The wheels 5 may be arranged inside the C-shaped steel. A tow wheel 6 is provided at the front end of the trolley 2, and a rope 7 such as a wire cable or a chain fixed to the tow wheel 6 is guided to the land along the inclined surface 4 and is installed on the land. Are connected to a drive mechanism 8 such as. The drive mechanism 8 is for moving the carriage 2 along the inclined rail 1, and it is of course possible to adopt a mechanism other than a winch. Also,
The trolley 2 is provided with a pressure water inlet 9 of the fountain nozzle 3 toward the rear (direction in which the trolley 2 moves backward and descends),
Fixed pipe 1 connected to water supply equipment 10 such as a water supply pump
1 is installed on land. And the pressure water inlet 9
And the pressure water outlet 12 of the fixed pipe 11 are connected by a sufficiently long pipe 13 having flexibility. As shown in FIG. 2, the flexible pipe 13 has an intermediate portion bent in an arc shape, and a plurality of positions in the middle thereof are supported by a movable base 14 with casters. The movable base 14 with casters moves in an arbitrary direction following the shape change of the pipe 13 on the inclined surface 4 or the water bottom.

As shown in FIG. 2, when the pressure water inlet 9 of the fountain nozzle 3 and the pressure water outlet 12 of the fixed pipe 11 are both directed in the same direction, the pipe 13 is bent as a whole in a U shape in plan view, and the inclined rail 1 If the space between the fixed pipe 11 and the fixed pipe 11 is set to be wider than the minimum bending radius of the pipe 13, the pipe 13 is reasonably deformed when the carriage 2 moves back and forth along the inclined rail 1. That is, when high-pressure water is sent from the water supply equipment 10 through the fixed pipe 11 and the pipe 13 to the fountain nozzle 3, even if the diameter of the pipe 13 is increased and the amount of water supplied is increased, the carriage 2
The pipe 13 is reasonably deformed with the movement of. Further, even if the traveling distance of the carriage 2 is long, if the pipe 13 is bent in a U shape in plan view, the radius of curvature of the curved portion 13a in the middle portion of the pipe 13 does not change regardless of the position of the carriage 2,
It is advantageous that the entire length of the moving distance can be covered without any trouble. In some cases, the pressure water inlet 9 of the fountain nozzle may be directed on the side surface of the carriage 2 in a direction orthogonal to the moving direction thereof, but in this case, the pipe 13 is viewed in plan view U.
It may be bent into a letter shape or an arc shape.

In the above, the fixed pipe 11 and the pipe 13 by the water supply facility 10 using the sea, lake, pond or artificial reservoir as a water source.
When high-pressure water is sent through the water, the water is jetted from the fountain nozzle 3 to a height corresponding to the water pressure at that time. Further, when the rope 7 is pulled by the drive mechanism 8, the carriage 2 moves forward along the inclined rail 1 and rises in proportion to the forward distance, and conversely, when the drive mechanism 8 is released and the rope 7 is loosened, the carriage 2 is moved. Moves backward along the inclined rail 1 due to its own weight and descends as much as the backward distance. Therefore, when the water level of the water surface W changes, it is possible to follow the water level change and raise or lower the fountain nozzle 3 together with the carriage 2.
The water level fluctuation of the water surface W is caused by the ebb and flow of the tide on the sea surface and the difference between the flood season and the dry season on the lake surface. Also, in the case of ponds, water level fluctuations occur. It should be noted that FIG. 1 shows a case where the carriage 2 and the fountain nozzle 3 are lowered by a chain line.

Since the trolley 2 is arranged on the inclined rail 1,
Even if the carriage 2 or the fountain nozzle 3 receives a wave, or the fountain reaction force is applied to the carriage 2, the fountain nozzle 3 does not tilt, and even if it tilts, it only tilts at a very small angle. Not only when the height of the fountain is low, but also when the height of the fountain is high, the top of the fountain does not cause a large misalignment, and the fountain always has a normal shape.

Further, according to this embodiment, since the flexible pipe 13 is supported by the movable base 14 with casters, when the carriage 2 moves, the pipe 13 gets caught on the inclined surface 4 or the water bottom. Therefore, there is an advantage that the pipe 13 is surely deformed following the movement of the carriage 2.

In the embodiment described above, the water supply equipment 10 and the fixed pipe 11 are installed on land, but if an underwater pump is attached to the trolley 2 and the discharge port of the underwater pump is connected to the pressure water inlet of the fountain nozzle. The water supply equipment 10 and the fixed pipe 11 can be omitted.

[Effect of device]

As described above, since the fountain device of the present invention has the fountain nozzle mounted on the bogie, it is less likely to be affected by waves as compared with the conventional one equipped on the float or the ship. Moreover, since the carriage is arranged on the inclined rail, the tilting of the fountain nozzle and the vibration of the carriage due to the influence of the waves and the reaction force of the fountain are reliably suppressed. Therefore, of course, the fountain can be jetted up to a very high level in a small-scale apparatus, and can be suitably used in a large-scale apparatus having a large fountain reaction force.

[Brief description of drawings]

FIG. 1 is a schematic side view of a water level follow-up fountain device according to an embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a vertical sectional front view illustrating an inclined rail and wheels of a truck. 1 ... inclined rail, 2 ... truck, 3 ... fountain nozzle, 4
…… Inclined surface.

Claims (1)

[Scope of utility model registration request] 1. A water level follow-up fountain device in which a carriage equipped with a fountain nozzle is movably arranged on an inclined rail laid on an inclined surface between a shore and a water bottom.