JP2003129454A - Floating gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floating gate capable of being used even between both ends of a large-diameter place and even in an installation condition in which a stream of water exists. SOLUTION: This floating gate 10 is composed of: gate supporting parts 12 which face each other in a state of sandwiching a water way 11 in between; and a floating body 13 which is made movable by floating up between the supporting parts 12 and made fixable by undergoing water injection, so as to open/close the water way 11. A floating body supporting base 15 for placing and supporting the floating body 13 is provided on a bottom of the water way 11 between the supporting parts 12; and the floating body 13 is provided with a pump 18 which serves as a thruster by jetting the water during floating movement and fulfills a function of discharging the water on the side of navigable waters at fixation. Thus, the pump 18, which is installed in the floating body 13, is made to serve as the thruster by jetting the water during the floating movement, so that the floating body 13 can be towed to a section between the prescribed supporting parts 12 even if the stream of the water exists; and when the floating body 13 is fixed to the supporting base 15 by the water injection, the water on the side of the navigable waters is discharged, so that the floating gate 10 can be made to serve as a drainage pump station and can be installed in the large- diameter place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating gate, which can be used as a tide embankment while opening and closing a large passage such as a passage with a width of about 500 m to secure the passage of a ship. is there.

[0002]

2. Description of the Related Art Conventionally, a tide gate has been installed at the mouth of a river or canal to prevent storm surges. When storm surges are expected, the gates can be closed and drained according to rising water levels inside the gates. A drainage station is installed adjacent to the tide gate to allow the water to be drained by a pump.

In order to prevent such a high tide, if a tide gate is installed for each river or canal and a drainage pump station is installed, each operation and maintenance is required.
It is considered that these are integrated to provide a tide gate with a large diameter of, for example, about 500 m.

On the other hand, a lifting type shell gate has been often used as a tide gate for a large span, but the maximum span is about 60 m, and a lifting type truss gate is used as an example. Although there are few, there are some with a maximum span of 90 m.

Further, as a gate having a large span, a vertical hinge type sector gate is used, and there is the Maesland movable weir in the Netherlands having the largest span in the world of 360 m.

[0006]

However, in the lifting type gate, the bending moment increases in proportion to the square of the span and the bending amount increases in proportion to the cube of the span. If the distance is 100 m or more, it is difficult to realize.

On the other hand, a vertical hinge type sector gate has a large span, but a huge supporting structure is required behind it, and it is currently necessary to construct a large span with a span of about 500 m. It's almost impossible, and even if it can be built, it costs a huge amount of money.

Therefore, it is considered to use a floating type flap gate, and the span is 4 in Italy.
20m is planned (Moses plan), 20m
Since the gates each having a unit length are arranged and operated independently, it is possible in principle to eliminate the regulation of the maximum span by increasing the number of installed gates.

However, in this floating type flap gate, the rotating portion is always under water, which causes a problem in maintenance and inspection.

On the other hand, there is a floating gate as a part of the gate used for the deadline of the shipbuilding dock, and the gate of the floating structure is towed by a tugboat. No special opening / closing device is required, the structure is simple, and the gate is supported not only at both ends but also at the bottom, so the bending frequency does not increase locally unlike the lifting type, so the opening and closing frequency is high. There is a high possibility that it can be applied as a tide gate with a large diameter.

However, it is usually mentioned that there is no water flow as the installation condition of the floating gate, and if there is a water flow, it will be difficult to tow and submerge at a predetermined position.

At river mouths and waterways where tide gates are installed,
Due to river flow from upstream, tidal phenomena such as astronomical phenomena, rainfall, and wind blowing, almost all of the water flow occurs, and during high tides, the water flow further increases.

Therefore, it is essential that the tide gate can be opened and closed in a stream of water, and it is extremely difficult to use an ordinary floating gate that is opened and closed in still water as the tide gate.

The present invention has been made in view of the above problems of the prior art, and it is an object of the present invention to provide a floating gate which can be used even under a certain installation condition of water flow or a large diameter.

[0015]

[Means for Solving the Problems] In order to solve the above problems, as a result of intensive research on floating gates installed in a large diameter with a water flow, it was found that both ends should be securely installed in the water flow. In addition to the support at the gate, it is effective to support at the bottom, and when installing a gate, install a drainage pump station with a drainage pump to the side of the gate to suppress the rise of the internal water level. However, it is effective to install this in the gate and make the pump function as a thruster during towing, and it was discovered that it can be towed to a predetermined position even if there is a water flow. Is.

The floating gate according to the first aspect of the present invention opens and closes a water channel by being opposed to a gate support portion that is sandwiched in the water channel, and can be floated and moved between these gate support portions and can be fixed by pouring water. And a floating body supporting base for mounting and supporting the floating body on the bottom of a water channel between the gate support portions where the floating body is fixed by water injection.

According to this floating gate, it is composed of a gate support part which faces the water channel, and a floating body which floats between the gate support parts so as to be movable and can be fixed by pouring water to open and close the water channel. The floating gate is a floating gate between the gate support portions where water is fixed to the floating body, and a floating body support stand for mounting and supporting the floating body is provided. By supporting the bottom part of the with a floating support, it becomes possible to securely close even in a water stream.

Further, in the floating gate according to the second aspect of the present invention, the gate support portions sandwiching the water channel and facing each other, and floating between the gate support portions can be moved and can be fixed by pouring water. A floating gate that opens and closes a floating body, and a floating body support stand that mounts and supports the floating body is provided on the bottom of the water channel between the gate support portions where the floating body is fixed by water injection. It is characterized by being provided with a pump that sometimes sprays water to function as a thruster and, when fixed, has a function to drain water in the inner waterway side.

According to this floating gate, the pump installed in the floating body jets water during the floating movement to function as a thruster, so that even if there is a water flow, it can be towed between predetermined gate support parts. When the water is fixed to the floating body support, it can be made to function as a drainage station by draining the water on the inner waterway side, and can be installed in a place with a large span.

According to a third aspect of the present invention, in addition to the structure according to the first or second aspect, the floating gate is fixed between the floating body support and the bottom portion of the floating body. It is characterized in that an uneven portion is provided for holding and transmitting and supporting water pressure applied to the floating body.

According to this floating gate, the floating support and the bottom of the floating body are fitted to each other to maintain a fixed state, and an uneven portion for transmitting and supporting water pressure applied to the floating body is provided. Therefore, it is possible to reliably support the water pressure applied to the floating body via the uneven portion, and it is possible to realize a gate having a large diameter.

Further, the floating gate according to a fourth aspect of the present invention is, in addition to the structure according to any one of the first to third aspects, a guide for guiding the floating movement of the floating body adjacent to the gate supporting portion. A dolphin for use is provided.

According to this floating gate, the guide dolphin for guiding the floating movement of the floating body is provided adjacent to the gate support portion, so that it is possible to more reliably tow to a predetermined position. .

According to a fifth aspect of the present invention, in addition to the structure according to any of the first to fourth aspects, the floating gate drives the thruster and the drainage pump with an electric motor and A power generator for supplying electric power is installed on the floating body.

According to this floating gate, the thruster and the drainage pump are driven by the electric motor, and the power generator for supplying electric power to the electric motor is installed on the floating body. By driving the pump by the electric motor. The operability of the thruster can be improved, and the electric power can be easily supplied during towing by supplying the electric power from the power generator inside the floating body.

Further, in addition to the structure according to claim 5, the floating gate according to claim 6 of the present invention is configured to be able to sell electric power from the power generator of the floating body moored with the water channel opened. It is characterized by having done.

According to this floating gate, the electric power generated by the power generator of the floating body moored with the water channel open can be sold, and the storm surge occurs at most once in a few years. Although most of the time is in the moored state, operating the power generator to sell the power can help the cost required for the maintenance of the gate itself.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 3 relate to an embodiment of a floating gate of the present invention,
1 is a schematic configuration diagram, FIG. 2 is a partial plan view and a cross-sectional view,
FIG. 3 is a cross-sectional view and a plan view.

The floating gate 10 is used as a tide gate for opening and closing a water channel (passage) having a span of about 500 m, for example, and a gate support portion 12 is provided at each of the opposite ends of the water channel 11 so as to face each other. In addition, a gate (floating body) 13 having a floating body structure is provided to open and close between the gate support portions 12.

These gate supports 12 are of concrete construction or the like and are arranged at the ends of the seawall 14.

A concrete structure floating body support base 15 is constructed at the bottom of the water channel 11 outside the water channel 11 formed by the gate support portions 12, and the gate 13 is towed between the gate support portions 12 and then water is injected. It can be sunk and placed.

In order to support the water pressure applied to the gate 13, the floating body support base 15 is formed with a recess 15a on its upper surface so that the upper edge extends outward, and the gate corresponding to this recess 15a. A convex portion 13 a is formed on the bottom surface of 13 and the floating body support portion 15 supports the water pressure applied to the gate 13 by fitting them together.

Further, the gate supports 1 at both ends of the water channel 11
The guide dolphins 16 serving as guides when the gate 13 is towed and installed are installed at an interval corresponding to the width of the gate 13 on the floating support base 2 and the floating support 15, and a fender such as a rubber fender is provided at the opposing tips. The material 16a is attached.

Further, a mooring dolphin 17 is provided outside the tide embankment 14 on the extension line of the floating body support 15 for the gate 13.
The fenders 17a made of rubber or the like are attached to the opposite ends at intervals corresponding to the width of the gates, and two sets are provided so as to support both ends of the gate 13.

The mooring dolphin 17 is guided by the guiding dolphin 16 and towed, and the waterway 1
A large number of pumps 18 having a thruster function and a drainage pump function are mounted on the gate 13 supported by the gate support portions 12 and the floating body support bases 15 at both ends so as to close 1 and, for example, an axial flow pump. Composed of the gate 1
3 is provided between intake / exhaust pipes 19 that open to the side wall of the gate 13 across the gate 3, and the opening / closing valves (A, B) are provided at the ends of the exhaust pipes 19.
20 is provided, a branch pipe 21 is connected to the intake / exhaust pipe 19, opens in the gate 13, and can be opened / closed by an open / close valve (C) 22.

The pump 18 is driven by an electric motor so that it can be easily rotated in the reverse direction so that suction and discharge can be easily performed from any opening of the suction pipe 19. Electric power can be supplied by a power generator installed on the gate 13, for example, a diesel power generator.

The forward / reverse rotations and the number of revolutions of the electric motor for driving each pump 18, the on-off valves (A, B) 20 and the on-off valve (C) 2
A control device is provided for controlling the opening / closing of the pump 2 and for controlling the flow velocity of the jet water when each pump 18 functions as a thrust, and for controlling based on various sensors and detection signals from the sensors.

Further, since this gate 13 is normally moored to the mooring dolphin 17 while being floated beside the waterway 11, the electric power generated by operating the power generator is effectively used in order to effectively use the onboard equipment. Necessary equipment is mounted so that power can be sold, and a mooring dolphin 17 is provided with a power transmission device to the land side.

Further, the gate 13 is subjected to heavy anticorrosion coating and electrocorrosion so that it can be moored for a long time.
Corrosion is prevented.

The operation of the floating gate 10 thus constructed will be described with reference to the explanatory views shown in FIGS.

In the rest state in which the water channel 11 is opened, FIG.
As shown in (1) and FIG. 3, all the water in the gate 13 is drained and floated, and is moored to a mooring dolphin 17 beside the waterway 11, and each opening / closing valve (20) of the pump 18 is moored. , 22) A, B and C are all closed.

In the case where a storm surge is expected from such a rest / mooring state and the water channel 11 needs to be closed, as shown in FIG.
As shown in (2) and FIGS. 6 (a) and 6 (b), the tugboats 23 for towing and braking are connected in front of and behind the gate 13 and towed, and the waterway 11 is guided along the guide dolphin 16. Try to close it.

At this time, if there is a water flow, it becomes difficult for the gate 13 to flow from the outside of the water channel 11 with a high water level toward the inside of the water channel with a low water level, and it is difficult to tow to a predetermined position. On the contrary to the case of drainage of
0) A and B are opened, and the pump 18 is rotated in reverse and jetted from the on-off valve B, so that the pump 18 functions as a thruster and is controlled so as not to be flown by the water flow and towed.

In this way, when the towed vessel is towed to a predetermined position so as to block the water channel 11, water is poured into the gate 13 to be submerged. Therefore, as shown in FIGS. 4 (3) and 7 (a), (b), 18 stops, the on-off valve (20) A and the on-off valve (22) C are opened, the on-off valve (20) B is closed, and water is injected into the gate 13. Then, the gate 13 loses its buoyancy and sinks, and the convex portion 13a at the bottom of the gate 13 and the concave portion 15a of the floating body support 15 are mounted so as to fit each other.

By doing so, it is possible to prevent the water channel 11 from being blocked by the gate 13 and the influence of the high tide from reaching the inside of the seawall 14.

On the other hand, when the water channel 11 is closed by the gate 13, the inner water level may rise. In this case, the pump 18 mounted on the gate 13 is caused to function as drainage, As shown in FIG. 4 (4), the on-off valves (20) A and B are opened, the on-off valves (22) C are closed to operate the pump 18, and the water inside closed by the gate 13 is moved to the outside of the gate 13. Drain water to prevent rising water level.

When the inside water level closed by the gate 13 rises rapidly, the inside space of the gate 13 is also filled with water so as to mitigate the rise of the water level or outside the gate 13. Water may be poured into the inner space of the gate 13 in order to relieve the water pressure due to the high tide.

Although the tide is prevented by closing the gate 13 as described above, the tide does not last for 12 hours or more. Therefore, by closing the waterway 11, for example, the navigation of the ship cannot be stopped for several days. Instead, for a small boat or the like, a small lock or the like may be installed beside the gate support 12 to deal with the problem.

When the high tide ends and the water level outside the gate 13 drops, the on-off valve (20) A and the on-off valve (22) C are opened to open the on-off valve (2) as shown in FIG. 4 (5).
0) B is closed, and the pump 18 is operated to drain the water inside the gate 13 to the outside partitioned by the gate 13,
Leaving 3 with buoyancy until it is towable.

Next, the tugboats 23 are connected to the front and rear of the gate 13 and towed and braked while towed to the mooring place.

In the case where the gate 13 is made to flow by a water flow during this towing, the pump 18 mounted on the gate 13 functions as a thruster to obtain thrust against the water flow to obtain a predetermined mooring dolphin 17. Make it possible to tow up to that point (see Fig. 4 (6)).

Then, the mooring dolphin 17 is again moored to prepare for the next high tide, and the on-off valves (20, 22) are provided.
While A, B, and C are closed, the water remaining in the gate 13 may be completely drained by spending time with a separately provided pump.

After the mooring state is set in this way, the power generator is operated and the generated electric power is sold through the power transmission equipment (not shown) provided on the mooring dolphin 17, so that the marine power generator is operated during a normal period in which no high tide occurs. And contributes to the cost required for the maintenance of the floating gate 10.

According to such a floating gate 10, the water pressure applied to the gate 13 is applied to the gate support portions 13 at both ends, and the recess 15a of the floating body support 15 and the gate 13.
Since it is supported by fitting with the convex portion 13 at the bottom of the, the bending moment applied to the gate 13 does not locally increase, and even if it has a large span, it can be closed and endure water pressure. You can

Further, the opening / closing mechanism of the gate 13 is not required, and the tugboat 23 can be towed, and the structure can be simplified as a floating gate with a large diameter, and the manufacturing cost can be suppressed.

Further, in the floating gate 10, even if there is a water flow, the pump 18 provided in the gate 13 can function as a thruster to tow and move to a predetermined position without being affected by the water flow. At the same time, by using it for drainage, there is no need to establish a new drainage station.

A pump 18 used as a thruster
Since the motor is driven by an electric motor, forward / reverse rotation can be performed more easily than when it is directly driven by an internal combustion engine, and the control of the rotational speed and the flow velocity can be performed easily.

Further, by mounting the power generator on the gate 13, it is not necessary to supply electric power from the outside, and in particular, it is not necessary to supply a large amount of electric power during towing, so that the towing can be carried out safely. You can

[0059]

As described above in detail with the embodiment, according to the floating gate according to the first aspect of the present invention, between the gate support portions facing each other across the water channel, and between these gate support portions. A floating gate comprising a floating body that floats and can be moved and can be fixed by pouring water to open and close a water channel. Since the floating body support table for supporting the base is provided, the bottom portion of the floating body can be supported by the floating body support table in addition to the gate support portions at both ends, and the floating body support can be surely closed even in the water flow.

Further, according to the floating gate of the second aspect of the present invention, the pump installed in the floating body can inject water at the time of levitation to function as a thruster, and even if there is a water flow, a predetermined gate support is provided. In addition to being able to tow between parts, it can function as a drainage station by draining the water on the inner waterway side when water is fixed to the floating support, and can be installed in a place with a large span.

According to the third aspect of the present invention, the floating gate is fitted between the floating body support and the bottom portion of the floating body to maintain the fixed state.
Since the concavo-convex portion for transmitting and supporting the water pressure applied to the floating body is provided, the water pressure applied to the floating body can be reliably supported through the concavity and convexity, and a gate with a large diameter can be realized.

Further, according to the fourth aspect of the present invention, since the guide dolphin for guiding the floating movement of the floating body is provided adjacent to the gate supporting portion, the floating gate can be more reliably located at a predetermined position. Can be towed.

According to the floating gate of the fifth aspect of the present invention, the thruster and the drainage pump are driven by the electric motor, and the generator for supplying the electric power to the electric motor is installed on the floating body. By driving the pump with an electric motor, operability in the case of a thruster can be improved, and by supplying electric power with a power generator inside the floating body, electric power can be easily and safely supplied during towing.

Further, according to the floating gate of the sixth aspect of the present invention, since the electric power from the power generator of the floating body moored with the water channel opened can be sold, the high tide is at most once every several years. Since it occurs only about once, it is mostly moored, but by operating the power generator and selling power, it is possible to help the cost required for maintenance of the gate itself.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram according to an embodiment of a floating gate of the present invention.

FIG. 2 is a partial plan view and a cross-sectional view of an embodiment of a floating gate of the present invention.

FIG. 3 is a horizontal cross-sectional view and a plan view of a floating gate according to an embodiment of the present invention in a rest mooring state.

FIG. 4 is an explanatory diagram of a first half operation according to the embodiment of the floating gate of the present invention.

FIG. 5 is an explanatory diagram of the latter half operation according to the embodiment of the floating gate of the present invention.

FIG. 6 is a cross-sectional view and a plan view of a towed state according to an embodiment of the floating gate of the present invention.

FIG. 7 is a cross-sectional view and a plan view of an installed state according to an embodiment of the floating gate of the present invention.

[Explanation of symbols]

10 Floating gate 11 watermelon 12 Gate support 13 gates (floating body) 13a convex part 14 Seawall 15 Floating body support 15a recess 16 Guide Dolphin 17 Mooring Dolphin 18 pumps 19 Suction tube 20 Open / close valve (A, B) 21 Branch pipe 22 Open / close valve (C) 23 Tugboat

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F04D 13/08 F04D 13/08 KM R 13/16 13/16 A W 29/00 29/00 Z 29 / 52 29/52 AF term (reference) 2D019 AA00 3H022 AA01 BA01 BA03 BA07 CA48 CA50 DA07 DA12 DA20 3H034 AA01 AA20 BB01 BB08 BB12 CC03 CC05 CC07 DD01 DD20 DD27 DD28 DD30 EE05 EE12 EE14

Claims (6)

[Claims] 1. A floating gate comprising: a gate support part which faces a water channel, and a floating body which floats between the gate support parts and can be fixed by pouring water to open and close the water channel. The floating gate, wherein a floating body support stand for mounting and supporting the floating body is provided on a bottom of a water channel between the gate supporting portions where the floating body is filled with water and fixed. 2. A floating gate comprising a gate support part which faces a water channel and which opposes to each other, and a floating body which floats between these gate support parts and can be fixed by pouring water to open and close the water channel. While the floating body between the gate support sections is fixed by water injection, a floating body support base for mounting and supporting the floating body is provided, while the floating body jets water during levitation and functions as a thruster. When fixed, the floating gate is equipped with a pump that drains water from the inner waterway side. 3. Between the floating support and the bottom of the floating body,
3. The floating gate according to claim 1, further comprising an uneven portion for fitting and holding the fixed state to each other and transmitting and supporting water pressure applied to the floating body. 4. The floating gate according to claim 1, further comprising a guide dolphin provided adjacent to the gate support portion for guiding the floating movement of the floating body. 5. The thruster and the pump for drainage are driven by an electric motor, and a generator for supplying electric power to the electric motor is installed on the floating body.
4. The floating gate according to any one of 4 to 4. 6. The floating gate according to claim 5, wherein the floating body moored with the water channel open can sell the electric power generated by the power generator.