JPH0618875Y2 - Floating material removal ship - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a ship for removing suspended matters such as jellyfish and seaweed, and in particular, the jellyfish etc. are taken in near the intake of a thermal power plant. The present invention relates to a floating matter elimination ship suitable for use in prevention.

[Conventional technology]

Generally, in various plants such as thermal power plants and nuclear power plants, as shown in FIG. 7 (plan view) and FIG. 8 (side view), a larger amount (5
Up to 200,000 tons / hour) is used for cooling seawater, and the jellyfish invasion prevention net 02 and the rotating screen 03 that are stretched around the water intake port 01 in the past have made the jellyfish group water intake port 01.
To prevent entry through.

Further, when a large amount of jellyfish is generated, in order to prevent the net 02 from being clogged and hindering the water intake, the ship 04 is arranged near the water intake 01, and a pair of left and right at the stern of the ship 04 is arranged. While operating the turning propulsion device 05, the jellyfish group is prevented from approaching the net 02 by the water flow generated by one propulsion device 05.

[Problems to be solved by the present invention]

The above-mentioned normal floating body removing means using the ship 04 has the following problems because the jellyfish group is removed by using the water flow generated from the propulsion device 05 itself of the ship 04.

That is, in the conventional means for removing by a ship, a propeller having a diameter of 2 m is driven by an engine of about 1500 ps and the water flow by the propeller is used to wind up the sludge on the seabed, deteriorating the surrounding environment. There is a point.
From the results of conventional water tank tests, it has been found that the propeller diameter needs to be large to some extent, but the required horsepower is about 100 ps to provide an elimination effect.

Therefore, it is conceivable that the propeller of a ship equipped with a propeller having a diameter of about 2 m is decelerated to operate at about 100 to 200 ps, but this has the following problems. That is, a ship equipped with a propeller with a diameter of about 2 m is generally equipped with a main engine of 1500 ps or more.
A special speed reducer is required to operate at about 200 ps, and charter vessels are limited. Further, a ship equipped with a propeller having a diameter of about 2 m has a problem that the hull is large and a small turn cannot be made. Furthermore, during the work of removing the jellyfish group by the above-mentioned ship, the hull needs to be held at a fixed position, but since the propeller of the ship itself is used as the excluded water flow generator, the propeller is fixed in a fixed direction. It has to be aimed at, and it is difficult to maintain the position of the hull with respect to the wind and the external force of the tidal current that change from moment to moment.

Further, since the propeller of a ship generally cannot change the submersion depth, it may wind up sludge in a shallow depth.

The present invention is intended to solve the above problems,
By providing a dedicated water flow generating means for eliminating suspended matters such as jellyfish on the hull separately from the propulsion device of the ship,
It is an object of the present invention to provide a floating matter elimination ship capable of efficiently eliminating jellyfish or the like from the vicinity of the intake with a small hull.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the floating object elimination ship of the present invention is
In a vessel having a steering and propulsion device at the stern, a guide member protruding outward from the bow portion, a frame that can be moved up and down along a guide groove of the guide member, and an elevator drive mechanism for the frame are provided. The above-mentioned frame is characterized by being equipped with a water flow generation means capable of generating a water flow toward the front and removing suspended matters.

Further, as the water flow generating means, it is possible to use a means constituted by a large number of rotary drive mechanisms arranged in a row on the frame and a large number of impellers that are rotationally driven by these rotary drive mechanisms.

Further, the water flow generating means may be composed of a water supply member attached to the frame and a large number of water jet nozzles dispersedly arranged so as to be connected to the water supply member.

[Action]

In the above-mentioned suspended solids removal boat of the present invention, when a jellyfish group etc. is found in the sea area near the intake of a thermal power plant, etc., in order to prevent the inflow to the intake, use the ship to eliminate the jellyfish group etc. When performing the above, first, the impeller of the water flow generating means or the water jet nozzle is lowered into the water along with the frame along the guide member in the bow portion. Then, in order to appropriately remove the jellyfish group and the like by the water flow generated forward with the operation of the impeller or the water jet nozzle, the steering operation at the stern of the ship and the control of the propulsion device are carried out.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.
1 to 3 show a floating material removing ship as a first embodiment of the present invention. FIG. 1 is a side view thereof, and FIG. 2 is a drawing of FIG.
II-II arrow view, FIG. 3 is a partial side view showing a storage state of the impeller and the like, and FIGS. 4 to 6 show a suspended solids removing ship as a second embodiment of the present invention. Figure is the plan view,
FIG. 5 is a side view thereof, and FIG. 6 is a front view of the water flow generating means.

First, the first embodiment of the present invention will be described. As shown in FIG. 1, in the stern of the hull 1, a turning propulsion device 2 capable of turning around a vertical axis to perform steering is provided.
It is provided in pairs on the left and right.

Then, via the support arm 3 to the bow of the hull 1,
A guide member 4 having a guide groove in the up and down direction is provided so as to project outward, and a frame 5 that can be moved up and down along the guide groove of the guide member 4 is provided. This is performed by the chain block 6 as a mechanism.

Further, a large number of impellers 7 capable of generating a water flow toward the front are mounted on the frame 5 together with a submersible motor 8 as a rotation drive mechanism for supplying electric power to the motor 8 for power generation onboard the ship. It is designed to be performed from the machine 13 via a wiring (not shown). When the chain block 6 is of the electric type, its power supply is also controlled by the generator 1.
It starts from 3.

Since this floating material removal ship is configured as described above,
When a jellyfish group, etc. is found during patrol in the water area near the intake of a thermal power plant, etc., in order to prevent the inflow to the intake, when removing the jellyfish group etc. using this ship, do the following: Operations are performed.

First, the operation of the chain block 6 at the bow portion lowers the frame 5 along the guide member 4, whereby the impeller 7 is submerged. Then, the submersible motor 8 is operated to perform an operation of removing the jellyfish group or the like by the water flow generated from the impeller 7 toward the front.

At that time, since the ship is provided with the swivel-type propulsion device 2 separately from the impeller 7, the propulsion device 2 controls the impeller 7 toward the jellyfish group while the hull 1 is almost By keeping it in a fixed position, maneuvering to properly eliminate the jellyfish group is greatly simplified.

In this embodiment, since the turning type propulsion devices 2 are provided so as to form a pair at the stern on the left and right sides, the above-mentioned marine vessel maneuvering becomes easier.

Further, since the frame 5 supporting the impeller 7 is driven up and down along the guide groove of the guide member 4, the frame 5 does not move.
Is held more firmly than when it is suspended by a crane or the like via a wire. Therefore, there is an advantage that the jellyfish group and the like are removed by the impeller 7 efficiently and surely.

Further, when the water depth of the seabed is shallow, it is possible to prevent the sludge from rising up on the seabed by appropriately adjusting the descending amount of the frame 5 and operating only the impeller 7 at the lower end.

In this way, after the work of removing the jellyfish group is completed, as shown in FIG. 3, the frame 5 is raised above the water surface and stored, whereby the water resistance of the hull 1 during navigation is increased. Can be reduced.

In order to secure the field of view from the bridge 1a, it is possible to adopt a structure in which the guide member 4 can be laid down along the upper deck of the hull when the frame 5 is stored above the water surface.

Next, in the second embodiment of the present invention shown in FIGS. 4 to 6, as the above-mentioned water flow generating means, a water supply member 9 having a grid-like pipe attached to the frame 5 is connected to the water supply member 9. A large number of water jet nozzles 10 dispersedly arranged as described above are provided, but other configurations are almost the same as those in the above-described first embodiment.

The elevating and lowering of the frame 5 is performed by winding and unwinding a wire 6b, one end of which is locked to the lower end of the water supply member 9, by an electric winch 6a provided at the upper end of the frame 5, and the winch 6a is controlled. Is performed remotely on the bridge via a control line (not shown).

An inboard water pump 11 is connected to a pipe (not shown) for the water supply member 9.

With the above-described configuration, also in the case of the second embodiment, when a jellyfish group or the like is found in the sea area near the intake of a thermal power plant, etc., to the intake, as in the case of the first embodiment described above. In order to prevent the influx of jellyfish, jellyfish etc. are eliminated using this ship.

That is, first, the water supply member 9 is lowered along with the frame 5 along the guide member 4 in the bow portion, so that each water jet nozzle 10 is submerged. Then,
Water pump 1 using a manual valve or solenoid valve (not shown)
By sending water from 1, a water flow is generated in the forward direction, and an operation of eliminating the jellyfish group or the like is performed.

Also in the case of the second embodiment as well, since the ship is provided with the propulsion device 2a and the rudder 12 as steering steering devices in the stern separately from the water jet nozzle 10, the water jet nozzle is controlled by these controls. While manipulating 10 toward the jellyfish group and keeping the hull 1 in a substantially fixed position, the maneuvering is carried out to properly remove the jellyfish group.

If the nozzle is supported so that it can swing, the jellyfish or the like can be transferred more efficiently.

In this way, after the work of removing the jellyfish group or the like is completed, the frame 5 and the water supply member 9 are raised above the water surface and stored, and this reduces the water resistance during navigation of the hull 1. Get rid of.

[Effect of device]

As described in detail above, according to the floating material elimination ship of the present invention, the following effects and advantages can be obtained.

(1) Separately from the stern rudder propulsion device, the frame along the guide member projecting outward from the bow is equipped with a water flow generation means for exclusive use of floating matter removal. By controlling the water flow from the water flow generation means, the hull is maintained in a substantially fixed position while directing the water flow toward the floating material, and the operation of the ship to properly remove the floating material is greatly simplified. Become so.

(2) Since the frame that supports the water flow generating means is moved up and down along the guide groove of the guide member, the frame should be held more firmly than when it is suspended by wires such as a crane. Therefore, the removal of the suspended matter by the water flow generating means can be performed efficiently and surely.

(3) When the water depth of the seabed is shallow, it is possible to prevent the sludge from rolling up on the seabed by appropriately adjusting the descending amount of the frame and operating only the lower part of the water flow generating means. it can.

(4) After the work of removing suspended solids is completed, the frame is raised above the surface of the water and stored therein, whereby the water resistance during navigation of the hull can be reduced.

(5) Since an impeller or a water jet nozzle is attached to the frame as a water flow generating means, the number of the impeller and the horsepower of the rotary drive mechanism of the impeller, or the number of the water jet nozzle and the amount of jetted water are appropriately set. Therefore, even a small hull can efficiently remove suspended matter.

[Brief description of drawings]

1 to 3 show a floating material removing ship as a first embodiment of the present invention. FIG. 1 is a side view thereof, and FIG. 2 is a drawing of FIG.
II-II arrow view, FIG. 3 is a partial side view showing a storage state of the impeller and the like, and FIGS. 4 to 6 show a suspended matter elimination ship as a second embodiment of the present invention. Figure is the plan view,
FIG. 5 is a side view thereof, FIG. 6 is a front view of the water flow generating means thereof, FIGS. 7 and 8 show a conventional suspended matter removing means, and FIG. 7 is a plan view thereof. Is a side view thereof. 1 ... Hull, 1a ... Bridge, 2 ... Turning propulsion device,
2a ... Propulsor, 3 ... Support arm, 4 ... Guide member,
5 ... Frame, 6 ... Chain block as an elevating / lowering drive mechanism for the frame, 6a ... Electric winch, 6b ... Wire, 7 ... Impeller, 8 ... Underwater motor as rotation driving mechanism for impeller, 9 ... Water supply member, 10 ... Water jet nozzle, 11 ... Water pump, 12 ... Rudder, 13 ...
Generator for power supply.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiko Igarashi 1-3-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Within Tokyo Electric Power Co., Inc. (72) Masaru Tazawa 1-1-1 Satinoura-cho, Nagasaki-shi, Nagasaki Mitsubishi Heavy Industries Nagasaki Research Institute Co., Ltd. (72) Inventor Koji Uenomon 1-1, Atsunoura-machi, Nagasaki, Nagasaki Prefecture Mitsubishi Heavy Industries, Ltd. Nagasaki Shipyard (72) Inventor Kazuo Masuda 1-1, Atsunoura-machi, Nagasaki, Nagasaki Prefecture No. Mitsubishi Heavy Industries Ltd. Nagasaki Shipyard (72) Inventor Hitoshi Kumamoto 2-5-1, Marunouchi, Chiyoda-ku, Tokyo Sanryo Heavy Industries Ltd. (72) Inventor Shinichi Ito 2-5-1 Marunouchi, Chiyoda-ku, Tokyo San Sanryo Heavy Industries Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A ship having a steering and propulsion device at the stern, and a guide member projecting outward from a bow portion,
A frame that can be raised and lowered along the guide groove of the guide member,
A floating object elimination ship, comprising a lifting drive mechanism of the same frame, wherein said frame is equipped with a water flow generating means capable of generating a water flow toward the front and removing floating objects. 2. A floating substance elimination ship in which the water flow generating means is composed of a large number of rotary drive mechanisms arranged in a row on the frame and a large number of impellers that are rotationally driven by these rotary drive mechanisms, respectively. . 3. A floating substance elimination ship, wherein the water flow generating means is composed of a water supply member attached to the frame and a large number of water jet nozzles dispersedly arranged so as to be connected to the water supply member. .