JPH078392Y2 - Underwater floating organism elimination ship - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a ship for eliminating underwater floating organisms such as jellyfish and seaweed, and in particular, the jellyfish is taken in near the intake of a thermal power plant. The present invention relates to an underwater floating organism elimination ship suitable for use in preventing water.

[Conventional technology]

Generally, in various plants such as thermal power plants and nuclear power plants, FIG. 8 (plan view) and FIG. 9 (IX in FIG. 8)
As shown in the -IX arrow cross-section), a large amount (50,000 to 200,000 tons / hour) of cooling seawater is taken from the intake 01 installed at the revetment, and conventionally, it was stretched around the intake 01. The jellyfish intrusion prevention net 02 and the rotary dust removing device 03 provided prevent the jellyfish group from entering through the water intake 01.

When a large amount of jellyfish occurs, the net 02 is blocked to prevent the hindrance of water intake.In order to prevent water from being hindered, the ship 04 such as a tugboat is moored near the water intake 01 and the stern of the ship 04 Left and right turning propulsion device
While operating 05, the water flow generated by the propulsion device 05 is used to prevent the jellyfish group from approaching the net 02.

[Problems to be solved by the device]

In the above-mentioned means for eliminating underwater floating organisms using the ordinary vessel 04, the jellyfish group is eliminated in the vicinity of the net 02 by using the water flow generated from the propulsion device 05 itself of the vessel 04. There is a problem.

That is, in the conventional means for excluding the ship 04,
Is placed near the net 02, the water flow generated by the propulsion device 05 causes a part of the jellyfish group near the net 02 to
There is a risk that it will flow in through the gap below 02.

Further, it takes a lot of time to firmly moor the ship 02 to the quay, and the rotating flow from the propulsion device 05 may wind up the seabed soil to cause pollution.

The present invention is intended to solve such problems, and before waterborne organisms such as jellyfish approach the intake.
An object of the present invention is to provide an underwater floating organism elimination ship capable of appropriately eliminating floating organisms in the water in a water area slightly away from the intake port, preventing the inflow to the intake port, and also preventing rolling up of seabed soil. And

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the underwater floating organism elimination ship of the present invention is a ship having a propulsion device at the stern, and a water flow generator having a screw propeller for eliminating underwater floating organisms is provided separately from the propulsion device. In that case, the device, a propeller movable support mechanism capable of projecting the screw propeller out of the vessel from a recess for storage below the water surface of the hull outer plate surface, and a rotation drive mechanism of the screw propeller,
It is characterized by comprising a rectifying fin mechanism capable of rectifying the rotational flow from the screw propeller, and a propeller turning mechanism for turning the screw propeller to adjust the direction of the water flow from the propeller. .

[Action]

In the above-mentioned underwater floating organism elimination ship of the present invention, the screw propeller in the water flow generator for eliminating underwater floating organisms is normally stored in the storage recess as a hull recess under the water surface, and is usually a tugboat. Will be operated as a ship.

When dispatching in order to prevent underwater floating organisms from approaching the intake of a thermal power plant, etc., if necessary, make the above-mentioned screw propeller project outside the ship and then turn it so that it faces backward. , By doing this, it is possible to go to the site at high speed while assisting the stern propulsion device.

In the work of removing underwater floating organisms, the screw propeller is used as a side thruster to orient the bow toward the direction of removing underwater floating organisms, and then the screw propeller is also turned so as to face forward underwater floating organisms, and then the propeller. The work to remove the floating organisms in the water from the inflow route to the water inlet etc. is performed by the water flow from.

At that time, the stern propulsion device is used for canceling the thrust to the hull caused by the generation of the water flow from the screw propeller and for adjusting the position of the hull. Further, since the water flow from the screw propeller is rectified by the rectifying fin mechanism, the seabed soil is prevented from being rolled up by the water flow even in a shallow water region.

〔Example〕

An underwater floating organism elimination ship as an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view thereof, FIG. 2 is a plan view thereof, and FIG. 3 is a propeller turning mechanism of the water flow generator. Fig. 4 is a vertical sectional view showing Fig.
FIG. 5 is an elevation view showing a propeller projecting state by the movable support mechanism of the water flow generating device, FIG. 6 is an elevation view showing a propeller retracted state corresponding to FIG. 5, and FIG. [Fig. 4] is a plan view schematically showing the action of the above-mentioned underwater floating organisms removing ship.

As shown in FIGS. 1 and 2, turning propulsion devices 2 are provided in pairs at the stern of the hull 1, and the propulsion devices 2a are rotationally driven by a main engine (not shown) in the ship and steering is also provided. A swing drive mechanism (not shown) around the vertical axis of the propulsion device 2a is also provided so that the propulsion device 2a can be operated.

Further, a water flow generating device 3 for removing underwater floating organisms, which is provided with a screw propeller 3a that can project downward from the bottom of the hull 1 near the bow, is provided as a pair on the left and right.

As shown in FIGS. 5 and 6, the water flow generator 3 includes a screw, via a propeller movable support mechanism 5, from a recess for storage 4 inside the hull outer plate surface 1a at the bottom of the ship to the outside of the ship, as shown in FIGS. The propeller 3a can be projected.

The propeller movable support mechanism 5 includes arms 7 and 7 which can be moved up and down along a support column 6 and 6 of the ship via a hydraulic cylinder device (not shown).

Further, the propeller movable support mechanism 5 is provided with a propeller 3a
A rotary drive mechanism such as a motor 8 that is rotationally driven via a shaft system 3b and a gear 3c shown in the figure is supported.

A sealed bearing 9 is provided at a portion where the tubular main body 5a of the propeller movable support mechanism 5 slidably penetrates the top wall 4a of the storage recess 4.

Further, as shown in FIGS. 3 and 4, the water flow generator 3 covers the propeller 3a with a rectifying fin mechanism 10 having radial fins 10a capable of rectifying the rotational flow from the propeller 3a in a substantially straight line. It is attached to duct 11. In addition, such a rectifying fin mechanism is similarly provided in the propulsion device 2 at the stern.

Further, as shown in FIG. 3, the water flow generator 3 is rotated by a motor (not shown) as a propeller turning mechanism for turning the propeller 3a around the vertical axis to adjust the direction of the water flow from the propeller 3a. The drive shaft 12, the bevel gear 13a attached to the drive shaft 12, and the bevel gear 13b provided on the tubular main body 5a of the propeller movable support mechanism so as to mesh with the drive shaft 12.

In the above-mentioned underwater floating organisms removing ship of the present embodiment, the screw propeller 3a in the water flow generating device 3 for removing underwater floating organisms is always stored in the storage recess 4 as a hull recess below the water surface, It operates as a normal vessel such as a tugboat.

Then, when dispatching to prevent waterborne floating organisms such as jellyfish from approaching the intake of the thermal power plant, if necessary, after projecting the screw propeller 3a out of the ship, By rotating the drive shaft 12 in the turning mechanism, the propeller 3a is turned so as to face rearward via the bevel gears 13a, 13b and the tubular main body 5a, thereby assisting the stern propulsion device 2. , You can go to the site at high speed.

When removing aquatic floating organisms, the screw propeller 3a is used as a side thruster to turn the bow toward the direction of eliminating aquatic floating organisms, and then the screw propeller 3a is also turned to face the aquatic floating organisms in front of the propeller. Work is performed to remove floating organisms in the water from the inflow route to the water inlet etc. by the water flow from 3a.

At that time, as shown in FIG. 7, the stern propulsion device 2 is used to offset the thrust on the hull caused by the generation of the water flow from the water flow generation device 3 and to adjust the position of the hull.

In other words, the hull 1
Are opposed to each other to generate a water flow b in the direction in which the jellyfish group is excluded from the water flow generation device 3. Then, in order to cancel out the reaction force b ′ to the hull 1 due to the water flow b and to counteract the external force b ′ to the hull 1 due to the tidal current a, the hull is generated while the water flow c is generated backward by the propulsion device 2 at the stern. Generate thrust C ′ to 1.

In this way, the sum of the external force a'and the reaction force b'is the thrust force '.
And the hull 1 is held in place.

In this embodiment, a pair of left and right propulsion devices at the stern
Since 2, 2 are of the swivel type that can steer, by controlling each water flow generation direction of these propulsion devices 2, 2, the water flow generation direction from the water flow generation devices 3, 3 can be in the ship length direction. Even if it is not, the hull 1 can be held at a fixed position.

In the underwater floating organisms removal boat of this example, before the underwater floating organisms such as jellyfish approach the water intake of a thermal power plant in a seaside area, the hull is held in place in a water area slightly away from the water intake. However, it is possible to appropriately remove the floating organisms in the water, and the water flow generation device 3 is provided with the rectifying fin mechanism 10 to allow the screw propeller 3a to project from the propeller 3a even though the screw propeller 3a projects downward from the bottom of the ship. There is also an advantage that the rotating flow can be rectified to prevent rolling up of the seabed soil.

In the above-described embodiment, the screw propellers 3a, 3a of the pair of water flow generators 3, 3 are provided so as to project downward from the bottom of the ship, but these screw propellers are provided below the water surface of the bow. It may be provided so as to be able to project to both sides.

[Effect of device]

As described above in detail, the following effects or advantages can be obtained by the underwater floating organism elimination ship of the present invention.

(1) A water flow generator with a screw propeller for removing underwater floating organisms is provided separately from the stern propulsion device, and the device is installed from a recess for storage below the water surface and inside the hull skin. Since it has a propeller movable support mechanism that can project the above-mentioned screw propeller out of the ship, it is always possible to retract the above-mentioned screw propeller into the recess for storage and use it as a normal ship while eliminating underwater floating organisms. At this time, the above-described water flow generator can be used to appropriately perform the work of eliminating the aquatic floating organisms in the required water area while holding the hull in place by cooperating with the stern propulsion device.

(2) Since the screw propeller in the water flow generator is directed in the required direction by the propeller turning mechanism,
In addition to being able to freely remove underwater floating organisms, by using the above water flow generator as a side thruster, the operation of directing the bow toward a group of underwater floating organisms can be performed easily.

(3) In case of urgently dispatching to the required water area for elimination of underwater floating organisms, use the above water flow generator and turn the screw propeller toward the rear to energize the stern propulsion device. And can reach the site quickly.

(4) Since the water flow generator has a rectifying fin mechanism that rectifies the rotational flow from the screw propeller, it is possible to prevent the submarine soil from being rolled up during the work of eliminating floating organisms in water in a shallow water area.

[Brief description of drawings]

1 to 7 show an underwater floating organism elimination ship as one embodiment of the present invention. FIG. 1 is a side view thereof, FIG. 2 is a plan view thereof, and FIG. 3 is a water flow generator thereof. FIG. 4 is a vertical sectional view showing the propeller turning mechanism, FIG. 4 is a view taken along the line IV-IV in FIG.
FIG. 5 is an elevational view showing the propeller projecting state by the propeller movable support mechanism of the water flow generator, FIG. 6 is an elevational view showing the propeller storage state corresponding to FIG. 5, and FIG. FIG. 8 is a plan view schematically showing the action of the organism-eliminating vessel, FIGS. 8 and 9 show conventional means for eliminating underwater floating organisms, FIG. 8 is its plan view, and FIG. 9 is IX of FIG. -IX It is a cross-sectional view taken along the arrow. 1 ... Hull, 1a ... Hull outer shell surface at the bottom of the ship, 2 ... Rotating propulsion device, 2a ... Propulsor, 3 ... Water flow generator, 3a ....
Screw propeller, 3b …… Shaft system, 3c …… Gear, 4 ……
Recess for storage, 5 ... Propeller movable support mechanism, 5a ... Cylindrical body, 6 ... Strut, 7 ... Arm, 8 ... Motor, 9
...... Bearings with seals, 10 …… rectifying fin mechanism, 10a ……
Fins, 11 ... duct, 12 ... drive shaft, 13a, 13b ... bevel gear.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Uenomon 1-1 1-1 Atsunoura-machi, Nagasaki-shi, Nagasaki Mitsubishi Heavy Industries, Ltd. Nagasaki Shipyard (72) Inventor Kazuo Masuda, Atsunoura-cho, Nagasaki-shi, Nagasaki No. 1 Mitsubishi Heavy Industries, Ltd. Nagasaki Shipyard (72) Inventor Yoshio Kayo 1-1, Atsunoura-machi, Nagasaki-shi, Nagasaki Prefecture Mitsubishi Heavy Industries Ltd. Nagasaki Institute (72) Inventor, Tatsuji Ise 1 Atsunoura-cho, Nagasaki-shi, Nagasaki Prefecture No. 1 Mitsubishi Heavy Industries, Ltd. Nagasaki Shipyard (72) Inventor Hitoshi Kumamoto 2-5-1 Marunouchi, Chiyoda-ku, Tokyo Sanryo Heavy Industries Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A ship having a propulsion device at the stern, comprising a water flow generator having a screw propeller for eliminating underwater floating organisms separately from the propulsion device, the device comprising:
A propeller movable support mechanism capable of projecting the screw propeller out of the vessel from a storage recess inside the hull outer plate surface below the water surface, a rotation drive mechanism for the screw propeller, and a rotary flow rectified from the screw propeller. Rectifying fin mechanism and a propeller turning mechanism for turning the screw propeller to adjust the direction of the water flow from the propeller.