JP2573516Y2 - Wave-breaking ship - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wave-breaking ship, and more particularly, to a ship for reducing wave-making resistance.

[0002]

2. Description of the Related Art In general, a drag against a propulsion force of a ship includes not only frictional resistance but also wave-making resistance.

For this reason, various devices have been conventionally devised in order to reduce the wave-making resistance. As an example,
There are so-called spherical bows in which the hull has a streamlined or spindle shape or the like, and a so-called hemispherical bow in which the lower end of the bow protrudes forward in a columnar shape and the tip is inflated forward.

[0004]

[Problems to be Solved by the Invention] However, the conventional vessels for reducing wave-making resistance are all limited to those in which the shape of the hull itself is devised. No attempt was made to reduce this.

Therefore, the present inventor has intensively studied whether there is any measure for reducing the wave-making resistance by devising other than the hull shape, and as a result, has come to the following idea.

[0006]

That is, the wave breaking ship according to the present invention is provided with a side flow control plate at both sides of the hull at a distance from the hull and at the bottom of the hull. Bottom current plate
Attached, and the hull, the side straightening plates, and the bottom
Established the thruster to channel formed by a rectifying plate, wherein
The waves caused by the water pushed away by the bow of the hull
Without propagating to the outside by the flow plate, and water in the flow path
The flow rate is increased by the propulsion device and released to the rear .

[0007]

[Effects of the Invention] In a conventional ship without a current plate, it is considered that the bow supplies energy to a distant place through waves caused by the dislodged water. It was a wave resistance.

On the other hand, in the present invention, the bow of the hull
Waves due to displaced water are directed outside by rectifying plates on both sides
Propagating the water in the flow path without propagating
And is released rearward. But
Therefore, in ships without a conventional current plate,
The waves created by the water displaced at the bow create wave resistance and
This is a drag on the hull's progress,
In the plan, the water displaced by the bow of the hull
Blocks the waves from propagating to the outside
To significantly reduce wave resistance and increase propulsion.
Can be. In addition, in this invention,
With the rise, the water level pushed away by the bow rises and the propulsion
To reduce the flow rate
To suppress the rise in water level
Can increase the propulsion further
You.

[0009]

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

FIG. 1 is a plan view of a wave breaking ship according to one embodiment, and FIG. 2 is a side view of the wave breaking ship.

The wave-breaking ship includes a rectifying plate (hereinafter referred to as a side rectifying plate) 3 which is supported on both sides of the hull 1 by a telescopic supporting arm 2.

The side baffle 3 keeps the water displaced by the bow 1a between the hull 1 and the side baffle 3 under the condition that the water does not overflow from the front end of the side baffle 3 and FIG. As shown by a dashed line in FIG. 2, the vehicle is released backward through a flow path 4 formed by the hull 1 and the side current plate 3. 1 and 2
The illustrated solid arrows represent streamlines outside the flow path 4.

Therefore, according to the wave-dissipating ship having the side rectifying plate 3, the wave caused by the water pushed away by the bow 1a does not propagate to the outside of the side rectifying plate 3, and the wave-making resistance is greatly reduced. It becomes possible to do.

When the side current plate 3 is held at a fixed position, the water level in the flow path 4 rises in proportion to the traveling speed of the hull 1 and the water in the flow path 4 is moved to the front end of the side current plate 3. It is more likely that the propulsion will weaken due to overflow from the outside.

For this reason, in this embodiment, another rectifying plate (hereinafter referred to as a bottom rectifying plate) 5 is attached to the bottom of the hull 1 of the side rectifying plate 3 and the side rectifying plate 3 and the bottom rectifying plate. A pair of propulsors 6 is installed at an appropriate position of the flow path 4 between the plate 5 and the hull 1, preferably at a central side of the hull 1.

The bottom straightening plate 5 releases the water pushed away by the bow 1a to the rear through the flow path 4 formed by the side straightening plate 3, the hull 1 and the bottom straightening plate 5. At this time, thruster 6
Acts to increase the flow velocity in the flow path 4. For this reason, the rise of the water level in the flow path 4 is suppressed, and it is possible to prevent the water from overflowing from the front end of the side current plate 3 to the outside.

Therefore, when the bottom straightening plate 5 and the propulsion unit 6 are provided in addition to the side straightening plate 3, it is possible to sufficiently reduce the wave making resistance even when the hull 1 moves at a high speed.

As described above, according to the wave-dissipating ship of this embodiment, the wave-making resistance is reduced, and the propulsion force can be increased. Although this may cause an increase in turbulence in the flow path 4 due to the formation of the side rectifying plate 3 and an increase in drag due to an increase in the amount of water, the wave-making resistance is reduced as a whole. It means that the force increases. In addition, it is needless to say that undesired effects of waves on surrounding ships, coasts, and the like can be reduced.

The front and / or rear of the side current plate 3 may be rotatable by an actuator so that the angle can be adjusted to an angle according to the traveling direction of the hull 1.
It is also possible to adopt a configuration in which a steering function is provided at the rear of the side current plate 3. Further, the cross-sectional shape of the entire rectifying plate including the side rectifying plate 3 and the bottom rectifying plate 5 is not limited to the U-shape as in the above-described embodiment.
It is also possible to form a V-shape, a V-shape or the like.

[Brief description of the drawings]

FIG. 1 is a plan view of a wave breaking ship according to one embodiment.

FIG. 2 is a side view of the wave breaking ship.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hull 3 Side baffle 4 Channel 5 Bottom baffle 6 Propulsion unit

Claims (1)

(57) [Scope of request for utility model registration] 1. A bottom rectifying plate in the bottom of the hull with the sides of the hull at the hull and interval attaching a side <br/> rectifying plate
And the hull, the side straightening plates and the bottom
A propulsion device is installed in the flow path formed by the partial rectifying plate, and waves caused by water displaced by the bow of the hull are applied to the both sides.
Do not propagate to the outside by the partial rectifying plate, and
Water is released backward by increasing the flow velocity by the propulsion device
Wave breaking ship characterized by doing.