KR20090035966A - Underboard protection - Google Patents

Abstract

The present invention relates to a lower vessel protection device, and to prevent the polling (floating) in the lower portion of the vessel by lifting the net connected to the vessel and the vessel during the quayside of the vessel to the winch to wrap the outer shell, thereby reducing the cost of underwater cleaning The present invention relates to a marine undercarriage protection device that can minimize work time.

The lower vessel protection device of the present invention and the fixing rod is installed on the inner wall; One side is fixed to the fixing rod and the net surrounding the lower portion of the vessel so that polling (fouling) does not occur in the lower portion of the vessel; Buoys connected by the net and the cord to hold the other side of the net; A winch installed on one side of the ship to lift the net connected to the buoy and the rope; And a weight attached to the mesh to fix the mesh so that it does not move in the water, and when the vessel is located on the inner wall, the one side of the mesh connected to the buoy is lifted by the winch to wrap the lower portion of the vessel in the mesh. It features.

Description

Underfloor protection {Underwater anti-fouling curtain}

The present invention relates to a lower vessel protection device, and more particularly, to protect the lower portion of the vessel by preventing marine organisms such as barnacles from being attached to the lower portion of the vessel during the lining operation of the vessel (particularly, LNG vessels). Relates to a device.

In general, the work period of the quay wall for installation of equipment after launching is carried out in shipbuilding as an essential process for ship construction.

There are many marine life such as oysters, barnacles, sea anemones, and seaweed that cling to rocks in the waters of the quayside. It floats and clings to the lower part of the vessel, which is attached substrate.

As described above, the marine life inhabiting the sea attaches to the lower part of the ship and the attached marine life is called polling in the term of shipbuilding and marine life.

Normal vessels have a relatively short period of 2-3 months, but LNG ships require 10-12 months of longer than ordinary vessels.

As such, in the case of general ships with a relatively short quay period, polling is not attached to the lower part of the ship due to the short quay period, but for LNG ships with a long quay period, polling is attached to the lower part of the ship. It will inhabit.

As a result of the polling that clings to the lower part of the ship as described above, an underwater inspection of the lower part of the ship immediately confirms the need for cleaning immediately before the delivery of the ship, and if there is a large amount of polling, re-docking the dock. The owner is required to remove polling.

Thus, in the case of current LNG ships, clean painting is performed through re-docking and cleaning operations to remove the polling attached to the bottom of the ship by entering the diver just before the test run 2 to 4 weeks before delivery. Although the state is secured, there is a problem in that re-docking and cleaning are expensive and time-consuming. However, there is no improvement to solve the problem of polling (fouling) so far.

In order to solve the above problems, an object of the present invention relates to a lower vessel protection device that effectively prevents the polling is attached to the lower portion of the vessel during the quarrying work after launching the vessel.

Another feature of the present invention is to minimize the underwater cleaning time after the quay period, to minimize the re-docking and cleaning costs, and to ensure the best painting conditions.

In order to achieve the above object, the lower vessel protection device according to the present invention and the fixing rod is installed on the inner wall; One side is fixed to the stator by the rope and the net surrounding the lower portion of the vessel so that polling does not occur in the lower portion of the vessel; Buoys connected by the net and the cord to hold the other side of the net; A winch installed on one side of the ship to lift the net connected to the buoy and the rope; And a weight attached to the mesh to fix the mesh so that it does not move in the water, and when the vessel is located on the inner wall, the one side of the mesh connected to the buoy is lifted by the winch to wrap the lower portion of the vessel in the mesh. It features.

Preferably, the winch is a winch or a mobile winch installed on the side of the ship.

Preferably, the buoy is positioned at a distance from the quay wall so that the net is not subject to interference when the vessel enters the side of the quay wall.

Preferably, the mesh is a mesh having a mesh sufficient to prevent the passage of larvae of marine life instead of the easily draining of seawater.

The lower vessel protection device of the present invention configured and operated as described above, when the vessel is placed on the inner wall to lift the net to the winch to wrap the lower portion of the vessel with a net so that larvae of marine life such as barnacles do not pass through the net, Pollution may be attached to the bottom of the vessel to prevent habitat. Accordingly, the work procedure of re-docking and cleaning, which is repeated every time after the end of the wall work period, can be omitted, thereby minimizing work time, and thus re-docking and cleaning costs. It is possible to secure the best coating state while minimizing the

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a schematic diagram showing a lower vessel protection device which is provided below sea level and connected to a quay wall and a winch of a vessel.

Referring to FIG. 1, the lower vessel protection device of the present invention includes a stator 50, a mesh 40, a buoy 20, a winch 10, and a weight 30.

Fixing table 50 is installed on the side of the inner wall, for fixing one side of the net. The size and number of the fixing rod 50 can be appropriately selected by those skilled in the art according to the length or need of the vessel.

The quay wall is a wall made along the pier or the waterfront of the port and canal in order to bring the vessel 100 up and down the cargo and to lift the passengers, and at the shipyard is a wall made to install the equipment after the launch of the vessel. The fender is installed on the land surface of the quay wall and serves as a cushion to prevent collision between the ship and the quay wall due to the waves.

The mesh 40 serves to wrap the lower portion of the vessel so that polling does not occur at the lower portion of the vessel 100. One side of the mesh 40 is fixed to the holder 50, the other side is connected to the buoy 20 by a string (15). When the mesh 40 is pulled up using a winch, the seawater should have a mesh size sufficient to allow the seawater to easily escape, and at the same time, have a mesh that is sufficient to prevent the larvae of marine life from passing through. desirable.

Currently, when painting a ship in general, silicone paint is also used to prevent the adhesion of barnacles to the lower surface of the ship. Silicone paint prevents barnacle sticking due to slippery properties. However, it is also true that since silicone paint is easily scattered, it scatters and attaches to other parts of the ship, causing enormous damage such as difficulty in painting the part. In order to prevent this, at present, silicone shattering curtains (shading screens, DuPont 280 mesh) are installed. The mesh used in the present invention may use such a shatterproof curtain. The anti-scattering curtain for preventing the scattering of the silicone paint has a mesh enough to prevent seawater from escaping and the larvae of marine organisms to pass through, and thus can be used as the mesh of the present invention. However, the net of the present invention is not limited to the above-described mesh, and if the net has a mesh such that seawater easily escapes and larvae of marine life cannot be passed, it can be used as the net of the present invention.

The buoy 20 is a float in which the mesh 40 is connected to the rope 15 so that the mesh 40 in the water can be pulled up at any time. At least one buoy 20 is floating on the sea at regular intervals, it is preferable to have a buoyancy enough to not sink in the water by the underwater net 40 and weight 30. The size and number of buoys may be appropriately selected by those skilled in the art according to the size or need of the mesh 40.

In addition, the buoy 20 is located at a certain distance from the inner wall and is connected to the underwater net 40 and serves to space the net 40 so as not to interfere with the vessel when the vessel enters the side of the inner wall.

Winch 10 refers to a machine that lifts or lowers heavy objects by ropes or chains, and can be used by using winches already installed on the side of the ship or by installing a mobile winch on the side of the ship. The number of winches will be appropriately determined according to the size of the ship and the size of the mesh 40, which can be appropriately selected according to the needs of those skilled in the art.

The weight 30 serves to fix the net so as not to move in the water. It is desirable to have a weight capable of fixing the floating net 40 by the water in the water, and also has a weight enough to be pulled up with a small power by the original.

The string 15 connects the winch 10, the buoy 20, the mesh 40, the fixing table 50. The string 15 should not be easily corroded by salt, and it is preferable to use a durable string or chain in order to prevent damage by marine life and floats.

Figure 2 is a schematic diagram showing when the lower vessel protection device surrounding the lower vessel during the quay wall operation period.

Referring to FIG. 2, when the vessel is located on the side of the inner wall, one side of the mesh 40 connected to the buoy 20 is pulled up to the winch 10 to completely wrap the lower portion of the vessel in the mesh 40. Accordingly, the net 40 prevents marine larvae from being attached to the bottom of the vessel.

As mentioned earlier, LNG ships drift around in search of attachment substrates for marine larvae such as oysters, barnacles, sea anemones, and seaweed that cling to the rocks in the waters of the quayside during the lengthy 10-12 month operation. There was a problem in that it adheres to the lower part of the vessel, which is an attachment substrate, and in order to solve this problem, by revolving the lower part of the vessel with a mesh 40, the marine larvae are prevented from being attached to the lower part of the vessel. And cleaning costs can be minimized and working time can be shortened.

In shipbuilding and marine life, the class of marine life that clings to the lower part of the ship is called polling. It means to remove polling.

3 is a top schematic view of a vessel positioned on the side of the quay wall and connected with the vessel lower protection device according to a preferred embodiment of the present invention. That is, Figure 3 shows a state in which the vessel is located on the side of the quay wall installed the lower vessel protection device. The ship may enter between the quay and the buoy, or the ship may enter without interfering with the buoy with the buoy on its side.

It has been described above the vessel lower protection device according to an embodiment of the present invention. The embodiments described above are just one embodiment according to the present invention, and various modifications and changes may be made by those skilled in the art within the scope of the technical idea of the present invention. Such various modifications and changes will also fall within the scope of the claims as set forth below within the scope of the spirit of the present invention.

1 is a schematic view showing a lower vessel protection device provided below sea level and connected to a quay wall and a winch of a vessel in accordance with a preferred embodiment of the present invention.

Figure 2 is a schematic diagram showing when the lower vessel protection device surrounding the lower portion of the vessel during the quay wall operation, according to a preferred embodiment of the present invention.

3 is a top schematic view of a vessel positioned on the side of a quay wall and connected with a vessel lower protection device in accordance with a preferred embodiment of the present invention;

* Description of the symbols for the main parts of the drawings *

10: winch 15: row

20: Buoy 30: Weight

40: net 50: holder

100: ship

Claims (4)

A device for protecting the lower part of the ship by preventing polling on the bottom of the ship, Fixing table 50 is installed on the inner wall; One side is fixed to the holder 50, the mesh 40 surrounding the lower portion of the vessel so that polling does not occur in the lower portion of the vessel; Buoy 20 connected by the mesh 40 and the rope 15 to hold the other side of the mesh 40; A winch (10) installed on one side of the ship to lift up the mesh (40) connected to the buoy (20) and the rope (15); And It is attached to the mesh 40, the weight 30 for fixing the mesh does not move in the water; When the vessel is located on the inner wall, the lower vessel protection device, characterized in that the other side of the net connected to the buoy (20) to the winch (10) to wrap the bottom of the vessel with the mesh. The method of claim 1, The winch 10 is a ship lower protection device, characterized in that the winch or movable winch installed on the side of the ship. The method of claim 1, Said buoy 20 is located at a certain distance from the quay, so that the net 40 is not interfered with the vessel when the vessel enters the side of the quay wall. The method of claim 1, The net 40 is a marine vessel lower protection device, characterized in that the mesh has a mesh (mesh) enough to prevent the passage of marine life larvae instead of easily escape.

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