KR20090129061A - Waste of ballast tank removing apparatus in a ship - Google Patents

Abstract

PURPOSE: A sediment removing apparatus of a ship ballast tank is provided to install a settling tank to seclude that the foreign material of a big particle flows in the ballast tank, thereby reducing the weight of a ship. CONSTITUTION: A settling tank(140) eliminates a foreign material included in the seawater. The settling tank supplies the seawater to a ballast tank(110). A ballast water outlet pipe(146) is formed in the lower end of a main body(141). The width of the lower part of the main body is reduced. The seawater flows in a ballast water inlet pipe(144). The ballast water outlet pipe is installed along the ballast tank. The seawater from which the foreign material is removed is supplied to the ballast tank through the ballast water outlet pipe.

Description

Sediment removal device for ship ballast tanks {WASTE OF BALLAST TANK REMOVING APPARATUS IN A SHIP}

The present invention relates to a sediment removal device of a ship ballast tank, and more particularly, by removing large particles of foreign matter contained in seawater and entering the ballast tank, the sediment generated in the ballast tank can be reduced and more effectively removed. The present invention relates to a sediment removal device for ship ballast tanks.

In general, the ballast tank of a ship is to help safe navigation by minimizing the variation of the center of gravity of the ship by loading and unloading the cargo. In other words, if the vessel is loaded with cargo, the center of gravity of the vessel is located below the sea level without filling the seawater in the ballast tank, so that it can sail safely even when external forces such as waves are applied. It operates by introducing seawater into the ballast tank so that the center can be lowered.

The ballast tanks as described above are provided with a plurality of symmetrical structures on the left / right side of the lower end of the vessel, each tank is formed in an independent room structure so that the seawater introduced into the ballast tank is not moved to another tank.

Meanwhile, as described above, the inflow and outflow of seawater is repeated in the ballast tank according to the amount of shipment of cargo, and when the seawater inflows, mud, microorganisms and solids are introduced together with the seawater, and these inflows are tanks during the operation of the vessel. It is deposited on the bottom and accumulated. As such, the sediment generated at the bottom of the tank remains in the tank instead of being discharged with the seawater when the seawater is discharged, and the amount of sediment is gradually increased as the seawater and the inflow and outflow are repeated.

Sediment remaining in the ballast tank as described above is a factor of hull corrosion, reduction of cargo shipments and lowering the operating speed, it is necessary to remove the deposits remaining in the ballast tank from time to time, the operator to remove the ballast Although the work was carried directly into the tank, the work was carried out in an enclosed space, and there are many difficulties in working, such as the inability to remove solidified sediment due to the discharge of sea water. It was virtually impossible to remove debris from the ballast tanks every time.

In consideration of the above problems, there is disclosed a ballast tank sediment removing apparatus of a ship to allow the sediment to be discharged with the discharge of sea water.

The sediment removal device is configured to discharge the sediment with the sea water by spraying the water installed in the ballast tank with a spray in the discharge of seawater introduced into the ballast tank to remove the sediment with the ballast tank of the vessel The device is disclosed in Korean Application No. 10-2002-0014385.

1 is a cross-sectional view showing the installation state of the ballast tank sediment removal device of the LNG carrier, Figure 2 is a perspective view showing the installation state of the ballast tank sediment removal device of the LNG carrier, the ballast installed on the side of the LNG carrier In each wing tank constituting the tank, the pipe 10 for supplying water from the outside of the wing tank 2 to the respective compartments provided inside the wing tank 2, and the middle portion of the pipe 10. It is shown that it is composed of a spray 20 to spray the installed and supplied moisture in a predetermined direction.

The operation is to supply water through the pipe 10 from the outside of the wing tank 2, the water supplied through the pipe 10 is sprayed through the spray (20). The sprayed water makes it possible to wash down the deposits deposited in the wing tank 2, and the water and the deposits are discharged through the drain. At this time, the discharged sediment and water are discharged to the outside of the ship at the same time, and then discharged after removing the sediment from the discharged water.

However, the initial seawater entering the ballast tanks is accompanied by clay, silt or sand, and these large inflows are precipitated directly from the ballast tanks, and these large inflows are not easily removed. This, in turn, caused the ship to be heavier, reducing cargo loading and lowering the operating speed, while also having an inefficient energy problem.

Moreover, in the conventional deposit removal apparatus, only the deposits around the spray 20 can be removed, and no effective removal is performed for the deposits in other areas. Sediment that is not removed in this way causes problems such as weight increase and corrosion of the ship, and eventually there is a hassle that the worker has to go inside the tank to clean.

Therefore, the present invention has been devised to solve the above-described drawbacks, and by installing a sedimentation tank to remove the foreign matter contained in the seawater and supply it to the ballast tank, blocking the inflow of foreign particles of large particles in the ballast tank. It is an object of the present invention to provide a sediment removal device for a ship ballast tank.

In addition, the present invention, by installing the auxiliary pipe along each wing tank and the bottom tank, by installing a flexible nozzle pipe that can spray the water while flowing with the nozzle itself in each auxiliary pipe, filled inside the wing tank and the bottom tank It is an object of the present invention to provide a sediment removal device for ship ballast tanks which allows the sediment to be suspended by generating flow in existing water.

In order to achieve the above object, the present invention, in the sediment removal device of the ship ballast tank, a sedimentation tank for removing the foreign matter contained in the incoming seawater and supplying it to the ballast tank is installed on the stern side of the ship, The tank is provided with a main body of which the width of the lower part is reduced toward the discharge port formed at the lower end so that the settled foreign matter is discharged, a ballast water inlet pipe connected to the main body and introduced with the seawater, and the seawater from which the foreign matter is removed is supplied to the ballast tank. Provided is a sediment removal device of the ship ballast tank including a ballast water discharge pipe is installed along the ballast tank from the main body.

And preferably, the settling tank is installed such that foreign matters are removed while the main body is installed at one or more of the stern side while the incoming seawater passes through the main body in turn.

In addition, a flow control plate is provided inside the main body of the precipitation tank to control the flow of the introduced seawater to prevent foreign matter from floating to the upper side of the main body.

More preferably, the flow control plate is formed in a plate shape and inclined to one side from the inside of the main body, the ballast water inlet pipe is located at the lower side of the main body, and the ballast water discharge pipe is located at the upper side of the main body based on the flow control plate. Is installed.

In addition, the flow control panel is provided in the shape of a polygonal pyramid or a cone with a pointed upper end, the ballast water inlet pipe is installed close to the pointed upper end of the flow control plate, the ballast water discharge pipe is located on the upper side of the main body.

In addition, the upper side of the main body is provided with auxiliary pipes branching into the bottom tank and each section of the wing tank having a laminated structure in the ballast tank, the nozzle and itself for floating the sediment deposited inside the wing tank and the bottom tank on the auxiliary pipe. It is characterized in that the flexible nozzle tube which can spray the water while being installed.

As described above, the present invention can prevent the inflow of large particles of foreign matter into the ballast tank by installing the sedimentation tank, thereby reducing the weight of the ship and improving the operating speed.

In addition, through the nozzle that can float sediment in each wing tank and bottom tank and the flexible nozzle tube which can spray water while self-flowing, the sediment deposited inside wing tank and bottom tank can be effectively suspended in multiple directions. Removal can be made.

Hereinafter, the operating principle of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, when it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

Figure 3 is a plan view of the sediment removal device of the ship ballast tank according to the present invention, Figure 4 is a side view of the sediment removal device of the ship ballast tank according to the present invention, Figure 5 is a first embodiment of the sedimentation tank according to the present invention 6 is a configuration diagram of a second embodiment of a precipitation tank according to the present invention, and FIG. 7 is a configuration diagram of a third embodiment of the precipitation tank according to the present invention.

3 and 4, the vessel ballast tank shown in FIG. 3 includes a pump 130 for introducing seawater, a ballast water inlet pipe 144 for removing foreign substances of large particles contained in the seawater, and a tank for precipitation. It is composed.

Pump 130 is for supplying seawater to the ballast tank 110 to pull up the seawater, is installed in the stern side pump room of the ship not shown, the inflow of seawater through the seawater inlet pipe 132 contained in the sea surface This is done.

One or more sedimentation tanks 140 capable of removing foreign substances contained in the seawater raised from the pump 130 in close proximity to both sides of the pump 130 are installed.

The sedimentation tank 140 is installed vertically on the stern side, and is provided with a body 141 that can contain seawater by forming a space therein, and a path of seawater flowing from the pump 130 is provided in the body 141. The ballast water inlet pipe 144 is installed, and the ballast water discharge pipe 146 is installed from the main body 141 along the ballast tank 110 to the bow side so that seawater from which foreign substances have been removed is introduced into the ballast tank 110.

A discharge port 142 is formed at the center lower end of the main body 141 to discharge the settled foreign matter, and the discharge port 142 is formed with a valve 142a for controlling the opening and closing, and furthermore, the main body 141 The lower portion toward the discharge port 142 is installed in the form of a normal light lower strait (上 廣 下 狹) is gradually reduced.

The ballast water discharge pipe 146 is installed along the lower side of the ballast tank 110 from the stern side to the bow side of the vessel 100 to fill the ballast tank 110 with seawater.

In addition, although not shown in the ballast water discharge pipe 146, it is preferable that a means for assisting the supply of water, such as a pump, is provided.

Here, as shown in Figure 4, the upper side of the main body 141, the auxiliary pipe 160 is branched to each section and the bottom tank of the wing tank 120 having a laminated structure in the ballast tank is installed, the auxiliary pipe 160 On the wing tank 120 and the bottom tank is installed with a nozzle 162 for floating the precipitate deposited therein and a flexible nozzle tube 164 capable of injecting water while flowing by itself. The flexible nozzle tube 164 is made of a flexible material and can be self-flowing by hydraulic pressure.

On the other hand, the sedimentation tank 140 is the first embodiment, as shown in Figure 5, by controlling the flow of seawater introduced into the main body 141 of the sedimentation tank 140, foreign matter large particles are the main body 141 Flow control panel 150 is installed to prevent the floating to the upper side of the.

The flow control panel 150 is formed in a plate shape to be inclined toward one side from the inside of the main body 141 to isolate the upper and lower portions of the main body 141 to some extent. This prevents heavy foreign matter deposits from floating to the upper side by flow and exiting into the ballast water discharge pipe 146.

At this time, the ballast water inlet pipe 144 is connected to the main body 141 so that the ballast water inlet pipe 144 is located on the lower side of the flow control panel 150, the ballast water discharge pipe 146 of the flow control panel 150 It is connected to the main body 141 corresponding to the upper side.

In FIG. 6 as a second embodiment of the sedimentation tank 140, at least one vertical main body 141 is provided side by side on the stern side. At this time, the ballast water inlet pipe 144 is connected to the lower part of the main body 141 close to the shortest stern side, and then the connecting pipe 145 connecting the upper part of the main body 141 and the lower part of the next main body 141 is the main body ( 141 is installed to be connected in sequence, and the ballast water discharge pipe 146 is installed in the main body 141 closest to the bow side.

And the lower part of each main body 141, the outlet 142 for connecting the main body 141 as one is installed at the bottom with the valve (142a).

Therefore, the seawater is filled in the main body 141 arranged side by side, foreign matter is filtered out from the final main body 141 may be supplied to the ballast water more purified seawater.

In addition, the flow control plate has a multi-horn shape, such as a triangular pyramid or a square pyramid with a sharp top, or is installed in a conical shape, as shown in FIG. 7 as a third embodiment, and the ballast inlet pipe 144 has a sharp flow control panel 152 with a sharp top. It is installed to be located close to the upper side of the), the ballast water discharge pipe 146 is connected to the main body 141 corresponding to the upper side of the flow control plate 152.

The function of the sediment removal device of the ship ballast tank made of such a structure is made as follows.

First, the seawater introduced through the pump 130 is introduced into the sedimentation tank 140, the foreign matter of the large particles contained in the seawater in the sedimentation tank 140, the lower portion of the body 141 is gradually reduced in diameter It is precipitated in, and the foreign water is settled is discharged through the ballast water discharge pipe (146).

And the foreign matter precipitated in the lower portion of the main body 141 is discharged to the outside through the outlet 142 by opening the valve 142a which is automatically controlled.

Here, in the sedimentation tank 140 according to the first embodiment, when seawater is introduced through the ballast water inlet pipe 144 connected to the main body 141 so as to be located at the lower side of the flow control panel 150, foreign substances of heavy load are introduced. It is precipitated to the lower side of the main body 141. At this time, the sediment may be floated to the upper side by the flow through the seawater to be filled, but is restrained by the inclined flow control panel 150 is not suspended and immediately sinks again. Therefore, the ballast water discharge pipe 146 connected to the upper side of the main body 141 is always supplied to the ballast tank 110, only the sea water from which foreign matter is effectively removed.

In the sedimentation tank 140 according to the second embodiment, when seawater flows into the main body 141 provided with the ballast water inlet pipe 144, some sediment sinks to the lower part of the main body 141, and then some sediment is deposited. Submerged seawater is passed through the main body 141 arranged side by side along the connecting pipe 145 in order to sink the foreign matter with a large load, and the purified water can be supplied to the ballast water from the final body 141 have.

In addition, in the sedimentation tank 140 according to the third embodiment, when the seawater falls to the flow control plate 152 with the top pointed through the ballast water inlet pipe 144, the seawater falls downward along the flow control plate 152, At this time, foreign matter of heavy load is prevented from floating by the flow on the lower side of the flow control plate 152. Likewise, the ballast water discharge pipe 146 connected to the upper side of the main body 141 through the flow control panel 152 is always supplied to the ballast tank 110 only the seawater effectively removed foreign matter.

On the other hand, the seawater introduced into the ballast tank 110 is deposited on the bottom surface of the tank by microorganisms, even if large particles of foreign matter are removed from the precipitation tank 140, the removal of this deposit is often required.

Therefore, when the amount of cargo to be shipped to the vessel 100 is required to discharge the seawater introduced into the ballast tank 110, the sediment is discharged together with the seawater by floating the sediment by operating before discharge of the seawater.

That is, before the discharge of the seawater, the seawater from which foreign matter is removed through the pump 130 and the precipitation tank 140 is connected to the main body 141, and the auxiliary pipe 160 leading to each wing tank 120 and the bottom tank 160. Supplied along.

At this time, the seawater is injected through the nozzle 162 and the flexible nozzle pipe 164 installed on the auxiliary pipe 160, so as to flow freely by the flow rate to the inner wall of the wing tank 120 and the bottom tank. The deposited precipitate is effectively removed from all directions and suspended in various directions.

Floating sediment as described above is discharged along with the discharge of sea water is removed by removing the sediment in the ballast tank (110).

What has been described above is only a preferred embodiment of the sediment removal device of the ship ballast tank according to the present invention, the present invention is not limited to the above-described embodiment, the subject matter of the present invention as claimed in the following claims Without departing from the scope of the present invention, any person having ordinary skill in the art will have the technical spirit of the present invention to the extent that various modifications can be made.

1 is a cross-sectional view showing an installation state of a ballast tank deposit removal device of a conventional LNG carrier;

2 is a perspective view showing an installation state of a ballast tank sediment removal device of a conventional LNG carrier;

3 is a plan view of the sediment removal device of the ship ballast tank according to the present invention,

Figure 4 is a side view of the sediment removal device of the ship ballast tank according to the present invention,

5 is a configuration diagram of a first embodiment of the sedimentation tank according to the present invention;

6 is a configuration diagram of a second embodiment of the sedimentation tank according to the present invention;

7 is a third embodiment of the sedimentation tank according to the present invention. The configuration diagram.

<Description of the symbols for the main parts of the drawings>

100 vessel 110 ballast tank

120: wing tank 130: pump

132: seawater inlet pipe 140: sedimentation tank

141: main body 142: outlet

142a: valve 144: ballast water inlet pipe

145: connector 146: ballast water discharge pipe

150, 152: flow control panel 160: auxiliary piping

162: nozzle 164: flexible nozzle tube

Claims (6)

In the sediment removal device of the ship ballast tank, A sedimentation tank for removing the foreign matter contained in seawater and supplying it to the ballast tank is installed at the stern side of the vessel, The precipitation tank, A main body of which a width of the lower part is reduced toward an outlet formed at a lower end so that the precipitated foreign matter is discharged; Ballast water inlet pipe is connected to the main body is introduced into the sea water, A ballast water discharge pipe is installed along the ballast tank from the main body so that the seawater from which the foreign matter is removed is supplied to the ballast tank. Sediment removal device of the ship ballast tank comprising a. The method of claim 1, The sedimentation tank is, one or more of the main body is installed on the stern side seawater flowing in the sediment removal device of the ship ballast tank so that the foreign material is removed while passing through the main body. The method according to claim 1 or 2, In the body of the tank for precipitation, Sediment removal device of the ship ballast tank is installed to control the flow of the introduced seawater to prevent the foreign matter from floating to the upper side of the main body ballast tank is installed. The method of claim 3, wherein The flow control plate is installed in an inclined form on the inside of the main body in the form of a plate, The ballast water inlet pipe is located on the lower side of the main body, the ballast water discharge pipe is located on the upper side of the body relative to the flow control plate sediment removal device of the ship ballast tank. The method of claim 3, wherein The flow control plate, It is installed in the shape of a polygonal pyramid with a pointed top or a cone, The ballast water inlet pipe is installed close to the pointed upper end of the flow control plate, Ballast water discharge pipe is a sediment removal device of the ship ballast tank is located on the upper side of the body. The method of claim 1, On the upper side of the main body is provided an auxiliary pipe branched to each section and the bottom tank of the wing tank having a laminated structure in the ballast tank, And a nozzle for floating the sediment deposited in the wing tank and the bottom tank, and a flexible nozzle tube capable of spraying water while flowing on the auxiliary pipe.

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