WO2014069719A1

WO2014069719A1 - Anti-freezing structure of ballast tank using insulation material

Info

Publication number: WO2014069719A1
Application number: PCT/KR2013/001149
Authority: WO
Inventors: 이춘주; 이재만
Original assignee: 한국해양과학기술원
Priority date: 2012-11-05
Filing date: 2013-02-14
Publication date: 2014-05-08
Also published as: KR101399950B1; KR20140059315A

Abstract

The present invention relates to an anti-freezing structure of a ballast tank using an insulation material, and more specifically, by blocking the introduction of outside cold using an insulation material, freezing of the ballast of a ship sailing in polar regions can be prevented through simple structural changes. Particularly, the present invention can increase the temperature of a ballast tank without comprising a separate heating device, by using the waste heat of combustion gas discharged from an engine combustion chamber of a ship such that the temperature of the ballast tank of a ship sailing in polar regions can be maintained above the freezing point. In addition, the present invention can control the area to which the combustion gas is supplied according to the temperature of the inside of the ballast tank and the height of the sea surface, thereby efficiently using waste heat of the combustion gas. Therefore, reliability and competitiveness for ships and freight fields, and particularly, the ships sailing in polar regions can be improved.

Description

Ballast tank anti-icing structure using insulation

The present invention relates to a ballast tank anti-icing structure using a heat insulator, and more particularly, by preventing the inflow of external cold air by using a heat insulator, it is possible to prevent the ice ballast tank of the ship operating the polar region.

In particular, the present invention by increasing the temperature of the ballast tank by using the waste heat of the combustion gas discharged from the engine combustion chamber of the ship through a simple structural change, the heat insulating material that can maintain the temperature of the ballast tank of the ship operating the polar region above the freezing point It relates to a ballast tank freezing prevention structure using.

In general, the ship is provided with a ballast tank (BT, Ballast Tank), as shown in Figure 1 to adjust the draft and trim (Trim) of the ship according to the loading state of the cargo, the ballast tank (BT) is a vessel ( It will function to maintain balance and stability of V).

For example, a cargo ship carrying cargo will operate with seawater in a ballast tank to ensure efficient operation, balance and stability of propellers and rudders in the water if there is not enough cargo. As such, the water loaded in the ballast tank is referred to as ballast water.

In particular, in the case of a ship carrying resources such as LNG, crude oil and iron ore as cargo, the space inside the ship is divided into two parts for preventing the outflow of cargo during the external collision of the ship and for the safe operation of the ship. The inner space is used as cargo tank and the outer space is used as ballast tank.

In this way, since the ballast tank of the ship is installed close to the hull outer wall (VO), when the ship operates in the polar region, freezing occurs when the ballast water temperature in the ballast tank drops below 2 degrees below zero. When the ballast water freezes, the ballast tanks become inoperative and cause a danger to the ship operation.

In particular, as shown in FIG. 2, since the outside temperature (sea water temperature) is higher than the freezing point in the region R2 lower than the sea level SS, the influence on the freezing of the ballast tank BT is small, but the sea level SS In the region R1 higher than), the outside temperature (atmospheric temperature) is much lower than the freezing point, and the outside air is introduced into the ship to cause freezing in the ballast tank BT.

In order to prevent this, a method of generating air bubbles in the ballast tank or heating the ballast tank by using a heater during polar operation is known, but most of the technologies are complicated in construction and difficult to maintain.

In order to solve this problem, there is a Republic of Korea Patent Publication No. 10-0952911 'shipping ballast prevention device of the ship' (hereinafter referred to as the prior art), but in the prior art storage tanks, supply pipes, valves, etc. to evaporate seawater In addition to the configuration of the need to install a storage tank for evaporating seawater on the deck of the ship, the space utilization of the deck is reduced, as well as problems such as not applying the prior art to the ship to use the deck there was.

In order to solve the problems as described above, the present invention can prevent the freezing of the ballast tank of the ship operating the polar region by blocking the inflow of external cold air by forming an insulating material between the hull outer wall and the ballast tank and the upper portion of the ballast tank. It is an object of the present invention to provide a ballast tank anti-icing structure using an insulating material.

In particular, the present invention by increasing the temperature of the ballast tank by using the waste heat of the combustion gas discharged from the engine combustion chamber of the ship through a simple structural change, the heat insulating material that can maintain the temperature of the ballast tank of the ship operating the polar region above the freezing point It is an object to provide a ballast tank anti-icing structure using the.

In addition, an object of the present invention is to provide a ballast tank freezing prevention structure using a heat insulating material that can efficiently use the waste heat of the combustion gas by controlling the region in which the combustion gas is supplied in accordance with the temperature inside the ballast tank and the height of the sea surface. .

In order to achieve the above object, the ballast tank freezing prevention structure using the heat insulating material according to the present invention, the upper surface insulating material configured in the upper portion of the ballast tank; And a side heat insulating material formed between the ballast tank and the outer wall of the ship, wherein the side heat insulating material is connected to the top heat insulating material and is formed to be lower than the height of the ballast draft line of the ship.

In addition, a plurality of horizontal pipes may be formed at a predetermined interval in the transverse direction in at least one of the upper surface insulating material and the side insulating material.

In addition, a plurality of vertical pipes may be formed in each of the predetermined intervals so as to spatially connect two horizontal pipes adjacent to each other among the plurality of horizontal pipes in at least one of the upper surface insulating material and the side insulating material.

In addition, at least one of the upper surface insulating material and the side insulating material may be spaced apart from the ballast tank so that a space is formed between at least one of the upper surface insulating material and the side insulating material and the ballast tank.

In addition, a plurality of connecting pipes may be formed in at least one of the upper surface insulating material and the side insulating material so as to spatially connect the horizontal pipe or the vertical pipe and the space part.

In addition, the cross pipe may be connected to the flue of the engine combustion chamber.

In addition, a plurality of opening and closing valve configured between the flue and the horizontal pipe; A plurality of temperature sensors configured in the ballast tank; And a control module electrically connected to the on / off valve and the temperature sensor, wherein the control module is configured to open the on / off valve to spatially connect the flue and the horizontal pipe when the temperature detected by the temperature sensor is less than or equal to the freezing temperature. You can control the connection.

The apparatus may further include a water level sensor configured to detect a height of the sea level, wherein the control module is configured in an area higher than the height of the sea level based on the height of the sea level detected by the water level sensor or the temperature detected by the temperature sensor. The on-off valve configured to be connected to the horizontal pipe configured at the height corresponding to the height of the temperature sensor which senses the temperature below the horizontal pipe or the freezing point may be opened.

By means of the above solution, the present invention has the effect of preventing the freezing of the ballast tank of the ship to operate the polar region with a simple structural change.

Therefore, there is an advantage that can be easily applied to various kinds of ships.

In addition, by using the waste heat of the combustion gas discharged from the engine combustion chamber to maintain the temperature of the ballast tank without configuring a separate heating device, there is an effect that the efficient use of energy can be enabled.

In particular, the present invention has the advantage that the waste heat of the combustion gas can be efficiently used by controlling the region in which the combustion gas is supplied in accordance with the temperature inside the ballast tank and the height of the sea surface.

Therefore, it is possible to improve the reliability and competitiveness of the ships and cargo transportation field, especially the ships that operate in the polar region.

1 is a view for explaining the ballast tank structure of a general ship.

2 is a view for explaining the freezing phenomenon of the ballast tank.

Figure 3 is a block diagram for explaining an embodiment of the ballast tank freezing protection structure using the heat insulating material according to the present invention.

Figure 4 is a block diagram for explaining another embodiment of the ballast tank freezing protection structure using the heat insulating material according to the present invention.

Figure 5 is a block diagram for explaining another embodiment of the ballast tank freezing prevention structure using the heat insulating material according to the present invention.

Figure 6 is a block diagram for explaining another embodiment of the ballast tank anti-icing structure using the heat insulating material according to the present invention.

Figure 7 is a block diagram for explaining another embodiment of the ballast tank freezing prevention structure using the heat insulating material according to the present invention.

Figure 8 is a block diagram for explaining another embodiment of the ballast tank freezing prevention structure using the heat insulating material according to the present invention.

Examples of the ballast tank anti-icing structure using the heat insulating material according to the present invention can be applied in various ways, hereinafter with reference to the accompanying drawings will be described the most preferred embodiment.

Referring to FIG. 3, in the ballast tank freezing prevention structure using the heat insulating material, the heat insulating material 100 is configured to surround the side and the top of the ballast tank BT.

The heat insulating material 100 includes an upper heat insulating material 110 configured at an upper portion of the ballast tank BT and a side heat insulating material 120 formed between the ballast tank BT and the outer wall VO of the ship.

In addition, the upper surface insulating material 100 and the side insulating material 120 may be formed of the same material. For example, the top insulation 100 and the side insulation 120 may be formed of porous foamed styrene resin (Styrofoam).

In particular, the side insulation 120 is formed to be lower than the height of the ballast draft (Lmin) of the vessel in order to prevent the cold air of the atmosphere penetrates into the ship. Here, the ballast waterline is a relative term of the full waterline, and refers to the waterline without loading the cargo except for the equipment of the vessel.

Therefore, if the side insulation 120 is formed to extend from the lower portion of the ballast water line (Lmin) to the upper surface insulation (110), it is possible to prevent the ballast tank (BT) freezing regardless of the cargo load of the vessel.

Figure 4 is a block diagram for explaining another embodiment of the ballast tank freezing protection structure using the heat insulating material according to the present invention. Here, Figure 4 (a) is a configuration view seen from the front, Figure 4 (b) is a configuration view viewed from the side, the same also in Figures 5 and 7 to be described below.

Referring to FIG. 4, a horizontal pipe 130 may be formed in the upper surface insulating material 110 and the side insulating material 120 in the longitudinal direction (the foreign material to the solid material direction) of the corresponding vessel.

In other words, inside the at least one of the upper surface insulating material 110 and the side insulating material 120, a plurality of horizontal pipes 130 in the horizontal direction may be formed at regular intervals.

In addition, one side of the horizontal pipe 130 may be spatially connected to the flue (not shown) of the engine combustion chamber, the other side of the horizontal pipe 130 may be spatially connected to the exhaust port (not shown). Here, the configuration and connection method of the horizontal pipe 130, the flue and the exhaust port, etc. can be variously modified according to the needs of those skilled in the art, it is not limited to specific one.

Therefore, the combustion gas discharged from the engine combustion chamber is introduced into the horizontal pipe 130 through the flue, the waste heat of the combustion gas moving along the horizontal pipe 130 is supplied to the ballast tank (BT) side, the horizontal pipe 130 The combustion gas passing through may be discharged to the outside through the exhaust port.

In addition, the horizontal pipe 130 may be configured by inserting a separate metal pipe into the heat insulating material 100, or may be formed in the form of a direct passage to the heat insulating material (100). The method of forming the horizontal pipe 130 may be the same as the vertical pipe 140 and the connection pipe 160 to be described below.

Referring to FIG. 5, the vertical heat insulating material 110 and the side heat insulating material 120 may have a vertical pipe 140 formed at a predetermined interval in the vertical direction of the corresponding vessel.

In other words, in at least one of the upper surface insulating material 110 and the side insulating material 120, a plurality of vertical pipes 140 to spatially connect two horizontal pipes 130 adjacent to each other among the plurality of horizontal pipes 130. ) May be formed.

At this time, the vertical pipe 140 may be formed to be connected side by side in the vertical direction as shown in Figure 5 (b), may be formed to be staggered according to the needs of those skilled in the art.

Accordingly, the combustion gas discharged from the engine combustion chamber and introduced into the horizontal pipe 130 may be more uniformly diffused through the vertical pipe 140 and supply waste heat to the ballast tank BT.

Referring to FIG. 6, a space 150 may be formed between at least one of the upper surface insulating material 110 and the side insulating material 120 and the ballast tank BT.

The space part 150 may include the first space part 151 formed by forming the upper surface insulating material 110 to be spaced apart from the upper surface of the ballast tank BT by a predetermined distance as shown in FIG. 6A, and FIG. 6. As shown in (b) it may include a second space portion 151 formed by configuring the side insulation 120 to be spaced apart from the side of the ballast tank (BT) by a predetermined distance.

In addition, the space part 150 may be formed to be connected to connect the first space part 151 and the second space part 152 as shown in FIG.

Therefore, the heat insulation effect can be improved more by the space part 150 comprised between the heat insulating material 100 and the ballast tank BT.

Referring to FIG. 7, a connection pipe 160 for supplying combustion gas to the space part 150 may be further configured in at least one of the upper surface insulating material and the side insulating material.

In addition, the connection pipe 160 may be configured such that the vertical pipe 140 and the space 150 are connected as shown in FIG.

In addition, the connection pipe 160 may be configured such that the horizontal pipe 130 and the space 150 is connected as shown in FIG.

Therefore, the combustion gas discharged from the engine combustion chamber and introduced into the horizontal pipe 130 and the vertical pipe 140 may directly supply waste heat to the ballast tank BT through the connection pipe 160.

The horizontal pipe 130, the vertical pipe 140, and the connection pipe 160 described above are connected to an indoor space where crew members live rather than the flue of the engine combustion chamber, so that the heated indoor air of the ballast tank BT is connected. Although freezing may be prevented, it is preferable to use waste heat of the combustion gas for efficient use of energy.

Referring to FIG. 8, the ballast tank freezing prevention structure using the heat insulating material may further include a temperature sensor 200, a control module 300, and an open / close valve 400.

Temperature sensor 200 is for measuring the internal temperature of the ballast tank (BT) by height, it is shown in Figure 8 installed inside the ballast tank (BT), according to the type of temperature sensor 200 and the needs of those skilled in the art It may be installed outside the ballast tank BT.

Opening and closing valve 400 is configured between the flue and the cross pipe 130 of the engine combustion chamber, it can open and close the spatial connection state of the flue and cross pipe (130).

In addition, as shown in FIG. 8, the on / off valve 400 may be configured in plural numbers (reference numerals 401 to 406 in FIG. 8) corresponding to the plurality of horizontal pipes 131 to 136. Through the configuration, it is possible to individually open and close the connection of each cross pipe (131 to 136) and the year.

The control module 300 is electrically connected to the on / off valve 400 and the temperature sensor 200, and controls the plurality of on / off valves 401 to 406 based on the temperatures detected by the plurality of temperature sensors 200, respectively. can do.

In one embodiment, the control module 300, when the temperature detected by the temperature sensor 200 is below the freezing temperature, by opening and closing the valve 400 corresponding to the position of the temperature sensor 200 detected below the freezing temperature In addition, the year and the horizontal pipe (131 to 136) can be controlled to be spatially connected.

In other words, by intensively supplying the horizontal pipe 130 that requires the waste heat of the combustion gas supplied through the flue, it is possible to use energy more efficiently.

On the other hand, as mentioned in the description of Figure 2, it can be seen that the effect of the external cold air on the ballast tank BT, depending on the height of the sea level (SS).

Therefore, the ballast tank freezing prevention structure using the heat insulating material of the present invention, may further include a water level sensor (not shown) for detecting the height of the sea surface. Here, the water level sensor may be configured in plural at regular intervals corresponding to the height of the ballast waterline to the full waterline, the configuration and position of the water level sensor may be variously changed according to the type of water level sensor and the needs of those skilled in the art to be.

In addition, the control module 300 may open and close the valve 400 connected to the horizontal pipe 130 configured in a region higher than the height of the sea level detected by the water level sensor, and supply the combustion gas to the corresponding horizontal pipe 130. .

For example, when the height of the sea level is 'SS1', the on-off valve '401' can be opened, when the sea level is 'SS2', the on-off valves '401' to '403' can be opened, When the height of the sea level is 'SS3', the on-off valves '401' to '405' can be opened.

Therefore, in supplying the waste heat of the combustion gas supplied through the flue to the horizontal pipe 130, by intensively supplying the waste heat of the combustion gas to the region where cold air flows from the outside atmosphere, energy can be used more efficiently. It is.

In addition, the control module 300 compares the detection signals of the temperature sensor 200 and the water level sensor to complement the temperature sensor 200 and the water level sensor, and based on the comparison result, the control module 300 is located in an area higher than the height of the sea level. The opening and closing valve 400 configured to be connected to the horizontal pipe 130 configured at a height corresponding to the height of the temperature sensor configured to sense a temperature below the configured horizontal pipe or freezing point may be opened.

The ballast tank freezing prevention structure using the heat insulating material which concerns on this invention was demonstrated above. Such a technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and therefore the meaning of the claims. And all changes or modifications derived from the scope and equivalent concept thereof should be construed as being included in the scope of the present invention.

Improve the reliability and competitiveness of the ships and freight sectors, especially those that operate in polar regions.

Claims

An upper insulating material configured on an upper portion of the ballast tank; And

It includes a side heat insulating material configured between the ballast tank and the outer wall of the ship,

The side insulation material,

Ballast tank anti-icing structure using a heat insulating material, characterized in that connected to the top insulation and formed lower than the height of the ballast waterline of the vessel.
The method of claim 1,

In at least one of the upper surface insulating material and the side insulating material,

Ballast tank freezing structure using a heat insulating material, characterized in that a plurality of horizontal pipes are formed at predetermined intervals in the transverse direction.
The method of claim 2,

In at least one of the upper surface insulating material and the side insulating material,

Ballast tank freezing structure using a heat insulating material, characterized in that a plurality of vertical pipes are formed at predetermined intervals so as to spatially connect two horizontal pipes adjacent to each other of the plurality of horizontal pipes.
The method of claim 3, wherein

Ballast tank anti-freeze structure using the heat insulating material, characterized in that at least one of the top and side insulation is spaced apart from the ballast tank so that a space portion is formed between at least one of the top and side insulation and the ballast tank. .
The method of claim 4, wherein

In at least one of the upper surface insulating material and the side insulating material,

Ballast tank anti-icing structure using a heat insulating material, characterized in that a plurality of connecting pipes are formed to spatially connect the horizontal pipe or vertical pipe and the space.
The method according to any one of claims 1 to 5,

The horizontal pipe,

Ballast tank anti-icing structure using heat insulating material, characterized in that connected to the flue of the engine combustion chamber.
The method of claim 6,

A plurality of on / off valves configured between the flue and the horizontal pipe;

A plurality of temperature sensors configured in the ballast tank; And

It includes a control module electrically connected to the on-off valve and the temperature sensor,

The control module,

Ballast tank anti-icing structure using insulation, characterized in that when the temperature sensed by the temperature sensor is below the freezing temperature, the opening and closing valve to control the so that the flue and the cross pipe is spatially connected.
The method of claim 7, wherein

Further comprising a water level sensor for detecting the height of the sea level,

The control module,

Based on the height of the sea level detected by the water level sensor or the temperature detected by the temperature sensor,

Ballast tank icing using heat insulating material, characterized in that for opening the on-off valve configured to be connected to the horizontal pipe configured in the area higher than the height of the sea level or the height corresponding to the height of the temperature sensor that senses the temperature below the freezing point Resistant structure.