KR101399949B1 - Ballast tank freeze prevention structure using double bulkhead - Google Patents

Abstract

The present invention relates to a structure for preventing freezing of a ballast tank using double bulkheads. By blocking the inflow of outside cool air by using a double bulkhead having an internal space, the ballast tank of the ship operating in polar regions Thereby preventing freezing of the tank.
In particular, the present invention can maintain the temperature of the ballast tank above the freezing point by raising the temperature of the ballast tank by using the waste heat of the combustion gas discharged from the engine combustion chamber of the ship, without constituting a separate heating device.
Further, according to the present invention, the double partition wall is divided into a plurality of spaces, and the combustion gas supplied to each of the divided regions is controlled according to the temperature inside the double partition wall, the temperature inside the ballast tank, and the height of the sea surface, .
Therefore, it is possible to improve the reliability and competitiveness of ships operating in the shipping and cargo transportation sectors, especially in polar regions.

Description

[0001] The present invention relates to a ballast tank freezing prevention structure using a double bulkhead,

The present invention relates to a structure for preventing freezing of a ballast tank using double bulkheads, and more particularly, to a structure for preventing freezing of a ballast tank of a ship operating in an polar region by preventing double- .

Particularly, according to the present invention, the waste heat of the combustion gas discharged from the engine combustion chamber of the ship is supplied to the space portion of the double partition wall through the simple structure change to increase the temperature of the ballast tank, thereby increasing the temperature of the ballast tank of the ship, Of the ballast tank is prevented from being frozen.

In general, a ship is provided with a ballast tank (BT) as shown in FIG. 1 to adjust the draft and trim of the ship according to the loading state of the cargo, and the ballast tank (BT) V) balance and stability.

For example, a cargo ship carrying cargo will operate in ballast tanks with seawater to ensure efficient operation, balance and stability of the propeller and rudder in the water if the cargo is not sufficient. In this way, the water contained in the ballast tank is called ballast water.

In particular, in the case of ships carrying resources such as LNG, crude oil and iron ore as cargo, the space inside the ship is divided into two parts in order to prevent the outflow of cargo in the event of an external collision of the ship, The inner space is used as a cargo tank, and the outer space is used as a ballast tank.

Thus, since the ship's ballast tank is installed close to the ship's outer wall (VO), when the ship is traveling in the polar region, if the temperature of the ballast water in the ballast tank falls below minus 2 degrees, If the ballast water is frozen, the ballast tank will fail to function, posing a danger to the ship.

Particularly, as shown in FIG. 2, since the external temperature (sea water temperature) is higher than the freezing point in the region R2 lower than the sea surface SS, the influence on the freezing of the ballast tank BT is small, The outside temperature (atmospheric temperature) is much lower than the freezing point in the region R1 which is higher than the freezing point R1, and such outside air flows into the ship and causes the ice phenomenon in the ballast tank BT.

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

In order to solve this problem, Korean Patent Registration No. 10-0952911 entitled " Ballast Water Freezing Prevention Device for Ship " (hereinafter referred to as prior art), there is a prior art in which a storage tank for evaporating seawater, It is necessary to provide a storage tank for evaporating seawater on the deck of the ship. Therefore, there is a problem that the space utilization of the deck is lowered and the prior art can not be applied to a ship which needs to use the deck there was.

Korean Registered Patent No. 10-0952911 " Ballast water freezing prevention device for ship "

In order to solve the above-mentioned problems, the present invention provides a double partition wall having a space between an outer wall of a hull and a ballast tank and a space above the ballast tank to block the inflow of outside cool air, And to provide a structure for preventing freezing of a ballast tank using a double bulkhead.

Particularly, according to the present invention, the waste heat of the combustion gas discharged from the engine combustion chamber of the ship is supplied to the space portion of the double partition wall through the simple structure change to increase the temperature of the ballast tank, Of the total volume of the ballast tank.

Further, according to the present invention, the double partition wall is divided into a plurality of spaces, and the combustion gas supplied to each of the divided regions is controlled according to the temperature inside the double partition wall, the temperature inside the ballast tank, and the height of the sea surface, The present invention provides a structure for preventing freezing of a ballast tank using double bulkheads.

In order to achieve the above object, the present invention provides a structure for preventing freezing of a ballast tank using double bulkheads, wherein a space portion is formed by an inner bulkhead formed on the ballast tank side and an outer bulkhead spaced from the inner bulkhead by a predetermined distance Wherein the double diaphragm comprises: an upper double diaphragm formed on an upper portion of the ballast tank; And a side double-layered partition wall formed between the ballast tank and an outer wall of the ship, wherein the upper double-side bulkhead and the side double-sided wall are configured such that the respective space portions are connected to each other to seal the lower double- Is lower than the height of the ballast waterline.

Further, the space portion of the double partition wall may be spatially connected to the flue of the engine combustion chamber.

Also, at least one of the upper surface double barrier ribs and the side double barrier ribs may be formed with a plurality of partition ribs that divide the space portion into a plurality of divided spaces at predetermined intervals in the lateral direction.

At least one of the upper surface double-side wall and the side double-wall may have an opening / closing door for opening / closing the spatial connection of the flue and the divided space to the flue side end of the divided space.

At least one partition wall temperature sensor installed inside the partition space; And a control module electrically connected to the opening / closing door and the partition wall temperature sensor, wherein the control module controls the opening / closing door of the partition space provided with the partition wall temperature sensor when the temperature sensed by the partition wall temperature sensor is below the freezing temperature It can be controlled to open.

A plurality of ballast temperature sensors installed inside the ballast tank; And a control module electrically connected to the opening / closing door and the ballast temperature sensor, wherein the control module controls the opening / closing door and the ballast temperature sensor so that when the temperature sensed by the ballast temperature sensor is below the freezing temperature, So that the door can be controlled to open.

The control module may further include a water level sensor for sensing the height of the sea surface, and the control module may control the opening and closing door of the divided space formed at a height corresponding to the height of the sea level detected by the water level sensor.

According to the above-mentioned solution, the present invention has the effect of preventing the freezing of the ballast tank of the ship operating in the polar regions by simple structural change of the double bulkhead or the like.

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

In addition, without using a separate heating device, the temperature of the ballast tank can be maintained using the waste heat of the combustion gas discharged from the engine combustion chamber, so that the energy can be efficiently used.

Particularly, the present invention divides the double partition wall into a plurality of spaces, and controls the combustion gas supplied to each of the divided regions according to the temperature inside the double partition wall, the temperature inside the ballast tank, and the height of the sea surface, As shown in FIG.

Therefore, it is possible to improve the reliability and competitiveness of ships operating in the shipping and cargo transportation sectors, especially in polar regions.

1 is a view for explaining a ballast tank structure of a general ship.
2 is a view for explaining the icing phenomenon of the ballast tank.
3 is a structural view illustrating an embodiment of a ballast tank freezing prevention structure using double bulkheads according to the present invention.
FIG. 4 is a block diagram for explaining another embodiment of a ballast tank freezing preventing structure using a double bulkhead according to the present invention.
FIG. 5 is a block diagram for explaining another embodiment of a ballast tank icing prevention structure using double bulkheads according to the present invention.
6 is a block diagram for explaining another embodiment of a ballast tank icing preventing structure using double bulkheads according to the present invention.
FIG. 7 is a block diagram for explaining another embodiment of a ballast tank freezing prevention structure using a double bulkhead according to the present invention.
FIG. 8 is a block diagram for explaining another embodiment of a ballast tank icing prevention structure using double bulkheads according to the present invention.

The ballast tank anti-freezing structure using the double bulkhead according to the present invention can be variously applied. In the following, the most preferred embodiments will be described with reference to the accompanying drawings.

3 is a structural view illustrating an embodiment of a ballast tank freezing prevention structure using double bulkheads according to the present invention.

Referring to FIG. 3, in the ballast tank freezing prevention structure using the double partitions, the double partition 100 is configured to surround the side and top of the ballast tank BT.

The double bulkhead 100 includes upper double bulkheads 110 and upper and lower double bulkheads 120 formed between the ballast tanks BT and the outer walls VO of the ship do.

The upper and lower double bulkheads 110 and 120 are respectively formed with inner side walls 111 and 121 formed on the side of the ballast tank BT and spaced apart from the inner side walls 111 and 112 by a predetermined distance And a space 113 (123) formed by an inner side wall 112 (122) and an inner side wall 111 (112) and an outer side wall 112 (122).

In addition, the upper surface double barrier ribs 110 and the side double barrier ribs 120 are configured such that the respective space portions 113 and 123 are connected to each other to be hermetically sealed.

In particular, the lower longitudinal height of the side double-wall 120 is formed to be lower than the height of the ship's ballast waterline Lmin. Here, the term "ballast waterline" is the relative term of the load waterline and refers to the waterline in a state where the cargo is not loaded except for the facilities of the ship concerned.

Therefore, if the lateral double bulkhead 120 is formed to extend from the lower portion of the ballast water line Lmin to the upper double bulkhead 110, it is possible to prevent freezing of the ballast tank BT regardless of the cargo load of the ship.

FIG. 4 is a block diagram for explaining another embodiment of a ballast tank freezing preventing structure using a double bulkhead according to the present invention. Here, FIG. 4 (a) is a structural view as seen from the front, and FIG. 4 (b) is a structural view as viewed from a side, and is also the same also in FIG. 6 and FIG.

Referring to FIG. 4, the upper and lower double barrier ribs 110 and 120 may have a partition 130 in the longitudinal direction of the ship.

In other words, a plurality of partition ribs 130 may be formed at predetermined intervals in the lateral direction in at least one of the space portions 113 and 123 of the top surface double barrier rib 110 and the side double barrier ribs 120.

One side of the space portion of the double partition wall 100 including the top side double barrier ribs 110 and the side double side walls 120 can be spatially connected to the flame D of the engine combustion chamber and the other side of the space portion can be connected to the exhaust port (Not shown). Here, the configuration and connection method of the double partition wall 100, the flue D, and the exhaust port can be variously modified according to the needs of those skilled in the art, and thus are not limited to specific ones.

Accordingly, the combustion gas discharged from the engine combustion chamber flows into the space portions 113 and 123 of the upper and lower double partition walls 110 and 120 through the flame D, and the space portions 113 and 123, The combustion gas passing through the space portions 113 and 123 can be discharged to the outside through the exhaust port.

The space portions 113 and 123 of the upper and lower double bulkheads 110 and 120 described above are connected to the indoor space in which the crews living in the engine combustion chamber are living, Although it is possible to prevent freezing of the ballast tank (BT) by air, it is preferable to use waste heat of the combustion gas for efficient use of energy.

FIG. 5 is a block diagram for explaining another embodiment of a ballast tank icing prevention structure using double bulkheads according to the present invention.

5, the ballast tank freezing prevention structure using the double partitions is formed by dividing the partition space (not shown) divided into a plurality of spaces by the partition wall 130, The opening and closing door 140 can be formed.

The opening / closing door 140 can open / close the spatial connection of the flame D and the divided space by the operation of the user or the control module 300 shown in Fig.

5, the opening and closing door 140 includes a plurality of partitioned spaces (141 'to 146' in FIG. 5) corresponding to a plurality of divided spaces in which the space portion 123 of the side double- But it goes without saying that the same holds true for the upper surface double barrier rib 110. [

Therefore, the waste heat of the combustion gas supplied through the flue D can be concentratedly supplied to the required divided space, so that the energy can be used more efficiently.

6 is a block diagram for explaining another embodiment of a ballast tank icing preventing structure using double bulkheads according to the present invention.

Referring to FIG. 6, the ballast tank anti-freeze structure using double bulkheads may further include a bulkhead temperature sensor 210 and a control module 300.

A plurality of partition wall temperature sensors 210 are provided for each partition space of the side double barrier ribs 120 to measure the internal temperature of each partition space. The reason why no barrier temperature sensor 210 is provided on the upper surface double barrier rib 110 is that the temperature inside the upper surface double barrier rib 110 is approximated by the barrier temperature sensor 210 formed on the uppermost portion of the side double barrier ribs 120 And it is needless to say that the partition wall temperature sensor 210 may be installed in the upper double barrier rib 110 according to the needs of those skilled in the art.

The control module 300 is electrically connected to the opening and closing door 140 and the partition wall temperature sensor 210 and controls the plurality of the opening and closing doors 141 to 146 on the basis of the temperatures sensed by the plurality of partition wall temperature sensors 210 Respectively.

In one embodiment, when the sensed temperature of the partition wall temperature sensor 210 is below the freezing temperature, the control module 300 controls the opening / closing door (not shown) installed in the partition space corresponding to the position of the partition wall temperature sensor 210, (140) is opened.

As a result, the waste heat of the combustion gas supplied through the flue D can be concentratedly supplied to the required divided space, so that the energy can be utilized more efficiently.

FIG. 7 is a block diagram for explaining another embodiment of a ballast tank freezing prevention structure using a double bulkhead according to the present invention.

Referring to FIG. 7, the ballast tank freeze prevention structure using double bulkheads may include a plurality of ballast temperature sensors 220 installed in the ballast tank BT.

The ballast temperature sensor 220 is provided for measuring the internal temperature of the ballast tank BT by height. In FIG. 7, the ballast temperature sensor 220 is installed inside the ballast tank BT. However, the type of the ballast temperature sensor 220, And may be installed outside the ballast tank BT in accordance with the ballast tank BT. Here, the ballast temperature sensor 220 may be electrically connected to the control module 300.

The control module 300 can control the opening and closing door 140 of the divided space formed at the height corresponding to the ballast temperature sensor 220 to open when the temperature sensed by the ballast temperature sensor 220 is below the freezing temperature.

On the other hand, as mentioned in the description of FIG. 2, it can be seen that the influence of the external cold air on the ballast tank BT varies depending on the height of the sea surface SS.

Accordingly, 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 sensing the height of the sea level. Here, the water level sensors may be composed of a plurality of water level sensors corresponding to the height of the load water line from the ballast waterline at predetermined intervals, and the configuration and position of the water level sensor may be variously changed according to the type of the water level sensor and requirements of those skilled in the art to be.

The control module 300 can control the opening / closing door 140 of the divided space formed at the height corresponding to the height of the sea level detected by the water level sensor.

FIG. 8 is a block diagram for explaining another embodiment of a ballast tank icing prevention structure using double bulkheads according to the present invention.

Referring to FIG. 8, when the height of the sea surface is 'SS1', the control module 300 can open / close the doors '141' and '142'. When the height of the sea surface is 'SS2' 141 'to' 144 ', and when the height of the sea surface is' SS3', the open / close doors 141 'to 145' can be opened.

Therefore, in supplying the waste heat of the combustion gas supplied through the flue D to the divided space of the side double-wall 120, the waste heat of the combustion gas is intensively supplied to the region into which cool air flows from the outside air, Energy can be used more efficiently.

The control module 300 also receives the sensing signals of the septum temperature sensor 210, the ballast temperature sensor 220 and the water level sensor to complement the septum temperature sensor 210, the ballast temperature sensor 220 and the water level sensor And the opening and closing door 140 installed in the divided space can be opened based on the comparison result.

The ballast tank anti-freezing structure using the double bulkhead according to the present invention has been described above. It will be understood by those skilled in the art that the technical features of the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Therefore, it is to be understood that the embodiments described above are intended to be illustrative, and not restrictive, in all respects, and that the scope of the invention is indicated by the appended claims rather than the foregoing description, And all equivalents and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

V: Vessel VO: Hull outer wall
BT: ballast tank SS: sea level
D: Year
100: double partition wall
110: upper surface double barrier rib 111: inner barrier rib
112: outer barrier rib 113:
120: side double barrier ribs 121: inner barrier ribs
122: outer barrier rib 123:
130: partitioned partition wall 140: opening / closing door
210: bulkhead temperature sensor 220: ballast temperature sensor
300: control module

Claims (7)

A ballast tank freezing prevention structure using a double bulkhead configured such that a space is formed by an inner partition wall formed on the ballast tank side and an outer partition wall spaced from the inner partition wall by a predetermined distance,
The double-
An upper double bulkhead formed on the upper portion of the ballast tank; And
And a side double-walled portion formed between the ballast tank and the outer wall of the ship,
Wherein the upper face double partition wall and the side double barrier wall are configured such that respective space portions are connected to each other to be hermetically closed,
The lower longitudinal height of the side double-wall is lower than the height of the ship's ballast waterline,
At least one of the upper face double-wall and the side double-
And a plurality of divided partitions dividing the space into a plurality of divided spaces are formed at regular intervals in the lateral direction.
The method according to claim 1,
The space portion of the double-
Wherein the ballast tank is spatially connected to the cylinder of the engine combustion chamber.
delete The method according to claim 1,
At least one of the upper face double-wall and the side double-
Wherein the open end of the split space is formed at the end of the flushing side of the divided space to open and close the spatial connection of the flue and the divided space.
5. The method of claim 4,
At least one partition wall temperature sensor installed inside the partition space; And
And a control module electrically connected to the opening / closing door and the partition wall temperature sensor,
The control module includes:
Wherein the controller controls the opening / closing door of the divided space provided with the partition temperature sensor to open when the temperature detected by the partition temperature sensor is lower than the freezing temperature.
5. The method of claim 4,
A plurality of ballast temperature sensors installed inside the ballast tank; And
And a control module electrically connected to the opening / closing door and the ballast temperature sensor,
The control module includes:
Wherein the controller controls the opening / closing door of the divided space formed at the height corresponding to the ballast temperature sensor to open when the temperature sensed by the ballast temperature sensor is below the freezing temperature.
The method according to claim 5 or 6,
Further comprising a water level sensor for sensing the height of the sea level,
The control module includes:
And controls the opening / closing door of the divided space formed at the height corresponding to the height of the sea level detected by the level sensor to open.

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