KR101497423B1 - Offshore Structure - Google Patents

Abstract

According to an embodiment of the present invention, provided is a marine structure which can supply balance water by regular flow rate even without driving a pump. The marine structure according to an embodiment of the present invention may comprise: a hull; a balance water inlet part formed on one side of the hull and making sea water flow in to supply the sea water as the balance water; a balance water tank installed in the hull, receiving the balance water from the balance water inlet part and storing the balance water; an assistance unit receiving the balance water from the balance water inlet part and supplying the balance water to the balance water tank; and a pneumatic unit supplying high pressure air to the assistance unit to press the balance water stored within the assistant unit and to supply the balance water to the balance water tank.

Description

Offshore Structure {Offshore Structure}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an offshore structure, and more particularly, to an offshore structure capable of supplying a ballast water at a uniform flow rate without driving a pump.

Generally, at least one ballast tank is installed in the ship, and the ballast tank controls the amount of ballast water flowing into the ballast tank according to the amount of cargo to be shipped, And maintain a constant draft. These ballast water usually uses seawater and is discharged into the sea of the destination after being filled into the ballast tank at the sea of the starting point. However, when the ballast water is directly discharged to the sea, it can cause problems such as environmental pollution and changes in the marine ecosystem, and microorganisms and foreign substances contained in the ballast water are treated after water treatment. In other words, the ballast water is stored in the ballast water tank in the water treatment state, and is discharged without any additional water treatment at the time of discharge.

On the other hand, to reduce the driving energy of the pump for pumping the ballast water, the ballast water may be transferred using gravity. However, when ballast water is transferred using gravity, the flow rate of the ballast water may not be constantly transferred depending on the sea condition. Therefore, water must be supplied at a constant flow rate to prevent the water treatment operation from being performed properly in a ballast water treatment apparatus that normally operates, thereby causing problems such as environmental pollution and marine ecosystem change.

Korean Patent Publication No. 10-2011-0035896 2011. 04. 06

SUMMARY OF THE INVENTION It is an object of the present invention to provide an offshore structure capable of supplying a ballast water at a uniform flow rate without driving a pump.

The technical objects of the present invention are not limited to the technical matters mentioned above, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an offshore structure comprising: a hull; a ballast inflow part formed on a side of the hull for supplying seawater to the ballast water; An auxiliary unit for receiving and storing the ballast water from the ballast water inflow portion and storing the ballast water supplied from the ballast water inflow portion to the ballast water tank; And a pneumatic unit that pressurizes the ballast water stored in the auxiliary unit and supplies the ballast water to the ballast tank.

The auxiliary unit can supply the ballast water to the ballast water tank if the flow rate of the ballast water supplied from the ballast water inflow portion to the ballast water tank is not more than the reference flow rate.

And an ozone injection unit positioned at a front end of the ballast water tank and injecting ozone into the ballast water flowing into the ballast water tank.

And a flow sensor for measuring a flow rate of the ballast water flowing into the ballast tank, wherein the ozone injection unit can inject the ozone in conjunction with the flow sensor.

The auxiliary unit includes a buffer tank for storing the ballast water, an air supply pipe connected to the buffer tank for supplying the air, an auxiliary supply pipe for connecting the buffer tank and the ballast water tank, And an exhaust pipe for exhausting the air.

And a control valve for opening and closing the auxiliary supply pipe, wherein the buffer tank is maintained at a high pressure and the control valve is adjusted to supply the ballast water to the ballast water tank.

The auxiliary unit includes an actuator that operates with the pressure of the air, a cylinder unit that receives the ballast water, and a piston unit that is connected to the actuator and is located inside the cylinder and presses the ballast water. When the actuator operates The piston may be slidably moved to suck the ballast water into the cylinder or to discharge the ballast water to the ballast tank.

According to the present invention, even when the ballast water is fed using gravity without driving the pump, the ballast water can be fed at a uniform flow rate. Therefore, the water treatment operation can be smoothly performed from the ozone injection unit.

1 is a block diagram showing an ocean structure according to an embodiment of the present invention.
FIGS. 2 to 4 are operation diagrams for explaining the operation of the marine structure of FIG. 1. FIG.
5 is an operation diagram illustrating an operation process of an auxiliary unit according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the marine structure according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5. FIG.

1 is a block diagram illustrating an offshore structure according to an embodiment of the present invention.

An offshore structure 1 according to an embodiment of the present invention is a structure capable of supplying ballast water at a uniform flow rate without driving a pump and may include various ships and structures that maintain balance and draft using ballast water have. Here, the equilibrium number means general sea water. The offshore structure 1 can transfer the ballast water at a uniform flow rate even when the ballast water is transported by gravity without driving the pump. Therefore, the water treatment operation can be smoothly performed from the ozone injection unit 60, and the occurrence of environmental pollution, marine ecosystem change, and the like can be prevented.

Hereinafter, the marine structure 1 will be described in detail with reference to Fig.

An offshore structure 1 according to the present invention includes a hull 10, a ballast water inflow section 20 into which the ballast water flows, a ballast water tank 30 that stores the ballast water, And a pneumatic unit (50) for providing high pressure air to the auxiliary unit (40).

The hull 10 constitutes the main body of the offshore structure 1 and has a structure floating on the sea. At least one ballast water inlet (20) is formed in the hull (10).

The ballast water inflow section 20 is formed on one side of the ship 10 by introducing seawater into the ballast water. In other words, the ballast water inflow section 20 is formed completely through one side of the hull 10, and the sea water introduced into the ballast water inflow section 20 is used as ballast water. The ballast water inflow part 20 is disposed below the hull 10 and is located on the side or bottom of the hull 10 and the inflowing ballast water is supplied to the ballast tank 30 by the main supply pipe 21 .

The main supply pipe 21 is a hollow pipe having a constant diameter, one side connected to the ballast water inlet 20 and the other side connected to the ballast tank 30. The main supply pipe 21 provides a passage through which the ballast water flowing into the ballast water inflow section 20 is supplied to the ballast water tank 30. The main supply pipe 21 is provided with a first main supply valve 211, A two-week supply valve 212 is provided to control the flow of the ballast water. The first main supply valve 211 is disposed proximate to the ballast water inlet 20 and the second main supply valve 212 is disposed away from the ballast water inlet 20. In other words, the ballast water flowing into the ballast water inflow part 20 is supplied to the ballast water tank 30 through the first main supply valve 211 and the second main supply valve 212 in order.

The ballast water tank 30 receives and stores the ballast water from the ballast water inflow part 20. At least one ballast water tank 30 is installed in the inside of the ship. At this time, the ballast water tank 30 is disposed close to the bottom surface of the ship 10 and above the ballast water inflow part 20. [ Therefore, the ballast water flowing into the ballast water inflow part 20 can be supplied to the ballast water tank 30 by a hydraulic pressure difference without a separate pump drive. The ballast tank 30 adjusts the amount of ballast water stored in accordance with the amount of cargo shipped to the offshore structure 1 so that the balance and draft of the offshore structure 1 is maintained. That is, when the amount of cargo to be shipped is large, the amount of ballast water stored in the ballast water tank 30 is reduced, and conversely, when the amount of cargo to be shipped is small, the amount of ballast water to be stored is increased.

On the other hand, an auxiliary unit 40 is provided on one side of the hull 10. The auxiliary unit 40 receives the ballast water from the ballast water inflow part 20 and supplies the ballast water to the ballast water tank 30 so that the flow rate of the ballast water supplied to the ballast water tank 30 through the main supply pipe 21 . In other words, when the flow rate of the ballast water supplied from the ballast water inflow section 20 to the ballast water tank 30 is less than the reference flow rate, the auxiliary unit 40 supplies the ballast water to the ballast water tank 30, To exceed the reference flow rate. Here, the reference flow rate means a minimum flow rate for preventing the ballast water stored in the ballast water tank 30 from flowing backward. This auxiliary unit 40 includes a buffer tank 41, an air supply pipe 42, an auxiliary supply pipe 43, and an exhaust pipe 44.

The buffer tank 41 stores the ballast water, and one side thereof is connected to the ballast water inflow portion 20. That is, the buffer tank 41 receives the ballast water from the ballast water inflow unit 20 and temporarily stores the ballast water therein. The buffer tank 41 and the ballast water inflow section 20 are connected by an inflow pipe 45 and at least one inflow valve 451 is provided on the inflow pipe 45 to control the flow of the ballast water . The buffer tank 41 is disposed above the ballast water inflow section 20 and below the ballast water tank 30. Therefore, the ballast water introduced into the ballast water inflow section 20 can be supplied to the buffer tank 41 by a hydraulic pressure difference without a separate pump drive. An air supply pipe 42 is connected to one side of the buffer tank 41.

The air supply pipe 42 supplies air into the buffer tank 41 so that one side is connected to the buffer tank 41 and the other side is connected to a pneumatic unit 50 to be described later. The air supply pipe 42 has an end connected to the upper side of the buffer tank 41 and at least one air supply valve 421 is provided on the air supply pipe 42 to control the flow of supplied air.

The air pressure unit 50 supplies high pressure air to the auxiliary unit 40 to pressurize the ballast water stored in the auxiliary unit 40 and supply the ballast water to the ballast water tank 30. By the air supply pipe 42, And is connected to the tank 41. However, the pneumatic unit 50 is not limited to providing high-pressure air, and can be variously modified. For example, the pneumatic unit 50 may compress the waste gas generated from various devices installed in the offshore structure 1 and provide it to the buffer tank 41. The pneumatic unit 50 compresses the air or the waste gas to atmospheric pressure or higher and supplies the compressed air or the waste gas to the buffer tank 41 through the air supply pipe 42. Accordingly, the ballast water stored in the buffer tank 41 can be pressurized by air or waste gas and supplied to the ballast water tank 30 through the auxiliary supply pipe 43.

The auxiliary supply pipe 43 is a hollow pipe having a constant diameter such as the main supply pipe 21 and connects the buffer tank 41 and the ballast tank 30. In other words, the auxiliary supply pipe 43 has one side connected to the lower side of the buffer tank 41 and the other side connected to one side of the main supply pipe 21, for example, the first main supply valve 211 and the second main supply And supplies the ballast water stored in the buffer tank 41 to the ballast tank 30 by being connected between the valves 212. A control valve 431 is provided on the auxiliary supply pipe 43 and the control valve 431 opens and closes the auxiliary supply pipe 43 to control the flow of the ballast water. Since the inside of the buffer tank 41 is maintained at a high pressure by the pneumatic unit 50, the ballast water can be supplied to the ballast tank 30 by adjusting the control valve 431. [ When the ballast water flows through the auxiliary supply pipe 43, the first main supply valve 211 of the main supply pipe 21 is closed. That is, the ballast water stored in the buffer tank 41 is supplied to the ballast tank 30 through the control valve 431 of the auxiliary supply pipe 43 and the second main supply valve 212 of the main supply pipe 21 in this order .

An exhaust pipe 44 is provided on one side of the buffer tank 41. The exhaust pipe 44 discharges the air inside the buffer tank 41, one side of which is connected to the upper side of the buffer tank 41 and the other side is exposed to the atmosphere. At this time, the exhaust pipe 44 is disposed above the water line of the hull 10 so that the air can be smoothly discharged into the atmosphere. The exhaust pipe 44 is opened when the ballast water is injected into the buffer tank 41. That is, by discharging the air inside the buffer tank 41 to the outside, the ballast water is injected by the pressure difference without driving the pump. At least one exhaust valve 441 is provided on the exhaust pipe 44 to control the flow of the exhausted air so that the pressure inside the buffer tank 41 can be kept constant. For example, when the pressure inside the buffer tank 41 is lowered, the air supply valve 421 of the air supply pipe 42 is opened to supply air. On the contrary, when the pressure inside the buffer tank 41 becomes high, And the exhaust valve 441 of the exhaust pipe 44 is opened to exhaust air. The air supply pipe 42 and the exhaust pipe 44 open and close the air supply valve 421 and the exhaust valve 441 in cooperation with the pressure sensor 46 provided at one side of the buffer tank 41.

On the other hand, an ozone injection unit 60 is provided at the front end of the ballast water tank 30. The ozone injection unit 60 injects ozone into the ballast water flowing into the ballast water tank 30 and is connected to the main supply pipe 21 by the ozone injection pipe 61. That is, the ozone injection pipe 61 is connected to one side of the ozone injection unit 60 and the other side is connected to one side of the main supply pipe 21, for example, the second main supply valve 212 and the ballast tank 30 so that ozone is injected into the ballast water supplied to the ballast water tank 30. At least one ozone injection valve 611 is provided on the ozone injection pipe 61 to control the injection of ozone.

By injecting ozone into the ballast water supplied to the ballast water tank 30, the ballast water and ozone are stored together in the ballast water tank 30, thereby sterilizing various microorganisms contained in the ballast water. Therefore, there is an advantage that a separate water treatment operation is unnecessary when discharging the ballast water, thereby saving cost and time. The ozone injection unit 60 is disposed at the front end of the ballast water tank 30 and above the ballast water tank 30. Therefore, the ozone contained in the ozone injection unit 60 can be supplied to the main supply pipe 21 by gravity without a separate pump drive. The ozone injection unit 60 injects ozone in conjunction with the flow rate sensor 62.

The flow sensor 62 measures the flow rate of the ballast water flowing into the ballast water tank 30 and is installed on one side of the main supply pipe 21. When the flow rate of the ballast water measured from the flow sensor 62 exceeds the reference flow rate, the ozone injection unit 60 opens the ozone injection valve 611 to inject ozone. On the other hand, . Therefore, when the flow rate of the ballast water is equal to or smaller than the reference flow rate, the ballast water stored in the ballast tank 30 and the ozone can be prevented from flowing back together and being discharged to the sea.

A discharge pipe (70) is installed at one side of the ballast water tank (30). The discharge pipe 70 is a hollow pipe having a constant diameter and provides a passage for discharging the ballast water stored in the ballast tank 30 to the sea. The discharge pipe 70 is disposed below the ballast water tank 30 and at least one discharge valve 701 is installed on the discharge pipe 70 to control the flow of the discharged seawater. As described above, since the ballast water stored in the ballast water tank 30 is subjected to sterilization treatment of various microorganisms by ozone, a separate water treatment operation is omitted in discharging the ballast water.

Hereinafter, the operational process of the offshore structure 1 will be described in more detail with reference to FIGS. 2 to 4. FIG.

FIGS. 2 to 4 are operation diagrams for explaining the operation of the marine structure of FIG. 1. FIG.

The marine structure 1 according to the present invention can transport the ballast water at a uniform flow rate even when the ballast water is transported without driving the pump. Therefore, the water treatment operation can be smoothly performed from the ozone injection unit 60, and the occurrence of environmental pollution, marine ecosystem change, and the like can be prevented.

2 (a) and 2 (b) are views showing a state where the ballast water is supplied to the ballast water tank 30 through the main supply pipe 21.

2 (a), when the flow rate of the ballast water measured by the flow rate sensor 62 provided on the main supply pipe 21 exceeds the reference flow rate, the ballast water is supplied through the main supply pipe 21, The ballast water is supplied to the tank (30).

Since the ballast water inflow portion 20 is disposed below the hull 10, the seawater, that is, the ballast water can flow smoothly into the ballast water inflow portion 20. The inflowing ballast flows to the main supply pipe 21, and the flow rate sensor 62 provided on the main supply pipe 21 measures the flow rate of the flowing ballast water. When the flow rate measured by the flow rate sensor 62 exceeds the reference flow rate, the first main supply valve 211 and the second main supply valve 212 are continuously opened to supply the ballast water to the ballast tank 30 . At this time, the ozone injection unit 60 opens the ozone injection valve 611 to inject ozone into the ballast water supplied to the ballast water tank 30 through the ozone injection pipe 61, and the ballast water and ozone And is stored in the ballast water tank 30.

The water surface of the ballast water stored in the ballast water tank 30 can be disposed in the same manner as the sea water surface disposed on the outer side of the hull 10 and as the ballast water is stored in the ballast water tank 30, It sinks below sea level. When the ballast water is filled in the ballast water tank 30, as shown in FIG. 2 (b), the ship 10 sinks close to the waterline, so that the offshore structure 1 can maintain balance and draft have. The control valve 431, the exhaust valve 441, the inflow valve 451, and the discharge valve 701 are disposed in the buffer tank 41 in a state in which the ballast water is full. Are disposed in a closed state.

3 (a) and 3 (b) are views showing a state where the ballast water is supplied to the ballast water tank 30 through the auxiliary supply pipe 43.

3 (a), when the flow rate of the ballast water measured by the flow rate sensor 62 provided on the main supply pipe 21 is equal to or smaller than the reference flow rate, the ballast water is supplied through the auxiliary supply pipe 43, (30).

The ballast water flowing into the ballast water inflow section 20 flows into the main supply pipe 21. When the flow rate of the ballast water measured by the flow sensor 62 is equal to or lower than the reference flow rate, The valve 211 is closed and the control valve 431 of the auxiliary supply pipe 43 is opened. At this time, the air supply valve 421 of the air supply pipe 42 is also opened so that high pressure air is supplied from the air pressure unit 50 to the buffer tank 41. Therefore, the ballast water stored in the buffer tank 41 is pressurized by the high-pressure air to flow into the auxiliary supply pipe 43, and passes the control valve 431 and the second main supply valve 212 in order And is supplied to the ballast water tank 30. The ozone injection unit 60 injects ozone into the ballast water supplied to the ballast water tank 30 through the ozone injection pipe 61, and the ballast water and ozone are stored together in the ballast tank 30.

The amount of ballast water stored in the ballast tank 30 is increased by the amount of the ballast water stored in the buffer tank 41, as shown in FIG. 3 (b). At this time, the exhaust valve 441, the inflow valve 451, and the discharge valve 701 are closed.

4 (a) and 4 (b) are views showing a state where the ballast water is supplied to the buffer tank 41 through the inflow pipe 45.

4 (a), when the ballast water stored in the buffer tank 41 is supplied to the ballast water tank 30, the ballast water is supplied to the buffer tank 41 through the inflow pipe 45, To supply the ballast water.

The first main supply valve 211, the second main supply valve 212 and the control valve 431 are closed and only the inflow valve 451 is opened when the buffer tank 41 receives the ballast water. Therefore, the ballast water flowing into the ballast water inflow section 20 flows into the inflow pipe 45 and is stored in the buffer tank 41. At this time, the exhaust valve 441 of the exhaust pipe 44 is opened so that the ballast water can flow into the buffer tank 41 more smoothly.

When the ballast water is filled in the buffer tank 41, the hull 10 is further submerged below the sea level by the amount of the ballast water stored in the buffer tank 41, as shown in FIG. 4 (b) . At this time, the air supply valve 421, the ozone injection valve 611, and the discharge valve 701 are also disposed in a closed state.

When the flow rate of the ballast water flowing through the main supply pipe 21 is equal to or less than the reference flow rate, the offshore structure 1 repeats the steps (a) and (b) To supply the ballast water to the ballast water tank 30.

Hereinafter, with reference to Fig. 5, the auxiliary unit 40a according to another embodiment of the present invention will be described in detail.

5 is an operation diagram illustrating an operation process of an auxiliary unit according to another embodiment of the present invention.

The auxiliary unit 40a according to another embodiment of the present invention includes an actuator 47 that operates with pneumatic pressure instead of the buffer tank 41, a cylinder unit 48 that receives the ballast water, and a piston unit 49 that pressurizes the ballast water ). The auxiliary unit 40a according to another embodiment of the present invention is substantially similar to the above embodiment except that it includes the actuator 47 and the cylinder part 48 and the piston part 49 instead of the buffer tank 41. [ same. Accordingly, the description of the remaining components will be replaced by the foregoing description, unless otherwise noted.

The auxiliary unit 40a includes an actuator 47, a cylinder portion 48, and a piston portion 49. [

The actuator 47 operates by the air pressure, and one side is connected to the air supply pipe 42 and the other side is connected to the exhaust pipe 44. The air supply pipe 42 and the exhaust pipe 44 are arranged to face each other in the actuator 47 while the air supply pipe 42 is disposed above the actuator 47 and the exhaust pipe 44 is disposed below the actuator 47 do. The air supply pipe 42 and the exhaust pipe 44 are connected to each other at the front and the rear of the actuator 47. A pair of air supply pipes 42 are provided with a first air supply valve 421a and a second air supply 421a, A valve 421b and a first exhaust valve 441a and a second exhaust valve 441b are disposed on the pair of exhaust pipes 44, respectively. A cylinder portion 48 is provided in parallel with the actuator 47.

The cylinder portion 48 is a place where the ballast water is received, and plays the same role as the buffer tank 41 described above. The cylinder part 48 is connected to the auxiliary supply pipe 43 at one side and connected to the inflow pipe 45 at the other side to supply the ballast water to the ballast water tank 30 or to store the ballast water therein. A piston portion 49 is located inside the cylinder portion 48 and the piston portion 49 is connected to the actuator 47 to press the ballast water accommodated in the cylinder portion 48. That is, when the actuator 47 operates, the piston 49 slides and sucks the ballast water into the cylinder portion 48 or discharges the ballast water to the ballast tank 30. At this time, it is preferable that the auxiliary supply pipe 43 is installed in the sliding movement direction of the piston portion 49.

5A, when the ballast water is supplied from the auxiliary unit 40a to the ballast water tank 30, the first air supply valve 421a and the second exhaust valve 441b are opened And the second air supply valve 421b and the first exhaust valve 441a are closed. Further, the control valve 431 is opened and the inflow valve 451 is closed.

When the high pressure air supplied from the air supply pipe 42 passes through the first air supply valve 421a and flows into the actuator 47, it is pressurized by the pressure of the air so that the piston portion 49 is pushed backward. Therefore, the ballast water contained in the cylinder part 48 flows into the auxiliary supply pipe 43 and is supplied to the ballast water tank 30. [ At this time, the air behind the actuator 47 passes through the second exhaust valve 441b and is discharged through the exhaust pipe 44. [

5 (b), when the ballast water flows into the cylinder portion 48, the second air supply valve 421b and the first exhaust valve 441a are opened, and the first The air supply valve 421a and the second exhaust valve 441b are closed. Further, the inlet valve 451 is opened and the control valve 431 is closed.

When the high-pressure air supplied from the air supply pipe 42 passes through the second air supply valve 421b and flows into the actuator 47, the piston 49 is pulled forward by the pressure of the air. Therefore, the ballast water is sucked into the cylinder portion 48 through the inflow pipe 45, and the air in front of the actuator 47 passes through the first exhaust valve 441a and is discharged through the exhaust pipe 44.

The auxiliary unit 40a according to another embodiment of the present invention repeatedly performs steps (a) and (b) of FIG. 5 if the flow rate of the ballast water flowing through the main supply pipe 21 is less than the reference flow rate, The ballast water is supplied to the tank (30).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: Offshore structure 10: Hull
20: Ballast water inflow part 21: Main supply pipe
211: first main supply valve 212: second main supply valve
30: ballast tank 40, 40a: auxiliary unit
41: buffer tank 42: air supply pipe
421: air supply valve 421a: first air supply valve
421b: second air supply valve 43: auxiliary supply pipe
431: Control valve 44: Exhaust pipe
441: exhaust valve 441a: first exhaust valve
441b: second exhaust valve 45: inlet pipe
451: Inflow valve 46: Pressure sensor
47: actuator 48: cylinder part
49: Piston section 50: Pneumatic unit
60: ozone injection unit 61: ozone injection tube
611: ozone injection valve 62: flow sensor
70: discharge pipe 701: discharge valve

Claims (7)

hull; A ballast water inflow part formed on one side of the hull and supplying seawater to the ballast water;
A ballast water tank installed in the hull for receiving and storing the ballast water from the ballast water inflow portion;
An auxiliary unit which receives the ballast water from the ballast water inflow part and supplies the ballast water to the ballast water tank; And
And a pneumatic unit for supplying high pressure air to the auxiliary unit to pressurize the ballast water stored in the auxiliary unit and supply the ballast water to the ballast tank. The offshore structure according to claim 1, wherein, when the flow rate of the ballast water supplied from the ballast water inflow portion to the ballast water tank is equal to or less than a reference flow rate, the auxiliary unit supplies the ballast water to the ballast water tank. The offshore structure according to claim 1, further comprising an ozone injection unit located at a front end of the ballast water tank and injecting ozone into the ballast water flowing into the ballast water tank. 4. The offshore structure according to claim 3, further comprising a flow sensor for measuring a flow rate of the ballast water flowing into the ballast tank, wherein the ozone injection unit injects the ozone in conjunction with the flow sensor. The apparatus according to claim 1,
A buffer tank for storing the ballast water; an air supply pipe connected to the buffer tank for supplying the air; an auxiliary supply pipe connecting the buffer tank and the ballast water tank; An offshore structure including an exhaust pipe. 6. The apparatus according to claim 5, further comprising a control valve for opening / closing the auxiliary supply pipe,
Wherein the buffer tank is maintained at a high pressure inside and the control valve is adjusted to supply the ballast water to the ballast tank. The apparatus according to claim 1,
A cylinder portion in which the ballast water is received, and a piston portion which is connected to the actuator and is located inside the cylinder and presses the ballast water,
Wherein when the actuator is operated, the piston portion slides and sucks the ballast water into the cylinder or discharges the ballast water to the ballast tank.

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