KR101177831B1 - Apparatus and method for antifreezing ballast water - Google Patents

Apparatus and method for antifreezing ballast water Download PDF

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KR101177831B1
KR101177831B1 KR20100056070A KR20100056070A KR101177831B1 KR 101177831 B1 KR101177831 B1 KR 101177831B1 KR 20100056070 A KR20100056070 A KR 20100056070A KR 20100056070 A KR20100056070 A KR 20100056070A KR 101177831 B1 KR101177831 B1 KR 101177831B1
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ballast
water
ballast water
ballast tank
heat exchange
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KR20100056070A
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KR20110136211A (en
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박지순
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삼성중공업 주식회사
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Abstract

An apparatus and method for preventing ballast water freezing are provided. An exchange line connected to contact ballast water by supplying the heated cooling water through at least one ballast tank through the ship's cooling heat exchanger to contact ballast water, and a control valve for selectively opening and closing the heat exchange line. And a freezing point sensor for sensing the freezing point of the ballast water, a control unit for supplying the cooling water to the ballast tank by opening a control valve when the ballast water reaches the freezing point by receiving a signal from the freezing point sensor, and introduced into the ballast tank. It may include a discharge unit for discharging the flow rate corresponding to the flow rate of the cooling water.

Description

Apparatus and method for preventing ballast water freezing {APPARATUS AND METHOD FOR ANTIFREEZING BALLAST WATER}

The present invention relates to an apparatus and method for preventing ballast water freezing.

Float stability in vessels for floating crude oil / gas refining facilities such as Floating Production Storage Offloading (FPSO), Floating Storage Offloading (FSO), and Floating Production Unit (FPU) operating in cold seas (North Sea, Arctic, etc.) For this purpose, a design for preventing freezing of ballast water is required. In other words, when the ballast is frozen, if the ship is inclined, the center of gravity of the ship is biased to one side, which may deteriorate the stability of the ship.

In general, a method of heating the inside of the ballast tank using a heating coil or applying air bubbling to the ballast as a method for preventing freezing of the ballast water of the vessel.

However, the heating coil or air bubbling method for preventing freezing of the ballast water of the ship, there is a problem in that a separate compressed air supply equipment or heating equipment is additionally required for the vessel, resulting in a cost increase for the manufacture of the vessel. .

The present invention is to solve the problems of the above-described background, and provides an apparatus and method for preventing the ballast water freezing of the ballast water freezing of the ballast water by simply adding a simple facility without excessive increase in the manufacturing cost of the ship.

In the ballast water freezing prevention apparatus according to an embodiment of the present invention, by supplying the cooling water heated through the cooling heat exchanger of the vessel into at least one ballast tank (ballast tank) to contact the ballast water (ballast water) Exchange line connected to the exchanger, a control valve for selectively opening and closing the heat exchange line, an ice point sensor for sensing the freezing point of ballast water, and a ballast tank by opening the control valve when the ballast water reaches a freezing point by receiving a signal from the freezing point sensor. And a discharge unit for discharging a flow rate corresponding to the flow rate of the cooling water introduced into the ballast tank.

The freezing point sensor may include a temperature sensor measuring the temperature of the ballast water and a salinity sensor measuring the salinity of the ballast water.

Discharge part, one end is protruded into the ballast tank, the ballast water is introduced, the other end is protruded to the outside of the ballast tank and the discharge line discharges the ballast water, a control valve for selectively opening and closing the discharge line, and is connected to the discharge line It may include a drain pump for discharging the ballast water to the outside of the ballast tank.

The discharge line may be formed with an enlarged diameter portion larger than the diameter of the discharge line at the end protruding into the ballast tank.

The expansion pipe may be formed with a connection portion detachably connected to the discharge line.

The heat exchange line may be provided with a flow meter for sensing the supply flow rate of the cooling water.
And a heat exchange line connected to pass the cooling water heated through the ship's cooling heat exchanger through at least one ballast tank, and a control valve connected to the heat exchange line and selectively blocking the inflow of the coolant. The control valve forms a closed loop between the cooling heat exchanger and the ballast tank, and the heat exchange line passes through the interior of the ballast tank to contact the ballast water, and the heated cooling water and the ballast water heat each other. Exchange.

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The heat exchange line may form a number of bends inside the ballast tank.

The ballast water freezing prevention method according to an embodiment of the present invention, the step of sensing whether the ballast water (ballast water) filled in the ballast tank (freezing) reaches a freezing point, and the ballast number If it is determined to reach the step of supplying the cooling water heated through the cooling heat exchanger of the vessel to the interior of the ballast tank, and discharge the flow rate corresponding to the supply flow rate of the cooling water supplied to the interior of the ballast tank to the outside of the ballast tank It may include the step.

According to one embodiment of the present invention, the cooling water heated through the cooling heat exchanger of the vessel to circulate the interior of the ballast tank, it is possible to implement a structure to prevent the freezing of ballast water with a simple structure without additional equipment It is possible to reduce manufacturing costs.

1 is a view schematically showing an apparatus for preventing ballast water freezing according to a first embodiment of the present invention.
Figure 2 is a side cross-sectional view schematically showing the connection of the discharge line and the expansion pipe for ballast water discharged by screwing as another embodiment of FIG.
3 is a view schematically showing a ballast water freezing prevention apparatus according to a second embodiment of the present invention.
4 is a view schematically showing a ballast water freezing prevention apparatus according to a third embodiment of the present invention.
5 is a view schematically showing a ballast water freezing prevention method according to an embodiment of the present invention.

Hereinafter, an apparatus and a method for preventing ballast water freezing according to embodiments of the present invention will be described in detail 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. It is provided to let you know.

1 is a view schematically showing an apparatus for preventing ballast water freezing according to a first embodiment of the present invention.

As shown in FIG. 1, the ballast water freezing prevention apparatus 100 according to the first embodiment of the present invention is connected to a ballast tank 11 to supply a high temperature cooling water 13 to a heat exchange line 10. And a control valve 20 for selectively opening and closing the heat exchange line 10, a freezing point sensor 30 installed in the ballast tank 11, and a ballast tank 11 according to a sensing signal of the freezing point sensor 30. The control unit 40 controls to selectively supply the cooling water 13, and a discharge unit 50 connected to the ballast tank 11 to discharge the flow rate corresponding to the inflow flow rate of the cooling water to the outside.

Ballast tank (11, Ballast Tank) is to balance the vessel by filling the ballast water (15, Ballst water) such as seawater therein. The ballast tank 11 is provided with various valves (not shown) and pumps (not shown) for supplying and discharging the ballast water.

Meanwhile, cooling of various equipment used in ships for Floating Production Storage Offloading (FPSO), Floating Storage Offloading (FSO), Floating Production Unit (FPU), etc., uses seawater. To this end, a ship such as FPSO, FSO, FPU and the like is provided with a large cooling heat exchanger 17 for cooling seawater.

In general, the cooling water used for cooling via the cooling heat exchanger 17 is discarded into the sea in a state where the temperature is raised. In this embodiment, the discarded high temperature cooling water is recycled to prevent freezing of the ballast water 15 using the heat exchange line 10. Hereinafter, a method of recycling the high temperature cooling water and reusing it for preventing freezing of the ballast water 15 will be described in more detail.

The heat exchange line 10 may be connected to a drain line 19 for discharging high temperature coolant from the cooling heat exchanger 17. However, the heat exchange line 10 may not be connected to the outside of the cooling heat exchanger 17, but may be connected so that the heated cooling water 13 flows inside the cooling heat exchanger 17. Reference numeral 12 is a cooling line for cooling a ship's equipment.

As shown in FIG. 1, the heat exchange line 10 is connected to the drain line 19 at one end and the other end to communicate with the inside of the ballast tank 11. Therefore, the cooling water 13 whose temperature rises through the cooling heat exchanger 17 flows into the ballast tank 11 to raise the temperature of the ballast water 15. Accordingly, when a vessel such as FPSO, FSO, FPU, etc. are operated in cold waters such as the North Pole, the ballast water 15 may be prevented from being cooled by heat exchange action of the heated cooling water supplied from the heat exchange line 10. . Therefore, in order to prevent the freezing of the ballast water 15, an additional additional facility is not necessary, so that the manufacturing cost of the vessel can be reduced.

The heat exchange line 10 may be connected to the plurality of ballast tanks 11 in this embodiment so as to supply the heated cooling water 13, respectively. In this embodiment, the ballast tanks 11 are a pair, and the heat exchange line 10 is connected to each of them. However, the present invention is not limited thereto, and one or three ballast tanks 11 may be installed, and corresponding heat exchange lines 10 may be connected to each other.

On the other hand, the control valve 20 is installed in the heat exchange line 10 between the drain line 19 and the ballast tank (11).

The control valve 20 selectively opens and closes the heat exchange line 10 by the sensing signal of the freezing point sensor 30 described later. In more detail, when the ballast water 15 is determined to be frozen through the freezing point sensor 30, the control valve 20 is opened to supply the high temperature cooling water 13 to the inside of the ballast tank 11. The freezing of the ballast water 15 is prevented. Such opening and closing operation of the control valve 20 using the freezing point sensor 30 will be described in more detail with reference to the freezing point sensor 30 below. Here, the control valve 20 may be installed as an electronic control valve operable according to the control signal of the control unit 40 to be described later.

In addition, a heat meter 14 is installed in the heat exchange line 10 to measure the amount of high temperature cooling water 13 flowing into the ballast tank 11. The flow meter 14 is to accurately check the flow rate of the cooling water 13 flowing into the ballast tank 11, so as to discharge again by the flow rate introduced using the discharge unit 50.

The freezing point sensor 30 is installed inside the ballast tank 11 to sense the freezing point of the ballast water 15 in consideration of the salinity of the ballast water.

Freezing point sensor 30 is a temperature sensor 31 for measuring the temperature of the ballast water (15) stored in the ballast tank (11), salinity sensor (33) for measuring the salinity of seawater stored in the ballast tank (11) It includes. That is, the freezing point of the ballast water 15 goes down when the salinity rises, and goes up when the salinity falls. Therefore, the freezing point sensor 30 can confirm the freezing point which changes according to the salinity condition of the ballast water 15 by measuring the salinity using the salinity sensor 33. The sensing signal of the freezing point sensor 30 is transmitted to the controller 40.

As described above, when the controller 40 receives the sensing signal of the freezing point sensor 30 and determines that the temperature of the ballast water 15 stored in the ballast tank 11 reaches a freezing point, the control valve 20 Open to control the high temperature cooling water 13 to be supplied into the ballast tank (11). The controller 40 may control to automatically open the control valve 20 according to the sensing signal of the freezing point sensor 30, or may control the opening and closing of the control valve 20 by a user's selection.

When opening and closing the control valve 20 by a user's selection, the control unit may include a display unit (not shown) indicating whether a freezing point of equilibrium is reached. That is, the user may determine whether to open the control valve 20 while checking the display in real time. That is, even if the ballast water 15 does not reach a freezing point, it is possible to manually open the control valve 20 to supply the high temperature cooling water 13 into the ballast tank 11. Of course, the display unit is also installed during the automatic control operation of the control valve 20, it is possible for the operator to easily grasp the operating state of the control valve 20 according to the salinity of seawater.

The flow rate corresponding to the cooling water introduced into the ballast tank 11 is discharged by the discharge unit 50.

The discharge unit 50 discharges the ballast tank 11 to the outside of the ballast tank 11 by a flow rate corresponding to the inflow flow rate of the cooling water 13 introduced into the ballast tank 11. This is to secure a space for the introduction of the high temperature cooling water 13 into the ballast tank (11). That is, when the ballast tank 11 freezes when the inflow space of the coolant 13 does not exist or is insufficient in the ballast tank 11, it becomes difficult to supply the high temperature coolant 13 and it is difficult to melt the ballast water 15. do. Therefore, as described above, the flow rate corresponding to the flow rate of the cooling water 13 is discharged in real time through the discharge unit 50.

To this end, the discharge unit 50 is connected to the discharge line 51 communicated with the interior of the ballast tank 11, the control valve 53 for selectively opening and closing the discharge line 51, and the discharge line 51 And a drain pump 55 for pumping the ballast water 15 inside the ballast tank 11.

One end of the discharge line 51 protrudes into the ballast tank 11 to suck the ballast water 15, and the other end protrudes to the outside of the ballast tank 11 to discharge the sucked ballast water 15. To this end, one end of the discharge line 51 is protruded a predetermined length into the ballast tank 11, the expansion portion 57 is formed at the protruding end thereof. This is for one end of the discharge line 51 is formed in the shape of a bell mouth (bell mouth), to facilitate the suction of the fluid. Expansion portion 57 may be formed integrally with the discharge line (51).

Figure 2 is a side cross-sectional view schematically showing the connection of the expansion pipe screw connection to the discharge line for ballast water discharge as another embodiment of FIG.

As shown in FIG. 2, the expansion part 57 is not limited to being integrally formed with the discharge line 51, and may be detachably coupled by a threaded connection part 52. However, the present invention is not limited thereto, and the expansion pipe 57 may be selectively detachably coupled to the discharge line 51 by welding or bolting.

Referring back to FIG. 1, the control valve 53 selectively opens and closes the discharge line 51 and is interlocked with the operating state of the control valve 20. That is, the control valve 53 is also opened simultaneously with the opening operation of the control valve 20, and the control valve 53 is also closed at the same time as the closing operation of the control valve 20. This is to allow the flow rate corresponding to the inflow flow rate of the coolant 13 flowing into the ballast tank 11 to be discharged to the outside of the ballast tank 11 in real time. Therefore, the high temperature cooling water 13 which has passed through the cooling heat exchanger 17 can always be supplied into the ballast tank 11, so that the ballast water 15 can be prevented from freezing.

With such a configuration, when a vessel such as Floating Production Storage Offloading (FPSO), Floating Storage Offloading (FSO), or Floating Production Unit (FPU) sails in cold waters, the ballast tank 11 of the ballast tank 11 can be equipped with a simple facility. It is possible to prevent freezing of the vessel, thereby improving the stability of the vessel.

3 is a view schematically showing a ballast water freezing prevention apparatus according to a second embodiment of the present invention. The same reference numerals as those in Figs. 1 and 2 denote the same members having the same function. Hereinafter, detailed description of the same reference numerals will be omitted.

As shown in FIG. 3, in the ballast water freezing prevention apparatus 200 according to the second embodiment of the present invention, a heat exchange line 110 is provided between a cooling heat exchanger 17 and a ballast tank 11. Contact with the ballast water 15 while forming a closed loop.

Referring to the heat exchange line 110 in more detail, one end and the other end of the heat exchange line 110 is connected to the drain line 19, respectively. Then, the heat exchange line 110 is extended to contact the ballast water 15 in the ballast tank (11). Accordingly, the heat exchange line 110 is connected to the drain line 19 in a closed loop shape, and the high temperature cooling water 13 undergoes heat exchange with the ballast water 15 to freeze the ballast water 15. It becomes possible to prevent it. The heat exchange line 10 may be selectively opened and closed by the control valve 20.
In more detail, the heat exchange line 10 and the control valve 20 form a closed loop between the cooling heat exchanger and the ballast tank 11, and the heat exchange line 10 includes the ballast tank 11. The ballast water is contacted with the ballast water by passing through the inside, and the freezing of the ballast water is prevented by exchanging heat between the heated cooling water and the ballast water.

4 is a view schematically showing a ballast water freezing prevention apparatus according to a third embodiment of the present invention. The same reference numerals as FIGS. 1 to 3 refer to the same members having the same function. Hereinafter, the detailed description of the same reference numerals will be omitted.

As shown in FIG. 4, in the ballast water freezing prevention apparatus 300 according to the third embodiment of the present invention, the heat exchange line 210 has a plurality of curved portions formed inside the ballast tank 11. . This is to increase the area of contact between the heat exchange line 210 and the ballast water 15, to facilitate the heat exchange action between the high temperature cooling water 13 and the ballast water 15.

Figure 5 is a flow chart schematically showing a method for preventing ballast water freezing according to an embodiment of the present invention. The same reference numerals as those in Figs. 1 to 4 denote the same members having the same function. Hereinafter, the detailed description of the same reference numerals will be omitted.

First, the freezing point of the ballast water 15 filled in the ballast tank 11 is sensed. (S10) Here, the sensing of the freezing point of the ballast water 15 can be confirmed by measuring the salinity and temperature of the ballast water. . That is, the freezing point is lowered when the salinity of the ballast water 15 is increased, and the freezing point is increased when the salinity of the ballast water is lowered. In consideration of the correlation, it is possible to sense the freezing point according to the temperature of the ballast water.

 Next, when it is determined in step S10 that the ballast water 15 reaches a freezing point (S20), the coolant 13 of high temperature is supplied into the ballast tank 11. (S30) In addition, the ballast water ( If it is determined that the ballast water 15 melts or rises to a predetermined temperature by measuring the temperature of 15) in real time, the supply of the coolant 13 may be stopped by closing the control valve 20.

Subsequently, the flow rate corresponding to the supply flow rate of the cooling water 13 introduced into the ballast tank 11 is discharged to the outside of the ballast tank 11. (S40) This is to supply the cooling water 13 to the ballast tank (11). This is to ensure a space to ensure a smooth supply of the cooling water 13 during the freezing of the ballast water (15).

The present invention has been described above with reference to the embodiments shown in the drawings. However, the present invention is not limited thereto, and various modifications or other embodiments falling within the scope equivalent to the present invention are possible by those skilled in the art. Accordingly, the true scope of protection of the present invention should be determined by the following claims.

10 ... heat exchange line 11 ... ballast tank
13 Coolant 14 Flowmeter
15 ... ballast water 17 ... cooling heat exchanger
19 ... Drainage line 20 ... Control valve
30 ... Freezing point sensor 40 ... Control part
50 ... outlet

Claims (10)

A heat exchange line connected to contact the ballast water by supplying the cooling water heated through the cooling heat exchanger of the vessel into at least one ballast tank;
A control valve for selectively opening and closing the heat exchange line;
A freezing point sensor for sensing a freezing point of the ballast water;
A control unit which receives the freezing point sensor signal and supplies the cooling water to the ballast tank by opening the control valve when the ballast water reaches a freezing point; And
Discharge part for discharging the flow rate corresponding to the flow rate of the cooling water introduced into the ballast tank
Ship ballast water freezing prevention apparatus comprising a. The method of claim 1,
The freezing point sensor,
A temperature sensor for measuring the temperature of the ballast water; And
Salinity sensor to measure the salinity (salinity) of the ballast water
Ship ballast water freezing prevention apparatus comprising a. The method of claim 2,
The discharge portion
A discharge line at one end protruding into the ballast tank to allow the ballast water to flow in and the other end to protrude out of the ballast tank to discharge the ballast water;
A control valve for selectively opening and closing the discharge line; And
A drain pump connected to the discharge line and discharging the ballast water to the outside of the ballast tank;
Ship ballast water freezing prevention apparatus comprising a. The method of claim 3,
The discharge line,
An apparatus for preventing ballast water freezing, in which an enlarged portion having a diameter larger than the diameter of the discharge line is formed at an end projecting into the ballast tank. The method of claim 4, wherein
The expansion portion,
The ballast water freezing prevention device formed with a connection portion detachably connected to the discharge line. The method of claim 1,
The ballast water freezing prevention device is installed in the heat exchange line is installed a flow meter for sensing the supply flow rate of the cooling water. A heat exchange line connected to pass the inside of the at least one ballast tank by passing the heated cooling water through the ship's cooling heat exchanger; And
A control valve connected to the heat exchange line and selectively blocking the inflow of the cooling water,
The heat exchange line and the control valve,
A closed loop is formed between the cooling heat exchanger and the ballast tank, and the heat exchange line passes through the ballast tank to be in contact with ballast water.
The ballast water freezing prevention apparatus for exchanging heat between the heated cooling water and the ballast water. delete The method of claim 7, wherein
The heat exchange line is a ballast water freezing prevention apparatus for forming a plurality of bent in the interior of the ballast tank. Sensing whether a ballast water filled in a ballast tank reaches a freezing point;
If it is determined that the ballast water of the step reaches a freezing point, supplying the cooling water heated through the cooling heat exchanger of the vessel into the ballast tank; And
Discharging the flow rate corresponding to the supply flow rate of the cooling water supplied into the ballast tank to the outside of the ballast tank
Ship ballast water freezing prevention comprising a.
KR20100056070A 2010-06-14 2010-06-14 Apparatus and method for antifreezing ballast water KR101177831B1 (en)

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KR101384653B1 (en) * 2012-02-07 2014-04-14 삼성중공업 주식회사 Floating structure
KR101379953B1 (en) * 2012-02-29 2014-04-02 삼성중공업 주식회사 Cooling Apparatus of Warm Water for Offshore Floating Body
KR101298124B1 (en) * 2012-03-07 2013-08-20 한국해양과학기술원 Ballasting apparatus with anti-freezing function using microbuble and ship including the same
KR101298126B1 (en) * 2012-03-07 2013-08-20 한국해양과학기술원 Ballasting apparatus with anti-freezing function using ultrasonic waves and ship including the same
KR101444368B1 (en) * 2012-11-23 2014-09-26 삼성중공업 주식회사 Sea water supply device for treatment of ballast water
KR101487945B1 (en) * 2013-07-24 2015-01-30 삼성중공업 주식회사 Winterization system with flare heat recovery system and operating method thereof
KR102150499B1 (en) * 2014-12-12 2020-09-02 삼성중공업 주식회사 Winterization system based on waste heat recovery and operating method thereof
KR102489012B1 (en) * 2016-05-19 2023-01-16 대우조선해양 주식회사 Apparatus and method for de-icing of balancing water in arctic vessel
CN113365910A (en) * 2019-01-29 2021-09-07 大宇造船海洋株式会社 Polar vessel with cooling water control system and method for controlling cooling water in a polar vessel
CN114572343A (en) * 2022-03-25 2022-06-03 广船国际有限公司 Ship capable of preventing open water tank from freezing
CN115973399A (en) * 2022-12-08 2023-04-18 中国船舶集团青岛北海造船有限公司 Anti-freezing system for ballast tank of ship

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KR200349496Y1 (en) 2004-02-09 2004-05-08 한국해양연구원 Apparatus for Treatment of Ships' Ballast Water
KR100952911B1 (en) 2007-11-27 2010-04-16 삼성중공업 주식회사 Apparatus for freezeing prevention of ships ballast water

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
KR200349496Y1 (en) 2004-02-09 2004-05-08 한국해양연구원 Apparatus for Treatment of Ships' Ballast Water
KR100952911B1 (en) 2007-11-27 2010-04-16 삼성중공업 주식회사 Apparatus for freezeing prevention of ships ballast water

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