JP5979941B2 - Facilities and methods for preventing marine organisms from growing on sea chests and the like provided at the bottom of a ship - Google Patents

Description

  The present invention relates to a facility and a method suitable for preventing marine organisms from adhering to a lid of a sea chest provided at the bottom of a ship and a pipe communicating with the sea chest.

  In the case of a coastal ship that has frequently traveled on a relatively short route and stopped at a port or the like, there are many opportunities for marine organisms to adhere to and breed on the bottom of the ship.

  If marine organisms adhere to the lid of the sea chest provided at the bottom of the ship and the piping that communicates with the sea chest and breed, the operational efficiency may be reduced, maintenance may be required, or failure may occur. It is known that various problems occur.

  As a method for preventing marine organisms from adhering to the lid portion of a ship's sea chest and piping communicating with the sea chest, and the like, a method using a chemical is often used (Patent Document 1).

JP 09-123992 A

  As described above, a method using a chemical solution is effective, but it is necessary to consider the natural environment problem because the chemical solution used for preventing the growth of marine organisms is discharged out of the ship. In addition, a considerable running cost is required in order to continuously inject the chemical solution.

  In the case of coastal vessels, there are many opportunities to stop at a port or the like, so there are many opportunities for marine organisms to adhere to and breed on the bottom of the vessel.

  Therefore, a coastal ship that can prevent marine organisms from adhering to the lid of the ship's sea chest and piping connected to the sea chest without using chemicals and breeding, and can also reduce running costs ( It is an object of the present invention to provide a facility and method suitable for a large number of ships that do not have steam boiler facilities.

  In order to solve the above-mentioned problem, the present invention is equipped with a fresh water system cooling circulation facility including a device for raising the temperature of circulating fresh water, and a return portion for generating a vortex for returning warm seawater at the bottom of a ship. A plurality of sea chests or a plurality of sea chests that are not equipped with a return part that generates eddy currents that return warm seawater at the bottom of a ship, and are connected to any of the sea water system pipes that communicate with the sea chest and the sea water system pipes A seawater system piping valve, a power source for sucking seawater from the sea chest, and a heat exchanger that uses the heat of warm water circulated to the fresh water system cooling circulation facility, at the bottom of the ship A step of sucking seawater from the outside of the ship into the ship from one of the sea chests provided, and a step of delivering the seawater sucked from the one seawater suction / discharge section to the heat exchanger via a seawater system pump And a step of raising the temperature of the seawater delivered to the heat exchanger by one heat exchange by the heat exchanger, and warm seawater raised by one heat exchange by the heat exchanger at the bottom of the ship A step of delivering to the other sea chest, a step of discharging the warm seawater delivered to the other sea chest provided at the bottom of the ship into the other sea chest, and the hot seawater continuously into the other sea chest. Discharging and filling the whole seam in the other sea chest with the warm seawater, and filling the whole seam in the other sea chest with the hot seawater from the lid in the other sea chest The marine organisms are prevented from adhering to the lid portion in the other sea chest and the piping communicating with the other seawater intake / exhaust portion, or breeding after adhering to the marine organisms. The To provide a method for stopping.

Moreover, this invention is a ship provided with the fresh water system | strain cooling circulation equipment including the apparatus for raising the temperature of circulating fresh water, in order to solve the above-mentioned subject, Comprising: Several sea chests provided in the bottom part of a ship, A sea water system pipe communicating with the sea chest, a sea water system pipe valve coupled to one of the sea water system pipes, a power source for sucking sea water from the sea chest, and a temperature circulating to the fresh water system cooling circulation facility. A marine organism adhesion / proliferation prevention facility is provided, in which a seawater system pipe provided with a heat exchanger that uses the heat of fresh water is connected to the sea chest and is branched from the air vent pipe of the sea chest.

Moreover, this invention is a ship provided with the fresh water system | strain cooling circulation equipment including the apparatus for raising the temperature of circulating fresh water, in order to solve the above-mentioned subject, Comprising: Several sea chests provided in the bottom part of a ship, A sea water system pipe communicating with the sea chest, a sea water system pipe valve coupled to one of the sea water system pipes, a power source for sucking sea water from the sea chest, and a temperature circulating to the fresh water system cooling circulation facility. A sea water system pipe connected to the sea chest and connected to the sea chest is a pipe branched from the air vent pipe of the sea chest, and an eddy current for returning the hot sea water to the sea chest. A marine organism adhesion / proliferation prevention facility provided with an L-shaped return portion that causes stagnation.

Moreover, this invention is a ship provided with the fresh water system | strain cooling circulation equipment including the apparatus for raising the temperature of circulating fresh water, in order to solve the above-mentioned subject, Comprising: Several sea chests provided in the bottom part of a ship, A sea water system pipe communicating with the sea chest, a sea water system pipe valve coupled to one of the sea water system pipes, a power source for sucking sea water from the sea chest, and a temperature circulating to the fresh water system cooling circulation facility. A sea water system pipe connected to the sea chest and connected to the sea chest is a pipe branched from the air vent pipe of the sea chest, and an eddy current for returning the hot sea water to the sea chest. A marine organism adhesion / proliferation prevention facility is provided, in which an L-shaped return portion for generating a heat is added and heat radiation prevention construction is performed on the inner wall of the sea chest.

  The method and equipment of the present invention can prevent marine organisms from adhering to and breeding on the lid of the sea chest provided at the bottom of the ship and piping connected to the sea chest without using chemicals. The running cost required for chemicals can be reduced.

In addition, since the equipment of the present invention may be equipment corresponding to a small flow rate, if the space for the heat exchanger can be secured, other pipes and pumps are not so bulky, so additional equipment can be provided by using a sea chest air vent pipe. Is possible. By branching from the air vent pipe provided in the sea chest, it is not necessary to process the hull.

  In addition, since the facility of the present invention can generate an eddy current in the sea chest by adding an L-shaped return portion to the sea chest, the heat transfer efficiency by the warm seawater is improved and the marine organisms are attached by the vortex. Prevention becomes even more effective.

  In addition, the facility of the present invention can more effectively prevent the attachment of marine organisms by performing heat radiation prevention construction (such as a heat insulating material) on the starboard side sea chest and the inner wall of the port side sea chest.

FIG. 1 is a diagram illustrating a configuration of a marine organism adhesion / proliferation prevention facility according to a first embodiment. FIG. 2 is a diagram showing a marine facility including a marine organism adhesion / proliferation prevention facility according to the first embodiment. FIG. 3 is a diagram showing the flow of seawater when the return portion of the port side sea chest is L-shaped. FIG. 4 is an enlarged view of the vicinity of the lid portion showing the flow of seawater when the return portion of the port side sea chest is L-shaped. FIG. 5 is a diagram illustrating an operation during operation (at the time of discharging warm seawater) of the marine organism adhesion breeding prevention facility according to the first embodiment. FIG. 6 is a diagram illustrating an operation during operation (at the time of discharging warm seawater) of the marine organism adhesion breeding prevention facility according to the first embodiment. FIG. 7 is a diagram illustrating an operation during a stoppage of the marine organism adhesion breeding prevention facility according to the first embodiment (at the time of discharging warm seawater). FIG. 8 is a diagram illustrating the operation during the stoppage of the marine organism adhesion breeding prevention facility according to the first embodiment (when discharging warm seawater). FIG. 9 is a diagram illustrating the configuration of the marine organism adhesion / proliferation prevention facility according to the second embodiment. FIG. 10 is a diagram showing operations during operation (at the time of discharging and discharging warm seawater) of the marine organism adhesion breeding prevention facility of Example 2. FIG. 11 is a diagram illustrating an operation (during warm seawater discharge and discharge) while the marine organisms adherence and breeding prevention facility according to the second embodiment is stopped.

  This will be implemented as an additional facility for coastal ships with multiple sea chests at the bottom.

  The configuration of the marine organism adhesion / proliferation prevention facility according to the first embodiment will be described with reference to FIGS.

The marine organism attachment / propagation prevention equipment (1) includes a starboard sea chest (20) provided at the bottom of the ship on the starboard side, a port side sea chest (21) provided at the bottom of the ship on the starboard side, and the starboard side seast. A starboard side seawater system piping group (30), a portside seawater system piping group (31) and other seawater system piping group (32) communicating with the chest and the port side sea chest, and the seawater system piping group (30, 31, 32) A starboard side seawater system valve group (40), a portside seawater system valve group (41), and other seawater system valve groups (42) coupled to any of the above, the starboard sea chest, and the port side sea chest. A seawater system pump (50) that is a power source for sucking seawater into the water, a predetermined heat exchanger (60), and a predetermined freshwater system cooling and circulation facility that is a facility for circulating fresh water and cooling the main engine 70) the de constituting (Figure 1).

The starboard side sea chest (20) includes a starboard side seawater intake and discharge part (201) for sucking seawater from the outside of the ship into the ship and discharging seawater from the ship to the outside of the ship, and a large-scale to the starboard side seawater intake and discharge part. A perforated starboard side lid portion (202) for preventing inhalation of solid matter (marine organisms, garbage, etc.), and the starboard side lid portion further from the starboard side seawater intake / exhaust portion through a hole in the starboard side lid portion And a starboard side seawater discharge part (203) for discharging seawater to the outside (hereinafter referred to as “outside of starboard side lid part”) (FIG. 1) .

The port side sea chest (21) has a large port to the port side sea water intake and discharge part (211) for sucking seawater from the outside of the ship into the ship and discharging sea water from the ship to the outside of the ship, and the port side seawater intake and discharge part. A perforated port side lid portion (212) for preventing the inhalation of solid matter, and the port side seawater intake / discharge portion through the hole on the port side lid portion further outside the port side lid portion (hereinafter referred to as “port side”). port side seawater discharge portion for discharging the seawater side covers outsiders "hereinafter.) to the (213), in which arrangement (Figure 1).

  By adding an L-shaped return part to the starboard-side sea chest (20) and the port-side sea chest (21), eddy currents can be generated in the sea chest. With improvement, the prevention of marine organism adhesion due to eddy current becomes even more effective (FIGS. 3 and 4).

  By carrying out heat radiation prevention construction (such as a heat insulating material) on the inner wall of the starboard side sea chest (20) and the port side sea chest (21), marine organism adhesion prevention becomes even more effective.

The starboard-side seawater system piping group (30) and the starboard-side seawater system valve group (40) include a starboard-side air vent pipe (301) communicating with the starboard-side seawater intake / discharge portion (201), and the starboard A starboard side first valve (401) provided on the sea chest side in the side air vent pipe, a starboard side second valve (402) provided on the side opposite to the sea chest in the starboard side air vent pipe, and the starboard side The starboard side second seawater pipe (302) branched from the middle part of the air vent pipe and the starboard side third seawater pipe (304) branched from the middle part of the starboard side second seawater pipe (FIG. 1). .

The port-side seawater system piping group (31) and the port-side seawater system valve group (41) include a port-side air vent pipe (311) connected to the port-side seawater intake / discharge portion (211) and the port side. A port side first valve (411) provided on the side of the sea chest in the side air vent pipe, a port side second valve (412) provided on the side opposite to the sea chest in the port side air vent pipe, and the port side The port side second seawater pipe (312) branched from the middle part of the air vent pipe and the port side third seawater pipe (314) branched from the middle part of the port side second seawater pipe (FIG. 1). .

The said other seawater system piping group (32) couple | bonds with the heat exchanger seawater piping (321) which passes the inside of the said heat exchanger (60), and the edge part by the side of the anti-heat exchanger of the said seawater system pump (50). The seawater system pump pipe (322) is configured (FIG. 1) .

The other seawater system valve group (42) includes a seawater flow rate adjustment valve (423) provided at a discharge part of the seawater system pump (50), a side opposite to the starboard side second seawater pipe (302), and the port side. A three-way first valve (421) coupled to the anti-branch side of the side second seawater piping (312) and the anti-seawater system pump side of the seawater system pump piping (322), and the port side third seawater piping ( 314), an anti-branch side of the starboard side third seawater pipe (304), and an anti-seawater flow rate adjustment valve (anti-seawater system pump discharge part) side of the heat exchanger seawater pipe (321); It comprises a combined three-way second valve (422) (FIG. 1) .

  As shown in FIG. 2, the heat exchanger (60) is a facility that uses the heat of warm fresh water circulated in the fresh water system cooling circulation facility (70) to raise the temperature of the seawater sucked into the ship to a certain level. It is.

  The fresh water system cooling and circulation facility (70) is not limited in configuration as long as it is a facility for circulating fresh water to cool the engine (engine). For example, as shown in FIG. 2, a main machine (701), a fresh water system pipe group (703) for delivering fresh water, a fresh water system valve group (704) for adjusting the flow rate of fresh water, and a fresh water system pump (705). And L. These include facilities constituted by an O cooler (706), an intercooler (707), a fresh water cooler (708), and a fresh water boiler (709) which is a device for increasing the temperature of circulating fresh water.

  Next, the operation when seawater is drawn from the starboard-side sea chest and warm seawater is discharged and discharged into the port-side sea chest during operation will be described with reference to FIGS.

The port side of the three-way first valve (421) is closed, the starboard side of the three-way second valve (422) is closed, the starboard second valve (402) is closed, and the port second valve (412) is closed. By operating the seawater system pump (50) in a state, seawater (inside the starboard side seawater intake / discharge part (201) located below the sea level (A) via the starboard side air vent pipe (301) W1) is inhaled (FIG. 5) .

  In addition, about the marine organisms or garbage etc. which are large solids which cannot pass through the hole of starboard side cover part (202), they are filtered by the said cover part (202).

The seawater (W1) sucked into the ship reaches the three-way first valve (421) via the starboard side first valve (401) and the starboard side second seawater pipe (302) (FIG. 5). .

Further, the seawater (W1) that has reached the three-way first valve (421) is a seawater system pump pipe (322), a seawater system pump (50), a seawater flow rate adjustment valve (423), a heat exchanger seawater pipe (321 ) To reach the heat exchanger (60) (FIG. 5) .

Further, the seawater (W1) having reached the heat exchanger (60) (for example, about 10 ° C. to 15 ° C.) rises to 60 ° C. or more in one heat exchange, and the three-way second valve (422) is reached (FIG. 5) .

  Regarding the heat exchanger, during the operation of the ship, the temperature of the fresh water circulated in the fresh water system cooling circulation facility (70) is assumed to be about 80 ° C., and the seawater (W1) sucked into the ship If the temperature is about 10 ° C. to 15 ° C., it is designed to rise to 60 ° C. or more by one heat exchange.

Further, the warm seawater (W2) that has reached the three-way second valve (422) passes through the port side third sea water pipe (314) and the port side second sea water pipe (312), and then becomes the port side first valve ( 411) is reached (FIG. 5) .

Furthermore, the warm seawater (W2) that has reached the port side first valve (411) is discharged to the port side seawater intake and discharge section (211) via the port side air vent pipe (311) (FIG. 5). .

  The warm seawater (W2) discharged to the port side seawater intake / discharge portion (211) stays near the upper portion of the port side seawater intake / discharge portion due to a temperature difference (FIG. 5).

  When the warm seawater (W2) is continuously discharged to the port side seawater intake and discharge unit (211), the warm seawater (W2) gradually spreads over a wide range of the port side seawater intake and discharge unit.

  Due to the continuous discharge of the warm seawater (W2), the warm seawater (W2) that has spread to the entire area of the port side seawater intake and discharge section (211) eventually reaches the port side lid section (212), and the port side Warm seawater (W3) is gradually discharged out of the port side lid part from the port side sea water discharge part (213) which is a hole of the lid part (FIG. 6).

The warm seawater (W3) continuously discharged out of the port side lid and the warm sea water (W2) staying near the lower part of the port side seawater intake / discharge section (211) Since the temperature continues to be maintained at a temperature of about 45 ° C. to 50 ° C., marine organisms that are not good at the temperature do not adhere to the port side lid. Moreover, even if a small amount of marine organisms attach, they cannot die and die (FIG. 6) .

Also, the residence the port side air vent pipe from (311) near the top of the warm sea water (W2) and said port side seawater pumping unit which is continuously discharged (211) on the port side seawater pumping unit (211) Due to the warm seawater (W2), the temperature near the discharge end of the port side air vent pipe is maintained at a temperature of about 50 ° C. to 60 ° C. Marine organisms that are not good at the temperature will not adhere. Moreover, even if a small amount of marine organisms attach, they cannot die and die (FIG. 6) .

  Moreover, since it becomes the same operation | movement also in the location (location connected to the sea chest) where warm seawater (W2) continuously delivers or stays, it is thought that the same effect appears.

  In addition, although the discharge flow rate of warm seawater (W2) can be adjusted with the said seawater flow rate adjustment valve (423), it is normally designed at about 10-20 liters per minute.

  Next, FIG. 7 and FIG. 7 show the operation when the seawater or warm seawater is sucked from the port side sea chest and discharged and discharged into the starboard side sea chest while the ship is stopped (main engine is stopped). A description will be given according to FIG.

The port side of the three-way second valve (422) is closed, the starboard side of the three-way first valve (421) is closed, the starboard second valve (402) is closed, and the port second valve (412) is closed. By operating the seawater system pump (50) in a state, the port side side seawater intake and discharge part (211) located below the sea level (A) passes through the port side air vent pipe (311), and the warm seawater enters the ship. (W2) or low temperature seawater (W1) is inhaled (FIG. 7) .

  In addition, about the seawater sucked into the ship, when the warm seawater (W2) staying in the port side seawater suction and discharge part (211) is finished, the low temperature seawater (W1) can be sucked.

The warm seawater (W2) or low-temperature seawater (W1) sucked into the ship passes through the port side first valve (411) and the port side second seawater pipe (312), and then passes through the three-way first valve (421). ) Is reached (FIG. 7) .

Further, the warm seawater (W2) or the low-temperature seawater (W1) that has reached the three-way first valve (421) includes a seawater system pump pipe (322), a seawater system pump (50), and a seawater flow rate adjustment valve (423). ), And reaches the heat exchanger (60) via the heat exchanger seawater pipe (321) (FIG. 7) .

Further, the warm seawater (W2) or the seawater (W1) (for example, about 15 ° C. to 20 ° C.) that has reached the heat exchanger (60) (for example, about 45 ° C. to 50 ° C.) The temperature rises to about 70 ° C. by heat exchange and reaches the three-way second valve (422) (FIG. 7) .

  As for the heat exchanger (60), in the fresh water system cooling and circulation facility (70) that is stopped, the fresh water is heated to about 90 ° C. by the fresh water system boiler (709) as shown in FIG. Exchange.

Further, the warm seawater (W4) that has reached the three-way second valve (422) passes through the starboard side third seawater pipe (304) and starboard side second seawater pipe (302), and then enters the starboard side first valve ( 401) is reached (FIG. 7) .

Furthermore, the warm seawater (W4) that has reached the starboard side first valve (401) is discharged to the starboard side seawater intake and discharge section (201) via the starboard side air vent pipe (301) (FIG. 7). .

  The warm seawater (W4) discharged to the starboard side seawater intake / discharge portion (201) stays near the upper portion of the starboard side seawater intake / discharge portion (201) due to a temperature difference (FIG. 7).

  When the warm seawater (W4) continues to be discharged to the starboard side seawater intake and discharge part (201), the warm seawater (W4) gradually spreads over a wide range of the starboard side seawater intake and discharge part (201). To go.

Wherein the continuous discharge of the warm sea water (W4), before Symbol starboard seawater pumping section (201) of the spread warm seawater until the entire region (W4) is to eventually reach the starboard side lid (202), said starboard Warm seawater (W5) is gradually discharged out of the starboard side lid portion from the starboard side seawater discharge portion (203) which is a hole of the side lid portion (FIG. 8).

The warm seawater (W5) continuously discharged out of the starboard side lid part and the warm seawater (W4) staying near the lower part of the starboard side seawater intake and discharge part (201) Since the temperature continues to be maintained at a temperature of about 45 ° C. to 50 ° C., marine organisms that are not good at the temperature do not adhere to the starboard side lid. Moreover, even if a small amount of marine organisms attach, they cannot die and die (FIG. 8) .

Further, warm seawater staying near the top of the starboard-side air vent pipe continuously discharged as warm seawater into the starboard side seawater pumping unit from (301) (201) (W4 ) and the starboard side seawater pumping unit (W4), the temperature in the vicinity of the discharge end of the starboard side air vent pipe (301) is maintained at a temperature of about 50 ° C. to 60 ° C. Therefore, in the vicinity of the exhaust end of the starboard side air vent pipe (301) Does not attach marine organisms that are not good at the temperature. Moreover, even if a small amount of marine organisms attach, they cannot die and die (FIG. 8) .

  Further, since the same operation is performed at a location where the warm seawater (W4) is continuously delivered or stayed (a location communicating with the sea chest), it is considered that the same effect appears.

  The marine organism adherence prevention apparatus of Example 2 is an apparatus in which all seawater system valves use two-way valves. Only parts different from the first embodiment will be described with reference to FIG.

  The marine organism attachment / propagation prevention equipment (1) includes a starboard sea chest (20) provided at the bottom of the ship on the starboard side, a port side sea chest (21) provided at the bottom of the ship on the starboard side, and the starboard side seast. A starboard side seawater system piping group (30), a portside seawater system piping group (31) and other seawater system piping group (32) communicating with the chest and the port side sea chest, and the seawater system piping group (30, 31, 32) A starboard side seawater system valve group (40), a portside seawater system valve group (41), and other seawater system valve groups (42) coupled to any of the above, the starboard sea chest, and the port side sea chest. A seawater system pump (50) that is a power source for sucking seawater into the water, a predetermined heat exchanger (60), and a predetermined freshwater system cooling and circulation facility that is a facility for circulating fresh water and cooling the main engine 70) and de-composing.

  The starboard side seawater system piping group (30) and the starboard side seawater system valve group (40) include a starboard side first seawater pipe (305) communicating with the starboard side seawater intake and discharge section (201), A starboard side first valve (401) coupled to the anti-chest side of the starboard side first seawater pipe, a starboard side second seawater pipe (302) coupled to the anti-chest side of the starboard side first valve; A starboard side third valve (403) coupled to the anti-chest chest side of the starboard side second seawater pipe, a starboard side third seawater pipe (304) branched from the middle part of the starboard side second seawater pipe, and the starboard side It is comprised with the starboard side 4th valve | bulb (404) couple | bonded with the anti-branching side of the side 3rd seawater piping.

  The port-side seawater system piping group (31) and the port-side seawater system valve group (41) include a port-side first seawater pipe (315) communicating with the port-side seawater intake / discharge portion (211), A port side first valve (411) coupled to the anti-chest side of the port side first seawater pipe, a port side second sea water pipe (312) coupled to the side of the port side first valve opposite the sea chest, A port side third valve (413) coupled to the anti-chest chest side of the port side second seawater pipe, a port side third sea water pipe (314) branched from the middle part of the port side second sea water pipe, and the port side It is comprised with the port side 4th valve | bulb (414) couple | bonded with the anti-branching side of the side 3rd seawater piping.

  The other seawater system piping group (32) includes an intermediate first seawater piping (325) that relays between the starboard side third valve (403) and the portside third valve (413), and the starboard side An intermediate second seawater pipe (326) that relays between the four valve (404) and the port side fourth valve (414), and the seawater system pump (50) branched from the middle of the intermediate first seawater pipe Sea water system pump pipe (322) combined with the end of the counter heat exchanger side, and heat exchanger sea water pipe branched from the middle part of the intermediate second sea water pipe and passing through the heat exchanger (60) ( 321).

  The other seawater system valve group (42) is composed of a seawater flow rate adjustment valve (423) provided at the discharge part of the seawater system pump (50).

  Next, during operation, the operation when the seawater is drawn from the starboard-side sea chest and the warm seawater is discharged and discharged to the port-side sea chest will be described with reference to FIG. To do.

  The starboard side seawater intake and discharge unit located below the sea level (A) by operating the seawater system pump (50) with the port side third valve (413) and starboard side fourth valve (404) closed. From (201), seawater (W1) is sucked into the ship through the starboard side first seawater pipe (305).

  The seawater (W1) sucked into the ship is starboard side first valve (401), starboard side second seawater pipe (302), starboard side third valve (403), intermediate first seawater pipe (325), seawater. It reaches the heat exchanger (60) via the system pump pipe (322), the seawater system pump (50), the seawater flow rate adjustment valve (423), and the heat exchanger seawater pipe (321).

  The seawater (W1) that has reached the heat exchanger (60) rises to 60 ° C. or more in one heat exchange and passes through the intermediate second seawater pipe (326) to the port side fourth valve (414). ).

  Further, the warm seawater (W2) that has reached the port side fourth valve (414) includes a port side third sea water pipe (314), a port side second sea water pipe (312), a port side first valve (411), It is discharged to the port side seawater intake and discharge unit (211) via the port side first seawater pipe (315).

  Since the subsequent operation is substantially the same as that of the first embodiment, a description thereof will be omitted.

  Next, the operation when the seawater or warm seawater is drawn from the port side sea chest and the warm sea water is discharged and discharged to the starboard side sea chest while the ship is stopped (while the main engine is stopped) will be described with reference to FIG. To do.

  A port-side seawater intake and discharge unit located below the sea level (A) by operating the seawater system pump (50) with the starboard-side third valve (403) and the port-side fourth valve (414) closed. Warm seawater (W2) or low temperature seawater (W1) is drawn into the ship from (211) via the port side first seawater pipe (315).

  The warm seawater (W2) or low temperature seawater (W1) sucked into the ship is port side first valve (411), port side second sea water pipe (312), port side third valve (413), intermediate 1 Seawater piping (325), Seawater system pump piping (322), Seawater system pump (50), Seawater flow rate adjustment valve (423), Heat exchanger Seawater piping (321), and reach the heat exchanger (60) To do.

  The warm seawater (W2) or low temperature seawater (W1) that has reached the heat exchanger (60) rises to about 70 ° C. in one heat exchange, and passes through the intermediate second seawater pipe (326). To the starboard side fourth valve (404).

  The warm seawater (W4) that has reached the starboard side fourth valve (404) is starboard side third seawater pipe (304), starboard side second seawater pipe (302), starboard side first valve (401), starboard side. It is discharged to the starboard side seawater intake / discharge section (201) via the first pipe (305).

  Since the subsequent operation is substantially the same as that of the first embodiment, a description thereof will be omitted.

  The equipment and method of the present invention can prevent marine organisms from adhering to the lid of the ship's sea chest and the piping communicating with the sea chest without using chemicals, so that the running cost is dramatically increased. Therefore, the present invention has industrial applicability.

DESCRIPTION OF SYMBOLS 1 Marine organism adhesion growth prevention equipment 20 Starboard side sea chest 201 Starboard side seawater suction discharge part 202 Starboard side cover part 203 Starboard side seawater discharge part 21 Port side sea chest 211 Port side seawater suction discharge part 212 Port starboard side cover part 213 Port side Side seawater discharge section 30 Starboard side seawater system piping group 301 Starboard side air vent pipe 302 Starboard side second seawater pipe 304 Starboard side third seawater pipe 305 Starboard side first seawater pipe 31 Port side seawater system pipe group 311 Port side air vent Pipe 312 Port side second seawater piping 314 Port side third seawater piping 315 Port side first seawater piping 32 Other seawater system piping group 321 Heat exchanger seawater piping 322 Seawater system pump piping 325 Intermediate first seawater piping 326 Intermediate second seawater Piping 40 Starboard side seawater system valve group 401 Starboard side first valve 402 Starboard side second valve 403 Starboard Side third valve 404 Starboard side fourth valve 41 Port side seawater system valve group 411 Port side first valve 412 Port side second valve 413 Port side third valve 414 Port side fourth valve 42 Other sea water system valve group 421 Three-way First valve 422 Three-way second valve 423 Sea water flow rate adjustment valve 50 Sea water system pump 60 Heat exchanger 70 Fresh water system cooling circulation equipment 701 Main unit 703 Fresh water system piping group 704 Fresh water system valve group 705 Fresh water system pump 706 Shimizu cooler 707 Intercooler 708 L. O cooler 709 Fresh water boiler A Sea surface W1 Seawater W2 Warm seawater W3 Warm seawater (discharge)
W4 warm seawater W5 warm seawater (discharge)

Claims (4)

A plurality of sea chests equipped with a fresh water system cooling circulation facility including a device for raising the temperature of the circulating fresh water and a return part for generating a vortex for returning the warm sea water at the bottom of the ship or warm sea water provided at the bottom of the ship A plurality of sea chests that are not equipped with a return portion that generates a vortex that returns water, a sea water system pipe that communicates with the sea chest, a sea water system pipe valve that is coupled to one of the sea water system pipes, and sea water from the sea chest A ship equipped with a power source for suction and a heat exchanger that uses heat of warm fresh water circulated to the fresh water system cooling circulation facility,
Inhaling seawater from the outside of the ship into the ship from one sea chest provided at the bottom of the ship;
A step of delivering seawater sucked from the one seawater suction and discharge section to a heat exchanger via a seawater system pump;
Increasing the temperature of the seawater delivered to the heat exchanger by one heat exchange with the heat exchanger;
Delivering the warm seawater raised by one heat exchange by the heat exchanger to the other sea chest provided at the bottom of the ship;
Discharging the warm seawater delivered to the other sea chest at the bottom of the ship into the other sea chest;
Continuously discharging hot seawater into the other sea chest and filling the entire area in the other sea chest with hot sea water;
A step of continuously discharging the warm seawater from the lid portion in the other sea chest after the warm seawater is filled to the entire area in the other sea chest;
The marine organisms are prevented from adhering to the lid portion in the other sea chest and the piping communicating with the other seawater intake / exhaust portion, or the breeding after the marine organisms adhere is prevented. A ship equipped with a fresh water system cooling circulation facility including a device for raising the temperature of the circulating fresh water,
A plurality of sea chests at the bottom of the ship;
Seawater system piping communicating with the sea chest;
A seawater system pipe valve coupled to one of the seawater system pipes;
A power source for drawing seawater from the sea chest;
A heat exchanger that uses heat of warm fresh water circulated in the fresh water system cooling circulation facility,
A marine organism adhesion / proliferation prevention facility, wherein a seawater system pipe connected in communication with the sea chest is a pipe branched from an air vent pipe of the sea chest. The marine organism adhesion breeding prevention apparatus of Claim 2 which added the L-shaped return part which produces the eddy current which returns warm seawater to the said sea chest. The marine organism adhesion reproduction prevention equipment according to claim 2 or 3 which carried out heat dissipation prevention work to the ship's inner side outer wall of said sea chest.