KR20180051934A - Cooling system for ship and ship having the same - Google Patents

Abstract

The present invention relates to a cooling system for a ship, and a ship having the same. The cooling system comprises: a seawater pump for pumping seawater using a cooler; a pure water line for providing a route of pure water circulating through the cooler, a main engine, a generator, and auxiliary equipment; a first pure water supplier disposed on the pure water line at a front end of the main engine and supplying the pure water to the main engine; and a second pure water supplier disposed on the pure water line at front ends of the generator and the auxiliary equipment and supplying the pure water to the generator and the auxiliary equipment.

Description

Technical Field [0001] The present invention relates to a cooling system for ships and a ship having the same,

The present invention relates to a ship cooling system and a ship having the same.

Generally, the ship is provided with a cooling system for cooling a heating device such as a main engine, a generator engine, etc. installed in the ship.

This cooling system is cooled through the heat exchange with seawater pumped by the seawater pump in the cooler while the fresh water for cooling the heat generator is circulating in the closed loop, and the cooled fresh water is pumped by the fresh water pump and supplied to the heat generator And has a cooling structure.

In recent years, there is a demand for energy saving in the ship. Since the power consumption of the pump is considerably high, the power consumption of the pump is reduced. In order to reduce the power consumption of the pump, A cooling system has been proposed.

Korean Patent Laid-Open Nos. 10-2010-0136151 and 10-2011-0002227 disclose a technique in which a temperature sensor is installed on a connecting pipe for supplying cooling water cooled by a cooler to an operation equipment, A method of reducing energy by reducing the load of the seawater pump by changing the rotation number of the seawater pump appropriately according to the value is disclosed.

However, in such a cooling system, the rotation number of the seawater pump is changed according to the temperature at the cooler outlet, but the clean water pump for forcibly circulating the clean water is provided to be constantly operated as the rated rotation speed, so that the energy saving effect becomes insignificant.

In order to solve this problem, Korean Patent Laid-Open Publication No. 10-2013-0053352 minimizes the power consumption of the fresh water pump by appropriately changing the number of revolutions of the fresh water pump for forcedly circulating fresh water according to the temperature difference value between the inlet and outlet of the cooler In addition, it is proposed to control the rotation speed of the fresh water pump and to reduce the power consumption of the seawater pump by appropriately changing the rotation speed of the sea water pump according to the outlet temperature value of the cooler.

However, the conventional cooling systems described above are designed such that the amount of heat generated by each device such as the main engine, the generator, and the auxiliary device is different, so that the load fluctuations of all the devices are different . As a result, there is a possibility that the influence of the load fluctuation of each device may be canceled. As a result, it is difficult to appropriately cope with the load fluctuation which is simultaneously and simultaneously fluctuated in each device by the set of the refreshing pump. There is a possibility that the device can not be operated normally because the cooling due to the load variation of each device is not properly performed.

Korean Patent Publication No. 2010-0136151 (Disclosure Date: December 28, 2010) Korean Published Patent Application No. 2011-0002227 (Published on January 07, 2011) Korean Patent Publication No. 10-2013-0053352 (published on May 23, 2013)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a system and method for supplying clean water in response to load fluctuations of respective devices such as a main engine, a generator, And to provide a ship cooling system and a ship having the ship cooling system, which can reduce the operating cost of the ship.

Another object of the present invention is to provide a ship cooling system and a ship having the ship cooling system, which can improve the operation efficiency of all devices by managing the temperature of fresh water supplied to the main engine separately from the temperature of fresh water supplied to the generator or the auxiliary equipment .

A marine cooling system according to one aspect of the present invention includes a sea water pump for pumping seawater to a cooler; A fresh water line providing a path of fresh water circulating between the cooler and the main engine, the generator, and the auxiliary device; A first fresh water supply unit provided on the fresh water line at a front end of the main engine and supplying fresh water to the main engine; And a second fresh water supply unit provided on the fresh water line at the front end of the generator and the auxiliary equipment, for supplying clean water to the generator and the auxiliary equipment.

Specifically, the fresh water line includes: a main fresh water line provided with the cooler; A first fresh water line branched from the main fresh water line and provided with the main engine and the first fresh water supply unit; A second fresh water line branched from the main fresh water line and provided with the generator and the second fresh water supply unit; And a third fresh water line branched from the second fresh water line and provided with the auxiliary device and the second fresh water supply part.

Specifically, the first fresh water temperature adjusting unit adjusts the fresh water temperature of the first fresh water supplying unit. A second fresh water temperature adjusting unit for adjusting the fresh water temperature of the second fresh water supplying unit; A fresh water merging section for merging the fresh water passed through the main engine, the generator and the auxiliary device, supplying the fresh water through the main fresh water line to the cooler, or supplying the fresh water to the first fresh water temperature adjusting section or the second fresh water temperature adjusting section .

Specifically, when the fresh water supplied from the cooler to the main engine is equal to or lower than a temperature range required by the main engine, the first fresh water temperature regulator may use fresh water joined to the fresh water merger, And the second fresh water temperature regulating unit controls the second fresh water temperature regulating unit so that the fresh water supplied from the cooler to the generator and the auxiliary equipment is below the temperature range required by the generator and the auxiliary equipment, It is possible to adjust the temperature to be within the temperature range required by the generator and the auxiliary equipment by using fresh water.

The first fresh water temperature control unit senses the temperature of fresh water supplied to the main engine, and the first fresh water temperature control unit senses the temperature of fresh water supplied to the main engine, And the first fresh water temperature information obtained by the sensed temperature to the seawater pump control unit so that the seawater pump control unit controls the rotation speed of the seawater pump, The second fresh water temperature control unit senses the temperature of clean water supplied to the generator or the auxiliary equipment and detects a second set temperature value required by the generator or the auxiliary equipment and a second set temperature value required by the generator or the auxiliary equipment, The fresh water temperature information may be provided to the seawater pump control unit so that the seawater pump control unit may adjust the rotation speed of the seawater pump.

Specifically, the generator further includes a generator control unit installed on the second fresh water line, which is separately connected to a front end of each of the plurality of generators so as to supply fresh water selectively to the plurality of generators .

Specifically, the first fresh water supply part includes a first fresh water pump provided in the first fresh water line at the front end of the main engine, and the second fresh water supply part is provided in the second fresh water line at the front end of the generator A second fresh water pump; And a third fresh water pump provided on the third fresh water line at a front end of the auxiliary device, wherein the first fresh water temperature regulating unit includes a first temperature regulating valve provided in the first fresh water line at a front end of the first fresh water pump, ; A bypass line having one end connected to the clean water merging portion and the other end connected to the first temperature control valve; A fifth temperature sensor for sensing a fifth temperature of fresh water flowing in order to cool the main engine; And adjusting the opening degree of the first temperature control valve in accordance with the first fresh water temperature information obtained by the first set temperature value and the fifth temperature or providing the first fresh water temperature information to the seawater pump control unit Wherein the second fresh water temperature regulating unit includes a second temperature regulating valve provided at the second fresh water line at the front end of the second and third fresh water pumps; The bypass line having one end connected to the clean water merging portion and the other end connected to the second temperature control valve; A sixth temperature sensor for sensing a sixth temperature of fresh water flowing in order to cool the generator and the auxiliary equipment; And adjusting the opening degree of the second temperature control valve in accordance with the second fresh water temperature information obtained by the second set temperature value and the sixth temperature or providing the second fresh water temperature information to the seawater pump control unit And a sixth controller, wherein the seawater pump control unit comprises: a first temperature sensor for sensing a first temperature of the seawater entering the cooler; A first frequency converter for adjusting the rotation speed of the seawater pump; And a first controller for controlling the number of revolutions of the seawater pump in correspondence to the first temperature and the first clear water temperature information or the first temperature and the second clear water temperature information, A control valve disposed on the second fresh water line downstream of the two fresh water pumps and individually connected to the front ends of the respective generators; And a seventh controller for selectively turning on / off the control valve depending on whether the generator is operating or not.

Specifically, the first fresh water supply section may include a first fresh water pump provided at the first fresh water line of the main engine, and the second fresh water supply section may include a second fresh water supply section, And a fourth fresh water pump provided in a third fresh water line, wherein the first fresh water temperature regulating unit includes: a first temperature regulating valve provided at the first fresh water line at a front end of the first fresh water pump; A bypass line having one end connected to the clean water merging portion and the other end connected to the first temperature control valve; A fifth temperature sensor for sensing a fifth temperature of fresh water flowing in order to cool the main engine; And adjusting the opening degree of the first temperature control valve in accordance with the first fresh water temperature information obtained by the first set temperature value and the fifth temperature or providing the first fresh water temperature information to the seawater pump control unit Wherein the second fresh water temperature regulating unit includes a second temperature regulating valve provided at the second fresh water line at a front end of the fourth fresh water pump; The bypass line having one end connected to the clean water merging portion and the other end connected to the second temperature control valve; A sixth temperature sensor for sensing a sixth temperature of fresh water flowing in order to cool the generator and the auxiliary equipment; And adjusting the opening degree of the second temperature control valve in accordance with the second fresh water temperature information obtained by the second set temperature value and the sixth temperature or providing the second fresh water temperature information to the seawater pump control unit And a sixth controller, wherein the seawater pump control unit comprises: a first temperature sensor for sensing a first temperature of the seawater entering the cooler; A first frequency converter for adjusting the rotation speed of the seawater pump; And a first controller for controlling the number of revolutions of the seawater pump in correspondence to the first temperature and the first clear water temperature information or the first temperature and the second clear water temperature information, A control valve disposed on the second fresh water line downstream of the two fresh water pumps and individually connected to the front ends of the respective generators; And a seventh controller for selectively turning on / off the control valve depending on whether the generator is operating or not.

Specifically, the first fresh water supply part includes a first fresh water pump provided in the first fresh water line at the front end of the main engine, and the second fresh water supply part is provided in the second fresh water line at the front end of the generator A second fresh water pump; And a third fresh water pump provided at the third fresh water line at a front end of the auxiliary device, and the second fresh water temperature adjusting portion includes a second fresh water temperature adjusting portion, Temperature control valve; A bypass line, one end of which is connected to the fresh water merging section or connected to the second fresh water line at the rear end of the generator, and the other end is connected to the second temperature regulating valve; A sixth temperature sensor for sensing a sixth temperature of fresh water flowing in order to cool the generator and the auxiliary equipment; And adjusting the opening degree of the second temperature control valve in accordance with the second fresh water temperature information obtained by the second set temperature value and the sixth temperature or providing the second fresh water temperature information to the seawater pump control unit And a sixth controller, wherein the seawater pump control unit comprises: a first temperature sensor for sensing a first temperature of the seawater entering the cooler; A first frequency converter for adjusting the rotation speed of the seawater pump; And a first controller for controlling the number of rotations of the seawater pump in correspondence with the first temperature and the second clear water temperature information, wherein the generator control unit is located downstream of the second fresh water pump, A control valve provided on the second fresh water line individually connected to the front end; And a seventh controller for selectively turning on / off the control valve depending on whether the generator is operating or not.

Specifically, a second temperature sensor senses a second temperature of the outlet water of the main engine; A second frequency converter for controlling the number of revolutions of the first fresh water pump; And a second controller for receiving the second temperature sensed by the second temperature sensor and controlling the number of revolutions of the first fresh water pump through the second frequency converter corresponding to the received second temperature .

Specifically, a third temperature sensor senses a third temperature of the outlet water of the generator; A third frequency converter for adjusting the number of revolutions of the second fresh water pump; And a third controller for receiving the third temperature sensed by the third temperature sensor and controlling the number of revolutions of the second fresh water pump through the third frequency converter corresponding to the received third temperature .

Specifically, a third temperature sensor senses a third temperature of the outlet water of the generator and the auxiliary device; A third frequency converter for controlling the number of revolutions of the fourth fresh water pump; And a third controller for receiving the third temperature sensed by the third temperature sensor and controlling the number of revolutions of the fourth fresh water pump through the third frequency converter corresponding to the received third temperature .

Specifically, a fourth temperature sensor senses a fourth temperature of the outlet water of the auxiliary device; A fourth frequency converter for controlling the number of revolutions of the third fresh water pump; And a fourth controller for receiving the fourth temperature sensed by the fourth temperature sensor and for controlling the number of revolutions of the third fresh water pump through the fourth frequency converter corresponding to the received fourth temperature .

A ship according to another aspect of the invention is characterized in that it comprises a cooling system as described above.

The ship cooling system and the ship having the same according to the present invention are provided with a first fresh water supply section in the main engine and a second fresh water supply section in the generator and the auxiliary device, It is possible to supply clean water independently in response to the fluctuation, so that the energy saving effect can be improved in the cooling system having the secondary cooling structure, and the operation cost of the ship can be reduced.

The present invention also provides a cooling system for a ship and a ship having the same, wherein a set of first fresh water pumps for supplying fresh water to the main engine is provided, and a second fresh water pump And the fourth fresh water pump that supplies the fresh water to the generator and the ancillary equipment integrally to provide the fresh water temperature to the generator and / So that the engine efficiency of the main engine can be increased and the operation efficiency of the generator and the auxiliary device can be increased.

The ship cooling system and the ship having the ship cooling system according to the present invention may further include a generator control unit including a control valve 261 and a controller 297 so as to selectively supply clean water according to whether the generator 20 is in operation, The efficiency of operation of the second fresh water pump 231 for supplying clear water to the generator 20 can be improved.

1 is a configuration diagram of a marine cooling system according to a first embodiment of the present invention.
2 is a configuration diagram of a marine cooling system according to a second embodiment of the present invention.
3 is a configuration diagram of a marine cooling system according to a third embodiment of the present invention.
4 is a configuration diagram of a marine cooling system according to a fourth embodiment of the present invention.
5 is a configuration diagram of a marine cooling system according to a fifth embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a marine cooling system according to a first embodiment of the present invention.

1, a cooling system 1 for a ship according to a first embodiment of the present invention includes a heating device such as a main engine 10, a generator 20, and an auxiliary device 30 installed on a ship The cooling water for cooling is cooled through heat exchange with seawater pumped by the seawater pump in the cooler while circulating through the fresh water line of the closed loop, and the cooled fresh water is pumped by the fresh water pump and supplied to the heating device, And may include a seawater supply device 100, a fresh water circulating device 200, and a cooler 300.

The seawater supply device 100 is an open type for introducing seawater, exchanging heat with fresh water circulating in a fresh water circulating device 200 to be described later, and discharging seawater heat exchanged with the fresh water, 120, a seawater inlet 130, and a seawater pump controller 140.

The seawater line 110 may provide a path through which the seawater flows through the seawater inlet 130 to be described later. On the seawater line 110, fresh water circulating the fresh water circulating apparatus 200, which will be described later, A cooler 300 to be described later may be provided so as to perform heat exchange.

The seawater pump 120 may be composed of at least two sets. The seawater pump 120 is provided on the seawater line 110 and pumps the seawater introduced through the seawater inlet 130 to be described later to the cooler 300, It is possible to provide a pumping force to be discharged to the outside of the hull.

The number of revolutions of the seawater pump 120 can be adjusted by the seawater pump control unit 140, which will be described later.

The seawater inlet 130 may be provided on at least one side of the hull so that seawater can be introduced into the seawater line 110 by the pumping power of the seawater pump 120.

The seawater pump control unit 140 can sense the seawater intake temperature and sets the temperature range of the seawater intake temperature sensed, the temperature of the fresh water supplied to the main engine 10, and the fresh water demanded by the main engine 10 The fresh water temperature information obtained by the set temperature value (for example, 10 占 폚 to 36 占 폚) may be provided from the first fresh water temperature regulating unit 250a to be described later or the detected fresh water temperature may be supplied to the generator 20 or the auxiliary equipment The fresh water temperature information obtained by the set temperature value (for example, 32 ° C to 36 ° C) in which the temperature of the fresh water supplied to the generator 20 or the auxiliary equipment 30 is set, Is provided from a second fresh water temperature regulating unit 250b, which will be described later, and the rotation number of the seawater pump 120 can be adjusted by using the information.

Specifically, when the main engine 10 is in operation, the rotation number of the seawater pump 120 can be adjusted using the seawater inlet temperature and fresh water temperature information provided from the first fresh water temperature regulator 250a, When the temperature of fresh water supplied to the main engine 10 exceeds the set temperature value required by the main engine 10, the number of revolutions of the seawater pump 120 is increased and the temperature of fresh water supplied to the main engine 10 The rotation speed of the seawater pump 120 is maintained while the temperature of the fresh water supplied to the main engine 10 is lower than the set temperature value required by the main engine 10 The rotation speed of the seawater pump 120 is reduced.

In addition, when the main engine 10 is shut down (for example, when the ship is berthing), using the seawater inlet temperature and fresh water temperature information provided from the second fresh water temperature regulator 250b to be described later, When the temperature of the fresh water supplied to the generator 20 or the auxiliary equipment 30 exceeds the set temperature value required by the generator 20 or the auxiliary equipment 30, When the temperature of the fresh water supplied to the generator 20 or the auxiliary equipment 30 is within the set temperature range required by the generator 20 or the auxiliary equipment 30, And when the temperature of the fresh water supplied to the generator 20 or the auxiliary equipment 30 is lower than the set temperature value required by the generator 20 or the auxiliary equipment 30, the rotation of the seawater pump 120 Decrease the number.

The seawater pump control unit 140 includes a first temperature sensor 271, a first frequency converter 281 and a first controller 291 shown in Figs. 2 to 5 for describing each of the second to fifth embodiments, respectively. ).

The seawater supply device 100 configured as described above allows the seawater to flow into the seawater line 110 through the seawater inlet 130 by the pumping force of the seawater pump 120 and to be discharged to the outside of the ship, Can cool the fresh water circulating in the fresh water circulating apparatus 200, which will be described later, while passing through the cooler 300.

The fresh water circulating apparatus 200 circulates the fresh water cooled by the seawater supplied from the seawater supply apparatus 100 while cooling the heat generating apparatuses such as the main engine 10, the generator 20, the auxiliary apparatus 30, A first fresh water line 211, a second fresh water line 212, a third fresh water line 213, a first fresh water supply unit 220, a second fresh water supply unit 230, A fresh water merging unit 240, a first fresh water temperature adjusting unit 250a, a second fresh water temperature adjusting unit 250b, and a generator control unit 260.

The main clean water line 210 is connected to the main engine 10 and the generator 20 through first, second and third clean water lines 211, 212 and 213 to be described later, The generator 20 and the ancillary equipment 30 to the clean water merging unit 240 which will be described later and then the cooler 300 As shown in FIG.

On this main fresh water line 210, a cooler 300 to be described later may be provided.

The first fresh water line 211 may be branched from the main fresh water line 210 at the rear end of the cooler 300 to be described later and extend to the clean water merging portion 240 to be described later, The fresh water is supplied to the main engine 10 by the first fresh water supply unit 220 to be described later and a route for supplying the heated fresh water passed through the main engine 10 to the fresh water merging unit 240 to be described later is provided .

On the first fresh water line 211, a first fresh water supply unit 220 may be provided to supply fresh water to the main engine 10.

The second fresh water line 212 may be branched from the main fresh water line 210 at the rear end of the cooler 300 to be described later and extend to the fresh water merging portion 240 to be described later, The fresh water can be supplied to the generator 20 by the second fresh water supply unit 230 to be described later and a path for supplying the heated fresh water via the generator 20 to the fresh water merging unit 240 to be described later .

On the second fresh water line 212, all or part of the second fresh water supply unit 230, which will be described later, can be provided to supply the fresh water to the generator 20.

The generator 20 is installed in the ship so that electricity can be produced and supplied to various customers of the ship. At this time, the second fresh water line 212 is connected to each of the generators 20 so as to supply clean water. A generator control unit 260 to be described later may be provided on the second fresh water line 212 individually connected to the front ends of the generators 20.

The third fresh water line 213 may be branched from the second fresh water line 212 at the rear end of the second fresh water supplying unit 230 and extend to the fresh water merging unit 240 to be described later, 2 fresh water line 212 and connected to the second fresh water line 212 at the rear end of the generator 20 and the fresh water cooled in the cooler 300 to be described later is connected to the second fresh water supply unit 230 It is possible to provide a path for feeding the heated fresh water passed through the auxiliary device 30 to the auxiliary device 30 and supplying it to the fresh water merging part 240 to be described later.

A part of the second fresh water supplying part 230 to be described below for supplying fresh water to the auxiliary device 30 may be provided on the third fresh water line 213 or a second fresh water supplying part 230 to be described later may not be provided on the third fresh water line 213 .

The first fresh water supply unit 220 may be provided on the first fresh water line 211 at the front end of the main engine 10 so as to supply fresh water cooled in the cooler 300 to be described later to the main engine 10. [ And may include a fresh water pump for the main engine 10. At least two or more of the fresh water pumps for the main engine 10 may be formed as one set.

The fresh water pump for the main engine 10 may be the first fresh water pump 221 shown in each of Figs. 2 to 5 for describing each of the second to fifth embodiments.

The second fresh water supply unit 230 is connected to the second fresh water line 212 at the front end of the generator 20 so that fresh water cooled by the cooler 300 to be described later can be supplied to the generator 20 and the auxiliary equipment 30, And a fresh water pump for the auxiliary device 30 or a fresh water pump for the auxiliary device 30 or may be provided on the third fresh water line 213 at the front end of the auxiliary device 30, And a fresh water pump combined with the device (30). At least two sets of the fresh water pump for the generator 20, the fresh water pump for the auxiliary device 30, and the fresh water pump for both the generator 20 and the auxiliary device 30 may be provided in one set.

The fresh water pump for the generator 20 may be the second fresh water pump 231 shown in Figs. 2, 4, and 5 for explaining the second, fourth, and fifth embodiments, respectively, The fresh water pump for the generator 30 may be the third fresh water pump 232 shown in each of Figs. 2, 4 and 5 for describing each of the second, fourth and fifth embodiments, And the auxiliary device 30 may be the fourth fresh water pump 233 shown in Fig. 3 for explaining the third embodiment.

The fresh water merging section 240 receives heated fresh water via the main engine 10, the generator 20 and the auxiliary device 30 through the first, second and third fresh water lines 211, 212 and 213 Can be joined.

The fresh water joined to the fresh water merging portion 240 can be supplied to the cooler 300 to be described later through the main fresh water line 210 and cooled.

The fresh water joined to the fresh water merging section 240 is supplied to the first fresh water temperature regulating section (the second fresh water temperature regulating section) so as to be adjusted to the cooling temperature required by the main engine 10, the generator 20, 250a or the second fresh water temperature regulating unit 250b to the first fresh water supplying unit 220 or the second fresh water supplying unit 230. [

The first fresh water temperature regulating unit 250a regenerates the cool fresh water supplied from the cooler 300 to be described later through the main fresh water line 210 and the first fresh water line 211 to the main engine 10 (The set temperature value), for example, 10 [deg.] C to 36 [deg.] C lower than the lower limit temperature 10 [deg.] C, And may be provided to be connected to the first fresh water line 211 at the front end of the first fresh water supply unit 220. The relatively high temperature fresh water combined at the fresh water merging unit 240 may be supplied from the cooler 300 To the relatively low temperature fresh water.

The first fresh water temperature regulating unit 250a senses the temperature of fresh water supplied to the main engine 10 when the main engine 10 is in operation and detects the fresh water temperature Information to the seawater pump control unit 140 so that the seawater pump control unit 140 can adjust the rotation speed of the seawater pump 120. [

When the fresh water supplied from the cooler 300 to be described later is lower than the temperature of the lower limit in the temperature range requested by the main engine 10, the first fresh water temperature regulator 250a firstly controls the seawater pump controller The main engine 10 is supplied with the cooling water from the cooler 300 even though the number of revolutions of the seawater pump 120 is reduced through the circulation pump 140 and the number of revolutions of the seawater pump 120 is reduced to the minimum operation speed If the cooled fresh water is lower than the temperature of the lower limit, it may be desirable to operate so as to reach the temperature range required by the main engine 10 by using the relatively high temperature fresh water combined at the fresh water merging portion 240.

The first fresh water temperature regulating unit 250a can be usefully used when the ship is operating at an extremity where the sea water temperature is 10 DEG C or less.

In the temperature range of 10 占 폚 to 36 占 폚 required by the main engine 10, the critical meaning of the 10 占 폚 lower limit line is that the lower the cool cool water supplied to the main engine 10, the lower the fuel consumption amount, Considering that the viscosity of the lubricating oil is increased when the temperature is below 10 ° C, the operation of the main engine 10 may be restricted. The critical meaning of the upper limit of 36 ° C is that, Considering the heat transfer efficiency of the cooler 300 as the maximum seawater temperature of 32 ° C in summer is applied, it is considered to set the temperature setting value of the low temperature cooling circuit to 36 ° C. The present embodiment is not limited to the temperature range required by the main engine 10, but may be selectively changed according to the design.

The first fresh water temperature regulating unit 250a includes a bypass line 251, a first temperature regulating valve 252, and a second temperature regulating valve 252 shown in Figs. 2 and 3 for describing each of the second and third embodiments, respectively. 5 temperature sensor 275 and a fifth controller 295. [

The second fresh water temperature regulating unit 250b is connected to the cooler 300 to be described later through the main fresh water line 210 and the second and third fresh water lines 212 and 213, When the cooled fresh water supplied to the generator 20 and auxiliary equipment 30 is lower than the lower limit temperature 32 deg. C at a temperature required by each of the generator 20 and the auxiliary equipment 30, for example, a temperature range (set temperature value) May be provided to be connected to the second fresh water line 212 at the previous stage of the second fresh water supply unit 230 so as to be adjusted to the cooling temperature required for the generator 20 and the auxiliary equipment 30, The relatively high temperature fresh water that is joined at the merging portion 240 or the relatively high temperature fresh water flowing through the second fresh water line 212 at the rear end of the generator 20 is supplied to the relatively cold fresh water supplied from the cooler 300 Mixed.

The second fresh water temperature regulating unit 250b senses the temperature of the fresh water supplied to the generator 20 or the auxiliary equipment 30 when the main engine 10 is shut down, Value to the seawater pump control unit 140 so that the seawater pump control unit 140 can adjust the number of revolutions of the seawater pump 120. [

The second fresh water temperature regulating unit 250b is configured such that when the cooled fresh water supplied from the cooler 300 to be described later is lower than the temperature of the lower limit in the temperature range requested by the generator 20 or the auxiliary equipment 30, The number of revolutions of the seawater pump 120 is reduced through the seawater pump control unit 140 and the number of revolutions of the seawater pump 120 is reduced from the cooler 300 to the generator 20 The generator 20 or the auxiliary device 30 uses the relatively high temperature fresh water combined in the fresh water merging section 240 to make a request from the generator 20 or the auxiliary device 30 when the cooled fresh water supplied to the auxiliary device 30 is lower than the lower limit temperature. Lt; RTI ID = 0.0 > temperature range. ≪ / RTI >

The critical significance of the 32 캜 lower limit and the 36 캜 upper limit in the temperature range of 32 캜 to 36 캜 required by each of the generator 20 and the ancillary equipment 30 is determined by the summer maximum Considering the heat transfer efficiency of the cooler 300 as the seawater temperature 32 ° C is applied, it is considered to set the temperature setting value of the low temperature cooling circuit to 36 ° C. The present invention is not limited to the temperature range required by each of the generator 20 and the auxiliary equipment 30, and may be selectively changed according to the design.

The second fresh water temperature regulating unit 250b includes the bypass line 251, the second temperature regulating valve 253, and the second temperature regulating valve 252 shown in Figs. 2 to 5 for describing each of the second to fifth embodiments, respectively. 6 temperature sensor 276 and a sixth controller 296. [

The generator control unit 260 controls the generator 20 such that the fresh water can be selectively supplied from among the plurality of generators 20 without supplying clean water to the generator that is not in operation, May be located downstream of the feeder 230 and may be provided on a second clean water line 212 that is separately connected to the front end of each generator 20.

The generator control unit 260 may be a control valve 261 and a seventh controller 297 shown in Figs. 2 to 5, respectively, for describing each of the second to fifth embodiments.

The cooler 300 circulates the relatively low temperature seawater supplied from the seawater supply device 100 and the fresh water circulated through the fresh water circulating device 200 so as to heat- May be provided on the seawater line 110 and on the main fresh water line 210 of the fresh water recirculation device 200.

Considering the design of the cooler 300 in consideration of the heat transfer efficiency of the cooler 300 as the maximum seawater temperature 32 ° C in summer is applied, Considering the lower limit of 10 占 폚 in the temperature range required by the main engine 10, the temperature of the outlet water for heat exchange with the seawater in the cooler 300 can be operated to be in a temperature range of 10 占 폚 to 36 占 폚 have.

That is, the temperature range of the outlet water purified through the heat exchange with the seawater in the cooler 300 may be the same as the temperature range required by the main engine 10 so as to maximize the engine efficiency of the main engine 10, The temperature range required by the generator 20 and the ancillary equipment 30 may be different from the temperature range required by each of the generator 20 and the ancillary equipment 30 through the second clear water temperature control unit 250b .

The cooling system 1 according to the present embodiment is configured to control the amount of heat generated by the heating device such as the main engine 10, the generator 20, the auxiliary device 30, In order to reduce the electrical energy of the ship, the first water supply unit 220 or the fresh water supply unit 230, which is included in the second water supply unit 230, may further include means for reducing the electrical energy of the ship by adjusting the number of revolutions. The number of revolutions of the pump can be adjusted, which will be described in detail with reference to Figs. 2 to 5 for explaining each of the second to fifth embodiments.

FIG. 2 is a configuration diagram of a marine cooling system according to a second embodiment of the present invention, FIG. 3 is a configuration diagram of a marine cooling system according to a third embodiment of the present invention, FIG. 5 is a configuration diagram of a marine cooling system according to a fifth embodiment of the present invention.

In each of the cooling systems 2, 3, 4, and 5 of the second to fifth embodiments to be described below, the same components are denoted by the same reference numerals, and the configuration related to the cooling system 1 of the first embodiment is also the same And reference numerals are used. Therefore, detailed description of each of the same components will be omitted.

2 is a configuration diagram of a marine cooling system 2 according to a second embodiment of the present invention. Like the marine cooling system 1 of the first embodiment described above, the sea water supply device 100, the fresh water circulating device 200, The first fresh water supply unit 220, the second fresh water supply unit 230, the first fresh water temperature control unit 140, the first fresh water supply unit 220, the first fresh water supply unit 230, and the fresh water temperature control unit 300 described in the first embodiment. The second fresh water temperature regulating unit 250b, and the generator control unit 260, respectively. Accordingly, the cooling system 2 of the second embodiment will be described with reference to the first embodiment.

The first temperature sensor 271, the first frequency converter 281 and the first controller 291 may correspond to the seawater pump control unit 140 described in the first embodiment, The number of revolutions of the motor 120 can be adjusted.

The first temperature sensor 271 may be installed on the inlet side seawater line 110 of the cooler 300 and may sense the first temperature of the seawater discharged from the seawater pump 120 and entering the cooler 300 And transmit the sensed first temperature to the first controller 291.

The first frequency converter 281 receives the predetermined control signal from the first controller 291 and controls the seawater pump 120 and the first controller (not shown) to adjust the rotation speed of the seawater pump 120 based on the control signal. 291).

The first controller 291 receives the first temperature sensed by the first temperature sensor 271 and senses the fifth temperature of fresh water supplied to the main engine 10 and the fresh water demanded by the main engine 10 The fresh water temperature information obtained by the set temperature value (for example, 10 占 폚 to 36 占 폚) in which the temperature range is set is supplied from the fifth controller 295 to be described later or supplied to the generator 20 or the auxiliary equipment 30 The fresh water temperature information obtained by the sixth temperature of the fresh water to be generated and the set temperature value (for example, 32 DEG C to 36 DEG C) in which the temperature range of fresh water required by the generator 20 or the auxiliary equipment 30 is set will be described later And the second controller 296 receives the first temperature, the fresh water temperature information provided from the fifth controller 295, or the received first temperature and the fresh water temperature information provided from the sixth controller 296, The number of rotations of the seawater pump 120 can be controlled through the frequency converter 281.

Specifically, when the main engine 10 is in operation, the rotation speed of the seawater pump 120 can be adjusted by using the first temperature and fresh water temperature information provided from the fifth controller 295 to be described later. When the fifth temperature of the fresh water supplied to the main engine 10 exceeds the set temperature value required by the main engine 10, the number of revolutions of the seawater pump 120 is increased, The rotation speed of the seawater pump 120 is maintained when the temperature is within the set temperature value range required by the main engine 10 and the fifth temperature of the fresh water supplied to the main engine 10 is maintained The rotation speed of the seawater pump 120 is reduced.

When the main engine 10 is stopped (for example, when the ship is berth), the seawater pump 120 is operated using the first temperature and the fresh water temperature information provided from the sixth controller 296, which will be described later. When the sixth temperature of the fresh water supplied to the generator 20 or the auxiliary equipment 30 exceeds the set temperature value required by the generator 20 or the auxiliary equipment 30, When the sixth temperature of fresh water supplied to the generator 20 or the auxiliary equipment 30 is within the set temperature value range required by the generator 20 or the auxiliary equipment 30, And when the temperature of the fresh water supplied to the generator 20 or the auxiliary equipment 30 is lower than the set temperature value required by the generator 20 or the auxiliary equipment 30, Reduce the number of revolutions.

The first fresh water pump 221 may be provided on the first fresh water line 211 at the front end of the main engine 10. The first fresh water pump 221 may be provided in the main engine 10 of the first fresh water supply unit 220, And may be applicable to fresh water pumps. Here, the first fresh water line 211 may be branched from the main fresh water line 210 at the rear end of the cooler 300 and extend to the fresh water merging portion 240.

The second fresh water pump 231 may be provided on the second fresh water line 212 at the front end of the generator 20 and may be provided in the second fresh water supplying unit 230 described in the first embodiment, It can be a pump. Here, the second fresh water line 212 may be branched from the main fresh water line 210 at the rear end of the cooler 300 and extend to the fresh water merging portion 240.

The third fresh water pump 232 may be provided on the third fresh water line 213 at the front end of the auxiliary device 30 and correspond to the fresh water pump for the auxiliary device 30 described in the first embodiment . Here, the third fresh water line 213 may be branched from the second fresh water line 212 at the front end of the second fresh water pump 231 to extend to the fresh water merging portion 240, 6 temperature sensor < RTI ID = 0.0 > 276. < / RTI >

The bypass line 251, the first temperature regulating valve 252, the fifth temperature sensor 275 and the fifth controller 295 correspond to the first fresh water temperature regulating unit 250a described in the first embodiment .

The bypass line 251 may be connected at one end to the fresh water merging section 240 and at the other end to the first temperature regulating valve 252 to be described later, May be provided to the main engine 10 through the first temperature control valve 252. The first temperature regulating valve 252 may be provided with a first temperature regulating valve 252,

The first temperature regulating valve 252 can regulate the flow rate so that the cooled fresh water supplied from the cooler 300 is within the temperature range required by the main engine 10. The first temperature regulating valve 252 is connected to the bypass line 251, And may be provided on the first fresh water line 211 at the front end of the pump 221. The first temperature regulating valve 252 may be a three-way valve.

The fifth temperature sensor 275 is installed on the first fresh water line 211 between the first fresh water pump 221 and the first temperature regulating valve 252 to cool the fresh water supplied to cool the main engine 10. [ And may transmit the sensed fifth temperature to the fifth controller 295. The fifth controller 295 may be operable to sense the first temperature and the second temperature.

The fifth controller 295 receives the fifth temperature sensed by the fifth temperature sensor 275 and determines the fresh water temperature information obtained based on the received fifth temperature and the set temperature value required by the main engine 10 The opening degree of the first temperature control valve 252 can be adjusted.

Specifically, when the received fifth temperature is lower than 10 占 폚, which is the temperature of the lower limit in the temperature range required by the main engine 10, for example, 10 占 폚 to 36 占 폚, the fifth controller 295, The opening of the first temperature regulating valve 252 can be appropriately adjusted so that the relatively high temperature fresh water merged in the fresh water merging section 240 flows into the first fresh water line 211 through the bypass line 251 The temperature of the fresh water supplied from the cooler 300 to the main engine 10 can be controlled to be within the cooling temperature range of fresh water required by the main engine 10. [

Further, the fifth controller 295 receives the fifth temperature sensed by the fifth temperature sensor 275, and generates a fresh water temperature < RTI ID = 0.0 > Information to the first controller 291 so as to adjust the number of revolutions of the seawater pump 120. [

The bypass line 251, the second temperature regulating valve 253, the sixth temperature sensor 276 and the sixth controller 296 correspond to the second fresh water temperature regulating unit 250b described in the first embodiment .

The bypass line 251 may be connected at one end to the fresh water merging section 240 and at the other end to the second temperature regulating valve 253 to be described later, Can be provided to the generator 20 and the auxiliary equipment 30 through the second temperature control valve 253, respectively.

The second temperature regulating valve 253 can regulate the flow rate so that the cooled fresh water supplied from the cooler 300 is within the temperature range required by the generator 20 or the auxiliary equipment 30, And may be provided on the second fresh water line 212 at the front end of the second and third fresh water pumps 231 and 232. The second temperature regulating valve 253 may be a three-way valve.

The sixth temperature sensor 276 is installed on the second fresh water line 212 between the second and third fresh water pumps 231 and 232 and the second temperature control valve 253, The controller may sense the sixth temperature of fresh water supplied to cool the second heater 30 and transmit the sensed sixth temperature to the sixth controller 296. [

The sixth controller 296 receives the sixth temperature sensed by the sixth temperature sensor 276 and determines the sixth temperature by the set temperature value required by the generator 20 and the auxiliary device 30 The opening degree of the second temperature regulating valve 253 can be adjusted corresponding to the obtained fresh water temperature information.

Specifically, the sixth controller 296 controls the sixth controller 296 so that the received sixth temperature is lower than the temperature required by the generator 20 and the auxiliary equipment 30, for example, 32 deg. C to 36 deg. It is possible to appropriately adjust the opening degree of the second temperature regulating valve 253 so that the relatively high temperature fresh water merged in the fresh water merging section 240 flows through the bypass line 251 to the second fresh water line The cooling water temperature of the generator 20 and the auxiliary equipment 30 is increased by increasing the temperature of the fresh water that flows into the generator 20 and the auxiliary equipment 30 from the cooler 300, Lt; / RTI >

The sixth controller 296 also receives the sixth temperature sensed by the sixth temperature sensor 276 when the main engine 10 is shut down and the sixth temperature sensed by the generator 20 and / The fresh water temperature information obtained by the set temperature value requested by the auxiliary device 30 is provided to the first controller 291 so that the rotation number of the seawater pump 120 can be adjusted.

The control valve 261 and the seventh controller 297 may correspond to the generator control unit 260 described in the first embodiment.

The control valve 261 is provided to selectively supply clean water from among the plurality of generators 20. For example, the control valve 261 may supply the clean water to only the activated generator, without supplying fresh water to the non- May be located downstream of the pump 231 and may be provided on a second clean water line 212 that is separately connected to the front end of each generator 20.

The seventh controller 297 can turn on / off the control valve 261 depending on whether the plurality of generators 20 are in operation. The control valve 261 may be closed and the corresponding control valve 261 may be opened to supply clean water to the generator being operated.

The cooling system 2 according to the second embodiment having the above-described configuration is configured so that the amount of heat generated when the amount of heat generated in the heat generating device such as the main engine 10, the generator 20, Accordingly, it is possible to further reduce the electric energy of the ship by adjusting the rotation speed of at least one of the first, second and third fresh water pumps 221, 231 and 232.

To this end, the cooling system 2 is provided with a second cooling system for cooling the main engine 10, the generator 20, the auxiliary equipment 30, and the second, third and fourth temperatures of the outlet- Second, third and fourth frequency converters 272, 273 and 274 for controlling the number of revolutions of the first, second and third clean water pumps 221, 231 and 232, Third, and fourth controllers 292, 293, and 294 for controlling the first, second, and third fresh water pumps 221, 231, and 232 based on the collected data, ).

The second temperature sensor 272 is installed on the first fresh water line 211 at the outlet side of the main engine 10 to sense the second temperature of the fresh water discharged after cooling the main engine 10, And transmit the second temperature to the second controller 292.

The second frequency converter 282 receives the predetermined control signal from the second controller 292 and controls the first fresh water pump 221 and the second fresh water pump 221 so as to adjust the rotation speed of the first fresh water pump 221 based on the control signal And may be installed between the second controller 292.

The second controller 292 receives the second temperature sensed by the second temperature sensor 272 and senses the first fresh water pump 221 through the second frequency converter 282 in response to the received second temperature. Can be controlled.

Specifically, the second controller 292 determines whether or not the received second temperature exceeds the set temperature value. Here, the set temperature value can be determined in consideration of the case where the temperature range of fresh water flowing into the main engine 10 is a value between 10 ° C and 36 ° C, and considering the amount of heat generated when the main engine 10 is driven at the maximum. It goes without saying that the set temperature value can be appropriately changed according to the surrounding conditions such as the type of the ship, the type of the main engine 10, the design of the cooling system 1, and the like.

The second controller 292 increases the number of revolutions of the first fresh water pump 221 through the second frequency converter 282 when the second temperature exceeds the set temperature value, The rotation speed of the first fresh water pump 221 is maintained as it is, and when the second temperature is lower than the set temperature value, the rotation speed of the first fresh water pump 221 through the second frequency converter 282 .

The third temperature sensor 273 is installed on the outlet second purified water line 212 of the generator 20 to sense the third temperature of the discharged fresh water after cooling the generator 20, Temperature to the third controller 293.

The third frequency converter 283 receives the predetermined control signal from the third controller 293 and controls the second fresh water pump 231 and the second fresh water pump 231 to adjust the rotation speed of the second fresh water pump 231 based on the control signal The third controller 293.

The third controller 293 receives the third temperature detected by the third temperature sensor 273 and controls the second fresh water pump 231 through the third frequency converter 283 in response to the received third temperature. Can be controlled.

Specifically, the third controller 293 determines whether the received third temperature exceeds the set temperature value. Here, the set temperature value may be determined in consideration of the case where the temperature range of fresh water flowing into the generator 20 is between 32 ° C and 36 ° C, and considering the amount of heat generated when the generator 20 is driven at the maximum. It goes without saying that the set temperature value can be appropriately changed according to the surrounding conditions such as the type of the ship, the type of the generator 20, the design of the cooling system 1, and the like.

The third controller 293 increases the number of revolutions of the second fresh water pump 231 through the third frequency converter 283 when the third temperature exceeds the set temperature value, The rotation speed of the second fresh water pump 231 is maintained as it is, and when the third temperature is lower than the set temperature value, the rotation speed of the second fresh water pump 231 through the third frequency converter 283 .

The fourth temperature sensor 274 detects the fourth temperature of the discharged fresh water after cooling the auxiliary device 30 on the third fresh water line 213 at the outlet side of the auxiliary device 30, And transmit the fourth temperature to the fourth controller 294.

The fourth frequency converter 284 receives the predetermined control signal from the fourth controller 294 and controls the third fresh water pump 232 and the third fresh water pump 232 to adjust the rotation number of the third fresh water pump 232 based on the control signal And may be installed between the fourth controller 294.

The fourth controller 294 receives the fourth temperature detected by the fourth temperature sensor 274 and controls the third refreshing pump 232 through the fourth frequency converter 284 in response to the received fourth temperature. Can be controlled.

Specifically, the fourth controller 294 determines whether the received fourth temperature exceeds the set temperature value. Here, the set temperature value can be determined in consideration of the case where the temperature range of fresh water flowing into the auxiliary device 30 is a value between 32 ° C and 36 ° C, and considering the amount of heat generated when the auxiliary device 30 is driven at the maximum. It goes without saying that the set temperature value can be appropriately changed according to the surrounding conditions such as the type of the ship, the type of auxiliary equipment 30, and the design details of the cooling system 1.

The fourth controller 294 increases the number of revolutions of the third fresh water pump 232 through the fourth frequency converter 284 when the fourth temperature exceeds the set temperature value, The rotation speed of the third fresh water pump 232 is maintained as it is, and when the fourth temperature is lower than the set temperature value, the rotation speed of the third fresh water pump 232 through the fourth frequency converter 284 .

3 is a configuration diagram of a ship cooling system 3 according to a third embodiment of the present invention. Like the cooling system 1 for a ship of the first embodiment described above, the seawater supply device 100, the fresh water circulation device 200, The first fresh water supply unit 220, the second fresh water supply unit 230, the first fresh water temperature control unit 140, the first fresh water supply unit 220, the first fresh water supply unit 230, and the fresh water temperature control unit 300 described in the first embodiment. The second fresh water temperature regulating unit 250b, and the generator control unit 260, respectively. Accordingly, the cooling system 3 of the third embodiment will be described with reference to the first embodiment, and a detailed description of the same components as those of the first embodiment or the second embodiment will be omitted.

The first temperature sensor 271, the first frequency converter 281 and the first controller 291 may correspond to the seawater pump control unit 140 described in the first embodiment, The detailed description thereof will be omitted.

The first fresh water pump 221 may be provided on the first fresh water line 211 at the front end of the main engine 10. The first fresh water pump 221 may be provided in the main engine 10 of the first fresh water supply unit 220, And may be applicable to fresh water pumps. Here, the first fresh water line 211 may be branched from the main fresh water line 210 at the rear end of the cooler 300 and extend to the fresh water merging portion 240.

The fourth fresh water pump 233 may be provided on the second fresh water line 212 and the third fresh water line 213 at the front ends of the generator 20 and the auxiliary device 30, It may correspond to a fresh water pump serving also as the generator 20 and the auxiliary device 30 of the second fresh water supply unit 230. Here, the second fresh water line 212 may be branched from the main fresh water line 210 at the rear end of the cooler 300 to the fresh water merging part 240, like the second fresh water line 212 of the second embodiment , The third fresh water line 213 is connected to the rear end of the fourth fresh water pump 233 and the other end is connected to the second fresh water line 212 at the rear end of the generator 20, Which is different from the third fresh water line 213.

The bypass line 251, the first temperature regulating valve 252, the fifth temperature sensor 275 and the fifth controller 295 correspond to the first fresh water temperature regulating unit 250a described in the first embodiment And is the same as the configuration described in the second embodiment, so that a detailed description of the same parts will be omitted.

The bypass line 251, the second temperature regulating valve 253, the sixth temperature sensor 276 and the sixth controller 296 correspond to the second fresh water temperature regulating unit 250b described in the first embodiment And is the same as the configuration described in the second embodiment, so that a detailed description of the same parts will be omitted. However, in the third embodiment, the fourth fresh water pump 233 is provided instead of the second and third fresh water pumps 231 and 232 in comparison with the second embodiment, .

The second temperature regulating valve 253 is structurally related to the fourth fresh water pump 233, that is, the second temperature regulating valve 253 is connected to the second temperature regulating valve 253 of the second embodiment Is different from that provided on the second fresh water line 212 at the front end of the fourth fresh water pump 233, and the rest are the same.

The control valve 261 and the seventh controller 297 correspond to the generator control unit 260 described in the first embodiment and are the same as those described in the second embodiment, .

The cooling system 3 according to the third embodiment having the above-described configuration is capable of controlling the amount of heat generated when the amount of heat generated in the heat generating device such as the main engine 10, the generator 20, Accordingly, it is possible to further reduce the electric energy of the ship by controlling the rotation speed of at least one of the first and fourth fresh water pumps 221 and 233.

To this end, the cooling system 3 is provided with a second, third and fourth cooling system for sensing the second and third temperatures of the outlet water of the main engine 10, the generator 20 and the auxiliary equipment 30, Second and third frequency converters 282 and 283 for controlling the rotational speeds of the temperature sensors 272 and 273 and the first and fourth fresh water pumps 221 and 233, The second and third controllers 292 and 293 for controlling the four fresh water pumps 221 and 233 may be further included. The detailed description of the same parts as those of the second embodiment is omitted, Will be explained concretely.

The second temperature sensor 272, the second frequency converter 282, and the second controller 292 are the same as those described in the second embodiment, and as will be understood from the description of the second embodiment, A description thereof will be omitted here.

The third temperature sensor 273 is installed on the outlet second purified water line 212 of the generator 20 like the third temperature sensor 273 of the second embodiment except that the third fresh water line 213 The third controller 293 senses the third temperature of the discharged clean water after cooling the generator 20 and the auxiliary device 30, Lt; / RTI >

The third frequency converter 283 receives the predetermined control signal from the third controller 293 and controls the fourth fresh water pump 233 and the fourth fresh water pump 233 so as to adjust the rotation number of the fourth fresh water pump 233 based on the control signal The third controller 293.

The third controller 293 receives the third temperature detected by the third temperature sensor 273 and controls the fourth fresh water pump 233 through the third frequency converter 283 in response to the received third temperature. Can be controlled.

Specifically, the third controller 293 determines whether the received third temperature exceeds the set temperature value. Considering the case where the temperature range of the fresh water flowing into the generator 20 and the auxiliary equipment 30 is a value between 32 DEG C and 36 DEG C, Can be determined in consideration of the amount of heat generated. It goes without saying that the set temperature value can be appropriately changed depending on the type of ship, the type of the generator 20 and the auxiliary equipment 30, the design conditions of the cooling system 1, and the like.

The third controller 293 increases the number of revolutions of the fourth fresh water pump 233 through the third frequency converter 283 when the third temperature exceeds the preset temperature value, The rotation speed of the fourth fresh water pump 233 is maintained as it is, and when the third temperature is lower than the set temperature value, the rotation speed of the fourth fresh water pump 233 through the third frequency converter 283 .

4 is a configuration diagram of a ship cooling system 4 according to a fourth embodiment of the present invention. Like the cooling system 1 for a ship of the first embodiment, the seawater supply device 100, the fresh water circulation device 200, The first fresh water supply unit 220, the second fresh water supply unit 230 and the second fresh water temperature control unit 140 described in the first embodiment, The generator control unit 250b, and the generator control unit 260, respectively. Accordingly, the cooling system 4 of the fourth embodiment will be described with reference to the first embodiment, and a detailed description of the same components as those of the first embodiment or the second embodiment will be omitted.

The first temperature sensor 271, the first frequency converter 281 and the first controller 291 may correspond to the seawater pump control unit 140 described in the first embodiment, The detailed description thereof will be omitted.

The first fresh water pump 221, the second fresh water pump 231 and the third fresh water pump 232 may correspond to the first and second fresh water supply units 220 and 230 described in the first embodiment, The second fresh water pump 231 and the third fresh water pump 232 described in the second embodiment are identical to those of the first fresh water pump 221, the second fresh water pump 231 and the third fresh water pump 232. Accordingly, Description thereof will be omitted.

The bypass line 251, the second temperature regulating valve 253, the sixth temperature sensor 276 and the sixth controller 296 correspond to the second fresh water temperature regulating unit 250b described in the first embodiment And is the same as the configuration described in the second embodiment, so that the description is omitted here.

The bypass line 251 of the fourth embodiment is connected only to the second temperature control valve 253 while the bypass line 251 of the second embodiment is connected to the first and second temperature control valves 252 and 253, The connection is different.

The control valve 261 and the seventh controller 297 correspond to the generator control unit 260 described in the first embodiment and are the same as those described in the second embodiment, .

The cooling system 4 according to the fourth embodiment having the above-described configuration is configured so that the amount of heat generated when the amount of heat generated in the heat generating device such as the main engine 10, the generator 20, Accordingly, it is possible to further reduce the electric energy of the ship by adjusting the rotation speed of at least one of the first, second and third fresh water pumps 221, 231 and 232.

To this end, the cooling system 4 is provided with a second cooling system for cooling the main engine 10, the generator 20 and the auxiliary equipment 30, respectively, and for detecting the second, third and fourth temperatures of the outlet- Second, third and fourth frequency converters 272, 273 and 274 for controlling the number of revolutions of the first, second and third clean water pumps 221, 231 and 232, Third, and fourth controllers 292, 293, and 294 for controlling the first, second, and third fresh water pumps 221, 231, and 232 based on the collected data, ).

Third, and fourth temperature sensors 272, 273 and 274, second, third and fourth frequency converters 282, 283 and 284 and second, third and fourth temperature sensors 272, 273 and 274 of the fourth embodiment Second, third and fourth frequency converters 282, 283 and 284 and the second, third and fourth temperature sensors 272, 273 and 274 described in the second embodiment, Second, third, and fourth controllers 292, 293, and 294 are the same as those of the first, second, third, and fourth controllers 292, 293, and 294 and will be understood as described in the second embodiment.

5 is a configuration diagram of a marine cooling system 5 according to a fifth embodiment of the present invention. Like the marine cooling system 1 of the first embodiment described above, the sea water supply device 100, the fresh water circulation device 200, The first fresh water supply unit 220, the second fresh water supply unit 230 and the second fresh water temperature control unit 140 described in the first embodiment, The generator control unit 250b, and the generator control unit 260, respectively. Accordingly, the cooling system 5 of the fifth embodiment will be described with reference to the first embodiment, and a detailed description of the same components as those of the first embodiment or the second embodiment will be omitted.

The first temperature sensor 271, the first frequency converter 281 and the first controller 291 may correspond to the seawater pump control unit 140 described in the first embodiment, The detailed description thereof will be omitted.

The first fresh water pump 221, the second fresh water pump 231 and the third fresh water pump 232 may correspond to the first and second fresh water supply units 220 and 230 described in the first embodiment, The second fresh water pump 231 and the third fresh water pump 232 described in the second embodiment are identical to those of the first fresh water pump 221, the second fresh water pump 231 and the third fresh water pump 232. Accordingly, Description thereof will be omitted.

The bypass line 251, the second temperature regulating valve 253, the sixth temperature sensor 276 and the sixth controller 296 may correspond to the second fresh water temperature regulating unit 250b in the first embodiment Since the connection configuration of the bypass line 251 is different from the configuration described in the second embodiment, the remaining configuration is the same, so that the description of the same configuration will be omitted here. .

The bypass line 251 of the fifth embodiment is connected only to the second temperature control valve 253 while the bypass line 251 of the second embodiment is connected to the first and second temperature control valves 252 and 253, The connection is different.

The bypass line 251 of the fifth embodiment is different from the bypass line 251 of the second embodiment in that one end is connected to the second fresh water line 212 at the rear end of the generator 20, The fresh water discharged from the generator 20 can be connected to the generator 20 and the auxiliary equipment 30 through the second temperature control valve 253. The second temperature control valve 253 can be connected to the second temperature control valve 253, It is possible to provide a path for supplying the gas.

One end of the bypass line 251 of the fifth embodiment is connected to the second refreshing line 212 of the rear end of the generator 20 while one end of the bypass line 251 of the second embodiment is connected to the clean water merging portion 240 The relatively high temperature fresh water discharged from the generator 20 is supplied to the generator 20 and the auxiliary equipment 30 relatively to the cooling water supplied from the cooler 300, It may be different to let it mix with cold fresh water.

The control valve 261 and the seventh controller 297 correspond to the generator control unit 260 described in the first embodiment and are the same as those described in the second embodiment, .

The cooling system 5 according to the fifth embodiment having the above-described configuration is configured so that the amount of heat generated when the amount of heat generated in the heat generating device such as the main engine 10, the generator 20, Accordingly, it is possible to further reduce the electric energy of the ship by adjusting the rotation speed of at least one of the first, second and third fresh water pumps 221, 231 and 232.

To this end, the cooling system 5 is provided with a second cooling system for cooling the main engine 10, the generator 20 and the auxiliary equipment 30, respectively, and for sensing the second, third and fourth temperatures of the outlet- Second, third and fourth frequency converters 272, 273 and 274 for controlling the number of revolutions of the first, second and third clean water pumps 221, 231 and 232, Third, and fourth controllers 292, 293, and 294 for controlling the first, second, and third fresh water pumps 221, 231, and 232 based on the collected data, ).

Third, and fourth temperature sensors 272, 273 and 274, second, third and fourth frequency converters 282, 283 and 284 and second, third and fourth temperature sensors 272, 273 and 274 of the fifth embodiment Second, third and fourth frequency converters 282, 283 and 284 and the second, third and fourth temperature sensors 272, 273 and 274 described in the second embodiment, Second, third, and fourth controllers 292, 293, and 294 are the same as those of the first, second, third, and fourth controllers 292, 293, and 294 and will be understood as described in the second embodiment.

As described above, in the present embodiment, the first fresh water supply section 220 is provided in the main engine 10, and the second fresh water supply section 230 is provided in the generator 20 and the auxiliary device 30, It is possible to supply fresh water independently in correspondence with the load fluctuation of each device such as the power generator 20, the auxiliary device 30 and the like, so that the energy saving effect can be improved in the cooling system 1 having the secondary cooling structure, The operation cost of the ship can be reduced.

The present embodiment is characterized in that a set of first fresh water pumps 221 for supplying fresh water to the main engine 10 is provided and the first fresh water pump 221 for supplying fresh water to the generator 20 and the auxiliary equipment 30 independently By providing the second fresh water pump 231 and the third fresh water pump 232 or by providing the fourth fresh water pump 233 for integrally supplying fresh water to the generator 20 and the auxiliary device 30, 10 can be managed separately from the temperature of fresh water supplied to the generator 20 and / or the auxiliary equipment 30, so that the engine efficiency of the main engine 10 can be increased, The operation efficiency of the generator 20 and the auxiliary equipment 30 can be increased.

The present embodiment includes the generator control unit 260 including the control valve 261 and the controller 297 so as to selectively supply clean water according to whether the plurality of generators 20 are in operation, The operating efficiency of the second fresh water pump 231 for supplying fresh water to the second fresh water pump 231 can be increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be apparent to those skilled in the art that various combinations and modifications may be made without departing from the scope of the present invention. Therefore, it should be understood that the technical contents related to the modifications and applications that can be easily derived from the embodiments of the present invention are included in the present invention.

1, 2, 3, 4, 5: cooling system 10: main engine
20: generator 30: auxiliary equipment
100: sea water supply device 110: sea water line
120: Seawater pump 130: Seawater inlet
140: Seawater pump control unit 200: Fresh water circulation device
210: main clean water line 211: first clean water line
212: second fresh water line 213: third fresh water line
220: first fresh water supply part 221: first fresh water pump
230: second fresh water supply part 231: second fresh water pump
232: third fresh water pump 233: fourth fresh water pump
240: fresh water merging section 250a: first fresh water temperature regulating section
250b: second fresh water temperature regulating unit 251: bypass line
252: first temperature control valve 253: second temperature control valve
260: generator control unit 261: control valve
271: first temperature sensor 272: second temperature sensor
273: third temperature sensor 274: fourth temperature sensor
275: fifth temperature sensor 276: sixth temperature sensor
281: first frequency converter 282: second frequency converter
283: Third frequency converter 284: Fourth frequency converter
291: first controller 292: second controller
293: third controller 294: fourth controller
295: fifth controller 296: sixth controller
297: seventh controller 300: cooler

Claims (14)

A seawater pump for pumping seawater to a chiller;
A fresh water line providing a path of fresh water circulating between the cooler and the main engine, the generator, and the auxiliary device;
A first fresh water supply unit provided on the fresh water line at a front end of the main engine and supplying fresh water to the main engine; And
And a second fresh water supply unit provided on the fresh water line at a front end of the generator and the auxiliary equipment and supplying fresh water to the generator and the auxiliary equipment. The water treatment system according to claim 1,
A main clean water line where the cooler is provided;
A first fresh water line branched from the main fresh water line and provided with the main engine and the first fresh water supply unit;
A second fresh water line branched from the main fresh water line and provided with the generator and the second fresh water supply unit; And
And a third fresh water line branched from the second fresh water line and provided with the auxiliary equipment and the second fresh water supply unit. 3. The method of claim 2,
A first fresh water temperature adjusting unit for adjusting a fresh water temperature of the first fresh water supplying unit;
A second fresh water temperature adjusting unit for adjusting the fresh water temperature of the second fresh water supplying unit;
A fresh water merging section for merging the fresh water passed through the main engine, the generator and the auxiliary device, supplying the fresh water through the main fresh water line to the cooler, or supplying the fresh water to the first fresh water temperature adjusting section or the second fresh water temperature adjusting section Further comprising the steps of: The method of claim 3,
The first fresh water temperature adjusting unit may include:
And adjusting the temperature of the main engine to a desired temperature range using the fresh water joined to the fresh water merging unit when the fresh water supplied from the cooler to the main engine is below the temperature range required by the main engine,
The second fresh water temperature regulating unit includes:
Wherein when the fresh water supplied from the cooler to the generator and the auxiliary equipment is below the temperature range required by the generator and the auxiliary equipment, So as to control the cooling of the ship. 5. The method of claim 4,
Further comprising a seawater pump controller for sensing a seawater inlet temperature and regulating the number of revolutions of the seawater pump,
The first fresh water temperature adjusting unit may include:
Wherein the control unit senses the temperature of clean water supplied to the main engine and provides the first set temperature value which is a temperature range required by the main engine and the first fresh water temperature information obtained by the sensed temperature to the seawater pump control unit, The seawater pump control unit controls the rotation speed of the seawater pump,
The second fresh water temperature regulating unit includes:
And a second set temperature value which is a temperature range required by the generator or the auxiliary equipment and second fresh water temperature information obtained by the sensed temperature, And the control unit controls the seawater pump control unit to control the rotation speed of the seawater pump. 6. The generator according to claim 5,
A plurality of units are installed,
Further comprising a generator control unit installed on the second fresh water line which is connected to the front end of each of the generators so as to selectively supply fresh water to the plurality of generators. The method according to claim 6,
Wherein the first fresh water supply unit comprises:
And a first fresh water pump provided at the first fresh water line in the front end of the main engine,
The second fresh water supply unit
A second fresh water pump provided at the second fresh water line at a front end of the generator; And
And a third fresh water pump provided on the third fresh water line at a front end of the auxiliary device,
The first fresh water temperature adjusting unit may include:
A first temperature control valve provided at the first fresh water line at a front end of the first fresh water pump;
A bypass line having one end connected to the clean water merging portion and the other end connected to the first temperature control valve;
A fifth temperature sensor for sensing a fifth temperature of fresh water flowing in order to cool the main engine; And
A control unit for controlling the opening degree of the first temperature control valve in correspondence with the first clear water temperature information obtained by the first set temperature value and the fifth temperature or for providing the first clear water temperature information to the seawater pump control unit 5 controller,
The second fresh water temperature regulating unit includes:
A second temperature control valve provided at the second fresh water line in front of the second and third fresh water pumps;
The bypass line having one end connected to the clean water merging portion and the other end connected to the second temperature control valve;
A sixth temperature sensor for sensing a sixth temperature of fresh water flowing in order to cool the generator and the auxiliary equipment; And
And a control unit for controlling the opening degree of the second temperature control valve in correspondence with the second clear water temperature information obtained by the second set temperature value and the sixth temperature or providing the second clear water temperature information to the seawater pump control unit 6 controller,
The seawater pump control unit includes:
A first temperature sensor for sensing a first temperature of the seawater entering the cooler;
A first frequency converter for adjusting the rotation speed of the seawater pump; And
And a first controller for controlling the number of rotations of the seawater pump in correspondence to the first temperature and the first clear water temperature information or the first temperature and the second clear water temperature information,
The generator control unit includes:
A control valve located on the second fresh water line downstream of the second fresh water pump and individually connected to the front ends of the respective generators; And
And a seventh controller for selectively turning on / off the control valve depending on whether the generator is in operation or not. The method according to claim 6,
Wherein the first fresh water supply unit comprises:
And a first fresh water pump provided at the first fresh water line in the front end of the main engine,
The second fresh water supply unit
And a fourth fresh water pump provided at the second and third fresh water lines at the front end of the auxiliary device and the generator,
The first fresh water temperature adjusting unit may include:
A first temperature control valve provided at the first fresh water line at a front end of the first fresh water pump;
A bypass line having one end connected to the clean water merging portion and the other end connected to the first temperature control valve;
A fifth temperature sensor for sensing a fifth temperature of fresh water flowing in order to cool the main engine; And
A control unit for controlling the opening degree of the first temperature control valve in correspondence with the first clear water temperature information obtained by the first set temperature value and the fifth temperature or for providing the first clear water temperature information to the seawater pump control unit 5 controller,
The second fresh water temperature regulating unit includes:
A second temperature control valve provided at the second fresh water line at a front end of the fourth fresh water pump;
The bypass line having one end connected to the clean water merging portion and the other end connected to the second temperature control valve;
A sixth temperature sensor for sensing a sixth temperature of fresh water flowing in order to cool the generator and the auxiliary equipment; And
And a control unit for controlling the opening degree of the second temperature control valve in correspondence with the second clear water temperature information obtained by the second set temperature value and the sixth temperature or providing the second clear water temperature information to the seawater pump control unit 6 controller,
The seawater pump control unit includes:
A first temperature sensor for sensing a first temperature of the seawater entering the cooler;
A first frequency converter for adjusting the rotation speed of the seawater pump; And
And a first controller for controlling the number of rotations of the seawater pump in correspondence to the first temperature and the first clear water temperature information or the first temperature and the second clear water temperature information,
The generator control unit includes:
A control valve located on the second fresh water line downstream of the second fresh water pump and individually connected to the front ends of the respective generators; And
And a seventh controller for selectively turning on / off the control valve depending on whether the generator is in operation or not. The method according to claim 6,
Wherein the first fresh water supply unit comprises:
And a first fresh water pump provided at the first fresh water line in the front end of the main engine,
The second fresh water supply unit
A second fresh water pump provided at the second fresh water line at a front end of the generator; And
And a third fresh water pump provided on the third fresh water line at a front end of the auxiliary device,
The second fresh water temperature regulating unit includes:
A second temperature control valve provided at the second fresh water line in front of the second and third fresh water pumps;
A bypass line, one end of which is connected to the fresh water merging section or connected to the second fresh water line at the rear end of the generator, and the other end is connected to the second temperature regulating valve;
A sixth temperature sensor for sensing a sixth temperature of fresh water flowing in order to cool the generator and the auxiliary equipment; And
And a control unit for controlling the opening degree of the second temperature control valve in correspondence with the second clear water temperature information obtained by the second set temperature value and the sixth temperature or providing the second clear water temperature information to the seawater pump control unit 6 controller,
The seawater pump control unit includes:
A first temperature sensor for sensing a first temperature of the seawater entering the cooler;
A first frequency converter for adjusting the rotation speed of the seawater pump; And
And a first controller for controlling the number of rotations of the seawater pump corresponding to the first temperature and the second clear water temperature information,
The generator control unit includes:
A control valve located on the second fresh water line downstream of the second fresh water pump and individually connected to the front ends of the respective generators; And
And a seventh controller for selectively turning on / off the control valve depending on whether the generator is in operation or not. 10. A method according to any one of claims 7, 8 and 9,
A second temperature sensor for sensing a second temperature of the outlet water of the main engine;
A second frequency converter for controlling the number of revolutions of the first fresh water pump; And
And a second controller for receiving the second temperature sensed by the second temperature sensor and controlling the number of revolutions of the first fresh water pump through the second frequency converter corresponding to the received second temperature And the cooling system of the ship. 10. The method according to any one of claims 7 to 9,
A third temperature sensor for sensing a third temperature of the outlet water of the generator;
A third frequency converter for adjusting the number of revolutions of the second fresh water pump; And
And a third controller for receiving the third temperature sensed by the third temperature sensor and controlling the number of revolutions of the second fresh water pump through the third frequency converter corresponding to the received third temperature And the cooling system of the ship. 9. The method of claim 8,
A third temperature sensor for sensing a third temperature of the outlet water of the generator and the auxiliary device;
A third frequency converter for controlling the number of revolutions of the fourth fresh water pump; And
And a third controller for receiving the third temperature sensed by the third temperature sensor and controlling the number of revolutions of the fourth fresh water pump through the third frequency converter corresponding to the received third temperature And the cooling system of the ship. 10. The method according to any one of claims 7 to 9,
A fourth temperature sensor for sensing a fourth temperature of the outlet water of the auxiliary device;
A fourth frequency converter for controlling the number of revolutions of the third fresh water pump; And
And a fourth controller for receiving the fourth temperature sensed by the fourth temperature sensor and controlling the number of revolutions of the third fresh water pump through the fourth frequency converter corresponding to the received fourth temperature And the cooling system of the ship. A ship equipped with the cooling system according to any one of claims 1 to 9 and 12.

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