KR20130049985A - The dual temperature fresh water cooled cooling system for the vessel - Google Patents

The dual temperature fresh water cooled cooling system for the vessel Download PDF

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Publication number
KR20130049985A
KR20130049985A KR1020110115080A KR20110115080A KR20130049985A KR 20130049985 A KR20130049985 A KR 20130049985A KR 1020110115080 A KR1020110115080 A KR 1020110115080A KR 20110115080 A KR20110115080 A KR 20110115080A KR 20130049985 A KR20130049985 A KR 20130049985A
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KR
South Korea
Prior art keywords
fresh water
water
cooling
unit
temperature
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Application number
KR1020110115080A
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Korean (ko)
Inventor
오석민
김충식
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대우조선해양 주식회사
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Priority to KR1020110115080A priority Critical patent/KR20130049985A/en
Publication of KR20130049985A publication Critical patent/KR20130049985A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F01P3/207—Cooling circuits not specific to a single part of engine or machine liquid-to-liquid heat-exchanging relative to marine vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/02—Marine engines

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

PURPOSE: A system for dualizing the temperature of cooling water for a vessel is provided to reduce fuel consumption of a diesel engine and to reduce the size of some equipment using the cooling water. CONSTITUTION: A system for dualizing the temperature of cooling water for a vessel comprises a seawater circulating unit, a clean water circulating unit, a clean water cooling unit, a supply temperature controlling unit, cooling water usage equipment, a clean water branch circulating unit, and cooling water sub usage equipment. The seawater circulating unit continuously supplies seawater for a heat exchange. The clean water circulating unit circulates cooling water cooled by the heat exchange. The clean water cooling unit lowers the temperature of clean water by a heat exchange between the seawater of the seawater circulating unit and the clean water of the clean water circulating unit. The supply temperature controlling unit controls the supply temperature of the clean water cooled by passing through the clean water cooling unit. The cooling water usage equipment utilizes the clean water which temperature is controlled at predetermined temperature as the cooling water. [Reference numerals] (AA) Cooling water consumption facility; (BB) Auxiliary cooling water consumption facility

Description

The Dual Temperature Fresh Water Cooled Cooling System for the Vessel

The present invention relates to a ship cooling water supply temperature dualization system, and more particularly, by additionally configuring a separate fresh water cooling circulation system in which the temperature of the fresh water, which is the fresh water, is changed according to the temperature condition of the sea water, thereby lowering the fuel consumption rate of the diesel engine and cooling water. The present invention relates to a marine cooling water supply temperature dualization system that can reduce the size of some equipment that consumes fuel.

Generally, the ship cooling system applied in most ships corresponds to the constant temperature fresh water cooling system which supplies the fresh water to the equipment by maintaining the constant temperature of the fresh water at all times regardless of the temperature change of the sea water.

As shown in FIG. 1, the conventional constant temperature fresh water cooling system includes a sea water circulation unit, a fresh water circulation unit, a fresh water cooling unit, a supply temperature control unit, and a cooling water consumption facility. The seawater circulation unit provides a continuous supply of seawater through the sea chest (52), the seawater pipe (52) for supplying seawater introduced through the sea chest through the sea chest (50) for the inflow of sea water; A seawater circulation pump 54 is implemented, and an overboard connection 56 for discharging the heated seawater through the fresh water cooling unit to the sea.

The fresh water circulation unit is a fresh water circulating unit circulating the cooling water cooled in the fresh water cooling unit between the fresh water cooling unit and the cooling water consumption facility, and a fresh water circulation to realize a continuous flow of cooling water through the fresh water conduit 58. A pump 60 is provided. The fresh water cooling unit comprises a centralized heat exchanger 62 to lower the temperature of the fresh water through heat exchange between the seawater flowing through the seawater pipe 52 and the fresh water flowing through the freshwater pipe 58.

The supply temperature control unit is a cooling water supplied to the fresh water pipe (58) through the cooling water supplied through the output terminal of the centralized heat exchanger 62 corresponding to the fresh water cooling unit and the fresh water heated through the cooling water consumption facility. It consists of a temperature control valve 64 for maintaining the temperature of the appropriate temperature (about 36 degrees Celsius). At this time, the fresh water pipe 18 is provided with a temperature detection sensor 66 for measuring the temperature of the cooling water, the temperature controller 68 is a cooling water in accordance with the temperature of the cooling water detected through the temperature detection sensor 66 And the degree of mixing between the fresh water and the heated state.

The cooling water consumption facility corresponds to various equipment elements of the ship that receives the cooling water provided through the fresh water pipe 58 through the temperature control valve 64 and appropriately utilizes the cooling water, to the main engine 70 of the ship. An example is the air cooler 72 that cools the air that is installed and taken in.

Therefore, in the conventional constant temperature fresh water cooling system, all the coolant cooled in the centralized heat exchanger 62 is provided to the air cooler 72 of the main engine 70 after passing through the temperature control valve 64. At this time, the temperature of the cooling water supplied to the air cooler 72 is always set higher than the output terminal of the centralized heat exchanger (62). As a result, the cooling temperature of all the equipment requiring the cooling water is designed based on the cooling water of 36 degrees Celsius, so that the design capacity of the cooling water consumption facility is set accordingly.

However, when considering that the higher the temperature of the coolant supplied to the air cooler 72 of the main engine 70, the cycle fuel consumption rate increases (when the coolant temperature rises 10 ° C, the fuel consumption rate increases by 0.6%). There is a need for development of a coolant dual supply system capable of keeping the temperature of the coolant as low as possible separately from the constant temperature fresh water cooling system that provides the coolant 72 with the proper temperature at all times.

Accordingly, the present invention has been made in view of the above-mentioned matters, and improves the constant temperature fresh water cooling system of the ship to add a separate fresh water cooling circulation system for lowering the temperature of the cooling water supplied according to the temperature conditions of the sea water, This aims to reduce the fuel consumption of onboard diesel engines and to reduce the size of some equipment consuming cooling water.

The present invention for achieving the above object is a fresh water cooling unit for the continuous supply of seawater for heat exchange, fresh water circulation for the supply of cooling water, fresh water cooling for heat exchange between the sea water and the fresh water circulation of the fresh water circulation And a supply temperature adjusting unit for adjusting a supply temperature of the fresh water cooled through the fresh water cooling unit, a cooling water consumption facility utilizing fresh water adjusted to a constant temperature through the supply temperature adjusting unit as cooling water, and an output end of the fresh water cooling unit and the It is characterized in that it comprises a fresh water basin circulation unit is installed between the supply temperature control unit, and the cooling water auxiliary consumption facility utilizing the fresh water provided through the fresh water basin circulation unit as the cooling water.

In the present invention, the sea water circulation unit is a sea chest pipe is installed to continuously supply the sea chest and the sea water introduced through the sea chest, the sea chest, the sea water circulation is installed for the supply of sea water from the sea water pipe And an overboard connection for discharging the seawater heated through the fresh water cooling unit to the sea.

In the present invention, the fresh water circulation unit is installed between the fresh water cooling unit and the cooling water consumption facility and a fresh water pipe for circulating the cooling water cooled through heat exchange by the fresh water cooling unit, and for supply of fresh water from the fresh water pipe. It is characterized by comprising a fresh water circulation pump is installed.

In the present invention, the fresh water cooling unit is characterized in that the centralized heat exchanger to lower the temperature of the fresh water through heat exchange between the seawater flowing through the seawater pipe and the fresh water flowing through the freshwater pipe.

In the present invention, the fresh water basin circulation portion is branched between the output end of the centralized heat exchanger and the supply temperature control unit of the fresh water pipe line and comprises a fresh water branch pipe line for installing an orifice for equal distribution of flow rate in the pipe line. It is done.

In the present invention, the supply temperature control unit is a three-way valve, the temperature control for mixing the cooling water supplied through the output terminal of the centralized heat exchanger and the fresh water in the heated state through the cooling water consumption equipment and the cooling water auxiliary consumption equipment A valve, a temperature detection sensor for detecting a temperature of the cooling water passing through the temperature control valve, and a temperature controller for controlling opening and closing of the temperature control valve based on the temperature of the cooling water detected through the temperature detection sensor. It is done.

According to the ship cooling water supply temperature dualization system according to the present invention, the lower the cooling water supplied to the air cooler of the diesel engine is supplied from the fresh water cooling unit in the region where the temperature of the sea water is low in consideration of the lower fuel consumption rate in the engine. Low temperature cooling water without the temperature control unit can be supplied to the air cooler of the diesel engine to improve the fuel consumption rate of the vessel.

In addition, the present invention can supply the low-temperature cooling water to some of the equipment in the state without passing the supply temperature control unit from the fresh water cooling unit, it is possible to improve the cooling efficiency of the low-temperature cooling water through the improvement of the set capacity for each equipment using the cooling water It is possible to reduce the size of equipment due to the reduction.

1 is a view showing the configuration of a conventional constant temperature fresh water cooling system.
2 is a view showing the configuration of a ship cooling water supply temperature dualization system according to the present invention.

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

As shown in Figure 2, the present invention is a system for dualizing the supply temperature of the cooling water, a seawater circulation unit for continuously supplying seawater for cooling the fresh water, supplying fresh water cooled through heat exchange with seawater and heated Fresh water circulating unit for circulating fresh water for recooling of fresh water, fresh water cooling unit for implementing heat exchange between the fresh water circulating through the seawater circulation unit and fresh water circulating through the fresh water circulation unit, and the fresh water cooled through the fresh water cooling unit. Supply temperature control unit for supplying the fresh water circulating unit and then supplying the fresh water circulated to a constant level through the supply temperature control unit, cooling water consumption equipment to be used as cooling water, etc., the output stage of the fresh water cooling unit and the supply Fresh water basin circulation unit is installed to be separately branched between the temperature control unit; And a cooling water auxiliary consumption facility for receiving fresh water provided through the fresh water basin circulation unit and using the fresh water as cooling water.

The seawater circulation unit is a sea chest tube (12) which is installed to continuously supply the sea water introduced through the sea chest and the sea chest introduced through the sea chest through the sea chest (10) formed for the inflow of sea water from the hull Seawater circulation pump 14 is installed for the continuous supply of seawater in the seawater pipe line 12, and the overboard connection installed on the upper deck of the hull to discharge the seawater heated through the fresh water cooling unit to the sea ( 16).

The fresh water circulation unit is provided between the fresh water cooling unit and the cooling water consumption facility to circulate the cooling water cooled by heat exchange by the fresh water cooling unit, and the fresh water pipe 18 is installed in the fresh water pipe 18. A fresh water circulation pump 20 is provided to realize continuous flow of fresh water through the conduit 18.

The fresh water cooling unit is a kind of heat exchanger, and a centralized heat exchanger for lowering the temperature of the fresh water through heat exchange between the seawater flowing through the seawater pipe 12 and the fresh water flowing through the freshwater pipe 18. 22).

The fresh water basin circulation part is a fresh water branch pipe line 24 connected to the fresh water pipe line 18 so as to be separately branched between the output terminal of the centralized heat exchanger 22 and the supply temperature control unit among the fresh water pipe lines 18. Is done.

The supply temperature control unit is in the form of a three-way valve, the cooling water supplied through the output terminal of the centralized heat exchanger 22 corresponding to the fresh water cooling unit and the state of being heated through the cooling water consumption equipment and the cooling water auxiliary consumption equipment By mixing fresh water, it consists of a temperature control valve 26 for selectively supplying only the cooling water heated to an appropriate temperature (about 36 degrees Celsius) to the fresh water pipe 18.

In this case, the temperature of the cooling water passing through the temperature control valve 26 is detected by the temperature detection sensor 28 installed in the fresh water pipe 18, the temperature control valve 26 of the temperature controller 30 The opening and closing is adjusted according to the operation. That is, the temperature controller 30 adjusts the opening and closing of the temperature control valve 26 appropriately based on the temperature of the coolant detected by the temperature detection sensor 28 to output the output of the centralized heat exchanger 22. Through controlling the degree of mixing between the cooling water provided through the cooling water and the cooling water consumption facility and the cooling water auxiliary consumption facility, respectively, the fresh water in the heated state to ensure that the cooling water of the appropriate temperature is always supplied through the fresh water pipe (18). .

In addition, an orifice (24a) is provided in the fresh water branch pipe line 24, the flow rate of fresh water supplied to the fresh water branch pipe line 24 through the fresh water pipe line 18 and supplied to the temperature control valve (26). Implement an even distribution of the fresh water flow. That is, the orifice 24a lowers the flow pressure of the outlet side of the fresh water basin pipe 24 to a level corresponding to the pressure drop of the fresh water flowing through the temperature control valve 26, and thereby the fresh water pipe 18 and the fresh water. It serves to evenly distribute the flow rate of fresh water flowing through the branch pipe (24).

The cooling water consumption equipment corresponds to various equipment elements of the ship that receives the cooling water provided through the fresh water pipe 18 through the temperature control valve 26 and appropriately utilizes the cooling water. A facility element that utilizes lower temperature fresh water supplied through the output end of the centralized heat exchanger 22 without passing through the control valve 26, and cools the air that is installed in the main engine 32 of the ship For example, the air cooler 34 to make.

Therefore, in the ship cooling water supply temperature dualization system according to the present invention, the cooling water in a low temperature state without passing through the temperature control valve 26 among the cooling water provided to the fresh water pipe 18 through the output terminal of the centralized heat exchanger 22 is Since it can be supplied to the fresh water branch pipe line 24 it is possible to reduce the size of the equipment according to the improvement of the heat exchange efficiency made in the cooling water auxiliary consumption equipment.

In particular, low-temperature cooling water may be supplied to the air cooler 34 of the main engine 32 corresponding to one of the cooling water auxiliary consumption facilities through the fresh water branch conduit 24 so that the fuel consumption rate of the main engine 32 may be reduced. Can be lowered. That is, in the marine cooling water supply temperature dualization system of the present invention, assuming that the winter seawater temperature is 5 ° C, the fuel consumption rate can be reduced by up to 1.6% compared to the existing constant temperature fresh water cooling system.

In other words, the lower the temperature of the coolant supplied to the air cooler 34 in the diesel engine corresponding to the main engine of the ship, the lower the fuel consumption rate of the engine can be realized. The fuel consumption rate of the ship can be greatly improved if the system has a system for lowering the temperature of the fuel cell to a temperature lower than that currently applied and supplying it to the air cooler 34 of the main engine 32.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the particular details of the embodiments set forth herein. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

10-sea chest 12-sea pipeline
14-water pump 16-overboard connection
18-Clean water line 20-Clean water circulation pump
22-Heat exchanger 24-Clean water basin
26-Temperature Control Valve 28-Temperature Detection Sensor
30-temperature controller 32-main engine
34-air cooler

Claims (6)

A cooling water supply temperature binary system for ships,
A fresh water circulation unit for supplying seawater for heat exchange, a fresh water circulation unit for supplying cooling water, a fresh water cooling unit for heat exchange between seawater of the seawater circulation unit and fresh water of the fresh water circulation unit, and a fresh water cooled through the fresh water cooling unit Supply temperature control unit for controlling the supply temperature, a cooling water consumption facility utilizing the fresh water adjusted to a constant temperature through the supply temperature control unit as the cooling water, fresh water basin is installed between the output terminal of the fresh water cooling unit and the supply temperature control unit Cooling water supply temperature dualization system for a ship, characterized in that it comprises a circulation portion, and a cooling water auxiliary consumption facility utilizing the fresh water provided through the fresh water basin circulation as a cooling water. The method according to claim 1,
The seawater circulation unit is a sea chest of the sea water pipe 12, the sea water pipe 12 is installed to continuously supply the sea water introduced through the sea chest through the sea chest 10, the sea chest tube 12 A marine cooling water supply temperature dualization system, comprising: a seawater circulation pump (14) installed for supply, and an overboard connection (16) for discharging the heated seawater through the fresh water cooling unit to the sea. The method according to claim 2,
The fresh water circulation unit is provided between the fresh water cooling unit and the cooling water consumption facility to supply fresh water from the fresh water pipe 18 and the fresh water pipe 18 for circulating the cooled coolant through heat exchange by the fresh water cooling unit. Cooling water supply temperature dualization system for ships, characterized in that it comprises a fresh water circulation pump 20 is installed for. The method according to claim 3,
The fresh water cooling unit is a marine heat exchanger 22 for lowering the temperature of the fresh water through heat exchange between the sea water flowing through the sea water pipe 12 and the fresh water flowing through the fresh water pipe 18. Cooling water supply temperature dualization system. The method of claim 4,
The fresh water basin circulation section is a fresh water basin pipe branched between the output terminal of the centralized heat exchanger 22 and the supply temperature control unit in the fresh water pipe line 18 and providing an orifice 24a for equal distribution of flow rates in the pipe line. The cooling water supply temperature dualization system for ships characterized by consisting of a furnace (24). The method of claim 4,
The supply temperature control unit 26 is a temperature control valve 26 for mixing the cooling water supplied through the output terminal of the centralized heat exchanger 22 and the fresh water in the heated state through the cooling water consumption equipment and the cooling water auxiliary consumption equipment, The opening and closing of the temperature control valve 26 is controlled by the temperature detection sensor 28 for detecting the temperature of the cooling water passing through the temperature control valve 26, and the temperature of the cooling water detected through the temperature detection sensor 28. A temperature control system for ship cooling water, characterized in that it comprises a temperature controller (30).
KR1020110115080A 2011-11-07 2011-11-07 The dual temperature fresh water cooled cooling system for the vessel KR20130049985A (en)

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KR1020110115080A KR20130049985A (en) 2011-11-07 2011-11-07 The dual temperature fresh water cooled cooling system for the vessel

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KR1020110115080A KR20130049985A (en) 2011-11-07 2011-11-07 The dual temperature fresh water cooled cooling system for the vessel

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170089278A (en) 2016-01-26 2017-08-03 대우조선해양 주식회사 Cooling system for marine main and auxiliary engine
KR20180091514A (en) 2017-02-07 2018-08-16 대우조선해양 주식회사 Cooling system for fresh water and ship having the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170089278A (en) 2016-01-26 2017-08-03 대우조선해양 주식회사 Cooling system for marine main and auxiliary engine
KR20180091514A (en) 2017-02-07 2018-08-16 대우조선해양 주식회사 Cooling system for fresh water and ship having the same

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