KR20090006272A - Cooling water system of ships engine room - Google Patents

Cooling water system of ships engine room Download PDF

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Publication number
KR20090006272A
KR20090006272A KR1020070069441A KR20070069441A KR20090006272A KR 20090006272 A KR20090006272 A KR 20090006272A KR 1020070069441 A KR1020070069441 A KR 1020070069441A KR 20070069441 A KR20070069441 A KR 20070069441A KR 20090006272 A KR20090006272 A KR 20090006272A
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KR
South Korea
Prior art keywords
fresh water
cooling
pump device
consumer
temperature
Prior art date
Application number
KR1020070069441A
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Korean (ko)
Inventor
배홍대
Original Assignee
대우조선해양 주식회사
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Application filed by 대우조선해양 주식회사 filed Critical 대우조선해양 주식회사
Priority to KR1020070069441A priority Critical patent/KR20090006272A/en
Publication of KR20090006272A publication Critical patent/KR20090006272A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/12—Heating; Cooling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)

Abstract

The present invention relates to a cooling water system of a ship engine room, and more particularly, to a cooling water system capable of preventing waste of power consumption by applying a variable speed pump motor capable of adjusting the amount of cooling water of a cooling system.

According to the present invention, a plurality of consumers (100); A central fresh water cooling device (200) having one end of the consumer (100) connected through a first temperature converter (TT1) (110); Fresh water pump device 300 is connected to the other end of the consumer 100 through a second temperature converter (TT2) (120); The fresh water pump device 300 is connected to the central fresh water cooling device 200 through the second pressure transducer (PT1) 420 and the three-way valve 330, and through the first pressure transducer (PT1) (420) Presents a cooling water system of a ship engine room, characterized in that consisting of; seawater pump device 400 is connected to the central fresh water cooling device (200).

Description

Cooling water system of ships engine room

1 is a configuration diagram of a cooling water system of a conventional ship engine room.

2 is a configuration diagram of a cooling water system of a ship engine room according to the present invention.

<Description of Symbols for Major Parts of Drawings>

100: consumer 200: central fresh water cooling device

300: fresh water pump device 400: sea water pump device

The present invention relates to a cooling water system in a ship engine room. More specifically, the present invention relates to a cooling water system capable of preventing waste of power by applying a variable speed pump motor capable of adjusting the amount of cooling water in the cooling system.

Today, as the industry develops and the times change, the scale of ships is gradually increasing in size and speed. In order to meet the technological change of the ship, all three factors such as buoyancy, loadability, and mobility must be satisfied. Especially, the essential core technology is a large power propulsion device.

Therefore, in the past, the focus was on the structural aspects of propellers, which are propulsion devices, focusing on the speed of ships, but in recent years, due to the increase in size and speed of ships, cavitation, ie, vibration noise phenomenon, has become a new problem. There is a situation.

In addition, due to the action of another external environmental factors that interfere with the propeller, the situation is making the cavitation even worse.

Looking at an example of the cavitation deterioration caused by the external environmental factors in more detail, a vessel employing a steam turbine as the main engine is provided with a cooling system for circulating the coolant as a facility for preventing the engine overheating, The vessel cooled by the engine discharges the coolant out of the hull through an outlet formed on one side of the stern.

1 is a configuration diagram of a cooling water system of a conventional ship engine room.

1, a plurality of consumers 10; A central fresh water cooling device having a plurality of valves 22 and connected to the consumer 10; A fresh water pump device 30 connected to the consumer 10 and the central fresh water cooling device 20; And a seawater pump device 40 connected to the central fresh water cooling device 20 through a first pressure switch PS1 42.

At this time, the fresh water pump device 30 is connected with a temperature display controller (TIC) 32, a temperature converter (TT) 34 and a second pressure switch (PS2) 36.

The cooling water system of the conventional vessel engine room supplies the cooling sea water to the central fresh water cooling device 20 to operate the sea water pump of the rated operation, and measures the temperature of the fresh water pump to supply the cooling water supplied from the central fresh water cooling device 20. To control the flow through the three-way valve.

In addition, the cooling water system operates with a rated operation and a bypass function through a valve controller regardless of seawater temperature.

That is, the conventional cooling water system is to adjust the amount of cooling water (cooling water) required in the cooling unit (cooling unit) through the rated operation of the pump (pump) and the bypass valve (by-pass valve).

Therefore, the conventional cooling water system of the ship is a situation in which energy consumption due to the operation of the pump due to the configuration that can not automatically adjust the amount of cooling water.

If a device capable of automatically adjusting the amount of cooling water can be configured, waste of power can be prevented, thereby reducing the operating cost of the ship.

Accordingly, the present invention is to solve the above problems, an object of the present invention by applying a variable speed pump motor that can adjust the amount of cooling water required in the cooling device to prevent waste of power consumption to reduce the operating cost of the ship To provide a cooling water system in a ship engine room.

According to the present invention as a technical idea for achieving the above object of the present invention, a plurality of consumers (consumer) (100); A central fresh water cooling device (200) having one end of the consumer (100) connected through a first temperature converter (TT1) (110); Fresh water pump device 300 is connected to the other end of the consumer 100 through a second temperature converter (TT2) (120); The fresh water pump device 300 is connected to the central fresh water cooling device 200 through the second pressure transducer (PT1) 420 and the three-way valve 330, and through the first pressure transducer (PT1) (420) Presents a cooling water system of a ship engine room, characterized in that consisting of; seawater pump device 400 is connected to the central fresh water cooling device (200).

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

2 is a configuration diagram of a cooling water system of a ship engine room according to the present invention.

2, the present invention provides a plurality of consumer (100); A central fresh water cooling device (200) having one end of the consumer (100) connected through a first temperature converter (TT1) (110); Fresh water pump device 300 is connected to the other end of the consumer 100 through a second temperature converter (TT2) (120); The fresh water pump device 300 is connected to the central fresh water cooling device 200 through the second pressure transducer (PT1) 420 and the three-way valve 330, the first pressure transducer (PT1) (420) Consists of; seawater pump device 400 is connected to the central fresh water cooling device 200 through.

At this time, the fresh water pump device 300 and the sea water pump device 400 is provided with a variable frequency drive (VFD) motor 310, 410, respectively. In addition, M connected to the three-way valve 330 represents a motor or a high pressure control valve.

The central fresh water cooling device 200 circulates fresh water required for cooling the cooling system, and the fresh water pump device 300 sucks fresh water using the power of the engine, and the sea water pump device 400 is an engine. It uses the power of to inhale sea water (sea water).

The present invention having the above structure supplies cooling seawater to the central fresh water cooling device 200 through the operation of the seawater pump device 400 of the variable speed operation, and measures the temperature of the consumer 100 and the central fresh water cooling device 200. By controlling the variable speed of the fresh water pump device 300 to adjust the amount of cooling fresh water.

Next, the seawater control process of the ship engine room cooling water system according to the present invention will be described.

First, the temperature is measured through the set fresh water temperature (S1) of the central fresh water cooling apparatus 200 and the first temperature converter (TT1) of the consumer 100.

At this time, the difference between the temperature measured by the discharge fresh water temperature (S1) and the first temperature converter (TT1) of the central fresh water cooling apparatus 200 is set.

If the difference between the discharge fresh water temperature S1 of the set central fresh water cooling device 200 and the temperature measured by the first temperature converter TT1 is the same, the control direction of the three-way valve 330 is bypassed (approximately). 100% open) to control the seawater pump device 400.

If the difference between the discharge fresh water temperature S1 of the set central fresh water cooling device 200 and the temperature measured by the first temperature converter TT1 is greater than 0, the control direction of the three-way valve 330 is bypassed. By doing so, the seawater pump device 400 is controlled.

If the difference between the discharge fresh water temperature S1 of the set central fresh water cooling device 200 and the temperature measured by the first temperature converter TT1 is less than 0, the control direction of the three-way valve 330 is set to the central fresh water. By opening to the cooling device 200 to control the sea water pump device (400).

Thereafter, cooling seawater is controlled by variable frequency driving (VFD) of the seawater pump device 400 according to the open state (%) of the three-way valve 330.

At this time, the first pressure transducer (PT1) is compared with the set target pressure value, and if greater than the set target pressure value to adjust the amount of cooling water through the main sea water pump device (400).

If it is smaller than the set Mokpo pressure value, the amount of cooling water is adjusted through the main / secondary seawater pump device 400.

Next, look at the fresh water control process of the vessel cooling water system according to the present invention.

First, the temperature is measured through a plurality of consumer (100) discharged fresh water temperature (S1) and the second temperature converter (TT2) of the consumer (100).

In this case, the difference between the temperatures measured by the set consumer (100) discharge fresh water temperature (S1) and the second temperature converter (TT2).

If the difference between the temperatures measured by the set of consumer 100 discharge fresh water temperature S1 and the second temperature converter TT2 is the same, the amount of cooling fresh water is adjusted through the rated operation of the fresh water pump. Done.

If the difference between the temperatures measured by the set of consumer 100 discharge fresh water temperature S1 and the second temperature converter TT2 is greater than 0, the speed is reduced through variable speed control of the fresh water pump. The amount of cooling fresh water will be adjusted.

If the difference between the temperatures measured through the set of consumer 100 discharge fresh water temperature S1 and the second temperature converter TT2 is smaller than 0, the speed is increased through variable speed control of the fresh water pump. The amount of cooling fresh water will be adjusted.

At this time, the second pressure transducer (PT2) is compared with the set target pressure value, and if greater than the set target pressure value to adjust the amount of cooling water through the main fresh water pump device (300).

If less than the set target pressure value, the amount of cooling fresh water is adjusted through the primary / secondary fresh water pump device 300.

As described above, although preferred embodiments of the present invention have been described, the present invention is not limited to the specific preferred embodiments described above, and the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Anyone of ordinary skill in the art can make various modifications, as well as such changes can be included within the technical scope of the claims.

As described above, according to the present invention, in the case of a ship operating in an area with low seawater temperature, the amount of cooling water is required to be relatively smaller than the amount of cooling water required for operation in an area with high seawater temperature. The operation cost of the ship can be reduced by reducing the power.

Claims (3)

A plurality of consumers 100; A central fresh water cooling device (200) having one end of the consumer (100) connected through a first temperature converter (TT1) (110); Fresh water pump device 300 is connected to the other end of the consumer 100 through a second temperature converter (TT2) (120); The fresh water pump device 300 is connected to the central fresh water cooling device 200 through the second pressure transducer (PT1) 420 and the three-way valve 330, and through the first pressure transducer (PT1) (420) Cooling water system of the ship engine room, characterized in that consisting of ;; the central fresh water cooling device (200) is connected to the sea water pump device (400). The cooling water system of claim 1, wherein the fresh water pump device and the sea water pump device each have a variable frequency drive (VFD) motor (310) (410). According to claim 1, Cooling sea water is supplied to the central fresh water cooling apparatus 200 through the operation of the seawater pump device 400 of the variable speed operation, the temperature of the consumer 100 and the central fresh water cooling device 200 Cooling water system of the ship engine room, characterized in that by adjusting the amount of cooling fresh water by the variable speed control of the fresh water pump device 300 by measuring.
KR1020070069441A 2007-07-11 2007-07-11 Cooling water system of ships engine room KR20090006272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070069441A KR20090006272A (en) 2007-07-11 2007-07-11 Cooling water system of ships engine room

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070069441A KR20090006272A (en) 2007-07-11 2007-07-11 Cooling water system of ships engine room

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103085962A (en) * 2011-10-27 2013-05-08 中集船舶海洋工程设计研究院有限公司 Cooling system of self-elevating type ocean platform
CN103448899A (en) * 2013-08-27 2013-12-18 洛阳双瑞精铸钛业有限公司 Central cooling system for ship
CN105539804A (en) * 2015-12-24 2016-05-04 中国船舶重工集团公司第七0四研究所 Frequency converting control system and control method suitable for central cooling system of ship
KR20160114326A (en) 2015-03-24 2016-10-05 대우조선해양 주식회사 Cooling Water System of Engine Room on Ship
KR20180006060A (en) * 2016-07-08 2018-01-17 대우조선해양 주식회사 Scavenge Air Cooling System for Ship
CN109795662A (en) * 2019-03-05 2019-05-24 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） The water cooling system and its adjusting method and ship of ship
CN111483583A (en) * 2020-04-14 2020-08-04 中国舰船研究设计中心 Variable working condition adjusting system and method for two-loop cooling water system
CN112572752A (en) * 2020-11-27 2021-03-30 沪东中华造船(集团)有限公司 Frequency conversion energy-saving method for marine seawater cooling pump

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103085962A (en) * 2011-10-27 2013-05-08 中集船舶海洋工程设计研究院有限公司 Cooling system of self-elevating type ocean platform
CN103448899A (en) * 2013-08-27 2013-12-18 洛阳双瑞精铸钛业有限公司 Central cooling system for ship
KR20160114326A (en) 2015-03-24 2016-10-05 대우조선해양 주식회사 Cooling Water System of Engine Room on Ship
CN105539804A (en) * 2015-12-24 2016-05-04 中国船舶重工集团公司第七0四研究所 Frequency converting control system and control method suitable for central cooling system of ship
KR20180006060A (en) * 2016-07-08 2018-01-17 대우조선해양 주식회사 Scavenge Air Cooling System for Ship
CN109795662A (en) * 2019-03-05 2019-05-24 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） The water cooling system and its adjusting method and ship of ship
CN109795662B (en) * 2019-03-05 2024-01-19 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） Water cooling system of ship, adjusting method of water cooling system and ship
CN111483583A (en) * 2020-04-14 2020-08-04 中国舰船研究设计中心 Variable working condition adjusting system and method for two-loop cooling water system
CN112572752A (en) * 2020-11-27 2021-03-30 沪东中华造船(集团)有限公司 Frequency conversion energy-saving method for marine seawater cooling pump

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