Low-temperature cooling water device of ship
A cooling water, low temperature technology, applied in the direction of hull ventilation/heating/cooling, ship propulsion, propulsion engine, etc., can solve the problems of increasing the cost of equipment maintenance and repair, affecting the safety of ship navigation, increasing the cost of the main engine, etc., to avoid The increase in the cost of the main engine, the avoidance of pipeline leakage, and the effect of compact structure
Active Publication Date: 2018-09-11
SHANGHAI MERCHANT SHIP DESIGN & RES INST
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Problems solved by technology
[0009] The disadvantage of this solution is that it is necessary to add two seawater cooling pumps dedicated to the main engine
The material of the host air cooler needs to be changed to seawater corrosion-resistant materials (such as duplex stainless steel), which will increase the cost of the host and prolong the delivery time
And after the main engine is used for a long time, it is prone to pipeline leakage caused by seawater corrosion, which will affect the safety of ship navigation and increase the cost of equipment maintenance and repair
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[0024] A preferred embodiment will be given below, and the present invention will be described more clearly and completely in conjunction with the accompanying drawings.
[0025] Such as figure 1 As shown, a low-temperature cooling water device for a ship includes an equipment return pipe 100 , a first central fresh water cooler 10 and a second central fresh water cooler 20 . figure 1 In , the direction of the arrow is the direction of freshwater flow.
[0026] The first central fresh water cooler 10 is provided with a first water inlet pipe 11 and a first water outlet pipe 12 . The second central fresh water cooler 20 is provided with a second water inlet pipe 21 and a second water outlet pipe 22 .
[0027] Both the first water inlet pipe 11 and the second water inlet pipe 21 communicate with the return water pipe 100 of the equipment.
[0028] The first water inlet pipe 11 is provided with a first butterfly valve 31 and a first ventilation pipe 41 , and the first ventilat...
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The invention discloses a low-temperature cooling water device of a ship. The low-temperature cooling water device comprises an equipment water return pipe, a first central fresh water cooler, a second central fresh water cooler, a first temperature control valve, a second temperature control valve, a first temperature sensor, a second temperature sensor, a first water inlet pipe, a first water outlet pipe, a second water inlet pipe, a second water outlet pipe, a first butterfly valve, a second butterfly valve, a third butterfly valve, a fourth butterfly valve, a first low-temperature water pipe and a second low-temperature water pipe. The set temperature of the first temperature control valve is 36 DEG C. The set temperature of the second temperature control valve is 10 DEG C. A check valve is arranged on the first water outlet pipe and located between the second butterfly valve and the first low-temperature water pipe. The second low-temperature water pipe is communicated with the first water outlet pipe, and the connecting point of the second low-temperature water pipe and the first water outlet pipe is located between the check valve and the second butterfly valve. According tothe low-temperature cooling water device of the ship, the requirement that cooling water with the temperature of 10 DEG C is adopted in a main engine, and cooling water with the temperature of 36 DEGC is adopted in other equipment in a system is met.
Description
technical field [0001] The invention relates to the technical field of ships, in particular to a low-temperature cooling water device for ships. Background technique [0002] The main engine manufacturer with a market share of 70% issued a circular requesting that the set point of the cooling water temperature of the main engine air cooler be lowered to 10°C in order to reduce the risk of acid corrosion of the main engine cylinder liner and at the same time reduce the fuel consumption of the main engine . This requirement is enforced for mainframe orders effective after 2015. [0003] The design principle of the ship's central cooling water is as follows: the fresh water cooling water is transferred to each equipment by the cooling water pump for cooling. The fresh water cooling water that has participated in the heat exchange performs heat exchange with the seawater from the outboard in the central cooler, so that the fresh water cooling water is lowered to an appropriate...
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IPC IPC(8): B63H21/38B63J2/12
CPCB63H21/38B63J2/12
Inventor 高晶徐麟王翊杨军
Owner SHANGHAI MERCHANT SHIP DESIGN & RES INST