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Method and system for controlling frequency conversion of marine sea water cooling system

A cooling system and frequency conversion control technology, applied in the direction of hull ventilation/heating/cooling, ship components, ship construction, etc., can solve problems such as waste of ship seawater cooling system, achieve low cost, reduce initial installation cost, and reduce the number of effects.

Active Publication Date: 2017-01-04
上海斯达瑞船舶海洋工程服务有限公司
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Problems solved by technology

Therefore, the instant control of automatic frequency conversion control is a waste of configuration for the marine seawater cooling system

Method used

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  • Method and system for controlling frequency conversion of marine sea water cooling system
  • Method and system for controlling frequency conversion of marine sea water cooling system

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Embodiment Construction

[0028] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0029] refer to figure 1 As shown, the marine seawater cooling system frequency conversion control method of the present invention comprises the following steps:

[0030] S1. Detect the seawater temperature at the water inlet and water outlet of the central cooler, and calculate the temperature difference; the calculation of the temperature difference can be performed by means of manual difference calculation;

[0031] S2. Determine whether the temperature difference exceeds the set temperature range. If it is higher than the set temperature range, manually increase the flow of cooling sea water; if it is lower than the set temperature range, man...

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Abstract

The invention discloses a method for controlling frequency conversion of a marine sea water cooling system. The method comprises the following steps: S1, detecting the temperature of sea water at the water inlet position and the water outlet position of a central cooler and calculating temperature difference; S2, judging whether the temperature difference exceeds a set temperature range, manually increasing the flow of cooling sea water if the temperature difference is higher than the temperature set range, manually reducing the flow of the cooling sea water if the temperature difference is less than the temperature set range, and not changing the flow of the cooling sea water if the temperature difference is in the temperature set range; S3, detecting the temperature of outlet water at a main cooling sea water outlet; S4, judging whether the outlet water temperature is higher than a first set value, sending out alarm prompt for manually increasing the flow of the cooling sea water if the outlet water temperature is higher than the first set value, and executing the step S5 if the outlet water temperature is less than the first set value; S5, judging whether the outlet water temperature is less than a second set value, and sending out alarm prompt for manually reducing the flow of the cooling sea water if the outlet water temperature is less than the second set value. By the method, the initial installation cost of equipment is effectively reduced, energy can be effectively saved, and maintenance is simple.

Description

technical field [0001] The invention relates to the technical field of seawater cooling systems, in particular to a frequency conversion control method and system for marine seawater cooling systems. Background technique [0002] At present, the marine seawater cooling system and engine room ventilation system adopt automatic frequency conversion technology. For example, the main components of the seawater cooling system frequency conversion control system include: frequency conversion drive unit, control unit, man-machine interface, temperature and pressure sensors. The temperature sensor is installed on the seawater side inlet and outlet pipelines and the freshwater side inlet and outlet pipelines of the central cooler, and the pressure sensor is installed on the inlet and outlet pipelines of the seawater vehicle of the central cooler. The temperature and pressure sensors provide the required analog signals of temperature and pressure, and the signals are transmitted to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63J2/12B63J2/06
CPCB63J2/06B63J2/12
Inventor 陆昌荣张艳张华平孙兴利陈永福李泽耀李学
Owner 上海斯达瑞船舶海洋工程服务有限公司
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