船舶中央冷却水多段比值控制系统设计  

Design of Multiple Ratio Control System of Ship Central Cooling Water

作　　者：王永祥[1] 张建平 张锐琳 钟展金 邹福顺 WANG Yongxiang;ZHANG Jianping;ZHANG Ruilin;ZHONG Zhanjin;ZOU Fushun(Guangzhou Maritime University, Guangzhou 510725, China;Guangzhou Wenchong Shipyard Co., Ltd., Guangzhou 510725, China)

机构地区：[1]广州航海学院,广州510725 [2]广州文冲船厂有限责任公司,广州510725

出　　处：《船舶工程》2018年第5期72-76,共5页Ship Engineering

基　　金：广州市科技计划项目(201707010453);广东省科技计划项目(2017B010118002);广东省大学生科技创新培育专项资金(pdjh2018b0385)

摘　　要：针对目前国内船舶中央冷却水系统普遍存在能耗高的问题,提出一种依据三通阀开度变化的实时改变海水变频泵组转速的控制策略。将三通阀开度分为4个区段,每个区段对应1个比值函数,根据比值函数和三通阀开度计算出变频泵组对应的频率。此外,增加smith滞环比较器作为开关函数,避免变频器在安全温度界限附近频繁切换频率对系统产生冲击。试验证明,提出的控制策略不仅实现了海水泵变频节能控制,保证系统稳定、可靠运行,而且显著降低了系统能耗。Aiming at the problem of high energy consumption in the ship central cooling water system at present, a control strategy based on the variation of triple valve opening is proposed to change the speed of seawater pump in real time. The triple valve opening is divided into four sections, each section corresponding to a ratio function. According to the ratio function and the triple valve opening, the corresponding frequency of the frequency conversion pump set is calculated. The smith hysteresis comparator is used as a switching function to avoid the frequency switching frequently near the safe temperature limit. The experiment proves that the proposed control strategy not only achieves frequency conversion and energy saving control of seawater pump, but also ensures stable and reliable operation of the system, as well as reducing the energy consumption of the system significantly.

关 键 词：船舶中央冷却水系统 多段比值函数 比值控制 smith滞环比较器 

分 类 号：U664.87[交通运输工程—船舶及航道工程]