大型舰船环状冷媒水系统运行模式试验研究  

Experimental study on operating modes of refrigerant water loop system of large ships

作　　者：金正涛[1] 

机构地区：[1]中国舰船研究设计中心,湖北武汉430064

出　　处：《中国舰船研究》2017年第5期120-125,共6页Chinese Journal of Ship Research

摘　　要：[目的]为了解决大型舰船环状冷媒水系统多种工况运行时的水力平衡问题,[方法]针对该系统的形式及特点,搭建缩比试验平台,对系统各区独立运行、备用泵向各区供水、单泵及多泵联合供水等多种运行模式进行试验研究。分析在不同运行模式下各区用户支路的流量分配特性。[结果]试验结果表明,当位于舰船舯部的备用泵分别向其他各用户区供水时,各用户支路的实际流量达到设计流量的90%以上,其水力失调度为0.89~1.02;单泵向全舰供水时,用户试验流量仅达到设计流量的20.0%~37.1%,区间流量最大不平衡率均大于40%,存在严重的水力失调现象;对于系统多泵联合供水运行模式,双泵、三泵、四泵联合供水模式下的最优运行工况可满足舰船不同负荷下的水量需求,区间流量最大不平衡率小于15%,结果能满足工程要求。[结论]试验结果可为实舰运行与控制提供参考依据。[Objectives]This paper presents the form and operation characteristics of a refrigerant waterloop system of a large ship.[Methods]To address the flow distribution problem under different operatingmodes, an scaled experimental platform is developed for the system. Experiments on the backup pumpwater supply and single-pump and multi-pump combined water supply are carried out in order to study theflow rate distribution characteristics of the system.[Results]According to the results, when the backuppump in the middle of the ship supplies water to other zones, the flow rates of the users in each zone are allhigher than 90% of the designed values, with the hydraulic imbalance degree ranging from 0.89 to 1.02.When a single pump supplies water to all users of the ship, the flow rates of the users range from 20.0% to37.1% of the designed values, with a peak imbalance ratio higher than 40%. For the multi-pump combinedwater supply mode, the optimal operating conditions of the two-pump, three-pump and four-pumpcombined water supply modes can meet the water demands of different loads respectively, with a maximumimbalance ratio between zones of less than 15%.[Conclusions]This study may provide a reference for theoperation and control of the practical system.

关 键 词：环状冷媒水系统 流量分配 水力失调度 流量不平衡率 

分 类 号：U664.86[交通运输工程—船舶及航道工程]