﻿ 舰船水幕系统设计方法研究
 舰船科学技术  2019, Vol. 41 Issue (8): 64-68 PDF

Research on design method of the ship water curtain system
WAN Xin-bin, YU Shu-wen
Marine Design and Research Institute of China, Shanghai 200011, China
Abstract: The design method of the ship water curtain system is studied in this paper including the fire water consumption calculation, water discharge design, divisional design, pipeline design, modeling of the resistance calculation, the optimization and so on. The water curtain system is integrated optimized to make all the functions of water curtain protection, decontamination, infrared cooling and foam fire-fighting share the same piping for reducing the number of pipe and accessories, reducing the difficulty of piping layout and reducing the whole weight of the ship. After that, taking a ship as example, the water curtain system is designed and calculated. The optimization measures are suggested to meet the design requirement. Finally, the proposed design method of the ship water curtain system in this paper is verified.
Key words: water curtain system     foam fire-fighting     integrated design     resistance calculation
0 引　言

1 水幕系统设计 1.1 水幕系统耗水量计算

1.2 水幕系统喷水量的设计

1.3 水幕系统分区设计

1.4 水幕分区管路设计

 图 1 管路连接形式 Fig. 1 The pipe connection pattern
2 水幕系统阻力计算

 图 2 消防泵扬程流量曲线 Fig. 2 The head curve of the fire pump

 图 3 360°喷头流量曲线 Fig. 3 The flow curve of the 360-degree sprayer

 图 4 水幕系统末端模型 Fig. 4 The partial pipe model of the terminal of the water curtain system

3 水幕系统优化设计

4 水幕系统设计实船案例

4.1 水幕系统耗水量计算

4.2 水幕系统设计喷水量

4.3 水幕系统分区设计

4.4 阻力计算结果分析

1）消防泵流量计算结果

 图 5 消防泵工作流量 Fig. 5 The actual working flow of the fire pumps

2）水幕分区流量计算结果

 图 6 #1～#9水幕分区工作流量 Fig. 6 The actual working flow from the 1st to the 9th partition

 图 7 #10～#16水幕分区工作流量 Fig. 7 The actual working flow from the 10st to the 16th partition

3）水幕喷头压力计算结果

#1～#3、#5～#9、#11分区大多喷头工作压力均高于正常工作压力（0.25 MPa），基本在0.65 MPa以上，部分接近雾化压力（0.8 MPa）；#4、#10、#12～#16分区部分喷头压力不足，低于设计压力。

 图 8 #1水幕分区各喷头工作压力 Fig. 8 The actual working pressure of the sprayers located in the 1st partition

 图 9 #12水幕分区各喷头工作压力 Fig. 9 The actual working pressure of the sprayers located in the 12th partition
4.5 水幕系统优化设计

4.6 优化前后结果对比分析

1）消防泵流量计算结果

 图 10 消防泵工作流量 Fig. 10 The comparison of the actual working flow of the fire pumps before and after optimization

2）水幕分区流量计算结果

 图 11 #1～#9水幕分区工作流量 Fig. 11 The comparison of the actual working flow from the 1st to the 9th partition before and after optimization

3）水幕喷头压力计算结果

 图 12 #1水幕分区喷头优化前后工作压力 Fig. 12 The comparison of the actual working pressure of the sprayers located in the 1st partition before and after optimization

 图 13 #12水幕分区喷头优化前后工作压力 Fig. 13 The comparison of the actual working pressure of the sprayers located in the 12th partition before and after optimization
5 结　语

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