张小明，郭根喜，陶启友，黄小华，胡 昱
（中国水产科学研究院南海水产研究所，广州 510300）

摘要：依据水力学公式计算出歧管式高压水射流水下洗网机旋转的射流角速度和射流打击力。分析结果表明：旋转的射流打击力随偏转角增大而递减，但随射流压力、旋转半径和喷嘴孔径增大而增大；合理选择喷嘴孔径对旋转的射流打击力的增强作用明显，而增大旋转半径对射流打击力的增强作用较弱；旋转的射流打击力比非旋转的射流打击力更有利于提高清洗网衣的效率。海上清洗试验表明，在合理的压力和流量条件下，旋转的射流打击力清洗网衣的效果良好。

关键词：水射流；洗网机；旋转；射流打击力；网衣

Rotating jet hitting force of the high-pressure water-jet manifold underwater net-washing machine

ZHANG Xiao-ming, GUO Gen-xi, TAO Qi-you, HUANG Xiao-hua, HU Yu
( South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China )

Abstract: The paper obtained the rotating jet angular velocity and hitting force of the high-pressure water-jet manifold underwater net-washing machine, according to hydraulic dynamics and the self-rotating of the model. Analyses showed that the rotating hitting force F diminished with the deflection angle increasing, but increased with the pressure p, gyration radius R and the nozzle diameter d increasing; a reasonable choice of nozzle diameter d would significantly enhanced the role of the rotating hitting force F, while the increase of the gyration radius R had not good effect of the jet hitting force F; the rotating jet hitting force is more conducive to raising the efficiency of washing net than that of the non-rotating jet hitting force. Sea washing experiments demonstrated that the rotating jet hitting force washed net well under the suitable pressure and flux.

Key words: water-jet; net-washing machine; rotating; jet hitting force; net


基金项目：国家“863”高技术研究发展计划项目（2006AA100302、2006AA100301）；国家科技支撑计划项目（2006BAD09A14）；中央级公益性科研院所基本科研业务费专项资金项目（2009TS25）
作者简介：张小明（1982—），男，助研，博士，研究方向：渔业设施工程与装备技术研究。E-mail: xilen_2@yahoo.com.cn

(来源：《渔业现代化》2010.37(1)：15-28)