高压水射流消除残余应力的喷嘴流场分析  被引量:3

Nozzle Flow Field Analysis for Weld Residual Stress Reduced by High Pressure Water Jetting

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作  者:郑红祥 蒋文春[1] 张玉福[2] 苏厚德[2] 陈韶范[2] 任林昌 李圣军 边增鑫 ZHENG Hong-xiang;JIANG Wen-chun;ZHANG Yu-fu;SU Hou-de;CHEN Shao-fan;REN Lin-chang;LI Sheng-jun;BIAN Zeng-xin(College of New Energy,China University of Petroleum;Lanpec Technologies Limited;China National Oil and Gas Seventh Construction Co.,Ltd.;Tongkun Group Co.,Ltd.)

机构地区:[1]中国石油大学(华东)新能源学院 [2]甘肃蓝科石化高新装备股份有限公司 [3]中国石油天然气第七建设公司 [4]桐昆集团股份有限公司

出  处:《化工机械》2019年第5期541-545,共5页Chemical Engineering & Machinery

基  金:国家自然科学基金项目(51575531);国家重点研发计划项目(2018YFC0808801)

摘  要:介绍了射流机理,给出了控制方程。建立了喷嘴流场计算模型,研究了5种喷嘴结构对速度分布和靶件冲击压力的影响规律。结果表明:圆锥直线型喷嘴的水射流冲击压力和轴心速度虽然略小于圆锥型(13°)喷嘴,但其水射流的集束性和稳定性均优于其他4种类型的喷嘴,因此圆锥直线型喷嘴最适宜作为高压水射流消除焊接残余应力的配套喷嘴。The mechanism of jet was described and its governing equation was presented. Through establishing the mathematical model of the nozzle’s flow field,the effect law of the nozzle’s five different structures which impacting both pressure and velocity distributions in the flow field was investigated to show that,the impact pressure and axial speed of the conical straight nozzle are slightly smaller than that of the conical nozzle( about 13°),and its jet collection property and stability are superior to that of other types of nozzles. Therefore,the conical straight nozzle should be preferred when the high-pressure water jet technology is utilized for elimination of welding residual stress.

关 键 词:喷嘴 高压水射流 水射流速度 冲击压力 消除残余应力 

分 类 号:TQ055.8[化学工程]

 

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