基于喷嘴出口砂质量分数精准测量的304不锈钢冲蚀行为  

Precise Measurement of Nozzle Outlet Sand Mass Fraction Based on 304 Stainless Steel Erosion Behavior

作　　者：张明鲲 王新辉 梁治国 张正龙 曹楷 王治国[2] ZHANG Mingkun;WANG Xinhui;LIANG Zhiguo;ZHANG Zhenglong;CAO Kai;WANG Zhiguo(Xianyang Special Equipment Inspection Institute,Xianyang 712099,China;Xi’an Key Laboratory of Wellbore Integrity Evaluation,Xi’an Shiyou University,Xi’an 710065,China)

机构地区：[1]咸阳市特种设备检验所,陕西咸阳712099 [2]西安石油大学,西安市井完整性重点实验室,陕西西安710065

出　　处：《化工技术与开发》2023年第6期60-64,共5页Technology & Development of Chemical Industry

基　　金：国家自然科学基金项目(52074220)。

摘　　要：为了研究冲击角度、流体流速、砂粒直径以及砂质量分数等因素对304不锈钢材料冲蚀率的影响,本文以喷嘴处实际的砂质量分数为计算依据,采用自制的喷射式冲蚀实验台,精准测量了冲蚀实验过程中喷嘴出口处的砂质量分数,开展了液固两相流的冲蚀实验研究。研究结果表明,当冲击角度为45°时,水平切削力和垂直冲击力的交互作用最强,SS304不锈钢材料的冲蚀速率最大。流速为6~8m·s^(-1)时,冲蚀速率的变化较快,流速超过10m·s^(-1)后,增长趋势变缓。砂粒直径对SS304不锈钢材料冲蚀速率的影响,呈先增大后减小的趋势。与粗砂相比,砂粒直径较小时,冲蚀速率更大。砂的质量分数增加时,颗粒间碰撞频率的增加导致颗粒损失了部分动能,使得冲蚀速率降低。实验研究结果可为油气田复杂环境下材料的冲蚀预测及安全评价提供参考。In order to study the influence of impact angle,fluid velocity,sand particle diameter,and sand mass fraction on the erosion rate of 304 stainless steel material,this article used the actual sand mass fraction at the nozzle as the calculation basis,and applied a self-made jet erosion test bench to accurately measure the sand mass fraction at the nozzle outlet,the erosion experiment of liquid-solid two-phase flow was conducted.The results showed that when the impact angle was 45°,the interaction between horizontal cutting force and vertical impact force was the strongest,and the erosion rate of SS304 stainless steel was the largest.When the flow rate was between 6~8m/s,the change of erosion rate was faster,when the flow rate exceeded 10m/s,the growth trend slowed down.The influence of sand particle diameter on the erosion rate of SS304 stainless steel material showed a trend of first increased and then decreased.Compared to coarse sand,smaller sand particles have a higher erosion rate.The increase in collision frequency between particles led to the loss of some kinetic energy,decreased the erosion rate.The experimental research results could provide reference for predicting material erosion and safety evaluation in complex environments of oil and gas fields.

关 键 词：冲蚀 304不锈钢 流速 砂粒直径 砂质量分数 

分 类 号：TG172.2[金属学及工艺—金属表面处理]