摘要
利用有限元分析软件建立了封隔器双胶筒模型,分析了在58.15 MPa工作载荷下,不同环境温度对双胶筒与套管之间接触应力的影响规律。考虑压裂封隔器的高温工作环境,分析了在100℃作业温度时,上、下胶筒不同筒高对双胶筒密封性能的影响。研究结果表明,轴向载荷不变时,随温度的升高,双胶筒的密封性能也随之提高,并在100℃时上、下胶筒与套管间密封性能达到最佳,施加载荷端胶筒承担主要的密封作用。当上、下胶筒筒高相等且高度为70 mm时,上胶筒与套管间的接触应力达到最大值66.72 MPa,且上、下胶筒沿轴向的接触应力分布均较平坦,此时双胶筒的密封效果最好。上、下胶筒筒高不等时,相较于上胶筒筒高大于下胶筒筒高的情况,上胶筒筒高小于下胶筒筒高时,上、下胶筒的接触应力沿轴向均呈现较平缓的变化趋势且整体密封性能高。当上、下胶筒筒高分别为40 mm和100 mm时,双胶筒的密封效果最好。
The double rubber model of the packer is set up by means of the finite element software. The influence of differentambient temperature on the contact stress between the double rubber and the casing under the working load of 58.15 MPa isanalyzed. With the high-temperature working environment of the fracturing packer taken into account,the influence of differentheights of the upper and lower rubber tubes on the sealing performance of the double rubber at the operating temperature of 100°C is explored. The results show that when the axial load is constant,the sealing performance of the double rubber increases withthe rising temperature, and the sealing performance between tlie upper and lower rubber tubes and the casing is optimal at 100X!.. The load-end cartridge plays a decisive role on the sealing performance. When the upper and lower rubber rubbers are equalin the height of 70 mm,the contact stress between the upper rubber tubes and the casing reaches the maximum of 66.72 MPa,and the axial and vertical contact-stress distribution of the upper and lower rubber tubes are relatively flat,and therefore thedouble rubber has the best sealing performance. When the upper rubber tubes are higher than the lower rubber tubes,the contactstress of the upper and lower rubber tubes along the axial direction changing gently,and the overall sealing performance ishigh. When the upper and lower rubber rubbers are 40 mm and 100 mm respectively, the double rubber has the best sealingperformance.
作者
张付英
水浩澈
张玉飞
杨俊梅
ZHANG Fu-ying;SHUI Hao-che;ZHANG Yu-fei;YANG Jun-mei(School of Mechanical Engineering,Tianjin University of Science&Technology,Tianjin 300222)
出处
《机械设计》
CSCD
北大核心
2019年第11期14-19,共6页
Journal of Machine Design
基金
天津市自然科学基金重点资助项目（17JCZDJC38800）
关键词
封隔器
双胶筒
接触应力
有限元分析
温度
筒高
packer
double rubber
contact stress
finite element analysis
temperature
height
