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  • ISSN 1006-3080
  • CN 31-1691/TQ

旋塞取样阀密封面接触力学性能及疲劳寿命研究

杨步超 吴晨 安琦

杨步超, 吴晨, 安琦. 旋塞取样阀密封面接触力学性能及疲劳寿命研究[J]. 华东理工大学学报(自然科学版). doi: 10.14135/j.cnki.1006-3080.20210126002
引用本文: 杨步超, 吴晨, 安琦. 旋塞取样阀密封面接触力学性能及疲劳寿命研究[J]. 华东理工大学学报(自然科学版). doi: 10.14135/j.cnki.1006-3080.20210126002
YANG Buchao, WU Chen, AN Qi. Study on the Contact Mechanical Performance and Fatigue Life of Sealing Surface of Plug Sampling Valve[J]. Journal of East China University of Science and Technology. doi: 10.14135/j.cnki.1006-3080.20210126002
Citation: YANG Buchao, WU Chen, AN Qi. Study on the Contact Mechanical Performance and Fatigue Life of Sealing Surface of Plug Sampling Valve[J]. Journal of East China University of Science and Technology. doi: 10.14135/j.cnki.1006-3080.20210126002

旋塞取样阀密封面接触力学性能及疲劳寿命研究

doi: 10.14135/j.cnki.1006-3080.20210126002
详细信息
    作者简介:

    杨步超(1995—),男,江苏连云港人,硕士生,主要研究方向为工程摩擦学。E-mail:3476278533@qq.com

    通讯作者:

    安 琦,E-mail:anqi@ecust.edu.cn

Study on the Contact Mechanical Performance and Fatigue Life of Sealing Surface of Plug Sampling Valve

  • 摘要: 以旋塞取样阀为研究对象,研究其密封面接触力学性能和疲劳寿命。应用有关力学理论对旋塞取样阀安装和取样过程进行力学分析,构建了安装过程接触面应力计算的理论模型、旋塞取样阀工作过程中旋塞径向接触应力的计算模型和旋塞表面三个具有代表性的横截面的接触应力分布计算模型。同时结合具体算例,数值计算研究了取样过程旋塞表面上各点接触应力变化分布规律,并采用有限元法对取样时旋塞接触应力分布进行了分析,进一步证明本文所建力学模型的正确性。在此基础上,基于疲劳寿命的基本理论,研究了管道工作压力、旋塞安装过程的压紧量等参数对旋塞疲劳寿命的影响规律。

     

  • 图  1  旋塞取样阀密封结构和工作原理

    Figure  1.  Structure and mechanism of plug sampling valve

    1—Valve seat; 2—PTEF Bushing; 3—Plug; 4—Pressure ring; 5—Adjusting screw; 6—Valve cover; 7—Adaptor; 8—Sample bottle

    图  2  取样阀安装过程受力示意图

    Figure  2.  Stress diagram of sampling valve during installation

    图  3  取样过程中旋塞3个阶段的受力

    Figure  3.  Plug forces of the three stages of sampling

    图  4  第1阶段取样阀旋塞受力示意图

    Figure  4.  Plug force analysis of the first stage of sampling

    图  5  第2阶段取样阀旋塞受力示意图

    Figure  5.  Plug force analysis of the second stage of sampling

    图  6  第3阶段取样阀旋塞受力示意图

    Figure  6.  Plug force analysis of the third stage of sampling

    图  7  旋塞轴向压紧距离对其压紧接触力的影响

    Figure  7.  Influences of axial pressing distance of plug on its pressing contact force

    图  8  取样过程中旋塞截面Ⅰ周向接触应力分布变化

    Figure  8.  Variation of circumferential contact stress distribution on section I of plug during sampling

    图  9  取样过程中旋塞截面Ⅱ周向接触应力分布变化

    Figure  9.  Variation of circumferential contact stress distribution on section Ⅱ of plug during sampling

    图  10  旋塞截面Ⅰ上危险点处接触应力随转动角度变化规律

    Figure  10.  Variation of contact stress at dangerous point on section Ⅰ of plug with rotation angle

    图  11  旋塞截面Ⅱ上危险点处接触应力随转动角度变化规律

    Figure  11.  Variation of contact stress at dangerous point on section Ⅱ of plug with rotation angle

    图  12  旋塞取样阀接触面应力分布有限元分析

    Figure  12.  Stress distribution on the contact surface of plug sampling valve by ANSYS

    图  13  偏心距$e$随旋塞转动角度变化规律

    Figure  13.  Variation of eccentricity with the rotation angle of plug

    图  14  旋塞压入距离$\Delta l$对旋塞疲劳寿命的影响

    Figure  14.  Influences of pressing distance on fatigue life of plug

    图  15  管道液体压力${P_i}$对旋塞疲劳寿命的影响

    Figure  15.  Influences of pipeline liquid pressure on fatigue life of plug

    表  1  旋塞取样阀F-2-ISO-STD-CONTIFLOW-2″-CL150结构及性能参数

    Table  1.   Structure and parameters of sampling valve F-2-ISO-STD-CONTIFLOW-2″- CL150

    $\theta $/°${d_i}$/mm${d_o}$/mm${d_v}$/mm${l_1}$/mm${l_2}$/mm${l_3}$/mm${t_1}$/mm$D$/mm${E_1}$/Pa$\mu $
    $2$$24$$26$$28$$8.5$$36.5$$45$$5$$59$$1.14 \times {10^9}$$0.04$
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-01-26
  • 网络出版日期:  2021-07-02

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