带压作业闸板防喷器胶芯失效机理研究

发布时间：2018-05-17 04:18

本文选题：带压作业 + 闸板防喷器　；参考：《中国安全生产科学技术》2017年02期

【摘要】：针对带压作业过程中闸板防喷器胶芯易失效的问题,以现场使用的带压作业闸板防喷器胶芯为研究对象,通过实验确定了橡胶基体的本构关系,利用ABAQUS软件对比研究了4种不同井筒压力对胶芯的疲劳失效与密封失效的影响。结果表明:分析结果与现场应用胶芯的失效位置相符,验证了分析的正确性;胶芯的疲劳失效位置集中在橡胶基体与闸板上下部的4个尖角接触区域,上部区域失效严重;井筒压力的大小影响橡胶基体密封面上的接触应力分布,但对耐磨块密封面上接触应力分布影响不显著。建议在橡胶基体与闸板上下部的4个尖角区域补强以增加胶芯寿命。
[Abstract]:In view of the problem that the rubber core of sluice blowout preventer is easy to fail during the operation with pressure, the constitutive relation of rubber matrix is determined by experiments, taking the rubber core used in the field as the research object. The effects of four different wellbore pressures on fatigue failure and sealing failure of rubber core were studied by ABAQUS software. The results show that the analysis results are consistent with the failure position of the applied rubber core, which verifies the correctness of the analysis, and the fatigue failure location of the rubber core is concentrated in the four sharp contact areas between the rubber matrix and the upper part of the gate plate, and the upper part of the rubber core has serious failure. The size of wellbore pressure affects the distribution of contact stress on rubber matrix sealing surface, but it has no significant effect on the distribution of contact stress on the sealing surface of wear-resistant block. It is suggested that the rubber core life should be increased by reinforcing the four angled areas between the rubber matrix and the upper and lower parts of the gate.
【作者单位】：长江大学机械工程学院;中石化石油机械股份有限公司第四机械厂;
【基金】：国家自然科学基金项目(51604039) 湖北省教育厅科学技术研究计划青年人才项目(Q20161310) 长江青年科技创新团队基金项目(2016cqt02)
【分类号】：TE935

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