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节流阀 结构设计 CAD

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井控节流阀的结构设计含6张CAD图.zip,节流阀,结构设计,CAD

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井控节流阀的结构设计 摘要 在石油的钻采和开发的过程中，常常需要实施压井作业，给井底适当的回压从而来平衡与地层的压力，压井作业原理是通过调节井控节流阀的开度的调节对井中的流体产生一定的阻力，来产生一定的回压，因此，井控节流阀在钻井控压的过程中起到了关键性的作用，通过流阀的开度的调节节来控制井内的压力，从而防止井喷等事故的发生。本文主要针对井控节流阀在现场工作中泥浆通过节流口后易向壳体冲去，对阀座以及侧壁造成冲击磨损和腐蚀等问题，主要对公称通径 DN52.4、设计压力 70MPa 的井控节流阀进行研究。首先通过对国内外几种井控节流阀阀芯的优缺点分析，最终选择楔形阀芯结构，并在原有基础上对其进行了结构改进；其次还对阀体、阀盖、阀杆、阀芯等主要零件进行了参数校核和结构优化，并重新进行材料选择；再次利用有限元软件对阀体，阀盖、阀杆和阀芯分别进行了有限元分析优化，校核了其强度，保证其安全可靠；最后利用三维制图软件对井控节流阀节的各零部件进行三维绘图。关键词 井控节流阀；参数计算；有限元分析；阀芯结构；三维制图 1Structural optimization and design of well control throttle valveAbstract In the process of oil drilling and development, it is often necessary to implement a well killing operation to properly back pressure the bottom of the well to balance the pressure with the formation. The basic principle of the well operation is to adjust the opening of the well control throttle valve. The size of the degree generates a certain resistance to the fluid in the well, thus generating a certain back pressure. Therefore, the well control throttle valve plays a decisive role in the process of controlling the pressure of the well, and the well is controlled by adjusting the opening of the throttle valve. The pressure to prevent accidents such as blowouts.This paper is mainly for the well control throttle valve in the field work, the mud is easy to flush out to the casing after the throttle through the throttle, causing impact wear and corrosion on the valve seat and the side wall, mainly for the nominal diameter DN52.4, design pressure 70MPa well control throttle valve is studied. Firstly, through the analysis of the advantages and disadvantages of several well control throttle valve cores at home and abroad, the wedge valve core structure is finally selected, and the structural improvement is carried out on the original basis. Secondly, the valve body, valve cover, valve stem, The main parts such as the valve core were parameter checked and structurally optimized, and the material selection was re-selected. The finite element analysis was used to optimize the finite element analysis of the valve body, bonnet, valve stem and valve core, and the strength was checked. To ensure its safety and reliability; finally, three-dimensional drawing of the components of the well control throttle section is carried out by using three-dimensional graphics software.Key words well control throttle valve; parameter calculation; finite element analysis; spool structure; 3D drawing.VII目录1 前言11.1课题研究目的与意义11.2 国内外研究21.3 本文研究内容42 井控节流阀的选型与改进62.1 井控节流阀阀芯的常见形式62.2 楔形节流阀92.3 本章小结133参数确定与强度校核143.1 阀体壁厚确定143.2 阀座密封比压校核163.3 阀杆强度校核183.4中法兰及连接螺栓的强度校核203.5阀杆螺