高水基高压大流量安全阀研究

发布时间：2018-05-21 05:34

本文选题：高压大流量安全阀 + FLUENT　；参考：《河南科技大学》2012年硕士论文

【摘要】：高端液压支架是煤矿综采自动化及我国煤矿综采重大装备的发展需求，，所谓高端主要表现为支护高度高、工作阻力大、可靠性好等特点。而安全阀是液压支架的关键阀件，起控制和过载保护作用，其性能的好坏直接影响支架强度与安全系数，进而影响采煤工作面的生产率和经济技术指标。因此，开展对高水基高压大流量安全阀的研究不仅具有重要的科学意义，而且具有广阔的应用价值和巨大经济效益。在查阅国内外大量相关文献基础上，综述了高压大流量安全阀的研究现状和应用情况，结合国内相关研究的进展，确定了本文的主要研究方向。本文以某一参数高端液压支架用安全阀为对象，经过理论分析计算，完成了特定参数下高压大流量安全阀的结构设计；采用PRO/E软件绘制安全阀的流场的几何模型，基于FLUENT仿真分析平台建立高压大流量安全阀流道流场的数学模型，对其进行详细的流场分析，明确了安全阀气穴气蚀的产生机理和影响因素，并提出高水基高压大流量流道优化方法；采用ANSYS软件对高压大流量安全阀进行有限元分析，验证阀芯结构强度；利用AMESim软件分析了高压大流量安全阀动态特性。最后，利用高压大流量安全阀测试系统进行了安全阀的启溢闭特性试验，试验结果满足设计要求，达到安标标准，验证了理论分析和设计方法的正确性。
[Abstract]:High-end hydraulic support is the development demand of fully mechanized coal mining automation and major equipment in our country. The so-called high-end main features are high supporting height, high working resistance, good reliability and so on. The safety valve is the key valve of the hydraulic support, which plays the role of control and overload protection. Its performance directly affects the strength and safety factor of the support, and then affects the productivity and economic and technical index of the coal mining face. Therefore, the research of high water base high pressure and large flow safety valve is not only of great scientific significance, but also of wide application value and great economic benefit. On the basis of consulting a large number of related literatures at home and abroad, the research status and application of high pressure and large flow safety valve are summarized. The main research direction of this paper is determined in combination with the domestic related research progress. In this paper, the structure design of high pressure and large flow safety valve with certain parameters is completed by theoretical analysis and calculation, and the geometric model of the flow field of safety valve is drawn by PRO/E software. Based on the FLUENT simulation analysis platform, the mathematical model of the flow field of the high pressure and large flow relief valve channel is established, and the detailed flow field analysis is carried out, and the mechanism of cavitation and the influencing factors of the cavitation in the safety valve are clarified. The optimization method of high water base high pressure and large flow channel is put forward, the finite element analysis of high pressure and large flow safety valve is carried out by ANSYS software, and the strength of valve core structure is verified. The dynamic characteristics of high pressure and large flow safety valve are analyzed by AMESim software. Finally, the high pressure and large flow safety valve test system is used to test the opening and closing characteristics of the safety valve. The test results meet the design requirements and meet the safety standard. The correctness of the theoretical analysis and design method is verified.
【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH134

【参考文献】