基于AMESim的液壓支架用大流量安全閥動態(tài)特性研究
[Abstract]:In the development and utilization of all energy sources in China, coal is always the first energy source. How to produce "high efficiency and safety" puts forward more and more high performance requirements for hydraulic support which is the main support and safety protection in underground coal mining. As the most important basic component in the hydraulic support system, the large flow relief valve mainly plays the role of control and overload protection, and its working performance directly affects the dynamic stability and reliability of the whole hydraulic support. Therefore, we should pay enough attention to the dynamic characteristics of large flow relief valve. The main work of this paper is as follows: 1. Firstly, the background and significance of this topic are introduced, and the shortcomings of the research on the dynamic characteristics of large flow safety valve in China are expounded. And the development status of large flow safety valve used in hydraulic support at home and abroad; Secondly, according to the basic theory of large flow safety valve, the basic structure, working principle and basic theory of large flow safety valve are analyzed. The structure safety valve of straight slide valve is chosen as the research object. The structural performance of the safety valve, such as rated flow rate and nominal flow rate, is analyzed in detail, and the main performances of the safety valve, such as seat aperture, spring stiffness and steady state hydraulic power, are calculated. It provides a powerful numerical theoretical basis for the analysis of the dynamic characteristics of the following large flow safety valve. 3. By using the AMESim dynamic analysis software, the simulation model of the large flow safety valve in the whole working loop of AMESim is established and the parameters are set up. The dynamic characteristics of large flow safety valve under five different structural parameters are analyzed in detail, and the optimum dynamic characteristic parameters of large flow safety valve are obtained. At the same time, three kinds of valve core structures with different relief hole shapes are designed to verify the anti-impact test characteristics of large flow safety valve. 4. Thirdly, using Fluent fluid simulation software, the three-dimensional flow channel simulation model and mesh division of large flow safety valve are established. The local static pressure and velocity vector of the internal flow field of the large flow relief valve are simulated and analyzed in four different valve core structures. The variation law of hydrostatic pressure cloud diagram and velocity vector chart of flow field near the valve core are obtained. 5. Finally, the simulation model of combined seal of large flow safety valve is established by using ADINA finite element analysis software. The combined sealing form of polytetrafluoroethylene sealing ring and polyurethane O-ring was determined. The sealing ring between the valve body and the valve core and the O-ring between the valve core and the valve sleeve are simulated and analyzed respectively to determine the best combined seal precompression volume.
【學位授予單位】:蘭州理工大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TD355.4
【參考文獻】
相關期刊論文 前10條
1 郭冰菁;申歡歡;李閣強;聶辰鵬;吳曉路;;高水基高壓大流量安全閥密封失效分析[J];機床與液壓;2015年22期
2 暢軍亮;石高亮;趙繼云;;不同閥芯結構對大流量安全閥的沖擊性能影響研究[J];煤礦機械;2015年03期
3 李閣強;朱玉泉;高有進;郭冰菁;;液壓支架用高壓大流量安全閥閥芯瞬態(tài)液動力分析[J];液壓與氣動;2014年07期
4 楊國來;劉毅;趙雪陽;徐美林;方春暉;;大流量安全閥靜、動態(tài)特性的仿真研究[J];新技術新工藝;2014年02期
5 李閣強;曹中玉;鄧偉森;高有進;;液壓支架用差動式高壓大流量安全閥的研究[J];機床與液壓;2013年21期
6 孫東慶;朱敬成;鄧偉森;;超高壓大流量先導式安全閥的設計與仿真[J];煤礦機械;2013年11期
7 楊國來;許敏影;周勝寬;陳其淼;;液壓支架安全閥內部流場仿真與性能分析[J];煤礦機械;2013年02期
8 李寶金;廉自生;;AMEsim環(huán)境下安全閥動態(tài)特性仿真分析[J];煤礦機械;2012年06期
9 高盼濤;程志紅;崔永亮;;基于AMESim的安全閥動態(tài)仿真研究[J];煤礦機械;2012年03期
10 孫紅波;王勇;姜金球;沙寶銀;;一種液壓支架用大流量安全閥試驗裝置的研制[J];礦山機械;2010年07期
相關博士學位論文 前4條
1 暢軍亮;高壓大流量安全閥設計及實驗系統(tǒng)研究[D];中國礦業(yè)大學;2015年
2 王保明;液壓支架關鍵元件內部流動及系統(tǒng)工作特性研究[D];中國礦業(yè)大學;2011年
3 舒鳳翔;高端液壓支架液壓系統(tǒng)及關鍵元件研究[D];中國礦業(yè)大學;2009年
4 韓偉;液壓支架控制系統(tǒng)大流量閥與移架速度定量化研究[D];煤炭科學研究總院;2006年
相關碩士學位論文 前10條
1 涂永平;基于AMESim的液壓支架液壓系統(tǒng)性能仿真分析[D];重慶交通大學;2014年
2 聶辰鵬;高水基高壓大流量液壓閥失效機理及抑制方法研究[D];河南科技大學;2014年
3 陳春;某型安全閥動態(tài)特性仿真研究[D];華北電力大學;2014年
4 曹中玉;液壓支架用差動式高壓大流量安全閥研究[D];河南科技大學;2013年
5 李寶金;安全閥流場仿真與動態(tài)特性分析[D];太原理工大學;2012年
6 黃飛;高水基高壓大流量安全閥研究[D];河南科技大學;2012年
7 陳蘭;液壓支架液壓系統(tǒng)的建模與仿真[D];西安科技大學;2011年
8 王靜;液壓支架試驗臺液壓系統(tǒng)動態(tài)特性分析[D];太原科技大學;2010年
9 付盼娣;液壓支架用高水基高壓大流量安全閥的研究與開發(fā)[D];鄭州大學;2010年
10 焦黎棟;大流量安全閥動態(tài)特性仿真與流場數(shù)值模擬[D];太原理工大學;2010年
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