本文關(guān)鍵詞： 滑閥 CFD 穩(wěn)態(tài)液動力 流場 溫度場 熱變形　出處：《燕山大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

【摘要】：電液伺服閥是電液伺服控制系統(tǒng)中最關(guān)鍵的元件，其性能直接影響電液伺服系統(tǒng)的性能。電液伺服閥具有體積小、功率放大率高、響應(yīng)速度快等優(yōu)點。滑閥是液壓伺服系統(tǒng)中應(yīng)用最為廣泛的液壓放大元件。本文以Φ8通徑電液伺服閥為基礎(chǔ)，仿真分析電液伺服閥滑閥部分。 目前，隨著計算機技術(shù)的應(yīng)用以及數(shù)值計算技術(shù)的迅速發(fā)展，用數(shù)值計算方法來研究液壓系統(tǒng)及液壓元件內(nèi)部的流場分布已經(jīng)能取得很好的效果。本文針對不同工況下Φ8通徑電液伺服閥滑閥全流道內(nèi)的流場分布、閥芯穩(wěn)態(tài)液動力大小、閥桿徑向力分布、滑閥溫度場分布以及閥芯和閥套熱變形等幾個方面，采用數(shù)值模擬與理論計算相結(jié)合的方法進行較為深入的研究與分析。 首先，采用計算流體動力學(xué)(Computational Fluid Dynamics，簡稱CFD)仿真軟件，，數(shù)值模擬不同工況下Φ8通徑電液伺服閥滑閥全流道內(nèi)的流場特性，通過對比分析，得到工作壓力和工作溫度對滑閥流場特性的影響情況。其次，數(shù)值模擬不同工況下閥芯穩(wěn)態(tài)液動力的情況，并與通過理論計算方法得到的閥芯穩(wěn)態(tài)液動力進行對比。第三，仿真分析滑閥閥桿上徑向力的分布情況，并對滑閥閥芯液壓卡緊進行定量分析。最后，采用有限元分析(Finite ElementAnalysis，簡稱FEA)仿真軟件，數(shù)值模擬滑閥溫度場分布以及閥芯和閥套的熱變形情況，分析熱變形后閥芯和閥套之間的配合間隙情況。
[Abstract]:The electro-hydraulic servo valve is the most important component in the electro-hydraulic servo control system, and its performance directly affects the performance of the electro-hydraulic servo system. The electro-hydraulic servo valve has the advantages of small size and high power magnification. The slide valve is the most widely used hydraulic amplifying element in the hydraulic servo system. Based on the 桅 8 diameter electro-hydraulic servo valve, this paper simulates and analyzes the slide valve part of the electro-hydraulic servo valve. At present, with the application of computer technology and the rapid development of numerical computing technology, The numerical calculation method has been used to study the flow field distribution in hydraulic system and hydraulic components. In this paper, the flow field distribution in the whole channel of 桅 8 diameter electro-hydraulic servo valve slide valve and the steady hydraulic power of the valve core have been studied under different working conditions. The radial force distribution of the stem, the temperature field distribution of the slide valve and the thermal deformation of the valve core and the valve sleeve are studied and analyzed deeply by the method of combining the numerical simulation with the theoretical calculation. Firstly, the numerical simulation software of Computational Fluid Dynamics (CFDs) is used to numerically simulate the flow field characteristics of 桅 8 diameter electro-hydraulic servo valve slide valve in the whole channel under different working conditions. The effects of working pressure and working temperature on the flow field characteristics of the slide valve are obtained. Secondly, the steady fluid dynamics of the valve core under different working conditions are numerically simulated and compared with the steady fluid dynamics of the valve core obtained by the theoretical calculation method. Third, The distribution of radial force on the valve stem is simulated, and the hydraulic clamping of the valve core is quantitatively analyzed. Finally, the finite element Analysis (FEA) simulation software is used. The temperature field distribution of the slide valve and the thermal deformation of the valve core and the valve sleeve are simulated numerically. The fit gap between the valve core and the valve sleeve after the hot deformation is analyzed.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH137.52

【參考文獻】

相關(guān)期刊論文 前10條

1 潘旭東;張麗;王廣林;;基于Fluent軟件的滑閥流量特性的數(shù)值仿真研究[J];裝備制造技術(shù);2007年09期

2 沈傳亮;程光明;曾平;楊志剛;鄂世舉;周淼磊;李欣欣;;壓電驅(qū)動式高頻電液伺服閥實驗研究[J];哈爾濱工業(yè)大學(xué)學(xué)報;2008年09期

3 趙雙龍;許長華;魏超;;滑閥穩(wěn)態(tài)液動力的計算和分析[J];火箭推進;2006年03期

4 李躍松;朱玉川;吳洪濤;田一松;牛世勇;;電液伺服閥的研究現(xiàn)狀[J];航空兵器;2010年06期

5 高殿榮,王益群;液壓錐閥流場的有限元法解析[J];機床與液壓;2000年02期

6 王國志,王艷珍,鄧斌,于蘭英,柯堅;水壓滑閥流動特性可視化分析[J];機床與液壓;2003年01期

7 袁冰;于蘭英;柯堅;劉曉紅;;液壓滑閥閥芯旋轉(zhuǎn)現(xiàn)象的CFD解析[J];機床與液壓;2006年03期

8 方群;黃增;;電液伺服閥的發(fā)展歷史、研究現(xiàn)狀及發(fā)展趨勢[J];機床與液壓;2007年11期

9 王新華;孫樹文;李劍鋒;張建宇;王思民;;水壓伺服控制技術(shù)發(fā)展的現(xiàn)狀及應(yīng)用前景[J];機床與液壓;2008年05期

10 高殿榮,王益群,申功p

本文編號：1540309