【摘要】：閥門(mén)作為工業(yè)發(fā)展中一個(gè)不可缺少的部分,已經(jīng)成為衡量一個(gè)國(guó)家生產(chǎn)水平的標(biāo)志,閥門(mén)產(chǎn)業(yè)的發(fā)展逐漸向著大容量、高參數(shù)、高要求、多效用以及自動(dòng)化方向發(fā)展。傳統(tǒng)的閥門(mén)設(shè)計(jì)方法已經(jīng)不能促進(jìn)閥門(mén)產(chǎn)業(yè)的快速發(fā)展,計(jì)算機(jī)輔助設(shè)計(jì)將成為閥門(mén)設(shè)計(jì)發(fā)展的必然。本文主要通過(guò)CFD相關(guān)理論,由介質(zhì)對(duì)閥門(mén)的影響出發(fā),使用流體分析軟件Fluent、有限元分析軟件ANSYS進(jìn)行閥門(mén)的結(jié)構(gòu)、強(qiáng)度等一系列分析,實(shí)現(xiàn)閥門(mén)設(shè)計(jì)的智能化。 (1)首先通過(guò)已有閥門(mén)實(shí)驗(yàn)數(shù)據(jù)與仿真數(shù)據(jù)的對(duì)比,確定了一套適合連桿蝶閥分析的仿真模型,為本文后續(xù)分析提供了依據(jù)。 (2)利用驗(yàn)證模型對(duì)該連桿蝶閥進(jìn)行結(jié)構(gòu)、強(qiáng)度和流態(tài)分析,獲得大部分閥門(mén)的實(shí)驗(yàn)數(shù)據(jù)以及所需要的參數(shù),根據(jù)所得的數(shù)據(jù)結(jié)果,提出了結(jié)構(gòu)優(yōu)化的方案,并提出閥門(mén)操作存在的弊端。 (3)對(duì)閥門(mén)進(jìn)行結(jié)構(gòu)優(yōu)化,建立優(yōu)化后的連桿蝶閥模型,通過(guò)改進(jìn)前后對(duì)比,發(fā)現(xiàn)改進(jìn)后的蝶閥無(wú)論在功能上,還是在結(jié)構(gòu)上都比原蝶閥要好,證明了通過(guò)流體分析對(duì)蝶閥進(jìn)行的優(yōu)化是合理的。 (4)對(duì)連桿蝶閥進(jìn)行多場(chǎng)耦合分析,提出了蝶閥研究的新方法,驗(yàn)證了改進(jìn)后蝶閥在受到介質(zhì)壓力時(shí)變形量遠(yuǎn)遠(yuǎn)小于改進(jìn)前模型。 (5)對(duì)閥門(mén)的失效形式——汽蝕進(jìn)行了深入研究,從產(chǎn)生根源,到發(fā)展過(guò)程,最終到其所造成的破壞等,都進(jìn)行了詳盡的分析,其中使用了數(shù)學(xué)模型、流體仿真等多種方法,給出了避免汽蝕的方法。 本文從CFD入手,通過(guò)多種方法對(duì)閥門(mén)進(jìn)行剛度、強(qiáng)度、流阻、流態(tài)等多方面的分析,解決了閥門(mén)實(shí)驗(yàn)的巨大耗資問(wèn)題,并且深入研究了閥門(mén)的失效形式,使閥門(mén)設(shè)計(jì)從傳統(tǒng)的經(jīng)驗(yàn)設(shè)計(jì)過(guò)渡到現(xiàn)代的智能設(shè)計(jì)。
[Abstract]:As an indispensable part of industrial development, valve has become a symbol to measure the production level of a country. The development of valve industry is gradually towards the direction of large capacity, high parameters, high requirements, multi-utility and automation. Traditional valve design method can not promote the rapid development of valve industry, computer aided design will become the inevitable development of valve design. Based on the theory of CFD and the influence of the medium on the valve, this paper uses the fluid analysis software Fluent, finite element analysis software ANSYS to analyze the structure and strength of the valve, so as to realize the intelligent design of the valve. The main contents are as follows: (1) by comparing the existing valve experimental data with the simulation data, a set of simulation model suitable for the analysis of the connecting rod butterfly valve is established, which provides the basis for the subsequent analysis of this paper. (2) the structure, strength and flow state of the connecting rod butterfly valve are analyzed by using the verification model. The experimental data of most valves and the required parameters are obtained. According to the obtained data, the scheme of structure optimization is proposed. The disadvantages of valve operation are also put forward. (3) optimize the structure of valve, establish the model of optimized connecting rod butterfly valve, and find that the improved butterfly valve is better than the original butterfly valve in function and structure by comparing before and after improvement. It is proved that the optimization of butterfly valve by fluid analysis is reasonable. (4) Multi-field coupling analysis of connecting rod butterfly valve is carried out, and a new method of butterfly valve research is put forward, which verifies that the modified butterfly valve is much smaller than the modified model when it is subjected to medium pressure. (5) the failure form of valve, cavitation, has been deeply studied, from the origin, to the development process, and finally to the damage caused by the valve, the mathematical model, fluid simulation and many other methods have been used. The method of avoiding cavitation is given. Starting with CFD, this paper analyzes the stiffness, strength, flow resistance and flow state of the valve by a variety of methods, solves the huge cost problem of the valve experiment, and deeply studies the failure form of the valve. Make valve design transition from traditional experience design to modern intelligent design.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類(lèi)號(hào)】：TH134

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉健;李福堂;;基于Fluent的蝶閥三維流動(dòng)的數(shù)值模擬及分析[J];遼寧科技大學(xué)學(xué)報(bào);2008年Z1期

2 高平;;基于UG的閥門(mén)CAD/CAE系統(tǒng)[J];北京機(jī)械工業(yè)學(xué)院學(xué)報(bào);2006年01期

3 郝承明;蝶閥技術(shù)的新進(jìn)展[J];閥門(mén);2001年05期

4 石娟,梁鵬飛,姚征,馬玉山,馬明軒,郭學(xué)寧;偏心蝶閥水力特性的數(shù)值模擬與分析[J];閥門(mén);2004年05期

5 吳石,張文平;閥門(mén)流場(chǎng)的數(shù)值模擬及流噪聲的實(shí)驗(yàn)研究[J];閥門(mén);2005年01期

6 肖寧;蝶閥設(shè)計(jì)與選用[J];閥門(mén);2005年05期

7 劉飛;張強(qiáng);沈曦;舒紅梅;;蝶閥密封結(jié)構(gòu)的技術(shù)進(jìn)化理論分析[J];閥門(mén);2007年06期

8 余龍;俞樹(shù)榮;李淑欣;;虛擬現(xiàn)實(shí)技術(shù)在閥門(mén)設(shè)計(jì)中的應(yīng)用[J];閥門(mén);2008年01期

9 彭鳳祥;閥門(mén)氣蝕研究[J];閥門(mén);1994年03期

10 李振東;核電液控止回蝶閥設(shè)計(jì)[J];閥門(mén);1994年04期

，

本文編號(hào)：2395361