本文關(guān)鍵詞： 止回閥 強(qiáng)度分析 優(yōu)化設(shè)計(jì) Pro/E ANSYS　出處：《哈爾濱工程大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

【摘要】：止回閥是船用核動(dòng)力回路中的重要設(shè)備,而閥體又是止回閥的最主要部件之一,不管是新產(chǎn)品的開發(fā)設(shè)計(jì),還是老產(chǎn)品的結(jié)構(gòu)改進(jìn),都離不開閥體的開發(fā)設(shè)計(jì)與改進(jìn)。如何開發(fā)設(shè)計(jì)出均勻強(qiáng)度的閥體、如何改進(jìn)閥體的結(jié)構(gòu)以減少閥體的應(yīng)力集中現(xiàn)象,是目前閥門行業(yè)亟待解決的問題,更是船用核動(dòng)力裝置閥門必須解決的問題。對(duì)沖式止回閥的強(qiáng)度性能指標(biāo)關(guān)系著核反應(yīng)堆的安全,所以研究并優(yōu)化主止回閥的強(qiáng)度技術(shù)參數(shù)具有重要意義。 本論文運(yùn)用ANSYS-Workbench有限元軟件,對(duì)對(duì)沖式止回閥閥體進(jìn)行強(qiáng)度分析和優(yōu)化設(shè)計(jì)。首先,參照對(duì)沖式止回閥設(shè)計(jì)圖紙,在保證閥體內(nèi)部流場(chǎng)邊界形狀、尺寸不變的情況下,應(yīng)用大型三維實(shí)體幾何建模軟件Pro/E建造其三維實(shí)體幾何模型,又根據(jù)有限元分析的需要,對(duì)閥體模型進(jìn)行了修改,省略了閥體內(nèi)部較小的倒角面,并將幾何模型保存為IGES格式,以供導(dǎo)入ANSYS中。其次,應(yīng)用ANSYS有限元軟件對(duì)閥體幾何模型進(jìn)行約束、加載、劃分網(wǎng)格等有限元分析的物理模型建立,并進(jìn)行強(qiáng)度分析,得到閥體的應(yīng)力分布和變形情況。第三,以閥體的最大等效應(yīng)力和應(yīng)變?yōu)榧s束條件,閥體的質(zhì)量作為目標(biāo)函數(shù),以閥體結(jié)構(gòu)的基本尺寸作為設(shè)計(jì)變量,經(jīng)多次變參數(shù)優(yōu)化分析計(jì)算,得出閥體最優(yōu)的結(jié)構(gòu)尺寸。 計(jì)算結(jié)果表明：優(yōu)化后閥體的應(yīng)力應(yīng)變分布更加均勻合理,在滿足閥體強(qiáng)度要求情況下,充分利用了材料,減輕了重量,降低了成本。通過對(duì)閥體的研究分析,可為以后新閥門的研發(fā)設(shè)計(jì)及其它零部件的有限元分析與優(yōu)化設(shè)計(jì)奠定一定的基礎(chǔ)。
[Abstract]:Check valve is an important equipment in marine nuclear power loop, and the valve body is one of the most important parts of check valve, whether it is the development and design of new products or the structural improvement of old products. How to develop and design the uniform strength valve body, how to improve the structure of the valve body to reduce the stress concentration phenomenon of the valve body, is the problem to be solved urgently in the valve industry, and how to develop and design the uniform strength valve body and how to improve the structure of the body to reduce the stress concentration phenomenon of the valve body. The strength performance index of the hedge check valve is related to the safety of nuclear reactor, so it is of great significance to study and optimize the strength technical parameters of the main check valve. In this paper, ANSYS-Workbench finite element software is used to analyze and optimize the strength of punching check valve body. Firstly, with reference to the drawing of the hedge check valve, the shape and size of the flow field inside the valve body are kept unchanged. The 3D solid geometric model is constructed by using the large-scale 3D solid geometric modeling software Pro/E. According to the need of finite element analysis, the valve body model is modified, the smaller chamfer surface inside the valve body is omitted, and the geometric model is saved to IGES format. Secondly, the physical model of finite element analysis of valve body is established by ANSYS finite element software, such as constraining, loading, meshing and so on, and the stress distribution and deformation of valve body are obtained by strength analysis. Taking the maximum equivalent stress and strain of the valve body as the constraint condition, the mass of the valve body as the objective function, and the basic size of the body structure as the design variable, the optimum structure size of the valve body is obtained through the optimization analysis and calculation of multiple variable parameters. The calculation results show that the stress and strain distribution of the optimized valve body is more uniform and reasonable. Under the condition of satisfying the requirements of the body strength, the material is fully utilized, the weight is reduced and the cost is reduced. It can lay a foundation for the research and design of new valve and the finite element analysis and optimization design of other parts.
【學(xué)位授予單位】：哈爾濱工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH134

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 姚伍平;超臨界火電迷宮閥流動(dòng)與安全研究[D];上海交通大學(xué);2013年

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本文編號(hào)：1524382