【摘要】：在電站設(shè)備之中,電站閥門(mén)作為控制和調(diào)節(jié)管道內(nèi)介質(zhì)的流量、流向和壓力,以保證電站設(shè)備正常、安全的工作的關(guān)鍵部件,是整個(gè)電站能夠穩(wěn)定運(yùn)行的重要保障。提高電站閥門(mén)的設(shè)計(jì)質(zhì)量和縮短研發(fā)周期成為了企業(yè)提高市場(chǎng)競(jìng)爭(zhēng)力的關(guān)鍵。因此,針對(duì)電站閥門(mén)開(kāi)發(fā)一套集三維模型快速設(shè)計(jì)、多學(xué)科有限元特性分析和多學(xué)科優(yōu)化設(shè)計(jì)于一體的設(shè)計(jì)平臺(tái),具有重要的理論意義和實(shí)際應(yīng)用價(jià)值。 本文針對(duì)電站閥門(mén)的設(shè)計(jì)特點(diǎn)將CAX及MDO技術(shù)進(jìn)行集成,同時(shí)利用數(shù)據(jù)庫(kù)技術(shù)對(duì)模型數(shù)據(jù)進(jìn)行傳遞及管理以解決數(shù)據(jù)的流通和共享,完成了電站閥門(mén)多學(xué)科優(yōu)化設(shè)計(jì)系統(tǒng)的開(kāi)發(fā),具體內(nèi)容如下： 首先,根據(jù)電站閥門(mén)的設(shè)計(jì)要求,在進(jìn)行功能分析的基礎(chǔ)上,綜合分析國(guó)內(nèi)外優(yōu)秀的CAX集成平臺(tái)的設(shè)計(jì)思路,將面向?qū)ο蟮脑O(shè)計(jì)思想應(yīng)用在系統(tǒng)中,提出了一個(gè)具有模塊化和共享化的多學(xué)科優(yōu)化設(shè)計(jì)系統(tǒng)的框架結(jié)構(gòu)。 基于電站閥門(mén)各零部件的特征,建立模型特征參數(shù)數(shù)據(jù)庫(kù)作為系統(tǒng)底層數(shù)據(jù)存儲(chǔ)器,利用數(shù)據(jù)庫(kù)技術(shù)實(shí)現(xiàn)各個(gè)設(shè)計(jì)平臺(tái)之間的數(shù)據(jù)傳遞,并可以通過(guò)網(wǎng)絡(luò)達(dá)到資源共享的目的。 通過(guò)UG的二次開(kāi)發(fā),對(duì)閥門(mén)的各個(gè)零部件進(jìn)行快速建模、模型快速修改、整機(jī)的自動(dòng)裝配。利用模型簡(jiǎn)化技術(shù),開(kāi)發(fā)模型智能簡(jiǎn)化模塊,自動(dòng)遍歷模型特征,簡(jiǎn)化倒角、小孔等細(xì)小特征。增加FEA模型的轉(zhuǎn)換的成功率、提高CAE的分析效率。 利用ANSYS對(duì)電站閥門(mén)及其零部件進(jìn)行結(jié)構(gòu)、熱應(yīng)力、流場(chǎng)和模態(tài)多學(xué)科特性分析。并編輯APDL設(shè)計(jì)語(yǔ)言,集成VC++的開(kāi)發(fā)環(huán)境,對(duì)ANSYS進(jìn)行二次開(kāi)發(fā),封裝有限元分析的整個(gè)操作過(guò)程使其在后臺(tái)自動(dòng)運(yùn)行,解決有限元分析復(fù)雜的操作流程問(wèn)題。開(kāi)發(fā)ANSYS進(jìn)程監(jiān)控控件,時(shí)刻監(jiān)控設(shè)計(jì)進(jìn)度。 采用iSIGHT集成ANSYS技術(shù),對(duì)電站閥門(mén)進(jìn)行多學(xué)科優(yōu)化設(shè)計(jì),實(shí)現(xiàn)結(jié)構(gòu)同模態(tài)、結(jié)構(gòu)同流場(chǎng)等多學(xué)科耦合優(yōu)化。并以DN32截止閥為設(shè)計(jì)實(shí)例,對(duì)優(yōu)化結(jié)果進(jìn)行檢驗(yàn),制造物理樣機(jī)驗(yàn)證設(shè)計(jì)結(jié)果。
[Abstract]:In power plant equipment, power plant valve is the key component to control and regulate the flow, flow direction and pressure of the medium in the pipeline to ensure the normal and safe operation of the power station equipment. It is an important guarantee for the whole power station to operate stably. Improving the design quality of power plant valves and shortening the R & D cycle have become the key to improve the market competitiveness of enterprises. Therefore, it is of great theoretical significance and practical application value to develop a design platform for power plant valves that integrates the rapid design of 3D model, multi-disciplinary finite element analysis and multidisciplinary optimization design. According to the design characteristics of power plant valve, this paper integrates CAX and MDO technology, and uses database technology to transfer and manage the model data to solve the problem of data circulation and sharing, and completes the development of multi-disciplinary optimization design system for power plant valve. The specific contents are as follows: firstly, according to the design requirements of power plant valves, on the basis of functional analysis, the design ideas of the excellent CAX integrated platform at home and abroad are synthetically analyzed, and the object-oriented design idea is applied in the system. A framework of a multi-disciplinary optimal design system with modularization and sharing is presented. Based on the characteristics of the components and components of the valve of power station, the model characteristic parameter database is established as the underlying data storage of the system. The database technology is used to realize the data transfer between the various design platforms, and the purpose of resource sharing can be achieved through the network. Through the secondary development of UG, the rapid modeling, model modification and automatic assembly of all parts of the valve are carried out. Using the model simplification technology, the model intelligent simplification module is developed, the model features are traversed automatically, the small features such as chamfering and small holes are simplified. Increase the success rate of FEA model transformation and improve the efficiency of CAE analysis. The structure, thermal stress, flow field and modal characteristics of valve and its components are analyzed by ANSYS. The APDL design language is edited, the development environment of VC is integrated, the second development of ANSYS is carried out, the whole operation process of finite element analysis is encapsulated so that it can run automatically in the background, and the complex operation flow problem of finite element analysis is solved. Development of ANSYS process monitoring control, monitoring design progress at all times. The multi-disciplinary optimization design of power plant valve is carried out by using iSIGHT integrated ANSYS technology to realize the multi-disciplinary coupling optimization such as the same mode of structure and the same flow field of structure and so on. Taking DN32 globe valve as a design example, the optimization results are verified and the design results are verified by making a physical prototype.
【學(xué)位授予單位】：哈爾濱理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH134;TP311.52

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