本文選題：振蕩翼潮流發(fā)電水輪機(jī) + 水動(dòng)力學(xué)�。� 參考：《哈爾濱工程大學(xué)》2014年碩士論文

【摘要】：作為一種儲(chǔ)量巨大、無污染的綠色可再生能源——海洋能的開發(fā)利用對(duì)于緩解化石能源枯竭所帶來的能源問題有著重要的作用。潮流能是海洋能中最重要的組成之一,其開發(fā)有著很大的價(jià)值。潮流能發(fā)電水輪機(jī)是潮流能有效開發(fā)的工具,它能夠?qū)⒊绷鞯膭?dòng)能,部分的轉(zhuǎn)化為電能。根據(jù)其葉輪獲取能量方式的不同,主要分為水平軸、豎軸、橫軸以及振蕩翼型潮流能發(fā)電水輪機(jī)。本論文所研究的水輪機(jī)即為振蕩翼潮流能發(fā)電水輪機(jī),它利用振蕩翼葉片的俯仰——升降耦合運(yùn)動(dòng),采用雙葉片串聯(lián)葉輪形式,通過葉輪的往復(fù)擺動(dòng),實(shí)現(xiàn)潮流能進(jìn)行獲取的。本論文在對(duì)振蕩翼式潮流能發(fā)電水輪機(jī)葉輪的設(shè)計(jì)基礎(chǔ)上,對(duì)其運(yùn)動(dòng)進(jìn)行研究,設(shè)計(jì)了水輪機(jī)的三級(jí)傳動(dòng)形式,即為“葉輪—二級(jí)整合機(jī)構(gòu)—主傳動(dòng)機(jī)構(gòu)”的結(jié)構(gòu)形式。并且根據(jù)葉片俯仰的特點(diǎn),設(shè)計(jì)了葉輪-葉片的同步運(yùn)動(dòng)結(jié)構(gòu)。本文利用流體分析軟件CFD對(duì)葉輪進(jìn)行水動(dòng)力環(huán)境下的數(shù)值模擬分析,得到葉輪的升阻力系數(shù)以及葉輪的力學(xué)特性,作為水輪機(jī)結(jié)構(gòu)設(shè)計(jì)校核的依據(jù)。完善水輪機(jī)的結(jié)構(gòu)設(shè)計(jì),確定水輪機(jī)的的尺寸以及選配各個(gè)組件,并建立三維模型。通過有限元軟件ANSYS Workbench對(duì)水輪機(jī)的葉輪的葉片、葉輪主軸以及傳動(dòng)軸進(jìn)行靜強(qiáng)度校核分析,對(duì)振蕩翼水輪機(jī)主軸進(jìn)行疲勞分析,以驗(yàn)證水輪機(jī)結(jié)構(gòu)的穩(wěn)定性。通過建立水輪機(jī)關(guān)鍵部件葉輪的有限元仿真模型,對(duì)其進(jìn)行模態(tài)分析,得到葉輪、葉片以及整機(jī)的振蕩特性,通過對(duì)比潮流頻率以及自身運(yùn)動(dòng)頻率,確保水輪機(jī)不會(huì)發(fā)生共振;運(yùn)用模態(tài)疊加法,分析水輪機(jī)葉輪在葉輪質(zhì)量不平衡載荷作用下的動(dòng)態(tài)響應(yīng)分析,驗(yàn)證結(jié)構(gòu)的可靠性。
[Abstract]:As a kind of green renewable energy with huge reserves and no pollution, the exploitation and utilization of oceanic energy plays an important role in alleviating the energy problems caused by the depletion of fossil energy. Tidal current energy is one of the most important components of ocean energy, and its development is of great value. Power flow turbine is an effective tool for the development of power flow energy. It can convert the kinetic energy of power flow into electric energy. According to the different ways in which the impeller acquires energy, it is mainly divided into horizontal axis, vertical axis, horizontal axis and oscillating airfoil power flow generator. The hydraulic turbine studied in this paper is an oscillating wing power turbine, which uses the pitching and lifting coupling motion of the oscillating blade, adopts the form of double vane series impeller, and realizes the power flow energy acquisition by reciprocating and swinging of the impeller. In this paper, based on the design of the turbine impeller with oscillating wing power flow, the motion of the turbine is studied, and the three-stage transmission form of the turbine is designed, which is the structure form of "impeller-two-stage integrated mechanism-main drive mechanism". According to the pitching characteristics of the blade, the synchronous motion structure of the impeller-blade is designed. In this paper, the flow analysis software CFD is used to simulate and analyze the impeller in hydrodynamic environment, and the lift resistance coefficient and the mechanical characteristics of the impeller are obtained, which can be used as the basis for the structural design and checking of the turbine. Perfect the structure design of the turbine, determine the size of the turbine and select each component, and set up the three-dimensional model. The finite element software ANSYS Workbench is used to check and analyze the static strength of the blade, the impeller spindle and the drive shaft of the turbine impeller, and the fatigue analysis of the main shaft of the oscillating wing turbine is carried out to verify the stability of the turbine structure. By establishing the finite element simulation model of the impeller, the oscillation characteristics of the impeller, the blade and the whole turbine are obtained by modal analysis. By comparing the power flow frequency and its own motion frequency, the turbine will not have resonance. The modal superposition method is used to analyze the dynamic response of turbine impeller under the unbalance load of impeller mass to verify the reliability of the structure.
【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】：2014
【分類號(hào)】：TK730.2

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本文編號(hào)：1845053