0348-倒傘形曝氣機(jī)有限元分析及優(yōu)化設(shè)計(jì),傘形,曝氣機(jī),有限元分析,優(yōu)化,設(shè)計(jì) 倒傘型曝氣機(jī)有限元分析及優(yōu)化設(shè)計(jì) 摘要：研究污水處理設(shè)備強(qiáng)度優(yōu)化問(wèn)題,倒傘型曝氣機(jī)是污水生物處理技術(shù)中的關(guān)鍵設(shè)備,具有充氧、攪拌和推流等作用。攪拌葉輪的設(shè)計(jì)和優(yōu)化對(duì)其最主要的性能指標(biāo)充氧動(dòng)力效率至為關(guān)鍵。在研究曝氣機(jī)充氧機(jī)理的基礎(chǔ)上,對(duì)曝氣機(jī)的葉片進(jìn)行了實(shí)體建模、有限元分析和優(yōu)化設(shè)計(jì)。首先利用ANSYS平臺(tái)對(duì)葉片工作過(guò)程進(jìn)行了研究,通過(guò)實(shí)體建模、網(wǎng)格劃分和有限元分析等過(guò)程,對(duì)曝氣機(jī)攪拌葉片在工作狀態(tài)的應(yīng)力應(yīng)變情況進(jìn)行了有限元仿真分析。仿真結(jié)果明確了葉片的薄弱環(huán)節(jié),并為進(jìn)行優(yōu)化和改良結(jié)構(gòu),為產(chǎn)品的生產(chǎn)設(shè)計(jì)提供了研究依據(jù)。 關(guān)鍵詞:倒傘曝氣機(jī);有限元分析;優(yōu)化設(shè)計(jì)  Fin ite Element Ana lysis and Optima l Designfor Inverted Umbrella Aera tor Abstract：The inverted umbrella aerator is the key equipment of biological wastewater treatment technology,which has the effects of oxygenation, mixing and p lug - flow. The design and op timization of the mixing impeller ismost important to the efficiency of oxygenation. In this paper, the solidmodeling and finite element analysis and op ti2mal design of aerator blades were made based on the study of the oxygenation mechanism. Firstly, the working process of the bladeswas studied through solid modeling, mesh generation and finite element analysis process, and the stress - strain finite element analysiswas offered based on ANSYS, which identified the weak links in the leaves.And more, the op timized and imp roved designs for the p roduction were made, which set the foundation for the manu2facture of the blades. Keywords: Inverted umbrella aerator; Finite element analysis; Op timal design Signature of Supervisor: