Finite elements model of a rotating half-bridge belonging to a circular settling tank

4th ModTech International Conference - Modern Technologies in Industrial Engineering

Dascalescu, A.E.^1 ; Lazaroiu, G.^1 ; Scupi, A.A.^2 ; Oanta, E.^2

Pohtechnica University of Bucharest, Faculty of Power Engineering, 313 Splaiul Independentei, Sector 6, Bucharest

060042, Romania^1

Constanta Maritime University, Faculty of Naval Electro-Mechanics, 104 Mircea cel Batran Street, Constanta

900663, Romania^2

关键词: Circular settling tank;    Complex structure;    Degree of accuracy;    Finite elements models;    Gravitational separation;    Half bridge;    Research methodologies;    Suction pipe;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/145/4/042007/pdf
DOI  :  10.1088/1757-899X/145/4/042007

来源: IOP

【 摘 要 】

A circular settling tank is an open reservoir used for the gravitational separation of the sludge and of the clarified water which is discharged in the launder which is mounted at the periphery of the basin. The extraction of the sludge is done by the use of a rotating half-bridge which sweeps the sludge, vacuums it using a system of scrapping blades and suction pipes, collects it in some local sludge chambers and pour it in a central collecting tank. The rotating half-bridge is a complex structure under a complex system of loads, therefore advanced instruments of investigation are required to assess the state of strains and stresses in this structure. Until now an analytical model was developed based on the hypotheses specific to the strength of materials academic discipline. The numerical models presented in the paper use the finite element method to determine the displacements of the main beam loaded by the weight of the structure and by the Archimedes' forces. The results of the models developed so far are conclusive for the future directions of research which aims a higher degree of accuracy of the models and of the according research methodology.