Fluid-structure Interaction Analysis and Crack Generation Mechanism Exploration of Cyclone Separator
High-pressure cyclone separator is an important purification and separation equipment for natural gas in compressor station before leaving the station.Its inlet pressure is high,fluctuates greatly,and its internal dynamic response is complex.At present,microcracks often appear in the inlet area of some separator shells in domestic operation.In order to explore the distribution of the flow field inside the cyclone,study the dynamic response of the separator shell,and accurately understand the mecha-nism of cracks in the inlet area of the cyclone separator,based on the finite element method,the inter-nal flow field distribution law of the cyclone separator under stable and unstable pressure inlet boundary conditions is calculated respectively.The pressure results of the flow field are transmitted to the separator shell through the fluid-solid coupling surface as the load boundary condition of the solid domain,and the stress and deformation of the separator shell are calculated.Then,the standard specimen is made,tensile and fatigue tests are carried out with the stress value in the inlet area of the separator as the load condition to explore the mechanism of microcracks in the inlet area.This study can provide some theo-retical guidance for crack prevention and engineering maintenance of cyclone separators.
cyclone separatorfluid-structure interactionfluctuating pressurefatigue test
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