Principle and Performance Analysis of a Kind of Lotus Root Structure Orifice Plate
In view of the noise and vibration caused by turbulence,eddy current and excessive throttling caused by orifice plates under different working conditions,and to reduce cavitation and turbulence noise of multi-stage throttling orifice plates.Uses the lotus root orifice structure as reference to separate each orifice,and takes multiple orifice plates with single orifice structure as the research object,minimum pressure and turbulent kinetic energy are taken as evaluation indexes.The orthogonal experiment method is used to study the flow field performance of the size parameters of the lotus root orifice plate,and the weight of the influence of each parameter on the flow field performance is obtained by range analysis,and a group of optimal size combination schemes are selected.The results show that the minimum pressure distribution of the orifice plate is similar to the cavitation region,and the cavitation phenomenon can be effectively reduced by reducing the minimum pressure distribution range.Secondly,the eddy current generation can be effectively reduced by extending the jet stream area in the downstream of the orifice plate by appropriately increasing the thickness and spacing of the orifice plate.Increasing the size of the inlet and outlet arcs can change the fluid flow state,thus effectively reducing the turbulent kinetic energy,which lays a good theoretical foundation for the application of the lotus-like structure orifice plate in engineering.
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