基于FLUENT的三维多层喷气织机引纬系统设计

Design of Weft Insertion System for the FLUENT-based 3D Multi-layered Air-jet Loom

针对现有三维织机织造效率低、机物料消耗大等问题,参考现有单层喷气引纬织机相关参数,设计出一种高效三维六层喷气引纬系统,六槽异型筘的1,2,3层和4,5,6层采用对称设计;在ANSYS/Fluent平台上,建立以多槽异形筘气流槽间距、辅喷嘴结构和安装参数为设计参数的虚拟样机模型;对虚拟样机进行仿真分析和设计优化,确定最佳设计参数。分析结果表明:辅喷嘴在0.3 MPa的供气压力下,异形筘气流槽间距为35 mm^45mm时最合理;第1层和第6层采用现有单层喷气引纬相关参数;第2层或第5层、第3层或第4层辅喷嘴分别采用仅加长末端、末端和喉部均分这两种结构,安装角分别为20°、25°时,流场分布和速度变化曲线最合理。

Aiming at the problems of low weaving efficiency and large consumption of material in the existing 3 Dloom,a high efficient 3 Dair-jet weft insertion system with 6 layers is designed.The six grooved profiled reed is symmetrically designed,where 1,2,3 and 4,5,6 are symmetric.On the ANSYS/Fluent platform,a virtual prototype model based on the reed tank of multi-slot profiled reed,auxiliary nozzle structure and installation parameters as design parameters is designed and built.The virtual prototype is simulated and optimized,and the optimum design parameters are determined.The analysis results show that when the inlet pressure of relay nozzle is at 0.3 MPa,reed groove spacing of 35 mm～45 mm of the profiled reed is the soundest.The first layer and the sixth layer are based on the parameters of the single layer air-jet weft insertion;the relay nozzles of the second or the fifth layer,the third or the fourth layers are respectively provided with only the extended end,and the same length of the extended end and the throat;when the installation angle of relay nozzle is respectively 20°and 25°,the distribution of flow field and velocity are the soundest.