水清洗装备的真空引水罐结构设计

Structure design of the vacuum tank of the rinsing equipment

为保证处于高位的水泵工作过程中正常吸水作业,水清洗车采用了真空引水罐结构。针对水清洗车工作条件和空间,设计了具有内部支架的真空引水罐,以减少钢板的变形。按照强度条件计算水箱的尺寸和加强筋的尺寸,并以真空罐的稳定性为原则,设计吸水管的直径。然后利用ANSYS Workbench软件对水箱在最大真空状态下的受力进行了分析,结果表明该水箱的结构在最大真空状态下是安全的,说明设计是合理的。基于通用计算流体力学软件Fluent的VOF(volume of fluid)模型,RNGK-ε湍流模型,模拟计算真空罐的整个吸水过程,得到真空罐工作过程的各阶段水相的变化、内部压强的变化和吸水管的受力变化。模拟了不同吸水管直径的真空罐工作状态,对模拟结果进行了对比,说明吸水管直径的设计是合理的。

To ensure the pump at high position work normally,a vacuum tank has been applied to the rinsing vehicle. We designed the structure of the vacuum tank for the specific working conditions and space of the rinsing vehicle. We added an internal frame inside the tank to reduce the deformation of steel,calculated the size of the tank and the reinforcing ribs based on the strength requirements,and determined the diameter of the suction pipe based on the stability requirements of the tank. We analyzed the stress on the tank at maximum vacuum state using ANSYS workbench,and the result showed that the tank was safe at maximum vacuum state. We simulated the water suction process of the tank using VOF model and RNG turbulence model of Fluent,and obtained the changes of water phases,internal pressure and stress on the pipe during the water suction process. We also simulated the working state of the tank with different suction pipe diameters,and compared the results to prove that the design of the tank was reasonable.