基于正交试验的车载氢气瓶用先导阀优化设计

Optimization Design of Pilot Valve for Vehicle Hydrogen Bottle Based on Orthogonal Test

以燃料电池汽车车载氢气瓶用的先导阀作为研究对象,针对其体积小、功率小、磁力大的需求现状,对其进行磁力性能优化。以电磁理论为基础,采用有限元软件Maxwell建立先导阀二维模型,研究先导阀中各结构参数以及材料对先导阀性能的影响。通过对先导阀的动铁芯吸合面外径、动铁芯吸合面内径、静铁芯吸合面直径、线圈匝数以及材料等参数进行了仿真模拟,计算分析各参数下电磁力与位移之间的关系,筛选出3个主要影响参数;采用正交试验法对所选参数进行优化,获得优化参数组合;与原模型相比,优化后的先导阀模型电磁力增大了25%,且铁芯吸合面直径减小约10%。

Taking the pilot valve for fuel cell vehicle hydrogen bottle as the research object,aiming at its small size,low power and high magnetic demand,the magnetic performance is optimized.Based on the electromagnetic theory,the finite element software Maxwell was used to establish the two-dimension-al model of the pilot valve,and the effects of structural parameters and materials on the performance of the pilot valve were studied.Through the simulation of the parameters of the pilot valve,such as the outer diameter of the moving iron core suction surface,the inner diameter of the moving iron core suction surface,the diameter of the static iron core suction surface,the number of turns of the coil and the material,the relationship between the electromagnetic force and the displacement under each parameter is calculated and analyzed,and three main influencing parameters are selected.The selected parameters were optimized by orthogonal test method to obtain the optimized parameter combination;compared with the original model,the electromagnetic force of the optimized pilot valve model increases by 25%,and the diameter of the iron core suction surface decreases by about 10%.