摘要
采用椭圆簇法,以轴流式止回阀阀芯中阀瓣型线和导流罩型线的丰满系数为设计变量,进行组合优化设计。由均匀试验设计获得8组方案,为了提高插值精度和可靠性同时补充8组试验结果,数值试验后由Biharmonic样条插值获得阀瓣丰满系数和导流罩的丰满系数最优组合,最终得到压力损失最小的阀瓣型线和导流罩型线。结果表明:由Biharmonic样条插值获得的阀瓣型线丰满系数为0.574,导流罩型线丰满系数为0.986,数值试验得到理论最小压降值为524.06 Pa,流阻系数为0.26。对最小压降值对应阀瓣和导流罩型线组合进行数值模拟验证,得出仿真结果为525.50 Pa,误差为0.27%。对比优化前轴流式止回阀的流阻系数1.73,优化后轴流式止回阀流阻系数比优化前降低了84.97%,减阻明显。
Taking the fullness coefficients of the valve flap profile line and the shroud profile line in the spool of the axial flow check valve as design variables,the combination optimization design is carried out by using the elliptic cluster method.Eight groups of schemes are obtained by uniform experimental design.In order to improve interpolation accuracy and reliability,eight groups of experimental results are supplemented.After numerical experiments,the optimal combination of fullness coefficients of the valve flap profile line and the shroud profile line is obtained by Biharmonic spline interpolation,and finally,the valve flap profile and the shroud profile with minimum pressure loss are achieved.The results show that the fullness coefficient of the valve flap profile line obtained by Biharmonic spline interpolation is 0.574,and that of the shroud profile line is 0.986.From numerical experiments the theoretical minimum pressure drop is 524.06 Pa and the flow resistance coefficient is 0.26.The minimum pressure drop corresponding to the combination of the valve flap profile line and the shroud profile line is verified by numerical simulation.The simulation result is 525.50 Pa with an error of 0.27%.Compared with the axial flow check valve before optimization,the flow resistance coefficient decreases by 84.97%from 1.73,and the drag reduction is obvious.
作者
张立强
李梦科
张云杰
张延斌
伍国果
ZHANG Li-qiang;LI Meng-ke;ZHANG Yun-jie;ZHANG Yan-bin;WU Guo-guo(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;KCM Valve Co.,Ltd.,Wenzhou 325024,China;School of Intelligent Manufacturing Engineering,Chongqing University of Arts and Sciences,Chongqing 402160,China)
出处
《液压气动与密封》
2020年第8期7-12,共6页
Hydraulics Pneumatics & Seals
基金
国家自然科学基金(51565027)
甘肃省自然科学基金(17JR5RA120)
重庆市教委科学技术研究项目(KJQN201801329)。
