摘要
为了解决V型球阀在相对较小开度下等百分比特性较差的问题,首次提出了一套对V型球阀阀芯的设计优化流程。该流程采用数值模拟、样本均值评估及面积平均等效法来计算DN50V型球阀阀芯等百比特性系数RQ,并用实验来验证流程的合理性,进一步推广到其他型号的球阀中。结果表明,原始DN50V型球阀阀芯在开度28.6%到7.1%区域不符合等百比特性,经优化设计后球阀阀芯的等百比特性系数RQ得到了有效改善,提升水平接近一倍多,并且通过试验测量所得等百比特性系数超出优化设计结果;进一步在DN80V型球阀阀芯中进行推广,可知这种优化设计方法具有普遍适用性;V型球阀阀芯设计优化方法效率高、数值可靠,能够提升阀芯流量控制水平,提高阀芯设计能力。
In order to solve the problem that the percentage characteristic of V-shaped ball valve is poor at the relatively small opening degree,a design optimization flow of valve core is proposed for the first time.The process uses numerical simulation,sample mean evaluation and area average equivalence to calculate the equal percentage characteristics coefficient RQ of DN50 V-shaped ball valve core,and uses experiments to verify the rationality of the process,and further extends it to other models of ball valves.The results show that the original DN50 V-shaped Ball valve core does not meet the equal percentage characteristics in the opening area of 28.6%to 7.1%.After the optimized design,the equal percentage characteristics coefficient RQ of the ball valve core has been effectively improved,and the level of increase has more than doubled.And the equal percentage characteristics coefficient obtained by test exceeds the optimized design results.Further extended in the DN80 V-shaped ball valve core,it is known that this optimization design method has universal applicability;V-shaped ball valve core design optimization method is an efficient and reliable valve core design method,can improve the level of Valve core flow control,improve the valve core design ability.
作者
张皓男
王国峰
赵巧男
ZHANG Hao-nan;WANG Guo-feng;ZHAO Qiao-nan(Key Laboratory of Clean Combustion for Electricity Generation and Heat-Supply Technology of Liaoning Province,Liaoning Shenyang110136,China)
出处
《机械设计与制造》
北大核心
2021年第4期100-103,共4页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(51406123)
辽宁省教育厅资助项目(XNZD-1808)。
关键词
V型球阀
等百分比特性
优化设计
仿真模拟
流量特性
V-Shaped Ball Valve
Equal Percentage Characteristics
Optimized Design
Analogue Simulation
Flow Characteristics
