垃圾渗滤液处理装置用MVR水蒸气压缩机的研制

简单介绍了垃圾渗滤液对大气、水、土壤产生的二次污染。依托已有项目合同对垃圾渗滤液处理装置用MVR水蒸气压缩机进行研制,列举了机组在研制过程中遇到的技术难点及创新点,对机组的研发意义进行了简要说明。

Longitudinal type-line optimization of high-speed train for low aerodynamic noise

The basic head shape of high-speed train is determined by its longitudinal type-line(LTL),so it is crucial to optimize its aerodynamic performance.Based on the parametric modeling of LTL constructed by non-uniform relational B-spline(NURBS)and the fluctuation pressure obtained by large eddy simulation(LES),the Kriging surrogate model(KSM)of LTL was constructed for low aerodynamic noise,and the accuracy of the KSM was improved gradually by adding the sample point with maximum expected improvement(EI)and the optimal point from optimization.The optimal objective was searched with genetic algorithm(GA).The results show that the total fluctuation pressure level(FPL)of the optimal LTL can be 8.7 dB less than that of original one,and the shape optimization method is feasible for low aerodynamic noise design.

GM 鼓风机系列改进型产品研发介绍

GM型离心鼓风机,于1995年引进至今,被广泛应用于市政污水、石油化工、食品药品、金属冶炼及丙烯酸等各行各业。虽然系列化程度较高,但效率、压比、流量范围等性能指标均照比其他国外技术要低。通过对新机型的规划,提升了机组整体效率,扩大机组覆盖流量范围,极大的提高了产品竞争力,将科研成果转化为生产力。