液体粘性软启动装置启动平稳性研究

Research on the Soft Start-up Performance of Hydro-viscous Drive

介绍了液体粘性软启动装置的基本工作原理和结构。分析了造成液体粘性软启动装置启动平稳性不良的主要原因———作为液体粘性软启动系统转速调节阀的常规比例溢流阀在小流量低压工况下压力调节线性度和压力稳定性不够。研究开发的一种新型液体粘性软启动装置转速调节阀,具有优良的压力调节线性度和压力稳定性,能够显著提高液体粘性软启动装置在对输送机进行软启动过程中的启动平稳性,满足工业实际需要。

The principles and structures of Hydro-viscous Drive（HVD） set were introduced. Through theoretical analysis of the HVD set start--up steadiness the authors come to the conclusion that non-linearity of the pressure performance curve and dynamic pressure instability of the pilotoperated electro-hydraulic pressure relief valve , which was used for the HVD speed regulating purpose and usually worked within micro flow-rate and low oil pressure state, were the main causes of the poor start-up steadiness. So a special speed regulating valve for HVD set is developed, with which the start-up steadiness of HVD set is much improved.