升船机多液压站柔性智能制动技术  

Flexible and intelligent break technology with multi-hydraulic station for ship lifts

作　　者：廖乐康 唐勇 LIAO Lekang;TANG Yong(Changjiang Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430010,China)

机构地区：[1]长江勘测规划设计研究有限责任公司,湖北武汉430010

出　　处：《人民长江》2020年第8期151-157,共7页Yangtze River

基　　金：国家重点研发计划项目(2016YFC0402002)。

摘　　要：全平衡垂直升船机驱动系统载荷的大小和方向具有随机分布的特点,从而形成了发电工况和电动工况2种载荷状态。传统单泵站集中控制安全制动系统采用的是预设制动力矩制动方案,对所有工况采用统一的双阶梯形制动力曲线实施紧急制动,不适合齿轮齿条爬升式升船机驱动系统多液压站分散控制安全制动系统,难以解决该系统发电工况和电动工况紧急制动加速度过大的问题。在总结三峡和向家坝升船机多液压站分散控制安全制动系统设计的基础上,提出了针对不同载荷工况和载荷大小实施不同制动策略的柔性智能制动方案,即在发电工况和轻载电动工况采用速度闭环反馈控制制动,在重载电动工况实施零速制动,从而显著降低了安全制动系统紧急制动加速度,保证了升船机在事故工况下紧急制动的安全性。The drive systems of full balance vertical ship lifts have the characteristics of randomness of load in magnitude and direction,which results in two load states called generation case and drive case.The conventional pre-set torque break technology for the safety break systems of single hydraulic station integrated control applies a single break torque with double-step shape in any case once the urgent break direction is given,which is not suitable to the safety break systems with multi-hydraulic station distributed control of drive applied in the drive systems of the rail and pinion full balance vertical ship lifts,as high break acceleration occurs.Based on summary of the design of the safety break systems of the Three Gorges ship lift and Xiangjiaba ship lift,this article puts forward a flexible and intelligent break scheme for the safety break systems with multi-hydraulic station distributed control,by which the speed closed loop feedback control is applied for break in the generation case and light load drive case,and the zero speed break is applied for the heavy load drive case.By adopting this break control scheme,the break acceleration in both the generation case and drive case is evidently lowered,and safety of ship lifts in emergency break is assured.

关 键 词：齿轮齿条爬升式升船机 安全制动系统 多液压站分散控制 柔性智能制动 速度闭环反馈控制 零速制动 

分 类 号：U642[交通运输工程—船舶及航道工程]