变配重的节能技术及其能耗机理分析  

Energy-saving Technology of Variable Counterweight and Its Energy Consumption Analyses

作　　者：杨华勇[1] 胡东明[1,2] 徐兵[1] 

机构地区：[1]浙江大学流体传动及控制国家重点实验室,杭州310027 [2]浙江省特种设备检验研究院,杭州310020

出　　处：《机械工程学报》2010年第2期132-138,共7页Journal of Mechanical Engineering

基　　金：国家杰出青年基金资助项目(50425518)

摘　　要：针对目前液压垂直提升机械中存在着能耗大、效率低的问题,提出一种变配重的节能方法。阐述变配重的节能思想,介绍液压配重可变和机械配重速度可变两种节能方案;重点对液压配重可变的系统在液压升降系统中的应用进行论述,对其装机功率、功耗、系统效率及恶劣工况进行详细分析,并将其与常规变频液压升降系统进行对比,结果表明采用变配重液压系统装机功率和能耗分别降低约67%、35%,效率提高30%,具有较好的节能效果;讨论变配重系统目前存在的问题,包括系统效率、配重预存储能量、动态特性等,针对这些问题提出相应的对策;最后对变配重节能技术的发展前景做了展望。To solve the disadvantages of high energy consumption and low efficiency in hydraulic lift system, an innovative energy-saving technology of variable counterweight is proposed. The energy-saving concept is given and the working principles of two kinds of variable counterweight system are introduced, namely variable hydraulic counterweight and mechanical counterweight with variable speed. And the system applying the variable hydraulic counterweight is discussed in detail, including the installed power, the energy consumption, the efficiency and the poor working condition. Compared with the conventional variable voltage variable frequency （VVVF） hydraulic system, the installed power and energy consumption of the system with variable hydraulic counterweight decreases by 67% and 35% respectively, and the efficiency increases 30%, which means the system saves energy remarkably. Then the problems of the system are discussed, mainly involving efficiency, dynamic response and so on, and the solutions are presented. Finally, the development of the variable counterweight technology is prospected.

关 键 词：液压升降系统 能耗 节能 变配重 变频 

分 类 号：TH137[机械工程—机械制造及自动化]