液压启闭机机架螺栓破坏机理分析  

Failure Analysis on Bolts of Hydraulic Cylinder Rack

作　　者：邹今春[1] 王海峰[1] 彭哲凯 ZOU Jinchun;WANG Haifeng;Peng Zhekai(PowerChina Northwest Engineering Corporation Limited, Xi'an 710065,China;Jiangsu Wujin Hydraulic Hoist Co.,LTD, Changzhou 213100,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065 [2]江苏武进液压启闭机有限公司,常州213100

出　　处：《西北水电》2022年第3期104-107,共4页Northwest Hydropower

摘　　要：液压启闭机是弧形闸门主要启闭设备,其运行状态监测与健康管理关系电站运行安全。通过一起液压启闭机机架螺栓破坏的案例,计算缸体封闭腔油液温度变化对缸内压力的影响,分析结果表明油缸无杆腔因温升引起腔内压力过大,导致机架上拔力超出临界范围是造成机架螺栓失效、基础破坏的根本原因。并根据原因分析提出了液压启闭机的运行维护建议。Hydraulic hoist is the main hoisting equipment for radial gate.The condition monitoring and health magagement of the hydraulic hoist relates to the safty operation of the hydropower plant.A bolts failure case in which the bolts were used to fix the hydraulic cylinder rack to the concrete foundation is analized.The influence of the oil temperature rising on the pressure of enclosed cavity is discussed.For the rising of the pressure in piston cavity,the up-pulling force on the cylinder rack exeeded the allowable limit,which resulted in the failure of cylinder rack bolts as well as the fundation.Suggestions about hydraulic hoist maintenance are put forward based on the analysis of the case.

关 键 词：液压启闭机 运行维护 油液温升 压力 

分 类 号：TD403[矿业工程—矿山机电]