【摘要】 针对300 MN模锻液压机实际生产中存在的变压器回程时间过长而无法长行程加压故障,基于AMESim软件建立了变压系统的仿真模型并进行了故障仿真,定量地得到了变压器操纵分配器排水阀开启度与充液罐压力对回程时间的影响规律。推导出变压器发生无法长行程加压故障的条件并将其应用于现场故障分析,结果表明:将凸轮顶杆与排水阀阀杆间隙减小4.6 mm以上可消除该故障。更多还原

【Abstract】 In order to analyze the fault of hydraulic transformer which failed to work in long-stroke pressurizing because of its too long return time,a simulation model about hydraulic transformer system of 300MN forging hydraulic press was established based on AMESim software.The influence of opening height of drain valves and pressure of liquid-filled tank on the return time of hydraulic transformer was simulated quantitatively.The condition,which would result in fault,was obtained and used to analyze the actual fault.The result shows that the fault can be eliminated through reducing the space between the cam plunger and drain valve stem by 4.6 mm.更多还原