摘要
分析60 MN卧式钢管热挤压机组液压系统在高压卸载、蓄能器卸载、挤压扩孔等工艺动作启停等状况下产生震动的原因,并提出具体的控制措施。分析认为:调整液压泵高压出口调压卸载阀块中的控制油路中的阻尼孔通径,可有效降低液压系统高压卸载产生的高压冲击震动;调整蓄能器卸载阀块中锥阀阀芯开口度,可降低高压蓄能器高压卸载时产生的震动;适当减小设备启动及停止的加速度参数,可减小设备的受力,减小震动;控制液压泵及主电机接手状态,从而控制机械震动。上述改进措施的落实,使60 MN卧式钢管热挤压机组液压系统的震动得到有效控制,降低了液压震动对设备造成的危害,稳定了设备状态,确保了生产的顺畅进行。
Analyzed are reasons responsible for the shocks as occurring with starts and stops of the process operations of the hydraulic system of the 60 MN horizontal hot-extrusion pipe mill such as high-pressure unloading,unloading of the accumulator,and extrusion expanding,etc.As a result the actions as follows are proposed.The hi-pressure impact shock as produced by the hydraulic system via hi-pressure relief can be obviously reduced be means of adjusting the damping hole orifice in the oil control circuit of the pressure-adjusting/relief valve block as mounted at the hi-pressure outlet of the hydraulic pump;the shock as produced by hi-pressure relief of the hi-pressure accumulator can be lessened by means of adjusting the opening of the cone valve spool of the accumulator relief valve block;the equipment shock can be reduced by means of properly reducing the acceleration parameters for start and stop of the equipment so as to lessen the loading of the equipment;and the mechanical shocks can be controlled via properly controlling the coupling between the hydraulic pump and the main electric motor.Thanks to implementation of all the actions as above mentioned,the shocks produced by the hydraulic system of the said hot-extrusion pipe mill have been obviously controlled,the harms to the equipment as imposed by the hydraulic shocks are mitigated.As a result the equipment status is kept consistent,and thus smooth manu-facture operations are guaranteed.
作者
周强
ZHOU Qiang(Steel Tube Business Department,Specialty Steel Co.,Baoshan Iron and Steel Co.,Ltd.,Shanghai201900,China)
出处
《钢管》
CAS
2019年第6期54-58,共5页
Steel Pipe
关键词
钢管
热挤压机组
60
MN
液压震动
优化控制
steel tube
hot-extrusion pipe mill
60 MN
hydraulic shock
optimized control
