金属软管振动隔离的数值模拟与实验研究  

Numerical Simulation and Experimental Study on Vibration Isolation of Metal Hose

作　　者：周强[1] 卢阳[1] 贾晓晗[1] 冯建美[1] 彭学院[1] 

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《压缩机技术》2017年第6期1-5,10,共6页Compressor Technology

摘　　要：针对压缩机组隔振后橇外管路的振动问题,对橇外管路分别采用刚性管和金属软管2种连接管路进行模态和谐响应分析,并通过实验验证了计算结果。结果表明:刚性管连接的管路振动速度变化很小,而金属软管连接能使管路从85.73 mm/s的振动速度降到25 mm/s以下,具有良好的振动隔离特性,同时满足了美国石油学会(API)618标准对于管道振动安全评定的标准。为了进一步提高隔振效果,可通过采取加固支撑的振动控制措施,把金属软管在橇内连接处的振动进行有效控制,使其振动幅值较小。同时通过改变惯量使金属软管下游管路避开低阶共振。研究成果对降低橇外管路的振动具有直接的指导意义。Aiming at an unexpected vibration problem occurred on the skid outside pipe of the compressor unit after vibration isolation, the modal analysis and harmony response analysis are carried out by using the rigid pipe and the metal hose respectively, and the calculation results are verified by the experiment. It was indicated that the vibration velocity of the pipe connected with the rigid pipe has little change, while the metal hose can reduce the vibration velocity of the pipe from 85.73 mm/s to 25 mm/s or less, providing good vibration isolation and meeting the US API618 for pipeline vibration safety assessment standards. In order to further improve the vibration isolation, the vibration of the metal hose skid inner connection can be effectively controlled by the reinforcement support to make the vibration amplitude smaller. At the same time change the inertia of the metal hose downstream pipe to avoid low-order resonance. The research results have direct practical guiding significance to reduce the vibration of the skid outside pipe.

关 键 词：金属软管 橇外管路 振动隔离 低阶共振 

分 类 号：TH45[机械工程—机械制造及自动化]