基于AMESim的液压抗冲击系统设计与仿真

发布时间：2018-05-22 13:42

本文选题：蓄能器 + 液压锁　；参考：《哈尔滨工业大学》2011年硕士论文

【摘要】：在生产过程中经常会出现压力冲击问题,它常发生在启闭阀门、液压泵突然开停、执行元件的紧急制动、换向阀突然换向时。这种冲击严重时会使管子爆裂,损坏仪表和密封装置并产生很大的振动和噪声,严重威胁生产安全。在化工生产中常常出现这种冲击现象,如在腈纶生产线中的挤水环节,就常因为换向阀突然换向而产生压力冲击,对挤水液压缸的稳定造成了影响,冲击大时甚至使得生产停止。所以如何减小液压冲击的问题显得至关重要。本文以克服压力冲击为主题,独特地从三个不同的角度考虑来解决冲击问题。从吸收压力冲击角度考虑可以使用蓄能器;从隔断压力冲击角度考虑可以使用液压锁;从反馈压力冲击角度考虑可以使用伺服控制系统。三种系统的设计都能满足单泵多执行器的工作要求,使系统能够平稳工作而不受压力波动的影响。所以本文的主要内容是三种抗冲击系统的设计和仿真。首先,对三种系统的工作原理和主要元件的结构进行研究;其次,分析系统的抗冲击原理,建立数学模型并仿真分析;最后为了仿真实际腈纶生产线上的液压冲击,用AMESim软件建立了三种系统的模型并进行仿真分析。
[Abstract]:In the process of production, pressure shock often occurs when the valve is opened and closed, the hydraulic pump is suddenly opened and stopped, the actuators are actuated by emergency braking, and the directional valve is suddenly reversed. When the impact is serious, the pipe will burst, damage the instrument and seal device, and produce a lot of vibration and noise, which seriously threaten the safety of production. This kind of impact phenomenon often occurs in chemical production. For example, in the water extrusion link of acrylic fiber production line, the pressure shock is often caused by the sudden reversing of the reversing valve, which has an impact on the stability of the hydraulic cylinder. When the impact is great, production even stops. So how to reduce the problem of hydraulic impact is very important. This paper deals with the problem of shock from three different angles with the theme of overcoming pressure shock. The accumulator can be used from the angle of absorbing pressure shock, the hydraulic lock can be used from the angle of separating pressure shock, and the servo control system can be used from the angle of feedback pressure shock. The design of the three systems can meet the requirements of single pump and multiple actuators, so that the system can work smoothly without the influence of pressure fluctuation. So the main content of this paper is the design and simulation of three shock-resistant systems. Firstly, the working principle of the three systems and the structure of the main components are studied. Secondly, the anti-impact principle of the system is analyzed, and the mathematical model is established and simulated. Finally, in order to simulate the hydraulic impact on the actual acrylic fiber production line, The models of three kinds of systems are established by AMESim software and the simulation analysis is carried out.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH137.9

【引证文献】