三甘醇脱水装置再生模块减振技术研究与应用

Research and application of vibration dampening technology of TEGdehydration unit regeneration module

大型天然气橇装设备长距离运输过程中,在一定工况下管道运动剧烈,产生较大变形,管道连接件长时间暴露在变载荷情况下易松动,对设备造成损坏。针对某三甘醇脱水装置再生模块,结合三甘醇脱水装置往复泵往复振动特性,利用有限元技术分析橇装设备在过坑、制动、侧倾三种典型工况,及交变载荷激励下的模态刚度、应力、应变分布,提出支撑方案并进行有限元分析验证。在动力学仿真环境下建立橇装运输系统刚柔耦合模型,对优化方案进行仿真验证。仿真验证结果表明,结构优化后三甘醇脱水装置再生模块振动情况得到明显改善,路面激励与往复泵往复振动对设备整体稳定性的影响明显减小,橇装设备因振动而损坏的可能性大大降低。研究结果证明采用增加支撑的方法能够有效提高三甘醇脱水装置再生模块的结构稳定性和运输安全性,可为类似工程提供一定借鉴。

During the long-distance transportation of large natural gas skid-mounted equipment systems,the piping vibrates violently under certain transportation conditions,resulting in large deformation.Long duration exposure under variable load condition causes the loosening of pipe joints and damage to the equipment.Based on reciprocating vibration characteristics of the recirculation pump,this paper studied the distribution of modal stiffness,stress and strain of the skid mounted equipment in a triethylene glycol(TEG)dehydration unit under vertical,braking,tilting conditions during transportation and alternating load excitation conditions during operation with finite element analysis technology.A structural and piping support scheme was formulated and verified by finite element analysis.The rigid-flexible coupling model of skid-mounted transportation system was established under the dynamic simulation environment,and the optimized support scheme was simulated and verified.The results show that,by optimizing the unit structure,the vibration of TEG dehydration unit regeneration skid is significantly dampened;the impact of road excitation and reciprocating vibration of operating recirculation pump on the overall stability of the equipment is significantly reduced;the possibility of damages to the skid equipment due to vibration is greatly reduced.The use of additional supports can effectively improve the structural stability and transportation safety and integrity of the TEG dehydration unit regeneration module,and serves as a good reference for similar projects.