摘要
为解决中亚天然气管道压气站RR(Rolls Royce)机组平衡管出现剧烈振动,引起平衡管管口开裂的问题,对CCS7压气站的压缩机及平衡管进行振动测量,基于数值方法模拟压缩机振动引起平衡管振动和气流脉动引起的平衡管振动问题,获得了压缩机、平衡管及附属管道的振动速度和振动频率。发现在高转速工况下压缩机振动频率和气流脉动频率均能够引起平衡管共振,造成平衡管剧烈振动,当输气量控制在4.2×107m3/d以下能够有效减小气流脉动引起的共振现象。据此在平衡管不同位置安装U形管卡可以达到减振效果,当U形管卡安装于距离同心异径接头焊缝800~950 mm处可以起到较好的减振效果。研究成果可为解决平衡管振动问题提供实例参考,同时可为未来天然气压气站管道设计和压缩机选型提供技术支持。
To solve the problem of balance pipe nozzles cracking due to violent vibration of balance pipe of RR(Rolls Royce) unit in the compressor station of Central Asia Natural Gas Pipeline, the vibration of the compressor and balance pipe in CCS7 compressor station were measured.Based on the numerical simulation method, the vibration of balance pipe caused by compressor vibration and the vibration of balance pipe caused by gas pulsation were simulated, and the vibration speed and frequency of the compressor, balance pipe and auxiliary pipes were obtained.It was found that the vibration frequency of compressor and the frequency of gas pulsation can both cause the resonance of balance pipe at high rotation speed, resulting in the violent vibration of the balance pipe.When the gas transmission rate is controlled below 4.2×10~7 m~3/d, the resonance phenomenon caused by gas pulsation can be effectively reduced.Therefore, the installation of U-shaped pipe clamps at different positions of the balance pipe could reduce the pipe vibration effectively when the clamps are installed at 800~950 mm from the welding seam of the concentric reducer.The results provide an example reference for solving the vibration problem of balance pipe, and provide technical support for pipeline design and compressor selection of natural gas compressor station in the future.
作者
杨放
袁运栋
林青
杨志
邓琳纳
武庆国
侯世宇
Yang Fang;Yuan Yundong;Lin Qing;Yang Zhi;Deng Linna;Wu Qingguo;Hou Shiyu(Sino-Pipeline International Company Limited)
出处
《石油机械》
北大核心
2023年第1期122-132,共11页
China Petroleum Machinery
基金
国家自然科学基金项目“考虑滑动磨损的动态管缆疲劳寿命研究”(51509034)。
关键词
天然气管道
压气站
平衡管振动
压缩机振动
管道减振
natural gas pipeline
compressor station
vibration of balance pipe
compressor vibration
pipeline vibration reduction
