天然气输气站工艺管线流致振动分析及控制研究

PDF(1531 KB)

振动与冲击 ›› 2023, Vol. 42 ›› Issue (16) : 278-283.

论文

岑康1,2，温韵巧1,2，魏星3，李浩然3，韩宗芷3，李佳忆4

作者信息 +

Analysis and control on flow-induced vibration of process piping in natural gas transmission stations

CEN Kang1,2, WEN Yunqiao1,2, WEI Xing3, LI Haoran3, HAN Zongzhi3, LI Jiayi4

Author information +

文章历史 +

摘要

针对某天然气输气站调压器后工艺管线出现的强烈振动现象，现场测试了实际运行工况下关键部位的振动参数。结合振动源激励频率、管线固有频率以及各测点的测试数据与频谱特性，对管线振动原因进行了分析，提出了减振优化方案，并对整改后管线的减振效果进行了评价。研究结果表明：管线振动位移最大峰峰值为0.76 mm，振动速度最大峰峰值为44.84 mm/s，均已超过最大许用值；管线响应频率与振动源激励频率、管线固有频率均为12.5 Hz，振动源激励频率与管线固有频率重合激发共振是该站管线强烈振动的根本原因，振动激励源主要来自调压阀出口天然气的压力脉动；新增调压阀T2管路并利用其对原调压阀T1管路进行分流，振动源激励频率由12.5 Hz降低至8.5 Hz，完全避开了共振区，减振效率达到62.4%~77.2%，有效地解决了管线强烈振动问题。

Abstract

The strong vibration of the process piping behind the pressure regulator in a natural gas transmission station was stimulated under the large transportation capacity. The vibration parameters at key positions under the actual operating conditions, the excitation frequency of vibration source and the natural frequencies of piping were tested in the field to investigate the cause and severity of the vibration. In addition, the schemes for vibration reduction were proposed, and the actual damping effects after piping rectification were evaluated simultaneously. The results indicate that the maximum peak-to-peak value of piping vibration displacement and velocity are 0.76 mm and 44.84 mm/s respectively, which have drastically exceeded the maximum allowable thresholds. In addition, the response frequency of the piping, the excitation frequency of the vibration source and the natural frequency of the piping are all equal to 12.5 Hz. It shows that the intense resonance is caused by the coincidence of the excitation frequency of the vibration source and the natural frequency of the piping. The excitation source mainly comes from the strong pressure pulsation generated by the gas pressure regulator under the large transportation capacity. After adding the piping of pressure regulating valve T2 and shunting the piping of pressure regulating valve T1, the excitation frequency is reduced from 12.5 Hz to 8.5 Hz, and the vibration reduction efficiencies are between 62.4% and 77.2%.

导出引用

岑康1,2，温韵巧1,2，魏星3，李浩然3，韩宗芷3，李佳忆4. 天然气输气站工艺管线流致振动分析及控制研究[J]. 振动与冲击, 2023, 42(16): 278-283

CEN Kang1,2, WEN Yunqiao1,2, WEI Xing3, LI Haoran3, HAN Zongzhi3, LI Jiayi4. Analysis and control on flow-induced vibration of process piping in natural gas transmission stations[J]. Journal of Vibration and Shock, 2023, 42(16): 278-283

参考文献

[1] 梁政,李双双,张梁,等.往复式压缩机工艺管线振动超标与治理[J].天然气工业,2015,35(02):87-91.
LIANG Zheng, LI Shuangshuang, ZHANG Liang, et al. Analysis and treatment of abnormal vibration of reciprocating compressor pipelines [J]. Natural Gas Industry,2015,35(02):87-91.
[2] LIU E B, WANG X J, ZHAO W W , et al. Analysis and research on pipeline vibration of a natural gas compressor station and vibration reduction measures [J] . Energy & Fuels, 2021, 35(01):479-492.
[3] 丁林,邹瑞,张力,邹群峰.基于拓扑网格方法的多钝体流致振动分析[J].振动与冲击,2019,38(22):236-243.
DING Lin, ZHOU Rui, ZHANG Li, et al. Analysis on the flow-induced motion of multiple bluff bodies based on topological mesh [J]. Journal of Vibration and Shock,2019,38(22):236-243.
[4] LI Y, QUAN K, WU R, et al. Numerical simulation and experimental validation of large pressure pulsation in reciprocating compressor[J].Energy Pro-cedia,2019,160: 606-613.
[5] 李柏松,苏建峰,张兴,等.输油泵进出口管道振动诊断方法[J].油气储运,2021,40(01):21-25.
LI Baisong, SU Jianfeng, ZHANG Xing, et al. Vibration diagnosis method of oil pump inlet and outlet pipes [J]. Oil & Gas Storage and Transportation, 2021,40(01):21-25.
[6] LEE S H, RYU S M, JEONG W B. Vibration analysis of compressor piping system with fluid pulsation[J].Journal of Mechanical Science and Technology,2012,26(12): 3903-3909.
[7] LOH S K, FARIS W F, HAMDI M, et al. Vibrational characteristics of piping system in air conditioning outdoor unit[J]. Science China(Technological Sciences),2011,54(05):1154-1168.
[8] GAO P X, YU T, ZHANG Y L, et al. Vibration analysis and control technologies of hydraulic pipeline system in aircraft: A review[J].Chinese Journal of Aeronautics,2021,34(04):83-114.
[9] 肖斌,周玉龙,高超,等.考虑流体附加质量的输流管线振动特性分析[J].振动与冲击,2021,40(15):182-188.
XIAO Bin, ZHOU Yulong, GAO Chao, et al. Analysis of vibration characteristics of pipeline with fluid added mass [J]. Journal of Vibration and Shock,2021,40(15):182-188.
[10] 张子祥,王检耀,王鸿东,等.弹性约束充液管线的振动模态试验与预报研究[J].振动与冲击,2021,40(15):1-10.
ZHANG Zixiang, WANG Jianyao, WANG Hongdong, et al. Vibration modal tests and prediction of liquid filled pipeline with elastic constraints [J]. Journal of Vibration and Shock, 2021,40(15):1-10.
[11] KHUDAYAROV B A , KOMILOVA K M . Vibration and dynamic stability of composite pipelines conveying a two-phase fluid flows [J]. Engineering Failure Analysis,2019,104:500-512.
[12] KHUDAYAROV B A , KOMILOVA K M , TURAEY F Z. Numerical study of the effect of viscoelastic properties of the material and bases on vibration fatigue of pipelines conveying pulsating fluid flow[J]. Engineering Failure Analysis,2020,115:104635.
[13] 陈星文,蔡奕霖,秦洁.核电厂主蒸汽管线流致声振动优化方法研究[J].振动与冲击,2021,40(24):299-304.
CHEN Xingwen, CAI Yilin, QIN Jie. A study on optimization of flow induced acoustic vibration in a main steam line [J]. Journal of Vibration and Shock, 2021,40(24):299-304.
[14] WU J, ZHENG S Y. Field measurement and numerical study of the vibration in the pipeline of centrifugal compressor [J]. Journal of Pressure Vessel Technology, 2019,141(05):051602.
[15] CVKLIS P. Advanced techniques for pressure pulsations modeling in volumetric compressor manifolds [J]. Journal of Vibration and Acoustics, 2010,132(06):064501.
[16] LIANG Z, LI S S, TIAN J L, et al. Vibration cause analysis and elimination of reciprocating compressor inlet pipelines [J]. Engineering Failure Analysis,2015,48:272-282.
[17] 王训锋.天然气压缩机管路系统气流脉动及管道振动研究[J].石化技术,2019,26(10):52-56.
WANG Xunfeng. Study on Gas Fluctuation and Pipeline Vibration in Pipeline System of Natural Gas Compressor [J]. Petrochemical Industry Technology,2019,26(10):52-56.
[18] 刘恩斌,廉殿鹏,苏中亚,等.天然气压气站管线异常振动及减振措施研究[J].中国安全生产科学技术,2021,17(09):39-44.
LIU Enbin, LIAN Dianpeng, SU Zhongya, et al. Research on abnormal vibration and vibration reduction measures of pipelines in natural gas compressor station [J]. Journal of Safety Science and Technology,2021,17(09):39-44.
[19] LI S S, ZHANG L W, KONG C Y, et al. Vibration Failure Analysis and Countermeasures of the Inlet Pipelines at a Gas Compressor Station[J]. Shock and Vibration,2019,2019:01-08.
[20] 李树勋,康云星,潘伟亮,等.往复式压缩机管道振动分析与优化[J].流体机械,2019,47(02):58-64.
Li Shuxun, Kang Yunxing, Pan Weiliang, et al. Analysis and Optimization of Pipeline Vibration of Reciprocating Compressors[J]. Fluid Machinery,2019,47(02):58-64.
[21] 袁淋,梁中红,姜林希,等.元坝气田笼套式节流阀故障及处理措施[J].油气储运,2018,37(08):941-946+951.
YUAN Lin, LIANG Zhonghong, JIANG Linxi, et al. Faults and treatment measures of corbula-type throttle valves in Yuanba Gas Field [J]. Oil & Gas Storage and Transportation,2018,37(08):941-946+951.
[22] American Petroleum Institute. Standard API 618 Reciprocating compressors for petroleum chemical, and gas industry services[S].5th ed. Washington DC: API, 2007.
[23] DL/T 1103, 核电站管线振动测试与评估[S]. 北京: 中国电力出版社, 2009.
[24] DL/T 292, 火力发电厂汽水管线振动控制导则[S]. 北京: 中国电力出版社, 2011.
[25] LONG G P, XIONG H T, MAO H L. Measurement of Resonant Frequencies of Large Size Engineering Structures with Hammer Hitting[M]. Journal of Guangxi University：Natural Science Edition, 1999.
[26] 韩清凯,于涛,孙伟.机械振动系统的现代动态设计与分析[M].北京:科学出版社,2010.
HAN Qingkai，YU Tao，SUN Wei. Modern dynamic design and analysis of mechanical vibration system[M].Beijing :Science Press,2010.