往复式压缩机缓冲罐振动分析与控制

Vibration Analysis and Control of Buffer Tanks of Reciprocating Compressors

针对某储气库往复式压缩机组一级进气缓冲罐振动超标问题,对进气缓冲罐的振动及压力脉动进行测试分析,结合数值仿真分析讨论引起压缩机组进气缓冲罐振动超标的主要因素。为了有效解决缓冲罐振动超标问题,提出更改缓冲罐结构、安装刚性支撑和改变缓冲罐进气方向等振动治理方案,并进行数值仿真验证。根据现场工艺要求和条件,完成一级进气缓冲罐的现场改造,并进行现场振动测试分析和评价,结果表明治理后振动速度最大值为7.83 mm/s,压力不均匀度为0.945%,均满足API(American Petroleum Institute)618标准要求。压缩机组进气缓冲罐振动治理实施效果表明,所提出的减振措施有效降低进气缓冲罐的振动,延长了缓冲罐的使用寿命并提高了其可靠性。

In order to explore the over-standard vibration of the first-stage intake buffer tank of a reciprocating compressor in an underground gas storage,a vibration test and pressure fluctuation test were carried out on the intake buffer tank.Combined with the numerical simulation and data analysis,the main factors causing the over-standard vibration of the intake buffer tank were discussed.To effectively solve the over-standard vibration of the buffer tank,some vibration control measures were proposed,such as changing the structure of the buffer tank,installing rigid supports and changing the inlet direction of the buffer tank.Moreover,a numerical simulation verification was implemented on the reconstructed structure.According to the on-site technological requirement and specification,the modification of the first-stage inlet buffer tank was fulfilled.Furthermore,some relevant tests were carried out on the buffer tank after the modification.The analysis results indicate that the maximum vibration velocity is 7.83 mm/s and the pressure inhomogeneity is 0.945%,which meets the relevant requirements of the American Petroleum Institute(API)618 standard.The vibration reduction measures provided in this study have effectively reduced the vibration of the intake buffer tank,which can extend the service life and improve the reliability of the buffer tank.