A gas compressor based on a piston-type acoustic resonator

Major differences are pointed out between the design and working principles of a piston acoustic gas compressor and piston-based pumps and compressors. Working forms are given for the amplitude of the gas speed oscillation in the tube and the compressor throughput. The throughput is calculated for a tube of length 3.5 m with internal diameter 0.04 m and piston stroke length of 0.004 m. It exceeds that of a normal piston compressor with the same energy consumption by a factor of 8.     

大型往复式天然气压缩机块状基础的振动分析

根据大型往复式天然气压缩机块状基础设计或振动分析的需要 ,采用了一种简化的模型进行了基础的动态分析。基础动力分析的常见方法是按几种独立振动和耦合振动分别进行分析讨论 ,研究了几种可能的振动模式。使用矩阵方法对几种振动模式进行了综合 ,同时研究了压缩机基础的质量矩阵和刚度矩阵 ,并解析计算了基础的几种振动模式及其固有频率 ,给出了对称平衡型天然气压缩机基础振动的幅频响应的表达式。     

无固定连接式压缩机基础的动力特性及数值优化

合理设计天然气压缩机的地基基础可以减轻压缩机的振动影响,对保证压缩机的稳定运行和天然气的正常输送都具有重要的作用。为此,首先依托实际工程,通过现场试验对无固定连接式压缩机基础在动力作用下的特性进行了研究;然后利用ANSYS 15.0建立了无固定连接式压缩机基础的有限元模型并进行验证;最后通过该模型对地基承载力及垫层厚度进行了数值优化。研究结果表明:(1)机组底橇与基础之间的砂石垫层具有良好的减振效果,其动力作用的影响随深度的增加而减弱;(2)利用有限元模型对无固定连接式压缩机基础进行数值模拟计算的压缩机位移响应及应力响应与原位动力测试及现场压力测试数据吻合较好,说明所建立的模型较为合理;(3)在压缩机激振频率为7.3 Hz的条件下,地基承载力为80 kPa时基础自振频率最小(5.0 Hz),地基承载力为100 kPa时基础自竖向位移最小(0.092 mm),优化后的地基承载力为120 kPa;(4)机组自振频率随垫层厚度的增加而呈现出先增后减再增的变化特征,垫层厚度为200 mm和400 mm时的自振频率均为6.3 Hz,为保证垫层的减振效果,建议垫层厚度取值为400 mm。     

压缩机驱动方案比较

通过对电机驱动压缩机与透平驱动压缩机两种方案的分析与比较,确定了既节省能源消耗又节省工程投资的方案。     

Simulating a compressor pump for handling gas-liquid mixtures

Assumptions are given that are used in describing the processes in the compressor chamber of a pumping and compression plant (PCP). The stages in the working process are described in that chamber for one turn of the crankshaft in the pump. The basic equation is derived for the temperature variation in the gas under external forces in any of the four stages of the working process over short time intervals. The simulation results for an individual compressor chamber also give diagrams for the forces and opposing moments and provide for more accurate determination of the energy parameters of the PCP at the stages of design and operation.     

Influence of cooler fouling on compressor reliability

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 11, pp. 1–3, November, 1991.