气液混输压缩器内部流场分布特性和气体压缩性能研究OA

Under high gas-liquid ratio conditions,the gas-liquid hydrocyclone has poor separation effect.Therefore,a gas-liquid mixed transport compressor is proposed,which compresses the gas and reduces the gas-liquid ratio before the gas-liquid two-phase enters the hydrocyclone.The CFD numerical simulation method was used,and the dimensionless parameter gas compressibility η was introduced to study the internal flow field distribution characteristics of the gas-liquid mixed transmission compressor and the influence of gas compression performance under different inlet gas volume fractions.The results show that due to the rotational centrifugal effect,gas aggregation and gas-liquid separation occurred in the compressor in both compression stages,and then this phenomenon gradually weakened in the flow channel.As the inlet gas volume fraction increases,the change in the gas volume fraction of the compressor increases first and then decreases.When the inlet gas volume fraction is 40%,the compressor gas volume fraction changes the most,decreasing by 7.53%.At this time,the pressure increase value is 32.25 kPa,and the gas density ratio at the outlet is 1.47.As the inlet gas volume fraction increases,the gas compressibility η decreases.When the inlet gas volume fraction is 10%,the gas compression rate is the largest,which is 37.4%,and the compressor has the best compression performance.Meanwhile,the pressure increase value is 50 kPa,and the gas density ratio at the outlet is 1.97.