Gas–liquid separation is widely used in various fields. And the centrifugal separator has been witnessed as a worldwide popularity owing to its small size and high efficiency. However, the uncertainty of the inlet flow pattern limits the wide application of centrifugal separators. In this paper, a new gas–liquid separator combining gravity separation and centrifugal separation was proposed for complex and unstable two-phase flow. In this study, the performance of the separator under different liquid flow rates with wide gas volume fraction range from 5% to 90% was investigated experimentally, and the phenomena occurred in the separator were also analyzed. The results show that the separator can keep high-efficiency separation in multiple flow patterns as long as the liquid level in the downcomer is at a reasonable position. Meanwhile, the lowest and highest allowed liquid levels were defined and measured by the pressure difference and a ruler. Furthermore, the bubble column in the downcomer was analyzed.

气液分离广泛应用于各个领域。离心分离器由于其小尺寸和高效率而被公认为世界范围的流行。然而，入口流型的不确定性限制了离心分离器的广泛应用。本文针对复杂和不稳定的两相流，提出了一种新的结合重力分离和离心分离的气液分离器。在这项研究中，实验研究了分离器在不同的液体流量下，气体体积分数范围从5％到90％时的性能，并分析了分离器中发生的现象。结果表明，只要降液管中的液位处于合理位置，分离器就可以在多种流态下保持高效分离。与此同时，最低和最高允许液位由压力差和标尺定义和测量。此外，分析了下降管中的气泡塔。