The gas suction rate of a conventional liquid–gas ejector pump was measured on a modular pilot plant unit utilizing convergent nozzles and a water–air system. Hydraulic characteristics were measured for various water flow rates, suction and discharge pressures, and ejector geometries, covering a wide range of configurations and operating conditions. The device configurations, providing the most stable and reproducible results, were identified. The air flow rates measured with these configurations were correlated by a simple, three-parameter correlation with a relative standard deviation (RSD) of 11%. The performance and behavior of the ejector in less stable configurations are discussed and the recommendations for the design of optimally operating units are provided. Finally, the correlation is tested against available literature data. The ejectors with comparable geometry agree well with the proposed correlation (within 20% RSD). The reasonable agreement with the discussed differences is found for other literature data. This comparison results in the validation of the proposed correlation to provide a safe prediction of minimal gas entrainment in units of various geometries, orientation and operating conditions.

传统的液体-气体喷射泵的气体吸入率是在使用中空喷嘴和水-空气系统的模块化中试装置上进行测量的。测量了各种水流量，吸入和排出压力以及喷射器的几何形状的水力特性，涵盖了广泛的配置和操作条件。确定了提供最稳定和可重复结果的设备配置。用这些配置测量的空气流速通过简单的三参数关联和11％的相对标准偏差（RSD）进行关联。讨论了喷射器在不太稳定的配置中的性能和行为，并提供了有关最佳操作单元设计的建议。最后，针对相关文献数据对相关性进行测试。具有可比几何形状的喷射器与建议的相关性非常吻合（RSD在20％以内）。对于其他文献数据，可以找到与所讨论差异的合理一致性。该比较结果验证了所提出的相关性，以提供以各种几何形状，方向和操作条件为单位的最小气体夹带的安全预测。