Abstract To develop a reliable wet gas flowrate measurement model, the relationships between pressure drop characteristics and entrainment downstream of the cone are investigated experimentally. The equivalent diameter ratio of the cone is 0.45. The experimental fluids are air and tap water with XLM in the range of 0–0.3. The two-phase mass flow coefficient and pressure loss ratio are employed to establish the measurement model. The piecewise characteristics of pressure loss ratio are disclosed innovatively, which is explained by the different intensity of entrainment downstream of cone caused by gas-liquid jetting. A simplified method for evaluating the degree of entrainment is proposed to facilitate the establishment of the modified measurement model. Under the present experimental conditions, the relative error of liquid fluctuates within ±20% when XLM is larger than 0.02, and the relative error of gas flowrate is within ±5%. Compared with the model without piecewise consideration, the relative error of the liquid flowrate of the modified model reduces obviously under low wetness conditions (0.02

中文翻译：

---

考虑锥形流量计下游夹带的湿气流量测量修正模型

摘要 为了开发可靠的湿气流量测量模型，实验研究了压降特性与锥体下游夹带之间的关系。锥体的当量直径比为0.45。实验流体是空气和自来水，XLM 在 0-0.3 的范围内。采用两相质量流量系数和压损比建立测量模型。创新性地揭示了压力损失比的分段特征，这是由气液喷射引起的锥体下游夹带强度不同来解释的。提出了一种评估夹带程度的简化方法，以促进修正测量模型的建立。在目前的实验条件下，XLM大于0.02时，液体相对误差在±20%以内波动，气体流量相对误差在±5%以内。与不考虑分段考虑的模型相比，修正模型的液体流量相对误差在低湿度条件下（0.02