DOI：10.3969/j.issn.1672-3872.2025.24.001
基金项目：湖南省自然科学基金项目（2023JJ50485、2023JJ50088）；湖南省科技创新计划资助项目（2022RC1140）；湖南省教育厅科学研究项目（22A0607）
作 者：李 勇 ，易 奥 ，王 舒 ，林 鹏（湖南人文科技学院能源与机电工程学院，湖南 娄底 417000）
摘 要：【目的】引入轴向螺旋式进气方式，提高气力清淤浓度和效率。【方法】根据气力提升系统结构特性，基于Fluent仿真软件构建气-液两相流气力提升系统模型，分析了不同角度螺旋式进气方式对气力提升系统性能的影响以及三种不同作业方式对气力提升系统扬固效率的影响。【结果】浸入率γ=0.8时，气力提升系统效率随进气角度的增加呈现先增加后减小的趋势，在进气角度ŋ10º时达到最高值；气力提升系统在先下降再横移的作业方式下，扬沙量以及沙石浓度最高；VOF模型可以很好地预测并观察气力泵气-液两相流下的流动情况。【结论】本研究可为污水处理、气举采油、液态重金属冷却核反应堆和磁流体动力转换器等应用领域的气力提升技术优化提供科学的理论基础。
关键词：气力泵；进气方式；数值模拟；两相流
Simulation and Experimental Study on Performance Enhancement of Spiral Inlet Pneumatic Pump
Author: Li Yong, Yi Ao, Wang Shu, Lin Peng
(School of Energy and Mechanical and Electrical Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, China)
Abstract: [Objective] To introduce an axial spiral intake method to improve the concentration and efficiency of pneumatic dredging. [Method] Based on the structural characteristics of the pneumatic lifting system, a gas-liquid two-phase flow pneumatic lifting system model was constructed using Fluent simulation software. The influence of different angles of spiral intake on the performance of the pneumatic lifting system and the impact of three different operating modes on the lifting efficiency of the pneumatic lifting system were analyzed. [Result] When the immersion rate γ=0.8, the efficiency of the pneumatic lift system shows a trend of first increasing and then decreasing with the increase of the intake angle, reaching the highest value at the intake angle ŋ10º. Under the operation mode of first descending and then moving horizontally in the pneumatic lifting system, the amount of sand lifted and the concentration of sand and gravel are the highest. The VOF model can effectively predict and observe the flow conditions of gas-liquid two-phase flow in pneumatic pumps. [Conclusion] The study can provide a scientific theoretical basis for the optimization of pneumatic lift technology in application fields such as sewage treatment, gas lift oil recovery, liquid heavy metal cooled nuclear reactors, and magnetohydrodynamic converters.
Keywords: pneumatic pump; air intake mode; numerical simulation; two phase flow
引文信息：[1]李勇，易奥，王舒，等.螺旋进气式气力泵提升性能仿真及试验研究[J].南方农机，2025，56(24)：1-7+34.
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