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针对长江重庆段水体在夏季细砂含量高、不易直接作为热泵水源的问题,设计了旋流除砂器,并应用数值模拟方法,就所设计的旋流除砂器的入口速度、入口砂粒浓度和密度对各粒径砂粒分离效率的影响进行研究,以期得出旋流除砂器的最佳操作参数。研究结果表明,随着入口速度、入口砂粒密度的增大,各粒径砂粒的分离效率均有不同程度的提高;而随着入口砂粒浓度的增加,小粒径砂粒的分离效率降低,较大粒径砂粒的分离效率先降低后逐渐增大。
In view of the high fine sand content in the Chongqing section of the Yangtze River in the summer, it is not easy to be directly used as a heat pump water source. The swirler desilter was designed and the numerical simulation method was used to analyze the inlet velocity, inlet grit concentration And density on the particle size of sand separation efficiency of the study to get the best swirl desander operating parameters. The results show that with the increase of inlet velocity and inlet grit density, the separation efficiency of each particle size sand increases to some extent. With the increase of inlet grit concentration, the separation efficiency of small particle grit decreases, Particle size sand separation efficiency first decreased and then gradually increased.