除油水力旋流器溢流口结构试验研究

An experimental investigation on the structure of the overflow mouth of a deoiling hydrocyclone

通过对旋流器溢流口结构的深入研究。设计出3种新型溢流口结构──涡流屏蔽罩式、涡流屏蔽罩和涡流探测管组合式以及实心涡流屏蔽管式溢流口。利用MARVERN激光粒度仪，在室内模拟试验装置上进行了分离性能测试，并从粒级效率和压力降两方面综合评价了3种溢流口结构的分离性能。测试和分析结果表明，溢流口直径越小，分离效率越高，压降也略有增大；涡流屏蔽罩式、涡流屏蔽罩和涡流探测管组合式溢流口可以降低压降7％以上，而分离效率基本不变；实心涡流屏蔽管式溢流口和带下倾角的入口流道组合可以大大降低旋流器的压降。

Three new-type structures of overflow mouth were designed-the vortex tube type,the vortex tube and vortex detecting tube type, and the solid vortex detecting tube type with researches of the overflow mouth struture of hydrocyclones. A separation performance test was made in a simulation test unit by using MARVERN laser hondrometer,and the separation performance of the overflow mouths of three types was comprehensively estimated in gradation efficiency and pressure drop.The results of test and analysis show that the smaller the diameter of the overflow mouth was,the higher the separation efficiency,and the pressure drop increased a little, the overflow mouths of the vortex tube,vortex tube and vortex detecting tube could reduce the pressure drop by over 7%, and the separation efficiency only varied a little, the combination of the solid vortex tube overflow mouth with arc cold largely reduce the pressure drop of the hydrocyclone.