8字形盘密封螺旋泵吸入能力理论与数值模拟研究

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中图分类号：TH327 文献标志码：A

DOI： 10.7652/xjtuxb202605010 文章编号：0253-987X（2026）05-0102-09

Numerical Simulation and the Oretical Study on the Suction Capacity of the 8-Shaped Disc Sealed Screw Pump

LI Chaoqing， SUN Jiaxuan， LIU Xiaoyu， ZHANG Longju， WANG Zongming， LIU Zhaozeng，WANG Zengli （Collge of New Energy， China University of Petroleum （East China），Qingdao，Shandong 26658o，China）

Abstract： The suction capacity of the 8-shaped disc sealed screw pump，which serves a preferred pumping device for offshore oil spill recovery and treatment，cannot be accurately characterized， severely limiting its widespread application. By combining numerical simulation and theoretical calculation，the suction characteristics of the figure-eight disk seal screw pump were studied. A numerical simulation model for the pressurization flow process of the 8-shaped disc sealed screw pump was constructed using the ANSYS CFX immersed solid method to analyze its pressurization flow mechanism and suction characteristics. On this basis，by coupling the structural features of the meshing pair and the principles of spatial meshing，a theoretical calculation model for the suction capacity of the 8-shaped disc sealed screw pump was established to accurately determine its suction capacity. The influence of various operating conditions and parameters on suction capacity was investigated， and a comparison was made with traditional circular disk seal screw pumps. The results show that the suction capacity of the 8-shaped disc sealed screw pump ranges from a minimum of 2.484 （suction capacity greater than l meets suction requirements） to a maximum of 3.482. At the minimum suction capacity， the maximum density of the suction medium can reach （2号 6000kg⋅m-3 and the maximum screw speed can reach 1550r⋅min-1 . Compared to traditional circular disk seal screw pumps，the density of the suction medium is increased by 69.5% ，and the maximum screw speed is increased by 34.8% . The findings of this study provide a reference for the design optimization and industrial application of 8-shaped disc sealed screw pumps.

Keywords： 8-shaped disc sealed screw pump; suction capacity； immersed solid method; pressurization flow mechanism

海上油气资源开发伴随着显著的溢油风险[1-2]，且海上溢油黏度高，含有毒有害物质，如不及时处理将严重危害海洋生态[3-4]，而要实现溢油的快速处置，高效泵送是关键。（剩余14367字）