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

doi:10.7652/xjtuxb202605010

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

更新时间：2026-04-27

- Numerical Simulation and the Oretical Study on the Suction Capacity of the 8-Shaped Disc Sealed Screw Pump
- Journal of Xi'an Jiaotong University Vol. 60, Issue 5, Pages: 102-110(2026)
- 作者机构：
  
  中国石油大学（华东）新能源学院，266580，山东青岛
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202605010
  CLC： TH327
- Received：16 June 2025，
  
  Published：10 May 2026
- 稿件说明：
移动端阅览
LI Chaoqing, SUN Jiaxuan, LIU Xiaoyu, et al. Numerical Simulation and the Oretical Study on the Suction Capacity of the 8-Shaped Disc Sealed Screw Pump[J]. Journal of Xi'an Jiaotong University, 2026, 60(5): 102-110.
DOI：

LI Chaoqing, SUN Jiaxuan, LIU Xiaoyu, et al. Numerical Simulation and the Oretical Study on the Suction Capacity of the 8-Shaped Disc Sealed Screw Pump[J]. Journal of Xi'an Jiaotong University, 2026, 60(5): 102-110. DOI： 10.7652/xjtuxb202605010.

摘要

作为海面溢油回收处理的优选泵送装置的8字形盘密封螺旋泵吸入能力无法准确表征，严重限制了其推广应用，结合数值模拟与理论计算，针对8字形盘密封螺旋泵吸入特性展开研究。运用ANSYS CFX浸入实体法构建了8字形盘密封螺旋泵增压流动过程的数值计算模型。分析了螺旋泵的增压流动机理，耦合啮合副结构特征和空间啮合原理，构建8字形盘密封螺旋泵吸入能力理论计算模型，准确求解其吸入能力，探究了各工况和运行参数对吸入能力的影响规律，并与传统的圆盘密封螺旋泵进行了对比。研究结果表明：8字形盘密封螺旋泵的吸入能力最小值为2.484（吸入能力大于1即满足吸入需求），最大值为3.482，且在吸入能力最小时，吸入介质的密度最大可达6000 kg·m

-3

，螺杆转速最大可达1550 r·min

-1

，与传统的圆盘密封螺旋泵相比，吸入介质的密度提高了69.5%，螺杆最高转速提高了34.8%。该研究结果可为8字形盘密封螺旋泵的设计优化与产业化应用提供参考。

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 t

he 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 1 meets suction requirements) to a maximum of 3.482. At the minimum suction capacity

the maximum density of the suction medium can reach 6000 kg·m

-3

and the maximum screw speed can reach 1550 r·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.

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