受限空间离心真空泵进气管道气动优化设计

doi:10.13385/j.cnki.vacuum.2025.02.05

Abstract

Abstract: Aiming at the problem that the inlet flow of large-scale centrifugal vacuum pump is difficult to distribute uniformly in parallel operation in confined space, the aerodynamic analysis of four-way and five-way inlet pipes of centrifugal vacuum pump is carried out by numerical simulation analysis. The aerodynamic structure with uniform inlet flow, small flow pressure loss and uniform flow distribution is obtained, and it is verified by practical application. The results show that the strategy of dividing intersecting cone into two and then dividing into four is an effective four-way and five-way diversion strategy in confined space. Under the condition that the length of the front and rear air inlet paths is quite different, it is difficult to meet the flow uniformity and flow resistance matching at the same time, so the rectifier is designed to match the flow resistance difference. The practical test results of pressure difference between the main pipeline and inlets of optimized pneumatic structure and their flow rate are consistent with the calculated results, indicating that the design method is effective and feasible.

Key words: confined space, centrifugal vacuum pump, five-way inlet pipe, pneumatic structure

CLC Number: TH452

QI Dawei, LI Chuanxu, CHEN Dejiang, ZHAO Shunhong. Aerodynamic Optimization Design of Intake Pipe of Centrifugal Vacuum Pump in Confined Space[J].VACUUM, 2025, 62(2): 35-41.

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Aerodynamic Optimization Design of Intake Pipe of Centrifugal Vacuum Pump in Confined Space

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