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VACUUM ›› 2024, Vol. 61 ›› Issue (6): 26-32.doi: 10.13385/j.cnki.vacuum.2024.06.05

• Vacuum Acquisition System • Previous Articles     Next Articles

Development of a New Centrifugal Vacuum Unit with Large Displacement and High Pressure Ratio

QI Da-wei, CHEN De-jiang, LÜ De-run   

  1. Hypersonic Aerodynamics Institute of China Aerodynamics Research and Development Center, Mianyang 621000, China
  • Received:2024-04-09 Online:2024-11-25 Published:2024-11-29

Abstract: With the increasing requirement of the suction efficiency of vacuum pumping equipment in large vacuum system, the suction capacity of traditional Roots vacuum unit is obviously insufficient, which can not meet the application requirements. In this paper, the centrifugal vacuum pump with large displacement, wide pressure and high rotating speed is applied to large-scale high vacuum system, and a new type of centrifugal vacuum unit is developed, which combines centrifugal vacuum pump, Roots vacuum pump and water ring vacuum pump in series. The composition of centrifugal vacuum unit and the development process of this centrifugal vacuum pump is introduced, its extreme performance and load are tested. The results show that the pumping capacity, ultimale pressure and operational stablity of the unit meet the design requirements. This unit has the characteristics of small footprint, high operation efficiency and strong pumping capacity, and is the best pumping scheme for large-scale high vacuum system at present.

Key words: vacuum system, Roots vacuum unit, centrifugal vacuum pump, aerodynamic design

CLC Number:  TH452

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