Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (12): 1754-1759.DOI: 10.12068/j.issn.1005-3026.2020.12.013

• Mechanical Engineering • Previous Articles     Next Articles

CFD-based Performance Analysis of a Discharge Valve Plate in the Rolling Rotor Compressor

DENG Wen-juan, ZHANG Ying-li, DING Jia-nan, BA De-chun   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2020-02-05 Revised:2020-02-05 Online:2020-12-15 Published:2020-12-22
  • Contact: BA De-chun
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Abstract: Based on the CFD(computer fluid dynamics) model of the verified rolling rotor compressor, the periodic gas load of the valve plate is obtained, and the transient dynamic analysis and fatigue life prediction of the discharge valve plate are carried out by using the Workbench software. The influence of the geometric parameters of the valve on the flow area and the life of the valve plate is analyzed. It is found that the flow area and fatigue strength of the valve plate are related to the thickness of the valve plate and the characteristic lift of the valve plate. Under the specific conditions with the valve plate thickness of 0.305mm and the characteristic lift of the valve plate of 2.5mm, ideal performance results are obtained while the flow area and fatigue life of the valve plate are taken into account too. On this basis, the retainer profile is optimized, the flow area of the optimized valve plate increases by 8.63%, and the maximum stress decreases by 107.4MPa. The research results provide an effective reference and evaluation method for the design of discharge valve plate of rolling rotor compressor.

Key words: compressor discharge valve plate, computer fluid dynamics(CFD), finite element method, numerical simulation, optimization

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