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FSI simulation of the suction valve on the piston for reciprocating compressors.

Author(s) : WU W., GUO T., PENG C., LI X., ZHANG Z., XU L., HE Z.

Type of article: IJR article

Summary

The suction valve is an essential one-way valve inside the reciprocating compressor controlling the suction gas flow. It is usually installed on the cylinder head of the compressor. However, the suction valve in oil-free mini compressors was preferred to be installed on the piston to cool down the bearing inside the piston by the suction flow. In this case, the motion of the piston will act varying accelerated speed on the valve plate. During its opening process, the valve plate would be pushed by resultant force of the inertia force generated by the accelerated speed and the flow thrust together. It would result in too high valve lift and deformation, and decrease the reliability of the valve plate extremely. For this reason, the stiffness of the valve on the piston should be greater than that on the cylinder head. However, stiffness strengthened valve plate moving with the piston would behaves oscillation motion during its opening and closing process. In this paper, a three-dimensional fluid-structure interaction (FSI) model validated by experiments was established using ADINA to study the oscillation motion of the valve installed on the piston. Obtained results showed that the lift integral of the valve on the piston was 4.5% less than that of the valve on the cylinder head, and the impact speed on the valve seat of the valve on the piston was smaller than that of the valve on the cylinder head, which indicated that the suction valve installed on the piston had higher reliability.

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Pages: 14-21

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Details

  • Original title: FSI simulation of the suction valve on the piston for reciprocating compressors.
  • Record ID : 30029484
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 137
  • Publication date: 2022/05
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2022.01.028
  • Document available for consultation in the library of the IIR headquarters only.

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