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SELF-EXCITED VIBRATIONS OF RECIPROCATING COMPRESSOR PLATE VALVES.

Author(s) : ZIADA S., SHINE S. J., BUHLMANN E. T.

Summary

THE SELF-EXCITATION MECHANISM CAUSING THE FLUTTER OF PLATE VALVES IS EXPERIMENTALLY INVESTIGATED UNDER STEADY STATE CONDITIONS. THE RELATION BETWEEN THE PLATE OSCILLATIONS AND THE RESULTING PRESSURE PULSATIONS IS ESTABLISHED. MOVEMENTS OF THE VALVE PLATE PRODUCE FLUID FORCES WHICH ARE DESTABILIZING BECAUSE THEY ARE IN PHASE WITH THE VELOCITYOF THE PLATE. ACOUSTIC RESONANCES OF THE PIPING SYSTEM ARETGI. THE STIFFNESS OF THE VALVE SPRINGS HAS VERY LITTLE INFLUENCE ON THE VIBRATION FREQUENCY. WHILST THE SYSTEM OSCILLATION IS SUSTAINED, THE VALVE PLATE STAYS PARALLEL TO THE SEAT, BUT SUBSTANTIAL PLATE TILTING ELIMINATES THIS VIBRATION. THE VIBRATIONS CAN BE ELIMINATED BY USING UNEVENLY DISTRIBUTED SPRINGS WHICH FORCE THE VALVE PLATE TO TILT WHILE OPENING.

Details

  • Original title: SELF-EXCITED VIBRATIONS OF RECIPROCATING COMPRESSOR PLATE VALVES.
  • Record ID : 1987-0907
  • Languages: English
  • Publication date: 1986/08/04
  • Source: Source: Proc. 1986 int. Compress. Eng. Conf., Purdue Univ.
    vol. 1; 398-414; 10 fig.; 6 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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