Types of dampers

A. Liquid Damper

  • Very efficient in most of the cases
  • Economical especialy if the damper is used as a top platform
  • Do not need any maintenance
  • No wear
tod1.jpgLiquid damper on top of a 60 m stack used as a top platform
tod2.jpgSet of three annular Liquid damper to stabilize 3* 30 m stack (repair work of vibrating stacks)
tod3.jpgLiquid dampers on a flare stack with its heatshield protection (repair of vibrating flare)

 

B. Cable Tuned Mass Damper

  • Very efficient in most of the cases
  • Very little need of maintenance
  • No wear in most cases

C. Dashop Tuned Mass Damper

  • Efficient and economical in most somes cases especially if critical velocity is high and number of vibration cycles is low.
  • Need of maintenance especially if high number of vibrating cycles
  • Wear and replacement to be considered if high number of vibrating cycles
dam1.jpgPlan View of Dashpot
Tuned Mass Damper
dam2Dashpot units – compressed
and extended



D. Viscous Tuned Mass Damper

  • Very efficient in most of the cases
  • Do not need any maintenance
  • No wear
vm1.jpg42 t moving mass at 183 m with 5 viscous damping units
vm2.jpg450 kg moving mass with a viscous damping unit enclosed in a tank

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DOCUMENTATION

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