Engineering Services
High Expenses caused by Piping System Vibrations
Conventional methods for the reduction of vibrations in piping systems often require a rather intense intervention in the piping system, causing high cost in terms of construction, time and money.
The AVA – a Wölfel Innovation
- AVA with pipe segment
In order to circumvent the above mentioned problems Wölfel developed an Active Pipe Vibration Absorber, AVA, which strongly reduces pipe vibrations in a broad frequency range. The AVA is a two-degrees-of-freedom system consisting of two actuators and one joint reaction mass, reducing all vibrations normal to the pipe axis.
Application of the AVA
The AVA is applied to the pipe and is activated one-time. There are no additional efforts and expenses. Compared to mostly heavy passive absorbers the effectiveness does not depend on the absorber mass, but only on the actuator force. A vibration reduction up to factor 15 can be reached with a mass ratio of only 1 %.
The possibility of installing the active absorber in any location at the pipe without requiring an abutment, this location allows to be selected only according to structural-dynamics requirements, is the main advantage over passive absorbers.
Changes of the pipe system such as thermal fluctuation are unproblematic thanks to the robust control algorithm – the AVA always works reliably and with optimum settings.
- Best performance in vibration reduction:
broad band attenuation of up to 90 %
