Mitigation of high-frequency pulsations, using Multi Bore Restriction Orifices
conference paper
In reciprocating fluid displacement systems, a trend toward high-speed machinery and application of stepless reverse-flow capacity control system is observed. Badly designed compression systems may cause excessive high-frequency noise and vibration levels, which are a risk from a structural integrity point-of-view. Furthermore, noise levels, conflicting with both environmental and HSE legislation may result in reduced system capacity or even process shutdown. Therefore, a robust system design should focus on the mitigation of high-frequency pulsations in an early design stage. This paper highlights the multi-bore orifice plates (MBRO’s) as powerful damping devices of in-line, highfrequency pressure pulsations. MBRO’s provide efficient pulsation damping behavior at high frequencies (up to 1 kHz) where conventional (single bore) orifices plates fail. Within the TNO research program, in collaboration with Hoerbiger, prediction models have been developed that describe the static and dynamic performance of MBRO’s. Experimental validation confirms the validity of these models. The models have been integrated in the TNO prediction tools (PULSIM) for pulsation analysis of reciprocating fluid machinery.
TNO Identifier
490395
Source title
5th Conference of the EFRC, 21-23 March 2007, Prague, Czech Republic
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