PRESSURE PULSATIONS CAUSED BY RECIPROCATI NG PUMPS IN PIPE SYSTEMS

Pressure Pulsations Caused by Reciprocating Pumps in Piping Systems. T he safe design of piping installations for reciprocating pumps require s proper knowledge about the pump/installation interaction. In many ca ses critical resonance effects can be avoided by proper piping geometr y or improved pump performance with respect to the volumetric efficien cy (primary measures). Normally it is necessary to use various seconda ry dampening methods which can influence the acoustics of the piping s ystem. Several examples of experimental computer simulations of damper action - upstream and downstream - are presented for fluid- and gas-f illed damper versions. The influence of entry geometry of the dampers is explained, hints on the proper geometry of the entries are given an d the effects of various dampers and their influence on the total acou stics are discussed. Special reference is made to the effect of orific es as dissipative and acoustic elements in piping systems.The investig ation shows the importance of analyzing of the total system of pump, p iping installation and vessels or reactors and the application of comp uter simulation for piping design.