Resonators for the pulsation damping in plunger pumps
Pressure pulsations on high pressure pumps often have to be reduced to meet the requirements of the installation. Resonators, i.e. pulsation dampers, are most suitable for this purpose. Contrary to hydro pneumatic dampers, resonators are maintenance-free as they do not have any moving parts, bladders or diaphragms nor require any gas filling. The pulsation
damping is due to the partial reflection of the pressure waves in the resonator.
Resonators give excellent damping results within a wide range of pressures and pump speeds. Their functional efficiency at low and very high temperatures is of great importance particularly where aggressive fluids are used.
Technical Specifications
Choice of design
The choice of design (cylindrical or spherical) has little influence on the
function of the resonator. Normally the choice is made on the basis of
the manufacturing facilities for the resonator and also any site restrictions and requirements of the pump installation.
Characteristics of various pulsation damper designs
Typical products
Measured pressure regulations - With/Without resonator damping
High pressure pump unit P5-70 with suction and discharge sided resonators and lube oil system
High pressure pump unit KD823E
