Maintenance-free pulsation dampening Resonators


Resonators for the pulsation damping on 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...

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. L ges Characteristics of various pulsation damper designs Design of the resonator Bladder accumulator Diaphragm accumulator Single chamber resonators Cylindrical Regular checks on precharge pressure necessary Medium having high temperatures (>120°C) Variable operating pressure Precharge pressure must be adjusted...

Recommendations regarding the installation of resonators Installation on discharge side of plunger pump: Do not install any shut-off and control valves between pump and resonator. Distance between pump and resonator has to be as short as possible. Min. radius of 90° pipe bends not to be below 5 times of the pipe diameter. Resonator Pump Possible ways of installation: Vent Resonator Pump URACA GmbH & Co. KG ■ Sirchinger Str. 15 ■ 72574 Bad Urach ■ Germany Phone +49 (0) 7125/133-0 ■ Fax +49 (0) 7125/133-202 ■ [email protected] ■ www.uraca.com Design may be subject to modification. Dimensions, weights,...