Pulsation dampeners or snubbers are specialized devices that use a nitrogen-charged bladder to absorb the pressure spikes and surges created by reciprocating pumps. They help reduce pulsations from 45% down to as low as 2%.
The back-and-forth see-saw effect of pulsation can cause pumps to stop working well. Over time, pulsation damages critical, system components. Pulsation in reciprocating pumps, also called positive displacement pumps, leads to performance and longevity.
Power Flow’s oilfield pump engineers use dampeners to fix pulsation. Dampeners act like shock absorbers in a car, helping smooth the pulsation and keep the pump running smoothly.
Power Flow Can Help with Cost-Effective, Lightweight Options to Manage Your Reciprocating Pump’s Pulsation Problems
Pulsation Dampeners
Applications:
Suction stabilizer
Discharge dampener
Surge protection
Thermal/volume expansion compensators
Flow measurement
Small and lightweight for easy installation
Dampener Design Types:
Bladder/cartridge (elastomer)
Diaphragm
Bellows
Gas-Free (Cellular or Fluid)
Volumes from 23 cubic inch to 1200 cubic inch
Bladder type – gas-filled design
Great performance in an affordable and durable package
A top-repairable/serviceable design for quick access
Flow-through & Maintenance-Free styles available
Performance Issues in Reciprocating Pumps Caused by Pulsation
Pulsation in reciprocating pumps can result in:
Vibration
Pulsation causes vibrations throughout the pump and associated piping, contributing to premature wear and potential failure of pump components. The system’s rapid fluid flow and pressure changes will cause this vibration.
Cavitation
Another consequence of pulsation is cavitation, where rapid pressure changes create bubbles in the liquid. These bubbles can implode violently near pump impellers and bearings, causing damage and reducing pump efficiency over time.
Noise
Pulsation generates noise that can be disruptive to operators and nearby residents. Excessive noise can mask important operational sounds that might indicate underlying pump issues requiring attention.
Managing Pressure Pulsation with Dampeners
To mitigate the adverse effects of pulsation, dampeners can be installed at the discharge side of reciprocating pumps. These devices help regulate pressure and flow variations, thereby prolonging the pump’s service life.
How Pulsation Dampeners Work
Pulsation dampeners act as shock absorbers filled with compressed gas and process fluid, separated by a flexible bladder or diaphragm. They effectively smooth out pressure spikes and fluctuations caused by the pump’s reciprocating action.
Vulnerable Components
Components such as valves, seals, bearings, and piping are particularly susceptible to damage from the dynamic forces induced by pulsating flow. Over time, this wear can lead to diminished pump performance, increased maintenance needs, and premature equipment failure.
Conclusion
Understanding and managing pulsation in reciprocating pumps are critical for maintaining operational efficiency and extending the lifespan of pumping systems. By implementing appropriate dampening solutions and monitoring system performance, operators can mitigate the risks associated with pulsation and ensure reliable pump operation in industrial applications.
Who Makes Dampeners for Use on Reciprocating Pumps to Manage Pulsation?
Power Flow sells pulsation dampeners to fit reciprocating pumps of the following manufacturers:
