Hydraulic Rerates & Pump Efficiency

During a mechanical seal replacement at a major gas plant, a reliability engineer identified that their API OH2 centrifugal pump was operating below the Minimum Continuous Stable Flow (MCSF).

In this case, Hydro Rocky Mountain partnered with HydroTex Deer Park‘s engineering team to provide the customer with an innovative solution by utilizing the existing casing and providing a redesigned impeller to optimize the overall efficiency and life cycle of the unit.

Watch as Ares Panagoulias and Glen Powell, of Hydro’s test lab, examine the historic operating conditions in regard to the pump’s best efficiency point (BEP) and provide a performance test to validate the upgrades and modifications.

Case Study: Hydraulic Rerates & Pump Efficiency from Hydro, Inc. on Vimeo.

Read the full article on World Pumps: worldpumps.com/ancillary-products/features/seal-replacement-reveals-causes-of-vibration/

Pump Renovation Restores Balance

Vibration issues with a two-stage pump forced a major steel manufacturer to remove the pump from service. Due to incorrect weights welded on an impeller, a steel manufacturer called upon Hydro to repair and balance a two-stage pump.

Written by: Ken Babusiak (Hydro, Inc.)
Published by: World Pumps

The pump was experiencing the vibration during the spring and summer months of 2016. The steel company sent the pump to HydroAire’s Chicago, IL facility in September of that year. HydroAire was able to determine the cause of the vibration and created a solution that got the pump back in operating condition. The pump was installed and back in service by February, 2017.

The initial testing and analysis deter-mined that the impeller had large weights welded onto it. The steel company was concerned for many reasons, especially because the staff knew that using weights was not the correct way to balance an impeller. This caused the steel manufacturer to question the manner in which the pump had previously been repaired.

Weights added to impellers

Adding weights to impellers is generally not standard practice.

Where not to position the weights.

Where not to position the weights.

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