An Engineered Battle Against Cavitation

Impeller Cavitation

With inlet backflow recirculation present, the impellers were experiencing horrific vane breakage and cavitation.

A power station’s cooling water pumps were constantly being repaired, costing the plant millions of dollars in costs and service time due to the severe operational disruption and logistics required to remove and transport such large equipment. Previous attempts made by the station to improve the reliability of the impellers through upgraded material selections had little impact on reliability.

It was clear that something had to change as the station’s pump reliability was now a major financial focus. The many vane cracks, cavitation and broken vane sections that were weld-repaired during inspections throughout the pumps’ life cycles prompted the station to investigate a more permanent solution to the issue.

During the last repair, the reliability engineer inspected the impellers and found the cavitation was similar to those reported during prior repairs. An engineering repair company that specializes in fluid dynamics was asked to investigate the root cause of the continuing pump issues. The team conducted an investigation on the system layout and operation parameters.

The results of the forensic analysis showed that the impeller blades were suffering cavitation to the low-pressure side of the vanes. Additionally, the cavitation and cracked vanes toward the eye also indicated that the sizing of the inlet and its associated blade angles may be active factors in the repeated failures.

Read the full article at www.pumpsandsystems.com

HydroTex Deer Park Service Center Relocating to La Porte, TX

The new 33,000 square building in La Porte, Texas.

HydroTex, a subsidiary of Hydro, Inc., announces the move of its Deer Park operation to a new 33,000 square foot building in La Porte, TX.

The new service center will offer expanded capacity for analysis, engineering, rebuilding and repair services for pump systems and rotating equipment as well as climate controlled storage of pumps and parts.

Located near the busy Houston Ship Channel, the new facility is ideally situated to serve the needs of surrounding industries using pumping equipment of any capacity. To learn more about the new facility or to schedule a shop visit, please contact HydroTex.

 

Source: pumpsandsystems.com

Middle East Power Plant Demonstrates the Advantages of Pump Health Audits

With the help of a field evaluation, plant managers avoided unnecessary pump repairs.

Written by: Gary Dyson & Thomas Arakal
Publisher: Pumps & Systems / December 2016

 

A decade-old, 1,000-megawatt (MW) combined cycle power plant in the Middle East called an equipment repair and engineering company to conduct a pump health audit. Given the age of the plant and the fact that none of the pumps had undergone a major overhaul, plant personnel asked the engineering firm to determine which pumps should be pulled for repair at the next scheduled outage. The equipment consisted of six condensate extraction pumps and six boiler feed pumps.

Leaving the production process undisturbed, the field pump health evaluation team conducted a non-invasive pump study. Flow, pressure, vibration, power consumption, temperature and other data were collected for all the pumps in various regimes of operation. A team of engineers analyzed and compared the results of the measurements to the original design parameters. The study’s conclusions and engineering recommendations were published.

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Hydro Inc. is Carving out their Niche in the Global Pump Aftermarket

Written by: Sarah Schroer
Publisher: Pump Engineer / June 2015

 

Pump Engineer spoke with George Harris, Hydro Inc.’s CEO and Founder, to learn more about what sets them apart from other pump aftermarket services. “Hydro has developed a unique niche where we have the capabilities, the engineering support, and the lab for testing purposes to provide comprehensive support for customers, while providing prompt capable service on a global basis,” says Harris. Hydro Inc. makes customers the cornerstone of their business. “Everything that we do is focused on the needs of the customer,” explains Brian Scorer who is the Executive VP at Hydro Inc. “We make sure we are entrepreneurial, fl exible, agile, and very quick in the way that we go about our business. We provide world class quality, world class delivery, and we wish to be competitive on cost. The foundation for what we do is built upon engineering excellence and technology. We also have some of the world’s best pump engineers.”

 

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Werner Barnard and Dr. Gary Dyson of Hydro, Inc.

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