Posts Tagged ‘Cooling’

Pumps help excavate world’s longest tunnel

Monday, September 3rd, 2018 von admin

Copyright © BBT SE

The Brenner Base Tunnel through the Alps, destined to become the longest underground railway connection in the world at a planned length of 64 kilometers, is being excavated using tunnel boring machines, or TBMs made by Herrenknecht. The TBMs contain nearly every type of pump manufactured by Allweiler, a Circor brand;

  • Filter oil and cooling system pumps
  • Grout pumps for ring-gap mortar injection
  • Proportioning pumps with quench`
  • Water pumps

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Impeller improves suction characteristics in high-pressure pumps

Tuesday, July 24th, 2018 von admin

KSB experts developed a special impeller for its Movitec multistage high-pressure pumps. This new impeller significantly improves these pumps’ suction characteristics (NPSH value).

It proves its worth particularly in applications with critical inlet conditions (e.g. boiler feed applications) as well as applications in which the pump is required to take in water from low-lying tanks or at higher temperatures. Under these conditions, a pressure drop in the intake area may cause cavitation to occur in the first pump stage. This can result in excessive wear of pump parts or motor bearings as well as a reduced service life of the pump due to damaged parts and an unbalanced hydraulic system.

The new impeller is offered as an alternative to the standard product.

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