Following the correct procedures for pump and motor alignment is necessary for reliable operation.
Do Vibration Measurements Depend on Probe Placement and Probe Type?
Typically, vibration measurements are taken with a handheld accelerometer probe in four places:Pump outboard bearing housingPump inboard bearing housingMotor inboard bearing housingMotor outboard...
Vertical mixed-flow, line-shaft pumps power a $20 million flood control station.
This equipment exploits the elasticity of synthetic rubber and ensures stable bearing behavior.
Use a mathematical model that estimates vibration at the top bearing of a motor used on a vertical, wet-pit, column type pump.
Guidelines for reduced vibration and information on how a pump’s foundation and operating speed affect the vibration response
A northeast Germany refinery increased its MTBF by upgrading eight pumps.
PARSIPPANY, N.J. (April 26, 2013) – The Hydraulic Institute (HI), under the approval of the American National Standards Institute (ANSI), is seeking qualified individuals in North America to...
Q. What information is available regarding bearing minimum loads for pumps? A. All rolling element bearings require a minimum applied load. This ensures that normal elasto-hydrodynamic operation...
A shaft grounding ring and ceramic insulation can improve motor bearing life when VFDs are used.
Q. What information is available regarding NPIPA and NPIPR for rotary pumps? A. Net positive inlet pressure available (NPIPA) is the algebraic sum of the inlet and barometric pressure minus the...
Q. What are some adverse effects that can occur from mechanical processes during pumping operations? A. Numerous mechanical processes during pumping operations are not typically duplicated in...
Reduce high vibration and increase reliability with CST gear motor technology in power generation applications.
Online Monitoring Assures Reliability, Saves Money
The reliability of this pumping station had to be improved to keep up with demand and prevent service outage.Tarrant Regional Water District (TRWD) was established in 1924 as a result of Fort Worth...
Hydraulic Institute Pump FAQs November 2006
Q. I know that water hammer can do substantial damage to pumps and piping. What can be done to remove this threat? A. The following comments are taken from an HI Standard, ANSI/HI 2.3 Vertical...
Structural Resonance Problems on Vertical Pumps
Mechanical resonance is the tendency of a mechanical system to absorb more energy when the frequency of its oscillations (external excitation source) matches the system's natural frequency of...
Are Your Vertical Pumps Throwing Money Down The Drain?
Vertical pumps are a popular choice in the water industry because they provide many advantages. A vertical pump typically uses one-quarter of the floor space of a motor-driven horizontal pump. The...