Why use an OEM for centrifugal pump repairs?

Centrifugal pump OEMs declare they supply better components, service, response and value than aftermarket service firms, however that isn’t always the case.
Until the early 1990s, OEM restore centers worked exclusively on their products, espousing the mantra, “We know our merchandise best.” During the ‘90s, a decrease in new product sales caused OEMs to change their story and boast that their retailers could work on any brand of centrifugal pump. Suddenly, their particular product knowledge utilized to all centrifugal pumps.
According to the web journal, World Pumps, six of the most important U.S. centrifugal pump manufacturers of the 1980s have been consolidated into one, Flowserve. Many U.S. legacy manufacturers are nonetheless manufactured by Flowserve. During the many mergers and acquisitions, the U.S. Department of Justice compelled the sale of some brands to different producers. Products were disassociated from their designers.
Before the nice consolidation, every OEM had a chief engineer and several product designers who employed a holistic design course of, which considered the whole product, the interaction of its various components, the user’s application and business specifications. When a user had a big drawback, the chief engineer was called to type it out. The classes realized were included into future designs and centrifugal pumps developed over a few years.
Industry requirements, API 610 in particular, had been developed by users to simplify procurement of quality gear and to improve pump reliability. It is a compendium of users’ experiences, that are normally costly experiences. API 610 captures options to frequent centrifugal pump design points and best-in-class design features.
Computers loaded with amazing software program have democratized engineering. When I was a design engineering supervisor at Pacific Pumps, I had physicists, mathematicians, metallurgists, engineers, drafters, doc managers and a big group of people to create and distribute microfilm. In the early 1980s, we added a Fortran programmer to our workers. Today, that talent and tons of skill units are on my desktop. Integral calculus is completed with a click in MathCAD. Finite component evaluation of buildings, pressure vessels and even shaft keyways are built-in into our strong modelers. Hydraulic element design software feeds computational fluid dynamics evaluation packages, reducing hydraulic design danger. Rotordynamic analysis software coupled with structural analysis tools solves — and hopefully prevents — vibration points.
3D optical scanners and laser trackers provide accurate fashions of complex shapes. Conhagen can duplicate any pump case in a single afternoon and improve it by the following week. It can produce a new case or impeller casting in 5 – 6 weeks. The development of patternless molds — 3D printed sand molds — was the sport changer for Conhagen, yielding excessive fidelity, cheap cost and fast supply in most any steel.
Conhagen has developed from a repair store to a manufacturer that designs new centrifugal pumps or modifies present pumps for specific purposes. Unique designs provide the necessary hydraulic efficiency and mechanical robustness to attenuate the whole cost of possession. All-inclusive of case replacements are included in this editorial — a four stage, axial split, boiler feed pump’s carbon steel case was replaced with a CA6NM casting. The second example is a single stage between a bearings pump that suffered rotor dynamics points. Conhagen designed and manufactured a model new case, shortening the distance between bearings from 37 3/4 inches to 30 5/8 inches.
Conhagen has been in enterprise for 80 years. Its products include detailed engineering calculations, manufacturing drawings, set up, operation and maintenance manuals, a one-year operation warranty and support for management of change reviews. It is sufficiently big to be accountable, yet sufficiently small to be responsive.
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