Why use an OEM for centrifugal pump repairs?

Centrifugal pump OEMs declare they supply higher parts, service, response and worth than aftermarket service corporations, but that isn’t at all times the case.
Until the early Nineteen Nineties, OEM repair centers worked completely on their products, espousing the mantra, “We know our merchandise finest.” During the ‘90s, a decrease in new product gross sales caused OEMs to alter their story and boast that their retailers might work on any model of centrifugal pump. Suddenly, their specific product data utilized to all centrifugal pumps.
According to the net journal, World Pumps, six of the main U.S. centrifugal pump manufacturers of the Eighties have been consolidated into one, Flowserve. Many U.S. legacy manufacturers are still manufactured by Flowserve. During the many mergers and acquisitions, the U.S. Department of Justice pressured the sale of some brands to different producers. Products were disassociated from their designers.
Before the great consolidation, every OEM had a chief engineer and a number of other product designers who employed a holistic design process, which considered the whole product, the interplay of its various parts, the user’s software and trade specifications. When a person had a big drawback, the chief engineer was called to sort it out. The classes learned had been included into future designs and centrifugal pumps evolved over many years.
Industry standards, API 610 specifically, had been developed by users to simplify procurement of high quality tools 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 options.
Computers loaded with superb software program have democratized engineering. When I was a design engineering manager at Pacific Pumps, I had physicists, mathematicians, metallurgists, engineers, drafters, document managers and a big team of individuals to create and distribute microfilm. In the early Eighties, we added a Fortran programmer to our employees. Today, that talent and many ability sets are on my desktop. Integral calculus is completed with a click in MathCAD. Finite component analysis of structures, stress vessels and even shaft keyways are integrated into our solid modelers. Hydraulic element design software feeds computational fluid dynamics evaluation applications, lowering hydraulic design danger. Rotordynamic analysis software program coupled with structural analysis instruments solves — and hopefully prevents — vibration points.
3D optical scanners and laser trackers present correct models of complex shapes. Conhagen can duplicate any pump case in one afternoon and improve it by the next week. It can produce a new case or impeller casting in 5 – 6 weeks. The improvement of patternless molds — 3D printed sand molds — was the game changer for Conhagen, yielding high constancy, reasonable cost and quick delivery in most any steel.
เกจวัดแก๊สlpg has evolved from a restore shop to a manufacturer that designs new centrifugal pumps or modifies present pumps for specific functions. Unique designs provide the required hydraulic performance and mechanical robustness to reduce the whole value of possession. Two examples of case replacements are included in this editorial — a four stage, axial split, boiler feed pump’s carbon metal case was changed 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 brand new case, shortening the gap between bearings from 37 3/4 inches to 30 5/8 inches.
Conhagen has been in business for 80 years. Its merchandise embrace detailed engineering calculations, manufacturing drawings, set up, operation and maintenance manuals, a one-year operation warranty and support for management of change reports. It is large enough to be accountable, but small enough to be responsive.
Share

Scroll to Top