Why use an OEM for centrifugal pump repairs?

Centrifugal pump OEMs claim they supply better parts, service, response and value than aftermarket service corporations, but that isn’t always the case.
Until the early 1990s, OEM restore centers labored completely on their merchandise, espousing the mantra, “We know our products best.” During the ‘90s, a decrease in new product sales caused OEMs to alter their story and boast that their outlets might work on any model of centrifugal pump. Suddenly, เครื่องมือที่ใช้วัดความดันโลหิต applied to all centrifugal pumps.
According to the web magazine, World Pumps, six of the most important U.S. centrifugal pump producers of the Eighties have been consolidated into one, Flowserve. Many U.S. legacy brands are nonetheless manufactured by Flowserve. During the numerous mergers and acquisitions, the us Department of Justice compelled the sale of some manufacturers to different manufacturers. Products were disassociated from their designers.
Before the nice consolidation, every OEM had a chief engineer and various other product designers who employed a holistic design course of, which considered the entire product, the interplay of its numerous elements, the user’s application and business specs. When a consumer had a major downside, the chief engineer was referred to as to type it out. The lessons discovered were integrated into future designs and centrifugal pumps developed over a few years.
Industry standards, API 610 in particular, had been developed by customers to simplify procurement of high quality equipment and to improve pump reliability. It is a compendium of users’ experiences, that are usually expensive experiences. API 610 captures options to common centrifugal pump design points and best-in-class design features.
Computers loaded with superb software 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 staff. Today, that talent and lots of skill units are on my desktop. Integral calculus is done with a click in MathCAD. Finite element analysis of constructions, strain vessels and even shaft keyways are integrated into our strong modelers. Hydraulic part design software feeds computational fluid dynamics analysis programs, lowering hydraulic design threat. Rotordynamic analysis software program coupled with structural analysis instruments solves — and hopefully prevents — vibration issues.
3D optical scanners and laser trackers provide accurate models of complicated shapes. Conhagen can duplicate any pump case in a single afternoon and enhance 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 high fidelity, affordable cost and fast supply in most any metallic.
Conhagen has evolved from a repair store to a producer that designs new centrifugal pumps or modifies existing pumps for particular functions. Unique designs provide the required hydraulic efficiency and mechanical robustness to attenuate the total value of possession. Two examples of case replacements are included on this editorial — a 4 stage, axial break up, 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 new case, shortening the distance between bearings from 37 3/4 inches to 30 5/8 inches.
Conhagen has been in business for 80 years. Its merchandise embody detailed engineering calculations, manufacturing drawings, installation, operation and maintenance manuals, a one-year operation guarantee and help for management of change reports. It is sufficiently big to be accountable, yet small enough to be responsive.
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