Centrifugal pump OEMs claim they provide higher parts, service, response and value than aftermarket service companies, however that isn’t always the case.
Until the early Nineties, OEM repair facilities labored solely on their merchandise, espousing the mantra, “We know our products greatest.” During the ‘90s, a decrease in new product gross sales triggered OEMs to change their story and boast that their retailers may work on any brand of centrifugal pump. Suddenly, their specific product knowledge applied to all centrifugal pumps.
According to the net journal, World Pumps, six of the major U.S. centrifugal pump producers of the 1980s have been consolidated into one, Flowserve. Many U.S. legacy brands are still manufactured by Flowserve. During the many mergers and acquisitions, the united states Department of Justice pressured the sale of some manufacturers to different producers. Products have been disassociated from their designers.
Before the nice consolidation, each OEM had a chief engineer and several product designers who employed a holistic design process, which thought of the entire product, the interplay of its numerous parts, the user’s application and business specs. When a user had a significant downside, the chief engineer was called to kind it out. เกจวัดแรงดัน10bar discovered were incorporated into future designs and centrifugal pumps developed over many years.
Industry standards, API 610 specifically, were developed by customers to simplify procurement of high quality gear and to enhance pump reliability. It is a compendium of users’ experiences, which are usually expensive experiences. API 610 captures solutions to widespread centrifugal pump design issues and best-in-class design options.
Computers loaded with amazing software have democratized engineering. When I was a design engineering manager at Pacific Pumps, I had physicists, mathematicians, metallurgists, engineers, drafters, doc managers and a big team of individuals to create and distribute microfilm. In the early 1980s, we added a Fortran programmer to our workers. Today, that talent and many talent units are on my desktop. Integral calculus is finished with a click in MathCAD. Finite component evaluation of buildings, pressure vessels and even shaft keyways are integrated into our solid modelers. Hydraulic component design software feeds computational fluid dynamics evaluation applications, lowering hydraulic design risk. Rotordynamic analysis software program coupled with structural evaluation instruments 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 enhance it by the following week. It can produce a brand new case or impeller casting in five or six weeks. The improvement of patternless molds — 3D printed sand molds — was the sport changer for Conhagen, yielding excessive constancy, affordable cost and fast supply in most any metallic.
Conhagen has developed from a restore shop to a manufacturer that designs new centrifugal pumps or modifies current pumps for specific purposes. Unique designs provide the necessary hydraulic efficiency and mechanical robustness to attenuate the total price of ownership. Two examples of case replacements are included on this editorial — a four stage, axial break up, boiler feed pump’s carbon metal case was replaced with a CA6NM casting. The second example is a single stage between a bearings pump that suffered rotor dynamics issues. Conhagen designed and manufactured a new case, shortening the space between bearings from 37 3/4 inches to 30 5/8 inches.
Conhagen has been in business for eighty years. Its merchandise embody detailed engineering calculations, manufacturing drawings, installation, operation and maintenance manuals, a one-year operation warranty and assist for management of change reviews. It is big enough to be responsible, but small enough to be responsive.
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