Centrifugal pump OEMs declare they provide higher elements, service, response and value than aftermarket service corporations, however that isn’t always the case.
Until the early Nineteen Nineties, OEM restore centers worked solely on their products, espousing the mantra, “We know our merchandise best.” During the ‘90s, a decrease in new product sales caused OEMs to alter 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 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 other producers. Products had been disassociated from their designers.
Before the good consolidation, each OEM had a chief engineer and a variety of other product designers who employed a holistic design course of, which thought of the whole product, the interaction of its various components, the user’s software and trade specs. When a user had a major drawback, the chief engineer was referred to as to sort it out. The classes learned were incorporated into future designs and centrifugal pumps evolved over many years.
Industry requirements, API 610 specifically, were developed by customers to simplify procurement of quality tools and to improve pump reliability. It is a compendium of users’ experiences, that are often costly 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 large staff of individuals to create and distribute microfilm. In the early Eighties, we added a Fortran programmer to our staff. Today, that expertise and many skill sets are on my desktop. Integral calculus is completed with a click in MathCAD. Finite component evaluation of buildings, stress vessels and even shaft keyways are integrated into our solid modelers. Hydraulic element design software program feeds computational fluid dynamics analysis applications, reducing hydraulic design risk. Rotordynamic evaluation software program coupled with structural analysis 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 next week. It can produce a new case or impeller casting in five or six weeks. The improvement of patternless molds — 3D printed sand molds — was the game changer for Conhagen, yielding high fidelity, reasonable cost and quick supply in most any metallic.
Conhagen has developed from a repair shop to a manufacturer that designs new centrifugal pumps or modifies present pumps for specific functions. Unique designs provide the mandatory hydraulic performance and mechanical robustness to reduce the whole cost of possession. Two examples of case replacements are included on this editorial — a 4 stage, axial break up, boiler feed pump’s carbon metal case was changed with a CA6NM casting. The second instance 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 enterprise for 80 years. เกจวัดแรง detailed engineering calculations, manufacturing drawings, set up, operation and upkeep manuals, a one-year operation warranty and assist for administration of change reports. It is large enough to be accountable, but sufficiently small to be responsive.
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