Centrifugal pump OEMs claim they supply better components, service, response and worth than aftermarket service firms, but that isn’t all the time the case.
Until the early Nineteen Nineties, OEM repair facilities labored completely on their merchandise, espousing the mantra, “We know our merchandise best.” During the ‘90s, a decrease in new product sales triggered OEMs to vary their story and boast that their retailers could work on any brand of centrifugal pump. Suddenly, their specific product knowledge utilized to all centrifugal pumps.
According to the online journal, World Pumps, six of the main U.S. centrifugal pump producers of the 1980s have been consolidated into one, Flowserve. เกจวัดแรงดันน้ําไทวัสดุ 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 were disassociated from their designers.
Before the nice consolidation, each OEM had a chief engineer and a number of other product designers who employed a holistic design course of, which thought of the entire product, the interaction of its varied parts, the user’s application and trade specifications. When a consumer had a major problem, the chief engineer was referred to as to type it out. The lessons learned have been incorporated into future designs and centrifugal pumps advanced over a few years.
Industry requirements, API 610 specifically, have 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 usually costly experiences. API 610 captures solutions to frequent centrifugal pump design issues 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 group of individuals to create and distribute microfilm. In the early 1980s, we added a Fortran programmer to our staff. Today, that talent and many skill units are on my desktop. Integral calculus is completed with a click on in MathCAD. Finite factor evaluation of structures, pressure vessels and even shaft keyways are integrated into our stable modelers. Hydraulic component design software feeds computational fluid dynamics analysis packages, reducing hydraulic design danger. Rotordynamic analysis software coupled with structural evaluation tools solves — and hopefully prevents — vibration issues.
3D optical scanners and laser trackers present correct fashions of complicated shapes. Conhagen can duplicate any pump case in a single afternoon and enhance it by the following week. It can produce a model new case or impeller casting in 5 – 6 weeks. The development of patternless molds — 3D printed sand molds — was the game changer for Conhagen, yielding high constancy, cheap price and fast delivery in most any metallic.
Conhagen has evolved from a repair shop to a manufacturer that designs new centrifugal pumps or modifies existing pumps for particular applications. Unique designs present the required hydraulic efficiency and mechanical robustness to attenuate the total cost of possession. Two examples of case replacements are included in this editorial — a 4 stage, axial split, boiler feed pump’s carbon metal case was replaced 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 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. Its merchandise embrace detailed engineering calculations, manufacturing drawings, installation, operation and upkeep manuals, a one-year operation warranty and support for management of change stories. It is large enough to be responsible, but small enough to be responsive.
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