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บทความ เกจวัดแรงดัน

Why use an OEM for centrifugal pump repairs?

Centrifugal pump OEMs claim they supply better elements, service, response and value than aftermarket service companies, however that isn’t at all times the case.
Until the early Nineteen Nineties, OEM repair centers labored completely on their merchandise, espousing the mantra, “We know our products greatest.” During the ‘90s, a decrease in new product gross sales triggered OEMs to vary their story and boast that their shops may work on any model of centrifugal pump. Suddenly, their specific product data utilized to all centrifugal pumps.
According to the net magazine, World Pumps, six of the main U.S. centrifugal pump manufacturers of the 1980s have been consolidated into one, Flowserve. Many U.S. legacy manufacturers are nonetheless manufactured by Flowserve. During the many mergers and acquisitions, the us Department of Justice compelled the sale of some brands to different producers. Products had been disassociated from their designers.
Before the great consolidation, every OEM had a chief engineer and several product designers who employed a holistic design course of, which thought-about the whole product, the interplay of its numerous parts, the user’s utility and industry specs. When a person had a significant drawback, the chief engineer was known as to sort it out. The classes learned were integrated into future designs and centrifugal pumps developed over a few years.
Industry standards, API 610 particularly, were developed by users to simplify procurement of quality equipment and to enhance pump reliability. It is a compendium of users’ experiences, which are normally expensive experiences. API 610 captures options to frequent centrifugal pump design points and best-in-class design options.
Computers loaded with amazing software program 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 people to create and distribute microfilm. In the early 1980s, we added a Fortran programmer to our employees. Today, that talent and a lot of skill units are on my desktop. เกจวัดแรงดันเบนซิน is finished with a click in MathCAD. Finite element evaluation of structures, stress vessels and even shaft keyways are built-in into our solid modelers. Hydraulic component design software program feeds computational fluid dynamics analysis applications, lowering hydraulic design threat. Rotordynamic analysis software coupled with structural analysis instruments solves — and hopefully prevents — vibration issues.
3D optical scanners and laser trackers present accurate models of advanced shapes. Conhagen can duplicate any pump case in a single afternoon and enhance it by the subsequent week. It can produce a model new case or impeller casting in 5 or 6 weeks. The improvement of patternless molds — 3D printed sand molds — was the sport changer for Conhagen, yielding high constancy, cheap price and quick supply in most any metal.
Conhagen has evolved from a restore shop to a producer that designs new centrifugal pumps or modifies current pumps for specific purposes. Unique designs provide the mandatory hydraulic performance and mechanical robustness to minimize the whole 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 distance between bearings from 37 3/4 inches to 30 5/8 inches.
Conhagen has been in business for eighty years. Its products embrace detailed engineering calculations, manufacturing drawings, installation, operation and maintenance manuals, a one-year operation guarantee and help for administration of change stories. It is big enough to be responsible, yet small enough to be responsive.