Cheng Fluid Systems, Inc.
United States
ph: +1(650) 559-9292
sales
Problem: General Electric’s gas turbines were shutting down prematurely because their fuel control valves had stability problems
Solution: 2 inch diameter stainless steel CRV®’s were installed on the last elbows before the control valves
Result: Once the CRV®’s were installed, the control valves became stable which eliminated costly shutdowns and warranty problems.
Problem: Chevron’s expensive molybdenum elbows used to wear through because the catalytic particles would blow out the top of their catalytic cracking unit and erode the elbow. This elbow had to be replaced every three to four months causing an unscheduled refinery shutdown.
Solution: Chevron installed a surface hardened 4 inch diameter CRV® at the inlet of the elbow
Result: The CRV® eliminated the erosion and the unscheduled down time was eliminated. The estimated savings is over $1 million dollars a year.
Problem: Poorly performing elbows caused a loss of efficiency and quality at one of GM’s paint facilities.
Solution: GM installed 12 inch, 14 inch, and 20 inch diameter CRV®’s into their paint piping system.
Result: The pumping and spraying system became more efficient and the overall efficiency of the facility.
Problem: Rohm and Haas had numerous pumps in their refinery that were cavitating and running in-efficiently, causing premature shutdowns and repair problems and increased production costs.
Solution: 4-inch, 8-inch, 10-inch, and 18-inch diameter CRV®’s were installed on the inlet elbows of 18 different pumps.
Result: After the first CRV®’s were installed, Rohm and Haas decided to place CRV®’s on all of their pumps, eliminating unscheduled down times while increasing production revenues.
Problem: Philadelphia Gas Works couldn’t properly measure their gas delivery because they could not install new gas turbine meters as they did not have the required minimum straight length of pipe from the elbow to the inlet of the meter.
Solution: They installed 12 inch diameter CRV®’s before the elbows to calm the flow down to enable a measurement. Estimated Savings: After they installed the CRV®’s Philadelphia Gas Works discovered that they were delivering 20% more gas than their older meters were measuring.
Result: The CRV®’s enabled them to measure more accurately and properly charge for the 20% they were previously giving away.
Problem: Imperial Oil had a pump that was producing and unacceptable amount of vibration which created leaks in the pump’s shafts and bearings and released dangerous hydrocarbons. This situation caused a safety hazard in the refinery.
Solution: a 10 inch diameter CRV® was installed before the last elbow on the pumps’ suction line.
Result: The CRV® brought the vibration problem well below their plants acceptable vibration limits, eliminated the safety hazard and the need of a costly pump suction line redesign.
Problem: Erratic check valve opening and closing downstream of a vertical pump caused the check valves to leak which the shut down of Kansas City Power & Light’s (KCP&L) power plant.
Solution: KCP&L installed a specially designed 12 inch diameter hollow core CRV in the discharge end of the pump.
Result: The installed CRV® eliminated the flow turbulence so the pump and check valve could operate smoothly and efficiently. This eliminated costly repairs and unscheduled downtimes.
Problem: Texas Utilities Nuclear’s pumps were leaking radioactive water because they were cavitating and vibrating so much that they wore out their bearings and seals prematurely.
Solution: 10 in and 12 inch diameter “N-Stamp” CRV®’s were installed on the last elbows before the pumps’ suction inlets.
Result: Texas Utilities Nuclear saved millions of dollars by eliminating the cavitation and vibration caused by the elbow and the need for the very expensive clean up of radioactive water.
Problem: Dow Chemical could not commission a new plant because the plant’s piping system wouldn’t allow the main pump to achieve the plant’s design capacity.
Solution: A specially designed 20 inch diameter CRV® vane set was welded into their piping system before the pump’s suction elbow.
Result: The CRV® vane set allowed the pump to operate at its design capacity and the multi-million dollar plant was commissioned on time.
Problem: DuPont installed a magnetically coupled pump in order to meet environmental regulation requirements. The pump failed within 2 hours of startup due to turbulence generated by the inlet elbow. The lost production was valued at approximately $1 million per day.
Solution: A 12 inch diameter CRV® was installed on the elbow on the suction side of the pump.
Result: Once the CRV® was installed, the turbulence in the pump was eliminated, the pump worked properly and the refinery was back online.
Problem: Postler & Jaeckle Engineering had a cavitating pump problem in a water treatment facility which was causing warranty problems.
Solution: A 16 inch diameter CRV® designed to AWWA standards was installed before the last elbow on the suction end of the pump.
Result: The CRV® eliminated the pump’s cavitation problem and increased the pump’s efficiency. The installation reduced the pump’s power consumption, increased its throughput, and eliminated the warranty problem.
Solution: Daishowa installed a 12 inch diameter CRV® on the last elbow before the pumps suction inlet.
Result: The CRV® eliminated the cavitation and vibration so the pump sounded like a properly operating pump. As a result, the installation eliminated the shutdowns and repairs.
Problem: Pumps on Chevron’s Pipeline were leaking because they were cavitating and vibrating.
Solution: 10 inch and 12 inch diameter CRV®s were installed on the suction elbows of each pump.
Estimated Savings: The CRV®s eliminated the cavitation, vibration, and leakage which saved Chevron Pipeline thousands of dollars. The pumps also operated more efficiently which saved Chevron Pipeline additional money.
Problem: Complex pipe laying configuration- two elbows in perpindicular planes. General rule requires installing an orifice with 15-40 pipe diameters in length, upstream of the meter. At Bechtel Savannah River, Inc.`s Defense Waste Processing Facility (DWP) the two gas piping systems provided a total straight pipe of just 4 and 8 diameters.
Solution: A complex gas piping system at Bechtel Savannah River, Inc.`s Defense Waste Processing Facility (DWPF; Aiken, S.C.) contains several 90-deg, long-radius elbows.
Estimated Savings: With the new Cheng elbow vanes in place, the orifice flowmeter has performed to design capacity. And, to date, the system has shown no random fluctuations and no lack of repeatability.
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Cheng Fluid Systems, Inc.
United States
ph: +1(650) 559-9292
sales