Carbon fiber/PEEK take hydraulic pump to new depths
Design Results:
Carbon composite components replace traditional steel barrels to reduce weight, making large, high-capacity intensifier pumps viable for transport to offshore applications. Material selection and design for manufacture reduce deflection and residual stress to maintain critical seal tolerance under high pressures. Innovative approach to integration of metal end fittings on composite cylinders produces gradual transition in stiffness between materials.Placing and maintaining machinery on the ocean floor is a challenge at any depth, but the deeper the placement, the more hostile the environment. In ultradeep water, equipment is not only immersed in corrosive saltwater, but it also must endure low temperatures and withstand enormous water pressure. One new deepwater solution, a large-capacity hydraulic intensifier pump from Houston, Texas-based Cameron International Corp., is facing these challenges with a proprietary new pump design that takes advantage of the water pressure and involves a switch from traditional metals to a carbon fiber composite for critical components.
“It’s a radical design response,” says Cameron’s principal research engineer, Don Coonrod. “As we go into deeper and deeper waters, new innovations are required.”
Cameron supplies flow equipment and systems to the worldwide oil, gas and process industries. Its large-capacity carbon composite intensifier pump is able to operate at depths to 15,000 ft/4,752m — the result of a three-year collaborative effort between Cameron and composites equipment and structures manufacturer Automated Dynamics (Schenectady, N.Y.).
“By using a high-performance carbon fiber and PEEK [polyetheretherketone] matrix composite in conjunction with precise fiber placement technologies, we minimize water absorption, marine bio-fouling and weight while optimizing the material construction to meet the demanding functional and form-fit requirements,” says James Harty, VP sales and marketing at Automated Dynamics.
A new approach to hydraulic intensification“In the initial design phase, we had to ask ourselves, How do we design a part that faces tremendous pressures — both external and internal — and ensure that the cylinders don’t collapse or, when the pump actuates, it doesn’t deform beyond limits and break the seal or jam?” explains Dr. Ronald B. Bucinell, P.E., of the Department of Mechanical Engineering at Union College (Schenectady, N.Y.), who conducted finite element analysis (FEA) on the component. The solution was complex and affected all aspects of pump design and manufacture. Unlike traditional rod-and-piston systems, this unit incorporates three major composite components — the outer housing, the inner housing and the piston — as three concentric cylinders.
Heat Pumps High Pressure Switch - News
Automated Dynamics' proprietary fiber placement process uses unidirectional prepreg with high heat and pressure to consolidate the structure in situ with no postprocessing. “This technology allows us to orient the reinforcing fiber from 0° [axial] to
20.2 L from hose/pump flush). Wautersia bacteria are typical water-borne microorganisms that have been seen previously in ISS water sources. These isolates pose no threat to human health.] Volkov conducted the routine daily servicing of the SOZh system
[Main objective of PK-3 is to study wave propagation and dispersion ratio in a dust plasma, ie, fine particles charged and excited by HF (high frequency) radio power inside the evacuated work chamber, at a specified power of HF discharge, pressure,
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Goodman Heat Pump Problems – What we should know about
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