Please use this identifier to cite or link to this item:
Title: Development of an experimental diaphragm valve used for velocity profiling of such devices
Authors: Humphreys, P 
Erfort, E 
Fester, Veruscha G 
Chhiba, M 
Kotzé, R 
Philander, O 
Sam, M 
Keywords: Reverse engineering;Rapid prototyping;Ultrasonic velocity profiling;Flow characterization;Investment casting;Diaphragm valve
Issue Date: 2011
Publisher: CUT Free State
Abstract: The design, manufacture and use of diaphragm valves in the minerals industry is becoming increasingly important since this sector is restricted from using excessive amounts of water for their operations. This forces a change in the flow properties of these devices from turbulent to laminar in nature and thus necessitates the characterization of these flows for future designs. Furthermore, diaphragm valves have a short service life due to a variety of reasons that includes the abrasive nature of the flow environment. This paper describes the activities of the Adaptronics Advanced Manufacturing Technology Laboratory (AMTL) at the Cape Peninsula University of Technology in the research and development of diaphragm valves using rapid prototyping technologies. As a first step, an experimental diaphragm valve was reverse engineered and retrofitted with ultrasonic transducers used in Ultrasonic Velocity Profiling (UVP) measurements. The use of this device enables measurements of velocity profiles to gain insight into the flow structure within the valve and the increased pressure losses generated within the valve. It also showed that components fabricated using the Z-Corporation machine could withstand the working environment of diaphragm valves. Research is now conducted on ultrasonic transducer placement in the device to further enhance the velocity profiling through the device. As a second step we produced a thin-walled stainless steel diaphragm valve using rapid prototyping technology and investment casting processes. A study of the durability of this device will be conducted and certain geometric and manufacturing aspects of this valve will be discussed.
Appears in Collections:Eng - Journal articles (DHET subsidised)

Files in This Item:
File Description SizeFormat 
Humphreys_P_Erfort_E_Fester_V_Chhiba_M_Kotzé_R_Philander_O_Sam_M_Develoment of an experimental diaphragm_pdfMain article3.39 MBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Oct 21, 2018


checked on Oct 21, 2018

Google ScholarTM


This item is licensed under a Creative Commons License Creative Commons