The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform
W Horn - One of the best experts on this subject based on the ideXlab platform.
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know your diaphragm Pump Internals
Chemical Engineering, 1993Co-Authors: Gerhard Vetter, S Eberhard, J Jarosch, W HornAbstract:The diaphragm Pump, a type of reciprocating, positive-displacement unit whose design can be traced back over a century, is enjoying a renascence today. Since the process fluid does not come in contact with the mechanical shafts and seals of the Pump, the unit is said to be inherently leak-free. This characteristic has obvious value when toxic or other environmentally risky fluid are being conveyed. The lack of contact between the Pump head and the process fluid also has value for situations where corrosive, abrasive, poorly lubricating, or sterile fluids are being handled. Moreover, diaphragm Pumps work well with shear-sensitive fluids or those with high vapor pressures. In addition, these Pumps are well suited to high-pressure applications. Diaphragms themselves are changing to longer-lasting materials and less stressful clamping and deflection methods. Better energy efficiency, less vibration and less pulsation are additional features of modern designs.
Gerhard Vetter - One of the best experts on this subject based on the ideXlab platform.
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know your diaphragm Pump Internals
Chemical Engineering, 1993Co-Authors: Gerhard Vetter, S Eberhard, J Jarosch, W HornAbstract:The diaphragm Pump, a type of reciprocating, positive-displacement unit whose design can be traced back over a century, is enjoying a renascence today. Since the process fluid does not come in contact with the mechanical shafts and seals of the Pump, the unit is said to be inherently leak-free. This characteristic has obvious value when toxic or other environmentally risky fluid are being conveyed. The lack of contact between the Pump head and the process fluid also has value for situations where corrosive, abrasive, poorly lubricating, or sterile fluids are being handled. Moreover, diaphragm Pumps work well with shear-sensitive fluids or those with high vapor pressures. In addition, these Pumps are well suited to high-pressure applications. Diaphragms themselves are changing to longer-lasting materials and less stressful clamping and deflection methods. Better energy efficiency, less vibration and less pulsation are additional features of modern designs.
S Eberhard - One of the best experts on this subject based on the ideXlab platform.
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know your diaphragm Pump Internals
Chemical Engineering, 1993Co-Authors: Gerhard Vetter, S Eberhard, J Jarosch, W HornAbstract:The diaphragm Pump, a type of reciprocating, positive-displacement unit whose design can be traced back over a century, is enjoying a renascence today. Since the process fluid does not come in contact with the mechanical shafts and seals of the Pump, the unit is said to be inherently leak-free. This characteristic has obvious value when toxic or other environmentally risky fluid are being conveyed. The lack of contact between the Pump head and the process fluid also has value for situations where corrosive, abrasive, poorly lubricating, or sterile fluids are being handled. Moreover, diaphragm Pumps work well with shear-sensitive fluids or those with high vapor pressures. In addition, these Pumps are well suited to high-pressure applications. Diaphragms themselves are changing to longer-lasting materials and less stressful clamping and deflection methods. Better energy efficiency, less vibration and less pulsation are additional features of modern designs.
J Jarosch - One of the best experts on this subject based on the ideXlab platform.
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know your diaphragm Pump Internals
Chemical Engineering, 1993Co-Authors: Gerhard Vetter, S Eberhard, J Jarosch, W HornAbstract:The diaphragm Pump, a type of reciprocating, positive-displacement unit whose design can be traced back over a century, is enjoying a renascence today. Since the process fluid does not come in contact with the mechanical shafts and seals of the Pump, the unit is said to be inherently leak-free. This characteristic has obvious value when toxic or other environmentally risky fluid are being conveyed. The lack of contact between the Pump head and the process fluid also has value for situations where corrosive, abrasive, poorly lubricating, or sterile fluids are being handled. Moreover, diaphragm Pumps work well with shear-sensitive fluids or those with high vapor pressures. In addition, these Pumps are well suited to high-pressure applications. Diaphragms themselves are changing to longer-lasting materials and less stressful clamping and deflection methods. Better energy efficiency, less vibration and less pulsation are additional features of modern designs.
P. Murray - One of the best experts on this subject based on the ideXlab platform.
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multistage Pumps, residual stresses, shrink fit assemblies, stress-corrosion cracking, wear rings Stress-Corrosion Cracking of Reactor Feed Pump Wear Rings
2020Co-Authors: A. N. Kumar, P. MurrayAbstract:Stress-corrosion cracking (SCC) is observed in machine components when an optimal combination of stress levels and environmental conditions is present in susceptible material. An interesting case history of intergranular SCC failure is presented in this paper. This failure occurred in wear rings that were shrinkfitted on the impellers of a multistage horizontal feed Pump during the project procurement phase. After manufacture and assembly, two Pumps were performance-tested in the supplier’s test loop for a combined total of approximately 600 h. The test duration lasted for approximately three months. During this duration, the two Pump Internals were not absolutely dry and were exposed to an indoor environment in the supplier’s test plant. After the completion of the tests, the Pump Internals were inspected, cleaned, dried, and packaged before air freighting to the reactor site. The Pumps were in storage at the site for approximately two months. When the Pumps were opened for inspection, two wear rings on each of the Pumps were cracked. This paper summarizes the results of the studies to evaluate the root cause of the wear ring failures and the corrective actions implemented to avoid similar failures.
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Stress-corrosion cracking of reactor feed Pump wear rings
Journal of Failure Analysis and Prevention, 2006Co-Authors: A. N. Kumar, P. MurrayAbstract:Stress-corrosion cracking (SCC) is observed in machine components when an optimal combination of stress levels and environmental conditions is present in susceptible material. An interesting case history of intergranular SCC failure is presented in this paper. This failure occurred in wear rings that were shrink-fitted on the impellers of a multistage horizontal feed Pump during the project procurement phase. After manufacture and assembly, two Pumps were performance-tested in the supplier's test loop for a combined total of approximately 600 h. The test duration lasted for approximately three months. During this duration, the two Pump Internals were not absolutely dry and were exposed to an indoor environment in the supplier's test plant. After the completion of the tests, the Pump Internals were inspected, cleaned, dried, and packaged before air freighting to the reactor site. The Pumps were in storage at the site for approximately two months. When the Pumps were opened for inspection, two wear rings on each of the Pumps were cracked. This paper summarizes the results of the studies to evaluate the root cause of the wear ring failures and the corrective actions implemented to avoid similar failures.
