Centrifugal Pump Lab Analysis

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Vibration Analysis of a Centrifugal Pump
A.Naveen Varma1, K. Bala Bhaskar1, B. Sai Kumar1, G.Giridhar1, Vamsi Raja2, P.Phani Prasanthi3
1Research Scholars
1Department of Mechanical Engineering, P.V.S.I.T. Kanuru (A.P), India-520007
2Associate Manager, Kirloskar Brothers Limited, Pune, India.
3Assistant Professor
3Department of Mechanical Engineering, P.V.S.I.T. Kanuru (A.P), India-520007.
ABSTRACT:

Centrifugal pumps are among the more versatile and widely used products of rotating mechanical equipment found today. Pumps are essential in almost all utilities services and power generation plants. The basic principal of operation for a centrifugal pump is that a shaft is mounted on a rotating impeller inside a housing (volute) imparts energy to the fluid being moved. Centrifugal pumps utilize centrifugal force (thus their name) to increase the velocity of the fluid as it passes through the impeller and exits at the tip or periphery of the impeller. This action converts mechanical energy (shaft torque) into kinetic energy by acceleration of the fluid to a higher velocity and pressure (potential energy).
It is necessary to be concerned about the vibrations because it has a major affect on the performance of
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Simmons [3] opened that vibration from their sources origin may be small but excite the resonant frequencies of the rotating parts such as the rotor shaft and set-up considerable extra dynamic load on bearings. The cause and effect reinforce each other and the machine progresses towards ultimate break down. As per Gyarmathy [4] there are generally two situations in which vibration measurements are taken. One of them is surveillance mode to check the health of machinery on routine basis. The second situation is during an analysis process where the ultimate goal is to tag the problem. In the later case, vibration measurements are taken to understand the cause, so that an appropriate fix can be

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