Effect of clearance gap on hydraulic efficiency of centrifugal pump

This paper presents a result of formula studies of the effect of clearance gap on the hydraulic efficiency of centrifugal pump. As the pumps operate its duty over time, there will be chance for the wear ring to wear and as the part wears, the gap will be bigger and the pump will lose its efficiency....

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Bibliographic Details
Main Authors: Adistiya, Suryana, Wijayanta, Agung Tri
Format: Conference Proceeding
Language:English
Subjects:
Centrifugal pumps
Efficiency
Hydraulics
Impellers
Repair & maintenance
Standardization
Wear
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Summary:This paper presents a result of formula studies of the effect of clearance gap on the hydraulic efficiency of centrifugal pump. As the pumps operate its duty over time, there will be chance for the wear ring to wear and as the part wears, the gap will be bigger and the pump will lose its efficiency. It is because, when the pump operates, the vibration from the rod will make the rotation of impeller unstable and it could scrape the inner surface of the clearance and it could change the hydraulic efficiency of the centrifugal pump. In this paper, we investigated the effect of the wear ring clearance by calculating the initial clearance and change the clearance gap to achieve the bigger efficiency. The results show that the initial clearance of the pump is 0.2025 in with hydraulic efficiency 28%. By decreasing the clearance gap into 0.20 in and 0.19 in, the hydraulic efficiencies would be 29% and 36%. It means the smaller the clearance of the pump, the hydraulic efficiency will be decreasing as well. The standardization of clearance value is considered to API 610.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5098228