The effect of balance holes to centrifugal pump performance

Babayigit, Osman; Özgören, Muammer; Aksoy, Muharrem Hilmi; Kocaaslan, Osman

doi:10.1063/1.4992157

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…Considering the cost and cycle of experiments, some researchers employ numerical simulation techniques for forecasting axial thrust and flow properties [101,102]. Babayigit et al [103] utilized CFD to assess the impact of the balance hole on the hydraulic efficiency of multistage pumps. In their study, Zhu et al [104] performed numerical simulations and conducted experiments to investigate the axial force generated by the asymmetric blade structure of the lifting pump, based on the consideration of balancing plate and balancing hole.…”

Section: Design Optimization Of Lift Pump Structurementioning

confidence: 99%

A Review on Underwater Collection and Transportation Equipment of Polymetallic Nodules in Deep-Sea Mining

Zhang,

Zuo,

Wei

et al. 2024

JMSE

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In response to the anticipated scarcity of terrestrial land resources in the coming years, the acquisition of marine mineral resources is imperative. This paper mainly summarizes the development of underwater collection and transportation equipment of polymetallic nodules in deep-sea mining. Firstly, the collection equipment is reviewed. The deep-sea mining vehicle (DSMV), as the key equipment of the collection equipment, mainly includes the collecting device and the walking device. The micro and macro properties of sediments have a great influence on the collection efficiency of mining vehicles. For the collecting device, the optimization of the jet head structure and the solid–liquid two-phase flow transport of the hose are discussed. The structure of the walking device restricts mining efficiency. The optimization of the geometric structure is studied, and the geometric passability and lightweight design of the walking device are discussed. Secondly, the core of transportation equipment is the lifting device composed of a riser and lifting pump. In order to explore the key factors affecting mineral transport, the lifting device is summarized, and the design optimization of the lifting pump and the factors affecting the stability of the riser are discussed. Then, the relationship between each device is discussed, and the overall coupling of the device is summarized. Finally, the existing problems and future research focus are summarized.

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Section: Design Optimization Of Lift Pump Structurementioning

confidence: 99%

A Review on Underwater Collection and Transportation Equipment of Polymetallic Nodules in Deep-Sea Mining

Zhang,

Zuo,

Wei

et al. 2024

JMSE

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“…The axial thrust balance improved when the ratio of the area between the reflux balancing hole and the sealing ring was higher than six. Babayigit et al [4] investigated differences in the performance of a two-stage centrifugal pump with and without balancing holes. As a result, an efficiency difference of 12.9% occurred depending on the existence and absence of balancing holes at a flow rate of 55 m 3 /h and an efficiency difference of 13.4% at a flow rate of 80 m 3 /h.…”

Section: Introductionmentioning

confidence: 99%

CFD Analysis on the Balancing Hole Design for Magnetic Drive Centrifugal Pumps

Kim

Yun

2020

Energies

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Balancing holes in single-suction centrifugal pumps are generally applied to attenuate the axial thrust caused by a pressure difference between the front side of a shroud and the rear side of a hub of an impeller. The magnetic drive pump, the subject of this study, has a leak-free airtight structure and an integrated structure of the impeller and inner magnet. To prevent the performance degradation of the magnetic drive caused by heat during operation, complex cooling flow paths connected to balancing holes have been designed so that a sufficient amount of coolant would flow around the magnetic drive. Due to this spatial characteristic, when balancing holes are applied to a magnetic drive pump, the balancing hole flow path becomes very long compared to that of balancing holes applied to conventional pumps. When the balancing hole flow path is long, the flow path loss increases, which in turn increases the adverse effect of balancing holes on the pump performance. Therefore, the design of highly efficient balancing holes to which a sufficient amount of coolant can be supplied is critical in a magnetic drive pump. To this end, two types of balancing holes were investigated in this study. First, balancing holes are drilled in the impeller that rotates during operation. Second, balancing holes are drilled in the inner shaft installed to maintain the centre of rotation of the impeller during pump operation. The results confirmed the flow characteristics of the two types of balancing holes and verified the effect of each balancing hole on the pump performance. Finally, this study found that drilling balancing holes in the shaft were appropriate for the magnetic drive pump, and this type can maintain relatively high efficiency and supply a sufficient amount of coolant to maintain the efficiency of the magnetic drive.

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“…Hence the parameters related to the impeller are directly affecting the performance of the pump [3]. One of them is the blade exit angle; if it is not correctly designed, it can negatively affect the head and the hydraulic efficiency of the pump.…”

Section: Introductionmentioning

confidence: 99%

Numerical identification of blade exit angle effect on the performance for a multistage centrifugal pump impeller

Babayigit

Kocaaslan

Aksoy

et al. 2015

EPJ Web of Conferences

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Abstract. Nowadays, single and multistage centrifugal pumps are widely used in industrial and mining enterprises. One of the most important components of a centrifugal pump is the impeller. The performance characteristics are related to the pump comprising the head and the overall efficiency rely a great deal on the impeller geometry. In this work, effects of blade exit angle change on hydraulic efficiency of a multi stage pump impeller are investigated via Ansys-Fluent computational fluid dynamics software for constant width impeller entrance and exit gates, blade numbers and blade thickness. Firstly, the flow volume of a centrifugal pump impeller is generated and then mesh structure is formed for the full impeller flow volume. Secondly, rotational periodic flow model are adopted in order to examine the effect of periodic flow assumption on the performance predictions. Corresponding to the available experimental data, inlet mass flow rate, outlet static pressure and rotation of impeller are taken as 0.02m

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The effect of balance holes to centrifugal pump performance

Cited by 5 publications

References 5 publications

A Review on Underwater Collection and Transportation Equipment of Polymetallic Nodules in Deep-Sea Mining

A Review on Underwater Collection and Transportation Equipment of Polymetallic Nodules in Deep-Sea Mining

CFD Analysis on the Balancing Hole Design for Magnetic Drive Centrifugal Pumps

Numerical identification of blade exit angle effect on the performance for a multistage centrifugal pump impeller

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