Journal
FRONTIERS IN ENERGY RESEARCH
Volume 10, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fenrg.2022.937299
Keywords
centrifugal pump; magnetic liquid; seal; pressure pulsation; numerical calculations
Categories
Funding
- National Natural Science Foundation of China [52079118]
- Central leading local (scientific and technological innovation base construction) [XZ202201YD0017C]
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This paper studies the surface pressure pulsation characteristics of the magnetic-fluid sealing membrane of a centrifugal pump under different flow operating conditions. The results show that the pressure decreases with the increase of flow rate and exhibits periodic pulsation.
In order to discuss the surface pressure pulsation characteristics of the magnetic-fluid sealing membrane of centrifugal pump, this paper studies the surface pressure pulsation characteristics of the shaft end sealing membrane under different flow operating conditions of centrifugal pump based on the combination of numerical calculation and experimental verification. The results show that the pressure value on the surface of the magnetic-fluid sealing film decreases with the increase of the flow rate of the centrifugal pump, and the pressure on the surface of the magnetic-fluid sealing film has periodic pulsation, and the period is the time required for a single blade to sweep the volute separating tongue. In one rotation cycle of the runner, the number of reciprocating movements of the magnetic-hydraulic sealing film is the same as the number of blades of the runner. The main reason for the pressure pulsation is that the impeller periodically sweeps the fixed surface of the centrifugal pump.
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