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2021 | OriginalPaper | Buchkapitel

Rotor Dynamic Analysis of Rotor Assembly of a Small Liquid Metal Pump

verfasst von: Ashish Kumar, Y. V. Nagaraja Bhat, B. K. Sreedhar, S. I. Sundar Raj, S. Murugan, P. Selvaraj

Erschienen in: Proceedings of the 6th National Symposium on Rotor Dynamics

Verlag: Springer Singapore

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Abstract

Fast breeder reactors (FBRs) utilize liquid metal, such as liquid sodium as the main coolant in their heat transport circuits. Choice of liquid sodium as the coolant comes due to its excellent heat transfer and neutronic properties. A 500 MWe, sodium cooled, prototype fast breeder reactor (PFBR) is being commissioned with technology inputs from Indira Gandhi Centre for Atomic Research (IGCAR). This centre has test facilities to demonstrate working and the development of components related to a fast reactor. The liquid sodium needs to be propelled in the loops of heat transport circuits of reactor and hence requires the use of pumps. Use of such pumps to propel liquid sodium has been demonstrated in one of the loops present in IGCAR. Capacity of this pump is 50 m3/h with its shaft currently being supported on top by an angular contact bearing while at bottom by hydrostatic bearing. The rated speed of operation of this pump is 2900 rpm. Use of active magnetic bearings (AMB) in place of oil lubricated bearings is being actively explored to eliminate the chances of oil leakage into the sodium. To demonstrate this concept for primary pump of PFBR, a small-scale magnetic bearing was designed and tested in the 50 m3/h pump. The shaft of this pump was modified to accommodate magnetic bearings and its associated components. Estimation of the critical speed of the shaft, both before and after modification, has been carried out using commercially available finite element analysis (FEA)-based software advanced rotating machinery dynamics (ARMD). Further, unbalance response studies have been carried out to know maximum displacement responses. The details of these analyses and results are discussed in this paper.

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Literatur
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Zurück zum Zitat Chellapandi P (2004) Mechanical vibration analysis of primary sodium pump. In: Internal report. Indira Gandhi Centre for Atomic Research, Kalpakkam Chellapandi P (2004) Mechanical vibration analysis of primary sodium pump. In: Internal report. Indira Gandhi Centre for Atomic Research, Kalpakkam
Metadaten
Titel
Rotor Dynamic Analysis of Rotor Assembly of a Small Liquid Metal Pump
verfasst von
Ashish Kumar
Y. V. Nagaraja Bhat
B. K. Sreedhar
S. I. Sundar Raj
S. Murugan
P. Selvaraj
Copyright-Jahr
2021
Verlag
Springer Singapore
DOI
https://doi.org/10.1007/978-981-15-5701-9_15

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