Author/Authors :
Sreedhar، نويسنده , , B.K. Jeevan Kumar، نويسنده , , R. Nirmal and Sharma، نويسنده , , Prashant and Ruhela، نويسنده , , Shivprakash and Philip، نويسنده , , John and Sundarraj، نويسنده , , S.I. and Chakraborty، نويسنده , , N. and Mohana، نويسنده , , M. and Sharma، نويسنده , , Vijay and Padmakumar، نويسنده , , G. and Nashine، نويسنده , , B.K. and Rajan، نويسنده , , K.K.، نويسنده ,
Abstract :
Sodium centrifugal pumps employ conventional oil cooled bearings and mechanical seals to support the rotor assembly outside sodium and to seal the cover gas from the atmosphere. Although engineered safety features are incorporated in the design and detailed operational procedures formulated to ensure that no oil contamination of sodium can occur, there have been incidents of oil ingress into sodium. A design variant that eliminates the need for oil in top bearings and seals is therefore a promising option. This paper discusses the work in progress to develop a magnetic bearing and ferrofluid seal combination that can achieve this purpose.
