磁性流体軸シールの耐圧特性とポンプヘの適用

北洞 貴也, 黒川 淳一, 宮副 雄貴, 林 正悦

doi:10.1299/kikaib.60.3086

磁性流体軸シールの耐圧特性とポンプヘの適用

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書誌事項

タイトル別名

Performances of Magnetic Fluid Seal and Application to Turbopumps.
磁性流体軸シールの耐圧特性とポンプへの適用
ジセイリュウタイジクシールノタイアツトクセイトポンプエノテ

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抄録

A magnetic fluid shaft seal can achieve zero-leakage and operate stably against shaft vibration, but the sealing pressure is very low. In order to improve the pressure performance of a magnetic fluid seal and apply it to a turbopump, the seal pressure characteristics are studied theoretically and experimentally. The Poisson equation for magnetic vector potential is solved by FEM, and the seal performances are determined by use of the Bernoulli equation. The validity of the theory is confirmed by experiments using the two-dimensional simple model and the real shaft seal model. Furthermore, a magnetic seal is applied to an actual pump and its performance is measured.