초록 ▼

A magnetic drive for coupling mechanical power to the interior of a high pressure vessel is disclosed. The drive includes an output or driven portion including a non-magnetic housing hermetically sealed to a wall of the vessel and containing an output shaft which extends into the vessel. The shaft i

A magnetic drive for coupling mechanical power to the interior of a high pressure vessel is disclosed. The drive includes an output or driven portion including a non-magnetic housing hermetically sealed to a wall of the vessel and containing an output shaft which extends into the vessel. The shaft is mounted for rotation in bearings contained within a cylindrical extension of the housing projecting into the vessel interior. The opposite end of the shaft carries a plurality of permanent magnet segments coaxial therewith and is located within a high pressure gas barrier of the housing external of the vessel. Input power is provided by an input shaft connected to a power source, the input shaft carrying a housing which is coaxial to the gas barrier and has permanent magnets therein which will interact with the output shaft magnets upon rotation of the input shaft to cause rotation of the output shaft. Integrally formed in the input housing is a centrifugal blower which will draw air along the gas barrier during rotation of the input shaft to provide cooling therefor. The structure is compact, is able to cool the entire gas barrier and keeps the formation of eddy currents and their inherent losses to a minimum.

대표청구항 ▼

A magnetic drive coupling for a high pressure vessel with an external wall, comprising a first shaft; first support means for supporting one end of said first shaft within the vessel; a first plurality of permanent magnets on the other end of said first shaft, said other end of said first shaft exte

A magnetic drive coupling for a high pressure vessel with an external wall, comprising a first shaft; first support means for supporting one end of said first shaft within the vessel; a first plurality of permanent magnets on the other end of said first shaft, said other end of said first shaft extending through an opening in the vessel exterior wall; a high pressure gas barrier means of high electrical volume resistivity hermetically sealed to the vessel exterior wall and enveloping said first shaft other end and said first magnets for sealing said first magnets and said first shaft other end within the vessel; a second shaft aligned with said first shaft; annular cup-shaped housing means fixed to said second shaft which surrounds and is radially spaced from said gas barrier means; a second plurality of permanent magnets mounted in said housing means, aligned with said first magnets and radially spaced from said gas barrier means; and centrifugal blower means fixed to said housing means for drawing air through the space between said second magnets and said gas barrier means to cool said gas barrier means.