| 摘要 |
PCT No. PCT/US97/09291 Sec. 371 Date Feb. 16, 1999 Sec. 102(e) Date Feb. 16, 1999 PCT Filed Jun. 6, 1997 PCT Pub. No. WO97/46806 PCT Pub. Date Dec. 11, 1997A submerged motor pump (4) has an auxiliary bearing assembly (19, 20) for supporting a rotatable main shaft (9) when the submerged motor pump is not in an operating condition or operates in a transient condition. The submerged motor pump includes a pump casing (6), at least one impeller (12), a motor (10,11), and a thrust balancing mechanism (15) for balancing thrust forces. The submerged motor pump further includes hydrostatic bearings (16, 17, 18) for supporting the main shaft at axially spaced locations by a pressurized fluid pumped by the submerged motor pump. The auxiliary bearing assembly has tapered support surfaces (FL, FU) for supporting the main shaft at the axially spaced locations.
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