公开(公告)号：US06558139B2

公开(公告)日：2003-05-06

申请号：US09733257

申请日：2000-12-08

申请人： Dan Nguyen ,  Gary Templin ,  Brannon Baskin

发明人： Dan Nguyen ,  Gary Templin ,  Brannon Baskin

IPC分类号： F04B1700

CPC分类号： F04D7/02 ,  F04D13/026 ,  F04D29/026 ,  F05D2300/171 ,  F05D2300/20 ,  F05D2300/436 ,  F16C19/06 ,  F16C33/303 ,  F16C33/3875 ,  F16C2300/52 ,  F16C2360/42

摘要： A self lubricating bearing for use submerged in cryogenic fluids. The self-lubricating bearing comprises hardened races, hardened rolling elements and polymeric retainers or cages. More particularly, the rolling elements may be hardened balls, and the polymeric cages may include PEEK. In particular a bearing for self lubricated use in seal-less, magnetic drive pump for pumping fluids at very low temperatures and cryogenic temperatures below about −100 degrees centigrade such as liquid nitrogen and temperatures below about −150 degrees centigrade such as liquefied natural gas (LNG). An environment for submerged use of such a bearing may be a magnetically driven cryogenic pump with a housing having an intake and exhaust with a back plate mounted therein in which a shaft is journaled in self-lubricating bearings having hardened stainless steel or ceramic balls, stainless steel races and polymeric retainers or cages for retaining the balls for rolling contact in the races. An impeller is mounted on the first end and a first magnet is mounted on the second end of the shaft.

摘要翻译： 用于低温液体的自润滑轴承。 自润滑轴承包括硬化种类，硬化滚动元件和聚合物保持器或笼。 更具体地，滚动元件可以是硬化球，并且聚合物笼可以包括PEEK。 特别是用于无密封的磁力驱动泵中的用于自动润滑的轴承，用于在非常低的温度下泵送流体，低于约-100摄氏度的低温温度，例如液氮和低于约-150摄氏度的温度，例如液化天然气（ LNG）。 用于浸没使用这种轴承的环境可以是磁驱动的低温泵，其具有外壳，其具有安装在其中的后板的进气和排气，其中轴在具有硬化的不锈钢或陶瓷球的自润滑轴承中轴颈，不锈钢 钢种和聚合物保持器或保持架，用于保持球在滚道中的滚动接触。 叶轮安装在第一端上，第一磁体安装在轴的第二端上。