| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vertical sealless motor pump with a motor purge system, capable of filling high pressure liquid in a pad type thrust bearing and supplying purge liquid in a motor room by one auxiliary pump, and to provide a pressurized water reactor type nuclear power system. <P>SOLUTION: The vertical sealless motor pump has a motor purge system which includes a pump unit P for handling high temperature liquid and a motor unit M, and fills purge liquid in the motor room from a lower end of the motor unit M. The motor purge system includes a thrust bearing pressurization line L1, a motor room purge liquid filling line L2, and a purge liquid pressurization line L3, and the pressurized purge liquid is changed and supplied to the thrust bearing pressurization line L1 and the motor room purge liquid filling line L2 via a three-way valve 14. A flow rate limit orifice 16 is provided on the bypass line, and a liquid filling pump 12 and a flow regulating valve 15 are provided on the purge liquid pressurization line L3. <P>COPYRIGHT: (C)2012,JPO&INPIT |
