Title:
【発明の名称】浸漬型ナトリウムポンプ
Document Type and Number:
Japanese Patent JP2777188
Kind Code:
B2
Abstract:
An electromagnetic submersible pump (P) has an outer cylindrical stator with a laminated inner cylindrical conductive core (K) for pumping sodium in the duct (D) defined therebetween. The duct (D) defines an inlet (26) at the bottom and an outlet (28) at the top. The outer stator generates upwardly conveyed toroidal magnetic fields which convey sodium from the inlet (26) to the outlet (28). The outer stator has a vertically disposed duct surrounded by alternately stacked layers of coil units and laminates. Upper and lower coil halves of spirally wound common copper bus are joined in series at the center. These upper and lower coil halves are connected as discrete coil units (U) on the coil unit exterior for forming complementary magnetic fields between the coil halves. These coil units, are provided with parallel connection of sequential coil units in groups of four units to each phase of a three phase of 15 Hertz 700 volt RMS power supply. A magnetic field conducting laminate construction (L) sandwiches each coil unit (U) within the outer stator. The laminate construction also maintains rigid heat transferring contact with the central duct in the pump stator to conduct resistance heating away from the coils. Additionally this rigid contact of the laminates to the duct prevents pump wear due to pumping reaction and resultant vibration of the coil unit and laminate layers of the stator. The laminate construction includes an endless arch of hoop tensioned laminates maintained in intimate contact with the stator central duct by a surrounding and peripheral hoop tension wire preferably of molybdenum. Due to differential thermal expansion in which the individual laminates are radially compressed to the central duct by the elastic hoop tension forces in the wire, firm contact with the central duct is maintained during pump operation.
Inventors:
GUREN BAARU BURINSUBORUDO
JON TOMASU ROPEZU
YUUJIN ERUSUWAASU ORITSUCHI
KARUBIN UIRIAMU UESUTO
JON TOMASU ROPEZU
YUUJIN ERUSUWAASU ORITSUCHI
KARUBIN UIRIAMU UESUTO
Application Number:
JP12167689A
Publication Date:
July 16, 1998
Filing Date:
May 17, 1989
Export Citation:
Assignee:
JENERARU EREKUTORITSUKU CO
International Classes:
F04D7/06; F04D13/06; H02K1/12; H02K3/00; H02K44/06; (IPC1-7): H02K44/06
Domestic Patent References:
| JP637989U | ||||
| JP61114946U | ||||
| JP5814704Y2 |
Attorney, Agent or Firm:
Tokunji Ikunuma