JPS5773892A - Operation monitor for magnetic coupling pump - Google Patents
Operation monitor for magnetic coupling pumpInfo
- Publication number
- JPS5773892A JPS5773892A JP15042380A JP15042380A JPS5773892A JP S5773892 A JPS5773892 A JP S5773892A JP 15042380 A JP15042380 A JP 15042380A JP 15042380 A JP15042380 A JP 15042380A JP S5773892 A JPS5773892 A JP S5773892A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- axial
- electromotive force
- racing
- wear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
PURPOSE: To prevent abnormal operation by detecting axial displacement of rotor due to wear of the bearing or pump racing as a change in electromotive force induced in a detector coil.
CONSTITUTION: As wear of a front bearing 16a which rotates in sliding contact with the thrust collar 18a increases, a rotor 15 moves forward resulting in a larger axial off-alignment G between the rear ends of permanent magnets 12, 13 raising the electromotive force E(v) higher than that of normal operation. On the other hand, when liquid in the pump casing 22 is lost, operating the pump in racing, the axial thrust of a runner 14 is lost bringing the rotor 15 backward due to axial coupling force of permanent magnets 12, 13 until rear ends of both permanent magnets 12, 13 come in axial alignment with each other. At this moment the electromotive force induced in a detector coil 23 is reduced to almost zero. In this manner abnormal operation can be prevented by detecting axial displacement of motor 15 due to wear of the bearing or pump racing as a change in the electromotive force induced in the detector coil 23.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15042380A JPS5773892A (en) | 1980-10-27 | 1980-10-27 | Operation monitor for magnetic coupling pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15042380A JPS5773892A (en) | 1980-10-27 | 1980-10-27 | Operation monitor for magnetic coupling pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5773892A true JPS5773892A (en) | 1982-05-08 |
Family
ID=15496605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15042380A Pending JPS5773892A (en) | 1980-10-27 | 1980-10-27 | Operation monitor for magnetic coupling pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5773892A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6234188U (en) * | 1985-08-20 | 1987-02-28 | ||
JPH0213193U (en) * | 1988-07-04 | 1990-01-26 | ||
US6939115B2 (en) * | 2001-08-18 | 2005-09-06 | Pierburg Gmbh | Wet-type rotor pump |
-
1980
- 1980-10-27 JP JP15042380A patent/JPS5773892A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6234188U (en) * | 1985-08-20 | 1987-02-28 | ||
JPH0213193U (en) * | 1988-07-04 | 1990-01-26 | ||
US6939115B2 (en) * | 2001-08-18 | 2005-09-06 | Pierburg Gmbh | Wet-type rotor pump |
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