JPS57122183A - Electric well pump - Google Patents
Electric well pumpInfo
- Publication number
- JPS57122183A JPS57122183A JP634581A JP634581A JPS57122183A JP S57122183 A JPS57122183 A JP S57122183A JP 634581 A JP634581 A JP 634581A JP 634581 A JP634581 A JP 634581A JP S57122183 A JPS57122183 A JP S57122183A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- condensor
- contact
- shut
- circuit
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE:To catch abnormal temperature increase in a pump in order to stop the operation by positioning a thermoswitch to contact with or in the vicinity of a condensor. CONSTITUTION:When excessive current flows due to locking effect of a motor 1 or the like and the motor 1 may be damaged by burning, a relay 120 for preventing the motor 1 from damage of burning acts to shut a circuit. And when an operation is continued without opening a contact even if a pressure reaches given level on account of malfunction of a pressure switch 19 or each part of the motor 1 has unusual high temperature with its loadless operation, a thermo- switch 160 serves to open the contact to shut the circuit. In the surface of a condensor 130 there is a large temperature increase difference between normal and abnormal operations compared with coil part and therefore the condensor 130 is liable to accept abnormalness.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP634581A JPS57122183A (en) | 1981-01-21 | 1981-01-21 | Electric well pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP634581A JPS57122183A (en) | 1981-01-21 | 1981-01-21 | Electric well pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57122183A true JPS57122183A (en) | 1982-07-29 |
Family
ID=11635777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP634581A Pending JPS57122183A (en) | 1981-01-21 | 1981-01-21 | Electric well pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57122183A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5127337A (en) * | 1985-04-24 | 1992-07-07 | Urban Transportation Development Corp., Ltd. | Reaction rail |
JP2020020336A (en) * | 2018-07-23 | 2020-02-06 | 株式会社荏原製作所 | Water supply device |
-
1981
- 1981-01-21 JP JP634581A patent/JPS57122183A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5127337A (en) * | 1985-04-24 | 1992-07-07 | Urban Transportation Development Corp., Ltd. | Reaction rail |
JP2020020336A (en) * | 2018-07-23 | 2020-02-06 | 株式会社荏原製作所 | Water supply device |
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