JPS5781182A - Change-over system of electric motor for pump - Google Patents
Change-over system of electric motor for pumpInfo
- Publication number
- JPS5781182A JPS5781182A JP15779880A JP15779880A JPS5781182A JP S5781182 A JPS5781182 A JP S5781182A JP 15779880 A JP15779880 A JP 15779880A JP 15779880 A JP15779880 A JP 15779880A JP S5781182 A JPS5781182 A JP S5781182A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- electric motor
- change
- transferred
- relay
- 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.)
- Granted
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To prevent the pressure pulsation, by driving two pumps simultaneously for a given period when the operating status is transferred from one pump over to the other one.
CONSTITUTION: A relay RYO, which is switched on with a normally opened contact 8a of a flow rate relay 8, is connected to an output terminal of a voltage divider 14 which divides the output voltage of an amplifier 12 at a specified rate and each of To1, to2 of a timer to is connected to the input side of electric motor 2A, 2B respectively. Thereby, two pumps are drived simultaneously for a given period when the operating status is transferred from one pump to the other, so that the pressure pulsation due to delay of starting either ppump can vented.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15779880A JPS5781182A (en) | 1980-11-10 | 1980-11-10 | Change-over system of electric motor for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15779880A JPS5781182A (en) | 1980-11-10 | 1980-11-10 | Change-over system of electric motor for pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5781182A true JPS5781182A (en) | 1982-05-21 |
| JPS637273B2 JPS637273B2 (en) | 1988-02-16 |
Family
ID=15657512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15779880A Granted JPS5781182A (en) | 1980-11-10 | 1980-11-10 | Change-over system of electric motor for pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5781182A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6138182A (en) * | 1984-07-27 | 1986-02-24 | Ebara Corp | Variable speed water supply device |
| JPS62188500U (en) * | 1986-05-20 | 1987-12-01 | ||
| JP2002130147A (en) * | 2000-08-14 | 2002-05-09 | Komatsu Denki Sangyo Kk | Controller for field installation in water treatment facility |
| JP2007177795A (en) * | 2007-03-30 | 2007-07-12 | Mitsubishi Electric Corp | Motor control device for feed-water pump |
-
1980
- 1980-11-10 JP JP15779880A patent/JPS5781182A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6138182A (en) * | 1984-07-27 | 1986-02-24 | Ebara Corp | Variable speed water supply device |
| JPS62188500U (en) * | 1986-05-20 | 1987-12-01 | ||
| JP2002130147A (en) * | 2000-08-14 | 2002-05-09 | Komatsu Denki Sangyo Kk | Controller for field installation in water treatment facility |
| JP4647071B2 (en) * | 2000-08-14 | 2011-03-09 | 小松電機産業株式会社 | On-site facility controller in water treatment facility |
| JP2007177795A (en) * | 2007-03-30 | 2007-07-12 | Mitsubishi Electric Corp | Motor control device for feed-water pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS637273B2 (en) | 1988-02-16 |
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