CN201925179U - Energy-saving automatic control device of electric centrifugal pump - Google Patents
Energy-saving automatic control device of electric centrifugal pump Download PDFInfo
- Publication number
- CN201925179U CN201925179U CN2010206737697U CN201020673769U CN201925179U CN 201925179 U CN201925179 U CN 201925179U CN 2010206737697 U CN2010206737697 U CN 2010206737697U CN 201020673769 U CN201020673769 U CN 201020673769U CN 201925179 U CN201925179 U CN 201925179U
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- centrifugal pump
- power
- flow switch
- energy
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- Expired - Fee Related
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Abstract
An energy-saving automatic control device of an electric centrifugal pump comprises a low-power centrifugal pump, a high-power centrifugal pump, a first relay, a second relay and a flow switch, wherein the liquid pipelines of the low-power electric centrifugal pump and the high-power electric centrifugal pump are connected in parallel on the outlet liquid main pipeline; the flow switch is mounted at the input end of the liquid pipeline; the movable contact of the flow switch is connected with the first phase line in a power source, the first stationary contact of the flow switch is connected with one end of the first relay, the second stationary contact of the flow switch is connected with one end of the second relay, and the other end of the first relay and the other end of the second relay are connected with the second phase line and the third phase line in the power source respectively; and the contacts of the first relay are connected in series on the power circuit of the low-power centrifugal pump, and the contacts of the second relay are connected in series on the power circuit of the high-power centrifugal pump. Compared with the prior art, the energy-saving automatic control device of the electric centrifugal pump has the advantages of simple structure, convenience in use, low cost and high automation.
Description
Technical field
The utility model relates to energy-saving and cost-reducing technical field, is specifically related to a kind of electric centrifugal pump energy-saving automatic control device.
Background technique
In continuous chemical process, when using electric centrifugal pump to send liquid outside, be usually designed in parallel use of electric centrifugal pump of two equal-wattages, a running, another is standby.Because the influence of each side factor, the flow of sending liquid outside can change, and when flow diminished, the power consumption of electric centrifugal pump can not change, and this has also just wasted electric energy accordingly.Along with development of science and technology, the motor frequency change technology has appearred on the market, saving power has been played certain effect, but motor frequency change technical sophistication, expense are higher, are unfavorable for saving cost of production.The number of patent application that the applicant applied in the past is 200820232555.9 utility model patent, utilizes two centrifugal pumps of high or low power and installed control switch additional in its circuit, has saved the energy effectively.But it needs manual detection to send fluid flow, manual operation control switch outside, wastes time and energy, and is unfavorable for automatic management.
Summary of the invention
The purpose of this utility model is exactly the defective that exists at prior art, and a kind of electric centrifugal pump energy-saving automatic control device is provided.
Its technological scheme is: comprise small-power centrifugal pump, high-power centrifugal pump, first relay, second relay and flow switch, the liquid line of electronic centrifugal pump of small-power and high-power electric centrifugal pump is connected in parallel on the main line of sending liquid outside.Described flow switch is installed in the input end of liquid line, the movable contact of this flow switch is connected with first phase line in the power supply, its first stationary contact is connected with an end of first relay, second stationary contact is connected with an end of second relay, and the other end of the other end of first relay and second relay is connected with second phase line and third phase line in the power supply respectively; Described first relay contact is connected in series on the power circuit of small-power centrifugal pump, and described second relay contact is connected in series on the power circuit of high-power centrifugal pump.
Wherein, described first relay and second relay are A.C. contactor.
The utility model has advantage simple in structure, easy to use, with low cost and that the automation performance is high compared with prior art.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model a structural representation.
Embodiment
With reference to accompanying drawing, a kind of electric centrifugal pump energy-saving automatic control device, comprise small-power centrifugal pump D1, high-power centrifugal pump D2, first relay K 1, second relay K 2 and flow switch LK, the liquid line of electronic centrifugal pump D1 of small-power and high-power electric centrifugal pump D2 is connected in parallel on the main line of sending liquid outside.Described flow switch LK is installed in the input end of liquid line, the movable contact of this flow switch LK is connected with first phase line among the power supply U, its first stationary contact is connected with an end of first relay K 1, second stationary contact is connected with an end of second relay K 2, and the other end of the other end of first relay K 1 and second relay K 2 is connected with second phase line and third phase line among the power supply U respectively; The described first relay contact K1-1 is connected in series on the power circuit of small-power centrifugal pump D1, and the described second relay contact K2-1 is connected in series on the power circuit of high-power centrifugal pump D2.Wherein, described first relay K 1 and second relay K 2 are A.C. contactor.
Claims (2)
1. electric centrifugal pump energy-saving automatic control device, comprise the small-power centrifugal pump, high-power centrifugal pump, first relay, second relay and flow switch, the liquid line of electronic centrifugal pump of small-power and high-power electric centrifugal pump is connected in parallel on the main line of sending liquid outside, it is characterized in that: described flow switch is installed in the input end of liquid line, the movable contact of this flow switch is connected with first phase line in the power supply, its first stationary contact is connected with an end of first relay, second stationary contact is connected with an end of second relay, and the other end of the other end of first relay and second relay is connected with second phase line and third phase line in the power supply respectively; Described first relay contact is connected in series on the power circuit of small-power centrifugal pump, and described second relay contact is connected in series on the power circuit of high-power centrifugal pump.
2. electric centrifugal pump energy-saving automatic control device according to claim 1 is characterized in that: described first relay and second relay are A.C. contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206737697U CN201925179U (en) | 2010-12-22 | 2010-12-22 | Energy-saving automatic control device of electric centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206737697U CN201925179U (en) | 2010-12-22 | 2010-12-22 | Energy-saving automatic control device of electric centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925179U true CN201925179U (en) | 2011-08-10 |
Family
ID=44429030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206737697U Expired - Fee Related CN201925179U (en) | 2010-12-22 | 2010-12-22 | Energy-saving automatic control device of electric centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925179U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895011A (en) * | 2017-04-22 | 2017-06-27 | 东莞市丰承泵业制造有限公司 | A kind of remote controlled intelligent centrifugal pump and its control method |
| CN107514356A (en) * | 2017-08-28 | 2017-12-26 | 国家电网公司 | Control system of water pump for power plant construction dry season |
-
2010
- 2010-12-22 CN CN2010206737697U patent/CN201925179U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895011A (en) * | 2017-04-22 | 2017-06-27 | 东莞市丰承泵业制造有限公司 | A kind of remote controlled intelligent centrifugal pump and its control method |
| CN107514356A (en) * | 2017-08-28 | 2017-12-26 | 国家电网公司 | Control system of water pump for power plant construction dry season |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20141222 |
|
| EXPY | Termination of patent right or utility model |