CN204357679U - Remote Variable Frequency Control System for Water Circulating Pump - Google Patents
Remote Variable Frequency Control System for Water Circulating Pump Download PDFInfo
- Publication number
- CN204357679U CN204357679U CN201420755431.4U CN201420755431U CN204357679U CN 204357679 U CN204357679 U CN 204357679U CN 201420755431 U CN201420755431 U CN 201420755431U CN 204357679 U CN204357679 U CN 204357679U
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- CN
- China
- Prior art keywords
- control system
- proof
- variable frequency
- water circulating
- output terminal
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Abstract
The utility model discloses a kind of remote Variable Frequency Control System for Water Circulating Pump, comprise three phase mains end of incoming cables (8), circuit breaker (1), A.C. contactor A(2), A.C. contactor B(7), frequency variator (3), sine wave filter (4), flame-proof converter pump motor (5) and explosion-proof fan (6), the remote Variable Frequency Control System for Water Circulating Pump that the application provides, higher harmonics and overshoot voltage can be reduced on the impact of electrical machine insulation, increase motor working life, control system made control cabinet away from explosion hazard area more in the past, increase handling safety reliability, save the explosion-proof cost of control cabinet.
Description
Technical field
The utility model relates to frequency conversion speed-adjusting system, particularly remote Variable Frequency Control System for Water Circulating Pump.
Background technique
In UF membrane hydrogen retrieval system, soft water in water tank is squeezed into Ammonic washing tower top by high-pressure water pump, flow to bottom Ammonic washing tower, with bottom Ammonic washing tower in the synthesis periodic off-gases that enters form convection current, the ammonia contained in removing synthesis periodic off-gases, when synthesizing periodic off-gases flow and reducing, need to reduce the water pump amount of fetching water, to increase ammonia concn and using water wisely.
In UF membrane hydrogen retrieval system operation, the hydrogen leaked out from sample tap and showering guilding valve belongs to flammable explosive gas, UF membrane hydrogen recovery unit should be divided into explosion hazard area, and water pump control cabinet easily produces spark when switch water pump, and a large amount of higher harmonicss and overshoot voltage can be produced by during the frequency variator adjustment amount of fetching water.This traditional mode of speed regulation deposits larger potential safety hazard, and a large amount of higher harmonicss and overshoot voltage also reduce explosion-proof variable frequency motor working life greatly.
Model utility content
The utility model affects explosion-proof variable frequency motor for the problem of the potential safety hazard existed during prior art breaker in middle water pump and higher harmonics and overshoot voltage, provides a kind of safe and reliable, remote Variable Frequency Control System for Water Circulating Pump of improving explosion-proof variable frequency motor working life.Concrete technological scheme is as follows.
The remote Variable Frequency Control System for Water Circulating Pump that the application provides comprises three phase mains end of incoming cables (8), circuit breaker (1), A.C. contactor A(2), A.C. contactor B(7), frequency variator (3), sine wave filter (4), flame-proof converter pump motor (5) and explosion-proof fan (6), described three phase mains end of incoming cables (8), circuit breaker (1) is linked in sequence, described circuit breaker (1) is provided with main three-phase circuit output terminal (9) and auxiliary three-phase circuit output terminal (10), described main three-phase circuit output terminal (9), A.C. contactor A(2), frequency variator (3), sine wave filter (4), flame-proof converter pump motor (5) is linked in sequence, described auxiliary three-phase circuit output terminal (10), A.C. contactor B(7), explosion-proof fan (6) is linked in sequence.
Further, sine wave filter described in the application (4) comprises series inductor and parallel-capacitor circuit.
Further, sine wave filter described in the application (4) is provided with sine wave filter (4) input end and output terminal; Described frequency variator (3) is provided with frequency variator (3) input end and output terminal; Described flame-proof converter pump motor (5) is provided with flame-proof converter pump motor (5) input end and colling end.
Further, frequency variator described in the application (3) output terminal connects sine wave filter (4) input end.
Further, sine wave filter described in the application (4) output terminal connects flame-proof converter pump motor (5) input end.
Further, the colling end of the pump motor of flame-proof converter described in the application (5) is connected with explosion-proof fan (6).
The utility model compared with prior art, have the following advantages: in this application, by the design of remote Variable Frequency Control System for Water Circulating Pump, the height produced when decreasing frequency control of motor speed subtracts harmonic wave and overshoot voltage, add explosion-proof variable frequency motor working life, extend the distance of frequency conversion tank and explosion-proof variable frequency motor, and control system more in the past makes control cabinet away from explosion hazard area, improve the safety reliability of operation.
Accompanying drawing explanation
Fig. 1: the remote Variable Frequency Control System for Water Circulating Pump structural representation of the utility model;
In figure: 1, circuit breaker; 2, A.C. contactor A; 3, frequency variator; 4, sine wave filter; 5, explosion-proof variable frequency motor; 6, explosion-proof fan; 7, A.C. contactor B; 8, three phase mains end of incoming cables; 9, main three-phase circuit output terminal; 10, auxiliary three-phase circuit output terminal.
Embodiment
Below in conjunction with accompanying drawing, explanation is further explained to the utility model.
As shown in Figure 1: remote Variable Frequency Control System for Water Circulating Pump comprises system three phase mains end of incoming cables (8), circuit breaker (1), A.C. contactor A(2), A.C. contactor B(7), frequency variator (3), sine wave filter (4), flame-proof converter pump motor (5) and explosion-proof fan (6), described three phase mains end of incoming cables (8), circuit breaker (1) is linked in sequence, described circuit breaker (1) is provided with main three-phase circuit output terminal (9) and auxiliary three-phase circuit output terminal (10), described main three-phase circuit output terminal (9), A.C. contactor A(2), frequency variator (3), sine wave filter (4), flame-proof converter pump motor (5) is linked in sequence, described auxiliary three-phase circuit output terminal (10), A.C. contactor B(7), explosion-proof fan (6) is linked in sequence.Sine wave filter (4) comprises series inductor and parallel-capacitor circuit; Frequency variator (3) output terminal connects sine wave filter (4) input end; Sine wave filter (4) output terminal connects flame-proof converter pump motor (5) input end, and the colling end of flame-proof converter pump motor (5) is connected with explosion-proof fan (6).
The remote Variable Frequency Control System for Water Circulating Pump specific works flow process that the application provides is:
UF membrane hydrogen recovery unit is washed in ammonia process at the soft water flux of adjustment water pump, the three phase mains end of incoming cables (8) of threephase AC (380V, 50Hz) is divided into two-way through circuit breaker (1), one road secondary circuit (power: 80W, voltage: 380V, electric current: 0.15A) by A.C. contactor B(7) flow into explosion-proof fan (6) (rotating speed: 2800r/min) for explosion-proof variable frequency motor (5) cooling.Another road major loop (power: 3KW, voltage: 380V, electric current: 7.3A) by A.C. contactor A(2) enter frequency variator (3) change frequency (frequency range 1-50Hz), enter explosion-proof deathtrap after flowing into the higher harmonics and overshoot voltage produced after sine wave filter (4) removes change frequency again and flow into explosion-proof variable frequency motor (rotating speed: 970r/min, power factor: 0.77, efficiency: 81%) drive water pump operation (soft water flux: 1200L/h).
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to according to the technical solution of the utility model and model utility design thereof and replace or change, all should be encompassed within protection domain of the present utility model.
Claims (6)
1. remote Variable Frequency Control System for Water Circulating Pump, it is characterized in that, described system comprises three phase mains end of incoming cables (8), circuit breaker (1), A.C. contactor A(2), A.C. contactor B(7), frequency variator (3), sine wave filter (4), flame-proof converter pump motor (5) and explosion-proof fan (6), described three phase mains end of incoming cables (8), circuit breaker (1) is linked in sequence, described circuit breaker (1) is provided with main three-phase circuit output terminal (9) and auxiliary three-phase circuit output terminal (10), described main three-phase circuit output terminal (9), A.C. contactor A(2), frequency variator (3), sine wave filter (4), flame-proof converter pump motor (5) is linked in sequence, described auxiliary three-phase circuit output terminal (10), A.C. contactor B(7), explosion-proof fan (6) is linked in sequence.
2. remote Variable Frequency Control System for Water Circulating Pump according to claim 1, is characterized in that, sine wave filter (4) comprises series inductor and parallel-capacitor circuit.
3. remote Variable Frequency Control System for Water Circulating Pump according to claim 2, is characterized in that, described sine wave filter (4) is provided with sine wave filter (4) input end and output terminal; Described frequency variator (3) is provided with frequency variator (3) input end and output terminal; Described flame-proof converter pump motor (5) is provided with flame-proof converter pump motor (5) input end and colling end.
4. remote Variable Frequency Control System for Water Circulating Pump according to claim 3, is characterized in that, described frequency variator (3) output terminal connects sine wave filter (4) input end.
5. remote Variable Frequency Control System for Water Circulating Pump according to claim 3, is characterized in that, described sine wave filter (4) output terminal connects flame-proof converter pump motor (5) input end.
6. the remote Variable Frequency Control System for Water Circulating Pump according to claim 1 or 3, is characterized in that, the colling end of described flame-proof converter pump motor (5) is connected with explosion-proof fan (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420755431.4U CN204357679U (en) | 2014-12-05 | 2014-12-05 | Remote Variable Frequency Control System for Water Circulating Pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420755431.4U CN204357679U (en) | 2014-12-05 | 2014-12-05 | Remote Variable Frequency Control System for Water Circulating Pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204357679U true CN204357679U (en) | 2015-05-27 |
Family
ID=53259152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420755431.4U Expired - Fee Related CN204357679U (en) | 2014-12-05 | 2014-12-05 | Remote Variable Frequency Control System for Water Circulating Pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204357679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048893A (en) * | 2015-07-06 | 2015-11-11 | 湖南工业大学 | Method for long-distance speed regulation of DC brushless motor |
-
2014
- 2014-12-05 CN CN201420755431.4U patent/CN204357679U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048893A (en) * | 2015-07-06 | 2015-11-11 | 湖南工业大学 | Method for long-distance speed regulation of DC brushless motor |
| CN105048893B (en) * | 2015-07-06 | 2017-05-17 | 湖南工业大学 | Method for long-distance speed regulation of DC brushless motor |
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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: 20150527 Termination date: 20151205 |
|
| EXPY | Termination of patent right or utility model |