CN211819877U - Water pump frequency conversion control system - Google Patents
Water pump frequency conversion control system Download PDFInfo
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- CN211819877U CN211819877U CN201922034968.7U CN201922034968U CN211819877U CN 211819877 U CN211819877 U CN 211819877U CN 201922034968 U CN201922034968 U CN 201922034968U CN 211819877 U CN211819877 U CN 211819877U
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- converter
- contactor
- frequency
- water pump
- control system
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Abstract
The utility model discloses a water pump frequency conversion control system, including the converter, the inlet wire end introduction equipment power of converter, the output of converter is connected with the input of three contactor respectively, the output of contactor is connected with three motors respectively, be connected with PLC through three binding post on the coil of contactor. The beneficial effects are that: contactor control signal is by PLC through analog module, digital module conversion control, select to open and stop a certain motor wherein according to required water yield, normally launch 1 motor, when level sensor perception water level is higher than the alert water level, add the frequency automatically, when the discharge still can't reach after adding the frequency, PLC automatic control starts the second platform, when the water level is less than the alert water level, stop the second platform fan, and reduce the converter frequency conversion, carry out the constant frequency control, can practice thrift a large amount of electric power costs like this, can high-efficiently use equipment, and the use of converter itself ability protective equipment.
Description
Technical Field
The utility model relates to a water pump technical field especially relates to a water pump frequency conversion control system.
Background
The existing clean water pump is started and stopped under the soft start control, the requirement on the water displacement is high, the original electronic control cannot perform frequency modulation to increase or decrease the water displacement, when the water volume is small, 1 water pump is started on site, when the water volume is large, the number of running water pumps is reduced, the operation mode greatly influences the production efficiency and the equipment use loss rate, and frequent starting influences the service life of a motor and the electric energy loss.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a water pump frequency conversion control system can reduce the converter frequency conversion, carries out the constant frequency control, can practice thrift a large amount of electric power costs like this, can high-efficient user equipment, and the use that converter itself can protective apparatus.
The technical scheme of the utility model is realized like this:
the utility model provides a water pump frequency conversion control system, includes the converter, the inlet wire end inlet device power of converter, the output of converter is connected with the input of three contactor respectively, the output of contactor is connected with three motors respectively, be connected with PLC through three binding post on the coil of contactor.
Furthermore, the device also comprises a potentiometer, and the potentiometer is connected with the frequency converter through three leading-out ends.
Furthermore, a current transformer is arranged between the contactor and the frequency converter.
Furthermore, an ammeter is connected to the current transformer.
Furthermore, the frequency converter is also connected with a brake resistor.
The utility model has the advantages that: leading into every contactor upper end through the converter is qualified for the next round of competitions, the electrical equipment is introduced respectively to contactor lower end, contactor control signal is through analog module by PLC, digital module conversion control, select to open according to the required water yield of production and stop a certain platform motor wherein, normally launch 1 motor, when level sensor perception water level is higher than the alert water level, carry out the add-frequency automatically, when the discharge still can't reach after the add-frequency, PLC automatic control starts the second platform, when the water level is less than the alert water level, stop the second platform fan, and reduce the converter frequency conversion, carry out the constant frequency control, can practice thrift a large amount of electric power costs like this, can high-efficient use equipment, and the use of converter itself can the protection equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a circuit diagram of a water pump frequency conversion control system;
fig. 2 is a PLC circuit diagram.
In the figure:
1. a frequency converter; 2. a wiring terminal; 3. a brake resistor; 4. an ammeter; 5. a current transformer; 6. a contactor; 7. a motor; 8. a potentiometer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
According to the utility model discloses an embodiment provides a water pump frequency conversion control system.
Referring to fig. 1-2, according to the utility model discloses a water pump frequency conversion control system, including converter 1, the inlet wire end leading-in equipment power of converter 1, the output of converter 1 is connected with the input of three contactor 6 respectively, contactor 6's output is connected with three motors 7 respectively, be connected with PLC through three binding post 2 on contactor 6's the coil.
In one embodiment, the frequency converter further comprises a potentiometer 8, and the potentiometer 8 is connected with the frequency converter 1 through three leading-out terminals.
In one embodiment, a current transformer 5 is provided between the contactor 6 and the frequency converter 1.
In one embodiment, an ammeter 4 is connected to the current transformer 5.
In one embodiment, a brake resistor 3 is further connected to the frequency converter 1.
In the specific implementation process, the soft start is changed into the frequency converter control start, one frequency converter 1 is additionally arranged on the front sections of two motors to perform one-to-one control, a liquid level sensor is arranged in a water volume usage site reservoir, analog signals of the liquid level sensor are introduced into a PLC (programmable logic controller) for checking, monitoring, alarming and the like, an equipment power supply 380V is introduced into an inlet wire of the frequency converter 1, an outlet wire of the frequency converter 1 is introduced into an upper end head of each contactor 6, the lower end heads of the contactors 6 are respectively introduced into motor equipment, control signals of the contactors 6 are controlled by the PLC through the conversion of an analog quantity module and a digital quantity module, a certain motor is selected to be started or stopped according to the water volume required by production, and the 1 motor is normally started. When level sensor perception water level was higher than the warning water level, the automatic frequency that adds, when the discharge still can't reach after the frequency that adds, PLC automatic control starts the second platform, and when the water level was less than the warning water level, the second fan was stopped use to reduce the converter frequency conversion, carry out the constant frequency control, can practice thrift a large amount of electric power costs like this, ability high-efficient use equipment, and the use of converter itself ability protective apparatus.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a water pump frequency conversion control system, its characterized in that, includes converter (1), the inlet wire end drop device power of converter (1), the output of converter (1) is connected with the input of three contactor (6) respectively, the output of contactor (6) is connected with three motor (7) respectively, be connected with PLC through three binding post (2) on the coil of contactor (6).
2. The variable-frequency control system of the water pump according to claim 1, characterized by further comprising a potentiometer (8), wherein the potentiometer (8) is connected with the frequency converter (1) through three leading-out terminals.
3. A water pump frequency conversion control system according to claim 1, characterized in that a current transformer (5) is provided between the contactor (6) and the frequency converter (1).
4. A water pump frequency conversion control system according to claim 3, characterized in that an ammeter (4) is connected to the current transformer (5).
5. The variable frequency control system of the water pump according to claim 1, characterized in that a brake resistor (3) is further connected to the frequency converter (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922034968.7U CN211819877U (en) | 2019-11-22 | 2019-11-22 | Water pump frequency conversion control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922034968.7U CN211819877U (en) | 2019-11-22 | 2019-11-22 | Water pump frequency conversion control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211819877U true CN211819877U (en) | 2020-10-30 |
Family
ID=73026906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922034968.7U Active CN211819877U (en) | 2019-11-22 | 2019-11-22 | Water pump frequency conversion control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211819877U (en) |
-
2019
- 2019-11-22 CN CN201922034968.7U patent/CN211819877U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230000 Longqiao Town, Lujiang County, Hefei City, Anhui Province Patentee after: Anhui Lujiang Longqiao Mining Co.,Ltd. Address before: 230000 Longqiao Town, Lujiang County, Hefei City, Anhui Province Patentee before: ANHUI PROVINCE LUJIANG LONGQIAO MINING Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |