CN204597841U - With the constant pressure water supply system of remote monitoring function - Google Patents
With the constant pressure water supply system of remote monitoring function Download PDFInfo
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- CN204597841U CN204597841U CN201520186461.2U CN201520186461U CN204597841U CN 204597841 U CN204597841 U CN 204597841U CN 201520186461 U CN201520186461 U CN 201520186461U CN 204597841 U CN204597841 U CN 204597841U
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Abstract
The utility model relates to a kind of constant pressure water supply system with remote monitoring function, comprise variable frequency regulating speed control circuit, variable frequency regulating speed control circuit comprises the rectification circuit be electrically connected successively, filter circuit, DC/DC translation circuit, inverter circuit and motor, for controlling controller and the power panel of frequency converter operation, controller comprises driver element, pulse control unit, analog quantity detecting unit, protective circuit unit, wireless communication unit and the main control chip for controlling unit operation, rectification circuit and filter circuit are in series with charging resistor, contactor is parallel with at the two ends of charging resistor, contactor is controlled by the controller, the service data that other units gather is transferred to monitor data center by wireless network protocol by wireless communication unit.The utility model, can localizing faults exactly by arranging wireless communication unit on the controller, for client saves the repair and maintenance time, can also realize the information inquiry to equipment and editor.
Description
Technical field:
The utility model belongs to constant pressure water supply system control technology field, relates to the constant pressure water supply system of band remote monitoring function.
Background technology:
Water system is an indispensable important ring in national product life.Traditional water supply mode floor space is large, and water quality is easily polluted, and capital expenditure is many, and topmost shortcoming to be hydraulic pressure can not keep constant, cause equipment component cisco unity malfunction.Variable-frequency control technique is a kind of alternating current machine stepless time adjustment technology of novel maturation, and it is widely used in speeds control field, particularly water supply industry with its unique excellent control performance.
Due to safety in production and the special requirement of quality of water supply, have strict requirement to constant pressure water supply pressure, thus variable-frequency control technique obtains more deep application.Constant pressure water supply technology changes electric electromechanics source frequency because adopting frequency converter, and reaches adjustment pump rotary speed change water pump discharge pressure, than the mode of the control water pump discharge pressure by control valve, has and reduces the usefulness that the resistance of ducting greatly reduces loss of damming.
But, frequency converter is regulated to the process of motor frequency, and produced problem in frequency-modulating process, mostly be by remembering record or just could can detecting problem place through repeatedly investigating after failure by operating personnel, therefore this needs a large amount of manpowers, and easily occurs promnesia, in addition, water system receives the impact of frequency converter failure, easily makes troubles to the life of resident.Therefore need to monitor each key performance point to constant pressure water supply system, production process is monitored in real time, can give warning in advance to high-risk event.
Summary of the invention:
The purpose of this utility model is to solve the deficiencies in the prior art, and provide a kind of constant pressure water supply system with remote monitoring function, particular content is as follows:
A kind of constant pressure water supply system with remote monitoring function, comprise variable frequency regulating speed control circuit, described variable frequency regulating speed control circuit comprises the rectification circuit be electrically connected successively, filter circuit, DC/DC translation circuit, inverter circuit and motor, also comprise the controller for controlling frequency converter operation and power panel, it is characterized in that: described controller comprises driver element, pulse control unit, analog quantity detecting unit, protective circuit unit, wireless communication unit and the main control chip for controlling unit operation, described rectification circuit and filter circuit are in series with charging resistor, contactor is parallel with at the two ends of charging resistor, described contactor is controlled by the controller, the service data that other units gather is transferred to monitor data center by wireless network protocol by described wireless communication unit.
Wherein, described rectification circuit comprises three groups of diode groups in parallel in the same way, and often group is connected in series two diodes, draws the input of three-phase alternating current respectively in described diode group.
Wherein, described filter circuit comprises two groups of filter capacitor groups in parallel in the same way, often organizes series connection two electrochemical capacitors in filter capacitor group, each electrochemical capacitor is parallel with resistance.
Wherein, described inverter circuit comprises three groups of insulated gate bipolar transistor groups in parallel in the same way, often organize connection two insulated gate bipolar transistors, the output of motor is drawn respectively in described insulated gate bipolar transistor group, the described grid often the organizing insulated gate bipolar transistor group controller that is electrically connected is connected with power panel, the emitter of described insulated gate bipolar transistor group is connected with the positive pole of filter capacitor group, and the collector electrode of described insulated gate bipolar transistor group is connected with the negative pole of filter capacitor group.
Wherein, when three-phase alternating current converts the direct current of pulsation to after rectification circuit, the direct current of pulsation charges to electrochemical capacitor through charging resistor, and electrochemical capacitor starts energy storage, end to be charged, controller sends pickup signal to contactor, and contactor closes, charging resistor short circuit, frequency converter has powered on, direct current through filter circuit filtering, and then converts high voltage direct current to low-voltage DC by DC/DC translation circuit, and inverter circuit converts low-voltage DC to interchange and exports motor to; Controller according to the electric machine frequency preset by pulse control unit to inverter circuit output regulation signal.
The utility model beneficial effect compared with prior art: the utility model is by arranging wireless communication unit on the controller, conduct monitoring at all levels is implemented by the data of constant pressure water supply system by wireless network protocol, by the analysis to data, can localizing faults exactly, for client saves the repair and maintenance time, reduce repair and maintenance personnel cost, the information inquiry to equipment and editor can also be realized; In the utility model, soft starting mode is adopted to frequency converter in addition, namely the contactor in the utility model is open type gate-controlled switch, and when frequency converter does not power on, filter circuit is connected with DC/DC translation circuit and inverter circuit and is off, when after correct wiring, frequency converter can normally export; When power line being received inverter output terminal by mistake, power on and cannot form closed-loop path, controller keeps power failure state because filter capacitor cannot charge always, i.e. safe condition, can effectively avoid frequency converter to cause aircraft bombing because of mis-wired, avoid fault type to lose.
Accompanying drawing illustrates:
Fig. 1 is the circuit theory diagrams of the utility model constant pressure water supply system;
Fig. 2 is the schematic diagram of the utility model remote monitoring part.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of constant pressure water supply system with remote monitoring function, comprise variable frequency regulating speed control circuit, wherein variable frequency regulating speed control circuit comprises rectification circuit 100, filter circuit 200, inverter circuit 300, DC/DC translation circuit 900, motor 400, controller 500 and power panel 600, controller 500 and power panel 600 normally work for controlling frequency converter, rectification circuit 100 and filter circuit 200 are in series with charging resistor 700, the two ends of charging resistor 700 are parallel with contactor 800, the controlled device 500 of contactor 800 controls, the direct current of three-phase alternating current output ripple after rectification circuit 100, direct current charges after charging resistor in filter circuit 200, to be charged complete after, contactor 800 receives the closure signal of self-controller 500, by charging resistor 700 short circuit, now namely complete powering on of frequency converter.After this, DC/DC translation circuit 900 is inputed to after filter circuit 200 pairs of direct current filtering, high voltage direct current is converted to low-voltage DC input inverter circuit 300, the alternating current through inverter circuit 300 direct current being converted to size and frequency-adjustable exports motor 400 to.
As shown in Figure 2, its middle controller 500 comprises driver element 510, pulse control unit 520, analog quantity detecting unit 530, protective circuit unit 540, wireless communication unit 550 and the main control chip 560 for controlling unit operation, wireless communication unit 550 by wireless network protocol by driver element 510, pulse control unit 520, analog quantity detecting unit 530, service data on protective circuit unit 540 transfers to monitor data center 570, by monitor data center, constant pressure water supply system is monitored in real time, inversion is there is in driver element 510 for driving inverter circuit 300, pulse control unit 520 is for regulating reverse frequency, analog quantity detecting unit 530 is for detecting the real-time size of current of motor 400, protective circuit unit 540 is for implementing protection when electric current is excessive or temperature is too high.
Filter circuit 200 comprises two groups of filter capacitor groups in parallel in the same way, often organizes series connection two electrochemical capacitors in filter capacitor group, each electrochemical capacitor is parallel with resistance.
Inverter circuit 300 comprises three groups of insulated gate bipolar transistor groups in parallel in the same way, often organize connection two insulated gate bipolar transistors, the output of motor is drawn respectively in described insulated gate bipolar transistor group, the grid often the organizing insulated gate bipolar transistor group controller that is electrically connected is connected with power panel, the emitter of insulated gate bipolar transistor group is connected with the positive pole of filter capacitor group, and the collector electrode of insulated gate bipolar transistor group is connected with the negative pole of filter capacitor group.
When the filtered direct current of circuit 200 after filtering through DC/DC translation circuit 900 be converted to input inverter circuit 300 after low-voltage direct time, main control chip 560 is to driver element 510 output drive signal, driver element 510 triggers the grid of insulated gate bipolar transistor, the conducting of insulated gate bipolar transistor group, in reversals, main control chip 560 adjusts the output to voltage and the frequency of motor 400 by pulse control unit.
The utility model is by arranging wireless communication unit on the controller, conduct monitoring at all levels is implemented by the data of constant pressure water supply system by wireless network protocol, by the analysis to data, can localizing faults exactly, for client saves the repair and maintenance time, reduce repair and maintenance personnel cost, the information inquiry to equipment and editor can also be realized; In the utility model, soft starting mode is adopted to frequency converter in addition, namely the contactor in the utility model is open type gate-controlled switch, and when frequency converter does not power on, filter circuit is connected with DC/DC translation circuit and inverter circuit and is off, when after correct wiring, frequency converter can normally export; When power line being received inverter output terminal by mistake, power on and cannot form closed-loop path, controller keeps power failure state because filter capacitor cannot charge always, i.e. safe condition, can effectively avoid frequency converter to cause aircraft bombing because of mis-wired, avoid fault type to lose.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (4)
1. the constant pressure water supply system with remote monitoring function, comprise variable frequency regulating speed control circuit, described variable frequency regulating speed control circuit comprises the rectification circuit be electrically connected successively, filter circuit, DC/DC translation circuit, inverter circuit and motor, also comprise the controller for controlling frequency converter operation and power panel, it is characterized in that: described controller comprises driver element, pulse control unit, analog quantity detecting unit, protective circuit unit, wireless communication unit and the main control chip for controlling unit operation, described rectification circuit and filter circuit are in series with charging resistor, contactor is parallel with at the two ends of charging resistor, described contactor is controlled by the controller, the service data that other units gather is transferred to monitor data center by wireless network protocol by described wireless communication unit.
2. a kind of constant pressure water supply system with remote monitoring function according to claim 1, it is characterized in that: described rectification circuit comprises three groups of diode groups in parallel in the same way, often group is connected in series two diodes, draws the input of three-phase alternating current respectively in described diode group.
3. a kind of constant pressure water supply system with remote monitoring function according to claim 1, it is characterized in that: described filter circuit comprises two groups of filter capacitor groups in parallel in the same way, often organize series connection two electrochemical capacitors in filter capacitor group, each electrochemical capacitor is parallel with resistance.
4. a kind of constant pressure water supply system with remote monitoring function according to claim 1, it is characterized in that: described inverter circuit comprises three groups of insulated gate bipolar transistor groups in parallel in the same way, often organize connection two insulated gate bipolar transistors, the output of motor is drawn respectively in described insulated gate bipolar transistor group, the described grid often the organizing insulated gate bipolar transistor group controller that is electrically connected is connected with power panel, the emitter of described insulated gate bipolar transistor group is connected with the positive pole of filter capacitor group, the collector electrode of described insulated gate bipolar transistor group is connected with the negative pole of filter capacitor group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520186461.2U CN204597841U (en) | 2015-03-31 | 2015-03-31 | With the constant pressure water supply system of remote monitoring function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520186461.2U CN204597841U (en) | 2015-03-31 | 2015-03-31 | With the constant pressure water supply system of remote monitoring function |
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| CN204597841U true CN204597841U (en) | 2015-08-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776606A (en) * | 2016-03-05 | 2016-07-20 | 马骏 | Multiple water filtering system adopting constant-pressure control technology |
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2015
- 2015-03-31 CN CN201520186461.2U patent/CN204597841U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776606A (en) * | 2016-03-05 | 2016-07-20 | 马骏 | Multiple water filtering system adopting constant-pressure control technology |
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