CN218158290U - Power cable leakage detection system - Google Patents
Power cable leakage detection system Download PDFInfo
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- CN218158290U CN218158290U CN202222848458.5U CN202222848458U CN218158290U CN 218158290 U CN218158290 U CN 218158290U CN 202222848458 U CN202222848458 U CN 202222848458U CN 218158290 U CN218158290 U CN 218158290U
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Abstract
The utility model discloses a power cable leakage detection system, which comprises a power adapter, a leakage detector connected with the power adapter, and a WEB server connected with the leakage detector; the power adapter comprises a DC-DC converter connected with a power supply and a small transformer connected with the DC-DC converter; the leakage detector comprises a microprocessor, a surge protector connected with the microprocessor, a first detection line and a second detection line which are respectively connected with the surge protector; a nixie tube connected with the microprocessor and an NB-IOT module connected with the microprocessor through a serial port. The electric leakage detection system effectively avoids electric shock accidents caused by electric leakage, actively finds hidden dangers of electrification of steel stranded wires and electric pole stay wires caused by electric leakage due to damage of cables in real time, and timely eliminates and cures the hidden dangers.
Description
Technical Field
The utility model belongs to the technical field of the leakage detection, especially, relate to a power cable leakage detection system.
Background
In a municipal power supply system or production and manufacture, due to the long-term use of a power cable, the cable is often aged, or other external factors cause the occurrence of a cable leakage phenomenon. Meanwhile, as the cables are arranged more and are complex, the fault point of electric leakage cannot be accurately and timely eliminated, the life of people and the normal power supply of production and manufacturing are influenced, and the personal safety is seriously or even threatened. At present, some leakage detection devices exist, and due to the fact that point-by-point detection is needed, operation is complex, and it is very troublesome to determine a leakage fault point.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned deficiencies of the prior art, the object of the present invention is to: the utility model provides a power cable electric leakage detection system can effectively avoid the electric shock accident that the electric leakage caused, accomplishes real-time, initiative discovery because the damaged electric leakage of cable leads to electrified hidden danger of steel strand wires, pole guy wire and in time gets rid of the renovation.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a power cable leakage detection system comprises a power adapter, a leakage detector connected with the power adapter, and a WEB server connected with the leakage detector;
the power adapter comprises a DC-DC converter connected with a power supply and a small transformer connected with the DC-DC converter;
the leakage detector comprises a microprocessor, a surge protector connected with the microprocessor, a first detection line and a second detection line which are respectively connected with the surge protector, a nixie tube connected with the microprocessor and used for displaying detection voltage, and an NB-IOT module connected with the microprocessor through a serial port and used for transmitting data;
the WEB server comprises a monitoring voice reminding module and a GSM warning short message notification module, wherein the monitoring voice reminding module is used for sending out electric leakage information reminding.
Preferably, the surge protector comprises a varistor and a gas discharge tube connected in series with the varistor.
Preferably, the surge protector is further connected with a voltage dividing resistor and a half-wave rectifier in parallel.
Preferably, the surge protector is also connected with the ground and a system ground.
Preferably, the leakage detector is connected to a communication line.
Preferably, the power supply for supplying power to the power adapter comprises solar energy or a communication room-48V.
Preferably, the microprocessor is connected with the surge protector through an ADC interface.
Preferably, the WEB server is connected with the NB-IOT module through a TCP/UDP protocol.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a power cable leakage detection system, which comprises a power adapter, a leakage detector connected with the power adapter, and a WEB server connected with the leakage detector; adopt the cooperation of power adapter, leakage detector and WEB server effectively avoids the electric shock accident that the electric leakage caused, accomplishes real-time, initiative discovery because the damaged electric leakage of cable leads to the electrified hidden danger of steel strand wires, pole guy wire to in time get rid of the renovation.
The utility model provides a leakage detector has integrateed surge protection function, leakage voltage and has detected function, charactron display function, and the internet communication function and the 485 communication function of NB-IOT module can be timely, the efficient makes the processing to the cable electric leakage condition.
The surge protector is mainly used for limiting overvoltage and releasing surge current, and when spike current or voltage is suddenly generated in an electric loop or a communication line due to external interference, the surge protector can be conducted and shunted in a very short time, so that damage of surge to other equipment in the loop is avoided.
The DC-DC converter is arranged to perform voltage reduction processing on a power supply; the miniature transformer is used for isolating front and rear stage circuits and avoiding interference among different power supplies. And the DC-DC converter is matched with the small transformer to process a power supply, so that the power supply is provided for the use of the leakage detector.
The WEB server is arranged, so that automatic remote electric leakage monitoring is realized, and electric leakage conditions can be fed back to workers in time. And for the generated leakage information, a WEB server monitoring voice reminding module is used for reminding a monitoring person on duty, and a GSM warning short message informing module is used for reminding a region maintenance responsible person synchronously, so that the discovered hidden danger can be checked and remedied in time.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below 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 the utility model discloses in a power cable leakage detection system's schematic structure view.
Fig. 2 is a schematic diagram of the structure of the connection of the middle leakage detector of the present invention.
Reference numerals are as follows: 1-leakage detector, 2-nixie tube, 3-power adapter, 4-power supply, 5-cable, 6-first detection line, 7-first detection point, 8-second detection line, 9-second detection point, 10-communication line, 11-microprocessor, 12-NB-IOT module, 13-surge protector, 14-WEB server, 15-divider resistor, 16-half-wave rectifier, 18-piezoresistor, 19-gas discharge tube, 20-earth and 21-system ground.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below clearly and completely, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a power cable electric leakage detection system, refer to fig. 1 and fig. 2 for whether there is electric leakage phenomenon in detection cable 5. The electric leakage detection system comprises a power adapter 3, an electric leakage detector 1 connected with the power adapter 3, and a WEB server 14 connected with the electric leakage detector 1. Adopt the cooperation of the three of power adapter 3, leakage detector 1 and WEB server 14 effectively avoids the electric shock accident that the electric leakage caused, accomplishes real-time, active discovery because the damaged electric leakage of cable 5 leads to the electrified hidden danger of steel strand wires, pole guy wire to in time get rid of the renovation.
The power adapter 3 includes a DC-DC converter connected to a power supply, and a small-sized transformer connected to the DC-DC converter. The DC-DC converter is used for reducing the voltage of the power supply 4 connected with the DC-DC converter and supplying the voltage to the leakage detector 1 for use; one end of the small transformer is connected with the DC-DC converter, and the other end of the small transformer is connected with the leakage detector 1, so that front and rear stage circuits are isolated, and interference among different power supplies is avoided.
The power supply for supplying power to the power adapter 3 comprises solar energy or a communication machine room of-48V. Specifically, in this embodiment, the power supply supplied by the power adapter 3 is supplied by a communication room-48V, the power supply 4 supplied by the communication room-48V is stepped down by the DC-DC converter to obtain a-5V power supply, and then the front-stage and rear-stage circuits are isolated by the small transformer, and finally a +5V power supply is output as the power supply of the leakage detector 1.
The leakage detector 1 comprises a microprocessor 11, a surge protector 13 connected with the microprocessor 11, and a first detection line 6 and a second detection line 8 which are respectively connected with the surge protector 13; the nixie tube 2 is connected with the microprocessor 11 and used for displaying detection voltage, and the NB-IOT module 12 is connected with the microprocessor 11 through a serial port and used for transmitting data. The leakage detector 1 integrates a surge protection function, a leakage voltage detection function, a nixie tube display function, an NB-IOT module internet communication function and a 485 communication function.
The leakage detector 1 is also connected with a communication line 10, and the communication line 10 is an RS485 communication line; the nixie tube 2 is two groups of seven-segment nixie tubes and can be respectively used for displaying the leakage voltage of the first detection point 7 and the leakage voltage of the second detection point 9.
The microprocessor 11 is connected with the surge protector 13 through an ADC interface; the WEB server 14 is also connected with the NB-IOT module 12 through a TCP/UDP protocol.
The WEB server 14 includes a monitoring voice reminding module for sending out a leakage information reminding, and a GSM warning short message notification module. The WEB server 14 is electrically connected with the microprocessor 11; the microprocessor 11 sends an instruction to the WEB server 14, the WEB server 14 controls the monitoring voice reminding module to send out a voice prompt and controls the GSM warning short message notification module to send out a warning short message; the WEB server 14 is arranged to monitor whether the leakage condition occurs in real time, and for the leakage information, the WEB server 14 controls the monitoring voice reminding module to remind monitoring operators on duty, and synchronously notifies the module to remind region maintenance personnel through the GSM warning short message, so that the timely reporting processing of the leakage condition is ensured.
Specifically, the surge protector 13 includes a varistor 18, and a gas discharge tube 19 connected in series with the varistor 18; the piezoresistor 18 and the gas discharge tube 19 are connected in series to form a surge protection circuit. In this embodiment, the gas discharge tube 19 is a GPT gas discharge tube, model 2RF600L-8; the model number of the piezoresistor 18 is 20D681KJ. The gas discharge tube 19 can effectively eliminate the leakage current of the piezoresistor 18, avoid a large amount of leakage current from flowing through the piezoresistor 18, and effectively ensure the safety and reliability of the circuit. In the absence of overvoltage, the resistances of said varistors 18 are all very high, generally of the order of megaohms, almost equivalent to an open circuit; when overvoltage occurs, the impedance is rapidly reduced to a few ohms, and surge current flows in through the surge protection circuit and cannot enter the subsequent equipment, so that the subsequent circuit is prevented from being damaged. At the moment, the impedance of the surge protector 13 is very small, the voltage at two ends of the surge protector is also relatively small, and meanwhile, because the surge protection circuit is connected with the microprocessor 11 in parallel, equipment does not need to bear large surge voltage, so that the effects of current leakage and voltage limitation are achieved.
The surge protector 13 is also connected with a voltage dividing resistor 15 and a half-wave rectifier 16 in parallel. Specifically, when the device is used, alternating current voltage (AC 0-400V) to be detected is rectified into direct current voltage (DC 0-200V) through the half-wave rectifier 16, then the direct current voltage is divided by the voltage dividing resistor 15 and sent to an ADC interface of the microprocessor 11, and the voltage range after voltage division by the voltage dividing resistor 15 is 0-2.5V. In the present embodiment, the half-wave rectifier 16 is a rectifying diode. At the same time, the surge protector 13 is connected to the ground 20 and the system ground 21 through wires, so that the reference potential can be ensured to be equal, and the voltage read by the ADC is accurate.
The surge protector 13 is mainly used for limiting overvoltage and discharging surge current, and in an electric loop or a communication line, when external interference suddenly generates peak current or voltage, the surge protector 13 can be turned on and shunted within a very short time, so that damage of surge to other equipment in the loop is avoided.
Specifically, when the leakage detector 1 is used, the surge protectors 13 are respectively and correspondingly connected to one side ends of the first detection line 6 and the second detection line 8; the other side ends of the first detection line 6 and the second detection line 8 are respectively connected with a first detection point 7 and a second detection point 9, and in this embodiment, the first detection point 7 and the second detection point 9 are steel strands. The alternating voltage to be detected is rectified into direct voltage by the half-wave rectifier 16, and then is sent to the ADC interface of the microprocessor 11 after voltage division. In this embodiment, the microprocessor 11 employs STC8H3K64S4. The microprocessor 11 reads the input voltage value according to the ADC interface, and calculates the actual voltage values of the first detection point 7 and the second detection point 9. And finally, respectively displaying the leakage voltage of the first detection point 7 and the leakage voltage of the second detection point 9 through the nixie tube 2, and refreshing the nixie tube 2 once every 2 seconds. Meanwhile, the microprocessor 11 transmits data to the NB-IOT module 12 through a serial port for processing, and after the NB-IOT module 12 completes processing, transmits the processed data to the WEB server 14 through the TCP/UDP protocol, and transmits the processed data twice in total. After the device information and the detected leakage voltage value are sent to the WEB server 14 twice, if the first detection point 7 and the second detection point 9 do not detect the leakage voltage, the microprocessor 11 sends an instruction to the WEB server 14 after a timer electrically connected with the microprocessor 11 times a preset time. In the process, if it is detected that the voltage of the first detection point 7 or the second detection point 9 exceeds 4V, the microprocessor 11 sends an instruction to the timer, after timing again for 10 seconds, the microprocessor 11 sends an instruction to the WEB server 14, the WEB server 14 controls the monitoring voice reminding module and the GSM warning short message notification module to send out the data of "the first detection point 7 or the second detection point 9 has electric leakage", then the microprocessor 11 sends an instruction for timing again for a preset time to the timer, and after the preset time is reached, the microprocessor 11 repeats the above operations to send data again, so that frequent reminding can be avoided, and after the electric leakage fault is processed, that is, when the electric leakage detector 1 detects that the voltages of the first detection point 7 and the second detection point 9 are less than 4V, the microprocessor 11 sends an instruction to the timer, and after the preset time is reached, the microprocessor 11 sends an instruction to the WEB server 14.
Specifically, whether the setting of WEB server 14 can real-time supervision electric leakage condition takes place, to the electric leakage information that takes place, through WEB server 14 control monitoring pronunciation reminds the module to remind the personnel on duty of monitoring, passes through in step GSM reports an emergency and asks for help or increased vigilance the short message notice module and reminds the area to maintain the person in charge. The data uploaded by the leakage detector 1 to the WEB server 14 includes device codes, alarm category codes, message parsing, detection point positions, detection values, detection time, and original messages. When the electric leakage phenomenon occurs, the WEB server 14 may have an alarm record, and the content of the alarm record includes an equipment name, a point location name, a region maintenance responsible person, a detection value, an alarm threshold value, time, and a short message transmission. And correspondingly controlling a monitoring voice reminding module to remind monitoring operators on duty through the WEB server 14 according to the alarm records, and synchronously reminding area maintenance responsible persons to maintain through the GSM alarm short message notification module. The content of the warning short message is, for example: a certain area of esteem maintains a site for the responsible person, your management: somewhere (solar powered), there is an alarm of exceeding the threshold, the alarm value is 242.0V, please handle as soon as possible.
It is right above the utility model provides a power cable leakage detection system has carried out detailed introduction, and it is right to have used specific individual example here the utility model discloses a structure and theory of operation have explained, and the description of above embodiment is only used for helping to understand the utility model discloses a method and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. A power cable leakage detection system is characterized by comprising a power adapter, a leakage detector connected with the power adapter, and a WEB server connected with the leakage detector;
the power adapter comprises a DC-DC converter connected with a power supply and a small transformer connected with the DC-DC converter;
the leakage detector comprises a microprocessor, a surge protector connected with the microprocessor, a first detection line and a second detection line which are respectively connected with the surge protector, a nixie tube connected with the microprocessor, and an NB-IOT module connected with the microprocessor through a serial port;
the WEB server comprises a monitoring voice reminding module and a GSM warning short message notification module.
2. A power cable leakage detection system according to claim 1, wherein said surge protector comprises a varistor and a gas discharge tube in series with said varistor.
3. A power cable leakage detection system according to claim 2, wherein a voltage dividing resistor and a half-wave rectifier are connected in parallel to said surge protector.
4. A power cable leakage detection system according to claim 2, wherein said surge protector is further connected to earth ground and system ground.
5. A power cable leakage detection system according to any of claims 1-4, wherein a communication line is connected to the leakage detector.
6. A power cable leakage detection system according to any of claims 1-4, wherein the power supply for supplying power to said power adapter comprises solar power, or a communication room-48V.
7. A power cable leakage detection system according to claim 1, wherein said microprocessor is connected to said surge protector via an ADC interface.
8. A power cable leakage detection system according to claim 1, wherein the WEB server is connected to the NB-IOT module via TCP/UDP protocol.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222848458.5U CN218158290U (en) | 2022-10-28 | 2022-10-28 | Power cable leakage detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222848458.5U CN218158290U (en) | 2022-10-28 | 2022-10-28 | Power cable leakage detection system |
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| CN218158290U true CN218158290U (en) | 2022-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116008863A (en) * | 2023-03-27 | 2023-04-25 | 云南华晟电力器材有限公司 | Electric iron tower electric leakage detection device with safeguard function |
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- 2022-10-28 CN CN202222848458.5U patent/CN218158290U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116008863A (en) * | 2023-03-27 | 2023-04-25 | 云南华晟电力器材有限公司 | Electric iron tower electric leakage detection device with safeguard function |
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