CN213875829U - Passive live indicating device applied to medium-voltage cable connector - Google Patents
Passive live indicating device applied to medium-voltage cable connector Download PDFInfo
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- CN213875829U CN213875829U CN202022911241.5U CN202022911241U CN213875829U CN 213875829 U CN213875829 U CN 213875829U CN 202022911241 U CN202022911241 U CN 202022911241U CN 213875829 U CN213875829 U CN 213875829U
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Abstract
The utility model discloses a be applied to passive electrified indicating device of medium voltage cable connector, including the current-carrying wire, the polyester insulation layer is established to the outside package of current-carrying wire, the outside package of polyester insulation layer is equipped with the film copper ring, the outside of film copper ring is through insulating connecting piece fixedly connected with casting shell, be provided with air insulation layer between film copper ring and the casting shell, the outside of film copper ring has electrode A and gets the electric tie point, the outside of casting shell has electrode B and gets the electric tie point. The utility model discloses in, through installing energy management circuit on cable junction head, whether glimmering according to it is luminous, judge whether the cable conductor in the cable junction head is electrified, this process need not fortune dimension personnel and carries the electricity testing stick and tests the electricity operation, simplifies fortune dimension process, can conveniently operate maintainer safety operation to, the detection has the real-time, can be at cable normal operating in-process, plays the warning effect to the pedestrian who passes by.
Description
Technical Field
The utility model relates to a power line operation maintenance technical field especially relates to a be applied to passive electrified indicating device of middling pressure cable connector.
Background
China strictly stipulates the safety distance for the operation on the power line according to different voltage grades. But even within a safe distance, the theoretically safe distance, as well as weather and environmental factors, may change the safe distance. And with the improvement of the voltage of the power transmission line, the ground transverse electric field intensity near the power transmission line is increased, and once any fault occurs, irreparable influence can be caused on an operator. When the power line is in power failure maintenance, due to the electromagnetic coupling and electrostatic coupling effects of the parallel, adjacent, cross-spanning or same-tower erection and other electrified equipment, induced voltage and induced current can be generated on the power failure equipment, and the personal safety of operating personnel is seriously threatened.
Cable line faults are mainly caused by the position of a cable connector, so that the detection of whether a line at the position of the cable connector is electrified is an important step in the line fault processing process. The traditional detection method mainly carries out electricity testing by carrying an electricity testing rod, or judges whether a line is electrified or not by installing an electrified indicator in a power box type transformer substation, and a device which can directly judge whether the position to be overhauled or close to the cable connector is electrified or not in real time is not provided, so that some problems still exist in the implementation process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the problems, a passive live indicating device applied to a medium-voltage cable connector is provided.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a be applied to passive electrified indicating device of medium voltage cable connector, includes current-carrying wire, polyester insulation layer is established to current-carrying wire's outside package, polyester insulation layer's outside package is equipped with the film copper ring, the outside of film copper ring is through insulating connecting piece fixedly connected with casting shell, be provided with air insulation layer between film copper ring and the casting shell, the outside of film copper ring has electrode A and gets the electric tie point, the outside of casting shell has electrode B to get the electric tie point, the externally mounted of casting shell has energy management circuit, two circuit ends of energy management circuit get electric tie point and electrode B with electrode A respectively and get electric tie point electric connection, energy management circuit's externally mounted has the neon bulb.
As a further description of the above technical solution:
the energy management circuit consists of an alternating current circuit, an energy storage circuit and a control circuit.
As a further description of the above technical solution:
the alternating current circuit comprises a D2 diode, a D3 diode, a D4 diode and a D5 diode, the energy storage circuit comprises a C1 capacitor, and the control circuit comprises an R1 resistor, an R2 resistor, a Q1 triode and a Q2 triode.
As a further description of the above technical solution:
the output end of the D2 diode is connected with the output end of the D4 diode, one end of a C1 capacitor, the emitter of a Q1 triode and one end of an R1 resistor, the input end of the D2 is connected with the output end of the D3 and an electricity-taking connection point of an electrode B, the input end of the D3 is connected with the input end of the D5, the other end of the C1 capacitor and one end of a neon bulb, the output end of the D5 is connected with the input end of the D4 and the electricity-taking connection point of the electrode A, the collector of the Q1 is connected with the other end of an R1 resistor and the base of the Q2 triode, the base of the Q1 triode is connected with the electricity-taking connection point of the emitter of a Q2 triode and the electrode B, the collector of the Q2 triode is connected with one end of an R2 resistor, and the other end of an R2 resistor is connected with the other end of the neon bulb.
As a further description of the above technical solution:
the resistance values of the R1 resistor and the R2 resistor are 100 kilo-ohm and 100 ohm respectively, the model of the Q1 triode is PNP type, and the model of the Q2 triode is NPN type.
As a further description of the above technical solution:
the inner wall of the film copper ring is tightly attached to the polyester insulating layer.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the method comprises the steps of utilizing a capacitor between a film copper ring of a polyester insulating layer in a cable connector and a connector casting shell to carry out electric field coupling power taking, designing an energy management circuit, storing electric energy obtained by electric field coupling, conducting a discharge circuit diode in the energy management circuit when stored energy reaches a certain voltage value, discharging neon bulbs by the stored energy capacitor, emitting neon bulbs, continuously and circularly charging and discharging along with the stored energy capacitor, judging whether the cable connector is electrified or not according to whether the neon bulbs flicker or not, installing the energy management circuit on the cable connector, judging whether a cable circuit in the cable connector is electrified or not according to whether the neon bulbs flicker or not, and carrying an electricity testing rod by operation and maintenance personnel for electricity testing in the process, thereby simplifying the operation and maintenance process, facilitating the safe operation of operation and maintenance personnel, avoiding mistakenly touching electrified bodies, and further, the detection has real-time performance, and can play a warning role for passers-by in the normal operation process of the cable.
Drawings
Fig. 1 is a schematic diagram illustrating an electrical structure of a passive live indication apparatus according to an embodiment of the present invention;
fig. 2 shows an illustrative schematic diagram of an energy management circuit of a passive live indication device according to an embodiment of the present invention.
Illustration of the drawings:
1. a current carrying wire; 2. a polyester insulating layer; 3. a thin film copper ring; 4. an air insulation layer; 5. casting the shell; 6. an electrode A gets a power connection point; 7. the electrode B gets a power connection point; 8. an insulating connector; 9. an energy management circuit; 10. neon bulbs.
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. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a passive electrification indicating device applied to a medium-voltage cable connector comprises a current-carrying lead 1, a polyester insulating layer 2 is wrapped outside the current-carrying lead 1, a film copper ring 3 is wrapped outside the polyester insulating layer 2, the outside of the film copper ring 3 is fixedly connected with a casting shell 5 through an insulating connecting piece 8, an air insulating layer 4 is arranged between the film copper ring 3 and the casting shell 5, an electrode A electricity-taking connecting point 6 is arranged outside the film copper ring 3, an electrode B electricity-taking connecting point 7 is arranged outside the casting shell 5, an energy management circuit 9 is arranged outside the casting shell 5, two circuit ends of the energy management circuit 9 are respectively electrically connected with the electrode A electricity-taking connecting point 6 and the electrode B electricity-taking connecting point 7, a neon bulb 10 is arranged outside the energy management circuit 9, and the charging and discharging processes are continuously circulated along with an energy storage C1 capacitor in the energy management circuit 9, the phenomenon of neon bulb 10 flickering is realized, so that the circuit can be judged to be electrified; if the neon bulb 10 does not emit light, the circuit is judged to be uncharged.
Specifically, as shown in fig. 2, the energy management circuit 9 includes an ac circuit, an energy storage circuit, and a control circuit, the ac circuit includes a D2 diode, a D3 diode, a D4 diode, and a D5 diode, the energy storage circuit includes a C1 capacitor, the control circuit includes a R1 resistor, a R2 resistor, a Q1 triode, and a Q2 triode, an output terminal of the D2 diode is connected to an output terminal of the D4 diode, one terminal of the C1 capacitor, an emitter terminal of the Q1 triode, and one terminal of the R1 resistor, an input terminal of the D2 is connected to an output terminal of the D3 and a base terminal of the Q1 triode, an input terminal of the D3 is connected to an input terminal of the D5, another terminal of the C1 capacitor, and one terminal of the neon bulb 10, an output terminal of the D5 is connected to an input terminal of the D4 and a power-taking connection point 6, a collector terminal of the Q1 resistor is connected to a base terminal of the Q1 triode, a base terminal of the Q1 transistor is connected to a base terminal of the Q1 and a power-taking connection point 7, the collector of the Q2 triode is connected with one end of the R2 resistor, the other end of the R2 resistor is connected with the other end of the neon bulb 10, the resistance values of the R1 resistor and the R2 resistor are 100 kilo-ohm and 100 ohm respectively, the model of the Q1 triode is PNP type, the model of the Q2 triode is NPN type, and the AC circuit is as follows: the energy management circuit 9 rectifies the absorbed potential difference between the electrode A electricity taking connection point 6 and the electrode B electricity taking connection point 7 to change the alternating voltage into the direct voltage; the energy storage circuit: the direct current voltage rectified by the alternating current circuit charges the capacitor of the energy storage circuit C1; the control circuit: when the capacitor of the energy storage circuit C1 is charged and the voltage of the capacitor of the energy storage circuit C1 enables the control circuit diode to reach the breakover voltage, the neon bulb 10 of the luminous display circuit is discharged by the capacitor of the energy storage circuit C1, the neon bulb 10 is luminous, the capacitor of the energy storage circuit C1 is discharged, the voltage value of the capacitor of the energy storage circuit C1 is reduced, when the voltage value of the capacitor of the energy storage circuit C1 is reduced to be not enough to reach the breakover voltage of the control circuit diode, the capacitor of the energy storage C1 stops discharging the neon bulb 10 of the luminous display circuit, and the neon bulb 10 is extinguished.
Specifically, as shown in fig. 1, the inner wall of the film copper ring 3 is tightly attached to the polyester insulating layer 2, so that the effect of detecting the band point of the current carrying wire 1 is ensured.
The working principle is as follows: during the use, when current-carrying wire 1 is electrified, under current-carrying wire 1 has the state of voltage promptly, because the inhomogeneity of electric field around the wire, electrode A gets electric connection point 6 and electrode B and gets the electric field intensity difference of electric connection point 7 position, electrode A gets electric connection point 6 and electrode B and gets and constitute the potential difference between the electric connection point 7, and this potential difference is absorbed by energy management circuit 9, among the energy management circuit 9:
an alternating current circuit: the energy management circuit 9 rectifies the absorbed potential difference between the electrode A electricity taking connection point 6 and the electrode B electricity taking connection point 7 to change the alternating voltage into the direct voltage;
the energy storage circuit: the direct current voltage rectified by the alternating current circuit charges the capacitor of the energy storage circuit C1;
the control circuit: when the capacitor of the energy storage circuit C1 is charged and the voltage of the capacitor of the energy storage circuit C1 enables the control circuit diode to reach the breakover voltage, the neon bulb 10 of the luminous display circuit is discharged by the capacitor of the energy storage circuit C1, the neon bulb 10 is luminous, the capacitor of the energy storage circuit C1 is discharged, the voltage value of the capacitor of the energy storage circuit C1 is reduced, when the voltage value of the capacitor of the energy storage circuit C1 is reduced to be not enough to reach the breakover voltage of the control circuit diode, the capacitor of the energy storage C1 stops discharging the neon bulb 10 of the luminous display circuit, and the neon bulb 10 is extinguished.
The charging and discharging process is continuously circulated along with the energy storage C1 capacitor, so that the phenomenon of neon bulb 10 flickering and luminescence is realized, and the circuit can be judged to be electrified; if the neon bulb 10 does not emit light, the circuit is judged to be uncharged.
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 (6)
1. The utility model provides a be applied to passive electrified indicating device of medium voltage cable connector, includes current-carrying wire (1), its characterized in that, polyester insulation layer (2) is established to the outside package of current-carrying wire (1), the outside package of polyester insulation layer (2) is equipped with film copper ring (3), the outside of film copper ring (3) is through insulating connecting piece (8) fixedly connected with casting shell (5), be provided with air insulation layer (4) between film copper ring (3) and casting shell (5), the outside of film copper ring (3) has electrode A to get electric connection point (6), the outside of casting shell (5) has electrode B to get electric connection point (7), the externally mounted of casting shell (5) has energy management circuit (9), two circuit terminals of energy management circuit (9) get electric connection point (6) and electrode B with electrode A respectively and get electric connection point (7), a neon bulb (10) is mounted outside the energy management circuit (9).
2. A passive electrification indicating device for medium-voltage cable joints according to claim 1, wherein the energy management circuit (9) comprises an ac circuit, a tank circuit and a control circuit.
3. The passive power indicating device of claim 2, wherein the ac circuit comprises a D2 diode, a D3 diode, a D4 diode and a D5 diode, the tank circuit comprises a C1 capacitor, and the control circuit comprises a R1 resistor, a R2 resistor, a Q1 transistor and a Q2 transistor.
4. A passive power indicating device for a medium voltage cable connector according to claim 3, the output end of the D2 diode is connected with the output end of the D4 diode, one end of a C1 capacitor, the emitter of a Q1 triode and one end of an R1 resistor, the input end of the D2 is connected with the output end of the D3 and the electricity taking connection point (7) of the electrode B, the input end of the D3 is connected with the input end of the D5, the other end of the C1 capacitor and one end of the neon bulb (10), the output end of the D5 is connected with the input end of the D4 and the electricity taking connection point (6) of the electrode A, the collector of the Q1 is connected with the other end of the R1 resistor and the base of the Q2 triode, the base of the Q1 triode is connected with the power-taking connection point (7) of the emitter of the Q2 triode and the electrode B, the collector of the Q2 triode is connected with one end of the R2 resistor, and the other end of the R2 resistor is connected with the other end of the neon bulb (10).
5. The passive power indicating device of claim 4, wherein the R1 resistor and the R2 resistor have resistance values of 100 kilo-ohms and 100 ohms, the Q1 triode type is PNP, and the Q2 triode type is NPN, respectively.
6. The passive electrification indicating device applied to a medium-voltage cable connector according to claim 1, wherein the inner wall of the thin film copper ring (3) is tightly attached to the polyester insulating layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022911241.5U CN213875829U (en) | 2020-12-07 | 2020-12-07 | Passive live indicating device applied to medium-voltage cable connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022911241.5U CN213875829U (en) | 2020-12-07 | 2020-12-07 | Passive live indicating device applied to medium-voltage cable connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213875829U true CN213875829U (en) | 2021-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022911241.5U Active CN213875829U (en) | 2020-12-07 | 2020-12-07 | Passive live indicating device applied to medium-voltage cable connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213875829U (en) |
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2020
- 2020-12-07 CN CN202022911241.5U patent/CN213875829U/en active Active
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