CN205881124U - Electric power grounding wire's anti -misoperation system - Google Patents

Abstract

The utility model discloses an electric power grounding wire's anti -misoperation system, report to the police and ground state detecting system including the circuit is electrified, whether monopole directional aerial electric field detects and deposits the electrified state of circuit and earth connection dismantlement in -process based on the ground state detecting system of return circuit detection technique and still have the earth connection and detect, and the electrified state of the circuit of surveying is judged according to monopole directional aerial received signal's intensity by the system, and when discovering the circuit electrification, the system sends sound and light warning signal, indicates the dimension personnel that transport to take care, when the power line overhaul to finish to demolish the ground wire, use this system overlap joint and tried the circuit, whether still connect the ground wire on can judging the circuit according to the loop method, avoid taking the emergence of ground wire combined floodgate accident, take electrified warning of electrical detection circuitry and ground state to detect two functional modules, detection achievement is independently accomplished in two module mutual independence work, each other does not influence, and the result is reliably accurate, has improved the security performance.

Description

A kind of anti-misoperation system of electricity earthing cable

Technical field

This utility model relates to a kind of earth lead security system, is specifically related to the anti-misoperation system of a kind of electricity earthing cable System.

Background technology

Short-circuit grounding wire is that a kind of safety that power industry is to be mounted before equipment or the laggard row of circuit power-off overhaul is short Road device, is used for preventing the safety protective tools stopping to damage operator or equipment of sending a telegram here suddenly.This device is In strict accordance with the safety appliance of State Grid's industry DL/T879-2004 " portable short-circuit grounding wire technical stipulation ", at electric power row Industry belongs to managing security tools and instruments category.Construction earth lead forms by earth terminal, earth lead with by the clamping plate of spring.Outside earth lead Skin has insulating barrier, and when bumping against with wire, the spring effect clamp in clamping plate clamps wire automatically, first will construction earth lead one end Being fastened on grounding body with bolt, the clamping plate of clamp are opened, a good latch plate, the portable earth lead of operator makes clamp be directed at Needing wire or the aerial earth wire of ground connection, bump against back clamp and clamp wire or ground wire, during removal, first extract clamping plate, last loose unloading connects Ground bolt.

Short-circuit grounding wire is one of safety appliance the most frequently used in power generation, and repair apparatus ground connection is also to ensure that safety One of the technical measures produced, the ground line configuration of prior art is very simple, uses history existing decades, but time so far Day, the pernicious misoperation fault that the operation of mounting ground causes but happens occasionally, it is seen that the earth lead of prior art exists room for improvement, How by this for earth lead common safety appliance real safety in use, it it is the research weight of electric power safety utensil from now on Point, is also the developing direction of safety utensil.

Along with in-depth and the progress of technology of anti-misoperation management system, power industry misoperation fault declines, so year by year And the pernicious misoperation fault of live connection of ground wire almost often has generation every year.Live connection of ground wire had both caused serious device damage Also result in and serious personal injury, but this problem is so far still without the solution of technological layer.To this end, develop one The scheme being stopped live ground wiring by technological means just seems particularly necessary.

Utility model content

The purpose of this utility model is to provide the anti-misoperation system of a kind of electricity earthing cable, solves to hold in prior art Easily have that hot line job is dangerous, whether earth lead is the unclear problem of last root, reach to improve the purpose of security performance.

This utility model is achieved through the following technical solutions:

The anti-misoperation system of a kind of electricity earthing cable, including circuit band electric alarm and ground state detecting system, wherein Circuit band electric alarm includes:

One pole beam antenna: the electric field intensity around induction module, and the power frequency component detected is delivered to live detection Circuit；

Electrified detection circuit: after being processed by the power frequency component received, by audible-visual annunciator alarm indicator circuit The most charged；

Ground state detecting system includes:

Bond end: on the line, the detection signal as detected circuit transmits to ground state testing circuit overlap joint；

Ground state testing circuit: the detection signal that will receive, when detected circuit exists earth lead, by luminescence Diode D1 and loudspeaker are reported to the police.

This utility model uses the detection of one pole beam antenna electric field and ground state based on loop detection technique to detect system Whether unite and there is also earth lead to depositing in the electriferous state of circuit and earth lead unloading process detect, system is fixed according to one pole Intensity to antenna received signal judges the electriferous state of institute's slowdown monitoring circuit, and when finding that circuit is charged, system sends acousto-optic report Alert signal, prompting operation maintenance personnel is taken care；When electric lines of force maintenance terminates to remove ground wire, application native system overlaps tested line Road, can judge the most still to be connected on circuit ground wire according to loop method, it is to avoid the generation of switching on earth wire accident；Electrified detection circuit Band electric alarm and ground state two functional modules of detection, two modules work independently from each other, complete independently detection work, the most not Impact, result accurately and reliably, improves security performance.

Concretely, described electrified detection circuit includes that base series resistor R1 of audion Q1, audion Q1 connects To one pole beam antenna, the emitter stage of audion Q1 is connected to power supply VCC, collector series resistance R4 of audion Q1, resistance R5 is connected to NAND gate UA1, and NAND gate UA1 is connected serially to NAND gate UA2, connects after outfan series resistance R7 of NAND gate UA2 To the base stage of audion Q2, the grounded emitter of audion Q2；The colelctor electrode of audion Q2 is connected to loudspeaker LB；Meanwhile, with non- The outfan of door UA2 is connected to an input of NAND gate UA3, another input series resistance R8, electricity of NAND gate UA3 Resistance R9 is connected to two inputs of NAND gate UA4, and the outfan of NAND gate UA3 is also connected to two of NAND gate UA4 simultaneously Input, outfan series resistance R10 of NAND gate UA4 is connected to the base stage of audion Q3, the grounded emitter of audion Q3, The colelctor electrode of audion Q3 it is connected to after power supply VCC series resistance R11, light emitting diode D1.When module surrounding electric field is the most weak i.e. When being substantially at zero potential, the ac voltage signal obtained by one pole beam antenna is the most substantially zeroed, now by resistance R1 With the half that audion Q1 base stage input voltage is supply voltage VCC obtained by R2 dividing potential drop, this be not enough to drive audion Q1, Now the emitter voltage of audion is zero, and the level exported through NAND gate UA1 and NAND gate UA2 is low level, it is impossible to drive Dynamic Q2, now loudspeaker LB does not rings, and is input simultaneously to No. 2 pin level of NAND gate UA3 also for low level, No. 3 foot output levels For high level, after NAND gate UA4, output signal becomes low level, it is impossible to driving audion Q3, now light emitting diode D1 is not Luminous, it can be seen that when being in zero electric field, not send corresponding warning message；When module surrounding electric field signal becomes big, pass through The ac voltage signal that one pole beam antenna obtains also becomes big, and now applied signal voltage and line alternating current pressure are with frequently, due to The signal of input is AC signal, three poles when voltage signal is in positive half cycle, obtained by making by resistance R1 and R2 dividing potential drop Pipe Q1 base stage input voltage signal is raised, and along with the change of input end signal uprises greatly, thus stop the conducting of audion Q1, Time system be in not alarm condition, but when input voltage signal is in negative half period, make by resistance R1 and R2 dividing potential drop gained To audion Q1 base stage input voltage signal diminish, and the step-down along with the change of input end signal is big, thus promote audion The conducting of Q1, now the emitter stage level signal of audion Q1 is high level, by the low-pass filter circuit pair of R4 and C1 composition High-frequency signal is filtered, and increases the capacity of resisting disturbance of system external circle high-frequency signal, through NAND gate UA1 and NAND gate UA2 The level of output is high level, drives audion Q2, and now loudspeaker LB sends alarm sound, is input simultaneously to the 2 of NAND gate UA3 Number pin level is also high level, and No. 3 foot output levels are low level, and after NAND gate UA4, output signal becomes high level, drives Dynamic audion Q3, now light emitting diode D1 is luminous, it can be seen that, when module is in high AC field, send corresponding report Alarming information, additionally, this module also has self-checking function, utilizes switch S1 to be controlled, when switching S1 Guan Bi, now drives three Pole pipe Q1, makes audion Q1 turn on, and now the emitter stage level signal of audion Q1 is high level, through NAND gate UA1 and with The level of not gate UA2 output is high level, drives audion Q2, and now loudspeaker LB sends alarm sound, is input simultaneously to non- No. 2 pin level of door UA3 are also high level, and No. 3 foot output levels are low level, and after NAND gate UA4, output signal becomes High level, drives audion Q3, and now light emitting diode D1 is luminous, is achieved in the self-inspection to warning circuit.

The colelctor electrode of audion Q1 is also associated with resistance R3 and electric capacity C1 and constitutes filter circuit；The outfan of NAND gate UA2 Connect and have resistance R6 and electric capacity C2 to constitute filtering；Power supply VCC is connected to loudspeaker LB after resistance R12 and electric capacity C4 filters.Single According to early warning, electric field intensity around level antenna induction module, requires that the power frequency component collecting antenna is amplified and filters Ripple, when signal reaches to a certain degree, driven for emitting lights diode and buzzer carry out sound and light alarm, utilize simultaneously R8, R9, C3, The oscillating circuit of 4011C and 4011D composition makes light emitting diode send the light of flicker, and prompting user has been enter into electrification in high voltage Region.

Include boost chip CHIP2 at described ground state testing circuit, the pin Vbatt of boost chip CHIP2 and Pin SHND is connected to power supply VCC, simultaneously power supply VCC also by inductance L be connected simultaneously to boost chip CHIP2 pin LX, The pin A of chip BT2, is connected to flash lamp A5 after output pin Vout series resistance R21 of boost chip CHIP2, simultaneously electricity Resistance R21 series resistance R32 again is connected to loudspeaker A2；Flash lamp A5, loudspeaker A2 are connected to bond end H3.Ground state is utilized to examine The metal contact jaw of slowdown monitoring circuit contacts with circuit, when this circuit also hangs with other earth leads, and now ground state detection Circuit and this earth lead constitute loop, send corresponding warning message, on the contrary no ground line, and system will not send corresponding announcement Alarming information, this illustrates that this earth lead is last root earth lead, thus plays the electric power accident preventing line with ground combined floodgate from causing Purpose.

Described power supply VCC passes through electric capacity C21 ground connection, and the output pin Vout of boost chip CHIP2 is connect by electric capacity C23 Ground, flash lamp A5 passes through electric capacity C22 ground connection.

This utility model compared with prior art, has such advantages as and beneficial effect:

The anti-misoperation system of a kind of electricity earthing cable of this utility model use the detection of one pole beam antenna electric field and based on Whether the ground state detecting system of loop detection technique to depositing in the electriferous state of circuit and earth lead unloading process there is also Earth lead detects, and system judges the electriferous state of institute's slowdown monitoring circuit according to the intensity of one pole beam antenna received signal, when Finding when circuit is charged, system sends sound and light alarm signal, and prompting operation maintenance personnel is taken care；When electric lines of force maintenance terminates to remove During ground wire, application native system overlaps tested circuit, can judge the most still to be connected on circuit ground wire according to loop method, it is to avoid band ground wire The generation of combined floodgate accident；Electrified detection circuit band electric alarm and ground state two functional modules of detection, two modules are the most only Vertical work, complete independently detection work, it is independent of each other, result accurately and reliably, improves security performance.

Accompanying drawing explanation

Accompanying drawing described herein is used for providing being further appreciated by this utility model embodiment, constitutes the one of the application Part, is not intended that the restriction to this utility model embodiment.In the accompanying drawings:

Fig. 1 is the view after this utility model electrified detection circuit half-twist counterclockwise；

Fig. 2 is this utility model ground state testing circuit.

Detailed description of the invention

For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, The utility model is described in further detail, and exemplary embodiment of the present utility model and explanation thereof are only used for explaining this Utility model, is not intended as restriction of the present utility model.

Embodiment

If Fig. 1 is to shown in 2, the anti-misoperation system of a kind of electricity earthing cable of this utility model, a kind of electricity earthing cable Anti-misoperation system, including circuit band electric alarm and ground state detecting system, wherein circuit band electric alarm includes: one pole orients Antenna: the electric field intensity around induction module, and the power frequency component detected is delivered to electrified detection circuit；Electrified detection circuit Including audion Q1, base series resistor R1 of audion Q1 is connected to one pole beam antenna, and the emitter stage of audion Q1 connects To power supply VCC, collector series resistance R4 of audion Q1, resistance R5 are connected to NAND gate UA1, NAND gate UA1 be connected serially to Not gate UA2, is connected to the base stage of audion Q2 after outfan series resistance R7 of NAND gate UA2, the emitter stage of audion Q2 connects Ground；The colelctor electrode of audion Q2 is connected to loudspeaker LB；Meanwhile, to be connected to of NAND gate UA3 defeated for the outfan of NAND gate UA2 Entering end, another input series resistance R8 of NAND gate UA3, resistance R9 are connected to two inputs of NAND gate UA4, simultaneously The outfan of NAND gate UA3 is also connected to two inputs of NAND gate UA4, and outfan series resistance R10 of NAND gate UA4 is even It is connected to the base stage of audion Q3, the grounded emitter of audion Q3, connects after power supply VCC series resistance R11, light emitting diode D1 Colelctor electrode to audion Q3.When module surrounding electric field is the most weak be i.e. substantially at zero potential time, obtained by one pole beam antenna Ac voltage signal the most substantially zeroed, now by the audion Q1 base stage input voltage obtained by resistance R1 and R2 dividing potential drop be The half of supply voltage VCC, this be not enough to drive audion Q1, now the emitter voltage of audion is zero, through NAND gate The level of UA1 and the output of NAND gate UA2 is low level, it is impossible to driving Q2, now loudspeaker LB does not rings, and is input simultaneously to NAND gate No. 2 pin level of UA3 are also low level, and No. 3 foot output levels are high level, and after NAND gate UA4, output signal becomes low Level, it is impossible to driving audion Q3, now light emitting diode D1 is the most luminous, it can be seen that when being in zero electric field, does not send corresponding Warning message；When module surrounding electric field signal becomes big, the ac voltage signal obtained by one pole beam antenna also becomes big, Now applied signal voltage and line alternating current pressure are with frequency, owing to the signal of input is AC signal, when voltage signal is just in During half cycle, the audion Q1 base stage input voltage signal obtained by making by resistance R1 and R2 dividing potential drop is raised, and along with input The change of signal is big and uprises, thus stops the conducting of audion Q1, time system be in not alarm condition, but when input voltage is believed When number being in negative half period, the audion Q1 base stage input voltage signal obtained by making by resistance R1 and R2 dividing potential drop diminishes, and with The change step-down greatly of input end signal, thus promote the conducting of audion Q1, the now emitter stage level signal of audion Q1 For high level, by the low-pass filter circuit of R4 and C1 composition, high-frequency signal is filtered, increases system external circle high frequency letter Number capacity of resisting disturbance, the level exported through NAND gate UA1 and NAND gate UA2 is high level, drives audion Q2, now loudspeaker LB sends alarm sound, and No. 2 pin level being input simultaneously to NAND gate UA3 are also high level, and No. 3 foot output levels are low Level, after NAND gate UA4, output signal becomes high level, drives audion Q3, and now light emitting diode D1 is luminous, thus may be used See, when module is in high AC field, send corresponding warning message, the colelctor electrode of audion Q1 be also associated with resistance R3 and Electric capacity C1 constitutes filter circuit；The outfan of NAND gate UA2 connects has resistance R6 and electric capacity C2 to constitute filtering；Power supply VCC passes through It is connected to loudspeaker LB after resistance R12 and electric capacity C4 filtering.Electric field intensity around monopole antenna induction module, according to early warning requirement The power frequency component collecting antenna is amplified and filters, driven for emitting lights diode and honeybee when signal reaches to a certain degree Ring device carries out sound and light alarm, and the oscillating circuit simultaneously utilizing R8, R9, C3,4011C and 4011D to form makes light emitting diode send The light of flicker, prompting user has been enter into electrification in high voltage region, additionally, this module also has self-checking function, utilizes switch S1 It is controlled, when switching S1 Guan Bi, now drives audion Q1, make audion Q1 turn on, now the emitter stage of audion Q1 Level signal is high level, and the level exported through NAND gate UA1 and NAND gate UA2 is high level, drives audion Q2, now Loudspeaker LB sends alarm sound, and No. 2 pin level being input simultaneously to NAND gate UA3 are also high level, and No. 3 foot output levels are Low level, after NAND gate UA4, output signal becomes high level, drives audion Q3, and now light emitting diode D1 is luminous, thus Realize the self-inspection to warning circuit；Ground state detecting system includes: bond end: overlap on the line, as detected circuit Detection signal transmit to ground state testing circuit；Ground state testing circuit includes boost chip CHIP2, boost chip The pin Vbatt and pin SHND of CHIP2 is connected to power supply VCC, and power supply VCC is connected simultaneously to boosting also by inductance L simultaneously The pin LX of chip CHIP2, the pin A of chip BT2, connect after output pin Vout series resistance R21 of boost chip CHIP2 To flash lamp A5, resistance R21 series resistance R32 again is connected to loudspeaker A2 simultaneously；Flash lamp A5, loudspeaker A2 are connected to bond end H3, power supply VCC pass through electric capacity C21 ground connection, and the output pin Vout of boost chip CHIP2 passes through electric capacity C23 ground connection, flash lamp A5 By electric capacity C22 ground connection.The metal contact jaw utilizing ground state testing circuit contacts with circuit, when this circuit also hangs with During other earth leads, now ground state testing circuit and this earth lead constitute loop, send corresponding warning message, otherwise No ground line, system will not send corresponding warning information, and this illustrates that this earth lead is last root earth lead, thus plays anti- The purpose of the electric power accident that leukorrhagia stopping earth lead combined floodgate causes.

Above-described detailed description of the invention, is entered the purpose of this utility model, technical scheme and beneficial effect One step describes in detail, be it should be understood that and the foregoing is only detailed description of the invention of the present utility model, is not used to limit Fixed protection domain of the present utility model, all within spirit of the present utility model and principle, any amendment, the equivalent made are replaced Change, improvement etc., within should be included in protection domain of the present utility model.

Claims (5)

1. the anti-misoperation system of an electricity earthing cable, it is characterised in that: include circuit band electric alarm and ground state detection System, wherein circuit band electric alarm includes:

One pole beam antenna: the electric field intensity around induction module, and the power frequency component detected is delivered to electrified detection circuit；

Electrified detection circuit: after the power frequency component received is processed, by audible-visual annunciator alarm indicator circuit whether Charged；

Ground state detecting system includes:

Bond end: on the line, the detection signal as detected circuit transmits to ground state testing circuit overlap joint；

Ground state testing circuit: the detection signal that will receive, when detected circuit exists earth lead, passes through light-emitting diodes Pipe D1 and loudspeaker are reported to the police.

The anti-misoperation system of a kind of electricity earthing cable the most according to claim 1, it is characterised in that described band electric-examination Slowdown monitoring circuit includes that audion Q1, base series resistor R1 of audion Q1 are connected to one pole beam antenna, the transmitting of audion Q1 Pole is connected to power supply VCC, and collector series resistance R4 of audion Q1, resistance R5 are connected to NAND gate UA1, and NAND gate UA1 is gone here and there Being coupled to NAND gate UA2, be connected to the base stage of audion Q2 after outfan series resistance R7 of NAND gate UA2, audion Q2 sends out Emitter grounding；The colelctor electrode of audion Q2 is connected to loudspeaker LB；Meanwhile, the outfan of NAND gate UA2 is connected to NAND gate UA3 One input, another input series resistance R8 of NAND gate UA3, resistance R9 are connected to two inputs of NAND gate UA4 End, the outfan of NAND gate UA3 is also connected to two inputs of NAND gate UA4, the outfan series electrical of NAND gate UA4 simultaneously Resistance R10 is connected to the base stage of audion Q3, the grounded emitter of audion Q3, power supply VCC series resistance R11, light emitting diode The colelctor electrode of audion Q3 it is connected to after D1.

The anti-misoperation system of a kind of electricity earthing cable the most according to claim 2, it is characterised in that: the collection of audion Q1 Electrode is also associated with resistance R3 and electric capacity C1 and constitutes filter circuit；The outfan of NAND gate UA2 connects resistance R6 and electric capacity C2 Constitute filtering；Power supply VCC is connected to loudspeaker LB after resistance R12 and electric capacity C4 filters.

The anti-misoperation system of a kind of electricity earthing cable the most according to claim 1, it is characterised in that: described ground connection State detection circuit includes boost chip CHIP2, and the pin Vbatt and pin SHND of boost chip CHIP2 are connected to power supply VCC, power supply VCC is connected simultaneously to the pin A of the pin LX of boost chip CHIP2, chip BT2 also by inductance L simultaneously, boosting Being connected to flash lamp A5 after output pin Vout series resistance R21 of chip CHIP2, resistance R21 series resistance R32 again is even simultaneously It is connected to loudspeaker A2；Flash lamp A5, loudspeaker A2 are connected to bond end H3.

The anti-misoperation system of a kind of electricity earthing cable the most according to claim 1, it is characterised in that: described power supply VCC passes through electric capacity C21 ground connection, and the output pin Vout of boost chip CHIP2 passes through electric capacity C23 ground connection, and flash lamp A5 is by electricity Hold C22 ground connection.