CN208588775U - A kind of split type lightning arrester base Leakage Current on-Line Monitor Device - Google Patents

Abstract

A kind of split type lightning arrester base Leakage Current on-Line Monitor Device; it includes that insulator protects shell 1, insulator to protect the zinc oxide resistance sheet installed inside shell 1; insulator protects 1 bottom of shell to be equipped with insulator foot 2; insulator protects shell 1 to be arranged on basic steel pole by insulator foot 2; including current sensor 4, current sensor 4 is mounted in 2 bottom cavity of insulator foot；Current sensor 4 is connect by communication module 5 with the input terminal of main control module 6, and the output end of the input terminal of main control module 6 is connect with alarm module 7, and the bi-directional data end of main control module 6 is connect with remote monitoring center 8.The utility model is to solve moisture and impurity and often invade inside via the gap between porcelain vase and bolt or between porcelain vase and lightning arrester base, leakage of current is caused to make pedestal insulation resistance be remarkably decreased, security risk is brought, the technical issues of which cannot be found by patrol officer well.

Description

A kind of split type lightning arrester base Leakage Current on-Line Monitor Device

Technical field

The utility model relates to arrester monitoring technical field more particularly to a kind of split type lightning arrester base Leakage Currents On-Line Monitor Device.

Background technique

Metal zinc oxide lightning arrester pedestal is divided into monoblock type and two kinds split type, and split type lightning arrester base is generally by insulating Porcelain vase, insulation sleeve and metal bolts composition, after running a period of time, moisture and impurity often via between porcelain vase and bolt or Gap between porcelain vase and lightning arrester base invades inside, leads to bolt corrosion and filth.And built-in electrical insulation set and porcelain vase also have Since expanding with heat and contract with cold for metal bolts causes to damage.It will appear leakage of current after there is the above problem to make pedestal insulation resistance The problem of being remarkably decreased.Pedestal defective insulation will lead to on-line monitoring total current numerical value it is relatively low, cannot accurately monitor arrester Actual motion state.Meanwhile the defects of also easily causing fracture, breakage, influence the dynamic stability of arrester.

Authorization Notice No. is that the Chinese patent of CN205984482U discloses a kind of metal oxide arrester, it includes sky Core insulation cylinder, the upper metal sealing plate of hollow insulating cylinder upper end, hollow insulating cylinder lower end lower metal sealing plate, be axially disposed within it is hollow Conductive column in insulating cylinder, the cluster parachute for being coated on hollow insulating cylinder outer surface, such prior art still remain drawbacks described above.

Summary of the invention

The utility model is to solve moisture and impurity often via between porcelain vase and bolt or porcelain vase and arrester Gap between pedestal invades inside, causes leakage of current to make pedestal insulation resistance be remarkably decreased, brings security risk, should The technical issues of hidden danger cannot be found by patrol officer well.

The technical solution that the utility model is taken is；

A kind of split type lightning arrester base Leakage Current on-Line Monitor Device, it includes insulator protection shell, insulator protection The zinc oxide resistance sheet of interior of shell installation, insulator protect outer casing bottom to be equipped with insulator foot, and insulator protection shell passes through insulation Pedestal is arranged on basic steel pole, including current sensor, current sensor are mounted in insulator foot bottom cavity；Electric current passes Sensor is connected by the input terminal of communication module and main control module, the output end and alarm module of the input terminal of main control module Connection, the bi-directional data end of main control module is connect with remote monitoring center.

Above-mentioned insulator foot includes basic steel pole, and basic steel pole is equipped with drainage hole.

Including humidity sensor, humidity sensor is arranged in basic steel pole bottom.

Above-mentioned insulator foot includes metal bolts, and plating liquid layer is equipped on metal bolts.

Including display module, the input terminal of display module and main control module is connected.

Including short message transceiving module, the bi-directional data mouth of short message transceiving module and main control module is connected.

Above-mentioned communication module is wireless communication module.

Above-mentioned main control module is single-chip microcontroller or embedded system or PLC system.

Above-mentioned current sensor and humidity sensor collectively form collection in worksite module.

Compared with prior art, the beneficial effects of the utility model are as follows:

1, firstly, since insulator foot is often subjected to rain-out in outdoor, cause the metal bolts of insulator foot raw Rust, causes leakage current bigger than normal.Therefore, in this patent, metal bolts are substituted for stainless steel bolt.

2, secondly as insulator foot and flange connections poor sealing, therefore in this patent, waterproof effect is added Good sealant.

3, brush plating liquid is smeared in metal material appearance, prevents from further corroding.

4, it since the sealing of lightning arrester insulation base platform is bad, is flowed into basis in rain, snowy day air water, due to not divulging information Mouthful, cause moisture to be not easy to distribute, lightning arrester base insulation is relatively low.In this patent, basic steel pole is additionally arranged at the bottom of drainage hole, really It protects in steel pole without ponding.

5, in order to further monitor the insulating properties of insulative base on-line and quickly search failure, pacify below insulator foot Fill current sensor, real-time detection leakage current size.Meanwhile humidity sensor being installed in basic steel pole bottom, detect steel pole Interior humidity.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the structural schematic diagram of insulator foot in the utility model；

Fig. 3 is the system structure diagram of the utility model；

Fig. 4 is current sensor detection circuit figure；

Fig. 5 is the utility model humidity sensor detection circuit figure；

Fig. 6 is the main control circuit figure of Tthe utility model system；

Fig. 7 is the utility model audible alarm circuit；

Fig. 8 is the utility model short message transceiving module main control circuit figure.

Specific embodiment

As shown in Figure 1 to Figure 3, a kind of split type lightning arrester base Leakage Current on-Line Monitor Device, it includes that insulator is protected The zinc oxide resistance sheet installed inside shield shell 1, insulator protection shell 1, insulator protect 1 bottom of shell to be equipped with insulator foot 2, porcelain Set protection shell 1 is arranged on basic steel pole by insulator foot 2, including current sensor 4, current sensor 4 are mounted on absolutely In 2 bottom cavity of edge pedestal；Current sensor 4 is connect by communication module 5 with the input terminal of main control module 6, master control molding The output end of the input terminal of block 6 is connect with alarm module 7, and the bi-directional data end of main control module 6 and remote monitoring center 8 connect It connects.

The insulator foot 2 includes basic steel pole 12, and basic steel pole 12 is equipped with drainage hole 13.

Including humidity sensor 9, humidity sensor 9 is arranged in basic steel pole bottom.

The insulator foot 2 includes metal bolts 14, and plating liquid layer is equipped on metal bolts 14.

Including display module 10, display module 10 is connect with the input terminal of main control module 6.

Including short message transceiving module 11, short message transceiving module 11 is connect with the bi-directional data mouth of main control module 6.

The communication module 5 is wireless communication module.

The main control module 6 is single-chip microcontroller or embedded system or PLC system.

The current sensor 4 and humidity sensor 9 collectively form collection in worksite module 3.

Optionally, the good silicone rubber pad 15 of insulation performance is installed additional between porcelain vase and downlead.

As shown in figure 4, being current detection module circuit diagram.Using linear current sensing IC ACS712-20A, in the device It is equipped with the linear hall sensor circuit of accurate low biasing, the electricity proportional to the AC or DC electric current detected can be exported Pressure.Since the output voltage of ACS712-20A is linear with primary current, actually detected circuital current range is about in 0~4A The output voltage of variation, the sensor changes in 2.5~2.9V, Δ V=0.4V, and it is 0 that single-chip microcontroller, which requires detection input voltage, ~5V.For this purpose, level-one Differential Input proportion operational amplifier need to be added in sensor, to realize that current potential is mobile and signal amplifies, fortune It calculates and is made of in amplification circuit diagram resistance R3, R4, R5, R6 and amplifier OP1177.V1=V2=2.5V is taken, amplification factor is 12.5, application requirement can be met.

As shown in figure 5, being humidity sensor detection circuit figure, circuit uses capacitive humidity sensor, which is Use the dew cell of high molecular material as sensing element, it utilizes the moisture pick-up properties and swelling performance system of high-molecular organic material At, belong to hydrone affinity type dew cell, after moisture absorption, the polymeric dielectrics of significant change occur for dielectric constant, can do At capacitive moisture sensor.Circuit is made of two time base circuits IC1, IC2, and 556 be 555 multi resonant of dual time base circuit i.e. two Oscillator, IC1 and peripheral cell form multivibrator, the main pulse for generating triggering IC2, IC2 and capacitive dew cell And peripheral cell forms adjustable wide impulse generator, pulse width will depend on the size of the capacitance of dew cell, and The size of the capacitance of dew cell is decided by the relative humidity in air, and widened pulse is exported from No. 9 pins of IC2, through R5, Become DC signal output after C3 filtering.The size of output voltage is proportional to the relative humidity of air, sensitivity 2mV/% RH。

As shown in fig. 6, the single-chip microcontroller selects ATMEGA8L model single-chip microcontroller, major function is for reading each detection mould The signal of block, processing detection data send control signal to execution part.The circuit is by ATMEGA8L single-chip microcontroller U1, capacitor C1, C2, C3, C4, C5, crystal oscillator Y1, inductance L4 composition.ATMEGA8L single-chip microcontroller is main control chip.The end PB0~PB2 of single-chip microcontroller Mouth is for detecting the input signal of humidity sensor；The port PD0~PD2 is used to detect the input signal of current sensor；P2 is Program download interface；Capacitor C3 etc. constitutes reset circuit；Capacitor C4, C5 and inductance L4 form filter circuit, filter out power supply high frequency Signal guarantees that single-chip microcontroller works normally.

As shown in fig. 7, in the circuit of audible alarm, if detecting leakage current and humidity beyond this accident of threshold value Situation, ATMEGA8L single-chip microcontroller will export low level, and triggering buzzer generates sound report after triode amplification It is alert.

As shown in figure 8, when humidity sensor and current sensor detected value exceed threshold value, it not only can be remote by being transferred to Range monitoring center can also be sent to O&M operator on duty by short message form.The TC35I that module uses has 40 pins, leads to Cross the extraction of a ZIF (Zero Insertion Force, zero resistance socket) connector.This 40 pins can be divided into 5 classes, That is power supply, data input/output, SIM card, audio interface and control.The switch that single-chip microcontroller passes through two I/O mouthfuls of control TC35I Machine, reset etc. carry out data communication, traffic rate 9600Kbps, using 8 asynchronous communication sides by serial ports and TC35I Formula, 1 start bit, 8 data bit, 1 stop position.

Using the above structure, when in use, a kind of split type lightning arrester base Leakage Current on-line monitoring of the utility model Device adds safe anti-corrosion material, basic steel pole bottom is increased and is drained by improving material-structure outside discrete arrester Hole, while installing the good silicone rubber pad of insulation performance additional between porcelain vase and downlead.At the same time, pacify in insulator foot bottom Current sensor is filled, monitors insulator foot Leakage Current on-line；Humidity sensor is installed in basic steel pole bottom, is monitored in steel pole Portion's vapour concentration.By given threshold, when detecting that Leakage Current is higher than threshold value, transmission result is sent to on-site supervision end End, by telecommunication, will test result and is transferred to background monitoring, the day after tomorrow, monitoring personnel started maintenance side according to testing result Case, it is ensured that arrester safe operation.On-site supervision terminal according to testing result, starts warning device, can remind live dimension simultaneously Shield personnel are broken down, on-call maintenance.

The above-mentioned implementation example of the utility model be only be illustrate examples for clearly illustrating the present invention, and not be to this The restriction of the embodiment of utility model.For those of ordinary skill in the art, on the basis of the above description also Other various forms of variations and variation can be made.Here all embodiments can not be exhaustive.It is all to belong to this The technical solution changes and variations that derived from of utility model still fall within the protection scope of the utility model it Column.

Claims (9)

1. a kind of split type lightning arrester base Leakage Current on-Line Monitor Device, it includes insulator protection shell (1), insulator protection The zinc oxide resistance sheet installed inside shell (1), insulator protect shell (1) bottom to be equipped with insulator foot (2), and insulator protects shell (1) it is arranged on basic steel pole by insulator foot (2), it is characterised in that: including current sensor (4), current sensor (4) It is mounted in insulator foot (2) bottom cavity；Current sensor (4) passes through the input of communication module (5) and main control module (6) End connection, the output end of the input terminal of main control module (6) are connect with alarm module (7), the bi-directional data of main control module (6) End is connect with remote monitoring center (8).

2. split type lightning arrester base Leakage Current on-Line Monitor Device according to claim 1, it is characterised in that: described Insulator foot (2) includes basic steel pole (12), and basic steel pole (12) is equipped with drainage hole (13).

3. split type lightning arrester base Leakage Current on-Line Monitor Device according to claim 1, it is characterised in that: including Humidity sensor (9), humidity sensor (9) are arranged in basic steel pole bottom.

4. split type lightning arrester base Leakage Current on-Line Monitor Device according to claim 1, it is characterised in that: described Insulator foot (2) includes metal bolts (14), and plating liquid layer is equipped on metal bolts (14).

5. special according to claim 1 to 4 one of them described split type lightning arrester base Leakage Current on-Line Monitor Device Sign is: including display module (10), display module (10) is connect with the input terminal of main control module (6).

6. split type lightning arrester base Leakage Current on-Line Monitor Device according to claim 1, it is characterised in that: including Short message transceiving module (11), short message transceiving module (11) are connect with the bi-directional data mouth of main control module (6).

7. split type lightning arrester base Leakage Current on-Line Monitor Device according to claim 1, it is characterised in that: described Communication module (5) is wireless communication module.

8. split type lightning arrester base Leakage Current on-Line Monitor Device according to claim 1, it is characterised in that: described Main control module (6) is single-chip microcontroller or embedded system or PLC system.

9. split type lightning arrester base Leakage Current on-Line Monitor Device according to claim 2, it is characterised in that: described Current sensor (4) and humidity sensor (9) collectively form collection in worksite module (3).