CN205861843U - A kind of distribution line insulator charged detection device - Google Patents

Abstract

The utility model discloses a kind of distribution line insulator charged detection device, including housing, the inside of described housing is provided with circuit board, and circuit board is provided with input protection circuit, first outfan of described input protection circuit connects bleeder circuit, and the outfan of bleeder circuit connects the first input end having rectification circuit, second input of described rectification circuit connects the outfan having current switching module, and the input of current switching module connects the outfan having shunt circuit, the input of described shunt circuit is connected with the second outfan of input protection circuit, 3rd input of described rectification circuit connects electric capacity C1, and the other end of electric capacity C1 connects the pin 6 having switch K1.This utility model uses current measurement mode, it is judged that insulator dielectric level, need not have a power failure, have no effect circuit during operation, and man-hour used is short, easy to operate, is suitable for a line work about electric power person and uses.

Description

A kind of distribution line insulator charged detection device

Technical field

This utility model relates to technical field of electric power, particularly relates to a kind of distribution line insulator charged detection device.

Background technology

Current insulator charged detection technique quickly grows, but a lot of technology is many among exploring, and technology is the most perfect Ripe.Relatively big by environmental disturbances, such as: the Infrared Detection Method of insulator, UV detection method, this kind of non-contact detection method makes The defect of insulation is detected by image-forming principle.Another kind of contact measurement mode, such as electric field method, Leakage Current method and hydrophobicity Detection.The operation of the former cordless is more succinct easily, but affected by environment relatively big, accuracy of measurement it cannot be guaranteed that, only It is used in rough measure；Latter class detection method detection technique requires that level is high, and such as electric field method needs the highest technology requirement, All kinds of cooperation instrument is asked to need the highest sensitivity.This is invented us and uses Leakage Current method to measure defects of insulator, when absolutely During the defective fault of edge, necessarily having Leakage Current and produce, we are by measuring Leakage Current, it is judged that insulator is No defective existence.

It is to use power failure operation mostly that prior art treats the detection of insulator, dismantles insulator, then measures insulator Pollution level and salt density, and voltage flashover test.Method therefor is wasted time and energy, and power failure all produces one to productive life A little impacts.

Utility model content

The purpose of this utility model is to solve shortcoming present in prior art, and a kind of distribution line proposed is exhausted Edge subband electric detection means.

To achieve these goals, this utility model adopts the technical scheme that

A kind of distribution line insulator charged detection device, including housing, the inside of described housing is provided with circuit board, and electricity Road plate is provided with input protection circuit, and the first outfan of described input protection circuit connects bleeder circuit, and bleeder circuit Outfan connect and have the first input end of rectification circuit, the second input of described rectification circuit connects current switching module Outfan, and the input of current switching module connects and has the outfan of shunt circuit, the input of described shunt circuit and Second outfan of input protection circuit is connected, and the 3rd input of described rectification circuit connects electric capacity C1, and electric capacity C1 The other end connect have switch K1 pin 6, described switch K1 pin 1 connection have voltage input end V1 and resistance R1, described The other end of resistance R1 connects resistance R2 and the pin 2 of switch K1, and the other end of described resistance R2 connects to be had resistance R3 and open Closing the pin 3 of K1, the other end of described resistance R3 connects resistance R4 and the pin 4 of switch K1, the other end of described resistance R4 Connecting and have voltage input end V2, the switch pin 5 of K1, electric capacity C2 and voltage output end VO2, the other end of described electric capacity C2 connects There is resistance R5 and voltage output end VO1, and the other end of resistance R5 is connected with the outfan of rectification circuit, described rectification circuit Four-input terminal connect and have resistance R7 and the pin 1 of switch K2, the other end of described resistance R7 connects the pin 2 having switch K2 Connecting with the other end of resistance R8, described resistance R8 and have resistance R9 and the pin 3 of switch K2, the other end of described resistance R9 connects Having resistance R10 and the pin 4 of switch K2, the other end of described resistance R10 connects electric capacity C2, the switch pin 5 of K2, diode The positive pole of D2, the negative pole of diode D1 and current input terminal I2, the pin 6 of described switch K2 connect have the positive pole of diode D1, The negative pole of diode D2 and resistance R6, and the other end of resistance R6 connects and has current input terminal I1, described voltage output end VO1 even It is connected to the first input end of electrical switch K3, and second input of electrical switch K3 is connected with voltage output end VO2, described First outfan of electrical switch K3 connects resistance R11, and the other end connection of resistance R11 has bearing of resistance C3 and element U1 The outfan of pole input, the electrode input end ground connection of described element U1, and element U1 connects the other end and the unit having electric capacity C3 The outfan of the electrode input end of part U2, the negative input ground connection of described element U2, and element U2 connects control logic list The first input end of unit, the second input of described control logical block connects clock signal clk, and controls logical block 3rd input is connected with second outfan of electrical switch K3, and the first outfan of described control logical block connects meter Time device, and control logical block second outfan connect have display decoding and the input of Drive Module, described display is translated The outfan of code and Drive Module connects liquid crystal display, and liquid crystal display is positioned on housing.

Preferably, the model of described switch K1 and switch K2 is SS25D01, and switch K1 and switch K2 is equipped with five Gear.

Preferably, described element U1 and electric capacity C3 collectively forms integrator, and element U2 is comparator.

Preferably, described electrical switch K3 collectively forms with element U1, element U2, electric capacity C3 and control logic module respectively A/D change-over circuit.

Preferably, described bleeder circuit, rectification circuit, current switching module, shunt circuit, A/D change-over circuit and display Decoding and Drive Module are respectively positioned on circuit board.

The beneficial effects of the utility model: by rectification circuit, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5 Together constituting a tension measuring circuit with switch K1, this tension measuring circuit can be to the electricity at distribution line insulator two ends Pressure detects, it is ensured that distribution line properly functioning；By rectification circuit, resistance R5, resistance R6, resistance R7, resistance R8, Resistance R9, resistance R10, switch K2, diode D1 and diode D2 together constitute a current detection circuit, this current detecting Leakage Current on distribution line insulator can be detected by circuit, and then judges whether distribution line insulator exists Defect, it is simple to a line work about electric power person uses；By control logic module respectively with electrical switch K3, integrator and element U2 together constitutes an analog to digital conversion circuit, and the analogue signal detected can be converted to numeral letter by this analog to digital conversion circuit Number, then digital signal can show on a liquid crystal display, it is simple to testing result is checked by staff；This reality By novel employing current measurement mode, it is judged that insulator dielectric level, need not have a power failure during operation, circuit is had no effect, institute Short with man-hour, easy to operate, it is suitable for a line work about electric power person and uses.

Accompanying drawing explanation

Fig. 1 is the composition frame chart of a kind of distribution line insulator charged detection device that the utility model proposes；

Fig. 2 is the tension measuring circuit principle of a kind of distribution line insulator charged detection device that the utility model proposes Figure；

Fig. 3 is the current measurement circuit principle of a kind of distribution line insulator charged detection device that the utility model proposes Figure；

Fig. 4 is the analog to digital conversion circuit principle of a kind of distribution line insulator charged detection device that the utility model proposes Figure.

In figure: 1 input protection circuit, 2 bleeder circuits, 3 rectification circuits, 4 current switching modules, 5 shunt circuits, 6A/D turn Change circuit, 7 display decoding and Drive Module, 8 liquid crystal displays.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.

With reference to Fig. 1-4, a kind of distribution line insulator charged detection device, including housing, the inside of housing is provided with circuit Plate, and circuit board is provided with input protection circuit 1, the first outfan of input protection circuit 1 connects bleeder circuit 2, and point The outfan of volt circuit 2 connects the first input end having rectification circuit 3, and the second input of rectification circuit 3 connects has electric current to cut The outfan of die change block 4, and the input of current switching module 4 connects and have the outfan of shunt circuit 5, shunt circuit 5 defeated Entering end to be connected with the second outfan of input protection circuit 1, the 3rd input of rectification circuit 3 connects electric capacity C1, and electricity The other end holding C1 connects the pin 6 having switch K1, and the pin 1 of switch K1 connects voltage input end V1 and resistance R1, resistance The other end of R1 connects resistance R2 and the pin 2 of switch K1, and the other end of resistance R2 connects drawing of resistance R3 and switch K1 Foot 3, the other end of resistance R3 connects resistance R4 and the pin 4 of switch K1, and the other end of resistance R4 connects voltage input end V2, the switch pin 5 of K1, electric capacity C2 and voltage output end VO2, the other end of electric capacity C2 connects resistance R5 and voltage output end VO1, and the other end of resistance R5 is connected with the outfan of rectification circuit 3, the four-input terminal of rectification circuit 3 connects resistance R7 and the pin 1 of switch K2, the other end of resistance R7 connects has the pin 2 of switch K2 and the other end of resistance R8, resistance R8 to connect Being connected to resistance R9 and the pin 3 of switch K2, the other end of resistance R9 connects resistance R10 and the pin 4 of switch K2, resistance R10 The other end connect and have electric capacity C2, the switch pin 5 of K2, the positive pole of diode D2, the negative pole of diode D1 and current input terminal I2, the pin 6 of switch K2 connects the positive pole of diode D1, the negative pole of diode D2 and resistance R6, and the other end of resistance R6 Connecting has current input terminal I1, voltage output end VO1 to connect to have the first input end of electrical switch K3, and the of electrical switch K3 Two inputs are connected with voltage output end VO2, and first outfan of electrical switch K3 connects resistance R11, and resistance R11 The other end connects resistance C3 and the negative input of element U1, the electrode input end ground connection of element U1, and the output of element U1 End connects the other end and the electrode input end of element U2 having electric capacity C3, the negative input ground connection of element U2, and element U2's Outfan connects the first input end controlling logical block, and the second input connection controlling logical block has clock signal CLK, and the 3rd input controlling logical block is connected with second outfan of electrical switch K3, controls the of logical block One outfan connects a timer, and the second outfan controlling logical block connects and has display decoding and Drive Module 7 Input, the outfan of display decoding and Drive Module 7 connects liquid crystal display 8, and liquid crystal display 8 is positioned at housing On, the model of switch K1 and switch K2 is SS25D01, and switch K1 and switch K2 is equipped with five gears, element U1 and electricity Holding C3 and collectively form integrator, and element U2 is comparator, electrical switch K3 respectively with element U1, element U2, electric capacity C3 and control Logic module processed collectively forms A/D change-over circuit 6, bleeder circuit 2, rectification circuit 3, current switching module 4, shunt circuit 5, A/ D change-over circuit 6 and display decoding and Drive Module 7 are respectively positioned on circuit board.

Operation principle: rectification circuit 3 respectively with resistance R1, resistance R2, resistance R3, resistance R4, resistance R5 and switch K1 phase Coordinating, and then constitute a tension measuring circuit, this tension measuring circuit can be to the voltage at distribution line insulator two ends Detect, it is ensured that distribution line properly functioning, simultaneously rectification circuit 5 respectively with resistance R5, resistance R6, resistance R7, electricity Resistance R8, resistance R9, resistance R10, switch K2, diode D1 and diode D2 match, and then constitute a current detecting electricity Road, the Leakage Current on distribution line insulator can be detected by this current detection circuit, if the inspection of this current detection circuit Measure Leakage Current, then this distribution line insulator existing defects, control logic module respectively with electrical switch K3, integrator and Element U2 together constitutes an A/D change-over circuit 6, and the analogue signal detected can be converted to number by this A/D change-over circuit 6 Word signal, then digital signal can show on liquid crystal display 8, it is simple to testing result is looked into by staff Seeing, display decoding and Drive Module 7 provide to liquid crystal display 8 and drive and decoding.

The above, only this utility model preferably detailed description of the invention, but protection domain of the present utility model is not Being confined to this, any those familiar with the art is in the technical scope that this utility model discloses, according to this practicality Novel technical scheme and utility model thereof conceive equivalent or change in addition, all should contain at protection model of the present utility model Within enclosing.

Claims (5)

1. a distribution line insulator charged detection device, including housing, the inside of described housing is provided with circuit board, and circuit Plate is provided with input protection circuit (1), it is characterised in that the first outfan of described input protection circuit (1) connects dividing potential drop Circuit (2), and the outfan of bleeder circuit (2) connects and has the first input end of rectification circuit (3), described rectification circuit (3) Second input connects the outfan having current switching module (4), and the input connection of current switching module (4) has shunting electricity The outfan on road (5), the input of described shunt circuit (5) is connected with the second outfan of input protection circuit (1), described 3rd input of rectification circuit (3) connects electric capacity C1, and the other end of electric capacity C1 connects the pin 6 having switch K1, described The pin 1 of switch K1 connects has the other end connection of voltage input end V1 and resistance R1, described resistance R1 to have resistance R2 and switch The pin 2 of K1, the other end of described resistance R2 connects resistance R3 and the pin 3 of switch K1, and the other end of described resistance R3 is even Be connected to resistance R4 and the pin 4 of switch K1, the other end of described resistance R4 connect have voltage input end V2, the pin 5 of switch K1, The other end of electric capacity C2 and voltage output end V02, described electric capacity C2 connects resistance R5 and voltage output end V01, and resistance R5 The other end be connected with the outfan of rectification circuit (3), the four-input terminal of described rectification circuit (3) connect have resistance R7 and The pin 1 of switch K2, the other end of described resistance R7 connects another that have the pin 2 of switch K2 and resistance R8, described resistance R8 End connects resistance R9 and the pin 3 of switch K2, and the other end of described resistance R9 connects resistance R10 and the pin 4 of switch K2, The other end of described resistance R10 connect have electric capacity C2, the switch pin 5 of K2, the positive pole of diode D2, the negative pole of diode D1 and The pin 6 of current input terminal I2, described switch K2 connects the positive pole of diode D1, the negative pole of diode D2 and resistance R6, and The other end of resistance R6 connects has current input terminal I1, described voltage output end V01 connection to have the first of electrical switch K3 to input Holding, and second input of electrical switch K3 is connected with voltage output end V02, first outfan of described electrical switch K3 is even Being connected to resistance R11, and the other end connection of resistance R11 has resistance C3 and the negative input of element U1, described element U1 is just Pole input end grounding, and the outfan of element U1 connects and has the other end and the electrode input end of element U2 of electric capacity C3, described unit The negative input ground connection of part U2, and element U2 outfan connect have control logical block first input end, described control Second input of logical block connects clock signal clk, and controls the 3rd input and the electrical switch K3 of logical block The second outfan be connected, the first outfan of described control logical block connects a timer, and controls logical block Second outfan connects display decoding and the input of Drive Module (7), described display decoding and Drive Module (7) Outfan connects liquid crystal display (8), and liquid crystal display (8) is positioned on housing.

A kind of distribution line insulator charged detection device the most according to claim 1, it is characterised in that described switch K1 It is SS25D01 with the model of switch K2, and switch K1 and switch K2 is equipped with five gears.

A kind of distribution line insulator charged detection device the most according to claim 1, it is characterised in that described element U1 Collectively form integrator with electric capacity C3, and element U2 is comparator.

A kind of distribution line insulator charged detection device the most according to claim 1, it is characterised in that described electronic cutting Close K3 and collectively form A/D change-over circuit (6) with element U1, element U2, electric capacity C3 and control logic module respectively.

5. according to a kind of distribution line insulator charged detection device described in claim 1 or 4, it is characterised in that described point Volt circuit (2), rectification circuit (3), current switching module (4), shunt circuit (5), A/D change-over circuit (6) and display decoding and Drive Module (7) is respectively positioned on circuit board.