CN212083530U

CN212083530U - Improved high-voltage electroscope

Info

Publication number: CN212083530U
Application number: CN202020354862.5U
Authority: CN
Inventors: 王保巨
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-12-04
Anticipated expiration: 2030-03-19

Abstract

An improved high-voltage electroscope comprises a shell; the contact electrode is arranged at the front end of the shell and made of metal and is connected into an electroscope circuit through a lead; an insulating rod arranged at the rear end of the shell; and an electroscope circuit, set up inside the casing, it includes a self-checking switch according to the preface, a high pressure conversion module, an electroscope chip, a drive circuit module, an electric quantity indication module, a audible-visual alarm module, wherein, the utility model discloses increase a return circuit test terminal for the electroscope, for the sheetmetal and set up on the housing face, it is connected to the VCC end of electroscope chip through the wire to whether the realization provides another kind of reliable detection means for detecting electroscope good work.

Description

Improved high-voltage electroscope

Technical Field

The utility model relates to a high voltage electric power system's online safety inspection equipment, concretely relates to improved generation high-voltage electroscope.

Background

According to the regulations of the revision 4.3.1 of the national grid company electric safety work rules in 2013, 6 months, when an electroscope cannot be tested on an electrified device, the electroscope can be verified to be good by using a power frequency high-voltage generator and the like. However, the high voltage generator used at present has large volume and high voltage, and is inconvenient to carry and expensive in outdoor operation. In addition, taking the 220KV electroscope as an example, the power frequency high voltage generator needs to output 220KV × 45% ("DL 740-.

In addition, whether the electroscope is good or not can not be accurately judged only by using the self-checking switch of the electroscope, because the self-checking switch of some manufacturers is not connected in the full circuit self-checking, and moreover, the self-checking switch provides a direct current signal for the electroscope, so that the direct current signal is separated from the real working environment of the alternating current high-voltage electroscope, and the accuracy of the high-voltage electroscope can not be verified.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model discloses an on the basis of original electroscope, install a return circuit test terminal additional, make it only need use electroscope tester output several volts when outdoor operations just can detect the electroscope, except that do not have the secondary injury to operating personnel, also practice thrift a large amount of funds for the electric power unit, improve social and economic benefits.

In order to achieve the above object, the utility model discloses a following technical scheme provides an improved generation high-voltage electroscope: it comprises a shell; the contact electrode is arranged at the front end of the shell and made of metal and is connected into an electroscope circuit through a lead; an insulating rod arranged at the rear end of the shell; and an electroscope circuit, set up inside the casing, include according to the preface:

a self-checking switch (S1) provided on the surface of the case, one end of the terminal being connected to the contact electrode and to the positive electrode (B +) of the battery through a resistor (R1), and the other end being connected to the negative electrode (B-);

a high voltage conversion module, which is connected in an electroscope circuit and comprises a zener diode (D) and a triode (Q1), wherein the base electrode of the triode (Q1) is connected with the anode of the zener diode (D) and a resistor (R2), and is connected to the contact electrode through a resistor (R5), the cathode of the zener diode (D), the other end of the resistor (R2) and the emitter electrode of the triode (Q1) are connected to the positive electrode (B +) of the battery, the collector electrode of the triode (Q1) is connected in series with the resistor (R6) and the capacitor (C1) and then connected to the negative electrode (B-) of the battery, the resistor (R15) is connected in parallel with the series circuit of the resistor (R6) and the capacitor (C1), and the end of the resistor (R6) connected with the capacitor (C1) is connected to the input ends (2A, 2B) of the electroscope chip (U1) through the resistor;

an electroscope chip (U1), the output terminal (3O) of which is connected to the base of the driving circuit module triode (Q2) through a resistor (R16);

the driving circuit module is connected in the electroscope circuit and comprises a triode (Q2), the base of the triode is connected to the resistor (R16), the emitter of the triode is connected to the negative pole (B-) of the battery, and the collector of the triode is used as the output end of the driving circuit module;

an electric quantity indicating module, set up below the display window of the electric quantity of body and connect in the electroscope circuit, it includes three battery electric quantity display lamps (LED1, LED2, LED3) and three voltage detection chips (U1, U2, U3) of different voltage detection values, wherein the positive pole of each battery electric quantity display lamp connects to its correspondent voltage detection chip output terminal (O), their negative pole connects to the collector of the triode (Q2) through the resistance (R13) after connecting in parallel, the positive pole of each voltage detection chip connects to the battery positive pole (B +), the negative pole connects to the collector of the triode (Q2), connect a pull-up resistance (R9, R10, R11) between positive pole and output terminal of each voltage detection chip;

the acousto-optic alarm module is arranged below the shell pore and connected in the electroscope circuit, and comprises a buzzer (BEEP1) and an alarm display lamp (LED4), one end of the buzzer (BEEP1) and the anode of the alarm display lamp (LED4) are connected to the positive pole (B +) of the battery, and the cathode series resistor (R14) of the alarm display lamp (LED4) and the other end of the buzzer (BEEP1) are connected to the collector electrode of the triode (Q2);

wherein the electroscope circuit further comprises:

and a loop test terminal which is a metal sheet and is arranged on the surface of the shell, and is connected to the VCC end of the electroscope chip, namely the end with the polarity opposite to that of the self-checking switch, through a lead.

Use the utility model discloses electroscope when outdoor operations, can be through the less 50HZ sine wave alternating current signal of the less detector output of volume, realize the inspection to electroscope, improved operation personnel's maneuverability, also guaranteed operating personnel's safety, simultaneously because the small low price of detector is practiced thrift a large amount of funds for electric power unit, improve social and economic benefits.

Drawings

FIG. 1 is an electrical schematic diagram of the electroscope of the present invention;

FIG. 2 is a first schematic view of the present invention;

FIG. 3 is a schematic view of the appearance of the present invention;

fig. 4 is the utility model discloses use return circuit test terminal to carry out the schematic diagram that detects to the electroscope.

Description of reference numerals: s1-self-checking switch; BEEP 1-buzzer; LED 4-alarm display light; LED1, LED2, LED 3-battery level indicator light; b + -a battery positive electrode; b- -the negative electrode of the battery; a D-zener diode; R1-R16-resistance; c1, C2-capacitance; q1, Q2-triode; U2-Voltage detection chip HT 7050A; U3-Voltage detection chip HT 7040A; U4-Voltage detection chip HT 7030A; u1-electroscope chip CD 4011; A. b-the output of the detector.

Detailed Description

Fig. 1 is the principle diagram of the electroscope of the present invention, which includes in sequence according to fig. 1:

wherein the electroscope circuit further comprises:

In the embodiment, when the electroscope self-checking switch is pressed, the triode (Q1) is conducted, the collector thereof outputs high level to enable the 3O of the electroscope chip to output high level, the triode (Q2) is conducted, the alarm display lamp (LED4) in the audible and visual alarm unit is lightened, the buzzer (BEEP1) sounds, and the electroscope self-checking is successful. Meanwhile, three battery charge level display lamps (LED1, LED2, LED3) of the charge level indicating unit light up the display according to the battery voltage. If LED1, LED2, LED3 are all lighted and are represented the built-in battery electric quantity of electroscope is 100%, if two electric quantity pilot lamp LED2 and LED3 are lighted, represent the built-in battery electric quantity of electroscope is 70%, if only an electric quantity pilot lamp LED3 is lighted, represent the built-in battery electric quantity of electroscope is 30%, belongs to the undervoltage state, needs to change the battery.

When the self-checking is successful and the electric quantity of the built-in battery of the electroscope is normal, the electroscope further needs to be verified on a line or equipment with the same level voltage, or a power frequency generator and the like are used for verifying the electroscope. In the embodiment, at the moment, the contact electrode is connected to a power frequency generator with the same level voltage, the triode (Q1) is conducted, the collector of the triode outputs high level so that 3O of the electroscope chip (U1) outputs high level, the triode (Q2) is conducted, the alarm display lamp (LED4) in the audible and visual alarm unit is turned on, the buzzer (BEEP1) sounds, and the confirmation is completed.

Fig. 2 and 3 are schematic external views of the present invention, and sequentially include, according to fig. 2 and 3: a housing; the contact electrode is arranged at the front end of the shell and made of metal and is connected into an electroscope circuit through a lead; an insulating rod arranged at the rear end of the shell; and an electroscope circuit arranged inside the shell.

In this embodiment, another way of detecting the electroscope is provided, so that the electroscope can be detected only by using a small voltage during outdoor operation.

Fig. 4 is the utility model discloses use return circuit test terminal to carry out the schematic diagram that detects to the electroscope, as shown in fig. 4, the return circuit test terminal of electroscope can link to each other with the alternating current output end (A) of detector on pressing from both sides the return circuit test terminal with it through the return circuit clip that has the wire, the metal electrode disect insertion detector's of electroscope output (B), the detector only need provide 50HZ sine wave alternating current operating voltage of electroscope, just can make the electroscope chip be in operating condition, can make triode (Q1) switch on, the 3O output high level of electroscope chip (U1) this moment, light with warning display lamp (LED4) among the drive audible-visual alarm unit, bee calling organ (BEEP1) sound, the electroscope detects and accomplishes.

In an embodiment of the present invention, the electroscope can have different specifications by changing the model of the electronic component (e.g., changing the resistance of different resistances), so as to realize that the electroscope of the present invention can inspect the lines of 9 voltage levels of 0.4KV, 10KV, 35KV, 66KV, 110KV, 220KV, 330KV, 500KV and 750 KV.

In summary, the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those of ordinary skill in the art should understand that modifications or equivalent substitutions made without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. An improved high voltage electroscope comprising: a housing; the contact electrode is arranged at the front end of the shell and made of metal and is connected into an electroscope circuit through a lead; an insulating rod arranged at the rear end of the shell; and an electroscope circuit, set up inside the casing, include according to the preface:

characterized in that the electroscope circuit further comprises:

and a loop test terminal which is a metal sheet and is arranged on the surface of the shell, and is connected to the VCC end of the electroscope chip (U1), namely the end with the polarity opposite to that of the self-checking switch through a lead.