CN214795038U

CN214795038U - Overvoltage protector detector

Info

Publication number: CN214795038U
Application number: CN202120458052.9U
Authority: CN
Inventors: 胡燕
Original assignee: Anhui Fangsheng Electrical Technology Co ltd
Current assignee: Anhui Fangsheng Electrical Technology Co ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-11-19
Anticipated expiration: 2031-03-03

Abstract

The utility model discloses an overvoltage protector detector, including 220V alternating voltage circuit, electrodeless pressure regulating circuit, step-down rectification filter circuit, processor circuit, current and voltage detection circuit, overcurrent protection circuit, boost circuit, overvoltage protection device, electrodeless pressure regulating circuit is used for exporting 0-220V alternating voltage, and step-down rectification filter circuit is used for improving the direct current for the processor, and processor circuit is used for control voltage's regulation and the operation of circuit, and current and voltage detection circuit carries out current and voltage's collection, and overcurrent protection circuit is used for further protection circuit, and boost circuit is used for producing ten thousand volts of high voltage. The utility model discloses overvoltage protector detector utilizes single chip microcomputer control to overvoltage protector's automated inspection, only needs to monitor through instrument panel, has avoided examining the repeated wiring of time measuring simultaneously, reduces unnecessary work load, and the current-voltage detection of adding has further ensured staff's safety, has reduced the volume of detector simultaneously.

Description

Overvoltage protector detector

Technical Field

The utility model relates to an equipment testing technical field specifically is overvoltage protector detector.

Background

The overvoltage protector is a serious advanced protective electrical appliance for limiting lightning overvoltage and operating overvoltage, the power frequency discharge voltage of the overvoltage protector is one of important parameters, the overvoltage protector is usually detected by a detector, the power frequency discharge voltage value of the overvoltage protector is accurately measured, and is strictly controlled within a specified range, so that the insulation of generator, transformer, bus, switch, motor and other Dinach equipment in a power system of 35KV and below can be prevented from being damaged by voltage, however, the current overvoltage protector detector is provided with a heavy autotransformer for voltage regulation, the size and the weight of the instrument are increased, the current and voltage values are difficult to accurately read by a current meter and a voltmeter alone, and in addition, the current and voltage values are required to be continuously connected and disconnected when different phase ends of each overvoltage protector are measured, and the workload of manual connection is increased, and there is a certain risk of electric shock.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an overvoltage protector detector to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

overvoltage protector detector, including 220V alternating voltage circuit, electrodeless pressure regulating circuit, step-down rectification filter circuit, processor circuit, current and voltage detection circuitry, overcurrent protection circuit, boost circuit, overvoltage protector, electrodeless pressure regulating circuit is used for exporting 0-220V alternating voltage, and step-down rectification filter circuit is used for improving the direct current for the processor, and the processor circuit is used for the regulation of control voltage and the operation of circuit, and current and voltage detection circuitry carries out the collection of current and voltage, and overcurrent protection circuit is used for further protection circuit, and boost circuit is used for producing the ten thousand volts of high voltage.

As a further technical solution of the present invention: the output end of the 220V alternating voltage circuit is connected with the electrodeless voltage regulating circuit and the voltage reduction rectification filter circuit, the output end of the electrodeless voltage regulating circuit is connected with the output end of the current and voltage detection circuit and the input end of the overcurrent protection circuit, the output end of the current and voltage detection circuit is connected with the digital quantity input end of the processor circuit, the pulse output end of the processor circuit is connected with the regulating end of the electrodeless voltage regulating circuit, the output end of the overcurrent protection circuit is connected with the input end of the booster circuit, and the output end of the booster circuit is connected with the overvoltage protector through the relay switch.

As a further technical solution of the present invention: the processor circuit comprises a singlechip U1, a resistor R2, a resistor R1, a capacitor C3, the anode of a capacitor C2, a port 3 of a voltage stabilizer IC1 and a port 1 of a control switch U2 which are connected with a pin VCC of the singlechip U1, the other end of a resistor R2 and a button switch K2 which are connected with a pin P2.0 of a singlechip U1, the other end of a resistor R1 and a button switch K1 which are connected with a pin GND of the singlechip U1, the other end of a button switch K2, the other end of a button switch K1, the other end of a capacitor C3, the cathode of a capacitor C2, the port 1 of a voltage stabilizer IC1, the anode of a capacitor C1, the other end of a diode D1 and a relay KA, a port 2 of a voltage stabilizer IC1 is connected with the port 4 of a rectifier T and the anode of a capacitor C1, a port 1 of the rectifier T is connected with a secondary winding FU 72 of a transformer W3, and the other end of the rectifier T is connected with a secondary winding W3, the primary winding of the transformer W is connected with 220V voltage, the PWM output end of the singlechip U1 is connected with a port 2 of a control switch U2, a port 6 of the control switch U2 is connected with a resistor R3 and a capacitor C4 through a resistor R2, a port 4 of the control switch U2 is connected with a relay contact KA1 and a control electrode of a transistor SCR, the other end of the resistor R3 is connected with a transistor SCR, a resistor R4 and an input end of an overcurrent protection circuit, the other end of the transistor SCR is connected with the other end of the capacitor C4, the capacitors C5 and 220V alternating-current voltage AC, the other end of the capacitor C5 is connected with a potentiometer RP1, a slider end of a potentiometer RP1 and a transistor SCR2, the other end of the transistor SCR2 is connected with the other end of the relay switch KA1, the other end of the potentiometer RP1 is connected with the other end of a resistor R4, and the other end of the input end of the overcurrent protection circuit is connected with the other end of the 220V alternating-current voltage AC.

As a further technical solution of the present invention: the over-current protection circuit is connected with an output end VIN of the electrodeless voltage regulation circuit, the output end VIN of the electrodeless voltage regulation circuit is connected with a resistor R12, a collector of a triode P1, a resistor R7, a resistor R9 and an emitter of a triode P2, the other end VIN of the output end VIN of the electrodeless voltage regulation circuit is connected with a ground end, an emitter of a triode N1, a resistor R6 and a primary winding of a transformer W1, a collector of a triode P1 is connected with a collector of a triode N1 through a resistor R5, a collector of a triode N1 is connected with the other ends of a resistor R8 and a resistor R12, a base of a triode P1 is connected with the other end of a resistor R7 and an anode of a light emitting diode LED1, a base of a triode P2 is connected with a collector of a triode 387N 2, a collector of a triode P2 is connected with a capacitor C6, a resistor R10 and the other end of the primary winding of the transformer W1, and the other end of the resistor R10 is connected with a cathode of a light emitting diode LED1 through an anode of a voltage stabilizer D2, the base electrode of the triode N2 is connected with the other end of the resistor R8, the other end of the resistor R9 and the other end of the capacitor C6, the secondary winding of the transformer W is connected with the voltmeter V and the resistor R11, the other end of the secondary winding of the transformer W is connected with the other end of the voltmeter V and the current variable A, the other end of the ammeter A is connected with the ground end and the ground end of the overvoltage protector, the A-C ends of the overvoltage protector are sequentially connected with the relay contacts KB1, KC1 and KD1, and the other end of the resistor R11 is connected with the other ends of the relay KB contacts 1, KC1 and KD 1.

As a further technical solution of the present invention: the transformer W, the rectifier T and the capacitor C1 form a voltage reduction rectification filter circuit, the resistor R2-R5, the transistor SCR1-SCR2, the capacitor C4-C5, the relay contact KA1 and the potentiometer RP1 form an electrodeless voltage regulation circuit, the resistor R5-R12, the triode N1-N2, the triode P1-P2, the voltage stabilizing diode D2 and the light emitting diode LED1 form an overcurrent protection circuit, and the transformer W1 forms a voltage boosting circuit.

As a further technical solution of the present invention: the voltage stabilizer IC1 selects a 7805 three-terminal integrated voltage stabilizer, the singlechip U1 selects an STC89C55 singlechip, and the control switch U2 selects an MOC3021 photoelectric coupler.

As a further technical solution of the present invention: the transistor SCR1 is a bidirectional thyristor, and the transistor SCR2 is a bidirectional diode.

As a further technical solution of the present invention: and the current voltage detection circuit adopts a current transformer.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses overvoltage protector detector utilizes single chip microcomputer control to overvoltage protector's automated inspection, only needs to monitor through instrument panel, has avoided examining the repeated wiring of time measuring simultaneously, reduces unnecessary work load, and the current-voltage detection of adding has further ensured staff's safety, has reduced the volume of detector simultaneously.

Drawings

Fig. 1 is a schematic block diagram of the principle of the present invention.

Fig. 2 is a schematic diagram of the circuit connection between the processor circuit and the electrodeless voltage regulating circuit.

Fig. 3 is the circuit connection diagram of the overcurrent protection circuit and the boost circuit of the present invention.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1, the overvoltage protector detector comprises a 220V ac voltage circuit, an electrodeless voltage regulation circuit, a buck rectifier filter circuit, a processor circuit, a current and voltage detection circuit, an overcurrent protection circuit, a boost circuit, and an overvoltage protector, wherein the electrodeless voltage regulation circuit is used for outputting 0-220V ac voltage, the buck rectifier filter circuit is used for increasing dc voltage for the processor, the processor circuit is used for controlling voltage regulation and circuit operation, the current and voltage detection circuit collects current and voltage, the overcurrent protection circuit is used for further protecting the circuit, the boost circuit is used for generating ten thousand volts high voltage, the output end of the 220V ac voltage circuit is connected with the electrodeless voltage regulation circuit and the buck rectifier filter circuit, the output end of the electrodeless voltage regulation circuit is connected with the output end of the current and voltage detection circuit and the input end of the overcurrent protection circuit, the output end of the current and voltage detection circuit is connected with the digital input end of the processor circuit, the pulse output end of the processor circuit is connected with the adjusting end of the electrodeless voltage regulating circuit, the output end of the overcurrent protection circuit is connected with the input end of the booster circuit, and the output end of the booster circuit is connected with the overvoltage protector through the relay switch.

Example 2: on the basis of embodiment 1, please refer to fig. 2, the processor circuit includes a single chip microcomputer U1, a resistor R2, a resistor R1, a capacitor C3, an anode of a capacitor C2, a port 3 of a regulator IC1, a port 1 of a control switch U2, a pin P2.0 of the single chip microcomputer U1 is connected with the other end of a resistor R2 and a push button switch K2, a pin P2.0 of the single chip microcomputer U1 is connected with the other end of a resistor R1 and a push button switch K1, a pin GND of the single chip microcomputer U1 is connected with a ground terminal, the other end of a push button switch K2, the other end of a push button switch K1, the other end of a capacitor C3, a cathode of a capacitor C56, a port 1 of a regulator IC1, an anode of a capacitor C1, the other end of a diode D1 and a relay KA, a port 2 of a regulator IC1 is connected with a port 4 of a rectifier T and an anode of a winding C1, a fuse FU1 of the rectifier T is connected with a secondary terminal of a transformer W1, the port 3 of the rectifier T is connected with the other end of the secondary winding of the transformer W, the primary winding of the transformer W is connected with 220V voltage, the PWM output end of the singlechip U1 is connected with the port 2 of the control switch U2, the port 6 of the control switch U2 is connected with the resistor R3 and the capacitor C4 through the resistor R2, the port 4 of the control switch U2 is connected with the relay contact KA1 and the control electrode of the transistor SCR, the other end of the resistor R3 is connected with the input ends of the transistor SCR, the resistor R4 and the overcurrent protection circuit, the other end of the transistor SCR is connected with the other end of the capacitor C4, the other end of the capacitor C5 is connected with the potentiometer RP1, the slider end of the potentiometer RP1 and the transistor SCR2, the other end of the transistor SCR2 is connected with the other end of the relay switch KA1, the other end of the potentiometer RP1 is connected with the other end of the resistor R4, and the other end of the input end of the overcurrent protection circuit is connected with the other end of the 220V alternating-current voltage AC.

Example 3: on the basis of embodiment 2, please refer to fig. 3, the overcurrent protection circuit is connected to the output terminal VIN of the electrodeless voltage regulation circuit, the output terminal VIN of the electrodeless voltage regulation circuit is connected to the resistor R12, the collector of the transistor P1, the resistor R7, the resistor R9 and the emitter of the transistor P2, the other end of the output terminal VIN of the electrodeless voltage regulation circuit is connected to the ground, the emitter of the transistor N1, the resistor R6 and the primary winding of the transformer W1, the collector of the transistor P1 is connected to the collector of the transistor N1 through the resistor R5, the collector of the transistor N1 is connected to the resistor R8 and the other end of the resistor R12, the base of the transistor P1 is connected to the other end of the resistor R7 and the anode of the LED1, the base of the transistor P2 is connected to the collector of the transistor N2, the collector of the transistor P2 is connected to the capacitor C6, the resistor R10 and the other end of the primary winding of the transformer W1, the other end of the resistor R10 is connected to the cathode of the LED1 through the anode of the LED 2, the base electrode of the triode N2 is connected with the other end of the resistor R8, the other end of the resistor R9 and the other end of the capacitor C6, the secondary winding of the transformer W is connected with the voltmeter V and the resistor R11, the other end of the secondary winding of the transformer W is connected with the other end of the voltmeter V and the current variable A, the other end of the ammeter A is connected with the ground end and the ground end of the overvoltage protector, the A-C ends of the overvoltage protector are sequentially connected with the relay contacts KB1, KC1 and KD1, and the other end of the resistor R11 is connected with the other ends of the relay KB contacts 1, KC1 and KD 1.

The utility model discloses a theory of operation is: the overvoltage protector detector is connected with the three-phase end A-C of the overvoltage protector, the power is supplied through 220V, the power is supplied to a singlechip U1 through voltage reduction, rectification and filtering, when the output voltage of the stepless voltage regulation circuit needs to be automatically regulated, only a button switch K1 needs to be pressed to supply an input signal to a pin P2.0, the singlechip U1 controls automatic voltage boosting, breakdown and voltage reduction through a software circuit compiled in advance according to a clock module of the singlechip U1, the functions of the singlechip U1 are cycled for a period of time, the average value of 3 times of breakdown is finally obtained through automatic calculation, when the phase end of the voltage protector needs to be replaced, only the singlechip U1 needs to control relay contacts KB, KC and KD to be closed respectively, the relay contacts are forbidden to be closed simultaneously, but when the voltage needs to be manually regulated for detection, only the button switch K2 needs to be pressed, the KA is electrified, and the relay contact KA1 is attracted, the output voltage is changed by controlling the potentiometer RP1, meanwhile, the current transformer detects data during testing and transmits the data to the single chip microcomputer U1, when overcurrent or short circuit occurs in the circuit, and the differential pressure between the collector and the base of the triode P2 is larger than the conduction values of the voltage regulator tube D2 and the light emitting diode LED1, the triode P1 is conducted, the triode N1 is conducted, the triodes P2 and N2 are cut off, and no current is output.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The overvoltage protector detector comprises a 220V alternating-current voltage circuit, an electrodeless voltage regulating circuit, a voltage reduction rectification filter circuit, a processor circuit, a current and voltage detection circuit, an overcurrent protection circuit, a booster circuit and an overvoltage protector, and is characterized in that the output end of the 220V alternating-current voltage circuit is connected with the electrodeless voltage regulating circuit and the voltage reduction rectification filter circuit, the output end of the electrodeless voltage regulating circuit is connected with the output end of the current and voltage detection circuit and the input end of the overcurrent protection circuit, the output end of the current and voltage detection circuit is connected with the digital quantity input end of the processor circuit, the pulse output end of the processor circuit is connected with the regulating end of the electrodeless voltage regulating circuit, the output end of the overcurrent protection circuit is connected with the input end of the booster circuit, and the output end of the booster circuit is connected with the overvoltage protector through a relay switch.

2. The overvoltage protector detector according to claim 1, wherein the processor circuit comprises a single-chip microcomputer U1, a resistor R2 connected to pin VCC of the single-chip microcomputer U1, a resistor R1, a capacitor C3, an anode of a capacitor C2, a port 3 of a regulator IC1, a port 1 of a control switch U2, a pin P2.0 of a single-chip microcomputer U1 is connected to the other end of the resistor R2 and a push-button switch K2, a pin P2.0 of a single-chip microcomputer U1 is connected to the other end of the resistor R1 and a push-button switch K1, a pin GND of a single-chip microcomputer U1 is connected to a ground terminal, the other end of a push-button switch K2, the other end of a push-button switch K1, the other end of a capacitor C3, a cathode of a capacitor C2, a port 1 of a regulator IC1, an anode of a capacitor C1, the other end of a diode D1 and a relay KA, a port 2 of a rectifier IC1 is connected to a port 4 of a rectifier T and an anode of a secondary winding C1, and a secondary port of a transformer FU1, the port 3 of the rectifier T is connected with the other end of the secondary winding of the transformer W, the primary winding of the transformer W is connected with 220V voltage, the PWM output end of the singlechip U1 is connected with the port 2 of the control switch U2, the port 6 of the control switch U2 is connected with the resistor R3 and the capacitor C4 through the resistor R2, the port 4 of the control switch U2 is connected with the relay contact KA1 and the control electrode of the transistor SCR, the other end of the resistor R3 is connected with the input ends of the transistor SCR, the resistor R4 and the overcurrent protection circuit, the other end of the transistor SCR is connected with the other end of the capacitor C4, the other end of the capacitor C5 is connected with the potentiometer RP1, the slider end of the potentiometer RP1 and the transistor SCR2, the other end of the transistor SCR2 is connected with the other end of the relay switch KA1, the other end of the potentiometer RP1 is connected with the other end of the resistor R4, and the other end of the input end of the overcurrent protection circuit is connected with the other end of the 220V alternating-current voltage AC.

3. The overvoltage protector tester of claim 2, wherein the over-current protection circuit is connected to the output terminal VIN of the electrodeless voltage regulation circuit, the output terminal VIN of the electrodeless voltage regulation circuit is connected to the resistor R12, the collector of the transistor P1, the resistor R7, the resistor R9 and the emitter of the transistor P2, the other end of the output terminal VIN of the electrodeless voltage regulation circuit is connected to ground, the emitter of the transistor N1, the resistor R6 and the primary winding of the transformer W1, the collector of the transistor P1 is connected to the collector of the transistor N1 through the resistor R5, the collector of the transistor N1 is connected to the resistor R8 and the other end of the resistor R12, the base of the transistor P1 is connected to the other end of the resistor R7 and the anode of the LED1, the base of the transistor P2 is connected to the collector of the transistor N2, the collector of the transistor P2 is connected to the other end of the primary winding of the capacitor C6, the resistor R10 and the primary winding of the transformer W1, the other end of the resistor R10 is connected with the cathode of the LED1 through the anode of the voltage stabilizer D2, the base of the triode N2 is connected with the other end of the resistor R8, the other end of the resistor R9 and the other end of the capacitor C6, the secondary winding of the transformer W is connected with the voltmeter V and the resistor R11, the other end of the secondary winding of the transformer W is connected with the other end of the voltmeter V and the current transformer A, the other end of the current transformer A is connected with the ground end and the ground end of the overvoltage protector, the A-C ends of the overvoltage protector are sequentially connected with the KB contacts 1, the KC1 and the KD1, and the other end of the resistor R11 is connected with the other ends of the KB contacts 1, the KC1 and the KD 1.

4. The overvoltage protector detector of claim 3, wherein the transformer W, the rectifier T and the capacitor C1 form a buck rectifier filter circuit, the resistors R2-R5, the transistors SCR1-SCR2, the capacitors C4-C5, the relay contact KA1 and the potentiometer RP1 form an electrodeless voltage regulator circuit, the resistors R5-R12, the transistors N1-N2, the transistors P1-P2, the voltage regulator diode D2 and the light emitting diode LED1 form an overcurrent protection circuit, and the transformer W1 forms a boost circuit.

5. The overvoltage protector tester of claim 4, wherein the voltage regulator IC1 is a 7805 three-terminal integrated voltage regulator, the singlechip U1 is an STC89C55 singlechip, and the control switch U2 is an MOC3021 photocoupler.

6. The overvoltage protector detector of claim 5, wherein the transistor SCR1 is a triac and the transistor SCR2 is a triac.

7. The overvoltage protector detector of claim 3, wherein the current and voltage sensing circuit is a current transformer.