Fault rapid positioning circuit and diode rectification system

Abstract

The utility model relates to the technical field of rectification, in particular to a fast fault positioning circuit and a diode rectification system, which are applied to a fast fuse of a diode rectification circuit, and the circuit comprises a microswitch, a light-emitting unit, an isolation unit and an alarm unit, the microswitch is arranged at the top of the fast-acting fuse and is configured to be matched with the fast-acting fuse and sense the fusing action of the fast-acting fuse, an input pin of the microswitch is connected to the common end, a first output pin of the microswitch is connected to the input end of the light-emitting unit, the output end of the light-emitting unit is connected to the input end of the isolation unit, and a second output pin of the isolation unit is connected to the output end of the isolation unit. The output end of the isolation unit is connected to the input end of the alarm unit. According to the utility model, the button of the microswitch is triggered to release through the fusing of the fast-acting fuse, so that the contact state of the microswitch is changed, the light-emitting unit is switched on, and then the light-emitting unit emits light, so that the fusing fault of the fast-acting fuse at the corresponding position can be intuitively known according to the light-emitting unit, and the fast positioning of the fault is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectification technical field, specifically, relate to a kind of fault fast positioning circuit and diode rectifier system. BACKGROUND

[0002] Fast fuse is a kind of fuse, as important component in large rectifier power electronic equipment, bears rectification and protection function.In diode rectifier circuit, its performance directly affects the safe operation of the entire circuit, however, due to complex working environment, large current fluctuation and other factors, fast fuse is prone to failure, leading to rectification circuit interruption or damage.

[0003] Traditional fault positioning method usually relies on artificial field inspection and offline test;Fast melt detection system can real-time, tour monitoring the state of fast fuse in high-power rectification system;Fast melt protection of previous rectification equipment adopts fast fuse switch value parallel output single alarm signal, or utilizes pulse transformer to output voltage value different after fast melt on-off on the same arm to determine one or two bads.But the above three methods cannot quickly locate the specific fuse position of fast fuse. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of fault fast positioning circuit and diode rectifier system, by setting microswitch, luminous unit, isolation unit and alarm unit, fast positioning fault point, to solve how to realize the technical problem of the specific fuse position of fast fuse.

[0005] The utility model realizes by the following technical scheme: a kind of fault fast positioning circuit, it is applied to diode rectifier circuit fast fuse, circuit includes microswitch, luminous unit, isolation unit and alarm unit;

[0006] Wherein, the microswitch is located at the top of fast fuse, is configured to cooperate with the fast fuse, senses the fuse action of the fast fuse, the input pin of the microswitch is connected to public end, the first output pin of the microswitch is connected to the input end of luminous unit, the output end of the luminous unit is connected to the input end of isolation unit, the output end of the isolation unit is connected to the input end of alarm unit.

[0007] According to a preferred embodiment, the second output pin of the microswitch is connected to single-chip microcomputer, and the single-chip microcomputer is communicated and connected with host computer.

[0008] According to a preferred embodiment, the circuit further includes a voltage stabilizing unit connected between the microswitch and the luminous unit.

[0009] According to a preferred embodiment, the voltage stabilizing unit is composed of a resistor R1 and a voltage stabilizing chip.

[0010] The input end of the resistor R1 is connected with the first output pin of the microswitch, the output end of the resistor R1 is connected with the 1 pin of the voltage stabilizing chip, the 2 pin of the voltage stabilizing chip is connected with the input end of the light emitting unit, and the 3 pin of the voltage stabilizing chip is grounded.

[0011] According to a preferred embodiment, the light emitting unit is a light emitting diode.

[0012] According to a preferred embodiment, the isolation unit is an optoelectronic coupler, the output end of the light emitting unit is connected with the 1 pin of the input side of the optoelectronic coupler, the 2 pin of the input side of the optoelectronic coupler is grounded, the 3 pin of the output side of the optoelectronic coupler is grounded, and the 4 pin of the output side of the optoelectronic coupler is connected with the input end of the alarm unit.

[0013] According to a preferred embodiment, the alarm unit has a buzzer.

[0014] According to a preferred embodiment, the alarm unit further comprises a resistor R2, a resistor R3, a resistor R4 and a triode Q1.

[0015] The first end of the resistor R2 is connected with the 4 pin of the output side of the optoelectronic coupler, the second end of the resistor R2 is connected to the first end of the resistor R3 and the first end of the resistor R4, the second end of the resistor R4 is connected to the base of the triode Q1, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected with the 1 pin of the buzzer, and the second end of the resistor R3 is connected with the 2 pin of the buzzer to the power supply.

[0016] According to a preferred embodiment, the microswitches corresponding to different fast fuses in the diode rectifier circuit and the light emitting units are connected to the same alarm unit through the isolation unit.

[0017] The utility model also provides a diode rectifier system, including the fault fast positioning circuit as above-mentioned.

[0018] The utility model provides a kind of fault fast positioning circuit and diode rectifier system's technical scheme at least has following advantages and beneficial effects with (1) the utility model changes the contact state of microswitch by the button release of microswitch triggered by fast fuse fuse, and connects luminous unit, and then makes luminous unit emit light, can intuitively know that corresponding position's fast fuse has fused fault according to luminous unit, realize the fast positioning of fault;(2) by single-chip microcomputer, the data of microswitch action are collected, and the fast fuse data collected are uploaded to host computer, it is convenient for operator to carry out fault monitoring and analysis in remote place, realize remote fault positioning and management;(3) voltage stabilization unit can stabilize the voltage output by microswitch at a particular level, ensure that the voltage provided to light emitting diode always remains in its normal operating voltage range;(4) the circuit of resistance R2, resistance R3, resistance R4 and triode Q1 in alarm unit can provide suitable driving current for buzzer, so that buzzer can work normally and emit sound with enough intensity to alarm;The circuit design can control the working state of buzzer, ensure accurate alarm when receiving fault signal;(5) it can realize the centralized alarm of multiple fast fuses;When any one fast fuse is fused, alarm unit can all send alarm signal, it is convenient for staff to locate the position of fast fuse where fault occurs, improve troubleshooting efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is simple principle schematic diagram of the fault fast positioning circuit provided for the utility model embodiment 1;

[0020] Figure 2 It is principle diagram of the fault fast positioning circuit provided for the utility model embodiment 3. DETAILED DESCRIPTION

[0021] To make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely in the following with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, instead of all the embodiment.Usually the components of the utility model embodiment described and shown in the drawing here can be arranged and designed in various different configurations.

[0022] Embodiment 1

[0023] Refer to Figure 1 As shown in, Figure 1The fault rapid positioning circuit is applied to a diode rectifier circuit rapid fuse, so as to solve the problem that the specific fuse breaking position of the rapid fuse cannot be rapidly positioned.

[0024] In some embodiments of the present embodiment, the micro switch is arranged at the top of the rapid fuse and is configured to cooperate with the rapid fuse to sense the fuse breaking action of the rapid fuse.

[0025] In the present embodiment, the rapid fuse is preferably a rapid fuse with a fuse indicator; here, the cooperation of the micro switch and the rapid fuse is described by taking the rapid fuse with the fuse indicator as an example: when the fuse body of the rapid fuse is broken, the indicator of the rapid fuse will pop out or displace, and this displacement will be transmitted to the micro switch through a transmission rod or other mechanism, so that the button of the micro switch is released, thereby changing the contact state of the micro switch and turning on the light emitting unit.

[0026] The input pin of the micro switch SW1 is connected to the common end, and the first output pin of the micro switch SW1 is connected to the input end of the light emitting unit; in one embodiment of the present embodiment, the light emitting unit is a light emitting diode; specifically, after the micro switch SW1 acts, the light emitting diode D1 is connected and emits light, so that the user can intuitively know that the rapid fuse at the corresponding position has a fuse breaking fault, and the rapid positioning of the fault is realized.

[0027] The output end of the light emitting diode D1 is connected to the input end of the isolation unit; in one embodiment of the present embodiment, the isolation unit is an optoelectronic coupler; specifically, the optoelectronic coupler U2 can transmit the signal of the light emitting diode D1 to the alarm unit after isolation, prevent interference from other parts of the circuit, ensure that the alarm unit can accurately receive the fault signal, and then trigger the alarm.

[0028] The output end of the optoelectronic coupler U2 is connected to the input end of the alarm unit; in one embodiment of the present embodiment, the output end of the light emitting diode D1 is connected to the 1 pin of the input side of the optoelectronic coupler U2, the 2 pin of the input side of the optoelectronic coupler U2 is grounded, the 3 pin of the output side of the optoelectronic coupler U2 is grounded, and the 4 pin of the output side of the optoelectronic coupler U2 is connected to the input end of the alarm unit; specifically, after receiving the signal transmitted by the optoelectronic coupler U2, the alarm unit alarms to prompt relevant personnel that the rapid fuse breaking fault has occurred in a sound or other manner, so as to realize the rapid positioning and notification of the fault.

[0029] Embodiment 2

[0030] The embodiment is based on the technical solution provided in Embodiment 1, and realizes remote alarm while realizing local fault alarm of the fast fuse through the alarm unit.

[0031] In some embodiments of the embodiment, the second output pin of the microswitch SW1 is connected to the single-chip microcomputer, and the data of the microswitch action is collected through the single-chip microcomputer; the single-chip microcomputer is in communication connection with the upper computer, and then the collected fast fuse melting data is uploaded to the upper computer, so as to facilitate the remote fault monitoring and analysis of the operator, and realize remote fault positioning and management.

[0032] Embodiment 3

[0033] The embodiment is based on the technical solution provided in Embodiment 1, and optimizes the stability of the circuit.

[0034] In some embodiments of the embodiment, the circuit further comprises a voltage stabilizing unit connected between the microswitch SW1 and the light-emitting diode D1. Specifically, the voltage stabilizing unit is composed of a resistor R1 and a voltage stabilizing chip U1; wherein the input end of the resistor R1 is connected with the first output pin of the microswitch SW1, the output end of the resistor R1 is connected with the 1 pin of the voltage stabilizing chip U1, the 2 pin of the voltage stabilizing chip U1 is connected with the input end of the light-emitting diode D1, and the 3 pin of the voltage stabilizing chip U1 is grounded.

[0035] Specifically, when the microswitch SW1 senses the melting action of the fast fuse, it will generate a corresponding electrical signal output, but the voltage of the signal may be unstable due to factors such as power fluctuations, interference from other elements in the circuit, etc. The voltage stabilizing unit can stabilize the voltage output by the microswitch SW1 at a specific level, ensuring that the voltage provided to the light-emitting diode D1 always remains within its normal operating voltage range. For example, when the voltage appears to fluctuate instantaneously, the voltage stabilizing unit will lower the excessively high voltage to an appropriate value; conversely, when the power voltage drops, the voltage stabilizing unit will raise or maintain the voltage, ensuring that the light-emitting diode D1 will not be damaged due to excessively high voltage or unable to emit light normally due to excessively low voltage.

[0036] Embodiment 4

[0037] The embodiment is based on the technical solution provided in Embodiment 3, and further describes the alarm unit:

[0038] In some embodiments of the present embodiment, the alarm unit comprises a buzzer, a resistor R2, a resistor R3, a resistor R4 and a transistor Q1; wherein the first end of the resistor R2 is connected to the 4-pin of the output side of the photoelectric coupler U2, the second end of the resistor R2 is connected to the first end of the resistor R3 and the first end of the resistor R4, the second end of the resistor R4 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the 1-pin of the buzzer, and the second end of the resistor R3 is connected to the 2-pin of the buzzer and the power supply; in some embodiments, the power supply is 24V.

[0039] Specifically, the circuit composed of the resistor R2, the resistor R3, the resistor R4 and the transistor Q1 in the alarm unit can provide a suitable driving current for the buzzer, so that the buzzer can work normally and issue a sound of sufficient intensity for alarm; the circuit design can control the working state of the buzzer and ensure accurate alarm when receiving a fault signal.

[0040] Further, the microswitches (SW1, SW2, SW3) corresponding to different fast fuses in the diode rectifier circuit, the voltage stabilizing unit (R1, U1, R5, U3, R6, U5) and the light emitting unit (D1, D2, D3) are all connected to the same alarm unit through the isolation unit (U2, U4, U6). Specifically, the above arrangement can realize centralized alarm for multiple fast fuses; when any one of the fast fuses is fused, the alarm unit can issue an alarm signal, which facilitates the staff to quickly locate the position of the fast fuse where the fault occurs and improves the troubleshooting efficiency.

[0041] Embodiment 5

[0042] Based on the technical solutions provided in any one of embodiments 1 to 9, the present embodiment provides a diode rectification system, which comprises the fault fast positioning circuit according to any one of embodiments 1 to 4.

[0043] The above is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously modified and changed. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A circuit for fast fault location, characterized in that, The application is applied to a diode rectifier circuit fast fuse, and the circuit comprises a micro switch, a light-emitting unit, an isolation unit and an alarm unit. The micro switch is arranged on the top of the fast fuse and is configured to cooperate with the fast fuse to sense the fuse action of the fast fuse, the input pin of the micro switch is connected to a common terminal, the first output pin of the micro switch is connected to the input terminal of the light-emitting unit, the output terminal of the light-emitting unit is connected to the input terminal of the isolation unit, and the output terminal of the isolation unit is connected to the input terminal of the alarm unit.

2. The fault rapid-locating circuit of claim 1, wherein, The second output pin of the micro switch is connected to a single-chip microcomputer, and the single-chip microcomputer is in communication connection with an upper computer.

3. The fault rapid-locating circuit of claim 1, wherein, The circuit further comprises a voltage stabilizing unit connected between the micro switch and the light-emitting unit.

4. The fault rapid-locating circuit of claim 3, wherein, The voltage stabilizing unit is composed of a resistor R1 and a voltage stabilizing chip. The input terminal of the resistor R1 is connected to the first output pin of the micro switch, the output terminal of the resistor R1 is connected to the 1 pin of the voltage stabilizing chip, the 2 pin of the voltage stabilizing chip is connected to the input terminal of the light-emitting unit, and the 3 pin of the voltage stabilizing chip is grounded.

5. The fault rapid-locating circuit of claim 1, wherein, The light-emitting unit is a light-emitting diode.

6. The fault rapid-locating circuit of claim 1, wherein, The isolation unit is an optoelectronic coupler, the output terminal of the light-emitting unit is connected to the 1 pin of the input side of the optoelectronic coupler, the 2 pin of the input side of the optoelectronic coupler is grounded, the 3 pin of the output side of the optoelectronic coupler is grounded, and the 4 pin of the output side of the optoelectronic coupler is connected to the input terminal of the alarm unit.

7. The fault rapid-locating circuit of claim 1, wherein, The alarm unit has a buzzer.

8. The fault rapid-locating circuit of claim 7, wherein, The alarm unit further comprises a resistor R2, a resistor R3, a resistor R4 and a triode Q1. The first terminal of the resistor R2 is connected to the 4 pin of the output side of the optoelectronic coupler, the second terminal of the resistor R2 is connected to the first terminal of the resistor R3 and the first terminal of the resistor R4, the second terminal of the resistor R4 is connected to the base of the triode Q1, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected to the 1 pin of the buzzer, and the second terminal of the resistor R3 is connected to the 2 pin of the buzzer and a power supply.

9. The fault locating circuit of any one of claims 1 to 8, wherein, The micro switch and the light-emitting unit corresponding to different fast fuses in the diode rectifier circuit are connected to the same alarm unit through the isolation unit.

10. A diode rectification system characterized by, The fault fast positioning circuit comprises the circuit according to any one of claims 1 to 9.

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