CN209132359U - A kind of varistor accident warning device of Surge Protector - Google Patents
A kind of varistor accident warning device of Surge Protector Download PDFInfo
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- CN209132359U CN209132359U CN201821781146.4U CN201821781146U CN209132359U CN 209132359 U CN209132359 U CN 209132359U CN 201821781146 U CN201821781146 U CN 201821781146U CN 209132359 U CN209132359 U CN 209132359U
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Abstract
The utility model provides a kind of varistor accident warning device of Surge Protector; for damaging alarm in the varistor for detecting the Surge Protector being electrically connected with main distributing board; it is characterized by comprising detection unit, processing unit, onsite alarming unit, remote display unit, AC rectification circuits; the input terminal of the AC rectification circuit is electrically connected with main distributing board, and the AC rectification circuit output end is successively electrically connected with the input terminal of detection unit, processing unit, onsite alarming unit, remote display unit；The input terminal of the detection unit is electrically connected with the varistor both ends, and the output end of the detection unit is electrically connected with the processing unit input terminal, and the output end of the processing unit is electrically connected with the input terminal of onsite alarming unit, remote display unit respectively；The utility model structure is simple, safe and reliable, structure replaceability is strong, alarm efficiency and alarm serious forgiveness are high.
Description
Technical field
The utility model relates to a kind of varistor accident warning devices, and in particular to a kind of pressure-sensitive electricity of Surge Protector
Hinder accident warning device.
Background technique
With the rapid development of society, various high tip devices manufactured come out, these equipment all to by internal fault,
Switch operation or the overvoltage be struck by lightning and generated are more sensitive, and this uncertain natural phenomena of being struck by lightning is even more to be difficult to keep away
Exempt from, and generates overvoltage and surge current inside equipment in lightning stroke in order to prevent and make equipment damage, a large amount of surge protection
Device starts to be used, and uses using varistor as the votage limit type Surge Protector of core more extensive.
Currently, the varistor of votage limit type Surge Protector, when not having overvoltage, impedance is all very high, usually million
Europe grade, nearly equivalent to open circuit.When there is overvoltage, impedance quickly falls to several Europe, and surge current will pass through surge
Protector flows into ground, without entering equipment, and then the effect of aerial drainage and pressure limiting is played, to protect other equipment.But
Once varistor aging is broken down, votage limit type Surge Protector will be ineffective, therefore a kind of Surge Protector
Varistor accident warning device just become very necessary.
Summary of the invention
In order to solve the skill that the varistor of votage limit type Surge Protector can be known in time in aging or while breaking down
Art problem, the utility model provide a kind of varistor accident warning device of Surge Protector.
The utility model is used to damage Times in the varistor for detecting the Surge Protector being electrically connected with main distributing board
It is alert, it is characterised in that: including detection unit, processing unit, onsite alarming unit, remote display unit, AC rectification circuit,
The input terminal of the AC rectification circuit is electrically connected with main distributing board, the AC rectification circuit output end successively with detection
The input terminal electrical connection of unit, processing unit, onsite alarming unit, remote display unit；The input terminal of the detection unit with
The varistor both ends electrical connection, the output end of the detection unit are electrically connected with the processing unit input terminal, the place
The output end of reason unit is electrically connected with the input terminal of onsite alarming unit, remote display unit respectively.
Further, the onsite alarming unit can be LED alarm lamp and buzzer, the LED alarm lamp and buzzer
It can be parallel relationship.
Further, the processing unit can be for using STM32F303RCT6 chip as the single-chip microcontroller of core.
Further, the AC rectification circuit includes bridge rectifier unit, filter unit, voltage regulation unit, the bridge-type
Rectification unit output end is electrically connected with filter unit input terminal, and the input terminal of the filter unit output end and voltage regulation unit is electrically connected
It connects.
Further, the detection unit includes current transformer, the bis- aobvious multimeters of fluke 8808A, the Current Mutual Inductance
The input terminal of device is electrically connected with varistor both ends, the output end and the bis- aobvious multimeters of fluke 8808A of the current transformer
Electrical connection.
Further, the remote display unit can be LCD liquid crystal display screen.
The utility model has the following beneficial effects: the utility model and Surge Protector are connected on the same main distributing board,
It and then protect the utility model can also by Surge Protector while detecting the varistor damaged condition；This reality
Onsite alarming is carried out by LED alarm lamp and buzzer two ways simultaneously with novel, and then the alarm for improving the present apparatus is held
Error rate；Remote display unit is but also the damaged condition of the varistor of Surge Protector can be timely by remote worker simultaneously
Know, to improve alarm efficiency；The utility model structure is simple, safe and reliable, structure replaceability is strong, alarm efficiency with
Serious forgiveness of alarming is high.
Detailed description of the invention
Fig. 1 is the overall structure figure of the utility model embodiment；
Fig. 2 is the structural schematic diagram of the onsite alarming unit of the utility model embodiment；
Fig. 3 is the structural schematic diagram of the AC rectification circuit of the utility model embodiment；
Fig. 4 is the structural schematic diagram of the detection unit of the utility model embodiment；
In figure: 1- Surge Protector, 11- varistor, 2- AC rectification circuit, 21- bridge rectifier unit, 22- filter
Wave unit, 23- voltage regulation unit, 3- detection unit, 31- current transformer, 4- processing unit, 5- onsite alarming unit, 51- buzzing
Device, 52-LED alarm lamp, 6- remote display unit.
Specific embodiment
It, below will be right in order to illustrate more clearly of the utility model embodiment and/or technical solution in the prior art
According to Detailed description of the invention specific embodiment of the present utility model.It should be evident that the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings, and obtains other embodiments.In addition, being related to belonging to for orientation only indicates each component
Between relative positional relationship, rather than absolute positional relation.
As shown in Figure 1.The utility model provides a kind of varistor accident warning device of Surge Protector, is used for
Detect that the varistor 11 for the Surge Protector 1 being electrically connected with main distributing board damages alarm, it is characterised in that: including detection
Unit 3, processing unit 4, onsite alarming unit 5, remote display unit 6, AC rectification circuit 2, the AC rectification electricity
The input terminal on road 2 is electrically connected with main distributing board, 2 output end of AC rectification circuit successively with detection unit 3, processing unit
4, the input terminal electrical connection of onsite alarming unit 5, remote display unit 6；The input terminal of the detection unit 3 and the pressure-sensitive electricity
The electrical connection of 11 both ends is hindered, the output end of the detection unit 3 is electrically connected with 4 input terminal of processing unit, the processing unit 4
Output end be electrically connected respectively with the input terminal of onsite alarming unit 5, remote display unit 6.
Surge Protector 1 described in the utility model is electrically connected with AC rectification circuit 2 by the same main distributing board,
To make the utility model that can also be protected by Surge Protector while detecting 11 damaged condition of varistor.Together
When main distributing board can also by AC rectification circuit 2 by alternating current be integrated into low-voltage DC come for detection unit 3, processing
Unit 4, onsite alarming unit 5 are powered.
Varistor 11 described in the embodiments of the present invention is partly led with ZnO metal oxide as main component
Body nonlinear resistance, the detection unit first pass through current transformer 31 and are handled the leakage current on varistor 11 to come
To the tested electric current reduced by certain multiple, by tested electric current by certain when being such as tested 1/10 that electric current is leakage current, and showing
The actual numerical value of the leakage current of varistor 11 can be obtained in multiple processing；Since when circuit generates surge, meeting is electric with height
Stream, thus detection device can be effectively protected using current transformer 31, at the same the influences of 31 pairs of current transformer measurements also compared with
It is small, the detection accuracy of detection unit 3 is guaranteed.The bis- aobvious multimeters of fluke 8808A may be selected in the detection unit 3
Simultaneously to detect the surge voltage of the varistor 11 with leakage current, and then the real-time surge of varistor 11 is electric
The voltage value of pressure and the current value of leakage current send processing unit 4 to by the bis- aobvious multimeters of fluke 8808A.
Fluke 8808A digital multimeter used in present embodiment possesses miscellaneous function, can measure electricity
Pressure, resistance and electric current etc., and the basic accuracy of DC voltage is up to 0.015 %.Since it is carried out for some common measurements
Optimization, user extremely can quickly and easily complete to measure.The included mould electricity of the bis- aobvious multimeters of fluke 8808A and number electricity
Conversion function, and information exchange can be carried out by RS-232 serial ports and processing unit 4.
In present embodiment processing unit 4 be using STM32F303RCT6 chip as the single-chip microcontroller of core,
STM32F103RCT6 is a kind of integrated circuit of embedded-microcontroller, and core size is 32, and speed is 72MHz, program
Memory capacity is 256KB, and program storage type is FLASH, and RAM capacity is 48K, compared with 51 series monolithics compared to sampling with
Processing speed faster, advantageously for the utility model.The single-chip microcontroller is by preset value to the wave of the varistor 11
It gushes the voltage value of voltage and the current value of leakage current, resistance value is compared, the preset value is by processing unit 4 according to being protected
Depending on the concrete condition of equipment, if testing result meets preset value, show that varistor 11 has occurred and that failure.
As shown in Figure 3.AC rectification circuit described in the embodiments of the present invention 2 includes bridge rectifier unit
21, filter unit 22, voltage regulation unit 23,21 output end of bridge rectifier unit are electrically connected with 22 input terminal of filter unit, institute
22 output end of filter unit is stated to be electrically connected with the input terminal of voltage regulation unit 23.The bridge rectifier unit 21 is used for high-voltage alternating
Electricity is converted to low-voltage DC, and the filter unit 22 is used to eliminate through the interference in treated the voltage of bridge rectifier unit 21
Pulse, the voltage regulation unit 23 make detection unit 3, processing unit 4, onsite alarming for obtaining stable operating voltage
Unit 5 can work normally.
As shown in the figures 1 and 2.Onsite alarming unit 5 in the utility model embodiment is LED alarm lamp 52 and buzzer
51.The LED alarm lamp 52 and buzzer 51 are parallel relationship, when detecting 11 failure of varistor, the buzzer 51
It can sound an alarm, the LED alarm lamp 52 can be bright.And LED alarm lamp 52 and buzzer 51 are mutually indepedent, when one of failure
When, the onsite alarming function of the utility model is unaffected, to improve the fault-tolerance of onsite alarming unit 5.
The utility model embodiment medium-long range display unit 6 is LCD liquid crystal display screen, can be by the detection unit 4
The voltage value of the surge voltage of the varistor 11 detected and current value, the resistance value information of leakage current show,
The remote display unit 6 can also show 11 fault condition of varistor, and then administrative staff is facilitated remotely to monitor.When pressure-sensitive electricity
Resistance 11 is when breaking down, if the onsite alarming unit 5 damage or scene completely nobody when, administrative staff can be by remotely showing
Show that unit 6 is found the problem in time, and then relevant staff can be notified to handle the failure of varistor 11 in time, to improve
The 11 fault alarm efficiency of varistor of the utility model.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (6)
1. the varistor accident warning device of a kind of Surge Protector, for detecting the surge being electrically connected with main distributing board
The varistor (11) of protector (1) damages alarm, it is characterised in that: including detection unit (3), processing unit (4), scene
Alarm unit (5), remote display unit (6), AC rectification circuit (2), the input terminal of the AC rectification circuit (2) with
Main distributing board electrical connection, AC rectification circuit (2) output end successively with detection unit (3), processing unit (4), scene
The input terminal electrical connection of alarm unit (5), remote display unit (6)；The input terminal and the pressure-sensitive electricity of the detection unit (3)
The electrical connection of (11) both ends is hindered, the output end of the detection unit (3) is electrically connected with the processing unit (4) input terminal, the place
The output end of reason unit (4) is electrically connected with the input terminal of onsite alarming unit (5), remote display unit (6) respectively.
2. a kind of varistor accident warning device of Surge Protector as described in claim 1, it is characterised in that: described existing
Field alarm unit (5) is LED alarm lamp (52) and buzzer (51).
3. a kind of varistor accident warning device of Surge Protector as described in claim 1, it is characterised in that: the place
Managing unit (4) is using STM32F303RCT6 chip as the single-chip microcontroller of core.
4. a kind of varistor accident warning device of Surge Protector as described in claim 1, it is characterised in that: the friendship
Galvanic electricity rectification circuit (2) includes bridge rectifier unit (21), filter unit (22), voltage regulation unit (23), the bridge rectifier list
First (21) output end is electrically connected with filter unit (22) input terminal, filter unit (22) output end and voltage regulation unit (23)
Input terminal electrical connection.
5. a kind of varistor accident warning device of Surge Protector as described in claim 1, it is characterised in that: the inspection
Surveying unit (3) includes current transformer (31), the bis- aobvious multimeters of fluke 8808A, the input terminal of the current transformer (31)
It is electrically connected with varistor (11) both ends, the bis- aobvious multimeter electricity of the output end and fluke 8808A of the current transformer (31)
Connection.
6. a kind of varistor accident warning device of Surge Protector as described in claim 1, it is characterised in that: described remote
Journey display unit (6) is LCD liquid crystal display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821781146.4U CN209132359U (en) | 2018-10-31 | 2018-10-31 | A kind of varistor accident warning device of Surge Protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821781146.4U CN209132359U (en) | 2018-10-31 | 2018-10-31 | A kind of varistor accident warning device of Surge Protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209132359U true CN209132359U (en) | 2019-07-19 |
Family
ID=67233418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821781146.4U Active CN209132359U (en) | 2018-10-31 | 2018-10-31 | A kind of varistor accident warning device of Surge Protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209132359U (en) |
-
2018
- 2018-10-31 CN CN201821781146.4U patent/CN209132359U/en active Active
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