CN208367125U - A kind of fault electric arc detection equipment - Google Patents
A kind of fault electric arc detection equipment Download PDFInfo
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- CN208367125U CN208367125U CN201821084006.1U CN201821084006U CN208367125U CN 208367125 U CN208367125 U CN 208367125U CN 201821084006 U CN201821084006 U CN 201821084006U CN 208367125 U CN208367125 U CN 208367125U
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- electric arc
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Abstract
The utility model provides a kind of fault electric arc detection equipment, it includes power interface, control switch, controller, parallel arc generator, serial arc generator, measuring circuit, loading interfaces and alarm unit, the input terminal of the output end connection control switch of power interface, parallel arc generator described in the output end of control switch, serial arc generator, measuring circuit and loading interfaces, parallel arc generator, serial arc generator and loading interfaces are connected in series forming circuit, measuring circuit connects in the loop, the fault electric arc quantity is simultaneously sent to controller by its fault electric arc quantity being configured in measurement circuit, controller is internally provided with fault electric arc threshold value, alarm unit is used to alarm when the fault electric arc quantity in circuit is greater than fault electric arc threshold value.Its structure is simple, can detection fault electric arc promptly and accurately, generate fault electric arc quantity it is more when, promptly and accurately alarm.
Description
Technical field
The utility model relates to fault electric arc detection fields, more particularly to a kind of fault electric arc detection equipment.
Background technique
Fault electric arc easily causes safety accident, brings great threat with living safety to production, has been subjected to the weight of people
Depending on.In the 1990s, the U.S. has formulated UL1699 arc-fault circuit interrupter standard；After on August 1st, 2004, requirement city of the U.S.
The domestic air conditioning of field sale must have the plug of fault electric arc cut-out function.The country starts late to the research of fault electric arc,
It in recent years is in quickly increase trend；National standard on June 24th, 2014 issues " the 4th part of appliance fire monitoring system: fault electric arc
Detector " on September 3rd, 2014 publication " the general requirement of electric arc fault protection electric appliance (AFDD) " in, respectively to industry with
10KW or less and the fault electric arc device of household and similar applications alternating current circuit propose requirement and standard in civil buildings.
Regulation is made that alarm performance in standard, it is desirable that the fault electric arc number that the half period occurs in 1s is more than or equal to 14
When issue alarm signal, number is less than or equal to that sound and light alarm signal and control signal should not be issued when 9.Fault electric arc it is main
Harm is to cause fire, and when fault electric arc generates, central temperature is up to 3000 DEG C~4000 DEG C, and with metal molten
Object splash comes out.The high temperature high fever that fault electric arc generates, the route insulating layer that easily ignites causes route on fire, if in fault point
Nearby there are when combustible, also easily igniting flammable items and lead to the generation of fire.In the prior art, lack to fault electric arc
The equipment detected cannot find fault electric arc in time, or there is a situation where detection inaccuracy, be easy to cause irremediable
Loss.
Utility model content
In order to overcome the drawbacks of the prior art, the utility model provides a kind of fault electric arc detection equipment, and structure is simple,
Can detection fault electric arc promptly and accurately, generate fault electric arc quantity it is more when, promptly and accurately alarm.
Specifically, the utility model provides a kind of fault electric arc detection equipment comprising power interface, control switch, control
Device, parallel arc generator, serial arc generator, measuring circuit, loading interfaces and alarm unit processed,
The output end of the power interface connects the input terminal of the control switch, the output end connection of the control switch
The parallel arc generator, serial arc generator, measuring circuit and loading interfaces, the parallel arc generator, string
Connection electric arc generator and loading interfaces are connected in series forming circuit,
The measuring circuit connects the fault electric arc quantity being configured in measurement circuit in the loop and will the event
Barrier electric arc quantity is sent to controller, and the controller is internally provided with fault electric arc threshold value, and the alarm unit is for working as
Fault electric arc quantity in circuit is alarmed when being greater than fault electric arc threshold value；
Serial arc generator includes pedestal, the first insulated clamp and sliding block that are set on the base, and the sliding block is attached
It is closely provided with the slide position regulating mechanism for adjusting its lateral displacement, the slide position regulating mechanism is configured to make
Sliding block can be provided with the second insulated clamp along the pedestal transverse shifting, the sliding block top, first insulated clamp
It is configured to clamping first electrode, second insulated clamp is configured to clamping second electrode, and the second electrode can
Relative to the first electrode close to or far from；
The parallel arc generator includes third insulated clamp and the 4th insulated clamp, on the third insulated clamp
It is provided with the first conductive column, the second conductive column, first conductive column and described second are provided on the 4th insulated clamp
Conductive column is arranged in parallel.
Preferably, the slide position regulating mechanism includes sliding screw and handwheel.
Preferably, the first electrode and second electrode are separately connected one in positive pole or power cathode.
Preferably, the measuring circuit includes current transformer, signal conditioning circuit, analog-digital converter and control output
Circuit, with the current signal in electrical circuit, being configured in detection circuit, the electric current is mutual for current transformer setting
The output end of sensor connects the input terminal of the signal conditioning circuit, and the output end of the signal conditioning circuit connects the modulus
The input terminal of converter, the output end of the analog-digital converter connect the output end of the controller.
Preferably, the signal conditioning circuit is provided with low-pass filter, is configured to filter out current transformer generation
Electric signal in High-frequency Interference, the cutoff frequency of the low-pass filter is 100Hz.
Preferably, the alarm unit is combined aural and visual alarm.
Preferably, the combined aural and visual alarm is LED light and buzzer.
Preferably, the control output circuit is provided with light-coupled isolation unit.
Preferably, the first electrode is cylindrical graphite stick, and the second electrode uses top for the copper rod of cone.
Preferably, the first insulated clamp, the second insulated clamp, third insulated clamp and the 4th insulated clamp are bakelite
Clamp.
Compared with prior art, the utility model has the following beneficial effects:
1. the utility model provides a kind of fault electric arc detection equipment, structure is simple, can detection promptly and accurately therefore
Hinder electric arc, when generation fault electric arc quantity is more, promptly and accurately alarm, and electric arc inspection can be connected by means of test interface
Device is surveyed, detects whether it can work normally.
2. the distance between two electrodes of serial arc generator of the utility model can be adjusted by slide position
Mechanism is adjusted, convenient suitably apart from interior generation electric arc.
3. the signal conditioning circuit of the utility model is provided with low-pass filter, configuration can filter out current transformer production
High-frequency Interference in raw electric signal keeps measurement more accurate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic block diagram of the utility model；
Fig. 3 is the structural schematic diagram of the serial arc generator of the utility model；And
Fig. 4 is the structural schematic diagram of the parallel arc generator of the utility model.
Specific embodiment
The exemplary embodiment, feature and aspect of the utility model are described in detail below with reference to attached drawing.It is identical in attached drawing
Appended drawing reference indicate element functionally identical or similar.Although the various aspects of embodiment are shown in the attached drawings, remove
It non-specifically points out, it is not necessary to attached drawing drawn to scale.
Specifically, the utility model provides a kind of fault electric arc detection equipment, as shown in Figures 1 and 2 comprising power supply connects
Mouthful 1, control switch 2, controller 3, parallel arc generator 4, serial arc generator 5, measuring circuit, loading interfaces 6 and
Alarm unit 7.
The output end of power interface 1 connects the input terminal of control switch 2, parallel arc described in the output end of control switch 2
Generator, serial arc generator, measuring circuit and loading interfaces, parallel arc generator 4, serial arc generator and
Loading interfaces 6 are connected in series forming circuit.
Measuring circuit connects the fault electric arc quantity being configured in measurement circuit in the loop and by failure electricity
Arc quantity is sent to controller, and controller 3 is internally provided with fault electric arc threshold value, and alarm unit 7 is used for when the event in circuit
Barrier electric arc quantity is alarmed when being greater than fault electric arc threshold value.
Measuring circuit includes current transformer 8, signal conditioning circuit 9, analog-digital converter 10 and controls output circuit 11,
The setting of current transformer 8 is with the current signal in electrical circuit, being configured in detection circuit, the output of current transformer 8
Hold the input terminal of connection signal conditioning circuit 9, the input terminal of the output end connection analog-digital converter 10 of signal conditioning circuit 9, mould
The output end of the output end connection controller 3 of number converter 10.The electric signal of simulation is converted to digital signal by analog-digital converter,
It is transferred to controller 3.Controller 3 can connect host by communication interface, and host can remotely supervise controller 3
Control.
Signal conditioning circuit 9 is provided with low-pass filter, is configured in the electric signal for filtering out current transformer generation
High-frequency Interference, the cutoff frequency of low-pass filter is 100Hz.
Control output circuit 11 is provided with light-coupled isolation unit.Light-coupled isolation unit is configured to protection circuit safety.
Preferably, alarm unit 7 is combined aural and visual alarm.Combined aural and visual alarm is LED light and buzzer.
Controller 3 judges that electric arc quantity is more than threshold value, and control combined aural and visual alarm issues alarm signal, while defeated by controlling
Circuit disconnects power supply supply as control switch transmission open command out.
Preferably, it is additionally provided with test interface 12, test interface is for connecting tested fault electric arc detector, test interface
In the loop, when an electrical arc occurs, tested fault electric arc detector can generate alarm, can compare with test result for series connection, examine
Test tested fault electric arc detector performance.
As shown in figure 3, serial arc generator 5 include pedestal 51, be arranged in pedestal 51 the first insulated clamp 52 and
Sliding block 53, sliding block 53 are nearby provided with the slide position regulating mechanism for adjusting its lateral displacement, slide position regulating mechanism
Be configured to enable sliding block 53 along the pedestal transverse shifting, slide position regulating mechanism includes sliding screw 55 and handwheel
56.53 top of sliding block is provided with the second insulated clamp 54, and the first insulated clamp 52 is configured to clamping first electrode 510, the
Two insulated clamps 54 be configured to clamping second electrode 511, second electrode 511 can it is close relative to first electrode 510 or
It is separate.First electrode and second electrode are separately connected one in positive pole or power cathode.
Preferably, first electrode 510 is cylindrical graphite stick, and second electrode 511 is the copper rod that top is cone.
The distance between two electrodes of serial arc generator 5 can be adjusted by slide position regulating mechanism,
Conveniently suitably apart from interior generation electric arc.
As shown in figure 4, parallel arc generator 4 includes that third insulated clamp 41 and the 4th insulated clamp 42, third are exhausted
It is provided with the first conductive column 411 on edge clamp 41, the second conductive column 412, the first conductive column are provided on the 4th insulated clamp 42
411 are arranged in parallel with the second conductive column 412.
Preferably, the first insulated clamp, the second insulated clamp, third insulated clamp and the 4th insulated clamp are bakelite
Clamp.
Compared with prior art, the utility model has the following beneficial effects:
1. the utility model provides a kind of fault electric arc detection equipment, structure is simple, can detection promptly and accurately therefore
Hinder electric arc, when generation fault electric arc quantity is more, promptly and accurately alarm, and electric arc inspection can be connected by means of test interface
Device is surveyed, detects whether it can work normally.
2. the distance between two electrodes of serial arc generator of the utility model can be adjusted by slide position
Mechanism is adjusted, convenient suitably apart from interior generation electric arc.
3. the signal conditioning circuit of the utility model is provided with low-pass filter, configuration can filter out current transformer production
High-frequency Interference in raw electric signal keeps measurement more accurate.
Finally, it should be noted that above-described each embodiment is merely to illustrate the technical solution of the utility model, rather than
It is limited；Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art
It is understood that it can still modify to technical solution documented by previous embodiment, or to part of or whole
Technical characteristic is equivalently replaced；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution the utility model
The range of each embodiment technical solution.
Claims (10)
1. a kind of fault electric arc detection equipment, it is characterised in that: it includes power interface, control switch, controller, parallel arc
Generator, serial arc generator, measuring circuit, loading interfaces, test interface and alarm unit,
The output end of the power interface connects the input terminal of the control switch, described in the output end connection of the control switch
Parallel arc generator, serial arc generator, measuring circuit and loading interfaces, the parallel arc generator, series electrical
Arc generator and loading interfaces are connected in series forming circuit,
Measuring circuit connection in the loop, the fault electric arc quantity that is configured in measurement circuit and by the failure electricity
Arc quantity is sent to controller, and the controller is internally provided with fault electric arc threshold value, and the alarm unit is for working as circuit
In fault electric arc quantity be greater than fault electric arc threshold value when alarm；
The test interface is for connecting tested fault electric arc detector；
The serial arc generator includes pedestal, the first insulated clamp and sliding block that are set on the base, and the sliding block is attached
It is closely provided with the slide position regulating mechanism for adjusting its lateral displacement, the slide position regulating mechanism is configured to make
Sliding block can be provided with the second insulated clamp along the pedestal transverse shifting, the sliding block top, first insulated clamp
It is configured to clamping first electrode, second insulated clamp is configured to clamping second electrode, and the second electrode can
Relative to the first electrode close to or far from；
The parallel arc generator includes third insulated clamp and the 4th insulated clamp, is arranged on the third insulated clamp
There is the first conductive column, the second conductive column, first conductive column and second conduction are provided on the 4th insulated clamp
Column is arranged in parallel.
2. fault electric arc detection equipment according to claim 1, it is characterised in that: the slide position regulating mechanism includes
Sliding screw and handwheel.
3. fault electric arc detection equipment according to claim 1, it is characterised in that: the first electrode and second electrode point
It Lian Jie not one in positive pole or power cathode.
4. fault electric arc detection equipment according to claim 1, it is characterised in that: the measuring circuit includes Current Mutual Inductance
Device, signal conditioning circuit, analog-digital converter and control output circuit, current transformer setting in electrical circuit,
The current signal being configured in detection circuit, the output end of the current transformer connect the input of the signal conditioning circuit
End, the output end of the signal conditioning circuit connect the input terminal of the analog-digital converter, the output end of the analog-digital converter
Connect the output end of the controller.
5. fault electric arc detection equipment according to claim 4, it is characterised in that: the signal conditioning circuit is provided with low
Bandpass filter, is configured to filter out the High-frequency Interference in the electric signal of current transformer generation, and the low-pass filter is cut
Only frequency is 100Hz.
6. fault electric arc detection equipment according to claim 1, it is characterised in that: the alarm unit is sound-light alarm
Device.
7. fault electric arc detection equipment according to claim 6, it is characterised in that: the combined aural and visual alarm is LED indication
Lamp and buzzer.
8. fault electric arc detection equipment according to claim 4, it is characterised in that: the control output circuit is provided with light
Coupling isolated location.
9. fault electric arc detection equipment according to claim 1, it is characterised in that: the first electrode is cylindrical graphite
Stick, the second electrode are the copper rod with conical top.
10. fault electric arc detection equipment according to claim 1, it is characterised in that: first insulated clamp, second are absolutely
Edge clamp, third insulated clamp and the 4th insulated clamp are bakelite clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821084006.1U CN208367125U (en) | 2018-07-10 | 2018-07-10 | A kind of fault electric arc detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821084006.1U CN208367125U (en) | 2018-07-10 | 2018-07-10 | A kind of fault electric arc detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208367125U true CN208367125U (en) | 2019-01-11 |
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ID=64925042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821084006.1U Active CN208367125U (en) | 2018-07-10 | 2018-07-10 | A kind of fault electric arc detection equipment |
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| Country | Link |
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| CN (1) | CN208367125U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684312A (en) * | 2020-12-24 | 2021-04-20 | 中国矿业大学 | Low-voltage series fault arc test platform |
-
2018
- 2018-07-10 CN CN201821084006.1U patent/CN208367125U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684312A (en) * | 2020-12-24 | 2021-04-20 | 中国矿业大学 | Low-voltage series fault arc test platform |
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