CN104502439B - Livewire work insulating tool defect detecting device - Google Patents
Livewire work insulating tool defect detecting device Download PDFInfo
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- CN104502439B CN104502439B CN201410700101.XA CN201410700101A CN104502439B CN 104502439 B CN104502439 B CN 104502439B CN 201410700101 A CN201410700101 A CN 201410700101A CN 104502439 B CN104502439 B CN 104502439B
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- 230000007547 defect Effects 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 claims abstract description 48
- 239000011229 interlayer Substances 0.000 claims abstract description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
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- 238000002474 experimental method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
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- 238000010438 heat treatment Methods 0.000 description 2
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- 238000010292 electrical insulation Methods 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of livewire work insulating tool defect detecting device, detected including sensor, control module, for interlayer and along layer detect the defects of detection module and stepper motor, the output end of the defects detection module and the input of control module connect, the output end of the sensor and the input of control module connect, the output end connection stepper motor of the defects detection module.Reach the purpose that high efficiency realizes insulating tool safety detection.
Description
Technical field
The present invention relates to electric power tool detection field, in particular it relates to a kind of livewire work insulating tool defects detection
Device.
Background technology
At present, use that insulating tool, safety protective tools species are more, and architectural difference is big in livewire work, its insulating properties
The safety of operating personnel and equipment is directly connected to, therefore the management and use of insulating tool and safety protective tools have to comply with
《State Grid Corporation of China's electric power safety working regulation（Circuit pack）》The requirement of middle pertinent regulations, strictly observe the regulation in safety
Periodically tested, timely the defects of finding to exist and hidden danger.
Live-working safety safety device includes insulating protection apparatus, insulation shading tool and shielding apparatus, long-term use of
Easily make surface abrasion, contamination, cause layer thickness thinning, reduce along surface resistance, have impact on electrical insulation properties, threaten work
Industry safety.Existing insulating tool detection technique is the quality for checking insulation first, whether has puncture by eye-observation and opens
Glue, phenomena such as whetheing there is gas leakage or breach.It is observed that if disadvantages described above is not present, ensureing the dry premise of insulating tool cleaning
Under, by insulating tool immersion test with insulation liquid bath, voltage is applied by electrode pair insulating tool, according to different grades of exhausted
Edge instrument, ac voltage withstanding value and leakage current values the difference high voltage to select, high voltage some minutes, such as without flashover,
Pass through, otherwise can not pass through without breakdown, without obvious heating, then experiment.Experiment is required for carrying out in dielectric above, after experiment
Insulating tool speckles with dielectric, can not be immediately available for livewire work.Another method is to utilize megger measuring resistance at the scene, needs two
Position staff's coordinating operation, this method can not carry out complete detection to insulating tool, and detection efficiency is low.
The content of the invention
It is an object of the present invention in view of the above-mentioned problems, propose a kind of livewire work insulating tool defect detecting device,
To realize the advantages of high efficiency realizes insulating tool safety detection.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of livewire work insulating tool defect detecting device, including sensor, control module, for interlayer detection and
The defects of being detected along layer detection module and stepper motor, the output end of the defects detection module and the input of control module connect
Connect, the output end of the sensor and the input of control module connect, the output end connection stepping of the defects detection module
Motor.
Preferably, the defects detection module, including TL494 chips, triode P1, FET Q1, diode D4 and
Diode D5, series resistance R13 and resistance R12, the resistance R13 and resistance between the IN+ inputs and ground of the TL494 chips
Series resistance R11 on node between R12, the VREF reference outputs of the TL494 chips input with the IN- of TL494 chips
Series resistance R16 between end, series resistance R15, resistance R14 and electric capacity C13 composition on the CMPEN inputs of the TL494 chips
Series circuit it is in parallel with resistance R15, the C1 inputs of the TL494 chips are connected with triode P1 colelctor electrode, described
The E2 output ends of TL494 chips are connected with diode D5 anode, and diode D5 anode is connected with triode P1 base stage,
Diode D5 negative electrode is connected with triode P1 emitter stage, between the negative electrode of the diode D5 and FET Q1 grid
Series voltage stabilizing diode between the drain electrode of series resistance R17, the FET Q1 source electrode and FET Q1, the voltage stabilizing two
The anode of pole pipe is connected with FET Q1 source electrode, and the drain electrode of the FET Q1 is connected with diode D4 anode, should
Diode D4 negative electrode series resistance R20, the resistance R20 both ends parallel resistance C7.
Preferably, the resistance of the resistance R11 is that 500M Ω, the resistance R12 resistance are 1M Ω, the electric capacity C7's
Capacitive reactance is 10uF.
Preferably, the stepper motor is divided into horizontal direction stepper motor and vertical direction stepper motor, if defects detection
Module detects defect, and control module sends marking of control signal to stepper motor, horizontal direction stepper motor and drives crawler belt to return
Defect point is back to, vertical direction stepper motor drives water core pen to move to defect point and completes positioning, and horizontal step motor opens again
Side-to-side movement is marked centered on dynamic positioning the defects of point by vertical direction stepper motor.
Technical scheme has the advantages that：
Technical scheme, the pulse signal that defects detection module is sent are examined to the insulating barrier of insulating tool
Survey, one can realize, reach the purpose that high efficiency realizes insulating tool safety detection.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the theory diagram of the livewire work insulating tool defect detecting device described in the embodiment of the present invention；
The electronic circuitry of the defects of Fig. 2 is described in embodiment of the present invention detection module.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein preferred real
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
As shown in figure 1, a kind of livewire work insulating tool defect detecting device, including sensor, control module, it is used for
Interlayer detect and along layer detect the defects of detection module and stepper motor, the output end of defects detection module and control module it is defeated
Enter end connection, the output end of sensor and the input of control module connect, the output end connection stepping electricity of defects detection module
Machine.
As shown in Fig. 2 defects detection module, including TL494 chips, triode P1, FET Q1, diode D4 and two
Series resistance R13 and resistance R12 between the IN+ inputs and ground of pole pipe D5, TL494 chip, between resistance R13 and resistance R12
Series resistance between the VREF reference outputs of series resistance R11 on node, TL494 chip and the IN- inputs of TL494 chips
The series circuit and resistance that series resistance R15, resistance R14 and electric capacity C13 are formed on the CMPEN inputs of R16, TL494 chip
R15 is in parallel, and the C1 inputs of TL494 chips are connected with triode P1 colelctor electrode, the E2 output ends and diode of TL494 chips
D5 anode connection, and diode D5 anode is connected with triode P1 base stage, the diode D5 negative electrode and triode P1
Emitter stage connection, series resistance R17 between diode D5 negative electrode and FET Q1 grid, FET Q1 source electrode and
Series voltage stabilizing diode between FET Q1 drain electrode, the anode of voltage-regulator diode are connected with FET Q1 source electrode, field effect
Should pipe Q1 drain electrode connected with diode D4 anode, diode D4 negative electrode series resistance R20, the two of resistance R20
Hold parallel resistance C7.
Resistance R11 resistance is 500M Ω, and resistance R12 resistance is 1M Ω, and electric capacity C7 capacitive reactance is 10uF.
Stepper motor is divided into horizontal direction stepper motor and vertical direction stepper motor, if the detection of defects detection module is fallen vacant
Fall into, control module sends marking of control signal to stepper motor, horizontal direction stepper motor and drives crawler belt to be back to defect point, hangs down
Nogata drives water core pen to move to defect point and completes positioning to stepper motor, and horizontal step motor is again started up walking with vertical direction
Side-to-side movement is marked centered on stepper motor positioning the defects of point.
The node that 12v is marked in Fig. 2 is connected by relay with control module, and interlayer sense command is sent in control module
When, the output of relay adhesive 12v power supplys.TL494 chip pins IN+ and IN- is the positive input and negative sense of error amplifier
Input；Pin CMPEN is the comparator input terminal of TL494 chips；Pin DTC is Power MOSFET end；Pin RT and CT
For oscillator input；Pin C1, C2 and VCC are power input；Pin CNTLO is output control terminal；Pin E1 and E2 are defeated
Go out end；Voltage output end on the basis of pin VREF；Pin IN2- and IN2+ are the positive input and negative sense input of error amplifier
End.The pin of TL494 chips is the common function of those skilled in the art, and its English representative means clear, clear and definite.
In Fig. 2 resistance R11 connected with resistance R12 partial pressure and be used as amplifier input resistance, diode D5 for protection two poles
Pipe prevents from exporting high-voltage inverted influence TL494, and triode P1 is for Current amplifier, and electric capacity C7 and resistance R20 parallel connections are again with two
Pole pipe D4 connects for preventing boost module from influenceing low-voltage module.TL494 chips are the pulse width modulation of a fixed frequency
Circuit, built-in linear saw tooth wave oscillator, frequency of oscillation can be by the resistance and an electric capacity that are connected with RT and CT
It is adjusted, its frequency of oscillation is as follows：
The width of output pulse is carried out by the positive polarity sawtooth voltage on electric capacity C4 and two other control signal
Compare to realize.1:10 boost modules are connected by J3 binding posts in figure.Interlayer detection defect letter is sent if defect is detected
Number and detect flaw indication to control module along floor, control module sends step motor control signal and marking of control signal to walking
Stepper motor.Flaw labeling is realized by stepper motor, crawler belt and water core pen, if detecting defect, control module sends marking of control
For signal to stepper motor, horizontal direction stepper motor drives crawler belt to be back to defect point, and vertical direction stepper motor drives water core
Pen moves downward further positioning defect point, horizontal step motor and is again started up the side-to-side movement centered on defect point and enters rower
Note.
The boost module multiplication factor of intralayer defects detection is 1:20.Driving stepper motor is mainly by three directions of x, y, z
Composition.
Livewire work is specific as follows with the insulating tool defect detecting device course of work：
1st, equipment initializes,
Because power failure or last detection process terminate operation, photoelectric sensor does not stop at original position, new one
Secondary detection needs to initialize photoelectric sensor to starting point before starting.
2nd, insulating tool size detection,
Different insulative tool sizes and thickness are different, therefore insulating tool size need to be judged by transverse direction and longitudinal direction sensor
Size and thickness, so as to limit horizontal detection width, longitudinal compression thickness.Transverse direction and longitudinal direction sensor is photoelectric sensor.
3rd, detect,
Using three direction linkages of x, y, z, and transversal scanning mode High voltage output is coordinated to realize insulating tool defects detection.
4th, flaw labeling,
When detecting defect, control module, which is sent, stops sense command, is back to defective locations and marking of defects type.
Livewire work insulating tool defect detecting device, initializing signal derives from limit sensors, when spacing sensing
Device represents detection sensor not in original position when exporting high level, control module sends playback order to stepper motor, stepping
Motor driven sensor moves towards original position, and when detection sensor reaches original position, it is defeated to produce low level for limit sensors
Enter to control module, so as to complete equipment initialization.Step 2, with insulating tool while be reference point, detection sensor is from left-hand
Right motion, it is another border of insulating tool when detecting unobstructed, record stepper motor turnning circle calculates operating path
And it is insulating tool width.Vertical direction stepper motor drives vertical direction sensor to move downward, and pressure sensor is according to absolutely
Edge instrument bottom surface stress determines insulating tool thickness, and records the spacing value of vertical direction.Step 3, by being applied in interlayer and along face
Added high pressure mode, and in the case where three direction sensors of x, y, z coordinate, insulation is detected with scan mode from left to right, from top to bottom
Instrument interlayer and along planar defect.Step 4, when detecting defect, control module send stop sense command, and send return life
Make more supreme, and mark（Intralayer defects red-label, along planar defect blue markings）.
The interlayer detection of technical scheme can be by arranging special electrode, and on two electrodes along face and interlayer
Apply voltage, making alive some minutes, see whether flashover, breakdown, obvious heating.And use portable detection method（That is electrode
Laterally detection, insulating tool uniformly move up, and realize complete detection）.Whole detection process is controlled using control module, is started
After power supply, sensor detection insulating tool size is positioned, and then applies high pressure and using portable inspection in interlayer and along face
Survey method detects, and detects automatic marking of defects type after defect, and continue to detect.
In summary, technical solution of the present invention has the following effects that：
1st, livewire work is detected with insulating tool intralayer defects, and interlayer detection will depart from dielectric, and with being examined in dielectric
Measuring tool has equivalent effect.
2nd, livewire work is detected with insulating tool along planar defect, to cover insulating tool comprehensively, and efficiently complete.
3rd, detection process operating in a key, high efficient and reliable.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (2)
- A kind of 1. livewire work insulating tool defect detecting device, it is characterised in that including limit sensors, control module, Detected for interlayer and along face detect the defects of detection module and stepper motor, the output end of the defects detection module and control The input connection of module, the output end of the limit sensors and the input of control module connect, the control module Output end connects stepper motor；Initializing signal derives from limit sensors, represents to lack when limit sensors export high level Not in original position, control module sends playback order to stepper motor, stepper motor and drives defects detection mould sunken detection module Block moves towards original position；The defects detection module, including TL494 chips, triode P1, FET Q1, diode D4 With diode D5, series resistance R13 and resistance R12, the resistance R13 and electricity between the IN+ inputs and ground of the TL494 chips It is defeated to hinder series resistance R11, the IN- of the VREF reference outputs and TL494 chips of the TL494 chips on the node between R12 Enter series resistance R16 between end, series resistance R15, resistance R14 and electric capacity C13 groups on the CMPEN inputs of the TL494 chips Into series circuit it is in parallel with resistance R15, the C1 inputs of the TL494 chips are connected with triode P1 colelctor electrode, described The E2 output ends of TL494 chips are connected with diode D5 anode, and diode D5 anode is connected with triode P1 base stage, Diode D5 negative electrode is connected with triode P1 emitter stage, between the negative electrode of the diode D5 and FET Q1 grid Series voltage stabilizing diode between the drain electrode of series resistance R17, the FET Q1 source electrode and FET Q1, the voltage stabilizing two The anode of pole pipe is connected with FET Q1 source electrode, and the drain electrode of the FET Q1 is connected with diode D4 anode, should Diode D4 negative electrode series resistance R20, the resistance R20 both ends shunt capacitance C7.
- 2. livewire work according to claim 1 insulating tool defect detecting device, it is characterised in that the resistance R11 resistance is that 500M Ω, the resistance R12 resistance are that 1M Ω, electric capacity C7 capacitive reactance is 10 μ F.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700101.XA CN104502439B (en) | 2014-11-28 | 2014-11-28 | Livewire work insulating tool defect detecting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410700101.XA CN104502439B (en) | 2014-11-28 | 2014-11-28 | Livewire work insulating tool defect detecting device |
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| CN104502439B true CN104502439B (en) | 2017-12-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106525918A (en) * | 2016-10-25 | 2017-03-22 | 广西电网有限责任公司电力科学研究院 | Power line clip defect recognition device and method |
| CN109884478A (en) * | 2018-12-20 | 2019-06-14 | 国网浙江省电力有限公司金华供电公司 | A kind of live line work insulating Work tool insulating properties detection device and method |
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|---|---|---|---|---|
| DE2942611A1 (en) * | 1978-10-23 | 1980-04-30 | Costantini | DEVICE FOR DETERMINING UNIFORMITY IN THE STRUCTURE OF CERAMIC TILES, TILES AND THE LIKE. |
| US4443764A (en) * | 1980-10-30 | 1984-04-17 | Massachusetts Institute Of Technology | Method for non-destructive detection and characterization of flaws |
| CN1975404A (en) * | 2005-11-30 | 2007-06-06 | 三星电子株式会社 | Apparatus and method of detecting defective substrate |
| CN102053115A (en) * | 2010-12-06 | 2011-05-11 | 河海大学 | Device and method for detecting defect of composite material |
| CN204359747U (en) * | 2014-11-28 | 2015-05-27 | 国家电网公司 | Hot line job insulating tool defect detecting device |
-
2014
- 2014-11-28 CN CN201410700101.XA patent/CN104502439B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2942611A1 (en) * | 1978-10-23 | 1980-04-30 | Costantini | DEVICE FOR DETERMINING UNIFORMITY IN THE STRUCTURE OF CERAMIC TILES, TILES AND THE LIKE. |
| US4443764A (en) * | 1980-10-30 | 1984-04-17 | Massachusetts Institute Of Technology | Method for non-destructive detection and characterization of flaws |
| CN1975404A (en) * | 2005-11-30 | 2007-06-06 | 三星电子株式会社 | Apparatus and method of detecting defective substrate |
| CN102053115A (en) * | 2010-12-06 | 2011-05-11 | 河海大学 | Device and method for detecting defect of composite material |
| CN204359747U (en) * | 2014-11-28 | 2015-05-27 | 国家电网公司 | Hot line job insulating tool defect detecting device |
Non-Patent Citations (1)
| Title |
|---|
| 基于DSP的市电验电器设计与研究;方胜利;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20131215(第S2期);第3、67页 * |
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