CN107907592A - A kind of supersonic detection device for live line work insulating rod - Google Patents
A kind of supersonic detection device for live line work insulating rod Download PDFInfo
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- CN107907592A CN107907592A CN201711037739.XA CN201711037739A CN107907592A CN 107907592 A CN107907592 A CN 107907592A CN 201711037739 A CN201711037739 A CN 201711037739A CN 107907592 A CN107907592 A CN 107907592A
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- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 239000000523 sample Substances 0.000 claims abstract description 81
- 238000002604 ultrasonography Methods 0.000 claims abstract description 43
- 238000009413 insulation Methods 0.000 claims description 8
- 230000035945 sensitivity Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000007654 immersion Methods 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 239000002131 composite material Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000005284 excitation Effects 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/048—Marking the faulty objects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0235—Plastics; polymers; soft materials, e.g. rubber
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- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
A kind of supersonic detection device for live line work insulating rod, is related to a kind of supersonic detection device.At present, for the water seaoning ultrasound detection of insulating bar, required water immersion is big, is only suitable for test in laboratory, is not suitable for making portable device.The detector that the present invention includes detector, is connected with detector, the detector include voussoir, transmitting probe and receiving transducer on voussoir；Voussoir between transmitting probe and receiving transducer is equipped with sound insulating layer；The bottom surface of the voussoir is equipped with the inner concave arc surface to match with insulating bar, and the top surface of voussoir is equipped with transmitting probe, receiving transducer；Transmitting probe, receiving transducer have angle towards inner concave arc surface between the transmitting probe and receiving transducer；Transmitting probe and receiving transducer are connected on ultrasound measuring instrument by probe wire.The technical program is simple in structure, light, is convenient for carrying, easy to operate, can easily and effectively realize the interior wound detection to insulating bar.
Description
Technical field
The present invention relates to a kind of supersonic detection device, more particularly to a kind of ultrasound detection for live line work insulating rod to fill
Put.
Background technology
Live line work insulating tubing is generally made of the epoxy resin composite material of glass fiber reinforcement, is possessed good
Machinery and insulation performance.Since insulating tool is subject to the synergy of high-voltage electricity and mechanical stress in long-term use, inside holds
The microdefects such as layering, air gap, impurity are easily formed, causes its machinery and decreasing insulating, finally jeopardizes operating personnel and inspection
Repair the safety of equipment.The examinations such as currently used preventive trial is by carrying out resistance test, leakage current detects, dynamic load detects
Test, the overall performance of insulated pipes used is judged, but quantitative analysis is unable to the situation of material internal defect, it is fixed at the same time
Phase tests the current state that can only protect sign instrument, does not ensure that performance during use.Ultrasonic detecting technology is as a kind of lossless
Detection method, has the remarkable advantages such as simple operation, the simple, not damaged of equipment, but insulating bar diameter is small, and representative diameter is
20mm, curvature is big, and ultrasonic coupling is difficult, and is composite material, and ultrasonic wave is decayed greatly inside it, complexity is propagated, although water logging
Method can realize ultrasonic coupling, but for the water seaoning ultrasound detection of insulating bar, required water immersion is big, is only suitable for laboratory
Detection, is not suitable for making portable device, can not carry out the ultrasound detection of insulating bar at the scene.
The content of the invention
The technical problem to be solved in the present invention and the technical assignment proposed are prior art to be improved with being improved,
A kind of supersonic detection device for live line work insulating rod is provided, to facilitate the interior wound detection realized to live line work insulating rod
For the purpose of.For this reason, the present invention takes following technical scheme.
A kind of supersonic detection device for live line work insulating rod, including detector, the detector that is connected with detector,
The detector includes voussoir, transmitting probe and receiving transducer on voussoir；Between transmitting probe and receiving transducer
Voussoir is equipped with sound insulating layer；The bottom surface of the voussoir is equipped with the inner concave arc surface to match with insulating bar, and the top surface of voussoir is equipped with hair
Penetrate probe, receiving transducer；Transmitting probe, receiving transducer are towards inner concave arc surface, and between the transmitting probe and receiving transducer
With angle；Transmitting probe and receiving transducer are connected on ultrasound measuring instrument by probe wire, and ultrasound measuring instrument has transmitting-receiving point
From function, realize that a hair one of transmitting probe and receiving transducer is received, ultrasound measuring instrument using high-voltage pulse excitation transmitting probe,
And amplify and gather the received ultrasonic echo of receiving transducer, the internal flaw situation of insulating bar is judged according to ultrasonic echo.Ultrasound
During detection, insulating bar is arranged in the inner concave arc surface of voussoir, opens high voltage power supply, transmitting probe is encouraged using high-voltage pulse, and
Amplification and the collection received ultrasonic echo of receiving transducer, the internal flaw situation of insulating bar, structure letter are judged according to ultrasonic echo
It is single, light, it is convenient for carrying, it is easy to operate, it can easily and effectively realize the interior wound detection to insulating bar.
As further improving and supplementing to above-mentioned technical proposal, present invention additionally comprises following additional technical feature.
The top surface of the voussoir is equipped with two symmetrical inclined-planes, and an inclined-plane is equipped with the transmitting probe, another inclined-plane
Be equipped with the receiving transducer, opened up on the centre position of the inner concave arc surface one axially through sound insulation groove, it is described
Embedded sound insulating layer in sound insulation groove.Sound insulation groove is easy to be embedded sound insulating layer, and by sound insulating layer, the ultrasonic wave of the transmitting of transmitting probe will not
Receiving transducer is directly passed to, has filtered out invalid ultrasound clutter, makes supersonic sounding apparent.
Screw hole is opened up on the inclined-plane, the transmitting probe, the front end of receiving transducer are equipped with screw thread, the transmitting
Probe, receiving transducer are threadedly coupled with corresponding screw hole.It is connected through a screw thread mode, replacement transmitting probe easy to disassemble and reception
Probe.
The detector is equipped with multiple voussoirs, and multiple voussoirs form the voussoir of the inner concave arc surface with different curvature radius
Group, selects a selection according to the diameter of insulating bar to be checked when detecting., can be with by the voussoir of the inner concave arc surface of a variety of different curvatures
Corresponding selection is easily carried out according to different insulating bar diameters, makes the interior wound detection of insulating bar more quick accurate.
Screw axially bored line on two inclined-planes is intersected in the radius of curvature of inner concave arc surface.Easy to transmitting probe and receiving transducer
Transmitting and receive direction alignment insulating bar inside, make ultrasound result of detection become apparent from accurately.
Transmitting probe, the center line crosspoint of receiving transducer are overlapped with the inner concave arc surface center of circle.Easy to transmitting probe and reception
The transmitting of probe and reception direction alignment insulating bar center, and make ultrasonic wave that there is preferable reflecting effect inside insulating bar,
Accomplish farthest to receive ultrasonic wave, ultrasound detection is apparent.
The transmitting probe, the head of receiving transducer are piezoelectric chip；Piezoelectric chip is equipped with multi-frequency；Detecting
When, the piezoelectric chip for selecting corresponding different frequency and different-diameter according to the type of insulating bar selects a selection.Using piezoelectric chip,
The ultrasound intensity of generation is big, high pressure；, can be preferably real by for different insulating bars, selecting corresponding piezoelectric chip
Now effective ultrasound detection.
The frequency of the piezoelectric chip includes 5MHz and two kinds of 10MHz.Two kinds of piezoelectric chip applications are universal, use effect
Fruit is good.
Transmitting probe uses the piezoelectric chips of high d33 coefficients to produce big ultrasound intensity；The receiving transducer uses
The piezoelectric chip of high g33 coefficients is with high sensitivity and high bandwidth.The ultrasound intensity that the piezoelectric chip of high d33 coefficients produces
Greatly, and receive high sensitivity, the sound wave bandwidth of reception is relatively large, can more effectively realize it is interior wound detection.
It is α to have angle between the transmitting probe and receiving transducer, 42 °≤α≤62 °.The angular range ultrasonic wave
Reflecting effect in insulating bar is preferable, receiving transducer is received ultrasonic wave to greatest extent.
The detector includes T/R transmit-receive switches, preamplifier, time gain controller, wave filter, analog-to-digital conversion
Device, controller, high pressure transmitter and high voltage analog switch, the controller and time gain controller, high pressure transmitter, mould
Number converter, display are connected；The controller is connected by high pressure transmitter with transmitting probe；The T/R transmitting-receivings are opened
Pass, preamplifier, time gain controller, wave filter, analog-digital converter are arranged in series, and the information of receiving transducer passes sequentially through
T/R transmit-receive switches, preamplifier, time gain controller, wave filter, analog-digital converter, access controller.Dual probe one is sent out
One time receiving, high voltage analog switch shut-off, transmitting-receiving separation, high pressure transmitter produce high-voltage pulse excitation transmitting probe, receiving circuit
By the signal of receiving transducer after the amplification filtering of T/R transmit-receive switches, preamplifier, time gain controller, wave filter
Digital signal is converted into by analog-digital converter collection, then carries out processing and waveform and shows；It is multiple since insulating bar is composite material
The characteristics of ultrasonic attenuation is big in condensation material is, it is necessary to increase ultrasound emission intensity, also due to the original that compound material ultrasound decay is big
Cause, ultrasonic echo is weak, so needing preposition low noise amplification, and needs time gain control, highly sensitive super to realize
Sound reception, so as to find the defects of insulating bar.
Beneficial effect：
1st, it is simple in structure, light, it is convenient for carrying, realization that can be easily and effectively detects the interior wound of insulating bar.
2nd, can be effectively to different straight by the transmitting probe and receiving transducer on replaceable different voussoir and voussoir
The insulating bar of footpath and material specification is detected.
3rd, by setting sound insulation groove on the voussoir between transmitting probe and receiving transducer, invalid surpass can effectively be reduced
Sound clutter, makes supersonic sounding apparent.
4th, the optimization for the angle direction launched and received by transmitting probe and receiving transducer, makes ultrasonic wave in insulating bar
Portion has preferable reflecting effect, accomplishes farthest to receive ultrasonic wave, ultrasound detection is apparent.
5th, by preferential piezoelectric chip, the ultrasound intensity of generation is big, high pressure, and the high sensitivity received, reception
Sound wave bandwidth is relatively large, can more effectively realize interior wound detection.
6th, controlled by perfect circuit, can effectively strengthen ultrasonic wave emissive porwer, realize that highly sensitive ultrasound connects
Receive, so as to be more prone to find the defects of insulating bar.
Brief description of the drawings
Fig. 1 is detector operation principle structure diagram of the present invention.
Fig. 2 is detector fundamental diagram of the present invention.
In figure：1- voussoirs；2- receiving transducers；3- transmitting probes；4- sound insulating layers；5- high voltage analog switches；6-T/R transmitting-receivings are opened
Close；7- preamplifiers；8- time gain controllers；9- wave filters；10- analog-digital converters；11- high pressure transmitters；12- is shown
Device；13- controllers；14- insulating bars.
Embodiment
Technical scheme is described in further detail below in conjunction with Figure of description.
As shown in Figs. 1-2, a kind of supersonic detection device for live line work insulating rod, including detector and detector
Connected detector, detector include voussoir 1, transmitting probe 3 and receiving transducer 2 on voussoir 1；Transmitting probe 3 is with connecing
The voussoir 1 received between probe 2 is equipped with sound insulating layer 4；The bottom surface of voussoir 1 is equipped with the inner concave arc surface to match with insulating bar, voussoir 1
Top surface is equipped with transmitting probe 3, receiving transducer 2；Transmitting probe 3, receiving transducer 2 are towards inner concave arc surface, and transmitting probe 3 is with receiving
There is angle between probe 2；Transmitting probe 3 and receiving transducer 2 are connected on ultrasound measuring instrument by probe wire, ultrasound measuring instrument
Have the function of that transmitting-receiving is separated, realize that a hair one of transmitting probe 3 and receiving transducer 2 is received, ultrasound measuring instrument utilizes high-voltage pulse
Transmitting probe 3 is encouraged, and amplifies and gathers 2 received ultrasonic echo of receiving transducer, insulating bar 14 is judged according to ultrasonic echo
Internal flaw situation.
In order to completely cut off invalid ultrasound clutter, the top surface of voussoir 1 is equipped with two symmetrical inclined-planes, and an inclined-plane is equipped with transmitting and visits
First 3, another inclined-plane is equipped with receiving transducer 2, opened up on the centre position of inner concave arc surface one axially through sound insulation groove, insulate against sound groove
Middle embedded sound insulating layer 4.By sound insulating layer, the ultrasonic wave of the transmitting of transmitting probe 3 will not be directly passed to receiving transducer 2, isolation
Invalid ultrasound clutter, makes the supersonic sounding apparent.
For the ease of dismounting and change, screw hole is opened up on inclined-plane, transmitting probe 3, the front end of receiving transducer 2 are equipped with screw thread, hair
Penetrate probe 3, receiving transducer 2 is threadedly coupled with corresponding screw hole.It is connected through a screw thread mode, replacement transmitting probe 3 easy to disassemble
With receiving transducer 2.
In order to adapt to the insulating bar 14 of different-diameter, detector is equipped with multiple voussoirs 1, and multiple voussoirs 1, which are formed, has difference
1 group of the voussoir of the inner concave arc surface of radius of curvature, selects a selection according to the diameter of insulating bar 14 to be checked when detecting.By it is a variety of not
With the voussoir 1 of the inner concave arc surface of curvature, in that context it may be convenient to carry out corresponding selection according to different 14 diameters of insulating bar, make insulating bar
14 interior wound detection is more quick accurate.
In order to obtain preferable result of detection, the screw axially bored line on two inclined-planes intersects at the radius of curvature of inner concave arc surface
It is interior.Inside the transmitting of transmitting probe 3 and receiving transducer 2 and reception direction alignment insulating bar 14, make the result of detection of ultrasound
Become apparent from accurate.
In order to obtain more preferable result of detection, transmitting probe 3, the center line crosspoint of receiving transducer 2 and inner concave arc surface are justified
The heart overlaps.Transmitting and reception direction 14 center of alignment insulating bar easy to transmitting probe 3 and receiving transducer 2, and ultrasonic wave is existed
The inside of insulating bar 14 has preferable reflecting effect, accomplishes farthest to receive ultrasonic wave, ultrasound detection is apparent.
In order to preferably realize ultrasound detection, transmitting probe 3, the head of receiving transducer 2 are piezoelectric chip；Detecting
When, according to the type of insulating bar 14 selection respective frequencies and the piezoelectric chip of diameter.Using piezoelectric chip, the ultrasound intensity of generation
Greatly, high pressure, by for different insulating bars 14, selecting corresponding piezoelectric chip, can preferably realize effective ultrasound
Detection.
In order to be better achieved ultrasound detection, transmitting probe 3 uses the piezoelectric chips of high d33 coefficients to produce big ultrasound
Intensity；Receiving transducer 2 uses the piezoelectric chip of high g33 coefficients with high sensitivity and high bandwidth.The piezo crystals of high d33 coefficients
The ultrasound intensity that piece produces is big, and the high sensitivity received, and the sound wave bandwidth of reception is relatively large, can more effectively realize
Interior wound detection.
In order to obtain preferably ultrasonic reflection effect, the angle between transmitting probe 3 and receiving transducer 2 is 45 degree.The angle
It is preferable to spend reflecting effect of the ultrasonic wave in insulating bar 14, receiving transducer 2 is preferably received ultrasonic wave.
In order to realize perfect ultrasound emission, reception and processing, detector include T/R transmit-receive switches 6, preamplifier 7,
Time gain controller 8, wave filter 9, analog-digital converter 10, controller 13, high pressure transmitter 11 and high voltage analog switch 5, control
Device 13 processed is connected with time gain controller 8, high pressure transmitter 11, analog-digital converter 10, display；Controller 13 passes through high pressure
Transmitter 11 is connected with transmitting probe 3；T/R transmit-receive switches 6, preamplifier 7, time gain controller 8, wave filter 9, modulus
Converter 10 is arranged in series, and the information of receiving transducer 2 passes sequentially through T/R transmit-receive switches 6, preamplifier 7, time gain control
Device 8, wave filter 9, analog-digital converter 10, access controller 13.Dual probe one sends out a time receiving, and high voltage analog switch 5 turns off, and receives and dispatches
Separation, high pressure transmitter 11 produce high-voltage pulse excitation transmitting probe 3, and receiving circuit receives the signal of receiving transducer 2 by T/R
The amplification of hair switch 6, preamplifier 7, time gain controller 8, wave filter 9 passes through the collection of analog-digital converter 10 and turns after filtering
Change digital signal into, then carry out processing and waveform and show；Since insulating bar 14 is composite material, ultrasonic attenuation is big in composite material
The characteristics of, it is necessary to increase ultrasound emission intensity, also due to the reason for compound material ultrasound decay is big, ultrasonic echo is weak, so
Preposition low noise amplification is needed, and needs time gain control, to realize highly sensitive ultrasonic reception, so as to find to insulate
The defects of rod 14.
During ultrasound detection, couplant first is coated in the detection cambered surface of insulating bar 14, then insulating bar 14 is arranged in voussoir 1
In cancave cambered surface, high voltage power supply is opened, the hair of dual probe one one is received, and high voltage analog switch 5 turns off, transmitting-receiving separation, high pressure transmitter 11
High-voltage pulse excitation transmitting probe 3 is produced, receiving circuit is by the signal of receiving transducer 2 by T/R transmit-receive switches 6, preposition amplification
The amplification of device 7, time gain controller 8, wave filter 9 is gathered by analog-digital converter 10 after filtering and is converted into digital signal, then
Carry out processing and display waveform, operating personnel are judged in insulating bar 14 according to the ultrasound echo signal of display on the display 12
Portion's defect situation, it is simple in structure, light, it is convenient for carrying, it is easy to operate, it can easily and effectively realize the interior wound inspection to insulating bar 14
Survey.
In this example, the frequency of piezoelectric chip is 10MHz.
A kind of supersonic detection device for live line work insulating rod shown in figure 1 above -2 is the specific implementation of the present invention
Example, has embodied substantive distinguishing features of the present invention and progress, can be right under the enlightenment of the present invention according to actual use needs
It carries out shape, the equivalent modifications of structure etc., this programme protection domain row.
Claims (10)
1. a kind of supersonic detection device for live line work insulating rod, including detector, the detector that is connected with detector, its
It is characterized in that：The detector includes voussoir, transmitting probe and receiving transducer on voussoir；Transmitting probe is visited with receiving
Voussoir between head is equipped with sound insulating layer；The bottom surface of the voussoir is equipped with the inner concave arc surface to match with insulating bar, the top of voussoir
Face is equipped with transmitting probe, receiving transducer；Transmitting probe, receiving transducer are towards inner concave arc surface, and the transmitting probe and reception
There is angle between probe；Transmitting probe and receiving transducer are connected on ultrasound measuring instrument by probe wire, ultrasound measuring instrument tool
There is the separated function of transmitting-receiving, realize that a hair one of transmitting probe and receiving transducer is received, ultrasound measuring instrument is encouraged using high-voltage pulse
Transmitting probe, and amplify and gather the received ultrasonic echo of receiving transducer, the internal flaw of insulating bar is judged according to ultrasonic echo
Situation.
A kind of 2. supersonic detection device for live line work insulating rod according to claim 1, it is characterised in that：One is oblique
Face is equipped with the transmitting probe, another inclined-plane is equipped with the receiving transducer, the centre position of the inner concave arc surface
On open up one axially through sound insulation groove, embedded sound insulating layer in the sound insulation groove.
A kind of 3. supersonic detection device for live line work insulating rod according to claim 2, it is characterised in that：It is described
Inclined-plane on open up screw hole, the transmitting probe, the front end of receiving transducer are equipped with screw thread, and the transmitting probe, receive and visit
Head is threadedly coupled with corresponding screw hole.
A kind of 4. supersonic detection device for live line work insulating rod according to claim 3, it is characterised in that：It is described
Detector be equipped with multiple voussoirs, multiple voussoirs form the voussoir group of the inner concave arc surfaces with different curvature radius, when detecting
One selection is selected according to the diameter of insulating bar to be checked.
A kind of 5. supersonic detection device for live line work insulating rod according to claim 4, it is characterised in that：Two is oblique
Screw axially bored line on face is intersected in the radius of curvature of inner concave arc surface.
A kind of 6. supersonic detection device for live line work insulating rod according to claim 5, it is characterised in that：Transmitting
Probe, the center line crosspoint of receiving transducer are overlapped with the inner concave arc surface center of circle.
A kind of 7. supersonic detection device for live line work insulating rod according to claim 6, it is characterised in that：It is described
Transmitting probe, the head of receiving transducer be piezoelectric chip；Piezoelectric chip is equipped with the piezoelectric chip of multi-frequency；Detecting
When, the piezoelectric chip for selecting corresponding different frequency and different-diameter according to the type of insulating bar selects a selection.
A kind of 8. supersonic detection device for live line work insulating rod according to claim 7, it is characterised in that：It is described
The frequency of piezoelectric chip include 5MHz and two kinds of 10MHz；Transmitting probe uses the piezoelectric chip of high d33 coefficients big to produce
Ultrasound intensity；The receiving transducer uses the piezoelectric chip of high g33 coefficients with high sensitivity and high bandwidth.
9. a kind of supersonic detection device for live line work insulating rod according to claim 1-8 any claims,
It is characterized in that：It is α to have angle between the transmitting probe and receiving transducer, 42 °≤α≤62 °.
10. a kind of supersonic detection device for live line work insulating rod according to claim 1-8 any claims,
It is characterized in that：The detector includes T/R transmit-receive switches, preamplifier, time gain controller, wave filter, modulus
Converter, controller, high pressure transmitter and high voltage analog switch, the controller are sent with time gain controller, high pressure
Device, analog-digital converter, display are connected；The controller is connected by high pressure transmitter with transmitting probe；The T/R is received
Hair switch, preamplifier, time gain controller, wave filter, analog-digital converter are arranged in series, and the information of receiving transducer is successively
Pass through T/R transmit-receive switches, preamplifier, time gain controller, wave filter, analog-digital converter, access controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711037739.XA CN107907592A (en) | 2017-10-30 | 2017-10-30 | A kind of supersonic detection device for live line work insulating rod |
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| CN201711037739.XA CN107907592A (en) | 2017-10-30 | 2017-10-30 | A kind of supersonic detection device for live line work insulating rod |
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| CN109632069A (en) * | 2019-01-23 | 2019-04-16 | 杭州嘉诚机械有限公司 | Portable speed reducer vibration measurement module and measurement 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 |
| CN113866280A (en) * | 2021-09-17 | 2021-12-31 | 南方电网调峰调频发电有限公司检修试验分公司 | Ultrasonic detection device and method for thin-laminated dielectric composite material |
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| 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 |
| CN109632069A (en) * | 2019-01-23 | 2019-04-16 | 杭州嘉诚机械有限公司 | Portable speed reducer vibration measurement module and measurement method |
| CN113866280A (en) * | 2021-09-17 | 2021-12-31 | 南方电网调峰调频发电有限公司检修试验分公司 | Ultrasonic detection device and method for thin-laminated dielectric composite material |
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