CN106353653A - Suction disk type local discharging ultrasonic transducer - Google Patents
Suction disk type local discharging ultrasonic transducer Download PDFInfo
- Publication number
- CN106353653A CN106353653A CN201610894694.7A CN201610894694A CN106353653A CN 106353653 A CN106353653 A CN 106353653A CN 201610894694 A CN201610894694 A CN 201610894694A CN 106353653 A CN106353653 A CN 106353653A
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- Prior art keywords
- stainless steel
- amplifying circuit
- silicon rubber
- connecting rod
- wall
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
The invention discloses a suction disk type local discharging ultrasonic transducer, which comprises a stainless steel case, an ultrasonic conditioning plate, an output connector, a connecting rod, a shielding cover, a sound isolation tube, a piezoelectric ceramic vibrator, a silicon rubber suction disk, a sealing baffle plate and a threaded silicon rubber outer wall, wherein the ultrasonic conditioning plate is arranged in the stainless steel case; the output connector is arranged on the stainless steel case; the front end of the stainless steel case is provided with the connecting rod; the shielding cover is connected with the connecting rod; the sound isolation tube is arranged in the shielding cover; the piezoelectric ceramic vibrator is arranged in a cavity of the sound isolation tube; the silicon rubber suction disk is arranged at the front end of the sound isolation tube; the threaded silicon rubber outer wall is connected with the stainless steel case; the sealing baffle plate, the threaded silicon rubber outer wall and the silicon rubber suction disk form a vacuum air chamber; the connecting rod penetrates through the sealing baffle plate to be connected with the shielding cover. The suction disk type local discharging ultrasonic transducer has high receiving sensitivity on ultrasonic waves; in addition, the electromagnetic interference resistance capability is high; the use is very convenient; the effective contact on high-voltage electric equipment outer walls which are made of various materials and are of different shapes can be ensured; the accurate monitoring is realized; in addition, the installation is convenient; the work efficiency is high.
Description
Technical field:
The present invention relates to the Partial Discharge Detection of high voltage electric equipment and FLT field are and in particular to a kind of inhale
Disc type shelf depreciation ultrasonic sensor.
Background technology:
Shelf depreciation is the important indicator of the insulating properties of assessment high voltage electric equipment.Produce local inside High-Voltage Electrical Appliances to put
Electrical phenomena, the energy of its abrupt release makes intermolecular generation sharp impacts, and produces ultrasound wave macroscopically forming a kind of pressure
Pulse, now for example same sound source of Partial Discharge Sources, sends out ultrasound wave.Existing ultrasonic sensor is typically all magnetic
Attached formula, can adsorb in material on the outer wall of ferrum, such as transformator, reactor etc., but the outer shell material of some high pressure equipmentes
Expect that for aluminum, the such as switchgear such as gis, magnetic suck sonac cannot adsorb gis outer wall, needs operator with handss always
Pin, be easily caused measurement error, have a strong impact on work efficiency.
Content of the invention:
It is an object of the invention to provide a kind of sucked type shelf depreciation ultrasonic sensor, not only ultrasound wave is had higher
Receiving sensitivity, and anti-electromagnetic interference capability is strong, ensure that in various materials and high voltage electric equipment of different shapes
Outer wall effective contact, realizes accurate measurements, and easy for installation, high working efficiency, is particularly suitable for detecting the high-tension electricity that material is aluminum
The ultrasonic signal that gas device interior shelf depreciation produces.
The present invention is achieved by the following technical programs:
A kind of sucked type shelf depreciation ultrasonic sensor, ultrasonic including arrange in stainless steel casing, stainless steel casing
Connecting rod that out splice going splice that ripple conditioning plate, stainless steel casing are provided with, stainless steel casing front end are provided with, connect with connecting rod
In the sound insulation cylinder of the interior setting of radome, radome, sound insulation barrel chamber body, the piezoelectric ceramic vibrator being provided with, the silica gel of sound insulation cylinder front end are inhaled
Disk, additionally includes sealing baffle and screw-like silica gel outer wall, and described screw-like silica gel outer wall connects with stainless steel casing, described
Sealing baffle, screw-like silica gel outer wall and silicon rubber suction cup form vacuum room, and described connecting rod runs through sealing baffle with radome
Connect.
Described ultrasound wave conditioning plate includes impedance conversion module, first order amplifying circuit, second level amplifying circuit, the third level
Amplifying circuit and fourth stage amplifying circuit, first carry out impedance change by impedance conversion module middle impedance coupling audion to input signal
Change, 5 times of ultrasonic signal filter and amplification piezoelectric ceramic vibrator being received in first order amplifying circuit, then signal is through
Two grades of amplifying circuits amplify 20 times, then amplify 50 times by third level amplifying circuit, finally amplify 100 by fourth stage amplifying circuit
Again out splice going splice output is connected by radio frequency line.
Especially, described piezoelectric ceramic vibrator is lamellar.
Described sucked type shelf depreciation ultrasonic sensor adopt piezoelectric ceramic vibrator coupling ultrasonic ripple signal, and by every
Sound cylinder and other metal parts isolation, piezoelectric ceramic vibrator connects ultrasound wave conditioning plate, described ultrasound wave conditioning by connecting rod
Plate first carries out impedance conversion by impedance matching audion, the ultrasound wave receiving piezoelectric ceramic vibrator in first order amplifying circuit
Signal filtering amplifies 5 times, and then signal amplifies 20 times through second level amplifying circuit, then amplifies 50 by third level amplifying circuit
Times, finally amplify 100 times by fourth stage amplifying circuit, eventually pass impedance conversion and effective ultrasound wave letter is exported by out splice going splice
Number, by background process data, carry out ad conversion, obtain ultrasonic signal amplitude, phase place, energy, discharge time, determine discharge fault
Point position.
Using connecting rod compress piezoelectric ceramic vibrator, press sealing baffle, compression vacuum air chamber, close using silicon rubber suction cup
Feng Xing, produces negative pressure it is ensured that piezoelectric ceramic vibrator and the effective reliable contacts of high voltage electric equipment outer wall inside vacuum room.
Stainless steel casing can be effectively protected ultrasound wave conditioning plate and out splice going splice tackles the impact of external stress, prevents
Damage ultrasound wave conditioning plate and out splice going splice.
Beneficial effects of the present invention are as follows:
The present invention not only has higher receiving sensitivity to ultrasound wave, and anti-electromagnetic interference capability is strong, using very
Convenient, ensure that in various materials and high voltage electric equipment outer wall effective contact of different shapes, realize accurate measurements, and pacify
Dress is convenient, high working efficiency, is particularly suitable for detecting the ultrasound wave that the internal shelf depreciation of high voltage electric equipment that material is aluminum produces
Signal.
Brief description:
Fig. 1 is the structure vertical section schematic diagram of the present invention；
Wherein, 1, stainless steel casing, 2, ultrasound wave conditioning plate, 3, out splice going splice, 4, connecting rod, 5, radome, 6, sound insulation
Cylinder, 7, piezoelectric ceramic vibrator, 8, silicon rubber suction cup, 9, sealing baffle, 10, screw-like silica gel outer wall, 11, vacuum room.
Fig. 2 is ultrasound wave conditioning plate schematic diagram；
Wherein, q1 is impedance matching audion, and u1 is first order amplifying circuit, amplifies 5 times, and u2 is that line is amplified in the second level
Road, amplifies 20 times, u3 is 3rd level amplifying circuit, amplifies 50 times, u4 is fourth stage amplifying circuit, amplifies 100 times.
Specific embodiment:
The following is and the present invention is further illustrated, rather than limitation of the present invention.
A kind of sucked type shelf depreciation ultrasonic sensor as shown in Figure 1, including stainless steel casing 1, stainless steel casing 1
The connection that out splice going splice 3 that the ultrasound wave conditioning plate 2 of interior setting, stainless steel casing 1 are provided with, stainless steel casing 1 front end are provided with
Bar 4, the chip type piezoelectric with being provided with connecting rod 4 radome 5 connecting, the sound insulation cylinder 6 arranging in radome 5, sound insulation cylinder 6 cavity
Ceramic vibrator 7, the silicon rubber suction cup 8 of sound insulation cylinder 6 front end, additionally include sealing baffle 9 and screw-like silica gel outer wall 10, described spiral shell
Stricture of vagina shape silica gel outer wall 10 connects with stainless steel casing 1, and described sealing baffle 9, screw-like silica gel outer wall 10 and silicon rubber suction cup 8 are formed
Vacuum room 11, described connecting rod 4 runs through sealing baffle 9 and connects with radome 5.
Described ultrasound wave conditioning plate 2 include impedance conversion module, first order amplifying circuit, second level amplifying circuit, the 3rd
Level amplifying circuit and fourth stage amplifying circuit, are first hindered to input signal by impedance conversion module middle impedance coupling audion q1
Resistance changes, 5 times of the ultrasonic signal filter and amplification receiving piezoelectric ceramic vibrator in first order amplifying circuit u1, then signal
Amplify 20 times through second level amplifying circuit u2, then amplify 50 times by third level amplifying circuit u3, finally amplified by the fourth stage
Circuit u4 amplifies 100 times, connects out splice going splice 3 by radio frequency line and exports.
In high voltage electric equipment shelf depreciation produce ultrasound wave with sphere waveshape to around propagate, produce ultrasound wave
Type analysis compressional wave and shear wave, when ultrasound wave passes to outer wall, be divided into two parts, a part passes through tank wall, still with longitudinal waves
Outwards propagate, another part then with shear wave form along tank wall to around propagating.During use, compress piezoelectric ceramics using connecting rod 4
Oscillator 7, presses sealing baffle 9, compression vacuum air chamber 11, using the sealing of silicon rubber suction cup 8, produces inside vacuum room 11
Negative pressure is it is ensured that piezoelectric ceramic vibrator 7 and the effective reliable contacts of high voltage electric equipment outer wall, described sucked type shelf depreciation ultrasound wave
Sensor adopts lamellar by piezoelectric ceramic vibrator 7 coupling ultrasonic ripple signal, and by sound insulation cylinder 6 and other metal parts isolation,
Ultrasonic signal is transferred to ultrasound wave conditioning plate 2 by connecting rod 4 by piezoelectric ceramic vibrator 7, as shown in Fig. 2 ultrasound wave conditioning plate 2
First impedance conversion is carried out by impedance matching audion q1, first order amplifying circuit u1 by piezoelectric ceramic vibrator receive ultrasonic
Ripple signal filtering amplifies 5 times, and then signal, through second level amplifying circuit u2, amplifies 20 times, then by third level amplifying circuit
U3, amplifies 50 times, finally amplifies 100 times by fourth stage amplifying circuit u4, and eventually passing impedance conversion is had by out splice going splice 3 output
50 ohm of coupling ultrasonic signals of effect, by background process data, carry out ad conversion, obtain ultrasonic signal amplitude, phase place, energy
Amount, discharge time, determine discharge fault point position.
Stainless steel casing can be effectively protected ultrasound wave conditioning plate and out splice going splice tackles the impact of external stress, prevents
Damage ultrasound wave conditioning plate and out splice going splice.
Claims (3)
1. a kind of sucked type shelf depreciation ultrasonic sensor is it is characterised in that set in inclusion stainless steel casing, stainless steel casing
Connecting rod that out splice going splice that the ultrasound wave conditioning plate put, stainless steel casing are provided with, stainless steel casing front end are provided with, with connecting
The piezoelectric ceramic vibrator that is provided with radome that bar connects, the sound insulation cylinder of setting in radome, sound insulation barrel chamber body, sound insulation cylinder front end
Silicon rubber suction cup, additionally include sealing baffle and screw-like silica gel outer wall, described screw-like silica gel outer wall is with stainless steel casing
Connect, described sealing baffle, screw-like silica gel outer wall and silicon rubber suction cup form vacuum room, described connecting rod runs through sealing baffle
Connect with radome.
2. sucked type shelf depreciation ultrasonic sensor according to claim 1 is it is characterised in that described ultrasound wave is nursed one's health
Plate includes impedance conversion module, first order amplifying circuit, second level amplifying circuit, third level amplifying circuit and the fourth stage and amplifies line
Road, first carries out impedance conversion by impedance conversion module middle impedance coupling audion to input signal, will in first order amplifying circuit
5 times of the ultrasonic signal filter and amplification that piezoelectric ceramic vibrator receives, then signal through second level amplifying circuit amplify 20 times,
Then amplify 50 times by third level amplifying circuit, finally amplify 100 times by fourth stage amplifying circuit and output is connected by radio frequency line
Joint exports.
3. sucked type shelf depreciation ultrasonic sensor according to claim 1 is it is characterised in that described piezoelectric ceramic vibrator
Son is lamellar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610894694.7A CN106353653A (en) | 2016-10-13 | 2016-10-13 | Suction disk type local discharging ultrasonic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610894694.7A CN106353653A (en) | 2016-10-13 | 2016-10-13 | Suction disk type local discharging ultrasonic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106353653A true CN106353653A (en) | 2017-01-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610894694.7A Pending CN106353653A (en) | 2016-10-13 | 2016-10-13 | Suction disk type local discharging ultrasonic transducer |
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| CN (1) | CN106353653A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808205A (en) * | 2018-07-25 | 2018-11-13 | 苏州国华特种线材有限公司 | A kind of high intensity High-frequency alloy oscillator |
| CN113654799A (en) * | 2021-07-08 | 2021-11-16 | 重庆广播电视大学重庆工商职业学院 | Engine vibration detection device |
| CN116609627A (en) * | 2023-06-15 | 2023-08-18 | 国网江苏省电力有限公司电力科学研究院 | Partial discharge detection device and method based on pressure monitoring |
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| CN201903615U (en) * | 2010-12-18 | 2011-07-20 | 保定天威新域科技发展有限公司 | Self-absorption gas insulated switchgear (GIS) partial discharge detection sensor |
| CN203150987U (en) * | 2013-03-08 | 2013-08-21 | 扬州市庆源电气成套设备有限公司 | Intelligent vacuum ring net switch device |
| CN204989231U (en) * | 2015-06-01 | 2016-01-20 | 国网天津市电力公司 | Transformer ultrasonic method partial discharge detector signal transducer fixing device |
| CN206235700U (en) * | 2016-10-13 | 2017-06-09 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of sucked type shelf depreciation ultrasonic sensor |
-
2016
- 2016-10-13 CN CN201610894694.7A patent/CN106353653A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201903615U (en) * | 2010-12-18 | 2011-07-20 | 保定天威新域科技发展有限公司 | Self-absorption gas insulated switchgear (GIS) partial discharge detection sensor |
| CN203150987U (en) * | 2013-03-08 | 2013-08-21 | 扬州市庆源电气成套设备有限公司 | Intelligent vacuum ring net switch device |
| CN204989231U (en) * | 2015-06-01 | 2016-01-20 | 国网天津市电力公司 | Transformer ultrasonic method partial discharge detector signal transducer fixing device |
| CN206235700U (en) * | 2016-10-13 | 2017-06-09 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of sucked type shelf depreciation ultrasonic sensor |
Non-Patent Citations (1)
| Title |
|---|
| 国家电网公司武汉高压研究所著: "《电力监测与故障诊断技术全书 GIS、开关卷 上》", 30 September 2005 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808205A (en) * | 2018-07-25 | 2018-11-13 | 苏州国华特种线材有限公司 | A kind of high intensity High-frequency alloy oscillator |
| CN108808205B (en) * | 2018-07-25 | 2024-02-23 | 苏州国华特种线材有限公司 | High-strength high-frequency alloy vibrator |
| CN113654799A (en) * | 2021-07-08 | 2021-11-16 | 重庆广播电视大学重庆工商职业学院 | Engine vibration detection device |
| CN116609627A (en) * | 2023-06-15 | 2023-08-18 | 国网江苏省电力有限公司电力科学研究院 | Partial discharge detection device and method based on pressure monitoring |
| CN116609627B (en) * | 2023-06-15 | 2024-03-08 | 国网江苏省电力有限公司电力科学研究院 | Partial discharge detection device and method based on pressure monitoring |
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Application publication date: 20170125 |
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| RJ01 | Rejection of invention patent application after publication |