CN102305881A - Adsorption device for acoustic emission sensor - Google Patents
Adsorption device for acoustic emission sensor Download PDFInfo
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- CN102305881A CN102305881A CN201110136339A CN201110136339A CN102305881A CN 102305881 A CN102305881 A CN 102305881A CN 201110136339 A CN201110136339 A CN 201110136339A CN 201110136339 A CN201110136339 A CN 201110136339A CN 102305881 A CN102305881 A CN 102305881A
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Abstract
The invention relates to the technical field of partial discharge measurement, and discloses an adsorption device for an acoustic emission sensor. The device comprises a pressing plate, a position adjusting rotary column, a fixed bolt block, a sensor pad, a sensor seat, a strong magnet and other parts. The center line of the front surface of the sensor seat is provided with a conducting wire slot to facilitate leading a conducting wire at the tail end of the sensor out. The device is mainly characterized in that: the acoustic emission sensor is quickly adsorbed and fixed on the surface of power equipment, which is provided with a magnetic material, the specific position of the sensor can be adjusted by adjusting a knob, and human interference factors in the measuring process can be reduced. The adsorption device is simple in structure, easy to implement and good in practical effect in field.
Description
Technical field
The adsorbent equipment of calibrate AE sensor, the ultrasonic method that relates to equipment such as power switch cabinet, GIS, power transformer detects the partial discharges fault technical field; It is a kind of technology that the absorption of the calibrate AE sensor in the detection method is installed to equipment surface to be detected.
Background technology
Power equipment switch cubicle, GIS, power transformer etc. because long-term charging operation causes ageing equipment, insulation degradation phenomenon down, when there are various defective in aging and insulation, just produce shelf depreciation.Shelf depreciation not only produces electric signal, and is attended by acoustical signal and ultrahigh frequency Electromagnetic Launching, and causes decomposing gas.So monitoring method has sound detection, electrical measuring method, chemical measurement, flash spotting and ultrahigh frequency magnetic survey method etc.
Partial discharge pulse is a broadband laser pulse, and its radio-frequency component is from 0HZ to GHZ, and the acoustic emission measurement of partial discharge is the measure local discharge in the 10KHz-100KHz scope.Adopt sound detection, detect and analyze, just can in time find the position of trouble spot, and the grade of local fault is assessed and judged through acoustical signal to local discharge generation.Sound detection more and more by vast work about electric power person's approval, and has been brought into play huge effectiveness as detecting and judging one of effective ways of partial discharges fault in practical application.
In electrical equipment, when shelf depreciation takes place, adopt calibrate AE sensor collection office discharge signal, the amplitude that instrument can detection signal, frequency content and with the correlation analysis of work frequency.Whether judgment device inside exists shelf depreciation, and character and seriousness is a little put in office.Calibrate AE sensor detects the core component of shelf depreciation as sound detection, and it is to ultrasonic signal in the environment and sensitivity thereof, when hand-held sensor is measured in the measuring process, artificial rock and all can have influence on measurement result with the slight friction of equipment.How on-the-spot in the electric power detection of complicacy, fast the noiseless absorption of calibrate AE sensor is installed to equipment surface to be detected, will directly influence the accuracy and the work efficiency of measurement.The adsorbent equipment of calibrate AE sensor; To equipment such as the surperficial switch cubicle of the on-the-spot iron material (or having ferromagnetic steel) of electric power, GIS, power transformers; Can be absorbed and fixed at the power equipment surface with calibrate AE sensor is rapidly noiseless, thereby reach the purpose that fault is put in high-level efficiency detection office.
Summary of the invention
The adsorbent equipment of calibrate AE sensor mainly is to the electric power field apparatus with ferrimagnet surface, considers fast calibrate AE sensor to be absorbed and fixed at these power equipment surfaces, and can reduce the artificial interference factor in the measuring process.
The present invention considers that some power equipment has the ferrimagnet surface; Utilize magnet can be adsorbed onto the characteristic of these material surfaces; The bottom of sensor holder is embedded bar magnet; And calibrate AE sensor put into the inner space of sensor holder, regulate the particular location of sensor again through adjustable knob.In conjunction with these technology and structure, just the adsorbent equipment of calibrate AE sensor has been invented in design.
Through the present invention, operation steps is following in measuring process:
1) operating personnel put into sensor holder with the cylindrical acoustic emission sensor, and sensor lead is drawn from the metallic channel of sensor holder;
2) adjusting knob of rotation sensor top makes the induction end face of sensor concordant with the bottom surface of sensor holder;
3) on the ferrimagnet surface of power equipment to be detected, select suitable more smooth position, the bottom surface that the sensor holder of magnet is housed is adsorbed onto equipment surface, after the affirmation installation is closely solid, hand is taken away the installation of adsorbent equipment.
Technical scheme of the present invention is:
This device revolves post, gim peg piece, sensor mat, sensor holder, strong magnets etc. by pressing plate, position adjustments and partly constitutes, and has metallic channel on the sensor holder front center line, makes things convenient for the lead of transducer tip to draw.
Pressing plate is the aluminum metal slab construction of 3 millimeters thick, and surface lacquer is handled; Position adjustments is revolved the post aluminum metallic material, and top is manual knob, and Lower Half is connected with the female thread structure at gim peg piece center for being with externally threaded cylindrical structure; Sensor mat is the PTFE that gathers of surface finish processing, is the circular ring structure of center band step through-hole, is connected to the end that position adjustments is revolved post through screw; Sensor holder is the cuboidal configuration of two middle side part hollow outs, and two side bottoms are groove shape structure, and the middle part is the cylindrical space of hollow, and strong magnets is elongated rectangular structure, and plating nickel on surface is handled, and is mounted in the groove shape structure of sensor holder two side bottoms.
The present invention can also can be used as the safety guard of sensor simultaneously with putting into inner calibrate AE sensor adsorbed close to the equipment under test surface, avoids the interference of outside human factor.Thereby reach the Fast Installation sensor, accurately the effect of measuring-signal.The present invention is simple in structure, is easy to realize that on-the-spot practical function is good.
Description of drawings
Fig. 1 is the structural representation of this device;
Label among Fig. 1: (1) pressing plate, (2) position adjustments are revolved post, (3) gim peg piece, (4), sensor mat (5), sensor holder (6), strong magnets;
The position view of sensor when Fig. 2 installs for this device
Label among Fig. 2: (1) pressing plate, (2) position adjustments are revolved post, (3) gim peg piece, (4), sensor mat (5), sensor holder (6), strong magnets (7) sensor.
Claims (5)
1. the absorption mounting structure of a calibrate AE sensor.This absorption mounting structure includes (1) pressing plate (2) position adjustments and revolves post (3) gim peg piece (4) sensor mat (5) sensor holder (6) strong magnets;
The absorption mounting structure of the calibrate AE sensor of telling, its (1) pressing plate is positioned at the outer tip end of (5) sensor holder, and (3) the gim peg piece with placing (5) sensor holder inwall is connected through screw; (2) position adjustments is revolved the circular hole of post through (1) pressing plate center, and (3) gim peg piece interior with (5) sensor links to each other; (4) sensor mat revolves the end of post through screw retention in (2) position adjustments, in (5) sensor holder two bottom sides groove the strip strong magnets is housed, and has metallic channel on the front center line at the bottom of (5) sensor holder
2. the absorption mounting structure of calibrate AE sensor according to claim 1; It is characterized in that: (1) pressing plate is the slab construction of 3 millimeters thick; (2) to revolve post top be manual knob to position adjustments; Lower Half is for being with externally threaded cylindrical structure; (3) gim peg piece center is the circular ring structure that has internal thread; (4) sensor mat is the circular ring structure of center band step through-hole; (5) sensor holder is the cuboidal configuration of two middle side part hollow outs; Two side bottoms are groove shape structure; The middle part is the cylindrical space of hollow, and (6) strong magnets is elongated rectangular structure
3. the absorption mounting structure of calibrate AE sensor according to claim 1; It is characterized in that: (1) pressing plate is the aluminum metallic material of 3 millimeters thick, and surface lacquer is handled, and it is aluminum metallic material that (2) position adjustments is revolved post; The outside surface oxidation processes; (3) the gim peg piece is an aluminum metallic material, the surface finish oxidation processes, and (4) sensor mat is for gathering PTFE; Surface finish is handled; (5) sensor holder is a high strength bakelite material, and (6) strong magnets is a magnetic material, and plating nickel on surface is handled
4. the absorption mounting structure of calibrate AE sensor according to claim 1 is characterized in that: revolve post through rotation (2) position adjustments, (4) sensor mat is moved up and down in the inner space of (5) sensor holder
5. the absorption mounting structure of calibrate AE sensor according to claim 1; It is characterized in that: calibrate AE sensor can be built in the cylindrical space in (5) sensor holder; Can make (5) sensor holder be close to the surface of ferromagnetism equipment through (6) strong magnets; Rotation (2) position adjustments is revolved post, can make the calibrate AE sensor adsorbed close at device outer surface
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110136339A CN102305881A (en) | 2011-05-25 | 2011-05-25 | Adsorption device for acoustic emission sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110136339A CN102305881A (en) | 2011-05-25 | 2011-05-25 | Adsorption device for acoustic emission sensor |
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| Publication Number | Publication Date |
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| CN102305881A true CN102305881A (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110136339A Pending CN102305881A (en) | 2011-05-25 | 2011-05-25 | Adsorption device for acoustic emission sensor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837227A (en) * | 2014-03-21 | 2014-06-04 | 国家电网公司 | Piezoelectric sensor |
| CN104035434A (en) * | 2014-06-13 | 2014-09-10 | 武汉理工大学 | Air leakage monitoring system for diesel engine air valve |
| CN104330018A (en) * | 2014-10-31 | 2015-02-04 | 东南大学 | Measuring unit for measuring diameter of slewing bearing roller bed |
| CN104344884A (en) * | 2013-07-26 | 2015-02-11 | 珠海格力电器股份有限公司 | Installation protection device for sensor and vibration detection device for air-conditioner |
| CN104880651A (en) * | 2015-05-28 | 2015-09-02 | 国网山西省电力公司电力科学研究院 | Transformer internal partial discharge determination device and positioning method thereof |
| CN109307787A (en) * | 2018-10-15 | 2019-02-05 | 国网青海省电力公司西宁供电公司 | A kind of fixed device of ultra high-frequency partial discharge sensor |
| CN112762290A (en) * | 2020-12-31 | 2021-05-07 | 哈尔滨工业大学 | L-shaped acoustic emission sensor array clamp and test method for detecting gas leakage |
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| CN201149587Y (en) * | 2008-01-22 | 2008-11-12 | 长沙理工大学 | Fixed bearing with continuously adjustable clamping force for acoustic emission sensor |
| JP2009039821A (en) * | 2007-08-09 | 2009-02-26 | Tokyo Seimitsu Co Ltd | Fixture and sensor fixing method |
| CN201673176U (en) * | 2010-04-29 | 2010-12-15 | 山东电力集团公司济南供电公司 | Sensor fixing device |
| CN201788196U (en) * | 2010-05-20 | 2011-04-06 | 北京兴泰学成仪器有限公司 | Fixing device for acoustic emission sensor |
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2011
- 2011-05-25 CN CN201110136339A patent/CN102305881A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009039821A (en) * | 2007-08-09 | 2009-02-26 | Tokyo Seimitsu Co Ltd | Fixture and sensor fixing method |
| CN201149587Y (en) * | 2008-01-22 | 2008-11-12 | 长沙理工大学 | Fixed bearing with continuously adjustable clamping force for acoustic emission sensor |
| CN201673176U (en) * | 2010-04-29 | 2010-12-15 | 山东电力集团公司济南供电公司 | Sensor fixing device |
| CN201788196U (en) * | 2010-05-20 | 2011-04-06 | 北京兴泰学成仪器有限公司 | Fixing device for acoustic emission sensor |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344884A (en) * | 2013-07-26 | 2015-02-11 | 珠海格力电器股份有限公司 | Installation protection device for sensor and vibration detection device for air-conditioner |
| CN103837227A (en) * | 2014-03-21 | 2014-06-04 | 国家电网公司 | Piezoelectric sensor |
| CN104035434A (en) * | 2014-06-13 | 2014-09-10 | 武汉理工大学 | Air leakage monitoring system for diesel engine air valve |
| CN104330018A (en) * | 2014-10-31 | 2015-02-04 | 东南大学 | Measuring unit for measuring diameter of slewing bearing roller bed |
| CN104330018B (en) * | 2014-10-31 | 2017-06-30 | 东南大学 | A kind of measuring unit for measuring rotary support raceway diameter |
| CN104880651A (en) * | 2015-05-28 | 2015-09-02 | 国网山西省电力公司电力科学研究院 | Transformer internal partial discharge determination device and positioning method thereof |
| CN109307787A (en) * | 2018-10-15 | 2019-02-05 | 国网青海省电力公司西宁供电公司 | A kind of fixed device of ultra high-frequency partial discharge sensor |
| CN112762290A (en) * | 2020-12-31 | 2021-05-07 | 哈尔滨工业大学 | L-shaped acoustic emission sensor array clamp and test method for detecting gas leakage |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gu Shengwei Inventor after: Xiao Chuanqiang Inventor before: Gu Shengwei |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: GU SHENGWEI TO: GU SHENGWEI XIAO CHUANQIANG |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |