CN202285038U - Ultrasonic array sensor for partial discharge detection - Google Patents
Ultrasonic array sensor for partial discharge detection Download PDFInfo
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- CN202285038U CN202285038U CN201120419365XU CN201120419365U CN202285038U CN 202285038 U CN202285038 U CN 202285038U CN 201120419365X U CN201120419365X U CN 201120419365XU CN 201120419365 U CN201120419365 U CN 201120419365U CN 202285038 U CN202285038 U CN 202285038U
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- partial discharge
- steel shell
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The utility model discloses an ultrasonic array sensor suitable for partial discharge detection, which belongs to the technical field of detection, and is used for monitoring and positioning partial discharge of electric al equipment. The technical scheme is that: the sensor comprises a stainless steel shell and a plurality of piezoelectric array elements which are arranged in the stainless steel shell and are crossed; the signal receiving ends of the piezoelectric array elements face a signal receiving port of the stainless steel shell; and the signal output end of each piezoelectric array element is connected with a signal acquisition device through an array element lead. The piezoelectric array elements are crossed and can measure the direction angle and the pitch angle of a partial discharge ultrasonic signal, but the number of the array elements is obviously smaller than that of the array elements of a rectangular planar array sensor, so the positioning success rate and positioning accuracy are guaranteed, the structure of a detection system is greatly simplified, and the cost of the detection system can be reduced.
Description
Technical field
The utility model relates to a kind of sensor that is used to detect the ultrasonic signal that local discharge of electrical equipment produces, and belongs to the detection technique field.
Background technology
The ultrasound phase-control array sensor is a partial discharge detecting sensor based commonly used at present, and existing ultrasound phase-control array sensor mainly contains two kinds, and a kind of is the linear array sensor, and another kind is a rectangle plane type sensor array.
The linear array sensor has " axle " symmetry; It is fuzzy to occur the space during location, and simultaneously, the linear array sensor can only be a coordinate direction direction finding; Can not obtain deflection, the angle of pitch of type local-discharge ultrasonic ripple signal simultaneously, position success rate and bearing accuracy are not high.
Rectangle plane type sensor array can scan direction finding to whole plane space; Obtain deflection, the angle of pitch of type local-discharge ultrasonic ripple signal simultaneously; But because rectangle plane type sensor array element number of array is many, the array redundance is big, causes that detection system is complicated, cost is expensive.
Therefore, be necessary the structure of conventional ultrasound phased-array transducer is improved.
The utility model content
The purpose of the utility model is to provide a kind of supersonic array sensor that is applicable to Partial Discharge Detection, when guaranteeing the shelf depreciation bearing accuracy, simplifies the structure of sensor, reduces the manufacturing cost of sensor.
The said problem of the utility model realizes with following technical proposals:
A kind of supersonic array sensor that is applicable to Partial Discharge Detection; Comprise Stainless Steel Shell and a plurality of piezoelectricity array elements that are installed in the Stainless Steel Shell in the formation; Said a plurality of piezoelectricity array element is arranged in cruciform; Their signal receiving end is towards the signal receiving port of Stainless Steel Shell, and the signal output part of piezoelectricity array element connects signal pickup assembly through the array element lead-in wire.
The above-mentioned supersonic array sensor that is applicable to Partial Discharge Detection, the signal receiving port of said Stainless Steel Shell is provided with the stainless steel cuticula, between Stainless Steel Shell and piezoelectricity array element, is provided with the silicon rubber filling thing.
The above-mentioned supersonic array sensor that is applicable to Partial Discharge Detection is provided with the acoustic damping piece between piezoelectricity array element and array element lead-in wire.
The above-mentioned supersonic array sensor that is applicable to Partial Discharge Detection, said piezoelectricity array element is provided with nine.
The piezoelectricity array element of the utility model is arranged in cruciform; Can record the deflection and the angle of pitch of type local-discharge ultrasonic ripple signal simultaneously; But element number of array obviously reduces than rectangle plane type sensor array; So just when guaranteeing position success rate and bearing accuracy, simplify the structure of detection system greatly, reduced the cost of detection system.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the cross sectional representation of the utility model;
Fig. 2 is the longitudinal section synoptic diagram of the utility model.
Each label is among the figure: 1, cable; 2, gland nut; 3, stainless steel cover; 4, array element lead-in wire; 5, shape of the mouth as one speaks circle; 6, acoustic damping piece; 7, piezoelectricity array element; 8, Stainless Steel Shell; 9, silicon rubber filling thing; 10, stainless steel cuticula.
Embodiment
Referring to Fig. 1, Fig. 2; The utility model is mainly by Stainless Steel Shell 8 and be arranged on nine inner piezoelectricity array elements 7 of Stainless Steel Shell 8 and constitute; Be provided with silicon rubber filling thing 9 between Stainless Steel Shell 8 and the piezoelectricity array element 7; Nine piezoelectricity array elements 7 are arranged in cruciform, and are connected with cable 1 through array element lead-in wire 4, are provided with stainless steel cuticula 10 at the signal receiving port of Stainless Steel Shell 8.The center distance of adjacent piezoelectricity array element 7 is 6mm, the half-wavelength of corresponding common type local-discharge ultrasonic ripple signal.The cross section of each piezoelectricity array element 7 is a disc, and radius 2mm, array element thickness are 14mm.
This supersonic array sensor can directly be placed in the electrical equipment outer wall after installing magnetic medium additional; And through cable access high-speed data synchronous acquisition device; Can obtain good type local-discharge ultrasonic ripple signal and form Array Model, for realizing that putting the location based on the office of Array Signal Processing establishes good basis.
Claims (4)
1. supersonic array sensor that is applicable to Partial Discharge Detection; It is characterized in that; It comprises Stainless Steel Shell (8) and is installed in a plurality of piezoelectricity array elements (7) in the Stainless Steel Shell (8); Said a plurality of piezoelectricity array elements (7) are arranged in cruciform, and their signal receiving end is towards the signal receiving port of Stainless Steel Shell (8), and the signal output part of piezoelectricity array element (7) connects signal pickup assembly through array element lead-in wire (4).
2. according to the said supersonic array sensor that is applicable to Partial Discharge Detection of claim 1; It is characterized in that; The signal receiving port of said Stainless Steel Shell (8) is provided with stainless steel cuticula (10), between Stainless Steel Shell (8) and piezoelectricity array element (7), is provided with silicon rubber filling thing (9).
3. according to claim 1 or the 2 said supersonic array sensors that are applicable to Partial Discharge Detection, it is characterized in that, between piezoelectricity array element (7) and array element lead-in wire (4), be provided with acoustic damping piece (6).
4. according to the said supersonic array sensor that is applicable to Partial Discharge Detection of claim 3, it is characterized in that said piezoelectricity array element (7) is provided with nine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120419365XU CN202285038U (en) | 2011-10-29 | 2011-10-29 | Ultrasonic array sensor for partial discharge detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120419365XU CN202285038U (en) | 2011-10-29 | 2011-10-29 | Ultrasonic array sensor for partial discharge detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202285038U true CN202285038U (en) | 2012-06-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120419365XU Expired - Fee Related CN202285038U (en) | 2011-10-29 | 2011-10-29 | Ultrasonic array sensor for partial discharge detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202285038U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155586A (en) * | 2014-08-21 | 2014-11-19 | 华北电力大学（保定） | Transformer partial discharge ultrasonic vector array positioning device and manufacturing method thereof |
| CN105929312A (en) * | 2016-04-28 | 2016-09-07 | 华北电力大学（保定） | Electrical equipment partial discharge source direction finding apparatus |
| US20180017634A1 (en) * | 2016-07-15 | 2018-01-18 | Tdk Corporation | Sensor Unit |
| CN107621272A (en) * | 2016-07-15 | 2018-01-23 | Tdk株式会社 | Sensor unit |
| CN107966206A (en) * | 2017-11-07 | 2018-04-27 | 华北电力大学（保定） | A kind of array signal denoising method of fiber ultrasonic sensor array |
| US11156587B2 (en) * | 2017-08-18 | 2021-10-26 | Jiangsu University | Flexible sensor with piezoelectric array applied for weld defect detection based on feature guided waves and its testing method |
| CN117347797A (en) * | 2023-09-28 | 2024-01-05 | 中国长江电力股份有限公司 | Ultrasonic array detection device and method for partial discharge |
-
2011
- 2011-10-29 CN CN201120419365XU patent/CN202285038U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155586B (en) * | 2014-08-21 | 2015-05-13 | 华北电力大学（保定） | Transformer partial discharge ultrasonic vector array positioning device and manufacturing method thereof |
| CN104155586A (en) * | 2014-08-21 | 2014-11-19 | 华北电力大学（保定） | Transformer partial discharge ultrasonic vector array positioning device and manufacturing method thereof |
| CN105929312B (en) * | 2016-04-28 | 2019-03-26 | 华北电力大学（保定） | A kind of electrical equipment partial discharge source direction-finding device |
| CN105929312A (en) * | 2016-04-28 | 2016-09-07 | 华北电力大学（保定） | Electrical equipment partial discharge source direction finding apparatus |
| US20180017634A1 (en) * | 2016-07-15 | 2018-01-18 | Tdk Corporation | Sensor Unit |
| CN107621272A (en) * | 2016-07-15 | 2018-01-23 | Tdk株式会社 | Sensor unit |
| US10634734B2 (en) | 2016-07-15 | 2020-04-28 | Tdk Corporation | Sensor unit |
| CN107621272B (en) * | 2016-07-15 | 2021-06-04 | Tdk株式会社 | Sensor unit |
| US11313920B2 (en) | 2016-07-15 | 2022-04-26 | Tdk Corporation | Sensor unit |
| US11630165B2 (en) | 2016-07-15 | 2023-04-18 | Tdk Corporation | Sensor unit |
| US11156587B2 (en) * | 2017-08-18 | 2021-10-26 | Jiangsu University | Flexible sensor with piezoelectric array applied for weld defect detection based on feature guided waves and its testing method |
| CN107966206A (en) * | 2017-11-07 | 2018-04-27 | 华北电力大学（保定） | A kind of array signal denoising method of fiber ultrasonic sensor array |
| CN117347797A (en) * | 2023-09-28 | 2024-01-05 | 中国长江电力股份有限公司 | Ultrasonic array detection device and method for partial discharge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20131029 |