CN205192612U - Contact partial discharge ultrasonic sensor - Google Patents
Contact partial discharge ultrasonic sensor Download PDFInfo
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- CN205192612U CN205192612U CN201521060470.3U CN201521060470U CN205192612U CN 205192612 U CN205192612 U CN 205192612U CN 201521060470 U CN201521060470 U CN 201521060470U CN 205192612 U CN205192612 U CN 205192612U
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Abstract
The utility model relates to a contact partial discharge ultrasonic sensor belongs to high -voltage electrical equipment technical field. Technical scheme is: contain signal reception system and signal processing system, the signal reception system contains piezoceramics oscillator (1), oscillator membrane (2), oscillator shield cover (6), constant voltage power fixing device (10), the front end and oscillator membrane (2) the laminating of piezoceramics oscillator, and the rear end is equipped with constant voltage power fixing device, signal processing system contains signal conditioning circuit board (12) and delivery outlet (11), and establish in metallic shield shell (13) bottom signal conditioning circuit board (12), and the signal output part of piezoceramics oscillator and the signal input part of signal conditioning circuit board (12) are connected. The beneficial effects of the utility model are that: have a higher reception sensitivity to the ultrasonic wave, anti -electromagnetic interference can the reinforce, is suitable for the ultrasonic signal that inside partial discharge such as the high -tension apparatus that detects large -scale power transformer produced very much.
Description
Technical field
The utility model relates to a kind of contact shelf depreciation sonac, belongs to high voltage electric equipment technical field.
Background technology
Shelf depreciation is the important indicator of the insulating property weighing high voltage electric equipment, for high-tension apparatuses such as high-power transformers, because it is bulky, complex structure, often accurately can not judge its particular location discharged, cause very large difficulty to maintenance job.
Through studying discovery for a long period of time, the time difference relation of the ultrasonic signal utilizing shelf depreciation to produce and electric signal can judge discharge position.But the ultrasonic signal spread out of from device interior is very faint, require that sonac has very high detection sensitivity.And existing domestic sonac sensitivity is general lower, faint discharge signal cannot be detected; Offshore company (as PAC company of the U.S.) although sonac sensitivity higher, belong to general purpose ultrasound sensor, do not design for strong electric field environment, capability of electromagnetic shielding is poor, be subject to electromagnetic interference (EMI), and itself do not possess magnetic suck function, uses inconvenience.
Utility model content
The utility model object is to provide a kind of contact shelf depreciation sonac, not only has higher receiving sensitivity to ultrasound wave, and anti-electromagnetic interference capability is strong, solves Problems existing in background technology.
The technical solution of the utility model is:
A kind of contact shelf depreciation sonac, it is characterized in that comprising receiving system and signal processing system, receiving system and signal processing system are located in Metal shielding shell;
Described receiving system comprises piezoelectric ceramic vibrator, oscillator film, oscillator radome, constant pressure stationary installation, piezoelectric ceramic vibrator is right cylinder, piezoelectric ceramic vibrator and oscillator film are located in oscillator radome, front end and the oscillator film of piezoelectric ceramic vibrator are fitted, rear end is provided with constant pressure stationary installation, receiving system is located on oscillator support ring, and oscillator support ring is provided with ring-shaped magnet;
Described signal processing system comprises signal conditioning circuit plate and delivery outlet, and signal conditioning circuit plate is located at bottom Metal shielding shell, and Metal shielding shell is provided with delivery outlet;
The signal output part of the piezoelectric ceramic vibrator in described receiving system is connected with the signal input part of the signal conditioning circuit plate in signal processing system.
The inner side of the oscillator film in described receiving system is provided with groove, and outside is provided with the convex edge of locating with Metal shielding shell.
Insulating mat two is provided with between oscillator film in described receiving system and oscillator support ring.
The middle part of the piezoelectric ceramic vibrator in described receiving system is provided with piezoelectric ceramic vibrator set collar.
The signal output part of the signal conditioning circuit plate in described signal processing system is by delivery outlet and Partial Discharge Detection equipment connection.
Adopt the utility model, ring-shaped magnet is utilized to be adsorbed on the shell of product to be tested by sensor, by the cylindrical piezoelectric ceramic oscillator received ultrasonic signal in receiving system, and signal conditioning circuit plate ultrasonic signal flowed in signal processing system, after the filtering of signal conditioning circuit plate, amplification, export Partial Discharge Detection equipment to by delivery outlet.
The beneficial effects of the utility model are: not only have higher receiving sensitivity to ultrasound wave, and anti-electromagnetic interference capability is strong, very easy to use, are particularly suitable for the ultrasonic signal detecting the inner shelf depreciation generation of the high-tension apparatuses such as large-scale power transformer.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
In figure: 1. piezoelectric ceramic vibrator, 2. oscillator film, 3. oscillator set collar, 4. insulating mat one, 5. insulating mat two, 6. oscillator radome, 7. ring magnet, 8. oscillator support ring, 9. piezoelectric ceramic vibrator set collar, 10. constant pressure stationary installation, 11. delivery outlets, 12. signal conditioning circuit plates, 13. Metal shielding shell.
Embodiment
Below in conjunction with accompanying drawing, by example, the utility model is described in further detail.
With reference to accompanying drawing 1, a kind of contact shelf depreciation sonac, comprises receiving system and signal processing system, and receiving system and signal processing system are located in Metal shielding shell 13;
Described receiving system comprises piezoelectric ceramic vibrator 1, oscillator film 2, oscillator radome 6, constant pressure stationary installation 10, piezoelectric ceramic vibrator 1 is in right cylinder, piezoelectric ceramic vibrator 1 and oscillator film 2 are located in oscillator radome 6, front end and the oscillator film 2 of piezoelectric ceramic vibrator 1 are fitted, rear end is provided with constant pressure stationary installation 10, receiving system is located on oscillator support ring 8, and oscillator support ring 8 is provided with ring-shaped magnet 7;
Described signal processing system comprises signal conditioning circuit plate 12 and delivery outlet 11, and signal conditioning circuit plate 12 is located at bottom Metal shielding shell 13, and Metal shielding shell 13 is provided with delivery outlet 11;
The signal output part of the piezoelectric ceramic vibrator 1 in described receiving system is connected with the signal input part of the signal conditioning circuit plate 12 in signal processing system.
In the present embodiment, piezoelectric ceramic vibrator 1 is cylindrical shape, and diameter is 10mm, is highly 20mm, and front end and oscillator film 2 fit tightly, and surface of contact scribbles ultrasonic coupling agent, are conducive to the transmission of ultrasonic signal.Groove inside oscillator film 2 is Φ 10 ~ 12mm, prevents piezoelectric ceramic vibrator 1 translation; Outside has for locating with Metal shielding shell 13, fixing convex edge.The electromagnetic screen cavity that oscillator film 2 and oscillator radome 6 are welded together to form, piezoelectric ceramic vibrator 1 is sealed in this electromagnetic screen cavity, the ultrasonic signal that side can also be suppressed to import into while being masked by the electromagnetic interference signal of outside by this shielding cavity, improves the overall antijamming capability to electroacoustic undesired signal of sensor.In the middle part of piezoelectric ceramic vibrator 1, cover has piezoelectric ceramic vibrator set collar 9, prevents piezoelectric ceramic vibrator 1 from rocking in oscillator radome 6.Piezoelectric ceramic vibrator 1 rear end is compressed by constant pressure stationary installation 10, ensures piezoelectric ceramic vibrator 1 and oscillator film 2 close contact.
Piezoelectric ceramic vibrator 1, oscillator film 2, oscillator radome 6 and constant pressure stationary installation 10 have assembled the closed receiving system of rear formation one, this system is arranged on oscillator support ring 8, being isolated by insulating mat 25 between oscillator support ring 8 and oscillator film 2, being conducted to the acoustic jamming signal of piezoelectric ceramic vibrator 1 by Metal shielding shell 13 for absorbing.1 or 2 ring-shaped magnets 7 are placed in oscillator support ring 8 top, utilize ring-shaped magnet 7 sensor can be adsorbed on the shell of product to be tested.Receiving system is fixed by oscillator set collar 3 and oscillator support ring 8.Isolated by insulating mat 1 between oscillator set collar 3 and oscillator film 2.After the assembling of above each several part entirety, be placed on the boss of Metal shielding shell 13 inwall, compress oscillator set collar 3 by Metal shielding shell 13 along to adduction limit.
The signal output part of the piezoelectric ceramic vibrator 1 in receiving system receives the signal input part of the signal conditioning circuit plate 12 bottom Metal shielding shell 13, and signal exports Partial Discharge Detection equipment to by delivery outlet 11 after signal conditioning circuit plate 12 filtering, amplification.
Claims (5)
1. a contact shelf depreciation sonac, is characterized in that comprising receiving system and signal processing system, and receiving system and signal processing system are located in Metal shielding shell (13);
Described receiving system comprises piezoelectric ceramic vibrator (1), oscillator film (2), oscillator radome (6), constant pressure stationary installation (10), piezoelectric ceramic vibrator (1) is in right cylinder, piezoelectric ceramic vibrator (1) and oscillator film (2) are located in oscillator radome (6), front end and the oscillator film (2) of piezoelectric ceramic vibrator (1) are fitted, rear end is provided with constant pressure stationary installation (10), receiving system is located on oscillator support ring (8), and oscillator support ring (8) is provided with ring-shaped magnet (7);
Described signal processing system comprises signal conditioning circuit plate (12) and delivery outlet (11), and signal conditioning circuit plate (12) is located at Metal shielding shell (13) bottom, and Metal shielding shell (13) is provided with delivery outlet (11);
The signal output part of the piezoelectric ceramic vibrator (1) in described receiving system is connected with the signal input part of the signal conditioning circuit plate (12) in signal processing system.
2. contact shelf depreciation sonac according to claim 1, it is characterized in that the inner side of the oscillator film (2) in described receiving system is provided with groove, outside is provided with the convex edge of locating with Metal shielding shell (13).
3. contact shelf depreciation sonac according to claim 1 and 2, is characterized in that being provided with insulating mat two (5) between oscillator film (2) in described receiving system and oscillator support ring (8).
4. contact shelf depreciation sonac according to claim 1, is characterized in that the middle part of the piezoelectric ceramic vibrator (1) in described receiving system is provided with piezoelectric ceramic vibrator set collar (9).
5. contact shelf depreciation sonac according to claim 1, is characterized in that the signal output part of the signal conditioning circuit plate (12) in described signal processing system is by delivery outlet (11) and Partial Discharge Detection equipment connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521060470.3U CN205192612U (en) | 2015-12-18 | 2015-12-18 | Contact partial discharge ultrasonic sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521060470.3U CN205192612U (en) | 2015-12-18 | 2015-12-18 | Contact partial discharge ultrasonic sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205192612U true CN205192612U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521060470.3U Active CN205192612U (en) | 2015-12-18 | 2015-12-18 | Contact partial discharge ultrasonic sensor |
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| CN (1) | CN205192612U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219444A (en) * | 2017-05-26 | 2017-09-29 | 广西电网有限责任公司电力科学研究院 | A kind of transformer suspended discharge analogue means |
| CN108982670A (en) * | 2018-08-23 | 2018-12-11 | 湖州市特种设备检测研究院 | A kind of electromagnetic ultrasonic probe of water pipe non-destructive testing |
| CN111239570A (en) * | 2020-03-19 | 2020-06-05 | 上海陆根智能传感技术有限公司 | Portable ultrasonic sensor |
| CN111830381A (en) * | 2020-08-28 | 2020-10-27 | 重庆大学 | Watchband-adjustable full-laminated cable partial discharge ultrasonic sensor and online monitoring method |
| CN114495476A (en) * | 2022-01-20 | 2022-05-13 | 北京有竹居网络技术有限公司 | Control device, control method thereof, electronic apparatus, and storage medium |
-
2015
- 2015-12-18 CN CN201521060470.3U patent/CN205192612U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219444A (en) * | 2017-05-26 | 2017-09-29 | 广西电网有限责任公司电力科学研究院 | A kind of transformer suspended discharge analogue means |
| CN107219444B (en) * | 2017-05-26 | 2020-07-10 | 广西电网有限责任公司电力科学研究院 | Transformer suspension discharge simulation device |
| CN108982670A (en) * | 2018-08-23 | 2018-12-11 | 湖州市特种设备检测研究院 | A kind of electromagnetic ultrasonic probe of water pipe non-destructive testing |
| CN108982670B (en) * | 2018-08-23 | 2021-05-11 | 湖州市特种设备检测研究院 | Electromagnetic ultrasonic probe for nondestructive detection of water pipe |
| CN111239570A (en) * | 2020-03-19 | 2020-06-05 | 上海陆根智能传感技术有限公司 | Portable ultrasonic sensor |
| CN111830381A (en) * | 2020-08-28 | 2020-10-27 | 重庆大学 | Watchband-adjustable full-laminated cable partial discharge ultrasonic sensor and online monitoring method |
| CN111830381B (en) * | 2020-08-28 | 2023-08-15 | 重庆大学 | Watchband-adjustable full-attached cable partial discharge ultrasonic sensor and online monitoring method |
| CN114495476A (en) * | 2022-01-20 | 2022-05-13 | 北京有竹居网络技术有限公司 | Control device, control method thereof, electronic apparatus, and storage medium |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |