CN202383240U - Combined type TEV (Transient Earth Voltage) sensor - Google Patents
Combined type TEV (Transient Earth Voltage) sensor Download PDFInfo
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- CN202383240U CN202383240U CN2011205463209U CN201120546320U CN202383240U CN 202383240 U CN202383240 U CN 202383240U CN 2011205463209 U CN2011205463209 U CN 2011205463209U CN 201120546320 U CN201120546320 U CN 201120546320U CN 202383240 U CN202383240 U CN 202383240U
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Abstract
The utility model relates to a combined type TEV (Transient Earth Voltage) sensor and belongs to the technical field of a power equipment detection instrument. The technical scheme is as follows: the combined type TEV sensor comprises a shielding shell (1), a shielding plate (2), an ultrasonic sensor circuit board, a TEV sensor circuit board, a shielding shell cover plate (3), a TEV capacity coupler (4), an ultrasonic vibrator, a bottom cover (5) and a shielding cavity (6), wherein the shielding shell is internally provided with the shielding cavity, the shielding shell cover plate and the bottom cover; the ultrasonic vibrator is arranged in the shielding cavity; the TEV capacity coupler is arranged in a space between the shielding shell cover plate and the bottom shell; and the inner part of the shielding shell is divided into upper and lower cavities through the shielding plate to respectively place the ultrasonic sensor circuit board and the TEV sensor circuit board. The combined type TEV sensor has the beneficial effects that an ultrasonic sensor and the TEV sensor are integrated, the synchronous detection of a sound signal and an electric signal can be realized by a plurality of the cavities shielding structures, and the sound signal and the electric signal are not mutually interfered.
Description
Technical field
The utility model relates to a kind of combined type TEV sensor, and simple and efficient measurement high-tension switch cabinet shelf depreciation belongs to power equipment detecting instrument technical field.
Background technology
Along with Chinese economic development, every profession and trade increases the demand of electric power greatly, and electricity has become various places economic development and the indispensable product of people's lives.For guaranteeing the stability and security of electric power supply, the safe operation of high-tension switch cabinet plays an important role, and the detection of its inside local discharge signal has been become the problem of present the supreme arrogance of a person with great power.Field apparatuss such as the switch cubicle of electric pressure such as 10kV, 35kV, switchboard, cable branch box are the important component parts of electrical network, and their built-in electrical insulation is multiple, and the reliability service of these equipment has determined the reliability and the quality of power supply of electrical network.Certainly exist the insulation degradation that forms under electricity, heat, chemistry and the unusual condition in insulation defect that electrical equipment produces and the long-time running in manufacturing, transportation, installation process, cause the decline of electric insulation intensity, even have an accident.Shelf depreciation in the switch cubicle is divided into two kinds: surface-discharge and internal discharge.Background technology can be used sonac to two kinds of sensors of the general employing of switch cubicle Partial Discharge Detection for surface-discharge, can use the TEV sensor for internal discharge.But use that a kind of sensor all can not comprehensively understand switch cubicle shelf depreciation situation separately; And use two kinds of sensors not only to increase the man power and material simultaneously; But also can not guarantee precision, so press for ultrasonic signal and TEV signal that a kind of sensor can detect shelf depreciation simultaneously.
The utility model content
The purpose of the utility model provides a kind of combined type TEV sensor; Integrated sonac and TEV sensor; Rely on the structure of a plurality of cavity shieldings simultaneously; Can realize synchronous detection to acoustical signal and electric signal, and acoustical signal and not mutual interference mutually of electric signal, the problems referred to above that background technology exists solved.
The technical scheme of the utility model is: a kind of combined type TEV sensor; Comprise screening can, barricade, sonac circuit board, TEV sensor circuit board, screening can cover plate, TEV capacity coupler, ultrasonic vibrator, bottom and shielding cavity; Shielding cavity, screening can cover plate and bottom are set in the screening can; Ultrasonic vibrator is arranged in the shielding cavity, and the TEV capacity coupler is arranged in the space between screening can cover plate and the bottom; Screening can inside is divided into two cavitys up and down by barricade; Place sonac circuit board and TEV sensor circuit board respectively; Thereby realized the Application of composite of two kinds of sensors, can reduce the interference between electric signal and the acoustical signal, also can shield external disturbance simultaneously.
Bottom is the Teflon material of high-k, and the TEV capacity coupler is the flat capacitor coupling mechanism; When sensor was positioned over tested article metal surface, TEV capacity coupler and tested article metal surface were that medium forms capacitive coupling with the bottom, but the pulse signal of momentary current over the ground that the inner shelf depreciation of receiving key cabinet produces at cabinet.
Ultrasonic vibrator is positioned at shielding cavity, can shield external disturbance; Ultrasonic vibrator passes bottom, and the top plan of ultrasonic vibrator is equal with the top plan of bottom, when sensor touches the high-tension apparatus tank wall, can receive ultrasonic signal.Four pin places of bottom are provided with a round recessed respectively, place permanent magnet, can be adsorbed on the switch cubicle housing, and are easy to use.This sensor also can be applicable on other the high-tension apparatus that metal shell is arranged.
The beneficial effect of the utility model is: integrated sonac and TEV sensor; Rely on the structure of a plurality of cavity shieldings simultaneously, can realize synchronous detection acoustical signal and electric signal, and acoustical signal and not mutual interference mutually of electric signal; Circuit board is built in the shielding case, and antijamming capability is strong; Sensor base is embedded with magnet, can be adsorbed on the switch cubicle housing easy to use.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Among the figure: screening can 1, barricade 2, screening can cover plate 3, TEV capacity coupler 4, bottom 5, shielding cavity 6.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further through embodiment.
A kind of combined type TEV sensor; Comprise screening can (1), barricade (2), sonac circuit board, TEV sensor circuit board, screening can cover plate (3), TEV capacity coupler (4), ultrasonic vibrator, bottom (5) and shielding cavity (6); Shielding cavity, screening can cover plate and bottom are set in the screening can; Ultrasonic vibrator is arranged in the shielding cavity, and the TEV capacity coupler is arranged in the space between screening can cover plate and the bottom; Screening can inside is divided into two cavitys up and down by barricade; Place sonac circuit board and TEV sensor circuit board respectively; Thereby realized the Application of composite of two kinds of sensors, can reduce the interference between electric signal and the acoustical signal, also can shield external disturbance simultaneously.
Claims (3)
1. combined type TEV sensor; It is characterized in that: comprise screening can (1), barricade (2), sonac circuit board, TEV sensor circuit board, screening can cover plate (3), TEV capacity coupler (4), ultrasonic vibrator, bottom (5) and shielding cavity (6); Shielding cavity, screening can cover plate and bottom are set in the screening can; Ultrasonic vibrator is arranged in the shielding cavity, and the TEV capacity coupler is arranged in the space between screening can cover plate and the bottom; Screening can inside is divided into two cavitys up and down by barricade, places sonac circuit board and TEV sensor circuit board respectively.
2. a kind of combined type TEV sensor according to claim 1 it is characterized in that ultrasonic vibrator passes bottom, and the top plan of ultrasonic vibrator is equal with the top plan of bottom.
3. according to claim 1 or 2 said a kind of combined type TEV sensors, it is characterized in that four pin places of bottom are provided with a round recessed respectively, place permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205463209U CN202383240U (en) | 2011-12-23 | 2011-12-23 | Combined type TEV (Transient Earth Voltage) sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205463209U CN202383240U (en) | 2011-12-23 | 2011-12-23 | Combined type TEV (Transient Earth Voltage) sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202383240U true CN202383240U (en) | 2012-08-15 |
Family
ID=46631733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205463209U Expired - Fee Related CN202383240U (en) | 2011-12-23 | 2011-12-23 | Combined type TEV (Transient Earth Voltage) sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202383240U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928745A (en) * | 2012-10-08 | 2013-02-13 | 华北电力大学 | Wide-band gain-adjustable medium inductive sensor for detecting partial discharge of switch cabinet |
| CN103217633A (en) * | 2013-03-28 | 2013-07-24 | 国家电网公司 | Sensor for detecting local discharge of high-voltage switch cabinet |
| CN107525958A (en) * | 2017-07-05 | 2017-12-29 | 中国电力科学研究院 | A kind of transient state device and method that induced voltage measures over the ground being used for power equipment |
| CN113702685A (en) * | 2021-08-31 | 2021-11-26 | 西安交通大学 | Piezoelectric type ultrasonic-transient earth voltage composite sensor and measuring device |
-
2011
- 2011-12-23 CN CN2011205463209U patent/CN202383240U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928745A (en) * | 2012-10-08 | 2013-02-13 | 华北电力大学 | Wide-band gain-adjustable medium inductive sensor for detecting partial discharge of switch cabinet |
| CN103217633A (en) * | 2013-03-28 | 2013-07-24 | 国家电网公司 | Sensor for detecting local discharge of high-voltage switch cabinet |
| CN107525958A (en) * | 2017-07-05 | 2017-12-29 | 中国电力科学研究院 | A kind of transient state device and method that induced voltage measures over the ground being used for power equipment |
| CN113702685A (en) * | 2021-08-31 | 2021-11-26 | 西安交通大学 | Piezoelectric type ultrasonic-transient earth voltage composite sensor and measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20171223 |