CN205333783U - Partial discharge detection device - Google Patents
Partial discharge detection device Download PDFInfo
- Publication number
- CN205333783U CN205333783U CN201521067937.7U CN201521067937U CN205333783U CN 205333783 U CN205333783 U CN 205333783U CN 201521067937 U CN201521067937 U CN 201521067937U CN 205333783 U CN205333783 U CN 205333783U
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- CN
- China
- Prior art keywords
- metallic shield
- sensor probe
- cover body
- detection device
- discharge detection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 239000000523 sample Substances 0.000 claims abstract description 47
- 239000012212 insulator Substances 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 238000010079 rubber tapping Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Testing Relating To Insulation (AREA)
Abstract
The utility model discloses a partial discharge detection device, including sensor probe and metallic shield cover, set up the metallic shield ring on the insulator, the metallic shield cover is installed on the metallic shield ring, set up coaxial counter bore on metallic shield ring and the insulator, in the counter bore of sensor probe bottom entry metallic shield ring and insulator, sensor probe sets up insulating the pad in inserting the upper end metallic shield cover between sensor probe and the metallic shield cover, and sensor probe and metallic shield ring sum metallic shield cover are kept apart to insulating the pad, and one end passing signal line was connected with backstage sensor probe 2 during sensor probe inserted the metallic shield cover. The utility model discloses GIS partial discharge detector sensitivity is higher, and shielding property is good, simple to operate, and easily overhaul.
Description
Technical field
This utility model relates to GIS partial discharge detection technique field, refers in particular to a kind of local discharge detection device。
Background technology
GIS(gas-insulated switchgear) occur the reason of insulation fault to be in that internal electric field distorts, with partial discharge phenomenon, produce pulse current, current impulse rise time and persistent period are only nanosecond nS level, this current impulse inspires frequency electromagnetic waves, and this electromagnetic wave can be revealed from the disk insulator on GIS。Adopt uhf sensor can measure the electromagnetic wave at insulator gap place, then can analyze the order of severity of shelf depreciation according to the signal intensity received。
In prior art, applying to on-the-spot GIS partial discharge detecting device mainly has built-in and external two kinds。Wherein, built-in sensor needs to install when equipment produces, and it is more to install quantity, and testing cost is bigger；During maintenance, it is necessary to opened by equipment, maintenance cost is higher。
External sensor is fixed on GIS air chamber exterior insulator, and the disc insulator applying to external detecting device has two kinds of structures: one be disc insulator without metallic shield ring, for full open type；Full open type disc insulator is because not shielding, and interference free performance is poor, it is difficult to obtain higher detection sensitivity。Another kind is disc insulator band metallic shield ring, shading ring band elongated hole-shape tapping hole, as shown in Figure 1, disc insulator excircle metallic shield ring, metallic shield ring arranges tapping hole 10, disc insulator is formed by tapping hole 10 irrigates insulant, electromagnetic wave is revealed from this tapping hole 10, sensor 20 is arranged on metallic shield ring by band 30, the probe of sensor 20 is just to tapping hole 10, the internal local discharge signal of GIS is delivered to sensor 20 by insulator tapping hole 10, sensor 20 be uploaded to backstage signal processing system and receive。Sensor is vulnerable to the impact of tapping hole size when receiving different local discharge signal, affect sensitivity。
Utility model content
The purpose of this utility model is in that to provide a kind of local discharge detection device, and its detection sensitivity is higher, and shielding properties is excellent, easy for installation, and is prone to maintenance。
For reaching above-mentioned purpose, solution of the present utility model is:
A kind of local discharge detection device, including sensor probe and metallic shield；Arranging metallic shield ring on insulator, metallic shield is arranged on metallic shield ring；Metallic shield ring and insulator arrange coaxial counterbore, sensor probe lower end is inserted in the counterbore of metallic shield ring and insulator, sensor probe upper end is inserted in metallic shield, felt pad is set between sensor probe and metallic shield, felt pad isolation sensor probe and metallic shield ring and metallic shield, sensor probe is inserted one end in metallic shield and is connected with backstage signal processing system by holding wire。
Further, metallic shield is made up of cover body and metal cover board, and cover body is arranged on metallic shield ring, cover body arranges the containing cavity of upper end open, installing hole is formed on the bottom of containing cavity, and sensor probe upper end is inserted in this installing hole, and metal cover board is arranged on the containing cavity opening part of cover body。
Further, sealing ring is set between cover body and metal cover board。
Further, the containing cavity sidewall of cover body forms perforation, and the outside corresponding punch position of containing cavity sidewall installs cable interface, and holding wire is connected through perforation with cable interface。
Further, between the containing cavity sidewall outside of cable interface and cover body, sealing ring is set。
Further, inserted link is formed at cover body bottom, and inserted link arranges installing hole, and inserted link inserts in the counterbore of metallic shield ring。
Further, between cover body inserted link outside and the counterbore of metallic shield ring, sealing ring is set。
Further, between cover body and metallic shield ring, sealing ring is set。
Further, insulator is disc insulator。
Further, counterbore is cylindrical hole, and sensor probe is correspondingly arranged as cylindric。
After adopting such scheme, this utility model sensor probe lower end is inserted in the counterbore of metallic shield ring and insulator so that the weak of signal, closer to signal source, is reduced in sensor probe lower end, and detection sensitivity is higher。Meanwhile, sensor probe upper end is inserted in metallic shield, reduces the external signal interference to sensor probe further, and shielding properties is excellent, further such that detection sensitivity is higher。This utility model is arranged on metallic shield ring, easy for installation, and is prone to maintenance。
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art；
Fig. 2 is structural representation of the present utility model；
Fig. 3 is the structural representation of this utility model insulator and metallic shield ring；
Fig. 4 is the scheme of installation of this utility model sensor probe；
Fig. 5 is the structural representation of this utility model sensor probe。
Label declaration
Tapping hole 10 sensor 20
Band 30
Sensor probe 1 metallic shield 2
Cover body 21 containing cavity 211
Installing hole 212 bores a hole 213
Inserted link 214 metal cover board 22
Insulator 3 metallic shield ring 4
Felt pad 5 holding wire 6
Cable interface 7。
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, this utility model is described in detail。
Consulting described in Fig. 2 to Fig. 5, a kind of local discharge detection device that this utility model discloses, including sensor probe 1 and metallic shield 2。
Arranging metallic shield ring 4 on insulator 3, insulator 3 is generally disc insulator。Metallic shield 2 is arranged on metallic shield ring 4。Metallic shield ring 4 and insulator 3 arrange coaxial counterbore (41,31), as shown in Figure 3。
Sensor probe 1 lower end is inserted in the counterbore (41,31) of metallic shield ring 4 and insulator 3, and counterbore (41,31) is preferably cylindrical hole, and sensor probe 1 is correspondingly arranged as cylindric, conveniently installs and processing, it is possible to for other shapes。Sensor probe 1 upper end is inserted in metallic shield 2。
Felt pad 5 is set between sensor probe 1 and metallic shield 2, felt pad 5 isolation sensor probe 1 with metallic shield ring 4 and metallic shield 2。Sensor probe 1 is inserted one end in metallic shield 2 and is connected with backstage signal processing system (not shown) by holding wire 6。
In the present embodiment, metallic shield 2 is made up of cover body 21 and metal cover board 22, and cover body 21 is arranged on metallic shield ring 4, arranges sealing ring between cover body 21 and metallic shield ring 4。Cover body 21 arranges the containing cavity 211 of upper end open, and installing hole 212 is formed on the bottom of containing cavity 211, and sensor probe 1 upper end is inserted in this installing hole 212, and metal cover board 22 is arranged on containing cavity 211 opening part of cover body 21。Between cover body 21 and metal cover board 22, sealing ring is set。Generally it is threaded in sensor probe 1 upper end, by nut, spring washer and plain cushion securing member, sensor probe 1 upper end is arranged in cover body 21。Usual sensor probe 1 upper end is set to smaller, and sensor probe 1 lower end is set to larger in size。
Containing cavity 211 sidewall of cover body 21 forms perforation 213, and cable interface 7 is installed in outside corresponding perforation 213 position of containing cavity 211 sidewall, and holding wire 6 is connected through perforation 213 with cable interface 7, connects backstage signal processing system through cable interface 7。Between the containing cavity 211 sidewall outside of cable interface 7 and cover body 21, sealing ring is set。
Inserted link 214 is formed at cover body 21 bottom, and inserted link 214 arranges installing hole 212, and inserted link 213 inserts in the counterbore 41 of metallic shield ring 4。Between cover body 21 inserted link 214 outside and the counterbore 41 of metallic shield ring 4, sealing ring is set。
This utility model sensor probe 1 lower end is inserted in the counterbore (41,31) of metallic shield ring 4 and insulator 3, make sensor probe 1 lower end closer to signal source (electromagnetic wave that the internal shelf depreciation of GIS produces), reducing the weak of signal, detection sensitivity is higher。Meanwhile, sensor probe 1 upper end is inserted in metallic shield 2, reduces the external signal interference to sensor probe 1 further, and shielding properties is excellent, further such that detection sensitivity is higher。
The foregoing is only preferred embodiment of the present utility model, not the restriction to this case design, all equivalent variations done according to the design key of this case, each fall within the protection domain of this case。
Claims (10)
1. a local discharge detection device, it is characterised in that: include sensor probe and metallic shield；Arranging metallic shield ring on insulator, metallic shield is arranged on metallic shield ring；Metallic shield ring and insulator arrange coaxial counterbore, sensor probe lower end is inserted in the counterbore of metallic shield ring and insulator, sensor probe upper end is inserted in metallic shield, felt pad is set between sensor probe and metallic shield, felt pad isolation sensor probe and metallic shield ring and metallic shield, sensor probe is inserted one end in metallic shield and is connected with backstage signal processing system by holding wire。
2. a kind of local discharge detection device as claimed in claim 1, it is characterized in that: metallic shield is made up of cover body and metal cover board, cover body is arranged on metallic shield ring, cover body arranges the containing cavity of upper end open, installing hole is formed on the bottom of containing cavity, sensor probe upper end is inserted in this installing hole, and metal cover board is arranged on the containing cavity opening part of cover body。
3. a kind of local discharge detection device as claimed in claim 2, it is characterised in that: sealing ring is set between cover body and metal cover board。
4. a kind of local discharge detection device as claimed in claim 2, it is characterised in that: the containing cavity sidewall of cover body forms perforation, and the outside corresponding punch position of containing cavity sidewall installs cable interface, and holding wire is connected through perforation with cable interface。
5. a kind of local discharge detection device as claimed in claim 4, it is characterised in that: between the containing cavity sidewall outside of cable interface and cover body, sealing ring is set。
6. a kind of local discharge detection device as claimed in claim 2, it is characterised in that: inserted link is formed at cover body bottom, and inserted link arranges installing hole, and inserted link inserts in the counterbore of metallic shield ring。
7. a kind of local discharge detection device as claimed in claim 6, it is characterised in that: between cover body inserted link outside and the counterbore of metallic shield ring, sealing ring is set。
8. a kind of local discharge detection device as claimed in claim 2, it is characterised in that: between cover body and metallic shield ring, sealing ring is set。
9. a kind of local discharge detection device as claimed in claim 1, it is characterised in that: insulator is disc insulator。
10. a kind of local discharge detection device as claimed in claim 1, it is characterised in that: counterbore is cylindrical hole, and sensor probe is correspondingly arranged as cylindric。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521067937.7U CN205333783U (en) | 2015-12-21 | 2015-12-21 | Partial discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521067937.7U CN205333783U (en) | 2015-12-21 | 2015-12-21 | Partial discharge detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205333783U true CN205333783U (en) | 2016-06-22 |
Family
ID=56208300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521067937.7U Expired - Fee Related CN205333783U (en) | 2015-12-21 | 2015-12-21 | Partial discharge detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205333783U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467286A (en) * | 2015-12-21 | 2016-04-06 | 许继（厦门）智能电力设备股份有限公司 | Local discharge detection device |
| CN105976947A (en) * | 2016-08-01 | 2016-09-28 | 黑龙江省电力科学研究院 | Basin-type insulator with embedded probe and manufacturing method thereof |
| CN107907798A (en) * | 2017-10-13 | 2018-04-13 | 杭州格创新能源有限公司 | A kind of GIS shading rings extraction-type sensor |
| CN112712942A (en) * | 2020-12-14 | 2021-04-27 | 平高集团有限公司 | Insulator assembly and high-voltage switch equipment using same |
-
2015
- 2015-12-21 CN CN201521067937.7U patent/CN205333783U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467286A (en) * | 2015-12-21 | 2016-04-06 | 许继（厦门）智能电力设备股份有限公司 | Local discharge detection device |
| CN105976947A (en) * | 2016-08-01 | 2016-09-28 | 黑龙江省电力科学研究院 | Basin-type insulator with embedded probe and manufacturing method thereof |
| CN107907798A (en) * | 2017-10-13 | 2018-04-13 | 杭州格创新能源有限公司 | A kind of GIS shading rings extraction-type sensor |
| CN112712942A (en) * | 2020-12-14 | 2021-04-27 | 平高集团有限公司 | Insulator assembly and high-voltage switch equipment using same |
| CN112712942B (en) * | 2020-12-14 | 2022-07-05 | 平高集团有限公司 | Insulator assembly and high-voltage switch equipment using same |
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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: 20160622 Termination date: 20191221 |