CN203117367U - Ultrahigh-frequency sensor - Google Patents
Ultrahigh-frequency sensor Download PDFInfo
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- CN203117367U CN203117367U CN 201320105129 CN201320105129U CN203117367U CN 203117367 U CN203117367 U CN 203117367U CN 201320105129 CN201320105129 CN 201320105129 CN 201320105129 U CN201320105129 U CN 201320105129U CN 203117367 U CN203117367 U CN 203117367U
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- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
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- 238000013461 design Methods 0.000 description 2
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000008878 coupling Effects 0.000 description 1
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Abstract
The utility model relates to the technical filed of sensors used for detecting partial discharge electromagnetic wave signals, in particular to an ultrahigh-frequency sensor. The ultrahigh-frequency sensor comprises an outer shell, a base is arranged on the lower portion of the outer shell, a shielding case is arranged on the upper portion in the outer shell, and a circuit board is installed inside a cavity body of the shielding case. The circuit board is respectively connected with a signal input connector and a signal output connector, wherein the signal input connector and the signal output connector are arranged at two ends of the cavity body of the shielding case. A receiving antenna is arranged on the base and an extending rod is arranged on the side surface of the outer shell. The ultrahigh-frequency sensor can collect the electromagnetic wave signals generated by partial discharge. The signals are processed through a built-in high-precision amplifying and filter circuit. The ultrahigh-frequency sensor can effectively shield disturbance of external electromagnetic signals, effectively collects the high-frequency electromagnetic wave signals generated by the partial discharge, and is high in sensitivity, mature in technology, and low in cost.
Description
Technical field
The utility model relates to a kind of for the sensor technical field of surveying the shelf depreciation electromagnetic wave signal, especially relates to a kind of superfrequency sensor.
Background technology
Shelf depreciation is a kind of high-field effect in the insulating medium, long-term shelf depreciation effect meeting cause insulating medium aging, puncture, when serious even may cause the blast of large scale electrical power unit, bring great loss for the national people.Equipment is carried out the insulation defect that Partial Discharge Detection can find effectively that it is inner early stage, in order to take measures, avoid it to further develop, improve equipment dependability, guarantee equipment safety operation.The superfrequency method is the important method of power equipment Partial Discharge Detection, superfrequency sensor (UHF) receives the ultrahigh-frequency signal coupling that shelf depreciation produces, and the electromagnetic wave signal that the extraction shelf depreciation produces in uhf region, the external interference signal exists hardly, thereby detection system influenced by external interference little, can greatly improve reliability and the sensitivity of Partial Discharge Detection (particularly online detection).
Partial Discharge Detection uses the method for UHF sensor to propose at anti-electromagnetic interference problem just, and selects suitable frequency range to carry out the electric signal sensing of shelf depreciation in uhf band.This detection method technical characterstic is: it is higher to detect frequency range, can avoid the multiple electrical Interference such as corona, switching manipulation in the conventional measurement of partial discharge effectively; Detect bandwidth, so its detection sensitivity is very high.The characteristics that UHF detects make it have the incomparable advantage of additive method in the Partial Discharge Detection field, thereby have obtained development rapidly and application widely in recent years.Superfrequency sensor of the prior art is very high to acquisition precision and broadband requirement, and technology realizes the difficulty height, even and its cost of success of the test back is also higher.
Summary of the invention
The purpose of this utility model is to avoid the defective that the prior art acquisition precision is low, cost is high that a kind of superfrequency sensor is provided, thereby effectively solves the defective that exists in the prior art.
For achieving the above object, the technical scheme that the utility model is taked is: described a kind of superfrequency sensor, be characterized in comprising shell, outer casing underpart is provided with base, shielding case setting top in the enclosure, circuit board is installed in the shielding case inside cavity, and circuit board links to each other with signal output connector with the signal input connector at shielding case cavity two ends respectively, receiving antenna is arranged on the base, and extension rod is arranged on the shell side.
Described shell is the rectangle metal construction, and cover top portion and bottom are provided with pickup groove.Shell plays seal protection.
There is projection described shell side, and projection is provided with the hole that links to each other with the shielding case inside cavity, and the hole inwall is provided with the screw thread that links to each other with extension rod, and the outer casing bottom two ends are provided with extends ear, extends ear and is provided with for fixing hole.Can be fixed on the discharge examination place, convenient eminence or the high-tension apparatus shelf depreciation of detecting of the design of extension rod, assurance testing staff's safety.
Described base is the nonmetallic materials base, and base is fixedly mounted on the shell by the pickup groove of outer casing bottom.
Described base bottom is arcuate structure, the convenient placement.
Described shielding case is fixedly mounted on the shell by the pickup groove of cover top portion.Shielding case can be protected inner components and parts, can shield other signals simultaneously.
Described receiving antenna is fixed on the base by screw.
The beneficial effects of the utility model are: described a kind of superfrequency sensor, it is made up of shell, shielding case, base, signal input connector, signal output connector, circuit board, receiving antenna, extension rod, and this sensor can collect the electromagnetic wave signal that shelf depreciation produces.By built-in high precision amplification, filtering circuit signal is handled, this sensor can effectively shield extraneous electromagnetic signal and disturb, and effectively gathers the high frequency electromagnetic wave signal that shelf depreciation produces.It is highly sensitive, technology maturation, and cost is low.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model structural principle synoptic diagram.
Among the figure: 1. shell, 2. shielding case, 3. base, 4. signal input connector, 5. signal output connector, 6. circuit board, 7. receiving antenna, 8. extension rod.
Embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used for explaining the utility model, is not for limiting scope of the present utility model.
As shown in Figure 1, described a kind of superfrequency sensor, be characterized in comprising shell 1, shell 1 bottom is provided with base 3, shielding case 2 is arranged on the top in the shell 1, and circuit board 6 is installed in shielding case 2 inside cavity, and circuit board 6 links to each other with signal output connector 5 with the signal input connector 4 at shielding case 2 cavity two ends respectively, receiving antenna 7 is arranged on the base 3, and extension rod 8 is arranged on shell 1 side.。
Further, described shell 1 is the rectangle metal construction, and shell 1 top and bottom are provided with pickup groove.Shell 1 plays seal protection
Further, there is projection described shell 1 side, and projection is provided with the hole that links to each other with shielding case 2 inside cavity, and the hole inwall is provided with the screw thread that links to each other with extension rod 8, and two ends, shell 1 bottom are provided with extends ear, extends ear and is provided with for fixing hole.Can be fixed on the discharge examination place, convenient eminence or the high-tension apparatus shelf depreciation of detecting of the design of extension rod 8, assurance testing staff's safety.
Further, described base 3 is the nonmetallic materials base, and base 3 is fixedly mounted on the shell 1 by the pickup groove of shell 1 bottom.
Further, described base 3 bottoms are arcuate structure, the convenient placement.
Further, described shielding case 2 is fixedly mounted on the shell by the pickup groove at shell 1 top.Shielding case can be protected inner components and parts, can shield other signals simultaneously.
Further, described receiving antenna 7 is fixed on the base 3 by screw.
Described a kind of superfrequency sensor, it detects principle is to receive electromagnetic wave signal by signal receiving antenna, and receives head with the signal input circuit plate by signal, circuit board is handled signal through amplification demodulator, by the signal output connector output signal.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. superfrequency sensor, it is characterized in that comprising shell, outer casing underpart is provided with base, shielding case setting top in the enclosure, circuit board is installed in the shielding case inside cavity, circuit board links to each other with signal output connector with the signal input connector at shielding case cavity two ends respectively, and receiving antenna is arranged on the base, and extension rod is arranged on the shell side.
2. a kind of superfrequency sensor as claimed in claim 1, it is characterized in that: described shell is the rectangle metal construction, and cover top portion and bottom are provided with pickup groove.
3. a kind of superfrequency sensor as claimed in claim 1 or 2, it is characterized in that: there is projection described shell side, projection is provided with the hole that links to each other with the shielding case inside cavity, the hole inwall is provided with the screw thread that links to each other with extension rod, the outer casing bottom two ends are provided with extends ear, extends ear and is provided with for fixing hole.
4. a kind of superfrequency sensor as claimed in claim 1, it is characterized in that: described base is the nonmetallic materials base, and base is fixedly mounted on the shell by the pickup groove of outer casing bottom.
5. as claim 1 or 4 described a kind of superfrequency sensors, it is characterized in that: described base bottom is arcuate structure.
6. a kind of superfrequency sensor as claimed in claim 1, it is characterized in that: described shielding case is fixedly mounted on the shell by the pickup groove of cover top portion.
7. a kind of superfrequency sensor as claimed in claim 1, it is characterized in that: described receiving antenna is fixed on the base by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105129 CN203117367U (en) | 2013-03-08 | 2013-03-08 | Ultrahigh-frequency sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105129 CN203117367U (en) | 2013-03-08 | 2013-03-08 | Ultrahigh-frequency sensor |
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| Publication Number | Publication Date |
|---|---|
| CN203117367U true CN203117367U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320105129 Expired - Fee Related CN203117367U (en) | 2013-03-08 | 2013-03-08 | Ultrahigh-frequency sensor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529309A (en) * | 2013-10-21 | 2014-01-22 | 国家电网公司 | Ultrahigh-frequency sensor based on high-voltage shunt reactor |
| CN106483436A (en) * | 2016-11-30 | 2017-03-08 | 国网辽宁省电力有限公司电力科学研究院 | The external extra-high video sensor of multipurpose for power equipment Partial Discharge Detection |
| CN106872735A (en) * | 2017-03-10 | 2017-06-20 | 广州供电局有限公司 | Partial discharge system electromagnetic screen |
| CN110244203A (en) * | 2019-06-24 | 2019-09-17 | 深圳供电局有限公司 | Partial discharge detection system and partial discharge detection device |
| CN110596551A (en) * | 2019-09-27 | 2019-12-20 | 国网浙江省电力有限公司电力科学研究院 | Partial discharge detection sensor |
| CN111638431A (en) * | 2020-07-14 | 2020-09-08 | 国网山东省电力公司烟台供电公司 | A switchgear partial discharge detection and identification device based on ultrasonic detection method |
-
2013
- 2013-03-08 CN CN 201320105129 patent/CN203117367U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529309A (en) * | 2013-10-21 | 2014-01-22 | 国家电网公司 | Ultrahigh-frequency sensor based on high-voltage shunt reactor |
| CN103529309B (en) * | 2013-10-21 | 2015-09-16 | 国家电网公司 | Based on the superfrequency sensor of high-voltage shunt reactor |
| CN106483436A (en) * | 2016-11-30 | 2017-03-08 | 国网辽宁省电力有限公司电力科学研究院 | The external extra-high video sensor of multipurpose for power equipment Partial Discharge Detection |
| CN106872735A (en) * | 2017-03-10 | 2017-06-20 | 广州供电局有限公司 | Partial discharge system electromagnetic screen |
| CN110244203A (en) * | 2019-06-24 | 2019-09-17 | 深圳供电局有限公司 | Partial discharge detection system and partial discharge detection device |
| CN110244203B (en) * | 2019-06-24 | 2022-03-01 | 深圳供电局有限公司 | Partial discharge detection system and partial discharge detection device |
| CN110596551A (en) * | 2019-09-27 | 2019-12-20 | 国网浙江省电力有限公司电力科学研究院 | Partial discharge detection sensor |
| CN111638431A (en) * | 2020-07-14 | 2020-09-08 | 国网山东省电力公司烟台供电公司 | A switchgear partial discharge detection and identification device based on ultrasonic detection method |
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| Date | Code | Title | Description |
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| 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: 20130807 Termination date: 20160308 |