CN204462318U - For the built-in sensor that GIS partial discharge detects - Google Patents
For the built-in sensor that GIS partial discharge detects Download PDFInfo
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- CN204462318U CN204462318U CN201520184765.5U CN201520184765U CN204462318U CN 204462318 U CN204462318 U CN 204462318U CN 201520184765 U CN201520184765 U CN 201520184765U CN 204462318 U CN204462318 U CN 204462318U
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- induction electrode
- cover plate
- cylindrical shell
- shell cover
- insulcrete
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Abstract
The utility model relates to a kind of built-in sensor detected for GIS partial discharge, comprises cylindrical shell cover plate, induction electrode, is isolated between the two by insulcrete, be fixed on described cylindrical shell cover plate by metal bolts by induction electrode; Cable hole is offered in the middle of described cylindrical shell cover plate; The electromagnetic signal transmission that induction electrode is responded to gone out by cable, described insulcrete is made up of epoxy resin; Described induction electrode waters and is loaded on described insulcrete inside, integral structure.The utility model install simple, defect rate is low, reliability is high, line-frequency induction voltage on bus can be prevented the impact of electrode, the detection sensitivity that reduces gas leakage, improve sensor.
Description
Technical field
The utility model belongs to electric power checkout equipment field, is specifically related to the built-in sensor detected for GIS partial discharge.
Background technology
The superfrequency electromagnetic wave produced when mainly being discharged by the induction electrode local being arranged on GIS device inside for GIS device inside detection method for local discharge at present judges whether there occurs the size of shelf depreciation and discharge capacity, and structure used mostly is shown in Fig. 1; Utilize metal bolts 6 to be fixed on cylindrical shell cover plate 1 by induction electrode 2, carry out insulation with insulcrete 3 between induction electrode 2 and cylindrical shell cover plate 1 and isolate, carry out insulation with insulating mat 7 between metal bolts 6 and induction electrode 2 and isolate; In order to prevent GIS internal high-pressure gas from being let out by cable hole 9, between cylindrical shell cover plate 1 and insulcrete 3, installing an O-ring seal 4 additional, between induction electrode 2 and insulcrete 3, having installed an O-ring seal 5 additional; The electromagnetic wave signal that induction electrode 2 is responded to is transferred out by cable 8.
Adopt this mode of Fig. 1, induction electrode 2 is outside exposed, and line-frequency induction voltage on bus is had an impact to induction electrode; Need employing two O-ring seals to seal, and O-ring seal is more, gas leakage point is also more; Carry out insulation with insulating mat 7 between metal bolts 6 and induction electrode 2 to isolate, this mode makes the distance between them very near, is easily that the signal on induction electrode 2 is short-circuited to ground by metal bolts 6, thus reduces the sensitivity detected.
Utility model content
Goal of the invention of the present utility model is: for overcome the above problems provide a kind of install simple, defect rate is low, reliability is high, line-frequency induction voltage on bus can be prevented the impact of electrode, the built-in sensor detected for GIS partial discharge that reduces gas leakage, improve the detection sensitivity of sensor.
The technical scheme that the utility model adopts is such:
For the built-in sensor that GIS partial discharge detects, comprise cylindrical shell cover plate, induction electrode, isolated by insulcrete between the two, by metal bolts, induction electrode is fixed on described cylindrical shell cover plate; Cable hole is offered in the middle of described cylindrical shell cover plate; The electromagnetic signal transmission that induction electrode is responded to gone out by cable, described insulcrete is made up of epoxy resin; Described induction electrode waters and is loaded on described insulcrete inside, integral structure.
Further, between described cylindrical shell cover plate and described insulcrete, be provided with annular seal ring, make it around described cable hole.
Further, directly induction electrode is fixed on described cylindrical shell cover plate by described metal bolts.
In sum, owing to adopting technique scheme, the beneficial effects of the utility model are:
1. utilize epoxy resin to be encapsulated by induction electrode, to prevent on bus line-frequency induction voltage on the impact of electrode;
2. only need an O-ring seal and salable between insulcrete and cylindrical shell cover plate, decrease gas leakage point;
3. carry out insulation isolation by epoxy resin between metal bolts and induction electrode, avoid metal bolts and induction electrode apart from too near problem, the detection sensitivity of sensor can be improved;
4. the structure that this insulcrete is integrated with induction electrode, install simple, defect rate is low, and reliability is high.
Accompanying drawing explanation
Fig. 1 is the structural representation for the built-in sensor of GIS partial discharge detection in known technology.
Fig. 2 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 2, for the built-in sensor that GIS partial discharge detects, comprise cylindrical shell cover plate 1, induction electrode 2, isolated by insulcrete 3 between the two, described insulcrete 3 is made up of epoxy resin, and described induction electrode 2 waters and is loaded on described insulcrete 3 inside, integral structure, install simple, defect rate is low, and reliability is high; Directly induction electrode 2 being fixed on described cylindrical shell cover plate 1 by metal bolts 5, without the need to adopting insulating mat, improving the detection sensitivity of sensor; Cable hole 6 is offered in the middle of described cylindrical shell cover plate 1; Between described cylindrical shell cover plate 1 and described insulcrete 3, be provided with annular seal ring 4, make it around described cable hole 6, decrease the use of O-ring seal 4, decrease gas leakage point; By cable 7, the electromagnetic signal transmission that induction electrode 2 is responded to is gone out.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1., for the built-in sensor that GIS partial discharge detects, comprise cylindrical shell cover plate, induction electrode, isolated by insulcrete between the two, by metal bolts, induction electrode is fixed on described cylindrical shell cover plate; Cable hole is offered in the middle of described cylindrical shell cover plate; By cable, the electromagnetic signal transmission that induction electrode is responded to is gone out, it is characterized in that: described insulcrete is made up of epoxy resin; Described induction electrode waters and is loaded on described insulcrete inside, integral structure.
2. the built-in sensor detected for GIS partial discharge according to claim 1, is characterized in that: between described cylindrical shell cover plate and described insulcrete, be provided with annular seal ring, makes it around described cable hole.
3. the built-in sensor detected for GIS partial discharge according to claim 1, be is characterized in that: be directly fixed on by induction electrode on described cylindrical shell cover plate by described metal bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184765.5U CN204462318U (en) | 2015-03-27 | 2015-03-27 | For the built-in sensor that GIS partial discharge detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184765.5U CN204462318U (en) | 2015-03-27 | 2015-03-27 | For the built-in sensor that GIS partial discharge detects |
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| Publication Number | Publication Date |
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| CN204462318U true CN204462318U (en) | 2015-07-08 |
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| CN201520184765.5U Active CN204462318U (en) | 2015-03-27 | 2015-03-27 | For the built-in sensor that GIS partial discharge detects |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676087A (en) * | 2016-02-02 | 2016-06-15 | 国家电网公司 | Sensing system for detecting ultrahigh-frequency partial discharging of GIS pouring hole |
| CN105759188A (en) * | 2016-04-20 | 2016-07-13 | 国网浙江省电力公司电力科学研究院 | UHF sensor for GIS partial discharge detection |
| CN107505552A (en) * | 2017-10-16 | 2017-12-22 | 云南电网有限责任公司电力科学研究院 | The lower shelf depreciation high-frequency signal extraction element of steep-front impact and measuring system |
| CN108919076A (en) * | 2018-08-06 | 2018-11-30 | 广东电网有限责任公司 | A kind of bipolar implanted cable connector partial discharge sensor |
-
2015
- 2015-03-27 CN CN201520184765.5U patent/CN204462318U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676087A (en) * | 2016-02-02 | 2016-06-15 | 国家电网公司 | Sensing system for detecting ultrahigh-frequency partial discharging of GIS pouring hole |
| CN105759188A (en) * | 2016-04-20 | 2016-07-13 | 国网浙江省电力公司电力科学研究院 | UHF sensor for GIS partial discharge detection |
| CN107505552A (en) * | 2017-10-16 | 2017-12-22 | 云南电网有限责任公司电力科学研究院 | The lower shelf depreciation high-frequency signal extraction element of steep-front impact and measuring system |
| CN108919076A (en) * | 2018-08-06 | 2018-11-30 | 广东电网有限责任公司 | A kind of bipolar implanted cable connector partial discharge sensor |
| CN108919076B (en) * | 2018-08-06 | 2024-01-23 | 广东电网有限责任公司 | Bipolar implantable cable joint partial discharge sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |