CN203825148U - Grading ring partial discharge sensor of disc-type insulator - Google Patents
Grading ring partial discharge sensor of disc-type insulator Download PDFInfo
- Publication number
- CN203825148U CN203825148U CN201420204007.0U CN201420204007U CN203825148U CN 203825148 U CN203825148 U CN 203825148U CN 201420204007 U CN201420204007 U CN 201420204007U CN 203825148 U CN203825148 U CN 203825148U
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- Prior art keywords
- grading ring
- metal flange
- disc
- disc insulator
- sensor
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Abstract
The utility model relates to a grading ring partial discharge sensor of a disc-type insulator. The sensor comprises an adaptor post, an N-type connector, a metal flange, a grading ring and the disc-type insulator. The metal flange and the disc-type insulator are connected as a whole. The metal flange is centrally provided with a shaft hole. The diameter of the shaft hole is larger than that of the adaptor post. The grading ring is mounted inside the disc-type insulator, and is provided with a threaded blind hole coaxial with the shaft hole. The N-type connector is fixed at the upper end of the metal flange. The adaptor post passes through the shaft hole at the center of the metal flange, and one end of the adaptor post is connected with the N-type connector, while the other end protrudes into the disc-type insulator to be connected with the grading ring. The adaptor post and the shaft hole are in coaxial structure. According to the utility model, the shaft hole of the metal flange and the adaptor post are in coaxial structure, so that the attenuation in signal transmission is reduced; and a multilayer sealing design including a protection shield and a sealing gasket is adopted, so that the insulation performance of the disc-type insulator is effectively prevented from being influenced by external environment.
Description
Technical field
The utility model relates to a kind of superfrequency office that is built in disc insulator and puts sensor.Belong to partial discharge monitoring technical field.
Background technology
At present, the office of SF6 gas insulation metal seal combined electrical apparatus (being called for short GIS) puts the monitoring offices that are placed on disc insulator outside or are built in GIS air chamber inside that adopt more and puts sensor.External sensor sensitivity is low, be subject to external environmental interference, and built-in transducer sensitivity is high, but can increase the risk of SF6 Leakage Gas, affects GIS and normally moves.
Disc insulator is the important composition parts of GIS, has the effect of insulation, isolation air chamber and supportive conductors, is extensively distributed on GIS body.In disc insulator, be cast with aluminum grading ring, grading ring can be regarded a kind of circular loop antenna as, can respond to the superfrequency electromagnetic wave that the inner shelf depreciation of GIS produces, and frequency is between 300MHz～3000MHz scope.Grading ring senses that electromagnetic wave signal puts in monitoring device by the concentric cable office of being transferred to, and can realize the object that GIS inside shelf depreciation is detected.
Application publication number is that the patent of invention of CN103399179A has been recorded " in disc insulator, all pressing shading ring ultra-high frequency signal ejector ", the disclosed technical scheme of this patent is because the shape of bolt mounting holes is stepped, aperture segmentation changes, therefore in this technology, signal transmission structure can cause the decay of ultrahigh-frequency signal, and this installs unshielded structure, extraneous dust, moisture content easily enter into disc insulator, easily the insulating property of GIS body are exerted an influence.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of disc insulator grading ring office to put sensor, can be realized effective monitoring of shelf depreciation and be reduced the operation risk of GIS by simple structure.
The technical scheme that the utility model addresses the above problem is as follows:
A sensor is put in disc insulator grading ring office, it is characterized in that:
It comprises connecting column, N connector, metal flange, grading ring and disc insulator, described metal flange and disc insulator are integrated connection, in the middle of described metal flange, there is axis hole, described shaft hole diameter is greater than the diameter of connecting column, in described disc insulator, grading ring is installed, grading ring has the tapped blind hole coaxial with axis hole.
Described N connector is fixedly connected on the upper end of metal flange, and described connecting column is through the axis hole in the middle of metal flange, and one end is connected with N connector, and the tapped blind hole that the other end penetrates grading ring is connected with grading ring, and connecting column and axis hole are coaxial configuration.
As preferred version, the joint portion of described axis hole and tapped blind hole is provided with O-ring seals.
As further improvement, be, the protective cover that is positioned at N connector outside is installed on described metal flange, the top of described protective cover has threaded hole, and metal plug is installed in described threaded hole.Described protective cover can stop the foreign material such as extraneous dust, moisture to enter in disc insulator.The replaceable one-tenth metal hose joint of metal plug on described protective cover, when authorities put sensor output signal and need access office put pick-up unit, cable can pass from protective cover top, and now metal plug is replaced with metal hose joint, can protect cable.
Further, between described protective cover and metal flange, be provided with sealing gasket.
As preferably, described protective cover is fixed on metal flange by screw.
Further again, between described N connector and metal flange, be provided with O-ring seal.
Compared with prior art, the beneficial effects of the utility model are:
1, in the utility model, the axis hole aperture in the middle of metal flange is only changing with the junction of grading ring tapped blind hole, and this sector hole footpath height is no more than 2mm, therefore can not exert an influence to the transmission of signal, and axis hole is coaxial with connecting column, guaranteed that superfrequency Partial discharge signal transmits required coaxial configuration, the decay while reducing signal transmission;
2, adopt the multi-layer sealed design of protective cover and packing washer, effectively prevent the impact of external environment on disc insulator insulating property;
3, by changing metal plug, be that metal hose joint can be realized the protection to cable easily;
Accompanying drawing explanation
Fig. 1 is the structural representation that sensor is put in the utility model disc insulator grading ring office.
Fig. 2 is the scheme of installation of the utility model protective cover and metal plug.
In above figure: 1, connecting column; 2, O-ring seal; 3, sealing gasket; 4, protective cover; 5, metal plug; 6, N connector; 7, metal flange; 7-1, axis hole; 8, grading ring; 8-1, tapped blind hole; 9, disc insulator; 10, screw; 11, O RunddichtringO.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail; described embodiment is the restriction to utility model protection scope not; obviously; those of ordinary skills can obtain other embodiment under the prerequisite of not making creative work, and these all belong to protection domain of the present utility model.
As depicted in figs. 1 and 2, sensor is put in a kind of disc insulator grading ring office, it comprises connecting column 1, N connector 6, metal flange 7, grading ring 8 and disc insulator 9, described metal flange is that integral type is connected with disc insulator, in the middle of described metal flange, there is axis hole 7-1, described shaft hole diameter is greater than the diameter of connecting column, grading ring 8 is installed in described disc insulator, grading ring has the tapped blind hole 8-1 coaxial with axis hole, in order to ensure sealing, the joint portion of described axis hole and tapped blind hole is provided with O-ring seals 11.
Described N connector is fixedly connected on the upper end of metal flange, described connecting column is through the axis hole in the middle of metal flange, one end is connected with N connector, the tapped blind hole that the other end penetrates grading ring is connected with grading ring, connecting column is coaxial with axis hole, guaranteed that superfrequency Partial discharge signal transmits required coaxial configuration, the decay while reducing signal transmission;
The protective cover 4 that is positioned at N connector outside is installed on described metal flange, and described protective cover is preferably fixed on metal flange by screw 10.The top of described protective cover has threaded hole 4-1, and metal plug 5 is installed in described threaded hole.Between described protective cover and metal flange, be provided with sealing gasket 3.Described protective cover and sealing gasket can stop the foreign material such as extraneous dust, moisture to enter in disc insulator.The replaceable one-tenth metal hose joint of metal plug on described protective cover, when authorities put sensor output signal and need access office put pick-up unit, cable can pass from protective cover top, and now metal plug is replaced with metal hose joint, can protect cable.Between described N connector and metal flange, be provided with O-ring seal 2.
Claims (6)
1. a sensor is put in disc insulator grading ring office, it is characterized in that:
It comprises connecting column (1), N connector (6), metal flange (7), grading ring (8) and disc insulator (9),
Described metal flange and disc insulator are integrated connection, in the middle of described metal flange, have axis hole (7-1), described shaft hole diameter is greater than the diameter of connecting column, and grading ring (8) is installed in described disc insulator, grading ring has the tapped blind hole coaxial with axis hole (8-1)
Described N connector is fixedly connected on the upper end of metal flange, and described connecting column is through the axis hole in the middle of metal flange, and one end is connected with N connector, and the tapped blind hole that the other end penetrates grading ring is connected with grading ring, and connecting column and axis hole are coaxial configuration.
2. sensor is put in disc insulator grading ring according to claim 1 office, it is characterized in that:
The joint portion of described axis hole and tapped blind hole is provided with O-ring seals (11).
3. sensor is put in disc insulator grading ring according to claim 1 office, it is characterized in that:
The protective cover (4) that is positioned at N connector outside is installed on described metal flange, and the top of described protective cover has threaded hole (4-1), and metal plug (5) is installed in described threaded hole.
4. sensor is put in disc insulator grading ring according to claim 3 office, it is characterized in that:
Between described protective cover and metal flange, be provided with sealing gasket (3).
5. according to the disc insulator grading ring office described in claim 3 or 4, put sensor, it is characterized in that:
Described protective cover is fixed on metal flange by screw (10).
6. sensor is put in disc insulator grading ring according to claim 1 office, it is characterized in that:
Between described N connector and metal flange, be provided with O-ring seal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204007.0U CN203825148U (en) | 2014-04-24 | 2014-04-24 | Grading ring partial discharge sensor of disc-type insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204007.0U CN203825148U (en) | 2014-04-24 | 2014-04-24 | Grading ring partial discharge sensor of disc-type insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203825148U true CN203825148U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420204007.0U Expired - Fee Related CN203825148U (en) | 2014-04-24 | 2014-04-24 | Grading ring partial discharge sensor of disc-type insulator |
Country Status (1)
| Country | Link |
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| CN (1) | CN203825148U (en) |
Cited By (6)
| 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 |
| CN107588866A (en) * | 2017-10-18 | 2018-01-16 | 广东电网有限责任公司电力科学研究院 | A kind of GIS disc insulators system for detecting temperature |
| CN107807312A (en) * | 2017-09-26 | 2018-03-16 | 杭州西湖电子研究所 | A kind of superfrequency detection method for local discharge |
| CN107807316A (en) * | 2017-11-27 | 2018-03-16 | 清华四川能源互联网研究院 | Local discharge detection device and system |
| 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 |
| CN108318788A (en) * | 2018-02-01 | 2018-07-24 | 清华大学 | A kind of GIS disc insulators local discharge detection device |
-
2014
- 2014-04-24 CN CN201420204007.0U patent/CN203825148U/en not_active Expired - Fee Related
Cited By (8)
| 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 |
| CN107807312A (en) * | 2017-09-26 | 2018-03-16 | 杭州西湖电子研究所 | A kind of superfrequency detection method for local discharge |
| CN107807312B (en) * | 2017-09-26 | 2020-01-14 | 杭州西湖电子研究所 | Ultrahigh frequency partial discharge detection method |
| 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 |
| CN107588866A (en) * | 2017-10-18 | 2018-01-16 | 广东电网有限责任公司电力科学研究院 | A kind of GIS disc insulators system for detecting temperature |
| CN107588866B (en) * | 2017-10-18 | 2023-05-23 | 广东电网有限责任公司电力科学研究院 | GIS basin-type insulator temperature detection system |
| CN107807316A (en) * | 2017-11-27 | 2018-03-16 | 清华四川能源互联网研究院 | Local discharge detection device and system |
| CN108318788A (en) * | 2018-02-01 | 2018-07-24 | 清华大学 | A kind of GIS disc insulators local discharge detection 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 |
Granted publication date: 20140910 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |