CN202196659U - Electronic type current transformer and its outer screen shield - Google Patents
Electronic type current transformer and its outer screen shield Download PDFInfo
- Publication number
- CN202196659U CN202196659U CN2011202531859U CN201120253185U CN202196659U CN 202196659 U CN202196659 U CN 202196659U CN 2011202531859 U CN2011202531859 U CN 2011202531859U CN 201120253185 U CN201120253185 U CN 201120253185U CN 202196659 U CN202196659 U CN 202196659U
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- external shield
- edge
- current mutual
- electronic current
- mutual inductor
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Abstract
The utility model relates to an outer screen shield of an electronic type current transformer. The outer screen shield is mainly formed by splicing inner, outer tubes. One end of the outer screen shield is provided with an annular cover plate used for closing the space between the inner, outer tubes and forming a closed annular cavity on one end provided with a coil. A through hole through which a conductor passes is arranged on the wall of the outer tube and the edge of the outer tube on the non-closed end of the outer screen shield is higher than the edge of the inner tube. The utility model also related to the electronic type current transformer with the outer screen shield. The structure of the outer screen shield is simple and when the outer screen shield is mounted, it is only necessary to fix the outer screen shield on the inner screen tube thus the outer screen shield is very conveniently mounted; simultaneously the screen shield is cooperated with the inner screen tube, the coil is enwrapped and the problem that a Rogowski coil is easily interfered by the outside is solved.
Description
Technical field
The utility model relates to electronic current mutual inductor and external shield thereof.
Background technology
The active electronic current transformer mainly uses Luo-coil and low-power coil as transducer, and the traditional arrangement mode is as shown in Figure 1; Luo-coil 5, low-power coil 4 suits at one end are provided with inner shield tube 3 outsides of baffle plate; Inner shield tube 3 has the cannelure 8 with inner shield tube 3 central lines away from an end outer peripheral face upper edge inner shield tube 3 axial distribution of baffle plate, elastic spring 9 is stuck in the cannelure 8, in order to fixing upper flange 7; Be provided with lower flange 6 at Luo-coil 5 away from a side of baffle plate; Evenly be provided with screwed hole on the upper flange 7, lower flange 6 correspondences are provided with groove, between Luo-coil 5 and the low-power coil 4, between low-power coil 4 and the baffle plate and be equipped with insulation cushion 1 between Luo-coil 5 and the lower flange 6; Holding out against screw 2 one ends is screwed in upper flange 7 screwed holes; The other end is placed in the groove of lower flange 6, holds out against screw 2 through adjusting, leans on squeezing action that coil is fixed.This mounting means needs a lot of parts, and installation is wasted time and energy, and because Luo-coil belongs to non magnetic skeleton, when small-signal, very easily receives external interference, influences certainty of measurement.
Summary of the invention
The purpose of the utility model is to provide a kind of electronic current mutual inductor external shield, and coil installs and fixes inconvenience in the prior art to solve, and Luo-coil is subject to the problem of external interference.
In order to address the above problem; A kind of electronic current mutual inductor external shield of the utility model; This external shield is mainly formed by inside and outside two cylindrical shell plug-in mountings; One end of this external shield is provided with and is used for sealing between the inside and outside cylindrical shell of this end is made between the said inside and outside cylindrical shell annular cover plate of the ring-shaped cavity that forms an end sealing that is used to install coil; Said urceolus body wall is provided with the through hole that supplies lead to pass, and at this external shield blind end not, said outer cylinder body edge exceeds said inner barrel edge.
Said outer cylinder body not closed end radially outwards turns down out one and is used on electronic current mutual inductor fixing turning edge.
Be evenly distributed to few two through holes that are used for the bearing pin secure fit on said the turning edge.
The said outer cylinder body not edge of blind end exceeds this end edge of inner barrel 3 ~ 10mm.
This use is novel also to provide a kind of electronic current mutual inductor that comprises above-mentioned external shield.
A kind of electronic current mutual inductor; Comprise baffled inner shield tube of an end and coil; This electronic current mutual inductor also comprises external shield, and said external shield is set on the said inner shield tube, and this external shield is mainly formed by inside and outside two cylindrical shell plug-in mountings; One end of this external shield is wholely set to be useful on sealing between the inside and outside cylindrical shell of this end is made between the said inside and outside cylindrical shell annular cover plate of the ring-shaped cavity that forms an end sealing that is used to install coil; Said urceolus body wall is provided with the through hole that supplies lead to pass, and at this external shield blind end not, said outer cylinder body edge exceeds said inner barrel edge; Also be provided with annular insulating mat in the external shield between said inner barrel and said baffle plate, the blind end of said outer cylinder body is connected on the said baffle plate.
Said outer cylinder body not closed end radially outwards turns down out one and is used on electronic current mutual inductor fixing turning edge.
Be evenly distributed to few two through holes that are used for the bearing pin secure fit on said the turning edge, said external shield is fixed on the said baffle plate through bearing pin.
The said outer cylinder body not edge of blind end exceeds this end edge of inner barrel 3 ~ 10mm.
In the cavity of said external shield, be provided with Luo-coil and low-power coil.
The utility model external shield is simple in structure, only needs during installation its fixing getting final product on the inner shield tube, and is very convenient, this radome cooperates with the inner shield tube coil is wrapped up simultaneously, solved the problem that Luo-coil is subject to external interference.
Description of drawings
Fig. 1 is the scheme of installation on the inner shield tube of Luo-coil and low-power coil in the prior art;
Fig. 2 is the axial section of radome among the utility model embodiment;
Fig. 3 is the axial section when in radome, placing low-power coil and Luo-coil among the utility model embodiment;
Fig. 4 is the mounting structure sketch map of radome on the inner shield tube in this use new embodiment.
Embodiment
Below in conjunction with accompanying drawing present embodiment is done detailed description:
Embodiment 1
A kind of electronic current mutual inductor external shield; Like Fig. 1, shown in 2; This external shield is mainly formed by inside and outside two cylindrical shells, 12,10 plug-in mountings; One end of this external shield be wholely set be useful on the inside and outside cylindrical shell 12 of this end, between 10 sealing make said inside and outside cylindrical shell 12, form the annular cover plate of the ring-shaped cavity of an end sealing that is used to install coil between 10; Said outer cylinder body 10 walls are provided with the through hole 11 that supplies lead to pass, and at this external shield blind end not, said outer cylinder body 10 edges exceed said inner barrel 12 edges; Said outer cylinder body not closed end radially outwards turns down out one and is used on electronic current mutual inductor fixing turning edge; Be evenly distributed to few two through holes 14 that are used for the bearing pin secure fit on said the turning edge, the said outer cylinder body not edge of blind end exceeds this end edge of inner barrel 3 ~ 10mm.
A kind of electronic current mutual inductor; Like Fig. 1,2, shown in 3; Comprise baffled inner shield tube 19 of an end and coil; This electronic current mutual inductor also comprises external shield 17, and said external shield 17 is set on the said inner shield tube 19, and this external shield 17 is mainly formed by inside and outside two cylindrical shells, 12,10 plug-in mountings; One end of this external shield 17 be wholely set be useful on the inside and outside cylindrical shell 12 of this end, between 10 sealing make said inside and outside cylindrical shell 12, form the annular cover plate of the ring-shaped cavity of an end sealing that is used to install coil between 10; Said outer cylinder body 10 walls are provided with the through hole 11 that supplies lead to pass, and at this external shield 17 blind end not, said outer cylinder body 10 edges exceed said inner barrel 12 edges; Also be provided with annular insulating mat 18 in the external shield 17 between said inner barrel 12 and said baffle plate, said outer cylinder body 10 not closed end radially outwards turns down out one and is used on electronic current mutual inductor fixing turning edge 13; Said turning edge is evenly distributed to few two through holes 14 that are used for the bearing pin secure fit on 13, and said external shield 17 is fixed on the said baffle plate through bearing pin 20; The said outer cylinder body 10 not edge of blind end exceeds inner barrel 12 these end edges 3 ~ 10mm; In the cavity of said external shield 17, be provided with Luo-coil 16 and low-power coil 15.
During installation; Earlier Luo-coil and low-power coil are packed in the cavity of external shield; And fix with epoxy resin or other insulation type material; Then with insulation cushion and radome integral assembling on the inner shield tube, or and with the trip bolt tightening bolt radome is fixed on the said baffle plate and gets final product.
In other embodiments, different with the foregoing description is, can not have through hole on the turning edge of described external shield, and directly this being turned edge to be welded on the baffle plate gets final product; In other embodiments, different with the foregoing description is, turns edge outside can also be not on described external shield, directly an end of external shield outer cylinder body is welded on the baffle plate to get final product; In other embodiments; Different with the foregoing description is; The said outer cylinder body not edge of blind end exceeds the height at this end edge of inner barrel, sets as the case may be, can be not in 3 ~ 10mm scope; In other embodiments, said annular cover plate can also be fixedly installed on the corresponding end of said inside and outside cylindrical shell with modes such as welding.
The utility model shielding case structure is simple, installs very conveniently, this radome cooperates with the inner shield tube coil is wrapped up simultaneously, has solved the problem that Luo-coil is subject to external interference.
Claims (9)
1. electronic current mutual inductor external shield; It is characterized in that: this external shield is mainly formed by inside and outside two cylindrical shell plug-in mountings; One end of this external shield is provided with and is used for sealing between the inside and outside cylindrical shell of this end is made between the said inside and outside cylindrical shell annular cover plate of the ring-shaped cavity that forms an end sealing that is used to install coil; Said urceolus body wall is provided with the through hole that supplies lead to pass, and at this external shield blind end not, said outer cylinder body edge exceeds said inner barrel edge.
2. a kind of electronic current mutual inductor external shield according to claim 1 is characterized in that: said outer cylinder body not closed end radially outwards turns down out one and is used on electronic current mutual inductor fixing turning edge.
3. a kind of electronic current mutual inductor external shield according to claim 2 is characterized in that: be evenly distributed to few two through holes that are used for the bearing pin secure fit on said the turning edge.
4. according to claim 1 or 2 or 3 described a kind of electronic current mutual inductor external shields, it is characterized in that: the said outer cylinder body not edge of blind end exceeds this end edge of inner barrel 3 ~ 10mm.
5. electronic current mutual inductor; Comprise baffled inner shield tube of an end and coil; It is characterized in that: this electronic current mutual inductor also comprises external shield, and said external shield is set on the said inner shield tube, and this external shield is mainly formed by inside and outside two cylindrical shell plug-in mountings; One end of this external shield is provided with and is used for sealing between the inside and outside cylindrical shell of this end is made between the said inside and outside cylindrical shell annular cover plate of the ring-shaped cavity that forms an end sealing that is used to install coil; Said urceolus body wall is provided with the through hole that supplies lead to pass, and at this external shield blind end not, said outer cylinder body edge exceeds said inner barrel edge; Also be provided with annular insulating mat in the external shield between said inner barrel and said baffle plate, the blind end of said outer cylinder body is connected on the said baffle plate.
6. a kind of electronic current mutual inductor according to claim 5 is characterized in that: said outer cylinder body not closed end radially outwards turns down out one and is used on electronic current mutual inductor fixing turning edge.
7. a kind of electronic current mutual inductor according to claim 6 is characterized in that: be evenly distributed to few two through holes that are used for the bearing pin secure fit on said the turning edge, said external shield is fixed on the said baffle plate through bearing pin.
8. according to claim 5 or 6 or 7 described a kind of electronic current mutual inductors, it is characterized in that: the said outer cylinder body not edge of blind end exceeds this end edge of inner barrel 3 ~ 10mm.
9. a kind of electronic current mutual inductor according to claim 8 is characterized in that: in the cavity of said external shield, be provided with Luo-coil and low-power coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202531859U CN202196659U (en) | 2011-07-18 | 2011-07-18 | Electronic type current transformer and its outer screen shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202531859U CN202196659U (en) | 2011-07-18 | 2011-07-18 | Electronic type current transformer and its outer screen shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202196659U true CN202196659U (en) | 2012-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202531859U Expired - Fee Related CN202196659U (en) | 2011-07-18 | 2011-07-18 | Electronic type current transformer and its outer screen shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202196659U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298202A (en) * | 2016-08-30 | 2017-01-04 | 合肥博雷电气有限公司 | A kind of chip anti-electromagnetic interference high frequency inductance element |
| CN107978441A (en) * | 2017-11-11 | 2018-05-01 | 河南森源电气股份有限公司 | GIS current transformers and its shielding cylinder |
-
2011
- 2011-07-18 CN CN2011202531859U patent/CN202196659U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298202A (en) * | 2016-08-30 | 2017-01-04 | 合肥博雷电气有限公司 | A kind of chip anti-electromagnetic interference high frequency inductance element |
| CN106298202B (en) * | 2016-08-30 | 2018-01-19 | 合肥博雷电气有限公司 | A kind of chip anti-electromagnetic interference high frequency inductance element |
| CN107978441A (en) * | 2017-11-11 | 2018-05-01 | 河南森源电气股份有限公司 | GIS current transformers and its shielding cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151225 Address after: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee after: Pinggao Group Co., Ltd. Patentee after: Henan high General Electric Co., Ltd. Address before: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee before: Pinggao Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20180718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |