CN204029597U - Open-close type zero sequence current mutual inductor - Google Patents

Open-close type zero sequence current mutual inductor Download PDF

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Publication number
CN204029597U
CN204029597U CN201420439636.1U CN201420439636U CN204029597U CN 204029597 U CN204029597 U CN 204029597U CN 201420439636 U CN201420439636 U CN 201420439636U CN 204029597 U CN204029597 U CN 204029597U
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CN
China
Prior art keywords
iron core
core winding
shell
mutual inductor
zero sequence
Prior art date
Application number
CN201420439636.1U
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Chinese (zh)
Inventor
钟方强
董勇
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杭州乾龙电器有限公司
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Priority to CN201420439636.1U priority Critical patent/CN204029597U/en
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Publication of CN204029597U publication Critical patent/CN204029597U/en

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Abstract

A kind of open-close type zero sequence current mutual inductor, comprising: the annular iron core winding of two fans, with two two shells that iron core winding is corresponding, described two shells utilize securing member to be interlocked; In described each shell, pass through fixture secured core winding, between described shell and iron core winding, there is redundant space along iron core winding plane, and the position between described two fan annular core winding outsides and shell has spring, when two shells are interlocked, utilize described spring to make two iron core windings fit tightly composition annular core winding, avoid the impact of processing technology error to cause two iron core windings not to be close to, thereby avoid magnetic flux generation loss.In the time that needs are changed or keep in repair, be the zero sequence current mutual inductor in detachable cable by two shells are triped, swift to operate easy.

Description

Open-close type zero sequence current mutual inductor
Technical field
The utility model relates to current transformer, relates in particular to a kind of zero sequence current mutual inductor that can folding.
Background technology
Zero sequence current mutual inductor, for electric power system, can produce zero sequence earth current and protective relaying device or signalling and be used in conjunction with, and realizes protection or monitoring.The zero sequence current mutual inductor of prior art is integral type instrument transformer, installs before zero sequence current mutual inductor need to or be installed a major loop at cabling and carries out, need be through described zero sequence current mutual inductor when cable laying or a major loop of installation.When cabling or install after a major loop completes, or while needing repairing, dismounting and installation zero sequence current mutual inductor, just cable or a major loop must be pulled down, then reinstall zero sequence current mutual inductor, cable or a major loop are reinstalled back, and this operation element amount is huge, and operating performance is quite numerous and diverse.
Utility model content
The problem that the utility model solves is to provide a kind of open-close type zero sequence current mutual inductor, simple in structure, and is easy for installation and maintenance.
For addressing the above problem, the utility model embodiment provides a kind of open-close type zero sequence current mutual inductor, comprising: two annular iron core windings of fan, with two two shells that iron core winding is corresponding, described two shells utilize securing member to be interlocked; In described each shell, pass through fixture secured core winding, between described shell and iron core winding, there is redundant space along iron core winding plane, and the position between described two fan annular core winding outsides and shell has spring, when two shells are interlocked, utilize described spring to make two iron core windings fit tightly composition annular core winding.
Optionally, described spring is flat spring, flat spring or stage clip.
Optionally, one end of described two shells is rotatably connected, and the other end utilizes securing member to be interlocked.
Optionally, the two ends of described two shells all utilize securing member to be interlocked.
Optionally, described two surfaces of contacting of the annular iron core windings of fan are plane, inclined-plane or serrated face.
Optionally, in the time that two shells are opened, gapped between described spring and iron core winding.
Optionally, between described iron core winding and shell, also there is shielding case.
Optionally, the consistent size of described fastener openings size and iron core winding, has gap between described fixture and shell.
Optionally, utilize two shell one end correspondences that securing member is interlocked to there is jut and depressed part, two shells are interlocked.
Optionally, each shell has at least one fixture near the position at shell two ends, utilizes the position between cross section upper core winding and the shell at described fixture fixed housing two ends.
Compared with prior art, the technical program has the following advantages:
Because two iron core windings of the utility model embodiment are fan annular, by being interlocked, two shells can be close to composition annular core winding, when after cable laying or a major loop installation, or while needing repairing, be the zero sequence current mutual inductor in detachable cable by two shells are triped, no longer need cable or a major loop to disassemble, easy and simple to handle, simplify working process; Simultaneously because the position between described two fan annular core winding outsides and shell has spring, in the time that two shells are interlocked, utilize described spring to make two iron core windings be close to composition annular core winding, avoid the impact of processing technology error to cause two iron core windings not to be close to, thereby make magnetic flux generation loss.
Brief description of the drawings
Fig. 1 is the disassemblying structure schematic diagram of the open-close type zero sequence current mutual inductor of the utility model the first embodiment;
Fig. 2 is the overall appearance structural representation of the open-close type zero sequence current mutual inductor of the utility model the first embodiment;
Fig. 3 be the utility model the first embodiment open-close type zero sequence current mutual inductor fasten time overall appearance structural representation;
Fig. 4 is the disassemblying structure schematic diagram of the open-close type zero sequence current mutual inductor of the utility model the second embodiment.
Embodiment
Below in conjunction with accompanying drawing, by specific embodiment, the technical solution of the utility model is carried out to clear, complete description.
Please refer to Fig. 1~Fig. 4, Fig. 1 is the disassemblying structure schematic diagram of the open-close type zero sequence current mutual inductor of the utility model the first embodiment, Fig. 2 is the overall appearance structural representation of the open-close type zero sequence current mutual inductor of the utility model the first embodiment, Fig. 3 be the utility model the first embodiment open-close type zero sequence current mutual inductor fasten time overall appearance structural representation, described open-close type zero sequence current mutual inductor comprises: two annular iron core windings 10 of fan, with two two shells 20 that iron core winding 10 is corresponding, described two shells 20 utilize securing member 25 to be interlocked; In described each shell 20, pass through fixture 30 secured core windings 10, between described shell 10 and iron core winding 10, there is redundant space along iron core winding 10 planes, and described two positions of fanning between annular iron core winding 10 outsides and shell 20 have spring 40, when two shells 20 are interlocked, utilize described spring 40 to make two iron core windings 10 be close to composition annular core winding.
In the present embodiment, the fan annular core winding that described two annular iron core windings 10 of fan are 10, two semicircles of fan annular core winding of semicircle is close to can form complete annular iron core winding.
In other embodiments, described two annular iron core windings of fan can be also the fan annular core winding of a large semicircle, the fan annular core winding of a small semicircle fan, and the fan annular core winding of two semicircles is close to can form complete annular iron core winding.
In the present embodiment, each iron core winding 10 comprises the coil that is positioned at the iron core in centre position and is positioned at parcel iron core, connects the coil of described two iron core windings by parallel connection or series system.
Described spring 40 is flat spring, flat spring or stage clip.In the present embodiment, described spring 40 is flat spring, and when two shells 20 are interlocked, flat spring is pushed bending by iron core winding 10, utilizes described flat spring to make two iron core windings 10 be close to composition annular core winding.
In the present embodiment, one end of described two shells 20 is rotatably connected by rotating shaft 26, and the other end utilizes securing member 25 to be interlocked.Described securing member 25 is buckle.In other embodiments, described securing member can also be bolt etc.
In other embodiments, described two shells can split completely, and the two ends of two shells all utilize securing member to be interlocked.
In the present embodiment, described two surfaces of contacting of the annular iron core windings 10 of fan are plane, and in the time that two shells 20 are interlocked, the cross section that two iron core windings 10 contact fits and makes two iron core windings 10 be close to composition annular core winding.
In other embodiments, the surface that described two annular iron core windings of fan contact is inclined-plane or serrated face, and the just laminating more of cross section that two iron core windings are contacted, can not misplace.
In the time that the surface at described two annular iron core winding two ends of fan is inclined-plane, the surface at each iron core winding two ends simultaneously to the inside or outside tilt.In the present embodiment, inner side refers to the direction towards the annular center of circle of fan, and outside refers to the direction away from the annular center of circle of fan,
Even so, due to the limitation of existing manufacture craft, the size of iron core winding and shell always produces error with design size, cannot accomplish that two shells are interlocked time, fit completely in the cross section that two iron core windings 1 contact, or also not laminating completely, or cross laminating, two shells cannot normally be fastened.Therefore in the present embodiment, between described shell 10 and iron core winding 10, there is redundant space along iron core winding 10 planes, can move a little along iron core winding 10 planes, utilize two springs 40 of fanning between annular iron core winding 10 outsides and shell 20 simultaneously, when two shells 20 are interlocked, utilize described spring 40 to make two iron core windings 10 be close to composition annular core winding.
In the present embodiment, in the time that two shells are opened, gapped between described spring 40 and iron core winding 40, be convenient to the installation of iron core winding 40.
Therein in an embodiment, described fixture 30 is for holding the consistent size of opening size and iron core winding of iron core winding 40, between described fixture and shell, there is gap, described iron core winding 10 can be moved a little along iron core winding 10 planes in shell 10.
In the present embodiment, utilize two shells, 20 one end correspondences that securing member is interlocked to there is jut 21 and depressed part (not shown), utilize described jut 21 and depressed part to make two shells can be just to being interlocked.And each shell 20 has at least one fixture near the position at shell two ends, the described fixture near shell end positions can not move along the radial and axial direction of iron core winding, but can move slightly along iron core winding folding direction, utilize the position between cross section upper core winding 10 and the shell 20 at the described fixture fixed housing two ends near shell end positions, two iron core windings 10 that finally fit are completely just being fitted, avoid magnetic flux generation loss.
Please refer to Fig. 4, for the disassemblying structure schematic diagram of the zero sequence current mutual inductor of the utility model the second embodiment, between described iron core winding 10 and shell 20, also there is shielding case 50, this shielding case can keep the uniformity of winding surrounding magnetic field, avoids iron core winding in the time of heavy current impact to produce interference signal.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; can utilize method and the technology contents of above-mentioned announcement to make possible variation and amendment to technical solutions of the utility model; therefore; every content that does not depart from technical solutions of the utility model; any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all belong to the protection range of technical solutions of the utility model.

Claims (10)

1. an open-close type zero sequence current mutual inductor, is characterized in that, comprising: two annular iron core windings of fan,
With two two shells that iron core winding is corresponding, described two shells utilize securing member to be interlocked;
In described each shell, pass through fixture secured core winding, between described shell and iron core winding, there is redundant space along iron core winding plane, and the position between described two fan annular core winding outsides and shell has spring, when two shells are interlocked, utilize described spring to make two iron core windings fit tightly composition annular core winding.
2. open-close type zero sequence current mutual inductor as claimed in claim 1, is characterized in that, described spring is flat spring, flat spring or stage clip.
3. open-close type zero sequence current mutual inductor as claimed in claim 1, is characterized in that, one end of described two shells is rotatably connected, and the other end utilizes securing member to be interlocked.
4. open-close type zero sequence current mutual inductor as claimed in claim 1, is characterized in that, the two ends of described two shells all utilize securing member to be interlocked.
5. open-close type zero sequence current mutual inductor as claimed in claim 1, is characterized in that, the surface that described two annular iron core windings of fan contact is plane, inclined-plane or serrated face.
6. zero sequence current mutual inductor as claimed in claim 1, is characterized in that, in the time that two shells are opened, gapped between described spring and iron core winding.
7. open-close type zero sequence current mutual inductor as claimed in claim 1, is characterized in that, between described iron core winding and shell, also has shielding case.
8. open-close type zero sequence current mutual inductor as claimed in claim 1, is characterized in that, the consistent size of described fastener openings size and iron core winding, has gap between described fixture and shell.
9. open-close type zero sequence current mutual inductor as claimed in claim 1, is characterized in that, utilizes two shell one end correspondences that securing member is interlocked to have jut and depressed part, and two shells are interlocked.
10. open-close type zero sequence current mutual inductor as claimed in claim 9, is characterized in that, each shell has at least one fixture near the position at shell two ends, utilizes the position between cross section upper core winding and the shell at described fixture fixed housing two ends.
CN201420439636.1U 2014-08-06 2014-08-06 Open-close type zero sequence current mutual inductor CN204029597U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104977443A (en) * 2015-06-15 2015-10-14 苏州市新瑞奇节电科技有限公司 Smart electric meter with external transformer
CN105044544A (en) * 2015-08-28 2015-11-11 山西太钢不锈钢股份有限公司 Detection method prior to cutting off of large cross-section high voltage cable
CN105140872A (en) * 2015-09-16 2015-12-09 山东康威通信技术股份有限公司 Armored protective layer monitoring terminal structure and mounting method thereof
CN105609299A (en) * 2016-03-11 2016-05-25 吴世植 Waterproof detachable current transformer
CN108828287A (en) * 2018-04-08 2018-11-16 江阴市星火电子科技有限公司 It is a kind of for measure traverse line electric current, voltage, temperature open-close type mutual inductor
CN109448955A (en) * 2018-10-15 2019-03-08 国网山东省电力公司烟台供电公司 A kind of power marketing Current Transformer
CN110690022A (en) * 2019-11-11 2020-01-14 安徽昭田电子科技有限公司 Assembled magnetic core and production process thereof
CN110767428A (en) * 2019-11-07 2020-02-07 安徽昭田电子科技有限公司 Magnetic core coil component and manufacturing method of magnetic core
WO2020244144A1 (en) * 2019-06-04 2020-12-10 北京航天常兴科技发展股份有限公司 Unit-type current transformer

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104977443A (en) * 2015-06-15 2015-10-14 苏州市新瑞奇节电科技有限公司 Smart electric meter with external transformer
CN105044544A (en) * 2015-08-28 2015-11-11 山西太钢不锈钢股份有限公司 Detection method prior to cutting off of large cross-section high voltage cable
CN105044544B (en) * 2015-08-28 2017-12-26 山西太钢不锈钢股份有限公司 Detection method before heavy in section high-tension cable is sawed-off
CN105140872A (en) * 2015-09-16 2015-12-09 山东康威通信技术股份有限公司 Armored protective layer monitoring terminal structure and mounting method thereof
CN105140872B (en) * 2015-09-16 2018-12-18 山东康威通信技术股份有限公司 Armouring sheath monitors terminal structure and its installation method
CN105609299A (en) * 2016-03-11 2016-05-25 吴世植 Waterproof detachable current transformer
CN108828287A (en) * 2018-04-08 2018-11-16 江阴市星火电子科技有限公司 It is a kind of for measure traverse line electric current, voltage, temperature open-close type mutual inductor
CN109448955A (en) * 2018-10-15 2019-03-08 国网山东省电力公司烟台供电公司 A kind of power marketing Current Transformer
CN109448955B (en) * 2018-10-15 2021-01-15 国网山东省电力公司烟台供电公司 Current transformer for electric power marketing
WO2020244144A1 (en) * 2019-06-04 2020-12-10 北京航天常兴科技发展股份有限公司 Unit-type current transformer
CN110767428A (en) * 2019-11-07 2020-02-07 安徽昭田电子科技有限公司 Magnetic core coil component and manufacturing method of magnetic core
CN110690022A (en) * 2019-11-11 2020-01-14 安徽昭田电子科技有限公司 Assembled magnetic core and production process thereof

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141217

Termination date: 20190806

CF01 Termination of patent right due to non-payment of annual fee