CN201408642Y - Optical fiber current transformer - Google Patents
Optical fiber current transformer Download PDFInfo
- Publication number
- CN201408642Y CN201408642Y CN2009200694642U CN200920069464U CN201408642Y CN 201408642 Y CN201408642 Y CN 201408642Y CN 2009200694642 U CN2009200694642 U CN 2009200694642U CN 200920069464 U CN200920069464 U CN 200920069464U CN 201408642 Y CN201408642 Y CN 201408642Y
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- CN
- China
- Prior art keywords
- optical fiber
- metal flange
- current transformer
- metal
- ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides an optical fiber current transformer and is characterized in that the optical fiber current transformer comprises a first metal flange and a second metal flange which are abutted with each other; wherein the first and the second metal flanges are provided with holes, three annular optical fiber sensors are provided between the first metal flange and the second metal flange, a plurality of insulation rings are respectively provided between the holes and the annular optical fiber sensors, the contact parts between the insulation rings and the first metal ring and between the insulation ring and the second metal ring are respectively provided with a seal ring. The utility model has the advantages that the optical fiber current transformer can effectively avoid electromagnetic pollution of traditional electromagnetic transformer, has less elements and simple assembly structure, simplifies complex structure of original electromagnetic current transformer to reducevolume of component significantly and improve appearance, and provides standard analogue and digital interfaces, therefore, the optical fiber current transformer can directly replace traditional electromagnetic product to realize easy upgrade of secondary system and accelerate the development of digital transformer substation.
Description
Technical field
The utility model relates to a kind of optical fiber current mutual inductor, is used for the three-phase common box type gas insulating metal enclosed switchgear, belongs to the current transformer technical field.
Background technology
What use in the at present domestic and international three-phase common box type gas insulating metal enclosed switchgear is electromagnetic current transducer; electromagnetic current transducer is to be made of parts such as secondary winding iron-core coil, shielding cylinder, supporting bracket and housings; iron-core coil is under the effect of electrical conductor; utilize the principle of electromagnetic induction that high-voltage large current is converted into the little electric current of low-voltage, secondary system relaying protection of power supply power and measurement are used.The complex structure of electromagnetic current transducer, volume is big, and it is big to take three-phase common box type gas insulating metal enclosed switchgear space, and secondary winding has electromagnetic interference, is unfavorable for environmental protection.
Summary of the invention
The purpose of this utility model provides a kind of current transformer of effectively avoiding the electromagnetic pollution of traditional electromagnetic transformer, and it is simple in structure, and volume is little.
In order to achieve the above object, the technical solution of the utility model provides a kind of optical fiber current mutual inductor, it is characterized in that, first metal flange and second metal flange that comprise mutual butt joint, on first metal flange and second metal flange, have the hole, three annular fiber transducers are installed between first metal flange and second metal flange, between hole and annular fiber transducer, be provided with dead ring, be respectively equipped with sealing ring in the contact position of dead ring and first metal flange and second metal flange.
A kind of optical fiber current mutual inductor that the utility model provides substitutes the secondary winding iron-core coil of traditional instrument transformer with the optical fiber new material of environmental protection and energy saving, not only effectively must avoid the electromagnetic pollution of traditional electromagnetic transformer but also eliminate magnetic saturation and ferro resonance, save a large amount of metal materials.
The utility model has the advantages that: the effective electromagnetic pollution that must avoid traditional electromagnetic transformer; Parts are few, and assembly structure is simple, simplify the labyrinth of former electromagnetic current transducer, greatly dwindle component size, product appearance attractive in appearance; Standardized analog-and digital-two kinds of interfaces can be provided, can directly replace traditional electrical magnetic-type product, be convenient to the upgrading of electrical secondary system, promote the digital transformer substation process.
Description of drawings
The side partial sectional view of a kind of optical fiber current mutual inductor that Fig. 1 provides for the utility model;
Fig. 2 is that A-A among Fig. 1 is to view;
Fig. 3 is the structural representation of annular fiber transducer.
Embodiment
Specify the utility model below in conjunction with embodiment.
Embodiment
As shown in Figures 1 and 2, the structural representation of a kind of optical fiber current mutual inductor that provides for the utility model is made up of first metal flange 3, second metal flange 4, annular fiber transducer 5, sealing ring 7 and dead ring 8.
The annular fiber transducer 5 of three distributions triangular in shape is installed between first metal flange 3 and second metal flange 4, two flanges be shaped as circle, in same position all porose 11.Side at metal flange 4 is processed with a cavity, annular fiber transducer 5 is fixed by bolts in this cavity, optic fibre wire 1 is drawn from cavity hatch, dead ring 8 and sealing ring 7 are installed between the hole 11 and annular fiber transducer 5 of metal flange 4, the magnetic circuit of dead ring 8 blocking-up electromagnetic fields, make the electric current of Fibre Optical Sensor induction not be subjected to electromagnetic interference, sealing ring 7 is isolated insulating gas in the Cubicle Gas-Insulated Switchgear 6 and air 10, annular fiber transducer 5 is in the atmospheric environment, not influenced by insulating gas 6, on the zero potential body of Cubicle Gas-Insulated Switchgear.
As shown in Figure 3, be the structural representation of annular fiber transducer, form that monnolithic case is a ring-type by optic fibre wire 1 and circular shell 2.Optic fibre wire 1 coiled ring-type is installed in the housing 2 of similar shape, and housing 2 is to be made of insulation and two kinds of material assemblings of metal, has blocking-up magnetic circuit function.
Electrical conductor 9 passes the hole 11 in two metal flanges, annular fiber transducer 5 adopts the magneto-optic Faraday effect, light wave is under the action of a magnetic field of electrical conductor, the propagation generation phase change of light, by detecting the phase change of light intensity, measure the deflection angle of light, obtain the electric current of secondary side, electric current is exported in the analog or digital mode.
Claims (2)
1. optical fiber current mutual inductor, it is characterized in that, first metal flange (3) and second metal flange (4) that comprise mutual butt joint, on first metal flange (3) and second metal flange (4), have hole (11), between first metal flange (3) and second metal flange (4), be provided with three annular fiber transducers (5), between hole (11) and annular fiber transducer (5), be provided with dead ring (8), be respectively equipped with sealing ring (7) in the contact position of dead ring (8) and first metal flange (3) and second metal flange (4).
2. a kind of optical fiber current mutual inductor as claimed in claim 1, it is characterized in that described annular fiber transducer (5) comprises circular shell (2) and optic fibre wire (1), optic fibre wire (1) coiled ring-type, be installed in the circular shell (2), draw from the opening part of circular shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200694642U CN201408642Y (en) | 2009-03-26 | 2009-03-26 | Optical fiber current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200694642U CN201408642Y (en) | 2009-03-26 | 2009-03-26 | Optical fiber current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201408642Y true CN201408642Y (en) | 2010-02-17 |
Family
ID=41679585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200694642U Expired - Lifetime CN201408642Y (en) | 2009-03-26 | 2009-03-26 | Optical fiber current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201408642Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647224A (en) * | 2013-11-14 | 2014-03-19 | 河南平高东芝高压开关有限公司 | All-optical current mutual-inductor device connecting three-phase box-sharing combination electric appliance |
| CN109884363A (en) * | 2017-12-06 | 2019-06-14 | 北京自动化控制设备研究所 | A kind of optical fiber current mutual inductor of low humidity sensibility |
-
2009
- 2009-03-26 CN CN2009200694642U patent/CN201408642Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647224A (en) * | 2013-11-14 | 2014-03-19 | 河南平高东芝高压开关有限公司 | All-optical current mutual-inductor device connecting three-phase box-sharing combination electric appliance |
| CN103647224B (en) * | 2013-11-14 | 2016-01-20 | 河南平芝高压开关有限公司 | A kind of full optical current mutual inductor device connecting Three-phase common-box type combined electric appliance |
| CN109884363A (en) * | 2017-12-06 | 2019-06-14 | 北京自动化控制设备研究所 | A kind of optical fiber current mutual inductor of low humidity sensibility |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100217 |