CN107516593A - A kind of small intelligent current transformer - Google Patents
A kind of small intelligent current transformer Download PDFInfo
- Publication number
- CN107516593A CN107516593A CN201710951893.1A CN201710951893A CN107516593A CN 107516593 A CN107516593 A CN 107516593A CN 201710951893 A CN201710951893 A CN 201710951893A CN 107516593 A CN107516593 A CN 107516593A
- Authority
- CN
- China
- Prior art keywords
- fixing pipe
- coil
- contact box
- panel
- current transformer
- Prior art date
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical group O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The present invention proposes a kind of small intelligent current transformer, including outer tube, primary winding, secondary coil and contact box；The outer tube includes coil fixing pipe and contact box fixing pipe is seen, coil fixes end surfaces and fixes first panel, busbar is centrally disposed in coil fixing pipe through first panel, iron core is additionally provided with coil fixing pipe, primary winding and secondary coil are wrapped by iron core to be arranged in coil fixing pipe, second panel is fixed in the end face of contact box fixing pipe, contact box is fixed in contact box fixing pipe by second panel sealing, temperature rise can be monitored on-line, good airproof performance, service life is improved, more securely and reliably.
Description
Technical field
The invention belongs to a kind of current transformer, and in particular to a kind of small intelligent applied to air insulation switch cubicle
Current transformer.
Background technology
Current transformer (hereinafter referred to as CT) is made up of according to electromagnetic induction principle the iron core and winding that close.The one of CT
Secondary umber of turn is seldom, and general wire single turn is unshakable in one's determination through CT；CT secondary winding turn ratio is more, secondary winding output end one
As be serially connected in measuring instrumentss or protective loop.Because first and second umber of turn is inconsistent, that is, CT no-load voltage ratios be present, so CT
Primary side or on high-tension side high current can be converted to secondary side or the low current of low-pressure side, be easy to instrument and protection device to survey
Amount.
In order to meet the requirement of air insulation switch cubicle, existing current transformer volume is larger, is easily sent out in the course of work
The situation of raw overheat, influences the service life of current transformer, influences security performance.
The content of the invention
The present invention proposes a kind of small intelligent current transformer regarding to the issue above, can monitor temperature rise on-line, seals
Property is good, improves service life, more securely and reliably.
Specific technical scheme is as follows：
A kind of small intelligent current transformer, including outer tube, primary winding, secondary coil and contact box；It is described outer
Sleeve pipe includes coil fixing pipe and contact box fixing pipe, and the length L1 of coil fixing pipe is more than the length L2 of contact box fixing pipe,
The outside diameter d 1 of coil fixing pipe is more than the outside diameter d 2 of contact box fixing pipe, and coil fixes end surfaces and fixes first panel, busbar
Through being centrally disposed in coil fixing pipe for first panel, iron core, primary winding and secondary line are additionally provided with coil fixing pipe
Circle is wrapped by iron core to be arranged in coil fixing pipe, and second panel is fixed in the end face of contact box fixing pipe, and contact box passes through
Second panel sealing is fixed in contact box fixing pipe.
A kind of above-mentioned small intelligent current transformer, wherein, the bottom of the outer tube is provided with connection box, connects in box
Provided with temperature sensor.
Beneficial effects of the present invention are：
The present invention connection box in temperature sensor is set, can on-line monitoring leakage current transformer temperature conditions, prevent absolutely
Edge aging；The structure setting of current transformer outer tube and built-in contact box, make coil not exposed in atmosphere, increase alternate sky
Gas distance, overall volume is reduced, good airproof performance, improves service life, more securely and reliably.
Brief description of the drawings
Fig. 1 is sectional view of the present invention.
Fig. 2 is structure chart of the present invention.
Fig. 3 is outer tube sectional view in the embodiment of the present invention two.
Fig. 4 is A portions enlarged drawing in Fig. 3.
Fig. 5 is the second inserted block side view in Fig. 4.
Embodiment
To make technical scheme become apparent from clearly, the present invention is described further below in conjunction with the accompanying drawings,
Any scheme drawn to the technical characteristic progress equivalencing of technical solution of the present invention and conventional reasoning each falls within guarantor of the present invention
Protect scope.
Reference
Outer tube 1, primary winding 2, secondary coil 3, contact box 4, coil fixing pipe 5, contact box fixing pipe 6, the first face
Plate 7, busbar 8, iron core 9, second panel 10, connection box 11, temperature sensor 12, the first slot 13, the first inserted block 14, ball
15th, the second inserted block 16, the second slot 17, the first lead angle 18, first opening 19, rubber seal 20, the 3rd slot 21, second are led
Angle 22, indent 23.
Embodiment one
A kind of small intelligent current transformer as shown in the figure, including outer tube 1, primary winding 2, secondary coil 3 and touch
Head cartridge 4；The outer tube includes coil fixing pipe 5 and contact box fixing pipe 6, and the length L1 of coil fixing pipe consolidates more than contact box
The length L2 of fixed tube, the outside diameter d 1 of coil fixing pipe are more than the outside diameter d 2 of contact box fixing pipe, and coil fixes end surfaces and fixes the
One panel 7, busbar 8 are centrally disposed in coil fixing pipe through first panel, and iron core 9 is additionally provided with coil fixing pipe,
Primary winding and secondary coil are wrapped by iron core to be arranged in coil fixing pipe, and the end face of contact box fixing pipe fixes second
Panel 10, contact box are fixed in contact box fixing pipe by second panel sealing.
The bottom of the outer tube is provided with connection box 11, and temperature sensor 12 is provided with connection box.
Embodiment two
With a kind of small intelligent current transformer described in embodiment one, its difference is：
The end face of the coil fixing pipe is provided with first slot 13 of circle, vertical in the first slot to be provided with a circle first
Inserted block 14, the cross sectional shape of first inserted block is isosceles trapezoidal structure, and the base angle a for the isosceles trapezoidal structure that its section is in is
88 °, the width of the fixing end of the first inserted block is more than the width of the insertion end of the first inserted block, and the cell wall of first slot is provided with
4-6 ball grooves, interference fits is provided with ball 15 in ball grooves；
The first panel is provided with second inserted block 16 of circle, and the width of the second inserted block is less than the width of the first slot, the
The second slot 17 is provided with two inserted blocks, the width of the second slot is identical with the width of the first socket insertion end, on the outside of the second slot
End is provided with the first lead angle 18, some first openings 19 is longitudinally provided with the second slot wall, the width L3 of the first opening is 0.5-
1mm, the second inserted block outer wall cladding set one layer of rubber seal 20, and rubber seal one end extends, simultaneously to first panel direction
Be arranged in the 3rd slot 21 of first panel, the other end of rubber seal is provided with the second lead angle 22, rubber seal it is outer
Wall is provided with indent 23；
Second inserted block is plug-type to be arranged in the first slot, at the same the first inserted block it is plug-type be arranged on second insert
In groove, rubber seal is held out against and is fitted on the first slot wall, meanwhile, ball is pressed together on indent；
Using this structure, it is fixed conveniently, good airproof performance, more securely and reliably.
Claims (2)
1. a kind of small intelligent current transformer, it is characterized in that, including outer tube, primary winding, secondary coil and contact box；
The outer tube includes coil fixing pipe and contact box fixing pipe, and the length L1 of coil fixing pipe is more than the length of contact box fixing pipe
L2 is spent, the outside diameter d 1 of coil fixing pipe is more than the outside diameter d 2 of contact box fixing pipe, and coil fixes end surfaces and fixes first panel, leads
Electricity row being centrally disposed in coil fixing pipe through first panel, is additionally provided with iron core, primary winding and two in coil fixing pipe
Secondary coil is wrapped by iron core and is arranged in coil fixing pipe, and second panel, contact box are fixed in the end face of contact box fixing pipe
It is fixed on by second panel sealing in contact box fixing pipe.
2. a kind of small intelligent current transformer as claimed in claim 1, it is characterized in that, the bottom of the outer tube is provided with
Box is connected, temperature sensor is provided with connection box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710951893.1A CN107516593A (en) | 2017-10-13 | 2017-10-13 | A kind of small intelligent current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710951893.1A CN107516593A (en) | 2017-10-13 | 2017-10-13 | A kind of small intelligent current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107516593A true CN107516593A (en) | 2017-12-26 |
Family
ID=60727350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710951893.1A Pending CN107516593A (en) | 2017-10-13 | 2017-10-13 | A kind of small intelligent current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107516593A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826645Y (en) * | 2005-07-15 | 2006-10-11 | 玉环县云星互感器有限公司 | Contact case type current transformer |
| CN201508768U (en) * | 2009-09-27 | 2010-06-16 | 大连中广互感器制造有限公司 | Wall-penetrating type current transformer |
| CN201741564U (en) * | 2010-07-20 | 2011-02-09 | 湖北大二互科技有限公司 | Epoxy-resin vacuum-pouring dry-type current transformer |
| CN204706453U (en) * | 2015-06-18 | 2015-10-14 | 江苏鑫怡电力设备有限公司 | Automatic alarm instrument transformer |
| CN106128849A (en) * | 2016-08-11 | 2016-11-16 | 特变电工湖南智能电气有限公司 | Standard type high pressure demarcation vacuum circuit breaker |
| CN106158332A (en) * | 2016-06-22 | 2016-11-23 | 四川电器集团股份有限公司 | Transformer with contact box |
| CN206003620U (en) * | 2016-08-31 | 2017-03-08 | 华仪电气股份有限公司 | A kind of contact box current transformer |
| CN207199452U (en) * | 2017-10-13 | 2018-04-06 | 上海基胜能源股份有限公司 | A kind of small intelligent current transformer |
-
2017
- 2017-10-13 CN CN201710951893.1A patent/CN107516593A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826645Y (en) * | 2005-07-15 | 2006-10-11 | 玉环县云星互感器有限公司 | Contact case type current transformer |
| CN201508768U (en) * | 2009-09-27 | 2010-06-16 | 大连中广互感器制造有限公司 | Wall-penetrating type current transformer |
| CN201741564U (en) * | 2010-07-20 | 2011-02-09 | 湖北大二互科技有限公司 | Epoxy-resin vacuum-pouring dry-type current transformer |
| CN204706453U (en) * | 2015-06-18 | 2015-10-14 | 江苏鑫怡电力设备有限公司 | Automatic alarm instrument transformer |
| CN106158332A (en) * | 2016-06-22 | 2016-11-23 | 四川电器集团股份有限公司 | Transformer with contact box |
| CN106128849A (en) * | 2016-08-11 | 2016-11-16 | 特变电工湖南智能电气有限公司 | Standard type high pressure demarcation vacuum circuit breaker |
| CN206003620U (en) * | 2016-08-31 | 2017-03-08 | 华仪电气股份有限公司 | A kind of contact box current transformer |
| CN207199452U (en) * | 2017-10-13 | 2018-04-06 | 上海基胜能源股份有限公司 | A kind of small intelligent current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ye Xuelin Inventor after: Pan Xinfeng Inventor after: Li Jian Inventor after: Ji Rong Inventor before: Zhang Haitao Inventor before: Chen Jinhua |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180206 Address after: 201401 Shanghai, Fengxian District, Hong Kong Road, No. 888 Applicant after: Shanghai based energy Limited by Share Ltd Address before: 212134 Zhenjiang Province, New District, Jiangsu Port Road No. 728 Applicant before: Zhenjiang Dangao Electric Co., Ltd. |
|
| TA01 | Transfer of patent application right |