CN207199452U - A kind of small intelligent current transformer - Google Patents
A kind of small intelligent current transformer Download PDFInfo
- Publication number
- CN207199452U CN207199452U CN201721318963.1U CN201721318963U CN207199452U CN 207199452 U CN207199452 U CN 207199452U CN 201721318963 U CN201721318963 U CN 201721318963U CN 207199452 U CN207199452 U CN 207199452U
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- CN
- China
- Prior art keywords
- fixing pipe
- coil
- contact box
- panel
- current transformer
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Abstract
The utility model 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 utility model belongs to a kind of current transformer, and in particular to a kind of small-sized intelligence applied to air insulation switch cubicle
Can galvanic 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.
Utility model content
The utility model proposes a kind of small intelligent current transformer regarding to the issue above, can monitor temperature rise on-line,
Good airproof performance, service life is improved, 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.
The beneficial effects of the utility model are：
The utility model connection box in temperature sensor is set, can on-line monitoring leakage current transformer temperature conditions, prevent
Only insulation ag(e)ing；The structure setting of current transformer outer tube and built-in contact box, make coil not exposed in atmosphere, increase phase
Between air distance, reduce overall volume, good airproof performance, improve service life, more securely and reliably.
Brief description of the drawings
Fig. 1 is the utility model section view.
Fig. 2 is the utility model structure chart.
Fig. 3 is outer tube sectional view in the utility model embodiment 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 the technical solution of the utility model become apparent from clearly, below in conjunction with the accompanying drawings entering the utility model traveling one
Step description, any scheme drawn to the technical characteristic progress equivalencing of technical solutions of the utility model and conventional reasoning fall
Enter scope of protection of the utility model.
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 |
|---|---|---|---|
| CN201721318963.1U CN207199452U (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 |
|---|---|---|---|
| CN201721318963.1U CN207199452U (en) | 2017-10-13 | 2017-10-13 | A kind of small intelligent current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207199452U true CN207199452U (en) | 2018-04-06 |
Family
ID=61787962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721318963.1U Active CN207199452U (en) | 2017-10-13 | 2017-10-13 | A kind of small intelligent current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207199452U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516593A (en) * | 2017-10-13 | 2017-12-26 | 镇江市丹高电器有限公司 | A kind of small intelligent current transformer |
-
2017
- 2017-10-13 CN CN201721318963.1U patent/CN207199452U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516593A (en) * | 2017-10-13 | 2017-12-26 | 镇江市丹高电器有限公司 | A kind of small intelligent current transformer |
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