CN204215892U - A kind of extraordinary current transformer - Google Patents
A kind of extraordinary current transformer Download PDFInfo
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- CN204215892U CN204215892U CN201420723278.7U CN201420723278U CN204215892U CN 204215892 U CN204215892 U CN 204215892U CN 201420723278 U CN201420723278 U CN 201420723278U CN 204215892 U CN204215892 U CN 204215892U
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- housing
- current transformer
- connection bar
- thermoelectric module
- primary winding
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Abstract
The utility model discloses a kind of extraordinary current transformer, comprise housing, annular core is provided with in housing, annular core is wound with primary winding, housing upper end is provided with primary connection bar upward, primary connection bar is connected with primary winding by wire, housing upper end is provided with the thermal hole running through housing from top to down, thermal hole inner surface is embedded with heat abstractor, heat abstractor comprises thermoelectric module and copper aluminium fin chimeric with heat pipe, the face, hot junction of thermoelectric module is attached on copper aluminium fin chimeric with heat pipe, and the cold junction face of thermoelectric module is attached on primary winding.The outer wall of primary connection bar is provided with the circular radiating dish of size interval from top to bottom successively, and circular radiating dish is from edge to end progressive additive.Housing bottom is provided with some layers of insulation full skirt.This extraordinary current transformer structure of the utility model is novel in design, can fast by the heat loss that produces in housing in surrounding environment, increase the service life.
Description
Technical field
The utility model relates to high voltage electric equipment technical field, relates to current transformer, specifically a kind of extraordinary current transformer.
Background technology
Current transformer principle is according to electromagnetic induction principle, and current transformer is made up of the iron core closed and winding.During electric power system fault, current transformer is subject to thermal effect and the electrodynamic action of the huge current flow caused due to short circuit current, current transformer should have and can bear and the unlikely ability be damaged, and this ability of bearing thermally-stabilised and Dynamic stability multiple represent.Thermally-stabilised multiple refers in heat-stable current 1s and does not cause the heating of current transformer to exceed the ratio allowing the electric current of limit and the rated current of current transformer.Dynamic stability multiple is the maximum current instantaneous value that can bear of current transformer and the ratio of its rated current.
Also can be dispersed in time in surrounding environment with certain caloric requirement in the course of work at ordinary times; When producing power failure, the huge heat of generation is like this equally, and most current transformer cannot reach the effect of heat radiation, therefore, needs the current transformer designing high efficiency and heat radiation.
In power transmission and distribution switchgear assembly, cabinet and interlocking device substantially still adopt the scheme of existing comparative maturity, and key will solve Insulation Problems exactly.The insulation distance of cabinet median generatrix is the key factor affecting product quality and safety, insulation distance is less easily causes disruptive discharge, make whole Switchgear product technical performance low, test does not pass a test, and can not meet the requirement of domestic running environment and standard, and thermal diffusivity is bad, temperature rise, and then current transformer insulation breakdown can be caused, severe patient may set off an explosion, and causes security incident.
Summary of the invention
The utility model is not enough for prior art, provides a kind of extraordinary current transformer, and this extraordinary current transformer structure is novel in design, can fast by the heat loss that produces in housing in surrounding environment, increase the service life.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of extraordinary current transformer, comprise housing, annular core is provided with in described housing, described annular core is wound with primary winding, described housing upper end is provided with primary connection bar upward, described primary connection bar is connected with described primary winding by wire, in described housing with described primary connection bar peripheral hardware once property fill the epoxy resin insulating layers formed, described housing upper end is provided with the thermal hole running through described housing from top to down, described thermal hole inner surface is embedded with heat abstractor, described heat abstractor comprises thermoelectric module and copper aluminium fin chimeric with heat pipe, the face, hot junction of described thermoelectric module is attached on described copper aluminium fin chimeric with heat pipe, the cold junction face of described thermoelectric module is attached on described primary winding.
In technique scheme, preferably, the outer wall of described primary connection bar is provided with the circular radiating dish of size interval from top to bottom successively, and described circular radiating dish is from edge to end progressive additive.Beneficial effect: by radiator structure reasonable in design on housing, can ensure in every day use process and power failure time the heat that produces fall apart in time in surrounding environment.
In technique scheme, preferably, described housing bottom is provided with some layers of insulation full skirt.Beneficial effect: the some layers of insulator umbrella arranged like this, can ensure enough creepage distances.
The utility model compared with prior art, there is following beneficial effect: this extraordinary current transformer structure of the utility model is novel in design, by radiator structure reasonable in design on housing, can ensure in every day use process and power failure time the heat that produces fall apart in surrounding environment in time, enough creepage distances can be ensured, increase the service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail: see Fig. 1, a kind of extraordinary current transformer, comprise housing 1, annular core 2 is provided with in described housing 1, described annular core 2 is wound with primary winding 3, described housing 1 upper end is provided with primary connection bar 4 upward, described primary connection bar 4 is connected with described primary winding 3 by wire, in described housing 1 with described primary connection bar 4 peripheral hardware once property fill the epoxy resin insulating layers 6 formed, described housing 1 upper end is provided with the thermal hole 5 running through described housing 1 from top to down, described thermal hole 5 inner surface is embedded with heat abstractor, described heat abstractor comprises thermoelectric module 71 and copper aluminium fin 72 chimeric with heat pipe, the face, hot junction of described thermoelectric module 71 is attached on described copper aluminium fin 72 chimeric with heat pipe, the cold junction face of described thermoelectric module 71 is attached on described primary winding 3.
The outer wall of described primary connection bar 4 is provided with the circular radiating dish 8 of size interval from top to bottom successively, and described circular radiating dish 8 is from edge to end progressive additive.By radiator structure reasonable in design on housing 1, can ensure in every day use process and power failure time the heat that produces fall apart in time in surrounding environment.
Some layers of insulation full skirt 9 are provided with on bottom described housing 1.The some layers of insulator umbrella 9 of such setting, can ensure enough creepage distances.
During use, external power source provides electric energy to thermoelectric module 71, the face, hot junction of thermoelectric module 71 is attached on copper aluminium fin 72 chimeric with heat pipe, the cold junction face of thermoelectric module 71 is attached on described primary winding 3, due to Peltier effect, the heat that primary winding 3 produces, by thermoelectric module 71 and copper aluminium fin 72 chimeric with heat pipe, distributes through thermal hole 5.
The utility model compared with prior art, there is following beneficial effect: this extraordinary current transformer structure of the utility model is novel in design, by radiator structure reasonable in design on housing, can ensure in every day use process and power failure time the heat that produces fall apart in surrounding environment in time, enough creepage distances can be ensured, increase the service life.
Claims (3)
1. an extraordinary current transformer, comprise housing (1), annular core (2) is provided with in described housing (1), described annular core (2) is wound with primary winding (3), described housing (1) upper end is provided with primary connection bar (4) upward, described primary connection bar (4) is connected with described primary winding (3) by wire, it is characterized in that: in described housing (1) with described primary connection bar (4) peripheral hardware once property fill the epoxy resin insulating layers (6) formed, described housing (1) upper end is provided with the thermal hole (5) running through described housing (1) from top to down, described thermal hole (5) inner surface is embedded with heat abstractor, described heat abstractor comprises thermoelectric module (71) and copper aluminium fin (72) chimeric with heat pipe, the face, hot junction of described thermoelectric module (71) is attached on described copper aluminium fin (72) chimeric with heat pipe, the cold junction face of described thermoelectric module (71) is attached on described primary winding (3).
2. a kind of extraordinary current transformer as claimed in claim 1, is characterized in that: the outer wall of described primary connection bar (4) is provided with the circular radiating dish (8) of size interval from top to bottom successively, and described circular radiating dish (8) is from edge to end progressive additive.
3. a kind of extraordinary current transformer as claimed in claim 2, is characterized in that: described housing (1) bottom is provided with some layers of insulation full skirt (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420723278.7U CN204215892U (en) | 2014-11-27 | 2014-11-27 | A kind of extraordinary current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420723278.7U CN204215892U (en) | 2014-11-27 | 2014-11-27 | A kind of extraordinary current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204215892U true CN204215892U (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420723278.7U Active CN204215892U (en) | 2014-11-27 | 2014-11-27 | A kind of extraordinary current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204215892U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107025992A (en) * | 2017-06-08 | 2017-08-08 | 东莞市瑞为电器配件有限公司 | A kind of binding post structure of transformer |
| RU183345U1 (en) * | 2018-02-21 | 2018-09-18 | Александр Михайлович Галкин | DEVICE FOR TRANSFORMING THERMAL ENERGY OF A TRANSFORMER TO ELECTRIC ENERGY |
| CN112698239A (en) * | 2020-11-10 | 2021-04-23 | 国网山东省电力公司淄博供电公司 | Portable mutual inductor polarity tester |
-
2014
- 2014-11-27 CN CN201420723278.7U patent/CN204215892U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107025992A (en) * | 2017-06-08 | 2017-08-08 | 东莞市瑞为电器配件有限公司 | A kind of binding post structure of transformer |
| RU183345U1 (en) * | 2018-02-21 | 2018-09-18 | Александр Михайлович Галкин | DEVICE FOR TRANSFORMING THERMAL ENERGY OF A TRANSFORMER TO ELECTRIC ENERGY |
| CN112698239A (en) * | 2020-11-10 | 2021-04-23 | 国网山东省电力公司淄博供电公司 | Portable mutual inductor polarity tester |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |