CN209087551U - A kind of current transformer - Google Patents
A kind of current transformer Download PDFInfo
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- CN209087551U CN209087551U CN201822198306.9U CN201822198306U CN209087551U CN 209087551 U CN209087551 U CN 209087551U CN 201822198306 U CN201822198306 U CN 201822198306U CN 209087551 U CN209087551 U CN 209087551U
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- coil
- shielding part
- current transformer
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- shell
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Abstract
The utility model discloses a kind of current transformers, shielding part and shell including fastening adaptation, assembly cavity is formed between the shielding part and the shell, the middle part of the shielding part stem protruding upward being provided in the assembly cavity, the bottom periphery portion of the stem, which is arranged with, is bonded the coil being adapted to the top surface of shielding part, the pouring basin that can accommodate castable is formed between the inner ring surface of the coil and the outer peripheral surface of the stem, it is coated with breathable films on the outer wall of the coil, is coated with hot melt adhesive layer on the two sides of the breathable films.Material leakage phenomenon occurs in the component casting process of the current transformer, and its production efficiency is higher.
Description
Technical field
The utility model relates to grid equipment necessary accessories technical field, in particular to a kind of current transformer.
Background technique
Current transformer is a kind of relatively conventional mutual inductance potential device, and current transformer at this stage, is generallyd use
Coil, which matches to merge with shielding, is combined the assembling mode of casting fixation to be generally divided into interior casting according to the difference of its pouring type
Formula and full cast-type.For interior pouring current transformer compared with traditional integrated poured structure, it is simple to have a structure, is easy to raw
Produce, it is easy to repair the advantages that, thus be widely used.
However, for the current transformer of voltage levels, since its coil is generally relatively large in diameter, in assembling process
After the completion of coil is put off, it is difficult to ensure that existing between coil without gap, and once there is gap, will lead to subsequent casting process
In by these gaps material leakage phenomenon occurs, and once there is above-mentioned material leakage phenomenon, then needing after clearing up coil again could be into
Row subsequent handling, seriously constrains production efficiency, causes inconvenience to relevant manufacturing process.
Therefore, how to avoid that material leakage phenomenon occurs in the component casting process of current transformer, improving its production efficiency is
The important technological problems that those skilled in the art need to solve at present.
Utility model content
The purpose of the utility model is to provide a kind of current transformer, occur in the component casting process of the current transformer
Material leakage phenomenon, and its production efficiency is higher.
In order to solve the above technical problems, the utility model provides a kind of current transformer, the shielding part including fastening adaptation
And shell, assembly cavity is formed between the shielding part and the shell, the middle part of the shielding part is protruding upward to be provided with positioned at institute
The stem in assembly cavity is stated, the bottom periphery portion of the stem, which is arranged with, is bonded the coil being adapted to the top surface of shielding part, described
The pouring basin that can accommodate castable is formed between the inner ring surface of coil and the outer peripheral surface of the stem, is coated on the outer wall of the coil
There are breathable films, is coated with hot melt adhesive layer on the two sides of the breathable films.
Preferably, it is bonded between the bottom surface of the coil and the top surface of the shielding part and is provided with annular sponge rubber strip.
Preferably, the coil at least two, each coil are successively arranged along the axial direction of the stem, and adjacent two
Fitting is provided with the annular sponge rubber strip between the coil.
Preferably, the peripheral part of the shell is provided with boss, by sequentially passing through between the shell and the shielding part
The boss and the bolt of the shielding part outer rim are fastened.
Preferably, the breathable films are that half-stack package is wound on the outer wall of the coil.
Preferably, the breathable films coated with hot melt adhesive layer are double water chestnut dispensing films.
Relatively above-mentioned background technique, current transformer provided by the utility model assemble in use process, by coil
Stem external juxtaposition is sheathed on shielding part, is made on breathable films two sides using Equipments for Heating Processing such as thermostatic drying chambers later
Hot melt adhesive layer moderately softening restore viscosity, coil is sufficiently bonded to Nian Jie, to generate in bonding process gas with shielding part
It can be discharged via the aperture on breathable films, after reliable bonding, the component after bonding is cooled to room temperature, so that above-mentioned heat
Melt layer solidifies sizing again, later again injects castable in pouring basin, is sheathed on shell after material feeding cooling and solidifying to be poured
The outside of stem and coil simultaneously fastens the assembling that the current transformer can be completed with shielding part contraposition.Entire operation process letter
Easy row, and will be reliably bonded between coil matching piece related to shielding part etc. admittedly using the breathable films for being coated with hot melt adhesive layer
It is fixed, and the cooperation gap between coil matching piece associated therewith is effectively closed, to effectively prevent subsequent pouring practice process
The middle possible material leakage phenomenon occurred, and then no longer need to clear up the coil after material leakage again, significantly improve the electric current
The assembling production efficiency of mutual inductor, and improve its product structure intensity and the quality of production.
In another preferred embodiment of the utility model, it is bonded between the bottom surface of the coil and the top surface of the shielding part
It is provided with annular sponge rubber strip.The annular sponge rubber strip can further increase between the related matching piece such as coil and shielding part
Structure airtightness, to further avoid the generation of material leakage phenomenon, and certain journey can be provided for coil and its related matching piece
Phenomena such as structure of degree buffers, associated component damage caused by avoiding the structure quake in equipment running process or impacting.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structure sectional view of current transformer provided by a kind of specific embodiment of the utility model.
Wherein, 11- shielding part, 111- stem, 112- pouring basin, 12- shell, 121- assembly cavity, 122- boss, 13- line
Circle, 14- annular sponge rubber strip, 15- bolt.
Specific embodiment
The core of the utility model is to provide a kind of current transformer, occurs in the component casting process of the current transformer
Material leakage phenomenon, and its production efficiency is higher.
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and specific implementation
The utility model is described in further detail for mode.
Referring to FIG. 1, Fig. 1 is the structure section view of current transformer provided by a kind of specific embodiment of the utility model
Figure.
In a specific embodiment, current transformer provided by the utility model, the shielding part 11 including fastening adaptation
With shell 12, assembly cavity 121 is formed between shielding part 11 and shell 12, protruding upward be provided in the middle part of shielding part 11 is located at assembly
Stem 111 in chamber 121, the bottom periphery portion of stem 111, which is arranged with, is bonded the coil 13 being adapted to, line with the top surface of shielding part 11
The pouring basin 112 that can accommodate castable is formed between the inner ring surface of circle 13 and the outer peripheral surface of stem 111, is coated on the outer wall of coil 13
There are breathable films, hot melt adhesive layer is coated on the two sides of the breathable films.
It assembles in use process, coil 13 is sheathed on 111 external juxtaposition of stem on shielding part 11, utilizes constant temperature later
The Equipments for Heating Processing such as drying box make the hot melt adhesive layer on breathable films two sides, and moderately softening restores viscosity, by coil 13 and screen
The sufficiently fitting of shield 11 is bonded, and the gas generated in bonding process can be discharged via the aperture on breathable films, reliably be bonded
Component after bonding is cooled to room temperature by Bi Hou, so that above-mentioned hot melt adhesive layer solidifies sizing again, is later again injected castable
In pouring basin 112, after material feeding to be poured cooling and solidifying by shell 12 be sheathed on stem 111 and coil 13 outside and with shielding part 11
Contraposition fastens the assembling that the current transformer can be completed.Entire operation process is simple and easy to do, and using coated with hot melt adhesive
The breathable films of layer will reliably be adhesively fixed between the equal related matching piece of coil 13 and shielding part 11, and match coil 13 is associated therewith
Cooperation gap between component is effectively closed, thus the material leakage phenomenon that may occur during effectively preventing subsequent pouring practice,
And then no longer need to clear up the coil 13 after material leakage again, significantly improve the assembling production effect of the current transformer
Rate, and improve its product structure intensity and the quality of production.
Further, it is bonded between the bottom surface of coil 13 and the top surface of shielding part 11 and is provided with annular sponge rubber strip 14.
The annular sponge rubber strip 14 can further increase the structure airtightness between coil 13 and the equal related matching piece of shielding part 11, with
The generation of material leakage phenomenon is further avoided, and a degree of structure buffering can be provided for coil 13 and its related matching piece,
Phenomena such as associated component damage caused by avoiding the structure quake in equipment running process or impacting.
More specifically, coil 13 at least two, each coil 13 is successively arranged along the axial direction of stem 111, and adjacent two line
Fitting is provided with annular sponge rubber strip 14 between circle 13.It is acted on similarly with previously described annular sponge rubber strip 14, this
Structure buffering can be provided for adjacent coil 13 by locating each annular sponge rubber strip 14, and keep the structure between adjacent windings 13 closed
Property correspondinglys increase.
On the other hand, the peripheral part of shell 12 is provided with boss 122, convex by sequentially passing through between shell 12 and shielding part 11
The bolt 15 of 11 outer rim of platform 122 and shielding part is fastened.This kind of 15 fastening structure of bolt be dismounted easily and to assemble intensity higher,
It can fully ensure that the assembly reliability of the electric power mutual-inductor, meanwhile, using the boss 122 as directly suitable with bolt 15
Distribution structure can effectively avoid interference and influence of the related assembling structure of bolt 15 on 11 main structure of shell 12 and shielding part,
Guarantee the basic function and structural strength of shell 12 and shielding part 11.
In addition, the above-mentioned breathable films coated with hot melt adhesive layer are double water chestnut dispensing films.Certainly, double water chestnut dispensing films are only
For preferred embodiment, in practical application it is also an option that other kinds of dispensing film or other have the film of double-sided adhesive function
Part replaces double water chestnut dispensing films described above, in principle, as long as can satisfy the actual use of the current transformer needs
It will.
This programme for ease of understanding now grasps the manufacture of this programme coil 13 for using above-mentioned double water chestnut dispensing films
Make process work to be suitably described as follows:
First it will be wound in iron core outer wall with slim two layers of cotton strip half-stack package after iron core deburring, later with double water chestnut dispensing films
It is used again outside slim cotton strip layer two layers of coiling of half lap packet mode, then with enameled wire in the outside of above-mentioned double water chestnut dispensing films
Continue coiling, wherein, need to be in the double water chestnut dispensing films of adjacent enameled wire interlayer if the coiling number of plies of enameled wire is more than 1 layer
Carry out again two layers of half lap wrapping, to above-mentioned enameled wire coiling after, with one layer of wrapping of double water chestnut dispensing film half laps, later
It is further continued for using white one layer of wrapping of PVC tape half lap, finally with double two layers of wrapping of water chestnut dispensing film half lap finally by line
Enclose 13 coiling machine-shapings.
Furthermore it should be noted that the both ends after the completion of 13 coiling of coil are drawn with pressure-resistant flexible cord, and the length of the lead-out wire
Degree is not less than 1600mm, to form 13 finished product of coil for meeting subsequent technique and equipment use needs.
In summary, the current transformer provided in the utility model assembles in use process, coil is sheathed on core
Column external juxtaposition fills breathable films by coil and shielding part using Equipments for Heating Processing such as thermostatic drying chambers later on shielding part
Divide fitting bonding, reliably after bonding, be cooled to room temperature, later again by castable injection pouring basin, material feeding to be poured is cooling
Shell, which is sheathed on the outside of stem and coil and is fastened with shielding part contraposition, after solidification can be completed the current transformer
Assembling.Entire operation process is simple and easy to do, and will be reliably bonded between coil matching piece related to shielding part etc. using breathable films
It is fixed, and the cooperation gap between coil matching piece associated therewith is effectively closed, to effectively prevent subsequent pouring practice
The material leakage phenomenon that may occur in journey, and then no longer need to clear up the coil after material leakage again, significantly improve the electricity
The assembling production efficiency of current transformer, and improve its product structure intensity and the quality of production.
Current transformer provided by the utility model is described in detail above.Specific case used herein
The principles of the present invention and embodiment are expounded, the above embodiments are only used to help understand, and this is practical
Novel method and its core concept.It should be pointed out that for those skilled in the art, not departing from this reality
Under the premise of with new principle, several improvements and modifications can be made to this utility model, these improvement and modification are also fallen into
In the protection scope of the utility model claims.
Claims (6)
1. a kind of current transformer, it is characterised in that: shielding part and shell including fastening adaptation, the shielding part and the shell
Assembly cavity, the middle part of the shielding part stem protruding upward being provided in the assembly cavity, the stem are formed between body
Bottom periphery portion be arranged with and be bonded the coil that be adapted to the top surface of shielding part, the inner ring surface of the coil and the stem outside
The pouring basin that can accommodate castable is formed between circumferential surface, is coated with breathable films on the outer wall of the coil, the breathable films
Hot melt adhesive layer is coated on two sides.
2. current transformer as described in claim 1, it is characterised in that: the top surface of the bottom surface of the coil and the shielding part
Between fitting be provided with annular sponge rubber strip.
3. current transformer as claimed in claim 2, it is characterised in that: the coil at least two, each coil edge
The axial direction of the stem is successively arranged, and fitting is provided with the annular sponge rubber strip between adjacent two coil.
4. current transformer as described in claim 1, it is characterised in that: the peripheral part of the shell is provided with boss, described
It is fastened between shell and the shielding part by sequentially passing through the bolt of the boss and the shielding part outer rim.
5. current transformer as described in claim 1, it is characterised in that: the breathable films are that half-stack package is wound in the line
On the outer wall of circle.
6. current transformer as described in claim 1, it is characterised in that: the breathable films coated with hot melt adhesive layer are double
Water chestnut dispensing film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822198306.9U CN209087551U (en) | 2018-12-26 | 2018-12-26 | A kind of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822198306.9U CN209087551U (en) | 2018-12-26 | 2018-12-26 | A kind of current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209087551U true CN209087551U (en) | 2019-07-09 |
Family
ID=67127430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822198306.9U Active CN209087551U (en) | 2018-12-26 | 2018-12-26 | A kind of current transformer |
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| Country | Link |
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| CN (1) | CN209087551U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586571A (en) * | 2021-07-16 | 2021-11-02 | 麦格磁电科技（珠海）有限公司 | NFC antenna assembling method and equipment |
-
2018
- 2018-12-26 CN CN201822198306.9U patent/CN209087551U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586571A (en) * | 2021-07-16 | 2021-11-02 | 麦格磁电科技（珠海）有限公司 | NFC antenna assembling method and equipment |
| CN113586571B (en) * | 2021-07-16 | 2022-11-01 | 麦格磁电科技（珠海）有限公司 | NFC antenna assembling method and equipment |
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