CN209657980U - A kind of current detecting mutual inductor of anti-strong magnetic field circumstance interference - Google Patents
A kind of current detecting mutual inductor of anti-strong magnetic field circumstance interference Download PDFInfo
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- CN209657980U CN209657980U CN201920800897.4U CN201920800897U CN209657980U CN 209657980 U CN209657980 U CN 209657980U CN 201920800897 U CN201920800897 U CN 201920800897U CN 209657980 U CN209657980 U CN 209657980U
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- conducting magnet
- mutual inductor
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Abstract
A kind of current detecting mutual inductor of anti-strong magnetic field circumstance interference, belongs to current transformer technical field.It is characterized by comprising the first conducting magnet core (10) being disposed side by side in the first mutual inductor ontology (1) and the second mutual inductor ontology (2) and the second conducting magnet cores (11), the edge horizontal registration of first conducting magnet core (10) and the second conducting magnet core (11) forms coincidence part (3), and it is wound with induction coil respectively on the section to coincide, two groups of induction coils are around to identical with the number of turns, two groups of induction coil head and the tail, which are staggeredly shorted, forms two short circuit points, and two are shorted point and draw respectively from the side of coincidence part (3).In the current detecting mutual inductor of this anti-strong magnetic field circumstance interference, by setting around to two groups of induction coils identical with the number of turns, the interference signal that extraneous interference magnetic field incudes formation in two groups of induction coils is cancelled out each other in the short junction of induction coil, to remove the interference of external magnetic field, the accuracy of output signal ensure that.
Description
Technical field
A kind of current detecting mutual inductor of anti-strong magnetic field circumstance interference, belongs to current transformer technical field.
Background technique
Current transformer is a kind of common electrical component, is widely used in power supply system to measuring instrumentss and protection
Device provides current signal, and the effect of current transformer is the small electricity that the high current of primary circuit is become to secondary circuit standard
Stream standardizes measuring instrumentss and protective device, miniaturization, and has the advantages that light structure, cheap.
With the increase of power equipment load, the power monitoring requirement of associate power equipment is higher and higher, and power equipment
Surrounding has stronger magnetic field, and ordinary electric current mutual-inductor anti-interference ability is weak, be easy to cause measurement error.In the prior art,
In order to increase the anti-interference ability of current transformer, generally by the way of additional shielded layer, however increase the mode of shielded layer
It will increase the complexity of current transformer, increased production cost, and under strong magnetic field circumstance, shielded layer can generate higher whirlpool
Flow heat, Yi Yinqi security risk.
Summary of the invention
Technical problem to be solved by the utility model is: overcome the deficiencies of the prior art and provide it is a kind of by setting around to
Two groups of induction coils identical with the number of turns, the interference signal that extraneous interference magnetic field incudes formation in two groups of induction coils are being felt
It answers the short junction of coil to cancel out each other, so that the interference of external magnetic field be removed, ensure that the anti-strong of output signal accuracy
The current detecting mutual inductor of magnetic field environment interference.
The technical scheme adopted by the utility model to solve the technical problem is as follows: the electric current inspection of the anti-strong magnetic field circumstance interference
Survey mutual inductor, it is characterised in that: including the first mutual inductor ontology and the second mutual inductor ontology arranged side by side, in the first mutual inductor
It is respectively arranged with the first conducting magnet core and the second conducting magnet core in ontology and the second mutual inductor ontology, is tested cable from the first magnetic conduction
Iron core or the second conducting magnet core center pass through；The edge of first conducting magnet core and the second conducting magnet core forms coincidence part, first
Be wound with induction coil on the section that conducting magnet core and the second conducting magnet core coincide respectively, two groups of induction coils around to and the number of turns
Identical, two groups of induction coil head and the tail, which are staggeredly shorted, forms two short circuit points, and two are shorted point and draw respectively from the side of coincidence part.
Preferably, it is enclosed with shell respectively in the outside of first conducting magnet core and the second conducting magnet core.
Preferably, the lower edge of first conducting magnet core is overlapped with the upper edge of the second conducting magnet core, and in the first magnetic conduction iron
The lower edge of core is wound with the first induction coil and the second induction coil along upper on the second conducting magnet core respectively.
Preferably, two terminals that the same side is located in first induction coil and the second induction coil are respectively the
One coil the end of a thread and second coil the end of a thread, two terminals positioned at the other side are respectively First Line astragal tail and the second coil line
Tail, first coil the end of a thread and the second coil line tail are shorted, and First Line astragal tail and second coil the end of a thread are shorted to form two short circuits
Point.
Preferably, the side of the coincidence part is provided with output line, two short circuit points are respectively through in output line
Two leads draw.
Preferably, shell is enclosed in the outside of the coincidence part.
Preferably, be respectively formed at the center of first conducting magnet core and the second conducting magnet core the first core window and
Second core window, tested cable are passed through from the first core window or the second core window.
Preferably, first core window and the second core window are located at the two sides up and down of coincidence part.
Compared with prior art, beneficial effect possessed by the utility model is:
1, in the current detecting mutual inductor of this anti-strong magnetic field circumstance interference, by being arranged around to two groups identical with the number of turns
Induction coil, extraneous interference magnetic field incude short junction of the interference signal in induction coil of formation in two groups of induction coils
It cancels out each other, so that the interference of external magnetic field be removed, ensure that the accuracy of output signal.
2, the interference that external high-intensity magnetic field is eliminated in such a way that interference signal is cancelled out each other compares and is arranged in the prior art
The mode of shielded layer simplifies the structure of mutual inductor, reduces product cost.
3, it due to eliminating the interference under strong magnetic field circumstance, avoids and generates in shielded layer compared with high-eddy heat
Defect eliminates security risk.
Detailed description of the invention
Fig. 1 is the current detecting mutual inductor front view of anti-strong magnetic field circumstance interference.
Fig. 2 is the current detecting mutual inductor left view of anti-strong magnetic field circumstance interference.
Fig. 3 is A-A sectional view in Fig. 2.
Fig. 4 is the current detecting mutual inductor coil line schematic diagram of anti-strong magnetic field circumstance interference.
Fig. 5 is the current detecting mutual inductor front view of the anti-strong magnetic field circumstance of embodiment 2 interference.
Fig. 6 is the current detecting mutual inductor left view of the anti-strong magnetic field circumstance of embodiment 2 interference.
Fig. 7 is B-B sectional view in 2 Fig. 6 of embodiment.
Fig. 8 is the current detecting mutual inductor coil line schematic diagram of the anti-strong magnetic field circumstance of embodiment 2 interference.
Wherein: 1, the first mutual inductor ontology 2, the second mutual inductor ontology 3, coincidence part 4, output line 5, the first iron
Core window 6, the second core window 7, the second induction coil 701, second coil the end of a thread 702, the second coil line tail
8, the first induction coil 801, first coil the end of a thread 802, First Line astragal tail 9, shell 10, the first conducting magnet core
11, the second conducting magnet core.
Specific embodiment
Fig. 1 ~ 4 are the most preferred embodiments of the utility model, and 1 ~ 8 pair of the utility model is done furtherly with reference to the accompanying drawing
It is bright.
Embodiment 1:
As shown in Fig. 1 ~ 3, a kind of current detecting mutual inductor of anti-strong magnetic field circumstance interference, first including fixing side by side is mutual
Sensor ontology 1 and the second mutual inductor ontology 2 are respectively arranged with first in the first mutual inductor ontology 1 and the second mutual inductor ontology 2
Conducting magnet core 10 and the second conducting magnet core 11 are enclosed with outer respectively in the outside of the first conducting magnet core 10 and the second conducting magnet core 11
Shell 9.First conducting magnet core 10 and the second conducting magnet core 11 are the closing structure of rectangle, therefore in the first conducting magnet core 10 and
The middle part of two conducting magnet cores 11 is respectively formed the first core window 5 and the second core window 6.
In the current detecting mutual inductor of this anti-strong magnetic field circumstance interference, the first conducting magnet core 10 and the second conducting magnet core 11
It is staggered in the horizontal direction, wherein the lower edge of the first conducting magnet core 10 and the upper edge of the second conducting magnet core 11 are disposed side by side on
Same level, therefore the upper edge of the lower edge of the first conducting magnet core 10, the second conducting magnet core 11 is successively wrapped in the outer of its outside
Shell 9 collectively constitutes the coincidence part 3 in the middle part of the current detecting mutual inductor that this anti-strong magnetic field circumstance interferes, the first conducting magnet core 10
The second core window 6 at 11 center of the first core window 5 and the second conducting magnet core at center is respectively upper with coincidence part 3
Lower two sides.
The first induction coil 8 is wound on the section of 10 lower edge of the first conducting magnet core, the edge on the second conducting magnet core 11
Section be wound around the second induction coil 7, it can be seen from the above, due to the lower edge and the second conducting magnet core of the first conducting magnet core 10
11 upper edge is located side by side in coincidence part 3, thus the first induction coil 8 and the second induction coil 7 simultaneously in coincidence part 3 side by side
Setting.
Referring to Fig. 4, winding direction of first induction coil 8 on the first conducting magnet core 10 and the second induction coil 7 are the
Winding direction on two conducting magnet cores 11 is identical, and the winding the number of turns of the first induction coil 8 on the first conducting magnet core 10 and the
The winding the number of turns of two induction coils 7 on the second conducting magnet core 11 is also identical.
First induction coil 8 is respectively formed two terminals at the both ends of the first conducting magnet core 10, and the second induction coil 7 exists
The both ends of second conducting magnet core 11 are equally respectively formed two terminals, are located in the first induction coil 8 and the second induction coil 7
Two terminals of the same side are respectively first coil the end of a thread 801 and second coil the end of a thread 701, the first induction coil 8 and second
Two terminals in induction coil 7 positioned at the other side are respectively First Line astragal tail 802 and the second coil line tail 702, wherein
First coil the end of a thread 801 and the second coil line tail 702, which are shorted, forms a public output, First Line astragal tail 802 and second
The short circuit of coil the end of a thread 701 forms another public output, and two public outputs are drawn respectively by two leads in output line 4
Out, output line 4 is located at one end of coincidence part 3.
Specific work process and working principle are as follows:
When measuring, tested cable is passed through from the first core window 5 or the second core window 6, with from first
It is described in detail for being passed through in core window 5, after tested cable is passed through from the first core window 5, in the first magnetic conduction
Magnetic flux in iron core 10 includes magnetic flux caused by the magnetic flux that tested electric current generates and external interference magnetic field, and in the second magnetic conduction
Since not tested cable passes through in iron core 11, only comprising caused by external interference magnetic field in the second conducting magnet core 11
Magnetic flux.And external interference magnetic field is consistent with generated magnetic flux in the second conducting magnet core 11 in the first conducting magnet core 10.
Since the first induction coil 8 and the second induction coil 7 are around to identical with the number of turns, external interference magnetic field is
One induction coil 8 is consistent with interference signal size and Orientation caused by the second induction coil 7, due to first coil the end of a thread 801
It is shorted with the second coil line tail 702, First Line astragal tail 802 and second coil the end of a thread 701 are shorted, therefore interference signal is first
The short junction of induction coil 8 and the second induction coil 7 is cancelled out each other, therefore the signal exported by output line 4 only remains tested electricity
The raw inductive signal of miscarriage ensure that the accuracy of output signal so that the interference of external magnetic field be removed.
Embodiment 2:
As shown in Fig. 5 ~ 8, the present embodiment the difference from embodiment 1 is that: in embodiment itself, the first mutual inductor ontology
1 and second mutual inductor ontology 2 set gradually in the vertical direction, the lower edge of the first induction coil 8 and the second induction coil 7 it is upper
Edge is overlapped in the vertical direction, and coincidence part 3 is formed between the first mutual inductor ontology 1 and the second mutual inductor ontology 2, the first sense
Coil 8 and the second induction coil 7 is answered to be respectively wound around the lower edge of the first induction coil 8 and the upper edge of the second induction coil 7, first
The winding of induction coil 8 and the second induction coil 7 is shorted mode and working principle is same as Example 1, no longer superfluous herein
It states.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation.But it is all without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real
Matter any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the guarantor of technical solutions of the utility model
Protect range.
Claims (8)
1. a kind of current detecting mutual inductor of anti-strong magnetic field circumstance interference, it is characterised in that: including the first mutual inductance arranged side by side
Device ontology (1) and the second mutual inductor ontology (2) are respectively set in the first mutual inductor ontology (1) and the second mutual inductor ontology (2)
There are the first conducting magnet core (10) and the second conducting magnet core (11), is tested cable from the first conducting magnet core (10) or the second conducting magnet core
(11) center passes through；The edge of first conducting magnet core (10) and the second conducting magnet core (11) forms coincidence part (3), in the first magnetic conduction
Be wound with induction coil on the section that iron core (10) and the second conducting magnet core (11) coincide respectively, two groups of induction coils around to
The number of turns is identical, and two groups of induction coil head and the tail are staggeredly shorted and form two short circuit points, and two short circuit points are respectively from the side of coincidence part (3)
It draws in portion.
2. the current detecting mutual inductor of anti-strong magnetic field circumstance interference according to claim 1, it is characterised in that: described
The outside of first conducting magnet core (10) and the second conducting magnet core (11) is enclosed with shell (9) respectively.
3. the current detecting mutual inductor of anti-strong magnetic field circumstance interference according to claim 1 or 2, it is characterised in that: described
The lower edge of first conducting magnet core (10) is overlapped with the upper edge of the second conducting magnet core (11), and the lower edge in the first conducting magnet core (10)
It is wound with the first induction coil (8) and the second induction coil (7) respectively along upper on the second conducting magnet core (11).
4. the current detecting mutual inductor of anti-strong magnetic field circumstance interference according to claim 3, it is characterised in that: described first
In induction coil (8) and the second induction coil (7) positioned at the same side two terminals be respectively first coil the end of a thread (801) and
Second coil the end of a thread (701), two terminals positioned at the other side are respectively First Line astragal tail (802) and the second coil line tail
(702), first coil the end of a thread (801) and the second coil line tail (702) are shorted, First Line astragal tail (802) and the second coil line
Head (701), which is shorted, forms two short circuit points.
5. the current detecting mutual inductor of anti-strong magnetic field circumstance interference according to claim 1, it is characterised in that: described heavy
The side in conjunction portion (3) is provided with output line (4), and described two are shorted point and draw respectively through two leads in output line (4).
6. the current detecting mutual inductor of anti-strong magnetic field circumstance interference according to claim 1, it is characterised in that: described heavy
The outside in conjunction portion (3) is enclosed with shell (9).
7. the current detecting mutual inductor of anti-strong magnetic field circumstance interference according to claim 1, it is characterised in that: described the
The first core window (5) and the second core window are respectively formed at the center of one conducting magnet core (10) and the second conducting magnet core (11)
(6), cable is tested to pass through from the first core window (5) or the second core window (6).
8. the current detecting mutual inductor of anti-strong magnetic field circumstance interference according to claim 7, it is characterised in that: described the
One core window (5) and the second core window (6) are located at the two sides up and down of coincidence part (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920800897.4U CN209657980U (en) | 2019-05-30 | 2019-05-30 | A kind of current detecting mutual inductor of anti-strong magnetic field circumstance interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920800897.4U CN209657980U (en) | 2019-05-30 | 2019-05-30 | A kind of current detecting mutual inductor of anti-strong magnetic field circumstance interference |
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| Publication Number | Publication Date |
|---|---|
| CN209657980U true CN209657980U (en) | 2019-11-19 |
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ID=68530685
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920800897.4U Expired - Fee Related CN209657980U (en) | 2019-05-30 | 2019-05-30 | A kind of current detecting mutual inductor of anti-strong magnetic field circumstance interference |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157775A (en) * | 2019-11-20 | 2020-05-15 | 江苏轶一电力科技有限公司 | Double-coil current sensor |
| CN113283255A (en) * | 2021-05-17 | 2021-08-20 | 盛视科技股份有限公司 | Card reading coil winding method, card reading device and card reading system |
| CN113985106A (en) * | 2021-10-28 | 2022-01-28 | 贵州鑫湄纳米科技有限公司 | Direct current mutual inductance sensor |
| CN113985106B (en) * | 2021-10-28 | 2024-06-28 | 贵州鑫湄纳米科技有限公司 | Direct current mutual inductance sensor |
-
2019
- 2019-05-30 CN CN201920800897.4U patent/CN209657980U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157775A (en) * | 2019-11-20 | 2020-05-15 | 江苏轶一电力科技有限公司 | Double-coil current sensor |
| CN113283255A (en) * | 2021-05-17 | 2021-08-20 | 盛视科技股份有限公司 | Card reading coil winding method, card reading device and card reading system |
| CN113283255B (en) * | 2021-05-17 | 2024-04-02 | 盛视科技股份有限公司 | Card reading coil winding method, card reading device and card reading system |
| CN113985106A (en) * | 2021-10-28 | 2022-01-28 | 贵州鑫湄纳米科技有限公司 | Direct current mutual inductance sensor |
| CN113985106B (en) * | 2021-10-28 | 2024-06-28 | 贵州鑫湄纳米科技有限公司 | Direct current mutual inductance sensor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191119 |