CN209087550U - A kind of resistance to rapid transition mutual inductor - Google Patents
A kind of resistance to rapid transition mutual inductor Download PDFInfo
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- CN209087550U CN209087550U CN201822171561.4U CN201822171561U CN209087550U CN 209087550 U CN209087550 U CN 209087550U CN 201822171561 U CN201822171561 U CN 201822171561U CN 209087550 U CN209087550 U CN 209087550U
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- 230000007704 transition Effects 0.000 title claims abstract description 29
- 238000004804 winding Methods 0.000 claims abstract description 166
- 238000005192 partition Methods 0.000 claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 35
- 238000010586 diagram Methods 0.000 description 12
- 230000001052 transient effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Abstract
The utility model discloses a kind of resistance to rapid transition mutual inductors.The mutual inductor includes: winding bobbin, shielded partitions, first winding, secondary winding and iron core；Winding bobbin includes winding section and leading part；Winding section is the hollow structure with both ends open；The open-ended of winding section extends leading part around；Shielded partitions separate winding section, form the first winding section and the second winding section；The outside of first winding section winds first winding, and the outside of the second winding section winds secondary winding；Iron core is set in outside winding bobbin along the vertical direction.The utility model can greatly improve the resistance to rapid transition interference performance of mutual inductor, and easy to operate, low manufacture cost.
Description
Technical field
The utility model relates to technical field of mutual inductor manufacture, more particularly to a kind of resistance to rapid transition mutual inductor.
Background technique
Mutual inductor is also known as instrument transformer, is the general designation of current transformer (CT) and voltage transformer (PT), can incite somebody to action
High voltage becomes low-voltage, high current becomes low current, for measuring or protecting system.Resistance to rapid transient capability is to examine mutual inductance
One important indicator of device performance.In circuit, such as carrying out adaptive switched transient process, (lightning connects electric fault and cutting inductive load
The ringing Deng caused by), it will usually interference is generated to other Electrical and Electronic equipment in same circuit.Transformer test is anti-
Fast transient be exactly examine mutual inductor be mixed into the AC signal normally inputted the amplitude of a transition, the short rise time,
One pulse-burst signals of high-repetition-rate and low energy, the influence size to output signal, under normal circumstances, mutual inductor output
Sinusoidal signal waveform is normal, and spike, burr are fewer, indicates that mutual inductor resistance to rapid transient capability is stronger.
Currently, usually winding secondary winding outside winding bobbin for current transformer, shielding is set outside secondary winding
Layer, winds first winding, for voltage transformer, structure is followed successively by first winding, shielded layer from inside to outside outside shielded layer
And secondary winding, it is seen then that the first winding and secondary winding of existing mutual inductor are coupled, and result in mutual inductance in this way
The resistance to transient disturbance of device is poor.The existing resistance to transient disturbance in order to improve mutual inductor, by being exported in mutual inductor
Matrix type is changed to annular by shunt capacitance between end shunt capacitance or input and shielding, or single-layer shield is changed to Double-layer widened
Shielding, but these measures all cannot largely reduce fast transient spike, and these measures may be by mutual inductor
The limitation of energy, size and process costs, does not meet batch making.
Summary of the invention
Based on this, it is necessary to a kind of resistance to rapid transition mutual inductor is provided, it is dry with the resistance to rapid transition for greatly improving mutual inductor
Disturb ability, and easy to operate, low manufacture cost.
To achieve the above object, the utility model provides following scheme:
A kind of resistance to rapid transition mutual inductor, comprising: winding bobbin, shielded partitions, shielding, first winding, secondary winding and
Iron core；
The winding bobbin includes winding section and leading part；The winding section is the hollow structure with both ends open；Institute
It states the open-ended of winding section and extends the leading part around；The shielded partitions separate the winding section, form the
One winding section and the second winding section；The outside of first winding section winds the first winding, second winding section it is outer
Side winds the secondary winding；The iron core is set in along the vertical direction outside the winding bobbin.
Optionally, the upper surface for exposing to the shielded partitions part of the winding section outer wall is provided with baffle shield layer.
Optionally, winding shielded layer is additionally provided on the outside of the first winding or the secondary winding.
Optionally, the leading part includes a leading part and lead portion；The upper end opening of the winding section to top or
Extend a leading part in side；Leading part is used to draw the lead-out wire of first winding；The winding section
Lower ending opening extends the lead portion around；The lead portion is used to drawing the lead-out wire of first winding, secondary winding
The lead-out wire of lead-out wire, the lead-out wire of the baffle shield layer and the winding shielded layer, or for drawing drawing for secondary winding
Outlet, the lead-out wire of the baffle shield layer and the winding shielded layer lead-out wire.
Optionally, crossed beam trunking is provided in the lead portion；The crossed beam trunking is used for cabling.
Compared with prior art, the utility model has the beneficial effects that
The utility model proposes a kind of resistance to rapid transition mutual inductors, comprising: winding bobbin, shielded partitions, first winding,
Secondary winding and iron core；Winding bobbin includes winding section and leading part；Winding section is the hollow structure with both ends open；Coiling
The open-ended of portion extends leading part around；Shielded partitions in the horizontal direction separate winding section, form the first winding section
With the second winding section；Winding section, leading part and shielded partitions pour integrated molding；First winding section outside winding once around
The outside of group, the second winding section winds secondary winding；Iron core is set in outside winding bobbin along the vertical direction.The utility model passes through
Setting shielded partitions keep apart first winding and secondary winding, significantly improve the resistance to rapid transition interference performance of mutual inductor,
And easy to operate, low manufacture cost.
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
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model embodiment resistance to rapid transition mutual inductor；
Fig. 2 is the structural schematic diagram that the utility model embodiment adds the resistance to rapid transition mutual inductor after winding shielded layer；
Fig. 3 is the structural schematic diagram of the utility model embodiment winding bobbin；
Fig. 4 is the structural schematic diagram that the utility model embodiment adds the winding bobbin after baffle shield layer；
Fig. 5 is the structural schematic diagram of the utility model embodiment second pin；
Fig. 6 is the equivalent circuit diagram of the utility model embodiment resistance to rapid transition mutual inductor.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Fig. 1 is the structural schematic diagram of the utility model embodiment resistance to rapid transition mutual inductor；Fig. 2 is the utility model implementation
Example adds the structural schematic diagram of the resistance to rapid transition mutual inductor after winding shielded layer；Fig. 3 is the utility model embodiment coiling bone
The structural schematic diagram of frame；Fig. 4 is the structural schematic diagram that the utility model embodiment adds the winding bobbin after baffle shield layer.
Referring to Fig. 1-4, the resistance to rapid transition mutual inductor of embodiment, comprising: winding bobbin, shielded partitions 1, first winding 2,
Secondary winding 3, iron core 4, baffle shield layer 5 and winding shielded layer 15；The winding bobbin includes winding section and leading part；It is described
Winding section is the hollow structure with both ends open；The open-ended of the winding section extends the leading part around；Institute
It states shielded partitions 1 to separate the winding section, forms the first winding section 6 and the second winding section 7；Outside first winding section 6
Side winds the first winding 2, and the outside of second winding section 7 winds the secondary winding 3；The iron core 4 is along vertical side
To being set in outside the winding bobbin；The upper surface for exposing to the shielded partitions part of the winding section outer wall is provided with partition screen
Layer 5 (as shown in Figure 4) is covered, to further enhance the function of shielding of the shielded partitions, so that mutual inductor resistance to rapid transition is interfered
Ability is stronger；In the present embodiment, for current transformer, the winding shielded layer is arranged in the outside of the secondary winding 3
15 (as shown in Figure 2), for voltage transformer, the shielded layer 5 is arranged in the outside of the first winding 2.
The leading part includes a leading part 8 and lead portion 9；The upper end opening of the winding section is prolonged to top or side
Stretch out a leading part 8；Leading part 8 is used to draw the lead-out wire of first winding 2；The lower end of the winding section
Opening extends the lead portion 9 around；The lead portion 9 is used to drawing the lead-out wire of first winding 2, secondary winding 3
The lead-out wire of lead-out wire, the lead-out wire of the baffle shield layer 5 and the winding shielded layer 15, or for drawing secondary winding 3
Lead-out wire, the lead-out wire of the baffle shield layer 5 and the lead-out wire of the winding shielded layer 15；It is arranged in the lead portion 9
There is crossed beam trunking 10；The crossed beam trunking 10 is used for cabling.
Specifically, in practical applications, a leading part 8 can select to be arranged according to demand, when user only needs
When side lead (for example, lower end of winding section), it can be not provided with a leading part 8, lead portion 9 is only set, at this point, pin
Portion 9 is used to draw the lead-out wire of first winding 2, the lead-out wire of secondary winding 3, the lead-out wire of the baffle shield layer 5 and described
The lead-out wire of winding shielded layer 15；When user needs the upper and lower ends lead simultaneously in winding section, at this point, the upper end of winding section
It being open and extends a leading part 8 to top or side, a leading part 8 is used to draw the lead-out wire of first winding 2, around
The lower ending opening in line portion extends the lead portion 9 around, and the lead portion 9 is used to draw lead-out wire, the institute of secondary winding 3
State the lead-out wire of baffle shield layer 5 and the lead-out wire of the winding shielded layer 15.
The side of leading part 8 is opened up there are two card slot 11, and the card slot 11 is used to that the first pin 12 to be arranged；Institute
The other side for stating a leading part 8 offers resistance placing groove 13, and the resistance placing groove 13 is for placing secondary resistance；It is described
Seven second pins 14 are provided in lead portion 9, Fig. 5 is the structural schematic diagram of the utility model embodiment second pin, referring to
Fig. 5, wherein three second pins 14 (stitch a, b, c) are located at the side of the lead portion 9, four additional second pin 14 (d,
E, f, g) be located at the lead portion 9 the other side；When user only needs to draw at side lead (for example, lower end of winding section)
Foot 9 is for drawing the lead-out wire of first winding 2, the lead-out wire of secondary winding 3, the lead-out wire of the baffle shield layer 5 and institute
State the lead-out wire of winding shielded layer 15；When user needs the upper and lower ends lead simultaneously in winding section, first pin 12
For drawing the lead-out wire of first winding 2, the second pin 14 is used to draw lead-out wire, the partition screen of secondary winding 3
The lead-out wire of layer 5 and the lead-out wire of the winding shielded layer 15 are covered, the lead-out wire of the secondary resistance draws also by described second
Foot 14 is drawn, specifically, stitch a, b are empty needle, the extraction of the lead-out wire of the baffle shield layer 5, the winding shielded layer 15
Line is welded to stitch c, and the lead-out wire that the secondary winding 3 connects is welded to stitch d/ stitch e and stitch f/ stitch g, and described time
The lead-out wire of grade resistance is welded to stitch d/ stitch e.
In the present embodiment, the position of shielded partitions 1 be it is adjustable, i.e. the region of the first winding section 6 and the second winding section 7 is big
Small is adjustable.For current transformer, the number of turns of first winding 2 is generally seldom, and the number of turns of secondary winding 3 is far more than one
The number of turns of secondary winding 2, therefore the region of the first winding section 6 is less than the region of the second winding section 7, shielded partitions 1 are close to coiling
The top in portion；And voltage transformer just on the contrary, the number of turns of first winding 2 can far more than the number of turns of secondary winding 3, therefore
The region of one winding section 6 is greater than the region of the second winding section 7, lower part of the shielded partitions 1 close to winding section.The shielded partitions
1 thickness is generally in 0.5mm-4.5mm or so.
In the present embodiment, the material of winding bobbin is the plastic material with certain insulation (pressure resistance) flame retardant property, described
Winding section is rectangle, and the rectangular opening at center is completely through in order to be coupled secured core 4.
In the present embodiment, iron core 4 is equipped on winding bobbin, and the size of iron core 4 is according to properties of product and coiling
What the window of skeleton determined.The iron core 4 is generally EI silicon steel sheet, ED iron core or CD iron core, EI silicon steel sheet upper opening, annular iron
Core upper opening or rectangle iron core upper opening.
As an alternative embodiment, the shielded partitions 1 in the horizontal direction separate the winding section, the is formed
One winding section 6 and the second winding section 7.
As an alternative embodiment, the winding section, the leading part and the shielded partitions 1 pour one at
Type.
The principle of the resistance to rapid transition mutual inductor is as follows.
Fig. 6 is the equivalent circuit diagram of the utility model embodiment resistance to rapid transition mutual inductor.It is through no-load voltage ratio referring to Fig. 6, I1
The theoretical current of conversion, r1 are the D.C. resistance converted through no-load voltage ratio, and Lm1, Lm2 are respectively primary, secondary leakage inductance, XL bis- times
Excitation induction reactance, I0 are exciting current, and I2 is the electric current for flowing through load, and r2 is secondary coil D.C. resistance, and R is load resistance.Mutually
Sensor test resistance to rapid transition experiment is exactly to be mixed into a wink in the AC signal (frequency f=50Hz) that mutual inductor normally inputs
The amplitude of change, the short rise time, high-repetition-rate and low energy a pulse-burst signals, the pulse-burst signals frequency is very high
(generally several kHz to several hundred kHz), for routine transformer, due to, without partition, being between a secondary winding
It is directly coupled together, thus leakage inductance Lm very little, it can be neglected, after a secondary winding is separated by shielded partitions 1, leakage
Feel Lm can much larger (cannot ignore), by leakage inductance inductive reactance xl m=2 π fLm, leakage inductance Lm increase, and if the signal frequency that passes through leakage inductance
Certain amount grade is arrived greatly, and leakage inductance induction reactance can be very big, therefore can play the function of hindering high frequency signal transmission.
First winding and secondary winding are isolated by setting shielded partitions for resistance to rapid transition mutual inductor in the present embodiment
It opens, significantly improves the resistance to rapid transition interference performance of mutual inductor, and easy to operate, low manufacture cost；And it is shielded in setting
On the basis of partition, then it is additionally arranged one layer of shielded layer, further enhances mutual inductor resistance to rapid transition interference performance.
Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the method and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.In conclusion
The content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. a kind of resistance to rapid transition mutual inductor characterized by comprising winding bobbin, shielded partitions, first winding, it is secondary around
Group and iron core；
The winding bobbin includes winding section and leading part；The winding section is the hollow structure with both ends open；It is described around
The open-ended of line portion extends the leading part around；The shielded partitions separate the winding section, formed first around
Line portion and the second winding section；The outside of first winding section winds the first winding, twines on the outside of second winding section
Around the secondary winding；The iron core is set in along the vertical direction outside the winding bobbin.
2. a kind of resistance to rapid transition mutual inductor according to claim 1, which is characterized in that expose to the winding section outer wall
The upper surface of shielded partitions part be provided with baffle shield layer.
3. a kind of resistance to rapid transition mutual inductor according to claim 2, which is characterized in that the first winding or described two
Winding shielded layer is additionally provided on the outside of secondary winding.
4. a kind of resistance to rapid transition mutual inductor according to claim 3, which is characterized in that the leading part includes once drawing
Line portion and lead portion；The upper end opening of the winding section extends a leading part to top or side；It is described once to draw
Line portion is used to draw the lead-out wire of first winding；The lower ending opening of the winding section extends the lead portion around；It is described
Lead portion is used to draw the lead-out wire of first winding, the lead-out wire of secondary winding, the lead-out wire of the baffle shield layer and described
The lead-out wire of winding shielded layer, or lead-out wire, the baffle shield layer for drawing secondary winding lead-out wire and it is described around
The lead-out wire of group shielded layer.
5. a kind of resistance to rapid transition mutual inductor according to claim 4, which is characterized in that be provided in the lead portion
Wire casing；The crossed beam trunking is used for cabling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822171561.4U CN209087550U (en) | 2018-12-24 | 2018-12-24 | A kind of resistance to rapid transition mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822171561.4U CN209087550U (en) | 2018-12-24 | 2018-12-24 | A kind of resistance to rapid transition mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209087550U true CN209087550U (en) | 2019-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822171561.4U Withdrawn - After Issue CN209087550U (en) | 2018-12-24 | 2018-12-24 | A kind of resistance to rapid transition mutual inductor |
Country Status (1)
| Country | Link |
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| CN (1) | CN209087550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378193A (en) * | 2018-12-24 | 2019-02-22 | 南京江北自动化技术有限公司 | A kind of resistance to rapid transition mutual inductor |
| CN110690031A (en) * | 2019-10-16 | 2020-01-14 | 广东美的厨房电器制造有限公司 | Transformer framework, transformer and electric equipment |
-
2018
- 2018-12-24 CN CN201822171561.4U patent/CN209087550U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378193A (en) * | 2018-12-24 | 2019-02-22 | 南京江北自动化技术有限公司 | A kind of resistance to rapid transition mutual inductor |
| CN109378193B (en) * | 2018-12-24 | 2024-03-12 | 南京江北自动化技术有限公司 | Fast transient resistant transformer |
| CN110690031A (en) * | 2019-10-16 | 2020-01-14 | 广东美的厨房电器制造有限公司 | Transformer framework, transformer and electric equipment |
| WO2021073574A1 (en) * | 2019-10-16 | 2021-04-22 | 广东美的厨房电器制造有限公司 | Transformer framework, transformer and electrical equipment |
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Granted publication date: 20190709 Effective date of abandoning: 20240312 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190709 Effective date of abandoning: 20240312 |
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| AV01 | Patent right actively abandoned |