CN211088055U - Mutual inductance mechanism and protection device - Google Patents
Mutual inductance mechanism and protection device Download PDFInfo
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- CN211088055U CN211088055U CN201922017583.XU CN201922017583U CN211088055U CN 211088055 U CN211088055 U CN 211088055U CN 201922017583 U CN201922017583 U CN 201922017583U CN 211088055 U CN211088055 U CN 211088055U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 34
- 238000005192 partition Methods 0.000 claims abstract description 67
- 230000001681 protective effect Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000000696 magnetic material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The utility model is suitable for a mutual-inductor technical field especially relates to an mutual inductance mechanism and a protection device, and mutual-inductor mechanism includes: the mutual inductor is provided with a through hole; the partition plates are arranged in the through holes in a crossed manner and divide the through holes into a plurality of first limiting spaces, and the partition plates arranged in the crossed manner are provided with second limiting spaces in the centers of the through holes; the plurality of wires penetrate through the first limiting space; and the soft magnetic part is arranged in the second limiting space. When the mutual inductor works, even if the leakage current is small, the internal magnetic field is enhanced by magnetizing the soft magnetic part, so that the magnetic flux of the soft magnetic part is increased, the number of turns of the secondary side of the mutual inductor is unchanged, the magnetic flux is increased, the potential of the secondary side of the mutual inductor is increased, the output voltage range is enlarged, the detection is facilitated, more energy is provided for an external mechanism, and the precision and the stability of the mutual inductor are improved.
Description
Technical Field
The utility model is suitable for a mutual-inductor technical field especially relates to an mutual inductance mechanism and a protection device.
Background
The mutual inductor is also called instrument transformer, and is a general name of current mutual inductor and voltage mutual inductor. The high voltage can be changed into low voltage, and the large current can be changed into small current for measuring or protecting the system. The transformer is used in conjunction with relay protector, leakage protector or signal to make the elements of the device act and realize protection or monitoring.
The transformer is one of the core elements of the earth leakage protection device, and the characteristics of the transformer greatly influence the structure, sensitivity and economic benefit of the protection device. Since the leakage current has values of 10mA, 30mA and 100mA, the leakage current generates a magnetic field and generates an electromotive force through a closed coil of a plurality of turns of the transformer, thereby performing detection of the leakage current. Due to the accuracy limitations of detection, small electromotive forces are not easily detected and do not provide sufficient energy to external mechanisms. In order to ensure the reliability of a leakage product, the secondary electromotive force of the transformer is only increased, namely the electromotive force of the transformer on the side of the connected load side is increased, so that the performance of the product is improved.
The existing mutual inductor in the market only improves the efficiency of energy transfer by reducing the magnetic resistance in the mutual inductor so as to achieve the purposes of improving the electromotive force of the secondary side of the mutual inductor and improving the precision of products. However, the low-reluctance soft magnetic material has high production cost and poor stability due to technical reasons, so that the problems of precision and stability of the transformer are not fundamentally solved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a mutual inductance mechanism aims at solving current mutual-inductor and need use the soft magnetic material of the low magnetic resistance that the cost is expensive, just can improve the problem of vice limit electromotive force.
The utility model discloses a realize like this, provide an mutual inductance mechanism, mutual inductance mechanism includes: the mutual inductor is provided with a through hole; the partition plates are arranged in the through holes and are mutually crossed to divide the through holes into a plurality of first limiting spaces, and the partition plates which are mutually crossed are provided with second limiting spaces in the centers of the through holes; the plurality of wires penetrate through the first limiting space; and the soft magnetic part is arranged in the second limiting space.
Furthermore, the first limiting space and the wires are uniformly distributed relative to the center of the through hole.
Furthermore, the number of the partition plates is two, and the partition plates are perpendicular to each other, and the partition plates partition the through holes to form four first limiting spaces.
Furthermore, two sides of one of the partition boards are respectively provided with a limiting groove, the mutual inductor extends towards the inner side of the through hole and is provided with a bulge matched with the limiting groove, and bosses are correspondingly arranged on two sides of the other partition board.
Furthermore, one end of the limiting groove is fixedly provided with a limiting part.
Furthermore, at least one baffle extends towards its middle part and is provided with the fixed part, the soft magnetic component passes through the fixed part fixed setting in second spacing space.
Furthermore, the fixing part is a buckle which is formed by extending the partition plates towards the middle of the partition plates, one end of each soft magnetic part abuts against the buckle, and the other end of each soft magnetic part abuts against the cross position of each partition plate.
The utility model also provides a protection device, protection device includes as above mutual induction mechanism.
The beneficial effects of the utility model reside in that, compared with the prior art, the utility model discloses a design a mutual inductance mechanism, be equipped with the mutual-inductor, a separation plate, wire and soft magnetic member, soft magnetic member assembles the spacing space of second at the separation plate middle part, and the spacing space of second is in the through-hole center, at the mutual-inductor during operation, even leakage current is less, through magnetizing soft magnetic member, strengthen internal magnetic field, thereby the magnetic flux of soft magnetic member has been increased, because the secondary limit number of turns of mutual-inductor is unchangeable, the magnetic flux increases, make the potential increase on the secondary limit of mutual-inductor, enlarge the output voltage scope, be convenient for detect and provide more energy for external mechanism, improve the precision and the stability of mutual-inductor, and, the magnetic conductivity of soft magnetic member can be relatively lower, thereby reduction.
Drawings
Fig. 1 is a first schematic diagram of a transformer mechanism provided by the present invention;
fig. 2 is a second schematic view of the mechanism of the present invention;
fig. 3 is a third schematic view of the mechanism of the present invention;
FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 3;
fig. 5 is a schematic diagram of the two partition plates provided by the present invention;
fig. 6 is a schematic diagram of a transformer provided by the present invention;
fig. 7 is a schematic view of another matching manner of the partition board and the soft magnetic member provided by the present invention;
fig. 8 is a schematic view of a protection device provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The existing soft magnetic material is assembled in the transformer, in order to achieve the purpose of improving the electromotive force of the secondary side of the transformer, the existing soft magnetic material with low magnetic resistance needs to be adopted, the manufacturing cost of the soft magnetic material is high, and the soft magnetic material is not beneficial to large-scale production and use. The utility model discloses a design a mutual inductance mechanism 1, be equipped with mutual-inductor 11, baffle 121, wire 13 and soft magnetic part 14, wire 13 locates each first spacing space 1111 in through-hole 111, soft magnetic part 14 assembles the spacing space 1112 of second at baffle 121 middle part, and spacing space 1112 of second is in through-hole 111 center, at mutual-inductor 11 during operation, even leakage current is less, through magnetization soft magnetic part 14, strengthen internal magnetic field, thereby soft magnetic part 14's magnetic flux has been increased, because mutual-inductor 11 vice limit turns is unchangeable, the magnetic flux increases, make the electric potential increase on mutual-inductor 11 vice limit, enlarge the output voltage scope, be convenient for detect and provide more energy for external mechanism, improve mutual-inductor 11's precision and stability, and, soft magnetic part 14's magnetic permeability can be relatively lower, thereby reduction in production cost.
Example one
Referring to fig. 1 to 3, and fig. 6, a mutual inductance mechanism 1, the mutual inductance mechanism 1 comprising: a transformer 11 provided with a through hole 111; a plurality of partition plates 121 in the through hole 111 are arranged, the partition plates 121 are arranged in a mutually crossed manner and partition the through hole 111 into a plurality of first limiting spaces 1111, and the partition plates 121 arranged in a mutually crossed manner are provided with second limiting spaces 1112 in the center of the through hole 111; a plurality of wires 13 passing through the first limiting space 1111; a soft magnetic element 14 arranged in the second spacing space 1112.
The mutual inductor 11 is arranged on the circuit board 15 to fulfill its function. The partition board 121 is partially or completely disposed in the through hole 111, the partition board 121 partitions the through hole 111 to form a plurality of first limiting spaces 1111 through which the lead wires 13 can pass and be fixed, and a second limiting space 1112 in which the soft magnetic member 14 can be disposed is disposed in the middle of the partition board 121. Each wire 13 passes through the through hole 111 and is positioned in the first spacing space 1111, which is independent from the other, and is connected to an external mechanism. The soft magnetic member 14 is disposed in the second spacing space 1112. The partition 121 and the lead 13 can be pressed against each other to fix the through hole 111, and the soft magnetic element 14 is fixed in the second spacing space 1112, so that the soft magnetic element 14 and the transformer 11 can be fixed relatively.
In this embodiment, the partition plates 121 are disposed in a crossed manner, wherein the middle of the partition plates is the center of the through hole 111 and the position of the second limiting space 1112, and the soft magnetic member 14 is disposed in the second limiting space 1112, so that the soft magnetic member 14 is located at the center of the through hole 111.
When the mutual inductor 11 works, even if the leakage current is small, the internal magnetic field is enhanced by magnetizing the soft magnetic part 14, so that the magnetic flux of the soft magnetic part 14 is increased, the number of turns of the secondary side of the mutual inductor 11 is unchanged, the magnetic flux is increased, the potential of the secondary side of the mutual inductor 11 is increased, the output voltage range is enlarged, more energy is convenient to detect and provide for an external mechanism, the precision and the stability of the mutual inductor 11 are improved, the magnetic conductivity of the soft magnetic part 14 can be relatively low, and the production cost is reduced.
In this embodiment, the soft magnetic element 14 may be an iron core, and of course, the soft magnetic element 14 may also be other elements, such as iron-silicon alloy, soft magnetic ferrite, and the like, which are not described herein again.
Example two
Referring to fig. 4, on the basis of the first embodiment, the second limiting space 1112 of the second embodiment is disposed at the center of the through hole 111, and the first limiting space 1111 and the wires 13 are uniformly distributed with respect to the center of the through hole 111.
Each partition board 121 partitions the through hole 111 to form a plurality of first limiting spaces 1111, included angles formed between the partition boards 121 are the same, each limiting space is uniformly distributed relative to the center of the through hole 111, and each lead 13 penetrates through and is fixed in the first limiting space 1111 respectively, so that the leads 13 are uniformly distributed relative to the center of the through hole 111.
The soft magnetic part 14 is located at the center of the through hole 111, and the wires 13 are uniformly distributed relative to the center of the through hole 111, so that the wires 13 are uniformly distributed relative to the soft magnetic part 14. Therefore, leakage current generated by the lead 13 can uniformly flow to the soft magnetic part 14, the soft magnetic part 14 obtains a uniform magnetization effect, the magnetic flux of the soft magnetic part 14 is further improved, the potential of the secondary side of the transformer 11 is increased, the output voltage range is expanded, and the precision and the stability of the transformer 11 are also greatly improved.
EXAMPLE III
Referring to fig. 5, on the basis of the second embodiment, two partition plates 121 are provided, and the two partition plates 121 are arranged perpendicular to each other to form a cross-shaped structure. The two partition plates 121 which are vertically arranged in a crossed manner have four ends which respectively abut against the inner walls of the through holes 111, so that four first limiting spaces 1111 are formed between the partition plates 121 and the mutual inductor 11, and the four first limiting spaces 1111 can respectively limit and fix one wire 13.
Referring to fig. 7, as another embodiment of the present invention, the partition board 121 may be provided with a plurality of partitions, one end of each partition board 121 is connected to the fixing part 1214, the other end of the partition board 121 is connected to the transformer 11, the fixing part 1214 is internally provided with the fixing cavity 12141, the cross section of the internal cavity 12141 is arranged in a circular shape, the soft magnetic member 14 is arranged in a shape matching with the fixing cavity 12141, and the soft magnetic member 14 may be exactly clamped in the fixing cavity 12141. And the partition plates 121 form a spacing space between each other, and the lead 13 can be also fixed in the spacing space.
Example four
Referring to fig. 5 and 6, on the basis of the third embodiment, two sides of one partition plate 121 of the fourth embodiment are respectively provided with a limiting groove 1212, the mutual inductor 11 extends towards the inner side of the through hole 111 and is provided with a protrusion 112 matched with the limiting groove 1212, and the protrusion 112 is clamped in the limiting groove 1212, so that the mutual limiting and fixing of the partition plate 121 and the mutual inductor 11 can be realized. During assembly, a user only needs to accurately clamp the protrusion 112 into the limiting groove 1212, and the partition 121 and the transformer 11 can be fixed to each other, so that the protrusion 112 and the limiting groove 1212 are matched with each other, and the assembly work of the user is facilitated.
In this embodiment, of course, if the friction between the partition 121 and the transformer 11 is large enough, the partition 121 may not be provided with the limiting groove 1212, and the transformer 11 may not be provided with the protrusion 112, so that the partition 121 is directly clamped into the transformer 11 by the friction between the partition 121 and the transformer 11, which is simpler to produce and process.
Referring to fig. 5 and 6, the transformer 11 is provided with bosses 113 on both sides of the other partition 121. Since the two partitions 121 are disposed perpendicular to each other, each boss 113 is disposed uniformly with each protrusion 112, that is, the angle between the boss 113 and the protrusion 112 is the same.
The boss 113, the protrusion 112 and the partition plate 121 are mutually matched, so that the four first limiting spaces 1111 are respectively and independently arranged, and the wires 13 can be mutually and uniformly clamped in the first limiting spaces 1111 and independently arranged.
EXAMPLE five
Referring to fig. 5, on the basis of the fourth embodiment, a limiting portion 1213 is fixedly disposed at one end of the limiting groove 1212 of the fifth embodiment. When the protrusion 112 is clamped in the limiting groove 1212, one end of the protrusion 112 may abut against the limiting portion 1213, and the protrusion 112 may slide out of the limiting groove 1212 to separate the partition 121 from the transformer 11 during use due to the abutting effect of the limiting portion 1213.
EXAMPLE six
Referring to fig. 4 to 6, on the basis of the first to fifth embodiments, a fixing portion is extended from at least one partition plate 121 of the sixth embodiment toward the middle portion, and the soft magnetic element 14 is fixedly disposed in the second spacing space 1112 through the fixing portion.
In this embodiment, the fixing portion is a buckle 1211 extending from the partition 121 toward the middle portion, and one end of the soft magnetic member 14 abuts against the buckle 1211, and the other end abuts against the crossing position of each partition 121.
Of course, the fixing portion may be in other forms as long as the soft magnetic element 14 can be fixed in the second stopper space 1112.
The soft magnetic member 14 is set to be in a proper shape and size, one end of the soft magnetic member 14 can abut against the buckle 1211, and the other end of the soft magnetic member can abut against the cross position of each partition plate 121, so that fixation is achieved, rotation or movement of the soft magnetic member in the using process is avoided, and the problem that the secondary electromotive force of the mutual inductor 11 fluctuates greatly due to multiple times of measurement of the same product caused by unfixed conducting wire 13 is solved.
Referring to fig. 5, for convenience of manufacturing, the first partition 121 is not provided with the clip 1211 and the limiting groove 1212, the second partition 121 is provided with the clip 1211 and the limiting groove 1212, and the mutual inductor 11 is uniformly provided with the bosses 113 and the protrusions 112 in the through holes 111. The boss 113 is disposed at a position corresponding to the partition 121 without the clip 1211 and the limiting groove 1212, and the protrusion 112 is disposed at a position corresponding to the partition 121 with the clip 1211 and the limiting groove 1212, so that a purpose of forming a limiting space can be achieved, and a purpose of fixing the partition 121 and the transformer 11 to each other can be achieved.
EXAMPLE seven
Referring to fig. 8, the seventh embodiment provides a protection device including the mutual inductance mechanism 1 according to the first to sixth embodiments and a housing 2, and the mutual inductance mechanism 1 is fitted in the housing 2. The protection device can be an electric leakage protection device or a relay protection device, no matter the electric leakage protection device or the relay protection device, a protection mechanism is arranged in the protection device, and the mutual inductor 11 and the protection mechanism are matched with each other for use, so that the protection or the monitoring of the circuit is realized.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A mutual inductance mechanism, characterized in that it comprises:
the mutual inductor is provided with a through hole;
the partition plates are arranged in the through holes and are mutually crossed to divide the through holes into a plurality of first limiting spaces, and the partition plates which are mutually crossed are provided with second limiting spaces in the centers of the through holes;
the plurality of wires penetrate through the first limiting space;
and the soft magnetic part is arranged in the second limiting space.
2. The mechanism of claim 1, wherein said first space and said leads are evenly spaced about the center of said through hole.
3. A mutual inductance mechanism according to claim 2, wherein said partition is provided in two and perpendicular to each other, said partition dividing said through hole to form four said first space-defining spaces.
4. The mutual inductance mechanism according to claim 3, wherein two sides of one of said partition plates are respectively provided with a limiting groove, the mutual inductor extends towards the inner side of said through hole and is provided with a protrusion matching with said limiting groove, and the mutual inductor is correspondingly provided with a boss at two sides of the other partition plate.
5. The mechanism of claim 4, wherein a stop portion is secured to one end of the stop groove.
6. A mutual inductance mechanism according to any one of claims 1 to 5, wherein at least one of said partition plates is provided with a fixing portion extending towards the middle thereof, and said soft magnetic member is fixedly arranged in said second spacing space via said fixing portion.
7. A mutual inductance mechanism according to claim 6, wherein said fixing portion is a clip extending from said partition towards the middle thereof, one end of said soft magnetic member abutting said clip and the other end abutting the crossing position of each of said partitions.
8. A protective device comprising a mutual inductance mechanism according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922017583.XU CN211088055U (en) | 2019-11-20 | 2019-11-20 | Mutual inductance mechanism and protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922017583.XU CN211088055U (en) | 2019-11-20 | 2019-11-20 | Mutual inductance mechanism and protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211088055U true CN211088055U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922017583.XU Active CN211088055U (en) | 2019-11-20 | 2019-11-20 | Mutual inductance mechanism and protection device |
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| Country | Link |
|---|---|
| CN (1) | CN211088055U (en) |
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2019
- 2019-11-20 CN CN201922017583.XU patent/CN211088055U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231206 Address after: 315333 Kuang Yan Zhen Long Ge Cun, Cixi City, Ningbo City, Zhejiang Province Patentee after: Ningbo bull Low Voltage Electric Co.,Ltd. Address before: 315314 East District of Industrial Park, Cixi, Ningbo, Zhejiang Patentee before: GONGNIU GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right |