CN205335023U - A magnetic core for big air gap magnetic circuit - Google Patents
A magnetic core for big air gap magnetic circuit Download PDFInfo
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- CN205335023U CN205335023U CN201521081419.0U CN201521081419U CN205335023U CN 205335023 U CN205335023 U CN 205335023U CN 201521081419 U CN201521081419 U CN 201521081419U CN 205335023 U CN205335023 U CN 205335023U
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- 239000000463 material Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000005389 magnetism Effects 0.000 abstract 5
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 25
- 230000004907 flux Effects 0.000 description 21
- 239000000696 magnetic material Substances 0.000 description 9
- 230000012447 hatching Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a magnetic core that has big air gap magnetic circuit, including yoke and the vertical magnetism post that is fixed in in the yoke, the air gap is located between the terminal surface of magnetism post, yoke, magnetism post and air gap component magnetic circuit, magnetic core magnetism styletable area S1 satisfies with magnetic core sectional area SM relation: 1.1SM< S1< 10SM. The utility model discloses a close check under the condition of increase substantially magnetism material materials not, is carried out to the size of current magnetic core to above -mentioned scheme to increase air gap area reduces the magnetic resistance, is favorable to the transmission of magnetic flow and energy.
Description
Technical field
This utility model relates to calutron, specifically a kind of magnetic core for big air-gap magnetic circuit。
Background technology
Transformator and inductance (reactor) are conventional calutrons。Calutron is by whether using that magnetic core can be divided into hollow and that have magnetic core two kinds。Calutron described below in this utility model is all the calutron having magnetic core, and magnetic core is made up much larger than the magnetic material (such as silicon steel, ferrite, amorphous, crystallite magnetic material etc.) of air of pcrmeability。
Application demand according to calutron, magnetic core can have multiple geometry:
One, the geometry of one-phase core has the various shape such as U, E, EC, EER, EP, EPC, ETD, LP, L, PM, PQ, RM, UF and tank shape, and wherein pot core is the basic configuration of magnetic core, and other shape can be regarded pot core cutting as and form。Pot core includes round can and rectangular tank。
Two, the geometry of three-phase core has the shapes such as three pillar type, pentastyle and Y shape, and they can also be regarded pot core cutting as and form。
This utility model is decomposed into magnetic core yoke and two parts of magnetic post。
Fig. 1 a, 1b are the sectional view of the schematic diagram of E shape magnetic core and C-C position respectively；Fig. 2 a, 2b are the sectional view of the schematic diagram of U-shaped magnetic core and D-D position respectively；Fig. 3 a, 3b are the sectional view of the schematic diagram of rectangle pot core and B-B position respectively；Fig. 4 a, 4b are the sectional view of the schematic diagram of round can shaped magnetic core and A-A position respectively。In the magnetic core schematic diagram of Fig. 1 a-Fig. 4 b, the hatching left side is magnetic post, is yoke on the right of hatching；Magnetic post includes the stem stem being centrally located and the lateral column being positioned at yoke end, it is illustrated that in, P is stem stem, and Q is lateral column。Magnetic post constitutes whole magnetic core by yoke。When making calutron with these magnetic cores, air gap is between the end face of magnetic post。Yoke, magnetic post, air gap constitute magnetic circuit。
When not having the closed magnetic circuit of air gap with E shape, pot core composition, if the winding (magnetic potential) passing to electric current is positioned at stem stem, then magnetic flux path is for from stem stem, through yoke, lateral column, another lateral column, another yoke, returning to stem stem；And the magnetic flux path of U-shaped magnetic core is through yoke to another stem stem from a stem stem, then through another yoke, return to the stem stem that sets out。In diagram, L represents magnetic flux path。
Fig. 5 a, 5b are the sectional view of the perforate schematic diagram of round can yoke and E-E position respectively；Fig. 6 a, 6b are the sectional view of the perforate schematic diagram of rectangular tank yoke and E-E position respectively。These perforates not necessary being, illustrates that utility model and the supposition that carries out。The lateral area of definition perforate is S, and S is defined as pot core yoke section amasss。The center of circle of perforate: round can is positioned at the circle centre position of yoke, rectangular tank is positioned at yoke two diagonal point of intersection。If opening diameter is D, yoke thickness is h, it is clear that S=3.14Dh。It is said that in general, different-diameter tapping lateral area average flux density is different。
Definition: average flux density B, total magnetic flux Ф, magnetic flux path sectional area S triadic relation, B=Ф/S。The long-pending SM of definition core cross section: for U-shaped magnetic core and pot core, is defined as the long-pending SM of core cross section by the sectional area of average flux density maximum in magnetic flux path；For E shape magnetic core, by position long-pending for core cross section due to average flux density maximum, if this position is at yoke and lateral column, then the sectional area at this place is defined as the long-pending SM of core cross section；If this position is at stem stem, then the half of this place's sectional area is defined as the long-pending SM of core cross section。
Definition magnetic core magnetic styletable area S1: for U-shaped magnetic core and pot core, smaller in stem stem and lateral column end area is defined as magnetic styletable area S1；Then by smaller in the half of stem stem end area and lateral column end area, magnetic styletable area S1 is defined as E shape magnetic core。
In diagram, the length of air gap is F。
The deficiencies in the prior art part is in that: in order to alleviate its weight in calutron manufacturing process, reduce its volume, reduce its cost, the design principle of core shapes and physical dimension is to improve the utilization rate of magnetic material, under such principle: the sectional area of magnetic post is equal everywhere；The sectional area of U-shaped magnetic core magnetic post and yoke is approximately equivalent；The sectional area of E shape magnetic core lateral column and yoke is also approximately equivalent, and the sectional area of stem stem is approximately twice lateral column；The stem stem diameter of pot core is less than its yoke thickness 6 times。Other shapes of magnetic core is also process according to such design principle。Allow the place peakflux density operationally of minimum sectional area as far as possible close to the saturation flux density of magnetic material。Such magnetic core is suitable for close coupling transformator or small air gap magnetic circuit, but can pay the cost that air-gap reluctance is bigger when using it for big air-gap magnetic circuit。It addition, air-gap reluctance will reduce too greatly the degree of coupling of loosely coupled transformer, it is unfavorable for that electric energy is transferred to secondary by former limit。
Utility model content
Therefore, for above-mentioned problem, the utility model proposes a kind of magnetic core for big air-gap magnetic circuit, existing core structure is improved, increase air gap area, reducing magnetic resistance, it is simple to electric energy is transferred to secondary by former limit, thus solving the deficiency of prior art。
In order to solve above-mentioned technical problem, the thinking that this utility model adopts is, due to prior art Problems existing, this utility model adopts the method strengthening magnetic styletable face and neighbouring sectional area thereof to reduce air gap flux density, the maximum functional magnetic flux density of the other parts of yoke and magnetic post is still close to the saturation flux density of magnetic material, reach both to reduce air-gap reluctance, do not roll up again the purpose of magnetic material consumption。Because air-gap reluctance and air gap area are inversely proportional to, it is directly proportional to gas length；Therefore under the constant premise of gas length, strengthen air gap area and can reduce air-gap reluctance。
Concrete, a kind of magnetic core for big air-gap magnetic circuit, including yoke and be vertically fixed on the magnetic post in yoke, air gap is between the end face of magnetic post；Yoke, magnetic post and air gap constitute magnetic circuit；Magnetic core magnetic styletable area S1 meets with the long-pending SM relation of core cross section: 1.1SM < S1 < 10SM。The length F of the air gap air gap more than 5 millimeters is called big air gap by this utility model；Therefore, in order to reduce the leakage magnetic flux without air gap, the minimum range G between the stem stem and stem stem, stem stem and lateral column of same magnetic core is more than 8 millimeters。
Described magnetic core is U, E, EC, EER, EP, EPC, ETD, LP, L, PM, PQ, RM, UF or the one-phase core of tank shape。
This utility model passes through such scheme, when not increasing considerably magnetic material materials, the size of existing magnetic core is strictly controlled, thus increasing air gap area, reducing magnetic resistance, being conducive to the transmission of magnetic flux and energy。This utility model simple in construction, it is easy to accomplish, there is good practicality。
Accompanying drawing explanation
Fig. 1 a, 1b are the sectional view of the schematic diagram of E shape magnetic core and C-C position respectively；
Fig. 2 a, 2b are the sectional view of the schematic diagram of U-shaped magnetic core and D-D position respectively；
Fig. 3 a, 3b are the sectional view of the schematic diagram of rectangle pot core and B-B position respectively；
Fig. 4 a, 4b are the sectional view of the schematic diagram of round can shaped magnetic core and A-A position respectively；
Fig. 5 a, 5b are the sectional view of the perforate schematic diagram of round can magnetic core yoke and E-E position respectively；
Fig. 6 a, 6b are the sectional view of the perforate schematic diagram of rectangular tank magnetic core yoke and E-E position respectively；
Fig. 7 a is the front view of the round can shaped magnetic core of embodiment 1；
Fig. 7 b is that the A-A of Fig. 7 a is to sectional view；
Fig. 7 c is the combination application schematic diagram of the round can shaped magnetic core of embodiment 1；
Fig. 8 a is the front view of the rectangular tank magnetic core of embodiment 2；
Fig. 8 b is that the A-A of Fig. 8 a is to sectional view；
Fig. 8 c is the combination application schematic diagram of the rectangular tank magnetic core of embodiment 2；
Fig. 9 a is the front view of the U-shaped magnetic core of embodiment 3；
Fig. 9 b is the left view of the U-shaped magnetic core of embodiment 3；
Fig. 9 c is the combination application schematic diagram of the U-shaped magnetic core of embodiment 3；
Figure 10 a is the front view of the E shape magnetic core of embodiment 4；
Figure 10 b is the left view of the E shape magnetic core of embodiment 4；
Figure 10 c is the combination application schematic diagram of the E shape magnetic core of embodiment 4。
Detailed description of the invention
In conjunction with the drawings and specific embodiments, this utility model is further illustrated。
Due to prior art Problems existing, this utility model adopts the method strengthening magnetic styletable face and neighbouring sectional area thereof to reduce air gap flux density, the maximum functional magnetic flux density of the other parts of yoke and magnetic post is still close to the saturation flux density of magnetic material, reach both to reduce air-gap reluctance, do not roll up again the purpose of magnetic material consumption。Because air-gap reluctance and air gap area are inversely proportional to, it is directly proportional to gas length；Therefore under the constant premise of gas length, strengthen air gap area and can reduce air-gap reluctance。Specifically in implementation process, the long-pending SM relation of magnetic core magnetic styletable area S1 and core cross section is allowed to meet 1.1SM < S1 < 10SM。Two stem stem end areas of U-shaped core are roughly equal。Tank core stem stem and lateral column end area are roughly equal。E core stem stem end area is substantially equal to lateral column end area sum。
Fig. 1 a, 1b are the sectional view of the schematic diagram of E shape magnetic core and C-C position respectively, Fig. 2 a, 2b are the sectional view of the schematic diagram of U-shaped magnetic core and D-D position respectively, the schematic diagram of Fig. 3 a, 3b side's of being pot core respectively and the sectional view of B-B position, Fig. 4 a, 4b are the sectional view of the schematic diagram of round can shaped magnetic core and A-A position respectively；In above-mentioned figure, each hatching (the C-C hatching in Fig. 1 a, the D-D hatching in Fig. 2 a, the B-B hatching in Fig. 3 a, the A-A hatching in Fig. 4 a) left side is magnetic post, and the right is yoke；Magnetic post includes centrally located stem stem and is positioned at the lateral column of side, and wherein P is stem stem, and Q is lateral column。Magnetic post constitutes whole magnetic core by yoke；Air gap is between the end face of magnetic post。Yoke, magnetic post, air gap constitute magnetic circuit。
Fig. 5 a, 5b are the sectional view of the perforate schematic diagram of round can yoke and E-E position respectively, and Fig. 6 a, 6b are the sectional view of the perforate schematic diagram of rectangular tank yoke and E-E position respectively。Wherein, the round can yoke of Fig. 5 a and Fig. 6 a and rectangular tank yoke, perforate therein not necessary being, illustrate that this utility model and carry out it is assumed that the lateral area of definition perforate is S, if opening diameter is D, yoke thickness is h, it is clear that S=3.14Dh。It is said that in general, different-diameter tapping lateral area average flux density is different, this utility model is defined as the sectional area SM of tank core yoke average flux density maximum。
Definition magnetic core stem stem end area is S1。
Magnetic core can be U, E, EC, EER, EP, EPC, ETD, LP, L, PM, PQ, RM, UF or the one-phase core of tank shape。
Embodiment 1
The present embodiment is for round can shaped magnetic core, and referring to Fig. 7 a, Fig. 7 b and Fig. 7 c, in the present embodiment, magnetic core lateral column end area is slightly larger than magnetic core stem stem end area, therefore with magnetic core stem stem end area for magnetic core end area S1, magnetic core lateral column end area is not more than 1.2S1。S1=5SM, magnetic core end area S1 meet with the long-pending SM of core cross section: 1.1SM < S1 < 10SM。Because significantly increasing magnetic core end area, air-gap reluctance can be reduced by more than 50, it can be seen that, substantially reduce air-gap reluctance。
Embodiment 2
The present embodiment is for rectangular tank magnetic core, and referring to Fig. 8 a, Fig. 8 b and Fig. 8 c, in the present embodiment, magnetic core lateral column end area is slightly larger than magnetic core stem stem end area, therefore with magnetic core stem stem end area for magnetic core end area S1, magnetic core lateral column end area is not more than 1.2S1。S1=5SM, magnetic core end area S1 meet with the long-pending SM of core cross section: 1.1SM < S1 < 10SM。Because significantly increasing magnetic core end area, air-gap reluctance can be reduced by more than 50, it can be seen that, substantially reduce air-gap reluctance。
Embodiment 3
The present embodiment is for U-shaped magnetic core, and referring to Fig. 9 a, Fig. 9 b and Fig. 9 c, in the present embodiment, two stem stem end areas are roughly equal, and with less for magnetic core end area S1, bigger stem stem end area is not more than 1.2S1。S1=5SM, magnetic core end area S1 meet with the long-pending SM of core cross section: 1.1SM < S1 < 10SM。Because significantly increasing magnetic core end area, air-gap reluctance can be reduced by more than 50, it can be seen that, substantially reduce air-gap reluctance。
Embodiment 4
The present embodiment is for E shape magnetic core, referring to Figure 10 a, Figure 10 b and Figure 10 c, in the present embodiment, magnetic core lateral column end area is slightly larger than magnetic core stem stem end area half, therefore with the half of magnetic core stem stem end area for magnetic core end area S1, magnetic core lateral column end area is not more than 1.2S1。S1=5SM, magnetic core end area S1 meet with the long-pending SM of core cross section: 1.1SM < S1 < 10SM。Because significantly increasing magnetic core end area, air-gap reluctance can be reduced by more than 50, it can be seen that, substantially reduce air-gap reluctance。
Although specifically showing in conjunction with preferred embodiment and describing this utility model; but those skilled in the art should be understood that; in the spirit and scope of the present utility model limited without departing from appended claims; this utility model can be made a variety of changes in the form and details, be protection domain of the present utility model。
Claims (3)
1., for the magnetic core of big air-gap magnetic circuit, including yoke and be vertically fixed on the magnetic post in yoke, air gap is between the end face of magnetic post；Yoke, magnetic post and air gap constitute magnetic circuit；Magnetic core magnetic styletable area S1 meets with the long-pending SM relation of core cross section: 1.1SM < S1 < 10SM。
2. a kind of magnetic core for big air-gap magnetic circuit according to claim 1, it is characterised in that: the minimum range between the stem stem of same magnetic core and stem stem, stem stem and lateral column is more than 8 millimeters。
3. a kind of magnetic core for big air-gap magnetic circuit according to claim 1, it is characterised in that: magnetic core is U, E, EC, EER, EP, EPC, ETD, LP, L, PM, PQ, RM, UF or the one-phase core of tank shape。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521081419.0U CN205335023U (en) | 2015-12-23 | 2015-12-23 | A magnetic core for big air gap magnetic circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521081419.0U CN205335023U (en) | 2015-12-23 | 2015-12-23 | A magnetic core for big air gap magnetic circuit |
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| Publication Number | Publication Date |
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| CN205335023U true CN205335023U (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521081419.0U Expired - Fee Related CN205335023U (en) | 2015-12-23 | 2015-12-23 | A magnetic core for big air gap magnetic circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374492A (en) * | 2015-12-23 | 2016-03-02 | 厦门新页科技有限公司 | Magnetic core with large air gap magnetic circuit |
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2015
- 2015-12-23 CN CN201521081419.0U patent/CN205335023U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374492A (en) * | 2015-12-23 | 2016-03-02 | 厦门新页科技有限公司 | Magnetic core with large air gap magnetic circuit |
| CN105374492B (en) * | 2015-12-23 | 2018-02-13 | 厦门新页科技有限公司 | A kind of magnetic core for big air-gap magnetic circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| 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: 20160622 Termination date: 20181223 |