CN204480857U - A kind of low noise iron core - Google Patents
A kind of low noise iron core Download PDFInfo
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- CN204480857U CN204480857U CN201520152318.1U CN201520152318U CN204480857U CN 204480857 U CN204480857 U CN 204480857U CN 201520152318 U CN201520152318 U CN 201520152318U CN 204480857 U CN204480857 U CN 204480857U
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- lamination
- stem
- epoxy resin
- iron core
- low noise
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Abstract
The utility model provides a kind of low noise iron core, and comprise stem stem and iron yoke, stem stem comprises side column and newel, and side column is trapezoidal, and newel is parallel to the cross section parallelogram of the first lamination; All clearance space is formed with between the first adjacent lamination and between the second adjacent lamination; Clearance space is filled with epoxy resin layer, and is also provided with glass grid in clearance space, and glass grid is placed among epoxy resin layer; Multiple first lamination is sequentially connected in series by lug plate.Filling epoxy resin layer is flooded in gap, after being heating and curing, an entirety is formed between lamination, dielectric strength and the insulation resistance of transformer insulating system can be improved, to improve its electrical insulation properties, eddy current effect on effective reduction by first lamination and the second lamination, and then reduce core loss, epoxy resin layer can increase transformer mechanical strength simultaneously.
Description
Technical field
The utility model relates to field transformer, more specifically, relates to a kind of low noise iron core.
Background technology
Transformer is widely used in electric power, metallurgy and chemical industry, along with the fast development of China's economic construction, the demand of market to transformer increases day by day, not only requires its stable performance, security of operation, and it is also proposed more and more higher requirement to the performance index of its efficiency and loss.
Transformer is made up of iron core and coil, is to utilize the principle of electromagnetic induction to change the device of alternating voltage.Wherein, iron core comprises iron yoke and stem stem, and iron yoke and stem stem coincide at seam crossing and be connected.Iron yoke and stem stem are by the stacked formation of multiple iron core laminations, but there is gap between superposition rear panel and sheet, when iron core works, iron core lamination can produce comparatively maelstrom, not only increase the core loss of transformer, and when eddy-current heating amount is comparatively large, iron core even can be caused to burn, easily short circuit between simultaneously adjacent iron core lamination.
In addition, when transformer normally runs, iron core lamination can produce vibration because of mutual electromagnetic action, and then produces noise.
Utility model content
The utility model provides a kind of low noise iron core, and to solve, iron core lamination caloric value in existing iron core is large, core loss is comparatively large, and can produce the technical problem of vibration and noise.
The utility model provides a kind of low noise iron core, comprises stem stem and iron yoke, it is characterized in that,
Stem stem comprises the first lamination of multiple stacked setting, and iron yoke comprises the second lamination of multiple stacked setting, and the first lamination and second lamination corresponding with the first lamination interlock and splice, in order to form flux circuit;
Stem stem comprises side column and newel, and side column is trapezoidal, and newel is parallel to the cross section parallelogram of the first lamination;
All clearance space is formed with between the first adjacent lamination and between the second adjacent lamination;
Clearance space is filled with epoxy resin layer, and is also provided with glass grid in clearance space, and glass grid is placed among epoxy resin layer;
Multiple first lamination is sequentially connected in series by lug plate.
Further, glass grid be provided with two-layer more than.
Further, the end face of the first lamination and the second lamination is equipped with polyester glue-line in the position of splicing, the vibration produced during in order to absorb the work of low noise iron core.
The beneficial effects of the utility model:
The utility model low noise iron core, comprise stem stem and iron yoke, stem stem comprises the first lamination of multiple stacked setting, and iron yoke comprises the second lamination of multiple stacked setting, first lamination and second lamination corresponding with the first lamination interlock and splice, in order to form flux circuit; Stem stem comprises side column and newel, and side column is trapezoidal, and newel is parallel to the cross section parallelogram of the first lamination; All clearance space is formed with between the first adjacent lamination and between the second adjacent lamination; Clearance space is filled with epoxy resin layer, and is also provided with glass grid in clearance space, and glass grid is placed among epoxy resin layer; Multiple first lamination is sequentially connected in series by lug plate.Filling epoxy resin is flooded in gap, after being heating and curing, an entirety is formed between lamination, dielectric strength and the insulation resistance of transformer insulating system can be improved, to improve its electrical insulation properties, eddy current effect on effective reduction by first lamination and the second lamination, and then reduce core loss, epoxy resin can increase transformer mechanical strength simultaneously, improve transformer core at transport and the vibration resistance of use procedure and impact resistance, and the setting of glass grid, make the epoxy resin after solidifying not easily because thermal stress or mechanical stress produce contraction deformation, further ensure the mechanical strength of the utility model low noise iron core, thus make solidify after epoxy resin can be effective invest on lamination, simultaneously, the noise produced because of the effect of electromagnetic force can also be reduced during transformer core uses.Meanwhile, the first lamination is joined end to end by lug plate by the utility model successively, and serial connection formation entirety, further reduces the generation of eddy current effect on lamination, and add the intensity of transformer core.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model embodiment low noise iron core;
Fig. 2 is the partial enlargement structural representation at A place in Fig. 1;
Fig. 3 is the structural representation of stem stem shown in Fig. 1.
Embodiment
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
See figures.1.and.2, the utility model embodiment provides a kind of low noise iron core, comprise stem stem 10 and iron yoke 20, stem stem 10 comprises the first lamination 11 of multiple stacked setting, iron yoke 20 comprises the second lamination 21 of multiple stacked setting, first lamination 11 and second lamination 21 corresponding with the first lamination 11 interlock and splice, in order to form flux circuit; Stem stem 10 comprises side column and newel, and side column is trapezoidal, and newel is parallel to the cross section parallelogram of the first lamination 11; All clearance space is formed with between the first adjacent lamination 11 and between adjacent the second lamination (21); Clearance space is filled with epoxy resin layer, and is also provided with glass grid 30 in clearance space, and glass grid 30 is placed among epoxy resin layer; Multiple first lamination 11 is sequentially connected in series by lug plate.Filling epoxy resin is flooded in gap, after being heating and curing, an entirety is formed between lamination, dielectric strength and the insulation resistance of transformer insulating system can be improved, to improve its electrical insulation properties, eddy current effect on effective reduction by first lamination 11 and the second lamination 21, and then reduce core loss, epoxy resin can increase transformer mechanical strength simultaneously, improve transformer core at transport and the vibration resistance of use procedure and impact resistance, and the setting of glass grid 30, make the epoxy resin after solidifying not easily because thermal stress or mechanical stress produce contraction deformation, further ensure the mechanical strength of the utility model low noise iron core, thus make solidify after epoxy resin can be effective invest on lamination, simultaneously, the noise produced because of the effect of electromagnetic force can also be reduced during transformer core uses.A glass grid 30 is provided with reference between two the first laminations 11 adjacent shown in Fig. 3, figure.Meanwhile, the utility model is joined end to end successively by the termination of lug plate by the first lamination 11, and serial connection formation entirety, further reduces the generation of eddy current effect on lamination, and add the intensity of transformer core.
Particularly, glass grid 30 be provided with two-layer more than, adopt the support that this kind of design can better realize stem stem 10, and effectively can reduce epoxy resin bubble residual in the process immersing stem stem 10, damping effect and mechanical strength are further improved.
Further, the first lamination 11 and the end face of described second lamination 21 are equipped with polyester glue-line in the position of splicing, the vibration produced during in order to absorb the work of described low noise iron core.Adopt this kind of mode, make the effect of noise elimination and damping better.
In addition, the utility model low noise iron core, also effectively improve the heat conductivility of transformer core, because after transformer epoxy resin-impregnated, the space of iron core and winding is filled by epoxy resin layer, can improve the thermal conductivity of transformer whole, reduces the temperature rise of transformer, while the core loss of transformer is significantly reduced, its conversion efficiency then significantly promotes.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (3)
1. a low noise iron core, comprises stem stem (10) and iron yoke (20), it is characterized in that,
Described stem stem (10) comprises first lamination (11) of multiple stacked setting, described iron yoke (20) comprises second lamination (21) of multiple stacked setting, described first lamination (11) and described second lamination (21) corresponding with described first lamination (11) interlocking splice, in order to form flux circuit;
Described stem stem (10) comprises side column and newel, and described side column is trapezoidal, and described newel is parallel to the cross section parallelogram of described first lamination (11);
All clearance space is formed with between adjacent described first lamination (11) and between adjacent described second lamination (21);
Described clearance space is filled with epoxy resin layer, and is also provided with glass grid (30) in described clearance space, and described glass grid (30) is placed among described epoxy resin layer;
Multiple described first lamination (11) is sequentially connected in series by lug plate.
2. low noise iron core according to claim 1, is characterized in that,
Described glass grid (30) be provided with two-layer more than.
3. low noise iron core according to claim 1 and 2, is characterized in that,
Described first lamination (11) and the end face of described second lamination (21) are equipped with polyester glue-line in the position of splicing, the vibration produced during in order to absorb the work of described low noise iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152318.1U CN204480857U (en) | 2015-03-18 | 2015-03-18 | A kind of low noise iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152318.1U CN204480857U (en) | 2015-03-18 | 2015-03-18 | A kind of low noise iron core |
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| Publication Number | Publication Date |
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| CN204480857U true CN204480857U (en) | 2015-07-15 |
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| CN201520152318.1U Active CN204480857U (en) | 2015-03-18 | 2015-03-18 | A kind of low noise iron core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10991502B2 (en) | 2017-11-10 | 2021-04-27 | Tci, Llc | Bobbin wound electrical reactor assembly |
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2015
- 2015-03-18 CN CN201520152318.1U patent/CN204480857U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10991502B2 (en) | 2017-11-10 | 2021-04-27 | Tci, Llc | Bobbin wound electrical reactor assembly |
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