CN202720999U - Transformer core yoke clamping structure - Google Patents
Transformer core yoke clamping structure Download PDFInfo
- Publication number
- CN202720999U CN202720999U CN 201220362189 CN201220362189U CN202720999U CN 202720999 U CN202720999 U CN 202720999U CN 201220362189 CN201220362189 CN 201220362189 CN 201220362189 U CN201220362189 U CN 201220362189U CN 202720999 U CN202720999 U CN 202720999U
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- CN
- China
- Prior art keywords
- yoke
- core
- transformer
- clamping structure
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a transformer core yoke clamping structure. The transformer core yoke clamping structure comprises a yoke, a center pillar sheet and a side pillar sheet, wherein at least eight yoke-through screw core plate punched holes are formed on the yoke. According to the utility model, the yoke-through screw core plate punched holes are smaller than that in the prior art so as to reduce core cross area loss caused by the holes as well as magnetic flux distortion of the core caused by the core cross area loss, thereby obtaining more uniform clamping force, reducing no-load loss and no-load current and simultaneously lowering transformer noise.
Description
Technical field
The utility model belongs to field transformer, especially a kind of transformer core yoke sheet clamping structure.
Background technology
Transformer is to utilize the principle of electromagnetic induction to change the device of alternating voltage, and main member is primary coil, secondary coil and iron core.In electric equipment and radio-circuit, be commonly used for lifting voltage, matched impedance, safety isolation etc.In generator, no matter be that coil movement is passed through magnetic field or Movement in Magnetic Field by fixed coil, all can be in coil induced potential, these two kinds of situations, the value of magnetic flux is all constant, but with the magnetic flux quantity of coil intersecting chain change is arranged, this is the principle of mutual induction.Transformer is exactly that a kind of undesirable mutual electromagnetic inductance of utilizing is answered voltage of transformation, the device of electric current and impedance.The function of transformer mainly contains: voltage transformation; Current transformation, impedance transformation, isolation; Voltage stabilizing etc.
Iron core is magnetic circuit part main in the transformer.Usually higher by silicon content, hot rolling or cold-reduced silicon sheet closed assembly that the surface scribbles insulating varnish form, and iron core is divided into core limb and transverse sheet two parts, and column sleeve unshakable in one's determination has winding; Transverse sheet is the usefulness of closed magnetic circuit.The citation form of core construction has two kinds of core type and shell-types.
The upper and lower iron yoke of dry-type transformer clamps usually 4 of employings and wears the yoke screw-rod structure.Along with the increase of transformer capacity, the increase that also is directly proportional of the diameter of wearing the yoke screw rod, corresponding punching also increases thereupon on the yoke sheet, produces cross-sectional area unshakable in one's determination in the minimizing of punching place, and the area of loss is that punching is directly amassed with lamination thickness is.Cause thus magnetic flux density herein to increase, cause that transformer noload losses and noise increase.
Summary of the invention
The utility model is not enough for prior art, and a kind of transformer core yoke sheet clamping structure is provided, and the clamp force distribution of yoke sheet is more even, thereby reaches the purpose that reduces transformer noload losses and noise.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of transformer core yoke sheet clamping structure, comprise the yoke sheet, middle column sheet and side column sheet, be provided with at least 8 on the described yoke sheet and wear the punching of yoke screw rod lamination, arranging at least 8 wears after the punching of yoke screw rod lamination, can be so that describedly wear little than originally of yoke screw rod lamination punching, the magnetic flux distortion unshakable in one's determination that can reduce the loss of the cross-sectional area unshakable in one's determination that causes because of punching and cause thus, make clamping force more even, play thus and reduce no-load loss and no-load current, also reduce the noise of transformer simultaneously.
The utility model compared with prior art, have following beneficial effect: the utility model can be so that describedly wear little than originally of yoke screw rod lamination punching, the magnetic flux distortion unshakable in one's determination that can reduce the loss of the cross-sectional area unshakable in one's determination that causes because of punching and cause thus, and make clamping force more even, can reduce no-load loss and no-load current thus, also reduce the noise of transformer simultaneously.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
Referring to Fig. 1, a kind of transformer core yoke sheet clamping structure, comprise yoke sheet 1, middle column sheet 2 and side column sheet 3, be provided with at least 8 on the described yoke sheet 1 and wear yoke screw rod lamination punching 4, form 8 in the present embodiment and wear yoke screw rod lamination punching 4, because forming 8 wears yoke screw rod lamination punching 4, therefore can be than originally using 4 apertures of wearing yoke screw rod lamination punching 4 less, and can be than 4 clamping forces of wearing yoke screw rod lamination punching 4 are more even originally, can reduce no-load loss and no-load current thus, also reduce the noise of transformer simultaneously.
Claims (1)
1. a transformer core yoke sheet clamping structure comprises yoke sheet (1), and middle column sheet (2) and side column sheet (3) is characterized in that: be provided with at least 8 on the described yoke sheet (1) and wear yoke screw rod lamination punching (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220362189 CN202720999U (en) | 2012-07-25 | 2012-07-25 | Transformer core yoke clamping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220362189 CN202720999U (en) | 2012-07-25 | 2012-07-25 | Transformer core yoke clamping structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202720999U true CN202720999U (en) | 2013-02-06 |
Family
ID=47622813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220362189 Expired - Fee Related CN202720999U (en) | 2012-07-25 | 2012-07-25 | Transformer core yoke clamping structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202720999U (en) |
-
2012
- 2012-07-25 CN CN 201220362189 patent/CN202720999U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20160725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |