CN102723178A - Axial pre-tightening mechanism for transformer - Google Patents
Axial pre-tightening mechanism for transformer Download PDFInfo
- Publication number
- CN102723178A CN102723178A CN2012101894623A CN201210189462A CN102723178A CN 102723178 A CN102723178 A CN 102723178A CN 2012101894623 A CN2012101894623 A CN 2012101894623A CN 201210189462 A CN201210189462 A CN 201210189462A CN 102723178 A CN102723178 A CN 102723178A
- Authority
- CN
- China
- Prior art keywords
- transformer
- support plate
- plate
- cushion block
- clamping piece
- 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.)
- Pending
Links
Images
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses an axial pre-tightening mechanism for a transformer. The mechanism comprises an upper clamping piece, a pressure plate and a plurality of clamping points; each clamping point comprises a reinforced plate, a support plate and a cushion plate; the reinforced plate and the support plate are connected with the upper clamping piece; and the cushion block is arranged between the support plate and the pressure plate. With the adoption of the mechanism provided by the invention, the pressure plate of a transformer can be stressed uniformly; the mechanical strengths of various areas can be kept the same when the transformer is subjected to sudden short circuit, and no mechanical instability caused by certain weaken point exists.
Description
Technical field
The present invention relates to field transformer, particularly relate to a kind of transformer and use axial pretightening mechanism.
Background technology
Present big-and-middle-sized oil-filled transformer all adopts the intersegmental disc coil that adds the elasticity cardboard of paper covered wire; Its existing pre-tightening mechanism is as shown in Figure 1; Comprise upper clamping piece 11, pressing plate 51 and anti-pressure nail 21, thereby reach the effect of fastener body through anti-pressure nail 21 clamping platens 51.But the pretightning force difference of the defective of this structure to be each operative employee fastening pressure nail and the pressure spot imbalance causes three phase windings or wherein certain independent winding local pressure is inhomogeneous causes mechanical unstability.Find that through on-the-spot tens transformer suspended cores 60% transformer laminated sheet all has local cracking phenomena.Should there be the similar phenomenon of moving in spite of illness in most of transformers in operation at present.The safe operation of harm electrical network.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of transformer and uses axial pretightening mechanism, can make the transformer pressing plate stressed evenly.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: provide a kind of transformer to use axial pretightening mechanism; Comprise upper clamping piece and pressing plate, also comprise: some compressing a little, each said place that compresses comprises stiffener, support plate and cushion block; Said stiffener is connected with upper clamping piece with support plate, and said cushion block is between support plate and pressing plate.
In preferred embodiment of the present invention, said cushion block is the lamination wooden unit.
In preferred embodiment of the present invention, said cushion block has the different specifications shape according to said support plate and the gap length between the pressing plate that compresses a place.
The invention has the beneficial effects as follows: transformer of the present invention is used axial pretightening mechanism, can make the transformer pressing plate stressed evenly, when transformer bears sudden short circuit, keeps each zone machines intensity consistent, can not cause mechanical unstability because of certain weak spot.
Description of drawings
Fig. 1 is the structural representation of prior art transformer with axial pretightening mechanism;
Fig. 2 is the schematic top plan view of transformer shown in Figure 1 with axial pretightening mechanism;
Fig. 3 is the structural representation of transformer of the present invention with one preferred embodiment of axial pretightening mechanism;
Fig. 4 is the schematic top plan view of transformer shown in Figure 3 with axial pretightening mechanism.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1 and Fig. 2, the embodiment of the invention comprises:
A kind of transformer is used axial pretightening mechanism; Comprise upper clamping piece 10, pressing plate 50 and some points (not mark) that compresses; Each said place that compresses comprises stiffener 20, support plate 30 and cushion block 40; Said stiffener 20 is connected with upper clamping piece 10 with support plate 30, and said cushion block 40 is between support plate 30 and pressing plate 50.
Preferably, said cushion block 40 is the lamination wooden unit.
Preferably, said cushion block 40 compresses the support plate 30 at a place and the gap length between the pressing plate 50 has the different specifications shape according to said.
Transformer of the present invention is following with the installation process of axial pretightening mechanism: all winding integral assemblings of every transformer at first; The constant voltage drying is adjusted to same height (utilizing the elasticity of cardboard) with all windings 60; Behind tight technological process dry finishing, the phase-splitting integral assembling is on core limb 70.Adopt the abundant hydraulic jack 80 of quantity (quantity is fixed by transformer capacity) through the frock that is fixed on upper clamping piece then, affact same pressure simultaneously, squeeze into abundant same material, the cushion block 40 of different size in corresponding support plate 30 positions.Keep the pressure of every phase winding consistent.When transformer bears sudden short circuit, keep each zone machines intensity consistent, can not cause mechanical unstability because of certain weak spot.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (3)
1. a transformer is used axial pretightening mechanism, comprises upper clamping piece and pressing plate, it is characterized in that; Also comprise: some compressing a little; Each said place that compresses comprises stiffener, support plate and cushion block, and said stiffener is connected with upper clamping piece with support plate, and said cushion block is between support plate and pressing plate.
2. transformer according to claim 1 is used axial pretightening mechanism, it is characterized in that, said cushion block is the lamination wooden unit.
3. transformer according to claim 1 is used axial pretightening mechanism, it is characterized in that, said cushion block has the different specifications shape according to said support plate and the gap length between the pressing plate that compresses a place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101894623A CN102723178A (en) | 2012-06-11 | 2012-06-11 | Axial pre-tightening mechanism for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101894623A CN102723178A (en) | 2012-06-11 | 2012-06-11 | Axial pre-tightening mechanism for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102723178A true CN102723178A (en) | 2012-10-10 |
Family
ID=46948911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101894623A Pending CN102723178A (en) | 2012-06-11 | 2012-06-11 | Axial pre-tightening mechanism for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102723178A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5681911A (en) * | 1979-12-07 | 1981-07-04 | Toshiba Corp | Tightening method of transformer winding |
| US6160464A (en) * | 1998-02-06 | 2000-12-12 | Dynapower Corporation | Solid cast resin coil for high voltage transformer, high voltage transformer using same, and method of producing same |
| CN201112092Y (en) * | 2007-09-11 | 2008-09-10 | 中电电气集团有限公司 | Non-encapsulated dry-type transformer coil axial direction pressing device |
| CN201508757U (en) * | 2009-05-19 | 2010-06-16 | 中电电气集团有限公司 | Insulation and compression structure for transformer body |
| CN201576550U (en) * | 2009-11-02 | 2010-09-08 | 常州华迪特种变压器有限公司 | Three-phase amorphous alloy isolation transformer |
| CN201622919U (en) * | 2010-02-03 | 2010-11-03 | 杭州钱江电气集团股份有限公司 | Large transformer body compaction structure |
| CN102136362A (en) * | 2010-12-15 | 2011-07-27 | 中国西电电气股份有限公司 | Process for holding down transformer body |
| CN202758716U (en) * | 2012-06-11 | 2013-02-27 | 常熟市常源变压器有限公司 | Axial pre-compression mechanism for transformer |
-
2012
- 2012-06-11 CN CN2012101894623A patent/CN102723178A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5681911A (en) * | 1979-12-07 | 1981-07-04 | Toshiba Corp | Tightening method of transformer winding |
| US6160464A (en) * | 1998-02-06 | 2000-12-12 | Dynapower Corporation | Solid cast resin coil for high voltage transformer, high voltage transformer using same, and method of producing same |
| CN201112092Y (en) * | 2007-09-11 | 2008-09-10 | 中电电气集团有限公司 | Non-encapsulated dry-type transformer coil axial direction pressing device |
| CN201508757U (en) * | 2009-05-19 | 2010-06-16 | 中电电气集团有限公司 | Insulation and compression structure for transformer body |
| CN201576550U (en) * | 2009-11-02 | 2010-09-08 | 常州华迪特种变压器有限公司 | Three-phase amorphous alloy isolation transformer |
| CN201622919U (en) * | 2010-02-03 | 2010-11-03 | 杭州钱江电气集团股份有限公司 | Large transformer body compaction structure |
| CN102136362A (en) * | 2010-12-15 | 2011-07-27 | 中国西电电气股份有限公司 | Process for holding down transformer body |
| CN202758716U (en) * | 2012-06-11 | 2013-02-27 | 常熟市常源变压器有限公司 | Axial pre-compression mechanism for transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102306541A (en) | Resin-moulded dry-type transformer with three-dimensional noncrystalline alloy roll iron core | |
| CN201868202U (en) | Variable-frequency speed regulating dry type rectifier transformer with stereoscopic rolled iron core | |
| CN105185539A (en) | Insulation dry-type transformer of 20kV voltage class | |
| CN202210460U (en) | Pressing device of transformer coil | |
| CN202758716U (en) | Axial pre-compression mechanism for transformer | |
| CN204067035U (en) | The low-voltage coil assembly structure of a kind of silicon steel two division dry-type transformer body | |
| CN203457006U (en) | Motor rotor punching sheet stacking tool | |
| CN102723178A (en) | Axial pre-tightening mechanism for transformer | |
| CN202585074U (en) | Changeable type test intermediate transformer device | |
| CN207165382U (en) | Amorphous alloy dry-type transformer | |
| CN205080994U (en) | Insulating dry -type transformer of 20kV electric pressure | |
| CN203312010U (en) | Device for fixing high-voltage lead of power transformer | |
| CN101145432A (en) | Dry type transformer high and low voltage foil type coil integral assembling method | |
| CN205845664U (en) | The amorphous alloy transformer winding construction that anti-short circuit capability is high | |
| CN103414293A (en) | Motor stator punching plate overlying tool | |
| CN202771932U (en) | Shockproof dry type transformer | |
| CN202905427U (en) | Iron yoke end ring for extra-high voltage transformer | |
| CN204991389U (en) | Low temperature rise dry -type transformer | |
| CN105957697A (en) | Amorphous ally transformer winding structure with high short circuit resistance | |
| CN201449849U (en) | Novel iron yoke binding structure of high-voltage transformer | |
| CN201562586U (en) | Pressure iron inserting device | |
| CN205069288U (en) | Oil -immersed transformer of 20kV electric pressure | |
| CN203705104U (en) | Magnetic force intensity detection machine | |
| CN204632534U (en) | A kind of pulling plate structure of three-dimensional wound core dry type transformer core clamping and iron core thereof | |
| CN204270829U (en) | A kind of Short Circuit withstand high voltage transformer winding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121010 |