CN202758716U - Axial pre-compression mechanism for transformer - Google Patents
Axial pre-compression mechanism for transformer Download PDFInfo
- Publication number
- CN202758716U CN202758716U CN 201220271534 CN201220271534U CN202758716U CN 202758716 U CN202758716 U CN 202758716U CN 201220271534 CN201220271534 CN 201220271534 CN 201220271534 U CN201220271534 U CN 201220271534U CN 202758716 U CN202758716 U CN 202758716U
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- Prior art keywords
- transformer
- support plate
- cushion block
- pressing plate
- utility
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- 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 an axial pre-compression mechanism for a transformer. The axial pre-compression mechanism comprises an upper clamp, a pressing plate and a plurality of compression points, and each compression point comprises a reinforcing plate, a support plate and a cushion block, wherein the reinforcing plate and the support plate are connected with the upper clamp, and the cushion block is positioned between the support plate and the pressing plate. By the aid of the axial pre-compression mechanism for the transformer, the pressing plate of the transformer can be uniformly stressed, the mechanical strength of areas is kept uniform when the transformer bears burst short circuit, and mechanical instability due to a certain weak point is avoided.
Description
Technical field
The utility model relates to field transformer, particularly relates to a kind of transformer 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 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 by 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 the Local Cracking phenomenon.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.
The utility model content
The technical problem that the utility model mainly solves provides a kind of transformer axial pretightening mechanism, can make transformer pressing plate stressed evenly.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of transformer axial pretightening mechanism is provided, comprise upper clamping piece and pressing plate, also comprise: some compression points, each described compression point place comprises stiffener, support plate and cushion block, described stiffener is connected with upper clamping piece with support plate, and described cushion block is between support plate and pressing plate.
In preferred embodiment of the utility model, described cushion block is the lamination wooden unit.
In preferred embodiment of the utility model, described cushion block has different specification shapes according to support plate and the gap length between the pressing plate at described compression point place.
The beneficial effects of the utility model are: the utility model transformer axial pretightening mechanism, and can make transformer pressing plate stressed even, when bearing sudden short circuit, transformer keep each zone machines intensity consistent, can not cause mechanical unstability because of certain weak spot.
Description of drawings
Fig. 1 is the structural representation that the prior art transformer is used axial pretightening mechanism;
Fig. 2 is the schematic top plan view that transformer shown in Figure 1 is used axial pretightening mechanism;
Fig. 3 is the structural representation that the utility model transformer is used one preferred embodiment of axial pretightening mechanism;
Fig. 4 is the schematic top plan view that transformer shown in Figure 3 is used axial pretightening mechanism.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection range of the present utility model is made more explicit defining.
See also Fig. 1 and Fig. 2, the utility model embodiment comprises:
A kind of transformer axial pretightening mechanism, comprise upper clamping piece 10, pressing plate 50 and some compressions point (not mark), each described compression point place comprises stiffener 20, support plate 30 and cushion block 40, described stiffener 20 is connected with support plate and is connected with upper clamping piece 10, and described cushion block 40 is between support plate 30 and pressing plate 50.
Preferably, described cushion block 40 is the lamination wooden unit.
Preferably, described cushion block 40 has different specification shapes according to support plate 30 and the gap length between the pressing plate 50 at described compression point place.
The utility model transformer is as follows with the installation process of axial pretightening mechanism: at first all integrals of every transformer are set with, Constant pressure 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 iron core column 70.Then adopt the abundant hydraulic jack 80(quantity of quantity to decide by transformer capacity by the frock that is fixed on upper clamping piece), be applied to simultaneously same pressure, 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 only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; 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 utility model.
Claims (2)
1. a transformer axial pretightening mechanism comprises upper clamping piece and pressing plate, it is characterized in that, also comprise: some compression points, each described compression point place comprises stiffener, support plate and cushion block, and described stiffener is connected with upper clamping piece with support plate, and described cushion block is between support plate and pressing plate.
2. transformer according to claim 1 axial pretightening mechanism is characterized in that, described cushion block is the lamination wooden unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220271534 CN202758716U (en) | 2012-06-11 | 2012-06-11 | Axial pre-compression mechanism for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220271534 CN202758716U (en) | 2012-06-11 | 2012-06-11 | Axial pre-compression mechanism for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758716U true CN202758716U (en) | 2013-02-27 |
Family
ID=47737884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220271534 Expired - Fee Related CN202758716U (en) | 2012-06-11 | 2012-06-11 | Axial pre-compression mechanism for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723178A (en) * | 2012-06-11 | 2012-10-10 | 常熟市常源变压器有限公司 | Axial pre-tightening mechanism for transformer |
-
2012
- 2012-06-11 CN CN 201220271534 patent/CN202758716U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723178A (en) * | 2012-06-11 | 2012-10-10 | 常熟市常源变压器有限公司 | Axial pre-tightening mechanism for transformer |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20190611 |