CN104505234A - Winding reinforcing structure of distribution transformer with short-circuit-resisting capability - Google Patents
Winding reinforcing structure of distribution transformer with short-circuit-resisting capability Download PDFInfo
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- CN104505234A CN104505234A CN201410830818.6A CN201410830818A CN104505234A CN 104505234 A CN104505234 A CN 104505234A CN 201410830818 A CN201410830818 A CN 201410830818A CN 104505234 A CN104505234 A CN 104505234A
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Abstract
The invention provides a winding reinforcing structure of a distribution transformer with a short-circuit-resisting capability, relates to the field of transformers, and aims at solving the problems that a coil is deformed in a short-circuit process caused by the fact that the outer side of a A-phase and C-phase coil is not supported well, and turn-to-turn short circuit is commonly caused by the insulation damages of a lead wire. The winding reinforcing structure of the distribution transformer with the short-circuit-resisting capability comprises the A-phase and C-phase coil located in the middle of an iron core, an upper clamping piece located on the upper side of the iron core, a lower clamping piece located on the lower side of the iron core, and a baffle located on the outer side face of the A-phase and C-phase coil; reinforcing irons are arranged on the upper clamping piece and the lower clamping piece respectively; the upper end and the lower end of the baffle are fixed on the reinforcing irons respectively by bolts; a paper board is filled between the baffle and the A-phase and C-phase coil. According to the winding reinforcing structure of the distribution transformer with the short-circuit-resisting capability, the structure of additionally arranging the baffle on the outer side face of the A-phase and C-phase coil is adopted, so that the deformation of the coil is effectively controlled when the coil is short-circuit, and the turn-to-turn short circuit condition is avoided.
Description
Technical field
The present invention relates to field transformer, the winding particularly relating to a kind of anti-short circuit capability distribution transforming transformer strengthens structure.
Background technology
At present, from Accident of Transformer situation analysis, anti-short circuit capability has become the major reason of power transformer accident not.For enhancing oil-filled transformer winding anti-short circuit capability, low voltage layer type coil many employings foil structure, the axial electromagnetic force that axial leakage field produces is very little.Coil adopts 4 stretchings and control coil axial compression technique between coil and iron core on radial, and in coiling process, ensure the tensile force of wire.But due to the impact of technological level and production equipment etc., often can not well control.Particularly when short circuit, radial electromagnetic force makes coil diameter become large.When acting on the tension stress on wire and being excessive, winding can produce permanent deformation (interior loop is recessed inward, exterior loop is swollen outward), and good support causes winding deformation outside A, C phase coil, this distortion causes turn-to-turn short circuit with wire insulation breakage usually.
Summary of the invention
For solving the problems of the technologies described above, the winding that the invention provides a kind of anti-short circuit capability distribution transforming transformer strengthens structure.
The technical solution adopted for the present invention to solve the technical problems is: a kind of winding of anti-short circuit capability distribution transforming transformer strengthens structure, it comprises the A be positioned in the middle of iron core, C two phase coil, be positioned at upside unshakable in one's determination upper clamping piece, be positioned at downside unshakable in one's determination lower clamping piece and be positioned at A, the baffle plate of the lateral surface of C two phase coil; Described upper clamping piece and lower clamping piece are respectively arranged with reinforcement iron, and the top and bottom of described baffle plate are separately fixed at by bolt to be strengthened on iron; Described baffle plate and A, C two cardboard space former between phase coil.
Described baffle plate is made up of steel plate and the square steel being arranged on steel plate lateral surface.
Operation principle: baffle plate is fixed on transformer core assembling A, C two lateral surface of phase coil; The reinforcement of baffle plate and upper clamping piece and lower clamping piece both sides definitely position fixing, baffle plate and A, C two are adjusted to gapless between the two with cardboard between phase coil, improve the radial outside electromagnetic force of A, C two phase coil.
Beneficial effect of the present invention: the winding of a kind of anti-short circuit capability distribution transforming transformer of the present invention strengthens structure, adopt A, C two the lateral surface of phase coil install the structure of baffle plate additional, coil is when short circuit, the deformation of coil is controlled effectively, and avoids the generation of turn-to-turn short circuit situation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the winding reinforcement structure of a kind of anti-short circuit capability distribution transforming transformer of embodiment;
Fig. 2 is the schematic diagram of the baffle plate of the winding reinforcement structure of a kind of anti-short circuit capability distribution transforming transformer of embodiment;
Wherein, 1-is unshakable in one's determination, and 2-A, C two phase coil, 3-upper clamping piece, 4-lower clamping piece, 5-baffle plate, 51-steel plate, 52-square steel, 6-strengthens iron, 7-bolt, 8-cardboard.
Embodiment
In order to deepen the understanding of the present invention, be described in further detail the present invention below in conjunction with drawings and Examples, this embodiment, only for explaining the present invention, not forming protection scope of the present invention and limiting.
Embodiment
As depicted in figs. 1 and 2, a kind of winding of anti-short circuit capability distribution transforming transformer strengthens structure, it comprises the A be positioned in the middle of unshakable in one's determination 1, C two phase coil 2, is positioned at upper clamping piece 3 on the upside of in the of unshakable in one's determination 1, is positioned at the lower clamping piece 4 on the downside of in the of unshakable in one's determination 1 and is positioned at A, the baffle plate 5 of the lateral surface of C two phase coil 2; Described upper clamping piece 3 and lower clamping piece 4 are respectively arranged with reinforcement iron 6, and the top and bottom of described baffle plate 5 are separately fixed at by bolt 7 to be strengthened on iron 6; Described baffle plate 5 and A, C two cardboard space former 8 between phase coil 2; Described baffle plate 5 is made up of steel plate 51 and the square steel 52 being arranged on steel plate 51 lateral surface.
The winding of a kind of anti-short circuit capability distribution transforming transformer of the present embodiment strengthens the operation principle of structure: baffle plate 5 is fixed on transformer core 1 and assembles A, the lateral surface of C two phase coil 2; Baffle plate 5 is located with the reinforcement iron 6 of upper clamping piece 3 and lower clamping piece 4 both sides and is fixed by bolt 7, and baffle plate 5 and A, C two are adjusted to gapless between the two with cardboard 8, the radial outside electromagnetic force of raising A, C two phase coil 2 between phase coil 2.
Above-described embodiment should not limit the present invention by any way, and the technical scheme that the mode that all employings are equal to replacement or equivalency transform obtains all drops in protection scope of the present invention.
Claims (2)
1. the winding of an anti-short circuit capability distribution transforming transformer strengthens structure, it is characterized in that: it comprises the A be positioned in the middle of iron core, C two phase coil, be positioned at upside unshakable in one's determination upper clamping piece, be positioned at downside unshakable in one's determination lower clamping piece and be positioned at A, the baffle plate of the lateral surface of C two phase coil; Described upper clamping piece and lower clamping piece are respectively arranged with reinforcement iron, and the top and bottom of described baffle plate are separately fixed at by bolt to be strengthened on iron; Described baffle plate and A, C two cardboard space former between phase coil.
2. the winding of a kind of anti-short circuit capability distribution transforming transformer according to claim 1 strengthens structure, it is characterized in that: described baffle plate is made up of steel plate and the square steel being arranged on steel plate lateral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830818.6A CN104505234A (en) | 2014-12-26 | 2014-12-26 | Winding reinforcing structure of distribution transformer with short-circuit-resisting capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830818.6A CN104505234A (en) | 2014-12-26 | 2014-12-26 | Winding reinforcing structure of distribution transformer with short-circuit-resisting capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104505234A true CN104505234A (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410830818.6A Pending CN104505234A (en) | 2014-12-26 | 2014-12-26 | Winding reinforcing structure of distribution transformer with short-circuit-resisting capability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104505234A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134350A (en) * | 2017-07-05 | 2017-09-05 | 吴江变压器有限公司 | It is a kind of to strengthen the Amorphous Alloy Distribution Transformer winding construction of anti-short circuit capability |
| CN107658113A (en) * | 2017-11-06 | 2018-02-02 | 国家电网公司 | Amorphous alloy transformer iron core assembling structure and its assembly method |
-
2014
- 2014-12-26 CN CN201410830818.6A patent/CN104505234A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134350A (en) * | 2017-07-05 | 2017-09-05 | 吴江变压器有限公司 | It is a kind of to strengthen the Amorphous Alloy Distribution Transformer winding construction of anti-short circuit capability |
| CN107658113A (en) * | 2017-11-06 | 2018-02-02 | 国家电网公司 | Amorphous alloy transformer iron core assembling structure and its assembly method |
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Application publication date: 20150408 |