CN202917313U - Amorphous alloy distribution transformer and main insulation structure thereof - Google Patents
Amorphous alloy distribution transformer and main insulation structure thereof Download PDFInfo
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- CN202917313U CN202917313U CN 201220533639 CN201220533639U CN202917313U CN 202917313 U CN202917313 U CN 202917313U CN 201220533639 CN201220533639 CN 201220533639 CN 201220533639 U CN201220533639 U CN 201220533639U CN 202917313 U CN202917313 U CN 202917313U
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Abstract
The utility model provides a main insulation structure of an amorphous alloy distribution transformer. The main insulation structure comprises a main air channel and an insulation unit which are arranged between a high-voltage winding and a low-voltage winding, the main air channel comprises two opposite short-axis oil channels, the insulation unit comprises first insulation units and second insulation units, the first insulation units are arranged in the short-axis oil channels, the second insulation units are positioned between the high-voltage winding and the low-voltage winding and are arranged along the long-axis direction of the low-voltage winding, the positions of the second insulation units are not provided with oil channels, and the second insulation units comprise DMD paper. The main insulation structure is simple, reliable and compact in arrangement, and the manufacturing cost of the transformer can be effectively reduced.
Description
Technical field
The utility model belongs to the transformer technology field, relates to a kind of Main Insulation Structure of Electric and amorphous alloy distribution transformer of amorphous alloy distribution transformer, and this Main Insulation Structure of Electric is specially adapted in 10kV and the above amorphous alloy distribution transformer.
Background technology
The anti-sudden short circuit structure of existing 10kV amorphous alloy distribution transformer is generally: the low pressure winding is the paper tinsel coiling, and the high pressure winding is layer coil.As shown in Figure 1, in amorphous alloy distribution transformer, amorphous alloy core 4 is rectangle, be wound on amorphous alloy winding (high pressure winding and low pressure winding) in the heart and also be rectangular configuration, be that high pressure winding 1 and low pressure winding 3 all are rectangular configuration, the winding of described rectangular configuration is oppositely arranged as major axis and two coils that are oppositely arranged as minor axis by two and consists of.Be Main Insulation Structure of Electric between high pressure winding 1 and the low pressure winding 3, described Main Insulation Structure of Electric comprises main empty path and the insulator that is arranged in the main empty path, main empty path comprises the major axis oil duct 2 that arranges along the long axis direction of winding and the minor axis oil duct 5 that arranges along the short-axis direction of winding, insulator adopts stay to add the version of insulating cylinder usually at present, no matter namely be major axis oil duct 2 or minor axis oil duct 5, therefore be provided with stay and insulating paper in it, be along the main insulating structure of the long axis direction of winding or along the main insulating structure of the short-axis direction of winding no matter be: main insulating structure (9mm)=stay thickness (6mm)+cal(l)iper (3mm).
The probability that each transformer production producer passes through in order to improve the anti-sudden short circuit test of amorphous alloy distribution transformer, usually institute's Adopts measure is dielectric strength and the mechanical strength that increases main empty path, and the measure of adopting is for increasing main insulating structure and adopting stay to add the insulation system of cardboard.Yet, for the 10kV amorphous alloy transformer that adopts this structure, in manufacture process, exist infrastructure cost high, the deficiency that volume of transformer is large.
The utility model content
Technical problem to be solved in the utility model is for the above-mentioned problems in the prior art, a kind of Main Insulation Structure of Electric and amorphous alloy distribution transformer of amorphous alloy distribution transformer are provided, this Main Insulation Structure of Electric is simple and reliable, characteristics of compact layout can effectively reduce the cost of manufacture of transformer.
A kind of Main Insulation Structure of Electric of amorphous alloy distribution transformer, comprise main empty path and the insulation unit be located between high pressure winding and the low pressure winding, wherein, described main empty path comprises two minor axis oil ducts that are oppositely arranged, described insulation unit comprise be arranged on first in described minor axis oil duct insulation unit and be in the high pressure winding and the low pressure winding between and along the second insulation unit that the long axis direction of low pressure winding arranges, oil duct is not established in described the second insulation residing position, unit, and described the second insulation unit comprises DMD paper.
Preferably, described DMD paper is F level DMD paper, and the thickness of set F level DMD paper is 4-5mm.
Preferably, described the first insulation unit comprises stay and insulating paper, and described stay and insulating paper are successively set in each minor axis oil duct according to order from inside to outside.Preferred described insulating paper adopts the some gummed paper.
The width of preferred described each minor axis oil duct is 12-16mm.
Preferably, described the second insulation unit adopts two, and described two second insulation unit are separately positioned in two symmetric positions that are between high pressure winding and the low pressure winding and arrange along the long axis direction of low pressure winding.
A kind of amorphous alloy distribution transformer comprises Main Insulation Structure of Electric, and described Main Insulation Structure of Electric adopts above-mentioned Main Insulation Structure of Electric.
The beneficial effects of the utility model are:
1. owing to carry out mechanical strength, electrical strength and the thermal endurance that the transformer of type approval test not only will guarantee conventional non-crystaline amorphous metal depressor, to guarantee that also this transformer can bear the suffered enormous impact power of low-pressure side three-phase shortcircuit, and after carrying out short circuit test, can not produce considerable influence to its performance, simultaneously since the transformer temperature rise of type approval test and electricity close all obtain lower, the utility model Main Insulation Structure of Electric can reduce radiating surface owing to do not establish oil duct along the long axis direction of winding;
2. this Main Insulation Structure of Electric has reduced the length of non-crystaline amorphous metal along the winding long axis direction, reduced the centre-to-centre spacing of transformer, thereby reduce taking up room of transformer, also can reduce simultaneously the consumption of non-crystaline amorphous metal, has preferably manufacturability, because therefore expensive (more more than double than cold bundle oriented silicon steel disc) of amorphous alloy material can reduce manufacturing cost and the testing expenses of this type of transformer, has significant economic benefit;
3. include DMD paper in second of this Main Insulation Structure of Electric the insulation unit, because in this transformer, the width of cloth that low pressure winding (being interior loop) is subjected to is convergent force to power, the width of cloth that high pressure winding (being exterior loop) is subjected to is expansive force to power, high, the stressed of (being main empty path) is expansionary force between the low pressure, it or not extruding force, therefore need not to use stay to add the structure of cardboard, use DMD paper can guarantee its intensity, because the high-temperature capability of DMD paper is far longer than conventional some gummed paper, its frequency breakdown voltage is far longer than a gummed paper, therefore, the second insulation unit can satisfy corresponding electric property, also can satisfy higher temperature requirement (its long-term work temperature is 155 °) simultaneously, can satisfy the thermally-stabilised intensity of transformer, and the compatibility of DMD paper and transformer oil is also better.
In summary, the utility model Main Insulation Structure of Electric is guaranteeing under its main insulation intensity of transformer, the moving strength of stability prerequisite, can reduce the cost of transformer, and can reduce the space of occupying of transformer, strengthen the thermally-stabilised intensity of transformer, when reducing the transformer cost, can improve transformer by the probability of test.Not only guarantee mechanical strength, electrical strength and the thermal endurance of transformer, also reduced simultaneously cost required when type approval test is done by transformer producer.
This Main Insulation Structure of Electric also has simple and reliable, easy to make simple, the advantages such as characteristics of compact layout.
The utility model Main Insulation Structure of Electric is specially adapted on the 10kV amorphous alloy distribution transformer, also is useful in simultaneously to do on the type approval test amorphous alloy distribution transformer of (comprising sudden short circuit and temperature rise test).
Adopt the amorphous alloy distribution transformer of above-mentioned Main Insulation Structure of Electric to have reliably moving, thermal stability and insulation characterisitic.
Description of drawings
Fig. 1 is the structural representation of amorphous alloy distribution transformer in the prior art;
Fig. 2 is the structural representation of amorphous alloy distribution transformer among the utility model embodiment 1.
Among the figure: 1-high pressure winding; 2-major axis oil duct; 3-low pressure winding; The 4-amorphous alloy core; 5-minor axis oil duct; 21-DMD paper; 51-minor axis oil duct.
Embodiment
For making those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
A kind of Main Insulation Structure of Electric of amorphous alloy distribution transformer, comprise main empty path and the insulation unit be located between high pressure winding and the low pressure winding, described main empty path comprises two minor axis oil ducts that are oppositely arranged, described insulation unit comprise be arranged on first in described minor axis oil duct insulation unit and be arranged on the high pressure winding and the low pressure winding between and along the second insulation unit that the long axis direction of low pressure winding arranges, oil duct is not established in described the second insulation residing position, unit, and described the second insulation unit comprises DMD paper.
A kind of amorphous alloy distribution transformer that adopts above-mentioned Main Insulation Structure of Electric.
Embodiment 1:
In the present embodiment, as shown in Figure 2, this transformer is the SBH15-M-630/10 type amorphous alloy distribution transformer that our company produces.This transformer comprises amorphous alloy core 4 and is wound on successively amorphous alloy core 4 low pressure winding 3 and high pressure winding 1 outward.
Wherein, amorphous alloy core 4 be shaped as rectangle, low pressure winding 3 and high pressure winding 1 also are rectangular configuration, namely the cross section of winding is rectangle.Wherein, low pressure winding 3 is paper tinsel formula structure, adopts the coiling of paper tinsel copper; High pressure winding 1 is multi-layer cylinder formula structure, adopts the coiling of paper bag flat type copper wire.
In the present embodiment, this Main Insulation Structure of Electric comprises main empty path and the insulation unit of being located between high pressure winding 1 and the low pressure winding 3, described main empty path comprises two minor axis oil ducts 51 that are oppositely arranged, described insulation unit comprise be arranged on first in the minor axis oil duct 51 insulation unit and be in high pressure winding 1 and low pressure winding 3 between and along the second insulation unit that the long axis direction of low pressure winding arranges, oil duct is not established in described the second insulation residing position, unit, namely, main empty path adopts half oil channel structure, along the coil long axis direction without oil duct.Wherein, the width of minor axis oil duct 51 is 12～16mm.
Wherein, described the second insulation unit adopts two, and described two second insulation unit are separately positioned on two symmetric positions that are between high pressure winding 1 and the low pressure winding 3 and arrange along the long axis direction of low pressure winding.
Described the second insulation unit comprises DMD paper 21.In the present embodiment, described DMD paper 21 is F level DMD paper, and the thickness of described F level DMD paper is 4-5mm, is preferably 5mm.Its frequency breakdown voltage is far longer than a gummed paper, and DMD paper can satisfy its electric property, can also satisfy higher temperature requirement (the long-term work temperature of F level DMD paper is 155 °) simultaneously, namely can satisfy the thermally-stabilised intensity of transformer.
Wherein, described the first insulation unit adopts two, described two first insulation unit are separately positioned in two minor axis oil ducts 51, and each first insulation unit comprises stay and insulating paper, and described stay and insulating paper are successively set in the minor axis oil duct 51 according to order from inside to outside.In the present embodiment, described insulating paper adopts the some gummed paper.
During making, first with low-voltage coil (low pressure winding 3) on hard insulating cylinder, outlet copper bar end to end should be parallel and alignment, and be put in the end face side that fillet is R10; After the low-voltage coil coiling is complete, press-fit drying and processing, control the width of cloth of low-voltage coil well to size.Be to guarantee high-tension coil (high pressure winding 1) coiling consolidation, the high and low pressure coil adopt cover around.Namely after the low-voltage coil coiling is complete, low-voltage coil from foil winding equipment pull down be placed on on the automatic coil winding machine of tensioning apparatus with the coiling high-tension coil.Before preparing the coiling high-tension coil, first between high pressure winding 1 and low pressure winding 3 and along placing respectively F level DMD paper in two symmetric positions of the long axis direction of low pressure winding, the thickness of the F level DMD paper that place each position is 5mm, and in two minor axis oil ducts 51, place respectively stay, and then wrap up 3 layer 0.08 some gummed paper in the periphery of stay and F level DMD paper.After whole circle is wrapped, begin again the coiling high-tension coil.
Be understandable that above execution mode only is the illustrative embodiments that adopts for principle of the present utility model is described, yet the utility model is not limited to this.For those skilled in the art, in the situation that does not break away from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement also are considered as protection range of the present utility model.
Claims (7)
1. the Main Insulation Structure of Electric of an amorphous alloy distribution transformer, comprise main empty path and the insulation unit be located between high pressure winding and the low pressure winding, it is characterized in that, described main empty path comprises two minor axis oil ducts that are oppositely arranged, described insulation unit comprise be arranged on first in described minor axis oil duct insulation unit and be in the high pressure winding and the low pressure winding between and along the second insulation unit that the long axis direction of low pressure winding arranges, oil duct is not established in described the second insulation residing position, unit, and described the second insulation unit comprises DMD paper.
2. Main Insulation Structure of Electric according to claim 1 is characterized in that, described DMD paper is F level DMD paper, and the thickness of this F level DMD paper is 4-5mm.
3. Main Insulation Structure of Electric according to claim 1 and 2 is characterized in that, described the first insulation unit comprises stay and insulating paper, and described stay and insulating paper are successively set in each minor axis oil duct according to order from inside to outside.
4. Main Insulation Structure of Electric according to claim 3 is characterized in that, described insulating paper adopts the some gummed paper.
5. Main Insulation Structure of Electric according to claim 3 is characterized in that, the width of described each minor axis oil duct is 12-16mm.
6. Main Insulation Structure of Electric according to claim 1, it is characterized in that, described the second insulation unit adopts two, and described two second insulation unit are separately positioned on two symmetric positions that are between high pressure winding and the low pressure winding and arrange along the long axis direction of low pressure winding.
7. an amorphous alloy distribution transformer comprises Main Insulation Structure of Electric, it is characterized in that, described Main Insulation Structure of Electric adopts one of claim 1-6 described Main Insulation Structure of Electric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533639 CN202917313U (en) | 2012-10-18 | 2012-10-18 | Amorphous alloy distribution transformer and main insulation structure thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533639 CN202917313U (en) | 2012-10-18 | 2012-10-18 | Amorphous alloy distribution transformer and main insulation structure thereof |
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| CN202917313U true CN202917313U (en) | 2013-05-01 |
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| CN 201220533639 Expired - Lifetime CN202917313U (en) | 2012-10-18 | 2012-10-18 | Amorphous alloy distribution transformer and main insulation structure thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680862A (en) * | 2013-12-11 | 2014-03-26 | 上海置信电气非晶有限公司 | Amorphous transformer rectangular wire-wound winding and manufacturing method thereof |
-
2012
- 2012-10-18 CN CN 201220533639 patent/CN202917313U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680862A (en) * | 2013-12-11 | 2014-03-26 | 上海置信电气非晶有限公司 | Amorphous transformer rectangular wire-wound winding and manufacturing method thereof |
| CN103680862B (en) * | 2013-12-11 | 2015-12-09 | 上海置信电气非晶有限公司 | A kind of amorphous transformer rectangular lines is around winding and manufacture method thereof |
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| GR01 | Patent grant | ||
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Granted publication date: 20130501 |