CN104733165A - Three-phase three-limb amorphous alloy dry type transformer iron core and manufacturing method thereof - Google Patents
Three-phase three-limb amorphous alloy dry type transformer iron core and manufacturing method thereof Download PDFInfo
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- CN104733165A CN104733165A CN201410820298.0A CN201410820298A CN104733165A CN 104733165 A CN104733165 A CN 104733165A CN 201410820298 A CN201410820298 A CN 201410820298A CN 104733165 A CN104733165 A CN 104733165A
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Abstract
The invention discloses a three-phase three-limb amorphous alloy dry type transformer iron core and a manufacturing method thereof. The iron core comprises an outer frame iron core body, two inner frame iron core bodies, coating layers and an E-type pull plate. The two inner frame iron core bodies are arranged in the outer frame iron core body side by side. The outer frame iron core body and the two inner frame iron core bodies each comprises a top end, a bottom end, a core column connected between the top end and the bottom end and an iron core lap arranged at the top end, the end face of the outer frame iron core body and the end faces of the inner frame iron core bodies are coated with the coating layers, and the E-type pull plate is connected to the outer side faces of the core columns and the outer side faces of the bottom ends through the coating layers.
Description
Technical field
The present invention relates to transformer technology field, and in particular to the three-phase three-limb amorphous alloy dry-type transformer iron core of one and manufacture method thereof.
Background technology
Amorphous alloy transformer due to no-load loss comparatively silicon steel transformer can reduce about 70%, have lower no-load current, be the optimal distribution transformer of current energy-saving effect simultaneously, is specially adapted to rural power grids and developing region even load rate lower ground side.Non-crystaline amorphous metal is very responsive to mechanical stress, is that tensile stress or bending stress all can affect its magnetic property, therefore, should consider to reduce iron core stressed when fabrication design iron core as far as possible.
Traditional amorphous alloy dry-type transformer is all generally four frame pentastyle structures, and two large frame iron cores 110,120 namely, the little frame iron core 130,140 in two, both sides is arranged side by side, as shown in Figure 1.Because pyknic design feature makes its floor space when practical application large, be unfavorable for installing, and it is formed by 4 iron cores side by side or 8 iron cores are double, when carrying out mounting coil, folding iron core number of times is more, and amorphous iron core is frequently stressed, affects the performance of transformer.Three-phase three-limb core structure then eliminates two frames, makes whole core structure become tall and thin type, decreases floor space, saved equipment cost, as shown in Figure 2.Current three-phase three-limb iron core, owing to eliminating return yoke, is namely made up of 3 iron cores or 6 iron cores, but when device body is set with, and peripheral large frame iron core 210 is longer, and suit opens that to close iron core comparatively difficult, and iron core is easily out of shape stressed, affects the performance of transformer.
Summary of the invention
In view of this, the present invention is intended to solve in prior art, and three-phase three-limb transformer core is when device body is set with, peripheral large frame iron core is longer, suit opens that to close iron core comparatively difficult, and iron core is easily out of shape stressed, and then affects the technical problem such as performance of transformer.
The invention provides a kind of three-phase three-limb amorphous alloy dry-type transformer iron core, it comprises: housing iron core and two inside casing iron cores, and described two inside casing iron cores are arranged side by side in described housing iron core; Wherein, described housing iron core and described two inside casing iron cores comprise: top, bottom, be connected to the stem stem between described top and bottom and be arranged at the iron core joining seam on described top; Coat, is coated on the end face of described housing iron core and two inside casing iron cores; E type arm-tie, is connected to described stem stem and Basolateral face by described coat.
Further, described coat comprises successively: the first adhesive layer, woven fiberglass layer of cloth, the second adhesive layer.
Further, described first adhesive layer and the second adhesive layer are epoxy resin layer.
Further, the thickness of described coat is 3-5 millimeter.
The present invention also provides a kind of three-phase three-limb amorphous alloy dry-type transformer iron core manufacture method, comprises the following steps: open stretching by housing iron core joining seam; First inside casing iron core is hung in described housing iron core, and is placed in the side of described housing iron core bottom; Second inside casing iron core is hung in described housing iron core, and side by side compact with described first inside casing iron core; The iron core face of smooth described first inside casing iron core, described second inside casing iron core and described housing iron core and iron core end face; First adhesive layer is evenly applied to described iron core end face, except iron core joining seam position; Described first adhesive layer lays grid glass cloth layer, compacting, and binding agent is appeared; After described first adhesive layer solidifies, then apply the second adhesive layer; On the stem stem that E type arm-tie is layered on the iron core being coated with binding agent and Basolateral face, evenly compress, make described second adhesive layer fully contact with E type arm-tie and solidify.
Further, housing iron core joining seam is opened stretching, and two stretching joining seam ends are separated slightly outward.
Further, described method also comprises: after described E type arm-tie fully contacts and solidifies, and upset iron core, carries out opposite side installation by above-mentioned steps.
Further, described first adhesive layer and the second adhesive layer are epoxy resin layer.
Further, the thickness of described first adhesive layer, described woven fiberglass layer of cloth and the second adhesive layer is 3-5 millimeter.
Three-phase three-limb amorphous alloy dry-type transformer iron core provided by the invention and manufacture method thereof, compared to prior art, have following beneficial effect:
Iron core group is dressed up as a whole, and utilize the special binding agent with flexible nature to carry out certain thickness coating, place the insulation grid cloth of suitable dimension simultaneously, the pertusate supporting bracket of mounting strap, and make the hole part of E type arm-tie also be full of binding agent, the certain pressure of even applying make E type arm-tie and the firm bonding of iron core as a whole, wait for adhesive cures, and then greatly can reduce the assembling difficulty of integrated iron core, improve the mechanical strength of iron core, also contribute to increasing work efficiency and product quality simultaneously.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Figure 1 shows that the five-limb amorphous alloy transformer core structural representation of four frames in prior art;
Figure 2 shows that three-phase three-pillar amorphous alloy transformer core structure schematic diagram in prior art;
Fig. 3 A is depicted as the core structure schematic diagram of the three-phase three-pillar amorphous alloy transformer iron core that the embodiment of the present invention provides;
Fig. 3 B is depicted as the structural representation of the E type arm-tie of the three-phase three-pillar amorphous alloy transformer iron core that the embodiment of the present invention provides;
Fig. 3 C is depicted as the structural representation of the woven fiberglass layer of cloth of the three-phase three-pillar amorphous alloy transformer iron core that the embodiment of the present invention provides;
Figure 4 shows that the flow chart of the three-phase three-pillar amorphous alloy transformer iron core manufacture method that the embodiment of the present invention provides;
Figure 5 shows that the three-phase three-pillar amorphous alloy transformer iron core sleeve that the embodiment of the present invention provides dresses up type figure.
Description of reference numerals:
Large frame iron core 110,120; Two little frame iron cores 130,140; Large frame iron core 210; Housing iron core 310; Two inside casing iron cores 320,330; Top 340; Iron core joining seam 341; Bottom 350; Stem stem 360; E type arm-tie 370; Location steady pin 371; Woven fiberglass layer of cloth 380; Coat 390.
Embodiment
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below in conjunction with drawings and Examples, the present invention is specifically described.Accompanying drawing in the following describes is only some embodiments of the present invention.For those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Refer to Fig. 3 A, be depicted as the structural representation of the three-phase three-pillar amorphous alloy transformer iron core that the embodiment of the present invention provides.
In embodiments of the present invention, this three-phase three-limb amorphous alloy dry-type transformer iron core comprises: housing iron core 310 and two inside casing iron cores 320,330, and described two inside casing iron cores 320,330 are arranged side by side in described housing iron core 310; Wherein, described housing iron core 310 and described two inside casing iron cores 320,330 comprise: top 340, bottom 350, be connected to the stem stem 360 between described top 340 and bottom 350 and be arranged at the iron core joining seam 341 on described top 340; Coat 390, is coated on the end face of described housing iron core 310 and two inside casing iron cores 320,330; E type arm-tie 370, is connected to described stem stem 360 and bottom 350 lateral surface by described coat 390.
Incorporated by reference to see Fig. 3 B, the three-phase three-limb amorphous alloy dry-type transformer iron core that the embodiment of the present invention provides is compared with existing three-phase three-column iron core, steel E type arm-tie 370 is provided with outside stem stem and bottom end, E type arm-tie and iron core assembly form integrated iron core structure, and outside E type arm-tie 370, be provided with location steady pin 371, closely can be connected as a single entity with channel-section steel folder, make integrated transformers device body easy to assembly, product strength increases, economic and practical, especially, after applying on Large Copacity dry-type transformer, reliability, stability are largely increased.
Incorporated by reference to see Fig. 3 C, in embodiments of the present invention, described coat comprises successively: the first adhesive layer, woven fiberglass layer of cloth 380, second adhesive layer.
Coating certain thickness is utilized to have the adhesive layer of flexible nature, and place the woven fiberglass layer of cloth 380 of suitable dimension, mounting strap pertusate E type arm-tie 370, and make the hole part of E type arm-tie 370 also be full of binding agent, the certain pressure of even applying makes the bonding that E type arm-tie 370 and iron core are firm as a whole, waits for adhesive cures, and then greatly can reduce the assembling difficulty of integrated iron core, improve the mechanical strength of iron core, also contribute to increasing work efficiency and product quality simultaneously.
In addition, in the present embodiment, the object of the first adhesive layer and woven fiberglass layer of cloth 380 is by two little large first primary solidification of iron core, then after being pressed by E type arm-tie 370, avoids binding agent and overflow from E type arm-tie 370 side, ensure that bond effect.
In embodiments of the present invention, described first adhesive layer and the second adhesive layer are epoxy resin layer.The binding agent that the embodiment of the present invention uses is double-component high-strength material, overcome the shortcoming of the cracking behavior of conventional binders, high solidification internal stress, reduce further the exciting power of traditional iron core, be conducive to the noise improving iron core, not only make adhesion strength significantly increase, insulating properties strengthens, and greatly can reduce the assembling difficulty of integrated iron core, improve the mechanical strength of iron core, also contribute to increasing work efficiency and product quality simultaneously.
In embodiments of the present invention, the thickness of described coat is 3-5 millimeter.Certain thickness is adopted to have the adhesive layer of flexible nature, and place the woven fiberglass layer of cloth of suitable dimension, mounting strap pertusate E type arm-tie, and make the hole part of E type arm-tie also be full of binding agent, the certain pressure of even applying make E type arm-tie and the firm bonding of iron core as a whole, wait for adhesive cures, and then greatly can reduce the assembling difficulty of integrated iron core, improve the mechanical strength of iron core, also contribute to increasing work efficiency and product quality simultaneously.
Refer to Fig. 4, it is depicted as the three-phase three-limb amorphous alloy dry-type transformer iron core manufacture method flow chart that one embodiment of the invention provides,
Incorporated by reference to Fig. 5, the method comprises the following steps:
Housing iron core joining seam is opened stretching by step S410;
First two little large a set of three-phase three-column iron cores are moved to iron core final molding district, open stretching by a set of for housing iron core joining seam, and the return yoke of both sides is separated slightly outward.
First inside casing iron core hangs in described housing iron core by step S420, and is placed in the side of described housing iron core bottom;
Second inside casing iron core hangs in described housing iron core by step S430, and side by side compact with described first inside casing iron core;
If it is less to be placed on interior inside casing iron core, then, in the large iron core using magnetic to hang to be placed in by a little iron core joining seam to open, makes it near bottom and side, note not making large iron core band produce displacement and distortion.If it is comparatively large to be placed on interior iron core, when placing another little iron core, must slowly advance, it is stable and enter in housing iron core slowly for Artificial Control, side by side compact and do not make housing iron core band produce displacement and distortion with the first inside casing iron core.
The iron core face of the smooth described first inside casing iron core of step S440, described second inside casing iron core and described housing iron core and iron core end face;
A set ofly shut housing iron core joining seam successively, place exterior sheathing in joining seam position and clamp, use nylon hammer to knock exterior sheathing, until all gap of band and gauffer disappear.At iron core end face, knock screed gently with rubber hammer, until iron core end face is smooth.
Step S450 evenly applies the first adhesive layer to described iron core end face, except iron core joining seam position, keeps being coated with equably back and forth.
The embodiment of the present invention uses the binding agent of double-component high-strength material.
Step S460 lays grid glass cloth layer, compacting on described first adhesive layer, and binding agent is appeared;
Step S470 after the first adhesive layer solidifies, then applies the second adhesive layer;
In the present embodiment, two-layer coating adhesive layer adds that E font grid glass cloth thickness is about 3-5 millimeter, is as the criterion with actual requirement.The binding agent of the double-component high-strength material that the embodiment of the present invention uses, as epoxy resin layer, adhesion strength can be made significantly to increase, insulating properties strengthens, and then greatly can reduce the assembling difficulty of integrated iron core, improve the mechanical strength of iron core, also contribute to increasing work efficiency and product quality simultaneously.The object of the first adhesive layer and upper laying grid glass cloth layer thereof is by two little large first primary solidification of iron core, if do not have coat, directly operation below, after E type arm-tie can be made to press, binding agent can overflow from the side, affects bond effect.
On the stem stem that E type arm-tie is layered on the iron core being coated with binding agent by step S480 and Basolateral face, evenly compress, make described second adhesive layer fully contact with E type arm-tie and solidify.
Whether be filled with binding agent in the hole of attention E type arm-tie, make it be full of and the binding agent of spilling is wiped off; Notice whether iron core column both sides overflow binding agent and strike off.Treat E type arm-tie and the firm bonding of iron core as a whole, and after binding agent solidifies completely, use roll-over table upset iron core, by above-mentioned steps, E type arm-tie be installed.If two-layer six iron cores, should at the upside E type arm-tie coated with adhesive layer of lower floor's iron core, prepare the downside E type arm-tie of bonding upper strata iron core, in the process of handling upper strata iron core, handling height should a little more than importing docking model, can not be too high, handling is to treating slowly to move down directly over docking iron core to achieve a butt joint and can complete.If three rows or more layer iron core is processed in this way, but needs two pieces or more block E type arm-tie.Single final molding as shown in Figure 5.
In sum, a kind of integrally-built amorphous alloy transformer core of three-phase three-column of the embodiment of the present invention and manufacture method thereof, three-phase three-column iron core with routine is compared, E type arm-tie is provided with at stem stem and Basolateral, E type arm-tie and iron core assembly form integrated iron core structure, location steady pin is provided with outside E type arm-tie, closely be connected as a single entity with channel-section steel folder, make integrated transformers device body easy to assembly, product strength increases, economic and practical, after especially applying on Large Copacity dry-type transformer, reliability, stability are largely increased.Simultaneously, it is double-component high-strength material that iron core entirety applies the epoxy resin used, and has the features such as intensity is large, good insulating, overcomes the shortcoming of the cracking behavior of conventional epoxies, high solidification internal stress, reduce further the exciting power of traditional iron core, be conducive to the noise improving iron core.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment of making, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a three-phase three-limb amorphous alloy dry-type transformer iron core, is characterized in that, comprising:
Housing iron core and two inside casing iron cores, described two inside casing iron cores are arranged side by side in described housing iron core;
Wherein, described housing iron core and described two inside casing iron cores comprise: top, bottom, be connected to the stem stem between described top and bottom and be arranged at the iron core joining seam on described top;
Coat, is coated on the end face of described housing iron core and two inside casing iron cores;
E type arm-tie, is connected to described stem stem and Basolateral face by described coat.
2. three-phase three-limb amorphous alloy dry-type transformer iron core according to claim 1, it is characterized in that, described coat comprises successively: the first adhesive layer, woven fiberglass layer of cloth, the second adhesive layer.
3. three-phase three-limb amorphous alloy dry-type transformer iron core according to claim 1, is characterized in that, described first adhesive layer and the second adhesive layer are epoxy resin layer.
4. three-phase three-limb amorphous alloy dry-type transformer iron core according to claim 1, is characterized in that, the thickness of described coat is 3-5 millimeter.
5. a three-phase three-limb amorphous alloy dry-type transformer iron core manufacture method, is characterized in that, comprise the following steps:
Housing iron core joining seam is opened stretching;
First inside casing iron core is hung in described housing iron core, and is placed in the side of described housing iron core bottom;
Second inside casing iron core is hung in described housing iron core, and side by side compact with described first inside casing iron core;
The iron core face of smooth described first inside casing iron core, described second inside casing iron core and described housing iron core and iron core end face;
First adhesive layer is evenly applied to described iron core end face;
Described first adhesive layer lays grid glass cloth layer, compacting, and binding agent is appeared; After the first adhesive layer solidifies, then apply the second adhesive layer;
On the stem stem that E type arm-tie is layered on the iron core being coated with binding agent and Basolateral face, evenly compress,
Described second adhesive layer is made fully to contact with E type arm-tie and solidify.
6. method according to claim 5, is characterized in that, opens stretching by housing iron core joining seam, and two stretching joining seam ends are separated slightly outward.
7. method according to claim 5, is characterized in that, also comprises: after described E type arm-tie fully contacts and solidifies, and upset iron core, carries out opposite side installation by above-mentioned steps.
8. method according to claim 5, is characterized in that, described first adhesive layer and the second adhesive layer are epoxy resin layer.
9. method according to claim 5, is characterized in that, the thickness of described first adhesive layer, described woven fiberglass layer of cloth and the second adhesive layer is 3-5 millimeter.
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| CN113130198A (en) * | 2021-03-24 | 2021-07-16 | 无锡普天铁心股份有限公司 | Fixing method of three-phase three-column non-overlapping upper yoke iron core |
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| CN113130198A (en) * | 2021-03-24 | 2021-07-16 | 无锡普天铁心股份有限公司 | Fixing method of three-phase three-column non-overlapping upper yoke iron core |
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