CN203456259U - High tension coil of resin cast dry wound core transformer - Google Patents
High tension coil of resin cast dry wound core transformer Download PDFInfo
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- CN203456259U CN203456259U CN201320606264.2U CN201320606264U CN203456259U CN 203456259 U CN203456259 U CN 203456259U CN 201320606264 U CN201320606264 U CN 201320606264U CN 203456259 U CN203456259 U CN 203456259U
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Abstract
The utility model discloses a manufacturing method of a high tension coil of a resin cast dry wound core transformer. The method comprises the following steps: wrapping a glass cloth plate or a PET (Polyethylene glycol Terephthalate) plate on a winding former of the coil, then cementing the joint of the glass cloth plate or the PET plate by using an silicone adhesive or a double faced adhesive tape, and then sparsely winding and binding the glass cloth plate or the PET plate by using a glass tape; inserting both ends of the glass cloth plate or the PET plate into grooves of two end plates of a winding clay die, filling the gap between the grooves by glass cement to seal the gap; wrapping a pre-soaked fiberglass mesh grating; winding a winding of an electromagnetic wire; and sleeving an outer die, casting resin, cooling and removing the outer die, the two end plates of the winding die and the winding die after resin is cured. The problems that in the manufacturing process of the high tension coil of the resin cast dry wound core transformer, the die is hard to remove, the resin easily leaks and the environment is polluted are solved. The die is simple to manufacture, convenient and reliable to seal and efficient and high in quality. The high tension coil disclosed by the utility model is easy to branch and guide and firm to weld. The branched leads are not staggered, so that the space is saved and the short circuit is avoided, thus, the high tension coil is safe and reliable.
Description
Technical field
The utility model relates to a kind of resin casting dry-type Wound iron-core transformer high-tension coil, belongs to technical field of transformer manufacturing.
Background technology
Resin casting dry-type Wound iron-core transformer is with its excellent energy-saving effect, lower noise, excellent electrical strength and mechanical strength, more and more be subject to the favor in market, but the manufacturing issue of high-tension coil is made especially cast problem and is never well solved, limited the mass production capabilities of resin casting dry-type Wound iron-core transformer.Problem maximum in the manufacture of resin casting dry-type Wound iron-core transformer high-tension coil is: due to Wound iron-core transformer reasons in structure, make the rear bad demoulding of high-tension coil cast; In addition, because coil winding mould is to be assembled by a plurality of tile fragments, make to water the internal mold fluid sealant difficulty of injection molding, in casting process, resin easily escapes to tile fragment surface in watering the gap of interior intermode of injection molding, after resin solidification, demoulding difficulty is increased greatly.
Summary of the invention
The utility model provides a kind of resin casting dry-type Wound iron-core transformer high-tension coil, its special structural design, make in manufacturing process not can with winding former adhesion, conveniently stripped.
The utility model is realized by following scheme:
A kind of resin casting dry-type Wound iron-core transformer high-tension coil, this high-tension coil is cylindric, there is electromagnetic wire winding and be filled in electromagnetic wire winding inter-turn gap and the insulation resin thing that covers electromagnetic wire winding surface, inwall at high-tension coil, also have one deck glass cloth plate or PET plate insulating layer, this insulating barrier is bonded as one with insulation resin thing after casting resin.
The thickness of described glass cloth plate or PET plate is no more than 1mm.
Between described glass cloth plate or PET plate and insulation resin thing, be provided with one deck and steep in advance fiberglass gridding plate.
The insulation resin thing of described electromagnetic wire winding outer round surface has a boss, as the patch panel of high-tension coil, is embedded with the binding post of turnover lead-in wire and tap lead in patch panel, and each turnover lead-in wire and tap lead are electrically connected to binding post separately respectively.
The binding post of described tap lead is arranged on the middle part of patch panel, be divided into two row, along the radial arrangement of coil, and each binding post that coil upper semisection tap lead is corresponding is distributed in lastrow, each binding post that coil lower semisection tap lead is corresponding is distributed in next line, guarantees that each tap lead is not staggered.
The beneficial effect that the utility model produces is:
Resin casting dry-type Wound iron-core transformer high-tension coil of the present utility model, solved in background technology said in manufacturing process demoulding difficulty, easily leak resin and problem of environmental pollution, produce efficient, product high-quality.Mold Making of the present utility model is simple, insulation resin thing not can with winding former adhesion, conveniently stripped; Sealing convenient and reliable, transmission gear ring can pull down immediately then for next phase or next turnover after coil winding.Tap all with the "T"-shaped welding of wire turn of copper chaff and coiling, and draw vertically, processing ease and weld firmly, copper chaff bending is not simultaneously easily, take up space.Tap binding post level two row layouts, tap lead is staggered, and save space, and stop the short circuit accident between tap, thereby safe and reliable.The utility model is very suitable for the manufacture of resin casting dry-type Wound iron-core transformer high-tension coil, is beneficial to and uses on a large scale and promote.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model high-tension coil;
Fig. 2 is the end view of the utility model high-tension coil;
Fig. 3 is the vertical view of the utility model high-tension coil;
Fig. 4 is the utility model high-tension coil tapping sketch;
Fig. 5 is the utility model high-tension coil winding former and waters injection molding figure;
Fig. 6 is that the utility model waters the vertical view after injection molding peripheral board is installed;
Fig. 7 is that the utility model waters the vertical view before injection molding peripheral board is installed;
Number in the figure represents: 1-glass cloth plate or PET plate, 2-steep in advance fiberglass gridding plate, 3-electromagnetic wire, 4-layer insulation, 5-cushion block, 6-and steep in advance six screws, 11-transmission gear ring, 12-end plate, 14-coaming plate in fiberglass gridding plate, 7-resin, 8-binding post, 9-copper chaff, 10-.
Embodiment
As shown in Fig. 1～7, the utility model provides a kind of resin casting dry-type Wound iron-core transformer high-tension coil, that this high-tension coil is is cylindric, adopt multistage cylindrical coil structure, has electromagnetic wire 3 windings and is filled in electromagnetic wire 3 winding inter-turn gaps and covers the insulation resin thing on electromagnetic wire 3 winding surfaces.Winding by electromagnetic wire 3 layering coilings, formed and every layer of electromagnetic wire 3 on be equipped with layer insulation 4, and in high-tension coil, be provided with cushion block 5, guarantee that high-tension coil has fabulous electrical strength.
Innovation of the present utility model is: at the inwall of high-tension coil, also have one deck glass cloth plate or PET plate 1 insulating barrier, this insulating barrier is after casting resin 7, be bonded as one with insulation resin thing.
In this embodiment, glass cloth plate or PET plate 1 stick in the inner circle of high-tension coil, and its thickness is no more than 1mm.Glass cloth plate or PET plate 1 are when high-tension coil coiling, surround on winding former (high-tension winding watt mould), after high-tension coil coiling completes, again it is carried out to epoxy resin 7 cast, after epoxy resin 7 solidifies, glass cloth plate or PET plate 1 become one with high-tension coil pour mass, glass cloth plate or PET plate 1 double as cast internal mold.
The inner circle of high-tension coil and cylindrical are respectively arranged with pre-stain fiberglass gridding plate 2 and 6 and epoxy resin 7, steep in advance the surface that fiberglass gridding plate 2 and 6 surrounds high-tension coil, potting resin material in its grid.Pre-stain fiberglass gridding plate 2 and 6 is as in resin-cast process, and the circulation passage of resin 7 and exhaust passage, make resin 7 can be full of the space of watering between injection molding and coil windings.
The insulation resin thing of electromagnetic wire 3 winding outer round surface has a boss, as the patch panel of high-tension coil, is embedded with the binding post 8 of turnover lead-in wire and tap lead in patch panel, and each turnover lead-in wire and tap lead are electrically connected to binding post 8 separately respectively.
Tap lead adopts on the wire turn of copper chaff 9 overlap joint high-tension coils, is "T"-shaped welding, also draws vertically.
The binding post 8 of tap lead is arranged on the middle part of patch panel, be divided into two row, along the radial arrangement of coil, and each binding post 8 that coil upper semisection tap lead is corresponding is distributed in lastrow, each binding post 8 that coil lower semisection tap lead is corresponding is distributed in next line, guarantees that each tap lead is not staggered.
Below in conjunction with accompanying drawing, the utility model is elaborated.
The present embodiment is the resin casting dry-type Wound iron-core transformer high-tension coil of typical 10kV, four sections of drum type coil structures, by 0.5mm glass cloth plate or PET plate 1, steep fiberglass gridding plate 2, electromagnetic wire 3, layer insulation 4, cushion block 5 in advance, steep fiberglass gridding plate 6, epoxy resin 7, binding post 8, copper chaff 9 in advance and form.
When the present embodiment is implemented, first by shown in Fig. 5 can double dismounting transmission gear ring 11, be assembled into gear die with interior six screws 10 of ring-like winding former end plate 12 use that can double dismounting, be sleeved on again on iron core column and locate, install low pressure coiling watt mould 13 and form winding formers, installation high-voltage coiling watt mould 8 again after coiling low pressure winding.A 0.5mm glass cloth plate or PET plate 1 are surrounded on high-tension winding watt mould, with silicone adhesive or double faced adhesive tape, seam is cemented, with glass tape, the glass cloth plate holding or the rare grafting of PET plate 1 is tight, insert in the groove of winding former two end plates on glass cloth plate or PET plate 1 limit, two ends, and groove is filled up to sealing with glass cement.At a glass cloth plate or PET plate 1 wrapped pre-stain fiberglass gridding plate 2 again, then the winding method coiling multistage cylindrical layer winding of the high pressure winding of cast transformer routinely, but all tap leads are different from conventional method, this programme is all used all tap leads the "T"-shaped welding axial lead of wire turn of copper chaff 9 and coiling, referring to Fig. 1-Fig. 3, tap lead is drawn referring to Fig. 4.
After high pressure winding technique completes, pre-stain fiberglass gridding plate 6 of outsourcing carries out the binding post welding of each tap and first and last end again, then install and water injection molding external mold, binding post 8 level two row in the patch panel module of external mold are arranged to (tradition is arranged by vertical two row), binding post 8(A1, A3, the A5 of coil upper semisection tap) be distributed in a line above, binding post 8(A2, the A4 of lower semisection tap, A6) be distributed in a line below, as shown in Figure 1.Can guarantee so not occur between institute's tap lead any staggered phenomenon, thereby save space and stop the short circuit accident between tap.Then the broken ring module that soft coaming plate 14(0.8mm shown in Fig. 7 and following mirror face stainless steel thin plate being made is external mold) by the alternate of the good coil of coiling, coil is enclosed to bag respectively, by sealing strip, patch panel module, soft coaming plate 14 are sealed again to the double injection molding two end plates of watering of end plate at coil winding mould two ends with ring-like winding former end plate 12.Coil is sloughed peripheral board 14, patch panel module, winding former two end plates and winding former through super-dry, cast, after solidifying, and previous wrapped 0.5mm glass cloth plate or PET plate 1 stayed the part that coil inwall becomes coil.
Claims (5)
1. a resin casting dry-type Wound iron-core transformer high-tension coil, this high-tension coil is cylindric, there is electromagnetic wire winding and be filled in electromagnetic wire winding inter-turn gap and the insulation resin thing that covers electromagnetic wire winding surface, it is characterized in that: at the inwall of high-tension coil, also have one deck glass cloth plate or PET plate insulating layer, this insulating barrier is bonded as one with insulation resin thing after casting resin.
2. high-tension coil according to claim 1, is characterized in that: the thickness of described glass cloth plate or PET plate is no more than 1mm.
3. high-tension coil according to claim 1, is characterized in that: between described glass cloth plate or PET plate and insulation resin thing, be provided with one deck and steep in advance fiberglass gridding plate.
4. high-tension coil according to claim 1, it is characterized in that: the insulation resin thing of described electromagnetic wire winding outer round surface has a boss, patch panel as high-tension coil, in patch panel, be embedded with the binding post of turnover lead-in wire and tap lead, each turnover lead-in wire and tap lead are electrically connected to binding post separately respectively.
5. high-tension coil according to claim 4, it is characterized in that: the binding post of described tap lead is arranged on the middle part of patch panel, be divided into two row, along the radial arrangement of coil, and each binding post that coil upper semisection tap lead is corresponding is distributed in lastrow, each binding post that coil lower semisection tap lead is corresponding is distributed in next line, guarantees that each tap lead is not staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320606264.2U CN203456259U (en) | 2013-09-29 | 2013-09-29 | High tension coil of resin cast dry wound core transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320606264.2U CN203456259U (en) | 2013-09-29 | 2013-09-29 | High tension coil of resin cast dry wound core transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456259U true CN203456259U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320606264.2U Expired - Fee Related CN203456259U (en) | 2013-09-29 | 2013-09-29 | High tension coil of resin cast dry wound core transformer |
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| CN (1) | CN203456259U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485217A (en) * | 2014-12-31 | 2015-04-01 | 上海和鸣变压器有限公司 | Photovoltaic superconducting dry-type transformer |
| CN106373747A (en) * | 2016-11-14 | 2017-02-01 | 苏州安泰变压器有限公司 | Multi-tap epoxy pouring type air-core reactor |
| CN106847482A (en) * | 2017-03-23 | 2017-06-13 | 江西特种变压器厂 | One kind has transverse air channel high pressure molded coil transformer and its manufacture method |
| CN112885564A (en) * | 2021-01-12 | 2021-06-01 | 江苏瑞恩电气股份有限公司 | High-safety resin-making steam-injection insulation transformer |
-
2013
- 2013-09-29 CN CN201320606264.2U patent/CN203456259U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485217A (en) * | 2014-12-31 | 2015-04-01 | 上海和鸣变压器有限公司 | Photovoltaic superconducting dry-type transformer |
| CN104485217B (en) * | 2014-12-31 | 2016-08-17 | 上海和鸣变压器有限公司 | Photovoltaic superconduction dry-type transformer |
| CN106373747A (en) * | 2016-11-14 | 2017-02-01 | 苏州安泰变压器有限公司 | Multi-tap epoxy pouring type air-core reactor |
| CN106373747B (en) * | 2016-11-14 | 2019-02-26 | 苏州安泰变压器有限公司 | A kind of multi-tap epoxy casting type air reactor |
| CN106847482A (en) * | 2017-03-23 | 2017-06-13 | 江西特种变压器厂 | One kind has transverse air channel high pressure molded coil transformer and its manufacture method |
| CN112885564A (en) * | 2021-01-12 | 2021-06-01 | 江苏瑞恩电气股份有限公司 | High-safety resin-making steam-injection insulation transformer |
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| 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 |
Granted publication date: 20140226 Termination date: 20180929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |