CN2641784Y - Dry type transformer of resin casted insulation winding iron core - Google Patents
Dry type transformer of resin casted insulation winding iron core Download PDFInfo
- Publication number
- CN2641784Y CN2641784Y CN 03273850 CN03273850U CN2641784Y CN 2641784 Y CN2641784 Y CN 2641784Y CN 03273850 CN03273850 CN 03273850 CN 03273850 U CN03273850 U CN 03273850U CN 2641784 Y CN2641784 Y CN 2641784Y
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- iron core
- resin
- type transformer
- dry
- coil
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Abstract
The utility model discloses a dry-type transformer of a resin-molded insulated rolled iron core, and the dry-type transformer comprises an iron core, a skeleton tube, a winding, and insulated material. The iron core is a rolled iron core, the skeleton tube made of epoxide resin and composed of two hemicyclic podetiums is sleeved outside the iron core. The winding is coiled on the skeleton tube and molded by the epoxide resin to be insulated and enveloped. The dry-type transformer of the resin molded insulated rolled iron core described in the utility model has both advantages of the rolled iron core transformer and the epoxide resin molded insulated dry-style transformer, and has characteristics that the energy conservation effect is significant, the performance is good, the running is reliable, the volume is small, the weight is light, the cracking is not appeared as well as the moisture resistance and the fire resistance are obtained.
Description
Technical field
The utility model relates to the power transmission and transformation field, relates in particular to a kind of resin-cast insulation rolled iron core dry-type transformer.
Background technology
Transformer is the equipment that carries out voltage transformation, is widely used in the power transmission and transformation field.Because use amount is big, long operational time, so transformer is selecting and using all to exist huge energy-saving potential, and market and users also press for not high but the energy-economic transformer product that loss and noise are lower of price.And each transformer production producer uses new material, new technology is constantly developed and has developed the loss and the lower energy-economic transformer of noise of various versions.Wherein, Wound iron-core transformer is exactly outstanding at present a kind of energy saving transformer kind.It is compared with traditional laminated core, have plurality of advantages such as no-load loss is little, exciting current is little, noise is little, manufacturing procedure is few, material saving, and occurred oil immersed type Wound iron-core transformer product on the market and adopted vacuum pressure impregnation and the H level dry-type transformer of NOMEX paper manufacturing.But, though this type of transformer has possessed lot of advantages, impact aspect such as insulation level at the distribution of anti-short circuit capability and lightning impulse overvoltage ripple and benchmark still not as the poured with epoxy resin insulating dry type transformer, and its main raw material(s) relies on import, cost is too high, is unfavorable for applying.
Summary of the invention
The purpose of this utility model is at the problems referred to above, provides a kind of rational in infrastructure, integrates the poured with epoxy resin insulation rolled iron core dry-type transformer and the manufacture method thereof of the advantage of Wound iron-core transformer and poured with epoxy resin insulating dry type transformer.
For achieving the above object, the technical solution of the utility model is as follows: resin-cast insulation rolled iron core dry-type transformer comprises iron core, tube of skeleton, coil, insulating material; Described iron core is unshakable in one's determination for volume, make by epoxy resin and be placed in outside it by the tube of skeleton that two semi-ring cylinders are formed, coil winding is on tube of skeleton, and coil insulate with poured with epoxy resin and seals.
The manufacture method of above-mentioned resin-cast insulation rolled iron core dry-type transformer can be carried out according to following steps:
A, will roll up iron core and be installed on the volume spooling equipment unshakable in one's determination, on the volume iron core, the tube of skeleton of being made by epoxy resin will be installed again;
B, coil winding, the Wound iron-core transformer method for winding carries out routinely;
Volume parts unshakable in one's determination such as C, installation folder, pad pin, auxiliary clamp, and make the volume iron core leave the spooling equipment setting;
D, installation casting mold; This casting mold comprises the casting mold base plate be made up of two half blocks, by external mold, lead-out wire boss cover plate and top board that two curved plates are formed, the sprue gate is opened on the casting mold base plate.
The vacuum pouring equipment that E, the workpiece that will finish D step are sent into German Reinhard Heydrich (HEDRICH) company carries out sending into baker again after drying and the vacuum pouring, is cured by the curve that is heating and curing of process stipulation;
F, the demoulding, polishing shaping, the assembling of device body, wire bonds, general assembly, manufacture test, outward appearance are handled, and get finished product.
Above-mentioned volume spooling equipment unshakable in one's determination, close with the coil-winding device structure of existing oil immersed type Wound iron-core transformer, be horizontal coil winding machine, its structure is: on the chassis is on the rectangle fixed platform, about place the surface rails that two elevations angle are 8 degree, left rail is fixed, its outside is covered with electric, power and transmission device, right guide rail is movable, pass through hand screw, its move left and right in prescribed limit of may command is with the requirement of the volume that satisfies different capabilities transformer span unshakable in one's determination (window height).Install respectively on the inclined-plane of two guide rails and slide planker synchronously up and down, side-lower studs with tooth bar in the planker.The volume iron core is placed on the planker, and the coiling main shaft then traverses the below at middle part between two guide rails, with connecting framework gear and planker tooth bar.Guide rail top configuration skeleton centring means.The coil-winding operation is finished by electric cooperation control, and the coil turn counter is housed.
Resin-cast insulation rolled iron core dry-type transformer described in the utility model has the advantage of Wound iron-core transformer and poured with epoxy resin insulating dry type transformer concurrently, and it is remarkable to possess energy-saving effect, function admirable, reliable, characteristics such as volume is little, in light weight, do not ftracture, and also have excellent moisture resistance and anti-flammability.
Description of drawings
Fig. 1 is the cross-sectional structural representation of a volume stem unshakable in one's determination of resin-cast insulation rolled iron core dry-type transformer described in the utility model;
Fig. 2 is an end view of a semi-ring cylinder of tube of skeleton described in the utility model;
Fig. 3 is the structural representation that tube of skeleton described in the utility model is made up of two semi-ring pole piece splicings;
Fig. 4 is the structural representation that casting mold base plate described in the utility model is fastened and connected and is formed by two half blocks;
Fig. 5 is that the A of Fig. 4 is to the sectional structure schematic diagram;
One end view of a curved plate of Fig. 6 external mold described in the utility model;
Fig. 7 is the structural representation that external mold described in the utility model is made up of two curved plate splicings;
Fig. 8 is an end view of lead-out wire boss cover plate described in the utility model;
Fig. 9 is that the B of Fig. 8 is to the sectional structure enlarged diagram;
Figure 10 is the structural representation one of the utility model assembling casting mold;
Figure 11 is the structural representation two of the utility model assembling casting mold.
Now the utility model is described in further detail in conjunction with the accompanying drawings and embodiments:
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, resin-cast insulation rolled iron core dry-type transformer described in the utility model, form by volume iron core 1, tube of skeleton 2, low-voltage coil 31, high-tension coil 32, air flue groove 4 insulating material and other parts, that make by epoxy resin and be placed in by the tube of skeleton 2 that two semi-ring pole pieces 21 are formed on each stem of volume unshakable in one's determination 1, coil 3 is wound on the tube of skeleton 2, and low-voltage coil 31, high-tension coil 32 usefulness epoxy resin are poured into a mould and sealed.
Above-mentioned volume iron core can be plane volume iron core or three dimensional wound core, and plane volume iron core can be that the frame volume is unshakable in one's determination, and frame volume iron core can be that two frame volumes of band housing are unshakable in one's determination.
When above-mentioned resin-cast insulation rolled iron core dry-type transformer is made, because the iron core that rolls is case type, therefore when coiling, winding tube of skeleton and volume with bayonet spooling equipment gear ring unshakable in one's determination is designed to two semi-circular portions, bonding being enclosed within on the volume stem unshakable in one's determination and with gear ring of tube of skeleton dressed up one, carry out and start and be fixed on the anchor clamps of private volume spooling equipment unshakable in one's determination, begin the coiling low-voltage line then, interlayer and transposition are leveled up with the insulating material glass fibre.If when the low-voltage coil air flue is arranged, should put the air flue groove on request well, and colligation is smooth.After the low-voltage coil coiling is good, bends and lift one's head and also be fixed in the anchor clamps.In the low-voltage coil winding process, the interior external diameter of reply tube of skeleton, first floor line or air flue groove detects and record, and notes in time being adjusted to and meet the requirements, low-voltage coil around intact and bandage external insulation after, low-voltage coil is that coiling is finished.Detect, and place main empty path air flue groove between high and low pressure on request, it is smooth to fill and lead up colligation afterwards with the insulating material glass fibre.
After main empty path air flue groove placement operation between low-voltage coil coiling and high and low pressure is finished, beginning coiling high-tension coil, level up with glass fibre at interlayer and section insulation place, lifts one's head and the correctly arrangement on request of each tap, bandages external insulation at last.Weld and lift one's head and each tap.Present embodiment adopts the thin insulating structure, and the interior external insulation of coil is 2 millimeter, and therefore better heat radiating effect is arranged.
On the volume iron core of sealing, behind the good high and low pressure coil of coiling, load onto volume parts unshakable in one's determination such as folder, pad pin, auxiliary clamp, after transformer hung out spooling equipment erect.
As Figure 10, shown in Figure 11, on the auxiliary clamp that is fixed on the lower clamping piece, install the casting mold base plate of forming by two half blocks 51 5 as Fig. 4, each coil windings shown in Figure 5, plug hole 52 is arranged on the casting mold base plate 5.Utilize tube of skeleton to be internal mold, install again as Fig. 6, shown in Figure 7 splice the external mold of forming 6, on external mold 6, install as Fig. 8, lead-out wire boss cover plate 7 shown in Figure 9, and cover top board 8 by two curved plates 61.Utilize upper clamping piece and screw rod that inside and outside mould is pressed on the casting mold base plate 5 tightly, and encapsulation process is carried out in all slits with epoxy resin.
After finishing above-mentioned operation, workpiece is sent in the vacuum pouring equipment of German HEDRICH company and carried out vacuumize and epoxide resin vacuum cast.After the epoxide resin vacuum cast, coil is sealed, the curve of sending into again in the baker in accordance with regulations that is heating and curing is cured.
Behind coil curing and the natural cooling, after operations such as the demoulding, polishing shaping, the assembling of device body, wire bonds, general assembly, manufacture test, outward appearance processing, get finished product.
Inject mould and the coil windings behind the curing molding on request through pure epoxy resin in pressurization under the vacuum state, its interlayer, intersegmental, turn-to-turn all can soak into epoxy resin, the closely combination of lead and glass fibre, form firm rigid structure, have high-intensity mechanical performance and good electric property, good moving, thermally-stabilised ability are arranged.And the thermal coefficient of expansion of used copper is approaching substantially in the compound inslation thermal coefficient of expansion that solidify to form of resin and other insulating material and the coil windings, there are not transformer coil windings conductor that produces owing to expanding with heat and contract with cold in service and the mechanical stress between the insulating material, fundamentally eliminated crack performance.
Claims (7)
1, resin-cast insulation rolled iron core dry-type transformer, comprise iron core, tube of skeleton, coil, insulating material, it is characterized in that: described iron core is unshakable in one's determination for volume, that make by epoxy resin and be placed in outside it by the tube of skeleton that two semi-ring pole pieces are formed, coil winding is on tube of skeleton, and coil is sealed with the poured with epoxy resin insulation.
2, resin-cast insulation rolled iron core dry-type transformer according to claim 1, it is characterized in that: described insulating material is a glass fibre.
3, resin-cast insulation rolled iron core dry-type transformer according to claim 1, it is characterized in that: described volume iron core is plane volume iron core or three dimensional wound core.
4, resin-cast insulation rolled iron core dry-type transformer according to claim 3 is characterized in that: described plane volume iron core is that the frame volume is unshakable in one's determination.
5, resin-cast insulation rolled iron core dry-type transformer according to claim 4 is characterized in that: described frame volume iron core is that two frame volumes of band housing are unshakable in one's determination.
6, resin-cast insulation rolled iron core dry-type transformer according to claim 1, it is characterized in that: described coil is made up of low-voltage coil and high-tension coil.
7, resin-cast insulation rolled iron core dry-type transformer according to claim 6 is characterized in that: be provided with the air flue groove between low-voltage coil and the high-tension coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03273850 CN2641784Y (en) | 2003-08-26 | 2003-08-26 | Dry type transformer of resin casted insulation winding iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03273850 CN2641784Y (en) | 2003-08-26 | 2003-08-26 | Dry type transformer of resin casted insulation winding iron core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2641784Y true CN2641784Y (en) | 2004-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03273850 Expired - Fee Related CN2641784Y (en) | 2003-08-26 | 2003-08-26 | Dry type transformer of resin casted insulation winding iron core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2641784Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834058B (en) * | 2010-05-12 | 2013-01-02 | 济南特变电气有限公司 | Fully-closed ceramic sintered dry-type transformer coil and manufacturing method thereof |
| CN103117168A (en) * | 2011-11-16 | 2013-05-22 | 昆山市特种变压器制造有限公司 | Winding method of pouring type segmental multilayer cylinder type coil |
| CN107331493A (en) * | 2017-07-07 | 2017-11-07 | 广州飞天电气科技有限公司 | A kind of outdoor dry type transformer |
-
2003
- 2003-08-26 CN CN 03273850 patent/CN2641784Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834058B (en) * | 2010-05-12 | 2013-01-02 | 济南特变电气有限公司 | Fully-closed ceramic sintered dry-type transformer coil and manufacturing method thereof |
| CN103117168A (en) * | 2011-11-16 | 2013-05-22 | 昆山市特种变压器制造有限公司 | Winding method of pouring type segmental multilayer cylinder type coil |
| CN107331493A (en) * | 2017-07-07 | 2017-11-07 | 广州飞天电气科技有限公司 | A kind of outdoor dry type transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |