CN205028762U - Dry transformer - Google Patents
Dry transformer Download PDFInfo
- Publication number
- CN205028762U CN205028762U CN201520826689.3U CN201520826689U CN205028762U CN 205028762 U CN205028762 U CN 205028762U CN 201520826689 U CN201520826689 U CN 201520826689U CN 205028762 U CN205028762 U CN 205028762U
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- Prior art keywords
- coil
- transformer
- iron core
- stay
- cushion block
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Abstract
The utility model discloses a power equipment technical field is a dry transformer particularly, and including casing and transformer body, the transformer body includes iron core and coil, and the coil includes low voltage coil and high -pressure coil, between iron core and the low voltage coil, between the low voltage coil layer and the high -pressure coil turn to turn all be equipped with the aramid paper insulating layer, the packing has heat -conducting medium between iron core and the casing, the iron core structure that full juxtaposition seam, the coincide of the step by step lamination mode of ladder formed for grain orientation cold rolled silicon steel piece adopts, it is fixed that transformer core passes through the ligature of polyester area, and transformer core's outward appearance is equipped with high temperature insulation lacquer layer, be equipped with the radiator on the casing lateral wall, the radiator shape is for having the inflation system of one's own, and the radiator adopts prism energy storage formula fin, and the fin cross section is inflation wave pattern, divides into the fin cooling tube of a plurality of mutual UNICOM side by side the utility model has the characteristics of the transformer is efficient, dispel the heat, insulating properties and the thermal resistance is little, it is slow to heat up, dispel the heat, small and energy -conserving.
Description
Technical field
The utility model relates to electrical equipment technical field, specifically a kind of dry-type transformer.
Background technology
Transformer is equipment line voltage being converted to daily required voltage, and along with the develop rapidly that the whole nation is economic, the total number of units of the transformer used in all trades and professions also increases progressively thereupon, but transformer is also the equipment that in electric power system, energy consumption is large.According to estimates, the total losses of China's transformer account for about 10% of system gross generation, as loss often reduces by 1%, can save over ten billion degree electricity every year.For this reason, adopt energy saving transformer to substitute conventional High-loses Transformer, play very large effect by the energy-saving and cost-reducing of the whole society, save construction area simultaneously, more safe and reliable, provide strong technical support for building green substation.
But the Insulation Problems of dry-type transformer is the special concern of researcher institute, in general dry-type transformer is in order to ensure enough electrical strengths, usually the distance of winding in dry-type transformer can be increased, but the volume of dry-type transformer will be made like this to increase accordingly, increase cost, insulation effect is undesirable; And due to the restriction by mechanical processing technique, having space in the contact-making surface of iron core and housing, quick heating when causing dry-type transformer to work, thermal resistance is large, and radiating effect is bad.Transformer is in running, and the loss himself produced can be divided into no-load loss and load loss.The copper loss composition that no-load loss produces primarily of iron loss, dispersion loss and exciting curent.Load loss is the loss produced on transformer coil resistance by load current, square being directly proportional of its size and load current.Because transformer is in running status for a long time, reduce its loss and transformer energy saving is had great importance.In addition, existing transformer adopts full copper or full aluminum coil manufacture, and the coil of full copper manufactures transformer, and the little efficiency of resistance is high, but the density of copper is large, and cost is high.The coil of full aluminium manufactures transformer, and advantage is that aluminum line mass is light, but relative and copper conductor, and the resistance of aluminum steel is high, therefore the transformer of equal-wattage, and its volume of aluminum coil is large, and be not easy to use, the thermal effect of generation is large.
Utility model content
The purpose of this utility model is for above-mentioned technology Problems existing, provides a kind of dry-type transformer, has that power transformation efficiency is high, good heat dissipation, insulation property and thermal resistance is little, it is slow to heat up, good heat dissipation, volume are little and energy-conservation feature.
For achieving the above object, the technical solution adopted in the utility model is: a kind of dry-type transformer, comprise housing and transformer body, described transformer body comprises iron core and coil, described coil comprises low-voltage coil and high-tension coil, between described iron core and low-voltage coil, described low-voltage coil interlayer and high-tension coil turn-to-turn be equipped with aramid paper insulating barrier, is filled with heat-conducting medium between described iron core and housing; Described iron core is the structure that grain orientation cold-reduced silicon sheet adopts full bias seam, the lamination process of ladder stepping is formed by stacking, and transformer core is fixed by polyester belt colligation, and the appearance of transformer core is provided with high temperature insulation enamelled coating; Described hull outside wall is provided with radiator, and radiator shape is for having intumescent system of one's own, and radiator adopts prismatic energy storage type fin, and described fin cross section is expansion wave pattern, fin is divided into the radiating tube of several mutual UNICOMs side by side.
Further, the upper and lower both sides of described iron core are respectively arranged with iron yoke cushion block, and iron yoke cushion block is pressed on low-voltage coil and high-tension coil by rubber slab.
Further, described heat-conducting medium adopts heat conductive silicon grease material.
Further, described high-tension coil and low-voltage coil are disc coil new construction, adopt shaping cardboard cylinder and be uniformly arranged and fixed at several stays of the outer circumference surface of shaping cardboard cylinder, the length direction of stay is consistent with the length direction of shaping cardboard cylinder, form circular coil skeleton, each stay is evenly provided with several cushion blocks along its length, the height of the cushion block of all stays is consistent, stay is wound with a disc coil around shaping cardboard cylinder between upper and lower two-layer cushion block, separate with cushion block between adjacent two pieces of disc coils, the interior pad insulation strip of a circle 1mm thickness is accompanied between stay and each disc coil.
Further: stay cross section is T-shaped, cushion block is provided with the T-slot corresponding with stay, and cushion block is enclosed within stay by T-slot.
Advantageous Effects of the present utility model is:
(1) the utility model by between iron core and low-voltage coil, low-voltage coil interlayer and high-tension coil turn-to-turn be equipped with aramid paper insulating barrier, make it have good insulation effect, and volume is little, production cost is low, gap location between iron core and containment vessel fills heat-conducting medium, makes that its thermal resistance is little, quick heating, perfect heat-dissipating;
(2) fin two lateral plates design journey wave pattern of the radiator in the utility model, the lateral plates of original fin is dull and stereotyped, because the heat radiation oil temperature of fin in the side radiating fin of transformer of coil is high, far-end heat radiation oil temperature is low, heat radiation oil is in fin in upper and lower cyclic process, the heat radiation oil of temperature inequality circulates disorder up and down, makes radiating effect bad.And adopt the lateral plates of undaform, the heat radiation oil content in fin is become relatively independent pipe up and down, the upper current downflow that the heat radiation oil being conducive to different temperatures can be relatively independent, accelerate the radiating effect of radiator;
(3) transformer iron-core structure that the utility model adopts increases seam area, and the magnetic hysteresis loss of seam crossing and magnetic resistance reduce, and is conducive to ensureing no-load performance, reduces no-load current and no-load loss; In addition, the iron core binding fixing structure that the utility model adopts also improves whole core structure mechanical strength effectively.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, 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.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of fin in Fig. 1;
Fig. 3 is the A-A structural representation of fin in Fig. 2;
Fig. 4 is the utility model loop construction schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As Figure 1-3, solve the problem in background technology, a kind of dry-type transformer, comprise housing 2 and transformer body, transformer body comprises iron core 2 and coil, coil comprises low-voltage coil 5 and high-tension coil 4, and between iron core and low-voltage coil, low-voltage coil interlayer and high-tension coil turn-to-turn be equipped with aramid paper insulating barrier 3, is filled with heat-conducting medium 6 between iron core and housing; Iron core is the structure that grain orientation cold-reduced silicon sheet adopts full bias seam, the lamination process of ladder stepping is formed by stacking, and transformer core is fixed by polyester belt colligation, and the appearance of transformer core is provided with high temperature insulation enamelled coating; Hull outside wall is provided with radiator 7, and radiator shape is for having intumescent system of one's own, and radiator adopts prismatic energy storage type fin, and fin cross section is expansion wave pattern, fin is divided into the radiating tube of several mutual UNICOMs side by side.
In order to improve stability and the overall mechanical strength of transformer, the upper and lower both sides of iron core are respectively arranged with iron yoke cushion block, and iron yoke cushion block is pressed on low-voltage coil and high-tension coil by rubber slab.
Wherein, heat-conducting medium adopts heat conductive silicon grease material.
As shown in Figure 4, high-tension coil and low-voltage coil are disc coil new construction, adopt shaping cardboard cylinder 8 and be uniformly arranged and fixed at several stays 9 of the outer circumference surface of shaping cardboard cylinder, the length direction of stay is consistent with the length direction of shaping cardboard cylinder, form circular coil skeleton, each stay is evenly provided with several cushion blocks 10 along its length, the height of the cushion block of all stays is consistent, stay is wound with a disc coil 11 around shaping cardboard cylinder between upper and lower two-layer cushion block, separate with cushion block between adjacent two pieces of disc coils, the interior pad insulation strip 12 of a circle 1mm thickness is accompanied between stay and each disc coil.
Wherein, stay cross section is T-shaped, and cushion block is provided with the T-slot corresponding with stay, and cushion block is enclosed within stay by T-slot.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. dry-type transformer, comprise housing and transformer body, described transformer body comprises iron core and coil, described coil comprises low-voltage coil and high-tension coil, it is characterized in that: between described iron core and low-voltage coil, described low-voltage coil interlayer and high-tension coil turn-to-turn be equipped with aramid paper insulating barrier, is filled with heat-conducting medium between described iron core and housing; Described iron core is the structure that grain orientation cold-reduced silicon sheet adopts full bias seam, the lamination process of ladder stepping is formed by stacking, and transformer core is fixed by polyester belt colligation, and the appearance of transformer core is provided with high temperature insulation enamelled coating; Described hull outside wall is provided with radiator, and radiator shape is for having intumescent system of one's own, and radiator adopts prismatic energy storage type fin, and described fin cross section is expansion wave pattern, fin is divided into the radiating tube of several mutual UNICOMs side by side.
2. dry-type transformer according to claim 1, it is characterized in that: the upper and lower both sides of described iron core are respectively arranged with iron yoke cushion block, iron yoke cushion block is pressed on low-voltage coil and high-tension coil by rubber slab.
3. dry-type transformer according to claim 1, is characterized in that: described heat-conducting medium adopts heat conductive silicon grease material.
4. dry-type transformer according to claim 1, it is characterized in that: described coil is disc coil new construction, adopt shaping cardboard cylinder and be uniformly arranged and fixed at several stays of the outer circumference surface of shaping cardboard cylinder, the length direction of stay is consistent with the length direction of shaping cardboard cylinder, form circular coil skeleton, each stay is evenly provided with several cushion blocks along its length, the height of the cushion block of all stays is consistent, stay is wound with a disc coil around shaping cardboard cylinder between upper and lower two-layer cushion block, separate with cushion block between adjacent two pieces of disc coils, the interior pad insulation strip of a circle 1mm thickness is accompanied between stay and each disc coil.
5. dry-type transformer according to claim 4, it is characterized in that: stay cross section is T-shaped, cushion block is provided with the T-slot corresponding with stay, and cushion block is enclosed within stay by T-slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520826689.3U CN205028762U (en) | 2015-10-23 | 2015-10-23 | Dry transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520826689.3U CN205028762U (en) | 2015-10-23 | 2015-10-23 | Dry transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028762U true CN205028762U (en) | 2016-02-10 |
Family
ID=55261277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520826689.3U Expired - Fee Related CN205028762U (en) | 2015-10-23 | 2015-10-23 | Dry transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205028762U (en) |
-
2015
- 2015-10-23 CN CN201520826689.3U patent/CN205028762U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: High-low voltage whole coil dry transformer Effective date of registration: 20161116 Granted publication date: 20160210 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Kunming branch Pledgor: KUNMING YAOLONG CONFIDENCE TRANSFORMER MANUFACTURING CO., LTD. Registration number: 2016530000019 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190104 Granted publication date: 20160210 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Kunming branch Pledgor: KUNMING YAOLONG CONFIDENCE TRANSFORMER MANUFACTURING CO., LTD. Registration number: 2016530000019 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20201023 |