CN109524196A - A kind of power transformer - Google Patents
A kind of power transformer Download PDFInfo
- Publication number
- CN109524196A CN109524196A CN201710843866.2A CN201710843866A CN109524196A CN 109524196 A CN109524196 A CN 109524196A CN 201710843866 A CN201710843866 A CN 201710843866A CN 109524196 A CN109524196 A CN 109524196A
- Authority
- CN
- China
- Prior art keywords
- iron core
- power transformer
- shell
- winding
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The present invention provides a kind of power transformer, including shell and iron core, the iron core is located in the shell；Coil windings are externally provided in the iron core；Heat release hole is offered in the shell side, fan is equipped in the shell medial surface；The coil windings are followed successively by the high-tension coil, intermediate voltage winding and low-voltage coil of setting.Power transformer of the invention is relatively reliable compared with the prior art, and cost is lower.
Description
Technical field
The present invention relates to machinery equipment field, and in particular to a kind of power transformer.
Background technique
Transformer be for convert alternating voltage, electric current and transmit the static electrical equipment of one kind of AC energy.It is
Electric energy transmitting is realized according to the principle of electromagnetic induction.Transformer can be divided into power transformer, testing transformer, instrument with regard to its purposes
It is the necessaries of power transmission and distribution, power consumer distribution with transformer and the transformer of specific use: power transformer；Test
The equipment that transformer carries out pressure-resistant (boosting) test to electrical equipment；Instrument transformer as distribution system electric measurement, after
Electric protection is used (PT, CT)；The transformer of specific use has smelting furnace transformer, welding transformer, electrolytic rectifier to become
Depressor, small-sized adjustable transformer etc..
Transformer is a kind of alternating-current electric equipment to be worked by electromagnetic induction, and therefore, it must have as magnetic circuit
Iron core；There must be at least two different windings of usual the number of turns (i.e. voltage rating)；Due between winding and its over the ground
There are potential differences, thus it must have corresponding insulation system etc..This is to say, these three bases of iron core, winding, insulation system
This part is all indispensable component part of any transformer.
Power transformer is a kind of static electrical equipment, is for the alternating voltage (electric current) of a certain numerical value is become frequency
The equipment of the different voltage (electric current) of the identical another or several numerical value of rate.When first winding passes to alternating current, just generate
The magnetic flux of the magnetic flux of alternation, alternation is acted on by iron core magnetic conduction, and AC electromotive force is just induced in secondary winding.Secondary induction
The height of electromotive force is related with the number of a secondary winding the number of turns, i.e., voltage swing is directly proportional to the number of turns.Main function is transmission
Electric energy, therefore, rated capacity are its major parameters.Rated capacity is the usual value of a performance power, it is characterization transmission
The size of electric energy, is indicated with kVA or MVA, when applying voltage rating to transformer, is determined according to it under prescribed conditions not
More than the rated current of temperature limit.More energy-efficient power transformer is Amorphous Alloy Distribution Transformer, and maximum is excellent
Point is that no-load loss value spy is low.It can finally ensure no-load loss value, be that the core to be considered in entire design process is asked
Topic.When product structure is arranged, except amorphous alloy core to be considered itself is not in addition to by the effect of external force, while also when calculating
The characterisitic parameter of the accurate Rational choice amorphous alloy of palpus.
Power transformer cost in the prior art is too high and unreliable.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of power transformer.
Technical solution:
A kind of power transformer, including shell and iron core, the iron core are located in the shell；Coil is externally provided in the iron core
Winding；Heat release hole is offered in the shell side, fan is equipped in the shell medial surface；The coil windings are followed successively by
High-tension coil, intermediate voltage winding and the low-voltage coil of setting.
The winding coil uses Concentrical winding.
The iron core is used with 0.35 millimeter, and the silicon steel sheet of surface insulation is made.
Insulating materials is additionally provided between the iron core and the shell.
The insulating materials is electroceramics, electrical laminated plank or insulating board.
The utility model has the advantages that
Power transformer of the invention is relatively reliable compared with the prior art, and cost is lower.
Specific embodiment
The present invention will be further explained below.
Power transformer of the invention includes shell and iron core, and the iron core is located in the shell；Outside the iron core
Equipped with coil windings；Heat release hole is offered in the shell side, fan is equipped in the shell medial surface.Outside iron core according to
Secondary setting high-tension coil, intermediate voltage winding and low-voltage coil.
Iron core is most basic one of the building block of transformer, is the magnetic circuit part of transformer, transformer first and second around
Group improves magnetic circuit magnetic capacity all on iron core and reduces eddy-current loss in iron core, and iron core usually uses 0.35 millimeter, and surface is exhausted
The silicon steel sheet of edge is made.Iron core divides iron core column and iron yoke two parts, and winding is covered in iron core column, and iron yoke connects iron core, makes
Formation closed magnetic circuit.
It causes to discharge to prevent in operation the metal parts induction suspending current potential such as transformer core, folder, pressing ring excessively high,
These components are both needed to single-point grounding.Generally iron core and folder are led to respectively in order to facilitate test and trouble shoot, high-power transformer
It crosses two casings and draws ground connection.
Winding is also one of most basic component of transformer.It is the circuit part of transformer, general insulation paper bag
The copper wire or aluminum steel wrapped up in are coiled into.Be connected to high-voltage fence winding be high-voltage winding, be connected to low voltage electric network winding be low pressure around
Group.
Power transformer uses Concentrical winding.It is that high and low pressure winding is fitted concentrically in iron core column.Usual low pressure
Winding is close to iron core, and high-voltage winding is on the outside.This mainly readily satisfies from insulating requirements and is convenient for drawing high-voltage tap changer
Come what is considered.Transformer high-voltage winding has lateral oil duct between the disk (cake) and disk (cake) of winding frequently with continuous structure, rises
Insulation, cooling, heat spreading function.
The insulating materials of transformer is mainly electroceramics, electrical laminated plank and insulating board.
The fan includes rotor, stator and control circuit.Wherein rotor is made of magnet, flabellum and axis；Stator is by having
Silicon steel sheet, coil and bearing composition；Control circuit is connected by IC induced magnet via its coil of circuit control and is generated internal
Excitation rotates rotor.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of power transformer, it is characterised in that: including shell and iron core, the iron core is located in the shell；Described
Iron core is externally provided with coil windings；Heat release hole is offered in the shell side, fan is equipped in the shell medial surface；It is described
Coil windings are followed successively by the high-tension coil, intermediate voltage winding and low-voltage coil of setting.
2. power transformer according to claim 1, it is characterised in that: the winding coil uses Concentrical winding.
3. power transformer according to claim 1, it is characterised in that: the iron core is used with 0.35 millimeter, and surface is exhausted
The silicon steel sheet of edge is made.
4. power transformer according to claim 1, it is characterised in that: be additionally provided between the iron core and the shell
Insulating materials.
5. power transformer according to claim 3, it is characterised in that: the insulating materials is electroceramics, electrical laminated wood
Plate or insulating board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710843866.2A CN109524196A (en) | 2017-09-19 | 2017-09-19 | A kind of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710843866.2A CN109524196A (en) | 2017-09-19 | 2017-09-19 | A kind of power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109524196A true CN109524196A (en) | 2019-03-26 |
Family
ID=65768351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710843866.2A Withdrawn CN109524196A (en) | 2017-09-19 | 2017-09-19 | A kind of power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109524196A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050040924A1 (en) * | 2003-08-21 | 2005-02-24 | Laboube Timothy | Apparatus and method for cooling electrical transformers |
| CN203871158U (en) * | 2014-06-03 | 2014-10-08 | 乐清市鸣川电器有限公司 | SG three-phase dry type transformer |
| CN106098316A (en) * | 2016-07-27 | 2016-11-09 | 中电电气(江苏)股份有限公司 | A kind of transformator air channel structure |
| CN206148246U (en) * | 2016-09-21 | 2017-05-03 | 东莞市宝诚电源科技有限公司 | Three -phase transformer for photovoltaic |
-
2017
- 2017-09-19 CN CN201710843866.2A patent/CN109524196A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050040924A1 (en) * | 2003-08-21 | 2005-02-24 | Laboube Timothy | Apparatus and method for cooling electrical transformers |
| CN203871158U (en) * | 2014-06-03 | 2014-10-08 | 乐清市鸣川电器有限公司 | SG three-phase dry type transformer |
| CN106098316A (en) * | 2016-07-27 | 2016-11-09 | 中电电气(江苏)股份有限公司 | A kind of transformator air channel structure |
| CN206148246U (en) * | 2016-09-21 | 2017-05-03 | 东莞市宝诚电源科技有限公司 | Three -phase transformer for photovoltaic |
Non-Patent Citations (2)
| Title |
|---|
| 唐仲明: "《电工》", 31 January 2015, 山东科学技术出版社 * |
| 国家能源电力业务资质管理中心: "《电工进网作业许可考试参考大纲 高压类理论部分》", 30 June 2016, 浙江人民出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207489639U (en) | A kind of low-loss power transformer | |
| CN106959406A (en) | For carrying out the magnetized experimental rig of generator core and its method at lower voltages | |
| CN108538543A (en) | dry-type power transformer | |
| CN109524196A (en) | A kind of power transformer | |
| CN207503797U (en) | Two-tap intermediate frequency exciting test transformer | |
| Werle et al. | Transformers | |
| CN204145128U (en) | Single, three-phase brushless generator group | |
| CN201828641U (en) | Portable and integral alternating-current/direct-current tester for high-voltage motor | |
| CN207367754U (en) | A tractor serves several purposes dry-type transformer | |
| CN202153469U (en) | A novel amorphous alloy iron core transformer | |
| CN201918253U (en) | Electric current mutual inductor | |
| CN214428471U (en) | Portable small-size transformer | |
| CN206558336U (en) | A kind of Multifunctional AC ground power transformer | |
| CN205582702U (en) | Take transformer of autoalarm theftproof | |
| CN201298444Y (en) | Polycrystalline variable-current transformer | |
| CN104977489A (en) | Detection and maintenance method for windings of transformer | |
| CN210805442U (en) | Fireproof and explosion-proof dry-type transformer structure | |
| Sen | Application guidelines for dry-type distribution power transformers | |
| CN207338085U (en) | Power transformer | |
| CN211319918U (en) | Digital display type single-phase adjustable current transformer | |
| CN110619991A (en) | Test transformer suitable for multifrequency | |
| WO2024082371A1 (en) | Three-phase high-voltage shunt reactor capable of being used for cable withstand voltage test, and design method | |
| CN210091873U (en) | High-voltage oil-immersed voltage transformer | |
| CN214624721U (en) | Control system for grading voltage regulation test transformer | |
| Ion et al. | Manufacturing of IE4 induction motors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190326 |
|
| WW01 | Invention patent application withdrawn after publication |