CN2775811Y - Dry type transformer - Google Patents
Dry type transformer Download PDFInfo
- Publication number
- CN2775811Y CN2775811Y CN 200520039717 CN200520039717U CN2775811Y CN 2775811 Y CN2775811 Y CN 2775811Y CN 200520039717 CN200520039717 CN 200520039717 CN 200520039717 U CN200520039717 U CN 200520039717U CN 2775811 Y CN2775811 Y CN 2775811Y
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- CN
- China
- Prior art keywords
- iron core
- low
- dry
- stem
- type transformer
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- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a dry transformer, which comprises an upper clamping piece, a, an iron core, a high-voltage wire package, a low-voltage wire package and a plurality of insulating spacers which are respectively distributed among the lower ends of the lower clamping piece, the high-voltage wire package and low-voltage wire package and among the upper ends of the upper clamping piece, the high-voltage wire package and low-voltage wire package. The utility model is characterized in that the iron core is an open type rolling iron core, namely is spliced by a plurality of rolling single frames which can be opened and closed on yoke parts. When the iron core single frames are opened on the yoke parts, the high-voltage wire package and the low-voltage wire package are disposed in columns and sheathed into each iron core column in a coaxial-layer mode; when the yoke parts of the iron core single frames are closed, a closing state of the entire iron core is formed. The utility model not only has the advantages of good performance, low noise, material saving and low cost, what is more important, coils of the oil immersed transformer can be independently wound because the iron core can be opened. Independent pouring is convenient for manufacturing, and has identical iron core capacity compared with the existing spliced large-scale dry transformer. The iron core can be opened. Once damaged, the coils of the dry transformer can be replaced in time.
Description
Technical field
The utility model relates to a kind of dry-type transformer.
Background technology
The technical performance of dry-type transformer is decided by the material and the structure thereof of its used iron core to a great extent.The iron core overwhelming majority that dry-type transformer is used adopts silicon steel sheet or steel band manufacturing to form, and manufacture method mainly is a lamination.
The iron core that present dry-type transformer is used is generally laminated core structure, it is built up by definite shape by silicon steel sheet, this iron core is owing to defective tightness between the silicon steel sheet sheet, exist air-gap in the magnetic circuit, and the high magnetic conduction direction and the magnetic circuit direction of local area material are inconsistent, make the poor-performing of iron core, the transformer noload losses of making is higher, noise is bigger.
In order to overcome the defective of above-mentioned laminated core structure, can adopt the takeup type iron core, the takeup type iron core is that the silicon steel strip continuous reeling by definite shape forms, the transformer performance of being made by this iron core is significantly improved, and is mainly reflected in that no-load loss is low, noise is little.But the framework of takeup type iron core is closed type, makes dry-type transformer with it and obviously has following shortcoming:
When 1) transformer coil winds the line, must be with this takeup type iron core to wind the line, promptly on iron core, operate the coil-winding operation, thereby brought very big difficulty, influence production efficiency to coiling, especially for large and medium-sized transformer, even can't the ribbon core coiling.
When 2) pouring into a mould for the high and low line ball bag of poured with epoxy resin formula dry-type transformer, must pour into a mould by ribbon core, complex process, difficulty are very big, especially for large and medium-sized transformer, even can't the ribbon core cast.
3) in the transformer use, damage, can't take off coil from iron core at all and change, cause whole transformer to scrap as coil takes place.
Because above-mentioned shortcoming, restricted closed type Wound core more widely-used on dry-type transformer.
For this reason, in the application for a patent for invention that the applicant once was 200410099148.1 at application number, the applying date is on December 28th, 2004 a kind of open type rolling iron core has been proposed, this iron core is to be put together by the identical or close single frame iron core of several shapes, each single frame is to be reeled by one or a few silicon steel strip to form, each the yoke portion of the single frame of remaining silent of winding shaping form the cutting seam that a short seam that is distributed by many mutual dislocation is formed through layering dislocation cutting, stitching successively to open when this cutting promptly becomes the U-shaped of opening framework; Behind the staggered overlap joint of the opening portion of this U-shaped framework, promptly become the iron core single frame of magnetic circuit closure.
How the open type rolling iron core of said structure is applied in the dry-type transformer, to have overcome the defective that can't use the takeup type iron core in large and medium-sized dry-type transformer, is one of the applicant's problem of endeavouring to study.
The utility model content
The purpose of this utility model is to provide a kind of dry-type transformer, make transformer more excellent performance, low cost of manufacture and be convenient to the maintenance.
A kind of dry-type transformer provided by the utility model, comprise, lower clamping piece, iron core, height by dry-type transformer requirement making, the low-voltage line bag, and several are distributed in described lower clamping piece with high, between the low-voltage line bag lower end and at described upper clamping piece and height, low-voltage line is wrapped the cross-over block between the end, high, low-voltage coil is by last, lower clamping piece, cross-over block compresses up and down, and fix with iron core, it is characterized in that, described iron core is an open type rolling iron core, promptly can open in its yoke portion respectively by several, the coiling single frame of remaining silent is put together, and described height when iron core single frame yoke portion opening, low line bag arranges that with coaxial laminar apportion is inserted in each iron core stem stem, then forms the state of remaining silent of whole iron core when single frame yoke portion remains silent.
In above-mentioned dry-type transformer, the stem stem quantity after several single frame amalgamations is at least 2, and is plane arrangement.
In above-mentioned dry-type transformer, the stem stem quantity after several single frame amalgamations is at least 3, and is the stereo structure arrangement.
In above-mentioned dry-type transformer, iron core stem stem shape of cross section is rounded.
In above-mentioned dry-type transformer, iron core stem stem shape of cross section is polygon.
In above-mentioned dry-type transformer, iron core stem stem shape of cross section is complex.
In above-mentioned dry-type transformer, iron core stem stem shape of cross section is stairstepping.
Adopted above-mentioned technical solution, the utility model, the firstth, the iron core opening, transformer coil is coiling and cast separately separately, just can make of existing spooling equipment and casting equipment, so this iron core is convenient to make and the present identical high-power transformer of laminated core structure capacity, performance but greatly improves than laminated transformer, particularly stem stem descends 50% approximately for three-dimensional volume iron core no-load loss of arranging, and it is about 70% that no-load current descends, and noise reduces more than 10 decibels, save silicon strip 20%, manufacturing cost descends more than 10%, and three-phase equilibrium, and third-harmonic component is little; The secondth, " opening " and " closure " of iron core opening portion can repeat according to actual needs, in case so coil damages in the transformer use, need repairing when changing, the iron core closing section can be reopened, more emat coil has been avoided scrapping of whole transformer; The 3rd is that cross section occupation efficiency (occupation efficiency when promptly not considering the lamination coefficient) can reach more than 0.98, the more approaching circle of the shape of core section, thus saved the coiling copper material.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation that iron core of the present utility model and high and low line ball package close;
Structural representation when Fig. 3 is the single frame opening of iron core of the present utility model.
Embodiment
The utility model is an example with the dry-type transformer of plane three-phase three-column opening takeup type iron core, specifies structure of the present utility model.
As shown in Figure 1, the dry-type transformer of plane three-phase three-column opening takeup type iron core, the high and low line ball bag 3,4 of comprise upper and lower folder 1,2, iron core 5, making by the dry-type transformer requirement and several are distributed between lower clamping piece 2 and high and low line ball bag 3,4 lower ends and the cross-over block 6 between upper clamping piece 1 and high and low line ball bag 3,4 upper ends.
As Fig. 2, shown in Figure 3, iron core 5 adopts open type rolling iron core, promptly but this iron core 5 is put together at the coiling single frame 51,51 ' of its yoke portion open and close mouth respectively by 3, and the stem stem cross section of iron core can be quasi-circular, accurate polygon, complex, also can be stairstepping.When the single frame 51 of iron core 5,51 ' yoke portion opening, high and low line bag 3,4 arranges that with coaxial laminar apportion is inserted in each iron core stem stem 52, then forms the state of remaining silent of whole iron core 5 when single frame yoke portion remains silent.
Referring to Fig. 1, the upper and lower folder 1,2 and the pull bar 7 on the folder that constitute by cross-over block 6, channel-section steel compress high and low line ball bag 3,4 up and down, and firmly fix with iron core, are installed on the bearing again, form dry-type transformer again.Also the air cooling equipment that is made of blower fan and air channel can be installed on the bearing.
The utility model will be coiling good and meet the requirements of three groups of high and low coil bags of dry-type transformer (also can by the line bag of other dry-type transformer requirement making) through poured with epoxy resin and be set with on three stem stems of open type plane three-phase three-column takeup type iron core, and with the silicon strip of each single frame opening portion from inside to outside layering piece together the butt joint shape, form staggered overlap joint between the different levels, up to outermost layer, make the iron core of remaining silent of whole iron core formation closed magnetic circuit, as shown in Figure 2.
Certainly with each single frame opening portion silicon strip from inside to outside layering piece together butt joint and also can settle an inner piece earlier before the shape, when making first silicon strip butt joint with inner piece as support.And then layering amalgamation, in each layer amalgamation process, also can in position increase additional bonding jumper, to increase amalgamation part bonding strength and the cross-sectional area that increases amalgamation conjugated part portion each other, improve transformer performance, after the whole amalgamations of opening portion silicon strip are intact, can add a band with the outer banding of single frame in outer most bits, also can be outermost outside with ways such as welding connection a slice outermost layer reinforced sheet in amalgamation.
In case of necessity, still can divide layer open with closed iron core ecto-entad again, again form open state, at this moment height line ball bag can take out from opening portion, change the ew line bag, after more finishing changing, the iron core layering closure from inside to outside of opening forms the iron core of remaining silent of closed magnetic circuit again up to whole closures." opening " and " closure " of this iron core opening portion can repeat according to actual needs, all overlap on each stem stem load onto high and low pressure line bag after, and, just formed plane triangle takeup type iron core with closed magnetic circuit with after the whole closures of the opening portion of iron core.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (7)
1. dry-type transformer, comprise, lower clamping piece, iron core, high, the low-voltage line bag, and several are distributed in described lower clamping piece with high, between the low-voltage line bag lower end and at described upper clamping piece and height, low-voltage line is wrapped the cross-over block between the end, high, low-voltage coil is by last, lower clamping piece, cross-over block compresses up and down, and fix with iron core, it is characterized in that, described iron core is an open type rolling iron core, promptly can open in its yoke portion respectively by several, the coiling single frame of remaining silent is put together, and described height when iron core single frame yoke portion opening, low line bag arranges that with coaxial laminar apportion is inserted in each iron core stem stem, then forms the state of remaining silent of whole iron core when single frame yoke portion remains silent.
2. dry-type transformer according to claim 1 is characterized in that: the stem stem quantity after described several single frame amalgamations is at least 2, and is plane arrangement.
3. dry-type transformer according to claim 1 is characterized in that: the stem stem quantity after described several single frame amalgamations is at least 3, and is the stereo structure arrangement.
4. dry-type transformer according to claim 1 is characterized in that, described iron core stem stem shape of cross section is rounded.
5. dry-type transformer according to claim 1 is characterized in that, described iron core stem stem shape of cross section is polygon.
6. dry-type transformer according to claim 1 is characterized in that, described iron core stem stem shape of cross section is complex.
7. dry-type transformer according to claim 1 is characterized in that, described iron core stem stem shape of cross section is stairstepping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520039717 CN2775811Y (en) | 2005-02-22 | 2005-02-22 | Dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520039717 CN2775811Y (en) | 2005-02-22 | 2005-02-22 | Dry type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2775811Y true CN2775811Y (en) | 2006-04-26 |
Family
ID=36750128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520039717 Expired - Lifetime CN2775811Y (en) | 2005-02-22 | 2005-02-22 | Dry type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2775811Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332387A (en) * | 2013-05-22 | 2013-10-02 | 中电电气(江苏)股份有限公司 | Improved clamp welding support plate structure of dry-type transformer |
-
2005
- 2005-02-22 CN CN 200520039717 patent/CN2775811Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332387A (en) * | 2013-05-22 | 2013-10-02 | 中电电气(江苏)股份有限公司 | Improved clamp welding support plate structure of dry-type transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO JIA YONG TRANSFORMER CO. Free format text: FORMER OWNER: ZHANG MINGDE Effective date: 20080822 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080822 Address after: No. 37, Changfeng Industrial Zone, Ningbo, Zhejiang Province, China: 315192 Patentee after: Ningbo Yourjai Transformer Co., Ltd. Address before: Shanghai City, Jiading District Nanxiang Town, No. 13 Lane 170 democratic Street Room 201, zip code: 201802 Patentee before: Zhang Mingde |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhang Mingde Assignor: Ningbo Yourjai Transformer Co., Ltd. Contract record no.: 2011310000249 Denomination of utility model: Interlock protection device and method for dry type transformer Granted publication date: 20060426 License type: Common License Record date: 20111216 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Xinte Electric Co.,Ltd. Assignor: Zhang Mingde Contract record no.: 2012990000072 Denomination of utility model: Interlock protection device and method for dry type transformer Granted publication date: 20060426 License type: Common License Record date: 20120228 Assignee: Newonder Special Electric Co., Ltd. Assignor: Zhang Mingde Contract record no.: 2012990000071 Denomination of utility model: Interlock protection device and method for dry type transformer Granted publication date: 20060426 License type: Common License Record date: 20120228 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150222 Granted publication date: 20060426 |