CN103714964A - Dry-type transformer end pouring method - Google Patents
Dry-type transformer end pouring method Download PDFInfo
- Publication number
- CN103714964A CN103714964A CN201310739539.4A CN201310739539A CN103714964A CN 103714964 A CN103714964 A CN 103714964A CN 201310739539 A CN201310739539 A CN 201310739539A CN 103714964 A CN103714964 A CN 103714964A
- Authority
- CN
- China
- Prior art keywords
- feed supplement
- epoxy resin
- material supplement
- dry
- type transformer
- 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.)
- Pending
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Abstract
The invention discloses a dry-type transformer end pouring method. Material supplement is carried out after epoxy resin vacuum pouring is finished and before solidification. The time of material supplement is when epoxy resin becomes thick but does not solidify. At the moment, flowability of the resin becomes poor, internal seepage is basically finished, the end changes slightly, even if slight collapse exists, a pit can be filled with supplemented materials which are well fused with original pouring materials, the resin solidifies in a short time after material supplement, and collapse is not caused again. The material supplement place is four points in the circumferential direction, the epoxy resin has already been thick when material supplement is carried out and is poor in flowability, so that the situation that a part of the epoxy resin solidifies in the flowing process is prevented.
Description
Technical field
The present invention relates to field transformer, particularly a kind of end pouring procedure of dry-type transformer.
Background technology
Dry-type transformer is in epoxide resin vacuum casting process, owing to being vacuum environment, epoxy resin penetrating power is extremely strong, in solidification process, epoxy resin can infiltrate the end of whole coil interlayer, so just cause the moment at resin solidification, subsiding may appear in pour mass end, thereby affects product electric property and attractive in appearance.
In order to address the above problem, at present domesticly generally adopt following two kinds of methods: one, after casting complete, by machining end face equating; This method can cause end face to have processing lines, affects attractive in appearancely, and waste material has increased again labor hour simultaneously.Two, by the way of repairing, there being the place epoxy fill of depression, after oven dry, polish; This method can cause resin material and the former curing resin material filled up to have obvious seam, affects attractive in appearancely, the most important thing is that seam crossing easily forms creepage passage, causes major hidden danger to the safe operation of product.
Summary of the invention
For above-mentioned situation, applicant is through Improvement, using solve pour mass end the problem of subsiding as at all, a kind of effective dry-type transformer end pouring procedure is provided.
Technical scheme of the present invention is as follows:
A dry-type transformer end pouring procedure, carries out feed supplement before solidifying after epoxide resin vacuum casting complete, comprises the selection of feed supplement time and the selection at feed supplement position; The described feed supplement time is: at epoxy resin material, become sticky thick, but carry out feed supplement before also not solidifying; Described feed supplement position is: on a circumferencial direction, be divided into four points and carry out feed supplement.
Useful technique effect of the present invention is:
Through test of many times, prove that the product surface that adopts the present invention to improve technique has clear improvement, and there will not be and subsides, processes lines or creepage passage.
Advantage of the present invention will provide in embodiment description partly below, and part will become obviously from the following description, or recognize by practice of the present invention.
Embodiment
Below the specific embodiment of the present invention is described further.
1, the feed supplement time: the feed supplement time is a very crucial step, should become sticky at epoxy resin material thick, but carry out feed supplement before also not solidifying, because resin material mobility at this moment has become very poor, inner infiltration completes substantially, the variation of end is very faint, even if there be slight subsiding, also can fill and lead up by the material of mending, and and the fusion of former castable is fine, mended after material, in the short time, resin just solidifies, and can not cause and subside again.
2, feed supplement position: be divided into four points and carry out feed supplement on a circumferencial direction, because epoxy resin material has become during feed supplement compared with thickness, mobility is bad, can prevent and locally in flow process, solidify.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive or associate without departing from the basic idea of the present invention, within all should thinking and being included in protection scope of the present invention.
Claims (1)
1. a dry-type transformer end pouring procedure, is characterized in that, before solidifying, carries out feed supplement after epoxide resin vacuum casting complete, comprises the selection of feed supplement time and the selection at feed supplement position; The described feed supplement time is: at epoxy resin material, become sticky thick, but carry out feed supplement before also not solidifying; Described feed supplement position is: on a circumferencial direction, be divided into four points and carry out feed supplement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739539.4A CN103714964A (en) | 2013-12-30 | 2013-12-30 | Dry-type transformer end pouring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739539.4A CN103714964A (en) | 2013-12-30 | 2013-12-30 | Dry-type transformer end pouring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103714964A true CN103714964A (en) | 2014-04-09 |
Family
ID=50407849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310739539.4A Pending CN103714964A (en) | 2013-12-30 | 2013-12-30 | Dry-type transformer end pouring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103714964A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105321705A (en) * | 2015-10-14 | 2016-02-10 | 国家电网公司 | Pouring technology for dry-type transformer coils |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5396210A (en) * | 1993-03-17 | 1995-03-07 | Square D Company | Dry-type transformer and method of manufacturing |
| CN102054578A (en) * | 2010-10-29 | 2011-05-11 | 东莞市华胜展鸿电子科技有限公司 | Method for casting full-resin transformer coil |
| CN201853564U (en) * | 2010-03-22 | 2011-06-01 | 河南天力电气设备有限公司 | Long and circular low-voltage coil of resin-cast dry type transformer |
| CN102592820A (en) * | 2012-03-28 | 2012-07-18 | 江苏中容科技有限公司 | One-step forming process of cast coil of dry type transformer |
-
2013
- 2013-12-30 CN CN201310739539.4A patent/CN103714964A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5396210A (en) * | 1993-03-17 | 1995-03-07 | Square D Company | Dry-type transformer and method of manufacturing |
| CN201853564U (en) * | 2010-03-22 | 2011-06-01 | 河南天力电气设备有限公司 | Long and circular low-voltage coil of resin-cast dry type transformer |
| CN102054578A (en) * | 2010-10-29 | 2011-05-11 | 东莞市华胜展鸿电子科技有限公司 | Method for casting full-resin transformer coil |
| CN102592820A (en) * | 2012-03-28 | 2012-07-18 | 江苏中容科技有限公司 | One-step forming process of cast coil of dry type transformer |
Non-Patent Citations (1)
| Title |
|---|
| 吴海军: "《环氧树脂真空浇注工艺过程及注意事项》", 《变压器》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105321705A (en) * | 2015-10-14 | 2016-02-10 | 国家电网公司 | Pouring technology for dry-type transformer coils |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140409 |