CN202210461U - Epoxy resin cast type light high-voltage test transformer - Google Patents
Epoxy resin cast type light high-voltage test transformer Download PDFInfo
- Publication number
- CN202210461U CN202210461U CN 201120289217 CN201120289217U CN202210461U CN 202210461 U CN202210461 U CN 202210461U CN 201120289217 CN201120289217 CN 201120289217 CN 201120289217 U CN201120289217 U CN 201120289217U CN 202210461 U CN202210461 U CN 202210461U
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- China
- Prior art keywords
- epoxy resin
- high pressure
- poured
- light high
- iron core
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- Expired - Fee Related
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- 239000003822 epoxy resin Substances 0.000 title claims abstract description 21
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 title claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 13
- 235000012489 doughnuts Nutrition 0.000 claims description 14
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 230000005684 electric field Effects 0.000 description 7
- 239000011162 core material Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
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Abstract
The utility model relates to an epoxy resin cast type light high-voltage test transformer, comprising a base, an iron core and a coil, wherein the iron core is laterally arranged on the base; the coil is sleeved at the outer side of an upper iron core pillar; and a low-voltage winding and a high-voltage winding of the coil are wound on an insulating cylinder in sequence; the epoxy resin cast type light high-voltage test transformer is characterized in that: a cast body formed by casting in a mould together with a high-voltage shield layer is further arranged at the outer side of the high-voltage winding; the high-voltage shield layer in the cast body is mounted at the side close to the outer iron core of the cast body. The epoxy resin cast type light high-voltage test voltage is simple in structure, reliable in property and easy for fabrication, and is capable of greatly reducing main insulation electrical space and creepage distance, therefore, the epoxy resin cast type light high-voltage test transformer has the characteristics of smaller volume, lighter weight and higher cost performance.
Description
Technical field
The utility model relates to high voltage or high potential transformer, particularly relates to a kind of light-duty poured with epoxy resin formula HT testing transformer.
Background technology
At existing high-voltage test transformer; Especially poured with epoxy resin formula HT testing transformer; In order to satisfy the requirement of electric insulation; High-tension coil or high potential output stage must have enough electrical separations and creepage distance for the conductor and the electrode of low (or ground) current potential, and above-mentioned transformer makes its volume, weight bigger according to traditional profile and construction design method, and cost is also higher.
Summary of the invention
For solving above-mentioned technical problem, it is a kind of simple in structure that the utility model provides, dependable performance; Simple for production, reduce main insulation electrical separation and creepage distance, thereby had smaller size smaller; Than light weight, than the poured with epoxy resin formula light high pressure testing transformer of high performance-price ratio.
The utility model provides a kind of poured with epoxy resin formula light high pressure testing transformer; Comprise base, iron core and coil; Iron core is lain on one's side and is installed on the base; The outside suit coil of upper core post; The low pressure winding and the high pressure winding of said coil are wound on the insulating cylinder successively, it is characterized in that: also be provided with on the said high pressure winding outer circumference and high-tension shielding layer one pour mass that cast forms in the mould that coexists, the said high-tension shielding in the said pour mass is placed on a side of contiguous said pour mass outer iron core.
In technique scheme, it is donut or the concentric grooves of some depressions of some convexities at center that the pour mass surface around the high-field electrode is provided with said high-field electrode.
In technique scheme, the width of said donut, highly be respectively 3mm-10mm, the interval between the adjacent annulus equals the width or the height of annulus; Perhaps, width, the degree of depth of said concentric grooves are respectively 3mm-10mm, and the interval between the adjacent grooves equals the width or the degree of depth of groove; Preferably, the width of said donut with highly be 4mm-5mm; Perhaps, the width of said concentric grooves and the degree of depth are 4mm-5mm.
In technique scheme, the outline in the radial cross section of said pour mass is a round rectangle, and the corresponding radius of curvature of the radius of curvature of said fillet and high-tension coil surface is suitable.
In technique scheme, said high-tension shielding layer is sheet metal or the wire netting of edge through the plate shaped or flute profile of rounding processing.
In technique scheme, said high-tension shielding layer is the filtter gold of edge through the plate shaped or flute profile of rounding processing.
This poured with epoxy resin formula light high pressure testing transformer, owing to adopted the brand-new technology scheme, with traditional compared with techniques, it has following characteristics:
(1) donut around the high-field electrode makes high-field electrode by relying on traditional band shirt rim cylindrical surface to draw back the surperficial creepage distance that forms of undulation that is formed by some donuts on the plane, creepage distance change becoming electrode place; In addition owing to press close to peripheral being improved of high-tension coil surface electrode along face electric field strength; Reduce creepage distance, greatly reduced height dimension and insulating material consumption.
(2) setting of high-tension shielding layer; Make core window reduce greatly at interval; Electric field strength between pour mass surface and the contiguous iron core eases down to zero; Avoided the partial discharge between this place and iron core fully, the useful life and the fail safe that have effectively improved transformer when reducing core material consumption and volume of transformer, weight.
(3) the corresponding radius of curvature of the radius of curvature of pour mass surface fillet and high-tension coil surface is suitable, makes that the Electric Field Distribution of radiused surface is more even, can improve the corona voltage at this position.
Description of drawings
Fig. 1 is the cross-sectional view of the utility model.
Mark among the figure: 1-high-field electrode, 2-concentric circles, 3-pour mass, 4, high-tension coil, 5-high-tension shielding layer, 6-base, 7-iron core.
Embodiment
Understand and enforcement the utility model for the ease of those of ordinary skills, the utility model is done further to describe in detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, poured with epoxy resin formula light high pressure testing transformer comprises base 6, iron core 7 and coil, and iron core 7 is lain on one's side and is installed on the base 6, the outside suit coil of upper core post.The low pressure winding of this coil and high pressure winding be coiling successively from the inside to the outside on an insulating cylinder, and high-tension shielding layer 5 adopts thin plate or net metal material, processes the plate shaped or flute profile of edge through the rounding processing, preferably adopts the filtter gold material.The high-tension shielding layer 5 that filtter gold is processed is positioned over contiguous iron core one side of high-tension coil 4 high pressure windings outward; After the edge process rounding processing of filtter gold; Together cast is packaged in the epoxy resin; Through the potting compound one-time cast-forming, wherein screen 5 earthing potentials effectively shield the iron core outside the high pressure winding.The setting of high-tension shielding layer; Make core window reduce greatly at interval; Electric field strength between pour mass surface and the contiguous iron core eases down to zero; Avoided the partial discharge between this place and iron core fully, the useful life and the fail safe that have effectively improved transformer when reducing core material consumption and volume of transformer, weight.
High-field electrode 1; It is high potential; Pour mass surface on every side is the donut connected in star that there are several protruding donuts 2 or several depressions in the center with the electrode, and these donuts or groove can pass through the die casting moulding, perhaps also can after the pour mass demoulding, process or assemble moulding.The longitudinal size of these donuts or groove, lateral dimension and span at interval are 3mm-10mm.Preferably, the width of annulus or groove is that 4-5mm, height or the degree of depth also are 4-5mm, and the spacing distance between adjacent annulus or the groove is substantially the same with its width or the degree of depth, has so both reduced the height of transformer, has also guaranteed enough creepage distances.The high-field electrode that is arranged so that of these donuts or groove belongs to the surperficial creepage distance that forms of the undulation that is formed by some donuts on the plane by relying on traditional band shirt rim cylindrical surface to draw back creepage distance change becoming electrode; In addition owing to press close to peripheral being improved of high-tension coil surface electrode along face electric field strength; Reduce creepage distance, greatly reduced height dimension and insulating material consumption.
Preferably; The outline in above-mentioned pour mass 3 radial cross sections is a round rectangle; The corresponding radius of curvature of the radius of curvature of this fillet and high-tension coil surface is suitable, not only can improve the Electric Field Distribution on dielectric surface, makes that the Electric Field Distribution of radiused surface is more even; To improve the corona voltage at this position, the outward appearance that can also beautify product.
Above embodiment is merely a kind of execution mode of the utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Its concrete structure and size can be adjusted according to actual needs accordingly.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection range of the utility model.
Claims (8)
1. poured with epoxy resin formula light high pressure testing transformer; Comprise base, iron core and coil; Iron core is lain on one's side and is installed on the base, the outside suit coil of upper core post, and the low pressure winding and the high pressure winding of said coil are wound on the insulating cylinder successively; It is characterized in that: the said high pressure winding outside also is provided with and high-tension shielding layer one pour mass that cast forms in the mould that coexists, and the said high-tension shielding in the said pour mass is placed on the side near said pour mass outer iron core.
2. poured with epoxy resin formula light high pressure testing transformer according to claim 1 is characterized in that: it is several the protruding donuts at center or the concentric grooves of several depressions that the pour mass surface around the high-field electrode is provided with said high-field electrode.
3. poured with epoxy resin formula light high pressure testing transformer according to claim 2 is characterized in that: the width of said donut, highly be respectively 3mm-10mm, the interval between the adjacent annulus equals the width or the height of annulus; Perhaps, width, the degree of depth of said concentric grooves are respectively 3mm-10mm, and the interval between the adjacent grooves equals the width or the degree of depth of groove.
4. poured with epoxy resin formula light high pressure testing transformer according to claim 3 is characterized in that: the width of said donut with highly be 4mm-5mm; Perhaps, the width of said concentric grooves and the degree of depth are 4mm-5mm.
5. poured with epoxy resin formula light high pressure testing transformer according to claim 1, it is characterized in that: the outline in the radial cross section of said pour mass is a round rectangle.
6. poured with epoxy resin formula light high pressure testing transformer according to claim 5 is characterized in that: the corresponding radius of curvature of the radius of curvature of said fillet and high-tension coil surface is suitable.
7. poured with epoxy resin formula light high pressure testing transformer according to claim 1 is characterized in that: said high-tension shielding layer is sheet metal or the wire netting of edge through the plate shaped or flute profile of rounding processing.
8. poured with epoxy resin formula light high pressure testing transformer according to claim 7 is characterized in that: said high-tension shielding layer is the filtter gold of edge through the plate shaped or flute profile of rounding processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120289217 CN202210461U (en) | 2011-08-10 | 2011-08-10 | Epoxy resin cast type light high-voltage test transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120289217 CN202210461U (en) | 2011-08-10 | 2011-08-10 | Epoxy resin cast type light high-voltage test transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202210461U true CN202210461U (en) | 2012-05-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120289217 Expired - Fee Related CN202210461U (en) | 2011-08-10 | 2011-08-10 | Epoxy resin cast type light high-voltage test transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202210461U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867638A (en) * | 2012-08-03 | 2013-01-09 | 武汉市华兴特种变压器制造有限公司 | Armored shielding type high-voltage test transformer |
| CN104037172A (en) * | 2013-03-07 | 2014-09-10 | 亚德诺半导体技术公司 | Insulating Structure, Method Of Forming The Insulating Structure, And Chip Scale Isolator Including The Insulating Structure |
| CN104950232A (en) * | 2015-06-17 | 2015-09-30 | 武汉市华兴特种变压器制造有限公司 | Integrated high-voltage testing transformer for insulating oil withstand voltage tester |
-
2011
- 2011-08-10 CN CN 201120289217 patent/CN202210461U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867638A (en) * | 2012-08-03 | 2013-01-09 | 武汉市华兴特种变压器制造有限公司 | Armored shielding type high-voltage test transformer |
| CN104037172A (en) * | 2013-03-07 | 2014-09-10 | 亚德诺半导体技术公司 | Insulating Structure, Method Of Forming The Insulating Structure, And Chip Scale Isolator Including The Insulating Structure |
| CN104037172B (en) * | 2013-03-07 | 2018-07-10 | 亚德诺半导体集团 | Insulation system, the method for forming insulation system and the chip-scale isolator including this insulation system |
| CN104950232A (en) * | 2015-06-17 | 2015-09-30 | 武汉市华兴特种变压器制造有限公司 | Integrated high-voltage testing transformer for insulating oil withstand voltage tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120502 Termination date: 20130810 |