CN202695120U - Armored shielded high-voltage test transformer - Google Patents
Armored shielded high-voltage test transformer Download PDFInfo
- Publication number
- CN202695120U CN202695120U CN 201220382316 CN201220382316U CN202695120U CN 202695120 U CN202695120 U CN 202695120U CN 201220382316 CN201220382316 CN 201220382316 CN 201220382316 U CN201220382316 U CN 201220382316U CN 202695120 U CN202695120 U CN 202695120U
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- Prior art keywords
- voltage
- base
- iron core
- winding
- main body
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- Expired - Lifetime
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000004804 winding Methods 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 239000007769 metal material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 230000005684 electric field Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003570 air Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010125 resin casting Methods 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to an armored shielded high-voltage test transformer, comprising a base, an iron core and a winding. The armored shielded high-voltage test transformer is characterized by also comprising a pouring main body which is poured integrally with the base; the iron core is horizontally arranged on the base; the winding is sleeved at the center column of the iron core; a low-voltage coil and a high-voltage coil of the winding are sequentially wound on an insulating cylinder; a yoke of the iron core is encircled around the periphery of the high-voltage coil; the base is a groove metal base arranged below the winding; the upper edge of the base is connected with the yoke of the iron core; the yoke is connected with the metal base to form a shielding housing of a main body in the main body structure of the pouring main body; a high-voltage or high-potential electrode is led out above the pouring main body, and a low-voltage or low-potential electrode is led out below the pouring main body. According to the armored shielded high-voltage test transformer, the problem of puzzling surface discharge of a high-voltage dry-type test transformer is effectively solved, and a new solving scheme is proposed for solving insulating structures of a high-voltage epoxy pouring dry-type test transformer and a high-potential transformer. The armored shielded high-voltage test transformer is simple in structure, reliable in performance and simple and convenient to manufacture.
Description
Technical field
The utility model belongs to a kind of high voltage or high potential transformer, particularly a kind of armouring shielded high-voltage testing transformer
Background technology
At existing dry testing transformer, especially epoxy resin pouring testing transformer product, because the high-tension coil surface field intensity of this transformer is very high, although its outer envelope certain thickness epoxy resins insulation layer, but still be difficult to avoid its ambient air generation electric discharge phenomena, affect product useful life and Operation safety.The existence of this phenomenon has obviously restricted the lifting of above-mentioned power transformer product electric pressure, is unfavorable for epoxy resin pouring HT testing transformer product, and especially the voltage levels product applies.
Summary of the invention
The purpose of this utility model provides a kind of armouring shielded high-voltage testing transformer with novel device body insulation structure pattern, to solve the deficiencies in the prior art.
To achieve these goals, the technical scheme that adopts of the utility model is:
A kind of armouring shielded high-voltage testing transformer, comprise base, iron core and winding, described iron core is " E " shaped iron core or " ED " shaped iron core, be characterized in: also comprise: the cast main body that pours into an integrated entity with base, flat sleeping being installed on the base of described iron core, core center column sleeve dress winding, the low-voltage coil of described winding and high-tension coil are wound on the insulating cylinder successively, the iron yoke ring of described iron core is around the periphery of high-tension coil, described base is the groove type metab that is arranged on the below of described winding, the base upper edge links to each other with the iron yoke of described iron core, the iron yoke links to each other with metab in the machine body structure of cast main body becomes the screening can of device body, high pressure or high-potential electrode are drawn in described cast main body top, and low pressure or low-potential electrode are drawn in the below.
In technique scheme, in drawing the pour mass on edge on the position, iron yoke and low-field electrode be placed with and the equipotential stealth of iron yoke (or built-in) external shield ring, low-field electrode and iron yoke are carried out shielding, improve its peripheral Electric Field Distribution, prevent that it from electric discharge phenomena occuring.
In technique scheme, the periphery of described external shield ring is not less than the peripheral and outward extending size of its shielding object, to guarantee its shield effectiveness.
In technique scheme, described external shield ring can adopt tubular or round bar shape metal material to make.
In technique scheme, the outline of described external shield ring is circle or round rectangle.
In technique scheme, described high pressure winding outer surface holds one deck inner shield ring, described inner shield ring is the round rectangle sheet metal, its periphery encloses with round metal line or pipe fringing welding one, described inner shield ring two ends do not overlap, the about 10mm in interval connects into equipotential with wire and high-field electrode or high potential exit, to improve the Electric Field Distribution on high-tension coil surface.
In technique scheme, the cross section of described groove type base is polygon or circular arc.
The utility model is compared with traditional technology, and it has following features:
(1) around the high-tension coil (except high-field electrode draw top) and earth potential conductor (iron core and base) between do not have the air gap owing to being full of epoxide resin encapsulation material, do not have the discharge of gas ionization flashing.
(2) shielding action of iron yoke and metab, blocked high voltage electric field to around and the radiation of below.
(3) sheathed structure that forms of iron yoke and base, also also mould of shell has been simplified the encapsulating die structure greatly.
(4) iron core horizontal positioned can only change iron core thickness and can adapt to capacity in the certain limit and change the long-pending requirement of corresponding core section in certain scope, such one pair of mould can be suitable for the capacity requirement of many grades of products.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the utility model inner shield structure of rings schematic diagram.
Fig. 3 is the expanded view of Fig. 2.
Fig. 4 is the utility model external shield structure of rings schematic diagram
Among the figure: 1-pour mass, 2-low pressure (electronegative potential) extraction electrode, 3-iron core column, 4-low-voltage coil winding, 5-high-tension coil winding, 6-insulating cylinder, 7-base, 8-iron yoke, 9-external shield ring, 10-inner shield ring, the 101-sheet metal, the 102-fringing, 11-high-voltage leading-out wire, 12-high-field electrode, 13-connecting line (high potential), the 14-earth connection.
Embodiment
Below in conjunction with accompanying drawing the utility model content is described in further detail.
As shown in Figure 1, the device body insulation structure of the utility model armouring shielded high-voltage testing transformer comprises base, iron core, winding, inner shield ring and stealthy external shield ring.Flat sleeping being installed on the base of iron core, the newel suit winding of iron core.High-tension coil is in the outside of winding, and the outer inner shield ring that is connected with high-voltage leading-out wire of high-tension coil holds.Be solidified into integral body after iron core column, base, winding and the shading ring cast.Wherein iron core and base earthing potential become outer shielding layer.The filling epoxy resin casting glue does not have the air gap between this screen and high-tension coil, has avoided the atmospherical discharges between this place and iron core fully, has improved useful life and the fail safe of transformer.
As shown in Figure 2, the inner shield ring is by round rectangle sheet metal and round metal line or pipe making, and the metallic plate periphery encloses with round metal line or pipe fringing welding one.The ring two ends of inner shield do not overlap, the about 10mm in interval, and an end connects into equipotential with wire and high-field electrode or high potential exit, and the diameter of fringing circle line or pipe can be different with the difference of electric pressure.The expanded view of inner shield ring as shown in Figure 3.
As shown in Figure 4, the external shield ring can adopt tubular or round bar shape metal material to make (also can to adopt nonmetal or pole or tube of material are made into ring-type, then form uniform metal cladding on the surface of ring), the material diameter of making this shading ring can be different with the difference of electric pressure.
The metal shell of above-mentioned armouring shielding construction also becomes the part of casting mold simultaneously, thereby the moulding of pour mass only need to draw from the top mould of high-field electrode, has greatly simplified the integrated poured mould structure of device body.
Because the different capabilities of transformer requires different iron core column sectional areas, for the overall dimension that requires iron core that satisfies capacity just has corresponding change.In the core dimensions of the utility model transformer, only need change the within the specific limits requirement of adaptation capacity change of thickness of iron core, and can not cause the size of upper die to change, the product seriation that is conducive to realize and reduction cost of goods manufactured.
Above embodiment only is a kind of execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Its specific structural details can be adjusted according to actual needs accordingly.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion, improvement and increase the auxiliary process measure, these all belong to protection range of the present utility model.
Claims (10)
1. armouring shielded high-voltage testing transformer, comprise base, iron core and winding, it is characterized in that: also comprise: the cast main body that pours into an integrated entity with base, flat sleeping being installed on the base of described iron core, core center column sleeve dress winding, the low-voltage coil of described winding and high-tension coil are wound on the insulating cylinder successively, the iron yoke ring of described iron core is around the periphery of high-tension coil, described base is the groove type metab that is arranged on the below of described winding, the base upper edge links to each other with the iron yoke of described iron core, the iron yoke links to each other with metab in the machine body structure of cast main body becomes the screening can of device body, high pressure or high-potential electrode are drawn in described cast main body top, and low pressure or low-potential electrode are drawn in the below.
2. armouring shielded high-voltage testing transformer as claimed in claim 1 is characterized in that: be placed with and the equipotential stealth of iron yoke or built-in external shield ring in the pour mass that iron yoke and the low-field electrode of described iron core are drawn edge on the position.
3. armouring shielded high-voltage testing transformer as claimed in claim 1, it is characterized in that: described high pressure winding outer surface holds one deck inner shield ring.
4. armouring shielded high-voltage testing transformer as claimed in claim 2 is characterized in that: the periphery of described external shield ring is not less than the peripheral and outward extending size of its shielding object.
5. armouring shielded high-voltage testing transformer as claimed in claim 2 is characterized in that: described external shield ring adopts tubular or round bar shape metal material to make.
6. armouring shielded high-voltage testing transformer as claimed in claim 2, it is characterized in that: the outline of described external shield ring is circle or round rectangle.
7. armouring shielded high-voltage testing transformer as claimed in claim 3, it is characterized in that: described inner shield ring is the round rectangle sheet metal, its periphery is with round metal line or pipe fringing welding one circle, connects into equipotential with wire and high-field electrode or high potential exit.
8. such as claim 3 or 7 described armouring shielded high-voltage testing transformers, it is characterized in that: described inner shield ring two ends do not overlap.
9. armouring shielded high-voltage testing transformer as claimed in claim 8 is characterized in that: described inner shield ring two ends do not overlap is spaced apart 10mm.
10. armouring shielded high-voltage testing transformer as claimed in claim 1, it is characterized in that: the cross section of described groove type base is polygon or circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382316 CN202695120U (en) | 2012-08-03 | 2012-08-03 | Armored shielded high-voltage test transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382316 CN202695120U (en) | 2012-08-03 | 2012-08-03 | Armored shielded high-voltage test transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202695120U true CN202695120U (en) | 2013-01-23 |
Family
ID=47550702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220382316 Expired - Lifetime CN202695120U (en) | 2012-08-03 | 2012-08-03 | Armored shielded high-voltage test transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202695120U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118420A (en) * | 2021-06-18 | 2021-07-16 | 北京煜鼎增材制造研究院有限公司 | Superfine columnar crystal high-temperature alloy blade and laser directional solidification preparation method thereof |
| CN113574399A (en) * | 2019-03-26 | 2021-10-29 | Ls电气株式会社 | Transformer insulation characteristic testing device |
-
2012
- 2012-08-03 CN CN 201220382316 patent/CN202695120U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113574399A (en) * | 2019-03-26 | 2021-10-29 | Ls电气株式会社 | Transformer insulation characteristic testing device |
| CN113118420A (en) * | 2021-06-18 | 2021-07-16 | 北京煜鼎增材制造研究院有限公司 | Superfine columnar crystal high-temperature alloy blade and laser directional solidification preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |
|
| CX01 | Expiry of patent term |