CN104950232A - Integrated high-voltage testing transformer for insulating oil withstand voltage tester - Google Patents
Integrated high-voltage testing transformer for insulating oil withstand voltage tester Download PDFInfo
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- CN104950232A CN104950232A CN201510338811.7A CN201510338811A CN104950232A CN 104950232 A CN104950232 A CN 104950232A CN 201510338811 A CN201510338811 A CN 201510338811A CN 104950232 A CN104950232 A CN 104950232A
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Abstract
The invention relates to an integrated high-voltage testing transformer for an insulating oil withstand voltage tester. The integrated high-voltage testing transformer comprises an iron core, a winding, a base and a winding device body, wherein the winding device body is formed by once casting of epoxy resin after being filled in a die together with the base and the winding; the iron core is horizontally arranged in the winding device body; a low-voltage coil and a high-voltage coil of the winding are distributed on two core columns of the iron core and are sequentially coiled on insulating cylinders outside the core columns; the winding device body is connected with a high-voltage terminal, a grounding terminal and two high-voltage terminals; various low-voltage terminals of the winding are connected to the corresponding low-voltage terminals and grounding terminal of the winding device body; two high-voltage terminals of the winding are connected to the corresponding high-voltage terminals of the winding device body. According to the integrated high-voltage testing transformer disclosed by the invention, 80kV voltage is output by means of two high-voltage (high-level) electrodes; the integrated high-voltage testing transformer is of an integrated structure, is free of complex and fussy external wiring, more convenient and simpler to mount and greatly decreased in size and weight.
Description
Technical field
The present invention relates to HT testing transformer, specifically a kind of integrated high pressure testing transformer for insulating oil withstand voltage tester.
Background technology
Often in current insulating oil withstand voltage tester two high pressure are adopted to be the testing transformer of 40kV meets 80kV trial voltage value by external cabling, the testing transformer external cabling of this unitized construction is loaded down with trivial details, and volume is large, Heavy Weight, electric adjustment and mechanical dimension's debug difficulties, the small portable of restriction instrument.
Summary of the invention
The object of the invention is overcome above-mentioned the deficiencies in the prior art and provide a kind of integrated high pressure testing transformer for insulating oil withstand voltage tester, this integrated high pressure testing transformer exports 80kV voltage by two high pressure (noble potential) electrode, the integral structure adopted is without the need to the loaded down with trivial details external cabling of complexity, simply easy for installation, and volume weight declines to a great extent.
The technical scheme realizing the object of the invention employing is a kind of integrated high pressure testing transformer for insulating oil withstand voltage tester, this integrated high pressure testing transformer comprises iron core, winding, base, and the winding device body of described base and winding together die-filling rear epoxy resin one-time cast-forming;
Flat the crouching of described iron core is arranged in winding device body, and the low-voltage coil winding of described winding and high-tension coil winding are distributed on two stem stems of iron core, are wound on the insulating cylinder outside described stem stem successively;
Described winding device body is connected with low pressure extraction electrode, ground wire and two high pressure extraction electrodes, each low voltage outlet terminals of described low-voltage coil winding is connected on the corresponding low pressure extraction electrode of winding device body and ground wire, and two HV Terminal of high-tension coil winding are connected on the corresponding high pressure extraction electrode of winding device body.
Further, above-mentioned integrated high pressure testing transformer also comprises two thin skirt minor diameter sleeve pipes, described two high ironed skirt minor diameter sleeve pipes and described base and winding moulding by casting, described two high pressure extraction electrodes drawn respectively by two high ironed skirt minor diameter sleeve pipes.
In technique scheme, the installation inserts that described base is U-shaped circular hole sheet metal and is welded on described U-shaped circular hole sheet metal, and described U-shaped circular hole sheet metal is connected on ground wire at winding device body inside lead-in wire when die-filling.
Compared with prior art, tool of the present invention has the following advantages:
(1) the present invention exports 80kV voltage by two high pressure (noble potential) extraction electrodes in winding device body, and integral structure, without the need to the external cabling that complexity is loaded down with trivial details, install more aobvious convenient and simple, volume weight declines to a great extent.
(2) high pressure (noble potential) extraction electrode adopts the one-time formed thin skirt minor diameter sleeve pipe of poured with epoxy resin to draw, add appearance creepage distance, under same linear distance, voltage can do more, volume can do less, accomplishes corona free sound simultaneously.
(3) shielding action of U-shaped circular hole sheet metal base, has blocked the radiation of high-voltage electric field, and U-shaped selecting of circular hole light sheet material alleviates overall weight.
Accompanying drawing explanation
Fig. 1 is appearance schematic diagram of the present invention.
Fig. 2 is winding device body insulation structure schematic diagram of the present invention.
Fig. 3 is base figure of the present invention.
In figure: 1-poured with epoxy resin material, 2-low pressure (electronegative potential) extraction electrode, 3-iron core, 4-low-voltage coil winding, 5-high-tension coil winding, 6-insulating cylinder, 7-base, 8-high pressure (noble potential) extraction electrode, the high ironed skirt minor diameter sleeve pipe of 9-, 10-ground wire, 11-installs inserts.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figures 1 to 3, the integrated high pressure testing transformer that the present invention is used for insulating oil withstand voltage tester comprises iron core 3 and winding device body, mutually insulated between the two, concrete structure is: winding device carries out winding (high-tension coil winding 5, low-voltage coil winding 4) and base 7 together die-filling rear epoxy resin 1 one-time cast-forming of line as inside.When die-filling, two high pressure (noble potential) extraction electrodes 8 are drawn on the top of mould, and low pressure (electronegative potential) extraction electrode 2 and ground wire 10 are drawn in bottom.In the present embodiment, two high pressure (noble potential) extraction electrodes 8 are drawn respectively by two high ironed skirt minor diameter sleeve pipes 9, and two high ironed skirt minor diameter sleeve pipes 9 and base 3 and winding moulding by casting.Each low-voltage terminal of low-voltage coil winding 4 is connected on the corresponding low-voltage terminal of winding device body and ground terminal, and two HV Terminal of high-tension coil winding 5 are connected on two high ironed skirt minor diameter sleeve pipes 9.
In the present embodiment, base 7 adopts U-shaped circular hole sheet metal welded and installed inserts 11 to make, and be connected with ground wire 10 in winding device body inside (before cast), become the external shielding layer of winding device body, its Outside Dimensions is not less than the periphery of its shielding object and outward extending size thereof, to ensure its shield effectiveness.Filling epoxy resin between this screen layer and high-tension coil winding 5, does not have clearance, completely avoid the atmospherical discharges of this place and other parts, improves serviceable life and the security of transformer.
Flat the crouching of iron core 3 is arranged in winding device body, and low-voltage coil winding 4 and high-tension coil winding 5 are distributed on two stem stems of iron core 3, are wound on successively on the insulating cylinder 6 outside 3 stem stems unshakable in one's determination.Iron core 3 is applied lead-in wire and is connected with device body insulating ground line 10 when general assembly (GA).
Claims (3)
1. for an integrated high pressure testing transformer for insulating oil withstand voltage tester, it is characterized in that: comprise iron core, winding, base, and the winding device body of described base and winding together die-filling rear epoxy resin one-time cast-forming;
Flat the crouching of described iron core is arranged in winding device body, and the low-voltage coil winding of described winding and high-tension coil winding are distributed on two stem stems of iron core, are wound on the insulating cylinder outside described stem stem successively;
Described winding device body is connected with low pressure extraction electrode, ground wire and two high pressure extraction electrodes, each low voltage outlet terminals of described low-voltage coil winding is connected on the corresponding low pressure extraction electrode of winding device body and ground wire, and two HV Terminal of high-tension coil winding are connected on the corresponding high pressure extraction electrode of winding device body.
2. according to claim 1 for the integrated high pressure testing transformer of insulating oil withstand voltage tester, it is characterized in that: also comprise two thin skirt minor diameter sleeve pipes, described two high ironed skirt minor diameter sleeve pipes and described base and winding moulding by casting, described two high pressure extraction electrodes drawn respectively by two high ironed skirt minor diameter sleeve pipes.
3. according to claim 1 for the integrated high pressure testing transformer of insulating oil withstand voltage tester, it is characterized in that: the installation inserts that described base is U-shaped circular hole sheet metal and is welded on described U-shaped circular hole sheet metal; And described U-shaped circular hole sheet metal is connected on ground wire at winding device body inside lead-in wire when die-filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338811.7A CN104950232A (en) | 2015-06-17 | 2015-06-17 | Integrated high-voltage testing transformer for insulating oil withstand voltage tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338811.7A CN104950232A (en) | 2015-06-17 | 2015-06-17 | Integrated high-voltage testing transformer for insulating oil withstand voltage tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104950232A true CN104950232A (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510338811.7A Pending CN104950232A (en) | 2015-06-17 | 2015-06-17 | Integrated high-voltage testing transformer for insulating oil withstand voltage tester |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2200861Y (en) * | 1994-07-16 | 1995-06-14 | 刘洪珊 | 60-100 thousand voltage high-tension oil transformer |
| KR20100110552A (en) * | 2009-04-03 | 2010-10-13 | (주)테크윈시스템 | Electric transformer for high tension generation |
| CN202210461U (en) * | 2011-08-10 | 2012-05-02 | 武汉市华兴特种变压器制造有限公司 | Epoxy resin cast type light high-voltage test transformer |
| 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 |
| CN204989400U (en) * | 2015-06-17 | 2016-01-20 | 武汉市华兴特种变压器制造有限公司 | A integral type high -voltage testing transformer for insulating oily withstanding voltage tester |
-
2015
- 2015-06-17 CN CN201510338811.7A patent/CN104950232A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2200861Y (en) * | 1994-07-16 | 1995-06-14 | 刘洪珊 | 60-100 thousand voltage high-tension oil transformer |
| KR20100110552A (en) * | 2009-04-03 | 2010-10-13 | (주)테크윈시스템 | Electric transformer for high tension generation |
| CN202210461U (en) * | 2011-08-10 | 2012-05-02 | 武汉市华兴特种变压器制造有限公司 | Epoxy resin cast type light high-voltage test transformer |
| 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 |
| CN204989400U (en) * | 2015-06-17 | 2016-01-20 | 武汉市华兴特种变压器制造有限公司 | A integral type high -voltage testing transformer for insulating oily withstanding voltage tester |
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Application publication date: 20150930 |