CN102360894B - Shielding device for contact box type current transformer - Google Patents
Shielding device for contact box type current transformer Download PDFInfo
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- CN102360894B CN102360894B CN 201110227115 CN201110227115A CN102360894B CN 102360894 B CN102360894 B CN 102360894B CN 201110227115 CN201110227115 CN 201110227115 CN 201110227115 A CN201110227115 A CN 201110227115A CN 102360894 B CN102360894 B CN 102360894B
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- ring
- current transformer
- contact box
- fixed
- shielding structure
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 37
- 229910052802 copper Inorganic materials 0.000 claims description 22
- 239000010949 copper Substances 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract 2
- 238000012216 screening Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin 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
- 239000000203 mixture Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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- Regulation Of General Use Transformers (AREA)
Abstract
The technical scheme of the invention is to provide a shielding device for a contact box type current transformer. The shielding device for contact box type current transformer comprises a high-voltage shielding structure and a low-voltage shielding structure, wherein the high-voltage shielding structure is fixed on a static contact of the contact box type current transformer; the low-voltage shielding structure is fixed on a secondary coil bracket of the contact box type current transformer; and the low-voltage shielding structure is grounded. The shielding device for contact box type current transformer is characterized in that: the altitude difference delta H between the high-voltage shielding structure and the low-voltage shielding structure is equal to 35 to 45 mm; the height H1 of the high-voltage shielding structure is equal to 90 to 100 mm; and the height H2 of the low-voltage shielding structure is equal to 35 to 45 mm. The shielding device provided by the invention solves the problem about discharging around a static tap of the contact box type current transformer, improves performance of the current transformer and reduces partial discharge.
Description
Technical field
The present invention relates to a kind of screening arrangement for contact box current transformer.
Background technology
High-tension switch cabinet is used for electric power system generating, transmission of electricity, distribution, electric energy conversion and consumes, and it plays the effects such as break-make, control or protection.Current transformer is electric elements commonly used in high-tension switch cabinet.And contact box current transformer refers to that an end of a high-pressure side is the contact box form.Can produce the discharge problem around the fixed contact of existing contact box current transformer, reduce the performance of current transformer, improve office and put.
Summary of the invention
The screening arrangement that the purpose of this invention is to provide the problem of discharging around a kind of fixed contact that solves contact box current transformer.
in order to achieve the above object, technical scheme of the present invention has been to provide a kind of shielding device for contact box type current transformer, comprise high-tension shielding structure and low voltage screen shield structure, the high-tension shielding structure is fixed on the fixed contact of contact box current transformer, the low voltage screen shield structure is fixed on the secondary coil support of contact box current transformer, the low voltage screen shield structure is connected to the ground, it is characterized in that: the difference in height △ H=35～45mm between high-tension shielding structure and low voltage screen shield structure, the height H 1=90 of high-tension shielding structure～100mm, the height H 2=35 of low voltage screen shield structure～45mm.
Preferably, described high-tension shielding structure comprises retainer ring and the circle copper ring that is positioned at top and below, be fixed with at least five the first vertical copper rods between retainer ring and circle copper ring, the two ends up and down of the first cylindric copper mesh are separately fixed on retainer ring and circle copper ring, be fixed with a circular spiral body on the circle copper ring, the distance between retainer ring and circle copper ring is the height H 1 of described high-tension shielding structure.
Preferably, described low voltage screen shield structure comprises ring, be provided with at least five the second vertical copper rods on ring, the second cylindric copper mesh covers the surface of ring and fixes with ring, be fixed with the epoxy fixed block on the second copper rod and the second cylindric copper mesh, fixedly an end and the ring of iron wire fix, and the other end is provided with nut, and the height of ring is the height H 2 of described low voltage screen shield structure.
A kind of screening arrangement provided by the invention has solved discharge problem around the fixed contact of contact box current transformer, has improved the performance of current transformer, has reduced office and has put.
Description of drawings
Fig. 1 is a kind of shielding device for contact box type current transformer general structure schematic diagram provided by the invention;
Fig. 2 A is the vertical view of high-tension shielding structure;
Fig. 2 B is the side sectional view of high-tension shielding structure;
Fig. 3 A is the vertical view of low voltage screen shield structure;
Fig. 3 B is the side sectional view of low voltage screen shield structure.
Embodiment
For the present invention is become apparent, hereby with a preferred embodiment, and coordinate accompanying drawing to be described in detail below.
As shown in Figure 1, a kind of shielding device for contact box type current transformer provided by the invention, comprise high-tension shielding structure 1 and low voltage screen shield structure 2, high-tension shielding structure 1 is fixed on the fixed contact of contact box current transformer, adjust distance, low voltage screen shield structure 2 is being fixed on the secondary coil support of contact box current transformer, low voltage screen shield structure 2 is connected to the ground, difference in height △ H=35～45mm between high-tension shielding structure 1 and low voltage screen shield structure 2, in the present embodiment, difference in height △ H is taken as 40mm
As shown in Fig. 2 A and Fig. 2 B, high-tension shielding structure 1 comprises retainer ring 1-4 and the circle copper ring 1-1 that is positioned at top and below, many first vertical copper rod 1-2 of welding between retainer ring 1-4 and circle copper ring 1-1.The copper mesh that to cut out again is rolled into the first cylindric copper mesh 1-3 on wooden roller, with the two ends up and down of the first cylindric copper mesh 1-3 respectively flanging be welded on retainer ring 1-4 and circle copper ring 1-1, welding one circular spiral body 1-5 on circle copper ring 1-1, distance between retainer ring 1-4 and circle copper ring 1-1 is height H 1=90～100mm of described high-tension shielding structure 1, in the present embodiment, height H 1 is taken as 95mm.
As shown in Fig. 3 A and Fig. 3 B, low voltage screen shield structure 2 comprises ring 2-3, many the second vertical copper rod 2-5 of welding on ring 2-3, the second cylindric copper mesh 2-4 covers the surface of ring 2-3 and is welded and fixed with ring 2-3, is fixed with epoxy fixed block 2-6 on the second copper rod 2-5 and the second cylindric copper mesh 2-4.Fixedly during epoxy fixed block 2-6, first with mixture of epoxy resins, epoxy fixed block 2-6 is bonded on the second copper rod 2-5 and the second cylindric copper mesh 2-4, after air-heater blows two minutes initial solidifications again, be put into baking curing in about 10 hours in 120 ℃～130 ℃ baking ovens.Fixedly the end of iron wire 2-2 fixes with ring 2-3, and the other end is provided with nut 2-1, and the height of ring 2-3 is height H 2=35～45mm of low voltage screen shield structure 2, and in the present embodiment, height H 2 is taken as 40mm.
Claims (2)
1. shielding device for contact box type current transformer, comprise high-tension shielding structure (1) and low voltage screen shield structure (2), high-tension shielding structure (1) is fixed on the fixed contact of contact box current transformer, low voltage screen shield structure (2) is fixed on the secondary coil support of contact box current transformer, low voltage screen shield structure (2) is connected to the ground, it is characterized in that: the difference in height △ H=45～65mm between high-tension shielding structure (1) and low voltage screen shield structure (2), the height H 1=90 of high-tension shielding structure (1)～100mm, the height H 2=35 of low voltage screen shield structure (2)～45mm, described high-tension shielding structure (1) comprises the retainer ring (1-4) that is positioned at the top and is positioned at the round copper ring (1-1) of below, be fixed with at least five vertical the first copper rods (1-2) between retainer ring (1-4) and circle copper ring (1-1), the two ends up and down of the first cylindric copper mesh (1-3) are separately fixed on retainer ring (1-4) and circle copper ring (1-1), be fixed with a circular spiral body (1-5) on circle copper ring (1-1), distance between retainer ring (1-4) and circle copper ring (1-1) is the height H 1 of described high-tension shielding structure (1).
2. a kind of shielding device for contact box type current transformer as claimed in claim 1, it is characterized in that: described low voltage screen shield structure (2) comprises ring (2-3), be provided with at least five vertical the second copper rods (2-5) on ring (2-3), the second cylindric copper mesh (2-4) covers the surface of ring (2-3) and fixes with ring (2-3), be fixed with epoxy fixed block (2-6) on the second copper rod (2-5) and the second cylindric copper mesh (2-4), fixedly an end of iron wire (2-2) and ring (2-3) fix, the other end is provided with nut (2-1), the height of ring (2-3) is the height H 2 of described low voltage screen shield structure (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110227115 CN102360894B (en) | 2011-08-09 | 2011-08-09 | Shielding device for contact box type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110227115 CN102360894B (en) | 2011-08-09 | 2011-08-09 | Shielding device for contact box type current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102360894A CN102360894A (en) | 2012-02-22 |
| CN102360894B true CN102360894B (en) | 2013-06-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110227115 Active CN102360894B (en) | 2011-08-09 | 2011-08-09 | Shielding device for contact box type current transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102360894B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048298A (en) * | 2015-09-02 | 2015-11-11 | 南通东源协力电器有限公司 | Shielding body for 35kV contact box of switch cabinet |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201259830Y (en) * | 2008-04-07 | 2009-06-17 | 袁国星 | Electronic voltage mutual inductor |
| CN201556521U (en) * | 2009-01-14 | 2010-08-18 | 四川泰克电器有限公司 | Electronic type voltage transformer |
| CN201820625U (en) * | 2010-10-14 | 2011-05-04 | 珠海威瀚科技发展有限公司 | Electronic voltage transformer |
| CN202172009U (en) * | 2011-08-09 | 2012-03-21 | 正泰电气股份有限公司 | Shielding device for contact box type current transformer |
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2011
- 2011-08-09 CN CN 201110227115 patent/CN102360894B/en active Active
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| CN102360894A (en) | 2012-02-22 |
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Effective date of registration: 20180731 Address after: 712000 200, Wen Xing Road, Qin Du science and Technology Industrial Park, Qin Du District, Xianyang, Shaanxi Patentee after: SHAANXI ZHENGTAI INTELLIGENT ELECTRICAL CO.,LTD. Address before: 201614 1255 Wen he road, Songjiang District, Shanghai Patentee before: Chint Electric Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20231218 Address after: Building 3, No. 200 Wenxing Road, Qindu District, Xianyang City, Shaanxi Province, 712000 Patentee after: Shaanxi Zhengtai Transformer Technology Co.,Ltd. Address before: 712000 200, Wen Xing Road, Qin Du science and Technology Industrial Park, Qin Du District, Xianyang, Shaanxi Patentee before: SHAANXI ZHENGTAI INTELLIGENT ELECTRICAL CO.,LTD. |
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| TR01 | Transfer of patent right |