CN102938305B - Super extra-high-voltage alternating current transformer outgoing line device - Google Patents

Super extra-high-voltage alternating current transformer outgoing line device Download PDF

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Publication number
CN102938305B
CN102938305B CN201210495198.6A CN201210495198A CN102938305B CN 102938305 B CN102938305 B CN 102938305B CN 201210495198 A CN201210495198 A CN 201210495198A CN 102938305 B CN102938305 B CN 102938305B
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Prior art keywords
shielded
plate tube
clamp
shielding ball
shielding
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CN201210495198.6A
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CN102938305A (en
Inventor
俞英忠
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Changzhou Yingzhong Electrical Co., Ltd.
China Electric Power Research Institute Co Ltd
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CHANGZHOU YINGZHONG ELECTRICAL Co Ltd
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Abstract

The invention discloses a kind of super extra-high-voltage alternating current transformer outgoing line device, it comprises shielded-plate tube, shielding ball be close to respectively shielded-plate tube and shielding ball arrange inner insulating layer and layering be arranged at shielded-plate tube and shielding ectosphere multilayer external insulation layer, inner insulating layer the end of shielded-plate tube and shielding ball end face on all to carry out bound edge, shielding ball is connected to the end, one end of shielded-plate tube, multiple first clamp is arranged at intervals with between the outer adjacent insulating barrier of shielded-plate tube, first clamp is arranged along the direction perpendicular to shielded-plate tube axis, first clamp is provided with oil through, the second clamp is provided with between the insulating barrier that shielding ectosphere is adjacent, second clamp is arranged along the axis of shielding ball, the oil duct of logical oil is formed between second clamp, second clamp is provided with the through hole for logical oil, the outside of the external insulation layer of described shielding ball is also provided with ripple grid, the outside of the external insulation layer of shielded-plate tube end is also provided with ripple grid.Super extra-high-voltage alternating current transformer outgoing line device voltage endurance capability of the present invention is strong, can meet the voltage withstand class of 1000kV.

Description

Super extra-high-voltage alternating current transformer outgoing line device
Technical field
The present invention relates to electrical insulations field, particularly a kind of insulation outlet device for superhigh pressure or extra-high-voltage alternating current transformer.
Background technology
The rated voltage of common EHV transformer is all at 350KV to 500KV, and the rated voltage of extra-high voltage transformer is all at 750KV and more than 750KV.The high-voltage terminal device of alternation depressor is the high pressure winding high-pressure side lead-out wire of connection transformer and the insulating connecting component of supply line, therefore, must ensure that outgoing line device has good electrical insulation properties.The outgoing line device of existing EHV transformer normally comprises metallic shield pipe and metallic shield ball, and the two is fixedly connected with, arranged outside multilayer dielectric layer, and insulation property guaranteed by logical insulating oil between insulating barrier.Existing super extra-high-voltage alternating current transformer outgoing line device, the fagging that axially arranges is adopted by oil duct point in order to separate several parts between the insulating barrier of metallic shield pipe and metallic shield ball, be unfavorable for the circulation of insulating oil, affect its heat-conducting effect and insulation property.
Summary of the invention
The insulating oil circulation that the object of the invention is to exist for the existing super extra-high-voltage alternating current transformer outgoing line device described in background technology is not smooth, affect the problem of its heat-conducting effect and insulation property, a kind of super extra-high-voltage alternating current transformer outgoing line device that can solve foregoing problems is provided.
The technical scheme realizing object of the present invention is as follows:
A kind of super extra-high-voltage alternating current transformer outgoing line device, it comprises shielded-plate tube, shielding ball, inner insulating layer and the layering of being close to shielded-plate tube and the setting of shielding ball are respectively arranged at shielded-plate tube and shield the multilayer external insulation layer of ectosphere, inner insulating layer the end of shielded-plate tube and shielding ball end face on all to carry out bound edge, shielding ball is connected to the end, one end of shielded-plate tube, multiple first clamp is arranged at intervals with between the outer adjacent insulating barrier of shielded-plate tube, first clamp is arranged along the direction perpendicular to shielded-plate tube axis, first clamp is provided with oil through, the second clamp is provided with between the insulating barrier that shielding ectosphere is adjacent, second clamp is arranged along the axis of shielding ball, the oil duct of logical oil is formed between second clamp, second clamp is provided with the through hole for logical oil, the outside of the external insulation layer of described shielding ball is also provided with ripple grid, the outside of the external insulation layer of shielded-plate tube end is also provided with ripple grid, the first described clamp is positioned by the stay axially arranged along shielded-plate tube, and stay is fixed on the wall of shielded-plate tube external insulation layer correspondence position, the second described clamp is positioned by the supporting plate axially arranged perpendicular to shielding ball, and supporting plate is fixed on the wall of shielding ball external insulation layer correspondence position.
Further, described shielded-plate tube and shielding ball are metal material.
Described shielded-plate tube is L shape.
In aforementioned schemes, all pressing effect to strengthen leading-out terminal, preventing the generation of corona, described shielding ball is that spheroid is arranged, its inner formation cavity, and cavity one end arranges incoming line, the other end arranges line outlet, in cavity, the position of incoming line is provided with the flanged plate for connecting shielded-plate tube.
In order to prevent shielding ball end from puncturing, described shielding ball is metal material, and its two ends end face is provided with flanging.
In order to strengthen all pressures effect that end of incoming cables and outlet bring out, improve voltage endurance capability, two described ripple grid are taper, and its opening direction is all towards the one end arranging shielding ball.
Super extra-high-voltage alternating current transformer outgoing line device of the present invention, from shielded-plate tube one end inlet wire, from shielding ball one end outlet, shielded-plate tube one end is connected with the high pressure winding high-pressure side lead-out wire of super extra-high-voltage alternating current transformer, shielding ball one end connects supply line, shielded-plate tube and shielding ball are by being arranged on the Flange joint at the incoming line place of shielding ball, shielded-plate tube and shielding ball outside be close to shielded-plate tube and shielding ball inner insulating layer is set, inner insulating layer is bound edge on the end face of shielded-plate tube with shielding ball, strengthen its insulation property, external insulation layer layering is arranged, the first clamp perpendicular to shielded-plate tube axis is set between the external insulation layer outside shielded-plate tube, clamp is provided with oil through, the second clamp axially arranged along shielding ball is set between the external insulation layer outside shielding ball, second clamp is provided with the through hole for logical oil, insulating oil is circulated mutually, oil pressure is balanced, enhance the circulating heat conduction effect of insulating oil, also improve the insulation property of external insulation layer, because during outlet, shielding ball one end is vertically arranged, shielded-plate tube one end is horizontally disposed with, insulating oil flows to shielding ball from shielded-plate tube, the first clamp outside shielded-plate tube adopts and axially arranges perpendicular to shielded-plate tube, the contact area between insulating oil and external insulation layer can be expanded, improve its insulating properties and thermal conductivity, shielding ball place second clamp arranges the circulation that can ensure insulating oil along the axis of shielding ball.In order to strengthen the insulation property of super extra-high-voltage alternating current transformer outgoing line device further, the arranged outside ripple grid of the external insulation layer of shielding ball, the outside of the external insulation layer of shielded-plate tube end also arranges ripple grid, ripple grid are taper, its opening direction is towards shielding ball one end, enhance all pressures withstand voltage properties of super extra-high-voltage alternating current transformer outgoing line device, simultaneously, shielded-plate tube and shielding ectosphere are provided with multilayer external insulation layer, keep at a certain distance away between insulating barrier, add creepage distance, improve overall voltage endurance capability, super the withstand voltage of extra-high-voltage alternating current transformer outgoing line device is made to reach more than 1000KV.
Accompanying drawing explanation
Fig. 1 is the structural representation of super extra-high-voltage alternating current transformer outgoing line device of the present invention;
Fig. 2 be in Fig. 1 A ?A to cross-sectional schematic;
Fig. 3 be in Fig. 1 B ?B to cross-sectional schematic;
In figure, 1 is shielded-plate tube, and 2 is shielding ball, and 3 is inner insulating layer, and 4 is external insulation layer, and 5 is the first clamp, and 6 is oil through, and 7 is the second clamp, and 8 is through hole, and 9 is ripple grid, and 10 is flanged plate, and 11 is stay, and 12 is supporting plate.
Embodiment
Detailed illustrating is carried out below in conjunction with accompanying drawing 1 to accompanying drawing 3 pairs of the specific embodiment of the present invention:
Embodiment 1
A kind of super extra-high-voltage alternating current transformer outgoing line device, it comprises shielded-plate tube 1, shielding ball 2, inner insulating layer 3 and the layering of being close to shielded-plate tube 1 and the setting of shielding ball 2 are respectively arranged at shielded-plate tube 1 and the outer field multilayer external insulation layer 4 of shielding ball 2, inner insulating layer 3 the end of shielded-plate tube 1 and shielding ball 2 end face on all to carry out bound edge, shielding ball 2 is connected to the end, one end of shielded-plate tube 1, multiple first clamp 5 is arranged at intervals with between the outer adjacent insulating barrier of shielded-plate tube 1, first clamp 5 is arranged along the direction perpendicular to shielded-plate tube 1 axis, first clamp 5 is provided with oil through 6, the second clamp 7 is provided with between the outer adjacent insulating barrier of shielding ball 2, second clamp 7 is arranged along the axis of shielding ball 2, the oil duct of logical oil is formed between second clamp 7, second clamp 7 is provided with the through hole 8 for logical oil, the outside of the external insulation layer 4 of described shielding ball 2 is also provided with ripple grid 9, the outside of the external insulation layer 4 of shielded-plate tube 1 end is also provided with ripple grid 9, above-mentioned shielded-plate tube 1 and shielding ball 2 are that metallic aluminium or metallic copper make, described shielded-plate tube 1 is L shape.
Embodiment 2
On the basis of aforementioned schemes, all effect is pressed in order to strengthen leading-out terminal, prevent the generation of corona, described shielding ball 2 is arranged in spheroid, its inner formation cavity, cavity one end arranges incoming line, and the other end arranges line outlet, in cavity, the position of incoming line is provided with the flanged plate 10 for connecting shielded-plate tube 1.
In order to prevent shielding ball 2 end from puncturing, described shielding ball 2 is metal material, and its two ends end face is provided with flanging.
Embodiment 3
On the basis of aforementioned schemes, misplace along with the flowing of insulating oil to prevent the first clamp 5, the first described clamp 5 is positioned by the stay 11 axially arranged along shielded-plate tube 1, and stay 11 is fixed on the wall of shielded-plate tube external insulation layer 4 correspondence position.
In order to prevent the second clamp 7 from misplacing along with the flowing of insulating oil, the second described clamp 7 is positioned by the supporting plate 12 axially arranged perpendicular to shielding ball 2, and supporting plate 12 is fixed on the wall of shielding ball external insulation layer 4 correspondence position.
Embodiment 4
On the basis of aforementioned schemes, in order to strengthen all pressures effect that end of incoming cables and outlet bring out, improve voltage endurance capability, two described ripple grid 9 are taper, and its opening direction is all towards the one end arranging shielding ball 2.

Claims (6)

1. a super extra-high-voltage alternating current transformer outgoing line device, it is characterized in that: it comprises shielded-plate tube, shielding ball, inner insulating layer and the layering of being close to shielded-plate tube and the setting of shielding ball are respectively arranged at shielded-plate tube and shield the multilayer external insulation layer of ectosphere, inner insulating layer the end of shielded-plate tube and shielding ball end face on all to carry out bound edge, shielding ball is connected to the end, one end of shielded-plate tube, multiple first clamp is arranged at intervals with between the outer adjacent insulating barrier of shielded-plate tube, first clamp is arranged along the direction perpendicular to shielded-plate tube axis, first clamp is provided with oil through, the second clamp is provided with between the insulating barrier that shielding ectosphere is adjacent, second clamp is arranged along the axis of shielding ball, the oil duct of logical oil is formed between second clamp, second clamp is provided with the through hole for logical oil, the outside of the external insulation layer of described shielding ball is also provided with ripple grid, the outside of the external insulation layer of shielded-plate tube end is also provided with ripple grid, the first described clamp is positioned by the stay axially arranged along shielded-plate tube, and stay is fixed on the wall of shielded-plate tube external insulation layer correspondence position, the second described clamp is positioned by the supporting plate axially arranged perpendicular to shielding ball, and supporting plate is fixed on the wall of shielding ball external insulation layer correspondence position.
2. super extra-high-voltage alternating current transformer outgoing line device according to claim 1, is characterized in that: described shielded-plate tube and shielding ball are metal material.
3. super extra-high-voltage alternating current transformer outgoing line device according to claim 1, is characterized in that: described shielded-plate tube is L shape.
4. super extra-high-voltage alternating current transformer outgoing line device according to claim 1, it is characterized in that: described shielding ball is that spheroid is arranged, its inner formation cavity, cavity one end arranges incoming line, the other end arranges line outlet, in cavity, the position of incoming line is provided with the flanged plate for connecting shielded-plate tube.
5. super extra-high-voltage alternating current transformer outgoing line device according to claim 1, is characterized in that: described shielding ball is metal material, and its two ends end face is provided with flanging.
6. super extra-high-voltage alternating current transformer outgoing line device according to claim 1, is characterized in that: two described ripple grid are taper, and its opening direction is all towards the one end arranging shielding ball.
CN201210495198.6A 2012-11-28 2012-11-28 Super extra-high-voltage alternating current transformer outgoing line device Active CN102938305B (en)

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Application Number Priority Date Filing Date Title
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CN102938305B true CN102938305B (en) 2016-01-06

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106558404B (en) * 2015-09-24 2018-11-20 特变电工衡阳变压器有限公司 The outlet structure and high-impedance transformer of high-impedance transformer
CN107689286A (en) * 2017-07-03 2018-02-13 卧龙电气集团股份有限公司 The outlet shielding construction and its installation method of a kind of 500kV high-power transformers high-voltage connection

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101425370A (en) * 2008-05-07 2009-05-06 常州市英中电气有限公司 The insulation balance pipe and the manufacture method thereof that are used for superhigh pressure or extra-high voltage transformer
CN101425369A (en) * 2008-05-07 2009-05-06 常州市英中电气有限公司 Insulation voltage equalizing ball used for super-high or extra-high voltage transformer and production process thereof
CN201262883Y (en) * 2008-08-27 2009-06-24 保定天威集团有限公司 Two-pole parallel connection end 500kV outlet device OF transformer
CN202134348U (en) * 2011-07-27 2012-02-01 广东长牛电气有限公司 Oil-immersed type transformer
CN202189105U (en) * 2011-07-28 2012-04-11 中国电力科学研究院 System for testing insulation reliability of ultra-high pressure wire outlet device
CN202996534U (en) * 2012-11-28 2013-06-12 常州市英中电气有限公司 Extra-high voltage alternating current transformer line coiling-out device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101425370A (en) * 2008-05-07 2009-05-06 常州市英中电气有限公司 The insulation balance pipe and the manufacture method thereof that are used for superhigh pressure or extra-high voltage transformer
CN101425369A (en) * 2008-05-07 2009-05-06 常州市英中电气有限公司 Insulation voltage equalizing ball used for super-high or extra-high voltage transformer and production process thereof
CN201262883Y (en) * 2008-08-27 2009-06-24 保定天威集团有限公司 Two-pole parallel connection end 500kV outlet device OF transformer
CN202134348U (en) * 2011-07-27 2012-02-01 广东长牛电气有限公司 Oil-immersed type transformer
CN202189105U (en) * 2011-07-28 2012-04-11 中国电力科学研究院 System for testing insulation reliability of ultra-high pressure wire outlet device
CN202996534U (en) * 2012-11-28 2013-06-12 常州市英中电气有限公司 Extra-high voltage alternating current transformer line coiling-out device

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Inventor after: Li Jinzhong

Inventor after: Cheng Huanchao

Inventor after: Wang Ninghua

Inventor after: Yu Yingzhong

Inventor after: Han Xiancai

Inventor after: Wang Xiaoning

Inventor after: Wang Shaowu

Inventor after: Sun Gang

Inventor after: Sun Jiantao

Inventor after: Zhang Shuqi

Inventor after: Gao Fei

Inventor before: Yu Yingzhong

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20170420

Address after: Beijing City, Haidian District Qinghe small Camp Road No. 15

Co-patentee after: Changzhou Yingzhong Electrical Co., Ltd.

Patentee after: China Electric Power Research Institute

Address before: 213012 Jiangsu Province, the clock tower Development Zone, Changzhou Road, No. 385

Patentee before: Changzhou Yingzhong Electrical Co., Ltd.