CN102570361B - Ultrahigh voltage direct current wall bushing and shielding structure thereof - Google Patents
Ultrahigh voltage direct current wall bushing and shielding structure thereof Download PDFInfo
- Publication number
- CN102570361B CN102570361B CN201110420500.7A CN201110420500A CN102570361B CN 102570361 B CN102570361 B CN 102570361B CN 201110420500 A CN201110420500 A CN 201110420500A CN 102570361 B CN102570361 B CN 102570361B
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- Prior art keywords
- edge
- shield cylinder
- horn
- sleeve pipe
- annular
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/26—Lead-in insulators; Lead-through insulators
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
Abstract
The invention relates to an ultrahigh voltage direct current wall bushing and a shielding structure thereof. The shielding structure comprises an inner shielding barrel and an outer shielding barrel, which are coaxially sleeved. A trumpet-shaped opening is formed in one end of the outer shielding barrel, and is provided with an annular overturned edge. An annular fixed plate is fixed on the periphery of the small end of the trumpet-shaped opening. A trumpet-shaped sleeve is fixed on the periphery of the inner shielding barrel, and is also provided with an annular overturned edge. The shielding structure also comprises an axially arranged support pillar, wherein one end of the support pillar is fixed on the annular fixed plate, and the other end of the support pillar is fixed at the edge of the trumpet-shaped sleeve. When the shielding structure is used, one end of an insulating rod is wrapped by the annular overturned edge of the trumpet-shaped opening of the outer shielding barrel, the other end of the insulating rod is wrapped by the annular overturned edge of the trumpet-shaped sleeve, and then the connected structures of the insulating rod and the shielding barrels are positioned in the annular shielding structure, so that the problem of influence of the connected structures of the insulating rod and the shielding barrels on the distribution of an electric field in the wall bushing is solved.
Description
Technical field
The present invention relates to a kind of ultrahigh voltage direct current wall bushing in extra-high voltage electric power facility, also relate to a kind of extra-high voltage wall feed-through sleeve shielding construction simultaneously.
Background technology
At present, the shielding construction that the many employings of extra-high voltage wall feed-through sleeve are made up of two coaxial sheathed shielding cylinders, axial or radial support is adopted between two shielding cylinders, wherein, when adopting radial support, because the distance between two shielding cylinders is little, therefore radial support can cause the electric field in sleeve through walls can undergo mutation in radial support placement, thus causes local electric field strength in wall bushing excessive; And when adopting axial support, the distribution of sleeve internal electric field through walls can be affected for the insulating rod of axial support and the syndeton of two sleeves, make sleeve internal electric field skewness through walls, and then make concrete electric field strength in sleeve through walls excessive.
Summary of the invention
The present invention proposes a kind of ultrahigh voltage direct current wall bushing shielding construction, be intended to solve shielding cylinder in prior art and the problem of wall bushing internal electric field distribution can be affected for the syndeton of the insulating rod of axial support.
The technical scheme of this ultrahigh voltage direct current wall bushing shielding construction is as follows:
A kind of ultrahigh voltage direct current wall bushing shielding construction, comprise coaxially sheathed inner shield cylinder and external shield cylinder, one end of inner shield cylinder is stretched out from one end of external shield cylinder, the opening of described external shield cylinder in one end of the external part near inner shield cylinder is flare openings, the edge of described flare openings has the annular hooked back to its small end and turns edge, and described annular turns edge and is provided with the ring-type fixing plate on the periphery being fixed on external shield cylinder between the small end of trumpet-shaped opening; Described inner shield cylinder is fixed with horn-like sleeve pipe on the periphery of external part, the opening of the flare openings of described horn-like sleeve pipe is towards the opening of the flare openings of the corresponding end with inner shield cylinder towards identical, horn-like sleeve pipe has the annular that the small end to horn-like sleeve pipe hooks back and turns edge in the edge away from inner shield cylinder, described annular turns edge and has gap between the periphery of horn-like sleeve pipe; Described shielding construction is also included in the support column laid with axis being parallel that is external shield cylinder that is that arrange between horn-like sleeve pipe and external shield cylinder, one end of described support column is fixed on ring-type fixing plate through the through hole that the edge of external shield cylinder is offered, the parcel and the annular that the edge being fully screened off by this outer cylinder has turns edge, the other end of support column turns edge through the annular of horn-like sleeve pipe and gap the periphery of horn-like sleeve pipe is fixed on the edge of horn-like sleeve pipe, and to be turned edge parcel by the annular that the edge of horn-like sleeve pipe has.
Described insulating rod is fixed on ring-type fixing plate by the screwed hole of corresponding processing in the inserts that ring-type fixing plate revolves the screw established and insulating rod end and arrange.
The screwed hole edge of described insulating rod by horn-like sleeve pipe revolving corresponding processing in the inserts of the screw established and the setting of insulating rod end is fixed on the edge of horn-like sleeve pipe.
The opening of the end of described inner shield cylinder and external shield cylinder is flare openings.
Present invention also offers a kind of extra-high voltage wall feed-through sleeve being equiped with this shielding construction, the technical scheme of this extra-high voltage wall feed-through sleeve is as follows:
A kind of extra-high voltage wall feed-through sleeve, comprise the shielding construction arranged in cylindrical shell through walls and cylindrical shell through walls, described shielding construction comprises coaxially sheathed inner shield cylinder and external shield cylinder, one end of inner shield cylinder is stretched out from one end of external shield cylinder, the opening of described external shield cylinder in one end of the external part near inner shield cylinder is flare openings, the edge of described flare openings has the annular hooked back to its small end and turns edge, and described annular turns edge and is provided with the ring-type fixing plate on the periphery being fixed on external shield cylinder between the small end of trumpet-shaped opening; Described inner shield cylinder is fixed with horn-like sleeve pipe on the periphery of external part, the opening of the flare openings of described horn-like sleeve pipe is towards the opening of the flare openings of the corresponding end with inner shield cylinder towards identical, horn-like sleeve pipe has the annular that the small end to horn-like sleeve pipe hooks back and turns edge in the edge away from inner shield cylinder, described annular turns edge and has gap between the periphery of horn-like sleeve pipe; Described shielding construction is also included in the support column laid with axis being parallel that is external shield cylinder that is that arrange between horn-like sleeve pipe and external shield cylinder, one end of described support column is fixed on ring-type fixing plate through the through hole that the edge of external shield cylinder is offered, the parcel and the annular that the edge being fully screened off by this outer cylinder has turns edge, the other end of support column turns edge through the annular of horn-like sleeve pipe and gap the periphery of horn-like sleeve pipe is fixed on the edge of horn-like sleeve pipe, and to be turned edge parcel by the annular that the edge of horn-like sleeve pipe has.
Described inner shield cylinder and external shield cylinder are at least two, and all inner shield cylinders and external shield cylinder coaxially sheathed.
Described insulating rod is fixed on ring-type fixing plate by the screwed hole of corresponding processing in the inserts that ring-type fixing plate revolves the screw established and insulating rod end and arrange.
The screwed hole edge of described insulating rod by horn-like sleeve pipe revolving corresponding processing in the inserts of the screw established and the setting of insulating rod end is fixed on the edge of horn-like sleeve pipe.
The opening of the end of described inner shield cylinder and external shield cylinder is flare openings.
The annular that the edge being fully screened off by this outer the flare openings of an end in the present invention for one end of the insulating rod of axial support has turns edge parcel, the other end to be turned edge parcel by the annular that the edge of horn-like sleeve pipe fixing on the periphery of inner shield cylinder has, make the syndeton looping shielding construction of insulating rod and shielding cylinder, in use, because the two ends of insulating rod are all wrapped, therefore the syndeton avoiding insulating rod and shielding cylinder affects the problem that sleeve internal electric field through walls distributes, thus improve the total quality of wall bushing, extend the useful life of wall bushing, decrease the probability that sleeve through walls in use has an accident.Meanwhile, due in this shielding construction, the structure of insulating rod simply, is easily processed, thus reduces the manufacturing cost of shielding construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiments of the invention;
Fig. 2 is the syndeton schematic diagram in Fig. 1 between inside and outside shielding cylinder.
Embodiment
The embodiment of ultrahigh voltage direct current wall bushing shielding construction of the present invention: as depicted in figs. 1 and 2, this shielding construction is primarily of inner shield cylinder 1, external shield cylinder 2 and inside and outside shielded-plate tube 1, the insulating rod 5 playing axial support effect arranged between 2 is formed, the each embedding inserts 4 in insulating rod 5 two ends, together with inner shield cylinder 1 and external shield cylinder 2 are coaxially sheathed, and one end of inner shield cylinder 1 is stretched out from one end of external shield cylinder 2, inside and outside shielding cylinder 1, 2 be open-endedly flare openings, in inner shield cylinder one end near horn-like sleeve pipe 6, the edge of its flare openings has the annular hooked back to its small end and turns edge, the annular at the edge of external shield cylinder 2 turns edge and is provided with the ring-type fixing plate 3 on the periphery being fixed on external shield cylinder 2 between the small end of flare openings.Simultaneously, the horn-like sleeve pipe 6 corresponding to the flare openings of the corresponding end of external shield cylinder 2 is fixed with in the periphery external part of shielding cylinder 2 (namely outside) of the end of stretching out from one end of external shield cylinder 2 of inner shield cylinder 1, namely the opening of the flare openings of horn-like sleeve pipe 6 is towards the opening of the flare openings of the corresponding end with external shield cylinder 2 towards identical, also have at the edge of horn-like sleeve pipe 6 annular hooked back to its small end to turn edge, this annular turns edge and has certain gap between the periphery of horn-like sleeve pipe 6.And insulating rod 5 is just arranged between external shield cylinder 2 and horn-like sleeve pipe 6, and the axis being parallel of the axis of insulating rod 5 and external shield cylinder 2, the through hole offered on one end of insulating rod 5 is turned edge by the annular of the flare openings of the corresponding end of external shield cylinder 2 is fixed on ring-type fixing plate 3, the other end turns edge through the annular of horn-like sleeve pipe 6 and gap the periphery of horn-like sleeve pipe 6 is fixed on the edge of horn-like sleeve pipe 6, and ring-type fixing plate 3 is fixedly connected with the inserts 4 in insulating rod 5 respectively by both revolving the screw established with the edge of horn-like sleeve pipe 6.Simultaneously, the annular that the edge that one end of insulating rod 5 is fully screened off by this outer the flare openings of cylinder 2 end has turns edge parcel, the other end to be turned edge parcel by the annular that the edge of horn-like sleeve pipe 6 fixing on the periphery of inner shield cylinder 1 has, thus avoid in use, insulating rod 5 and the syndeton of the junction of inside and outside shielding cylinder 1,2 affect the problem that wall bushing internal electric field distributes.
In the above-described embodiments, shielding cylinder is two, and in other embodiments, shielding cylinder also more than two, but should coaxially can be set-located between all shielding cylinders, is interconnected between adjacent two shielding cylinders by above-mentioned axial support structure.
In the above-described embodiments, the two ends of insulating rod are fixed on ring-type fixing plate and horn-like sleeve pipe respectively by screw, and in other embodiments, the two ends of insulating rod also can be riveted on the edge of ring-type fixing plate and horn-like sleeve pipe respectively.
The embodiment of extra-high voltage wall feed-through sleeve of the present invention: this wall bushing mainly contains body through walls and shielding construction is formed, wherein shielding construction is in the inside of cylindrical shell through walls, and the annexation between the concrete formation of shielding construction and each building block has illustrated in the above-described embodiments, therefore no longer describe in detail in the present invention.
In the above-described embodiments, shielding construction is formed primarily of inner shield cylinder and external shield cylinder, in other embodiments, shielding construction also can be formed more than the shielding cylinder of two, and the annexation wherein between adjacent two shielding cylinders is identical with the annexation between inside and outside shielding cylinder.
Claims (9)
1. a ultrahigh voltage direct current wall bushing shielding construction, comprise coaxially sheathed inner shield cylinder and external shield cylinder, one end of inner shield cylinder is stretched out from one end of external shield cylinder, it is characterized in that: the opening of described external shield cylinder in one end of the external part near inner shield cylinder is flare openings, the edge of described flare openings has the annular hooked back to its small end and turns edge, and described annular turns edge and is provided with the ring-type fixing plate on the periphery being fixed on external shield cylinder between the small end of trumpet-shaped opening; Described inner shield cylinder is fixed with horn-like sleeve pipe on the periphery of external part, the opening of the flare openings of described horn-like sleeve pipe is towards the opening of the flare openings of the corresponding end with inner shield cylinder towards identical, horn-like sleeve pipe has the annular that the small end to horn-like sleeve pipe hooks back and turns edge in the edge away from inner shield cylinder, described annular turns edge and has gap between the periphery of horn-like sleeve pipe; Described shielding construction is also included in the support column laid with axis being parallel that is external shield cylinder that is that arrange between horn-like sleeve pipe and external shield cylinder, one end of described support column is fixed on ring-type fixing plate through the through hole that the edge of external shield cylinder is offered, the parcel and the annular that the edge being fully screened off by this outer cylinder has turns edge, the other end of support column turns edge through the annular of horn-like sleeve pipe and gap the periphery of horn-like sleeve pipe is fixed on the edge of horn-like sleeve pipe, and to be turned edge parcel by the annular that the edge of horn-like sleeve pipe has.
2. ultrahigh voltage direct current wall bushing shielding construction according to claim 1, it is characterized in that: described support column is insulating rod, described insulating rod is fixed on ring-type fixing plate by the screwed hole of corresponding processing in the inserts that ring-type fixing plate revolves the screw established and insulating rod end and arrange.
3. ultrahigh voltage direct current wall bushing shielding construction according to claim 1, it is characterized in that: described support column is insulating rod, the screwed hole edge of described insulating rod by horn-like sleeve pipe revolving corresponding processing in the inserts of the screw established and the setting of insulating rod end is fixed on the edge of horn-like sleeve pipe.
4. the ultrahigh voltage direct current wall bushing shielding construction according to claim 1 or 2 or 3, is characterized in that: the opening of the end of described inner shield cylinder and external shield cylinder is flare openings.
5. one kind is equiped with the extra-high voltage wall feed-through sleeve of shielding construction according to claim 1, comprise the shielding construction arranged in cylindrical shell through walls and cylindrical shell through walls, described shielding construction comprises coaxially sheathed inner shield cylinder and external shield cylinder, one end of inner shield cylinder is stretched out from one end of external shield cylinder, it is characterized in that: the opening of described external shield cylinder in one end of the external part near inner shield cylinder is flare openings, the edge of described flare openings has the annular hooked back to its small end and turns edge, described annular turns edge and is provided with the ring-type fixing plate on the periphery being fixed on external shield cylinder between the small end of trumpet-shaped opening, described inner shield cylinder is fixed with horn-like sleeve pipe on the periphery of external part, the opening of the flare openings of described horn-like sleeve pipe is towards the opening of the flare openings of the corresponding end with inner shield cylinder towards identical, horn-like sleeve pipe has the annular that the small end to horn-like sleeve pipe hooks back and turns edge in the edge away from inner shield cylinder, described annular turns edge and has gap between the periphery of horn-like sleeve pipe, described shielding construction is also included in the support column laid with axis being parallel that is external shield cylinder that is that arrange between horn-like sleeve pipe and external shield cylinder, one end of described support column is fixed on ring-type fixing plate through the through hole that the edge of external shield cylinder is offered, the parcel and the annular that the edge being fully screened off by this outer cylinder has turns edge, the other end of support column turns edge through the annular of horn-like sleeve pipe and gap the periphery of horn-like sleeve pipe is fixed on the edge of horn-like sleeve pipe, and to be turned edge parcel by the annular that the edge of horn-like sleeve pipe has.
6. ultrahigh voltage direct current wall bushing according to claim 5, is characterized in that: described inner shield cylinder and/or external shield cylinder are at least two, and all inner shield cylinders and external shield cylinder coaxially sheathed.
7. ultrahigh voltage direct current wall bushing according to claim 5, it is characterized in that: described support column is insulating rod, described insulating rod is fixed on ring-type fixing plate by the screwed hole of corresponding processing in the inserts that ring-type fixing plate revolves the screw established and insulating rod end and arrange.
8. ultrahigh voltage direct current wall bushing according to claim 5, it is characterized in that: described support column is insulating rod, the screwed hole edge of described insulating rod by horn-like sleeve pipe revolving corresponding processing in the inserts of the screw established and the setting of insulating rod end is fixed on the edge of horn-like sleeve pipe.
9. the ultrahigh voltage direct current wall bushing according to claim 5 to 8 any one, is characterized in that: the opening of the end of described inner shield cylinder and external shield cylinder is flare openings.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110420500.7A CN102570361B (en) | 2011-12-15 | 2011-12-15 | Ultrahigh voltage direct current wall bushing and shielding structure thereof |
| PCT/CN2012/000897 WO2013086774A1 (en) | 2011-12-15 | 2012-06-30 | Ultra-high voltage direct current wall bushing and shielding structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110420500.7A CN102570361B (en) | 2011-12-15 | 2011-12-15 | Ultrahigh voltage direct current wall bushing and shielding structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102570361A CN102570361A (en) | 2012-07-11 |
| CN102570361B true CN102570361B (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110420500.7A Active CN102570361B (en) | 2011-12-15 | 2011-12-15 | Ultrahigh voltage direct current wall bushing and shielding structure thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102570361B (en) |
| WO (1) | WO2013086774A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109817418A (en) * | 2017-11-21 | 2019-05-28 | 特变电工沈阳变压器集团有限公司 | A kind of open type lead shielding cylinder connection structure |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969096A (en) * | 2012-12-06 | 2013-03-13 | 山东彼岸电力科技有限公司 | High-voltage outgoing line composite bushing |
| CN105356392B (en) * | 2015-11-17 | 2019-04-05 | 国家电网公司 | A kind of ultrahigh voltage direct current wall bushing component |
| CN106153440B (en) * | 2016-07-12 | 2022-12-27 | 南方电网科学研究院有限责任公司 | Ultrahigh voltage direct current composite wall bushing inner guide rod anti-seismic test sample and wall bushing anti-seismic test sample |
| CN106092727B (en) * | 2016-07-12 | 2019-04-23 | 南方电网科学研究院有限责任公司 | Compound wall bushing shock test sample of extra-high voltage direct-current and preparation method thereof |
| CN107576826A (en) * | 2017-09-26 | 2018-01-12 | 杭州西湖电子研究所 | A kind of external shield cable connector component |
| CN108565758B (en) * | 2018-05-10 | 2024-03-26 | 河南森源电气股份有限公司 | Box-type substation |
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| CN101404393A (en) * | 2008-11-05 | 2009-04-08 | 中国西电电气股份有限公司 | Incoming/outgoing line inflation casing tube for high-voltage switch gear |
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| CN202424057U (en) * | 2011-12-15 | 2012-09-05 | 平高集团有限公司 | Extra-high voltage direct current wall bushing and shielding structure thereof |
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| JPH11126526A (en) * | 1997-10-23 | 1999-05-11 | Toshiba Corp | Gas bushing |
| JP3660563B2 (en) * | 2000-06-20 | 2005-06-15 | 株式会社オートネットワーク技術研究所 | Shield wire terminal connection structure |
| CN201149960Y (en) * | 2007-07-17 | 2008-11-12 | 浙江雷博司电器有限公司 | New type through-wall sleeve |
| EP2063512A1 (en) * | 2007-11-21 | 2009-05-27 | Abb Research Ltd. | A method of producing an electric power device, and an electric power device |
| CN201466610U (en) * | 2009-08-14 | 2010-05-12 | 中国西电电气股份有限公司 | Wall bushing with double-shield structure |
| CN201629495U (en) * | 2010-01-14 | 2010-11-10 | 浙江雷博司电器有限公司 | Wall-through shielded bushing of high-voltage switchgear cabinet |
-
2011
- 2011-12-15 CN CN201110420500.7A patent/CN102570361B/en active Active
-
2012
- 2012-06-30 WO PCT/CN2012/000897 patent/WO2013086774A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201282298Y (en) * | 2008-10-09 | 2009-07-29 | 中国西电电气股份有限公司 | Gas-filled type line-feeding casing tube |
| CN101404393A (en) * | 2008-11-05 | 2009-04-08 | 中国西电电气股份有限公司 | Incoming/outgoing line inflation casing tube for high-voltage switch gear |
| CN202424057U (en) * | 2011-12-15 | 2012-09-05 | 平高集团有限公司 | Extra-high voltage direct current wall bushing and shielding structure thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109817418A (en) * | 2017-11-21 | 2019-05-28 | 特变电工沈阳变压器集团有限公司 | A kind of open type lead shielding cylinder connection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013086774A1 (en) | 2013-06-20 |
| CN102570361A (en) | 2012-07-11 |
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