CN108242605B - A kind of extra-high voltage double shield composite bushing - Google Patents
A kind of extra-high voltage double shield composite bushing Download PDFInfo
- Publication number
- CN108242605B CN108242605B CN201711472412.5A CN201711472412A CN108242605B CN 108242605 B CN108242605 B CN 108242605B CN 201711472412 A CN201711472412 A CN 201711472412A CN 108242605 B CN108242605 B CN 108242605B
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- China
- Prior art keywords
- bolted
- shield
- end cap
- double shield
- extra
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
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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
- H01B17/56—Insulating bodies
- H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
- H01B17/583—Grommets; Bushings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
-
- 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
- H05K9/0007—Casings
- H05K9/0009—Casings with provisions to reduce EMI leakage through the joining parts
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Cable Accessories (AREA)
- Insulators (AREA)
Abstract
A kind of extra-high voltage double shield composite bushing, it is related to special voltage electrical equipment technical field, including a middle conductor, insulating sleeve is socketed on the outside of the middle conductor, the insulating sleeve is bolted with end cap, middle conductor is bolted with end cap, insulating sleeve is bolted with counter flange, end cap is bolted with double shield ring, end cap is equipped with connecting terminal, it is equipped with heat dissipation regulating mechanism between the end cap and connecting terminal, is equipped with double shield mechanism in the insulating sleeve.Present invention optimizes the double shield ring of composite bushing, radiator and internal double shield mechanisms, reduce radio interference, effectively prevent connecting terminal partial discharge phenomenon, enhance local heat dissipation performance, improve inside pipe casing non-uniform electric problem, the dielectric level and service life for improving casing ensure that the security performance of GIS device operation.
Description
Technical field
The present invention relates to special voltage electrical equipment technical fields, specifically a kind of to be used for 1100kV gas-insulated metal
The extra-high voltage double shield composite bushing of switchgear (abbreviation GIS).
Background technique
As the commercialization of China's extra-high voltage grid is built, electric system T & D Technology makes constant progress, to reduce
Electric energy loss during power transmission and transformation, the voltage class for improving power transmission and transformation line is imperative, wants to 1100kV GIS device
It asks and increasingly improves, important component of the 1100kV composite bushing as ultra-high voltage GIS equipment, to guarantee in equipment running process
Reliability, need to have good mechanics and electric property.The big portion of 1100kV composite bushing that domestic each GIS producer succeeds in developing
Divide and use glass fiber material and silica gel sheath structure, the shielding of internal equipment single-layer metal has light-weight, antifouling, explosion-proof, anti-
The advantages that shake, improves the mechanical support performance and electrical insulation properties of casing to a certain extent.
1100kV composite bushing is poor in the presence of local heat dissipation performance at present, internal electric field is unevenly distributed leads to internal field
The problems such as intensity is excessive, insulation margin is lower reduces the reliability of equipment safety operation.
Summary of the invention
For existing ultra-high voltage GIS equipment 1100kV composite bushing in structure function and technical shortcoming, originally
Invention provides a kind of extra-high voltage double shield composite bushing, can be to avoid the generation of the above problem.
The technical scheme adopted by the invention to solve the technical problem is that:
A kind of extra-high voltage double shield composite bushing, including a middle conductor, the middle conductor outside are socketed with insulation sleeve
Pipe, the insulating sleeve are bolted with end cap, and middle conductor is bolted with end cap, insulating sleeve and transition method
Orchid is bolted, and end cap is bolted with double shield ring, and end cap is equipped with connecting terminal, the end cap and terminals
It is equipped with heat dissipation regulating mechanism between son, is equipped with double shield mechanism in the insulating sleeve.
The double shield mechanism includes inner shield and external shield, and inner shield and external shield pass through the exhausted of 12 circumference uniform distributions
Edge column is fixedly connected, and six cylinder grooves are uniformly arranged on the connecting flange of external shield upper end, and insulated column one end is inserted into cylinder groove
It is bolted with external shield, the insulated column of inner shield and downside is connected by transition bracket, small shielding and big bracket by bolt
It connects, external shield and the big bracket of six circumference uniform distributions are bolted.
Further, the middle conductor is equipped with upper shielding, and the upper shielding is bolted to connection on end cap.
Further, the heat dissipation regulating mechanism is radiator, and the silver-plated end face of radiator is bolted with end cap.
Further, the heat dissipation regulating mechanism includes outer housing, upper plate, elevating lever, guide sleeve, mobile bar and voussoir,
Upper plate is equipped on the downside of the connecting terminal, the upper plate is connected with elevating lever, is equipped with guide sleeve, the lifting in the outer housing
Bar can slide up and down in guide sleeve, and outer housing two sides are provided with through-hole, mobile bar is sliding combined in the through-hole, described
Mobile bar is equipped with voussoir, and the elevating lever is equipped with the wedge slot cooperated with voussoir.
Further, it is equipped with hollow tube in the middle part of the mobile bar, the hollow tube is connected with a plurality of angularly disposed air-breathing
Pipe.
Further, the connecting flange, which is gone into battle, shows several sliding grooves, and sprocket wheel, institute are sliding combined in the sliding groove
It states and chain is installed on the outside of sprocket wheel, the chain is equipped with multiple insulated columns.
Further, big bracket and the aperture of inner shield junction are long hole.
Further, the inner shield is bolted with connecting flange, and the connecting flange is connected by bolt on one side
It is connected to small shielding, insulated column has been bolted in the connecting flange another side, and insulated column is bolted with external shield,
External shield is bolted with counter flange.
Further, the transition bracket is bowl structure.
The beneficial effects of the present invention are:
1, the design optimization of the present invention double shield ring of 1100kV composite bushing, radiator and internal double shield mechanism, drop
Radio interference in low ambient enviroment, effectively prevents connecting terminal partial discharge phenomenon, enhances 1100kV compound sleeve
Pipe part heat dissipation performance improves inside pipe casing non-uniform electric problem, solves inside pipe casing local electric field strength mistake
Big problem improves the dielectric level and service life of casing, ensure that the security performance of GIS device operation.
2, can also accelerate to radiate while the design of heat dissipation regulating mechanism can easily dismantle connecting terminal.
3, double shield ring and insulating sleeve and end cap are bolted, at effectively uniform insulating sleeve and connecting terminal
Field distribution, avoid the radio interference in ambient enviroment.
4, inner shield is fixedly connected with external shield by the insulated column of 12 circumference uniform distributions, improves the exhausted of insulating sleeve
Edge performance.
5, transition bracket is bowl structure, can be improved field uniformity on the downside of insulated column.
6, bracket and the aperture of inner shield junction are long hole, are easily assembled.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the cross-sectional view of heat dissipation regulating mechanism；
Fig. 3 is the structural schematic diagram of insulated column installation and adjustment mechanism.
In figure: 1- double shield ring；2- connecting terminal；3- heat dissipation regulating mechanism；4- end cap；It is shielded on 5-；6- insulating sleeve；
7- middle conductor；8- counter flange；9- double shield mechanism；10- inner shield；11- external shield；The small shielding of 12-；13- connecting flange；
14- insulated column；15- transition bracket；The big bracket of 16-, 17- annular mounting frame, 21- sliding groove, 22- sprocket wheel, 23- chain, outside 31-
Shell, 32- upper plate, 33- elevating lever, 34- guide sleeve, 35- mobile bar, 36- voussoir, 37- hollow tube, 38- air intake duct.
Specific embodiment
As shown in Figure 1 to Figure 3, a kind of extra-high voltage double shield composite bushing, including a middle conductor 7, the middle conductor
Outside is socketed with insulating sleeve 6, and the insulating sleeve 6 is bolted with end cap 4, and middle conductor 7 and end cap 4 pass through bolt
Connection.Insulating sleeve 6 is bolted with counter flange 8.7 side of middle conductor is additionally provided with shielding 5, the upper screen
5 are covered to be bolted to connection on end cap 4.
End cap 4 is bolted with double shield ring 1, and end cap 4 is equipped with connecting terminal 2, at connecting terminal
Local temperature height caused by heat dissipation performance difference leads to electric field change, security risk occurs.
Heat dissipation regulating mechanism 3 is equipped between the end cap and connecting terminal, the heat dissipation regulating mechanism can be radiator, dissipate
The hot silver-plated end face of device is bolted with end cap.Silver-plated process work is used in radiator and middle conductor both ends specified range
Skill improves casing heat dissipation performance and through-current capability.
A kind of optimization design of scheme, the heat dissipation regulating mechanism include outer housing 31, upper plate 32, elevating lever 33, guiding
Set 34, mobile bar 35 and voussoir 36, the connecting terminal downside are equipped with upper plate 32, and the upper plate is connected with elevating lever, described outer
Guide sleeve 34 is equipped in shell, the elevating lever can slide up and down in guide sleeve, and outer housing two sides are provided with through-hole, described
It is sliding combined with mobile bar 35 in through-hole, the mobile bar is equipped with voussoir 36, and the elevating lever is equipped with to be cooperated with voussoir
Wedge slot is able to drive elevating lever realization when mobile bar moves left and right and moves up and down.This design enables to connecting terminal to pacify
It is more convenient convenient to fill.And outer housing and connecting terminal transmission of heat by contact, increase heat dissipation area.
Hollow tube 37 is equipped in the middle part of the mobile bar, the hollow tube is connected with a plurality of angularly disposed air intake duct 38.It is logical
It crosses from hollow tube interior suction gas, so that forming negative pressure in hollow tube, the presence of negative pressure to be located at the intracorporal hot-air of shell from suction
It is taken away in tracheae, then will form negative pressure in outer housing also to reduce the temperature at this in air-cooled form from extraneous air-breathing.
It is equipped with double shield mechanism 9 in the insulating sleeve, the double shield mechanism includes inner shield 10 and external shield 11, interior
Shielding 10 is fixedly connected with external shield 11 by the insulated column 14 of 12 circumference uniform distributions, the connecting flange 13 of 11 upper end of external shield
On uniformly arrange six cylinder grooves, is bolted in 14 one end of insulated column insertion cylinder groove with external shield 11, inner shield 10
It is bolted with the insulated column 14 of downside by transition bracket 15, small shielding 12 and big bracket 16, external shield 11 and six circles
The big bracket 16 of Zhou Junbu is bolted.
Optimization design, transition bracket 15 are bowl structure.
Optimization design, the connecting flange, which is gone into battle, shows several sliding grooves 21, is sliding combined with sprocket wheel in the sliding groove
22, the sprocket wheel outside is equipped with chain 23, and the chain is equipped with multiple insulated columns 14.By this design, can facilitate
Change insulated column position how much it is easy to disassemble with installation so that fixed insulated column is changed to packaged type.
Big bracket 16 and 10 junction aperture of inner shield are long hole, reduce installation difficulty, improve equipment operational safety
Property.
The further refinement of scheme, the inner shield 10 are bolted with connecting flange 13, the connecting flange one
Small shielding 12 has been bolted in face, and the connecting flange another side has been bolted insulated column 14, insulated column 14 with
External shield 11 is bolted, and external shield 11 is bolted with counter flange 8.
Except for the technical features described in the specification, it all is technically known to those skilled in the art.
Claims (8)
1. a kind of extra-high voltage double shield composite bushing, including a middle conductor, the middle conductor outside is socketed with insulating sleeve,
The insulating sleeve is bolted with end cap, and middle conductor is bolted with end cap, insulating sleeve and counter flange
It is bolted, end cap is bolted with double shield ring, and end cap is equipped with connecting terminal, characterized in that the end cap
It is equipped with heat dissipation regulating mechanism between connecting terminal, is equipped with double shield mechanism, double shield mechanism packet in the insulating sleeve
Inner shield and external shield are included, inner shield is fixedly connected with external shield by the insulated column of 12 circumference uniform distributions, external shield upper end
Connecting flange on uniformly arrange six cylinder grooves, is bolted in insulated column one end insertion cylinder groove with external shield, it is interior
It shields and is bolted with the insulated column of downside by transition bracket, small shielding and big bracket, external shield and six circumference uniform distributions
Big bracket be bolted,
The heat dissipation regulating mechanism includes outer housing, upper plate, elevating lever, guide sleeve, mobile bar and voussoir, under the connecting terminal
Side is equipped with upper plate, and the upper plate is connected with elevating lever, is equipped with guide sleeve in the outer housing, the elevating lever can be in guide sleeve
It slides up and down, outer housing two sides is provided with through-hole, mobile bar is sliding combined in the through-hole, the mobile bar is equipped with wedge
Block, the elevating lever are equipped with the wedge slot cooperated with voussoir.
2. a kind of extra-high voltage double shield composite bushing according to claim 1, characterized in that the middle conductor is equipped with upper
Shielding, the upper shielding are bolted to connection on end cap.
3. a kind of extra-high voltage double shield composite bushing according to claim 1, characterized in that the heat dissipation regulating mechanism is
Radiator, the silver-plated end face of radiator are bolted with end cap.
4. a kind of extra-high voltage double shield composite bushing according to claim 1, characterized in that be equipped in the middle part of the mobile bar
Hollow tube, the hollow tube are connected with a plurality of angularly disposed air intake duct.
5. a kind of extra-high voltage double shield composite bushing according to any one of claim 1 to 4, characterized in that the company
Acting flange, which is gone into battle, shows several sliding grooves, and sprocket wheel is sliding combined in the sliding groove, is equipped with chain on the outside of the sprocket wheel, institute
Chain is stated equipped with multiple insulated columns.
6. a kind of extra-high voltage double shield composite bushing according to claim 1, characterized in that big bracket is connect with inner shield
Place's aperture is long hole.
7. a kind of extra-high voltage double shield composite bushing according to claim 1, characterized in that the inner shield and connection method
Orchid is bolted, and small shielding has been bolted in the connecting flange on one side, and the connecting flange another side passes through spiral shell
It tethers and is connected to insulated column, insulated column is bolted with external shield, and external shield is bolted with counter flange.
8. a kind of extra-high voltage double shield composite bushing according to claim 1, characterized in that the transition bracket is bowl-shape
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711472412.5A CN108242605B (en) | 2017-12-29 | 2017-12-29 | A kind of extra-high voltage double shield composite bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711472412.5A CN108242605B (en) | 2017-12-29 | 2017-12-29 | A kind of extra-high voltage double shield composite bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108242605A CN108242605A (en) | 2018-07-03 |
| CN108242605B true CN108242605B (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711472412.5A Active CN108242605B (en) | 2017-12-29 | 2017-12-29 | A kind of extra-high voltage double shield composite bushing |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505226A (en) * | 1995-02-12 | 1996-04-09 | Breth; Newton R. | Raised actuator mount |
| CN202930193U (en) * | 2012-09-25 | 2013-05-08 | 成都博课启睿科技有限公司 | Double-shielded dry-type mutual inductor |
| CN103187686A (en) * | 2013-04-01 | 2013-07-03 | 山东彼岸电力科技有限公司 | Extra-high-pressure wall bushing |
| CN203193126U (en) * | 2013-04-01 | 2013-09-11 | 山东彼岸电力科技有限公司 | Extra high tension wall bushing |
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| Publication number | Publication date |
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| CN108242605A (en) | 2018-07-03 |
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