CN113808798B - Ultra/extra-high voltage GIS/GIL bus - Google Patents
Ultra/extra-high voltage GIS/GIL bus Download PDFInfo
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- CN113808798B CN113808798B CN202111075525.8A CN202111075525A CN113808798B CN 113808798 B CN113808798 B CN 113808798B CN 202111075525 A CN202111075525 A CN 202111075525A CN 113808798 B CN113808798 B CN 113808798B
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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
- H01B17/38—Fittings, e.g. caps; Fastenings 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
- H01B17/14—Supporting insulators
- H01B17/16—Fastening of insulators to support, to conductor, or to adjoining insulator
Abstract
The invention discloses an ultra/extra-high voltage GIS/GIL bus, which comprises a shell, a current-carrying conductor, a high-voltage end conductor and an insulator body, wherein the current-carrying conductor is coaxially arranged in the shell, two ends of the high-voltage end conductor are coaxially connected with the current-carrying conductor, and the insulator body comprises an insulator resin body, and a high-voltage end metal insert and a low-voltage end metal insert which are respectively arranged at two ends of the insulator resin body; the high-voltage end metal insert is connected with the high-voltage end conductor, the axis of the insulator body is perpendicular to the axis of the current-carrying conductor, the low-voltage end metal insert is connected with the shell, and the axis of the insulator body is horizontally arranged. The invention can improve the surface insulation performance and mechanical performance of the insulator for the ultra/extra-high voltage GIS, inhibit the influence of metal particles in the GIS on insulation, and ensure the safe and stable operation of the insulator for the GIS.
Description
Technical Field
The invention belongs to the technical field of structural design of power equipment, and particularly relates to an ultra/extra-high voltage GIS/GIL bus.
Background
The insulator is a key component of extra-high voltage Gas Insulated metal enclosed Switchgear (GIS), plays a role in supporting a conductor and electrically insulating, can bear impact voltage such as lightning and operation and mechanical stress such as short-circuit electrodynamic force and vibration under long-term operation, and has the advantages and disadvantages of mechanical strength and insulating performance which are related to the safety and stability of system operation. In addition, the GIS generates foreign matters due to unavoidable friction among structural members in the processes of installation, transportation and the like, and the foreign matters bring remarkable influence on insulation in the GIS. At present, the ultra/extra-high voltage GIS insulator has a plurality of surface flashover or explosion faults in the operation process, and faults such as insulator metal-epoxy bonding interface peeling, discharging and the like occur in the long-term operation.
The ultra/extra-high voltage GIS insulator structure design needs to consider various factors such as manufacturing, process, installation and the like, and needs to consider two parts of insulation and machinery when the ultra/extra-high voltage GIS insulator structure design. The design of the insulating structure relates to the resin part form of the insulator, the shape of a low-voltage end metal insert, the shielding of three gas combination points of metal-epoxy-SF 6, the installation mode of the insulator, the uniformity of electric field distribution of key parts and the like, and also comprises the capture and inhibition of metal foreign matters in the GIS. The mechanical structure design mainly considers the strength of a metal-epoxy bonding interface, and avoids the peeling of the interface, thereby further causing mechanical or insulation faults. The development and optimization of the novel ultra/extra-high voltage GIS insulator have great significance for updating the ultra/extra-high voltage GIS insulator and solving the problems of insulation and mechanical strength in the GIS
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a support insulator for an ultra/extra-high voltage GIS (gas insulated switchgear), so as to improve the surface insulation performance and the mechanical performance of the insulator for the ultra/extra-high voltage GIS, inhibit the influence of metal particles in the GIS on the insulation and ensure the safe and stable operation of the insulator for the GIS.
The technical scheme adopted by the invention is as follows:
an ultra/extra-high voltage GIS/GIL bus comprises a shell, a current-carrying conductor, a high-voltage end conductor and an insulator body, wherein the current-carrying conductor is coaxially arranged inside the shell, two ends of the high-voltage end conductor are coaxially connected with the current-carrying conductor, and the insulator body comprises an insulator resin body, and a high-voltage end metal insert and a low-voltage end metal insert which are respectively arranged at two ends of the insulator resin body; the high-voltage end metal insert is connected with the high-voltage end conductor, the axis of the insulator body is perpendicular to the axis of the current-carrying conductor, the low-voltage end metal insert is connected with the shell, and the axis of the insulator body is horizontally arranged.
Preferably, an insulator mounting counter bore is formed in the position, connected with the insulator body, of the shell, an insulator mounting seat is arranged at the bottom of the insulator mounting counter bore, and the low-voltage end metal insert is connected with the insulator mounting seat; and a shielding structure for shielding the high-voltage end of the insulator body is arranged on the high-voltage end conductor, and the high-voltage end metal insert is connected with the shielding structure.
Preferably, a through hole is formed in one side of the low-voltage end of the insulator body on the shell, a section of metal pipe is connected to the outer side of the through hole on the shell, a flange cover is mounted at the end portion of the metal pipe in a sealing mode, the through hole, the metal pipe and the flange cover form the insulator mounting counter bore, the insulator mounting seat is mounted on the inner side of the flange cover, and the top of the insulator mounting seat is lower than the inner surface of the shell.
Preferably, the high-voltage end conductor is provided with a trapezoidal groove serving as the shielding structure on one side of the high-voltage end of the insulator body, the high-voltage end metal insert is connected with the bottom surface of the horizontal groove of the trapezoidal groove, and the length and the width of the bottom surface of the horizontal groove are at least greater than the diameter of the high-voltage end metal insert by 10 mm.
Preferably, the low-voltage end metal insert and the high-voltage end metal insert are hemispherical balls, the spherical surfaces of the low-voltage end metal insert and the high-voltage end metal insert are connected with the insulator resin body, the plane side of the high-voltage end metal insert is connected with the high-voltage end conductor, and the plane side of the low-voltage end metal insert is connected with the shell.
Preferably, the high-voltage end conductor is provided with a mounting hole, the axis of the mounting hole is perpendicular to the axis of the high-voltage end conductor, a bolt is arranged in the mounting hole, and the high-voltage end metal insert is connected with the high-voltage end conductor through the mounting hole and the bolt.
Preferably, the mounting hole extends outwards along the circumferential direction of the mounting hole to form a first collecting cavity, and the opening edge of the mounting hole is chamfered with a fillet not less than 10 mm.
Preferably, the high-voltage end metal insert and the low-voltage end metal insert are both provided with an annular groove on the surface and a knurl on the surface at the end connected with the insulator resin body.
Preferably, the housing is provided with a second collecting cavity extending downwards at the lowest point of the corresponding position of the insulator body, and SF is arranged in the second collecting cavity6The decomposition product adsorbent and the upper port of the second collecting cavity are provided with a grid-type cover plate.
Preferably, the insulator resin body is of a revolving body structure, and the parts of the insulator resin body, which are provided with the high-voltage end metal insert and the low-voltage end metal insert, are both provided with convex smooth curved surfaces; a plurality of umbrella skirts are arranged on one side of the low-voltage end of the insulator resin body, and the umbrella skirt closest to one side of the high-voltage end of the insulator resin body is transited to a convex smooth curved surface of the high-voltage end of the insulator resin body through a concave circular arc surface; the diameters of the umbrella skirts are sequentially increased and the thicknesses of the umbrella skirts are sequentially reduced along the direction from the high-voltage end to the low-voltage end of the insulator resin body.
The invention has the following beneficial effects:
in the ultra/extra-high voltage GIS/GIL bus, the axis of the insulator body is vertical to the axis of the current-carrying conductor, and the axis of the insulator body is horizontally arranged, so that metal foreign bodies are not easy to attach to the insulator, the influence of the metal foreign bodies on the insulating property of the insulator can be greatly reduced, and the occurrence of surface discharge accidents in the running process of the insulator is avoided; the insulator can reduce the mechanical load which is not beneficial to a metal-epoxy bonding interface in a stress mode, improve the mechanical performance of the insulator and ensure the safe and stable operation of the insulator for the GIS.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an extra/extra-high voltage GIS/GIL bus bar according to the invention.
FIG. 2 is a radial sectional view of an extra/extra high voltage GIS/GIL bus bar according to the present invention.
FIG. 3 is a sub-axial sectional view of the extra/extra high voltage GIS/GIL bus bar of the present invention.
FIG. 4 is a schematic diagram of a metal insert of the extra/extra high voltage GIS/GIL bus bar according to the invention.
FIG. 5 is a schematic view of a second collection chamber and its grid cover in an embodiment of the invention.
FIG. 6(a) is a distribution diagram of the surface synthesized field intensity of the supporting insulator in the extra/extra-high voltage GIS/GIL bus bar according to the present invention; FIG. 6(b) is a tangential field strength distribution plot for the surface of the support insulator in the extra/extra high voltage GIS/GIL busbar of the present invention.
FIG. 7(a) is the surface electric field distribution of the high-voltage end metal insert in the extra/extra-high voltage GIS/GIL bus of the present invention; FIG. 7(b) is the surface electric field distribution of the low-voltage end metal insert in the extra/extra-high voltage GIS/GIL bus of the present invention.
In the figure, 1 insulator body, 2 high-voltage end conductor, 3 second collection cavity, 4 insulator installation counter bores, 5 insulator installation seats, 6 low-voltage end metal inserts, 7 high-voltage end metal inserts, 8 insulator resin bodies, 9 convex arc surfaces, 10 concave arc surfaces, 11 first sheds, 12 second sheds, 13 third sheds, 14 hemispherical spherical surfaces, 15 annular grooves, 16 installation holes, 16-1 first collection cavity, 17 trapezoidal grooves, 18 horizontal groove bottom surfaces, 19 grid type cover plates, 20 current-carrying conductor, 21 shell and 22 flange covers.
Detailed Description
The invention is further described below with reference to the figures and examples.
Referring to fig. 1 and 2, the extra/extra-high voltage GIS/GIL bus of the present invention includes a housing 21, a current-carrying conductor 20, a high-voltage end conductor 2 and an insulator body 1, wherein the current-carrying conductor 20 is coaxially disposed inside the housing 21, two ends of the high-voltage end conductor 2 are coaxially connected with the current-carrying conductor 20, the insulator body 1 includes an insulator resin body 8, and a high-voltage end metal insert 7 and a low-voltage end metal insert 6 respectively mounted on two ends of the insulator resin body 8; the high-voltage end metal insert 7 is connected with the high-voltage end conductor 2, the axis of the insulator body 1 is vertical to the axis of the current-carrying conductor 20, the low-voltage end metal insert 6 is connected with the shell 21, and the axis of the insulator body 1 is horizontally arranged. The axis of the insulator body 1 is positioned in the horizontal plane, and the mounting position is vertical to the gravity direction, so that the influence of metal foreign matters on the insulating property of the insulator can be greatly reduced, and the occurrence of surface discharge accidents of the insulator in the operation process is avoided; the insulator can reduce the mechanical load which is not beneficial to a metal-epoxy bonding interface in a stress mode, and the mechanical performance of the insulator is improved.
As a preferred embodiment of the present invention, referring to fig. 1 and fig. 2, an insulator mounting counterbore 4 is arranged at a position on a housing 21, which is connected to an insulator body 1, an insulator mounting seat 5 is arranged at the bottom of the insulator mounting counterbore 4, and a low-voltage end metal insert 6 is connected to the insulator mounting seat 5; the high-voltage end conductor 2 is provided with a shielding structure for shielding the high-voltage end of the insulator body 1, and the high-voltage end metal insert 7 is connected with the shielding structure. (ii) a The design of the shielding structure on the high-voltage end conductor 2, the counter bore for mounting the insulator and the mounting seat is matched, and the epoxy-metal-SF can be effectively shielded by combining the metal inserts at the high-voltage end and the low-voltage end of the insulator6And the three combination areas formed by the gas improve the insulating property of the insulator.
Referring to fig. 1-3, as a preferred embodiment of the present invention, a through hole is formed in a housing 21 on one side of a low-voltage end of an insulator body 1, a section of metal pipe is connected to the housing 21 on the outer side of the through hole, a flange cover 22 is hermetically mounted on the end of the metal pipe, the through hole, the metal pipe and the flange cover 22 form an insulator mounting counterbore 4, an insulator mounting seat 5 is mounted on the inner side of the flange cover 22, and as shown in fig. 2 and 3, the top of the insulator mounting seat 5 is lower than the inner surface of the housing 21.
Referring to fig. 1 and 3, as a preferred embodiment of the present invention, a trapezoidal groove 17 serving as the shielding structure is formed on the high-voltage end conductor 2 on the high-voltage end side of the insulator body 1, the high-voltage end metal insert 7 is connected with a horizontal groove bottom surface 18 of the trapezoidal groove 17, the length and the width of the horizontal groove bottom surface 18 are at least 10mm greater than the diameter of the high-voltage end metal insert 7, and the structure can provide a good shielding effect on the high-voltage end metal insert 7.
Referring to fig. 1 to 4, as a preferred embodiment of the present invention, the low-pressure side metal insert 6 and the high-pressure side metal insert 7 are formed in the shape of hemispherical balls, the spherical sides of the low-pressure side metal insert 6 and the high-pressure side metal insert 7 are connected to the insulator resin body 8, the planar side of the high-pressure side metal insert 7 is connected to the high-pressure side conductor 2, and the planar side of the low-pressure side metal insert 6 is connected to the housing 21. The low-voltage end metal insert 6 and the high-voltage end metal insert 7 are hemispherical balls, so that the electric field distribution on the surface of the metal inserts can be effectively uniform, and the probability of occurrence of the insulator cracking fault is reduced.
As a preferred embodiment of the present invention, referring to fig. 1 to 3, a mounting hole 16 is formed on the high-voltage end conductor 2, an axis of the mounting hole 16 is perpendicular to an axis of the high-voltage end conductor 2, a bolt is disposed in the mounting hole 16, and the high-voltage end metal insert 7 and the high-voltage end conductor 2 are connected through the mounting hole 16 and the bolt.
Referring to fig. 3, as a preferred embodiment of the present invention, the mounting hole 16 is formed with a first collecting cavity 16-1 extending outward along the circumferential direction thereof, the edge of the opening of the mounting hole 16 is chamfered with a fillet of not less than 10mm, and the first collecting cavity 16-1 can collect metal filings generated during the installation and operation of the high-voltage end metal insert 7 on one hand, and can shield the metal filings, and on the other hand, can reduce the weight of the high-voltage end conductor.
Referring to fig. 4, 7(a) and 7(b), the ends of the high-voltage end metal insert 7 and the low-voltage end metal insert 6, which are connected to the insulator resin body 8, are provided with annular grooves 15 on the surface and knurls on the surface, and the annular grooves and the knurls on the metal inserts are processed to improve the metal-epoxy bonding interface strength, improve the mechanical properties of the insulator, such as tensile strength and bending resistance, and ensure sufficient mechanical strength and allowance. The annular groove is positioned at the bottom of the metal insert, and can effectively shield the influence of surface state change on the electric field distribution of the insert caused by knurling treatment.
Referring to fig. 1, 2 and 5, as a preferred embodiment of the present invention, a second collection chamber 3 is extended downward from the lowest point of the housing 21 at a position corresponding to the insulator body 1, and SF is disposed in the second collection chamber 36The decomposition product adsorbent, and a grid-type cover plate 9 is arranged at the upper port of the second collection cavity 3. The second collecting cavity 3 has the functions of metal particle capture and atmosphere stabilization, and the surface insulation performance of the insulator is further improved. The strip-shaped counter bore is capped by the grid-shaped cover plate, so that hardware particles near the insulator can be effectively captured in the GIS point-carrying pressurizing process, and the metal particles are prevented from escaping. SF is placed in the second collection chamber 36The decomposition product adsorbent can keep its atmosphere in the vicinity of the insulator stable.
Referring to fig. 1 to 3, fig. 7(a) and 7(b), the insulator resin body 8 is a revolving structure, and the parts of the insulator resin body 8 on which the high-voltage end metal insert 7 and the low-voltage end metal insert 6 are mounted are both provided with convex smooth curved surfaces; a plurality of sheds are arranged on one side of the low-voltage end of the insulator resin body 8, and the shed closest to one side of the high-voltage end of the insulator resin body 8 is transited to a convex smooth curved surface of the high-voltage end of the insulator resin body 8 through a concave circular arc surface 10; the diameters of the sheds are sequentially increased and the thicknesses of the sheds are sequentially decreased in the direction from the high-voltage end to the low-voltage end of the insulator resin body 8. The outline of the insulator resin body 8 with the structure is roughly in a hourglass structure, and the umbrella skirt structure with unequal diameters, unequal thicknesses and unequal intervals is combined, so that the synthesized field intensity and the tangential field intensity on the surface of the insulator can be effectively uniform, the creepage distance of the insulator along the surface is increased, and the insulation performance of the insulator along the surface is improved.
Examples
The ultra/extra-high voltage GIS/GIL bus comprises an insulator body 1, a high-voltage end conductor 2, a second collecting cavity 3, an insulator mounting counter bore 4 and a mounting seat 5, wherein the insulator body 1 comprises a low-voltage end metal insert 6, a high-voltage end metal insert 7 and an insulator resin body 8. The second collecting cavity 3 is a strip-shaped counter bore, and the central line of the second collecting cavity 3 and the symmetry axis of the insulator body 1 are in the same plane. The insulator body 1 is installed between the installation seat 5 and the high-voltage end conductor 2, and the symmetry axis of the insulator body 1 is located in a horizontal plane and perpendicular to the gravity direction. The insulator resin body 8 comprises a first umbrella skirt 11, a second umbrella skirt 12 and a third umbrella skirt 13, the diameters of the first umbrella skirt 11, the second umbrella skirt 12 and the third umbrella skirt 13 are sequentially increased, the thicknesses of the umbrella skirts are sequentially reduced, and the distance between the first umbrella skirt 11 and the second umbrella skirt 12 is larger than the distance between the second umbrella skirt 12 and the third umbrella skirt 13; the insulator resin body 8 is integrally formed into an hourglass structure by the convex arc surface 9 and the concave arc surface 10 of the insulator resin body 8, the first umbrella skirt 11, the second umbrella skirt 12 and the third umbrella skirt 13. The low-pressure end metal insert 6 and the high-pressure end metal insert 7 are hemispherical, one side surface is a plane, and the other side surface is a hemispherical spherical surface 14. Annular grooves 15 are formed in the bottoms of the pressing end metal insert 6 and the high-voltage end metal insert 7, and knurling processing is performed on the grooves before the insulator body 1 is poured. The high-voltage end conductor 2 is provided with a mounting hole 16, the edge of the mounting hole is inverted to form a fillet of not less than 10mm, a threaded hole is formed in the mounting hole 16, and the high-voltage end conductor 2 is connected with the high-voltage end metal insert 7 through the threaded hole through a bolt. The inside of the mounting hole 16 extends towards the circumference thereof and is provided with a first collecting cavity 16-1. A trapezoidal groove 17 is dug on the high-voltage end conductor 2, and the length and the width of a horizontal groove bottom surface 18 on the trapezoidal groove 17 are at least 10mm larger than the diameter of the high-voltage end metal insert 7. The mounting seat 5 is completely embedded in the insulator mounting counterbore 4 and does not protrude from the inner surface of the high-voltage end conductor 2. The mounting seat 5 and the low-voltage end metal insert 6 are fixed through a key groove and a bolt structure. Inside the second collection chamber 3 is placed SF6 decomposition product adsorbent, the second collection chamber 3 being closed by a grid-type cover plate 19.
According to the structure of the embodiment, the 550kV GIS bus is designed, and the electric field distribution of each key part of the insulator is calculated in a simulation mode by applying a finite element algorithm. When the lightning impulse voltage is applied to the central conductor, the maximum value of the composite field intensity on the surface of the insulator is 17.0kV/mm as shown in FIG. 6(a), the maximum value of the tangential field intensity on the surface of the insulator is 11.8kV/mm as shown in FIG. 6(b), and the maximum values of the surface field intensities on the metal inserts at the high-voltage end and the low-voltage end are 21.5kV/mm and 17.0kV/mm respectively as shown in FIG. 7(a) and FIG. 7 (b). As can be seen from the graphs in FIGS. 6(a) to 7(b), the 550kV GIS bus insulator has the advantages of uniform surface electric field distribution, reasonable structure and no local electric field concentration part.
Claims (10)
1. The ultra/extra-high voltage GIS/GIL bus is characterized by comprising a shell (21), a current-carrying conductor (20), a high-voltage end conductor (2) and an insulator body (1), wherein the current-carrying conductor (20) is coaxially arranged inside the shell (21), two ends of the high-voltage end conductor (2) are coaxially connected with the current-carrying conductor (20), and the insulator body (1) comprises an insulator resin body (8) and high-voltage end metal inserts (7) and low-voltage end metal inserts (6) which are respectively arranged at two ends of the insulator resin body (8); the high-voltage end metal insert (7) is connected with the high-voltage end conductor (2), the axis of the insulator body (1) is vertical to the axis of the current-carrying conductor (20), the low-voltage end metal insert (6) is connected with the shell (21), and the axis of the insulator body (1) is horizontally arranged; the axis of the insulator body extends from the high-voltage end metal insert to the low-voltage end metal insert.
2. The extra/extra-high voltage GIS/GIL bus bar as claimed in claim 1, wherein a position on the housing (21) connected with the insulator body (1) is provided with an insulator mounting counter bore (4), the bottom of the insulator mounting counter bore (4) is provided with an insulator mounting seat (5), and the low-voltage end metal insert (6) is connected with the insulator mounting seat (5); the high-voltage end conductor (2) is provided with a shielding structure for shielding the high-voltage end of the insulator body (1), and the high-voltage end metal insert (7) is connected with the shielding structure.
3. The ultra/extra-high voltage GIS/GIL bus bar as claimed in claim 2, wherein a through hole is formed in one side of a low-voltage end of the insulator body (1) on the shell (21), a section of metal pipe is connected to the outer side of the through hole on the shell (21), a flange cover (22) is hermetically mounted at the end of the metal pipe, the through hole, the metal pipe and the flange cover (22) form the insulator mounting counter bore (4), the insulator mounting seat (5) is mounted on the inner side of the flange cover (22), and the top of the insulator mounting seat (5) is lower than the inner surface of the shell (21).
4. The extra/extra-high voltage GIS/GIL bus bar according to claim 2, wherein a trapezoidal groove (17) serving as the shielding structure is formed in one side of the high-voltage end of the insulator body (1) on the high-voltage end conductor (2), the high-voltage end metal insert (7) is connected with a horizontal groove bottom surface (18) of the trapezoidal groove (17), and the length and the width of the horizontal groove bottom surface (18) are at least 10mm greater than the diameter of the high-voltage end metal insert (7).
5. The extra/extra-high voltage GIS/GIL bus bar according to claim 2, wherein the low-voltage end metal insert (6) and the high-voltage end metal insert (7) are shaped as hemispherical balls, one spherical sides of the low-voltage end metal insert (6) and the high-voltage end metal insert (7) are connected with the insulator resin body (8), one planar side of the high-voltage end metal insert (7) is connected with the high-voltage end conductor (2), and one planar side of the low-voltage end metal insert (6) is connected with the shell (21).
6. The ultra/extra-high voltage GIS/GIL bus bar as claimed in claim 1, wherein a mounting hole (16) is formed in the high-voltage end conductor (2), the axis of the mounting hole (16) is perpendicular to the axis of the high-voltage end conductor (2), a bolt is arranged in the mounting hole (16), and the high-voltage end metal insert (7) and the high-voltage end conductor (2) are connected with the bolt through the mounting hole (16).
7. The extra/extra-high voltage GIS/GIL bus bar according to claim 6, wherein the mounting hole (16) is formed with a first collection chamber (16-1) extending outwards along a circumferential direction thereof, and an aperture edge of the mounting hole (16) is chamfered with a fillet of not less than 10 mm.
8. The extra/extra high voltage GIS/GIL bus as claimed in claim 1, wherein the ends of the high voltage end metal insert (7) and the low voltage end metal insert (6) connected to the insulator resin body (8) are both provided with annular grooves (15) and knurls on the surfaces.
9. The extra/extra-high voltage GIS/GIL bus bar as claimed in claim 1, wherein the housing (21) is provided with a second collection cavity (3) extending downwards at the lowest point of the corresponding position of the insulator body (1), and SF is arranged in the second collection cavity (3)6The decomposition product adsorbent, and a grid-type cover plate (9) is arranged at the upper port of the second collection cavity (3).
10. The extra/extra-high voltage GIS/GIL bus bar as claimed in claim 1, wherein the insulator resin body (8) is of a revolving structure, and the parts of the insulator resin body (8) on which the high-voltage end metal insert (7) and the low-voltage end metal insert (6) are mounted are both provided with convex smooth curved surfaces; a plurality of umbrella skirts are arranged on one side of the low-voltage end of the insulator resin body (8), and the umbrella skirt closest to one side of the high-voltage end of the insulator resin body (8) is transited to a convex smooth curved surface of the high-voltage end of the insulator resin body (8) through a concave arc surface (10); the diameters of the umbrella skirts are sequentially increased and the thicknesses of the umbrella skirts are sequentially reduced along the direction from the high-voltage end to the low-voltage end of the insulator resin body (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111075525.8A CN113808798B (en) | 2021-09-14 | 2021-09-14 | Ultra/extra-high voltage GIS/GIL bus |
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| CN202111075525.8A CN113808798B (en) | 2021-09-14 | 2021-09-14 | Ultra/extra-high voltage GIS/GIL bus |
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| CN113808798A CN113808798A (en) | 2021-12-17 |
| CN113808798B true CN113808798B (en) | 2022-06-07 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE785652A (en) * | 1971-07-12 | 1973-01-02 | Alsthom Cgee | DEVICE FOR FIXING A HOLLOW ELECTRIC CONDUCTOR IN A COAXIAL SHEATH |
| WO2012066614A1 (en) * | 2010-11-15 | 2012-05-24 | 三菱電機株式会社 | Gas insulated busbar |
| CN203351300U (en) * | 2013-06-26 | 2013-12-18 | 东莞市高能电气股份有限公司 | Composite insulator for high voltage fuse |
| CN203522065U (en) * | 2013-11-07 | 2014-04-02 | 山东达驰阿尔发电气有限公司 | Vertical-section phase-isolated bus conductor temporary supporting structure |
| CN207250241U (en) * | 2017-09-20 | 2018-04-17 | 西安交通大学 | A kind of three pillar supporting insulator of dumbbell shape for ultra-high/extra-high voltage GIL |
| CN108963928B (en) * | 2018-07-20 | 2021-04-20 | 西安交通大学 | A basic unit and piping lane transmission of electricity GIL for among super/special high voltage piping lane transmission of electricity GIL |
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