CN214755405U - Integrated three-phase common-bin insulator for GIL and power transmission line thereof - Google Patents
Integrated three-phase common-bin insulator for GIL and power transmission line thereof Download PDFInfo
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- CN214755405U CN214755405U CN202022983049.7U CN202022983049U CN214755405U CN 214755405 U CN214755405 U CN 214755405U CN 202022983049 U CN202022983049 U CN 202022983049U CN 214755405 U CN214755405 U CN 214755405U
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Abstract
The utility model discloses a GIL is with integration three-phase storehouse insulator altogether and transmission line thereof, include the slip insulation support piece and the fixed insulation support piece that set up at the interval in the confined transmission line casing, all be provided with the particle trapper between slip insulation support piece and fixed insulation support piece and the casing, fixed insulation support piece includes insulation support piece and fixed inserts, insulation support piece is provided with the tube-shape stabilizer blade that is triangular distribution for platelike and circumference, and insulation support piece wears to be equipped with the middle takeover between adjacent stabilizer blade, and insulation support piece's middle part has been seted up the centre bore, and insulation support piece, stabilizer blade and middle takeover are by the integrative injection moulding of epoxy. The utility model aims at providing a but the three-phase is storehouse structure internal slidable regulation's integration support insulation system altogether, and then reduces the sealed face of flange butt joint, reduces the gas leakage risk.
Description
Technical Field
The utility model relates to a transmission equipment field especially relates to a GIL is with integration three-phase storehouse insulator altogether and transmission line thereof.
Background
At present, three-phase common-cabin enclosed buses are supported by basin-type insulators and are mainly suitable for shorter power transmission lines, and with the rise of the domestic GIL market, the long-distance power transmission requirements such as petrochemical industry, urban underground power transmission lines and the like are gradually increased within a certain range, so that high requirements are provided for equipment operation safety of the enclosed buses, adaptability to complex laying environments, manufacturing and installation cost saving, equipment operation maintenance cost and the like, the GIB structure of the single-phase enclosed buses or basin-type support insulators cannot meet the requirements, the supporting distance is generally smaller than 5m when the basin-type insulators are used for supporting, and the lengths of standard units of GIS and GIL are restricted. Due to the limitation of the inner diameter of the cylinder body and the welding process, the fixed points are mostly distributed on the edge of the flange, and the fixed points cannot be arranged at any position of the cylinder body. This mode has increased the flange butt joint face and has increased the risk of gas leakage, and processing technology is loaded down with trivial details. Therefore, an integrated supporting and insulating structure which can be slidably adjusted in a three-phase common-bin structure is needed, so that the butt joint sealing surface of flanges is reduced, and the air leakage risk is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the above-mentioned prior art, aim at providing one kind at three-phase storehouse structure internal slidable regulation's integration support insulation system altogether, and then reduce the sealed face of flange butt joint, reduce the risk of leaking gas.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
an integrated three-phase common-bin insulator for GIL and a power transmission line thereof comprise a sliding insulating support piece and a fixed insulating support piece which are arranged in a closed power transmission line shell at intervals, particle traps are arranged between the sliding insulating support piece and the fixed insulating support piece as well as between the shell, the fixed insulating support piece comprises an insulating support piece and a fixed insert, the insulating support piece is platy and is circumferentially provided with tubular support legs which are distributed in a triangular manner, a middle connecting pipe is arranged between adjacent support legs of the insulating support piece in a penetrating manner, the middle part of the insulating support piece is provided with a central hole, the insulating support piece, the support legs and the middle connecting pipe are integrally injection-molded by epoxy resin, the fixed insert is arranged in each support leg of the insulating support piece, the fixed insert comprises a support seat which is embedded in each support leg and a fixed plate which is fixedly arranged on the support seat by a fixing piece, and the top side of each fixed plate is fixed with the inner wall of the shell, the particle catcher is fixed between the supporting seat and the fixing plate;
slip insulating support piece includes insulating support piece, slip ground connection inserts and pulley inserts, the slip ground connection inserts all sets up in insulating support piece's top stabilizer blade, and the slip ground connection inserts includes the supporting seat of nestification in the stabilizer blade, and the supporting seat internal fixation is provided with and is used for inserting fixed cover and the supporting seat top of establishing ground contact utmost point and is fixed mutually with the particle trapper, and ground contact utmost point bottom and supporting seat between be provided with the spring, the pulley inserts includes the supporting seat of nestification in the stabilizer blade, and the supporting seat internal fixation is provided with the fixed cover that has the runner, and the particle trapper is all worn out at the top of each fixed cover, and the conductive rod is worn to be equipped with jointly in the middle of the coaxial takeover on slip insulating support piece and the fixed insulating support piece.
Further, the stabilizer blade is cylindric, and the bottom of stabilizer blade is to insulating support piece shrink, and the junction of stabilizer blade bottom and insulating support piece to and all have circular arc transition between stabilizer blade and the middle takeover.
Furthermore, the insulating support piece is annularly covered with a cylindrical conductor covering part outside the middle connecting pipe, and the outer surface of the conductor covering part is provided with an arc transition.
Furthermore, the middle connecting pipe and the conducting rod are in interference fit through an inserted wedge.
Further, the fixing sleeve is made of an organic material.
Further, the ground contact is made of graphite or a graphite alloy.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses standard cell length is the biggest can support 18 m's conductor in a flexible way, and standard cell comprises a fixed insulating support piece and two slip insulating support pieces to the accessible is adjusted slip insulating support piece and is changed standard cell's length. The mode reduces the number of the butt joint surfaces of the flanges, reduces the air leakage probability, and has great significance for reducing the cost of the long-distance transmission bus and increasing the productivity efficiency. The fixed insulating support piece and the sliding insulating support piece are provided with the particle catcher in a matching way, so that particles which can cause discharge near the cross arm insulator can be caught, an insulating surface is protected, and the probability of creeping discharge is reduced.
2. Insulating support piece, stabilizer blade and middle takeover are by the integrative injection moulding of epoxy, and fixed insulating support piece can be constituteed to set up fixed inserts in insulating support piece's the stabilizer blade, and slip insulating support piece can be constituteed to set up a slip ground connection inserts and two pulley inserts in slip insulating support piece's the stabilizer blade, compares basin insulation system or single-column type insulation system, and the assembly of being convenient for is stabilized more to the product structure, is more convenient for use in complicated operating mode, shaft, inclined shaft. Adopt wedge-shaped connection structure between conducting rod and the middle takeover, compare welding and bolted connection mode, reduced welding slag and the risk that the bolt hole friction produced the metal fillings.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic structural view of an insulating support member according to the present invention;
FIG. 4 is a schematic side view of the insulating support member of the present invention;
FIG. 5 is a schematic structural view of a fixed insulating support member according to the present invention;
FIG. 6 is a schematic structural view of a sliding insulating support member according to the present invention;
fig. 7 is a schematic view of the mounting structure of the fixing plate of the present invention;
fig. 8 is a schematic structural view of the interference fit between the middle adapter and the conductive rod of the present invention.
Description of reference numerals:
1-shell, 2-insulating support, 3-conducting rod, 4-connecting flange, 5-fixing plate, 6-particle catcher, 21-supporting leg, 22-fixing insert, 23-middle connecting tube, 24-central hole, 25-conductor coating part, 26-sliding grounding insert, 27-pulley insert, 28-supporting seat, 29-fixing sleeve, 30-grounding contact, 31-rotating wheel and 32-wedge.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 8, an integrated three-phase common-bin insulator for GIL and a power transmission line thereof comprise a sliding insulating support member and a fixed insulating support member which are arranged in a closed power transmission line shell 1 at intervals, wherein particle traps 6 are arranged between the sliding insulating support member and the shell 1, the fixed insulating support member comprises an insulating support member 2 and a fixed insert 22, the insulating support member 2 is plate-shaped and is circumferentially provided with tubular support legs 21 which are distributed in a triangular manner, the insulating support member 2 is provided with a middle connecting tube 23 between adjacent support legs 21 in a penetrating manner, the middle part of the insulating support member 2 is provided with a central hole 24, the insulating support member 2, the support legs 21 and the middle connecting tube 23 are integrally injection-molded by epoxy resin, the fixed insert 22 is arranged in each support leg 21 of the insulating support member 2, and the fixed insert 22 comprises a support seat 28 which is nested in the support leg 21, and the fixed plate 5 fixed on supporting seat 28 through the stationary part, the top side of every fixed plate 5 is fixed with inner wall of the body 1, the particle trap 6 is fixed between supporting seat 28 and fixed plate 5;
slip insulating support includes insulating support 2, slip ground insert 26 and pulley inserts 27, slip ground insert 26 all sets up in insulating support 2's top stabilizer blade 21, and slip ground insert 26 is including the supporting seat 28 of nestification in stabilizer blade 21, and supporting seat 28 internal fixation is provided with fixed cover 29 and the supporting seat 28 top that are used for inserting ground contact pole 30 and is fixed mutually with particle catcher 6, is provided with the spring between ground contact pole 30 bottom and the supporting seat 28, pulley inserts 27 is including the supporting seat 28 of nestification in stabilizer blade 21, and supporting seat 28 internal fixation is provided with fixed cover 29 that has runner 31, and particle catcher 6 is all worn out at the top of each fixed cover 29, and the coaxial intermediate nozzle 23 wears to be equipped with conducting rod 3 jointly on slip insulating support and the fixed insulating support.
The support leg 21 is cylindrical, the bottom of the support leg 21 is contracted towards the insulating support member 2, and circular arc transitions are formed at the joint of the bottom of the support leg 21 and the insulating support member 2 and between the support leg 21 and the middle connecting pipe 23. The insulating support member 2 is surrounded by a cylindrical conductor coating portion 25 outside the intermediate connecting pipe 23, and the outer surface of the conductor coating portion 25 has an arc transition. The arc transition can make the connection of the support leg 21 and the intermediate pipe 23 with the insulating support 2 and the outer surface of the conductor coating part 25 not easily form dead angles, thereby avoiding foreign matters from being retained on the insulating support 2, reducing the flashover and breakdown risks and being more beneficial to the application in a vertical shaft. The arc transition and cylindrical conductor coating part 25 can make the electric field distribution of the integrated insulating support member 2 uniform, reduce the over-high electric field intensity in the partial area of the insulating support member 2, and reduce the surface flashover phenomenon and flashover voltage. But also the volume of the connection of the insulating support 2 with the intermediate adapter 23, the fixing insert 22, the sliding grounding insert 26 and the pulley insert 27 is increased, thereby increasing the capacitance of the insulating support 2. The bottom of the legs 21 is shrunk toward the insulating support 2, which also saves the cost of epoxy resin for injection molding the insulating support 2.
The fixing sleeve 29 is made of an organic material, and nylon or polytetrafluoroethylene can be used in the embodiment, so that the fixing sleeve 29 is in contact with metal to have a lubricating effect, and the shell 1 is prevented from being scratched in the movement process. The grounding contact 30 is made of graphite or graphite alloy, and has strong wear resistance and no debris caused by friction in the movement process while ensuring good electrical contact with the shell 1.
The utility model provides an insulating support piece 2, stabilizer blade 21 and middle takeover 23 are by the integrative injection moulding of epoxy, and the internal stress that produces at the in-process of moulding plastics can be released to the centre bore 24 at insulating support piece 2 middle part. The fixed insulating support is formed by arranging the fixed insert 22 in the leg 21 of the insulating support 2, and the sliding insulating support is formed by arranging the sliding grounding insert 26 and the two pulley inserts 27 in the leg 21 of the insulating support 2. Compare basin insulation system or single-column type insulation system, insulating support piece 2 is taken over 23 and is worn to establish conducting rod 3 in the middle of prefabricating when moulding plastics between stabilizer blade 21 position, can make insulating support piece 2's cross-section littleer to adapt to the transmission line casing 1 that the external diameter is littleer, the assembly of being convenient for is more stable to the product structure, and the cost is lower, is convenient for use in complicated operating mode, shaft, inclined shaft.
The utility model discloses standard cell length can support 18 m's conductor in a flexible way the most, and standard cell comprises a fixed insulating support piece and two slip insulating support pieces, and every insulating support piece can support 6 m's conductor the most to the accessible is adjusted slip insulating support piece and is changed standard cell's length. The particle catcher 6 is arranged on the fixed insulating support piece and the sliding insulating support piece in a matched mode, the bottom of the particle catcher 6 can be provided with a through hole or a long hole corresponding to the insulating support piece 2, metal particles can be collected by utilizing the Faraday cage principle and are used for catching particles which can cause discharge near the insulating support piece 2, an insulating surface is protected, the probability of surface discharge is reduced, and the insulating reliability of the ultra-high voltage GIL is improved.
The fixed insulating support, the sliding insulating support and the conductive rod 3 may be integrally assembled and then loaded into the case 1 to be filled with SF6、N2And SF6The process is simplified because the mixed gas and other insulating gases are sealed, and the insulating support member 2 integrally molded by epoxy resin is lighter, thereby avoiding the support legs 21 and the intermediate pipe 23 from being formed by metal, and facilitating transportation and assembly.
The top parts of the fixed inserts 22 in the three support legs 21 on the fixed insulating support are respectively fixed with a fixed plate 5 through bolts, and the top side of the fixed plate 5 is fixed with the inner wall of the shell 1, so that the fixed insulating support is fixed in the shell 1 and is in contact with the shell 1 through the fixed plate 5 at the top part to realize grounding.
The sliding insulating support is grounded by the contact of the grounding contact 30 at the top with the shell 1, and the spring at the bottom of the grounding contact 30 is communicated with the supporting seat 28 formed by metal, so that the grounding contact 30, the spring, the shell 1, the particle catcher 6 and four parts form an electrically communicated equivalent potential, and the good grounding of the particle catcher 6 is ensured. The bottom of the sliding insulating support is adjusted in the position in the shell 1 through two pulley inserts 27, so that the sliding insulating support can adjust the length of the standard unit and move along with the expansion and contraction of the conducting rod 3, the moving resistance is reduced, the error of the installation process can be effectively compensated, and the thermal expansion or mechanical strain compensation is provided in the GIL operation process.
As shown in fig. 8, the intermediate connecting tube 23 is in interference fit with the conductive rod 3 by inserting a wedge 32. When the middle connecting pipe 23 is injection-molded, thin walls are formed at two ends, the conducting rod 3 penetrates through the middle connecting pipe 23 to a required position, then wedges 32 are inserted into two sides of the middle connecting pipe 23 through special tooling, and two side edges of the middle connecting pipe 23 are flanged inwards, so that the middle connecting pipe 23 and the conducting rod 3 are tightly connected together, and the conducting rod 3 and the insulating support member 2 are tightly connected into a whole. Compared with a welding and bolt connecting mode, the risk of generating metal chips due to friction of welding slag and bolt holes is reduced.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a GIL is with integration three-phase storehouse insulator altogether and transmission line thereof, includes the slip insulating support piece and the fixed insulating support piece that set up at the internal interval of confined transmission line casing, all is provided with particle trapper, its characterized in that between slip insulating support piece and fixed insulating support piece and the casing: the fixed insulating support piece comprises an insulating support piece and a fixed insert, the insulating support piece is plate-shaped, cylindrical support legs which are distributed in a triangular shape are circumferentially arranged on the insulating support piece, a middle connecting pipe penetrates through the insulating support piece between every two adjacent support legs, a central hole is formed in the middle of the insulating support piece, the support legs and the middle connecting pipe are integrally formed by injection molding of epoxy resin, the fixed insert is arranged in each support leg of the insulating support piece, the fixed insert comprises a supporting seat which is embedded in the support leg and a fixed plate which is fixedly arranged on the supporting seat through a fixing piece, the top side of each fixed plate is fixed to the inner wall of the shell, and the particle catcher is fixed between the supporting seat and the fixed plate;
slip insulating support piece includes insulating support piece, slip ground connection inserts and pulley inserts, the slip ground connection inserts all sets up in insulating support piece's top stabilizer blade, and the slip ground connection inserts includes the supporting seat of nestification in the stabilizer blade, and the supporting seat internal fixation is provided with and is used for inserting fixed cover and the supporting seat top of establishing ground contact utmost point and is fixed mutually with the particle trapper, and ground contact utmost point bottom and supporting seat between be provided with the spring, the pulley inserts includes the supporting seat of nestification in the stabilizer blade, and the supporting seat internal fixation is provided with the fixed cover that has the runner, and the particle trapper is all worn out at the top of each fixed cover, and the conductive rod is worn to be equipped with jointly in the middle of the coaxial takeover on slip insulating support piece and the fixed insulating support piece.
2. The integrated three-phase common-bin insulator for the GIL and the power transmission line thereof according to claim 1, wherein: the stabilizer blade is cylindric, and the bottom of stabilizer blade is to insulating support piece shrink, and the junction of stabilizer blade bottom and insulating support piece to and all have the circular arc transition between stabilizer blade and the middle takeover.
3. The integrated three-phase common-bin insulator for the GIL and the power transmission line thereof according to claim 1, wherein: the insulating support piece is annularly wrapped with a cylindrical conductor wrapping part outside the middle connecting pipe, and the outer surface of the conductor wrapping part is provided with arc transition.
4. The integrated three-phase common-bin insulator for the GIL and the power transmission line thereof according to claim 1, wherein: and the middle connecting pipe and the conducting rod are in interference fit through an inserted wedge.
5. The integrated three-phase common-bin insulator for the GIL and the power transmission line thereof according to claim 1, wherein: the fixing sleeve is made of organic materials.
6. The integrated three-phase common-bin insulator for the GIL and the power transmission line thereof according to claim 1, wherein: the ground contact is composed of graphite or a graphite alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022983049.7U CN214755405U (en) | 2020-12-09 | 2020-12-09 | Integrated three-phase common-bin insulator for GIL and power transmission line thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022983049.7U CN214755405U (en) | 2020-12-09 | 2020-12-09 | Integrated three-phase common-bin insulator for GIL and power transmission line thereof |
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| CN214755405U true CN214755405U (en) | 2021-11-16 |
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| CN202022983049.7U Active CN214755405U (en) | 2020-12-09 | 2020-12-09 | Integrated three-phase common-bin insulator for GIL and power transmission line thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400600A (en) * | 2021-12-16 | 2022-04-26 | 河南平高电气股份有限公司 | Three-phase common-box bus conductor supporting device |
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2020
- 2020-12-09 CN CN202022983049.7U patent/CN214755405U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400600A (en) * | 2021-12-16 | 2022-04-26 | 河南平高电气股份有限公司 | Three-phase common-box bus conductor supporting device |
| CN114400600B (en) * | 2021-12-16 | 2023-11-17 | 河南平高电气股份有限公司 | Three-phase common-box bus conductor supporting device |
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