CN220914751U - Insulating cylinder with grounded surface - Google Patents
Insulating cylinder with grounded surface Download PDFInfo
- Publication number
- CN220914751U CN220914751U CN202322667255.0U CN202322667255U CN220914751U CN 220914751 U CN220914751 U CN 220914751U CN 202322667255 U CN202322667255 U CN 202322667255U CN 220914751 U CN220914751 U CN 220914751U
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- Prior art keywords
- conductor
- outgoing
- incoming
- vacuum arc
- insulating body
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- 239000004020 conductor Substances 0.000 claims abstract description 49
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 238000000576 coating method Methods 0.000 claims abstract description 29
- 238000009413 insulation Methods 0.000 claims description 19
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 229910018503 SF6 Inorganic materials 0.000 description 5
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The utility model relates to the technical field of insulating cylinders, in particular to an insulating cylinder with a grounded surface, which comprises an insulating body, an incoming conductor, an outgoing conductor and a vacuum arc-extinguishing chamber; the insulating body is provided with a cavity for accommodating the grounding switch, the main switch and the isolating switch, the cavity is in an inverted ladder shape, the vacuum arc-extinguishing chamber is arranged at a gap corresponding to the ladder shape, and the incoming conductor, the cavity, the vacuum arc-extinguishing chamber and the outgoing conductor are connected in sequence; an outgoing line shielding cover is arranged in the insulating body corresponding to the connection part of the incoming line conductor and the chamber and the connection part of the vacuum arc extinguishing chamber and the chamber; the outer surface of the insulating body is provided with a grounding coating, and the incoming wire shielding cover and the outgoing wire shielding cover are respectively and electrically connected with the grounding coating; according to the utility model, the vacuum arc-extinguishing chamber is arranged at the corresponding gap of the step shape, so that the chamber and the vacuum arc-extinguishing chamber form a rectangular-like shape, the vacuum arc-extinguishing chamber is convenient to transport and install, the grounding coating is respectively connected with the incoming wire shielding cover and the outgoing wire shielding cover, and the grounding requirement can be met through surface grounding.
Description
Technical Field
The utility model relates to the technical field of insulating cylinders, in particular to an insulating cylinder with a grounded surface.
Background
The ring main unit is a group of electric equipment with power transmission and distribution equipment (high-voltage switch equipment) arranged in a metal or nonmetal insulating cabinet body or made into an assembled interval ring main power supply unit, and the core part of the ring main unit adopts a vacuum circuit breaker or adopts a composite switch and a fuse, so that the ring main unit has the advantages of improving the power supply parameters and performance, ensuring the power supply safety and the like. The ring main units can be divided into air insulation ring main units and SF6 gas (sulfur hexafluoride gas) insulation inflatable ring main units according to different insulation media, and epoxy resin insulation solid insulation ring main units are adopted. It is widely used in urban residential communities, high-rise buildings and large public buildings. And the power distribution station of the factory enterprise equal-load center and the box-type transformer substation.
In the medium-voltage ring main unit, the application of SF6 gas is quite extensive, and along with the enhancement of environmental protection consciousness of people, the large amount of SF6 gas is used, so that pollution and damage are inevitably brought to the environment on which people depend and the adverse effect is brought to the health of people. From the standpoint of environmental protection, electrical equipment with little or no SF6 gas should be one development of the high voltage electrical appliance manufacturing industry. The solid insulation ring main unit adopts an epoxy resin material as an insulator, and adopts a solid sealing pole technology to organically combine a vacuum arc extinguishing chamber, a main conductive loop, an insulation support and the like into a whole, and realize the functions of separating and combining load current or fault current, isolating load and the like through the movement of an operating mechanism, thereby realizing the control of a power supply and distribution system and the protection of equipment and personal safety. However, in the prior art, the integral electric field intensity of the insulating cylinder and the connecting end of the switch is high, the tip discharge is easy to generate, and the electrical performance requirement is not met; meanwhile, as the grounding requirement needs to be met, the grounding contact needs to be designed, so that the volume of the insulating cylinder is larger.
Disclosure of utility model
In order to overcome the defects in the prior art, the utility model aims to provide an insulating cylinder with smaller volume and surface grounding capable of reducing the possibility of tip discharge.
In order to solve the technical problems, the utility model adopts the following technical scheme:
An insulating cylinder with the surface grounded comprises an insulating body, an incoming conductor, an outgoing conductor and a vacuum arc extinguishing chamber, wherein the incoming conductor, the outgoing conductor and the vacuum arc extinguishing chamber are positioned in the insulating body;
The insulating body is provided with a cavity for accommodating the grounding switch, the main switch and the isolating switch, the cavity is in an inverted ladder shape, the vacuum arc-extinguishing chamber is arranged at a gap corresponding to the ladder shape, and the incoming conductor, the cavity, the vacuum arc-extinguishing chamber and the outgoing conductor are sequentially connected;
An incoming wire shielding cover is arranged in the insulating body corresponding to the connection position of the incoming wire conductor and the chamber, and an outgoing wire shielding cover is arranged in the insulating body corresponding to the connection position of the vacuum arc extinguishing chamber and the chamber;
the outer surface of the insulating body is provided with a grounding coating, and the incoming wire shielding cover and the outgoing wire shielding cover are respectively and electrically connected with the grounding coating.
Preferably, the vacuum arc extinguishing chamber is connected with the outgoing conductor through bolts and butterfly gaskets.
Preferably, an incoming wire shielding net is arranged on the periphery of the insulator body corresponding to the incoming wire conductor, and an outgoing wire shielding net is arranged on the periphery of the insulator body corresponding to the outgoing wire conductor.
Preferably, the incoming wire shielding net and the outgoing wire shielding net are respectively and electrically connected with the grounding coating.
Preferably, the incoming wire shielding cover and the outgoing wire shielding cover are respectively and electrically connected with the grounding coating through contacts.
Preferably, a plurality of mounting nuts are arranged on the insulating body corresponding to the cavity.
Preferably, the material of the insulating body is epoxy resin.
Preferably, the grounding coating is a conductive metal coating.
The utility model has the beneficial effects that: the vacuum arc-extinguishing chamber is arranged at the corresponding gap of the step shape, so that the chamber and the vacuum arc-extinguishing chamber form a rectangular-like shape, transportation and installation can be facilitated, meanwhile, the wire-inlet shielding cover is arranged in the insulating body corresponding to the connection position of the wire-inlet conductor and the chamber, the wire-outlet shielding cover is arranged in the insulating body corresponding to the connection position of the vacuum arc-extinguishing chamber and the chamber, and the grounding coating is respectively connected with the wire-inlet shielding cover and the wire-outlet shielding cover, so that the grounding requirement can be met directly through surface grounding without the design of a traditional grounding structure, and meanwhile, the outer surface of the whole switch loop is in low potential, dirt, wet and other severe environments can be resisted, and as the insulating cylinders with all surfaces grounded, the occurrence of inter-phase faults is avoided; and the incoming wire shielding cover and the outgoing wire shielding cover can increase the curvature of the electrode, reduce the electric field intensity, and simultaneously cover the tip of the conductive loop in the shielding net to avoid tip discharge.
Drawings
Fig. 1 is a schematic structural view and a cross-sectional view of a surface-grounded insulating cylinder according to a first embodiment of the present utility model;
fig. 2 is a schematic structural view and a cross-sectional view of an insulating cylinder with a grounded surface according to a second embodiment of the present utility model;
Fig. 3 is a schematic structural view and a cross-sectional view of a surface-grounded insulation barrel according to a third embodiment of the present utility model;
Description of the reference numerals: 1. an insulating body; 2. a wire inlet conductor; 3. an outgoing conductor; 4. a vacuum arc extinguishing chamber; 5. a chamber; 6. a wire inlet shielding case; 7. an outgoing line shielding cover; 8. a bolt; 9. a wire-incoming shielding net; 10. an outgoing line shielding net; 11. and (5) installing a nut.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 3, the surface-grounded insulation barrel of the present utility model includes an insulation body 1, and an incoming conductor 2, an outgoing conductor 3, and a vacuum arc extinguishing chamber 4 inside the insulation body 1;
The insulating body 1 is provided with a cavity 5 for accommodating the grounding switch, the main switch and the isolating switch, the cavity 5 is in an inverted ladder shape, the vacuum arc-extinguishing chamber 4 is arranged at a gap corresponding to the ladder shape, and the incoming conductor 2, the cavity 5, the vacuum arc-extinguishing chamber 4 and the outgoing conductor 3 are connected in sequence;
An incoming wire shielding cover 6 is arranged in the insulating body 1 corresponding to the connection position of the incoming wire conductor 2 and the cavity 5, and an outgoing wire shielding cover 7 is arranged in the insulating body 1 corresponding to the connection position of the vacuum arc extinguishing chamber 4 and the cavity 5;
The outer surface of the insulating body 1 is provided with a grounding coating, and the incoming wire shielding cover 6 and the outgoing wire shielding cover 7 are respectively and electrically connected with the grounding coating.
As can be seen from the above description, the vacuum arc-extinguishing chamber 4 is disposed at the gap corresponding to the step shape, so that the chamber 5 and the vacuum arc-extinguishing chamber 4 can form a rectangular-like shape, transportation and installation can be facilitated, meanwhile, the wire-incoming shielding cover 6 is disposed in the insulating body 1 corresponding to the connection position of the wire-incoming conductor 2 and the chamber 5, the wire-outgoing shielding cover 7 is disposed in the insulating body 1 corresponding to the connection position of the vacuum arc-extinguishing chamber 4 and the chamber 5, and the grounding coating is respectively connected with the wire-incoming shielding cover 6 and the wire-outgoing shielding cover 7, so that the grounding requirement can be met directly through surface grounding without the design of a traditional grounding structure, and meanwhile, the outer surface of the whole switch loop is in low potential, and can endure severe environments such as dirt, moisture and the like; and the incoming wire shielding cover 6 and the outgoing wire shielding cover 7 can increase the electrode curvature, reduce the electric field intensity, and simultaneously cover the tip of the conductive loop in the shielding net to avoid tip discharge.
Further, the vacuum arc extinguishing chamber 4 is connected with the outgoing conductor 3 through bolts 8 and butterfly gaskets.
As is apparent from the above description, the connection stability of the vacuum interrupter 4 and the outgoing conductor 3 can be ensured by the connection of the bolt 8 and the butterfly washer.
Further, an incoming wire shielding net 9 is arranged on the periphery of the insulating body 1 corresponding to the incoming wire conductor 2, and an outgoing wire shielding net 10 is arranged on the periphery of the insulating body 1 corresponding to the outgoing wire conductor 3.
As is apparent from the above description, by providing the incoming wire shielding net 9 and the outgoing wire shielding net 10, the electric field intensity can be reduced and the safety margin can be improved.
Further, the incoming wire shielding net 9 and the outgoing wire shielding net 10 are respectively electrically connected with the grounding coating.
From the above description, it is clear that by grounding, it is possible to conduct electricity directly into ground when breakdown occurs.
Further, the incoming wire shielding case 6 and the outgoing wire shielding case 7 are respectively and electrically connected with the grounding coating through contacts.
Further, a plurality of mounting nuts 11 are disposed on the insulating body 1 corresponding to the cavity 5.
Further, the material of the insulating body 1 is epoxy resin.
Further, the grounding coating is a conductive metal coating.
Example 1
An insulating cylinder with the surface grounded comprises an insulating body 1, an incoming conductor 2, an outgoing conductor 3 and a vacuum arc extinguishing chamber 4 which are positioned in the insulating body 1;
The insulating body 1 is provided with a cavity 5 for accommodating the grounding switch, the main switch and the isolating switch, the cavity 5 is in an inverted ladder shape, the vacuum arc-extinguishing chamber 4 is arranged at a gap corresponding to the ladder shape, and the incoming conductor 2, the cavity 5, the vacuum arc-extinguishing chamber 4 and the outgoing conductor 3 are connected in sequence; the incoming conductor 2 is bent leftwards;
An incoming wire shielding cover 6 is arranged in the insulating body 1 corresponding to the connection position of the incoming wire conductor 2 and the cavity 5, and an outgoing wire shielding cover 7 is arranged in the insulating body 1 corresponding to the connection position of the vacuum arc extinguishing chamber 4 and the cavity 5;
The outer surface of the insulating body 1 is provided with a grounding coating, and the incoming wire shielding cover 6 and the outgoing wire shielding cover 7 are respectively and electrically connected with the grounding coating.
The vacuum arc-extinguishing chamber 4 is connected with the outgoing conductor 3 through bolts 8 and butterfly gaskets.
An incoming wire shielding net 9 is arranged on the periphery of the insulating body 1 corresponding to the incoming wire conductor 2, and an outgoing wire shielding net 10 is arranged on the periphery of the insulating body 1 corresponding to the outgoing wire conductor 3.
The incoming wire shielding net 9 and the outgoing wire shielding net 10 are respectively and electrically connected with the grounding coating.
The incoming wire shielding cover 6 and the outgoing wire shielding cover 7 are respectively and electrically connected with the grounding coating through contacts.
A plurality of mounting nuts 11 are arranged on the insulating body 1 corresponding to the cavity 5.
The material of the insulating body 1 is epoxy resin.
The grounding coating is a conductive metal coating.
Example two
An insulating cylinder with the surface grounded is the same as the first embodiment and will not be described again; wherein the incoming conductor 2 is arranged vertically.
Example III
An insulating cylinder with the surface grounded is the same as the first embodiment and will not be described again; wherein the incoming conductor 2 is bent rightward.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (8)
1. The surface-grounded insulating cylinder is characterized by comprising an insulating body, an incoming conductor, an outgoing conductor and a vacuum arc extinguishing chamber, wherein the incoming conductor, the outgoing conductor and the vacuum arc extinguishing chamber are positioned in the insulating body;
The insulating body is provided with a cavity for accommodating the grounding switch, the main switch and the isolating switch, the cavity is in an inverted ladder shape, the vacuum arc-extinguishing chamber is arranged at a gap corresponding to the ladder shape, and the incoming conductor, the cavity, the vacuum arc-extinguishing chamber and the outgoing conductor are sequentially connected;
An incoming wire shielding cover is arranged in the insulating body corresponding to the connection position of the incoming wire conductor and the chamber, and an outgoing wire shielding cover is arranged in the insulating body corresponding to the connection position of the vacuum arc extinguishing chamber and the chamber;
the outer surface of the insulating body is provided with a grounding coating, and the incoming wire shielding cover and the outgoing wire shielding cover are respectively and electrically connected with the grounding coating.
2. The surface-grounded insulating cylinder of claim 1, wherein the vacuum interrupter is connected to the outgoing conductor by bolts and butterfly washers.
3. The surface-grounded insulation cylinder according to claim 1, wherein an incoming wire shielding net is arranged on the outer periphery of the insulation body corresponding to the incoming wire conductor, and an outgoing wire shielding net is arranged on the outer periphery of the insulation body corresponding to the outgoing wire conductor.
4. A surface-grounded insulation cylinder according to claim 3, wherein the incoming wire shielding mesh and the outgoing wire shielding mesh are electrically connected to the ground coating, respectively.
5. The surface-grounded insulation can of claim 1, wherein the incoming wire shield and the outgoing wire shield are electrically connected to the ground coating by contacts, respectively.
6. The surface-grounded insulation cylinder according to claim 1, wherein a plurality of mounting nuts are provided on the insulation body corresponding to the chambers.
7. The surface-grounded insulating cylinder according to claim 1, wherein the insulating body is made of epoxy resin.
8. The surface-grounded insulation cylinder of claim 1, wherein the grounding coating is a conductive metal coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322667255.0U CN220914751U (en) | 2023-10-07 | 2023-10-07 | Insulating cylinder with grounded surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322667255.0U CN220914751U (en) | 2023-10-07 | 2023-10-07 | Insulating cylinder with grounded surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220914751U true CN220914751U (en) | 2024-05-07 |
Family
ID=90914754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322667255.0U Active CN220914751U (en) | 2023-10-07 | 2023-10-07 | Insulating cylinder with grounded surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220914751U (en) |
-
2023
- 2023-10-07 CN CN202322667255.0U patent/CN220914751U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |