CN110690662A - Shielding structure for arc extinguish chamber of solid ring main unit - Google Patents
Shielding structure for arc extinguish chamber of solid ring main unit Download PDFInfo
- Publication number
- CN110690662A CN110690662A CN201810738755.XA CN201810738755A CN110690662A CN 110690662 A CN110690662 A CN 110690662A CN 201810738755 A CN201810738755 A CN 201810738755A CN 110690662 A CN110690662 A CN 110690662A
- Authority
- CN
- China
- Prior art keywords
- arc extinguish
- insulator
- extinguish chamber
- shielding
- mesh enclosure
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
-
- 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
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
Abstract
The invention discloses a shielding structure for an arc extinguish chamber of a solid ring main unit, which comprises a first insulator, a second insulator, a conductor and an arc extinguish chamber, wherein the arc extinguish chamber is embedded and fixed in the first insulator, the second insulator is coated outside the arc extinguish chamber, the conductor is arranged at the static end of the arc extinguish chamber, a first shielding mesh enclosure and a second shielding mesh enclosure are arranged in the first insulator, the static end of the arc extinguish chamber is positioned in the first shielding mesh enclosure, so that the first shielding mesh enclosure covers the static end of the arc extinguish chamber, the moving end of the arc extinguish chamber is positioned in the second shielding mesh enclosure, so that the second shielding mesh enclosure covers the moving end of the arc extinguish chamber, the first shielding mesh enclosure is connected with the static end and the conductor in an equipotential manner, and the second shielding mesh enclosure is connected with the moving end in an equipotential manner. By adopting the shielding structure for the arc extinguish chamber of the solid ring main unit, the safe operation of the solid ring main unit is ensured.
Description
Technical Field
The invention relates to a solid ring main unit, in particular to a shielding structure for an arc extinguish chamber of a 40.5kV solid ring main unit.
Background
In an electric power distribution system, a ring main unit is a very important component in the power distribution system. Solid ring main units are the trend in the future. The performance of the arc extinguish chamber indirectly influences the safe reliability of the operation of the ring main unit.
The development trend of the existing ring main unit is miniaturization and intellectualization. The arc extinguish chamber is a part for connecting each element in the ring main unit. With the development of electrical modernization, the ring main unit increasingly becomes a power supply unit and a terminal device of a ring network in departments such as urban industrial parks, residential districts, business centers, industrial and mining enterprises and the like, and is the best device for electric energy distribution, control and electrical protection. The existing arc extinguish chamber is not designed to be shielded, the discharge phenomenon can occur on the joint surface of the first insulator and the second insulator of the existing arc extinguish chamber, and the product breakdown is directly caused when the discharge phenomenon is serious.
Disclosure of Invention
In order to solve the above problems, the invention provides a shielding structure for an arc extinguish chamber of a solid ring main unit, which ensures the safe operation of the solid ring main unit.
In order to achieve the purpose, the shielding structure for the arc extinguish chamber of the solid ring main unit comprises a first insulator, a second insulator, a conductor and the arc extinguish chamber, wherein the arc extinguish chamber is embedded and fixed in the first insulator, the second insulator is coated outside the arc extinguish chamber, the conductor is arranged at the static end of the arc extinguish chamber, a first shielding mesh enclosure and a second shielding mesh enclosure are arranged in the first insulator, the static end of the arc extinguish chamber is located in the first shielding mesh enclosure, so that the first shielding mesh enclosure covers the static end of the arc extinguish chamber, the moving end of the arc extinguish chamber is located in the second shielding mesh enclosure, so that the second shielding mesh enclosure covers the moving end of the arc extinguish chamber, the first shielding mesh enclosure is in equipotential connection with the static end and the conductor, and the second shielding mesh enclosure is in equipotential connection with the moving end.
Preferably, an outer surface of the first insulator is grounded.
Preferably, the first and second shield meshes have a space between them and the second insulator.
By adopting the shielding structure for the arc extinguish chamber of the solid ring main unit, the discharge phenomenon between the combination surfaces of the second insulator and the first insulator can be effectively shielded, and the safe operation of the solid ring main unit is ensured.
Drawings
Fig. 1 is a cross-sectional view of a shielding structure for an arc extinguish chamber of a solid ring main unit according to the invention.
Detailed Description
Referring to fig. 1, the shielding structure for the arc extinguish chamber of the solid ring main unit comprises a first insulator 1, a second insulator 2, a conductor 6 and an arc extinguish chamber 3, the arc extinguish chamber 3 is embedded and fixed in the first insulator 1, the second insulator 2 is coated outside the arc extinguish chamber 3, the conductor 6 is arranged at the static end 5 of the arc extinguish chamber 3, a first shielding mesh enclosure 4 and a second shielding mesh enclosure 7 are arranged in the first insulator 1, the static end 5 of the arc extinguish chamber 3 is positioned in the first shielding mesh enclosure 4, so that the first shielding mesh enclosure 4 covers the static end 5 of the arc extinguish chamber 3, the moving end 8 of the arc extinguish chamber 3 is positioned in the second shielding mesh enclosure 7, so that the moving end 8 of the arc extinguish chamber 3 is covered by the second shielding mesh enclosure 7, the first shielding mesh enclosure 4 is connected with the static end 5 and the conductor 6 in an equipotential mode, and the second shielding mesh enclosure 7 is connected with the moving end 8 in an equipotential mode. The first shielding mesh enclosure 4 covers the static end 5 of the arc extinguish chamber 3, the part of the second insulator 2 located at the static end 5 of the arc extinguish chamber 3 is covered by the first shielding mesh enclosure 4, the second shielding mesh enclosure 7 covers the moving end 8 of the arc extinguish chamber 3, the part of the second insulator 2 located at the moving end 8 of the arc extinguish chamber 3 is covered by the second shielding mesh enclosure 7, and the discharging phenomenon between the junction surfaces of the second insulator 2 and the first insulator 1 can be shielded.
The first shielding mesh enclosure 4 and the second shielding mesh enclosure 7 are net-shaped structures made of metal.
The outer surface of the first insulator 1 is grounded.
The second insulator 2 is made of a different insulating material from the first insulator 1.
The first and second shield meshes 4 and 7 are spaced apart from the second insulator 2, i.e., are spaced apart.
As described above, exemplary embodiments of the present invention are described in detail with reference to the accompanying drawings. It should be understood that the invention is not intended to be limited to these specific details. Equivalent or similar changes in the structure and features of the exemplary embodiments may be made without departing from the spirit and scope of the invention, which shall also fall within the scope of the protection defined by the claims appended hereto.
Claims (3)
1. The utility model provides a shielding structure for solid looped netowrk cabinet explosion chamber, includes first insulator, second insulator, conductor and explosion chamber, the explosion chamber embedding is fixed in the first insulator, the cladding of second insulator is in outside the explosion chamber, the conductor sets up the quiet end of explosion chamber, a serial communication port, be equipped with first shielding screen panel and second shielding screen panel in the first insulator, the quiet end of explosion chamber is located make in the first shielding screen panel covers the quiet end of explosion chamber, the end of moving of explosion chamber is located make in the second shielding screen panel covers the end of moving of explosion chamber, first shielding screen panel with quiet end and conductor equipotential are connected, second shielding screen panel with move the end equipotential and connect.
2. The shielding structure for the arc extinguish chamber of the solid ring main unit as claimed in claim 1, wherein the outer surface of the first insulator is grounded.
3. The shielding structure for the arc extinguish chamber of the solid ring main unit as claimed in claim 1, wherein the first shielding net cover and the second shielding net cover are spaced from the second insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810738755.XA CN110690662A (en) | 2018-07-06 | 2018-07-06 | Shielding structure for arc extinguish chamber of solid ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810738755.XA CN110690662A (en) | 2018-07-06 | 2018-07-06 | Shielding structure for arc extinguish chamber of solid ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110690662A true CN110690662A (en) | 2020-01-14 |
Family
ID=69107041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810738755.XA Pending CN110690662A (en) | 2018-07-06 | 2018-07-06 | Shielding structure for arc extinguish chamber of solid ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110690662A (en) |
-
2018
- 2018-07-06 CN CN201810738755.XA patent/CN110690662A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |