CN109904730A - Contact box for switch cabinet - Google Patents
Contact box for switch cabinet Download PDFInfo
- Publication number
- CN109904730A CN109904730A CN201711291748.1A CN201711291748A CN109904730A CN 109904730 A CN109904730 A CN 109904730A CN 201711291748 A CN201711291748 A CN 201711291748A CN 109904730 A CN109904730 A CN 109904730A
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- China
- Prior art keywords
- tubular insulator
- slot
- contact box
- layer
- static contact
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A kind of contact box for switch cabinet, including the closed tubular insulator of the other end open at one end, the lower part of tubular insulator are pedestal connecting port, one are radially provided on the ring wall of top for receiving the through slot of busbar, through slot is communicated with inner cavity.The top of the inner cavity is equipped with static contact and installs inserts, it is characterized in that: being equipped with one layer of silicon rubber loop on the pedestal connecting port；A nonmagnetic metal cylindrical shield layer is equipped on the inner wall of tubular insulation intracoelomic cavity below the through slot, nonmagnetic metal cylindrical shield layer is connected with each other with static contact installation inserts through conducting wire.This product, which eliminates, generates the phenomenon that continuing corona due to easily causing electric discharge between static contact and the inner wall of contact box there are the air gap in the prior art, increases radius of curvature, is distributed electric field energy along shielded layer, is conducive to uniform electric field.In addition, being also beneficial to eliminate the air gap between contact box and its connection seat, to eliminate gap discharge phenomenon after silicone rubber ring.
Description
[technical field]
The invention belongs to a kind of and matching used attachmentes of power equipment, particularly belong to a kind of and AMS-24 switchgear
With the contact box used.
[background technique]
Existing to match the contact box used with AMS-24 switchgear, structure includes one being formed by epoxy mixture and one end
Be open the closed tubular insulator of the other end, is equipped with static contact at the top of insulator inner wall and installs inserts, sets on inside and outside wall
There is skirt.A through slot is provided on the ring wall in portion on insulator, which makes busbar pass through through slot radial direction for receiving busbar
After protruding into insulation intracoelomic cavity, it is linked together through installation inserts with static contact.The contact box of this structure is deposited in practical applications
In following problems: electric field is uneven, between high voltage bus and tubular insulator inner wall because there are the air gaps, easily cause electric discharge and
It generating and continues corona, contact box works in such circumstances, and it will lead to insulation performance and decline rapidly, punch-through even occurs, and
Cause electric power accident.
[summary of the invention]
To overcome the above problem of the existing technology, the present invention is intended to provide a kind of switchgear contact of structure novel
Box, the contact box is due to being not likely to produce corona phenomenon in switchgear operational process, thus it is advantageously ensured that the insulation of contact box
Performance, the generation for avoiding punch-through and preventing electric power accident.
The technical solution to solve the above problems is as follows: this contact box for switch cabinet includes that the other end open at one end is closed
Tubular insulator, the lower part of tubular insulator are pedestal connecting port, are radially provided with a use on the top ring wall of tubular insulator
In the through slot for receiving busbar, through slot is communicated with the inner cavity of tubular insulator, and the top of the inner cavity is equipped with static contact and installs inserts,
It is characterized in that: being equipped with one layer of silicon rubber loop on the pedestal connecting port；Tubular insulation intracoelomic cavity ring below the through slot
Wall is equipped with a nonmagnetic metal cylindrical shield layer, and nonmagnetic metal cylindrical shield layer and static contact installation inserts are mutual through conducting wire
Connection.
Above-mentioned nonmagnetic metal cylindrical shield layer can be oven wire mesh blanket, be also possible to metal plate layer.
Above-mentioned oven wire mesh blanket or metal plate layer and tubular insulator are whole epoxy pressure gel molded part.
The utility model has the advantages that compared with prior art, one layer of nonmagnetic metal cylindrical shield layer is added on the inner wall of contact box,
And so that it is linked into an integrated entity with static contact installation inserts, eliminate in the prior art due between high voltage bus and contact box inner wall
The phenomenon that being also easy to produce lasting corona due to there are the air gap, increases radius of curvature, is distributed electric field energy along shielded layer, have
Conducive to uniform electric field.In addition, after one layer of silicon rubber loop is added in the periphery of pedestal connecting port, be conducive to eliminate contact box and usually
The air gap between plastics connection seat used, and avoid continuing the phenomenon that generating corona.Although structure of the invention improves letter
It is single, but played good effect really in practice, for AMS-24 switchgear, after tested as the result is shown: proof voltage
It is increased to 79KV from the 68KV of national standard, performance is more superior, eliminates gap discharge phenomenon, and partial discharge quantity is less than
3PC, well below national standard 10PC.
[Detailed description of the invention]
Fig. 1 is longitudinal schematic cross-sectional view of one embodiment of the invention.
In figure: silicon rubber loop 1, tubular insulator 2, outer skirt 3, inner skirt 4, busbar line outlet 5, through slot 51, static contact
Inserts 6, round metal tubular shielded layer 7 are installed.
[specific embodiment]
Referring to Fig. 1.By the molding tubular insulator 2 of epoxy pressure gel, inner skirt 4 and outer is respectively equipped in internal and external walls
Skirt 3.The pedestal connecting port periphery of 2 lower part of tubular insulator is arranged in silicon rubber loop 1, when pedestal connecting port is used to install and moulds
Material connection seat is connected.Metallic cylinder shielded layer 7 can be oven wire mesh blanket, be also possible to metal plate layer, and ring is located at busbar and goes out
On the inner wall of 5 side of line mouth, specifically when production, oven wire mesh blanket or metal plate layer and tubular insulator are integral cast part.Gold
Belong to cylindrical shield layer 7 to be made of the non magnetic magnetic material of aluminium, copper etc., it is connected between static contact installation inserts 6 with conducting wire
Wiring 8 is connected.
Claims (3)
1. a kind of contact box for switch cabinet, including the closed tubular insulator (2) of the other end open at one end, tubular insulator (2)
Lower part be pedestal connecting port, one is radially provided on the top ring wall of tubular insulator (2) for receiving the through slot of busbar
(51), through slot (51) is communicated with the inner cavity of tubular insulator (2), and the top of the inner cavity is equipped with static contact installation inserts (6),
It is characterized in: is equipped with one layer of silicon rubber loop (1) on the pedestal connecting port；In the tubular insulator below the through slot (51)
Chamber ring wall is equipped with a nonmagnetic metal cylindrical shield layer (7), and nonmagnetic metal cylindrical shield layer (7) and static contact install inserts
(6) it is connected with each other through conducting wire.
2. a kind of contact box for switch cabinet as described in claim 1, it is characterized in that: the nonmagnetic metal cylindrical shield layer
It (7) is oven wire mesh blanket or metal plate layer.
3. a kind of contact box for switch cabinet as claimed in claim 2, it is characterized in that: the oven wire mesh blanket or metal plate layer with
Tubular insulator (2) is whole epoxy pressure gel molded part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291748.1A CN109904730A (en) | 2017-12-08 | 2017-12-08 | Contact box for switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291748.1A CN109904730A (en) | 2017-12-08 | 2017-12-08 | Contact box for switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109904730A true CN109904730A (en) | 2019-06-18 |
Family
ID=66940092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711291748.1A Pending CN109904730A (en) | 2017-12-08 | 2017-12-08 | Contact box for switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109904730A (en) |
-
2017
- 2017-12-08 CN CN201711291748.1A patent/CN109904730A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190618 |