CN209358198U - A kind of miniaturization switchgear wall bushing - Google Patents
A kind of miniaturization switchgear wall bushing Download PDFInfo
- Publication number
- CN209358198U CN209358198U CN201920168246.8U CN201920168246U CN209358198U CN 209358198 U CN209358198 U CN 209358198U CN 201920168246 U CN201920168246 U CN 201920168246U CN 209358198 U CN209358198 U CN 209358198U
- Authority
- CN
- China
- Prior art keywords
- wall bushing
- busbar
- switchgear
- low pressure
- wall
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of miniaturization switchgear wall bushings, it is characterized in that, wall bushing ontology including being equipped with busbar, the two is integral type integrated cast structure, wall bushing ontology outer is equipped with casing cluster parachute, inside is embedded with low pressure gauze screen, and mounting bracket is crossed inside fixing seat by low pressure shielding Netcom.Integral type integrated cast structure, no air-shed insulation, shelf depreciation is generated so as to avoid because junction there are problems that uneven the air gap, and production, mounting process are conveniently, reduce the volume of switchgear wall bushing, material cost is reduced, reduces the overall dimensions of wall bushing between the wall bushing and busbar without air-shed Insulation Coordination structure, have the characteristics that good insulation preformance, easy for installation.
Description
Technical field
The utility model relates between a kind of medium voltage air insulated switchgear cabinet more particularly to a kind of wall bushing and busbar
Insulation Coordination structure.
Background technique
Switchgear is also known as metal enclosed switchgear, it is the electrical equipment based on breaker, by related control electricity
Device, protection electric appliance, measurement electric appliance and bus, current-carrying conductor, insulator etc. are assemblied in closed metal cabinet, main work
With being to receive and distribute electric energy, quality is directly related to the stability and reliability of electric energy supply.
Find insulation fault, main cause easily occur at switch cabinet bus wall bushing in substation operation and maintenance
It is easy to happen insulation ag(e)ing for insulating materials at this, causes insulating capacity insufficient, bus is will lead to when serious and metal cabinet is sent out
Raw electric discharge phenomena influence system normal operation.In existing air insulation switchgear design, the switchgear multiselect of 12kV is with commonly
Wall bushing, wall bushing of the switchgear multiselect with shading ring of 35kV.
In the design process of switchgear, often because between common wall bushing and busbar air insulation distance not enough, it is through walls
It is too small that casing wears round internal diameter, forms narrow the air gap, so as to cause shelf depreciation, so that insulation occur old for wall bushing
Change, it is accumulative to make its breakdown to a certain extent, discharge accident occurs.During the installation process, busbar is not in casing bucket
Heart position also easily forms uneven air field distribution.Existed using modes such as radius of corner, the wall bushing internal diameters for increasing busbar
The field distribution of the air gap between bus and wall bushing can be improved to a certain extent, but do not solve shelf depreciation fundamentally
Exceeded problem.
It is one of the direction that the prior art is used to improve the air gap shelf depreciation using shading ring is added.Band shields through walls
Casing can make field distribution uniform due to taking shielding measure, to reduce the probability that insulation fault occurs for wall bushing.
The thickness that the inside that high-low pressure potential screen ring is poured into wall bushing will increase to wall bushing leads to the epoxy resin of casting
Unevenly.Height potential screen is higher to positioning accuracy request in process of production, increases the difficulty of manufacture.In project installation
In the process, band shading ring wall bushing installation quality is more demanding, because shielding line connect the case lack of standardization for generating electric discharge with busbar
Example is not obvious.
Summary of the invention
The technical problem to be solved by the utility model is to the air gap is unevenly easy between common wall bushing and busbar
There is the phenomenon that shelf depreciation；With high-low pressure gauze screen wall bushing difficulty of processing, big, shielding line and busbar connect lack of standardization make
At partial discharge phenomenon.
To solve the above-mentioned problems, the technical solution of the utility model is as follows:
A kind of miniaturization switchgear wall bushing, which is characterized in that the wall bushing ontology including being equipped with busbar, the two
For integral type integrated cast structure, wall bushing ontology outer is equipped with casing cluster parachute, and inside is embedded with low pressure gauze screen, and low pressure shields Netcom
Mounting bracket is crossed inside fixing seat.Wall bushing ontology is epoxy casting insulator, is made of epoxy mixture, middle part is set
There is a radially fixed pedestal, is surrounded by casing mounting hole.When installation, the embedded round nut in mounting hole can fitted bolt general
Wall bushing is fixed on switchgear mounting plate.Wall bushing ontology outer be equipped with casing cluster parachute, with increase low potential conductor with
Creepage distance between high potential conductor.Be embedded with low pressure gauze screen inside wall bushing, low pressure shielding Netcom cross mounting bracket with
Round nut connection is embedded in mounting hole, the relative position between low pressure gauze screen and wall bushing ontology can pass through mounting bracket
It is controlled.Wall bushing and busbar integral type are poured, between insulate without air-shed, thus eliminate because junction exist it is uneven
The air gap leads to the problem of shelf depreciation；And reduce the radius of wall bushing ontology.
Preferably, the fixing seat is equipped with mounting hole, and mounting bracket is equipped with the supporting leg extended around, supporting leg and peace
It fills hole to correspond, the two is installed inserts by wall bushing and is fixedly connected.
Preferably, the section of the wall bushing ontology is ellipse.
Preferably, the busbar section is rectangle, is handled at rectangular edges without fillet, sectional dimension can be according to engineering need
It is selected.
Low pressure shielding network optimization selects the higher material of the hardness such as aluminium alloy to be made, it is ensured that in wall bushing ontology casting process
The mixture of epoxy resins that will not be flowed generates impact and deforms, and to avoid low pressure from shielding network edge corner discharge, edge is adopted
It is handled with crimping circular arc.
The utility model provides a kind of novel wall bushing and busbar insulating structure, the switchgear wall bushing and mother
Arrange integral type casting, between without air-shed insulate, generate part so as to avoid because junction is there are uneven the air gap
The problem of electric discharge, has the characteristics that good insulation preformance, easy for installation, and reduces the volume of switchgear wall bushing, reduces
Material cost.Compared with prior art, the utility model has the beneficial effects that:
Compared with prior art, the utility model has the beneficial effects that:
1, insulation performance is improved, switchgear design difficulty is reduced: being used between switchgear wall bushing and busbar without air
Domain Insulation Coordination structure.This configuration avoids arrange the air insulation between hole and busbar to cause apart from deficiency in design process
Partial discharge phenomenon；The uneven the air gap easily formed in switchgear wall bushing and busbar installation process is avoided, is improved
Insulation performance between switchgear wall bushing and busbar.Simultaneously in switchgear design process, without considering wall bushing
The safe distance of the air gap between busbar.
2, reduce the volume of wall bushing: wall bushing and busbar pouring integrated structure deposit wall bushing and busbar not
In the air gap, reduce the radius of wall bushing, reduce the volume of wall bushing, reduces the dosage of epoxy resin.
3, reduce manufacture difficulty: without high-tension shielding ring in the application, low pressure shielding Netcom crosses mounting bracket accurate positionin, keeps away
Exempt to avoid band height potential screen ring during the installation process with difficult problem is positioned in height potential screen ring manufacturing process
Shielding line and busbar Rig up error caused by partial discharge phenomenon.
Detailed description of the invention
Fig. 1 is the cross-sectional view for the miniaturization switchgear wall bushing that embodiment provides；
Fig. 2 is the left view for the miniaturization switchgear wall bushing that embodiment provides；
Fig. 3 is the structural schematic diagram that wall bushing installs inserts and low pressure gauze screen mounting bracket.
Specific embodiment
To be clearer and more comprehensible the utility model, hereby with preferred embodiment, and attached drawing is cooperated to be described in detail below.
Embodiment
As shown in Figure 1-3, being a kind of miniaturization switchgear wall bushing provided by the utility model comprising a kind of small-sized
Switching cabinet wall bushing, which is characterized in that the wall bushing ontology 1 including being equipped with busbar 5, the two are integral type casting knot
Structure, 1 outer of wall bushing ontology are equipped with casing cluster parachute 4, and inside is embedded with low pressure gauze screen 3, and low pressure gauze screen 3 passes through mounting bracket
8 are set to inside fixing seat 2.Fixing seat 2 is equipped with mounting hole 6, and mounting bracket 8 is equipped with the supporting leg that extends around, supporting leg with
Mounting hole 6 corresponds, and the two is installed inserts 7 by wall bushing and is fixedly connected.The section of wall bushing ontology 1 is ellipse
Shape.5 section of busbar is rectangle.When installation, wall bushing in mounting hole 6 installation inserts 7 can fitted bolt wall bushing is consolidated
It is scheduled on switchgear mounting plate.
Claims (4)
1. a kind of miniaturization switchgear wall bushing, which is characterized in that the wall bushing ontology (1) including being equipped with busbar (5),
The two is integral type integrated cast structure, and wall bushing ontology (1) outer is equipped with casing cluster parachute (4), and inside is embedded with low pressure gauze screen
(3), low pressure gauze screen (3) is set to fixing seat (2) inside by mounting bracket (8).
2. miniaturization switchgear wall bushing as described in claim 1, which is characterized in that the fixing seat (2) is equipped with peace
It fills hole (6), mounting bracket (8) is equipped with the supporting leg extended around, and supporting leg and mounting hole (6) correspond, and the two is by wearing
Wall sleeve installation inserts (7) is fixedly connected.
3. miniaturization switchgear wall bushing as described in claim 1, which is characterized in that the wall bushing ontology (1)
Section is ellipse.
4. miniaturization switchgear wall bushing as described in claim 1, which is characterized in that busbar (5) section is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920168246.8U CN209358198U (en) | 2019-01-30 | 2019-01-30 | A kind of miniaturization switchgear wall bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920168246.8U CN209358198U (en) | 2019-01-30 | 2019-01-30 | A kind of miniaturization switchgear wall bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209358198U true CN209358198U (en) | 2019-09-06 |
Family
ID=67803469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920168246.8U Active CN209358198U (en) | 2019-01-30 | 2019-01-30 | A kind of miniaturization switchgear wall bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209358198U (en) |
-
2019
- 2019-01-30 CN CN201920168246.8U patent/CN209358198U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204558232U (en) | Current transformer | |
| CN202333561U (en) | Contact box used in high-voltage switch cabinet | |
| CN209358198U (en) | A kind of miniaturization switchgear wall bushing | |
| CN201036092Y (en) | Shielding high-voltage insulating tube | |
| CN102801123B (en) | 20KV sleeve | |
| CN201629495U (en) | Wall-through shielded bushing of high-voltage switchgear cabinet | |
| CN204834220U (en) | Miniaturized pot -type metal oxide arrester of 110kV three -phase | |
| CN201060735Y (en) | Positive and negative 500kV DC current sensor | |
| WO2014003999A1 (en) | Corona-free cap assembly | |
| CN203444967U (en) | Three-phase four-wire split-assembling epoxy resin poured dry voltage transformer | |
| CN214228770U (en) | Plugging type contact box for 40.5kV high-voltage switch cabinet | |
| CN201149960Y (en) | New type through-wall sleeve | |
| CN203747333U (en) | Improved high-voltage wall bushing | |
| CN207265590U (en) | Wall bushing and the switchgear using the wall bushing | |
| CN207052387U (en) | A kind of distribution line overvoltage protection | |
| CN110993297A (en) | Current transformer suitable for 10kV miniaturized switch cabinet | |
| CN203456779U (en) | A metering handcart suitable for a switch cabinet | |
| CN111354521A (en) | Pillar insulating part for solid cabinet | |
| KR101728354B1 (en) | Current transeformer | |
| CN207068610U (en) | Switch cubicle metering ground-type potential transformer | |
| CN105762006B (en) | A kind of great-current fixed sealed pole of gas-filling cabinet | |
| CN219123795U (en) | 12kV contact box suitable for working environment | |
| CN205159080U (en) | Outdoor voltage transformer subassembly of operatable type of fuse | |
| CN216119871U (en) | Pillar bus type current transformer with large creepage distance | |
| WO2018035756A1 (en) | Semi-closed dry type transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |