CN2802668Y - Metallic oxide lightning protector - Google Patents
Metallic oxide lightning protector Download PDFInfo
- Publication number
- CN2802668Y CN2802668Y CN 200520078898 CN200520078898U CN2802668Y CN 2802668 Y CN2802668 Y CN 2802668Y CN 200520078898 CN200520078898 CN 200520078898 CN 200520078898 U CN200520078898 U CN 200520078898U CN 2802668 Y CN2802668 Y CN 2802668Y
- Authority
- CN
- China
- Prior art keywords
- metal oxide
- insulating
- arrester
- pressure release
- insulating cylinder
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Thermistors And Varistors (AREA)
Abstract
The utility model relates to the technical field of electric transmission and transformation protecting devices, particularly a metal oxide lightening arrester which aims to overcome the problems of large volume, heavy weight and unstable explosion-proof performance of the lightening arrester with a ceramic outer sleeve, and the problems of low mechanical strength and low pressure releasing performance of the lightening arrester with a composite outer sleeve. For overcoming the problems in the prior art, the utility model has the solving proposal that the metal oxide lightening arrester comprises a plurality of sections of arrester units which comprise an insulating sleeve and a flange. The utility model is characterized in that the insulating sleeve is provided with two layers, an inner layer is an insulating cylinder made of non-ceramic insulating material, and an outer layer is an umbrella sleeve made of silicon rubber composite material, wherein the insulating cylinder is provided with a pressure releasing opening which is assembled with a sealing component and the flange and the insulating cylinder are connected by a cement.
Description
Affiliated technical field:
The utility model relates to power transmission and transformation protection equipment technical field, is specifically related to a kind of metal oxide arrester.
Background technology:
At present, what 500kV system electricity consumption site type metal oxide arrester mainly adopted both at home and abroad is the porcelain bushing type lightning arrester, the overall structure of porcelain bushing type lightning arrester is generally three joint series connection rising structures, and the inner core body structure is an open side type, and every joint lightning arrester unit comprises overcoat and core body etc.Described overcoat is the porcelain overcoat, is made up of insulator and flange, and the insulator material is a ceramic material.
Power station type polymeric metal oxide surge arrester only is used for the power station of 220kV and following grade, more the power station type polymeric metal oxide surge arrester of voltage levels is difficult to realize mainly due to mechanical performance, pressure release performance, goes back product-free at present and moves in the power station.
The problem that prior art is existed describes respectively below:
1) problem of porcelain coat lightning arrester existence is: a) volume is big, and weight is big; B) explosion-proof performance instability, the back harmfulness that lost efficacy is big: when the lightning arrester internal short-circuit, the internal gas pressure sudden change, powerful pressure was difficult to emit in moment, and the very easy porcelain wall that causes bursts, and inner core body part is ejected, the damage miscellaneous equipment, and accident is enlarged.
2) problem of polymeric metal oxide surge arrester existence: a) employing is threaded between the gold utensil of composite sheath and the insulating cylinder, and the mechanical strength of composite sheath is restricted, and can't be used for the lightning arrester of voltage levels; B) lightning arrester of voltage levels requires height to the pressure release performance, and prior art can't realize.
Summary of the invention:
The volume that the utility model will overcome the porcelain coat lightning arrester is big, weight is big, explosion-proof performance is unstable and the polymeric housed metal oxide arrester mechanical strength is little, the problem that the pressure release performance is low.
For overcoming the problem that prior art exists, solution of the present utility model is: a kind of metal oxide arrester, comprise number joint lightning arrester unit, comprise insulating case and flange 1 on the lightning arrester unit, its special character is: described insulating case is two-layer, and internal layer is the insulating cylinder 5 of non-porcelain insulating material, and skin is the umbrella cover 2 of silicon rubber composite material, insulating cylinder 5 is provided with pressure release orifice 3, is equipped with seal 4 on pressure release orifice 3; Be connected with mucilage binding between described flange 1 and the insulating cylinder 5.
Above-mentioned pressure release orifice 3 is the outwards little horn mouth of imperial palace of footpath.The pressure release performance is better.
Above-mentioned pressure release orifice 3 is a groove shape mouth, and above-mentioned seal 4 is assemblied on the liberation port 3.Guaranteed the sealing property of lightning arrester.
Above-mentioned pressure release orifice 3 comprises two groups that are arranged on two sagittal planes, and every group is uniform four.When internal short-circuit, easilier inner moment is produced very high air pressure discharge, the pressure release performance is better.
Compared with prior art, the utility model has the advantages that:
1, volume is little, and is in light weight: adopt the insulating cylinder of non-porcelain insulating material and the silicon rubber composite material umbrella cover overcoat as lightning arrester, volume reduces, and weight saving is than the easier assembling of porcelain coat lightning arrester, transportation and installation;
2, explosion-proof performance is good: the material advantage that makes full use of composite sheath, carrying out pressure with the way of opening on the coat discharges, when breaking down, sealing strip in the overcoat on the insulating cylinder is washed open under the air pressure inside effect, discharge the very high pressure that inner moment produces rapidly, overcoat just can not burst by pressurized like this, and inner core body part can not take place to spray and the damage miscellaneous equipment, and accident is enlarged.Experiment shows that big electric current pressure releasability of the present utility model reaches 63kA, and this numerical value is the highest ranking of domestic test capability, little electric current pressure releasability 800A;
3, mechanical strength is good: adopt between conventional polymeric housed metal oxide arrester insulating cylinder and the upper and lower gold utensil to be threaded, cutting thread is wanted in the insulating cylinder termination, has destroyed the intensity of insulating cylinder.In the utility model, adopt mucilage binding to connect between insulating cylinder and the flange, guaranteed the lightning arrester overall mechanical strength, its bending strength is up to 25.3kNm;
4, good seal performance: owing to be equipped with seal on insulating cylinder side pressure liberation port, both guaranteed the manufacturability of product, the more important thing is the sealing property that has guaranteed lightning arrester, test shows that the sealing leak rate of lightning arrester is less than 6.65 * 10
-8Pa.L/s, than the sealing leak rate of GB 11032-2000 " interchange gapless metal-oxide lighting arrester " national Specification less than 6.65 * 10
-5Pa.L/s is low three orders of magnitude;
5, the scope of application is wide: the utility model is applicable to 500kV power station type polymeric metal oxide surge arrester, also can be used for the architecture advances of other performance metal oxide arrester with a high standard.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
Embodiment:
Referring to accompanying drawing, the utility model comprises number joint lightning arrester unit, and every joint lightning arrester comprises overcoat and flange 1 on the unit.Said overcoat is two-layer, internal layer is the insulating cylinder 5 of non-porcelain insulating material, skin is the umbrella cover 2 of silicon rubber composite material, insulating cylinder 5 is provided with pressure release orifice 3, and on pressure release orifice 3, be equipped with seal 4, said pressure release orifice 3 is a groove shape mouth, and groove shape mouth is provided with vertically, and said groove shape bore is to being the little horn mouth of outer imperial palace.Said pressure release orifice 3 comprises two groups that are arranged on two sagittal planes, and every group is uniform four.Be connected with mucilage binding between said flange 1 and the insulating cylinder 5.
Claims (4)
1, a kind of metal oxide arrester, comprise number joint lightning arrester unit, comprise insulating case and flange (1) on the lightning arrester unit, it is characterized in that: described insulating case is two-layer, internal layer is the insulating cylinder (5) of non-porcelain insulating material, skin is the umbrella cover (2) of silicon rubber composite material, and insulating cylinder (5) is provided with pressure release orifice (3), is equipped with seal (4) on pressure release orifice (3); Be connected with mucilage binding between described flange (1) and the insulating cylinder (5).
2, a kind of metal oxide arrester as claimed in claim 1 is characterized in that: described pressure release orifice (3) is the outside little horn mouth of imperial palace in footpath.
3, a kind of metal oxide arrester as claimed in claim 1 or 2 is characterized in that: described pressure release orifice (3) is a groove shape mouth, and above-mentioned seal (4) is assemblied on the liberation port (3).
4, a kind of metal oxide arrester as claimed in claim 3 is characterized in that: described pressure release orifice (3) comprises two groups that are arranged on two sagittal planes, and every group is uniform four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078898 CN2802668Y (en) | 2005-06-09 | 2005-06-09 | Metallic oxide lightning protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078898 CN2802668Y (en) | 2005-06-09 | 2005-06-09 | Metallic oxide lightning protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2802668Y true CN2802668Y (en) | 2006-08-02 |
Family
ID=36847373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520078898 Expired - Lifetime CN2802668Y (en) | 2005-06-09 | 2005-06-09 | Metallic oxide lightning protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2802668Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661820B (en) * | 2009-09-11 | 2011-07-06 | 大连法伏安电器有限公司 | Pressure relief device of solid polymeric housed metal oxide arrester |
-
2005
- 2005-06-09 CN CN 200520078898 patent/CN2802668Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661820B (en) * | 2009-09-11 | 2011-07-06 | 大连法伏安电器有限公司 | Pressure relief device of solid polymeric housed metal oxide arrester |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201336195Y (en) | High-voltage power cable sheath protector | |
| CN100490026C (en) | Metal oxide lightning arrester | |
| CN111091941A (en) | Pillar insulator type lightning arrester for integral electrified railway | |
| CN2796038Y (en) | Pillar type serial gap metal oxide lightning arrester | |
| CN2790001Y (en) | Connecting-disconnecting indoor and outdoor terminal for high voltage electric cable | |
| CN2802668Y (en) | Metallic oxide lightning protector | |
| CN207459667U (en) | A kind of anticreep stealing shield of low pressure street code | |
| CN203966695U (en) | Low pressure compound needle type insulator | |
| CN203573757U (en) | Supporting assembly with lightning-protection function | |
| CN107404100A (en) | A kind of anticreep stealing shield of low pressure street code | |
| CN101127437A (en) | A combined coat lightning arrester | |
| CN2509759Y (en) | Birds droppings proofing strap | |
| CN2733537Y (en) | Composite housing isolator arrester | |
| CN205900144U (en) | Moisture -proof overhead insulated cable | |
| CN2397601Y (en) | Composite insulating lightning-protection fuse | |
| CN205265138U (en) | Solid insulation looped netowrk cabinet is with shielding plug -in fuse | |
| CN203289052U (en) | External column-type voltage limiter for overhead line insulated conductor | |
| CN2521720Y (en) | Organic composite insulator | |
| CN204614469U (en) | A kind of fire resistant flexible high-temperature insulation cable | |
| CN2168914Y (en) | Insulated glass fibre reinforced plastic crossbar | |
| CN209087466U (en) | Fixed more air gap lightning protection wire breakage preventing devices | |
| CN209119753U (en) | High-voltage wall bushing applied to switchgear | |
| CN203242371U (en) | High-voltage bus for distribution transformer table | |
| CN209929042U (en) | Waterproof and anti-corrosion medium-voltage power cable | |
| CN216084461U (en) | 10KV side cabinet combining side-expanding inner taper sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090520 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |