CN101465187B - Elbow-shaped inserting/pulling type metal-oxide lighting arrester - Google Patents
Elbow-shaped inserting/pulling type metal-oxide lighting arrester Download PDFInfo
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- CN101465187B CN101465187B CN2009100208013A CN200910020801A CN101465187B CN 101465187 B CN101465187 B CN 101465187B CN 2009100208013 A CN2009100208013 A CN 2009100208013A CN 200910020801 A CN200910020801 A CN 200910020801A CN 101465187 B CN101465187 B CN 101465187B
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- metal shell
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Abstract
The invention discloses an elbow-type plug-pull metal oxide arrester used for AC power system over-voltage protection, comprising an elbow-type metal shell; the elbow-type metal shell is connected with a flange; the other end of the metal shell is sequentially connected with an insulated locking ring, a pressure release device, a discharge counter or charged monitor terminal, a grounding terminal and a switching wire; the other end of an insulating medium platform body is connected with a plug-pull watchband-type contact; a solid insulating medium is arranged at the inner side of the metal shell; a core body is arranged at the inner side of the solid insulating medium; the middle part of the core body is connected with a zinc oxide resistance card; and electrical glue coatings are arranged between the outer side of the insulating medium and the inner side of the metal shell, and at the lower end of the platform body. The invention improves the surface potential distribution and enhances the insulation performance, and can be easily inserted into an electrical equipment mounting hole to keep gapless intimate contact; besides, the invention is provided with good volt-ampere characteristics, small geometric dimensions and close contact of electrodes, and can keep good conductive properties and increase the overall reliability. The invention is widely used for over-voltage protection of substations, GIS combined electrical appliances and other electrical equipment.
Description
Technical field
The present invention relates to a kind of overvoltage protection device lightning arrester that is used for electric power system, be specifically related to a kind of elbow-shaped inserting/pulling type metal-oxide lighting arrester that is used for electric power system electric equipment overvoltage protection.
Background technology
At present, high-tension electricity device industries such as switch, just the GIS combined electrical apparatus direction towards miniaturization develops, no matter traditional metal oxide arrester is porcelain bushing type or silicon rubber composite sheath formula, there is the surface potential height, cause personal injury, device security hidden danger easily, install and defective such as maintenance inconvenience, so its service condition and scope all are subjected to certain restriction.Chinese patent ZL01265825.1 discloses " tangible formula overvoltage protection device " and ZL200620046285.3 discloses " tangible formula metal oxide arrester "; the core body of above-mentioned two kinds of lightning arresters is connected to high-pressure side and low-pressure end; be provided with solid dielectric insulation between core body and the metal shell; which is provided with earth terminal; the dielectric front end is a connection-peg, though improved the defective on porcelain bushing type, the silicon rubber composite sheath formula.But these two kinds of lightning arresters still can not satisfy the best requirement of device miniaturization such as GIS combined electrical apparatus fully from structure, profile and physical dimension and some performance, lightning arrester still exists performance desirable not enough, because the restriction of its shape causes mounting means not very convenient, and very inconvenient user uses the monitoring to lightning arrester of discharge counter or live monitoring device, the zinc oxide valve plate contact of using in the core body is firm inadequately, causes defectives such as loose contact sometimes.
Summary of the invention
It is low or do not have a current potential to the purpose of this invention is to provide a kind of surface potential, the person is not had injury, guarantees equipment safety operation, it is convenient to install and overhaul, and thoroughly eliminates surperficial high potential, satisfies the elbow-shaped inserting/pulling type metal-oxide lighting arrester of the instructions for use of electric equipments such as GIS combined electrical apparatus.
In order to overcome the deficiencies in the prior art, technical scheme of the present invention is to solve like this: improvements of the present invention comprise an elbow type metal shell that has flange, expose the solid dielectric insulation stage body, the plug contact, the insulating pressure releasing device, discharge counter or live monitoring device terminal, the conversion lead, earth terminal, solid dielectric insulation, core body, electricity gel coating and insulation binding ring, the wherein said horizontal ends that has the elbow type metal shell of flange is connected with the described solid dielectric insulation stage body that exposes, the described vertical end that has the elbow type metal shell of flange connects the insulating pressure releasing device successively, discharge counter or live monitoring device terminal and conversion lead and earth terminal, the described solid dielectric insulation stage body top of exposing is made as the plug contact, the inboard of described elbow type metal shell is equipped with solid dielectric insulation, described solid dielectric insulation inboard is equipped with core body, be connected with zinc oxide resistance sheet in the middle of the described core body, all scribble electric gel coating with the lower end of exposing the solid dielectric insulation stage body between the inboard of the described solid dielectric insulation outside and elbow type metal shell, with described insulation binding ring described solid dielectric insulation is locked between described solid dielectric insulation bottom and the described pressure relief device upper end.
Description of drawings
Fig. 1 is the front view that partly cuts open of the present invention.
Embodiment
Accompanying drawing is embodiments of the invention.
Below in conjunction with accompanying drawing summary of the invention of the present invention is described further:
With reference to shown in Figure 1, a kind of elbow-shaped inserting/pulling type metal-oxide lighting arrester, comprise an elbow type metal shell 3 that has flange, expose solid dielectric insulation stage body 2, plug contact 1, insulating pressure releasing device 9, discharge counter or live monitoring device terminal 12, conversion lead 11, earth terminal 10, solid dielectric insulation 7, core body 5, electricity gel coating 4 and insulation binding ring 8, the wherein said horizontal ends that has the elbow type metal shell 3 of flange is connected with the described solid dielectric insulation stage body 2 that exposes, the described vertical end that has the elbow type metal shell 3 of flange connects insulating pressure releasing device 9 successively, discharge counter or live monitoring device terminal 12 and conversion lead 11 and earth terminal 10, described solid dielectric insulation stage body 2 tops of exposing are made as plug contact 1, the inboard of described elbow type metal shell 3 is equipped with solid dielectric insulation 7, described solid dielectric insulation 7 inboards are equipped with core body 5, be connected with zinc oxide resistance sheet 6 in the middle of the described core body 5, all scribble electric gel coating 4 with the lower end of exposing solid dielectric insulation stage body 2 between the inboard of described solid dielectric insulation 7 outsides and elbow type metal shell 3, with described insulation binding ring 8 described solid dielectric insulation 7 is locked between described solid dielectric insulation 7 bottoms and described pressure relief device 9 upper ends.
Described elbow-shaped inserting/pulling type metal-oxide lighting arrester outer shape is the elbow type.Use this outer shape to be convenient to the installation of discharge counter or live monitoring device.
The described solid dielectric insulation stage body 2 that exposes is conical cylinder.
Described core body 5 comprises aluminium alloy top electrode, zinc oxide resistance sheet 6 and the aluminium alloy bottom electrode that connects successively from top to bottom, forms with the conducting resinl bonding.
The solid dielectric insulation 7 that described core body 5 and metal shell are 3 is an electrically insulating silicone rubber.
Described electric gel coating 4 is the semiconductive glue-line.
The plug contact 1 on described conical cylinder top is elastic watchband's formula contact, makes the contact contact more firm and tight.
Adopt insulation property between core body 5 and the metal shell 3 and have certain flexible organic silicon rubber and be designed to conical cylinder 2 as insulating barrier and exposed parts organic silicon rubber, make not only good insulation preformance but also be beneficial to the installing hole that product inserts electric equipment again of product, and keep closely contact.
For further that core body 5 and metal shell 3 is fixed, the tight lock ring 8 of insulation is set in the bottom of described core body 5, tight lock ring 8 is the high pressure resistant insulation material.
The bottom surface of described elbow type metal shell 3 vertical end is an earth terminal.
For improving surface of insulating layer and internal electric field distribution situation, described plug-in metal oxide arrester will expose insulated part and be designed to conical cylinder, at core body 5 surface portions that contact with metal grounding shell 3 spraying semi-conductive adhesive 4, and extend to and expose solid insulation conical cylinder 2 lower ends.
Described elbow-shaped inserting/pulling type metal-oxide wall thunder device bottom is provided with insulating pressure releasing device 9, produces comminuted blast, the safety that jeopardizes other operational outfit when preventing the lightning arrester fault.
Described elbow-shaped inserting/pulling type metal-oxide lighting arrester is provided with one simultaneously and connects counter or live monitoring device terminal 12 and conversion lead 11 and earth terminal 10, the setting of conversion lead 11 makes user installation or uneasiness put electric counter or the live monitoring device is very convenient, promptly when the user need install discharge counter or live monitoring device, removing conversion lead 11 gets final product, otherwise mustn't remove conversion lead 11, satisfying system voltage is the special instructions for use of the following compact electric equipments such as GIS combined electrical apparatus of 66KV.
In sum, the present invention compared with prior art has following characteristics:
1. the maximum characteristics of this invention are that it is shaped as the elbow type, and the particularly suitable user is convenient to install.
2. between the inboard of solid dielectric insulation 7 outsides and grounded metal enclosure 3, increased by an electric gel coating 4 with the lower end of exposing solid dielectric insulation stage body 2, the product surface Potential distribution is improved, increased its insulating properties, and kept close contact.
3. the plug contact 1 that exposes solid dielectric insulation conical cylinder 2 upper ends is elastic watchband's formula contact, and this contact 1 can keep closely contacting with jack because of having elasticity.
4. core body 5 adopts zinc oxide resistance sheet 6 and upper and lower aluminum alloy anode to be formed by stacking with the conducting resinl bonding, make the present invention have good voltage-current characteristic and little physical dimension, high gradient zinc oxide resistance sheet 6 is closely contacted with upper and lower aluminum alloy anode, and can keep excellent conductive performance, the product global reliability can increase.
5. the lower end of this invention elbow type metal shell is provided with one and connects counter or live monitoring device terminal 12 and conversion lead 11 and earth terminal 10, make user installation or uneasiness put electric counter or the live monitoring device is very convenient, promptly when the user need install discharge counter or live monitoring device, remove conversion lead 11 and get final product, otherwise mustn't remove conversion lead 11.
6. being widely used in transformer station and voltage is the overvoltage protection of the following electric equipments such as GIS combined electrical apparatus of 66KV.
Claims (8)
1. elbow-shaped inserting/pulling type metal-oxide lighting arrester, it is characterized in that comprising an elbow type metal shell (3) that has flange, expose solid dielectric insulation stage body (2), plug contact (1), insulating pressure releasing device (9), discharge counter or live monitoring device terminal (12), conversion lead (11), earth terminal (10), solid dielectric insulation (7), core body (5), electricity gel coating (4) and insulation binding ring (8), the wherein said horizontal ends that has the elbow type metal shell (3) of flange is connected with the described solid dielectric insulation stage body (2) that exposes, the described vertical end that has the elbow type metal shell (3) of flange connects insulating pressure releasing device (9) successively, discharge counter or live monitoring device terminal (12) and conversion lead (11) and earth terminal (10), described solid dielectric insulation stage body (2) top of exposing is made as plug contact (1), the inboard of described elbow type metal shell (3) is equipped with solid dielectric insulation (7), described solid dielectric insulation (7) inboard is equipped with core body (5), be connected with zinc oxide resistance sheet (6) in the middle of the described core body (5), all scribble electric gel coating (4) with the lower end of exposing solid dielectric insulation stage body (2) between the inboard of described solid dielectric insulation (7) outside and elbow type metal shell (3), with described insulation binding ring (8) described solid dielectric insulation (7) is locked between described solid dielectric insulation (7) bottom and described pressure relief device (9) upper end.
2. elbow-shaped inserting/pulling type metal-oxide lighting arrester according to claim 1 is characterized in that lightning arrester is shaped as the elbow type.
3. elbow-shaped inserting/pulling type metal-oxide lighting arrester according to claim 1 is characterized in that the described solid dielectric insulation stage body (2) that exposes is a conical cylinder.
4. elbow-shaped inserting/pulling type metal-oxide lighting arrester according to claim 1 is characterized in that described core body (5) comprises aluminium alloy top electrode, zinc oxide resistance sheet (6) and the aluminium alloy bottom electrode that connects successively from top to bottom, forms with the conducting resinl bonding.
5. elbow-shaped inserting/pulling type metal-oxide lighting arrester according to claim 1 is characterized in that the solid dielectric insulation (7) between described core body (5) and elbow type metal shell (3) is an electrically insulating silicone rubber.
6. elbow-shaped inserting/pulling type metal-oxide lighting arrester according to claim 1 is characterized in that described electric gel coating (4) is the semiconductive glue-line.
7. elbow-shaped inserting/pulling type metal-oxide lighting arrester according to claim 3, the plug contact (1) that it is characterized in that described conical cylinder top is elastic watchband's formula contact.
8. elbow-shaped inserting/pulling type metal-oxide lighting arrester according to claim 1 is characterized in that the bottom surface of described elbow type metal shell (3) vertical end is an earth terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100208013A CN101465187B (en) | 2009-01-04 | 2009-01-04 | Elbow-shaped inserting/pulling type metal-oxide lighting arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100208013A CN101465187B (en) | 2009-01-04 | 2009-01-04 | Elbow-shaped inserting/pulling type metal-oxide lighting arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101465187A CN101465187A (en) | 2009-06-24 |
| CN101465187B true CN101465187B (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100208013A Expired - Fee Related CN101465187B (en) | 2009-01-04 | 2009-01-04 | Elbow-shaped inserting/pulling type metal-oxide lighting arrester |
Country Status (1)
| Country | Link |
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| CN (1) | CN101465187B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950646A (en) * | 2010-09-07 | 2011-01-19 | 郭道林 | Touchable plug-pull arrester |
| CN102110504A (en) * | 2010-10-20 | 2011-06-29 | 何排枝 | Novel lightning arrester |
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2009
- 2009-01-04 CN CN2009100208013A patent/CN101465187B/en not_active Expired - Fee Related
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| CN101465187A (en) | 2009-06-24 |
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