CN201584650U - Disconnector used for multi-stage discharge lightning arrester - Google Patents
Disconnector used for multi-stage discharge lightning arrester Download PDFInfo
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- CN201584650U CN201584650U CN200920274259XU CN200920274259U CN201584650U CN 201584650 U CN201584650 U CN 201584650U CN 200920274259X U CN200920274259X U CN 200920274259XU CN 200920274259 U CN200920274259 U CN 200920274259U CN 201584650 U CN201584650 U CN 201584650U
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- gap
- disconnector
- hot
- lightning arrester
- type disconnector
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Abstract
The utility model relates to a disconnector used for a multi-stage discharge lightning arrester. The lightning arrester used in the prior art is a hot explosive type disconnector or a hot smelt type disconnector, the hot explosive type disconnector has high false action probability, the hot smelt type disconnector has great loss during heat conduction because the disconnector is exposed out in the air, the disconnector often can not be reliably disconnected, the product cost of the hot smelt type disconnector is high because the processing process of the hot smelt type disconnector during the production is complicated, and all of the hot smelt type disconnectors are single-stage discharge. The disconnector used for the multi-stage discharge lightning arrester is characterized in that an independent discharge gap is a built-in sealing gap consisting of gap positive electrodes, gap negative electrodes and an insulation case, the gap positive electrodes are fixed by an upper grounding screw bolt and a lower grounding screw bolt of an upper electrode and a lower electrode, the gap positive electrodes and the gap negative electrodes are at least one to three pairs, one to three fuse wires are arranged between the gap positive electrodes and the gap negative electrodes, and explosives are arranged in cavities of the gap positive electrodes and the gap negative electrodes. The utility model organically combines the hot smelt type disconnector and the hot explosive type disconnector for forming an integral structure, and the installation is convenient and fast.
Description
Technical field
The utility model relates to a kind of multistage discharge arrester disconnector.
Prior art
In at present domestic 3KV, 6KV, 10KV, the 35KV electric power system, generally installed disconnector additional for lightning arrester, present domestic lightning arrester mainly contains two kinds with disconnector, i.e. heat explosion type disconnector and hot melten type disconnector.Heat explosion type band disconnector lightning arrester is that its power frequency fault current continues to increase when utilizing lightning arrester to damage, and makes inner electric arc and the heat energy of producing of disconnector, ignites special explosive rapidly, and lightning arrester is out of service.And this heat explosion type lightning arrester, often this disconnector just begins action after through once big lightning impulse, causes lightning arrester might also not damage the operation that just logs off.So the probability of heat explosion type disconnector misoperation is than higher.The hot melten type disconnector is a thermal runaway principle of utilizing lightning arrester, and lightning arrester is inner meeting persistent fever before damage, and heat passes to disconnector by screw rod, disconnector is after arriving certain temperature, special alloy will melt, thereby disconnector is thrown off, and makes the lightning arrester operation that logs off.It can not break away from because of once big thunderbolt, and the probability of misoperation is also very little, and work is more stable, reliable than heat explosion type disconnector.But because disconnector is outer draining in the air, during the heat conduction loss bigger, especially use in the cold environment, disconnector often can not reliably break away from, so it is bigger to be affected by the external environment.Also have, because hot melten type disconnector processing technology more complicated when producing, production cost is than higher, and all be that single-stage is discharged.
In sum, though hot melten type disconnector and heat explosion type disconnector find that easily can not make system's generation single-phase earthing, the both has its shortcoming after can both making lightning arrester that fault is arranged.Also there is not at present a kind of disconnector to make lightning arrester more reliable when work in conjunction with both advantages.
The utility model content
The utility model is be to solve problems of the prior art, and a kind of simple in structure, safe in utilization, multistage discharge arrester disconnector easily is provided.
Technical solution of the present utility model is: a kind of multistage discharge arrester disconnector, it is characterized in that: independently discharging gap is built-in seal clearance, form by gap positive pole, gap positive pole and insulation crust that the upper and lower earth stud of top electrode and bottom electrode is fixing, described gap positive pole and gap negative pole have at least 1-3 right, between be provided with 1-3 fuse, be provided with explosive in the cavity of the anodal and gap negative pole in described gap.
The turbination that is shaped as mutual correspondence or the pole shape of described gap positive pole and gap negative pole.
The gap positive pole and the gap negative pole on described both sides support by the gap support tube.
Described top electrode is connected with insulation crust by screw thread with bottom electrode, and screw thread is provided with encapsulant.
The diameter of described fuse is 5～10cm.
Advantage of the present utility model is multistage discharge, and hot melten type and heat explosion type disconnector are combined, and constitutes integrative-structure, and is easy for installation, quick.
Description of drawings
Fig. 1 is the utility model structural representation.
The explanation of above-mentioned number in the figure: 1. go up bolt, 2. top electrode, 3. insulation crust, 4. gap support tube, 5. gap positive pole, 6. gap negative pole, 7. bottom electrode, 8. gunpowder, 9. fuse 10. plays bolt 11. discharging gaps.
Embodiment
Referring to Fig. 1, a kind of multistage discharge arrester disconnector, it is characterized in that: independently discharging gap 11 is built-in seal clearance, upper and lower earth stud 1,10 fixing gap positive pole 5, gap anodal 6 and insulation crusts 3 by top electrode 2 and bottom electrode 7 are formed, described gap anodal 5 and gap negative pole 6 have at least 1-3 right, between be provided with 1-3 fuse 9, described gap anodal 5 and gap negative pole 6 form certain cavity by gap support tube 4, are provided with explosive 8 in the cavity.Fuse 9 is welded on gap anodal 5 and the gap negative pole 6, and gap positive pole 5, gap negative pole 6 and gap support tube 4 all are sealed in the insulation crust 3 by top electrode 2 and bottom electrode 7.
Operation principle: when the lightning arrester operate as normal, electric current is let out the earth to overvoltage by gap anodal 5 and fuse 9 and bottom electrode 6.Even big thunderbolt is arranged, because the time is short, the shortage of heat that lightning arrester produces, can not make fuse 9 fusing yet, and when the persistent fever of lightning arrester inside, heat can and be gone up gap 5 conduction and give fuse 9 with last bolt 1 and top electrode 2, thereby make fuse 9 fusing, can make like this between gap anodal 5 and the gap negative pole 6 and form a space, when running into when thunderbolt inferior, can produce electric arc between gap anodal 5 and the gap negative pole 6, electric arc can be ignited the gunpowder around the gap support tube 4, thereby top electrode 2 or bottom electrode 7 thrown off, thereby make the operation that logs off of disconnector lightning arrester.Following bolt 10 directly ground connection or/and by connecing counter and monitor ground connection.
Claims (5)
1. multistage discharge arrester disconnector, it is characterized in that: independently discharging gap (11) is built-in seal clearance, form by gap positive pole (5), gap positive pole (6) and insulation crust (3) that the upper and lower earth stud (1) (10) of top electrode (2) and bottom electrode (7) is fixing, described gap positive pole (5) and gap negative pole (6) have at least 1-3 right, between be provided with 1-3 fuse (9), be provided with explosive (8) in the cavity of described gap positive pole (5) and gap negative pole (6).
2. a kind of multistage discharge arrester disconnector according to claim 1 is characterized in that: the turbination that is shaped as mutual correspondence or the pole shape of described gap positive pole (5) and gap negative pole (6).
3. a kind of multistage discharge arrester disconnector according to claim 2 is characterized in that: the gap positive pole (5) on described both sides and gap negative pole (6) support by gap support tube (4).
4. a kind of lightning arrester Fuse Type disconnector according to claim 3 is characterized in that: described top electrode (2) is connected with insulation crust (3) by screw thread with bottom electrode (7), and screw thread is provided with encapsulant.
5. a kind of multistage discharge arrester disconnector according to claim 3, it is characterized in that: the diameter of described fuse (9) is 5～10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920274259XU CN201584650U (en) | 2009-12-14 | 2009-12-14 | Disconnector used for multi-stage discharge lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920274259XU CN201584650U (en) | 2009-12-14 | 2009-12-14 | Disconnector used for multi-stage discharge lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201584650U true CN201584650U (en) | 2010-09-15 |
Family
ID=42726663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920274259XU Expired - Fee Related CN201584650U (en) | 2009-12-14 | 2009-12-14 | Disconnector used for multi-stage discharge lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201584650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11322934B2 (en) * | 2016-09-13 | 2022-05-03 | Hitachi Energy Switzerland Ag | Protection of a surge arrester with a better protection against failure from thermal overload in case of a temporary overvoltage in an electrical grid line |
-
2009
- 2009-12-14 CN CN200920274259XU patent/CN201584650U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11322934B2 (en) * | 2016-09-13 | 2022-05-03 | Hitachi Energy Switzerland Ag | Protection of a surge arrester with a better protection against failure from thermal overload in case of a temporary overvoltage in an electrical grid line |
| US11682899B2 (en) | 2016-09-13 | 2023-06-20 | Hitachi Energy Switzerland Ag | Protection of a surge arrester with a better protection against failure from thermal overload in case of a temporary overvoltage in an electrical grid line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20171214 |