CN202721098U - Insulating enclosed type expulsion fuse - Google Patents
Insulating enclosed type expulsion fuse Download PDFInfo
- Publication number
- CN202721098U CN202721098U CN 201220299402 CN201220299402U CN202721098U CN 202721098 U CN202721098 U CN 202721098U CN 201220299402 CN201220299402 CN 201220299402 CN 201220299402 U CN201220299402 U CN 201220299402U CN 202721098 U CN202721098 U CN 202721098U
- Authority
- CN
- China
- Prior art keywords
- downlead
- enclosed type
- connecting pipe
- tube connector
- insulating cover
- 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 - Fee Related
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000010949 copper Substances 0.000 claims abstract description 27
- 229910052802 copper Inorganic materials 0.000 claims abstract description 27
- 238000002955 isolation Methods 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000003916 acid precipitation Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 description 9
- 241001133184 Colletotrichum agaves Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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- Insulators (AREA)
Abstract
The utility model discloses an insulating enclosed type expulsion fuse. The insulating enclosed type expulsion fuse comprises an outlet line, a downlead, a copper connecting pipe and an insulating cover. One end of the copper connecting pipe is connected with the outlet line, and the other end of the copper connecting pipe is connected with the downlead. The outside of the connection ends of the copper connecting pipe and the outlet line and the outside of the connection ends of the downlead and the copper connecting pipe are covered with the insulating cover. The insulating cover is added, and the outlet line and the downlead both are made from rubber in an integral forming mode, so situations, such as dust pollution, salt pollution, acid rain, etc., can be effectively prevented, the insulation security is enhanced, the advantage of long-term stable performance is ensured, and a guarantee is provided for the secure and reliable operation of a grid.
Description
Technical field
The utility model relates to a kind of isolation enclosed type jet fuse, belongs to circuit on power system overload and short-circuit protection technical field.
Background technology
Fuse is the element of a kind of short circuit and overcurrent protection, has the characteristics such as simple in structure, economical and practical, easy to operate, that volume is small and exquisite.Install and use in 10kV distribution line branch, can dwindle power failure range, because it has an obvious cut-off point, possessed the function of isolating switch, created a safety work environment for maintenance circuit and equipment, increased maintainer's the sense of security.Be installed on the distribution transformer, can be used as the main protection of distribution transformer, so, in 10kV distribution line and distribution transformer, obtained popularizing.
What present user more than 98% used is traditional fuse switch, and it is one of most popular equipment in power distribution network, mainly as minute combination switch, short circuit and the overload protection equipment of distribution transformer.But traditional fuse switch device also exists many deficiencies: (1) Product Process is coarse, and workmanship is poor, and touch spring elasticity is not enough, causes contact bad and to produce spark overheated.(2) the fusion tube rotation axis is coarse dumb, makes the fusion tube angle not reach the regulation requirement, and the fusion tube size majority that especially is equipped with does not reach the rules requirement, fusion tube is long with the duckbilled dieback, causes the rear fusion tube of melt fusing not fall rapidly, with arc cutting, extinguish, cause fusion tube to burn or explode; The fusion tube size is short, the difficulty of closing a floodgate, and contact is bad, produces electric spark.(3) the specified contact capacity of fuse is little, and its lower limit is less than the three-phase shortcircuit capacity of protected system.At present, the 10kV outdoor drop-out fuse is divided into 3 clock models, i.e. 50A, 100A, 200A; The breaking capacity upper limit of 200A fuse switch is 200MVA, and lower limit is 20MVA.According to the ability of its rupturing capacity, can not find out that timely arc extinguishing after melt fusing during short trouble also makes easily fusion tube burn or explodes.(4) some new switch fusion tube size and fuse fixed contact divide the size coupling improper, very easily loosening, run into External Force Acting in case be in operation, vibration or strong wind weather, just voluntarily malfunction and falling has not only reduced electricity sales amount, and is difficult to guarantee the power supply reliability index.(5) come off in windproof, antifouling, anti-fault-free, also there are some problems in the aspects such as combined floodgate success rate.So the on-the-spot user of part just replaces fuse to reach adeciduate purpose with copper wire, aluminium wire; from and when causing fault fuse can not be normally and the prime switchgear carry out the mating protection action; enlarge power failure range, be unfavorable for management and the safe operation of electrical network.
Summary of the invention
The utility model provides a kind of isolation enclosed type jet fuse, and this fuse has increased insulating cover, has strengthened insulation safety, guarantees performance steady in a long-term, for the safe and reliable operation of electrical network provides safeguard.
For achieving the above object, adopt following technical scheme: a kind of isolation enclosed type jet fuse comprises egress line, downlead, copper tube connector and insulating cover; One end connection outlet line of copper tube connector, the other end connects downlead; The outside of the link of copper tube connector and egress line, downlead and copper tube connector is covered with insulating cover.
Described copper tube connector adopts copper zinc-plated.
Described insulating cover adopts EP rubber to make.
The insulating barrier of described egress line adopts EP rubber to make.
The insulating barrier of described downlead adopts cross-linked polyolefin to make.
The beneficial effects of the utility model: increased insulating cover, and egress line and downlead all adopt the integrally formed structure of rubber, can effectively prevent dust pollution, salt dirt, acid rain etc., have strengthened insulation safety, guarantee performance steady in a long-term, for the safe and reliable operation of electrical network provides safeguard.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model copper tube connector.
Illustrate: 1, egress line; 2, copper tube connector; 3, downlead; 4, insulating cover.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is further described.
Isolation enclosed type jet fuse of the present utility model comprises egress line 1, downlead 3, copper tube connector 2 and insulating cover 4; One end connection outlet line 1 of copper tube connector 2, the other end connects downlead 3; The outside of the link of copper tube connector and egress line, downlead and copper tube connector is covered with insulating cover 4.
The specification of all parts is as follows:
1. fuse egress line 8 ㎜
2, adopt the EP rubber-insulated wire to make wire, the electric wire external diameter is φ 11.6mm, heart yearn copper is φ 1.2mm * 7 piece, thickness of insulating layer 4.0mm.
2. downlead 16 ㎜
2, adopt the cross-linked polyolefin insulated wire to do the high pressure downlead, the electric wire external diameter is φ 10.2mm, heart yearn copper 16 ㎜
2, thickness of insulating layer 2.5mm.
3. it is zinc-plated that the copper tube connector adopts copper, and the construction profile schematic diagram as shown in Figure 2.
4. insulating cover adopts EP rubber to do cold shrink tube.
Claims (5)
1. isolation enclosed type jet fuse, comprise egress line, downlead, copper tube connector, one end connection outlet line of copper tube connector, the other end connects downlead, it is characterized in that the outside of the link of copper tube connector and egress line, downlead and copper tube connector is covered with insulating cover.
2. isolation enclosed type jet fuse according to claim 1 is characterized in that, the copper tube connector adopts copper zinc-plated.
3. isolation enclosed type jet fuse according to claim 1 is characterized in that, insulating cover adopts EP rubber to make.
4. isolation enclosed type jet fuse according to claim 1 is characterized in that, the insulating barrier of egress line adopts EP rubber to make.
5. isolation enclosed type jet fuse according to claim 1 is characterized in that, the insulating barrier of downlead adopts cross-linked polyolefin to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299402 CN202721098U (en) | 2012-06-25 | 2012-06-25 | Insulating enclosed type expulsion fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299402 CN202721098U (en) | 2012-06-25 | 2012-06-25 | Insulating enclosed type expulsion fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202721098U true CN202721098U (en) | 2013-02-06 |
Family
ID=47622910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220299402 Expired - Fee Related CN202721098U (en) | 2012-06-25 | 2012-06-25 | Insulating enclosed type expulsion fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202721098U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700550A (en) * | 2013-12-10 | 2014-04-02 | 杭州国电电气设备有限公司 | Outdoor all-insulated jet fuse protector |
-
2012
- 2012-06-25 CN CN 201220299402 patent/CN202721098U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700550A (en) * | 2013-12-10 | 2014-04-02 | 杭州国电电气设备有限公司 | Outdoor all-insulated jet fuse protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. JIANGSU ELECTRIC POWER CO Effective date: 20130217 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130217 Address after: 210008 Zhongshan Road, Jiangsu, No. 251, Patentee after: Nanjing Power Supply Co., Jiangsu Prov. Power Co. Patentee after: State Grid Corporation of China Patentee after: Jiangsu Electric Power Company Address before: 210008 Zhongshan Road, Jiangsu, No. 251, Patentee before: Nanjing Power Supply Co., Jiangsu Prov. Power Co. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20180625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |