CN203910730U - Novel drop-out fuse - Google Patents
Novel drop-out fuse Download PDFInfo
- Publication number
- CN203910730U CN203910730U CN201420305223.4U CN201420305223U CN203910730U CN 203910730 U CN203910730 U CN 203910730U CN 201420305223 U CN201420305223 U CN 201420305223U CN 203910730 U CN203910730 U CN 203910730U
- Authority
- CN
- China
- Prior art keywords
- fuse
- electric installation
- contact
- conductive device
- contact electric
- 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
- 239000012212 insulator Substances 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 31
- 238000009826 distribution Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 20
- 238000010891 electric arc Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Fuses (AREA)
Abstract
The utility model discloses a novel drop-out fuse. Main points of the technical scheme are that the novel drop-out fuse comprises an insulator, an upper contact conductive device, a lower contact conductive device and a fuse tube, the upper contact conductive device and the lower contact conductive device are fixed at two ends of the insulator respectively, the fuse tube is internally provided with a fuse wire, the fuse tube is fixed between the upper contact conductive device and the lower contact conductive device, the fuse tube is lined with a vulcanized fiber tube, one end, which is opposite to the upper contact conductive device, of the fuse tube is fixedly connected to a contact, the fuse wire is connected with the contact and the lower contact conductive device in a tensioning mode, the side wall, which is close to the contact, of the fuse tube is provided with an opening connected to the internal part of the fuse tube, the upper contact conductive device is fixedly connected to a supporting plate, the supporting plate is fixedly connected to an air guide slot, an air outlet of the air guide slot faces towards the outer side surface of the contact, and an air inlet faces towards the opening. According to the novel drop-out fuse disclosed by the utility model, the fuse tube can drop out quickly when the fuse wire is melted, thereby cutting off electric arcs, protecting devices and distribution lines, and improving the safety.
Description
Technical field
The utility model relates to a kind of fuse, and more particularly, it relates to a kind of Novel drop type fuse.
Background technology
Fuse switch is the most frequently used a kind of protective switch of the short circuit of 10kV distribution line branch line and distribution transformer; it have economy, easy to operate, adapt to the features such as outdoor environment is strong, be widely used in 10kV distribution line and distribution transformer primary side as protection and carry out equipment throwing, cut the use of operation.It is arranged on 10kV distribution line branch line, can dwindle power failure range, because it has an obvious cut-off point, has possessed the function of isolating switch, has created a safety work environment to maintenance section circuit and equipment, has increased maintainer's the sense of security.
For the most common failure of existing fuse switch, have after fuse failure, cartridge fuse can not fall rapidly, can not in time electric arc be cut to the problem of lock, be embodied in: the burning pipe fault of common fuse all occurs after fuse failure, owing to can not falling fast after fuse failure, at this moment electric arc is not cut off in pipe, form continuous arcing and pipe has been burnt out, cartridge fuse is not often because upper and lower rotation axis is just being installed, or blocked by foreign material, and rotating shaft part is coarse, thereby resistance is excessive, the reason such as dumb, so that in the time of fuse failure, cartridge fuse still maintains the original state in short-term and can not fall very soon, quenching time extends and causes and burn pipe, there is very large potential safety hazard.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide one after fuse failure, and the Novel drop type fuse that cartridge fuse can fall fast, cuts lock electric arc in time, and protection device and distribution line improve fail safe.
For achieving the above object, the utility model provides following technical scheme: a kind of Novel drop type fuse, comprise insulator, upper contact electric installation, lower contact electric installation, cartridge fuse, upper contact electric installation with under contact electric installation and be individually fixed in insulator two ends, cartridge fuse is built-in with fuse, cartridge fuse is fixed between contact electric installation and lower contact electric installation, in described cartridge fuse, be lined with vulcanized fiber tube, one end of the relatively upper contact electric installation of cartridge fuse is fixedly connected with contact, fuse tension connect contact with under contact electric installation, described cartridge fuse is provided with UNICOM to the opening in cartridge fuse near the sidewall of contact, described upper contact electric installation is fixedly connected with supporting bracket, in described supporting bracket, be fixedly connected with air slot, the gas outlet of described air slot is towards the lateral surface of contact, air inlet is towards opening.
By adopting technique scheme; a large amount of gases that can utilize vulcanized fiber tube to produce under arcing spray from opening; gas enters air slot; through air slot guiding, finally act on the lateral surface of contact, by the power of gas, cartridge fuse is pushed open fast; it is fallen fast; cut in time lock electric arc, protection device and distribution line, improve fail safe.
The utility model is further set to: described opening is towards insulator side, and described gas outlet is towards the side of the relative insulator of contact.
By adopting technique scheme, because Novel drop type fuse is all that vertical being fixed on controller switching equipment used conventionally, opening is arranged at towards insulator side, gas outlet is towards the side of the relative insulator of contact, cartridge fuse can be released in the opposite direction of relative insulator from the gas of opening ejection, coordinate the effect of fusion tube self gravitation that it is fallen fast, this falls direction can obtain best beneficial effect.
The utility model is further set to: described cartridge fuse descends the port size of one end of touch base to be less than openings of sizes relatively.
By adopting technique scheme, can ensure fuse failure time, the gas producing in cartridge fuse mainly, towards opening part ejection, is given the thrust enough with the side of the relative insulator of contact, makes it eject and fall rapidly.
The utility model is further set to: above contact electric installation and be fixedly connected with insulating cover.
By adopting technique scheme, the moment that cartridge fuse is ejected is placed under insulating cover, and the electric arc blowing out contacts with the inwall of insulating cover, thereby cooling rapidly, increases and removes liberation, accelerates arc extinction, effectively prevents phase fault.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model Novel drop type fuse embodiment;
Fig. 2 is the A part enlarged drawing of Fig. 1.
Description of reference numerals: 1, upper contact electric installation; 2, lower contact electric installation; 3, insulator; 4, cartridge fuse; 11, supporting bracket; 12, air slot; 13, insulating cover; 41, contact; 42, opening; 43, fuse; 44, port; 121, gas outlet; 122, air inlet.
Embodiment
Be that the utility model Novel drop type fuse embodiment is described further referring to figs. 1 through Fig. 2.
The present embodiment Novel drop type fuse, comprise insulator 3, upper contact electric installation 1, lower contact electric installation 2, cartridge fuse 4, upper contact electric installation 1 with under contact electric installation 2 and be individually fixed in insulator 3 two ends, cartridge fuse 4 is built-in with fuse 43, in described cartridge fuse 4, be lined with vulcanized fiber tube, one end of the relatively upper contact electric installation 1 of cartridge fuse 4 is provided with contact 41, contact 41 is fixedly connected with cartridge fuse 4 by screw thread, fuse 43 tension connect contacts 41 with under contact electric installation 2, described cartridge fuse 4 is provided with UNICOM to the opening 42 in cartridge fuse 4 near the sidewall of contact 41, described upper contact electric installation 1 is fixedly connected with supporting bracket 11, in described supporting bracket 11, be fixedly connected with air slot 12, the gas outlet 121 of described air slot 12 is towards the lateral surface of contact 41, air inlet 122 is towards opening 42.The a large amount of gases that utilize vulcanized fiber tube to produce under arcing in the time that fuse 43 fuses spray from opening 42; gas enters air slot 12; lead through air slot 12; finally act on the lateral surface of contact 41; power by gas is pushed cartridge fuse 4 open fast, and it is fallen fast, cuts in time lock electric arc; protection device and distribution line, improve fail safe.
Described opening 42 is towards insulator 3 sides, and described gas outlet 121 is towards the side of contact 41 relative insulators 3.Because Novel drop type fuse is all that vertical being fixed on controller switching equipment used conventionally, opening 42 is arranged at towards insulator 3 sides, gas outlet 121 is towards the side of contact 41 relative insulators 3, the gas spraying from opening 42 can be released cartridge fuse 4 in the opposite direction of relative insulator 3, coordinate the effect of cartridge fuse 4 self gravitations that it is fallen fast, this falls direction can obtain best beneficial effect.If change opening 42 and gas outlet 121 towards, cartridge fuse 4 is pushed out in other direction, cannot obtain best beneficial effect, more or less can have problems, for example, go out towards insulator 3 thrusters, can strike on insulator 3, and use side by side because Novel drop type fuse is normal multiple on controller switching equipment, also can not release towards both sides, easily touch miscellaneous equipment, therefore taking this programme as preferred embodiment.
Described cartridge fuse 4 descends port 44 sizes of one end of touch base 2 to be less than opening 42 sizes relatively.While ensureing that fuse 43 fuses, the gas of cartridge fuse 4 interior generations is mainly towards opening 42 places ejection, give the enough thrust in side place of insulator 3 relative to contact 41, make it eject and fall rapidly, although port 44 is blocked and can be made opening 42 places obtain more gas and give the thrust that contact 41 is larger, so very easily cause cartridge fuse 4 to burn, need to change cartridge fuse 4, increase cost, therefore do not take the mode that port 44 is blocked.The embodiment that the present embodiment adopts herein can provide main thrust for contact 41, ensures again flowing of cartridge fuse 4 interior gases, avoids burning of cartridge fuse 4.
Described upper contact electric installation 1 is fixedly connected with insulating cover 13, and upper contact electric installation 1 fixed and covered by described insulating cover 13 by screw.The moment that cartridge fuse 4 is ejected by above-mentioned design is placed in insulating cover 13 times, and the electric arc blowing out contacts with the inwall of insulating cover 13, thereby cooling rapidly, increases and removes liberation, accelerates arc extinction, effectively prevents phase fault.The consideration of, ageing-resistant good insulating large, heat-resisting based on arc protection, hardness, the preferred fabrication material of insulating cover 13 is melmac, if certainly have other material that can reach above-mentioned effect also can.And described air slot 12 is also made for melmac material, and beneficial effect is same as above.
Claims (4)
1. a Novel drop type fuse, comprise insulator, upper contact electric installation, lower contact electric installation, cartridge fuse, upper contact electric installation with under contact electric installation and be individually fixed in insulator two ends, cartridge fuse is built-in with fuse, cartridge fuse is fixed between contact electric installation and lower contact electric installation, it is characterized in that: in described cartridge fuse, be lined with vulcanized fiber tube, one end of the relatively upper contact electric installation of cartridge fuse is fixedly connected with contact, fuse tension connect contact with under contact electric installation, described cartridge fuse is provided with UNICOM to the opening in cartridge fuse near the sidewall of contact, described upper contact electric installation is fixedly connected with supporting bracket, in described supporting bracket, be fixedly connected with air slot, the gas outlet of described air slot is towards the lateral surface of contact, air inlet is towards opening.
2. Novel drop type fuse according to claim 1, is characterized in that: described opening is towards insulator side, and described gas outlet is towards the side of the relative insulator of contact.
3. Novel drop type fuse according to claim 1 and 2, is characterized in that: cartridge fuse descends the port size of one end of touch base to be less than openings of sizes relatively.
4. Novel drop type fuse according to claim 3, is characterized in that: above contact electric installation and be fixedly connected with insulating cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420305223.4U CN203910730U (en) | 2014-06-10 | 2014-06-10 | Novel drop-out fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420305223.4U CN203910730U (en) | 2014-06-10 | 2014-06-10 | Novel drop-out fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203910730U true CN203910730U (en) | 2014-10-29 |
Family
ID=51784985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420305223.4U Expired - Fee Related CN203910730U (en) | 2014-06-10 | 2014-06-10 | Novel drop-out fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203910730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742593A (en) * | 2023-06-19 | 2023-09-12 | 国网山东省电力公司郯城县供电公司 | Power distribution network fault processing system and method |
-
2014
- 2014-06-10 CN CN201420305223.4U patent/CN203910730U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742593A (en) * | 2023-06-19 | 2023-09-12 | 国网山东省电力公司郯城县供电公司 | Power distribution network fault processing system and method |
| CN116742593B (en) * | 2023-06-19 | 2024-01-26 | 国网山东省电力公司郯城县供电公司 | Power distribution network fault processing system and method |
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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 |
Granted publication date: 20141029 |