CN205645736U - Fuse for drop out fuse - Google Patents
Fuse for drop out fuse Download PDFInfo
- Publication number
- CN205645736U CN205645736U CN201620483021.8U CN201620483021U CN205645736U CN 205645736 U CN205645736 U CN 205645736U CN 201620483021 U CN201620483021 U CN 201620483021U CN 205645736 U CN205645736 U CN 205645736U
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- fuse
- copper
- hollow cylinder
- spring
- piston
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Abstract
The utility model discloses a fuse for drop out fuse, including fuse -element, strengthening rib, spring, piston, hollow cylinder, crimping cover, copper pigtail, upper portion terminal and fillister head screw, wherein, hollow cylinder's upper end is glued and is connected the upper portion terminal, the bottom of do not connecting the upper portion terminal and the top of crimping cover are equallyd divide to the both ends of fuse -element and strengthening rib, the copper pigtail is connected to the bottom of crimping cover, hollow cylinder's inside is provided with the piston, and the piston bush is in the outside of crimping cover to form with hollow cylinder and closely cooperate, the ring spring overlaps in the outside of crimping cover with the copper pigtail, the upper end and the hinge joint of spring, and the lower extreme is connected with the fixed pin of fusion tube bottom to make the spring be in stretched form, fillister head screw locates the top of upper portion terminal for the extension rod of connecting drop out fuse. This structure can produce the rapid extinguished electric arc in the twinkling of an eye of electric arc in fuse -element fusing, has better effect, the ground operation of guarantee electric power system safe and reliable to overload fault current.
Description
Technical field
This utility model belongs to Medium voltage switch or circuit breaker appliance field, particularly to a kind of fuse switch fuse member structure.
Background technology
Fuse switch is protection electrical equipment conventional in power system.Fuse switch is mainly made up of fuse member, fusion tube, support insulator, arc quenching material etc..Conventional melt is that silver, copper, stannum or its alloy are made, and conventional arc quenching material has the materials such as glass fibre, vulcan fibre, boric acid, resinae.During use; fuse switch is connected in protected circuit; when by protection circuit be short-circuited fault or overload time; electric current exceedes certain value and through after a period of time; the heat fusing melt produced by melt self; by the gas exhausted material arc-extinguishing medium of fusion tube inwall, arc extinction cut-off circuit again, thus power system and other power equipments are all played the effect of protection.
Fuse switch is widely used in the power distribution network of 3-35kV power system, and rated current is in the occasion of 1-200A, as circuit or the short circuit of power transformer and overload protection.Being typically mounted on bar, its operation principle is that melt fuses rapidly, forms electric arc when melt is by overload or short circuit current, and under the high temperature of electric arc, arc quenching material decomposes the gas producing a large amount of High Temperature High Pressure, forms strong longitudinal arc blow-out.Melt fusing after, upper contact head because lose tension force and under turn over, make tight latch mechanism discharge fusion tube, fusion tube falls under gravity, forms obvious fracture.
Development along with power system, the connecting-disconnecting function of fuse and break performance are difficult to solve short circuit current and constantly increase the problem taken place frequently with overcurrent, in addition run out of doors for a long time, fuse frame for movement is susceptible to corrosion, phenomenon waited indefinitely by card, the biggest short-circuit current failure of interruption cause heavy losses, low overload fault electric current the most also can damage power system can to power system and other power equipments to cause other Electric Power Equipment Insulations aging.Can not cut-off fault current in time, electric arc burned for long time can cause fuse member and fusion tube scaling loss, even destroys other power equipments, will be enlarged by power failure range and brings bigger economic loss, and this does not meets the requirement of power system security and reliability yet.Therefore, design break performance is good, it is to avoid electric arc burned for long time, and the fuse switch that can quickly extinguish electric arc is the Main way of research and development.
Consider from the principle of arc extinction, when electric arc produces when, accelerate the fracture distance of elongating arc, make electric arc elongate rapidly, the most also provide vacuum extinction medium for electric arc, from different blow-out angle two-way functions advantageously in arc extinction.Based on this thinking, this case thus produces.
Utility model content
The purpose of this utility model, is to provide a kind of fuse switch fuse member, and it can extinguish rapidly electric arc in the moment of melt fusing generation electric arc, has preferable effect to overload fault electric current, ensures that power system security reliably runs.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of fuse switch fuse member, including melt, reinforcement, spring, piston, hollow cylinder, pressure welding case, copper pigtail, upper terminal and cheese head screw, wherein, the upper end glue of hollow cylinder connects upper terminal；One end of melt connects the bottom of upper terminal, and the other end connects the top of pressure welding case；One end of reinforcement connects the bottom of upper terminal, and the other end connects the top of pressure welding case；The bottom of described pressure welding case connects copper pigtail, and described copper pigtail constitutes current path with the external cabling terminal of fuse switch；Described hollow cylinder be internally provided with piston, piston bush in the outside of pressure welding case, and with hollow cylinder formed closely cooperate；Ring spring is enclosed within the outside of pressure welding case and copper pigtail, and the upper end of spring is connected with piston, and lower end is connected with the steady pin bottom fusion tube, and makes spring be in tension；The top of upper terminal is located at by cheese head screw, for connecting the extension rod of fuse switch.
Above-mentioned upper terminal is copper material.
Above-mentioned melt uses copper, silver, stannum or copper silver ashbury metal that purity is higher to make.
Above-mentioned reinforcement uses nichrome to make.
Above-mentioned pressure welding case is copper ring set.
Above-mentioned melt, reinforcement and copper pigtail are crimped on inside copper ring set by the way of cold extrusion or welding.
Above-mentioned copper pigtail is copper stranded conductor, and its surface scribbles insulating oil.
Above-mentioned fuse member also includes being sleeved on hollow cylinder external body and having the auxiliary extinction of arc pipe of aerogenesis function.
After using such scheme, this utility model has the following characteristics that
(1) in system for distribution network of power, has preferable effect to cut-offfing overload fault electric current；
(2) when protected circuit or transformator break down, fault current passes through melt, and melt fusing produces the moment of electric arc, and spring pulls piston to move downward, and increases melt fracture distance, also provides for the arc-chutes environment of a class vacuum, beneficially blow-out simultaneously；
(3) energy quickly blow-out, environmentally friendly, and simple in construction is easy to maintenance；
(4) may be used for the fuse switch of different stage requirement, fuse member has good versatility.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the schematic diagram of this utility model and fusion tube assembling.
Detailed description of the invention
Below with reference to accompanying drawing, the technical solution of the utility model and beneficial effect are described in detail.
As shown in Figure 1, this utility model provides a kind of fuse switch fuse member, including melt 1, reinforcement 2, spring 3, piston 4, hollow cylinder 5, pressure welding case 7, copper pigtail 8, upper terminal 9, cheese head screw 10 and auxiliary extinction of arc pipe 11, introduce separately below.
The upper end open of hollow cylinder 5 arranges upper terminal 9, and the two glue connects, and makes upper terminal 9 upper end open of hollow cylinder 5 be completely enclosed, and described upper terminal 9 is copper material.
One end of melt 1 connects the bottom of upper terminal 9, and the other end connects the top of pressure welding case 7, and described melt 1 can use copper, silver, stannum or copper silver ashbury metal that purity is higher to make.Reinforcement 2 is corresponding with melt 1, and its one end connects the bottom of upper terminal 9, and the other end connects the top of pressure welding case 7, and described reinforcement 2 uses high intensity to strain silk, such as nichrome.Described pressure welding case 7 is copper ring set, connects copper pigtail 8, melt 1, reinforcement 2 and copper pigtail 8 are crimped on inside copper ring set, thus are coupled together with copper pigtail 8 by melt 1 by the way of cold extrusion or welding bottom it.Described copper pigtail 8 be copper stranded conductor, and the external cabling terminal composition current path of fuse switch, and its surface scribbles insulating oil, the least with the gap of auxiliary extinction of arc pipe 11 and affect fusion tube and fall after preventing longtime running corrosion.
The inner wall smooth of described hollow cylinder 5, is internally provided with piston 4, and piston 4 is enclosed within the outside of pressure welding case 7, and closely cooperates with hollow cylinder 5 formation, and piston 4, hollow cylinder 5 collectively constitute class vacuum interrupter with upper terminal 9.
Spring 3 ring set is in the outside of pressure welding case 7 with copper pigtail 8, and the upper end of spring 3 is connected with piston 4, and lower end is connected with the steady pin 14 bottom fusion tube 13, and makes spring 3 be in tension, can coordinate shown in Fig. 2.So, when melt 1 fusing produces electric arc, the ineffective power of spring 3 pulls rapidly piston 4 to move downward, and while increasing melt 1 fracture distance, provides the arc-chutes environment of a class vacuum to melt 1.
Auxiliary extinction of arc pipe 11 is sleeved on outside hollow cylinder 5, and has aerogenesis function, and when piston 4 departs from from hollow cylinder 5, if electric arc does not the most extinguish, auxiliary extinction of arc pipe 11 remains to longitudinal arc blow-out, makes electric arc extinguish in time.
The top of upper terminal 9 is located at by cheese head screw 10, for connecting the extension rod 12 of fuse switch, regulates the melt 1 position in fusion tube 13.
During work, under normal circumstances, spring 3 is in tension, reinforcement 2, pressure welding case 7 and upper terminal 9 play the fixing effect of melt 1, making melt 1 keep the port distance fixed when properly functioning, prevent melt 1 from being stretched by thermal deformation, reinforcement 2 is also subject to external pull simultaneously；When melt 1 fusing produces electric arc, spring 3 shrinks because of ineffective power, driving piston 4 to move downward in hollow cylinder 5, thus increase the fracture distance of melt 1, the class vacuum interrupter that hollow cylinder 5, upper terminal 9 and piston 4 are formed simultaneously can make electric arc quickly extinguish.
Above example only illustrates technological thought of the present utility model; protection domain of the present utility model can not be limited with this; every according to the technological thought that the utility model proposes, any change done on the basis of technical scheme, within each falling within this utility model protection domain.
Claims (8)
1. a fuse switch fuse member, it is characterised in that: including melt, reinforcement, spring, piston, hollow cylinder, pressure welding case, copper pigtail, upper terminal and cheese head screw, wherein, the upper end glue of hollow cylinder connects upper terminal；One end of melt connects the bottom of upper terminal, and the other end connects the top of pressure welding case；One end of reinforcement connects the bottom of upper terminal, and the other end connects the top of pressure welding case；The bottom of described pressure welding case connects copper pigtail, and described copper pigtail constitutes current path with the external cabling terminal of fuse switch；Described hollow cylinder be internally provided with piston, piston bush in the outside of pressure welding case, and with hollow cylinder formed closely cooperate；Ring spring is enclosed within the outside of pressure welding case and copper pigtail, and the upper end of spring is connected with piston, and lower end is connected with the steady pin bottom fusion tube, and makes spring be in tension；The top of upper terminal is located at by cheese head screw, for connecting the extension rod of fuse switch.
2. a kind of fuse switch fuse member as claimed in claim 1, it is characterised in that: described upper terminal is copper material.
3. a kind of fuse switch fuse member as claimed in claim 1, it is characterised in that: described melt uses copper, silver, stannum or copper silver ashbury metal that purity is higher to make.
4. a kind of fuse switch fuse member as claimed in claim 1, it is characterised in that: described reinforcement uses nichrome to make.
5. a kind of fuse switch fuse member as claimed in claim 1, it is characterised in that: described pressure welding case is copper ring set.
6. a kind of fuse switch fuse member as claimed in claim 5, it is characterised in that: described melt, reinforcement and copper pigtail are crimped on inside copper ring set by the way of cold extrusion or welding.
7. a kind of fuse switch fuse member as claimed in claim 1, it is characterised in that: described copper pigtail is copper stranded conductor, and its surface scribbles insulating oil.
8. a kind of fuse switch fuse member as claimed in claim 1, it is characterised in that: described fuse member also includes being sleeved on hollow cylinder external body and having the auxiliary extinction of arc pipe of aerogenesis function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620483021.8U CN205645736U (en) | 2016-05-24 | 2016-05-24 | Fuse for drop out fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620483021.8U CN205645736U (en) | 2016-05-24 | 2016-05-24 | Fuse for drop out fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205645736U true CN205645736U (en) | 2016-10-12 |
Family
ID=57052077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620483021.8U Expired - Fee Related CN205645736U (en) | 2016-05-24 | 2016-05-24 | Fuse for drop out fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205645736U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863236A (en) * | 2017-10-27 | 2018-03-30 | 国网上海市电力公司 | A kind of voltage transformer of band protection suggestion device |
| CN108648974A (en) * | 2016-12-23 | 2018-10-12 | 泉州有刺电子商务有限责任公司 | A kind of blowout method of fuse switch |
| CN110265274A (en) * | 2019-06-05 | 2019-09-20 | 朱雪英 | A kind of certifiable precision and high voltage drop-out type fuse cutout with long service life |
| CN111863564A (en) * | 2020-07-09 | 2020-10-30 | 刘兴华 | Fuse tube with long service life |
-
2016
- 2016-05-24 CN CN201620483021.8U patent/CN205645736U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648974A (en) * | 2016-12-23 | 2018-10-12 | 泉州有刺电子商务有限责任公司 | A kind of blowout method of fuse switch |
| CN107863236A (en) * | 2017-10-27 | 2018-03-30 | 国网上海市电力公司 | A kind of voltage transformer of band protection suggestion device |
| CN110265274A (en) * | 2019-06-05 | 2019-09-20 | 朱雪英 | A kind of certifiable precision and high voltage drop-out type fuse cutout with long service life |
| CN111863564A (en) * | 2020-07-09 | 2020-10-30 | 刘兴华 | Fuse tube with long service life |
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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: 20161012 Termination date: 20190524 |