CN106128900A - Lead-out wire and upper locking fuse in a kind of major diameter - Google Patents
Lead-out wire and upper locking fuse in a kind of major diameter Download PDFInfo
- Publication number
- CN106128900A CN106128900A CN201610717478.5A CN201610717478A CN106128900A CN 106128900 A CN106128900 A CN 106128900A CN 201610717478 A CN201610717478 A CN 201610717478A CN 106128900 A CN106128900 A CN 106128900A
- Authority
- CN
- China
- Prior art keywords
- fuse
- cartridge fuse
- insulating ceramic
- cartridge
- lead
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/08—Fusible members characterised by the shape or form of the fusible member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/22—Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/38—Means for extinguishing or suppressing arc
Landscapes
- Fuses (AREA)
Abstract
Lead-out wire and upper locking fuse in the open a kind of major diameter of the present invention, the top of insulating ceramic is provided with locking device；The binding post of fuse and bottom cartridge fuse is fixed and is passed top cartridge fuse and is fixed on the upper end of insulating ceramic by described locking device；Described fuse has, in the part of middle part cartridge fuse, the fuse part that diameter is less, and the two ends of described fuse part are provided with the outside of the fuse between flash hider, described flash hider and top cartridge fuse and bottom cartridge fuse and are cased with pyrocondensation insulating barrier；In axial bore between described top cartridge fuse, bottom cartridge fuse, spring is set；The bottom of bottom cartridge fuse is fixed with impact head；The bottom of the axial bore of described insulating ceramic arranges closure.The invention can ensure that the fuse after fusing is state of insulation, it is to avoid the bad electric discharge phenomena caused in fusing position；Additionally, the present invention utilizes the direct compression spring of cartridge fuse, and the sealed bottom that have employed impact head destruction insulating ceramic blocks up, therefore, it is ensured that bottom cartridge fuse ejects reliable.
Description
Technical field
The present invention relates to electrical equipment technical field, a kind of fuse.
Background technology
Expulsion fuse is to be contained in the insulation tube being made up of solid gas generant material by melt.Solid gas generant material can be adopted
Cardboard or pmma material etc. is highlighted with electrician.When short circuit current is by melt, melt fuses generation electric arc immediately, high temperature
Electric arc makes solid gas generant material decompose rapidly a large amount of gases at high pressure of generation, thus is sprayed at pipe two ends by ionized gas band electric arc
Go out, send great acousto-optic, and extinguish electric arc when alternating current zero passage and breaking current.Chinese Patent Application No.
201310538197.X discloses a kind of fuse, and cartridge fuse is arranged at the inside of insulating ceramic, connection corresponding with cartridge fuse
Upper contact electrode and lower contact electrode are respectively arranged on top and the bottom of insulating ceramic, and the two is connected respectively inlet line and goes out
Mouthful line, inlet line and egress line draw the outside in insulating ceramic, the exit of the two be respectively provided with seal plug and under close
Block head, and upper seal plug and lower seal plug are respectively by inlet line and egress line insulation parcel, the circuit of outlet accesses
In circuit, cartridge fuse forms circuit after fusing in insulating ceramic and cut-offs, and excision faulty section circuit or faulty equipment arrange molten
The inlet line of disconnected device and the insulation package structure of outlet line end, by the Each part insulated enclosure of fuse in insulating ceramic
Inside, improves insulating protection performance.Cartridge fuse is divided into upper, middle and lower three part by this patent, after fuse failure, and melting of mid portion
Fiber tube ruptures, and bottom cartridge fuse is ejected in insulating ceramic by spring.Column defects in the presence of this patent: 1. cannot determine that fuse arrives
First the end somewhere fuses, if fusing occurs in bottom, then in the fuse of top residual and lower line outlet
Lead-out wire due to close together, be easily generated electric arc, cause line fault；2. the ejecting structure of this patent is unreasonable, once under
Portion's cartridge fuse ejects the most completely, then stay spring in insulating ceramic etc. as conductor, the phenomenon of thoroughly disjunction easily occurs,
Easily cause loss.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide the fuse of a kind of reliable breaking, concrete technical side
Case is as follows:
Lead-out wire and upper locking fuse in a kind of major diameter, including insulating ceramic and the axle being arranged at described insulating ceramic
The inwardly cartridge fuse of intracavity, it is characterised in that: the top of described insulating ceramic is provided with locking device；Described cartridge fuse includes
Top cartridge fuse is fixed and passed to the binding post of portion's cartridge fuse, middle part cartridge fuse and bottom cartridge fuse, fuse and bottom cartridge fuse
The upper end of insulating ceramic it is fixed on by described locking device；Described fuse has less the melting of diameter in the part of middle part cartridge fuse
Disconnected portion, the two ends of described fuse part are provided with the fuse between flash hider, described flash hider and top cartridge fuse and bottom cartridge fuse
Outside is cased with pyrocondensation insulating barrier；In axial bore between described top cartridge fuse, bottom cartridge fuse, spring is set；Described bottom is melted
Between the spacing preiection of fiber tube and insulating ceramic, conducting ring is set；Conducting ring is connected with lower lead-out wire；The bottom of bottom cartridge fuse is solid
Surely there is impact head；The bottom of the axial bore of described insulating ceramic arranges closure；Described locking device includes being fixed on insulation
Chuck in porcelain body top groove, is threaded outside described chuck, and centre arranges wedge shape through hole；The lead-out wire of top cartridge fuse
Through described wedge shape through hole；Arranging binding nut outside described chuck, the internal diameter of described binding nut is less than chuck exterior bottom
External diameter and more than the external diameter on chuck top to ensure screwing along with binding nut, lead-out wire is clamped and fixes by wedge shape through hole；
The diameter of the upper lead-out wire of described fuse is more than the fuse diameter in the cartridge fuse of fuse top.
Due to the fact that and have employed pyrocondensation insulant, and preset fusing position, it is ensured that the fuse after fusing
In state of insulation, it is to avoid the bad electric discharge phenomena caused in fusing position；Additionally, the present invention utilizes cartridge fuse directly to compress bullet
Spring, and the sealed bottom that have employed impact head destruction insulating ceramic is stifled, therefore, it is ensured that and bottom cartridge fuse ejects reliable.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of the present invention；
Fig. 2 is the structural representation of cartridge fuse；
Fig. 3 is the schematic diagram of upper locking device.
Detailed description of the invention
Illustrating the present invention below in conjunction with the accompanying drawings, as shown in Figure 1 and Figure 2, the present invention includes insulating ceramic and is arranged at institute
Stating the cartridge fuse in the axial bore 100 of insulating ceramic, insulating ceramic includes insulating ceramic 14 and lower insulating ceramic 15 two
Point, the top of described insulating ceramic is provided with locking device 10；As it is shown on figure 3, described locking device 10 includes being fixed on absolutely
Chuck 106 in edge porcelain body top groove, is threaded outside described chuck 106, and centre arranges wedge shape through hole 105；Top is melted
The lead-out wire 1 of fiber tube 6 is through described wedge shape through hole 105；Binding nut 107, described binding nut are set outside described chuck 106
The internal diameter of 107 external diameter less than chuck 106 exterior bottom the external diameter more than chuck top are to ensure along with binding nut 107
Screwing, lead-out wire 1 is clamped and fixes by wedge shape through hole 105.
Described cartridge fuse includes top cartridge fuse 6, middle part cartridge fuse 7 and bottom cartridge fuse 8, fuse and bottom cartridge fuse 8
Binding post fix and pass top cartridge fuse and be fixed on the upper end of insulating ceramic 14 by described locking device 10；Described fuse exists
The part of middle part cartridge fuse has the less fuse part of diameter 3, and the two ends of described fuse part 3 are provided with flash hider 91, described fire prevention
The outside of the fuse 2 between cap 91 and top cartridge fuse 6 and the fuse 4 between flash hider 91 and bottom cartridge fuse is cased with pyrocondensation insulating barrier
9；In axial bore 100 between described top cartridge fuse 6, bottom cartridge fuse 8, spring 13 is set；Described top cartridge fuse 6, bottom
The outside of cartridge fuse 8 is also cased with pyrocondensation insulating barrier 9；Set between the spacing preiection 101 of described bottom cartridge fuse 8 and lower insulating ceramic 15
Put conducting ring 51；Conducting ring 51 is connected with lower lead-out wire 5；The bottom of bottom cartridge fuse 8 is fixed with impact head 11；Described insulation porcelain
The bottom of the axial bore 100 of body arranges closure 12.
Described upper insulating ceramic 14 and lower insulating ceramic 15 are embedded structures, and the outside of seam crossing arranges mounting ring 16, peace
Dress ring 16 arranges annular protrusion, and described annular protrusion embeds in the annular groove of upper insulating ceramic 14 and lower insulating ceramic 15, institute
State at the fastening of mounting ring 16 17 and through hole 18 is set, be used for arranging bolt and nut.
The material of described pyrocondensation insulating barrier can use 260 DEG C of Teflon PTFE heat of Shanghai Ou Xian industry development company limited
The draw, its performance indications such as following table:
| Project | Test method | Characteristic requirements |
| Proportion | ASTM D792 | 2.16g/cm3 |
| Tensile strength | ASTM D638 | 24.5MPa |
| Percentage elongation | ASTM D638 | 350% |
| Bending coefficient | ASTM D790 | 490MPa |
| Impact strength | ASTM D256 ,+23 DEG C of-54 DEG C of j/m | Flawless 107 |
| Hardness | ASTM D2240 | 55Shore D |
| Coefficient of friction | 0.1 | |
| Fusing point | 327℃ | |
| Use temperature | 260℃ | |
| Flammability | UL-224 | VW-1 |
| Dielectric constant 103-106Hz | ASTM D150 | 2.1 |
| Dissipation factor 106Hz | ASTM D150 | 0.0002 |
| Electric arc coefficient | ASTM D495 | 300S |
| Specific insulation | ASTM D257 | 1018 Ω .cm |
| Weatherability | “Weather-o-meter”(2000h) | Unchanged |
| Solvent resistant | ASTM D543 | Excellent |
| Chemically-resistant | ASTM D543 | Excellent |
During fuse failure, its temperature is higher, and the high temperature produced with electric arc, due to the fact that and is provided with flash hider,
High temperature at fusing can be intercepted, and the temperature of fuse itself raises and can not be melted completely by the material of pyrocondensation insulating barrier
Changing, be only will to carry out limited thawing with the part of fuse wire contacts, outside is due to the quick release of spring, broken in the middle part of cartridge fuse
Ejecting after splitting, heat-shift quick with air during ejecting, the condition just meeting pyrocondensation makes heat-shrink tube receive
Contracting.For adapting to different technology requirements, different types of fuse materials can be used, as used the metals such as copper, silver, lead to meet difference
Fusing requirement.
Will not hang on cartridge fuse when cartridge fuse ejects downwards for the conducting ring 51 described in ensureing, described conducting ring 51 is
" U " matrix shape, the size of opening part is more than the external diameter of cartridge fuse.
For ensureing that the diameter of the upper lead-out wire of described fuse is more than in the cartridge fuse of fuse top reliably by spring precommpression
Fuse diameter.
For ensureing reliable insulation, outside described lower lead-out wire 5, insulating barrier 19 is set.
Described flash hider 91, closure 12 and impact head 11 material can use ceramic material.
For ensureing described closure 12 energy rapid disruption when being impacted by impact head 11, described impact head 11 is triangle,
Its tip is down.Described closure 12 arranges recess with lower insulating ceramic 15 junction.
During for ensureing fusing, the quick of spring discharges, and described spacing preiection 101 embeds the groove inside lower insulating ceramic 15
In, and described spacing preiection material is low-melting alloy, the fusing point produced such as Dongguan Wo Chang metal decoration material factory is 70 DEG C
Alloy, interferes with this spacing preiection when to use the benefit one of this material be to prevent spring from discharging, and spring cannot discharge；Additionally
Even if benefit be to there occurs interference, electric arc can be produced owing to interfering, cause temperature to rise, and the rising of temperature necessarily carries
Carry out the thawing of this spacing preiection, and then ensure that the final release of spring.
When fuse is properly functioning, melt makes fuse be in closure state by the tensile force of pull spring.Work as system
When breaking down, fault current makes fuse fuse rapidly, and spring can drive cartridge fuse to move downward quickly, without barrier.Electric arc
Produced heat can make cartridge fuse produce a number of noble gas, the rapid movement of cartridge fuse Internal fuse and noble gas
Arc extinguishing effect, electric arc can be extinguished rapidly, cut off short circuit current, simultaneously, the material of pyrocondensation insulating barrier will be disconnected after being heated
Remain fuse and top cartridge fuse and bottom cartridge fuse parcel at Kou, form insulation protection, it is to avoid power-off is the most thorough.Bottom is melted
The striker that fiber tube is carried will puncture diaphragm seal, make the upper and lower locking device of the disposable fusion tube that fuse used thread off, fusion tube
It is ejected.
Claims (1)
1. lead-out wire and a upper locking fuse in major diameter, including insulating ceramic and be arranged at the axial of described insulating ceramic
The cartridge fuse of interior intracavity, it is characterised in that: the top of described insulating ceramic is provided with locking device；Described cartridge fuse includes top
Cartridge fuse, middle part cartridge fuse and bottom cartridge fuse, the binding post of fuse and bottom cartridge fuse fix and pass top cartridge fuse by
Described locking device is fixed on the upper end of insulating ceramic；Described fuse has, in the part of middle part cartridge fuse, the fusing that diameter is less
Portion, the two ends of described fuse part are provided with outside the fuse between flash hider, described flash hider and top cartridge fuse and bottom cartridge fuse
Portion is cased with pyrocondensation insulating barrier；In axial bore between described top cartridge fuse, bottom cartridge fuse, spring is set；Described bottom fuse
Between the spacing preiection of pipe and insulating ceramic, conducting ring is set；Conducting ring is connected with lower lead-out wire；The bottom of bottom cartridge fuse is fixed
There is impact head；The bottom of the axial bore of described insulating ceramic arranges closure；Described locking device includes being fixed on insulation porcelain
Chuck in body top groove, is threaded outside described chuck, and centre arranges wedge shape through hole；The lead-out wire of top cartridge fuse is worn
Cross described wedge shape through hole；Arranging binding nut outside described chuck, the internal diameter of described binding nut is less than outside chuck exterior bottom
Footpath and more than the external diameter on chuck top to ensure screwing along with binding nut, lead-out wire is clamped and fixes by wedge shape through hole；Institute
State the diameter of upper lead-out wire of fuse more than the fuse diameter in the cartridge fuse of fuse top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610717478.5A CN106128900A (en) | 2016-08-24 | 2016-08-24 | Lead-out wire and upper locking fuse in a kind of major diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610717478.5A CN106128900A (en) | 2016-08-24 | 2016-08-24 | Lead-out wire and upper locking fuse in a kind of major diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106128900A true CN106128900A (en) | 2016-11-16 |
Family
ID=57275015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610717478.5A Pending CN106128900A (en) | 2016-08-24 | 2016-08-24 | Lead-out wire and upper locking fuse in a kind of major diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106128900A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1936652A2 (en) * | 2006-12-20 | 2008-06-25 | Ferraz Shawmut | Protection fuse for electrical appliances |
| CN101685734A (en) * | 2008-09-26 | 2010-03-31 | 邱鸿智 | Explosion proof fuse with energy saving and environmental protection as well as manufacturing method thereof |
| CN202977349U (en) * | 2012-07-11 | 2013-06-05 | 日本能源服务株式会社 | Lower cone die for high-voltage fuse |
| CN103545154A (en) * | 2013-11-04 | 2014-01-29 | 国家电网公司 | Fuse protector |
| CN203659778U (en) * | 2013-12-10 | 2014-06-18 | 杭州国电电气设备有限公司 | Outdoor full insulation jet type fuse |
-
2016
- 2016-08-24 CN CN201610717478.5A patent/CN106128900A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1936652A2 (en) * | 2006-12-20 | 2008-06-25 | Ferraz Shawmut | Protection fuse for electrical appliances |
| CN101685734A (en) * | 2008-09-26 | 2010-03-31 | 邱鸿智 | Explosion proof fuse with energy saving and environmental protection as well as manufacturing method thereof |
| CN202977349U (en) * | 2012-07-11 | 2013-06-05 | 日本能源服务株式会社 | Lower cone die for high-voltage fuse |
| CN103545154A (en) * | 2013-11-04 | 2014-01-29 | 国家电网公司 | Fuse protector |
| CN203659778U (en) * | 2013-12-10 | 2014-06-18 | 杭州国电电气设备有限公司 | Outdoor full insulation jet type fuse |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |