CN108711544A - A kind of protected cut-out - Google Patents
A kind of protected cut-out Download PDFInfo
- Publication number
- CN108711544A CN108711544A CN201810549539.0A CN201810549539A CN108711544A CN 108711544 A CN108711544 A CN 108711544A CN 201810549539 A CN201810549539 A CN 201810549539A CN 108711544 A CN108711544 A CN 108711544A
- Authority
- CN
- China
- Prior art keywords
- fusion tube
- melt
- moving contact
- fuse
- cut
- 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.)
- Granted
Links
- 230000004927 fusion Effects 0.000 claims abstract description 101
- 239000000155 melt Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 24
- 230000003068 static effect Effects 0.000 claims description 21
- 229920002379 silicone rubber Polymers 0.000 claims description 7
- 229920007278 PPS GF40 Polymers 0.000 claims description 3
- 229920006917 PPS-GF40 Polymers 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 229910052573 porcelain Inorganic materials 0.000 description 7
- 238000010891 electric arc Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000007799 cork Substances 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
- 230000006735 deficit Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
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
- H01H85/38—Means for extinguishing or suppressing arc
-
- 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
- H01H85/0078—Security-related arrangements
-
- 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
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
-
- 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
- H01H85/165—Casings
- H01H85/17—Casings characterised by the casing material
-
- 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
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
- H01H85/2045—Mounting means or insulating parts of the base, e.g. covers, casings
-
- 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
- H01H85/43—Means for exhausting or absorbing gases liberated by fusing arc, or for ventilating excess pressure generated by heating
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Fuses (AREA)
Abstract
The present invention provides a kind of protected cut-outs, are related to fuse technologies field, solve the technical issues of keeping fusion tube internal pressure excessive when fuse existing in the prior art easily causes melt to cut-off since exhaust passage design is unreasonable and cause mechanical failure.The device includes fusion tube (10), it is internally provided with melt (12) in the fusion tube (10), wherein, circumferentially there is multiple rows of first row stomata (101) along the side wall of the fusion tube (10) in the lower part of the fusion tube (10), the upper end of the fusion tube (10) is connected with first moving contact (102) isometrical with the fusion tube (10), there is the conductive fixed plate (105) being fastenedly connected with the melt inside first moving contact (102), wherein, on the conductive fixed plate (105) multiple second row stomatas (104) are provided centrally with around it.When the present invention is used under severe environmental conditions, operational process is more reliable and more stable.
Description
Technical field
The present invention relates to fuse technologies fields, more particularly, to a kind of protected cut-out.
Background technology
Fuse (fuse) refers to so that melt is fused when electric current is more than specified value with the heat that itself is generated, disconnecting electricity
A kind of electric appliance on road.Fuse be according to electric current be more than specified value for a period of time after, keep melt molten with heat of its own generation
Change, to make circuit disconnect, with a kind of current protector made of this principle.Fuse is widely used in high and low voltage electric distribution
It is to apply most common protection device as the protector of short circuit and overcurrent in system and control system and electrical equipment
One of.In normal work, fuse makes the movable part on fusion tube lock, therefore fusion tube can be under the pressure of upper contact head in combined floodgate
State.When fuse failure, electric arc is generated in fusion tube, the expulsion tube of fusion tube liner decomposites a large amount of gas under arcing
Body, in current over-zero, generation is strong removes liberation and extinguishes electric arc, due to fuse failure, then in the bullet of upper and lower contact
Apparent overlap span is formed under power and Gravitative Loads.Widely used product has fuse switch and closing on the market at present
Formula fuse, but both common fuses easily occur in and fall, coagulate under severe environmental conditions in the process of running
Situations such as dew phenomenon, statelessly lower fuse failure and onsite application explode.
Applicants have discovered that at least there is also following technical problems for fuse in the prior art：1, existing closed molten
For disconnected device since external material is ceramic material, easily there is showing for condensation in use due to its material speciality in ceramic material
As leading to product accident occur, this is also one of the main reason for accident constantly occurs for existing product on the market；2, make on the market
With the interiors of products structural material multiselect epoxy fibreglass cloth with operation, main material is glass fibre, is had preferable
Heat resistance, but do not have flame-retarding characteristic, carburizing reagent can occur under high temperature environment, amount of heat is distributed in fuse failure
When can become combustible, lead to the generation of fusion tube explosion accident；And the hydrophily of epoxy fibreglass cloth can then be sent out in dew condensation phenomenon
Raw, when humid environment, reduces its insulation performance；3, existing protected cut-out is since product structure design is usually that fuse is molten
After disconnected, the fusion tube inside fuse is set to be exited from outer sleeve using the pretightning force of spring, during it is exited, production
Product can not be moved back because by friction effects caused by its weight and top connector pressure, exiting incomplete or fusion tube
Go out outer sleeve, causes fracture distance after completing to fuse inadequate, generation product accident；4, existing protected cut-out is set
In meter, the assembly of fuse and insulating bar conducting position uses screw thread fashion of extrusion, this mode although to facilitate worker and grasp
Make, but in equipment running process, easy to produce electromagnetic induction, causes thread looseness, and nothing prevents the automatic loopback of equipment
Measure makes its virtual connection, to which the fuse failure accident under stateless case occur；5, existing protected cut-out is in contact part
The design divided uses riveting process, and product is also easy to produce loosening during longtime running, makes equipment virtual connection, to occur
Fuse failure accident under stateless case；6, since existing protected cut-out porcelain vase outer tubular sleeve is porcelain, cable
Coupling part is generally connected using adhesion process, easily colloid aging phenomenon is occurred within 1 year or so in the presence of a harsh environment, is needed to carry out
It replaces；It can not play the role of dustproof and waterproof to inside, and colloid aging phenomenon is not easy to be found, its operation is made thing occur
Therefore；7, existing protected cut-out porcelain vase external structure casing is porcelain, and domestic prior art level is not submitting cost
In the case of, porcelain vase dimensional discrepancy is larger, and since porcelain vase size can not ensure, this results in the size that two batches product can occur
The problem of having differences, causing same type product that can not replace occurs；8, existing protected cut-out is ten in maintenance process
Point inconvenience, maintenance personal need away from the high product operating lever of ground logarithm rice to the card slot of high-altitude diameter about 30mm into
The dismantlement work of row alignment, rotation, operation difficulty is big, and construction is cumbersome.9, existing protected cut-out is not due to apparent
Distinguishing identifier causes to be unable to judge accurately the equipment to fuse when single-phase fusing, is unfavorable for overhauling.10, make on the market at present
Be mostly simple single-ended exhaust structure with the product with operation, and its exhaust passage position be often much larger than product cut-off away from
From being normally at the positive lower end of product, when internal gas exhausted material heat is volatilized into gas, easily lead to fusion tube internal pressure mistake
Greatly by mechanical damage.
Invention content
Based on above-mentioned technical problem, the first object of the present invention is to provide a kind of novel protected cut-out, with solution
Fuse certainly existing in the prior art makes pressure inside fusion tube when easily melt being caused to cut-off since exhaust passage design is unreasonable
It is strong excessive and the technical issues of cause mechanical failure.Optimal technical scheme in many technical solutions provided by the invention can produce
Raw many technique effects elaboration as detailed below.
To achieve the above object, the present invention provides following technical schemes：
A kind of protected cut-out provided by the invention, the fuse include at least fusion tube, are set inside the fusion tube
It is equipped with melt, wherein circumferentially there is multiple rows of first row stomata along the side wall of the fusion tube in the lower part of the fusion tube, it is described molten
The upper end of pipe is connected with the first moving contact, has the conduction being fastenedly connected with the melt fixed inside first moving contact
Plate, wherein be provided centrally with multiple second row stomatas around it in the conductive fixed plate.
A preferred embodiment of the invention, multiple rows of first row stomata are disposed adjacently in the fusion tube
The position of middle part on the lower is provided with the second moving contact for making melt be connect with lower wire end in the bottom of the fusion tube,
In, multiple rows of first row stomata is arranged in the top of second moving contact of the fusion tube, and second moving contact does not hide
Keep off the first row stomata.
A preferred embodiment of the invention, the fuse further include the bottom being arranged in the fusion tube bottom
The bottom of disk, the fusion tube is fastened to the chassis, the bottom end on the chassis is provided with torque spring, wherein the torsion
Wherein one end of spring is connected with the bottom of melt.
A preferred embodiment of the invention is provided with the bottom for fixing torque spring on the chassis
Seat, wherein at the center on the chassis there is through-hole, the through-hole to be interconnected with inside fusion tube, the one of the torque spring
End is connected by connecting line and through the through-hole with the melt inside fusion tube.
A preferred embodiment of the invention is provided with gas exhausted material layer in the inner surface of the fusion tube, described
Gas exhausted material layer is made of the volatile material of high temperature.
A preferred embodiment of the invention is arranged with melt connector, the melt in the upper end of the melt
Nipple tip is fastenedly connected by fastening bolt and the conductive fixed plate of the first moving contact.
A preferred embodiment of the invention is provided with the first static contact in the upper end of first moving contact,
The bottom of first static contact circumferentially has multiple shrapnels abutted against with first moving contact along it.
A preferred embodiment of the invention, the fuse further include abutting against setting with the second moving contact
Second static contact, the top of second static contact circumferentially have along it is multiple can be with second moving contact to the bullet abutted
Piece.
A preferred embodiment of the invention, the fuse further include the shell for surrounding the fusion tube setting,
Wherein, the shell is formed using PPS-GF40 material preparations.
A preferred embodiment of the invention, the fuse further include being located at the outermost umbrella of the fuse
Set, wherein the umbrella cover is made using silicon rubber, is respectively provided in the upper and lower side of the umbrella cover and is connect with inside fusion tube
Upper leading-out terminal and lower wire end.
Based on the above-mentioned technical proposal, technique effect caused by the embodiment of the present invention is as follows：
A kind of protected cut-out provided by the invention includes at least fusion tube, melt is internally provided in the fusion tube,
In, circumferentially there are multiple rows of first row stomata, the upper end of the fusion tube to connect along the side wall of the fusion tube in the lower part of the fusion tube
It is connected to first moving contact isometrical with the fusion tube, has inside first moving contact and is led with what the melt was fastenedly connected
Electric fixed plate, wherein be provided centrally with multiple second row stomatas around it in the conductive fixed plate.Therefore, of the invention
Fuse uses both ends exhaust structure, due to circumferentially having multiple rows of first row stomata along its side wall in the lower part of fusion tube,
When cut-offfing glitch electric current, can be exhausted by first row stomata；Its center is surrounded inside the first moving contact simultaneously
Provided with second row stomata so that form hollow closing in melt upper end, when cut-offfing big short circuit current, be located at the first moving contact
Internal second row stomata is formed exhaust outlet by larger pressure, to realize that both ends are vented.So as to when melt fuses as early as possible
Overpressure is reduced, prevents when cut-offfing big short circuit current fusion tube by mechanical failure.In addition, due to multiple rows of first row of the present invention
Stomata, which is arranged, is more nearly the position that melt break-make generates electric arc in the lower part of fusion tube, can also further protect fusion tube.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the sectional view of the protected cut-out of the present invention；
Fig. 2 be the present invention protected cut-out in fusion tube structural schematic diagram；
Fig. 3 be the present invention protected cut-out in the first contact connection structure schematic diagram on fusion tube；
Fig. 4 be the present invention protected cut-out in conductive fixed plate on the first moving contact structural schematic diagram；
Fig. 5 be the present invention protected cut-out in chassis upward view；
Fig. 6 be the present invention protected cut-out in fusion tube and the first moving contact structural schematic diagram.
In figure：10- fusion tubes；The chassis 11-；12- melts；13- umbrella covers；14- shells；The upper leading-out terminals of 15-；Outlet under 16-
End；17- support devices；101- first row stomatas；The first moving contacts of 102-；103- fills hole；104- second row stomatas；105- is led
Electric fixed plate；The second moving contacts of 106-；107- melt connectors；The first static contacts of 108-；108 '-the second static contacts；109- is fastened
Bolt；110- stops portion；111- torque springs；112- connecting lines；113- installs card slot；114- through-holes.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, technical scheme of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
The present invention provides a kind of protected cut-outs, include at least fusion tube 10, melt 12 is internally provided in fusion tube 10,
Wherein, circumferentially there are multiple rows of first row stomata 101, the upper end connection of fusion tube 10 along the side wall of fusion tube 10 in the lower part of fusion tube 10
There is the first moving contact 102, there is the conductive fixed plate 105 being fastenedly connected with melt inside the first moving contact 102, wherein
In conductive fixed plate 105 multiple second row stomatas 104 are provided centrally with around it.Therefore the fuse of the present invention uses both ends
Exhaust structure designs, since multiple second row stomatas 104 surround the centrally disposed of conductive fixed plate 105, cut-offfing small event
Certain obstruction can be encountered when flowing up by hindering the gas generated when electric current, therefore generated gas is easier from positioned at molten
The first row stomata of pipe side wall is discharged, and when cut-offfing big short circuit current, the first row stomata for being located at upper end also can be by larger
Pressure, to realize that both ends are vented when encountering big short circuit current, reduces in pipe as early as possible to can also form exhaust outlet
Pressure prevents when cut-offfing big short circuit current fusion tube by mechanical damage.Moreover, if fusion tube length is long, internal narrow
Long is the immediate cause for causing fusion tube inside fuse that mechanical failure occurs, and the present invention is using both ends due to being vented, and
First row stomata is arranged in the bottom sidewall of fusion tube, therefore can not only ensure the cut-off distance of fuse, also lower end is made to arrange
Gas channel position is improved, and so that it is fused closer to melt and is generated the position of electric arc, and the internal gas generated is made to be discharged as early as possible,
Protect internal fusion tube.
Referring to Figures 1 and 2, Fig. 1 is the sectional view of the protected cut-out of the present invention；Fig. 2 shows the closings of the present invention
The structural schematic diagram of fusion tube in formula fuse.Preferably, multiple rows of first row stomata 101 is disposed adjacently leans at the middle part of fusion tube 10
Under position.The bottom of fusion tube 10 is provided with the second moving contact 106 for making melt 12 be connect with lower wire end.Wherein,
Multiple rows of first row stomata 101 is arranged in the top of the second moving contact 106 of fusion tube 10, and the second moving contact 106 does not block first row
Stomata 101.To which the second moving contact 106 will not stop the discharge of gas.It is leaned at the middle part of fusion tube moreover, first row stomata is arranged
Under position can ensure the position of cut-offfing of melt, and first exhaust hole can be made to be more nearly melt fusing and generate electric arc
Position so that gas is discharged faster, plays the role of protecting fusion tube.
With reference to Fig. 2 and Fig. 5, Fig. 5 be the present invention protected cut-out in chassis upward view.Fuse further includes setting
Chassis 11 in 10 bottom of fusion tube.Chassis 11 is for being fixed fusion tube 10.The bottom of fusion tube 10 is fastened to chassis 11.
The bottom end on chassis 10 is provided with torque spring 111.Wherein, wherein one end of torque spring 111 is connected with the bottom of melt 12
It connects.Preferably, the pedestal for fixing torque spring 111 is provided on chassis 11.Wherein, have at the center on chassis 11 logical
Hole 114.The through-hole 114 is interconnected with 10 inside of fusion tube.One end of torque spring 111 by connecting line 112 and via through holes with
Melt 12 inside fusion tube 10 is connected.So set, when fuse or melt fuse, and need to melt in the prior art
The design method that pipe is integrally exited from casing is compared, and the present invention can pass through torque spring after fuse or melt fusing
Pulling force effect so that fuse or melt is detached from fusion tube, it is easier to make the fuse of disconnection that fusion tube be discharged, avoid fusion tube exit it is endless
Electric appliance accident caused by complete, avoids and is damaged to internal structure.
Preferably, the inner surface of fusion tube 10 is provided with gas exhausted material layer, gas exhausted material layer is the volatile material of high temperature
It is made.When fuse or melt fuse, internal material volatilization aerogenesis so that pipe is inside and outside to generate pressure difference, the fuse to will be switched off
It is discharged inside fusion tube, under the effect of the dual power-assisted of torque spring and gas exhausted material, the fusing operation of fuse is more reliable.
Preferably, the through-hole 114 on chassis 11 be internally provided with can its warning and mark action protective plug (in figure not
Show), which can be cork, have the through-hole that can pass through melt 12 among it, to which protective plug can be across molten
Body is mounted in through-hole 114.Protective plug could be provided as the red with warning and marking effect, to fuse in fuse
When, melt can drive protective plug to be detached from chassis and hang, and patrol officer can find in time.Meanwhile being arranged in through-hole
114 protective plugs gone out also have dustproof and waterproof effect, avoid internal fusion tube from intaking, extend the service life of product.
Preferably, it is additionally provided with for by the mutually fixed installation card slot of chassis 11 and umbrella cover 113 in the bottom on chassis 11.It can
Chassis is directly fixed to umbrella cover using three-jaw operating lever.It is easy for installation and maintenance.Preferably, the bottom on chassis 11 is also
It is fixed with hanging ring (not shown), chassis is opened by hanging ring when dismantling fusion tube and is dismantled, it is easy for installation.It is excellent
Selection of land, those skilled in the art can need to be improved the color and luster on chassis according to different, such as may be used three kinds not
Chassis is molded with color, the chassis to form three kinds of different colours can there will be different colours bottom when in use
The fuse of disk respectively installed by the corresponding three-phase for installing circuit, so that in fuse failure, patrol officer differentiates hair easily
Make trouble thus specific split-phase.
With reference to Fig. 3, Fig. 4 and Fig. 6, Fig. 3 be the present invention protected cut-out in the first moving contact connection knot on fusion tube
Structure schematic diagram；Fig. 4 shows the structural schematic diagram of the conductive fixed plate on the first moving contact in protected cut-out of the invention；
Fig. 6 shows the structural schematic diagram between fusion tube and the first moving contact in protected cut-out of the invention.Wherein, conductive fixed
Plate 105 is the structure being arranged inside the first moving contact 102, can be and 102 integrally formed structure of the first moving contact.It is excellent
Choosing, conductive fixed plate 105 is disc-shaped structure.Its outermost edges and the inner wall edge of the first moving contact 102 fit.
Preferably, the center of conductive fixed plate 105 has mounting hole 103, for carrying out melt by fastener and the first moving contact
It is fixed.Second row stomata 104 is arranged around mounting hole 103.
Preferably, it is arranged with melt connector 107 in the upper end of melt 12.Preferably, melt structure 107 includes upper and lower two
Cyclotomy tubular construction.There is interconnected through-hole, the outer diameter of upper cylinder to be more than lower circle at the center of wherein upper cylinder and lower cylinder
The outer diameter of cylinder.107 top of melt connector is connected by fastening bolt 109 and the fastening of the conductive fixed plate 105 of the first moving contact 102
It connects.Coordinated by fastening bolt 109, it can be to avoid generation virtual connection situation.I.e. fastening bolt 109 is fixed to melt structure
In 107 upper cylinder；The lower part of melt connector 107, it is preferable that the lower cylinder of melt structure 107 is set in the top of melt 12
End.Since outside diameter of cylinder is more than lower outside diameter of cylinder on the melt structure 107, in exhaust process, especially glitch is electric
When stream exhaust, gas can encounter partial impairment, to make gas be discharged from the first row stomata of fusion tube side wall.Preferably, molten
Its internal diameter of position that the top of pipe 10 is contacted with the first moving contact 102 is less than the internal diameter of 10 ontology of fusion tube, in fusion tube 10
Have towards the boss inside fusion tube inside top, blocking further can be played to gas in glitch electric current exhaust process
Effect makes it be discharged from first row stomata.Preferably, its outer diameter of position that the top of fusion tube 10 is contacted with the first moving contact 102
Less than the outer diameter of fusion tube ontology, to form interior concave station, convenient for the mating connection with the first moving contact 102.
Referring to Figures 1 and 2, it is preferable that the upper end of the first moving contact 102 is provided with the first static contact 108.First stationary contact
First 108 bottom circumferentially has multiple shrapnels abutted against with the first moving contact 102 along it.Preferably, fuse further include with
Second moving contact 106 abuts against the second static contact 108 ' of setting.The top of second static contact 108 ' circumferentially has multiple along it
The shrapnel that can be abutted against with the second moving contact 106.Preferably, the first static contact 108 and the second static contact 108 ' are beryllium-bronze
Material.The present invention is designed using self-closing power contact.Preferably, the outer diameter of fusion tube 10 is more than the first static contact 108 and the second stationary contact
First 108 ' the cavity inside diameter surrounded by multiple shrapnels in a relaxed state so designs, quiet fusion tube 10 is inserted into first
When in contact 108 and the second static contact 108 ', it can cause the shrapnel of the first static contact and the second static contact that expansion deformation occurs, from
And influenced by shrapnel reaction force, increase conductive pressure, to increase through-current capacity.In the embodiment of the present invention contact part without
Riveting process is needed, in During Process of Long-term Operation, contact can ensure enough contacts, and since beryllium-bronze material is excellent
Property, can repeatedly carry out melt replace without deform, do not interfere with the operation of equipment.
Preferably, fuse further includes the shell 14 for surrounding fusion tube 10 and being arranged.Being provided in the bottom of shell 14 can hinder
The stop portion 110 for keeping off the shrapnel of second static contact 108 ' makes it have pressure contact with fusion tube lower part conduction.
Preferably, fuse further includes being located at the outermost umbrella cover of fuse 13.Wherein umbrella cover 13 uses silicone rubber material,
Consider from many aspects, silicone rubber material has the physical characteristic that heating rate is slow, heat absorptivity is poor, and special with excellent electricity
Property, the occurrence condition of dew condensation phenomenon on the one hand can be destroyed, while can ensure its complete electric property, it is molten to improve
Disconnected influence of the device exterior material to product.Internal layer shell is prepared using engineering plastics PPS-GF40, and chemical constitution is suitable
Stablize, and contain ignition-proof element sulphur, therefore there is excellent flame resistance, limit oxygen index is up to 44, when thickness is 0.8mm
Can be optimal level in 94 flammabilities of UL by UL-94V0 grades.And its be used for a long time temperature up to 200 degree,
It keeps stablizing in 400 degree of air or nitrogen.Therefore, in silicon rubber formula enclosed fuse, total is silicon rubber and work
Engineering plastics are seamless, and one-pass molding forms, and avoids the occurrence of and is connected using adhesion process using the umbrella cover and cable segment connector of porcelain
It is susceptible to the problem of colloid aging often needs replacing.The silicon rubber formula enclosed fuse that the present invention uses, worst error are situated between
Between 0.1%-0.3%, ensure that the size of each batch fuse, there is no too big differences, while ensure that fuse is transported
The serviceability rate of fuse during defeated.
Preferably, the upper leading-out terminal 15 being connect with internal fusion tube 10 and lower outlet are respectively provided in the upper and lower side of umbrella cover 13
End 16.Preferably, the fusion tube bottom of fuse is provided with support device 17, the bottom of the second static contact 108 ' is supported to support
The top of device 17.The bottom of support device 17 is arranged on chassis 11.For the ease of the installation and replacement of fusion tube, support dress
The upper end opening for setting 17 is set as the diminishing mode of bottom-up internal diameter, therefore, at the upper end opening of support device 17
Form guiding mechanism 171.
The protected cut-out of the present invention is from the inside and outside material of product and the exhaust structure and electric appliance of fuse
Structure is improved, its performance is made to have obtained the promotion of matter, more reliable and more stable in the process of running.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of protected cut-out, which is characterized in that the fuse includes at least fusion tube (10), in the fusion tube (10)
Portion is provided with melt (12), wherein circumferentially has along the side wall of the fusion tube (10) in the lower part of the fusion tube (10) multiple rows of
The upper end of first row stomata (101), the fusion tube (10) is connected with the first moving contact (102), in first moving contact (102)
Inside has the conductive fixed plate (105) being fastenedly connected with the melt (12), wherein on the conductive fixed plate (105)
It is provided centrally with multiple second row stomatas (104) around it.
2. protected cut-out according to claim 1, which is characterized in that multiple rows of first row stomata (101) is adjacent
The position at the middle part of the fusion tube (10) on the lower is arranged in ground, is provided in the bottom of the fusion tube (10) for making melt (12)
The second moving contact (106) being connect with lower wire end, wherein multiple rows of first row stomata (101) is arranged in the fusion tube
(10) top of second moving contact (106), second moving contact (106) do not block the first row stomata (101).
3. protected cut-out according to claim 1, which is characterized in that the fuse further includes setting described molten
The chassis (11) of (10) bottom is managed, the bottom of the fusion tube (10) is fastened to the chassis (11), the bottom in the chassis (11)
End is provided with torque spring (111), wherein wherein one end of the torque spring (111) is connected with the bottom of melt (12).
4. protected cut-out according to claim 3, which is characterized in that be provided on the chassis (11) for solid
Determine the pedestal of torque spring (111), wherein the chassis (11) center have through-hole (114), the through-hole (114) with
It is interconnected inside fusion tube (10), one end of the torque spring (111) is by connecting line (112) and through the through-hole (114)
It is connected with positioned at the internal melt (12) of fusion tube (10).
5. protected cut-out according to claim 3, which is characterized in that be provided in the inner surface of the fusion tube (10)
Gas exhausted material layer, the gas exhausted material layer are made of the volatile material of high temperature.
6. protected cut-out according to claim 1, which is characterized in that be arranged in the upper end of the melt (12) molten
Body connector (107), melt connector (107) top are fixed by the conduction of fastening bolt (109) and the first moving contact (102)
Plate (105) is fastenedly connected.
7. protected cut-out according to claim 6, which is characterized in that in the upper end of first moving contact (102)
It is provided with the first static contact (108), circumferentially there is multiple moved with described first to touch along it for the bottom of first static contact (108)
The shrapnel that head (102) abuts against.
8. protected cut-out according to claim 7, which is characterized in that the fuse further includes and the second moving contact
(106) the second static contact (108 ') of setting is abutted against, the top of second static contact (108 ') is circumferential with multiple along it
It can be with second moving contact (106) to the shrapnel abutted.
9. the protected cut-out according to one of preceding claims 1 to 8, which is characterized in that the fuse further includes
Surround the shell (14) of the fusion tube (10) setting, wherein the shell (14) is formed using PPS-GF40 material preparations.
10. the protected cut-out according to one of preceding claims 1 to 8, which is characterized in that the fuse further includes
Positioned at the outermost umbrella cover of the fuse (13), wherein the umbrella cover is made using silicon rubber, in the umbrella cover (13)
Upper and lower side be respectively provided with the upper leading-out terminal (15) being connect with internal fusion tube (10) and lower wire end (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549539.0A CN108711544B (en) | 2018-05-31 | 2018-05-31 | Enclosed fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549539.0A CN108711544B (en) | 2018-05-31 | 2018-05-31 | Enclosed fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108711544A true CN108711544A (en) | 2018-10-26 |
| CN108711544B CN108711544B (en) | 2024-08-23 |
Family
ID=63870249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810549539.0A Active CN108711544B (en) | 2018-05-31 | 2018-05-31 | Enclosed fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108711544B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109524281A (en) * | 2019-01-08 | 2019-03-26 | 北京博瑞莱智能科技周口有限公司 | A kind of compound insulation type fuse |
| CN111952134A (en) * | 2020-07-28 | 2020-11-17 | 湖南特诚成套电器有限公司 | Self-alarming injection type high-voltage fuse |
| CN112216576A (en) * | 2019-07-09 | 2021-01-12 | 平高集团有限公司 | Fuse-arrester high-voltage combined structure, fuse and power distribution and transformation system |
| CN112397359A (en) * | 2020-11-04 | 2021-02-23 | 国网新疆电力有限公司乌鲁木齐供电公司 | Fuse auto-lock installation device for voltage transformer protection |
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| CN112216576A (en) * | 2019-07-09 | 2021-01-12 | 平高集团有限公司 | Fuse-arrester high-voltage combined structure, fuse and power distribution and transformation system |
| CN111952134A (en) * | 2020-07-28 | 2020-11-17 | 湖南特诚成套电器有限公司 | Self-alarming injection type high-voltage fuse |
| CN112397359A (en) * | 2020-11-04 | 2021-02-23 | 国网新疆电力有限公司乌鲁木齐供电公司 | Fuse auto-lock installation device for voltage transformer protection |
| CN112397359B (en) * | 2020-11-04 | 2024-05-14 | 国网新疆电力有限公司乌鲁木齐供电公司 | Fuse self-locking installation device for protecting voltage transformer |
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| CN108711544B (en) | 2024-08-23 |
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