CN201698976U - Fuse barrel for high-voltage fuse - Google Patents
Fuse barrel for high-voltage fuse Download PDFInfo
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- CN201698976U CN201698976U CN2010201359343U CN201020135934U CN201698976U CN 201698976 U CN201698976 U CN 201698976U CN 2010201359343 U CN2010201359343 U CN 2010201359343U CN 201020135934 U CN201020135934 U CN 201020135934U CN 201698976 U CN201698976 U CN 201698976U
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Abstract
The utility model relates to a fuse barrel for a high-voltage fuse. The upper end and the lower end of an insulating barrel are respectively provided with an upper electrode and a middle electrode, the periphery in the center of the insulating barrel is provided with a lower electrode, the insulating barrel is filled with an arc extinguishing member when inserted with an insulating core, the upper electrode and the middle electrode are connected by a fuse element wound on the insulating core in the insulating barrel, and the middle electrode and the lower electrode are connected by a conductor member arranged along the periphery of the insulating barrel. Thereby, without replacing the original high-voltage fuse, the insulating capacity (rated current capacity) of the fuse barrel can be improved. Therefore, the fuse barrel can be suitable for the capacity expansion of distribution lines.
Description
Technical field
The utility model relates to a kind of high-tension fuse that is installed on high-tension fuse fuse tube.
Background technology
In the past, known promising protection power distribution transformer was provided with, took in the high-tension fuse (for example, referring to utility model document 1) of the fuse tube of emitting shape in porcelain system main body insulator.
The utility model document 1:ZL patent No. 200820116158.5
In recent years, along with the high capacity of distribution line, need to improve the breaking capacity (rated current capacity) of original high-tension fuse.
In above-mentioned utility model document 1, in the structure of the existing fuse tube of emitting shape of record,, can cause the maximization of fuse tube, thereby can not be inserted in original high-tension fuse if improve breaking capacity (rated current capacity).
Therefore, in the time of improving breaking capacity (rated current capacity), just be necessary to change high-tension fuse.
The utility model content
The utility model is made in view of such actual conditions just, and its purpose is to provide a kind of need not change the fuse tube that original high-tension fuse just can improve breaking capacity (rated current capacity).
In order to achieve the above object, the utility model provides a kind of high-tension fuse that is installed on high-tension fuse fuse tube, two ends up and down at insulating cylinder are respectively equipped with upper electrode and target, central portion periphery at insulating cylinder is provided with lower electrode, follow insulating core in the insulating cylinder interpolation, simultaneously, be filled with the arc extinguishing member, with upper electrode being connected with target, target is connected with lower electrode by conductor component along the insulating cylinder periphery by the electrical fuse element that is wound in the insulating cylinder on the insulating core.
The utility model also provides a kind of high-tension fuse that is installed on high-tension fuse fuse tube, top and bottom at insulating cylinder are formed with minor diameter part and large-diameter portion respectively, when the upper end of minor diameter part is provided with upper electrode, periphery is provided with lower electrode in the bottom, the insulating core of in large-diameter portion, pegging graft target and internal electrode being installed, in minor diameter part and in the large-diameter portion, be filled with the arc extinguishing member, electrical fuse element is formed by first electrical fuse element and second electrical fuse element, by with first electrical fuse element upper electrode being connected with internal electrode in the minor diameter part, by with second electrical fuse element internal electrode being connected with target in the large-diameter portion, target is connected with lower electrode by conductor component along the insulating cylinder periphery.
Utilize the utility model, owing to need not change the breaking capacity (rated current capacity) that original high-tension fuse just can improve the fuse tube, so high capacity that can corresponding distribution line.
Description of drawings
Fig. 1 is the cutaway view of high-tension fuse that possesses the fuse tube of first execution mode;
Fig. 2 is the stereogram of the fuse tube of first execution mode;
Fig. 3 is the cutaway view of the fuse tube of first execution mode;
Fig. 4 is the part detailed section view of the fuse tube of first execution mode;
Fig. 5 is the cutaway view of the high-tension fuse that possesses the fuse tube of second execution mode;
Fig. 6 is the cutaway view of the fuse tube of second execution mode;
Fig. 7 is the front view that is fixed on the insulating core in the fuse tube of second execution mode.
Label declaration:
1 high-tension fuse 1a main body insulator
5 upper mould are bored 7 top fixed electrodes
8 arc extinguishings rod, 10 bottom fixed electrode frames
11 bottom fixed electrodes, 12 lower die awl
14 arc extinguishing tubes, 19 fuse tubes
20 insulating cylinders, 21 minor diameter parts
22 large-diameter portions, 23 tapering portions
24 upper electrodes, 26 lower electrodes
27 insulating cores, 28 internal electrodes
32 targets, 38 conductive plates
39 display barrels, 40 display bars
41 electrical fuse element 41a, first electrical fuse element
41b second electrical fuse element 44 resistive conductors
46 protective sleeves
Embodiment
[first execution mode]
Below, describe with regard to first execution mode of the present utility model with reference to Fig. 1～Fig. 4.
As shown in Figure 1, the porcelain system main body insulator 1a of high-tension fuse 1 forms cylindric, is formed with from the upper end to the path hole 2 of bottom in the inside of main body insulator 1a.
Be formed with disconnected sloping portion 3 in the bottom in path hole 2, be formed with wide diameter portion 4 continuously in the bottom of disconnected sloping portion 3.
In the upper end open portion of main body insulator 1a, insert the logical cone shape upper mould awl 5 that is equipped with, insert in the inside of upper mould awl 5 and be connected with upper port outlet 6.
The external cable of distribution line is connected the outer end of the upper port outlet 6 of upper mould awl 5.
Be connected with top fixed electrode 7 in the inner of upper port outlet 6, be hung with the arc extinguishing rod 8 that constitutes by arc quenching materials such as polyacetals by spring 9 in the inner of top fixed electrode 7.
On the wide diameter portion 4 of main body insulator 1a, rabbeting bottom fixed electrode frame 10, so that it is limited to disconnected sloping portion 3.
Upper end at bottom fixed electrode frame 10 is fixed with bottom fixed electrode 11, and bottom fixed electrode 11 is made of ring electrode support plate 11a and the bottom contact 11b that is fixed on the electrode support plate 11a.
In the lower side of main body insulator 1a, insert the logical cone shape lower die awl 12 that is equipped with, in the inside of lower die awl 12, insert and be connected with lower ports outlet 13.
Outer end at lower die awl 12 is connected with external cable, and external cable is connected on the machines such as transformer of being located at distribution line.
The inner of lower ports outlet 13 is connected on the electrode support plate 11a of bottom fixed electrode 11.
Be inserted with the arc extinguishing tube 14 that is made of arc quenching materials such as polyacetals cylindraceous of both ends open in the path hole 2 of main body insulator 1a, arc extinguishing tube 14 covers the medial surface in path hole 2.
The bottom of arc extinguishing tube 14 is supported on the buffer component 15 that is positioned on the bottom fixed electrode frame 10.
In addition, the upper end of arc extinguishing tube 14 reaches the below near top fixed electrode 7 always, so that the lower, outer perimeter of arc extinguishing rod 8 is surrounded.
In the lower ending opening portion of the wide diameter portion 4 of the main body insulator 1a lower cover 16 that has been adhesively fixed, the airtight bolt 17 that can freely load and unload with respect to lower cover 16 is installed at the peristome of lower cover 16.
The line 18 that connects airtight bolt 17 is installed on lower cover 16.
In main body insulator 1a, contain the current limliting shape fuse tube 19 that connects top fixed electrode 7 and bottom fixed electrode 11 with the form that runs through arc extinguishing tube 14.
As shown in Figures 2 and 3, fuse tube 19 is made of insulating cylinder 20 and the upper electrode 24 that is made of conductive member, top contact 25, lower electrode 26, insulating core 27, target 32, conductive plate 38, display barrel 39, display bar 40, electrical fuse element 41, arc extinguishing sand 45 and protective sleeve 46.
In fuse tube 19, be fixed with upper electrode 24 in the upper end open portion of the insulating cylinder 20 that forms tubular, on the top of upper electrode 24, top contact 25 has been threaded.
Central periphery at insulating cylinder 20 has lower electrode 26 by adhesive.
Be formed with the ring-type contact site 26a that contacts with bottom contact 11b on the lower electrode 26, be formed with cylindrical portion 26b in the bottom of contact site 26a.
Periphery at cylindrical portion 26b is formed with towards the outstanding a pair of engaging protrusion 26c of mutual rightabout.
Not giving illustrated existing hook stick can engage with engaging protrusion 26c, can carry out the loading and unloading of fuse tube 19 to high-tension fuse 1 by this hook stick.
Be provided with the 26d of screw portion at cylindrical portion 26b, be connected with the 26d of screw portion as an end of the conductive plate 38 of conductor component.
The other end of conductive plate 38 also is formed with ring-type target 32 when vertically end direction stretches out along the periphery of insulating cylinder 20 down.
The central part of insulating cylinder 20 inherent insulating cylinders 20 insulating core 27 of tubular along the axis direction plug-in mounting.
Periphery at insulating core 27 is wound with electrical fuse element 41, and the upper end of electrical fuse element 41 is connected with upper electrode 24, and the lower end is connected with target 32.
As shown in Figure 3 and Figure 4, electrical fuse element 41 is not formed with the silver dollar spare that two ends with this low melting metal portion are connected respectively by give illustrated low melting metal portion at central portion.
Low melting metal portion is covered by the arc-extinguishing tube 43 of formations such as fluororesin.
Be filled with arc extinguishing sand 45 between insulating cylinder 20 and insulating core 27 and in the insulating core 27 as the arc extinguishing member.
Be formed with flange part 39a in the outer end of display barrel 39, its protected cover 46 is crimped on the outside of target 32.
Take in the display bar 40 as display member in display barrel 39, display bar 40 can be outstanding from the through hole 46a that is formed at protective sleeve 46 bottom surface central authorities.
As shown in Figure 4, be formed with the flange part 40a that can end with through hole 46a circumference inner face card in the base end part periphery of display bar 40, the spring 40c that display bar 40 is ejected is installed between the teat 40b all in the inner end of flange part 40a and display barrel 39.
Hang to be ended in the middle of the resistive conductor 44 at a pair of extension that is formed at display barrel 39 inner ends and being ended after extension among the 39b of portion, the 39c ends on the 39b of portion, insert the inner end of logical display bar 40 and hung to end hanging and end on the 39c of portion.
The other end of resistive conductor 44 ends on the fastener 39d of display barrel 39 by card and is connected with target 32.
That is, fuse tube 19 forms circuit by the order of top contact 25 → upper electrode 24 → electrical fuse element 41 → target 32 → conductive plate 38 → lower electrode 26.
In addition, press the order formation circuit of upper electrode 24 → resistive conductor 44 → target 32; Resistive conductor 44 is connected side by side with electrical fuse element 41.
The fuse tube 19 as constituted above, and under the state in being inserted into main body insulator 1a, top contact 25 is clamped between top fixed electrode 7 and the arc extinguishing rod 8, and simultaneously, lower electrode 26 is held in the bottom contact 11b of bottom fixed electrode 11.
That is, top contact 25 can contact with top fixed electrode 7 with switching on, and simultaneously, lower electrode 26 can contact with bottom fixed electrode 11 with switching on.
Therefore, under fuse tube 19 was accommodated in state among the main body insulator 1a, top fixed electrode 7 was electrically connected by fuse tube 19 with bottom fixed electrode 11.
Then, result from the big electric current of short circuit etc. if flow into, electrical fuse element 41 arcing that will fuse forms caterpillar form height resistive element with arc extinguishing sand 45, comes the current limliting blocking by the high resistance body.
Because resistive conductor 44 is fused, the display bar 40 of display barrel 39 is outstanding from protective sleeve 46 by energizing of spring 40c, and demonstration fuses.
On the other hand, when flowing into the little electric current of low ranges such as overload, do not give the illustrated low melting metal portion arcing that will fuse in the arc-extinguishing tube 43 of electrical fuse element 41, the heat during by the fusing arcing produces arc extinguishing gases from arc-extinguishing tube 43, comes arc extinguishing by arc extinguishing gases.
When electrical fuse element 41 was fused, resistive conductor 44 moments ground was fused, and is outstanding from protective sleeve 46 by the fusing of resistive conductor 44, and the display bar in the display barrel 39 40 is outstanding, thereby the demonstration that can fuse.
According to above-mentioned execution mode, can obtain following action effect.
(1) is respectively equipped with upper electrode 24 and target 32 at the two ends up and down of insulating cylinder 20, central portion periphery at insulating cylinder 20 is provided with lower electrode 26, when the insulating cylinder interpolation is followed insulating core 27, be filled with arc extinguishing sand 45 as the arc extinguishing member, by connecting upper electrode 24 and target 32 with the electrical fuse elements 41 that are wound on the insulating core 27 in the insulating cylinder 20, by along insulating cylinder 20 peripheries, as the conductive plate 38 of conductor component target 32 is connected with lower electrode 26.
Therefore, need not change original high-tension fuse and just can improve breaking capacity (rated current capacity).In addition, when electrical fuse element 41 fusing, because arc extinguishing is in insulating cylinder 20, so sound also can not produce fusing time the and flash of light etc.
(2) electrical fuse element 41 by the low melting metal portion of central portion setting with should be formed with the silver dollar spare that the two ends of low melting metal portion are connected respectively, low melting metal portion is covered by the arc-extinguishing tube 43 that is made of fluororesin etc.And, between insulating cylinder 20 and insulating core 27 and in the insulating core 27, be filled with arc extinguishing sand 45.
Therefore, no matter be that big electric current or little electric current can both interdict effectively.
(3) be provided with in the bottom of insulating cylinder 20 target 32 and the protective sleeve 46 that will cover as the conductive plate 38 of conductor component.
Therefore, when fuse tube 19 is installed in main body insulator 1a, owing to be positioned at 46 coverings of the protected cover in bottom of the target 32 and the conductive plate 38 of main body insulator 1a bottom, so can carry out installation exercise and field-strip safely.
In addition, after installation is in main body insulator 1a, owing in main body insulator 1a, only have protective sleeve 46 to expose, so be safe.
(4) on target 32, be provided with display barrel 39, in display barrel 39, take in when electrical fuse element 41 fusing outstanding from protective sleeve 46, as the display bar 40 of display member.
Therefore, the demonstration that can easily fuse.
In addition, because display bar 40 is outstanding from the bottom surface central authorities of protective sleeve 46, so can easily confirm blown state.
(5) periphery at lower electrode 26 is formed with a pair of engaging protrusion 26c.
Therefore, existing hook stick can be engaged with engaging protrusion 26c, can easily carry out the handling operation of fuse tube 19 by hook stick to high-tension fuse 1.
(6), the airtight bolt 17 that can freely load and unload with respect to lower cover 16 is installed at the peristome of lower cover 16 in the lower ending opening portion of the wide diameter portion 4 of the main body insulator 1a lower cover 16 that has been adhesively fixed.
Therefore, because charging part can not expose fully, so be very safe.
In addition, when can preventing main body insulator 1a internal fouling, can also be antitheft, explosion-proof, typhoon protection, weather proof and anti-dust etc.
[second execution mode]
Below, describe with regard to second execution mode of the present utility model with reference to Fig. 5～Fig. 7.
The high-tension fuse of this execution mode, at the insulating cylinder 20 of fuse tube 19 by minor diameter part 21 and large-diameter portion 22 and tapering portion 23 integrally formed parts, electrical fuse element 41 forms part by the first electrical fuse element 41a and the second electrical fuse element 41b, and the bottom part that upper end, the target that internal electrode 28 is packed in insulating core 27 is packed in insulating core 27 is different with first execution mode.
Below, be that the center describes with difference with first execution mode.
In addition, the high-tension fuse of second execution mode has the same formation of high-tension fuse with first execution mode shown in Figure 1.
As Fig. 5 and shown in Figure 6, the insulating cylinder 20 of current limliting shape fuse tube 19 is integrally formed by minor diameter part 21 and large-diameter portion 22 and tapering portion 23.
The bottom of lower electrode 26 and tapering portion 23 butts.
As Figure 6 and Figure 7, in the large-diameter portion 22 of insulating cylinder 20, insert the logical insulating core 27 of fixing tubular at central part along axis direction.
Sentence the form of cross section starriness at the outer peripheral face 6 of insulating core 27, dash forward to equal angles and establishing the prominent bar 27a that extends vertically.
Hooking sheet 29 is stuck close on the prominent bar 27a of insulating core 27.
And, be equipped with the circumference of electrode 28 internally bends to L shaped shape towards the top a plurality of snap-latch pieces 30.
Snap-latch piece 30 is crimped and inserts minor diameter part 21, passes through the inner peripheral surface butt of hooking sheet 29 and tapering portion 23 up to the last ora terminalis of insulating core 27.
And, be formed with the snapping sheet 35 in week in the large-diameter portion 22 that always reaches insulating cylinder 20 at the circumference of flange part 33.
In target 32, there is the bulge 36 of bottom tube-like to be arranged on the central authorities of flange part 33, more outstanding than insulating cylinder 20 towards the below.Inserting hole 37 is located at the inner bottom part of bulge 36 thoroughly.
On a snapping sheet 35a of target 32, be connected with an end of the conductive plate 38 that the otch 22a by large-diameter portion 22 lower ends imports from the outside.
The other end of conductive plate 38 stretches out with lower electrode 26 along the outer perimeter direction of insulating cylinder 20 and is connected.
Inside at bulge 36 outstanding in insulating core 27 is equipped with display barrel 39, and the illustrated spring that do not give with display bar 40 ejections is housed in the inside of display barrel 39.
The end of the first electrical fuse element 41a is connected with the upper electrode 24 of insulating cylinder 20; The other end passes through in the minor diameter part 21 and a snap-latch piece 30 snappings of internal electrode 28.
The first electrical fuse element 41a is formed by silver dollar spare, and forms the helical curve shape, to guarantee the needed length of rupturing capacity.
The periphery of the insulating core 27 of the second electrical fuse element 41b in large-diameter portion 22 is reeled and is formed the helical curve shape, to guarantee the needed length of rupturing capacity.
Snap-latch piece 30 snappings of the end of the second electrical fuse element 41b and internal electrode 28; A snapping sheet 35a snapping of the other end and target 32.
The central portion of the second electrical fuse element 41b is not formed with the silver dollar spare that two ends with this low melting metal portion are connected respectively by giving illustrated low melting metal portion.
Low melting metal portion is covered by the arc-extinguishing tube 43 that fluororesin etc. constitutes.
In the minor diameter part 21 of insulating cylinder 20, between large-diameter portion 22 and the insulating core 27 and in the insulating core 27, be filled with arc extinguishing sand 45 as the arc extinguishing member.
Leading to resistive conductor 44 in insulating core 27 interpolations, snap-latch piece 30 snappings of an end of resistive conductor 44 and internal electrode 28.
When the other end of resistive conductor 44 is inserted the display bar lead in display barrel 39 40, be connected with target 32.At this moment, display bar 40 resistances are not given illustrated spring and are incorporated in the display barrel 39.
The large-diameter portion 22 of insulating cylinder 20 is being pressed outside at target 32 by protective sleeve 46.
That is, this fuse tube 19 is pressed the order formation circuit of upper electrode 24 → the first electrical fuse element 41a → internal electrodes 28 → the second electrical fuse element 41b → targets 32 → conductive plate 38 → lower electrode 26.In addition, press the order formation circuit of internal electrode 28 → resistive conductor 44 → target 32.Resistive conductor 44 is connected side by side with the second electrical fuse element 41b.
The large-diameter portion 22 protected covers 46 of insulating cylinder 20 are being pressed the outside at target 32.Protective sleeve 46 is being fixed by epoxyn with the large-diameter portion 22 of insulating cylinder 20 waterproofly.
In the bottom of protective sleeve 46 central authorities, be formed be used for the bulge 36 chimeric shapes of target 32 the protuberance 47 taken in.
In the periphery of the protuberance 47 of protective sleeve 46, prominent establishing towards the outstanding a pair of engaging protrusion 48 of mutual rightabout.
Not giving illustrated existing hook stick can engage with engaging protrusion 48.Can carry out the loading and unloading of fuse tube 19 to high-tension fuse 1 by hook stick.
In the bottom surface central authorities of the protuberance 47 of protective sleeve 46, establishing the through hole 49 that the display bar 40 of display barrel 39 is outstanding thoroughly.
Under fuse tube 19 as constituted above was inserted into state in the main body insulator 1a, when top contact 25 was clamped between top fixed electrode 7 and the arc extinguishing rod 8, lower electrode 26 was held in the bottom contact 11b of bottom fixed electrode 11.
In addition, the minor diameter part 21 of insulating cylinder 20 is by when intercalation is in arc extinguishing tube 14, the large-diameter portion 22 of insulating cylinder 20 by intercalation in the wide diameter portion 4 of main body insulator 1a.
Then, result from the big electric current of short circuit etc. if flow into, the first electrical fuse element 41a, the second electrical fuse element 41b arcing that will fuse forms caterpillar form height resistive element with arc extinguishing sand 45, comes the current limliting blocking by the high resistance body.When the second electrical fuse element 41b was fused, the two ends of resistive conductor 44 also were applied in voltage and since voltage and moment ground fused.
Because resistive conductor 44 is fused, the display bar 40 of display barrel 39 is not given prominence to by giving energizing of illustrated spring, and demonstration fuses.
On the other hand, when flowing into the little electric current of low ranges such as overload, do not give the illustrated low melting metal portion arcing that can fuse in the arc-extinguishing tube 43 of the second electrical fuse element 41b, the heat during by the fusing arcing produces arc extinguishing gases from arc-extinguishing tube 43, comes arc extinguishing by arc extinguishing gases.
When the second electrical fuse element 41b was fused, resistive conductor 44 moments ground was fused, and is outstanding from protective sleeve 46 by the fusing of resistive conductor 44, because of the display bar in the display barrel 39 40 is given prominence to, so the demonstration that can fuse.
According to above-mentioned execution mode, add (3), (4) of first execution mode, the action effect of (6), can obtain following action effect.
(7) be formed with minor diameter part 21 and large-diameter portion 22 respectively in the top and the bottom of insulating cylinder 20, when the upper end of minor diameter part 21 is provided with upper electrode 24, be provided with lower electrode 26 in the bottom periphery, follow the insulating core 27 that installs with target 32 and internal electrode in large-diameter portion 22 interpolations, in minor diameter part 21 and in the large-diameter portion 22, be filled with arc extinguishing sand 45 as the arc extinguishing member, electrical fuse element 41 is formed by the first electrical fuse element 41a and the second electrical fuse element 41b, by with the first electrical fuse element 41a upper electrode 24 being connected with internal electrode 28 in the minor diameter part 21, internal electrode 28 is connected with target 32 with the second electrical fuse element 41b by in the large-diameter portion 22, by along insulating cylinder 20 peripheries, conductive plate 38 as conductor component is connected target 32 with lower electrode 26.
Therefore, need not change original high-tension fuse and just can improve breaking capacity (rated current capacity).In addition, because be arc extinguishing in insulating cylinder 20, so also can not produce the sound in when fusing and flash of light etc.
(8) electrical fuse element 41 is formed by the first electrical fuse element 41a and the second electrical fuse element 41b, the first electrical fuse element 41a forms with silver dollar spare, and the central portion of the second electrical fuse element 41b is formed with the silver dollar spare that two ends with this low melting metal portion are connected respectively by low melting metal portion.And low melting metal portion is covered by the arc-extinguishing tube 43 that is made of fluororesin etc.And, in the minor diameter part 21 of insulating cylinder 20, between large-diameter portion 22 and the insulating core 27 and in the insulating core 27, be filled with arc extinguishing sand 45.
Therefore, no matter be that big electric current or little electric current can both interdict effectively.
(9) first electrical fuse element 41a form the helical curve shape; The periphery of the insulating core 27 of the second electrical fuse element 41b in large-diameter portion 22 is reeled and is formed the helical curve shape.
Therefore, owing to can guarantee the needed length of rupturing capacity, so can further improve breaking capacity (rated current capacity).
(10) below protective sleeve 46 with towards below the mode of stretching out formed protuberance 47.
Therefore, even just in case protective sleeve 46 suffers that rainwater also can remove moisture well.
(11) periphery at protective sleeve 46 forms a pair of engaging protrusion 48.
Therefore, as long as existing hook stick is only engaged with engaging protrusion 48, just can easily carry out the handling operation of fuse tube 19 by hook stick to high-tension fuse 1.
In addition, the current limliting shape fuse tube 19 of first, second execution mode also can be used in the short-circuit detecting that has adopted in original high-tension fuse of emitting shape fuse tube.That is, when the machine short circuit, change and be installed on emitting in the shape fuse tube in the high-tension fuse, emit before the installation of shape fuse tube, can confirm whether machine restores from short-circuit condition by installation insurance silk tube 19.Particularly, under the situation that machine has restored from short-circuit condition, when fuse tube 19 has been installed,,, installs and emit shape fuse tube and get final product so fuse tube 19 is taken off because do not fuse demonstration; Under the situation that machine does not also restore from short-circuit condition, when fuse tube 19 has been installed, the electrical fuse element demonstration that will be fused and fuse.Thus, can detect machine and be in short-circuit condition.
In addition, above-mentioned execution mode can be altered to following mode aptly and implements.
In the above-described configuration, main body insulator 1a is not limited to porcelain system, also can adopt resin system.
On the top of upper electrode 24, though split ground is formed with the top contact 25 that is threaded, also can be integrally formed.
In second execution mode, though, the first electrical fuse element 41a forms the helical curve shape, one end is connected with upper electrode 24, the other end is connected with internal electrode 28, but, also can form line part by the axis direction along insulating cylinder 20 in the bottom that is connected with the internal electrode 28 of the first electrical fuse element 41a.
If constitute like this, when the first electrical fuse element 41a fuses, will just can be near minor diameter part 21 inner peripheral surfaces of insulating cylinder 20 with the caterpillar form height resistive element that arc extinguishing sand 45 forms, the carbonization of the insulating cylinder 20 that causes because of the heat that produces during fusing just can not take place.
Thereby, can prevent that the first electrical fuse element 41a from having carried out blocking action after, remain in upper electrode 24 sides the first electrical fuse element 41a, and be configured in short circuit between the lower electrode 26 of minor diameter part 21 bottoms of insulating cylinder 20.
In second execution mode, though, the first electrical fuse element 41a is located at the top, the second electrical fuse element 41b is located at below formation current limliting shape fuse tube 19, and still, the outside that also the first electrical fuse element 41a can be located at the electrical fuse element 41 of first execution mode forms.
Claims (5)
1. high-tension fuse fuse tube that is installed on high-tension fuse is characterized in that:
Two ends up and down at insulating cylinder are respectively equipped with upper electrode and target,
Central portion periphery at insulating cylinder is provided with lower electrode,
Follow insulating core in the insulating cylinder interpolation, simultaneously, be filled with the arc extinguishing member,
With upper electrode being connected with target by the electrical fuse element that is wound in the insulating cylinder on the insulating core,
By conductor component target is connected with lower electrode along the insulating cylinder periphery.
2. high-tension fuse fuse tube that is installed on high-tension fuse is characterized in that:
Top and bottom at insulating cylinder are formed with minor diameter part and large-diameter portion respectively,
When the upper end of minor diameter part was provided with upper electrode, periphery was provided with lower electrode in the bottom,
The insulating core of in large-diameter portion, pegging graft target and internal electrode being installed,
In minor diameter part and in the large-diameter portion, be filled with the arc extinguishing member,
Electrical fuse element is formed by first electrical fuse element and second electrical fuse element,
By with first electrical fuse element upper electrode being connected with internal electrode in the minor diameter part,
By with second electrical fuse element internal electrode being connected with target in the large-diameter portion,
By conductor component target is connected with lower electrode along the insulating cylinder periphery.
3. high-tension fuse fuse tube according to claim 1 and 2 is characterized in that:
Be provided with the protective sleeve that covers target and conductor component in the bottom of insulating cylinder.
4. high-tension fuse fuse tube according to claim 3 is characterized in that:
On target, be provided with display barrel,
In display barrel, take in the display member of when electrical fuse element fuses, from protective sleeve, giving prominence to.
5. high-tension fuse fuse tube according to claim 3 is characterized in that:
Be formed with a pair of engaging protrusion in the periphery of lower electrode or the periphery of protective sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201359343U CN201698976U (en) | 2010-02-09 | 2010-02-09 | Fuse barrel for high-voltage fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201359343U CN201698976U (en) | 2010-02-09 | 2010-02-09 | Fuse barrel for high-voltage fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201698976U true CN201698976U (en) | 2011-01-05 |
Family
ID=43400222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201359343U Expired - Fee Related CN201698976U (en) | 2010-02-09 | 2010-02-09 | Fuse barrel for high-voltage fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201698976U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606496A (en) * | 2013-12-05 | 2014-02-26 | 北京鼎一伟信科技发展有限公司 | Fuse wire and fuse tube for fuse |
-
2010
- 2010-02-09 CN CN2010201359343U patent/CN201698976U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606496A (en) * | 2013-12-05 | 2014-02-26 | 北京鼎一伟信科技发展有限公司 | Fuse wire and fuse tube for fuse |
| CN103606496B (en) * | 2013-12-05 | 2015-11-11 | 北京鼎一通远科技发展有限公司 | Fuse fuse and fusion tube |
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