CN203826327U - Drop-out fuse - Google Patents
Drop-out fuse Download PDFInfo
- Publication number
- CN203826327U CN203826327U CN201420113133.5U CN201420113133U CN203826327U CN 203826327 U CN203826327 U CN 203826327U CN 201420113133 U CN201420113133 U CN 201420113133U CN 203826327 U CN203826327 U CN 203826327U
- Authority
- CN
- China
- Prior art keywords
- fuse
- cartridge fuse
- button
- fuse wire
- secondary cartridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 230000009194 climbing Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Fuses (AREA)
Abstract
The utility model discloses a drop-out fuse comprising a fuse wire tube. The upper end of the fuse wire tube is provided with an upper fixing member, and the lower end of the fuse wire tube is fixedly provided with a segment of transparent secondary fuse wire tube. The lower end of the secondary fuse wire tube is fixedly connected with a lower fixing member. The lower fixing member is hinged with a fuse wire fixing frame. The fuse wire tube is internally provided with a fuse wire. The upper end of the fuse wire is electrically connected with the upper fixing member, and the lower end of the fuse wire is electrically connected with the fuse wire fixing frame. The fuse wire tube, the secondary fuse wire tube and the lower fixing member are hollow. The drop-out fuse also comprises a self-locking control unit comprising a battery, a non-off silicon controlled rectifier SCR, a resistor R, a polar capacitor C, an automatic reset normally open button SW0, an automatic reset normally closed button SW1 and an LED light-emitting tube. The two ends of the automatic reset normally open button SW0 are fixed on the lower port of the secondary fuse wire tube, and the button of the automatic reset normally open button SW0 is ensured to orient the internal part of the secondary fuse wire tube.
Description
Technical field
The utility model relates to a kind of fuse switch.
Background technology
Fuse switch is the most frequently used a kind of protective switch of the short circuit of 10kV distribution line branch line and distribution transformer; it have economy, easy to operate, adapt to the features such as outdoor environment is strong, be widely used in 10kV distribution line and distribution transformer primary side as protection and carry out equipment throwing, cut the use of operation.
Fuse switch is arranged on 10kV distribution line branch line, can dwindle power failure range, because it has an obvious cut-off point, possess the function of isolating switch, create a safety work environment to maintenance section circuit and equipment, increased maintainer's the sense of security.Be arranged on distribution transformer, can be used as the main protection of distribution transformer, so, in 10kV distribution line and distribution transformer, obtained universal.
Outdoor drop-out fuse is applicable to exchange 50HZ, in the electric power system of rated voltage 10KV, be used as the overload of electric line and power transformer and short-circuit protection and minute, only close rated load electric current.The model of widely used outdoor drop-out fuse has two kinds, RW7 type and RW11 type.
During actual electric power maintenance, often can run into the problem that fuse switch fuses because electric current is excessive, ideally, after fuse switch blows, can fall from link, thereby cut off circuit, realize the protective effect to equipment; But because fuse switch is in the environment of exposure, stand for a long time wind, Exposure to Sunlight, drench with rain, make the Plug Division of fuse switch suffer oxidative attack and save bit by bit a large amount of dusts, cause the success rate of fuse switch when falling greatly to reduce, so that the very difficult damage of whether falling to judge fuse switch from fuse switch when power-off is repaired, has caused trouble to waste preventive maintenance time to attendant.So the patent No. is: 200910216957.9, utility model name is called: a kind of utility model patent of fuse has just proposed a solution.
As shown in Figure 1, the general configuration of this fuse is: this fuse comprises the cartridge fuse 1 of hollow, the upper end of cartridge fuse 1 upper fixing element 2 that has been threaded, in order to guarantee stable connection, after being threaded, be glued together, the upper end of the upper fixing element 2 upper top cap 12 that has been threaded, is installed with conducting rod 13 in upper top cap 12, and conducting rod 13 forms and is electrically connected to upper top cap 12.The lower end of the cartridge fuse 1 one section of transparent secondary cartridge fuse 6 that is threaded, lower end and the lower fixture 3 of secondary cartridge fuse 6 are threaded togather, lower fixture 3 is also bonded together with glue and secondary cartridge fuse 6, on lower fixture 3, be hinged with fuse fixed mount 4, bolt 14 and cartridge clip 15 are installed on fuse fixed mount 4, in cartridge fuse 1, be provided with fuse 5, the upper end of fuse 5 forms and is electrically connected to upper fixing element 2, the lower end of fuse 5 is locked on fuse fixed mount 4 by bolt 14 after by cartridge clip 15 tension, goes up like this top cap 12 and fuse fixed mount 4 is just electrically connected by fuse 5.On fuse 5, be set with the observation piece 7 corresponding with secondary cartridge fuse 6 positions, observe piece 7 and be spherical shape, observe piece 7 volume ratio fuses 5 much bigger, so observing effect is more obvious.
In the inner chamber of secondary cartridge fuse 6, be provided with the protection tube 8 of suit fuse 5; the Main Function of protection tube 8 is that the electric arc producing while preventing fuse 5 fusing causes damage to secondary cartridge fuse 6 inwalls; impact is used next time; arrange after protection tube 8; the protected pipe 8 of electric arc of fuse 5 fusing stops; while changing fuse 5, change protection tube 8 together next time.Cartridge fuse 1 lower end is provided with protection tube 8 upper ends and clamps the card platform 9 coordinating, and while changing protection tube 8, only need be moved and protection tube 8 can be pulled down or snapped fitted on card platform 9 from card platform 9 by plug, very convenient.Card platform 9 is provided with the decompression line 10 corresponding with protection tube 8 inwalls, the air blast that the Main Function of decompression line 10 produces while being the fusing of buffering fuse 5, prevent air-flow from protection tube 8 upper ends around to protection tube 8 outsides, avoid secondary cartridge fuse 6 inner sides to damage.In order to reduce the friction between protection tube 8 and secondary cartridge fuse 6 when the plug protection tube 8, between secondary cartridge fuse 6 and protection tube 8, be provided with gap 11.
Principle is: this fuse is to adopt segmented visible structure to realize to judge whether fuse fuses fast.Segmented visible structure mainly comprises the secondary cartridge fuse that is fixed in cartridge fuse lower end, and the lower end of lower fixture and secondary cartridge fuse is fixed together, and secondary cartridge fuse is transparent visible.Under electricity consumption normal condition, when fuse does not also fuse, by transparent secondary cartridge fuse, just can see that fuse strains vertically in cartridge fuse, and when electricity consumption is broken down, and actual current surpasses fuse permission electric current, fuse fuses high temperature, now the fuse part of below, fuse failure place will blow out cartridge fuse under the impact of high temperature gas flow in cartridge fuse, while now observing by secondary cartridge fuse, in secondary cartridge fuse, will be empty, clearly fuse fuses.Use the fuse of this structure, most applications examines, judges whether fuse fuses without climbing, also without using checkout equipment to detect quality, directly on the ground by visually observing, just can know whether fuse needs to change, very convenient, contribute to improve operator's operating efficiency.
But in practical application, find due to fuse long term exposure in the wild, if local air quality is poor especially, the king-sized words of dust, once run into rainy day, dust is just attached on secondary cartridge fuse under the effect of rainwater, and whether cause cannot directly need to change by visually observing fuse on the ground.
Utility model content
The purpose of this utility model is to provide a kind of fuse switch, has really realized on the ground and just can judge by visually observing whether fuse needs the requirement of changing.
In order to realize above object, the technical scheme that utility model adopts is: fuse switch, comprise cartridge fuse, the upper end of cartridge fuse is provided with upper fixing element, the lower end of cartridge fuse is installed with one section of transparent secondary cartridge fuse, lower end and the lower fixture of secondary cartridge fuse are fixed together, on lower fixture, be hinged with fuse fixed mount, in cartridge fuse, be provided with fuse, the upper end of fuse is electrically connected to upper fixing element, the lower end of fuse is electrically connected to fuse fixed mount, on fuse, be set with the observation piece corresponding with secondary cartridge fuse position, in the inner chamber of secondary cartridge fuse, be provided with the protection tube of suit fuse, cartridge fuse lower end is provided with protection tube upper end and clamps the portion that clamps coordinating, cartridge fuse, secondary cartridge fuse and lower fixture are all hollow, also comprise self-locking control unit, shown self-locking control unit comprise battery, not turn-off thyristor SCR, resistance R, polar capacitor C, automatically reset often open button SW0, normally closed button SW1 and LED luminous tube automatically reset,
The positive pole of battery is electrically connected to the positive pole of LED luminous tube, the negative electricity of LED luminous tube connects the not anode of turn-off thyristor SCR, the negative pole of battery connects one end of the normally closed button SW1 that automatically resets, and the other end of the normally closed button SW1 that automatically resets connects the negative polarity end of polar capacitor C; One end of the anodic bonding resistance R of turn-off thyristor SCR not, the other end of resistance R connects to automatically reset often opens a terminal of button SW0, and the another terminal of often opening button SW0 that automatically resets connects the not gate pole of turn-off thyristor SCR; The reset tie point of normally closed button SW1 of the positive ends contact resistance R of polar capacitor C and the tie point of often opening button SW0 of automatically reseting, the other end of polar capacitor C connects the not negative electrode of turn-off thyristor SCR;
The shown two ends of often opening button SW0 that automatically reset are fixed in the lower port of secondary cartridge fuse, and guarantee to automatically reset often to open the key face of button SW0 to the inside of secondary cartridge fuse;
Shown LED luminous tube is arranged at the inside of secondary cartridge fuse.
Compared with prior art, the utility model has the advantage of: when actual current surpasses fuse permission electric current, fuse fuses high temperature, now in cartridge fuse, can produce high temperature gas flow, high temperature gas flow is got rid of by the lower port of secondary cartridge fuse downwards, the two ends of often opening button SW0 owing to automatically reseting are fixed in the lower port of secondary cartridge fuse, and automatically reset and often open the key face of button SW0 to the inside of secondary cartridge fuse; Now air-flow can make to automatically reset and often hold the situation that moment closure appears in button SW0, because the utility model has adopted self-locking control circuit, so even air-flow disappears, LED luminous tube of the present utility model remains to be lighted, by secondary cartridge fuse, can see whether LED luminous tube is lit, if be lit, explanation need to be changed fuse.The utility model not power consumption at ordinary times, does not need to change battery, just really may be applied in reality, and the utility model really can make attendant in the situation that not climbing, judge whether fast to change fuse.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art.
Wherein, 1 is cartridge fuse, and 2 is upper fixing element, and 3 is lower fixture, and 4 is fuse fixed mount, and 5 is fuse; 6 is secondary cartridge fuse, and 7 for observing piece, and 8 is protection tube, and 9 is Ka Tai, and 10 is decompression line; 11 is gap, and 12 is upper top cap, and 13 is conducting rod, and 14 is bolt, and 15 is cartridge clip.
Fig. 2 is the utility model latching circuit principle schematic.
Fig. 3 is that the utility model pass key switch arranges schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, utility model is described in further detail.
Fuse switch, comprise cartridge fuse, the upper end of cartridge fuse is provided with upper fixing element, the lower end of cartridge fuse is installed with one section of transparent secondary cartridge fuse, lower end and the lower fixture of secondary cartridge fuse are fixed together, on lower fixture, be hinged with fuse fixed mount, in cartridge fuse, be provided with fuse, the upper end of fuse is electrically connected to upper fixing element, the lower end of fuse is electrically connected to fuse fixed mount, on fuse, be set with the observation piece corresponding with secondary cartridge fuse position, in the inner chamber of secondary cartridge fuse, be provided with the protection tube of suit fuse, cartridge fuse lower end is provided with protection tube upper end and clamps the portion that clamps coordinating, cartridge fuse, secondary cartridge fuse and lower fixture are all hollow, also comprise self-locking control unit, shown self-locking control unit comprise battery, not turn-off thyristor SCR, resistance R, polar capacitor C, automatically reset often open button SW0, normally closed button SW1 and LED luminous tube automatically reset,
The positive pole of battery is electrically connected to the positive pole of LED luminous tube, the negative electricity of LED luminous tube connects the not anode of turn-off thyristor SCR, the negative pole of battery connects one end of the normally closed button SW1 that automatically resets, and the other end of the normally closed button SW1 that automatically resets connects the negative polarity end of polar capacitor C; One end of the anodic bonding resistance R of turn-off thyristor SCR not, the other end of resistance R connects to automatically reset often opens a terminal of button SW0, and the another terminal of often opening button SW0 that automatically resets connects the not gate pole of turn-off thyristor SCR; The positive ends contact resistance R of polar capacitor C often opens the tie point of button SW0 with automatically reseting, and the other end of polar capacitor C connects the not negative electrode of turn-off thyristor SCR; The shown two ends of often opening button SW0 that automatically reset are fixed in the lower port of secondary cartridge fuse, and guarantee to automatically reset often to open the key face of button SW0 to the inside of secondary cartridge fuse; Shown LED luminous tube is arranged at the inside of secondary cartridge fuse.
Wherein battery adopts 4 button cells to form.
The utility model principle explanation: when actual current surpasses fuse permission electric current, fuse fuses high temperature, now in cartridge fuse, can produce high temperature gas flow, high temperature gas flow is got rid of by the lower port of secondary cartridge fuse downwards, the two ends of often opening button SW0 owing to automatically reseting are fixed in the lower port of secondary cartridge fuse, and automatically reset and often open the key face of button SW0 to the inside of secondary cartridge fuse; Now air-flow can make to automatically reset and often hold the situation that moment closure appears in button SW0, because the utility model has adopted self-locking control circuit, so even if air-flow disappears, LED luminous tube of the present utility model remains to be lighted.The not power consumption at ordinary times of the utility model latching circuit, does not need to change battery, and when fuse blows, LED luminous tube is lit, and therefore by secondary cartridge fuse, sees whether LED luminous tube is lit, thereby judges whether to change fuse.The utility model the utility model really can make attendant in the situation that not climbing, judge whether fast to change fuse.
Claims (1)
1. fuse switch, comprise cartridge fuse (1), the upper end of cartridge fuse (1) is provided with upper fixing element (2), the lower end of cartridge fuse (1) is installed with one section of transparent secondary cartridge fuse (6), lower end and the lower fixture (3) of secondary cartridge fuse (6) are fixed together, on lower fixture (3), be hinged with fuse fixed mount (4), in cartridge fuse (1), be provided with fuse (5), the upper end of fuse (5) is electrically connected to upper fixing element (2), the lower end of fuse (5) is electrically connected to fuse fixed mount (4), on fuse (5), be set with the observation piece (7) corresponding with secondary cartridge fuse (6) position, in the inner chamber of secondary cartridge fuse (6), be provided with the protection tube (8) of suit fuse (5), cartridge fuse (1) lower end is provided with protection tube (8) upper end and clamps the portion that clamps coordinating, cartridge fuse (1), secondary cartridge fuse (6) and lower fixture (3) are all hollow, it is characterized in that, also comprise self-locking control unit, shown self-locking control unit comprise battery, not turn-off thyristor SCR, resistance R, polar capacitor C, automatically reset often open button SW0, normally closed button SW1 and LED luminous tube automatically reset,
The positive pole of battery is electrically connected to the positive pole of LED luminous tube, the negative electricity of LED luminous tube connects the not anode of turn-off thyristor SCR, the negative pole of battery connects one end of the normally closed button SW1 that automatically resets, and the other end of the normally closed button SW1 that automatically resets connects the negative polarity end of polar capacitor C;
One end of the anodic bonding resistance R of turn-off thyristor SCR not, the other end of resistance R connects to automatically reset often opens a terminal of button SW0, and the another terminal of often opening button SW0 that automatically resets connects the not gate pole of turn-off thyristor SCR; The reset tie point of normally closed button SW1 of the positive ends contact resistance R of polar capacitor C and the tie point of often opening button SW0 of automatically reseting, the other end of polar capacitor C connects the not negative electrode of turn-off thyristor SCR;
The shown two ends of often opening button SW0 that automatically reset are fixed in the lower port of secondary cartridge fuse (6), and guarantee to automatically reset often to open the key face of button SW0 to the inside of secondary cartridge fuse (6); Shown LED luminous tube is arranged at the inside of secondary cartridge fuse (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113133.5U CN203826327U (en) | 2014-03-13 | 2014-03-13 | Drop-out fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113133.5U CN203826327U (en) | 2014-03-13 | 2014-03-13 | Drop-out fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826327U true CN203826327U (en) | 2014-09-10 |
Family
ID=51481798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113133.5U Expired - Lifetime CN203826327U (en) | 2014-03-13 | 2014-03-13 | Drop-out fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203826327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811239A (en) * | 2014-03-13 | 2014-05-21 | 杨士锋 | Drop-out fuse |
-
2014
- 2014-03-13 CN CN201420113133.5U patent/CN203826327U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811239A (en) * | 2014-03-13 | 2014-05-21 | 杨士锋 | Drop-out fuse |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140910 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |