CN103811239B - Fuse switch - Google Patents
Fuse switch Download PDFInfo
- Publication number
- CN103811239B CN103811239B CN201410091680.2A CN201410091680A CN103811239B CN 103811239 B CN103811239 B CN 103811239B CN 201410091680 A CN201410091680 A CN 201410091680A CN 103811239 B CN103811239 B CN 103811239B
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- China
- Prior art keywords
- fuse
- cartridge fuse
- button
- secondary cartridge
- connects
- 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 - Fee Related
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- 239000003990 capacitor Substances 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 5
- 230000009194 climbing Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 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
- 239000000203 mixture Substances 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
Abstract
The invention discloses a kind of fuse switch, comprise cartridge fuse, the upper end of cartridge fuse is provided with upper fixing element, and the lower end of cartridge fuse is installed with one section of transparent secondary cartridge fuse, and lower end and the lower fixture of secondary cartridge fuse are fixed together, lower fixture is hinged with fuse fixed mount, be provided with fuse in cartridge fuse, the upper end of fuse is electrically connected with upper fixing element, and the lower end of fuse is electrically connected with fuse fixed mount, cartridge fuse, secondary cartridge fuse and lower fixture are all hollow, also comprise self-locking control unit; Shown self-locking control unit comprises battery, not turn-off thyristor SCR, resistance R, polar capacitor C, automatically reset often open button SW0, automatically reset normally closed button SW1 and LED; The shown two ends of often opening button SW0 that automatically reset are fixed in the lower port of secondary cartridge fuse, and the key face of often opening button SW0 of ensureing to automatically reset is inner to secondary cartridge fuse.
Description
Technical field
The present invention 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 with carry out equipment throwing, cut the use of operation.
Fuse switch is arranged on 10kV distribution line branch line, can power failure range be reduced, 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, add the sense of security of maintainer.Be arranged on distribution transformer, can as the main protection of distribution transformer, so, obtain universal in 10kV distribution line and distribution transformer.
Outdoor drop-out fuse is applicable to exchange in the electric power system of 50HZ, rated voltage 10KV, be used as the overload of electric line and power transformer and short-circuit protection and point, only close rated load current.The model of widely used outdoor drop-out fuse has RW7 type and two kinds, RW11 type.
During actual electric power maintenance, often can run into the problem that fuse switch fuses because electric current is excessive, ideally, can fall from link after fuse switch blows, thus cut off circuit realiration to the protective effect of equipment; But because fuse switch is in the environment of exposure, stand wind, Exposure to Sunlight for a long time, drench with rain, make the Plug Division of fuse switch suffer oxidative attack and saved bit by bit a large amount of dust, the success rate of fuse switch when falling is caused greatly to reduce, so that be difficult to whether fall from fuse switch the damage judging fuse switch when power-off is repaired, cause trouble to attendant and waste preventive maintenance time.So the patent No. is: 200910216957.9, denomination of invention is: a kind of patent of invention of fuse just proposes a solution.
As described in Figure 1, the general configuration of this fuse is: this fuse comprises the cartridge fuse 1 of hollow, the threaded upper ends of cartridge fuse 1 is connected with upper fixing element 2, in order to ensure stable connection, be glued together after being threaded, the threaded upper ends of upper fixing element 2 is connected with top cap 12, is installed with conducting rod 13 in upper top cap 12, and conducting rod 13 forms with upper top cap 12 and is electrically connected.The lower end of cartridge fuse 1 is threaded one section of transparent secondary cartridge fuse 6, 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, lower fixture 3 is hinged with fuse fixed mount 4, fuse fixed mount 4 is provided with bolt 14 and cartridge clip 15, fuse 5 is provided with in cartridge fuse 1, the upper end of fuse 5 forms with upper fixing element 2 and is electrically connected, the lower end of fuse 5 is locked on fuse fixed mount 4 by bolt 14 after being strained by cartridge clip 15, and upper like this top cap 12 and fuse fixed mount 4 are just electrically connected by fuse 5.Fuse 5 is set with the observation block 7 corresponding with secondary cartridge fuse 6 position, observes block 7 in spherical shape, observe block 7 volume ratio fuse 5 much bigger, therefore observing effect is more obvious.
The protection tube 8 of suit fuse 5 is provided with in the inner chamber of secondary cartridge fuse 6; the Main Function of protection tube 8 is that the electric arc produced when preventing fuse 5 from fusing causes damage to secondary cartridge fuse 6 inwall; impact uses next time; after protection tube 8 is set; the protected pipe 8 of electric arc that fuse 5 fuses stops; protection tube 8, when changing fuse 5, is changed by next time together.Cartridge fuse 1 lower end is provided with the chuck 9 with protection tube 8 upper end snap fit, when changing protection tube 8, only need can pull down or snap fitted in chuck 9 from chuck 9 by protection tube 8 by plug action, very convenient.Chuck 9 is provided with the decompression line 10 corresponding with protection tube 8 inwall, and the Main Function of decompression line 10 is air blasts that buffering fuse 5 produces when fusing, and prevents air-flow from protection tube 8 upper end around outside protection tube 8, avoids damaging inside secondary cartridge fuse 6.In order to reduce the friction when plug protection tube 8 between protection tube 8 and secondary cartridge fuse 6, between secondary cartridge fuse 6 and protection tube 8, be provided with gap 11.
Principle is: this fuse adopts segmented visible structure to realize judging whether fuse fuses fast.Segmented visible structure mainly comprises the secondary cartridge fuse being 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, just can see that fuse is strained vertically in cartridge fuse by transparent secondary cartridge fuse, and when electricity consumption is broken down, when actual current exceedes fuse permission electric current, high temperature fuses by fuse, fuse part now below fuse failure place blows out cartridge fuse by under the impact of high temperature gas flow in cartridge fuse, when now being observed by secondary cartridge fuse, will be empty in secondary cartridge fuse, clearly fuse fuses.Use the fuse of this structure, majority of case examines without the need to climbing, judge whether fuse fuses, also without the need to using checkout equipment to detect quality, directly on the ground by visually observing, just can know that fuse is the need of replacing, very convenient, contribute to the operating efficiency improving operator.
But find in practical application 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 causing cannot directly on the ground by visually observing fuse the need of replacing.
Summary of the invention
The object of the present invention is to provide a kind of fuse switch, really achieve and just can judge that fuse is the need of the requirement changed by visually observing on the ground.
In order to realize above object, inventing the technical scheme adopted 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, lower fixture is hinged with fuse fixed mount, fuse is provided with in cartridge fuse, the upper end of fuse is electrically connected with upper fixing element, the lower end of fuse is electrically connected with fuse fixed mount, fuse is set with the observation block corresponding with secondary cartridge fuse position, the protection tube of suit fuse is provided with in the inner chamber of secondary cartridge fuse, cartridge fuse lower end be provided with protection tube upper end snap fit clamp portion, cartridge fuse, secondary cartridge fuse and lower fixture are all hollow, also comprise self-locking control unit, described self-locking control unit comprises battery, not turn-off thyristor SCR, resistance R, polar capacitor C, automatically reset often open button SW0, automatically reset normally closed button SW1 and LED,
The positive pole of the positive pole electrical connection LED of battery, the negative electricity of LED connects the anode of not turn-off thyristor SCR, the negative pole of battery connects the 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;
Not one end of the anode contact resistance R of turn-off thyristor SCR, 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 of automatically reseting connects the gate pole of not 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 negative polarity end of polar capacitor C connects the negative electrode of not turn-off thyristor SCR;
The described two ends of often opening button SW0 that automatically reset are fixed in the lower port of secondary cartridge fuse, and ensure the key face of often the opening button SW0 inside to secondary cartridge fuse that automatically resets;
Described LED is arranged at the inside of secondary cartridge fuse.
Compared with prior art, the invention has the advantages that: when actual current exceedes fuse permission electric current, high temperature fuses by fuse, now high temperature gas flow can be produced in cartridge fuse, the lower port that high temperature gas flow passes downwardly through secondary cartridge fuse is got rid of, the two ends of often opening button SW0 owing to automatically reseting are fixed in the lower port of secondary cartridge fuse, and the key face of often the opening button SW0 inside to secondary cartridge fuse that automatically resets; Now air-flow can make to automatically reset and often hold button SW0 appearance situation closed instantaneously, owing to present invention employs self-locking control circuit, even if so air-flow disappears, LED of the present invention remains to be lighted, can see whether LED is lit by secondary cartridge fuse, if be lit, then illustrated and need to change fuse.The present invention's not power consumption at ordinary times, does not need to change battery, just really may be applied in reality, and the present invention really can make attendant judge whether fast when not climbing to need 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 block, and 8 is protection tube, and 9 is chuck, 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 latching circuit principle schematic of the present invention.
Fig. 3 is that key switch of the present invention arranges schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, invention 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, lower fixture is hinged with fuse fixed mount, fuse is provided with in cartridge fuse, the upper end of fuse is electrically connected with upper fixing element, the lower end of fuse is electrically connected with fuse fixed mount, fuse is set with the observation block corresponding with secondary cartridge fuse position, the protection tube of suit fuse is provided with in the inner chamber of secondary cartridge fuse, cartridge fuse lower end be provided with protection tube upper end snap fit clamp portion, cartridge fuse, secondary cartridge fuse and lower fixture are all hollow, also comprise self-locking control unit, described self-locking control unit comprises battery, not turn-off thyristor SCR, resistance R, polar capacitor C, automatically reset often open button SW0, automatically reset normally closed button SW1 and LED,
The positive pole of the positive pole electrical connection LED of battery, the negative electricity of LED connects the anode of not turn-off thyristor SCR, the negative pole of battery connects the 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; Not one end of the anode contact resistance R of turn-off thyristor SCR, 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 of automatically reseting connects the gate pole of not 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 negative polarity end of polar capacitor C connects the negative electrode of not turn-off thyristor SCR; The described two ends of often opening button SW0 that automatically reset are fixed in the lower port of secondary cartridge fuse, and ensure the key face of often the opening button SW0 inside to secondary cartridge fuse that automatically resets; Described LED is arranged at the inside of secondary cartridge fuse.
Wherein battery adopts 4 button cell compositions.
The principle of the invention illustrates: when actual current exceedes fuse permission electric current, high temperature fuses by fuse, now high temperature gas flow can be produced in cartridge fuse, the lower port that high temperature gas flow passes downwardly through secondary cartridge fuse is got rid of, the two ends of often opening button SW0 owing to automatically reseting are fixed in the lower port of secondary cartridge fuse, and the key face of often the opening button SW0 inside to secondary cartridge fuse that automatically resets; Now air-flow can make to automatically reset and often hold button SW0 and occur situation closed instantaneously, and owing to present invention employs self-locking control circuit, even if so air-flow disappears, LED of the present invention remains to be lighted.Latching circuit of the present invention not power consumption at ordinary times, do not need to change battery, when fuse blows, LED is lit, and therefore sees whether LED is lit by secondary cartridge fuse, thus judges whether to need to change fuse.Of the present inventionly attendant really can be made to judge whether fast when not climbing to need 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, lower fixture (3) is hinged with fuse fixed mount (4), fuse (5) is provided with in cartridge fuse (1), the upper end of fuse (5) is electrically connected with upper fixing element (2), the lower end of fuse (5) is electrically connected with fuse fixed mount (4), fuse (5) is set with the observation block (7) corresponding with secondary cartridge fuse (6) position, the protection tube (8) of suit fuse (5) is provided with in the inner chamber of secondary cartridge fuse (6), cartridge fuse (1) lower end be provided with protection tube (8) upper end snap fit clamp portion, 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, described self-locking control unit comprises battery, not turn-off thyristor SCR, resistance R, polar capacitor C, automatically reset often open button SW0, automatically reset normally closed button SW1 and LED,
The positive pole of the positive pole electrical connection LED of battery, the negative electricity of LED connects the anode of not turn-off thyristor SCR, the negative pole of battery connects the 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;
Not one end of the anode contact resistance R of turn-off thyristor SCR, 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 of automatically reseting connects the gate pole of not 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 negative polarity end of polar capacitor C connects the negative electrode of not turn-off thyristor SCR;
The described two ends of often opening button SW0 that automatically reset are fixed in the lower port of secondary cartridge fuse (6), and ensure the key face of often the opening button SW0 inside to secondary cartridge fuse (6) that automatically resets; Described LED is arranged at the inside of secondary cartridge fuse (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410091680.2A CN103811239B (en) | 2014-03-13 | 2014-03-13 | Fuse switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410091680.2A CN103811239B (en) | 2014-03-13 | 2014-03-13 | Fuse switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103811239A CN103811239A (en) | 2014-05-21 |
| CN103811239B true CN103811239B (en) | 2016-03-02 |
Family
ID=50707864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410091680.2A Expired - Fee Related CN103811239B (en) | 2014-03-13 | 2014-03-13 | Fuse switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103811239B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118758B (en) * | 2015-08-26 | 2018-03-16 | 芜湖市凯鑫避雷器有限责任公司 | Have a power failure automatic maintenance fuse switch |
| CN107026062B (en) * | 2017-04-30 | 2018-10-30 | 南京开关厂有限公司 | Fuse switch |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5463366A (en) * | 1992-09-17 | 1995-10-31 | Cooper Industries, Inc. | Current limiting fuse and dropout fuseholder |
| CN201508816U (en) * | 2009-10-15 | 2010-06-16 | 江苏省电力公司东台市供电公司 | High-voltage distribution alarming falling type double-contact fuse protector |
| CN101764004B (en) * | 2009-12-29 | 2012-07-11 | 山东电力集团公司潍坊供电公司 | Fuse protector |
| CN203312228U (en) * | 2013-06-30 | 2013-11-27 | 周海兵 | Fusing indication type high-voltage fuse |
| CN203826327U (en) * | 2014-03-13 | 2014-09-10 | 国家电网公司 | Drop-out fuse |
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2014
- 2014-03-13 CN CN201410091680.2A patent/CN103811239B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103811239A (en) | 2014-05-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: YANG SHIFENG Effective date: 20140904 Owner name: JIANGSU ELECTRIC POWER COMPANY FUNING POWER SUPPLY Effective date: 20140904 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 224200 YANCHENG, JIANGSU PROVINCE TO: 100761 DONGCHENG, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20140904 Address after: 100761 West Chang'an Avenue, Beijing, No. 86 Applicant after: State Grid Corporation of China Applicant after: Jiangsu Electric Power Company Applicant after: Funing Power Supply Company of Jiangsu Electric Power Company Applicant after: Funing Hengyuan Electrical Industrial Co. Ltd. Address before: 224200 No. 99 Ting Ting North Road, Dongtai, Jiangsu, Yancheng City Applicant before: Yang Shifeng |
|
| CB03 | Change of inventor or designer information |
Inventor after: Cui Weiwei Inventor after: Zhang Zhijun Inventor after: Yan Jiafeng Inventor after: Zhu Maobiao Inventor before: Yang Shifeng Inventor before: Cui Weiwei Inventor before: Xia Xiaoyan |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20180313 |