CN104576258A - Self-energy-storage high-voltage drop blowout switch - Google Patents
Self-energy-storage high-voltage drop blowout switch Download PDFInfo
- Publication number
- CN104576258A CN104576258A CN201410843704.5A CN201410843704A CN104576258A CN 104576258 A CN104576258 A CN 104576258A CN 201410843704 A CN201410843704 A CN 201410843704A CN 104576258 A CN104576258 A CN 104576258A
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- CN
- China
- Prior art keywords
- fusion tube
- voltage drop
- energy storage
- contact
- storage high
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Classifications
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- 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
- H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
Abstract
The invention provides a self-energy-storage high-voltage drop blowout switch. A first spring plate elastically contacted with the side surface of the upper end of a fusion tube is arranged on an upper static contact fixing plate of an upper end fixing rack of a support insulator; a second spring plate elastically contacted with the side surface of the lower end of the fusion tube is arranged on a main base of a lower end fixing rack of the support insulator; and the first spring plate and the second spring plate are in compressive energy storage states during fusion tube switch-on, and are in stretching energy release states during fusion tube blowout, so that the fusion tube accelerates to drop. The self-energy-storage high-voltage drop blowout switch uses the spring plates as energy storage mechanisms, and the spring plates are extruded to store energy during the fusion tube switch-on and apply elastic forces on the fusion tube during the fusion tube blowout, so that the fusion tube accelerates to drop.
Description
Technical field
The present invention relates to a kind of drop type fuse cutout.
Background technology
Fuse switch and pulling load fuse switch are outdoor high-voltage protective devices.Its device on distribution transformer high-pressure side or distribution wire branch circuit, as the short circuit of transformer and circuit, overload protection and point, close load current.Fuse switch is made up of insulating support and cartridge fuse two parts, and fixed contact is arranged on insulating support two ends, and moving contact is arranged on cartridge fuse two ends, cartridge fuse by internal layer expulsion tube and outer field phenolic aldehyde paper tube or epoxy glass laminates forms.Pulling load fuse switch enhancement auxiliary contact and arc-extinguish chamber, in order to divide, to close load current.Fuse switch is when normally running, and cartridge fuse forms make position by after fuse tensioning.When system jam, fault current makes fuse quick-break, and forms electric arc, and expulsion tube is scorching hot by electric arc, decomposites a large amount of gas, makes to form very high pressure in pipe, and forms vertical blowing along pipeline, and electric arc is extinguished by elongating rapidly.After fuse failure, bottom moving contact lose tension force and under turn over, locking machinery, release cartridge fuse, cartridge fuse falls, formed significantly cut-off position.When needs pulling load, moving contact is pulled open with insulating bar, now initiatively, fixed contact still contacts, continuation insulating bar connects, auxiliary contact is also separated, between auxiliary contact, produce electric arc, electric arc is elongated going out in cover slit, and arc-extinguish chamber produces gas simultaneously, when current over-zero, by arc extinction.
Fuse switch and pulling load fuse switch are outdoor high-voltage protective devices.Its device on distribution transformer high-pressure side or distribution wire branch circuit, as the short circuit of transformer and circuit, overload protection and point, close load current.Fuse switch is made up of insulating support and cartridge fuse two parts, and fixed contact is arranged on insulating support two ends, and moving contact is arranged on cartridge fuse two ends, cartridge fuse by internal layer expulsion tube and outer field phenolic aldehyde paper tube or epoxy glass laminates forms.Pulling load fuse switch enhancement auxiliary contact and arc-extinguish chamber, in order to divide, to close load current.Fuse switch is when normally running, and cartridge fuse forms make position by after fuse tensioning.When system jam, fault current makes fuse quick-break, and forms electric arc, and expulsion tube is scorching hot by electric arc, decomposites a large amount of gas, makes to form very high pressure in pipe, and forms vertical blowing along pipeline, and electric arc is extinguished by elongating rapidly.After fuse failure, bottom moving contact lose tension force and under turn over, locking machinery, release cartridge fuse, cartridge fuse falls, formed significantly cut-off position.When needs pulling load, moving contact is pulled open with insulating bar, now initiatively, fixed contact still contacts, continuation insulating bar connects, auxiliary contact is also separated, between auxiliary contact, produce electric arc, electric arc is elongated going out in cover slit, and arc-extinguish chamber produces gas simultaneously, when current over-zero, by arc extinction.
Current falling type switch upper and lower main contact contact area is too little, the 40mm of the minimal-contact area requirements that even not enough safe operation requires
2, often there is Welding Phenomena, easily power grid accident occur, have a strong impact on the normal security of operation of electrical network.
Current falling type switch separating brake aspect of performance, during fault, separating brake is only by fusion tube free-electron model under gravity after fuse failure, speed is too slow, and be moving contact disengaging, the electric arc that easy generation is a large amount of, unfavorable arc extinguishing, if the large generation melting welding of electric arc amount there will be " collapse " phenomenon, thus cause cannot breaking arc in time, affect the personal safety of electricity operator; Domestic falling type switch still all adopts now fuse wire type as overcurrent protection, easy breaking out of fire, particularly in or the comparatively severe running environment that oil gas is serious comparatively large at dust, and easier breaking out of fire during fault separating brake.
Current falling type switch is when separating brake, and side electric current of only cutting off the electricity supply when high-voltage drop type fusion tube falls, but the loop current of load side and capacitance current and inductive current all cannot cut off simultaneously, makes the electric arc that produces very large.
Summary of the invention
Technical problem underlying to be solved by this invention is to provide a kind of drop type fuse cutout, has from energy storage device, when fusion tube closes a floodgate, and energy storage device energy storage; When fusion tube fuses, energy storage device releases energy, makes fusion tube accelerate.
Secondary technical problem to be solved by this invention is to provide a kind of drop type fuse cutout, and the contact area of fixed contact and moving contact is comparatively large, not easily Welding Phenomena occurs.
Secondary technical problem to be solved by this invention is to provide a kind of drop type fuse cutout, and when fusion tube falls, the electric current of mains side and load side cuts off simultaneously.
In order to solve above-mentioned technical problem, the invention provides a kind of from energy storage high-voltage drop type fuse cutout, the upper static contact fixed head of post insulator upper end fixed mount is provided with the first latch plate with fusion tube upper side Elastic Contact; The seat of honour of post insulator lower end fixed mount is provided with the second latch plate with fusion tube lower end side Elastic Contact; Described first latch plate and the second latch plate are compressed energy-storage state when fusion tube closes a floodgate, and are in stretching, extension and release energy state, make fusion tube accelerate when fusion tube fuses.
In a preferred embodiment: described upper static contact fixed head is provided with a upper static contact, described upper static contact is provided with the first circular concave of the upper moving contact sphere-contact of corresponding end on fusion tube.
In a preferred embodiment: the area of described first circular concave is no less than 40mm
2.
In a preferred embodiment: between described first circular concave and upper static contact fixed head, be provided with elastic device.
In a preferred embodiment: the described seat of honour is provided with fixed contact, described lower fixed contact is provided with the second circular concave with the lower moving contact sphere-contact of corresponding end under fusion tube.
In a preferred embodiment: the area of described second circular concave is no less than 50mm
2.
In a preferred embodiment: between described second circular concave and the seat of honour, be provided with elastic device.
In a preferred embodiment: described fusion tube is fusible core formula fusion tube.
In a preferred embodiment: the material of the described seat of honour is epoxy resin.
In a preferred embodiment: described first latch plate, the second latch plate are respectively equipped with combined floodgate guiding mechanism.
In a preferred embodiment: described combined floodgate guiding mechanism scribbles luminescent powder.
Compared to prior art, technical scheme of the present invention possesses following beneficial effect:
1. one provided by the invention is from energy storage high-voltage drop type fuse cutout, employs latch plate as stored energy mechanism, and when fusion tube closes a floodgate, latch plate is extruded energy storage; When fusion tube fuses, latch plate applies elastic force to fusion tube, makes fusion tube accelerate to drop.
2. one provided by the invention is from energy storage high-voltage drop type fuse cutout, and the contact area of fixed contact and moving contact increases, and is provided with elastic device in fixed contact, and provide dibit energy storage together with latch plate, what further increase fusion tube falls speed.
3. one provided by the invention is from energy storage high-voltage drop type fuse cutout, is provided with the guiding mechanism of band noctilucence, and operating personnel stare at for a long time to aim at without the need to the effort that comes back when closing a floodgate and just can precisely close a floodgate, and it also avoid simultaneously and damage eyes because of switching current.
4. one provided by the invention is from energy storage high-voltage drop type fuse cutout, the material selection of seat of honour epoxy resin, compared to cast copper material, epoxy resin can reduce the generation of electric arc, and intensity is cheap higher than cast copper.
Accompanying drawing explanation
Fig. 1 is the structure chart of the preferred embodiment of the present invention 1.
Embodiment
Hereafter the present invention will be further described with embodiment by reference to the accompanying drawings.
With reference to figure 1, a kind of from energy storage high-voltage drop type fuse cutout, the upper static contact fixed head 11 of post insulator 1 upper end fixed mount is provided with the first latch plate 12 with fusion tube 2 upper side Elastic Contact; The seat of honour 13 of post insulator 1 lower end fixed mount is provided with the second latch plate 14 with fusion tube 2 lower end side Elastic Contact, and in the present embodiment, fusion tube 2 is fusible core formula fusion tube.
When the 2-in-1 lock of fusion tube, the first latch plate 12 and the second latch plate 14 are subject to the extruding of fusion tube 2 and elastic deformation occur, storage elasticity potential energy; When the fusible core fusing in fusion tube 2, the turning joint release of fuse cutout lower end, fusion tube 2 falls.Now the first latch plate 12 and the second latch plate 14 pairs of fusion tubes 2 apply elastic force, fusion tube 2 falling speed is accelerated, and through actual measurement, the falling speed of fusion tube 2 can reach 2.7m/s, fall speed far away higher than the existing fuse cutout not with stored energy mechanism, therefore improve arc extinction performance.
The present embodiment also comprises following decision design:
Described upper static contact fixed head 11 is provided with a upper static contact 111, and described upper static contact 111 is provided with the first circular concave of upper moving contact 21 sphere-contact of corresponding end on fusion tube 2.Be provided with elastic device between described first circular concave and upper static contact fixed head 11, the area of the first circular concave is no less than 50mm
2.
The described seat of honour 13 is provided with fixed contact 131, and described lower fixed contact is provided with the second circular concave with lower moving contact 22 sphere-contact of fusion tube 2 times corresponding end.Be provided with elastic device between second circular concave and the seat of honour 13, the area of the second circular concave is no less than 50mm
2.
Because fixed contact has elastic device, when closing a floodgate, elastic device is extruded, also can energy storage, therefore together provides dibit energy storage with latch plate, accelerates the falling speed of fusion tube 2 further.In addition, the contact area of fixed contact and moving contact strengthens, and decreases contact resistance, adds ampacity.
The material of the described seat of honour 13 is epoxy resin, compared to cast copper material, epoxy resin can reduce the generation of electric arc, and intensity is cheap higher than cast copper.
Described first latch plate 12, second latch plate 14 is respectively equipped with combined floodgate guiding mechanism 15.Described combined floodgate guiding mechanism 15 scribbles luminescent powder.Operating personnel stare at for a long time to aim at without the need to the effort that comes back when closing a floodgate and just can precisely close a floodgate, and it also avoid simultaneously and damage eyes because of switching current.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (11)
1. from an energy storage high-voltage drop type fuse cutout, it is characterized in that: the upper static contact fixed head of post insulator upper end fixed mount is provided with the first latch plate with fusion tube upper side Elastic Contact; The seat of honour of post insulator lower end fixed mount is provided with the second latch plate with fusion tube lower end side Elastic Contact; Described first latch plate and the second latch plate are compressed energy-storage state when fusion tube closes a floodgate, and are in stretching, extension and release energy state, make fusion tube accelerate when fusion tube fuses.
2. one according to claim 1 is from energy storage high-voltage drop type fuse cutout, it is characterized in that: described upper static contact fixed head is provided with a upper static contact, and described upper static contact is provided with the first circular concave of the upper moving contact sphere-contact of corresponding end on fusion tube.
3. one according to claim 2 is from energy storage high-voltage drop type fuse cutout, it is characterized in that: the area of described first circular concave is no less than 50mm
2.
4. one according to claim 2 is from energy storage high-voltage drop type fuse cutout, it is characterized in that: be provided with elastic device between described first circular concave and upper static contact fixed head.
5. one according to claim 1 is from energy storage high-voltage drop type fuse cutout, it is characterized in that: the described seat of honour is provided with fixed contact, and described lower fixed contact is provided with the second circular concave with the lower moving contact sphere-contact of corresponding end under fusion tube.
6. one according to claim 5 is from energy storage high-voltage drop type fuse cutout, it is characterized in that: the area of described second circular concave is no less than 50mm
2.
7. one according to claim 5 is from energy storage high-voltage drop type fuse cutout, it is characterized in that: be provided with elastic device between described second circular concave and the seat of honour.
8. one according to claim 1 is from energy storage high-voltage drop type fuse cutout, it is characterized in that: described fusion tube is fusible core formula fusion tube.
9. one according to claim 1 is from energy storage high-voltage drop type fuse cutout, it is characterized in that: the material of the described seat of honour is epoxy resin.
10. one according to claim 1 is from energy storage high-voltage drop type fuse cutout, it is characterized in that: described first latch plate, the second latch plate are respectively equipped with combined floodgate guiding mechanism.
11. one according to claim 10, from energy storage high-voltage drop type fuse cutout, is characterized in that: described combined floodgate guiding mechanism scribbles luminescent powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410843704.5A CN104576258A (en) | 2014-12-30 | 2014-12-30 | Self-energy-storage high-voltage drop blowout switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410843704.5A CN104576258A (en) | 2014-12-30 | 2014-12-30 | Self-energy-storage high-voltage drop blowout switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104576258A true CN104576258A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410843704.5A Pending CN104576258A (en) | 2014-12-30 | 2014-12-30 | Self-energy-storage high-voltage drop blowout switch |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002089165A1 (en) * | 2001-04-26 | 2002-11-07 | Hubbell Incorporated | Polymeric cutout assembly |
| US20090167479A1 (en) * | 2007-12-31 | 2009-07-02 | John Kesting | Fuse Cutout Assembly |
| CN201638780U (en) * | 2009-12-24 | 2010-11-17 | 苏刚印 | Drop type fuse |
| CN102789933A (en) * | 2012-08-03 | 2012-11-21 | 广西和谐电力科技有限公司 | Outdoor alternating-current high-voltage drop-out fuse |
| CN202712106U (en) * | 2012-08-03 | 2013-01-30 | 广西和谐电力科技有限公司 | Outdoor alternating-current high-voltage drop-out fuse |
| CN203085471U (en) * | 2013-02-21 | 2013-07-24 | 周海兵 | Outdoor high-voltage drop fuse |
| CN203312228U (en) * | 2013-06-30 | 2013-11-27 | 周海兵 | Fusing indication type high-voltage fuse |
| CN204271031U (en) * | 2014-12-30 | 2015-04-15 | 国家电网公司 | A kind of from energy storage high-voltage drop type fuse cutout |
-
2014
- 2014-12-30 CN CN201410843704.5A patent/CN104576258A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002089165A1 (en) * | 2001-04-26 | 2002-11-07 | Hubbell Incorporated | Polymeric cutout assembly |
| US20090167479A1 (en) * | 2007-12-31 | 2009-07-02 | John Kesting | Fuse Cutout Assembly |
| CN201638780U (en) * | 2009-12-24 | 2010-11-17 | 苏刚印 | Drop type fuse |
| CN102789933A (en) * | 2012-08-03 | 2012-11-21 | 广西和谐电力科技有限公司 | Outdoor alternating-current high-voltage drop-out fuse |
| CN202712106U (en) * | 2012-08-03 | 2013-01-30 | 广西和谐电力科技有限公司 | Outdoor alternating-current high-voltage drop-out fuse |
| CN203085471U (en) * | 2013-02-21 | 2013-07-24 | 周海兵 | Outdoor high-voltage drop fuse |
| CN203312228U (en) * | 2013-06-30 | 2013-11-27 | 周海兵 | Fusing indication type high-voltage fuse |
| CN204271031U (en) * | 2014-12-30 | 2015-04-15 | 国家电网公司 | A kind of from energy storage high-voltage drop type fuse cutout |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |
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| RJ01 | Rejection of invention patent application after publication |