CN203312223U - Outdoor alternating-current high-pressure expulsion fuse - Google Patents
Outdoor alternating-current high-pressure expulsion fuse Download PDFInfo
- Publication number
- CN203312223U CN203312223U CN2013202984650U CN201320298465U CN203312223U CN 203312223 U CN203312223 U CN 203312223U CN 2013202984650 U CN2013202984650 U CN 2013202984650U CN 201320298465 U CN201320298465 U CN 201320298465U CN 203312223 U CN203312223 U CN 203312223U
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- Prior art keywords
- fuse
- connecting plate
- electrode connecting
- static contact
- tube
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- 230000003068 static effect Effects 0.000 claims abstract description 38
- 239000012212 insulator Substances 0.000 claims abstract description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052709 silver Inorganic materials 0.000 claims abstract description 6
- 239000004332 silver Substances 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- 238000004880 explosion Methods 0.000 abstract description 4
- 239000011152 fibreglass Substances 0.000 abstract 1
- 238000007747 plating Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001125877 Gobio gobio Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses an outdoor alternating-current high-pressure expulsion fuse. The main points of the technical scheme of the utility model comprise: that the fuse comprises a supporting insulator, a fuse tube, an upper electrode connecting plate, a lower electrode connecting plate, a static contact piece which is electrically connected with the upper electrode connecting plate, a pressure-releasing cap which is disposed at the upper end of the fuse tube and electrically connected with the static contact piece, and a fuse wire which is disposed inside the fuse tube, wherein the upper electrode connecting plate and the lower electrode connecting plate are respectively disposed at two ends of the supporting insulator and used for wiring; that that one end of the fuse wire is compressed through the pressure-releasing cap which is disposed at the upper end of the fuse tube, and the other end, opposite to the end, of the fuse wire is fixed on the lower electrode connecting plate through a board with a small spring; that an inner tube cavity of the fuse tube is a gradually-expanding type tube cavity; that the inner tube cavity of the fuse tube expands from the middle part to both ends of the fuse tube gradually; that the fuse tube is made of fiber glass filaments; that a rain cover is disposed on the static contact piece; and that contact surfaces of the static contact piece and the pressure-releasing cap are respectively provided with a silver plating layer. The outdoor alternating-current high-voltage expulsion fuse improves compressive strength of the fuse tube, can effectively prevent tube explosion in a condition of instant burst of an arc-extinguishing airflow, and prolongs the service life of the fuse tube.
Description
Technical field
The utility model relates to a kind of fuse, is specifically related to a kind of outdoor AC high-voltage injection type fuse.
Background technology
The outdoor high-voltage alternating current fuse switch consists of following several parts, includes and props up
Post insulator, cartridge fuse, post insulator be fixed with respectively up and down top electrode connecting plate and bottom electrode connecting plate, fixedly static contact and rain cover successively above the top electrode connecting plate, between static contact and rain cover, be provided with spring, on the bottom electrode connecting plate, be fixed with support and with the gudgeon of support assorted with the plate of sending out of little spring, in cartridge fuse, be provided with fuse, fuse one end compresses by the pressure releasing cap that the cartridge fuse upper end arranges, the fuse other end on the other side is fixed on the bottom electrode connecting plate through sending out plate, and fuse is in tension.
Existing product is structurally taked the method for exhaust and fuse suit auxiliary extinction of arc pipe step by step, and exhaust is to add the pressure release sheet in the cartridge fuse upper end step by step, then compresses with pressure releasing cap.While cut-offfing small electric stream, the pressure release sheet is failure to actuate, and gas is only discharged from lower port, has guaranteed that enough gas pressures carry out blow-out; Cut-off less electric current and produce gas blowing-out electric arc by the auxiliary extinction of arc pipe be sleeved on fuse, solve the contradiction of cut-offfing current; While cut-offfing Short-Circuit High Current, gas pressure is large, and upper end pressure release sheet and pressure releasing cap are rushed to open, and forms upper and lower side exhaust simultaneously.But its cartridge fuse adopts the injection tube chamber of unified caliber, and space is narrow, can not meet the demand that arc extinguishing air-flow instantaneous burst is sprayed, particularly for the not high cartridge fuse of some mechanical performances, pipe explosion accident is unavoidable under the pressure of instantaneous burst.
The utility model content
Deficiency for the prior art existence, the utility model provides a kind of outdoor AC high-voltage injection type fuse, this outdoor AC high-voltage injection type fuse has improved the compression strength of cartridge fuse, can effectively avoid booster under the arc extinguishing air-flow of instantaneous burst, extends the useful life of fuse.
For achieving the above object, the utility model provides following technical scheme: a kind of outdoor AC high-voltage injection type fuse, comprise post insulator, cartridge fuse, be arranged on top electrode connecting plate and the bottom electrode connecting plate of post insulator two ends for wiring, the static contact be electrically connected to the top electrode connecting plate, be arranged on the pressure releasing cap that the cartridge fuse upper end is electrically connected to static contact, be arranged on the fuse in cartridge fuse, described fuse one end compresses by the pressure releasing cap that the cartridge fuse upper end arranges, the other end on the other side is fixed on the bottom electrode connecting plate through the plate of sending out with little spring, the interior tube chamber of described cartridge fuse is expanding tube chamber gradually, in cartridge fuse, tube chamber is expanded to two ends step by step from mid portion.
By adopting technique scheme, when little fault, fuse failure, pressure releasing cap is motionless, and arc extinguishing gases is only discharged from the cartridge fuse lower port, has guaranteed that enough gas pressures carry out blow-out; When cut-offfing Short-Circuit High Current, gas pressure is large, the pressure releasing cap of cartridge fuse upper end is rushed to open, form upper and lower side exhaust simultaneously, because the interior tube chamber of cartridge fuse is expanding tube chamber gradually, in cartridge fuse, tube chamber is expanded to two ends step by step from mid portion, for the strong arc extinguishing air-flow of instantaneous burst provides enough outburst spaces, to avoid the cartridge fuse air blast outburst of section within it, impact lower unexpected explosion, improved the compression strength of cartridge fuse, can effectively avoid booster under the arc extinguishing air-flow of instantaneous burst, extend the useful life of fuse.
The utility model further is set to, and described cartridge fuse is made by glass fiber.
By adopting technique scheme, adopt the high strength cartridge fuse, material is to have fire-retardant glass fiber, more reliable mechanical performance characteristic can be provided, the specific coatings that has anti-ultraviolet aging on cartridge fuse, the long-term use, maintain the cartridge fuse mechanical performance constant, cut-offs reliably the short circuit current performance for cartridge fuse provides.
The utility model further is set to, and described static contact top is provided with rain cover, is provided with spring between rain cover and static contact.
By adopting technique scheme, the static contact top is provided with rain cover, avoids rainy day, and static contact and pressure releasing cap directly are subject to the erosion of rainwater, cause static contact and pressure releasing cap to get rusty or loose contact, even cause short circuit, and circuit is produced to harmful effect; Between rain cover and static contact, be provided with spring, can static contact be compressed to pressure releasing cap by spring on the one hand, make static contact tightr with being electrically connected to of cartridge fuse, avoid loose contact to affect circuit, when cartridge fuse fused, spring produced a downward elastic force to cartridge fuse, impels cartridge fuse to drop down rapidly on the other hand, make static contact and pressure releasing cap form obvious sublevel interval, by circuitry cuts.
The utility model further is set to, and is provided with silver coating on the contact-making surface of described static contact and pressure releasing cap.
By adopting technique scheme, on the contact-making surface of static contact and pressure releasing cap, be provided with silver coating, guarantee that major loop resistance is lower, reduce the heating of contact portion, make the product operation more reliable.
The utility model further is set to, and the Luminous mark label are posted on described cartridge fuse surface.
By adopting technique scheme, be beneficial to operating personnel's night time operation, alleviate its labour intensity.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model outdoor AC high-voltage injection type fuse;
Fig. 2 is the utility model cartridge fuse inner chamber schematic diagram.
Reference numeral: 1, post insulator; 2, cartridge fuse; 31, top electrode connecting plate; 32, bottom electrode connecting plate; 4, static contact; 5, pressure releasing cap; 6, fuse; 7, send out plate; 8, rain cover; 9, spring.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model outdoor AC high-voltage injection type fuse embodiment is described further.
A kind of outdoor AC high-voltage injection type fuse, comprise post insulator 1, cartridge fuse 2, be arranged on top electrode connecting plate 31 and the bottom electrode connecting plate 32 of post insulator 1 two ends for wiring, the static contact 4 be electrically connected to top electrode connecting plate 31, be arranged on the pressure releasing cap 5 that cartridge fuse 2 upper ends are electrically connected to static contact 4, be arranged on the fuse 6 in cartridge fuse 2, fuse 6 one ends compress by the pressure releasing cap 5 that cartridge fuse 2 upper ends arrange, the other end on the other side is fixed on bottom electrode connecting plate 32 through the plate 7 of sending out with little spring 9, the interior tube chamber of cartridge fuse 2 is expanding tube chamber gradually, the interior tube chamber of cartridge fuse 2 is expanded to two ends step by step from mid portion.
By adopting technique scheme, when little fault, fuse 6 fusing, pressure releasing cap 5 is motionless, and arc extinguishing gases is only discharged from cartridge fuse 2 lower port, has guaranteed that enough gas pressures carry out blow-out, when cut-offfing Short-Circuit High Current, gas pressure is large, the pressure releasing cap 5 of cartridge fuse 2 upper ends is rushed to open, form upper and lower side exhaust simultaneously, because the interior tube chamber of cartridge fuse 2 is expanding tube chamber gradually, the interior tube chamber of cartridge fuse 2 is expanded to two ends step by step from mid portion, for the strong arc extinguishing air-flow of instantaneous burst provides enough outburst spaces, to avoid the cartridge fuse 2 air blast outburst of section within it, impact lower unexpected explosion, improved the compression strength of cartridge fuse 2, can effectively avoid booster under the arc extinguishing air-flow of instantaneous burst, extend the useful life of fuse, as best preferred version of the present utility model, the interior tube chamber of cartridge fuse 2 can be the hourglass shape, can be also steppedly from mid portion, to expand step by step to two ends.
Described cartridge fuse 2 is made by glass fiber.
By adopting technique scheme, adopt high strength cartridge fuse 2, material is to have fire-retardant glass fiber, more reliable mechanical performance characteristic can be provided, the specific coatings that has anti-ultraviolet aging on cartridge fuse 2, the long-term use, maintain cartridge fuse 2 mechanical performances constant, cut-offs reliably the short circuit current performance for cartridge fuse 2 provides.
Described static contact 4 tops are provided with rain cover 8, are provided with spring 9 between rain cover 8 and static contact 4.
By adopting technique scheme,, static contact 4 tops are provided with rain cover 8, avoid rainy day, static contact 4 and pressure releasing cap 5 directly are subject to the erosion of rainwater, cause static contact 4 and pressure releasing cap 5 to get rusty or loose contact, even cause short circuit, circuit is produced to harmful effect; Between rain cover 8 and static contact 4, be provided with spring 9, can static contact 4 be compressed to pressure releasing cap 5 by spring 9 on the one hand, make static contact 4 tightr with being electrically connected to of cartridge fuse 2, avoid loose contact to affect circuit, when cartridge fuse 2 fusing, 9 pairs of cartridge fuses of spring 2 produce a downward elastic force, impel cartridge fuse 2 to drop down rapidly on the other hand, make static contact 4 and pressure releasing cap 5 form obvious sublevel interval, by circuitry cuts.
On the contact-making surface of described static contact 4 and pressure releasing cap 5, be provided with silver coating.
By adopting technique scheme, on the contact-making surface of static contact 4 and pressure releasing cap 5, be provided with silver coating, guarantee that major loop resistance is lower, reduce the heating of contact portion, make the product operation more reliable.
The Luminous mark label are posted on described cartridge fuse 2 surfaces.
By adopting technique scheme, be beneficial to operating personnel's night time operation, alleviate its labour intensity.
The above is only preferred implementation of the present utility model, and protection range of the present utility model also not only is confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not break away under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. outdoor AC high-voltage injection type fuse, comprise post insulator, cartridge fuse, be arranged on top electrode connecting plate and the bottom electrode connecting plate of post insulator two ends for wiring, the static contact be electrically connected to the top electrode connecting plate, be arranged on the pressure releasing cap that the cartridge fuse upper end is electrically connected to static contact, be arranged on the fuse in cartridge fuse, described fuse one end compresses by the pressure releasing cap that the cartridge fuse upper end arranges, the other end on the other side is fixed on the bottom electrode connecting plate through the plate of sending out with little spring, it is characterized in that: the interior tube chamber of described cartridge fuse is expanding tube chamber gradually, in cartridge fuse, tube chamber is expanded to two ends step by step from mid portion.
2. a kind of outdoor AC high-voltage injection type fuse according to claim 1, it is characterized in that: described cartridge fuse is made by glass fiber.
3. a kind of outdoor AC high-voltage injection type fuse according to claim 2, is characterized in that: above described static contact, be provided with rain cover, be provided with spring between described rain cover and static contact.
4. a kind of outdoor AC high-voltage injection type fuse according to claim 3, is characterized in that: be provided with silver coating on the contact-making surface of described static contact and pressure releasing cap.
5. a kind of outdoor AC high-voltage injection type fuse according to claim 4, it is characterized in that: the Luminous mark label are posted on described cartridge fuse surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202984650U CN203312223U (en) | 2013-05-28 | 2013-05-28 | Outdoor alternating-current high-pressure expulsion fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202984650U CN203312223U (en) | 2013-05-28 | 2013-05-28 | Outdoor alternating-current high-pressure expulsion fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312223U true CN203312223U (en) | 2013-11-27 |
Family
ID=49618410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202984650U Expired - Fee Related CN203312223U (en) | 2013-05-28 | 2013-05-28 | Outdoor alternating-current high-pressure expulsion fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312223U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108807107A (en) * | 2018-09-04 | 2018-11-13 | 广东电网有限责任公司 | Fuse cutout and electrical equipment |
| CN110970276A (en) * | 2020-01-18 | 2020-04-07 | 坦帕（福建）电气有限公司 | Drop-out fuse |
| CN114975034A (en) * | 2022-05-01 | 2022-08-30 | 国网辽宁省电力有限公司电力科学研究院 | Novel drop-out fuse fusion tube |
-
2013
- 2013-05-28 CN CN2013202984650U patent/CN203312223U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108807107A (en) * | 2018-09-04 | 2018-11-13 | 广东电网有限责任公司 | Fuse cutout and electrical equipment |
| CN108807107B (en) * | 2018-09-04 | 2024-01-09 | 广东电网有限责任公司 | Fuse switch and electrical equipment |
| CN110970276A (en) * | 2020-01-18 | 2020-04-07 | 坦帕（福建）电气有限公司 | Drop-out fuse |
| CN114975034A (en) * | 2022-05-01 | 2022-08-30 | 国网辽宁省电力有限公司电力科学研究院 | Novel drop-out fuse fusion tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |