CN202601547U - Novel outdoor AC (Alternating Current) high voltage drop-out fuse - Google Patents
Novel outdoor AC (Alternating Current) high voltage drop-out fuse Download PDFInfo
- Publication number
- CN202601547U CN202601547U CN2012202858367U CN201220285836U CN202601547U CN 202601547 U CN202601547 U CN 202601547U CN 2012202858367 U CN2012202858367 U CN 2012202858367U CN 201220285836 U CN201220285836 U CN 201220285836U CN 202601547 U CN202601547 U CN 202601547U
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- China
- Prior art keywords
- fusion tube
- high voltage
- voltage drop
- fuse
- novel outdoor
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- Expired - Fee Related
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Abstract
The utility model discloses a novel outdoor AC (Alternating Current) high voltage drop-out fuse, wherein one end of a china bottle of the fuse is connected with one end of a rainproof cap, one end of the rainproof cap is connected with an upper wiring snap gauge assembly through a bolt, the other end of the rainproof cap is connected with a spring, the spring is connected with an upper contact terminal, the upper contact terminal is connected with a metal cap, the metal cap on one end of a fusion tube is fixedly connected with a hook and an upper ring, the other end of the fusion tube is connected with a lower ring through a bolt, the lower ring is fixedly connected with a lower wiring snap gauge assembly through a bolt, and the lower wiring snap gauge assembly is connected with the other end of the fusion tube. The novel outdoor AC high voltage drop-out fuse has the characteristics of simple structure, convenience in installation, long service life, simple and reliable operation, non-generation of external electric arc and non-burning of contact terminal, the novel outdoor AC high voltage drop-out fuse exhausts in single direction to prevent the rain invasion and avoid the short circuit threat of the free gas on the upper layer circuit, the fusion tube is uvioresistant, and the structure is firm. The novel outdoor AC high voltage drop-out fuse is extensively applied on outdoor overhead power distribution systems of 10-12KV.
Description
Technical field
The utility model relates to the outdoor AC fuse, is specifically related to a kind of novel outdoor ac high voltage drop fuse.
Background technology
The high-tension fuse that uses at China 10kV electrical network at present mainly contains RW7, RW10, RW11 (hereinafter to be referred as RW series), and all each is different for the product type that uses in all parts of the country.In addition; The RW series of products are mentalities of designing of the former Soviet Union; Exist that the fuse contact point is little, not firm, the fusion tube of contact shortcoming such as anti-rainwater, the fuse that on city senior middle school is seen everywhere electric pole, has rusty stains not only influences the electrical property of product; And it is extremely inharmonious with surrounding environment, very not attractive in appearance.The contact way of contact is a buckle structure, and the contact reliability is low, and the nature obscission can appear in the place big at wind.Simultaneously, also there is following defective:
(1), the contact way of contact is buckle structure, the contact reliability is low, the nature obscission can appear in the place big at wind.
(2), exhaust mode is bi-directional venting, it is not enough to cut-off little overload current arc-extinguishing tube internal pressure, can not cut-off the glitch electric current below 20% rated short circuit drop-out current.
(3), the bi-directional venting fusion tube receives washing away of rainwater easily, influences insulation property, reduces product useful life.
(4), the RW7 type do not have arc extinguishing design, though the RW11 type has the arc extinguishing design, the arc extinguishing material is very easily aging out of doors, influences the useful life of product;
(5), RW series porcelain insulating spare adopts hollow design, hollow easy formation inner surface insulation flashover generation.
(6), the fusion tube of RW series of products adopts cloth around pipe, rainproof water poor performance does not possess anti-ultraviolet ability, product is short useful life, is widely used on 10～12 kilovolts the outdoor aerial distribution system.
Summary of the invention
The purpose of the utility model provides a kind of simple in structure, and is easy for installation, long service life, and operation is simple and reliable, do not produce outside electric arc, can not burn out a kind of novel outdoor ac high voltage drop fuse of contact.
In order to overcome the deficiency of prior art; The technical scheme of the utility model is to solve like this: a kind of novel outdoor ac high voltage drop fuse; This fuse by porcelain vase, go up wiring card board component, rainhat, spring, upper contact head, metal cap, pull hook, go up ring, fusion tube, down ring, the wiring card board component is formed down; The special character of the utility model is that an end of said porcelain vase is connected with rainhat one end, and said rainhat one end is connected with last wiring card board component through bolt, and the said rainhat other end is connected with spring; Said spring is connected with upper contact head; Said upper contact head is connected with metal cap, and the metal cap of said fusion tube one end is fixedly connected with last ring with pull hook, and the said fusion tube other end is connected with following ring through bolt; Said ring down is fixedly connected with following wiring card board component through bolt, and said wiring card board component down is connected with the fusion tube other end.
The utility model compared with prior art has following advantage: the contact contact mode that adopts convex-concave to cooperate, and windproof dustproof, the reliable contact when having guaranteed the product operate as normal; Contact adopts by silver-colored production technology, has improved the electric conductivity of product greatly; Take unidirectional downward exhaust mode, can prevent the entering of rainwater, can avoid the influence of free gas again upper layer circuit; Arc extinguishing adopts and installs the goat's horn structure additional, and arc extinction performance is stable, long service life; Adopt the vulcan fibre fusion tube of high-quality, mechanical strength is high, and shock resistance, good toughness when cut-offfing fault, consume and lack, and the life-span is long, is difficult for the characteristics of carbonization, waterproof, antiultraviolet, increases the useful life of product; Porcelain spare adopts real mandrel structure, when improving mechanical performance, has also improved the external insulation electrical property of product, and product is short useful life, is widely used on 10～12 kilovolts the outdoor aerial distribution system.
The environmental condition that product is suitable for
1. ambient temperature-40 ゜ C～+ 40 ゜ C
2. height above sea level is below 2500 meters
3. wind speed is not more than 35m/s
4. earthquake intensity is no more than 8 grades
The inapplicable environmental condition of product
1. burning or explosion hazard area are arranged
2. strenuous vibration is arranged or impact the place
3. conduction chemical gas active region is arranged
Important technological parameters and characteristics
| Rated voltage (kV) | 12 |
| Rated current (A) | 100 200 |
| Specified drop-out current (kA) | 12.5 |
| Minimum drop-out current (A) | 18A |
| Power frequency dry withstand voltage (kV) effective value | 42 |
| Power frequency wet withstand voltage (kV) effective value | 36 |
| Whole wave impact withstand voltage (kV) effective value | 75 |
This product meets the regulation of GB15166.3-2008 " ac high-voltage fuse, expulsion fuse ".
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the amplification contour structures sketch map of Fig. 1.
The explanation 1 of figure elements title, porcelain vase, 2, go up the wiring card board component, 3, rainhat, 4, spring, 5, upper contact head, 6, metal cap, 7, pull hook, 8, go up ring, 9, fusion tube, 10, ring down, 11, wiring card board component down.
Embodiment
Accompanying drawing is the embodiment of the utility model.
Below in conjunction with accompanying drawing summary of the invention is done further explain:
With reference to Fig. 1, shown in Figure 2; A kind of novel outdoor ac high voltage drop fuse by porcelain vase, go up wiring card board component, rainhat, spring, upper contact head, metal cap, pull hook, go up ring, fusion tube, down ring, the wiring card board component is formed down; One end of wherein said porcelain vase 1 is connected with rainhat 3 one ends, and said rainhat 3 one ends are connected with last wiring card board component 2 through bolt, and said rainhat 3 other ends are connected with spring 4; Said spring 4 is connected with upper contact head 5; Said upper contact head 5 is connected with metal cap 6, and the metal cap 6 of said fusion tube 9 one ends is fixedly connected with last ring 8 with pull hook 7, and said fusion tube 9 other ends are connected with following ring 10 through bolt; Said ring 10 down is fixedly connected with following wiring card board component 11 through bolt, and said wiring card board component 11 down is connected with fusion tube 9 other ends.
Install
Should melt be strained (making melt approximately receive the pulling force about 24.5N) when (1) installing, otherwise cause the contact heating easily.(2) be installed in should be solid and reliable on the cross-arm (framework) for fuse, and any rocking or swag phenomenon can not be arranged.(3) fusion tube should have downward 25 ° ± 2 ° inclination angle, and fusion tube can rely on own wt to fall rapidly when fusing in order to melt.(4) fuse should be installed in overhead that vertical range is not less than on the cross-arm (framework) of 4m, if be installed in the distribution transformer top, should keep the horizontal range more than the 0.5m with the outermost profile border of distribution transforming, and the fusion tube of making provision against emergencies drops and causes other accidents.(5) length of fusion tube should be adjusted moderately, and the back duckbilled tongue that require to close a floodgate can fasten more than 2/3rds of lengths of contacts, in order to avoid be in operation the misoperation fallen voluntarily takes place, and fusion tube also can not the dieback duckbilled, can not in time fall to prevent melt fusing back fusion tube.(6) employed melt must be the standardized product of regular producer, and has certain mechanical strength, generally requires the minimum pulling force that can bear more than the 147N of melt.(7) the 10kV fuse switch is installed in the open air, requires phase spacing greater than 70cm.
Operation
Carry out (people monitoring, one man operation) by two people when (1) operating, but must wear insulating gloves, wear insulation boots, wear spectacles, the qualified insulating rod operation that the working voltage grade is complementary, quiescing under the weather of thunder and lightning or heavy rain through pass the test.(2) when operating a switch operation, general provision draws leeward limit phase again for phase in the middle of breaking earlier, breaks the limit phase of facining the wind at last.This is because distribution transformer changes two-phase operation into by three-phase operation, and the arc spark that phase time is produced in the middle of breaking is minimum, the unlikely phase fault that causes.Next is to break leeward limit phase, because middle phase is drawn back, leeward limit has increased by one times with windward side distance mutually, even there is overvoltage to produce, causes the possibility of phase fault also very little.Break the windward side phase time at last, capacitance current is over the ground only arranged, the electric spark of generation is then very slight.Opposite when operating sequence is operated a switch when (3) closing a floodgate, close the windward side phase earlier, close leeward limit phase again, phase in the middle of closing at last.(4) the operation fusion tube is a frequent project, notes making contact overheated less than just causing the contact burn to cause loose contact, and spring annealing impels the contact contact more bad, forms vicious circle.So, draw, the appropriateness of will exerting oneself when closing fusion tube, after getting togather, scrutiny duckbilled tongue can tightly fasten tongue length more than 2/3rds, available brake pull-rod hooks duckbilled, and several examination is drawn gently down to pressing down, and whether inspection gets togather.Fail during combined floodgate to put in place or do not close firmly, fuse upper static contact insufficient pressure very easily causes contact burn or fusion tube to fall voluntarily.
Safeguard
It is suitable whether utensil rated current and melt and the load current value of 1. fusing matees, if mismate must be adjusted.2. each operation of fuse must be careful conscientious, can not be careless, and particularly closing operation must make dynamic and static contact contact good.3. must use standard melt in the fusion tube, forbid replacing melt, more ban the use of copper wire, aluminium wire and iron wire the contact colligation is lived to use with the copper wire aluminium wire.4. to the fuse of new installation or replacing, the strict operation of checking and accepting, must satisfy the rules quality requirement, the fusion tube setting angle reaches the inferior horn that inclines about 25 °.The same specification melt that 5. should more renew after the melt fusing can not connect the melt after the fusing and reinstalls fusion tube and continue to use.6. should regularly make an inspection tour, be no less than night inspection one time in every month, check to have or not discharge spark and poor contact phenomenon that discharge is arranged, can will arrange as early as possible to handle with the sound of neighing to fuse.
Operation principle:
Heater element (being called melt or fuse) the weakest is set in circuit artificially, when the electric current that flows through surpasses certain numerical value, melt heating fusing; Produce electric arc, under the arc-extinguishing medium effect, blow-out fuses around; Cut-off electrical equipment, protect other electric equipment.
Novel outdoor ac high voltage drop fuse main feature:
(1), the contact contact mode that adopts convex-concave to cooperate, the reliable contact when having guaranteed the product operate as normal;
(2), contact adopts by silver-colored production technology, improved the electric conductivity of product greatly;
(3), the design take unidirectional downward exhaust mode, can prevent the entering of rainwater, can avoid the influence of free gas again to upper layer circuit.
(4), arc extinguishing adopts and to install the goat's horn structure additional, arc extinction performance is stable, long service life.
(5), adopt the vulcan fibre fusion tube of high-quality, mechanical strength is high, shock resistance, good toughness when cut-offfing fault, consume fewly, the life-span is long, is difficult for the characteristics of carbonization, waterproof, antiultraviolet, the useful life of increase product.
(6), porcelain spare adopts real mandrel structure, when improving mechanical performance, also improved the external insulation electrical property of product.
Claims (1)
1. novel outdoor ac high voltage drop fuse; This fuse by porcelain vase, go up wiring card board component, rainhat, spring, upper contact head, metal cap, pull hook, go up ring, fusion tube, down ring, the wiring card board component is formed down; An end that it is characterized in that said porcelain vase (1) is connected with rainhat (3) one ends; Said rainhat (3) one ends are connected with last wiring card board component (2) through bolt; Said rainhat (3) other end is connected with spring (4), and said spring (4) is connected with upper contact head (5), and said upper contact head (5) is connected with metal cap (6); Said fusion tube (9) one end metal caps (6) are fixedly connected with last ring (8) with pull hook (7); Said fusion tube (9) other end is connected with encircling (10) down through bolt, and said ring (10) down is fixedly connected with following wiring card board component (11) through bolt, and said wiring card board component (11) down is connected with fusion tube (9) other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202858367U CN202601547U (en) | 2012-06-18 | 2012-06-18 | Novel outdoor AC (Alternating Current) high voltage drop-out fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202858367U CN202601547U (en) | 2012-06-18 | 2012-06-18 | Novel outdoor AC (Alternating Current) high voltage drop-out fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202601547U true CN202601547U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202858367U Expired - Fee Related CN202601547U (en) | 2012-06-18 | 2012-06-18 | Novel outdoor AC (Alternating Current) high voltage drop-out fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202601547U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632851A (en) * | 2016-03-10 | 2016-06-01 | 桐乡市乌镇吴越旅游咨询工作室 | Fuse protector with novel double-layer arc-extinguishing tube |
| CN114203496A (en) * | 2021-12-07 | 2022-03-18 | 广西电网有限责任公司玉林陆川供电局 | Drop-out fusing device of multiple type of fuse |
-
2012
- 2012-06-18 CN CN2012202858367U patent/CN202601547U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632851A (en) * | 2016-03-10 | 2016-06-01 | 桐乡市乌镇吴越旅游咨询工作室 | Fuse protector with novel double-layer arc-extinguishing tube |
| CN114203496A (en) * | 2021-12-07 | 2022-03-18 | 广西电网有限责任公司玉林陆川供电局 | Drop-out fusing device of multiple type of fuse |
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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: 20121212 Termination date: 20150618 |
|
| EXPY | Termination of patent right or utility model |