CN102347179A - High-voltage-dropout-type fuse cutout - Google Patents
High-voltage-dropout-type fuse cutout Download PDFInfo
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- CN102347179A CN102347179A CN2010102459061A CN201010245906A CN102347179A CN 102347179 A CN102347179 A CN 102347179A CN 2010102459061 A CN2010102459061 A CN 2010102459061A CN 201010245906 A CN201010245906 A CN 201010245906A CN 102347179 A CN102347179 A CN 102347179A
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- moving contact
- fuse
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- contact
- extinguish chamber
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Abstract
The invention discloses a high-voltage-dropout-type fuse cutout comprising a fuse tube, a fuse wire, a fixed contact, a fixed contact support, a pillar insulator, a moving contact, a moving contact support and an arcing shield, wherein the fixed contact is arranged on the fuse tube; the fixed contact support is arranged at one end of the pillar insulator; the moving contact is arranged at the other end of the pillar insulator; the moving contact support is arranged on the fuse tube; the moving contact is also provided with the arcing shield; the fuse wire is used for tensioning the moving contact on the moving contact support; the fixed contact support and the moving contact are provided with a wire connecting bolt respectively; and the moving contact support end of the fuse tube is also provided with a flow guide tube, and one end of the flow guide tube is provided with a cover. Because the flow guide tube and the cover used for covering the end of the flow guide tube are arranged at one side of the arcing shield of the fuse tube in the scheme, the damages to the arcing shield caused by arcs can be reduced, thus the arcing shield can be repeatedly used.
Description
Technical field
The present invention relates to a kind of fuse, especially a kind of high voltage drop-out type fuse cutout that can reduce electric arc harm belongs to the electric equipment technical field.
Background technology
China's electric power system at present generally adopts insulated overhead line in urban distribution network; Its use amount accounts for more than 70% of distribution; The high voltage drop-out type fuse cutout that in insulated overhead line, is widely used is used to cut-off the load current of power consumption equipment and overload protection is provided for power consumption equipment; And existing high voltage drop-out type fuse cutout comprises fusion tube, fuse, fixed contact, stationary contact bracket, post insulator, moving contact, moving contact rack, arc-extinguish chamber; Said fixed contact is arranged on the fusion tube, and said stationary contact bracket is arranged on post insulator one end; Said moving contact is arranged on the post insulator other end; Said moving contact rack is arranged on the fusion tube; Also be provided with arc-extinguish chamber on the said moving contact; On moving contact rack, said stationary contact bracket, moving contact are provided with connection bolt to said fuse the moving contact tension; Can produce electric arc during fuse failure, ejection in the calm pipe of electric arc is sprayed onto on the arc-extinguish chamber, and producing an electric arc usually will damage arc-extinguish chamber, need change arc-extinguish chamber during the maintenance circuit.
Summary of the invention
Technical problem to above-mentioned existence the objective of the invention is: proposed a kind of high voltage drop-out type fuse cutout that can be repeatedly used arc-extinguish chamber.
Technical solution of the present invention is achieved in that a kind of high voltage drop-out type fuse cutout, comprises fusion tube, fuse, fixed contact, stationary contact bracket, post insulator, moving contact, moving contact rack, arc-extinguish chamber; Said fixed contact is arranged on the fusion tube, and said stationary contact bracket is arranged on post insulator one end; Said moving contact is arranged on the post insulator other end; Said moving contact rack is arranged on the fusion tube; Also be provided with arc-extinguish chamber on the said moving contact; On moving contact rack, said stationary contact bracket, moving contact are provided with connection bolt to said fuse the moving contact tension; The moving contact rack end of said fusion tube also is provided with a mozzle, and the end of mozzle is provided with lid.
Preferably, said post insulator adopts synthetic insulator.
Preferably, said stationary contact bracket, moving contact are provided with connection bolt and are 2.
Because the utilization of technique scheme, the present invention compared with prior art has advantage:
The present invention has increased mozzle; When fuse failure, electric arc be can in fusion tube, produce, thereby high pressure draught and upwards impact produced, because the upper end is lived by the mozzle cap seal, results in stream sprays to the lower end, blows out electric arc; Fusion tube selects for use high flame retardant type, high-strength material to synthesize, and inwall is selected the high-quality gas exhausted material, and its exhaust duct indoor design is the nonlinear geometry form, and the successful arc extinguishing when having reached high cut-offfing has guaranteed specified high-current on-off; See that on the whole the end of arc-extinguish chamber grows one section than the end of mozzle lid, in case the mozzle lid is upwards broken through by high pressure draught, the air-flow of ejection will have influence on and damage arc-extinguish chamber; After increasing mozzle, make the distance between the end of end and mozzle lid of arc-extinguish chamber very approaching, can not influence and damage arc-extinguish chamber even guaranteed that the mozzle lid is broken through also; Strengthened the arc extinguishing ability, when fuse carries out the pulling load operation,, can produce electric arc, fragile moving contact at contact region in the moment of drawing back fuse; After increasing arc-extinguish chamber, electric arc can be directed in the arc-extinguish chamber, and in the elongate slit of arc-extinguish chamber, is elongated, and produces gas simultaneously, when current over-zero, with arc extinction.Its arc-extinguish chamber is selected high burning-point arc control device design for use, and has antiultraviolet, anti-flammability; High strength is prone to performance characteristics such as gas production, and spout adopts the abnormity design; Guarantee the reliable arc extinguishing of the drop-down load operation of specified big electric current, protected moving contact not to be damaged, prolonged the useful life of fuse; Post insulator adopts synthetic insulator; Because cement casting is used in the mounting panel of porcelain insulator and installation foot position; Be subjected to the influence of climatic environments such as temperature bigger; Be prone to loosening; Easy corrosion of link and fracture; Influence is normal to be used, and its Heavy Weight, volume big, be prone to crackedly, make it be difficult for transportation and install.Synthetic insulator has good pollution performance, has significantly reduced cleaning and maintenance to insulator, and has improved pollution flashover voltage; And its size is little, in light weight; Shockproof and anti-brittle failure performance is good, more helps transportation and installs, and also has anti-corrosion damage, does not play performance characteristics such as trace.In adopting, synthetic insulator buries bolt technology, the anti-embrittlement when having guaranteed the antirust and blasting operation of link, and its durability and toughness strengthen than traditional porcelain pillar greatly, and fail safe significantly improves.The synthetic insulator material adopts special proportioning, makes the performances such as anti-aging, anti-electrocorrosion, antiultraviolet of synthetic insulator overcoat improve its more Green Product and recyclable utilization simultaneously greatly; Increased the two ends connection bolt.Every end is if having only a connection bolt, in case come in contact bad even during the phenomenon of breaking off, will influence the operation of whole piece circuit, is prone to produce serious consequence; Therefore, every end increases a connection bolt, has strengthened switching performance greatly, makes the fuse operation more stable, has guaranteed the normal operation of circuit.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Accompanying drawing 1 is the stereogram of high voltage drop-out type fuse cutout of the present invention;
Accompanying drawing 2 is the front view of high voltage drop-out type fuse cutout of the present invention;
Wherein: 1, fusion tube; 2, fuse; 3, fixed contact; 4, stationary contact bracket; 5, post insulator; 6, moving contact; 7, moving contact rack; 8, arc-extinguish chamber; 9, mozzle; 10, lid; 11, connection bolt.
Embodiment
Below in conjunction with accompanying drawing the present invention is described.
Be depicted as a kind of high voltage drop-out type fuse cutout of the present invention like accompanying drawing 1,2, comprise fusion tube 1, fuse 2, fixed contact 3, stationary contact bracket 4, post insulator 5, moving contact 6, moving contact rack 7, arc-extinguish chamber 8; Said fixed contact 3 is arranged on the fusion tube 1, and said stationary contact bracket 4 is arranged on post insulator 5 one ends; Said moving contact 6 is arranged on post insulator 5 other ends; Said moving contact rack 7 is arranged on the fusion tube 1; Also be provided with arc-extinguish chamber 8 on the said moving contact 6; On moving contact rack 7, said stationary contact bracket 4, moving contact 6 are provided with connection bolt 11 to said fuse 2 moving contact 6 tension; The moving contact rack end of said fusion tube 1 also is provided with a mozzle 9, and the end of mozzle 9 is provided with lid 10; Said post insulator 5 adopts synthetic insulator; Said stationary contact bracket 4, moving contact 6 are provided with connection bolt 11 and are 2.
Because the utilization of technique scheme, the present invention compared with prior art has advantage:
The present invention has increased mozzle; When fuse failure, electric arc be can in fusion tube, produce, thereby high pressure draught and upwards impact produced, because the upper end is lived by the mozzle cap seal, results in stream sprays to the lower end, blows out electric arc; Fusion tube selects for use high flame retardant type, high-strength material to synthesize, and inwall is selected the high-quality gas exhausted material, and its exhaust duct indoor design is the nonlinear geometry form, and the successful arc extinguishing when having reached high cut-offfing has guaranteed specified high-current on-off; See that on the whole the end of arc-extinguish chamber grows one section than the end of mozzle lid, in case the mozzle lid is upwards broken through by high pressure draught, the air-flow of ejection will have influence on and damage arc-extinguish chamber; After increasing mozzle, make the distance between the end of end and mozzle lid of arc-extinguish chamber very approaching, can not influence and damage arc-extinguish chamber even guaranteed that the mozzle lid is broken through also; Strengthened the arc extinguishing ability, when fuse carries out the pulling load operation,, can produce electric arc, fragile moving contact at contact region in the moment of drawing back fuse; After increasing arc-extinguish chamber, electric arc can be directed in the arc-extinguish chamber, and in the elongate slit of arc-extinguish chamber, is elongated, and produces gas simultaneously, when current over-zero, with arc extinction.Its arc-extinguish chamber is selected high burning-point arc control device design for use, and has antiultraviolet, anti-flammability; High strength is prone to performance characteristics such as gas production, and spout adopts the abnormity design; Guarantee the reliable arc extinguishing of the drop-down load operation of specified big electric current, protected moving contact not to be damaged, prolonged the useful life of fuse; Post insulator adopts synthetic insulator; Because cement casting is used in the mounting panel of porcelain insulator and installation foot position; Be subjected to the influence of climatic environments such as temperature bigger; Be prone to loosening; Easy corrosion of link and fracture; Influence is normal to be used, and its Heavy Weight, volume big, be prone to crackedly, make it be difficult for transportation and install.Synthetic insulator has good pollution performance, has significantly reduced cleaning and maintenance to insulator, and has improved pollution flashover voltage; And its size is little, in light weight; Shockproof and anti-brittle failure performance is good, more helps transportation and installs, and also has anti-corrosion damage, does not play performance characteristics such as trace.In adopting, synthetic insulator buries bolt technology, the anti-embrittlement when having guaranteed the antirust and blasting operation of link, and its durability and toughness strengthen than traditional porcelain pillar greatly, and fail safe significantly improves.The synthetic insulator material adopts special proportioning, makes the performances such as anti-aging, anti-electrocorrosion, antiultraviolet of synthetic insulator overcoat improve its more Green Product and recyclable utilization simultaneously greatly; Increased the two ends connection bolt.Every end is if having only a connection bolt, in case come in contact bad even during the phenomenon of breaking off, will influence the operation of whole piece circuit, is prone to produce serious consequence; Therefore, every end increases a connection bolt, has strengthened switching performance greatly, makes the fuse operation more stable, has guaranteed the normal operation of circuit.
The foregoing description only is explanation technical conceive of the present invention and characteristics; Its purpose is to allow the personage that is familiar with this technology can understand content of the present invention and implements; Can not limit protection scope of the present invention with this; All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (3)
1. a high voltage drop-out type fuse cutout comprises fusion tube, fuse, fixed contact, stationary contact bracket, post insulator, moving contact, moving contact rack, arc-extinguish chamber; Said fixed contact is arranged on the fusion tube, and said stationary contact bracket is arranged on post insulator one end; Said moving contact is arranged on the post insulator other end; Said moving contact rack is arranged on the fusion tube; Also be provided with arc-extinguish chamber on the said moving contact; On moving contact rack, said stationary contact bracket, moving contact are provided with connection bolt to said fuse the moving contact tension; It is characterized in that: the moving contact rack end of said fusion tube also is provided with a mozzle, and the end of mozzle is provided with lid.
2. high voltage drop-out type fuse cutout according to claim 1 is characterized in that: said post insulator adopts synthetic insulator.
3. high voltage drop-out type fuse cutout according to claim 1 is characterized in that: said stationary contact bracket, moving contact are provided with connection bolt and are 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102459061A CN102347179A (en) | 2010-08-05 | 2010-08-05 | High-voltage-dropout-type fuse cutout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102459061A CN102347179A (en) | 2010-08-05 | 2010-08-05 | High-voltage-dropout-type fuse cutout |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102347179A true CN102347179A (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102459061A Pending CN102347179A (en) | 2010-08-05 | 2010-08-05 | High-voltage-dropout-type fuse cutout |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102347179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103681157A (en) * | 2013-12-22 | 2014-03-26 | 广西和谐电力科技有限公司 | Arc-extinguishing-type drop-out fuse |
| CN105957784A (en) * | 2016-07-20 | 2016-09-21 | 王忠阳 | Fusing mechanism and split type drop fuse |
| CN114038722A (en) * | 2021-11-09 | 2022-02-11 | 广东电网有限责任公司 | Drop-out fuse |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3594676A (en) * | 1969-08-14 | 1971-07-20 | Joslyn Mfg & Supply Co | Electrical cutout |
| CN2496128Y (en) * | 2001-08-13 | 2002-06-19 | 宁波日升电器制造有限公司 | Outdoor AC high-voltage drop-off type fuse |
| US6583708B1 (en) * | 2000-07-14 | 2003-06-24 | Hubbell Incorporated | Fuse cutout with integrated link break lever and fuse link ejector |
| CN2561086Y (en) * | 2002-07-17 | 2003-07-16 | 宁波日升电器制造有限公司 | Outdoor high-tension injection drop-off fuse |
| CN201383475Y (en) * | 2009-04-24 | 2010-01-13 | 江苏省电力公司泗洪县供电公司 | Dropout type fuse protector |
-
2010
- 2010-08-05 CN CN2010102459061A patent/CN102347179A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3594676A (en) * | 1969-08-14 | 1971-07-20 | Joslyn Mfg & Supply Co | Electrical cutout |
| US6583708B1 (en) * | 2000-07-14 | 2003-06-24 | Hubbell Incorporated | Fuse cutout with integrated link break lever and fuse link ejector |
| CN2496128Y (en) * | 2001-08-13 | 2002-06-19 | 宁波日升电器制造有限公司 | Outdoor AC high-voltage drop-off type fuse |
| CN2561086Y (en) * | 2002-07-17 | 2003-07-16 | 宁波日升电器制造有限公司 | Outdoor high-tension injection drop-off fuse |
| CN201383475Y (en) * | 2009-04-24 | 2010-01-13 | 江苏省电力公司泗洪县供电公司 | Dropout type fuse protector |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103681157A (en) * | 2013-12-22 | 2014-03-26 | 广西和谐电力科技有限公司 | Arc-extinguishing-type drop-out fuse |
| CN103681157B (en) * | 2013-12-22 | 2016-02-03 | 广西和谐电力科技有限公司 | A kind of Arc-extinguishing-tydrop-out drop-out fuse |
| CN105957784A (en) * | 2016-07-20 | 2016-09-21 | 王忠阳 | Fusing mechanism and split type drop fuse |
| CN114038722A (en) * | 2021-11-09 | 2022-02-11 | 广东电网有限责任公司 | Drop-out fuse |
| CN114038722B (en) * | 2021-11-09 | 2023-06-27 | 广东电网有限责任公司 | Drop-out fuse |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120208 |