CN216054562U - Zero-crossing delay arc extinguishing structure device of drop-out fuse - Google Patents
Zero-crossing delay arc extinguishing structure device of drop-out fuse Download PDFInfo
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- CN216054562U CN216054562U CN202122526553.9U CN202122526553U CN216054562U CN 216054562 U CN216054562 U CN 216054562U CN 202122526553 U CN202122526553 U CN 202122526553U CN 216054562 U CN216054562 U CN 216054562U
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- fuse
- drop
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- 230000003068 static effect Effects 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 14
- 239000012212 insulator Substances 0.000 claims abstract description 7
- 230000004927 fusion Effects 0.000 claims description 12
- 229910000906 Bronze Inorganic materials 0.000 claims description 8
- 239000010974 bronze Substances 0.000 claims description 8
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000010891 electric arc Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000001012 protector Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model provides a zero-crossing delay arc-extinguishing structure device of a drop-out fuse, which relates to the field of fuses, comprises a fuse and a zero-crossing delay auxiliary arc contact, and is characterized in that: the novel arc extinguishing device is characterized in that an insulator wraps the fuse, one side of the top of the fuse is electrically connected with an upper terminal, the top of the upper terminal is movably connected with a wire inlet end, the upper terminal comprises a wire inlet end, one side of the upper terminal is electrically connected with an upper static contact, a movable contact can be switched on and off before an auxiliary arc contact, an arc can be generated on the auxiliary arc contact, the zero crossing of arc current is the most favorable moment for switching on and off the arc, the zero crossing time of the current can be prolonged by half cycle wave due to the existence of a solid diode, the arc can be extinguished, the technical problem that the arc extinguishing function is lost due to the structure and materials in the prior art is solved by the zero crossing time-delay auxiliary arc contact, and meanwhile, the power generation capacity and the power supply reliability are guaranteed.
Description
Technical Field
The utility model relates to the field of fuses, in particular to a zero-crossing delay arc extinguishing structure device of a drop-out fuse.
Background
The drop-out fuse is widely applied to distribution networks in China, but most of the existing drop-out fuses have no arc extinguishing function, and the fuse is absolutely not allowed to be opened or closed when a load exists in a line. The arc extinguishing cover is arranged on a few drop-out fuses, the drop-out fuses have a load shedding function, the service life of the drop-out fuses is at most two years due to the structure and the materials, otherwise, when the fuses act and the arc extinguishing cover performs arc extinguishing, the arc extinguishing cover is crushed due to aging, the arc extinguishing function is lost, and great potential safety hazards are brought to high-voltage distribution lines.
Secondly, the drop-out fuse adopted in the prior art is a single-conduction loop, the fuse body needs to be powered off and replaced after being fused, the fuse body cannot be closed with a load, the generated energy and the power supply reliability are influenced, and the requirements of the current society on the fuse body cannot be gradually met.
Therefore, a drop-out fuse zero-crossing time-delay arc extinguishing structure device with excellent performance is urgently needed to meet the social requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides a zero-crossing delay arc extinguishing structure device of a drop-out fuse.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a drop out fuse zero passage time delay arc extinguishing structure device, includes fuse and the supplementary arc contact of zero passage time delay, the outside parcel of fuse has the insulator, one side electric connection at fuse top has the upper terminal, the top swing joint of upper terminal has the inlet wire end, the upper terminal contains the inlet wire end, one side electric connection of upper terminal has last static contact.
Preferably, the bottom of the upper electrostatic contact is movably connected with a rain cover, one side of the rain cover is electrically connected with a solid diode, one side of the solid diode is electrically connected with an auxiliary arc contact, and the zero-crossing delay auxiliary arc contact is composed of the solid diode and the auxiliary arc contact.
Preferably, the bottom of the upper electrostatic contact is electrically connected with a contact spring, the bottom of the contact spring is electrically connected with a bronze gong cap, the bottom of the bronze gong cap is movably connected with a fusion pipe fitting, the bronze gong cap and the fusion pipe fitting are integrated, and the top and the bottom of the fusion pipe fitting are both sleeved with fastening rings.
Preferably, the bottom of the upper electrostatic contact is movably connected with one end of a moving contact, and the other end of the moving contact penetrates through the bronze gong cap.
Preferably, the auxiliary arc contact clamps a fastening ring at the top of the melting pipe fitting, and one side of the fastening ring at the top of the melting pipe fitting is electrically connected with an operating ring.
Preferably, one side of the bottom fastening ring of the fuse tube part is electrically connected with a lower electrostatic contact, one side of the lower electrostatic contact is electrically connected with a lower terminal, the bottom of the lower terminal is electrically connected with one end of a bottom moving contact, and the other end of the bottom moving contact is electrically connected with a wire outlet end.
Advantageous effects
According to the utility model, the fuse protector is combined with the fuse protector through the upper static contact, the auxiliary arc contact, the lower static contact and other structures, the auxiliary arc contact is connected with the solid diode, when the fuse protector is switched on, the auxiliary arc contact is switched on before the upper static contact and the moving contact are switched on, and then the moving contact is switched on to short-circuit the auxiliary arc contact; when the fuse is switched on and switched off, the movable contact is switched off before the auxiliary arc contact, an electric arc can be generated on the auxiliary arc contact, the zero crossing of the electric arc current is the most favorable moment for switching on and switching off the electric arc, the zero crossing time of the current can be prolonged by half cycle wave due to the existence of the solid diode, the electric arc can be extinguished, the drop-out fuse in the prior art is switched on and switched off with load, the load voltage drops between the upper static contact and the lower static contact during switching on and switching off, the contact is burnt and melted, the technical problem that the arc extinguishing function is lost due to the structure and materials in the prior art is solved by the zero crossing time delay auxiliary arc contact, and meanwhile, the power generation capacity and the reliability of power supply are ensured.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a zero-crossing time-delay arc extinguishing structure device of a drop-out fuse;
FIG. 2 is a schematic diagram of an upper electrostatic contact structure of a zero-crossing time-delay arc extinguishing structure device of a drop-out fuse;
fig. 3 is a schematic diagram of a zero-crossing time-delay auxiliary arc contact structure of a drop-out fuse zero-crossing time-delay arc extinguishing structure device;
FIG. 4 is a normal conduction routing diagram of a zero-crossing delay arc-extinguishing structural device of the drop-out fuse;
FIG. 5 is a cut-off travel diagram of a zero-crossing delay arc-extinguishing structural device of the drop-out fuse;
fig. 6 is a schematic diagram of the overall switching structure of the zero-crossing delay arc extinguishing structure device of the drop-out fuse.
Illustration of the drawings:
1. an upper terminal; 2. an upper electrostatic contact; 3. a zero-crossing time-delay auxiliary arcing contact; 4. a lower terminal; 5. a lower electrostatic contact; 6. melting the pipe fitting; 7. a solid-state diode; 8. an auxiliary arcing contact; 9. an insulator; 10. a moving contact; 11. a fuse; 12. a rain cover; 13. a contact spring; 14. a bronze gong cap; 15. an operating ring; 16. a fastening ring; 17. a wire outlet end; 18. a wire inlet end; 19. and a bottom moving contact.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
The specific embodiment is as follows:
referring to fig. 1-6, a zero-crossing time-delay arc extinguishing structure device of a drop-out fuse comprises a fuse 11 and a zero-crossing time-delay auxiliary arc contact 3, an insulator 9 is wrapped outside the fuse 11, one side of the top of the fuse 11 is electrically connected with an upper terminal 1, the top of the upper terminal 1 is movably connected with a wire inlet end 18, the upper terminal 1 comprises the wire inlet end 18, one side of the upper terminal 1 is electrically connected with an upper electrostatic contact 2, the bottom of the upper electrostatic contact 2 is movably connected with a rain-proof cover 12, one side of the rain-proof cover 12 is electrically connected with a solid diode 7, one side of the solid diode 7 is electrically connected with an auxiliary arc contact 8, the zero-crossing time-delay auxiliary arc contact 3 consists of the solid diode 7 and the auxiliary arc contact 8, the bottom of the upper electrostatic contact 2 is electrically connected with a contact spring 13, the bottom of the contact spring 13 is electrically connected with a copper nut 14, and the bottom of the copper nut 14 is movably connected with a fusion pipe 6, the bronze gong cap 14 and the fusion tube element 6 are integrated, the top and the bottom of the fusion tube element 6 are sleeved with fastening rings 16, the bottom of the upper static contact 2 is movably connected with one end of a movable contact 10, the other end of the movable contact 10 penetrates through the bronze gong cap 14, an auxiliary arc contact 8 clamps the fastening ring 16 at the top of the fusion tube element 6, one side of the fastening ring 16 at the top of the fusion tube element 6 is electrically connected with an operating ring 15, one side of the fastening ring 16 at the bottom of the fusion tube element 6 is electrically connected with a lower static contact 5, one side of the lower static contact 5 is electrically connected with a lower terminal 4, the bottom of the lower terminal 4 is electrically connected with one end of a bottom movable contact 19, the other end of the bottom movable contact 19 is electrically connected with a wire outlet end 17, a solid diode 7 and the auxiliary arc contact 8 are fixedly connected in series, a zero-crossing time delay auxiliary arc contact 3 is arranged below a fracture formed by the upper static contact 2 and the movable contact 10, and the zero-crossing time delay auxiliary arc contact 3 is connected with the fracture in parallel, the fuse tube 6 is arranged between the zero-crossing time-delay auxiliary arc contact 3 and the lower static contact 5, and the insulator 9 is an insulating porcelain insulator.
The working principle of the utility model is as follows: when the arc extinguishing device is normally conducted, the upper static contact 2 and the movable contact 10 are conducted with the fuse tube part 6, when the load is on and off, the movable contact 10 is firstly switched off, then the zero-crossing time-delay auxiliary arc contact 3 and the fuse tube part 6 are switched off, and the load voltage drops on the zero-crossing time-delay auxiliary arc contact 3 at the moment; when the load is closed, the zero-cross delay auxiliary arc contact 3 and the fuse tube part 6 are closed firstly, because the zero-cross delay auxiliary arc contact 3 is formed by connecting a solid diode 7 and an auxiliary arc contact 8 in series, the power voltage drops on the auxiliary arc contact 8, namely, an electric arc exists on the auxiliary arc contact 8, when the current crosses zero, and simultaneously, under the reverse cut-off state of the diode, the zero-cross of the electric arc current continues for half cycle, the electric arc has no energy injection and is rapidly extinguished, and then, the movable contact 10 is closed, so that the upper electrostatic contact 2 and the movable contact 10 are prevented from being ablated and melted due to overlarge current existing between the upper electrostatic contact 2 and the movable contact 10.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a drop out fuse zero passage time delay arc extinguishing structure device, includes fuse (11) and zero passage time delay auxiliary arc contact (3), its characterized in that: the outside parcel of fuse (11) has insulator (9), one side electric connection at fuse (11) top has last terminal (1), the top swing joint of going up terminal (1) has inlet wire end (18), it includes inlet wire end (18) to go up terminal (1), one side electric connection of going up terminal (1) has last electrostatic contact (2).
2. The zero-crossing time-delay arc extinguishing structure device of the drop-out fuse as claimed in claim 1, wherein: go up electrostatic contact (2) bottom swing joint and have rain-proof lid (12), one side electric connection of rain-proof lid (12) has solid diode (7), one side electric connection of solid diode (7) has auxiliary arc contact (8), zero cross time delay auxiliary arc contact (3) comprise solid diode (7) and auxiliary arc contact (8).
3. The zero-crossing time-delay arc extinguishing structure device of the drop-out fuse as claimed in claim 1, wherein: go up the bottom electric connection of electrostatic contact (2) and have contact spring (13), the bottom electric connection of contact spring (13) has gong cap (14), the bottom swing joint of gong cap (14) has melting pipe spare (6), gong cap (14) and melting pipe spare (6) are as an organic whole, fastening ring (16) have all been cup jointed to the top and the bottom of melting pipe spare (6).
4. The zero-crossing time-delay arc extinguishing structure device of the drop-out fuse as claimed in claim 1, wherein: the bottom of the upper static contact (2) is movably connected with one end of a moving contact (10), and the other end of the moving contact (10) penetrates through a bronze gong cap (14).
5. The zero-crossing time-delay arc extinguishing structure device of the drop-out fuse as claimed in claim 2, wherein: the auxiliary arc contact (8) clamps a fastening ring (16) at the top of the fusion pipe fitting (6), and one side of the fastening ring (16) at the top of the fusion pipe fitting (6) is electrically connected with an operation ring (15).
6. The zero-crossing time-delay arc extinguishing structure device of the drop-out fuse as claimed in claim 5, wherein: one side of a bottom fastening ring (16) of the fusion pipe fitting (6) is electrically connected with a lower static contact (5), one side of the lower static contact (5) is electrically connected with a lower terminal (4), the bottom of the lower terminal (4) is electrically connected with one end of a bottom moving contact (19), and the other end of the bottom moving contact (19) is electrically connected with a wire outlet end (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122526553.9U CN216054562U (en) | 2021-10-20 | 2021-10-20 | Zero-crossing delay arc extinguishing structure device of drop-out fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122526553.9U CN216054562U (en) | 2021-10-20 | 2021-10-20 | Zero-crossing delay arc extinguishing structure device of drop-out fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216054562U true CN216054562U (en) | 2022-03-15 |
Family
ID=80609998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122526553.9U Active CN216054562U (en) | 2021-10-20 | 2021-10-20 | Zero-crossing delay arc extinguishing structure device of drop-out fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216054562U (en) |
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2021
- 2021-10-20 CN CN202122526553.9U patent/CN216054562U/en active Active
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