CN107887222B - Permanent-magnet arc extinguishing live working arc extinguishing switch - Google Patents
Permanent-magnet arc extinguishing live working arc extinguishing switch Download PDFInfo
- Publication number
- CN107887222B CN107887222B CN201711350613.8A CN201711350613A CN107887222B CN 107887222 B CN107887222 B CN 107887222B CN 201711350613 A CN201711350613 A CN 201711350613A CN 107887222 B CN107887222 B CN 107887222B
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- China
- Prior art keywords
- insulating rod
- support ring
- rod
- insulating
- inner electrode
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- 239000012212 insulator Substances 0.000 claims description 6
- 230000001629 suppression Effects 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008033 biological extinction Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H33/182—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
Abstract
The invention discloses an arc-extinguishing switch for permanent magnet arc-extinguishing live working, which is mainly formed by assembling an outer electrode, an inner electrode, a support ring, a connecting wire, an insulating rod, an insulating pull rod, a spring, a permanent magnet and a locking mechanism; the invention has the advantages that the arc generated when the switch is cut off by the permanent magnetic field of the arc extinguishing chamber, thereby the arc extinguishing effect is realized, meanwhile, the double arc extinguishing effect brought by the insulating support ring and the permanent magnet is utilized, the arc extinguishing effect is improved, the operation is simple and convenient, and the invention is widely applied to temporary grounding wire hanging during high-voltage and ultrahigh-voltage live working or a bypass switch for 10kV line live working.
Description
Technical Field
The invention relates to an arc extinction switch, in particular to an arc extinction switch for permanent magnet arc extinction live working.
Background
A certain residual voltage exists in the high-voltage transmission line during power failure maintenance. In order to ensure the safety of maintainers, temporary grounding wires must be hung at the high-voltage line maintenance points. Due to the high induced voltage, the temporary grounding wire generates strong arc and impact current when contacting and separating from the high-voltage wire. When the 10kV distribution line works in a live mode, a bypass switch is required to be added, and electric arcs generated when a live wire is connected or disconnected with a non-live wire are eliminated.
Disclosure of Invention
The purpose of the invention is: the permanent magnet arc extinguishing live working arc extinguishing switch is designed, aiming at the requirements of hanging temporary grounding wire for overhauling a high-voltage transmission line and live working of a 10kV line, effectively eliminates electric arcs generated when a live wire is in contact with or disconnected from a non-live wire, and protects the safety of the wire and operators.
The technical solution of the invention is as follows: the permanent magnet arc extinguishing live working arc extinguishing switch comprises a first insulating rod, a first outer electrode, a first supporting ring, a first connecting wire, a second supporting ring, a first inner electrode, a second insulating rod, a third insulating rod, a second outer electrode, a third supporting ring, a second connecting wire, a fourth supporting ring group, a first permanent magnet, a second inner electrode, a fifth supporting ring and an insulating pull rod; the second insulating rod is connected to the top end of the third insulating rod, the first insulating rod is connected to the top end of the second insulating rod, the first supporting ring is installed at the top end of the first insulating rod, the second supporting ring is installed at the bottom end of the first insulating rod, the third supporting ring is fixed in the third insulating rod, the fourth supporting ring group is located above the third supporting ring and fixed in the third insulating rod, the fourth supporting ring group is composed of a plurality of supporting rings arranged along the longitudinal extension direction of the third insulating rod, a first permanent magnet and a second permanent magnet are symmetrically embedded in each supporting ring, and the fifth supporting ring is installed at the tail end of the third insulating rod; the first outer electrode is fixed in the first insulating rod through a first support ring; the first inner electrode is elastically connected with the second support ring through a first spring, and the first inner electrode is flexibly connected with the first outer electrode through a first connecting wire; the second inner electrode movably penetrates through the fourth support ring group and is elastically connected with the third support ring through a second spring; the insulating pull rod penetrates through the fifth support ring and is arranged in the third insulating rod, and the top end of the insulating pull rod is fixedly connected with the bottom end of the second inner electrode; the second outer electrode is fixed on the side wall of the third insulating rod and is flexibly connected with the second inner electrode through a second connecting wire.
The first outer electrode, the second outer electrode, the first inner electrode, the second inner electrode, the first connecting wire and the second connecting wire are all benign conductors.
The first insulating rod, the second insulating rod, the third insulating rod, the first supporting ring, the second supporting ring, the third supporting ring, the fourth supporting ring group, the fifth supporting ring and the insulating pull rod are insulators.
Wherein, the second insulating rod is a transparent insulator.
The first insulating rod, the second insulating rod and the third insulating rod are hollow tubes.
The locking mechanism is arranged on the side wall of the fifth support ring and comprises a locking button, a third spring, a locking moving rod, a first fixing shaft, a cavity, a second fixing shaft, an angle spring and a third fixing shaft; the locking button is elastically connected with the fifth support ring through a third spring, a cavity is arranged in the insulating pull rod, a first fixing shaft, a second fixing shaft and a third fixing shaft are fixed in the cavity, the locking moving rod is rotationally fixed on the first fixing shaft, the angle spring is fixed on the second fixing shaft, and the angle spring enables the locking moving rod to keep a state of extending out of the cavity through the limitation of the third fixing shaft and to abut against the locking button.
The invention has the following advantages:
1. the arc suppression switch is used for hanging a temporary grounding wire on a high-voltage transmission line, so that ablation of the high-voltage line is effectively avoided; or the bypass switch is used for live working of the 10kV distribution line, so that the safety of an operator is protected.
2. The second insulating rod is transparent, so that the on-off state of the switch fracture can be clearly observed, and the operation is simple and visual.
3. In the third insulating rod, the second inner electrode movably penetrates through the fourth support ring group, and the first permanent magnet and the second permanent magnet are symmetrically embedded on each support ring, so that a magnetic field in the direction vertical to the electric arc is effectively generated, the arc extinguishing distance is lengthened, and the arc extinguishing capability is enhanced.
4. The second inner electrode is elastically connected with the third support ring through the second spring, so that the moving speed of the second inner electrode can be increased in the breaking process, and the arc extinguishing capability is enhanced.
5. And a locking mechanism is arranged in the fifth support ring, and when the first inner electrode is contacted with the second inner electrode, the auxiliary circuit is locked when being switched on.
6. The insulation effect of the fourth support ring group is utilized to increase the insulation effect of the permanent magnetic field, and the triple arc extinction of the fourth support ring group improves the arc extinction effect, is simple and convenient to operate, and is widely applied to temporary grounding wire hanging connection during high-voltage live working or a bypass switch for 10kV line live working.
Drawings
Fig. 1 is a schematic diagram of the closed state of the main view structure switch of the present invention.
Fig. 2 is a schematic diagram of the off state of the front view structure switch of the present invention.
FIG. 3 is a schematic view of a cross-sectional structure B-B in FIG. 1.
Fig. 4 is a partially enlarged schematic view of the latch mechanism of fig. 1.
In the figure: 1 a first insulating rod; 11 a first external electrode; 12 a first support ring; 13 a first connecting line; 14 a second support ring; 15 a first spring; 16 a first inner electrode; 2 a second insulating rod; 3 a third insulating rod; 31 a second external electrode; 32 a third support ring; 33 a second connecting line; 34a fourth set of support rings; 34a first permanent magnet; 34b a second permanent magnet; 35 a second spring; 36 a second inner electrode; 4a fifth support ring; 41 insulating pull rods; 42 a locking button; 43 a third spring; 44 locking the motion bar; 45 a first fixed shaft; 46 a cavity; 47 a second fixed shaft; a 48-degree spring; 49 a third stationary shaft.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the permanent magnet arc extinguishing live working arc extinguishing switch includes a first insulating rod 1, a first outer electrode 11, a first support ring 12, a first connecting wire 13, a second support ring 14, a first inner electrode 16, a second insulating rod 2, a third insulating rod 3, a second outer electrode 31, a third support ring 32, a second connecting wire 33, a fourth support ring group 34, a first permanent magnet 34a, a second permanent magnet 34b, a second inner electrode 36, a fifth support ring 4, and an insulating pull rod 41; the second insulating rod 2 is connected to the top end of the third insulating rod 3, the first insulating rod 1 is connected to the top end of the second insulating rod 2, the first support ring 12 is installed at the top end of the first insulating rod 1, the second support ring 14 is installed at the bottom end of the first insulating rod 1, the third support ring 32 is fixed in the third insulating rod 3, the fourth support ring group 34 is located above the third support ring 32 and fixed in the third insulating rod 3, the fourth support ring group 34 is composed of a plurality of support rings arranged along the longitudinal extension direction of the third insulating rod 3, a first permanent magnet 34a and a second permanent magnet 34b are symmetrically embedded in each support ring, and the fifth support ring 4 is installed at the tail end of the third insulating rod 3; the first outer electrode 11 is fixed in the first insulating rod 1 through a first supporting ring 12; the first inner electrode 16 is elastically connected with the second supporting ring 14 through a first spring 1, and the first inner electrode 16 is flexibly connected with the first outer electrode 11 through a first connecting wire 13; the second inner electrode 36 movably passes through the fourth support ring set 34, and the second inner electrode 36 is elastically connected with the third support ring 32 through a second spring 35; the insulating pull rod 41 passes through the fifth support ring 4 and is arranged in the third insulating rod 3, and the top end of the insulating pull rod 41 is fixedly connected with the bottom end of the second inner electrode 36; the second external electrode 31 is fixed on the side wall of the third insulating rod 3 and flexibly connected with the second internal electrode 36 through a second connecting wire 33.
The first external electrode 11, the second external electrode 31, the first internal electrode 16, the second internal electrode 36, the first connecting line 13 and the second connecting line 33 are all benign conductors.
The first insulating rod 1, the second insulating rod 2, the third insulating rod 3, the first support ring 12, the second support ring 14, the third support ring 32, the fourth support ring group 34, the fifth support ring 4 and the insulating pull rod 41 are insulators.
Wherein, the second insulating rod 2 is a transparent insulator.
The first insulating rod 1, the second insulating rod 2 and the third insulating rod 3 are hollow tubes.
As shown in fig. 3, a locking mechanism is mounted on the side wall of the fifth supporting ring 4, and the locking mechanism comprises a locking button 42, a third spring 43, a locking moving rod 44, a first fixed shaft 45, a cavity 46, a second fixed shaft 47, an angle spring 48 and a third fixed shaft 49; the locking button 42 is elastically connected with the fifth support ring 4 through a third spring 43, a cavity 46 is arranged in the insulating pull rod 41, a first fixed shaft 45, a second fixed shaft 47 and a third fixed shaft 49 are fixed in the cavity 46, the locking moving rod 44 is rotationally fixed on the first fixed shaft 45, an angle spring 48 is fixed on the second fixed shaft 47, and the angle spring 48 is limited through the third fixed shaft 49 to enable the locking moving rod 44 to keep a state of extending out of the cavity 46 and abut against the locking button 42.
The working process of the arc suppression switch of the invention is as follows: FIG. 1 is a schematic diagram of a closed state of a front view configuration switch, and FIG. 2 is a schematic diagram of an open state of the front view configuration switch; when the switch is in an off state and needs to be closed, namely in the state shown in fig. 2, the manual insulating pull rod 41 is pushed up, the manual insulating pull rod 41 drives the second inner electrode 36 to move up and contact with the first inner electrode 16, the manual insulating pull rod 41 is further pushed up and simultaneously compresses the first spring 15 and the second spring 35, the locking motion rod 44 is in contact with the fifth support ring 4, the angle spring 48 is compressed, the locking motion rod 44 enters the cavity 46, when the position of the locking button 42 is reached, the third spring 43 is compressed and clamped in the fifth support ring 4, the contact state of the first inner electrode 16 and the second inner electrode 36 is maintained, and the state shown in fig. 1 is reached; when the switch is in a closed state and needs to be opened, namely the state shown in fig. 1, one hand presses the locking button 42, the other hand pulls the insulating pull rod 41 downwards, the locking button 42 compresses the third spring 43, the locking moving rod 44 enters the cavity 46, the insulating pull rod 41 drives the second inner electrode 36 to move downwards and separate from the first inner electrode 16, and under the triple arc extinguishing effect of the permanent magnets 34a and 34b on the second spring 35, the fourth support ring group 34 and the fourth support ring group 34, the second inner electrode 36 moves downwards, and finally the state shown in fig. 2 is reached.
The particulars described herein are by way of example and for purposes of illustrative discussion of the spirit of the present invention. Various modifications or additions may be made or substituted in a similar manner to those described without departing from the spirit of the invention or exceeding the scope thereof as defined in the accompanying claims.
Claims (1)
1. The arc suppression switch for permanent magnet arc suppression live working comprises a first insulating rod (1), a first outer electrode (11), a first support ring (12), a first connecting wire (13), a second support ring (14), a first inner electrode (16), a second insulating rod (2), a third insulating rod (3), a second outer electrode (31), a third support ring (32) and a second connecting wire (33); the second insulating rod (2) is connected to the top end of the third insulating rod (3), the first insulating rod (1) is connected to the top end of the second insulating rod (2), the first supporting ring (12) is installed at the top end of the first insulating rod (1), the second supporting ring (14) is installed at the bottom end of the first insulating rod (1), and the third supporting ring (32) is fixed in the third insulating rod (3); the first outer electrode (11) is fixed in the first insulating rod (1) through a first support ring (12); the first inner electrode (16) is elastically connected with the second support ring (14) through a first spring (15), and the first inner electrode (16) is flexibly connected with the first outer electrode (11) through a first connecting wire (13); the second inner electrode (36) movably penetrates through the fourth supporting ring group (34), and the second inner electrode (36) is elastically connected with the third supporting ring (32) through a second spring (35); the method is characterized in that: the device also comprises a fourth support ring group (34), a first permanent magnet (34 a), a second permanent magnet (34 b), a second inner electrode (36), a fifth support ring (4) and an insulating pull rod (41); the fourth support ring group (34) is positioned above the third support ring (32) and fixed in the third insulating rod (3), the fourth support ring group (34) is composed of a plurality of support rings arranged along the longitudinal extension direction of the third insulating rod (3), each support ring is symmetrically embedded with a first permanent magnet (34 a) and a second permanent magnet (34 b), and the fifth support ring (4) is installed at the tail end of the third insulating rod (3); the insulating pull rod (41) penetrates through the fifth support ring (4) and is arranged in the third insulating rod (3), and the top end of the insulating pull rod (41) is fixedly connected with the bottom end of the second inner electrode (36); the second external electrode (31) is fixed on the side wall of the third insulating rod (3) and is flexibly connected with the second internal electrode (36) through a second connecting wire (33); the first outer electrode (11), the second outer electrode (31), the first inner electrode (16), the second inner electrode (36), the first connecting line (13) and the second connecting line (33) are all benign conductors; the first insulating rod (1), the second insulating rod (2), the third insulating rod (3), the first supporting ring (12), the second supporting ring (14), the third supporting ring (32), the fourth supporting ring group (34), the fifth supporting ring (4) and the insulating pull rod (41) are insulators; the second insulating rod (2) is a transparent insulator; the first insulating rod (1), the second insulating rod (2) and the third insulating rod (3) are hollow tubes; a locking mechanism is arranged on the side wall of the fifth support ring (4), and the locking mechanism comprises a locking button (42), a third spring (43), a locking moving rod (44), a first fixing shaft (45), a cavity (46), a second fixing shaft (47), an angle spring (48) and a third fixing shaft (49); the locking button (42) is elastically connected with the fifth support ring (4) through a third spring (43), a cavity (46) is arranged in the insulating pull rod (41), a first fixing shaft (45), a second fixing shaft (47) and a third fixing shaft (49) are fixed in the cavity (46), the locking moving rod (44) is rotationally fixed on the first fixing shaft (45), the angle spring (48) is fixed on the second fixing shaft (47), and the angle spring (48) enables the locking moving rod (44) to keep a state of extending out of the cavity (46) and to abut against the locking button (42) through the limitation of the third fixing shaft (49).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711350613.8A CN107887222B (en) | 2017-12-15 | 2017-12-15 | Permanent-magnet arc extinguishing live working arc extinguishing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711350613.8A CN107887222B (en) | 2017-12-15 | 2017-12-15 | Permanent-magnet arc extinguishing live working arc extinguishing switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107887222A CN107887222A (en) | 2018-04-06 |
| CN107887222B true CN107887222B (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711350613.8A Active CN107887222B (en) | 2017-12-15 | 2017-12-15 | Permanent-magnet arc extinguishing live working arc extinguishing switch |
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| Country | Link |
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| CN (1) | CN107887222B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269292A (en) * | 2014-10-27 | 2015-01-07 | 武汉大学 | Insulating barrier type live working arc suppression switch |
| CN204654041U (en) * | 2015-06-02 | 2015-09-23 | 梅花（晋江）伞业有限公司 | A kind of automatic umbrella |
| CN206022242U (en) * | 2016-08-26 | 2017-03-15 | 国家电网公司 | A kind of relay contacts mechanism of arc protection |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2728058Y (en) * | 2004-05-14 | 2005-09-21 | 台州超固电气有限公司 | Hot-line arc extinguishing conduction operating rod |
| CN202696049U (en) * | 2012-05-31 | 2013-01-23 | 富阳市供电局 | Electrodynamic type insulating operating rod |
| CN105140061B (en) * | 2013-04-22 | 2017-07-18 | 国网江苏省电力公司常州供电公司 | single-phase air bypass switch |
| CN104091704B (en) * | 2014-06-30 | 2016-08-17 | 深圳供电局有限公司 | A kind of crowbar switch spring powered self-locking device |
| CN105513884A (en) * | 2014-10-14 | 2016-04-20 | 杨永清 | Manufacturing method of vacuum arc extinguishing chamber especially for direct-current switch electric appliance |
| CN207663982U (en) * | 2017-12-15 | 2018-07-27 | 国网江苏省电力有限公司淮安供电分公司 | Permanent magnetism arc extinguishing livewire work crowbar switch |
-
2017
- 2017-12-15 CN CN201711350613.8A patent/CN107887222B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269292A (en) * | 2014-10-27 | 2015-01-07 | 武汉大学 | Insulating barrier type live working arc suppression switch |
| CN204654041U (en) * | 2015-06-02 | 2015-09-23 | 梅花（晋江）伞业有限公司 | A kind of automatic umbrella |
| CN206022242U (en) * | 2016-08-26 | 2017-03-15 | 国家电网公司 | A kind of relay contacts mechanism of arc protection |
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| Publication number | Publication date |
|---|---|
| CN107887222A (en) | 2018-04-06 |
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