CN220873512U - Mechanism for reinforcing arc striking - Google Patents
Mechanism for reinforcing arc striking Download PDFInfo
- Publication number
- CN220873512U CN220873512U CN202322656805.9U CN202322656805U CN220873512U CN 220873512 U CN220873512 U CN 220873512U CN 202322656805 U CN202322656805 U CN 202322656805U CN 220873512 U CN220873512 U CN 220873512U
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- static
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- moving
- connecting piece
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- 230000003014 reinforcing effect Effects 0.000 title abstract description 7
- 230000003068 static effect Effects 0.000 claims abstract description 74
- 239000004020 conductor Substances 0.000 claims abstract description 40
- 230000002708 enhancing effect Effects 0.000 claims description 12
- 230000000977 initiatory effect Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 description 17
- 238000005452 bending Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model belongs to the technical field of piezoelectric devices, and discloses a mechanism for reinforcing arc striking, which can rapidly eliminate an arc generated between a dynamic side and a static side, namely realize rapid arc extinguishing, and has little additional occupied space, and comprises a static side extension electric conduction member and a dynamic side extension electric conduction member, wherein the static side extension electric conduction member is in electric conduction connection with the static side connection member; the moving-side extending electric conductor is electrically connected with the moving-side connecting piece, and the static-side extending electric conductor and the moving-side extending electric conductor are respectively positioned outside two ends of the arc pulling path.
Description
Technical Field
The utility model belongs to the technical field of piezoelectric devices, and particularly relates to a mechanism for reinforcing arc striking.
Background
As is known, in disconnectors or circuit breakers, in order to eliminate in time the electric arc generated between the moving and stationary sides, they have an arc extinguishing grid set for eliminating the electric arc. The arc enters the arc-extinguishing grid plate group in the generating process, and the grid plates cut the arc into a series of short arcs, so that the voltage drop of the arc is rapidly improved, and the arc extinguishing effect is achieved. The quality of the short-circuit breaking performance of the isolating switch or the circuit breaker is greatly dependent on the climbing speed of the arc to the arc extinguishing gate sheet group and the quality of the arc extinguishing performance of the arc extinguishing gate sheet group.
When the moving contact is opened in the prior art, an arc is generated and climbs upward. In this process, in order to maintain the voltage in the arc-extinguishing chamber, as there is no direct electrical contact between the moving contact and the arc-extinguishing chamber, the moving contact blade and the arc-extinguishing chamber arc striking blade will continuously burn, and the contact burning loss is increased.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a mechanism for reinforcing arc striking, which can rapidly eliminate the arc generated between the dynamic side and the static side and has little additional occupied space.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The utility model provides a strengthen mechanism of striking for isolator or circuit breaker, isolator or circuit breaker have quiet side connecting piece and move side connecting piece, quiet side connecting piece and quiet side circuit electric connection, move side connecting piece and move side circuit electric connection and move and be provided with the moving contact on the side connecting piece, this moving contact is movable to form and draw the electric arc route, its characterized in that includes: a static side extending electric conductor and a dynamic side extending electric conductor, wherein the static side extending electric conductor is connected with the static side connecting piece in an electric conduction way; the moving-side extending electric conductor is electrically connected with the moving-side connecting piece, and the static-side extending electric conductor and the moving-side extending electric conductor are respectively positioned outside two ends of the arc pulling path.
Preferably, the disconnecting switch or the circuit breaker further has an arc extinguishing gate sheet set located in the vicinity of the arc drawing path and for extinguishing an arc, the static-side extension electric conductor has a static-side pole portion, the moving-side extension electric conductor has a moving-side pole portion, and the static-side pole portion and the moving-side pole portion are located outside both ends of the arc extinguishing gate sheet set, respectively.
Further, the static side extension electric guide piece is further provided with a static side installation part, the static side installation part is arranged on the static side connecting piece, and the static side pole part is in electric conduction connection with the static side installation part.
Further, the movable-side extension electric conductor is further provided with a movable-side mounting part, the movable-side mounting part is arranged on the movable-side connecting piece, and the movable-side pole part is in electric conduction connection with the movable-side mounting part.
Preferably, the electrical connection of the static-side extension electrical conductor, the static-side connection and/or the dynamic-side extension electrical conductor, the dynamic-side connection is routed through the inner wall of the disconnector or circuit breaker.
Compared with the prior art, the utility model has the beneficial effects that:
1. Because the mechanism for enhancing the striking of the arc comprises a static side extending electric conductor and a dynamic side extending electric conductor, the static side extending electric conductor is electrically connected with the static side connecting piece; the movable side extension electric conduction member is connected with the movable side connecting member in a conductive manner, the static side extension electric conduction member and the movable side extension electric conduction member are respectively positioned at the outer sides of two ends of an arc pulling path, when the movable side and the static side of the isolating switch or the circuit breaker are disconnected through a movable contact, high-temperature, high-voltage and conductive arcs generated in the process are eliminated, when the movable side and the static side are disconnected with small current, the magnetic field intensity in the isolating switch or the circuit breaker is weaker, the movable side connecting member and the movable side and the static side part form an equipotential state through conductive connection, and an additional electric field loop is formed in a cavity of the isolating switch or the circuit breaker due to the fact that potential difference exists between the movable side connecting member and the static side connecting member, namely, the magnetic field intensity in the isolating switch or the circuit breaker is enhanced, so that the Lorentz force of an arc extinguishing grid set to the arcs is increased.
2. Because the static side extension electric guide piece provided by the utility model is provided with the static side electrode part, the movable side extension electric guide piece is provided with the movable side electrode part, and the static side electrode part and the movable side electrode part are respectively positioned outside two ends of the arc extinguishing grid plate group, the utility model can guide an electric arc to the whole arc extinguishing grid plate group to extinguish the arc.
3. The mechanism of the utility model has higher setting flexibility because the static side extension electric conductor, the static side connecting piece and/or the dynamic side extension electric conductor and the electric connection of the dynamic side connecting piece are routed through the inner wall of the isolating switch or the circuit breaker.
Drawings
FIG. 1 is a schematic diagram of a mechanism for enhancing arc initiation and an arc chute sheet set according to an embodiment of the present utility model;
FIG. 2 is a second schematic diagram of a mechanism for enhancing arc initiation and an arc chute sheet set according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a moving contact according to an embodiment of the present utility model;
fig. 4 is a front view of a mechanism for enhancing arc initiation and an arc chute assembly according to an embodiment of the present utility model.
In the figure: 100. the arc striking reinforcing mechanism comprises a mechanism A, a static side connecting piece, a moving side connecting piece, a B1, a moving contact connecting part, a B2, a moving contact, a C, an arc extinguishing grid sheet group, a P, an arc drawing path, 10, a static side extending electric conductor, 11, a static side mounting part, 12, a static side transition part, 13, a static side pole part, 10a, an on-wall wire, 20, a moving side extending electric conductor, 21, a moving side mounting part, 22, a moving side transition part, 23, a moving side arc extending part, 24 and a moving side pole part.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect achieved by the present utility model easy to understand, the following examples specifically describe the mechanism for enhancing the arc striking of the present utility model with reference to the accompanying drawings, and it should be noted that the description of these embodiments is for aiding understanding of the present utility model, but not limiting the present utility model.
As shown in fig. 1 to 4 (for convenience of highlighting the present solution, the moving contact B2 is omitted in fig. 1, 2, and 4), the mechanism 100 for reinforcing arc striking in the present embodiment is used for the inside of a disconnector or circuit breaker (not shown in the drawings), the disconnector or circuit breaker has a static side connecting piece a, a moving side connecting piece B, and an arc extinguishing grid set C, the static side connecting piece a is electrically connected with a static side circuit (not shown in the drawings), the moving side connecting piece B is electrically connected with a moving side circuit (not shown in the drawings), and the moving side connecting piece B has a moving contact connecting portion B1 and a moving contact B2 movably connected on the moving contact connecting portion B1, the moving contact B2 is movably arranged by hinge, so that when the disconnector or circuit breaker is operated, the moving contact B2 generates an arc in the moving process, and thus the moving contact B2 moves to form a pull path P, and the arc extinguishing grid set S is composed of a plurality of arc extinguishing grid pieces parallel to each other, located in the vicinity of the pull path P, for extinguishing the generated arc.
The mechanism for enhancing arc initiation 100 includes a static side extending electrical conductor 10 and a dynamic side extending electrical conductor 20.
The static side extension electrical conductor 10 is electrically conductively connected to the static side connection a.
The static-side-extending electric conductor 10 has a static-side mounting portion 11, a static-side transition portion 12 and a static-side electrode portion 13 which are sequentially continuous by bending lines, and the static-side mounting portion 11, the static-side transition portion 12 and the static-side electrode portion 13 are all rectangular solids, and the whole static-side-extending electric conductor 10 is a two-dimensional lofting entity whose lofting cross section is rectangular, in this embodiment, the static-side-extending electric conductor 10 is entirely rectangular plate-shaped, and the static-side mounting portion 11, the static-side transition portion 12 and the static-side electrode portion 13 are formed by performing bending operations twice in the extending direction of the static-side-extending electric conductor 10.
Specifically, the static mounting portion 11 is fixed on a corresponding mounting surface (not shown in the drawing) of the static connecting member a, and in this embodiment, the fixing manner is any one of welding, riveting, and screwing.
The static transition portion 12 forms a static forward arc angle (not shown in the drawings) with the static mount portion 11, and in particular, when the energy of the arc is directed from the static mount portion 11 to the static pole portion 13, the static forward arc angle facilitates the conduction of the arc energy on the static extension electrical conductor 10, i.e., reduces the energy retention on the discontinuous conduction surface.
The static pole part 13 is in a rectangular parallelepiped plate shape, is continuous with the static transition part 12 through a broadside, namely is electrically connected with the static mounting part 11 through the broadside, and the range of the aspect ratio of the static pole part 13 is larger than 2:1, specifically, the aspect ratio of the stationary-side pole portion 13 ranges from 7.5:1.
The movable-side extension electric conductor 20 is electrically connected to the movable-side connecting piece B.
The movable-side extension electric guide 20 has a movable-side mounting portion 21, a movable-side transition portion 22, a movable-side arc-extending portion 23, and a movable-side pole portion 24 which are sequentially continuous by bending lines, and the movable-side mounting portion 21, the movable-side transition portion 22, the movable-side arc-extending portion 23, and the movable-side pole portion 24 are all rectangular parallelepiped plates, and the whole movable-side extension electric guide 20 is a two-dimensional lofting entity having a rectangular lofting section, in this embodiment, the movable-side extension electric guide 20 is entirely rectangular parallelepiped plates, and the movable-side mounting portion 21, the movable-side transition portion 22, the movable-side arc-extending portion 23, and the movable-side pole portion 24 are formed by performing bending operations three times in the extending direction of the movable-side extension electric guide 20.
Specifically, the inner wall of the circuit breaker or disconnector is routed by the electrical conductors of the static side extension electrical conductor 10, the static side connection a and/or the moving side extension electrical conductor 20, the moving side connection B, in this embodiment the moving side extension electrical conductor 20 and the moving side connection B are electrically connected by an on-wall wire 10 a.
The bending direction of the moving-side transition portion 22 relative to the moving-side mounting portion 21, the bending direction of the moving-side arc-extending portion 23 relative to the moving-side transition portion 22 are opposite, and the moving-side arc-extending portion 23 and the moving-side mounting portion 21 have a moving-side arc-following included angle (not shown in the drawing), specifically, the moving-side transition portion 22 is bent to the left relative to the moving-side mounting portion 21, the moving-side arc-extending portion 23 is bent to the right relative to the moving-side transition portion 22, and the bending line of the moving-side transition portion 22 and the moving-side arc-extending portion 23 causes the moving-side extending electric conductor 20 to form a sharp angle that pierces toward the outside.
The static side pole part 13 and the movable side pole part 24 are respectively positioned at two outer sides of the arc extinguishing grid sheet group C, and form a reinforced arc striking electric field for the arc extinguishing grid sheet group C, specifically, when the movable side and the static side of the isolating switch or the circuit breaker are broken through the movable contact B2, high-temperature, high-voltage and conductive electric arcs generated in the process are eliminated, when the movable side and the static side are broken by small current, the magnetic field intensity in the isolating switch or the circuit breaker is weaker, the movable side connecting piece and the static side connecting piece form an equipotential state with the movable side and the static side through conductive connection, and because potential difference exists between the movable side connecting piece and the static side connecting piece, an additional electric field loop is formed in the cavity of the isolating switch or the circuit breaker, namely, the magnetic field intensity in the isolating switch or the circuit breaker is enhanced, so that the lorentz force of the arc extinguishing grid sheet group to the electric arcs is increased, and the electric arcs generated between the movable side and the static side are eliminated rapidly, namely, the rapid extinction of the arc is realized, and the mechanism 100 for enhancing the arc striking is additionally arranged in the isolating switch or the circuit breaker.
Specifically, due to the arrangement of the static side transition portion 12, the moving side transition portion 22 and the moving side arc-extending portion 23, the arc generated by the moving contact B2 can be attracted to the wider arc-extinguishing grid sheet group C through the bell mouth effect for quick and effective elimination.
The above embodiments are preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications or variations which may be made by those skilled in the art without the inventive effort within the scope of the appended claims remain within the scope of this patent.
Claims (5)
1. A mechanism for enhancing arcing, for the inside of a disconnector or circuit breaker having a stationary side connector and a movable side connector, the stationary side connector being electrically connected to a stationary side circuit, the movable side connector being electrically connected to a movable side circuit and being provided with a movable contact thereon, the movable contact being movable to form an arcing path, comprising:
a static side extension electric conductor and a dynamic side extension electric conductor,
The static side extension electric conduction piece is in electric conduction connection with the static side connecting piece; the moving-side extending electric conductor is electrically connected with the moving-side connecting piece, and the static-side extending electric conductor and the moving-side extending electric conductor are respectively positioned outside two ends of the arc pulling path.
2. The mechanism for enhancing arc initiation of claim 1 wherein:
Wherein the disconnector or the circuit breaker further has an arc-extinguishing gate sheet group, which is located in the vicinity of the arc-pulling path and which is used for extinguishing an arc,
The static side extension electric conduction member is provided with a static side pole part, the movable side extension electric conduction member is provided with a movable side pole part, and the static side pole part and the movable side pole part are respectively positioned at the outer sides of two ends of the arc extinguishing grid sheet group.
3. The mechanism for enhancing arc initiation of claim 2 wherein:
The static side extending electric guide piece is further provided with a static side installation part which is arranged on the static side connecting piece, and the static side pole part is in electric conduction connection with the static side installation part.
4. The mechanism for enhancing arc initiation of claim 2 wherein:
The movable-side extending electric guide piece is further provided with a movable-side mounting part which is arranged on the movable-side connecting piece, and the movable-side pole part is in electric conduction connection with the movable-side mounting part.
5. The mechanism for enhancing arc initiation of any one of claims 1-4, wherein:
The static side extending electric conducting piece, the static side connecting piece and/or the moving side extending electric conducting piece and the moving side connecting piece are electrically connected through an inner wall wiring of the isolating switch or the circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322656805.9U CN220873512U (en) | 2023-09-28 | 2023-09-28 | Mechanism for reinforcing arc striking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322656805.9U CN220873512U (en) | 2023-09-28 | 2023-09-28 | Mechanism for reinforcing arc striking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220873512U true CN220873512U (en) | 2024-04-30 |
Family
ID=90813965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322656805.9U Active CN220873512U (en) | 2023-09-28 | 2023-09-28 | Mechanism for reinforcing arc striking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220873512U (en) |
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2023
- 2023-09-28 CN CN202322656805.9U patent/CN220873512U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |