CN219017485U - Rotary type arc striking and extinguishing device for alternating current contactor - Google Patents
Rotary type arc striking and extinguishing device for alternating current contactor Download PDFInfo
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- CN219017485U CN219017485U CN202222861901.2U CN202222861901U CN219017485U CN 219017485 U CN219017485 U CN 219017485U CN 202222861901 U CN202222861901 U CN 202222861901U CN 219017485 U CN219017485 U CN 219017485U
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Abstract
The utility model relates to an arc striking and extinguishing device, in particular to an arc striking and extinguishing device of a rotary alternating current contactor. The arc extinguishing device comprises a moving contact, a fixed contact and an arc extinguishing cover of a rotary alternating current contactor, wherein the moving contact and the fixed contact are positioned beside an arc striking port of the arc extinguishing cover, arc extinguishing pieces are arranged in a cavity of the arc extinguishing cover, a first iron arc angle capable of leading an upper arc of the fixed contact to enter the arc extinguishing cover is arranged beside the fixed contact, a second iron arc angle is arranged on the moving contact, and a third iron arc angle capable of leading an upper arc of the fixed contact to enter the arc extinguishing cover is arranged above the second iron arc angle. According to the utility model, the iron arc angle mechanism for guiding the electric arc to enter the arc extinguishing chamber is additionally arranged on the moving contact and the fixed contact of the rotary alternating current contactor, so that the traditional magnetic blowing coil mechanism is replaced, the arc extinguishing effect is unchanged, and meanwhile, the production cost of the rotary alternating current contactor is reduced.
Description
Technical Field
The utility model relates to an arc striking and extinguishing device, in particular to an arc striking and extinguishing device of a rotary alternating current contactor.
Background
In the disconnection process of the rotary alternating current contactor, arc extinguishing is needed to be carried out on an arc generated by the rotary alternating current contactor by adopting an arc extinguishing cover; the existing arc-extinguishing cover for the rotary alternating-current contactor generally uses a magnetic blowing coil mechanism to lead an electric arc into the arc-extinguishing cover for arc-extinguishing operation; because the coil in the magnetic blowing coil mechanism uses copper with higher price as a material, and the magnetic blowing coil mechanism has a complex structure, the cost of the arc extinguishing chamber for the rotary alternating current contactor is higher, and the cost of the rotary alternating current contactor is high.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a rotary alternating current contactor arc striking and extinguishing device with simple structure and low manufacturing cost.
The specific technical scheme of the utility model is as follows:
the arc striking and extinguishing device of the rotary alternating current contactor comprises a moving contact, a fixed contact and an arc extinguishing cover of the rotary alternating current contactor, wherein the moving contact and the fixed contact are positioned beside an arc striking port of the arc extinguishing cover, arc extinguishing pieces are arranged in a cavity of the arc extinguishing cover, a first iron arc angle capable of leading an electric arc thereon into the arc extinguishing cover is arranged beside the fixed contact, a second iron arc angle is arranged on the moving contact, and a third iron arc angle capable of leading an electric arc thereon into the arc extinguishing cover is arranged above the second iron arc angle;
further, arc-extinguishing plates are vertically arranged in the arc-extinguishing chambers, and the arc-extinguishing chambers (3) are divided into independent chambers along the longitudinal directions of the arc-extinguishing plates by the arc-extinguishing plates;
an insulating plate is vertically arranged beside the arc striking opening, the third iron arc angle is arranged on the insulating plate, and the second iron arc angle and the third iron arc angle are positioned between the insulating plate and the arc striking opening;
one end of the second iron arc angle, which faces the third iron arc angle, is of a pointed structure;
one end of the first iron arc angle, which faces the arc extinguishing chamber, is of a double-bifurcation structure.
The utility model has the following beneficial effects:
according to the utility model, the iron arc angle mechanism for guiding the electric arc to enter the arc extinguishing chamber is additionally arranged on the moving contact and the fixed contact of the rotary alternating current contactor, so that the traditional magnetic blowing coil mechanism is replaced, the arc extinguishing effect is unchanged, and meanwhile, the production cost of the rotary alternating current contactor is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a view in the A-A direction of FIG. 1;
FIG. 3 is a side view of the second iron arc angle of FIG. 1;
fig. 4 is a top view of the first iron arc angle of fig. 1.
Detailed Description
The arc striking and extinguishing device of the rotary alternating current contactor comprises a moving contact 1, a fixed contact 2 and an arc extinguishing cover 3 of the rotary alternating current contactor, wherein the moving contact 1 and the fixed contact 2 are positioned beside an arc striking port 4 of the arc extinguishing cover 3, an arc extinguishing sheet 5 is arranged in a cavity of the arc extinguishing cover 3, a first iron arc angle 6 is arranged beside the fixed contact 2, and the first iron arc angle 6 extends into the arc extinguishing cover 3; arc-extinguishing chamber 3 is vertically provided with arc-isolating plates 9, and arc-extinguishing chamber 3 is longitudinally divided by arc-isolating plates 9 to form independent chambers; an insulating plate 10 is vertically arranged beside the arc striking opening 4, and the second iron arc angle 7 and the third iron arc angle 8 are positioned between the insulating plate 10 and the arc striking opening 4; one end of the second iron arc angle 7, which faces the third iron arc angle 8, is of a pointed structure, and one end of the first iron arc angle 6, which faces the arc extinguishing chamber 3, is of a double-bifurcation structure.
The specific working process of the utility model is as follows:
when the moving contact 1 and the fixed contact 2 are separated to generate an electric arc, the electric arc on the fixed contact 2 is conducted to the first iron arc angle 6, the electric arc on the moving contact 1 is conducted to the third iron arc angle 8 through the second iron arc angle 7, the conducted electric arc is weakened by elongation energy, and finally the electric arc is segmented and cooled in the arc extinguishing chamber 3 through the arc extinguishing piece 5 until the electric arc is extinguished.
The first iron arc angle 6 adopts a double-bifurcation structure, and can divide the separated electric arc into two parts in the process of separating the electric arc on the fixed contact 2, thereby reducing the energy of the electric arc in the process of starting the electric arc and being beneficial to arc extinction; the end part of the second iron arc angle 7 adopts a pointed structure, so that the electric arc on the moving contact 1 can be rapidly led away.
The arc-extinguishing cover 3 is longitudinally divided into two independent chambers by the arc-extinguishing plate 9, so that the electric arcs introduced into the arc-extinguishing cover 3 by the moving contact 1 and the fixed contact 2 can be divided, and the large electric arcs are divided into a plurality of small electric arcs to be extinguished in the two independent chambers, thereby reducing the energy of the electric arcs and being beneficial to arc extinction; the insulating plate 10 functions to prevent arc from overflowing.
Claims (5)
1. The utility model provides a rotary type alternating current contactor striking arc extinguishing device, includes rotary type alternating current contactor's moving contact (1) and static contact (2), explosion chamber (3), moving contact (1) and static contact (2) are located arc striking mouth (4) of explosion chamber (3) and are other, arc extinguishing piece (5) have been arranged in the cavity of explosion chamber (3), its characterized in that: the fixed contact (2) is provided with a first iron arc angle (6) by which an electric arc can enter the arc extinguishing chamber (3), the moving contact (1) is provided with a second iron arc angle (7), and a third iron arc angle (8) by which an electric arc can enter the arc extinguishing chamber (3) is arranged above the second iron arc angle (7).
2. The rotary ac contactor arc striking and extinguishing device according to claim 1, wherein: arc-extinguishing chamber (3) are vertically provided with arc-isolating plates (9), and arc-extinguishing chamber (3) is longitudinally divided into independent chambers by arc-isolating plates (9).
3. A rotary ac contactor arc striking and extinguishing device according to claim 1 or 2, characterized in that: an insulating plate (10) is vertically arranged beside the arc striking opening (4), and the second iron arc angle (7) and the third iron arc angle (8) are positioned between the insulating plate (10) and the arc striking opening (4).
4. A rotary ac contactor arc striking and extinguishing device as recited in claim 3, wherein: one end of the second iron arc angle (7) facing the third iron arc angle (8) is of a pointed structure.
5. The rotary ac contactor arc striking and extinguishing device according to claim 1, wherein: one end of the first iron arc angle (6) facing the arc extinguishing chamber (3) is of a double-bifurcation structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222861901.2U CN219017485U (en) | 2022-10-28 | 2022-10-28 | Rotary type arc striking and extinguishing device for alternating current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222861901.2U CN219017485U (en) | 2022-10-28 | 2022-10-28 | Rotary type arc striking and extinguishing device for alternating current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219017485U true CN219017485U (en) | 2023-05-12 |
Family
ID=86235631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222861901.2U Active CN219017485U (en) | 2022-10-28 | 2022-10-28 | Rotary type arc striking and extinguishing device for alternating current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219017485U (en) |
-
2022
- 2022-10-28 CN CN202222861901.2U patent/CN219017485U/en active Active
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