CN217719465U - Non-polarity arc-blowing structure of direct current contactor - Google Patents
Non-polarity arc-blowing structure of direct current contactor Download PDFInfo
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- CN217719465U CN217719465U CN202221888832.8U CN202221888832U CN217719465U CN 217719465 U CN217719465 U CN 217719465U CN 202221888832 U CN202221888832 U CN 202221888832U CN 217719465 U CN217719465 U CN 217719465U
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Abstract
The utility model discloses a DC contactor's nonpolarity arc blowing structure, including coil assembly, the coil assembly both sides all are equipped with the magnetic conduction board admittedly, have installed female the arranging of static contact, run-on plate and moving contact between two magnetic conduction boards, and female the arranging of static contact concatenates through coil assembly and run-on plate. After the outage, produce electric arc between arc contact and the movable contact, electric arc can produce magnetic field at the coil assembly, can produce perpendicular paper magnetic field inwards between striking plate and moving contact, electric arc receives ampere power direction to make progress for perpendicular to electric arc direction, the ampere power that produces this moment blows in the arc extinguishing cover with electric arc and carries out the arc extinguishing, when the electric current is reverse, the magnetic field direction of production is also reverse along with it, because electric arc is the same reverse between the contact this moment, the ampere power direction that electric arc received still perpendicular to electric arc direction makes progress, the arc blowing direction is unchangeable, thereby realize nonpolarity arc blowing, electric arc is stronger, the ampere power of production is just bigger, the arc blowing effect is just stronger, the utility model discloses simple structure, the contactor structure has been simplified greatly.
Description
Technical Field
The utility model relates to a direct current contactor technical field especially relates to a direct current contactor's nonpolarity arc-blowing structure.
Background
For electrical appliances with contacts, electric arcs can be generated in the breaking process of the contacts, the contacts and insulation are burnt by the high temperature of the electric arcs, and even interphase short circuit and electrical appliance explosion are caused under severe conditions, so that fire disasters are caused, and the safety of personnel and equipment is endangered. The direct current contactor is a switching device which is widely applied in the field of rail transit, and has the function of frequently switching on and off a main circuit or an auxiliary circuit.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a DC contactor's nonpolarity arc-blowing structure.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a non-polar arc blowing structure of a direct current contactor comprises a coil group, magnetic conduction plates are fixedly arranged on two sides of the coil group, a static contact busbar, an arc striking plate and a moving contact are arranged between the two magnetic conduction plates, and the static contact busbar is connected with the arc striking plate in series through the coil group.
As a further improvement of the above scheme:
the coil group comprises an iron core and a coil, and the coil is wound on the iron core.
One end of the coil is connected with the static contact busbar, and the other end of the coil is connected with the run-on plate.
One end of the coil is connected with the static contact busbar through a screw, and the other end of the coil is connected with the arc striking plate through a limiting screw.
And a main contact is arranged on the static contact busbar.
And the arc striking plate is provided with an arc contact.
And the moving contact is provided with a moving contact matched with the main contact and the arc contact.
Compared with the prior art, the utility model has the advantages of:
a non-polar arc blowing structure of a direct current contactor comprises a coil group, magnetic conduction plates are fixedly arranged at two ends of the coil group, a static contact busbar and an arc striking plate are arranged between the two magnetic conduction plates, the static contact busbar is connected with the arc striking plate in series through the coil group, and a moving contact is further arranged between the two magnetic conduction plates. After the outage, the contactor contact is disconnected, an electric arc is generated between the arc contact and the movable contact, the electric arc can generate a magnetic field at the coil assembly, magnetic conductive plates are fixedly mounted at two ends of the coil assembly to form a magnetic circuit, a magnetic field perpendicular to the paper surface inwards can be generated between the arc striking plate and the movable contact according to the right-hand spiral rule, the electric arc is upward perpendicular to the electric arc direction under the action of ampere force, the electric arc is blown into an arc extinguishing cover to be extinguished by the ampere force generated at the moment, when the current is reversed, the direction of the generated magnetic field is reversed along with the direction of the generated magnetic field, the direction of the generated magnetic field is changed into the direction perpendicular to the paper surface outwards, because the electric arc is reversed between the contacts at the moment, the direction of the ampere force applied to the electric arc is still upward perpendicular to the electric arc direction according to the left-hand ampere rule, the electric arc blowing direction is unchanged, and accordingly nonpolar electric arc blowing is realized, the stronger the electric arc is generated, the stronger is the arc blowing effect is stronger, and the opposite is weaker, the utility model has a simple structure and greatly simplifies the contactor structure.
Drawings
Fig. 1 is a front view of a non-polar arcing structure of a dc contactor according to the present invention;
fig. 2 is a top view of a non-polar arcing structure of a dc contactor according to the present invention;
fig. 3 is a schematic diagram of the internal structure of the non-polar arc-blowing structure of the dc contactor of the present invention.
The reference numerals in the figures denote:
1. a coil assembly; 11. an iron core; 12. a coil; 121. a screw; 122. a limit screw; 2. a magnetic conductive plate; 3. a static contact busbar; 31. a main contact; 4. an arc striking plate; 41. an arc contact; 5. a moving contact; 51. and (4) moving a contact.
Detailed Description
The invention will be described in further detail with reference to the drawings and specific embodiments.
Fig. 1 to fig. 3 show the utility model relates to an embodiment of dc contactor's nonpolarity arc blowing structure, including coil assembly 1, coil assembly 1 both ends are all equipped with magnetic conduction plate 2 admittedly, have installed female 3 and the run-on plate 4 of static contact between two magnetic conduction plates 2, and female 3 of static contact concatenates through coil assembly 1 and run-on plate 4, has still installed moving contact 5 between two magnetic conduction plates 2. After the power failure, the contactor contact is disconnected, an electric arc is generated between the arc contact 41 and the movable contact 51, the electric arc can generate a magnetic field in the coil assembly 1, the two ends of the coil assembly 1 are fixedly provided with the magnetic conduction plates 2 to form a magnetic circuit, the magnetic field inwards perpendicular to the paper surface can be generated between the arc striking plate 4 and the movable contact 5 according to the right-hand spiral rule, and then according to the left-hand ampere rule, the electric arc is upwards stressed in the ampere force direction perpendicular to the electric arc direction, the electric arc is blown into the arc extinguishing cover for arc extinguishing by the generated ampere force at the moment, when the current is reversed, the generated magnetic field direction is reversed along with the direction, the generated magnetic field direction is outwards perpendicular to the paper surface, because the electric arc is reversed between the contacts at the moment, according to the left-hand ampere rule, the ampere force direction stressed by the electric arc is still upwards perpendicular to the electric arc direction, the arc blowing direction is unchanged, and accordingly, the nonpolar arc blowing is realized, the stronger the electric arc, the larger the electric arc force is, the stronger the arc blowing effect is, and the weaker is the opposite direction is, the utility model is simple in structure, and the contactor structure is greatly simplified.
In this embodiment, the coil assembly 1 includes a core 11 and a coil 12, and the coil 12 is wound around the core 11. In the structure, after the electric arc is led into the coil 12, a magnetic field is generated between the two magnetic conduction plates 2, upward magnetic blowing force is generated on the electric arc, so that the electric arc enters the arc extinguishing cover, and the arc extinguishing purpose is achieved, wherein the number of turns of the coil 12 can be adjusted according to the situation, and the coil can generate proper magnetic blowing force.
In this embodiment, one end of the coil 12 is connected to the static contact busbar 3, and the other end is connected to the arc striking plate 4. In the structure, a static contact busbar 3 and an arc striking plate 4 are connected in series through a coil 12 to realize non-polar arc blowing.
In this embodiment, one end of the coil 12 is connected to the static contact busbar 3 through a screw 121, and the other end is connected to the arc striking plate 4 through a limit screw 122. In the structure, the coil 12 is fixedly connected by the screw 121 and the limit screw 122, so that the coil 12 can be detached, and the maintenance is convenient.
In this embodiment, the main contact 31 is installed on the static contact busbar 3. In this configuration, the main contact 31 and the movable contact 51 are closed to establish electrical continuity.
In this embodiment, the arc striking plate 4 is provided with an arc contact 41. In this configuration, the arcing contact 41 is provided so that, when power is interrupted, an arc is generated between the arcing contact 41 and the movable contact 51 corresponding thereto, thereby protecting the main contact 31 from the arc.
In this embodiment, the movable contact 5 is provided with two movable contacts 51 matching with the main contact 31 and the arcing contact 41. When the contactor is energized, the movable contact 51 closes with the main contact 31, making the circuit continuous.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention should fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a direct current contactor's nonpolarity arc-blowing structure which characterized in that: the magnetic conductive plate type three-phase alternating current motor is characterized by comprising a coil group (1), magnetic conductive plates (2) are fixedly arranged on two sides of the coil group (1), a static contact busbar (3), an arc striking plate (4) and a moving contact (5) are arranged between the two magnetic conductive plates (2), and the static contact busbar (3) is connected with the arc striking plate (4) in series through the coil group (1).
2. The nonpolar arc blowing structure of the direct current contactor as claimed in claim 1, wherein: the coil assembly (1) comprises an iron core (11) and a coil (12), wherein the coil (12) is wound on the iron core (11).
3. The non-polar arcing structure of the direct current contactor according to claim 2, wherein: one end of the coil (12) is connected with the static contact busbar (3), and the other end is connected with the arc striking plate (4).
4. The non-polar arcing structure of the direct current contactor according to claim 3, wherein: one end of the coil (12) is connected with the static contact busbar (3) through a screw (121), and the other end of the coil is connected with the arc striking plate (4) through a limit screw (122).
5. The nonpolar arc blowing structure of the direct current contactor as claimed in claim 4, wherein: and a main contact (31) is arranged on the static contact busbar (3).
6. The nonpolar arc blowing structure of the direct current contactor as claimed in claim 5, wherein: and an arc contact (41) is arranged on the arc striking plate (4).
7. The nonpolar arc blowing structure of the direct current contactor as claimed in claim 6, wherein: the moving contact (5) is provided with two moving contacts (51) matched with the main contact (31) and the arc contact (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221888832.8U CN217719465U (en) | 2022-07-20 | 2022-07-20 | Non-polarity arc-blowing structure of direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221888832.8U CN217719465U (en) | 2022-07-20 | 2022-07-20 | Non-polarity arc-blowing structure of direct current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217719465U true CN217719465U (en) | 2022-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221888832.8U Active CN217719465U (en) | 2022-07-20 | 2022-07-20 | Non-polarity arc-blowing structure of direct current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217719465U (en) |
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2022
- 2022-07-20 CN CN202221888832.8U patent/CN217719465U/en active Active
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