CN219046265U

CN219046265U - Electromagnetic mechanism of circuit breaker

Info

Publication number: CN219046265U
Application number: CN202223498216.4U
Authority: CN
Inventors: 夏国庆; 张春才; 方志勇
Original assignee: Jingdezhen Yongxin Vacuum Electric Appliance Co ltd
Current assignee: Jingdezhen Yongxin Vacuum Electric Appliance Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-19
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses an electromagnetic mechanism of a circuit breaker, which comprises a wire inlet plate, a coil, a magnetic yoke, a static contact plate and an iron core component, wherein two ends of the coil are respectively and electrically connected with the wire inlet plate and the static contact plate, the static contact plate is fixed on the magnetic yoke, an insulating sleeve is arranged on the surface of the coil, a refrigeration shell is fixedly sleeved outside the iron core component, the welding surface of the wire inlet plate and the coil is arranged on the thickness surface of the wire inlet plate, the width surface of the wire inlet plate perpendicular to the thickness surface can be regarded as the extension of the coil, the excitation strength of the coil is enhanced, the use of coil materials is reduced, the occupied space of the electromagnetic mechanism is further reduced, the conductive sectional area of the coil can be allowed to be larger, the semiconductor refrigeration plate can be used for rapidly refrigerating fluid, the refrigerating fluid can be rapidly cooled down, and compared with a natural cooling mode, and the heat dissipation performance is good.

Description

Electromagnetic mechanism of circuit breaker

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to an electromagnetic mechanism of a circuit breaker.

Background

The electromagnetic mechanism of the circuit breaker in the prior art comprises a wiring board, a coil, a magnetic yoke, a static contact plate and an iron core component; the coil is characterized in that two ends of the coil are respectively and electrically connected with the wire inlet plate and the static contact plate, the static contact plate is fixed on the magnetic yoke, the static contact plate is provided with a section of U-shaped arc channel formed by bending, a welding surface which is connected with the U-shaped arc channel and is used for welding a static contact is arranged above the U-shaped arc channel, an included angle is formed between an adjacent arc-guiding surface of the U-shaped arc channel, which is close to the welding surface, and the welding surface, the static contact is completely arranged on the welding surface, the coil is wound on the iron core component by a copper plate, the width surface of the copper plate at one end of the coil is welded with the width surface of the wire inlet plate, an insulating layer is coated on the coil, the coil turns are in close contact with each other, a space is reserved between the coil turns and the U-shaped arc channel, an arc generated by the static contact cannot jump to the arc-guiding surface at a higher speed, the arc-resisting capacity of the static contact is limited, and the heat dissipation capacity of the coil is poor.

The utility model of application number 201921790076.3 discloses an electromagnetic mechanism of a circuit breaker, which comprises a wiring board, a coil, a magnetic yoke, a static contact plate and an iron core component; the two ends of the coil are respectively and electrically connected with the wire inlet board and the static contact board, the static contact board is fixed on the magnetic yoke, and the static contact board is provided with a section of U-shaped arc channel formed by bending; the U-shaped arc way top is the welding face that is used for welding the stationary contact that meets with it, form contained angle and contained angle broken line between the adjacent arc face that the U-shaped arc way is close to the welding face and the welding face, the adjacent arc face is concave to set for the constant head tank, the stationary contact is arranged in this constant head tank, and the stationary contact is partly located the welding face, another part is located adjacent arc face, the bottom surface of constant head tank is in the coplanar with the welding face and links to each other with the welding face, can effectively promote stationary contact arc resistance, the heat dispersion of coil, improve the current-carrying capacity, reduce occupation space, but the coil on this circuit breaker electromagnetic mechanism dispels the heat through natural cooling's mode, the radiating effect still exists not enough, use still easily heated damage under the bad weather.

For the problems in the related art, no effective solution has been proposed at present.

Disclosure of Invention

The utility model provides an electromagnetic mechanism of a circuit breaker aiming at the problems in the related art so as to overcome the technical problems in the prior art.

For this purpose, the utility model adopts the following specific technical scheme:

the utility model provides a circuit breaker electromagnetic mechanism, includes into wiring board, coil, yoke, static touch board and iron core subassembly, the both ends of coil are connected with into wiring board and static touch board electricity respectively, the static touch board is fixed on the yoke, the coil surface is equipped with insulating cover, the fixed cover in iron core subassembly outside is equipped with the refrigeration shell, the refrigeration shell inner chamber is equipped with the refrigerating fluid, the refrigeration shell surface is equipped with the semiconductor refrigeration piece.

Preferably, the wire inlet and connecting plate comprises a plate body, and a thickness surface and a width surface are arranged on the plate body.

Preferably, the static contact plate comprises a static contact plate main body, wherein a U-shaped arc channel, a welding surface, a fixing hole and a positioning groove are formed in the static contact plate main body, and a static contact is arranged in an inner cavity of the positioning groove.

Preferably, the wire inlet and connecting plate is welded with the coil, and the welding surface of the wire inlet and connecting plate and the coil is positioned on the thickness surface of the wire inlet and connecting plate.

Preferably, an included angle and an included angle fold line are formed between the adjacent arc-guiding surface of the U-shaped arc channel, which is close to the welding surface, and the welding surface.

Preferably, the stationary contact is arranged in the positioning groove, and one part of the stationary contact is positioned on the welding surface, and the other part of the stationary contact is positioned on the adjacent arc striking surface.

The beneficial effects of the utility model are as follows: 1. by arranging the semiconductor refrigerating plate, the semiconductor refrigerating plate can rapidly refrigerate refrigerating fluid, the refrigerating fluid can rapidly cool the coil, and compared with a natural cooling mode, the semiconductor refrigerating plate has good heat dissipation performance;

2. through locating the welding face of advancing the wiring board and coil into the thickness face of wiring board for advance the wiring board and thickness face vertically width face can regard as the extension of coil, strengthened the excitation intensity of coil, thereby reduce the use of coil material, further reduce electromagnetic mechanism's occupation space, allowable coil's conductive cross-section makes bigger.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a structural view of an electromagnetic mechanism of a circuit breaker according to an embodiment of the present utility model;

fig. 2 is a cross-sectional view of a refrigeration housing of a circuit breaker electromagnetic mechanism in accordance with an embodiment of the utility model;

fig. 3 is a block diagram of an in-circuit board of a circuit breaker electromagnetic mechanism according to an embodiment of the utility model;

fig. 4 is a structural view of a stationary contact plate of an electromagnetic mechanism of a circuit breaker according to an embodiment of the present utility model.

In the figure:

1. a wiring board is fed; 2. a coil; 3. a yoke; 4. a stationary touch plate; 5. an iron core assembly; 6. an insulating sleeve; 7. a refrigeration shell; 8. a refrigerant liquid; 9. a semiconductor refrigeration sheet; 10. a plate body; 11. a thickness surface; 12. a width surface; 13. a stationary contact plate main body; 14. a U-shaped arc path; 15. a welding surface; 16. a fixing hole; 17. a positioning groove; 18. and a stationary contact.

Detailed Description

For the purpose of further illustrating the various embodiments, the present utility model provides the accompanying drawings, which are a part of the disclosure of the present utility model, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present utility model, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.

According to an embodiment of the present utility model, a circuit breaker electromagnetic mechanism is provided.

Example 1

As shown in fig. 1-4, according to an embodiment of the present utility model, an electromagnetic mechanism of a circuit breaker includes a wire inlet board 1, a coil 2, a magnetic yoke 3, a static contact board 4 and an iron core component 5, two ends of the coil 2 are respectively electrically connected with the wire inlet board 1 and the static contact board 4, the static contact board 4 is fixed on the magnetic yoke 3, an insulating sleeve 6 is arranged on the surface of the coil 2, a refrigeration shell 7 is fixedly sleeved outside the iron core component 5, a refrigeration liquid 8 is arranged in an inner cavity of the refrigeration shell 7, a semiconductor refrigeration sheet 9 is arranged on the surface of the refrigeration shell 7, the semiconductor refrigeration sheet 9 can rapidly refrigerate the refrigeration liquid 8, the refrigeration liquid 8 can rapidly cool the coil 2, the wire inlet board 1 includes a board body 10, a thickness surface 11 and a width surface 12 are arranged on the board body 10, the static contact board 4 includes a static contact board main body 13, a U-shaped arc channel 14, a welding surface 15, a fixing hole 16, a positioning groove 17, a static contact 18 is arranged in the inner cavity of the positioning groove 17, the U-shaped arc channel 14 forms a strong U-shaped current blowing path, a strong breaking contact can be started, a strong breaking mechanism can be started when a short-circuit breaking mechanism can be started, and a breaking mechanism can be started, and a breaking mechanism can be broken.

Example two

As shown in fig. 1-4, according to an embodiment of the present utility model, an electromagnetic mechanism of a circuit breaker includes a wire inlet plate 1, a coil 2, a magnetic yoke 3, a static contact plate 4 and an iron core component 5, two ends of the coil 2 are respectively electrically connected with the wire inlet plate 1 and the static contact plate 4, the static contact plate 4 is fixed on the magnetic yoke 3, an insulating sleeve 6 is arranged on the surface of the coil 2, a refrigeration shell 7 is fixedly sleeved outside the iron core component 5, a refrigerating liquid 8 is arranged in an inner cavity of the refrigeration shell 7, a semiconductor refrigerating sheet 9 is arranged on the surface of the refrigeration shell 7, the semiconductor refrigerating sheet 9 can rapidly cool the refrigerating liquid 8, the refrigerating liquid 8 can rapidly cool the coil 2, the wire inlet plate 1 and the coil 2 are welded and connected, and a welding surface 15 of the wire inlet plate 1 and the coil 2 is located at a thickness surface 11 of the wire inlet plate 1, an included angle and an included angle are formed between adjacent arc-shaped channels 14 close to the welding surface 15 of the wire inlet plate 1 and the welding surface 15, and the welding surface 15 are arranged on the wire inlet plate 1 and the welding surface 11 by arranging the welding surface 15 of the wire inlet plate 2, so that the wire inlet plate 1 and the wire inlet plate 2 and the thickness surface 12 are regarded as being perpendicular to the width surface 11 of the wire inlet plate 1 and the wire inlet plate 2, the wire inlet plate 2 can be cooled, and the wire inlet plate 2, and the coil 2 can be further cooled, and the electromagnetic mechanism can further reduce the cross-sectional area of the coil 2.

Example III

As shown in fig. 1-4, according to an embodiment of the present utility model, an electromagnetic mechanism of a circuit breaker includes a wire feeding plate 1, a coil 2, a magnetic yoke 3, a static contact plate 4 and an iron core component 5, two ends of the coil 2 are respectively electrically connected with the wire feeding plate 1 and the static contact plate 4, the static contact plate 4 is fixed on the magnetic yoke 3, an insulating sleeve 6 is arranged on the surface of the coil 2, a refrigeration shell 7 is fixedly sleeved outside the iron core component 5, a refrigeration liquid 8 is arranged in an inner cavity of the refrigeration shell 7, a semiconductor refrigeration sheet 9 is arranged on the surface of the refrigeration shell 7, the semiconductor refrigeration sheet 9 can rapidly refrigerate the refrigeration liquid 8, the refrigeration liquid 8 can rapidly cool the coil 2, a static contact 18 is placed in the positioning groove 17, a part of the static contact 18 is located on a welding surface 15, and another part of the static contact 18 is located on an adjacent arc striking surface, so that a distance/a step between the static contact 18 and the arc striking surface can be reduced, which is beneficial to arc jumping.

In summary, by means of the technical scheme of the utility model, when the device is used, the semiconductor refrigerating piece 9 can rapidly refrigerate the refrigerating fluid 8, the refrigerating fluid 8 can rapidly cool the coil 2, the U-shaped arc channel 14 forms a strong U-shaped magnetic blowing current path, a strong magnetic field repulsive start contact can be generated during short circuit breaking, the breaking speed of the mechanism is accelerated, the breaking capacity of the circuit breaker is improved, and the width surface 12 of the wire inlet board 1 perpendicular to the thickness surface 11 can be regarded as the extension of the coil 2 by arranging the welding surface 15 of the wire inlet board 1 and the coil 2 on the thickness surface 11, so that the excitation strength of the coil 2 is enhanced, the use of materials of the coil 2 is reduced, the occupation space of an electromagnetic mechanism is further reduced, and the conductive sectional area of the coil 2 can be allowed to be made larger.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a circuit breaker electromagnetic mechanism, includes into wiring board (1), coil (2), yoke (3), static contact board (4) and iron core subassembly (5), its characterized in that: the utility model discloses a motor, including coil (2), fixed shell (7), refrigerating shell (7) inner chamber, fixed shell (7) surface is equipped with semiconductor refrigeration piece (9), coil (2) are equipped with insulating cover (6), coil (2) both ends are connected with advance wiring board (1) and static contact board (4) electricity respectively, static contact board (4) are fixed on yoke (3), coil (2) surface, fixed cover in the outside of iron core subassembly (5) is equipped with refrigeration shell (7), refrigeration shell (7) inner chamber is equipped with refrigerating fluid (8), refrigeration shell (7) surface is equipped with semiconductor refrigeration piece (9).

2. A circuit breaker electromagnetic mechanism as claimed in claim 1 wherein: the wire inlet and connecting plate (1) comprises a plate body (10), and a thickness surface (11) and a width surface (12) are arranged on the plate body (10).

3. A circuit breaker electromagnetic mechanism as claimed in claim 2 wherein: the static contact plate (4) comprises a static contact plate main body (13), wherein a U-shaped arc channel (14), a welding surface (15), a fixing hole (16) and a positioning groove (17) are arranged on the static contact plate main body (13), and a static contact point (18) is arranged in an inner cavity of the positioning groove (17).

4. A circuit breaker electromagnetic mechanism according to claim 3 wherein: the wire inlet and connecting plate (1) is connected with the coil (2) in a welding way, and a welding surface (15) of the wire inlet and connecting plate (1) and the coil (2) is positioned on a thickness surface (11) of the wire inlet and connecting plate (1).

5. A circuit breaker electromagnetic mechanism as recited in claim 4 wherein: an included angle and an included angle fold line are formed between the adjacent arc-inducing surface of the U-shaped arc channel (14) close to the welding surface (15) and the welding surface (15).

6. A circuit breaker electromagnetic mechanism as recited in claim 5 wherein: the static contact (18) is arranged in the positioning groove (17), and one part of the static contact (18) is positioned on the welding surface (15) and the other part is positioned on the adjacent arc-guiding surface.