CN215770980U

CN215770980U - Bipolar permanent magnet indoor vacuum circuit breaker

Info

Publication number: CN215770980U
Application number: CN202121020921.6U
Authority: CN
Inventors: 郭桂枝; 刘春佳
Original assignee: Henan Jinglichuang Intelligent Electric Co ltd
Current assignee: Henan Jinglichuang Intelligent Electric Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2022-02-08
Anticipated expiration: 2031-05-13

Abstract

The utility model provides a bipolar permanent magnet indoor vacuum circuit breaker, which comprises a vacuum circuit breaker body, wherein the opening or closing of the vacuum circuit breaker body is realized through an operating mechanism and a corresponding control mechanism which are arranged on the vacuum circuit breaker body; the operating mechanism is a permanent magnet operating mechanism and comprises a shell, a coil and a first magnet are fixedly arranged in the shell, a magnetic core is also arranged in the shell, the magnetic core comprises a sliding shaft penetrating through the shell and a second magnet fixedly arranged on the sliding shaft, a tension spring for forcing the magnetic core to be far away from the coil is arranged in the shell, and the bottom of the sliding shaft is connected with an insulating pull rod for switching off or switching on through a linkage mechanism; the control mechanism comprises an intelligent controller, and a switching-off capacitor and a switching-on capacitor which are electrically connected with the intelligent controller, wherein the switching-off capacitor and the switching-on capacitor are both electrically connected with the coil. The utility model has simple and ingenious structural design, can efficiently realize the switching-off and switching-on operations of the vacuum circuit breaker, has high degree of automation and is convenient to use in an intelligent power grid.

Description

Bipolar permanent magnet indoor vacuum circuit breaker

Technical Field

The utility model belongs to the technical field of circuit breakers, and particularly relates to a bipolar permanent magnet indoor vacuum circuit breaker.

Background

With the rapid development of national smart power grids and the gradual maturity of permanent magnet switching technology, more and more permanent magnet mechanism breakers are applied to power grids, but the situation that the breakers are not suitable for the electrical comprehensive protection is mostly generated in the matching process, and an additional protection device is needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a bipolar permanent magnet indoor vacuum circuit breaker, which has the following specific scheme:

a bipolar permanent magnet indoor vacuum circuit breaker comprises a vacuum circuit breaker body, wherein the opening or closing of the vacuum circuit breaker body is realized through an operating mechanism and a corresponding control mechanism which are arranged on the vacuum circuit breaker body; the operating mechanism is a permanent magnet operating mechanism and comprises a shell, a coil and a first magnet are fixedly arranged in the shell, a magnetic core is further arranged in the shell, the magnetic core comprises a sliding shaft penetrating through the shell and a second magnet fixedly arranged on the sliding shaft, a tension spring for forcing the magnetic core to be far away from the coil is arranged in the shell, and the bottom of the sliding shaft is connected with an insulating pull rod for switching off or switching on through a linkage mechanism; the control mechanism comprises an intelligent controller, and a switching-off capacitor and a switching-on capacitor which are electrically connected with the intelligent controller, wherein the switching-off capacitor and the switching-on capacitor are electrically connected with the coil.

On the basis, still be equipped with the emergent operating device of separating brake on the vacuum circuit breaker body, the emergent operating device of separating brake includes the separating brake operating axis and sets up the cam of separating brake operating axis tip, cam and the flange butt that sets up on the sliding shaft top.

Based on the above, the linkage mechanism further comprises a tension spring for forcing the magnetic core away from the first magnet.

Compared with the prior art, the utility model has substantive characteristics and progress, and particularly has the following advantages:

1. according to the utility model, the switching-off and switching-on operations of the vacuum circuit breaker are realized through the operating mechanism and the control mechanism which are matched with each other, wherein the control mechanism comprises an intelligent controller, a switching-off capacitor and a switching-on capacitor which are electrically connected with the intelligent controller, the switching-off capacitor and the switching-on capacitor are both electrically connected with a coil in the operating mechanism, and the switching-off and switching-on functions and the stable realization of the switching-off and switching-on operations can be effectively ensured through the separated work of the switching-off capacitor and the switching-on capacitor.

2. According to the utility model, the tension spring and the tension spring are structurally designed to further ensure that the opening operation can be rapidly realized.

3. According to the intelligent power distribution system, the controller can highly integrate the AC/DC capacitor charging function, the jump prevention function, the no-voltage tripping function, the closing locking function, the fault early warning function and the comprehensive protection adapting function, completely meets the control requirement of power distribution automation, and is perfectly applied to an intelligent power grid.

Drawings

Fig. 1 is an external structural view of the present invention.

Fig. 2 is a schematic structural diagram of the present invention in a closing state.

In the figure: 1. a vacuum circuit breaker body; 2. a housing; 3. a coil; 4. a first magnet; 5. a sliding shaft; 6. a second magnet; 7. a tension spring; 8. a linkage mechanism; 8-1, a tension spring; 9. a brake separating operation shaft; 10. a cam; 11. a flange; 12. an insulating pull rod; 13. a gate-separating capacitor; 14. a switching-on capacitor; 15. an intelligent controller.

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments.

Examples

As shown in fig. 1-2, the present invention provides a bipolar permanent magnet indoor vacuum circuit breaker, which comprises a vacuum circuit breaker body 1, wherein the opening or closing of the vacuum circuit breaker body 1 is realized by an operating mechanism and a corresponding control mechanism arranged on the vacuum circuit breaker body 1.

The operating mechanism is a permanent magnet operating mechanism and comprises a shell 2, a coil 3 and a first magnet 4 are fixedly arranged in the shell 2, a magnetic core is further arranged in the shell 2 and comprises a sliding shaft 5 penetrating through the shell 2 and a second magnet 6 fixedly arranged on the sliding shaft 5, a tension spring 7 forcing the magnetic core to be far away from the coil 3 is arranged in the shell 2, and the bottom of the sliding shaft 5 is connected with an insulating pull rod 12 used for opening or closing a brake through a linkage mechanism 8.

The control mechanism comprises an intelligent controller 15, and a switching-off capacitor 13 and a switching-on capacitor 14 which are electrically connected with the intelligent controller 15, wherein the switching-off capacitor 13 and the switching-on capacitor 14 are both electrically connected with the coil 3.

Considering that the secondary circuit operation power supply may have a fault and needs to be overhauled in the using process of the vacuum circuit breaker, an opening emergency operation mechanism is further arranged on the vacuum circuit breaker body 1, the opening emergency operation mechanism comprises an opening operation shaft 9 and a cam 10 arranged at the end part of the opening operation shaft 9, and the cam 10 is abutted to a flange 11 arranged at the top end of the sliding shaft 5.

In order to ensure that the switching-off operation can be completed quickly, the linkage mechanism 8 further comprises a tension spring 8-1 for forcing the magnetic core to be far away from the first magnet 4.

The utility model has the specific working principle that: during closing, the intelligent controller 15 controls the closing capacitor 14 to supply power to the coil 3, an electromagnetic field generated by the coil 3 is superposed with a permanent magnetic field generated by the magnetic core in a positive direction, the magnetic core is forced to move downwards by the magnetic attraction force between the first magnet 4 and the second magnet 6, the insulating pull rod 12 is driven to move upwards by the linkage mechanism 8 to complete closing, the tension spring 7 is in a compression energy storage state, and the tension spring 8-1 is in a tension energy storage state; during opening, the intelligent controller 15 controls the opening capacitor 13 to supply power to the coil 3, an electromagnetic field generated by the coil 3 is reversely superposed with a permanent magnetic field generated by the magnetic core, a repulsive force is generated between the first magnet 4 and the second magnet 6, the magnetic core is forced to move upwards along with the tension generated by the tension spring 7 and the tension generated by the tension spring 8-1, and then the insulating pull rod 12 is driven to move downwards through the linkage mechanism 8 to complete opening.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.

Claims

1. A bipolar permanent magnet indoor vacuum circuit breaker is characterized in that: the vacuum circuit breaker comprises a vacuum circuit breaker body (1), wherein the switching-off or switching-on of the vacuum circuit breaker body (1) is realized through an operating mechanism and a corresponding control mechanism which are arranged on the vacuum circuit breaker body (1); the operating mechanism is a permanent magnet operating mechanism and comprises a shell (2), a coil (3) and a first magnet (4) are fixedly arranged in the shell (2), a magnetic core is further arranged in the shell (2), the magnetic core comprises a sliding shaft (5) penetrating through the shell (2) and a second magnet (6) fixedly arranged on the sliding shaft (5), a tension spring (7) forcing the magnetic core to be far away from the coil (3) is arranged in the shell (2), and the bottom of the sliding shaft (5) is connected with an insulating pull rod (12) for opening or closing through a linkage mechanism (8); the control mechanism comprises an intelligent controller (15), and a switching-off capacitor (13) and a switching-on capacitor (14) which are electrically connected with the intelligent controller (15), wherein the switching-off capacitor (13) and the switching-on capacitor (14) are electrically connected with the coil (3).

2. The bipolar permanent magnet indoor vacuum circuit breaker according to claim 1, characterized in that: still be equipped with the emergent operating device of separating brake on vacuum circuit breaker body (1), the emergent operating device of separating brake includes separating brake operating shaft (9) and sets up cam (10) of separating brake operating shaft (9) tip, cam (10) and flange (11) butt of setting on sliding shaft (5) top.

3. The bipolar permanent magnet indoor vacuum circuit breaker according to claim 1, characterized in that: the linkage mechanism (8) further comprises a tension spring (8-1) forcing the core away from the first magnet (4).