Indoor high-voltage vacuum circuit breaker

Abstract

The utility model discloses an indoor high-voltage vacuum circuit breaker, which relates to the field of circuit breakers, and comprises an operating mechanism and a vacuum arc-extinguishing chamber, the operating mechanism comprises a cam and an opening tripping plate arranged on the side surface of the cam, an opening electromagnet is arranged below the opening tripping plate, and the vacuum arc-extinguishing chamber is arranged below the opening electromagnet. The opening electromagnet is installed on a support of an operating mechanism through a mounting seat, and the mounting seat is provided with a plurality of strip-shaped holes and is connected with the support through bolts. The utility model has the advantage of strong adjustability.

Description

Technical Field

[0001] This utility model relates to the field of circuit breakers, specifically to an indoor high-voltage vacuum circuit breaker. Background Technology

[0002] Existing indoor high-voltage vacuum circuit breakers, such as the open-type air-insulated vacuum circuit breaker protection device and protection method disclosed in CN105788952A on 2016-07-20, have a trip unit that can only meet the needs of a single voltage level and cannot adapt to pressure changes between moving and stationary contacts under different voltage levels. This can lead to malfunctions that may cause catastrophic accidents, and it has the disadvantage of poor adjustability. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides an indoor high-voltage vacuum circuit breaker with high adjustability.

[0004] The technical solution adopted by this utility model is as follows: an indoor high-voltage vacuum circuit breaker, including an operating mechanism and a vacuum interrupter. The operating mechanism includes a cam and a tripping plate installed on the side of the cam. A tripping electromagnet is installed below the tripping plate. The tripping electromagnet is installed on the bracket of the operating mechanism through a mounting base. The mounting base is provided with several strip holes and is connected to the bracket by bolts.

[0005] The trip electromagnet includes a coil fixed to the mounting base and an iron core surrounded by the coil.

[0006] The lower end of the iron core is provided with a push rod and a return spring.

[0007] The vacuum interrupter includes a tubular insulating cylinder made of epoxy resin.

[0008] The lower end of the vacuum interrupter is equipped with a disc spring, and the lower end of the disc spring is provided with an insulating pull rod. A transmission crank arm is provided between the insulating pull rod and the operating mechanism to link the two.

[0009] The beneficial effects of this utility model are as follows: This technical solution mounts the trip electromagnet on the support of the operating mechanism through a mounting base, and by setting a strip hole on the mounting base, the installation position of the trip electromagnet can be adjusted through the strip hole, thereby changing the force point of the trip plate, that is, changing the torque of the trip plate. Therefore, this utility model can be applied to various situations with different torque requirements and has the advantage of strong adjustability. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of an indoor high-voltage vacuum circuit breaker according to an embodiment of this utility model. Detailed Implementation

[0011] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0012] As shown in the figure, an indoor high-voltage vacuum circuit breaker includes an operating mechanism 1 and a vacuum interrupter 2. The operating mechanism 1 includes a cam 3 and a tripping plate 4 mounted on the side of the cam 3. A tripping electromagnet is installed below the tripping plate 4. The tripping electromagnet is mounted on a bracket 6 of the operating mechanism 1 via a mounting base 5. The mounting base 5 has several slotted holes 7 and is connected to the bracket 6 by bolts 8. In this technical solution, the tripping electromagnet is mounted on the bracket of the operating mechanism via a mounting base. By providing slotted holes on the mounting base, the installation position of the tripping electromagnet can be adjusted through the slotted holes, thereby changing the force point of the tripping plate, that is, changing the rotational torque of the tripping plate. Therefore, this utility model can be applied to various situations with different rotational torque requirements and has the advantage of strong adjustability.

[0013] The trip electromagnet includes a coil 9 fixed to the mounting base 5 and an iron core 10 surrounded by the coil 9. When the trip electromagnet is energized, the iron core moves, causing a point on one end of the trip plate to be moved upward by force, which drives the cam on the other end of the trip plate to rotate, thereby realizing the trip.

[0014] The lower end of the iron core 10 is provided with a push rod 16 and a reset spring 11. The reset spring is sleeved on the push rod, and both ends are limited by the coil and the top flange of the push rod. The other end of the push rod is fixedly connected to the iron core. When the coil is energized, the iron core is forced to move upward and hit the trip plate.

[0015] The vacuum interrupter 2 includes a tubular insulating cylinder 12, which is cast from epoxy resin, making it particularly resistant to creepage. This structural design greatly reduces the accumulation of dust on the surface of the interrupter, which not only prevents the vacuum interrupter from being affected by external factors, but also ensures that it can exhibit a high resistance state to voltage effects even in humid, hot and dirty environments.

[0016] The lower end of the vacuum interrupter 2 is equipped with a disc spring 13, and the lower end of the disc spring 13 is provided with an insulating pull rod 14. A transmission crank arm 15 is provided between the insulating pull rod 14 and the operating mechanism 1 to link the two.

[0017] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the inventive concept of this utility model is not limited to this utility model. Any modifications that utilize the inventive concept will be included within the scope of protection of this patent.

Claims

1. An indoor high-voltage vacuum circuit breaker, comprising an operating mechanism (1) and a vacuum interrupter (2), characterized in that: The operating mechanism (1) includes a cam (3) and a tripping plate (4) installed on the side of the cam (3). A tripping electromagnet is installed below the tripping plate (4). The tripping electromagnet is installed on the bracket (6) of the operating mechanism (1) through a mounting base (5). The mounting base (5) is provided with several strip holes (7) and is connected to the bracket (6) by bolts (8).

2. The indoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The trip electromagnet includes a coil (9) fixed to the mounting base (5) and an iron core (10) surrounded by the coil (9).

3. The indoor high-voltage vacuum circuit breaker according to claim 2, characterized in that: The lower end of the iron core (10) is provided with a push rod (16) and a return spring (11).

4. The indoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The vacuum interrupter (2) includes a tubular insulating cylinder (12) made of epoxy resin.

5. The indoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The lower end of the vacuum interrupter (2) is equipped with a disc spring (13), and the lower end of the disc spring (13) is provided with an insulating pull rod (14). The insulating pull rod (14) and the operating mechanism (1) are connected by a transmission crank arm (15).

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