断路器及环网柜

Abstract

本实用新型涉及中压电器技术领域，公开了一种断路器及环网柜。断路器包括动触头、静触头、第一支架、储能组件、合闸半轴、机构主轴、第一连锁件和第二连锁件，储能组件与机构主轴传动连接，用于储存或释放弹性势能；合闸半轴用于使储能组件保持储能状态或释放弹性势能，储能组件释放弹性势能驱动机构主轴带动动触头与静触头合闸；第一连锁件与第一支架滑动配合，连接隔离开关的锁片，在隔离开关处于分闸状态时，锁片使第一连锁件抵压并锁定合闸半轴；第二连锁件与第一支架滑动配合，并在第二锁定位置时遮挡隔离开关的操作部，机构主轴合闸时，将第二连锁件限位于第二锁定位置。该断路器能够保证其与隔离开关的操作顺序，结构简单、可靠性高。

Claims

1. A circuit breaker characterized by, The circuit breaker includes a moving contact (121), a stationary contact (122), and an operating mechanism (20). The operating mechanism (20) includes a first support (21), an energy storage component (22), a closing half-shaft (23), and a mechanism main shaft (24). The energy storage component (22) is mounted on the first support (21) and is connected to the mechanism main shaft (24) for storing or releasing elastic potential energy. The closing half-shaft (23) rotates with the first support (21) to keep the energy storage component (22) in an energy storage state or release elastic potential energy. The energy storage component (22) releases elastic potential energy to drive the mechanism main shaft (24) to rotate and drive the moving contact (121) to close with the stationary contact (122). The circuit breaker also includes: The first interlocking member (31) slides with the first bracket (21) and is used to connect with the locking plate (60) of the disconnecting switch. When the disconnecting switch is in the open state, the locking plate (60) makes the first interlocking member (31) located in the first locking position. In the first locking position, the first interlocking member (31) presses against and locks the closing half shaft (23). The second interlocking member (41) slides with the first bracket (21) and can move between the second locked position and the second unlocked position. When the second interlocking member (41) is in the second locked position, it blocks the operation part of the isolating switch. When the main shaft (24) of the mechanism is in the closed state, it limits the second interlocking member (41) to the second locked position.

2. The circuit breaker of claim 1, wherein, The circuit breaker also includes: A first elastic reset member (32) is connected to the first interlock member (31) and the first bracket (21). The first elastic reset member (32) is configured to drive the first interlock member (31) to a first unlocked position, in which the first interlock member (31) is separated from the closing half-shaft (23); and / or The second elastic reset member (42) is connected to the second interlock member (41) and the first bracket (21), and the second elastic reset member (42) is configured to drive the second interlock member (41) to the second locked position.

3. The circuit breaker of claim 1, wherein The main shaft (24) of the mechanism includes a main shaft body (241) and a first cam part (242). The main shaft body (241) is rotatably engaged with the first bracket (21). The first cam part (242) is fixedly connected to the main shaft body (241) and is used to limit the second interlocking member (41) to the second locking position when the main shaft (24) of the mechanism is in the closed state. and / or One end of the first interlocking member (31) is used to abut against the closing half shaft (23), and the other end is provided with a connecting part (311). The locking piece (60) is connected to the connecting part (311) by a fastener; and / or One end of the second interlocking member (41) is provided with a stop (411), the stop (411) being configured to be limited by the main shaft (24) of the mechanism in the closed state; and / or The other end of the second interlocking member (41) is provided with a shielding part (412), which is configured to shield the operating part of the disconnecting switch.

4. The circuit breaker of claim 1, wherein One of the first interlocking member (31) and the first bracket (21) is provided with a first waist-shaped hole (312), and the other is provided with a first connecting member (33). The first connecting member (33) passes through the first waist-shaped hole (312) and can slide along the first waist-shaped hole (312). and / or Of the second interlocking member (41) and the first bracket (21), one is provided with a second oblong hole (413), and the other is provided with a second connecting member (43), the second connecting member (43) passing through the second oblong hole (413) and being able to slide along the second oblong hole (413); and / or Of the first bracket (21) and the first interlocking member (31), one is provided with a first guide groove (313), and the other is provided with a first guide protrusion (211). The first guide protrusion (211) slides with the first guide groove (313) and is used to guide the first interlocking member (31); and / or Of the first bracket (21) and the second interlocking member (41), one is provided with a second guide groove and the other is provided with a second guide protrusion. The second guide protrusion slides in cooperation with the second guide groove and is used to guide the second interlocking member (41).

5. The circuit breaker of any one of claims 1-4, wherein, The circuit breaker also includes a second bracket (11), a switch spindle (13), and a transmission handle (50). The stationary contact (122) is mounted on the second bracket (11). The switch spindle (13) is rotatably engaged with the second bracket (11). The moving contact (121) is drivenly connected to the switch spindle (13). The switch spindle (13) is set at an angle to the mechanism spindle (24). The two ends of the transmission handle (50) are respectively connected to the mechanism spindle (24) and the switch spindle (13) through universal joint bearings.

6. The circuit breaker of any one of claims 1-4, wherein, The circuit breaker also includes: Second support (11); A vacuum interrupter (123) is provided, wherein a stationary contact (122) is connected to one end of the vacuum interrupter (123) and partially extends into the vacuum interrupter (123), and a moving contact (121) is connected to the other end of the vacuum interrupter (123) and partially extends into the vacuum interrupter (123). The moving contact (121) is slidable relative to the vacuum interrupter (123) to connect or disconnect with the stationary contact (122). An insulating barrel (151) is connected to the second bracket (11), and the vacuum interrupter (123) is installed inside the insulating barrel (151).

7. The circuit breaker of claim 6, wherein, The upper end of the insulating barrel (151) is provided with an opening for the vacuum interrupter (123) to be inserted into the insulating barrel (151); The circuit breaker also includes an insulating cover (154) which covers the opening. The insulating cover (154) has at least one connecting hole (1541) that connects the inner and outer sides of the insulating cover (154).

8. The circuit breaker of claim 6, wherein, The circuit breaker also includes a conductor (152) and a conductive fastener (16). The conductor (152) is used for wiring and is embedded in the bottom of the insulating barrel (151). The conductive fastener (16) passes through the conductor (152) and is connected to the stationary contact (122) to mechanically connect the vacuum interrupter (123) and the insulating barrel (151) and electrically connect the stationary contact (122) and the conductor (152).

9. The circuit breaker of claim 6, wherein, The circuit breaker also includes a flexible insulating cover (17), which covers the vacuum interrupter (123) and has an outer structure of an umbrella skirt.

10. Ring main unit, characterized in that It includes a disconnecting switch and a circuit breaker as described in any one of claims 1-9, wherein the disconnecting switch and the circuit breaker are connected in series.

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