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Opening electromagnet of spring operating mechanism

An operating mechanism and electromagnet technology, applied in circuits, electric switches, electrical components, etc., can solve the problems of unstable low-voltage tripping and difficult design, and achieve easy control, avoiding insufficient space, and convenient disassembly and assembly Effect

Active Publication Date: 2021-06-08
TIANJIN PINGGAO INTELLIGENT ELECTRIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the first method is difficult to design and requires life test verification; the second method may lead to unstable low-voltage tripping; the third method needs to discuss with the electromagnet manufacturer and conduct multiple verifications

Method used

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  • Opening electromagnet of spring operating mechanism
  • Opening electromagnet of spring operating mechanism
  • Opening electromagnet of spring operating mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 with figure 2 As shown, the opening electromagnet of the spring operating mechanism is the opening electromagnet used by the spring operating mechanism in the vacuum circuit breaker, including the electromagnet main body 11, the moving iron core 21, the return spring 31 and the delay counterweight 41, It is transformed on the basis of the existing opening electromagnet. The specific transformation content is to remove the spring seat at the rear end of the original moving iron core 21 and replace the delay counterweight 41.

[0037] The structure of the electromagnet main body 11 can adopt the structure in the prior art, and a coil 12 is arranged inside, and a moving iron core 21 is pierced in the coil 12 . The front end of the moving iron core 21 passes through the electromagnet main body 11, and a collision block 22 is fixed on the passing part, which is used to extend forward under the drive of the coil 12 to hit the opening pinch of the operating ...

Embodiment 2

[0041]The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the delay counterweight 41 is fixed on the rear end surface of the moving iron core 21 by screws 51, while in this embodiment, the delay counterweight 41 is fixed by riveting On the rear end face of the moving iron core 21. In other embodiments, after the weight of the delay counterweight 41 is determined, it can also be welded to the rear end surface of the moving iron core 21 .

Embodiment 3

[0043] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the delay counterweight 41 is a disc structure, while in this embodiment, the delay counterweight includes a base plate, and the front side of the base plate forms a spring stop surface , there are protrusions uniformly distributed along the circumferential direction on the front side of the substrate. Certainly, in other embodiments, the delay counterweight 41 may also be a plate-shaped structure, and in order to ensure that the delay counterweight 41 has a set weight, the radial dimension of the delay counterweight can be increased.

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Abstract

The invention relates to an opening electromagnet of a spring operating mechanism. The opening electromagnet of the spring operating mechanism comprises: an electromagnet main body which is internally provided with a coil; a movable iron core arranged in the coil in a penetrating manner; a reset spring used for driving the movable iron core to retreat so as to reset the movable iron core; and a delay counterweight fixed on the rear end surface of the movable iron core and is used for increasing the motion mass of the movable iron core so as to reduce the action speed of the movable iron core. The delay counterweight is provided with a spring stop surface, and the spring stop surface is flush with the end face of the rear end of the movable iron core and is used for supporting the end portion of the reset spring. According to the scheme, the opening time of the operating mechanism can be easily controlled.

Description

technical field [0001] The invention relates to an opening electromagnet of a spring operating mechanism. Background technique [0002] According to the requirements of GB1984-2014, for an arc extinguishing chamber with a DC component of 50% of the rated short-circuit breaking current and a frequency of 50Hz, the opening time of the vacuum circuit breaker should generally be guaranteed to be at least 20ms or more to avoid the current The peak of the amplitude is broken and the arc reignites. If the opening time is too short, the circuit breaker is prone to breakdown when breaking the full-capacity current. When the existing circuit breaker is opened by high-voltage operation, the spring operating mechanism relies on the opening electromagnet to trigger the opening action. The opening electromagnet includes an electromagnet main body, a coil is arranged inside the electromagnet main body, and a moving iron core is pierced in the coil, which is used to reach forward under th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/666
CPCH01H33/666
Inventor 侯小默方煜瑛李建兵张罗锐汪想琴董泽龙陈金英廉继英王小焕张敬涛于洪宇杨明淳王永耀庞晓梦姚锋娟齐婵焦淑敏王茜
Owner TIANJIN PINGGAO INTELLIGENT ELECTRIC
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