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Double-counterforce opening-distance-adjustable intelligent switching device and working method thereof

A technology of intelligent switch and working method, which is applied to the power device inside the switch, contact vibration/shock damping, etc., can solve the problems of electromagnetic control and protection switch service life, failure to realize intelligent control, aging of return spring, etc. Achieve the effects of short closing and breaking time, long electrical life, and reduced collision speed

Pending Publication Date: 2022-03-25
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this solution is that no matter whether it is breaking a short-circuit fault, an overload fault or a normal and frequent breaking, the maximum opening distance must be reached. If the current is frequently broken with a large opening distance and then reset by the return spring, it will cause the return spring to break quickly. Aging and serious mechanical wear will affect the service life of the electromagnetic control and protection switch, so it is not suitable for occasions where the normal rated current is frequently switched on and off
In addition, these schemes do not realize the intelligent control of the breaking process

Method used

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  • Double-counterforce opening-distance-adjustable intelligent switching device and working method thereof
  • Double-counterforce opening-distance-adjustable intelligent switching device and working method thereof
  • Double-counterforce opening-distance-adjustable intelligent switching device and working method thereof

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Embodiment 1

[0029] An intelligent switching appliance with double reaction force and adjustable opening distance, refer to figure 1, including an electromagnetic mechanism, a contact mechanism, a connecting mechanism 4 and a control module; the electromagnetic mechanism includes a moving iron core 5, a static iron core 9, a coil 7, a first reaction force spring 6 and a second reaction force spring 8; the moving iron core 5. The static iron core 9 is E-type, the static iron core 9 is placed on a base, the air gap is between the moving iron core 5 and the static iron core 9, and the open distance, the coil 7 is sleeved on the static iron core 9, and the first reaction force spring 6 and the second reaction force spring 8 are compressed or stretched in the moving direction of the moving iron core 5; The length of force spring 6 is longer than the length of described second reaction force spring 8, and the stiffness coefficient of described first reaction force spring 6 is less than the stiff...

Embodiment 2

[0033] The main difference between this embodiment and Embodiment 1 lies in the shape of the iron core and the setting position of the reaction force spring. refer to figure 2 , the moving iron core 5 and the static iron core 9 are U-shaped; the second reaction force spring 8 is sleeved on the outside of the first reaction force spring 6, and one end of the first reaction force spring 6 and the second reaction force spring 8 fixed on the base; the other end of the first reaction force spring 6 is fixedly connected to the side of the connecting mechanism 4 facing the base; the side of the connecting mechanism 4 facing the base is also fixedly connected to the moving Iron core 5; when the moving iron core 5 moves downward, both ends of the first reaction force spring 6 and the second reaction force spring 8 are compressed by the connecting mechanism 4 and the base respectively. In this embodiment, the second reaction force spring 8 is sleeved on the outside of the first reacti...

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Abstract

The invention provides a double-counterforce opening-distance-adjustable intelligent switching device and a working method thereof. The double-counterforce opening-distance-adjustable intelligent switching device comprises an electromagnetic mechanism, a contact mechanism, a control module, a connecting mechanism and a base. The electromagnetic mechanism comprises a movable iron core, a static iron core, a coil, a first counter-force spring and a second counter-force spring; the length of the first reaction spring is larger than that of the second reaction spring, and the stiffness coefficient of the first reaction spring is smaller than that of the second reaction spring. The contact mechanism is composed of a moving contact, a static contact and a contact spring. And a gap is formed between the moving contact and the static contact. Through compression of the first reaction spring and the second reaction spring, the attraction impact force of the iron core is reduced; during breaking, large counter-force is generated through release of the first counter-force spring and the second counter-force spring, and the breaking speed of the contact is increased. The size and the breaking type of the breaking current are detected through the control module, the opening distance of the contact is adjusted according to requirements, intelligent control over the breaking process is achieved, and the purpose of prolonging the service life of a switching device is achieved.

Description

technical field [0001] The invention relates to the technical field of low-voltage switching appliances, in particular to an intelligent switching appliance with double reaction force and adjustable opening distance and its working method. Background technique [0002] As people's demand for switching appliances continues to increase, control appliances and protection appliances are no longer two independent switching appliances. The integrated switch on the market is a modular control and protection system, which can switch on and off the current under normal or abnormal circuit conditions, but it is expensive, and the combination of multiple devices will inevitably reduce the reliability of the system. Certain limitations. The integrated electromagnetic control and protection switch does not have a complex tripping mechanism as a whole, and the number of parts is greatly reduced compared with the modular combination control and protection switch. The simpler structure ens...

Claims

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Application Information

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IPC IPC(8): H01H3/60H01H3/28
CPCH01H3/60H01H3/28
Inventor 刘向军陈伟斌
Owner FUZHOU UNIVERSITY
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