Vacuum tube type automatic double-power supply switching device

Abstract

The invention discloses a vacuum tube type automatic double-power supply switching device. The device is characterized in that moving contacts of each two vacuum switch tubes in the same specificationare coaxially butted through a connecting rod shaft, the length of the connecting rod is adjusted so as to enable to the two vacuum switch tubes to be respectively in an opening state and a closing state, and the opening range of the vacuum switch tube in the opening state meets the technical requirement on the opening range of the vacuum switch tube; and a synchronous driving frame is arranged between the two vacuum switch tubes, is arranged in a left-right movable manner and is pushed by a bistable state permanent-magnet electromagnet, the moving contact of the vacuum switch tube on the left side is pushed to move leftwards when the synchronous driving frame moves leftwards, the moving contact of the vacuum switch tube on the right side is pushed to move rightwards when the synchronousdriving frame moves rightwards, and an iron core stroke of the bistable state permanent-magnet electromagnet is equal to the sum of the opening range of the vacuum switch tube and a pressure excess stroke of the moving contact of the vacuum switch tube. According to the vacuum tube type automatic double-power supply switching device, the power supply conversion time can be greatly shortened, the continuous load in the conversion process is realized; and the structural size is small, the driving force of an electromagnet is small, and the product performance is reliable.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a vacuum tube type dual power supply automatic switching device. Background technique [0002] With the rapid development of social economy, modern life and modern industry require uninterrupted power supply. Foreign developed countries (especially the United States and Japan) regard ATS and supporting products as part of the power supply. Therefore, the selection and use of ATS is very cautious. Conventionally, PC-level products are preferred in dual-power emergency power supply systems, and the switch is not allowed to stop in the middle (that is, without zero position) during the conversion process. In its use, the minimum power-off time has the greatest use value. In my country's high and low voltage power supply network, many departments require uninterruptible power supply, such as: base stations, hospitals, telecommunications, banks, and smart homes. The dual power...

AI Technical Summary

Problems solved by technology

However, the opening of the vacuum tube requires the setting of a normally open spring. The normally open spring takes up a large space, and the operating force to overcome the normally open spring is very large. An electromagnet configuration with a large driving force is required, and the above configuration will shorten the power conversion time. It will be longer, so in the prior art, there is no precedent for dual power automatic switching devices using vacuum tubes

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