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Vacuum switch tube

A vacuum switching tube and casing technology, which is applied in electric switches, high-voltage/high-current switches, high-voltage air circuit breakers, etc., can solve the problems of unusable shielding cover, high temperature of shielding cover, and low safety, so as to maintain sensitivity , high safety, avoid the effect of overheating

Inactive Publication Date: 2014-07-23
KUNSHAN DAGONG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shielding cover of the existing design has only one layer structure, which is not safe and easy to damage, and once the shielding cover damages the entire vacuum switch tube, it cannot be used
On the other hand, a large part of the energy of the arc is consumed on the shield during the breaking process, which makes the temperature of the shield quite high

Method used

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  • Vacuum switch tube

Examples

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Embodiment Construction

[0013] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0014] Such as figure 1 As shown, a vacuum switch tube includes a transparent insulating shell 1, and its material can be transparent hard glass, transparent glass-ceramic or other inorganic insulating materials. For the convenience of description, the figure 1 The directions in are standard to describe the positional relationship of each component.

[0015] The top of the transparent insulating shell 1 is provided with a static end cover 7, the bottom of the transparent insulating shell 1 is provided with a moving end cover 8, the static conductive rod 2 runs through the static end cover 7 from top to bottom, and the movable conductive rod 3 runs...

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Abstract

The invention discloses a vacuum switch tube. The vacuum switch tube comprises a transparent insulating shell, wherein a fixed end cover plate is arranged on the top of the transparent insulating shell, a movable end cover plate is arranged at the bottom of the transparent insulating shell, a fixed electric conduction rod penetrates through the fixed end cover plate from top to bottom, a movable contact is arranged at the bottom of the fixed electric conduction rod, a movable electric conduction rod penetrates through the movable end cover plate from bottom to top, a movable contact corresponding to the fixed contact is arranged on the top of the movable electric conduct rod, and a corrugated pipe is arranged outside the movable electric conduction rod. The vacuum switch tube is characterized in that inner layer shielding covers are wrapped on the fixed contact and the movable contact in a sealed mode, and outer layer shielding covers are wrapped on the inner layer shielding covers in a sealed mode. The double-layer shielding cover structure is adopted, and therefore safety is higher; a cooling structure is further arranged, and therefore the temperature of the shielding covers is prevented from being excessively high.

Description

technical field [0001] The invention relates to a vacuum switch tube. Background technique [0002] Vacuum switching tube, also known as vacuum interrupter, through the excellent insulation of the vacuum inside the tube, the medium and high voltage circuits can quickly extinguish the arc and suppress the current after the power supply is cut off, so as to avoid accidents and accidents. It has the advantages of energy saving, material saving, fire prevention, explosion protection, small size, long life, low maintenance cost, reliable operation and no pollution. [0003] Among them, the vacuum switch tube is equipped with a shield around the contact, which can block the outlet of the arc product, avoid metal vapor splashing on other components when the arc is extinguished, and absorb arc energy at the same time, preventing the shell from being polluted by the arc product and causing insulation. Strength reduction and insulation breakdown. The existing design of the shielding...

Claims

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Application Information

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IPC IPC(8): H01H33/664H01H33/662
Inventor 任育文
Owner KUNSHAN DAGONG ELECTRONICS
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