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Vacuum discharge tube

A technology of vacuum discharge and discharge gap, applied in the direction of single discharge channel tube, etc., can solve the problems of electrode ablation, poor arc extinguishing performance, affecting the service life of discharge tube, etc., and achieve the effect of prolonging service life

Inactive Publication Date: 2014-04-16
蒋贤华 +1
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0004] At present, the most common way is to put the discharge electrode into the atmosphere, but when the discharge electrode is punctured and discharged, the arc extinguishing performance of the atmosphere in the tube is not good, and the spark generated by the discharge will ablate the electrode, thus affecting the service life of the discharge tube
There are also some that fill the discharge tube with flame-retardant gas. Although the electrode ablation has been reduced, it can only prolong the service life of the discharge tube very limited.

Method used

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  • Vacuum discharge tube

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Embodiment Construction

[0020] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0021] Such as figure 1 As shown, the vacuum discharge tube includes a main body 1, which has a closed cavity 1a that is evacuated into a vacuum. The upper and lower parts of the main body 1 are respectively provided with a rod-shaped fixed electrode 2 and an adjustable electrode 3. The fixed electrode 2 and the inner end of the adjustable electrode 3 are inserted into the cavity 1a of the body 1 as the electrode end 4, and the outer ends of the two electrodes are both located outside the body 1 as the terminal 5 for connecting with the circuit to be protected. , electrical appliances to connect. The electrode terminals 4 of the fixed electrode 2 and the adjustable electrode 3 are arranged facing each other and form a dis...

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Abstract

The invention provides a vacuum discharge tube, which belongs to the technical field of power supply and power distribution and solves the problem of short service life of the conventional discharge tube. The vacuum discharge tube comprises a main body with a cavity, wherein a fixed electrode and an adjustable electrode are arranged on the main body, one end of both the fixed electrode and the adjustable electrode can be used an electrode end to be inserted into the cavity of the main body and form a discharge gap, while the other end is used as a terminal positioned outside the main body; and the main body is made of insulating materials and the inside of the cavity of the main body is vacuum. The vacuum discharge tube has the advantages of long service life, wide application range and high current and voltage bearing capacity.

Description

technical field [0001] The invention belongs to the technical field of power supply and distribution, and relates to a vacuum discharge tube. Background technique [0002] The discharge tube is a high-voltage protection component used at the input end of the device. When the voltage at both ends exceeds its protection specification value, a breakdown discharge will occur between its internal electrodes, and the input high voltage will be absorbed by the protection capacitor. When the voltage at both ends is lower than its protection specification value, the insulation state between internal electrodes will be restored. [0003] The electrical characteristics of the discharge path of the open discharge tube mainly depend on the environmental parameters, so the stability of the work cannot be guaranteed. In order to improve the working stability of the discharge tube, most of the current gas discharge tubes use metallized ceramic insulators and electrodes for welding technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J21/02
Inventor 蒋贤华吴微
Owner 蒋贤华
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