Gas discharge tube, overvoltage protection device and manufacturing method of gas discharge tube
A gas discharge tube and electrode technology, which is applied in the field of discharge tubes, can solve the problems of tube wall resistance drop, short-circuit failure, etc.
Active Publication Date: 2021-03-09
SHENZHEN BENCENT ELECTRONICS CO LTD
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Problems solved by technology
However, the tube wall of the existing integrated gas discharge tube is exposed in the discharge gap. When the discharge tube is struck by lightning, the exposed tube wall is easily sputtered, resulting in a drop in impedance or even a short circuit failure.
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[0053] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0054] figure 1 It is a structural schematic diagram of an existing gas discharge tube. see figure 1, the first electrode 220 and the second electrode 230 are hermetically welded to both ends of the insulating tube 210 to form a cavity structure 240 . When the lightning current passes, due to reasons such as high temperature and gas discharge, the insulating tube 210 of the gas discharge tube is exposed to both sides of the main discharge gap between the first electrode 220 and the second electrode 230, and ther...
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The invention discloses a gas discharge tube, an overvoltage protection device and a method for manufacturing a gas discharge tube. The gas discharge tube comprises an insulation base, at least one first electrode and a second electrode. The first electrode is arranged in a sealing-in area of the insulation base; and each first electrode penetrates the corresponding sealing-in area and the insulation base. The second electrode is arranged at one side, approaching the first electrode, of the insulation base. The insulation base includes a first sealing-in surface. The main body structure of thesecond electrode includes a second sealing-in surface that is arranged at one side of the insulation base and is opposite to the first sealing-in surface. The first sealing-in surface and the secondsealing-in are in a sealing-in relationship; and the main body structure, the first electrode, and the insulation base are sealed to form a cavity structure. Therefore, a problem that the wall of theexisting integrated gas discharge tube is exposed in a discharge gap and thus the impedance drop and even a shot-circuit failure occurs frequently can be solved; and thus the anti-lightning-strike stability of the gas discharge tube is improved and the service life of the gas discharge tube is prolonged.
Description
technical field [0001] The embodiments of the present invention relate to discharge tube technology, and in particular to a gas discharge tube, an overvoltage protection device and a manufacturing method of the gas discharge tube. Background technique [0002] With the increasingly miniaturization of network, communication, PC, industrial control, security and other equipment, these equipment must integrate the various ports of multiple signal lines together. For example, the RJ45 port integrates eight signal lines, the RS485 port integrates two signal lines, and the RJ11 voice port integrates four signal lines. In practical applications, these ports need to be protected against ground for multi-channel signals to prevent damage to subsequent circuits caused by lightning strikes or overvoltages. [0003] The discharge tube is a high-voltage protection component applied to the input end of the device, which can protect the above circuit. However, the tube wall of the existi...
Claims
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IPC IPC(8): H01J17/04H01J17/16H01J17/18H01J9/30H01J9/32
CPCH01J9/30H01J9/32H01J17/04H01J17/16H01J17/186
Inventor 付猛
Owner SHENZHEN BENCENT ELECTRONICS CO LTD