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Optical fiber airtightly leading out method for GIS cavity

A technology of optical fiber and cavity, which is applied in the field of optical fiber airtight extraction for GIS cavity, which can solve the problems of high air pressure and inability to fully meet the requirements, so as to improve reliability, avoid breakage and damage, and solve airtightness difficult effect

Active Publication Date: 2010-05-19
NARI TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

But in GIS system, due to SF 6 The air pressure is higher than the ambient air pressure, and the use of this optical fiber metallization packaging technology can no longer fully meet the requirements

Method used

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  • Optical fiber airtightly leading out method for GIS cavity
  • Optical fiber airtightly leading out method for GIS cavity
  • Optical fiber airtightly leading out method for GIS cavity

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Embodiment Construction

[0023] Such as figure 1 , figure 2 , image 3 As shown, it is a schematic diagram when the optical fiber of the GIS cavity is hermetically led out by the method of the present invention.

[0024] Firstly, an optical fiber lead-out flange 2 is required. There is a threaded hole solidified with the mounting flange 4 on the optical fiber lead-out flange 2 , and the sealing ring 5 is airtight with the mounting flange 4 . An optical fiber through-hole 7 is opened at the center of the optical fiber lead-out flange 2 and the mounting flange 4 of the GIS cavity 1 .

[0025] Secondly, the pigtails of the optical components in the GIS cavity 1 are directly metallized and packaged, so that the internal optical components and the metallized optical fiber 3 are integrated. The metallized package structure includes the metallized optical fiber 3 and the metal tube 6, and the metal tube 6 A nickel tube is used, and the space between the metallized optical fiber 3 and the metal tube 6 is ...

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Abstract

The invention discloses an optical fiber airtightly leading out method for a GIS cavity, and provides a scheme for leading out a tail fiber of an optical element in GIS application. In the scheme, the tail fiber of the optical element in the GIS cavity is subjected to metal packaging, and a metal packaging structure comprises a metal optical fiber, a metal pipe and the like; the metal pipe passes through optical fiber through holes on a mounting flange and an optical fiber leading out flange positioned on the GIS cavity in turn, and the optical fiber through holes are sealed and cured by epoxy resin glue; and the tail fiber leading out parts of the metal optical fiber and the metal pipe are provided with protective devices additionally. In the method, the metal optical fiber packaging technology is applied to the optical element in the GIS cavity of a power system for the first time, the airtightness problem generated when the optical fiber of the GIS cavity is led out is effectively solved, stress applied to the optical fiber is reduced, the balance of the stress of the optical fiber is ensured, the pressive strength and the insulating property of the GIS system are ensured, and the reliability of the GIS system is improved.

Description

technical field [0001] The invention relates to a method for airtightly leading out optical fibers in a GIS cavity by adopting an improved metallization packaging process. Background technique [0002] In recent years, in the application of power system GIS, optical components have been widely adopted by domestic and foreign enterprises and universities due to their excellent insulation properties. In order to ensure the reliability of the GIS system, sulfur hexafluoride (SF 6 ) gas for filling. General, SF 6 The rated operating pressure of the gas is 0.11-0.70MPa, and the annual air leakage rate is less than 1%, which will cause the airtight problem of the optical fiber of the optical element at the outlet end of the GIS cavity. The current sealing technology basically uses glue to directly cure the optical fiber lead-out end. Although this method ensures the airtightness of the GIS cavity, there are SF 6 Air pressure and glue exert too much stress on the optical fiber,...

Claims

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Application Information

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IPC IPC(8): G02B6/44
Inventor 谭金权张志鑫司磊张峰李永兵刘东伟
Owner NARI TECH CO LTD
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