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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  • 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 us

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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[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 led out airtight by the method of the present invention.

[0024] First, an optical fiber lead-out flange 2 is required. The optical fiber lead-out flange 2 has a threaded hole solidified with the mounting flange 4, and is airtight with the mounting flange 4 through a sealing ring 5. The central position of the optical fiber outlet flange 2 and the mounting flange 4 of the GIS cavity 1 is provided with a communicating optical fiber through hole 7.

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

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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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