Fiber grating composite insulator and manufacturing method thereof

Abstract

The invention relates to a fiber grating composite insulator comprising a core rod, a high-voltage end fitting and a low-voltage end fitting, wherein the high-voltage end fitting and the low-voltage end fitting are arranged on both ends of the core rod; the center of the core rod is provided with a fiber; the fiber comprises a grating coverage area and a tail fiber, wherein a grating coverage area is internally and uniformly provided with 3-20 gratings, and the length of the tail fiber is longer than or equal to 500mm; and the fiber is sequentially sleeved with a white sleeve, a metal hose and a hollow steel tube from inside to outside. A manufacturing method of the fiber grating composite insulator comprises the following steps of: firstly manufacturing the fiber; then packaging the fiber; then drawing the packaged fiber and soaked glass fibers out of a mould together to manufacture the core rod; then sawing the hollow steel tube to strip to expose the tail fiber; and then sequentially carrying out fitting pre-crimping, graded injection molding and secondary crimping to obtain the needed fiber grating composite insulator. The invention can not only realize the on-line monitoring of the mechanical property and the electric property of the fiber grating composite insulator and have difficult environmental corrosion and better mechanical property, but also accurately transmit the optimal sensing signals, save the production cost and enhance the manufacturing efficiency.

Description

technical field [0001] The invention relates to a composite insulator, in particular to an optical fiber grating composite insulator and a manufacturing method thereof, and is particularly applicable to an optical fiber grating composite insulator above 500KV and its manufacture. Background technique [0002] The performance of high-voltage insulators, especially the mechanical and insulating properties, has a very important impact on the safe operation of the power system, so the mechanical and insulating properties of insulators must be monitored regularly. The traditional monitoring method of composite insulators is based on the requirements of DL / T864-2004, inspections are carried out every 1-2 months, and insulators are taken from the tower and sent to the laboratory for performance inspection every 3-5 years. However, this sampling inspection method has disadvantages such as high work intensity, high risk of climbing poles, and long time consumption. Not only the whole...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and problems existing in the prior art that affect the transmission of light sensing signals, be susceptible to environmental corrosion, low mechanical properties, and low manufacturing efficiency, and provide a method that accurately transmits light sensing signals, is not easy to Fiber Bragg Grating Composite Insulator Affected by Environmental Corrosion, Good Mechanical Properties, and High Manufacturing Efficiency and Manufacturing Method

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