Installation structure of optical fiber sensor used for contact temperature detection of power switch cabinet

Abstract

The invention relates to an installation structure of an optical fiber sensor used for the contact temperature detection of a power switch cabinet, wherein an optical fiber sensing and fixing device is arranged on the sensor; a contact of a breaker is connected with an optical fiber with a sheath; the optical fiber with the sheath is connected with an optical fiber sensing temperature-measuring device; the optical fiber sensing temperature-measuring device is installed on a quincunx moving contact of the switch cabinet; a heat-shrinkable sleeve is arranged between an arm and an upright of the breaker; the upright of the breaker is connected with one endpoint of a terminal distributor; and the other endpoint of the terminal distributor is connected with an industrial optical fiber connector. The invention has the advantages that the installation structure is used for the optical fiber sensing temperature-measuring device, so that the installation structure has good explosion and lightning prevention and anti-electromagnetic interference capacity and can meet the insulation requirement of a power system; the installation structure has stable and reliable performance; the sensing unit has small volume and light weight; and the installation structure has the characteristics of corrosion resistance and high voltage resistance, can be used for transmitting signals in a passive way at a long distance and can be suitable for measuring the temperature in the power system and the petrochemical industry system. In addition, the installation structure can be used for monitoring the temperature of hundreds of points to be measured at real time.

Description

technical field [0001] The invention relates to an installation structure of an optical fiber sensor used for detecting the temperature of a contact of a power switch cabinet, and belongs to the technical field of optical fiber sensing and monitoring. Background technique [0002] Optical fiber sensing temperature sensing real-time monitoring technology is an effective detection method for temperature, pressure and displacement. The detection principle is to measure the variation of the internal wavelength reflection of the optical fiber with the ambient temperature, pressure and displacement, etc., to detect the external changes felt by the optical fiber sensor. Among them, temperature, pressure, displacement and flow can be measured. At present, there are wireless temperature monitoring and infrared temperature monitoring in the market. Their shortcomings are vulnerable to electromagnetic interference and require power supply. Such as charged thermocouples and direct infr...

AI Technical Summary

Problems solved by technology

At present, there are wireless temperature monitoring and infrared temperature monitoring in the market. Their shortcomings are susceptible to electromagnetic interference and require power supply.

Such as charged thermocouples and direct infrared radiation cannot be used on high-voltage switch cabinets.

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