Multichannel long optical path air chamber applied to inside of SF6 equipment

Abstract

The invention relates to the technical field of an optical fiber detection device, in particular to a multichannel long optical path air chamber applied to the inside of SF6 equipment. The multichannel long optical path air chamber comprises a casing and an optical detection device, wherein an annular fixing disc is arranged in the casing; the optical detection device comprises N laser transceivers; the N is an integer being greater than 2; the N laser transceivers are annularly arranged on the fixing disc at intervals; and the N laser transceivers are sequentially in end-to-end connection through an optical fiber. The multichannel long optical path air chamber has the advantages that the structure is reasonable; the optical fiber is connected in from a guide-in hole; the laser enters an excitation collimator through the optical fiber; the laser is converted into parallel light by the excitation collimator, and the parallel light is received by a receiving collimator arranged in the opposite side; the receiving excitation collimator receives optical signals and transmits the optical signals onto an adjacent excitation collimator through the optical fiber; after the roundtripping for many times, the optical signals are guided out through the optical fiber on a guide-out hole; the detection optical path is changed into the integral multiples of the diameter of the fixing disc; the detection optical path and the detection precision are greatly improved; and the fixing disc can be carried on a flange with any diameter, and can be applied to equipment of any specifications.

Description

technical field [0001] The invention relates to the technical field of optical fiber detection devices, in particular to a multi-channel long optical path gas chamber applied inside SF6 equipment. Background technique [0002] In SF6 power equipment, the detection of decomposition products can predict the health of the equipment, find hidden dangers in advance and intervene, improve the continuous and stable operation time of the equipment, and improve the service life and efficiency of the equipment. At present, the detection of SF6 gas is mainly based on offline detection. The main problem of offline detection is that the SF6 gas needs to be sampled through the gas filling port for detection. During this process, the internal gas decomposition products may have undergone chemical reactions or be absorbed by the internal adsorbent. Adsorption leads to inaccurate detection. For this reason, through the modification of the flange in the power equipment and optical detection,...

AI Technical Summary

Problems solved by technology

However, there is no standard for flanges in power equipment, and the size and specifications vary greatly, resulting in insufficient detection accuracy of the detection device, and it is difficult to meet the detection and monitoring needs of equipment at all levels

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