JPS59168171U

JPS59168171U - Discharge detection device

Info

Publication number: JPS59168171U
Application number: JP6323983U
Authority: JP
Inventors: 武藤　勝俊
Original assignee: 三菱電機株式会社
Priority date: 1983-04-26
Filing date: 1983-04-26
Publication date: 1984-11-10

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の放電検出装置を示す要部側面図、第２図
は各種光ファイバーの波長に対する伝搬損失の関係を示
す特性図、第３図は第１図の装置を改良した従来の放電
検出装置を示す要部側面図、第４図は第３図における長
尺受光部材より光検出手段へ放電光が導かれる様子を拡
大して示す説明図、第５図ａはこの考案の一実施例に係
わる長尺受光部材を示す断面図、ｂはその屈折率の変化
を示す特性図である。図において、１は放電監視空間、３は電気導電体、４は
光電送路である光ファイバー、４ａは受光端、５は光検
出手段、６．７は放電、９は長尺受光部材、９ａは長尺
受光部材９の端面である。１４は螢光物質１５を被覆し、螢光物質１５より、　低
屈折率を有する物質であり、この物質１４と螢光物質１
５とで長尺受光部材９を構成している。なお、図中同一符号は同一または相当部分を示すものと
する。Figure 1 is a side view of the main parts of a conventional discharge detection device, Figure 2 is a characteristic diagram showing the relationship between propagation loss and wavelength of various optical fibers, and Figure 3 is a conventional discharge detection device that is an improved version of the device in Figure 1. FIG. 4 is an enlarged explanatory diagram showing how the discharge light is guided from the elongated light-receiving member to the light detection means in FIG. 3, and FIG. 5a is an embodiment of the device. FIG. 3B is a cross-sectional view showing the elongated light-receiving member related to FIG. In the figure, 1 is a discharge monitoring space, 3 is an electrical conductor, 4 is an optical fiber serving as a photoelectric transmission path, 4a is a light receiving end, 5 is a photodetecting means, 6.7 is a discharge, 9 is a long light receiving member, and 9a is a long light receiving member. This is an end face of the elongated light receiving member 9. 14 is a material that coats the fluorescent material 15 and has a lower refractive index than the fluorescent material 15, and this material 14 and the fluorescent material 1
5 constitutes a long light receiving member 9. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A long light-receiving member arranged to receive light generated by discharge from the peripheral surface, an optical transmission path that guides the light radiated from the end surface of this long light-receiving member, and a light that detects the light from this optical transmission path. In the discharge detection device equipped with a detection means, the elongated light-receiving member is made by coating a fluorescent substance that converts short wavelength light into long wavelength light with a substance having a lower refractive index than the fluorescent substance. Characteristic discharge detection device.