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Single Laser Positioning Corona UV Detector

An ultraviolet detector and single laser technology, applied in the direction of testing dielectric strength, etc., can solve the problems of practical research difficulty of corona ultraviolet imager, lack of target positioning system, inability to judge corona discharge of insulators, etc.

Active Publication Date: 2015-08-26
NINGBO LIGHT PUPIL PHOTOELECTRIC SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the immature research on high-sensitivity solar-blind ultraviolet imaging devices in my country, and the high-performance foreign imaging devices are very expensive, our country is facing great difficulties in the practical research of corona ultraviolet imagers.
However, using unit (non-imaging) detection method to detect the intensity of corona ultraviolet radiation is a more suitable technology, the technical difficulty is relatively low, and the development cost of the instrument is much lower than that of the corona ultraviolet imager. However, many unit ultraviolet detection technologies currently Missing targeting system
If the unit detection technology lacks a special positioning system, the consequence is that it is impossible to judge which part of the insulator has corona discharge, or even which insulator has corona discharge.

Method used

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  • Single Laser Positioning Corona UV Detector
  • Single Laser Positioning Corona UV Detector
  • Single Laser Positioning Corona UV Detector

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: single laser positioning corona ultraviolet detector, such as figure 1 As shown, it includes an ultraviolet lens 1, an ultraviolet detector 3, a signal processing circuit 6, a data display 7 and a laser observation mirror 8. The ultraviolet lens 1 and the ultraviolet detector 3 share an optical axis 31, and the ultraviolet detector 3 and the signal processing circuit 6 Electrical connection, the signal processing circuit 6 is electrically connected to the data display 7, the ultraviolet lens 1 is equipped with a laser base 2, a visible light laser 4 is installed on the laser base 2, and the visible light laser 4 is electrically connected to the signal processing circuit 6 through the laser drive circuit 5. Connection, the visible light laser 4 emits a beam 41 close to and parallel to the optical axis 31 of the ultraviolet lens 1, the distance between the beam 41 and the optical axis 31 is h, and the two optical axes are as close as possible if the installat...

Embodiment 2

[0033] Embodiment two: other parts are the same as the embodiment, the difference is as Figure 4 As shown, the ultraviolet lens 1 is a Cassegrain lens, and the ultraviolet detector 3 is installed behind the Cassegrain lens 1. The Cassegrain lens includes a lens barrel 1B, a parabolic primary reflector and a hyperbolic secondary reflector, and the paraboloid The main reflector 15 is positioned at the rear end of the lens barrel, and the parabolic primary reflector 15 and the hyperboloid secondary reflector 16 share an optical axis. within focus. The inner surface of lens barrel 1B has matte threads and is black in color. The laser viewing mirror 8 may not be on the casing, and the laser viewing mirror 8 is formed by sticking a visible light narrowband bandpass filter on the surface of the glasses.

[0034] When detecting the ultraviolet signal, the ultraviolet light signal emitted by the discharge insulator 9 reaches the ultraviolet lens 1 , and the structure of the ultravio...

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Abstract

The invention discloses a single-laser positioning corona ultraviolet detecting instrument which comprises an ultraviolet lens, an ultraviolet detector, a signal processing circuit, a data displayer and a laser observation mirror. The ultraviolet lens is coaxial with the ultraviolet detector which is electrically connected with the signal processing circuit, and the signal processing circuit is electrically connected with the data displayer. A laser base is sleeved on the ultraviolet lens, and is provided with a visible laser which is electrically connected with the signal processing circuit through a laser drive circuit. Outgoing beams of the visible laser are close to and parallel to a ray axis of the ultraviolet lens. The single-laser positioning corona ultraviolet detecting instrument has the advantages of being capable of rapidly finding out the general position, where electricity is discharged, of an insulator, or finding out which insulator discharges, and achieving the purpose of locating the discharge position of the insulator.

Description

technical field [0001] The invention relates to a corona ultraviolet detector, in particular to a single laser positioning corona ultraviolet detector. Background technique [0002] With the rapid development of my country's power grid scale, the problem of partial discharge faults in power equipment has become increasingly prominent. In the early stage of partial discharge fault, it generally manifests as corona discharge. Corona discharge refers to a self-sustained discharge phenomenon caused by partial ionization of surrounding gas (usually air) after the electric field strength near the electrode exceeds a certain value. Corona is a high-voltage pulse discharge, which will be accompanied by the generation of plasma during the discharge process. It will cause chemical reactions in the air, produce ozone and nitrogen oxide and other products, cause insulation corrosion and damage to electrical equipment, and cause serious accidents and power grid paralysis. [0003] The I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
Inventor 吴礼刚
Owner NINGBO LIGHT PUPIL PHOTOELECTRIC SCI & TECH CO LTD