Built-in cable joint temperature fiber on-line monitoring sensor

A technology for monitoring sensors and cable joints, applied to thermometers, thermometers with physical/chemical changes, instruments, etc., can solve problems such as large errors and large environmental impacts, and achieve improved accuracy and precision, low cost, and easy installation. simple effect

Active Publication Date: 2016-11-16
BEIJING BODA HUADIAN MEASUREMENT & CONTROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings of large errors and large environmental impacts in the indirect measurement of the existing cable joint temperature, the present invention provides a built-in cable joint temperature optical fiber online monitoring sensor with low cost, simple installation process, and direct real-time measurement of contact temperature.

Method used

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  • Built-in cable joint temperature fiber on-line monitoring sensor
  • Built-in cable joint temperature fiber on-line monitoring sensor

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 As shown, this embodiment includes: fluorescent materials, insulating ceramic tubes with threaded fasteners, fully transparent Teflon sleeves, quartz rods or quartz optical fibers, plastic ferrules, nuts, plastic optical fiber cores, plastic optical fibers, photoelectric processing modules, 485 output, metal nut for cable gland, cast epoxy and built-in temperature sensing head.

[0018] The fluorescent material 1 is pasted on the front end of the quartz rod or the quartz optical fiber 4, which is close to the metal nut of the cable joint of the measured object; the outer part of the quartz rod or the quartz optical fiber 4 is a fully transparent Teflon sleeve 3 and an insulating ceramic with a threaded buckle. Tube 2. The quartz rod or quartz optical fiber 4 and the fully transparent Teflon sleeve 3 are ironed; the ful...

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Abstract

The invention discloses a built-in cable joint temperature fiber on-line monitoring sensor, and the sensor comprises a quartz rod or a quartz optical fiber, a fluorescent material which is pasted at the front end of the quartz rod or the quartz optical fiber and is closely attached to a tested cable joint metal nut, a teflon casing pipe and an insulating ceramic tube which are disposed at the exterior of the quartz rod or the quartz optical fiber from the inside to the outside, a plastic optical fiber with a plastic clamping sleeve, an optical processing module connected with the other end of the plastic optical fiber, and a 485 output end disposed at the other end of the optical processing module, wherein the plastic optical fiber with the plastic clamping sleeve is closely attached to an end face of the quartz rod or the quartz optical fiber through a nut. The exterior of the insulating ceramic tube and a metal nut is provided with an epoxy resin layer which is formed through high-temperature and high-pressure casting. The sensor is low in cost and is simple in installation process. When the sensor is in use, the fluorescent material can directly measure the contact temperature, and can improve the temperature measurement accuracy and precision of a cable joint.

Description

technical field [0001] The invention relates to a built-in cable joint temperature optical fiber online monitoring sensor, which can be widely used for efficient temperature online monitoring in the fields of cable joint temperature measurement, dry-type transformer temperature measurement, power switch cabinet temperature measurement and the like. Background technique [0002] The cable joint is one of the most critical nodes in the power transmission network, and the tightness of its contact is of great significance to the reliable operation of the entire power grid. When the cable joint is virtual connected, part of the electric energy is converted into heat energy, and even an arc may be generated, thereby causing damage to the cable joint. These accidents have caused huge economic losses to industrial production. Therefore, it is very important to monitor the temperature of the cable joint in real time. However, due to the high electromagnetic environment of high-volta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32
CPCG01K11/32
Inventor 王燕海董中洲张秋梅李思勉许晓润李占军李继光
Owner BEIJING BODA HUADIAN MEASUREMENT & CONTROL TECH
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