Monitoring system for detecting tank leakage by utilizing distributed optical fiber

Monitoring system for detecting tank leakage by utilizing distributed optical fiber

  • CN 106,644,276 A
  • Filed: 01/11/2017
  • Published: 05/10/2017
  • Est. Priority Date: 01/11/2017
  • Status: Active Application
First Claim
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1. a kind of utilization distribution type fiber-optic detects the monitoring system of tank body leakage, it is characterised in that include:

  • Laser instrument, wavelength-division are multipleWith device, the sensing optical fiber, photoelectric conversion module, signal processing module and the alarm module that are wrapped in outside tank body;

    The laser instrument is connected with the first demultiplexing port of the wavelength division multiplexer, described to sense optical fiber and the wavelength-division multiplexThe multiplexing port connection of device, second demultiplexing port and threeth demultiplexing of the photoelectric conversion module with the wavelength division multiplexerPort connects, and the photoelectric conversion module is connected with the signal processing module, the alarm module and the signal transacting mouldBlock connects;

    The laser instrument is used to produce pulse laser;

    The wavelength division multiplexer is used to isolate stokes light and anti-Stokes in the light returned from the sensing fiber reflectionLight;

    The photoelectric conversion module is used for the stokes light for isolating the wavelength division multiplexer and anti-Stokes light conversionFor the first electric signal and the second electric signal;

    The signal processing module is used for according to first electric signal and second electric signal, is calculated temperature value and lets outThe positional information of leak source;

    If the alarm module detects leakage for signal processing module, reported to the police.

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