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Multi-phase flow parameter distributed optical fiber measurement system based on optical carrier microwave interference

A distributed optical fiber, optical carrier microwave technology, applied in the field of advanced sensing and complex flow testing, can solve the problems of non-invasive, high-precision, long-distance distributed measurement flow analysis of two-phase and multi-phase flow parameters, etc. The effect of high signal-to-noise ratio, high flexibility, high signal quality

Pending Publication Date: 2020-12-01
TIANJIN UNIV
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Problems solved by technology

[0005] Based on this, it is necessary to invent a new distributed measurement system to solve the problems of non-invasive, high-precision, long-distance distributed measurement and flow analysis of existing two-phase and multiphase flow parameters

Method used

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  • Multi-phase flow parameter distributed optical fiber measurement system based on optical carrier microwave interference
  • Multi-phase flow parameter distributed optical fiber measurement system based on optical carrier microwave interference

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Embodiment Construction

[0026] The multiphase flow parameter distributed optical fiber measurement system based on light-borne microwave interference of the present invention includes a broadband carrier signal source 1, an optical polarizer 2, an optical polarization controller 3, a broadband frequency tunable microwave source 4, an electro-optic modulator 5, Optical amplifier 6 , optical circulator 7 , transmission fiber 8 , distributed sensing fiber 9 , high-speed photodetector 10 , lock-in amplifier 11 , vector microwave detector 12 , computer 13 , measuring pipeline 14 and multiphase flow 15 . Among them, the broadband carrier signal source 4 can be selected from superluminescent light-emitting diodes, ASE noise sources, physical random code modulation lasers, and wide-spectrum chaotic semiconductor lasers, and the distributed sensing optical fiber 9 is laid and embedded in the inner wall of the multiphase flow pipeline.

[0027]The signal output end of the broadband carrier signal source 1 is co...

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Abstract

The invention relates to a multi-phase flow parameter distributed optical fiber measurement system based on optical carrier microwave interference. The system is characterized in that the the system comprises a broadband carrier signal source (1), an optical polarizer (2), an optical polarization controller (3), a broadband frequency tunable microwave source (4), an electro-optical modulator (5),an optical amplifier (6), an optical circulator (7), a transmission optical fiber (8), a distributed sensing optical fiber (9), a photoelectric detector (10), a lock-in amplifier (11), a vector microwave detector (12), a computer (13), a measuring pipeline (14) and multi-phase flow (15). The distributed sensing optical fiber (9) is laid and embedded in the inner wall of the multi-phase flow pipeline.

Description

technical field [0001] The invention belongs to the field of advanced sensing and complex flow testing, and specifically relates to a multiphase flow parameter distributed optical fiber measurement system based on light-borne microwave interference. Background technique [0002] Multiphase flow exists in chemical industry, water conservancy, meteorology, energy, metallurgy, biology, food processing, aerospace and other industrial production processes, systems and equipment important to the national economy, understand the flow characteristics of multiphase flow and realize the detection of its flow parameters It has important research significance and practical value. The essence of multiphase flow field is continuous, especially for relatively complex multiphase flow structure, in order to express the characteristics of multiphase flow more accurately and study the characteristics of multiphase flow more deeply, it is often necessary to obtain a certain distance or even the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/45G01N21/21G01L11/02G01K11/32
CPCG01N21/45G01N21/21G01L11/025G01K11/32G01N2021/458
Inventor 薛婷李铸平吴斌
Owner TIANJIN UNIV
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