Pipeline system vibration distributed in-situ test method based on fiber gratings

A technology of fiber grating and in-situ testing, which is applied to measuring devices, measuring heat, and thermometers with physical/chemical changes, etc., can solve the problems of strengthening pipeline fluid noise, great harm, resonance, etc., and achieve distributed measurement, Effects measured in real time

Inactive Publication Date: 2016-11-16
DALIAN UNIV OF TECH
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Problems solved by technology

During the transmission of vibration, air noise will be radiated to the surrounding environment, and at the same time, the fluid noise inside the pipeline will be strengthened. When the frequency of vibration coincides with the natural frequency of the pipeline system, resonance will occur, which is more harmful

Method used

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  • Pipeline system vibration distributed in-situ test method based on fiber gratings
  • Pipeline system vibration distributed in-situ test method based on fiber gratings

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0019] A distributed in-situ test method for pipeline system vibration based on fiber gratings. The test device used in this method includes a hydraulic station 1, a hydraulic pipeline to be tested 2, a fiber grating sensor 3, an electromagnetic vibration table 4, a signal acquisition controller 5 and an industrial control system. Machine 6;

[0020] Working process: the whole test device is provided by the hydraulic station 1 with the pulsation excitation of the tested hydraulic pipeline 2 system, the hydraulic oil passes through the te...

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Abstract

The invention relates to the technical field of fiber grating measurement, belongs to the technical field of hydraulic pipeline system multi-physics field testing, and particularly provides a pipeline system vibration distributed in-situ test method based on fiber gratings. A test device used by the method comprises a hydraulic station, a tested hydraulic pipeline, a fiber grating sensor, an electromagnetic vibration table, a signal acquisition controller and an industrial control computer. In-situ testing is performed on the vibration state of the hydraulic pipeline through the fiber grating sensor so that the vibration state of the hydraulic pipeline can be effectively reflected, distributed measurement can be realized, and real-time measurement can be simultaneously performed on multiple position points and multiple physical quantities.

Description

technical field [0001] The invention relates to the technical field of optical fiber grating measurement, belongs to the technical field of multi-physics field testing of hydraulic pipeline systems, and in particular relates to a distributed in-situ test method for vibration of pipeline systems based on optical fiber gratings. Background technique [0002] There are more and more applications of fiber grating sensors in the field of structural testing, and structural monitoring in civil engineering is the most active field of fiber grating sensor applications. Fiber Bragg grating sensors can be pasted on the surface of existing structures or embedded in structures to perform real-time measurements on structures and monitor the formation and growth of structural defects. In addition, multiple fiber grating sensors can be connected in series to form a network for distributed detection of the structure, and the sensing signal can be transmitted over a long distance to the centr...

Claims

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Application Information

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IPC IPC(8): G01H9/00G01K11/32G01D21/02G01K11/3206
CPCG01D21/02G01H9/004G01K11/32
Inventor 韩清凯翟敬宇高培鑫闫洋洋魏代同宋旭圆
Owner DALIAN UNIV OF TECH
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