Spherical tank health monitoring system based on optical fiber acoustic emission technique

Abstract

The invention provides a spherical tank health monitoring system based on an optical fiber acoustic emission technique. The system comprises a signal conditioning subsystem, an electro-optical conversion subsystem, a photovoltaic conversion subsystem, a computer and more than one acoustic emission sensors, wherein the more than one acoustic emission sensors are fixedly arranged at a key part of the surface of a spherical tank to be monitored; the output ends of the acoustic emission sensors are electrically connected with the input end of the signal conditioning subsystem; the output end of the signal conditioning subsystem is electrically connected with the input end of the electro-optical conversion subsystem; the output end of the electro-optical conversion subsystem is electrically connected with the input end of the photovoltaic conversion subsystem; the output end of the photovoltaic conversion subsystem is electrically connected with the input end of the photovoltaic conversion subsystem by virtue of an optical fiber; and the output end of the photovoltaic conversion subsystem is electrically connected with the input end of the computer; and therefore, the health condition of the spherical tank is monitored in real time; and moreover, the system also has the advantages of long transmission distance, good anti-interference performance and the like and can be used for effectively monitoring the health condition of the spherical tank for a long time.

Description

technical field [0001] The invention belongs to the technical field of spherical tank health monitoring, and in particular relates to a spherical tank health monitoring system based on optical fiber acoustic emission technology. Background technique [0002] Spherical tank is a kind of steel container equipment, which is mainly used for storage and transportation of liquid or gaseous materials in petroleum refining industry and petrochemical industry. [0003] Due to the influence of the internal pressure and the external environment during the use of the spherical tank, some dangerous parts will gradually appear, for example, the risk of leakage of the spherical tank will increase due to crack expansion, plastic deformation or phase transition, so, to ensure The safe use of spherical tanks often requires health testing of spherical tanks. [0004] Existing spherical tank health detection methods generally include the following two categories: (1) manual direct visual inspe...

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Problems solved by technology

The main disadvantages of this method are: poor real-time performance, unable

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