A Piezoelectric Energy Harvester Used in Pipeline Airflow Detection System

Abstract

The invention relates to a piezoelectric energy harvester used in a pipeline airflow detection system, which belongs to the technical field of new energy and pipeline monitoring. The inner wall of the pipe is equipped with a shell through the radial plate, the seat plate of the bracket is installed at the end of the side wall of the shell, the lug plates at the upper and lower ends of the same side of the seat plate are provided with inclined mounting surfaces, and the bottom plate of the half shaft is installed on the The end of the lug plate of the bracket; the left and right ends of the cam body of the exciter are respectively provided with guide pins and guide holes, and there are multiple cams on the upper and lower sides. The cam surface is composed of bottom, inclined and top surfaces connected in sequence; The guide hole is set on the half shaft, the guide pin protrudes through the seat plate of the bracket, and the end of the guide pin is equipped with a blunt body; There are support springs and buffer springs for crimping; one end of the piezoelectric vibrator is installed on the mounting surface of the bracket, and the top block installed on the free end of the piezoelectric vibrator leans against the cam surface. When the exciter is at its vibration center point, the top block and the cam slope midpoint contact.

Description

technical field [0001] The invention belongs to the technical field of new energy and oil and gas pipeline monitoring systems, and in particular relates to a piezoelectric energy harvester used in a pipeline airflow detection system. Background technique [0002] During the operation of oil and gas pipelines, oil and gas pipeline leakage incidents occur frequently due to natural corrosion, force majeure of nature, especially man-made theft, which not only caused huge economic losses, but also caused serious pollution to the surrounding natural environment. In the past, it was maintained by manual inspection methods, but because the pipeline laying distance is long, and it is often in an inaccessible or inconvenient place, it is difficult to detect leakage in time and repair it in time, so people have proposed various types of pipeline leakage monitoring or anti-theft systems. , some technologies are relatively mature; but the power supply problem of the oil and gas pipeline ...

AI Technical Summary

Problems solved by technology

[0002] During the operation of oil and gas pipelines, due to natural corrosion, natural force majeure, especially man-made theft, oil and gas pipeline leakage incidents occur from time to time, which not only caused huge economic losses, but also caused serious pollution to the surrounding natural environment.

In the past, it was maintained by manual inspection methods, but because the pipeline laying distance is long, and it is often in an inaccessible or inconvenient place, it is difficult to detect leakage in time and repair it in time, so people have proposed various types of pipeline leakage monitoring or anti-theft systems. , some technologies are relatively mature; but the power supply problem of the oil and gas pipeline monitoring system has not been well resolved: the cost of laying cables is high and it is easy to be cut off by criminals, which will affect the normal operation of the monitoring system. Frequent replacement, once the battery is low and not replaced in time, the remote transmission of monitoring information cannot be completed

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