Conduit flow energy harvester

Abstract

The present invention relates to a conduit flow energy harvester and belongs to the field of fluid power generation. A framework bottom plate, provided with inner and outer anchorage plates, is installed on the cross beam of a pipeline. The left end of a rocking arm of an exciter is provided with a rocking arm anchorage plate, and the right end of the rocking arm of the exciter is provided with a blunt body. The front and back sides of the exciter are provided with cams. The shaft hole of the rocking arm is sleeved on a rotating shaft. The rotating shaft is fixed onto the outer anchorage plate. The inner anchorage plate and the rocking arm anchorage plate are provided with pin shafts. The two ends of a spring are connected with the pin shafts. The upper and lower sides of the framework bottom plate are provided with energy transducers and the substrates of the energy transducers are arranged closer to the framework bottom plate. The free ends of the energy transducers are pressed against the cams. The contour curve of each cam is composed of two sections of arc profiles concentric with the shaft hole. In the contour curve of each cam, the distance between each arc profile and the center of the shaft hole is the shortest. Before the installation of energy transducers, the energy transducers are of a flat and straight structure. After the installation of energy transducers, the energy transducers are of a bent structure. Meanwhile, the free ends of the energy transducers and the vertex of the profile of each cam are in contact with each other. In the contour curve of each cam, the vertex of the profile is the largest in distance from the center of the shaft hole. The deformation amount of the energy transducers is the largest when the energy transducers are in contact with the vertex of the profile.

Description

technical field [0001] The invention belongs to the technical field of pipeline fluid power generation and pipeline monitoring, and in particular relates to a pipeline flow energy harvester. Background technique [0002] Due to corrosion, natural force majeure and human theft, long-distance pipelines for long-distance fluids such as oil and natural gas often leak during use. Frequent pipeline leakage not only causes huge economic losses, but also affects the surrounding natural environment. caused serious pollution. In the past, regular manual inspections were often used for maintenance. However, due to the long laying distance of oil and gas pipelines and the fact that they are often located in inaccessible or inaccessible places, it is difficult to detect leaks and maintain them in time by manual inspections. Therefore, various types of pipeline leakage monitoring and anti-theft systems have been proposed. Although some of the pipeline fluid leakage and anti-theft monito...

AI Technical Summary

Problems solved by technology

Although some of the pipeline fluid leakage and anti-theft monitoring and alarm methods proposed are relatively mature at the technical level, the application of the anti-theft monitoring system for long-distance pipelines in my country is still in its infancy and has not yet been widely used. One of the main reasons is The power supply problem of the monitoring system has not been well solved: ①The 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; ②The battery power supply has a limited service time and needs to be replaced frequently. The remote transmission of monitoring information cannot be completed even when it is replaced in time

In recent years, in order to meet the self-power supply requirements of related wireless sensor monitoring systems, people have proposed various forms of turbine-type micro-fluid power generation devices. The biggest problem is that the structure is complex and the volume is relatively large, which is not suitable for pipelines with small diameters. In some occasions, some structures of power generation devices still have electromagnetic interference and other phenomena, and their popularization and application are restricted to a certain extent.

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