Self-powered oil and gas pipeline monitoring device based on fluid power generation

Abstract

The invention relates to a self-powered oil and gas pipeline monitoring device based on fluid power generation, and belongs to the field of oil and gas pipeline monitoring. A cone frustum is arranged on a pipeline, a spindle with an impeller and a magnetic ring is mounted in a stepped hole of the cone frustum, the magnetic ring is placed in a shaft sleeve mounted at the end of an inner cylinder wall, a pressure sensor and a flow sensor are embedded into a bottom plate of the cone frustum, a circuit board with a signal transmitting module is mounted on the inner side of an outer cylinder wall, a cylinder is welded at the end of the outer cylinder wall, a wedge block and a magnetic block are riveted at two ends of a piezoelectric vibrator with an arc projection, the magnetic block is arranged in a radial guide groove of the shaft sleeve, the wedge block is arranged in a dovetail groove of the cylinder and pressed at the end of the outer cylinder wall through an end cover, and the magnetic block always bears suction from the magnetic ring when the spindle rotates. The self-powered oil and gas pipeline monitoring device has the advantages that a non-contact magnet coupling method excites the pre-bend piezoelectric vibrator to stretch and deform to generate electricity, motion components are sealed in a pipeline, leakage is avoided, the running reliability of a circuit is high, a piezoelectric plate only bears pressure stress and is high in reliability, and the magnetic ring simultaneously excites a plurality of piezoelectric vibrators and is high in power generating capacity and free of noise.

Description

technical field [0001] The invention belongs to the technical field of oil and gas pipeline monitoring, and in particular relates to a self-powered oil and gas pipeline monitoring device based on fluid power generation. Background technique [0002] During the long-term service of oil and gas pipelines, leakage incidents occur frequently due to natural corrosion, force majeure of nature, and especially man-made theft. Frequent pipeline leakage not only causes huge economic losses, but also causes damage to the surrounding natural environment. severe 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 inconvenient places, regular inspections are difficult to find leaks and maintain them in time. Therefore, various types have been proposed for pipeline leakage monitoring or anti-theft systems, such as Chinese patents 200...

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Problems solved by technology

In order to meet the power supply requirements of the oil and gas pipeline monitoring system, various forms of piezoelectric power generation devices have been proposed in recent years to supply power to the monitoring system, such as Chinese patents 201210320120.0 and 201210320105.6, etc., but the above power generation devices all use the bending deformation of the piezoelectric vibrator to generate electricity , the power generation capacity is weak, and it is easy to be damaged due to excessive deformation

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