Oil-gas pipeline torrential flood disaster monitoring system

Abstract

The invention discloses an oil-gas pipeline torrential flood disaster monitoring system. A metal plate (1) is fixed to a riverway bank; a protective barrel (3) which is placed in the riverway is mounted on the metal plate (1); a fiber bragg grating water level sensor (4) is fixed in the wall of the protective barrel (3); a reference pile (5) with a fiber bragg grating flow rate sensor (6) is mounted at the bottom of the riverway; a fiber bragg grating vibration sensor (8) is mounted on the monitoring section surface of an oil-gas pipeline (7); the water level sensor (4), the flow rate sensor (6) and the fiber bragg grating vibration sensor (8) are led into a fiber terminal box (9) together and are connected with a cable I (10); in a monitoring station, the cable I (10) is connected with an optical switch (11), a demodulator (12) and a lower computer (13) in sequence; the lower computer (13) is connected with an upper computer (16) in an office through a wireless communication module I (14) and a wireless communication module II (15). The oil-gas pipeline torrential flood disaster monitoring system is high in spatial resolution, low in cost, safe and effective.

Description

technical field [0001] The invention is an oil and gas pipeline mountain torrent disaster monitoring system based on optical fiber grating sensing technology, and relates to the technical fields of linear velocity measurement, liquid level measurement, mechanical vibration measurement, general safety devices and pipeline systems. Background technique [0002] Mountain torrent disasters refer to floods, mudslides and landslides caused by rainfall in hilly areas. As global warming has led to extreme weather anomalies in recent years, torrential rains that have not been seen in decades or even in a century have occurred from time to time. There are many small and medium-sized rivers in my country, with drainage areas ranging from 100 to 1,000 km 2 There are more than 50,000 rivers in China; at the same time, my country is located in the East Asian monsoon region, with frequent rainstorms in hilly areas, vertical and horizontal gullies, complex topographic and geological condit...

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Problems solved by technology

[0018] Due to these advantages, in the field of geotechnical engineering, fiber grating sensors are easy to embed in rock and soil for high-resolution and wide-range measurement of internal strain and temperature. The technical advantages are very obvious, especially in the ability to obtain long-term, Reliable rock and soil deformation data, there is no report on the joint monitoring of vortex-induced vibration frequency of pipelines under the impact of floods and torrents in mountainous valleys with fiber grating sensing technology

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