Floating tray liquid level calculation and measurement method for floating roof storage tank, system and application

Abstract

The invention discloses a floating tray liquid level calculation and measurement method for a floating roof storage tank, a system and an application. The method includes the following steps: in a normal working range of an optical fiber liquid level sensor, an upper optical fiber grating located at the corresponding upper part of a cantilever beam is always subjected to tensile stress in the normal working range, a lower optical fiber grating located at the corresponding lower part of the cantilever beam is always subjected to compressive stress, and the stress of the upper optical fiber grating the stress of the lower optical fiber grating are the largest when the optical fiber liquid level sensor is not loaded; when a liquid level rises and is in contact with a floating drum, the buoyancy of the floating drum changes, the stress of a cantilever beam accordingly changes, the deflection strain of the upper optical fiber grating and the lower optical fiber grating accordingly changes, and a floating tray surface liquid level is obtained according to the changes of the upper optical fiber grating and the lower optical fiber grating; and if the floating tray surface liquid level exceeds a preset value, the optical fiber liquid level sensor is combined with external equipment to perform an alarm. The floating tray liquid level calculation and measurement method for a floating roof storage tank, the system and the application monitor water accumulation on the surface of the floating tray and improve the precision of the monitoring of the water accumulation on the surface of the floating tray.

Description

technical field [0001] The invention relates to a method, system and application for calculating and measuring the liquid level of a floating plate for a floating roof storage tank. Background technique [0002] In recent years, with the sustained and rapid development of the economy, my country's demand for oil energy is increasing. In order to ensure the safety of domestic oil energy, the government and oil companies have successively established national strategic oil reserves and commercial reserves along the coast. Large-scale crude oil storage The number of zones and the total amount of oil reserves continued to rise. However, at present, most of the monitoring work of oil depots mainly relies on manual inspection, and the information feedback has a certain lag. According to the analysis of 242 storage tank accidents in the past, more than 30% of the accidents were caused by human factors. Therefore, the manual tank inspection method commonly used in oil depot tank fa...

AI Technical Summary

Problems solved by technology

However, the accumulation of water on the surface of the floating plate may easily cause the sinking of the floating plate, the chucking accident, and even cause a fire, causing the oil tank to explode

At present, the method of calculating and measuring the liquid level of the floating plate to monitor the water on the surface of the floating plate of the floating roof storage tank has not been reported yet.

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