Online optical fiber laser oxygen concentration monitoring and early warning system for inner floating roof light oil product tank

Abstract

The invention provides an online optical fiber laser oxygen concentration monitoring and early warning system for an inner floating roof light oil product tank, and relates to the field of gas concentration detecting. The concentration of oxygen in the oil product tank can be accurately detected effectively, a feedback loop is used for driving inert gas to reduce the concentration of the oxygen in the tank through dilution, and therefore safety of the oil product tank is guaranteed. The online optical fiber laser oxygen concentration monitoring and early warning system comprises an oxygen concentration sensor, an oxygen concentration analyzer, an oxygen-oil gas concentration explosion limit early warning system and an inert gas diluting system. The oxygen concentration sensor is arranged on the side face in an arch apex of the inner floating roof light oil product tank and connected with the oxygen concentration analyzer through a wire jumper. The oxygen-oil gas concentration explosion limit early warning system is connected with the oxygen concentration analyzer and the inert gas diluting system, and the inert gas diluting system communicates with the interior of the light oil product tank through a pipeline.

Description

technical field [0001] The invention relates to the field of gas concentration detection, in particular to an optical fiber laser oxygen concentration online monitoring and early warning system for an inner floating roof light oil tank. Background technique [0002] With the rapid growth of my country's economy, petroleum and petroleum products have been widely used in production and life, and the total reserves of petroleum storage tank farms are increasing day by day. Top tanks are used on a large scale. The inner floating roof tank is a new type of storage tank combined with a vault tank and a floating roof tank, which can effectively prevent the intrusion of wind, sand, rain and snow, and reduce evaporation loss by 85% to 96%, ensuring the quality of oil products and reducing air pollution . Although the internal floating roof tank combines the advantages of the vaulted roof tank and the floating roof tank, its limitations lie in the high construction requirements, inco...

AI Technical Summary

Problems solved by technology

Although the internal floating roof tank combines the advantages of the vaulted roof tank and the floating roof tank, its limitations lie in the high construction requirements, inconvenient maintenance, and the difficulty of large-scale storage tanks. Most internal floating roof tanks do not exceed 10,000 cubic meters ; On the other hand, the floating plate in the inner floating roof tank moves up and down for a long time, resulting in a loose sealing ring, oil and gas will accumulate between the floating plate floating roof and the vault, and it is easy to reach the explosion limit, and the inner floating roof tank is sealed, Oil and gas will accumulate for a long time and will not diffuse into the outside atmosphere

No matter how high the concentration of oil and gas is, if there is no combustible oxygen, the conditions for explosion cannot be formed. Therefore, only relying on the detection / monitoring of oil and gas concentration to provide an early warning of the explosion of the inner floating roof tank cannot fully meet the requirements for monitoring the explosion of the inner floating roof tank.

Oxygen concentration monitoring / detection has been reported in medical treatment and mines, but the method of monitoring and early warning of oxygen concentration between the floating roof and the vault of the inner floating roof tank using fiber laser online monitoring technology has not yet been reported

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