Vertical storage tank leakage monitoring system with dual-layer tank bottom plate structure

Abstract

The invention relates to a vertical storage tank leakage monitoring system with a dual-layer tank bottom plate structure. The provided system aims at realizing real-time monitoring of the leakage situation of a tank bottom plate of a vertical storage tank. The technical scheme is that the vertical storage tank leakage monitoring system with the dual-layer tank bottom plate structure comprises the vertical storage tank which consists of a tank body and a tank body, and a leakage monitoring system which is used for monitoring leaked gas. The vertical storage tank leakage monitoring system with the dual-layer tank bottom plate structure is characterized in that the tank bottom comprises an upper layer bottom plate, a lower layer bottom plate and a closed cavity which is arranged between the upper layer bottom plate and the lower layer bottom plate, the leakage monitoring system comprises a circulating pipeline which is provided with a circulating pump and is connected with the cavity, an inert gas source which is communicated with the circulating pipeline, and a PLC (programmable logic controller) control center which is respectively connected with an infrared gas transmitter, a pressure transmitter, a temperature and humidity transmitter and the circulating pump through data lines.

Description

technical field [0001] The invention relates to a vertical storage tank leakage monitoring system configured with a double-layer tank bottom plate structure. Background technique [0002] Vertical storage tank is an important equipment for storage, separation, export and transfer of crude oil, intermediate oil, refined oil, chemical raw materials and petrochemical products. Due to the long-term operation under the conditions of natural environment and liquid level changes, the vertical storage tanks inevitably have defects such as aging and corrosion; however, a large number of storage tanks in my country are currently in the stage of equipment aging and serious corrosion. "Drip, leak" accidents happen from time to time. Most of the media stored in the storage tank are flammable, explosive, volatile and even toxic. Once leaked, it is easy to cause fire and explosion, causing serious economic losses and environmental pollution. The bottom plate of the tank is located at the ...

AI Technical Summary

Problems solved by technology

For a long time, the defects of the tank bottom have been detected by regular off-line methods of opening the tank, including magnetic flux leakage, eddy current, ultrasonic, magnetic particle, etc. The detection needs to stop production, emptying, cleaning, rust removal and other processes, which is time-consuming and laborious, and the shutdown causes huge economic losses

Moreover, these methods are all post-event detection methods, which can only be used for periodic detection, and cannot detect leaks that are occurring during operation, which is crucial to the safe operation of storage tanks

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