Remote monitoring system for liquid ammonia tank

Abstract

The invention provides a remote monitoring system for liquid ammonia tank, which has a strong anti-interference capability, practicability and reliability. With the system, processing ability to handle accidents can be increased; manual labor can be saved; and safe and high efficient running of a factory can be ensured. The invention comprises a host computer, a PLC, a pressure sensor, a liquid level sensor, a liquid ammonia concentration sensor, a sound-and-light alarm, an exhaust fan, a solenoid valve and a power supply. The host machine adopts Kingview software to control the liquid ammonia tank remote monitoring picture, the alarm picture, the data reports, and the trend curve graph, and the text message configuring picture. The host machine is provided with a double serial port card. The double serial port card is connected with a text message module; the PLC is connected with the double serial port card of the host machine; the PLC is connected with a smart isolation transmitter. The signal input end of the PLC is connected respectively with the sound-and-light alarm, the exhaust fan, the solenoid valve and the power supply. The signal input end of the smart isolation transmitter is connected respectively with the pressure sensor, the liquid level sensor and the liquid ammonia concentration sensor.

Description

technical field [0001] The invention belongs to the technical field of toxic, flammable and irritating gas storage, and in particular relates to a remote monitoring system for liquid ammonia storage tanks. Background technique [0002] Liquid ammonia is a colorless gas with a pungent smell. It is flammable and easily soluble in water. Ammonia with a concentration of more than 10% falls within the scope of the drug law and is regarded as a secondary drug. Once a leakage accident occurs, it will have a great impact on the human body and surrounding facilities. The light one will cause personal injury and equipment damage, and the severe one will cause casualties and production shutdown accidents. The consequences are disastrous. The liquid ammonia storage tank is a Class III pressure vessel, and the large-capacity liquid ammonia storage tank should be listed as a major hazard for safety management, which is the key task of factory safety supervision and the top priority in pro...

AI Technical Summary

Problems solved by technology

Once a leakage accident occurs, it will have a great impact on the human body and surrounding facilities. The light one will cause personal injury and equipment damage, and the severe one will cause casualties and production shutdown accidents. The consequences are unimaginable.

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