Automatic control system and method for civil gasification pry of LNG Dewar flask

Abstract

The invention discloses an automatic control system for a civil gasification pry of an LNG Dewar flask. The automatic control system is characterized by comprising a programmable logic controller (10), a controlled device (7), a transmitter (8), a detecting element (9) and a power supply. The power supply provides working power for the devices. The programmable logic controller (10) also comprisesa programmable logic controller extended analog quantity input module (12) and a programmable logic controller extended digital quantity output module (11). The automatic control system for the civilgasification pry of the LNG Dewar flask is high in automatic degree, perfect in security monitoring, convenient to operate and capable of improving the working efficiency of an operator, guaranteeingthe security of the devices and the operator and meanwhile achieving monitoring to an automatic switching system of an air temperature type gasifier and LNG in the Dewar flask.

Description

technical field [0001] The invention relates to a Dewar bottle gasification skid, in particular to an automatic control system and a control method of an LNG Dewar bottle gasification skid for civilian use. Background technique [0002] The current LNG Dewar bottle civil gasification skid control system is generally relatively simple, and the staff needs to monitor and operate the equipment at any time when the equipment is running; when the LNG in the Dewar bottle is used up, it cannot be known immediately, and only after the inspection will know whether it is needed Replacing the bottle group reduces the efficiency of the process equipment; the air-temperature vaporizer generally does not have an automatic switching system, and requires manual operation of the process valves to switch, which also reduces the efficiency of the equipment. At the same time, equipment monitoring and safety monitoring are relatively simple, which has laid hidden dangers for the safe operation o...

AI Technical Summary

Problems solved by technology

[0002] The current LNG Dewar bottle civil gasification skid control system is generally relatively simple, and the staff needs to monitor and operate the equipment at any time when the equipment is running; when the LNG in the Dewar bottle is used up, it cannot be known immediately, and only after the inspection will know whether it is needed Replacing the bottle group reduces the utilization efficiency of the process equipment; the air-temperature vaporizer generally does not have an automatic switching system, and manual operation of the process valve is required to switch, which also reduces the utilization efficiency of the equipment

At the same time, equipment monitoring and safety monitoring are relatively simple, which has laid hidden dangers for the safe operation of LNG gasification stations

Images