LNG gas cylinder monitoring system and method for vehicles

Abstract

The invention discloses a vehicle-used LNG cylinder monitoring system and method, comprising a gas cylinder containing LNG; a liquid level gauge for measuring the liquid level in the gas cylinder; and a liquid level gauge fixed on the body of the gas cylinder for measuring the gas cylinder an inclination sensor for the inclination angle; a processor for receiving the liquid level information of the liquid level gauge and the inclination information of the inclination sensor; and an air-venting device, when the inclination information shows that it exceeds the warning angle and when the liquid level information shows that it exceeds the set liquid level, The venting device is controlled by a processor to deflate the gas bottle. The invention can monitor and give an early warning to the gas cylinder, and at the same time, can avoid high-temperature explosion and unreasonable alarm from the alarm when the vehicle is bumped and tilted behind.

Description

technical field [0001] The invention relates to a monitoring technology for vehicle LNG (liquefied natural gas) gas cylinders of running vehicles, in particular to a vehicle LNG gas cylinder monitoring system and method. Background technique [0002] The cost of LNG fuel is low, the main component is methane, and there are few harmful components after combustion. It has been widely used as engine fuel in large and heavy vehicles. The compression volume ratio of LNG is 625:1, and there is a huge pressure in the cylinder. In this way, the liquefied natural gas stored in the cylinder is compressed at low temperature and high pressure. When the vehicle carrying the cylinder is dumped in a traffic accident, the ambient temperature It may rise sharply in an instant, and the pressure inside the gas cylinder is abnormal. When the gas cylinder cannot withstand the internal pressure, it is very likely to cause the gas cylinder to explode, causing casualties or traffic paralysis. Preve...

AI Technical Summary

Problems solved by technology

The compression volume ratio of LNG is 625:1, and there is a huge pressure in the cylinder. In this way, the liquefied natural gas stored in the cylinder is compressed at low temperature and high pressure. When the vehicle carrying the cylinder is dumped in a traffic accident, the ambient temperature It may rise sharply in an instant, and the pressure inside the gas cylinder is abnormal. When the gas cylinder cannot withstand the internal pressure, it is very likely to cause the gas cylinder to explode, causing casualties or traffic paralysis. Preventive measures should be taken in time after the vehicle dumps

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