Intelligent pressurization device for LNG storage bottle

Abstract

The invention belongs to the technical field of automobile accessories, and provides an intelligent pressurization device for an LNG storage bottle. The intelligent pressurization device comprises the LNG storage bottle, a heating module, a pressure sensor, a displayer and a PLC intelligent control system. The bottom of the LNG storage bottle is provided with the heating module. The heating module is connected with the PLC intelligent control system. The top of the LNG storage bottle is provided with a liquid level meter and a pressure meter. A safety valve is installed on an opening of the LNG storage bottle. One side of the LNG storage bottle is provided with a liquid outlet pipe. The liquid outlet pipe is connected with one end of a gasifier. The other end of the gasifier is connected with the PLC intelligent control system. The PLC intelligent control system is connected with the displayer. The intelligent pressurization device is simple in pressurization loop, convenient to operate, applicable to various environments and high in safety performance.

Description

technical field [0001] The invention relates to a pressurizing device, in particular to an intelligent pressurizing device for an LNG storage bottle, which belongs to the technical field of auto parts. Background technique [0002] LNG vehicle is a new type of clean fuel vehicle developed after CNG vehicle. Compared with CNG vehicle, LNG vehicle has the characteristics of more fuel at one time and longer driving range. LNG vehicle technology can not only be applied to buses, coaches, On large container transport vehicles, it can also be used in taxis. The difference between LNG vehicles and other types of fuel vehicles is that the fuel system is different from the engine that uses LNG fuel, that is, an LNG storage bottle pressurization system is added, which is a This kind of equipment is used for gas supply of LNG automobile engine, which can be applied to various LNG automobiles. [0003] The traditional LNG pressurization system has a complex structure. The LNG storage b...

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Problems solved by technology

[0003] The structure of the traditional LNG pressurization system is complicated. The increase of the pressure in the LNG storage bottle pushes the liquid in the bottle to the stop valve, and then flows to the self-boosting coil after pressure regulation. The self-boosting coil and tube The pipeline absorbs the heat in the air. As the temperature in the pipeline rises, the LNG liquid is vaporized, and then part of the gasified LNG flows back into the LNG storage bottle. The pressure in the storage bottle rises, and the liquid in the LNG storage bottle The liquid passes through the liquid outlet pipe, flows to the overcurrent cut-off device, then passes through the carburetor, flows to the pressure regulator valve through the pipeline, flows to the pressure regulator tank through the pipeline, and supplies air to the engine through the pressure gauge. This kind of booster system has many booster circuits. Inconvenient, it is difficult to adapt to various harsh environments, and it cannot monitor the pressure, liquid level and temperature of the heating element in the gas storage cylinder in real time, and there is a risk of explosion

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