Control system for transforming LNG (Liquefied Natural Gas) into CNG (Compressed Natural Gas) and control method thereof

Abstract

The invention discloses a control system for transforming LNG (Liquefied Natural Gas) into CNG (Compressed Natural Gas) and a control method thereof. The control system comprises a low-temperature pump used for introducing LNG and a control center, wherein the low-temperature pump is in communication connection with the control center and is communicated with a gasifier, the gasifier is communicated with a plurality of CNG substations, each CNG substation is provided with a plurality of CNG dispensers, and the gasifier and the CNG substations are in communication connection with the control center. The invention also discloses a control method for controlling the plurality of CNG substations by adopting the control system. By using a structure mode of the low-temperature pump and the gasifier, the working mode of one or more gas paths and one or more CNG dispensing guns is realized, a working mechanism of a compressor and a hydraulic pump is eliminated, the mechanical abrasion of a gas station in a running process is reduced, and the running safety and stability of the gas station are improved.

Description

technical field [0001] The invention relates to the field of natural gas, in particular to a control system for converting LNG into CNG and a control method thereof. Background technique [0002] One of the chief culprits of smog is the emission of automobile exhaust particulate matter, and the only way to eliminate automobile exhaust particulate matter is to seek a solution from automobile fuel. With the rapid development of science and technology, the use of natural gas as a motor vehicle fuel has gradually become a reality. As a vehicle fuel, liquefied natural gas has no particle pollution in vehicle exhaust. There is no doubt that it can be divided into LNG (liquefied natural gas: liquefied natural gas) and CNG ( CompressedNaturalGas (compressed natural gas) is filled into automobile cylinders in two forms, and the corresponding filling stations are LNG filling stations and CNG filling stations. [0003] At present, compressor-type or hydraulic pump-type sub-gas station...

AI Technical Summary

Problems solved by technology

Moreover, compressor-type or hydraulic-pump-type sub-gas stations occupy a large area and are noisy, and the gas dispenser must be cooperated with the compressor or hydraulic pump, that is, the gas storage cylinder is pressurized through the compressor or hydraulic pump. It is necessary to complete the refilling of automobile gas cylinders, which has the disadvantages of high mechanical wear, huge power consumption, and huge investment costs.

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