Intelligent pressurization system for liquefied natural gas (LNG) cylinder

Abstract

The invention discloses an intelligent pressurization system for a liquefied natural gas (LNG) cylinder. The intelligent pressurization system comprises the LNG cylinder and a pressurization pipe arranged on the LNG cylinder, wherein the pressurization pipe is provided with a first manually-operated valve, a pressurization valve and a pressurizer in sequence, the pressurization pipe is provided with a control valve in parallel connection with the pressurization valve through a bypass pipe, the LNG cylinder is provided with a pressure sensor, and the control valve is controlled by the pressuresensor. The pressurization system uses the parallel connection control valve to prevent a conventional pressurization pipeline from the failure of pressurization due to faults, when the pressure sensor detects that the pressure is lower than the rated pressure, the control valve is opened, thus the purpose of pressurizing the cylinder is realized and stable external gas supply of the cylinder is ensured; and when the pressure sensor detects that the pressure is higher than the rated pressure, the control valve is closed and stops pressurization to prevent excessive pressure in the cylinder.

Description

technical field [0001] The present application relates to the field of LNG gas cylinders, in particular to an intelligent pressurization system for LNG gas cylinders. Background technique [0002] When the existing LNG cylinder is pressurized, it is usually pressurized by a manual valve, a booster valve and a booster arranged in sequence on the booster pipe, but it cannot be used due to the low pressure in the bottle or when the booster valve fails. The inside of the gas cylinder is pressurized, so that there is liquid in the gas cylinder but cannot be output outside, which affects the normal gas supply. Contents of the invention [0003] The purpose of the present invention is to provide an intelligent pressurization system for LNG cylinders to solve the problems in the prior art. [0004] To achieve the above object, the present invention provides the following technical solutions: [0005] The embodiment of the present application discloses an intelligent superchargin...

AI Technical Summary

Problems solved by technology

[0002] When the existing LNG cylinder is pressurized, it is usually pressurized by a manual valve, a booster valve and a supercharger arranged in sequence on the booster pipe, but because the pressure in the cylinder is low or the booster valve fails, it cannot be used. The inside of the gas cylinder is pressurized, resulting in liquid in the gas cylinder but unable to output it, which affects the normal gas supply

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