LNG (liquefied natural gas) high-flow-rate gas release column

Abstract

The invention discloses an LNG (liquefied natural gas) high-flow-rate gas release column, which belongs to the technical field of LNG liquid addition. The LNG high-flow-rate gas release column comprises a liquid adding pipeline and a gas return pipeline, wherein the two ends of the liquid adding pipeline are respectively provided with a tank car unloading opening and a prying equipment liquid phase interface, the two ends of the gas return pipeline are respectively a tank car gas phase opening and a prying equipment gas phase interface, the middle part of the liquid adding pipeline is communicated with the middle part of the gas return pipeline through a pressure regulating pipeline, a first stop valve is arranged between a connecting point of the pressure regulating pipeline and the tank car unloading opening of the liquid adding pipeline, a first mass flow rate meter is arranged between the connecting point of the pressure regulating pipeline of the liquid adding pipeline and the prying equipment liquid phase interface, a second stop valve is arranged between the tank car gas phase interface of the gas return pipeline and the connecting point of the pressure regulating pipeline, a second mass flow rate meter is arranged between the connecting point of the pressure regulating pipeline of the gas return pipeline and the prying equipment gas phase interface, and a second stop valve is arranged on the pressure regulating pipeline. The LNG high-flow-rate gas release column has the advantages that the high-flow-rate requirements can be met, and a tank car can be conveniently and fast moved for realizing the unloading metering.

Description

technical field [0001] The invention relates to the technical field of LNG liquid addition, in particular to an LNG large-flow unloading column. Background technique [0002] At present, the liquid filling flow rate of LNG filling machines on the market is in the range of 3-80 kg / min. Such a small working flow rate determines that it is only suitable for LNG filling stations to fill and measure automobile steel cylinders, while LNG master stations There is no special large-flow metering equipment for the liquid filling metering of the mobile tanker and the unloading metering of the mobile tanker to the LNG filling station. At the same time, there is no special LNG unloading column, resulting in the LNG There are many inconveniences in unloading. [0003] In the LNG industry, the current method of moving tank trucks to unload LNG filling stations is to pass the weighbridge. When there is no weighbridge near the LNG station, the tank truck has to drive far away to weighbridge...

AI Technical Summary

Problems solved by technology

[0002] At present, the liquid filling flow rate of LNG liquid filling machines on the market is in the range of 3-80 kg / min. Such a small working flow rate determines that it is only suitable for LNG The gas filling station performs liquid filling measurement for automobile steel cylinders, while the liquid filling measurement of the LNG parent station for the mobile tanker and the unloading measurement of the mobile tanker for the LNG filling station do not have special large-flow metering equipment to undertake this work. At the same time, there is no special LNG unloading column, which causes many inconveniences in LNG unloading

[0003] In the LNG industry, the current method of moving tankers to unload LNG filling stations is to pass the weighbridge. If there is no weighbridge near the LNG station, the tanker The car has to be driven far away to be weighed, which is very inconvenient, time-consuming and laborious to unload the car, and there are also cases where there are large errors in the measurement value

[0004]The unloading metering data obtained by the traditional method of passing the floor scale is manual data, which cannot be uploaded to the LNG filling station at all, and the filling station cannot perform unified data management

Images