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

Abstract

The invention discloses an LNG large-flow gas unloading column, which belongs to the technical field of LNG liquid addition. The LNG large-flow gas unloading column of the present invention includes a liquid feeding pipeline and a gas return pipeline. The middle part of the liquid filling pipeline and the middle part of the return gas pipeline are connected through a pressure regulating pipeline, and a first stop valve is installed between the tank car unloading port of the liquid filling pipeline and the connection point of the pressure regulating pipeline. A first mass flow meter is installed between the connection point of the pressure regulating pipeline of the liquid feeding pipeline and the interface of the liquid phase of the skid, and a second stop valve is installed between the gas phase port of the tank car of the return gas pipeline and the connection point of the pressure regulating pipeline. A second mass flow meter is provided between the connection point of the pressure regulating pipeline of the return gas pipeline and the pry gas phase interface, and a second shut-off valve is provided on the pressure regulating pipeline. The invention can meet the requirement of large flow rate, and can conveniently and quickly unload and measure the mobile tanker.

Description

Technical field [0001] The present invention involves a LNG liquid plus technology field, especially a large LNG large flow unloading pillar. Background technique [0002] At present, the liquid flow of LNG plus liquid machines on the market is within the range of 3-80 kg / min. Such a small working traffic determines that only the LNG gas station is used to add liquid to the car cylinder, and the LNG parent stationThe unloading of the liquid metering of the mobile tank and the mobile tank vehicle to the LNG gas station has no special large flow metering equipment to undertake this work. At the same time, there is no special LNG unloading pillar, which causes LNGThere are many inconveniences in the existence of Qi. [0003] In the LNG industry, the mobile tank car is generally adopted when unloading the LNG gas station for unloading the vehicle. When there is no floor pound near LNG station, the tank can only be driven to the pound.It is inconvenient, time -consuming and laborious,...

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

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