LNG station liquid accumulation pool device

Abstract

The invention relates to an LNG station liquid accumulation pool device aiming at solving the problem that accumulated water in a fending groyne and a pipe ditch is difficult to drain. The device comprises a pipe ditch liquid accumulation pool unit, a fending groyne liquid accumulation pool unit, a water inlet and drainage pipeline unit and a control unit. The pipe ditch liquid accumulation pool unit comprises a pipe ditch liquid accumulation pool, a first liquid level meter and a first combustible gas detector. The fending groyne liquid accumulation pool unit comprises a fending groyne liquidaccumulation pool, a second liquid level meter, a second combustible gas detector and a water pump. The water inlet and drainage pipeline unit comprises a main water inlet pipeline, a first water inlet branch pipeline, a first valve on the first water inlet branch pipeline, a second water inlet branch pipeline, a second valve on the second water inlet branch pipeline, a main drainage pipeline, afirst drainage branch pipeline, a third valve on the first drainage branch pipeline, a second drainage branch pipeline and a fourth valve on the second drainage branch pipeline. The first liquid levelmeter, the first combustible gas detector, the second liquid level meter and the second combustible gas detector control the starting and stopping of the water pump and on and off of the first valve,the second valve, the third valve and the fourth valve together in an interconnected mode through the control unit.

Description

technical field [0001] The invention relates to a liquid accumulation pool device of an LNG filling station. Background technique [0002] Liquefied Natural Gas (LNG for short), the main component is methane, which is formed by compressing and cooling natural gas to its freezing point (-161.5°C). After the pipeline is put into operation, the operating temperature is usually kept at -162°C ℃. [0003] It is difficult to discharge the accumulated water in the protection embankment of the LNG filling station and the pipe ditch of the LNG pipeline, which will bring certain operational risks. [0004] On the one hand, the protection embankment is an open-air design, and rainy and snowy weather will easily cause water accumulation in the protection embankment, while the area inside the protection embankment is a flammable, explosive and low-temperature place. The water will instantly absorb heat and vaporize, producing vaporized white clouds, which will cause operational safety ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem in the prior art that it is difficult to discharge the accumulated water in the protection embankment of the LNG gas filling station and the LNG pipeline pipe ditch, which will bring certain operational risks, and to provide a liquid accumulation pool of the LNG gas filling station device

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