HPB pressurization system of LNG storage container

Abstract

The invention relates to the field of LNG supply, in particular to an a HPB pressurization system of an LNG storage container, wherein the LNG storage container is used for storing LNG, and a secondary refrigerant heat release unit is arranged in the container; an LNG heat exchange unit and a secondary refrigerant heating unit are arranged in a water bath type heat exchanger; a secondary refrigerant tank shell communicates with a secondary refrigerant tank inlet pipeline and a secondary refrigerant tank outlet pipeline, and a secondary refrigerant is stored in the shell; a secondary refrigerant is pressurized and conveyed into the water bath type heat exchanger through a circulating pump and vaporized through a heating unit; and the control unit is in control connection with the secondary refrigerant circulating pump. According to the scheme that the secondary refrigerant is adopted to directly heat and vaporize LNG locally and then pressurize the gas phase of the storage container, the problems that the LNG storage container is low in pressurization speed and cannot pressurize the LNG storage container at a low liquid level are solved, and the active rapid pressurization function of the LNG storage container is achieved.

Description

technical field [0001] The invention relates to the field of LNG gas supply, in particular to an HPB pressurization system for an LNG storage container. Background technique [0002] With the in-depth transformation of my country's energy consumption structure, LNG, as a clean energy, has achieved considerable development and is widely used in various fields due to its advantages such as high calorific value, low price, low pollution after combustion, and environmental friendliness. As a fuel, LNG is safe, efficient, clean and non-polluting, which not only promotes the transformation of my country's energy structure, but also effectively reduces environmental pollution caused by combustion exhaust emissions. [0003] During the gas supply process of the LNG storage container, due to the consumption of LNG liquid, the LNG gas phase space increases and the pressure decreases. Ensuring the pressure stability of the LNG gas phase space is the key to the normal operation of the L...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to solve the problems in the prior art that the pressurization speed of the LNG storage container is slow during the gas supply process and the low liquid level cannot realize the pressurization function, the present invention provides an LNG storage container HPB pressurization system to solve the above problems

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