Main-sub pot-type combined container for liquid nitrogen

Abstract

The invention relates to a main-sub pot-type combined container for liquid nitrogen. The container comprises sub pots, a pipeline system, an interlayer, a main pot, a measurement and control system, safety accessories and an external operation platform; the combined container for the liquid nitrogen is coated with paint and mounted on a basic platform; five sub pots are distributed concentrically to form an equilateral polygon; the pipeline system is arranged in a center area from five sub pots to the main pot; each sub pot adopts the structure of a vertical cylinder; the bottoms of the sub pots are supported by support legs; a filling opening, an air outlet, an external pressurization opening and an upper shifting filling opening are formed in each pot. The combined container can be used for implementing the processes of shifting filling, pressurization, pressure release, and real-time monitoring and control, and is ideal large-sized liquid nitrogen storage and supply equipment. The container is used for storage and supply of the liquid nitrogen, liquid is discharged out through a pressure extrusion method, the operation is simple, the reliability is high, discharge loss during the storage period is reduced through storage under pressure, compared with a spherical tank, the main-sub pot-type combined container is easier to manufacture and mount, and the manufacturing and mounting costs are low, therefore, the container has relatively high security, stability and controllability.

Description

technical field [0001] The invention relates to a liquid nitrogen container, in particular to a mother-child tank type liquid nitrogen combination container. Background technique [0002] The combined container type of mother-child tank type refers to having multiple sub-tanks (more than three) connected in parallel to form an inner tank to meet the large-capacity liquid storage requirements of cryogenic liquid storage stations. A plurality of child tanks are assembled side by side in the mother tank. Its advantages are that it adopts the method of pressure extrusion to discharge liquid to the outside without the need for infusion pump to discharge liquid, so it is easy to operate and has high reliability. Storage under pressure reduces discharge loss during storage. Manufacturing and installation are easier to achieve than spherical tanks, and the cost of manufacturing and installation is low. The mother-child tank combination container can realize the process of transfer,...

AI Technical Summary

Problems solved by technology

[0004] (2) Generally, a single safety accessory is installed, and the hysteresis of the safety valve and the one-time use of the bursting disc make it difficult to meet safety requirements;

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