LNG storage tank for diesel-LNG hybrid power ship

Abstract

The invention discloses an LNG storage tank for a diesel-LNG hybrid power ship. The LNG storage tank comprises a sealed shell and a sealed inner container arranged in the shell, wherein the shell is provided with a first LNG filling pipe communicated with the bottom of the inner container; the inner container is supported in the shell through a plurality of glass steel pipe struts, and a heat insulation layer is wound on the inner container; an interlayer between the shell and the inner container is vacuum; the middle part of the inner container is provided with a wave-proof device; the wave-proof device comprises a central pipe and a support plate; the axis of the central pipe is superposed with the axis of the inner container; and the support plate is trumpet-shaped, an opening at the small end of the support plate is welded with the outer circumference surface of the central pipe, and an opening at the large end of the support plate is welded with the inner wall of the inner container. Because the wave-proof plate with a special structure is arranged in the inner container, impact and oscillation of liquid in the tank body in each direction when the ship runs are reduced, and the safety is ensured. Meanwhile, the LNG storage tank provides proper liquid storage volume and good heat insulation performance, and is fully suitable to be used in the ship.

Description

technical field [0001] The invention relates to a cryogenic container, in particular to an LNG storage tank for a diesel-LNG hybrid ship. Background technique [0002] The main component of LNG (Liquefied Natural Gas, liquefied natural gas) is composed of methane. It is obtained by cooling the gaseous natural gas under normal pressure to -162°C and condensing it into a liquid. It has the advantages of saving storage and transportation space and cost, large calorific value, and high performance. features. [0003] LNG is a clean and efficient energy source. Many countries have listed LNG as the preferred fuel. The proportion of natural gas in energy supply has increased rapidly. LNG as a hybrid power has also begun to be gradually applied in the automotive field. [0004] As the most economical means of transportation, ships generally use diesel fuel at present, but diesel-powered ships have high fuel consumption, high operating costs, and serious pollution. Therefore, diese...

AI Technical Summary

Problems solved by technology

[0005] There are generally two types of existing LNG cryogenic storage tanks, one is used in hybrid vehicles, but the storage tank is small in size (only about 60L-450L), which cannot meet the needs of ships

The other is the common LNG cryogenic liquid tank container, which is mainly used for LNG transportation and used as a fuel storage tank for ships. The volume is too large, which wastes the space on the ship, which is uneconomical, and the general working pressure is low, so it cannot be directly supplied to the ship’s internal combustion engine. air supply

Images