Pipe-Type Secondary Barrier for LNG Tank Leak Vaporization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquefied gas storage tanks face challenges with typical drip trays that require excessive space and are not designed to vaporize leaked gas efficiently, leading to spatial constraints and inefficiencies in managing leaked cryogenic fluids.
Innovation Solution
An insulation system with a pipe-type partial secondary barrier that vaporizes leaked liquefied gas within a pipe structure, eliminating the need for drip trays and optimizing space usage by allowing complete vaporization of leaked gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a drip tray-type partial secondary barrier is used to contain leaked liquefied gas, then liquid tightness and temporary protection are achieved, but excessive space is required and spatial constraints increase
Solution Approach 1:
The invention changes the functional parameter of the partial secondary barrier from liquid containment to vaporization. By transforming the barrier's purpose from holding liquid (drip tray) to facilitating phase change (vaporization pipe), the space requirement is dramatically reduced while maintaining safety through complete vaporization of leaked gas
Solution Approach 2:
The invention utilizes phase transition (vaporization) as the core mechanism. The pipe-type partial secondary barrier is designed to enable complete vaporization of leaked liquefied gas, converting the harmful liquid phase into gas phase that can be safely dispersed, thereby eliminating the need for large containment spaces
2Reliability
If multiple drip trays are installed on a flat bottom surface to collect leaked fluid, then leakage coverage is improved, but device complexity and spatial arrangement become more complex
Solution Approach 1:
The invention extracts the vaporization function from the traditional drip tray structure. Instead of using multiple drip trays distributed across the bottom surface, a single pipe-type partial secondary barrier is introduced that provides both vaporization and discharge functions, simplifying the overall structure while maintaining effective leakage management
Solution Approach 2:
The pipe-type partial secondary barrier serves multiple functions: it acts as a vaporization chamber, provides a discharge path for vaporized gas, and replaces the need for multiple drip trays. This multi-functional design reduces device complexity while maintaining comprehensive leakage coverage
3Area of stationary object
If a pipe-type partial secondary barrier is used to vaporize leaked gas, then space requirements are reduced and vaporization efficiency is improved, but design and manufacturing complexity increases
Solution Approach 1:
The invention establishes a systematic design method that transforms complex vaporization design into a standardized parameter selection process. By defining key parameters (pipe diameter, length, material) and providing selection criteria based on leaked gas volume and type, the design complexity is managed while achieving efficient vaporization in reduced space
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively vaporizes leaked liquefied gas, reducing spatial requirements and ensuring compliance with leakage standards without the need for additional space, while accommodating various forms and conditions based on gas type and procedural changes.
Implementation Method 1
the leaked liquefied gas is completely vaporized while passing through the partial secondary barrier configured in the form of a pipe
Implementation Method 2
completely vaporizing leaked liquefied gas from a storage tank within a pipe-type partial secondary barrier
Data Source
Figure 1
Figure 2(a)~2(f)
Figure 3~4
AI summary
Disclosed herein is a method of designing an insulation system for type B independent liquefied gas storage tanks. The design method includes: a liquefied gas selection step in which the type of liquefied gas is selected; a leakage standard setting step in which a leakage standard for the liquefied gas is set; a shape adoption step in which a shape of a partial secondary barrier is adopted; a setting and assessment step in which a target evaporation rate of the liquefied gas is set and a leakage amount of the liquefied gas is assessed; a comparison step in which the target evaporation rate of the liquefied gas is compared with the leakage amount of the liquefied gas; a shape design step in which the shape of the partial secondary barrier is designed; and an installation step in which the partial secondary barrier is installed.