Liquefied Gas Tank Protruding Part Cell Partitioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquefied gas tanks have insufficient thermal insulation performance in the protruding part, leading to heat loss due to convective flow of vaporized gas.
Innovation Solution
The liquefied gas tank incorporates a protruding part with a plurality of discs that partition the interior into cells, each with a manhole and cover, and a vacuum double-shell structure to minimize convective flow and enhance thermal insulation, allowing access for inspection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the protruding part is provided with thermal insulation layers, then thermal insulation performance is improved, but convective heat loss still occurs due to vaporized gas flow
Solution Approach 1:
The protruding part interior is divided into multiple cells by a partition plate, which segments the continuous vaporized gas flow into separate compartments. This segmentation reduces the convective heat loss by limiting the movement path and volume of vaporized gas in each cell, thereby improving thermal insulation performance.
Solution Approach 2:
The partition plate is nested within the protruding part, creating a hierarchical structure where the partition plate is contained within the thermal insulation layers. This nested configuration allows the partition plate to effectively reduce convective flow while being protected and integrated with the existing thermal insulation system.
2Temperature
If discs are added to partition the protruding part into cells, then thermal insulation performance is improved, but device complexity increases
Solution Approach 1:
The protruding part is segmented into multiple cells using a partition plate, which improves thermal insulation by reducing convective heat loss. The segmentation is achieved through a single horizontal partition plate that divides the protruding part into an upper cell and a lower cell, maintaining relative structural simplicity while enhancing thermal performance.
Solution Approach 2:
The partition plate is strategically placed only in the protruding part where convective heat loss is most significant, rather than throughout the entire tank. This localized approach improves thermal insulation performance in the critical area while minimizing the increase in overall device complexity.
3Temperature
If the protruding part is sealed with thermal insulation layers, then thermal insulation performance is improved, but access for inspection becomes difficult
Solution Approach 1:
A manhole is pre-provided in the partition plate at the planned inspection location, allowing access to the protruding part interior before the thermal insulation layers are fully installed. This preliminary action ensures that inspection access is maintained while the thermal insulation system is in place, resolving the contradiction between sealing for insulation and accessing for inspection.
Solution Approach 2:
The manhole acts as an intermediary structure that provides access through the partition plate without compromising the thermal insulation layers. The manhole allows inspection personnel to access the protruding part interior while the thermal insulation layers remain intact, serving as a mediator between the need for insulation and the need for access.
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
This configuration significantly improves thermal insulation performance by reducing convective heat entry and allows for easy access and inspection of the tank interior.
Implementation Method 1
vaporized gas resulting from vaporization of the liquefied gas flows convectively
Implementation Method 2
first thermal insulation layer that encompasses the tank body; cylindrical second thermal insulation layer that encompasses the protruding part
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A liquefied gas tank includes: a tank body that stores liquefied gas; a protruding part protruding upward from the tank body, the protruding part being a hollow part whose interior communicates with an interior of the tank body; a first thermal insulation layer that encompasses the tank body; a cylindrical second thermal insulation layer that encompasses the protruding part except a distal end portion of the protruding part; and a plurality of discs disposed in a region in the interior of the protruding part, the region overlapping the second thermal insulation layer, the discs partitioning off the interior of the protruding part into a plurality of cells that are arranged in a protruding direction of the protruding part.