Vertical Subsurface Pressure Vessel With Interstitial Leak Detection
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Solution Overview
Problem
Existing storage systems for pressurized hazardous and nonhazardous fluids face challenges in efficiently storing large volumes in a cost-effective manner, particularly in locations lacking large underground salt deposits, and struggle with leak detection and containment.
Innovation Solution
A subterranean storage system is constructed using a cylindrical casing secured into bedrock with a double containment closure and pipe risers, allowing for leak detection through pressure monitoring in an interstitial space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If above-ground storage facilities are used, then construction is easier and costs are lower, but the facilities must resist weather degradation and require substantial surrounding infrastructure, increasing land area requirements
Solution Approach 1:
The patent transitions from above-ground storage to underground storage by excavating a hole in the earth and placing the tank therein. This dimensional change from surface-level to subterranean storage eliminates the need for large land areas while providing weatherproof and temperature-stable storage conditions.
2Stability of the object's composition
If underground storage facilities are used, then weatherproof and temperature stable storage is achieved, but construction is more difficult and costs are significant
Solution Approach 1:
The storage system is divided into modular components: a pre-manufactured tank, a separate closure assembly with detection devices, and surrounding infrastructure. This segmentation allows for easier construction and assembly while maintaining the benefits of underground storage.
3Quantity of substance
If salt caverns are used for large storage needs, then large volumes can be stored economically, but large underground deposits of salt are required which only occur in a few places on earth
Solution Approach 1:
The patent creates a universal storage solution that can be implemented in various geological conditions by excavating holes in the earth and placing tanks therein, rather than being limited to specific salt deposit locations. The system adapts to different geological environments while providing large-volume storage capability.
4Ease of manufacture
If pre-manufactured tanks are buried in holes dug into overburden soil, then construction is easier, but leaks are hard to detect and can permeate through the ground causing extensive ground and well water contamination
Solution Approach 1:
The patent introduces an intermediary detection system consisting of sensors and monitoring devices installed within the closure assembly. These intermediaries continuously monitor for leaks and provide early warning, enabling rapid detection and containment of any leakage before it can cause extensive contamination.
5Adaptability or versatility
If large holes are dug into bedrock to install tanks, then storage can be achieved in locations without salt deposits, but construction becomes more difficult and costly
Solution Approach 1:
The patent employs a dynamic construction approach where the hole size and depth are adjusted based on the specific geological conditions and storage requirements. This flexible methodology allows adaptation to various locations and geological formations while optimizing construction difficulty and cost.
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
Enables efficient, economical storage of large volumes of pressurized fluids with rapid leak detection and containment, minimizing environmental contamination.
Implementation Method 1
A cement mixture is used to fill the gap space. The cement mixture and the surrounding bedrock reinforce the storage tank and firmly secure it into position.
Implementation Method 2
A subterranean storage system is constructed using a cylindrical casing secured into bedrock with a double containment closure and pipe risers, allowing for leak detection through pressure monitoring in an interstitial space.
Data Source
AI summary
A system and method for creating a subterranean storage facility at a location where there is underlying bedrock. A storage tank is provided that is formed from a cylindrical casing that is sealed with a top closure and a bottom closure. A first hole is excavated through the overburden. At the bottom of the first hole, a second hole is excavated into the bedrock. The storage tank is placed in the second hole with the top closure of the storage tank facing upward. The storage tank is set into the bedrock with a cement mixture. Pipe risers are extended into the storage tank through the first closure. The pipe risers extend up through the first hole and provide access to the storage tank.