Insulation Jacket Leak Detection via Drive Fluid Flow
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Solution Overview
Problem
Existing methods for detecting leaks in structures carrying hazardous fluids, such as those trapped under insulation jackets, are ineffective and pose risks due to the difficulty in detecting and clearing corrosive fluids.
Innovation Solution
A method and apparatus involving a jacket covering a structure that forms a pocket with an inlet and outlet, where a drive fluid is injected to move potentially harmful fluids out of the pocket through the outlet, which can then be detected downstream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a jacket covers the structure to protect it, then the structure is protected from external damage, but a pocket is formed where corrosive fluid can be trapped and hard to detect
Solution Approach 1:
The jacket is segmented to include an inlet and outlet, creating a through-flow path that divides the previously enclosed pocket into a controlled flow channel. This segmentation allows the trapping space to be converted into a detectable flow path while maintaining the protective covering function.
Solution Approach 2:
A drive fluid is introduced as an intermediary substance that flows through the pocket and carries any trapped corrosive fluid to the outlet. This mediator enables indirect detection of trapped fluid by observing the drive fluid that has passed through the pocket environment.
2Measurement precision
If traditional leak detection methods are used, then leakages can be detected in accessible areas, but they are ineffective for fluids trapped under insulation jackets
Solution Approach 1:
The detection system extracts the detection function from the traditional direct sensing approach and relocates it to the outlet of the jacket. By taking out the trapped fluid and transporting it to an accessible location through the drive fluid flow, detection can occur in a readily accessible position while maintaining coverage of the previously inaccessible area.
Solution Approach 2:
The drive fluid serves as an intermediary carrier that transports traces of leaked fluid from the inaccessible pocket under the jacket to the accessible outlet where detection equipment can sample and analyze the fluid composition.
3Device complexity
If no active clearing system is implemented, then the system remains simple, but corrosive fluid accumulates in the pocket causing damage over time
Solution Approach 1:
The jacket is pre-configured with inlet and outlet openings during installation, establishing a passive flow path structure in advance. This preliminary action creates the framework for active clearing without requiring complex modifications later, balancing simplicity with reliability.
Solution Approach 2:
A drive fluid flow (gas or liquid) is used to actively clear the pocket of accumulated corrosive fluid. This pneumatic or hydraulic clearing mechanism provides reliable removal of harmful substances while maintaining relatively simple system architecture compared to mechanical scraping or heating systems.
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 solution effectively contains and evacuates potentially harmful fluids from the pocket, reducing the risk of accidents and enabling quick detection of leaks, thereby enhancing safety and maintenance efficiency.
Implementation Method 1
injecting a drive fluid into the pocket in a flow through the inlet; and moving a potentially harmful fluid in the pocket with the flow of injected drive fluid out of the pocket through the outlet
Data Source
AI summary
A method and apparatus are for maintaining a structure for carrying a fluid. In addition, a method, apparatus and system are for detecting leakage from a structure carrying a fluid. The methods include: providing a jacket covering at least a portion of a structure carrying a fluid, the jacket forming a pocket between the jacket and the structure, the pocket having an inlet and an outlet; injecting a drive fluid into the pocket in a flow through the inlet; and moving a potentially harmful fluid in the pocket with the flow of injected drive fluid out of the pocket through the outlet. The method may further include detecting the potentially harmful fluid by use of a detector downstream of the pocket. The described apparatuses and/or the system may be for performing one or more of the methods.