Gas Heat Exchange Pipeline Support for Permafrost Stability
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Solution Overview
Problem
Pipeline support devices fail to effectively dissipate heat generated by crude oil pipelines, leading to melting and sinking of permafrost, which can cause pipeline deformation and potential oil leakage.
Innovation Solution
A pipeline support device with a gas heat exchange mechanism that includes a support frame, ventilation pipes, and a control system to facilitate air exchange, allowing cold air to enter and cool the pipeline, thereby minimizing heat emission and permafrost melting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple rigid structure is used for pipeline support, then the device complexity is reduced and ease of manufacture is improved, but the ability to dissipate heat from the pipeline is insufficient, leading to permafrost melting
Solution Approach 1:
The support device is designed to perform multiple functions: mechanical support for the pipeline and heat dissipation through gas exchange. The enclosure structure serves both as a support element and as a chamber for cold air circulation, eliminating the need for separate cooling systems
Solution Approach 2:
The invention utilizes natural convection currents (pneumatic principles) to circulate cold air through the enclosure. The differential heating creates pressure differences that drive air flow through inlet and outlet openings, providing passive cooling without mechanical pumps or fans
2Device complexity
If no heat dissipation mechanism is provided, then the device complexity remains low, but the permafrost melts and causes pipeline deformation
Solution Approach 1:
The cooling system operates autonomously using natural convection principles. The differential heating between the pipeline and external environment automatically drives air circulation through the enclosure, requiring no external power source or control mechanisms
Solution Approach 2:
The invention changes the thermal parameters of the support system by introducing an enclosed space with controlled air flow. This transforms the thermal environment around the pipeline, maintaining lower temperatures that prevent permafrost melting
3Device complexity
If the pipeline is buried directly without support, then the device complexity is minimized, but the pipeline may deform due to permafrost melting and uneven settlement
Solution Approach 1:
The enclosure structure provides dual functionality: mechanical support to maintain pipeline position and thermal control to prevent permafrost melting. This integrated design simultaneously addresses stability and temperature control needs
Solution Approach 2:
The device proactively prevents permafrost melting by establishing cold air circulation before significant temperature rise occurs. The continuous cooling action counteracts the heat from the pipeline before it can cause structural changes in the surrounding soil
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 device effectively prevents melting and sinking of permafrost, reducing the likelihood of pipeline deformation and oil leakage by continuously exchanging heat and maintaining a stable pipeline position.
Implementation Method 1
A pipeline support device for preventing melting and sinking based on gas heat exchange
Implementation Method 2
cold air from the outside enters into the inside of the device to cool the inside
Data Source
AI summary
A pipeline support device for preventing melting and sinking based on gas heat exchange. The pipeline support device may be installed in a trench, and the pipeline support device may include a support frame and a gas heat exchange mechanism arranged on one side of the support frame. A bottom of the support frame may be fixed in the trench, a support partition may be fixed inside the support frame, the support partition separating the bottom of the support frame to form an upper chamber and a lower chamber. The gas heat exchange mechanism may include two groups of ventilation components, a group of air changing component and a group of control component. The control component may control opening and closing of ventilation openings of the ventilation pipes.