Heated Tailgate Assembly for Freeze-Resistant Slurry Unloading
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Solution Overview
Problem
Conventional vacuum tanks used for transporting drill cuttings in cold climates face issues with freezing slurry cuttings, leading to difficulties in unloading and sealing, and inefficient use of heating systems, which affects operational efficiency and equipment wear.
Innovation Solution
A tailgate assembly for roll-off containers with a heating system, including a tailgate hinge, sealing material, and a tailgate warming tube loop that circulates heating fluid, constructed from steel with a ductile-brittle transition temperature less than -50°C, to maintain slurry cuttings from freezing and ensure effective sealing and unloading in cold conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heating functions are provided on vacuum tanks to prevent slurry freezing in cold climates, then the ability to operate in cold weather is improved, but equipment wear increases during warm months when heating is unnecessary
Solution Approach 1:
The heating system is segmented into removable heating panels that can be detached from the vacuum tank. This allows the heating functionality to be separated from the main tank structure, enabling the tank to be used without heating components during warm months, thereby reducing unnecessary equipment wear while maintaining cold weather operation capability when needed.
2Productivity
If the tailgate is opened repeatedly for unloading slurry, then the unloading function is improved, but the sealing ability of the tailgate deteriorates
Solution Approach 1:
A flexible seal member is provided between the tailgate and the vacuum tank body. This flexible seal can deform and conform to the mating surfaces, maintaining effective sealing even after repeated opening and closing operations. The flexibility allows the seal to accommodate wear and dimensional variations while preserving the vacuum integrity.
3Ease of operation
If slurry cuttings freeze adjacent to the tailgate, then the sealing and unloading operations are hindered, but providing heating adds complexity to the system
Solution Approach 1:
Heating is applied locally at the tailgate area rather than throughout the entire vacuum tank. This localized heating approach prevents slurry freezing specifically at the tailgate interface where it would interfere with sealing and unloading operations, while minimizing the overall heating system complexity and energy consumption compared to full-tank heating.
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 solution enables efficient unloading of slurry cuttings in cold climates by preventing freezing and maintaining vacuum pressure, reducing equipment wear, and allowing for timely removal of vacuum tanks from oil and gas well sites without unnecessary heating-related wear during warm months.
Implementation Method 1
a tailgate warming tube loop that circulates a heating fluid through the tailgate warming tube loop
Data Source
AI summary
A tailgate assembly for a roll-off container includes a tailgate hinge that is operable to attach a tailgate to a container such that the tailgate is movable between an open position and a closed position. A sealing material located between the container and the tailgate when the tailgate is in the closed position.