Magnetic Flap Valve Closure Under Variable Drilling Orientation
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Solution Overview
Problem
Existing in-situ fidelity coring devices struggle to maintain pressure effectively under different drilling environments, particularly due to inadequate closure of flap valves in varying inclined states.
Innovation Solution
A simulation device for magnetic closing of flap valves is developed, featuring a worktable with a driving mechanism, a magnetic pressure maintaining control mechanism, and a magnetic valve cover closing control mechanism. This device simulates the closing process of flap valves under magnetic force across different drilling orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flap valve closure depends on elasticity and gravity, then the structure is simple, but the valve cannot be closed properly under different inclined states
Solution Approach 1:
The patent replaces the traditional mechanical closure mechanism (relying on elasticity and gravity) with a magnetic closure mechanism. Magnets are embedded in the valve cover and valve body, creating magnetic attraction that reliably closes the valve regardless of drilling inclination or gravitational direction, thus resolving the contradiction between structural simplicity and reliable closure under varying conditions.
2Reliability
If a magnetic closure mechanism is introduced, then the pressure maintaining effect is improved, but the device complexity increases
Solution Approach 1:
The magnetic closure mechanism serves multiple functions: it provides reliable valve closure under all drilling conditions, maintains pressure effectively, and can be integrated into the existing valve structure. The magnets are embedded within the valve cover and body, allowing the same component to perform both structural and magnetic closure functions, thereby reducing overall system complexity while improving reliability.
3Reliability
If the valve seat and valve cover areas are increased, then the pressure maintaining capability is improved, but the device size increases
Solution Approach 1:
The patent optimizes the balance between valve seat area, valve cover area, and magnetic field strength. By adjusting these parameters, the system achieves effective pressure maintenance with appropriately sized components. The magnetic field strength is calibrated to provide sufficient closure force without requiring excessively large valve areas, thus maintaining pressure capability while controlling device size.
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 simulation device effectively replicates the magnetic closure of flap valves under various drilling conditions, enhancing the pressure maintenance capability of deep core sampling devices by ensuring proper closure regardless of the drilling direction or angle.
Implementation Method 1
a first magnet for repelling the magnetic valve cover
Implementation Method 2
a second magnet arranged inside the cylinder body, and the second magnet is used to attract the magnetic valve cover
Data Source
AI summary
A simulation device for magnetic closing of flap valve is disclosed, which includes a worktable, a driving mechanism for driving the worktable to rotate, a valve seat, a magnetic valve cover movably connected with the valve seat, a first magnet for repelling the magnetic valve cover, a cylinder, a lifting equipment for driving the cylinder to rise and fall. When the cylinder is inserted into the valve seat driven by the lifting equipment, the cylinder prevents the closure of the magnetic valve cover. When the cylinder is out of contact with the magnetic valve cover driven by the lifting equipment, the magnetic valve cover is closed, and the worktable in the simulation device can rotate and turn over, so that the closing process of flap valve (valve seat and valve cover) in any direction of deep drilling coring under the action of magnetic force is simulated.