Matched Thermowell Probe Tip for Faster, More Accurate Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The interface between a thermowell and a temperature probe often results in measurement errors and increased response time due to mismatched surface geometries, leading to reduced thermal conduction and increased vibration, particularly in high-precision industries.
Innovation Solution
A temperature probe with an end cap shaped to geometrically match the internal bore of the thermowell, enhancing thermal contact and stability by using a thermally conductive material and tailored to the gun-drilled contour of the thermowell, thereby improving measurement accuracy and response time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a conventional temperature probe with a flat end cap is used in a thermowell with a gun-drilled bore, then the assembly is simple to manufacture, but thermal conduction is reduced and response time increases due to mismatched surface geometries
Solution Approach 1:
The end cap is designed with a curved surface contour that matches the gun-drilled bore geometry of the thermowell, replacing the conventional flat end cap surface. This curvature matching creates conformal contact between the probe and thermowell, significantly improving thermal conduction and reducing response time without requiring complex manufacturing processes.
2Measurement precision
If a temperature probe with a flat end cap is mounted in a thermowell, then manufacturing is easier, but measurement precision deteriorates due to air gaps and reduced thermal contact
Solution Approach 1:
The end cap surface is designed with a curved contour that conforms to the gun-drilled bore shape, eliminating air gaps and maximizing thermal contact area between the probe and thermowell. This geometric matching improves measurement precision while remaining manufacturable through standard machining processes.
Solution Approach 2:
The end cap geometry is specifically optimized at the critical interface region where thermal contact occurs, while the rest of the probe body maintains conventional simple geometries. This localized geometric optimization at the probe-thermowell interface maximizes thermal conduction without complicating the overall manufacturing process.
3Stability of the object's composition
If a mismatched end cap geometry is used in the thermowell assembly, then the probe can be easily installed, but vibration resistance decreases due to poor mechanical contact
Solution Approach 1:
The curved end cap surface is designed to match the gun-drilled bore contour, creating a mechanically interlocked interface that resists vibration and lateral movement. This geometric matching provides both thermal and mechanical stability without requiring complex fastening mechanisms or additional structural elements.
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 increases thermal conduction and reduces vibration, resulting in improved measurement accuracy and faster response times, especially in environments with high fluid flow and vibration.
Implementation Method 1
A temperature sensitive element is disposed within the probe body and has an electrical characteristic that varies with temperature
Implementation Method 2
enhancing thermal contact and stability by using a thermally conductive material
Data Source
AI summary
A temperature probe is mountable within a thermowell having an internal bore with an end having an end shape. The temperature probe includes a probe body configured to be mounted within the thermowell. A temperature sensitive element is disposed within the probe body and has an electrical characteristic that varies with temperature. An end cap is coupled to the probe body and has a surface contour that is shaped to match the end shape of the bore of the thermowell. A temperature measurement system employing the thermowell and the temperature probe having a geometrically matching end cap is also provided.