Roller Device Sheathing for Temperature Sensor Protection
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Solution Overview
Problem
Temperature sensors face mechanical and chemical stress when directly contacting materials being transported at high speeds or exposed to aggressive chemicals, leading to reduced lifespan and inaccurate measurements.
Innovation Solution
A sensor device with a roller having a sheathing with a cavity, where the temperature sensor is positioned inside to measure radiation from the sheathing, protected from direct contact with the material and chemical agents, with a thinner section for fast heat transfer and a shielding to prevent undesired radiation, allowing for reliable temperature measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the temperature sensor is in direct contact with the material, then the temperature measurement is accurate, but the sensor and material are damaged due to mechanical stress at high speeds
Solution Approach 1:
The sheathing acts as an intermediary between the temperature sensor and the material. It has a first portion with greater thickness for mechanical strength and a second portion with smaller thickness for thermal coupling, allowing the sensor to measure temperature through the sheathing without direct contact with the high-speed material.
Solution Approach 2:
The sheathing has non-uniform thickness with different portions serving different functions: the first portion provides mechanical protection where needed, while the second portion provides thermal coupling for temperature sensing. This local differentiation resolves the contradiction between protection and measurement.
2Loss of time
If the sheathing thickness is reduced for fast heat transfer, then the temperature measurement response is faster, but the mechanical strength and protection are reduced
Solution Approach 1:
The sheathing implements local quality by having different thicknesses in different portions. The second portion has reduced thickness for fast thermal response, while the first portion maintains greater thickness for mechanical strength, resolving the contradiction between response speed and structural integrity.
Solution Approach 2:
The sheathing is segmented into functionally distinct portions: a first portion for mechanical support and a second portion for thermal coupling. This segmentation allows each portion to be optimized for its specific function without compromising the other.
3Productivity
If chemical agents are used for processing, then the material treatment is effective, but the temperature sensor produces distorted signals due to chemical exposure
Solution Approach 1:
The sheathing serves as a protective intermediary that isolates the temperature sensor from chemical agents while maintaining thermal coupling for accurate temperature measurement. This allows chemical processing to proceed effectively without interfering with sensor readings.
Solution Approach 2:
The temperature sensor is extracted from the direct chemical environment and placed inside the protected cavity of the roller, with temperature measurement performed through the sheathing wall, removing the harmful chemical exposure while maintaining measurement capability.
4Measurement precision
If the sensor is positioned close to the sheathing for accurate measurement, then the temperature reading is precise, but the sensor is exposed to mechanical and chemical hazards
Solution Approach 1:
The sheathing wall acts as an intermediary barrier that allows the sensor to be positioned close to the material for accurate temperature measurement while protecting the sensor from mechanical and chemical hazards. The sheathing transmits thermal energy while blocking harmful factors.
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 provides a robust and accurate temperature measurement system that withstands high-speed transportation and chemical exposure, ensuring a longer sensor lifespan and precise readings.
Implementation Method 1
a temperature sensor which is arranged inside the roller and is configured to measure a radiation (representing a temperature) coming from the sheathing
Implementation Method 2
The smaller thickness of the second portion provides a fast heat transfer from material whose temperature shall be measured through the sheathing material
Data Source
Figure 1
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AI summary
A sensor arrangement for temperature measurement of a material comprises a roller device (1) with a sheathing (11) configured such that the material can be rolled upon the sheathing. The sheathing comprises a first circumferential portion (13) and a second portion (10), wherein a thickness of the sheathing in the first circumferential portion is greater than a thickness of the sheathing in the second portion. A temperature sensor (5) arranged in a cavity inside the sheathing in proximity of the second portion.