High-Temperature Extensometer With Deformation Magnifying Mechanism
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Solution Overview
Problem
Existing deformation sensing devices for high-temperature environments lack accuracy and reliability in measuring long-term deformations of industrial components, such as pressure vessels and pipes, which poses a risk to safety and efficiency.
Innovation Solution
An extensometer with a deformation magnifying mechanism using flexible hinges and a sensor system, comprising extension bars, mounting block assemblies, connecting pieces, and a sensor bracket, designed to measure high-temperature structural deformations with high accuracy and adaptability to various surface shapes and spans, utilizing materials with low thermal conductivity and adjustable installation for precise measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional deformation sensing devices are used in high-temperature environments, then they can monitor standard test pieces in laboratories, but their measurement accuracy is unsatisfactory for industrial components
Solution Approach 1:
The extensometer is divided into multiple independent modules: extension bars for high-temperature exposure, mounting block assemblies for secure attachment, connecting pieces for structural linkage, and a deformation magnifying mechanism for precision measurement. Each module performs a specific function, allowing the device to maintain measurement accuracy while withstanding high-temperature industrial environments up to 1200°C
Solution Approach 2:
The deformation magnifying mechanism acts as an intermediary between the extension bars that experience thermal deformation and the sensor that measures the deformation. This mechanism amplifies the subtle deformations caused by high-temperature effects, enabling accurate measurement of material behavior under extreme conditions while protecting the sensor from direct thermal exposure
2Adaptability or versatility
If extension type sensing devices are designed for high temperature components, then they can monitor local deformations of pipes, but their accuracy is unsatisfactory during application
Solution Approach 1:
The extensometer is designed with universal mounting block assemblies that can be attached to various industrial components including pipes, pressure vessels, and test pieces with different surface shapes. The extension bars can be adjusted in length and configuration to accommodate different spans and component geometries, while the deformation magnifying mechanism maintains consistent measurement precision across all applications
Solution Approach 2:
The extensometer features adjustable mounting block assemblies that can be positioned and oriented to match different component geometries and surface shapes. The extension bars can be configured with different lengths and orientations to accommodate various spans, allowing the device to adapt dynamically to different industrial components while maintaining measurement accuracy through the deformation magnifying mechanism
3Duration of action of stationary object
If deformation sensing devices operate at high temperatures for long terms, then they can monitor structural safety, but their service life is reduced due to thermal effects
Solution Approach 1:
The sensor is extracted from the high-temperature zone and positioned outside the extension bars through the use of connecting pieces and mounting structures. This allows the sensor to operate in a cooler environment while still measuring the deformation of the extension bars that are exposed to high temperatures, thereby extending the device's service life and maintaining reliability for long-term monitoring
Solution Approach 2:
The mounting block assemblies are designed with thermal isolation features and secure attachment mechanisms that protect the device components from thermal damage before it occurs. The extension bars are specifically selected for high-temperature resistance, and the overall structure is designed to accommodate thermal expansion and contraction, cushioning the device against thermal effects and enabling long-term operation in high-temperature environments
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 extensometer provides real-time, high-accuracy measurements of local deformations up to 1200°C with high linearity and resolution, ensuring reliable and repeatable results, and can be applied to diverse industrial settings with minimal maintenance and no lubrication required.
Implementation Method 1
a deformation magnifying mechanism, a sensor and a sensor bracket, the extension bar is a round bar, one end of which is planar, the other end of which is tapered; the mounting block assemblies are fixed at the planar ends of the extension bars by inserting mounting screws into mounting holes, respectively
Implementation Method 2
the sensor is mounted on the sensor bracket, perpendicular to the deformation magnifying mechanism and connected to a test terminal
Data Source
AI summary
The present invention relates to an extensometer for measuring high-temperature structural deformations by magnification, the structure of the extensometer is that: two mounting block assemblies are mounted at the planar ends of two extension bars respectively, the top ends of the extension bars are connected tightly with the surface of a test piece, two connecting pieces are mounted at the inner sides of the two mounting block assemblies respectively, a deformation magnifying mechanism and a sensor bracket are mounted on the connecting pieces, a sensor is mounted on the sensor bracket, two connecting pieces are mounted on a same straight line, and the straight line is parallel to a straight line at which the top ends of the two extension bars are located, so as to ensure that the deformation of the test piece is delivered equally to the deformation magnifying mechanism on the connecting pieces. The present invention can measure local deformations of various metal and non-metallic structures online for a long time in real time at high temperatures, extend the deformation of the test piece at high temperatures outside of the high temperature region, and measure the deformations after they are magnified through a mechanical magnifying mechanism, thus the present invention has a very high linearity, resolution, and accuracy, meanwhile has a light structure and a small size, and is easy to install.