Nozzle Deformation Measurement Using Sliding Sensor Apparatus
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Solution Overview
Problem
Current methods lack the capability to accurately and precisely measure plastic deformation, such as creep, in nozzles used in commercial equipment like compressors and turbines, which occurs due to fluid flow, necessitating a reliable measurement apparatus and method.
Innovation Solution
An apparatus comprising a stand and sensors that measure axial and radial dimensions of nozzles by aligning them to a predetermined position, allowing for precise detection of deformation through sliding gauges and sensors that capture changes along the nozzle surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual inspections are performed to detect excessive amounts of creep, then the inspection process is simple and quick, but the measurement accuracy and precision are insufficient
Solution Approach 1:
The patent replaces visual inspection (mechanical/optical observation) with electronic sensors (LVDTs, strain gauges, or optical sensors) that electronically measure displacement and deformation. This substitution provides precise quantitative data while maintaining relatively simple apparatus through standardized sensor components
Solution Approach 2:
The patent introduces measurement sensors as intermediaries between the nozzle and the observer/analyst. These sensors (LVDTs, strain gauges, optical sensors) act as mediators that convert physical deformation into measurable electrical or optical signals, enabling accurate indirect measurement without direct contact or visual estimation
2Reliability
If multiple sensors are used to measure different dimensions of the nozzle, then the measurement comprehensiveness is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple measurement functions into a single integrated apparatus. Different sensor types (LVDTs for displacement, strain gauges for stress, optical sensors for surface profile) are merged into one measurement system that simultaneously captures multiple dimensions of nozzle deformation, improving reliability while managing complexity through integration
Solution Approach 2:
The measurement apparatus is designed with multi-functionality to handle various measurement needs. The same basic platform and data acquisition system can accommodate different sensor types and measurement configurations depending on the specific inspection requirements, making the apparatus universally applicable to different nozzle geometries and deformation modes
Data Source
AI summary
An apparatus for measuring a nozzle includes a stand and a first sensor in sliding engagement with the stand. The first sensor is positioned to measure a first dimension of the nozzle. A method for measuring a nozzle includes placing the nozzle in a stand, sliding a first gauge along a first surface of the nozzle, and measuring a first dimension of the nozzle.