Vibration Detection Apparatus for NMR While-Drilling Instruments
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Solution Overview
Problem
Current vibration testing of while-drilling nuclear magnetic instruments is limited, as they cannot perform high-voltage emission measurements and require time-consuming external LCR detection, preventing comprehensive performance evaluation.
Innovation Solution
A vibration detection apparatus with a scale barrel suspended over a vibration table, allowing the instrument to maintain static and perform high-voltage emission measurements, enabling comprehensive vibration measurement and improved anti-vibration performance assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the while-drilling nuclear magnetic instrument is placed on the vibration table for vibration testing, then the instrument can undergo vibration testing, but the instrument cannot perform high-voltage emission measurement or echo signal measurement during vibration
Solution Approach 1:
The system is divided into two independent parts: the vibration table that generates vibration and the scale barrel that remains stationary. This segmentation allows the instrument to be subjected to vibration while the measurement system stays stable and functional, resolving the contradiction between vibration testing and measurement capability.
Solution Approach 2:
The scale barrel filled with detection liquid acts as an intermediary target. The instrument measures echo signals from this stationary target during vibration, enabling performance evaluation without requiring the measurement system itself to be vibration-resistant.
2Measurement precision
If external LCR detection apparatus is used to determine probe quality after vibration, then probe performance can be assessed, but the test process becomes time-consuming and complicated
Solution Approach 1:
The echo signal measurement can be performed continuously during the vibration test without interruption. The instrument completes both vibration exposure and performance measurement in one continuous process, eliminating the need for separate post-vibration LCR detection and significantly reducing total test time.
Solution Approach 2:
The vibration testing function and the performance measurement function are merged into a single integrated test process. The instrument undergoes vibration while simultaneously performing echo signal measurements, combining what were previously separate sequential operations into one concurrent process.
3Adaptability or versatility
If the scale barrel is mounted stationary over the vibration table, then high-voltage emission measurement can be performed during vibration, but the device structure becomes more complex
Solution Approach 1:
Instead of making the entire measurement system vibration-resistant, a simple stationary copy (scale barrel with detection liquid) is placed over the vibration table. This copying approach enables measurements during vibration without requiring complex vibration isolation or stabilization systems for the measurement apparatus.
Data Source
AI summary
A vibration detection apparatus applied to a nuclear magnetic resonance while drilling instrument, including a vibration table. The vibration table is configured to horizontally clamp the nuclear magnetic resonance while drilling instrument and further includes a graduated barrel that contains a detection liquid; the graduated barrel is configured to be suspended at the upper side of the vibration table and be spaced apart from the nuclear magnetic resonance while drilling instrument; when the vibration table performs vibration, the graduated barrel keeps stationary, and the nuclear magnetic resonance while drilling instrument preforms high-pressure emission and measurement by means of the graduated barrel. Therefore, the nuclear magnetic resonance while drilling instrument can obtain the echo signal of the graduated barrel during vibration, thereby more accurately detecting the performance thereof and shortening a detection time length.