High Temperature Resonator Densitometer for Steam Quality
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Solution Overview
Problem
Existing densitometers are limited in operating above 350°F, restricting their deployment in deep wellbores due to the limitations of traditional transducer technology, and they fail to effectively measure two-phase mixture quality, such as steam quality, in high-temperature environments.
Innovation Solution
A densitometer system comprising a resonator tine mechanically coupled to a densitometer body, with a drive transducer and a pickup transducer, that oscillates the resonator tine to measure fluid density and quality, using resonator electronics and a microprocessor to determine the two-phase mixture quality based on thermodynamic properties and temperature or pressure measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional transducer technology is used in densitometers, then the device structure is simple and cost-effective, but the operating temperature is limited to below 350°F
Solution Approach 1:
The patent changes the material parameters of the transducer components to high-temperature resistant materials, enabling operation above 350°F. Specifically, the resonator and transducer elements are selected or designed with material properties that maintain structural integrity and functional performance at elevated temperatures, thus resolving the temperature limitation of traditional densitometers.
2Length of moving object
If densitometers are deployed in deep wellbores, then the measurement depth increases, but the temperature exceeds the operational limit of existing densitometers
Solution Approach 1:
The patent modifies the thermal parameter tolerance of the densitometer by using high-temperature resistant materials and design, allowing the device to operate in the high-temperature environment of deep wellbores. This enables extended deployment depth by removing the temperature constraint that previously limited operational depth.
3Measurement precision
If existing densitometer technology is used, then the device complexity is low, but the measurement precision for two-phase mixture quality is insufficient
Solution Approach 1:
The patent employs mechanical vibration of the resonator at its resonant frequency to enhance measurement precision. By oscillating the resonator and detecting changes in its vibrational characteristics when exposed to two-phase mixtures, the system achieves accurate quality measurement. The vibration-based measurement mechanism provides superior precision compared to static measurement methods.
4Measurement precision
If traditional densitometers are used in high-temperature environments, then the device simplicity is maintained, but the measurement accuracy deteriorates
Solution Approach 1:
The patent compensates for temperature effects by using materials and design that maintain stable physical parameters at high temperatures. The resonator and transducer components are selected to minimize thermal drift and maintain measurement accuracy across a wide temperature range, ensuring precise fluid density measurement even 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
Enables accurate measurement of fluid density and two-phase mixture quality in high-temperature environments, extending the operational depth of densitometers and improving the monitoring and control of industrial processes, including power generation and geothermal applications.
Implementation Method 1
oscillating the resonator tine with the drive transducer... measuring the oscillation of the resonator tine with the pickup transducer
Implementation Method 2
drive transducer... pickup transducer
Data Source
AI summary
A method for measuring two-phase mixture quality in a fluid may include providing a densitometer with a densitometer body, a resonator tine, a drive transducer, and a pickup transducer. The method may also include exposing the resonator tine to the fluid and oscillating the resonator tine with the drive transducer. In addition, the method may include measuring the oscillation of the resonator tine with the pickup transducer, and determining a density of the fluid based on the measured oscillation of the resonator tine. The method may also include determining a two-phase mixture quality based on the determined density.