Sensor Device With Recessed Cap For Pressure Accuracy
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Solution Overview
Problem
Current sensor devices face limitations in operating under harsh environments of high temperature and pressure, such as those encountered in deep gas drilling, where they fail to accurately measure external pressure due to non-linear pressure fluctuations and material constraints.
Innovation Solution
A sensor device design featuring a cap with recesses on its inner side wall, which reduces the non-linearity of pressure transmission and includes a damping fluid and materials with high yield strength and low thermal conductivity to protect the sensor from extreme conditions, allowing for accurate pressure sensing across a wide range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sensors are used in deep drilling environments, then they can operate at high pressure or high temperature, but they cannot withstand both extreme temperature and pressure simultaneously
Solution Approach 1:
The sensor device is segmented into distinct functional components: a sensor receiving portion for pressure detection, a cap with recesses for pressure transmission, and a damping fluid for environmental isolation. This segmentation allows each component to be optimized for its specific function, enabling the sensor to operate reliably in combined high-temperature and high-pressure environments where conventional single-function sensors fail.
Solution Approach 2:
A damping fluid is introduced as an intermediary substance between the external environment and the sensor. This fluid medium transmits pressure while isolating the sensor from direct exposure to extreme temperature and pressure conditions, allowing accurate pressure measurement in environments that would otherwise damage conventional sensors.
2Adaptability or versatility
If conventional sensors operate in wide pressure ranges, then they can cover more environmental conditions, but the pressure reading becomes non-linear and inaccurate
Solution Approach 1:
The cap is designed with specific recesses that create localized pressure transmission characteristics. These recesses modify the pressure distribution locally, ensuring linear and accurate pressure transmission across the entire wide pressure range, thereby maintaining measurement precision while expanding adaptability.
Solution Approach 2:
The damping fluid and cap recesses work together to change the pressure transmission parameters, creating a linear relationship between external pressure and sensor reading across a wide pressure range. This parameter modification enables accurate measurements from low to high pressures without the non-linearity that plagues conventional sensors.
3Measurement precision
If sensor is directly exposed to external environment, then pressure sensing is direct, but sensor damage occurs from extreme temperature and pressure
Solution Approach 1:
The damping fluid serves as a protective intermediary that transmits pressure information to the sensor while blocking the harmful effects of extreme temperature and pressure. This allows the sensor to remain shielded from environmental damage while still receiving accurate pressure data through the fluid medium.
Solution Approach 2:
The cap with its recesses acts as a flexible protective structure that transmits pressure while protecting the sensor from direct exposure to harsh environmental conditions. This flexible barrier maintains pressure sensing capability while preventing sensor damage from extreme 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 sensor device provides improved accuracy in measuring external pressure and withstands elevated temperatures and pressures, ensuring reliable operation in harsh environments by reducing non-linearity and protecting the sensor from damage.
Implementation Method 1
A sensor device design featuring a cap with recesses on its inner side wall, which reduces the non-linearity of pressure transmission and includes a damping fluid
Implementation Method 2
includes a damping fluid and materials with high yield strength and low thermal conductivity to protect the sensor from extreme conditions
Implementation Method 3
materials with high yield strength and low thermal conductivity to protect the sensor from extreme conditions
Data Source
AI summary
In various embodiments, a sensor device is provided. The sensor includes a sensor receiving portion, a sensor arranged in the sensor receiving portion and a cap covering the sensor and the sensor receiving portion. The cap includes a plurality of recesses in the inner side wall of the cap for reducing the pressure measured by the sensor.