Differential Pressure Gauge Sensor Positioning Mechanism
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Solution Overview
Problem
Existing differential pressure gauges do not effectively communicate when a maximum allowable pressure drop is reached across a filter element, potentially leading to inefficient or damaged fluid systems due to continued debris accumulation.
Innovation Solution
A differential pressure gauge with a sensor positioning mechanism and stopping surfaces that allow for user-defined maximum pressure detection, using a ferrous remote indicator and sensor to communicate when the pressure difference exceeds a pre-selected value, enabling timely filter maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a differential pressure gauge uses a piston and spring mechanism to measure pressure drop, then it can indicate pressure difference, but it cannot automatically alert users when maximum pressure drop is reached
Solution Approach 1:
The patent introduces a sensor that detects the position of the piston and provides feedback when the piston reaches a predetermined position corresponding to maximum pressure drop. This feedback mechanism triggers an alert (visual, auditory, or electronic) to notify the user that the filter element requires replacement, thus resolving the contradiction between basic pressure measurement and maximum pressure alert capability.
Solution Approach 2:
The patent employs an intermediary sensor component that mediates between the mechanical piston movement and the user alert system. The sensor acts as a translator, converting mechanical displacement into a detectable signal that triggers the alert mechanism, thereby enabling automatic notification without requiring direct user observation of the pressure gauge.
2Device complexity
If a differential pressure gauge only provides visual indication through a scale, then the structure remains simple, but it requires continuous user monitoring and does not provide automatic alerts
Solution Approach 1:
The patent enables the differential pressure gauge to self-monitor and self-alert when maximum pressure drop is reached. The sensor automatically detects piston position and triggers alerts without requiring user intervention or continuous monitoring, making the system service itself by providing automatic notifications that the filter needs replacement.
Solution Approach 2:
The patent replaces the purely mechanical visual indication system with an enhanced system that incorporates electronic or optical sensors. The sensor detects piston position and triggers electronic or auditory alerts, substituting the need for continuous mechanical observation with automated detection and notification systems.
3Adaptability or versatility
If the sensor is allowed to move freely within the housing, then it can be positioned for optimal sensing, but it may be positioned incorrectly causing the remote indicator to not reach the sensing range
Solution Approach 1:
The patent incorporates stopping surfaces during the assembly process that preliminarily establish the correct sensor position before final assembly. These stopping surfaces ensure that when the sensor is installed, it is automatically positioned at the correct location where the remote indicator will reach the sensing range, eliminating the need for post-assembly adjustment and ensuring reliable detection.
Solution Approach 2:
The patent allows the sensor to be dynamically adjustable during assembly through the indented portion, but uses stopping surfaces to define the boundaries of valid positions. This dynamic positioning capability during assembly, constrained by stopping surfaces, ensures the sensor can be optimized for sensing while guaranteeing reliable operation within acceptable ranges.
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 gauge effectively alerts users to maximum pressure drops, preventing system inefficiencies and damage by allowing for timely filter replacement or maintenance, ensuring safe and efficient operation.
Implementation Method 1
the sensor is configured to sense the presence of the ferrous remote indicator
Data Source
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AI summary
A differential pressure gauge for measuring a difference in pressure present between a low pressure portion of a fluid and a high pressure portion of the fluid comprises a cylinder including an opening, a housing including an opening, and a piston extending from a first end having a visual indicator to a second end having a remote indicator. The first end of the piston is in fluid communication with the high pressure portion of the fluid and the second end of the piston is in fluid communication with the low pressure portion of the fluid. A sensor is configured to sense a presence of the remote indicator when the remote indicator is within a sensing range of the sensor. The sensor is coupled to a sensor positioning mechanism for adjusting a position of the sensor with respect to the axial direction of the housing.