Manometer with Dual Pointers on Shared Scale
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Solution Overview
Problem
Existing pressure gauge arrangements for fittings with multiple measuring points are cumbersome, require excessive material, and increase installation complexity due to the need for separate scales and gauges at each measurement location.
Innovation Solution
A pressure gauge arrangement using two interconnected gears with coaxial axes, allowing both measuring points to be displayed on a single scale, reducing material usage and installation effort, and enabling easier identification of permissible pressure differences through overlapping pointer areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate pressure gauges with separate scales are used for each measuring point, then each measuring point can be displayed independently, but the device complexity and material usage increase
Solution Approach 1:
The patent combines multiple pressure gauge functions into a single integrated display unit. Multiple pointers (first pointer, second pointer) are used to indicate different measuring points simultaneously on one shared scale, eliminating the need for separate scales and reducing overall device complexity while maintaining independent measurement capability for each pressure point
Solution Approach 2:
The single scale serves multiple functions by displaying pressure values for different measuring points through different pointers. This universal display mechanism allows one scale to replace what would traditionally require multiple separate scales, achieving multi-functionality without increasing complexity
2Measurement precision
If multiple separate pressure gauges are installed for multiple measuring points, then complete pressure monitoring is achieved, but the installation effort and time increase
Solution Approach 1:
Multiple pressure gauge functions are merged into a single installed unit. The integrated design with multiple pointers allows installation of one device instead of multiple separate gauges, significantly reducing installation time and effort while maintaining complete pressure monitoring coverage across all measuring points
Solution Approach 2:
The single pressure gauge is segmented into multiple independent measurement functions, each with its own pointer. This segmentation allows the device to monitor multiple pressure points simultaneously while remaining a single installable unit, reducing installation complexity and time
3Measurement precision
If a second scale is added for the second measuring point, then both pressures can be displayed, but the weight and compactness are reduced
Solution Approach 1:
The display function for both pressure measurements is merged into a single scale. Multiple pointers indicate different pressure values on the same scale, eliminating the need for a second scale and thereby reducing the overall weight and improving compactness of the assembly
Solution Approach 2:
Instead of adding a second scale in the same dimensional space (which would increase weight and reduce compactness), the patent uses a different dimension by employing multiple pointers on a single scale. This approach achieves dual pressure display capability without the penalty of additional scale mass
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
This solution simplifies pressure measurement across multiple points, reduces material and installation complexity, and allows for immediate visual assessment of pressure differences, enhancing maintenance efficiency and compactness.
Implementation Method 1
The pressure gauge uses a Bourdon tube with a pressure-dependent change in length
Implementation Method 2
The change in length is transferred to a gear wheel with a pull rod. When the pressure of the fluid in the fitting changes, the gear rotates
Data Source
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AI summary
A manometer arrangement comprising a manometer in which a force caused by pressure or pressure change in a liquid system is transferred to a pointer and the pointer indicates the pressure or pressure change on a scale, is characterized in that a further manometer for detecting a pressure or pressure change at another location in the liquid system is provided, the force of which is transferred to a further pointer, wherein the further pointer indicates the pressure or pressure change on the same scale.