Diaphragm Rupture Signalling Device for Pump Safety
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Solution Overview
Problem
Diaphragm pumps face challenges with diaphragm rupture detection, particularly at higher pressures, leading to potential liquid leakage and deviations in pump output, especially critical for toxic or hazardous liquids.
Innovation Solution
A diaphragm pump with a diaphragm rupture signalling device featuring a sensor area that extends over a full circular path concentric with the diaphragm, allowing for reliable rupture detection without precise alignment requirements and protecting the signal indicating element from mechanical damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a small circular sensor area is used in the diaphragm, then the device complexity is reduced, but the manufacturing precision and alignment reliability deteriorate
Solution Approach 1:
The sensor area is transformed from a small circular field into a ring-shaped structure that extends over the full circumference of the diaphragm. This dimensional change from a point-like sensor to a circumferential ring sensor eliminates alignment issues by providing continuous monitoring around the entire periphery, making the system independent of precise angular positioning.
2Ease of operation
If the signal indicating element is arranged on the outside of the delivery unit, then the ease of operation is improved, but the reliability deteriorates due to mechanical damage risk
Solution Approach 1:
The signal indicating element is nested within the delivery unit housing rather than being exposed on the outside. The indicator is arranged to be visible through a window or opening in the housing, protecting the mechanical elements from damage while maintaining visibility for operation monitoring.
3Measurement precision
If the diaphragm layer in the sensor area is made thinner or more elastic, then the measurement precision is improved, but the strength deteriorates
Solution Approach 1:
The diaphragm is designed with non-uniform properties: the sensor area region has different characteristics (thinner or more elastic) compared to the rest of the diaphragm structure. This local differentiation allows the sensor area to be more responsive to pressure changes for detection purposes while the overall diaphragm maintains sufficient strength through its other regions.
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 solution provides a more reliable and functionally secure diaphragm rupture signalling system, reducing the risk of false negatives and mechanical damage, ensuring safer operation and maintenance of diaphragm pumps.
Implementation Method 1
when the pressure between this diaphragm layer and the diaphragm layer adjacent thereto increases
Implementation Method 2
the material of this diaphragm layer has a higher elasticity here
Data Source
AI summary
In order to provide a diaphragm rupture signalling device for a diaphragm pump, which ensures a more functionally reliable rupture signalling compared to the prior art, a diaphragm to be arranged between the drive unit and the delivery unit is disclosed, with at least a first and a second essentially circular diaphragm layer, wherein the diaphragm has a clamping area and an operating area and a sensor area arranged in the section of the clamping area in which at least one of the diaphragm layers is designed such that, when the pressure between this diaphragm layer and the adjacent diaphragm layer increases, it moves further away from the adjacent diaphragm layer in the section of the sensor area than in the other sections of the diaphragm, with an increase in the distance between the diaphragm layers, thereby triggering a diaphragm rupture signalling signal in the diaphragm pump.