Hose Membrane Pump Leak Detection via Segmented Pressure Monitoring
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Solution Overview
Problem
Hose-diaphragm process pumps face limitations when handling chemicals and highly aggressive media, particularly those that crystallize, as solids tend to settle and cause premature membrane destruction, and existing monitoring systems cannot distinguish between incorrect clamping and membrane rupture.
Innovation Solution
The implementation of additional seals and fluid channels to monitor both medium-side and hydraulic-side seals, with pressure detectors positioned outside the clamping area, allowing for the detection of leaks and ensuring correct membrane clamping, thereby enhancing operational reliability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single pressure sensor monitors the space between two hose membranes, then membrane rupture can be detected, but incorrect clamping cannot be distinguished from rupture
Solution Approach 1:
The single pressure monitoring space is segmented into two separate monitoring zones: one between the medium-side seal and upper additional seal (monitored by first pressure sensor), and another between the hydraulic-side seal and lower additional seal (monitored by second pressure sensor). This segmentation enables precise identification of whether leaks occur on the medium side or hydraulic side, resolving the inability to distinguish leak locations with a single sensor.
2Reliability
If hose membrane clamping is monitored after repair work, then operational safety is improved, but existing systems cannot detect clamping issues
Solution Approach 1:
Additional seals are installed at the clamping region to create sealed monitoring spaces before operation begins. Pressure sensors are positioned to monitor these spaces in advance, enabling detection of clamping issues before they lead to failures. This preliminary setup ensures that any leakage due to incorrect clamping can be detected early, improving operational safety after repair work.
3Object-affected harmful factors
If the pump is hermetically sealed for toxic media, then safety is improved, but diaphragm rupture causes medium contamination and damage
Solution Approach 1:
Pressure sensors provide continuous feedback on the sealing integrity at the clamping region. When pressure deviations indicate leaks or clamping issues, the system can alert operators to correct the problem before hermetic seal integrity is compromised. This feedback mechanism maintains the safety benefits of hermetic sealing while preventing catastrophic failures from undetected clamping issues.
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 enables precise detection of leaks and correct membrane clamping, ensuring maximum operational safety and reliability, especially when handling highly toxic liquids, by distinguishing between medium-side and hydraulic-side leaks, and preventing damage from incorrect clamping or rupture.
Implementation Method 1
a first fluid channel is provided from the area between the medium-side seal and the upper further seal to a first pressure detector and a second fluid channel from the area between the hydraulic-side seal and the lower further seal to a second pressure detector
Data Source
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AI summary
The pump has fluid channels (6, 7) and pressure detectors (P2, P3) provided for monitoring of correct clamping of tubular diaphragms (2a, 2b). A medium side sealing (3) and a hydraulic side sealing (4) are provided in a region of a clamping part (1) of the tubular diaphragms. The fluid channel (6) is provided from a region between the medium side sealing and an upper sealing (5a) to the pressure detector (P2). The fluid channel (7) is provided from a region between a hydraulic side sealing (4) and a lower sealing (5b) to the pressure detector (P3).