Spiral Wound Membrane Module End Cap With Integrated Differential Pressure Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Monitoring pressure loss in spiral wound membrane modules within sealed pressure vessels is challenging, leading to difficulties in detecting biofouling and scaling issues, which affect separation performance in fluid separation processes.
Innovation Solution
Incorporating an end cap assembly with a differential pressure sensor connected to a fluid passageway that extends radially inward from the outer periphery to the inner ring, allowing for the measurement of pressure differences across the module ends without the need for retractable probes, thus enabling early detection of biofouling and scaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sealed pressure vessels are used to house spiral wound membrane modules, then the modules are protected and contained, but pressure monitoring becomes difficult and requires complex techniques or retractable probes
Solution Approach 1:
The patent extracts the pressure sensing function from complex external monitoring systems and relocates it directly into the pressure vessel through the end cap assembly. The differential pressure sensor is integrated into the end cap, eliminating the need for retractable probes or complex external monitoring techniques while maintaining reliable pressure monitoring capability
Solution Approach 2:
The end cap assembly serves as an intermediary structure that bridges the sealed pressure vessel environment and the pressure sensing requirement. It provides a controlled interface through which pressure information can be accessed without compromising the seal, using apertures and fluid access pathways to transmit pressure data to the sensor
2Measurement precision
If pressure monitoring is delayed or difficult, then early detection of biofouling and scaling is missed, but implementing complex monitoring systems increases device complexity and cost
Solution Approach 1:
The differential pressure sensor is pre-positioned within the end cap assembly during module manufacturing, enabling immediate and continuous pressure monitoring from the start of operation. This preliminary integration ensures that pressure loss indicators are detected as soon as they occur, allowing early detection of biofouling and scaling before they significantly impact performance
Solution Approach 2:
The end cap assembly with integrated differential pressure sensor enables the membrane module to self-monitor its own performance status. The sensor continuously measures pressure differences across the module, providing self-diagnostics for fouling conditions without requiring external complex monitoring equipment or manual intervention
3Ease of operation
If retractable probes or complex monitoring techniques are used, then pressure can be monitored, but the system becomes more complex and requires more sensors
Solution Approach 1:
The patent merges the end cap structural component with the pressure sensing function into a single integrated assembly. The end cap simultaneously provides mechanical support, sealing, and houses the differential pressure sensor, eliminating the need for separate retractable probes or multiple sensors while maintaining ease of pressure monitoring operation
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 allows for the early detection of biofouling and scaling issues, facilitating timely interventions and maintaining separation performance by providing a non-invasive means to monitor pressure changes within the sealed pressure vessels.
Implementation Method 1
a differential pressure sensor connected to the fluid passageway of the connecting conduit
Data Source
AI summary
A spiral wound membrane module including a specialized end cap assembly including a connecting conduit defining a passageway extending radially inward from its outer periphery, and a differential pressure sensor connected to the passageway of the connecting conduit.