Diaphragm Valve Sensor Layout for Accurate Bidirectional Flow Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing valve designs face challenges in accurately measuring fluid dynamics near the valve seat due to sensor placement that interferes with fluid flow, leading to measurement inaccuracies and assembly complexities, particularly when the flow direction is not predetermined.
Innovation Solution
A diaphragm valve design with sensor devices positioned within a dry space near the valve seat, allowing for symmetrical arrangement and measurement in both flow directions, with one sensor closer to the valve seat for improved pressure measurement accuracy, and an evaluation unit for real-time data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are positioned close to the valve seat to improve measurement accuracy, then measurement precision improves, but the sensors interfere with fluid flow and create assembly complexities
Solution Approach 1:
The valve body is divided into separate walls with integrated sensor mounting recesses, allowing sensors to be positioned close to the valve seat without interfering with the overall fluid flow path. The recesses create dedicated sensor mounting zones that segment the valve body structure while maintaining fluid dynamics.
Solution Approach 2:
Sensor recesses are created in specific local regions of the valve body walls, providing localized sensor mounting positions that are close to the valve seat for accurate measurement. This local modification does not affect the overall fluid flow characteristics of the valve body.
2Adaptability or versatility
If sensors are arranged to measure both flow directions, then adaptability improves, but symmetrical arrangement increases device complexity
Solution Approach 1:
While the valve body maintains overall symmetry for bidirectional operation, the sensor recesses are positioned asymmetrically on different walls. This asymmetric placement within a symmetric structure allows both flow directions to be measured without requiring complex symmetrical sensor arrangements, simplifying the overall device design.
Solution Approach 2:
The sensor recesses and sensor devices are designed to function in both flow directions, making the measurement system universal. The same sensor configuration can detect fluid dynamics regardless of flow direction, eliminating the need for separate measurement systems for each direction.
3Volume of moving object
If sensor devices are integrated into the valve body, then device compactness improves, but sensor protection from environmental influences worsens
Solution Approach 1:
The sensor devices are nested within recesses in the valve body walls, creating a compact integrated structure. The recesses provide partial protection while maintaining the compact design. Additionally, cable ducts are integrated into the valve body structure to route sensor cables through protected pathways.
Solution Approach 2:
The recesses act as intermediary structures between the sensor devices and the external environment. They provide a transition zone that protects sensors from direct environmental exposure while maintaining the compact integrated design. Cable ducts serve as intermediary pathways for electrical connections.
Data Source
AI summary
A valve body for a diaphragm valve having a valve seat is disclosed, wherein at least two walls of the valve body converge on one another towards the valve seat, wherein the at least two walls at least partly delimit a common dry space, and wherein at least one of the walls comprises a recess which is closed fluid-tightly by a sensor device for providing at least one sensor signal.