Servo Flowmeter Pressure Detection Paths for Precision and Compactness
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Solution Overview
Problem
Conventional servo type volumetric flowmeters face challenges in precise pressure difference detection due to the distant location of pressure difference detection from the metering chamber, leading to reduced accuracy and increased size.
Innovation Solution
The design integrates pressure difference detection paths closely with the main body casing near the pump portion, forming parallel and orthogonal paths to enhance detection precision and reduce the flowmeter's size by positioning the pressure difference extraction close to the pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pressure difference detection is performed at a position away from the metering chamber using a connecting tube, then the flowmeter can detect pressure difference, but the detection precision deteriorates and the device size increases
Solution Approach 1:
The pressure difference detection paths are merged directly into the main body casing, eliminating the need for separate connecting tubes. The detection paths are formed as integral parts of the casing structure, positioning the pressure extraction points close to the pump portion while maintaining structural compactness.
Solution Approach 2:
The pressure difference detection paths extend in orthogonal directions from the main flow path, utilizing three-dimensional space efficiently. This allows the detection paths to be positioned close to the pump portion without increasing the overall device footprint, achieving compact integration.
2Reliability
If the pressure difference detection is performed at a position away from the metering chamber, then the flowmeter structure is simplified, but the detection responsiveness deteriorates
Solution Approach 1:
The pressure difference detection system is segmented into multiple independent paths: a first pressure difference detection path and a second pressure difference detection path. Each path is configured separately within the main body casing, allowing optimized positioning close to the pump portion for improved responsiveness while maintaining structural organization.
Solution Approach 2:
The detection paths utilize orthogonal extensions from the main flow path, enabling close positioning to the pump portion without creating complex routing. This three-dimensional arrangement simplifies the overall structure by directly integrating detection points near the source of pressure changes.
Data Source
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AI summary
One pressure difference detection connecting path (71) and another pressure difference detection connecting path (72) are formed so as to be arranged at a predetermined interval in a longitudinal direction. Further, the one pressure difference detection connecting path (71) is formed so as to be connected in front of a continuation center position (70) of a second inflow path (67) and a first inflowpath (43). Further, the other pressure difference detection connecting path (72) is formed so as to be connected behind a continuation center position (69) of a second outflow path (66) and a first outflow path (44).