Modular Differential Pressure Tube With Slide-In Insert
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Solution Overview
Problem
The existing differential pressure gauges are often designed for specific applications, leading to expensive one-off productions or small series due to their diverse shapes and materials, making them inefficient for adapting to various mediums and flow rates.
Innovation Solution
A modular tube design comprising a standardized tubular carrier and a slide-in insert element, where the insert element forms partial areas of the inner profile, allowing for flexible adaptation to different flow conditions and materials, and featuring a groove and bores to create an annular chamber for averaging pressure conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If differential pressure gauges are designed with various shapes optimized for specific applications, then measurement precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The tube is divided into two functional segments: a standardized support structure and a replaceable insert element. The insert element contains the profile-forming features (nozzle, orifice, venturi) that determine measurement precision, while the support provides standardized mounting and connection. This segmentation allows the precision-critical profile to be optimized independently without complicating the overall tube design.
Solution Approach 2:
The support structure is designed as a universal component that can accommodate different insert elements for various measurement applications. The standardized support with its penetration channels and mounting features serves multiple functions across different tube configurations, reducing the need for custom-designed tubes for each application while maintaining measurement precision.
2Measurement precision
If custom-made tubes are manufactured for each specific application, then measurement precision is improved, but productivity decreases
Solution Approach 1:
By separating the tube into standardized support and application-specific insert elements, the manufacturing process can be divided into standardized mass-production of supports and specialized production of insert elements. This allows parallel manufacturing streams that improve overall productivity while maintaining application-optimized precision.
Solution Approach 2:
The insert element allows easy modification of geometric parameters (profile shape, diameter, constriction ratio) to optimize calibration for different applications. These parameter changes can be achieved through simpler manufacturing processes for the insert element alone, rather than re-manufacturing the entire tube, thus improving productivity.
3Productivity
If standardized tubes are used for all applications, then productivity increases, but adaptability decreases
Solution Approach 1:
The standardized support acts as a universal platform that can accommodate various insert elements designed for different mediums and flow conditions. This universality maintains high manufacturing efficiency for the support while providing full adaptability through the interchangeable insert elements.
Solution Approach 2:
The insert element provides localized optimization for specific applications (material compatibility, profile geometry) while the support provides standardized functionality. This local quality approach allows the tube to adapt to different mediums and conditions without sacrificing the productivity benefits of standardization.
4Ease of manufacture
If the entire tube is made from the same material and manufacturing process, then ease of manufacture is improved, but adaptability to different applications decreases
Solution Approach 1:
Dividing the tube into support and insert element allows each component to be manufactured using the most suitable material and process for its specific requirements. The support can be made from standardized materials using high-volume processes, while the insert element can use specialized materials and processes optimized for specific applications.
Solution Approach 2:
The tube becomes a composite structure combining different materials in the support and insert element. This allows selection of optimal materials for each component (e.g., corrosion-resistant materials for the insert contacting the medium, structural materials for the support) without compromising manufacturing simplicity.
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 design enables cost-effective standardization of the carrier, easy assembly, and precise calibration for specific applications, improving measurement accuracy and reducing production costs by allowing the use of optimized, easily manufactured insert elements.
Implementation Method 1
a groove circumferentially encircling the outer surface of the insertion element is arranged between the insertion element and the inner wall of the support. This circumferential groove is connected, on the one hand, to the interior of the insertion element through which the medium flows, via a plurality of bores provided in the insertion element, and on the other hand, to one of the channels
Data Source
Figure 1
AI summary
The invention relates to a tube for measuring the differential pressure of a medium flowing through the tube. The invention relates to an insertion element for an inventive tube, and to a method for assembling the insertion element and tube.