Monolithic Pressure Port Body Isolating Transducers from Corrosive Fluids
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pressure sensing assemblies face challenges in effectively isolating pressure transducers and electronics from corrosive or harsh environments, leading to potential damage and compromised readings due to uncontrolled fluid communication.
Innovation Solution
A pressure port assembly comprising a monolithic pressure port body with a protrusion and seals, which provides controlled fluid communication to the pressure transducer while isolating other components, using ceramic or impermeable materials to prevent fluid leakage and corrosion, and integrating electrical contacts for signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure transducers and electronics are exposed to harsh environments for direct pressure sensing, then pressure measurement function is achieved, but reliability deteriorates due to corrosion and fluid damage
Solution Approach 1:
The assembly is divided into distinct functional zones: a first surface for pressure sensing, a second surface for electronics, and a protrusion creating a sealed chamber. The pressure transducer is isolated in a protected environment on the first surface while electronics reside separately on the second surface, preventing corrosive fluids from damaging either component while maintaining pressure measurement capability
Solution Approach 2:
A diaphragm serves as an intermediary element between the pressure transducer and the harsh external environment. The diaphragm transmits pressure information to the transducer while blocking direct contact with corrosive fluids, enabling the transducer to sense pressure without being exposed to harmful environmental factors
2Reliability
If fluid communication is controlled to protect components, then reliability improves, but device complexity increases due to additional seals and isolation structures
Solution Approach 1:
The protrusion integrates multiple functions into a single structural element: it creates the sealed chamber, provides mounting for the pressure transducer, and forms part of the fluid communication path. The seal is positioned at the interface between the protrusion and the base, combining structural support and sealing functions in one location, thereby reducing overall assembly complexity while maintaining effective fluid isolation
Solution Approach 2:
The base structure serves multiple purposes: it houses the pressure transducer, provides mounting for electronics, creates the sealed chamber through the protrusion interface, and establishes fluid communication pathways. This multi-functional design reduces the number of separate components needed, simplifying the overall device structure while achieving reliable fluid sealing
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A pressure port assembly and related components and methods are disclosed. In some instances, the pressure port assembly may comprise a pressure port body, including pressure port bodies composed of a continuous material. Pressure port bodies within the scope of this disclosure may be coupled to pressure sensing elements, including pressure transducers. Apertures or other flow paths may be provided across a pressure port body. Methods of integrally forming a pressure port body comprising a continuous material are also disclosed.