Two-Part Pressure Fitting for Leak Prevention Under Vibration
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Solution Overview
Problem
Conventional pressure measuring instruments experience leaks due to vibrations and temperature fluctuations when mounted on components like compressors or plastic injection-molding machines, leading to increased wear and operational costs in pneumatic applications.
Innovation Solution
A two-part pressure fitting design with an outer thread section on the housing and a detachable coupling part, featuring a sealing element and a centered neck for secure fluid connection, ensures maximum tightness and adaptability to temperature changes, allowing for easy orientation and replacement without compromising the seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional pressure fitting with plastic thread is screwed into an aluminum component, then the measuring instrument can be mounted on the component, but leaks occur due to vibrations and temperature fluctuations
Solution Approach 1:
The pressure fitting is divided into two separate parts: a housing-side section that remains fixed on the measuring instrument, and a coupling part that is detachably connected to the housing-side section. The coupling part includes a sealing element that can be compressed against the sealing surface of the application component. This segmentation allows the coupling part to independently compensate for vibrations and thermal expansion, maintaining sealing reliability while the housing-side section remains stable.
Solution Approach 2:
The sealing element is designed to be compressible, allowing its deformation parameter to change in response to vibrations and temperature fluctuations. The coupling part can move axially relative to the housing-side section, changing the compression force on the sealing element to maintain contact with the sealing surface under varying conditions, thereby preventing leaks.
2Ease of operation
If the pressure fitting is made as a single integrated piece, then the structure is simple, but the measuring instrument cannot be easily replaced or reoriented
Solution Approach 1:
The pressure fitting is segmented into a housing-side section and a coupling part that can be detachably mounted on the housing-side section in an axial orientation. This allows the coupling part to be removed and replaced independently, enabling easy replacement of the measuring instrument and reorientation of the pressure fitting without replacing the entire assembly.
Solution Approach 2:
The coupling part is designed with dynamic mounting capabilities, allowing it to be detachably connected and disconnected from the housing-side section. This dynamic connection enables the coupling part to be repositioned or replaced as needed, providing operational flexibility while maintaining a relatively simple overall structure.
Data Source
AI summary
A measuring instrument includes at least a measuring element and a sealing fitting having a two-part design that provides structural improvements with regard to permanent tightness and in service conditions under vibration and temperature.