Additive Metal Seal Lip for Flap Valve Vibration Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing metal seals for flap valves face challenges in achieving a consistent and effective sealing performance across the circumference due to varying mechanical stresses and resonance vibrations caused by the Bernoulli effect.
Innovation Solution
The metal sealing lip is produced using additive manufacturing, allowing for varying physical properties such as flexural strength and mass distribution across different circumferential regions, optimized for specific sealing and vibrational requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal sealing lip with uniform properties is used around the entire circumference, then the manufacturing is simple, but the sealing effectiveness varies due to different mechanical stresses and resonance vibrations at different circumferential regions
Solution Approach 1:
The metal sealing lip is produced with spatially varying physical properties using additive manufacturing. The flexural strength and mass distribution are optimized for different circumferential regions to account for varying mechanical stresses and resonance vibrations. This allows each region of the sealing lip to have properties specifically tailored to its operational demands, improving overall sealing reliability while managing the complexity through advanced manufacturing techniques
2Object-affected harmful factors
If the mass distribution in the metal sealing lip is uniform, then the manufacturing is easier, but resonance vibrations caused by the Bernoulli effect are not effectively reduced
Solution Approach 1:
The additive manufacturing process enables precise control over mass distribution within the metal sealing lip. By varying the density or structural characteristics at different locations, the design can strategically place mass to counteract resonance vibrations caused by the Bernoulli effect in high-stress regions, while maintaining manufacturing feasibility through digital modeling and controlled deposition processes
3Reliability
If the flexural strength is uniform across the metal sealing lip, then the manufacturing process is simpler, but the sealing performance varies due to different mechanical stresses at different circumferential positions
Solution Approach 1:
The metal sealing lip is designed with spatially varying flexural strength through additive manufacturing. Regions experiencing higher mechanical stresses are given greater flexural strength to maintain sealing contact under load, while lower-stress regions have reduced strength to minimize mass and inertia. This localized optimization of mechanical properties directly addresses the varying sealing performance requirements across different circumferential positions
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 approach enhances the sealing effectiveness, reduces resonance vibrations, and facilitates smoother operation of the valve disk by matching physical properties to the specific demands of each circumferential region.
Implementation Method 1
The metal sealing lip is produced in an additive method from metal materials with shape, elasticity and hardness adapted to the local requirements
Implementation Method 2
resonance vibrations caused by the Bernoulli effect
Implementation Method 3
reduces resonance vibrations, and facilitates smoother operation of the valve disk
Data Source
AI summary
A metal seal for a flap valve, is disclosed which has a valve housing with a flow channel, in the flow cross-section of which a valve disk is disposed such that it can be swiveled around a swivel axis between an open position and a shutoff position. The seal has sealing elements, which can be pressed against one another, and which are disposed on the outer circumference of the valve disk and on the inner circumference of the valve housing, and they have at least one annular metal sealing lip, which in the shutoff position bears with elastic preload on an oppositely situated, likewise annular metal mating sealing face. To prevent damage to outer components, the metal sealing lip is produced in an additive method from metal materials having shape, cross-sectional geometry and/or alloy adapted to the different circumferential regions of the metal sealing lip.